* Mount point not auto unmounted after system date/time change
@ 2015-09-16 8:29 Ning Yu
2015-09-16 8:45 ` Ning Yu
0 siblings, 1 reply; 32+ messages in thread
From: Ning Yu @ 2015-09-16 8:29 UTC (permalink / raw)
To: autofs
Hi,
A auto mounted directory won't be automatically unmounted after a
system date/time change, for example we can reproduce the issue with
below steps in 100% failrate:
$ cat /etc/auto.master
/mnt /etc/auto.misc
$ cat /etc/auto.misc
removable -fstype=auto :/dev/sdb1
### now plugin a usb pendrive
$ cd /mnt/removable
$ sudo date -s "+1 year"
$ sleep 1
$ sudo date -s "-1 year"
$ cd
Now /mnt/removable will not be automatically unmounted, the root cause
is that autofs uses gettimeofday() to identify the timestamp and
calculate the delta for timeouts, however as mentioned in the manpage:
```
NOTES
The time returned by gettimeofday() is affected by discontinuous jumps
in the system time (e.g., if the system administrator manually changes
the system time). If you need a monotonically increasing clock, see
clock_gettime(2).
```
So in the above reproducer autofs will wait for a one-year-long
timeout to unmount /mnt/removable.
BR
Ning
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 8:29 Mount point not auto unmounted after system date/time change Ning Yu
@ 2015-09-16 8:45 ` Ning Yu
2015-09-16 9:16 ` Ian Kent
0 siblings, 1 reply; 32+ messages in thread
From: Ning Yu @ 2015-09-16 8:45 UTC (permalink / raw)
To: autofs
Hi,
I have composed a patch for this issue, it works in my side, what it
does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
Would anyone please help to review it? Thanks in advance.
From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
From: Yu Ning <ning.yu@ubuntu.com>
Date: Wed, 16 Sep 2015 15:56:21 +0800
Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
This patch is to fix the issue that a mount point may not be
automatically unmounted after a system date/time change.
Reproducer with 100% failrate:
$ cat /etc/auto.master
/mnt /etc/auto.misc
$ cat /etc/auto.misc
removable -fstype=auto :/dev/sdb1
### now plugin a usb pendrive
$ cd /mnt/removable
$ sudo date -s "+1 year"
$ sleep 1
$ sudo date -s "-1 year"
$ cd
/mnt/removable will not be automatically unmounted.
The root cause is that autofs uses gettimeofday() to identify the
timestamp and calculate the timeouts, however as mentioned in the
manpage:
NOTES
The time returned by gettimeofday() is affected by
discontinuous jumps
in the system time (e.g., if the system administrator
manually changes
the system time). If you need a monotonically increasing
clock, see
clock_gettime(2).
So we can fix the issue by replacing gettimeofday() with
clock_gettime(CLOCK_MONOTONIC).
---
daemon/automount.c | 4 ++--
daemon/direct.c | 16 ++++++++--------
daemon/indirect.c | 16 ++++++++--------
daemon/lookup.c | 6 +++---
daemon/state.c | 2 +-
include/automount.h | 9 +++++++++
include/rpc_subs.h | 1 +
lib/alarm.c | 23 +++++++++++++++++------
lib/cache.c | 2 +-
lib/master.c | 4 ++--
lib/rpc_subs.c | 17 ++++++++++++-----
modules/dclist.c | 2 +-
modules/lookup_file.c | 8 ++++----
modules/lookup_hesiod.c | 6 +++---
modules/lookup_hosts.c | 4 ++--
modules/lookup_ldap.c | 10 +++++-----
modules/lookup_nisplus.c | 10 +++++-----
modules/lookup_program.c | 10 +++++-----
modules/lookup_sss.c | 6 +++---
modules/lookup_userhome.c | 2 +-
modules/lookup_yp.c | 8 ++++----
modules/mount_autofs.c | 2 +-
modules/parse_amd.c | 2 +-
modules/replicated.c | 34 ++++++++++++++++------------------
24 files changed, 115 insertions(+), 89 deletions(-)
diff --git a/daemon/automount.c b/daemon/automount.c
index 229cb1a..a49ceee 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
break;
case SIGHUP:
- do_hup_signal(master_list, time(NULL));
+ do_hup_signal(master_list, monotonic_time(NULL));
break;
default:
@@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
unsigned ghost, logging, daemon_check;
unsigned dumpmaps, foreground, have_global_options;
time_t timeout;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct rlimit rlim;
const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
static const struct option long_options[] = {
diff --git a/daemon/direct.c b/daemon/direct.c
index 5569299..470a719 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
struct mapent_cache *nc, *mc;
struct mapent *me, *ne, *nested;
struct mnt_list *mnts;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
if (strcmp(ap->path, "/-")) {
error(ap->logopt, "expected direct map, exiting");
@@ -1041,7 +1041,7 @@ int handle_packet_expire_direct(struct
autofs_point *ap, autofs_packet_expire_di
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -1159,9 +1159,9 @@ int handle_packet_expire_direct(struct
autofs_point *ap, autofs_packet_expire_di
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -1296,7 +1296,7 @@ int handle_packet_missing_direct(struct
autofs_point *ap, autofs_packet_missing_
char buf[MAX_ERR_BUF];
int status = 0;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int ioctlfd, len, state;
unsigned int kver_major = get_kver_major();
unsigned int kver_minor = get_kver_minor();
@@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct
autofs_point *ap, autofs_packet_missing_
}
/* Check if we recorded a mount fail for this key */
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt,
ioctlfd, pkt->wait_queue_token, -ENOENT);
ops->close(ap->logopt, ioctlfd);
@@ -1478,9 +1478,9 @@ int handle_packet_missing_direct(struct
autofs_point *ap, autofs_packet_missing_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index a04a624..b2015f9 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -197,7 +197,7 @@ out_err:
int mount_autofs_indirect(struct autofs_point *ap, const char *root)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int status;
int map;
@@ -636,7 +636,7 @@ int handle_packet_expire_indirect(struct
autofs_point *ap, autofs_packet_expire_
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -691,9 +691,9 @@ int handle_packet_expire_indirect(struct
autofs_point *ap, autofs_packet_expire_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -795,7 +795,7 @@ int handle_packet_missing_indirect(struct
autofs_point *ap, autofs_packet_missin
char buf[MAX_ERR_BUF];
struct pending_args *mt;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
struct mapent *me;
int status, state;
@@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct
autofs_point *ap, autofs_packet_missin
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt, ap->ioctlfd,
pkt->wait_queue_token, -ENOENT);
cache_unlock(me->mc);
@@ -884,9 +884,9 @@ int handle_packet_missing_indirect(struct
autofs_point *ap, autofs_packet_missin
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/daemon/lookup.c b/daemon/lookup.c
index 62071df..9a8fa7e 100644
--- a/daemon/lookup.c
+++ b/daemon/lookup.c
@@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct
autofs_point *ap, struct map_
struct map_source *instance;
char src_file[] = "file";
char src_prog[] = "program";
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct stat st;
char *type, *format;
@@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct
autofs_point *ap, struct map_sourc
{
struct map_source *instance;
const char *format;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
return lookup_amd_instance(ap, map, name, name_len);
@@ -1079,7 +1079,7 @@ static void update_negative_cache(struct
autofs_point *ap, struct map_source *so
else
map = entry->maps;
if (map) {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int rv = CHE_FAIL;
cache_writelock(map->mc);
diff --git a/daemon/state.c b/daemon/state.c
index 3174a9c..08828b1 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
pthread_t thid;
struct readmap_args *ra;
int status;
- int now = time(NULL);
+ int now = monotonic_time(NULL);
debug(ap->logopt, "state %d path %s", ap->state, ap->path);
diff --git a/include/automount.h b/include/automount.h
index 447aba1..7bbf859 100644
--- a/include/automount.h
+++ b/include/automount.h
@@ -565,6 +565,15 @@ do { \
fatal(_m_unlock); \
} while(0)
+static inline time_t monotonic_time(time_t *t)
+{
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (t)
+ *t = (time_t) ts.tv_sec;
+ return (time_t) ts.tv_sec;
+}
+
/* Expire alarm handling routines */
int alarm_start_handler(void);
int alarm_add(struct autofs_point *ap, time_t seconds);
diff --git a/include/rpc_subs.h b/include/rpc_subs.h
index b6d59f9..e329224 100644
--- a/include/rpc_subs.h
+++ b/include/rpc_subs.h
@@ -71,6 +71,7 @@ int rpc_portmap_getport(struct conn_info *, struct
pmap *, unsigned short *);
int rpc_ping_proto(struct conn_info *);
int rpc_ping(const char *, long, long, unsigned int);
double elapsed(struct timeval, struct timeval);
+double monotonic_elapsed(struct timespec, struct timespec);
int rpc_time(const char *, unsigned int, unsigned int, long, long,
unsigned int, double *);
const char *get_addr_string(struct sockaddr *, char *, socklen_t);
diff --git a/lib/alarm.c b/lib/alarm.c
index 0f04ef8..7563c9b 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -23,7 +23,7 @@ struct alarm {
};
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t cond;
static LIST_HEAD(alarms);
#define alarm_lock() \
@@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
struct list_head *head;
struct list_head *p;
struct alarm *new;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t next_alarm = 0;
unsigned int empty = 1;
int status;
@@ -175,17 +175,17 @@ static void *alarm_handler(void *arg)
first = list_entry(head->next, struct alarm, list);
- now = time(NULL);
+ now = monotonic_time(NULL);
if (first->time > now) {
- struct timeval usecs;
+ struct timespec nsecs;
/*
* Wait for alarm to trigger or a new alarm
* to be added.
*/
- gettimeofday(&usecs, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &nsecs);
expire.tv_sec = first->time;
- expire.tv_nsec = usecs.tv_usec * 1000;
+ expire.tv_nsec = nsecs.tv_nsec;
status = pthread_cond_timedwait(&cond, &mutex, &expire);
if (status && status != ETIMEDOUT)
@@ -212,6 +212,7 @@ int alarm_start_handler(void)
pthread_t thid;
pthread_attr_t attrs;
pthread_attr_t *pattrs = &attrs;
+ pthread_condattr_t condattrs;
int status;
status = pthread_attr_init(pattrs);
@@ -224,8 +225,18 @@ int alarm_start_handler(void)
#endif
}
+ status = pthread_condattr_init(&condattrs);
+ if (status)
+ fatal(status);
+
+ pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
+ pthread_cond_init(&cond, &condattrs);
+
status = pthread_create(&thid, pattrs, alarm_handler, NULL);
+ pthread_condattr_destroy(&condattrs);
+ pthread_condattr_destroy(&cond);
+
if (pattrs)
pthread_attr_destroy(pattrs);
diff --git a/lib/cache.c b/lib/cache.c
index 631d275..44e323d 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
struct map_source *ms, const char *key,
time_t timeout)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
struct mapent *me;
int rv = CHE_OK;
diff --git a/lib/master.c b/lib/master.c
index 6c38b1c..cca8371 100644
--- a/lib/master.c
+++ b/lib/master.c
@@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char
*type, const char *name)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
this = list_entry(p, struct master_mapent, list);
p = p->next;
@@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
unsigned int count = 0;
this = list_entry(p, struct master_mapent, list);
diff --git a/lib/rpc_subs.c b/lib/rpc_subs.c
index 846c40e..e8c0ca5 100644
--- a/lib/rpc_subs.c
+++ b/lib/rpc_subs.c
@@ -1086,25 +1086,32 @@ double elapsed(struct timeval start, struct timeval end)
return t2-t1;
}
+double monotonic_elapsed(struct timespec start, struct timespec end)
+{
+ double t1, t2;
+ t1 = (double)start.tv_sec + (double)start.tv_nsec/(1000*1000*1000);
+ t2 = (double)end.tv_sec + (double)end.tv_nsec/(1000*1000*1000);
+ return t2-t1;
+}
+
int rpc_time(const char *host,
unsigned int ping_vers, unsigned int ping_proto,
long seconds, long micros, unsigned int option, double *result)
{
int status;
double taken;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
int proto = (ping_proto & RPC_PING_UDP) ? IPPROTO_UDP : IPPROTO_TCP;
unsigned long vers = ping_vers;
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = __rpc_ping(host, vers, proto, seconds, micros, option);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == RPC_PING_FAIL || status < 0)
return status;
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
if (result != NULL)
*result = taken;
diff --git a/modules/dclist.c b/modules/dclist.c
index af21ce0..4daa199 100644
--- a/modules/dclist.c
+++ b/modules/dclist.c
@@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt,
const char *uri)
if (!list)
goto out_error;
- dclist->expire = time(NULL) + min_ttl;
+ dclist->expire = monotonic_time(NULL) + min_ttl;
dclist->uri = list;
return dclist;
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index 7c982c6..4e52fce 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
{
char buf[MAX_ERR_BUF];
struct mapent_cache *mc;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *lkp_key;
char *prefix;
size_t map_key_len;
@@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc = source->mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
struct mapent_cache *mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
index 526f294..9da4f8e 100644
--- a/modules/lookup_hesiod.c
+++ b/modules/lookup_hesiod.c
@@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, key, best_record, time(NULL));
+ ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
hesiod_free_list(ctxt->hesiod_context, hes_result);
@@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
+ ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
cache_unlock(mc);
if (hes_result)
@@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
index 0d48356..8c4bbd9 100644
--- a/modules/lookup_hosts.c
+++ b/modules/lookup_hosts.c
@@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
struct mapent *me;
char *mapent = NULL;
int mapent_len;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int ret;
source = ap->entry->current;
@@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
index 5da613e..d45e7d1 100644
--- a/modules/lookup_ldap.c
+++ b/modules/lookup_ldap.c
@@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct
lookup_context *ctxt)
uris_mutex_lock(ctxt);
if (ctxt->dclist) {
- if (!ldap || ctxt->dclist->expire < time(NULL)) {
+ if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
free_dclist(ctxt->dclist);
ctxt->dclist = NULL;
}
@@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap,
struct map_source *source,
struct mapent_cache *mc;
int rv, i, l, ql, count;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *query;
LDAPMessage *result = NULL, *e;
char *class, *info, *entry;
@@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
struct berval **bvKey;
struct berval **bvValues;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int rv, l, ql, count;
int ret = CHE_MISSING;
@@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
int status;
@@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index d5eba47..17d3dde 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
mapent = ENTRY_VAL(this, 1);
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
nis_freeresult(result);
@@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me, *exists;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret = 0;
@@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_program.c b/modules/lookup_program.c
index a3a7e98..eff774b 100644
--- a/modules/lookup_program.c
+++ b/modules/lookup_program.c
@@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", start, time(NULL));
+ ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
start++;
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, start, time(NULL));
+ ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, match, start, time(NULL));
+ ret = cache_update(mc, source, match, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(match);
@@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
@@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
* proceed with the program map lookup.
*/
if (strchr(name, '/') ||
- me->age + ap->negative_timeout > time(NULL)) {
+ me->age + ap->negative_timeout > monotonic_time(NULL)) {
char *ent = NULL;
if (me->mapent) {
diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
index 528ab41..d685ccf 100644
--- a/modules/lookup_sss.c
+++ b/modules/lookup_sss.c
@@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc;
struct mapent *we;
void *sss_ctxt = NULL;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char buf[MAX_ERR_BUF];
char *value = NULL;
char *s_key;
@@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
struct map_source *source;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
@@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
index fb3caaa..d0c3e80 100644
--- a/modules/lookup_userhome.c
+++ b/modules/lookup_userhome.c
@@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char
*name, int name_len, void *
}
cache_writelock(mc);
- ret = cache_update(mc, source, name, NULL, time(NULL));
+ ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
index fcf470a..3ffa4b6 100644
--- a/modules/lookup_yp.c
+++ b/modules/lookup_yp.c
@@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
return CHE_FAIL;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
return ret;
@@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
index 4846e7f..05ea1c1 100644
--- a/modules/mount_autofs.c
+++ b/modules/mount_autofs.c
@@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const
char *root, const char *name,
source = master_add_map_source(entry,
info->type, info->format,
- time(NULL), argc, argv);
+ monotonic_time(NULL), argc, argv);
if (!source) {
error(ap->logopt,
MODPREFIX "failed to add map source to entry");
diff --git a/modules/parse_amd.c b/modules/parse_amd.c
index 899be40..6e29c6c 100644
--- a/modules/parse_amd.c
+++ b/modules/parse_amd.c
@@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point
*ap, const char *name,
"hosts", "sun", argc, pargv);
if (!instance) {
instance = master_add_source_instance(source,
- "hosts", "sun", time(NULL), argc, pargv);
+ "hosts", "sun", monotonic_time(NULL), argc, pargv);
if (!instance) {
error(ap->logopt, MODPREFIX
"failed to create source instance for hosts map");
diff --git a/modules/replicated.c b/modules/replicated.c
index 32860d5..8da1148 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -69,14 +69,14 @@ void seed_random(void)
fd = open_fd("/dev/urandom", O_RDONLY);
if (fd < 0) {
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
return;
}
if (read(fd, &seed, sizeof(seed)) != -1)
srandom(seed);
else
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
close(fd);
@@ -231,8 +231,7 @@ static unsigned int get_nfs_info(unsigned logopt,
struct host *host,
socklen_t len = INET6_ADDRSTRLEN;
char buf[len + 1];
struct pmap parms;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
unsigned int supported = 0;
double taken = 0;
int status, count = 0;
@@ -292,9 +291,9 @@ static unsigned int get_nfs_info(unsigned logopt,
struct host *host,
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -306,7 +305,7 @@ static unsigned int get_nfs_info(unsigned logopt,
struct host *host,
debug(logopt,
"nfs v4 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v4 rpc ping time: %f", reply);
}
taken += reply;
@@ -351,9 +350,9 @@ v3_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -365,7 +364,7 @@ v3_ver:
debug(logopt,
"nfs v3 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v3 rpc ping time: %f", reply);
}
taken += reply;
@@ -407,9 +406,9 @@ v2_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT)
supported = status;
else if (status > 0) {
@@ -420,7 +419,7 @@ v2_ver:
debug(logopt,
"nfs v2 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);;
+ reply = monotonic_elapsed(start, end);;
debug(logopt, "nfs v2 rpc ping time: %f", reply);
}
taken += reply;
@@ -523,8 +522,7 @@ static int get_supported_ver_and_cost(unsigned
logopt, struct host *host,
struct conn_info pm_info, rpc_info;
int proto;
unsigned int vers;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
double taken = 0;
time_t timeout = RPC_TIMEOUT;
int status = 0;
@@ -610,16 +608,16 @@ static int get_supported_ver_and_cost(unsigned
logopt, struct host *host,
if (status == -EHOSTUNREACH)
goto done;
else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(&rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status > 0) {
if (random_selection) {
/* Random value between 0 and 1 */
taken = ((float) random())/((float) RAND_MAX+1);
debug(logopt, "random selection time %f", taken);
} else {
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
debug(logopt, "rpc ping time %f", taken);
}
}
--
1.9.1
On Wed, Sep 16, 2015 at 4:29 PM, Ning Yu <ning.yu@canonical.com> wrote:
> Hi,
>
> A auto mounted directory won't be automatically unmounted after a
> system date/time change, for example we can reproduce the issue with
> below steps in 100% failrate:
>
> $ cat /etc/auto.master
> /mnt /etc/auto.misc
>
> $ cat /etc/auto.misc
> removable -fstype=auto :/dev/sdb1
>
> ### now plugin a usb pendrive
>
> $ cd /mnt/removable
> $ sudo date -s "+1 year"
> $ sleep 1
> $ sudo date -s "-1 year"
> $ cd
>
> Now /mnt/removable will not be automatically unmounted, the root cause
> is that autofs uses gettimeofday() to identify the timestamp and
> calculate the delta for timeouts, however as mentioned in the manpage:
>
> ```
> NOTES
> The time returned by gettimeofday() is affected by discontinuous jumps
> in the system time (e.g., if the system administrator manually changes
> the system time). If you need a monotonically increasing clock, see
> clock_gettime(2).
> ```
>
> So in the above reproducer autofs will wait for a one-year-long
> timeout to unmount /mnt/removable.
>
> BR
> Ning
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 8:45 ` Ning Yu
@ 2015-09-16 9:16 ` Ian Kent
2015-09-16 10:28 ` Ning Yu
` (3 more replies)
0 siblings, 4 replies; 32+ messages in thread
From: Ian Kent @ 2015-09-16 9:16 UTC (permalink / raw)
To: Ning Yu; +Cc: autofs
On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
> Hi,
>
> I have composed a patch for this issue, it works in my side, what it
> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
>
> Would anyone please help to review it? Thanks in advance.
Are you joking!
How is this meant to apply to the current source, it won't.
If you can manage to post a sane patch you will need to break it up into
a few separate standalone patches with sane explanations of what each
one is meant to achieve.
>
> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
> From: Yu Ning <ning.yu@ubuntu.com>
> Date: Wed, 16 Sep 2015 15:56:21 +0800
> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
>
> This patch is to fix the issue that a mount point may not be
> automatically unmounted after a system date/time change.
>
> Reproducer with 100% failrate:
Since of you to hammer the result of the problem you've identified
rather than just explain the problem and what needs to be done to
resolve it in a polite and sensible manner.
>
> $ cat /etc/auto.master
> /mnt /etc/auto.misc
>
> $ cat /etc/auto.misc
> removable -fstype=auto :/dev/sdb1
>
> ### now plugin a usb pendrive
>
> $ cd /mnt/removable
> $ sudo date -s "+1 year"
> $ sleep 1
> $ sudo date -s "-1 year"
> $ cd
>
> /mnt/removable will not be automatically unmounted.
>
> The root cause is that autofs uses gettimeofday() to identify the
> timestamp and calculate the timeouts, however as mentioned in the
> manpage:
>
> NOTES
> The time returned by gettimeofday() is affected by
> discontinuous jumps
> in the system time (e.g., if the system administrator
> manually changes
> the system time). If you need a monotonically increasing
> clock, see
> clock_gettime(2).
>
> So we can fix the issue by replacing gettimeofday() with
> clock_gettime(CLOCK_MONOTONIC).
> ---
> daemon/automount.c | 4 ++--
> daemon/direct.c | 16 ++++++++--------
> daemon/indirect.c | 16 ++++++++--------
> daemon/lookup.c | 6 +++---
> daemon/state.c | 2 +-
> include/automount.h | 9 +++++++++
> include/rpc_subs.h | 1 +
> lib/alarm.c | 23 +++++++++++++++++------
> lib/cache.c | 2 +-
> lib/master.c | 4 ++--
> lib/rpc_subs.c | 17 ++++++++++++-----
> modules/dclist.c | 2 +-
> modules/lookup_file.c | 8 ++++----
> modules/lookup_hesiod.c | 6 +++---
> modules/lookup_hosts.c | 4 ++--
> modules/lookup_ldap.c | 10 +++++-----
> modules/lookup_nisplus.c | 10 +++++-----
> modules/lookup_program.c | 10 +++++-----
> modules/lookup_sss.c | 6 +++---
> modules/lookup_userhome.c | 2 +-
> modules/lookup_yp.c | 8 ++++----
> modules/mount_autofs.c | 2 +-
> modules/parse_amd.c | 2 +-
> modules/replicated.c | 34 ++++++++++++++++------------------
> 24 files changed, 115 insertions(+), 89 deletions(-)
>
> diff --git a/daemon/automount.c b/daemon/automount.c
> index 229cb1a..a49ceee 100644
> --- a/daemon/automount.c
> +++ b/daemon/automount.c
> @@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
> break;
>
> case SIGHUP:
> - do_hup_signal(master_list, time(NULL));
> + do_hup_signal(master_list, monotonic_time(NULL));
> break;
>
> default:
> @@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
> unsigned ghost, logging, daemon_check;
> unsigned dumpmaps, foreground, have_global_options;
> time_t timeout;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> struct rlimit rlim;
> const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
> static const struct option long_options[] = {
> diff --git a/daemon/direct.c b/daemon/direct.c
> index 5569299..470a719 100644
> --- a/daemon/direct.c
> +++ b/daemon/direct.c
> @@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
> struct mapent_cache *nc, *mc;
> struct mapent *me, *ne, *nested;
> struct mnt_list *mnts;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
>
> if (strcmp(ap->path, "/-")) {
> error(ap->logopt, "expected direct map, exiting");
> @@ -1041,7 +1041,7 @@ int handle_packet_expire_direct(struct
> autofs_point *ap, autofs_packet_expire_di
> char buf[MAX_ERR_BUF];
> pthread_t thid;
> struct timespec wait;
> - struct timeval now;
> + struct timespec now;
> int status, state;
>
> pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
> @@ -1159,9 +1159,9 @@ int handle_packet_expire_direct(struct
> autofs_point *ap, autofs_packet_expire_di
>
> mt->signaled = 0;
> while (!mt->signaled) {
> - gettimeofday(&now, NULL);
> + clock_gettime(CLOCK_MONOTONIC, &now);
> wait.tv_sec = now.tv_sec + 2;
> - wait.tv_nsec = now.tv_usec * 1000;
> + wait.tv_nsec = now.tv_nsec;
> status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
> if (status && status != ETIMEDOUT)
> fatal(status);
> @@ -1296,7 +1296,7 @@ int handle_packet_missing_direct(struct
> autofs_point *ap, autofs_packet_missing_
> char buf[MAX_ERR_BUF];
> int status = 0;
> struct timespec wait;
> - struct timeval now;
> + struct timespec now;
> int ioctlfd, len, state;
> unsigned int kver_major = get_kver_major();
> unsigned int kver_minor = get_kver_minor();
> @@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct
> autofs_point *ap, autofs_packet_missing_
> }
>
> /* Check if we recorded a mount fail for this key */
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> ops->send_fail(ap->logopt,
> ioctlfd, pkt->wait_queue_token, -ENOENT);
> ops->close(ap->logopt, ioctlfd);
> @@ -1478,9 +1478,9 @@ int handle_packet_missing_direct(struct
> autofs_point *ap, autofs_packet_missing_
>
> mt->signaled = 0;
> while (!mt->signaled) {
> - gettimeofday(&now, NULL);
> + clock_gettime(CLOCK_MONOTONIC, &now);
> wait.tv_sec = now.tv_sec + 2;
> - wait.tv_nsec = now.tv_usec * 1000;
> + wait.tv_nsec = now.tv_nsec;
> status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
> if (status && status != ETIMEDOUT)
> fatal(status);
> diff --git a/daemon/indirect.c b/daemon/indirect.c
> index a04a624..b2015f9 100644
> --- a/daemon/indirect.c
> +++ b/daemon/indirect.c
> @@ -197,7 +197,7 @@ out_err:
>
> int mount_autofs_indirect(struct autofs_point *ap, const char *root)
> {
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> int status;
> int map;
>
> @@ -636,7 +636,7 @@ int handle_packet_expire_indirect(struct
> autofs_point *ap, autofs_packet_expire_
> char buf[MAX_ERR_BUF];
> pthread_t thid;
> struct timespec wait;
> - struct timeval now;
> + struct timespec now;
> int status, state;
>
> pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
> @@ -691,9 +691,9 @@ int handle_packet_expire_indirect(struct
> autofs_point *ap, autofs_packet_expire_
>
> mt->signaled = 0;
> while (!mt->signaled) {
> - gettimeofday(&now, NULL);
> + clock_gettime(CLOCK_MONOTONIC, &now);
> wait.tv_sec = now.tv_sec + 2;
> - wait.tv_nsec = now.tv_usec * 1000;
> + wait.tv_nsec = now.tv_nsec;
> status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
> if (status && status != ETIMEDOUT)
> fatal(status);
> @@ -795,7 +795,7 @@ int handle_packet_missing_indirect(struct
> autofs_point *ap, autofs_packet_missin
> char buf[MAX_ERR_BUF];
> struct pending_args *mt;
> struct timespec wait;
> - struct timeval now;
> + struct timespec now;
> struct mapent *me;
> int status, state;
>
> @@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct
> autofs_point *ap, autofs_packet_missin
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> ops->send_fail(ap->logopt, ap->ioctlfd,
> pkt->wait_queue_token, -ENOENT);
> cache_unlock(me->mc);
> @@ -884,9 +884,9 @@ int handle_packet_missing_indirect(struct
> autofs_point *ap, autofs_packet_missin
>
> mt->signaled = 0;
> while (!mt->signaled) {
> - gettimeofday(&now, NULL);
> + clock_gettime(CLOCK_MONOTONIC, &now);
> wait.tv_sec = now.tv_sec + 2;
> - wait.tv_nsec = now.tv_usec * 1000;
> + wait.tv_nsec = now.tv_nsec;
> status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
> if (status && status != ETIMEDOUT)
> fatal(status);
> diff --git a/daemon/lookup.c b/daemon/lookup.c
> index 62071df..9a8fa7e 100644
> --- a/daemon/lookup.c
> +++ b/daemon/lookup.c
> @@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct
> autofs_point *ap, struct map_
> struct map_source *instance;
> char src_file[] = "file";
> char src_prog[] = "program";
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> struct stat st;
> char *type, *format;
>
> @@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct
> autofs_point *ap, struct map_sourc
> {
> struct map_source *instance;
> const char *format;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
>
> if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
> return lookup_amd_instance(ap, map, name, name_len);
> @@ -1079,7 +1079,7 @@ static void update_negative_cache(struct
> autofs_point *ap, struct map_source *so
> else
> map = entry->maps;
> if (map) {
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> int rv = CHE_FAIL;
>
> cache_writelock(map->mc);
> diff --git a/daemon/state.c b/daemon/state.c
> index 3174a9c..08828b1 100644
> --- a/daemon/state.c
> +++ b/daemon/state.c
> @@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
> pthread_t thid;
> struct readmap_args *ra;
> int status;
> - int now = time(NULL);
> + int now = monotonic_time(NULL);
>
> debug(ap->logopt, "state %d path %s", ap->state, ap->path);
>
> diff --git a/include/automount.h b/include/automount.h
> index 447aba1..7bbf859 100644
> --- a/include/automount.h
> +++ b/include/automount.h
> @@ -565,6 +565,15 @@ do { \
> fatal(_m_unlock); \
> } while(0)
>
> +static inline time_t monotonic_time(time_t *t)
> +{
> + struct timespec ts;
> + clock_gettime(CLOCK_MONOTONIC, &ts);
> + if (t)
> + *t = (time_t) ts.tv_sec;
> + return (time_t) ts.tv_sec;
> +}
> +
> /* Expire alarm handling routines */
> int alarm_start_handler(void);
> int alarm_add(struct autofs_point *ap, time_t seconds);
> diff --git a/include/rpc_subs.h b/include/rpc_subs.h
> index b6d59f9..e329224 100644
> --- a/include/rpc_subs.h
> +++ b/include/rpc_subs.h
> @@ -71,6 +71,7 @@ int rpc_portmap_getport(struct conn_info *, struct
> pmap *, unsigned short *);
> int rpc_ping_proto(struct conn_info *);
> int rpc_ping(const char *, long, long, unsigned int);
> double elapsed(struct timeval, struct timeval);
> +double monotonic_elapsed(struct timespec, struct timespec);
> int rpc_time(const char *, unsigned int, unsigned int, long, long,
> unsigned int, double *);
> const char *get_addr_string(struct sockaddr *, char *, socklen_t);
>
> diff --git a/lib/alarm.c b/lib/alarm.c
> index 0f04ef8..7563c9b 100755
> --- a/lib/alarm.c
> +++ b/lib/alarm.c
> @@ -23,7 +23,7 @@ struct alarm {
> };
>
> static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
> -static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
> +static pthread_cond_t cond;
> static LIST_HEAD(alarms);
>
> #define alarm_lock() \
> @@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
> struct list_head *head;
> struct list_head *p;
> struct alarm *new;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t next_alarm = 0;
> unsigned int empty = 1;
> int status;
> @@ -175,17 +175,17 @@ static void *alarm_handler(void *arg)
>
> first = list_entry(head->next, struct alarm, list);
>
> - now = time(NULL);
> + now = monotonic_time(NULL);
>
> if (first->time > now) {
> - struct timeval usecs;
> + struct timespec nsecs;
> /*
> * Wait for alarm to trigger or a new alarm
> * to be added.
> */
> - gettimeofday(&usecs, NULL);
> + clock_gettime(CLOCK_MONOTONIC, &nsecs);
> expire.tv_sec = first->time;
> - expire.tv_nsec = usecs.tv_usec * 1000;
> + expire.tv_nsec = nsecs.tv_nsec;
>
> status = pthread_cond_timedwait(&cond, &mutex, &expire);
> if (status && status != ETIMEDOUT)
> @@ -212,6 +212,7 @@ int alarm_start_handler(void)
> pthread_t thid;
> pthread_attr_t attrs;
> pthread_attr_t *pattrs = &attrs;
> + pthread_condattr_t condattrs;
> int status;
>
> status = pthread_attr_init(pattrs);
> @@ -224,8 +225,18 @@ int alarm_start_handler(void)
> #endif
> }
>
> + status = pthread_condattr_init(&condattrs);
> + if (status)
> + fatal(status);
> +
> + pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
> + pthread_cond_init(&cond, &condattrs);
> +
> status = pthread_create(&thid, pattrs, alarm_handler, NULL);
>
> + pthread_condattr_destroy(&condattrs);
> + pthread_condattr_destroy(&cond);
> +
> if (pattrs)
> pthread_attr_destroy(pattrs);
>
> diff --git a/lib/cache.c b/lib/cache.c
> index 631d275..44e323d 100644
> --- a/lib/cache.c
> +++ b/lib/cache.c
> @@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
> struct map_source *ms, const char *key,
> time_t timeout)
> {
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> struct mapent *me;
> int rv = CHE_OK;
>
> diff --git a/lib/master.c b/lib/master.c
> index 6c38b1c..cca8371 100644
> --- a/lib/master.c
> +++ b/lib/master.c
> @@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char
> *type, const char *name)
> struct map_source *source;
> struct master_mapent *this;
> struct autofs_point *ap;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
>
> this = list_entry(p, struct master_mapent, list);
> p = p->next;
> @@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
> struct map_source *source;
> struct master_mapent *this;
> struct autofs_point *ap;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> unsigned int count = 0;
>
> this = list_entry(p, struct master_mapent, list);
> diff --git a/lib/rpc_subs.c b/lib/rpc_subs.c
> index 846c40e..e8c0ca5 100644
> --- a/lib/rpc_subs.c
> +++ b/lib/rpc_subs.c
> @@ -1086,25 +1086,32 @@ double elapsed(struct timeval start, struct timeval end)
> return t2-t1;
> }
>
> +double monotonic_elapsed(struct timespec start, struct timespec end)
> +{
> + double t1, t2;
> + t1 = (double)start.tv_sec + (double)start.tv_nsec/(1000*1000*1000);
> + t2 = (double)end.tv_sec + (double)end.tv_nsec/(1000*1000*1000);
> + return t2-t1;
> +}
> +
> int rpc_time(const char *host,
> unsigned int ping_vers, unsigned int ping_proto,
> long seconds, long micros, unsigned int option, double *result)
> {
> int status;
> double taken;
> - struct timeval start, end;
> - struct timezone tz;
> + struct timespec start, end;
> int proto = (ping_proto & RPC_PING_UDP) ? IPPROTO_UDP : IPPROTO_TCP;
> unsigned long vers = ping_vers;
>
> - gettimeofday(&start, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &start);
> status = __rpc_ping(host, vers, proto, seconds, micros, option);
> - gettimeofday(&end, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &end);
>
> if (status == RPC_PING_FAIL || status < 0)
> return status;
>
> - taken = elapsed(start, end);
> + taken = monotonic_elapsed(start, end);
>
> if (result != NULL)
> *result = taken;
> diff --git a/modules/dclist.c b/modules/dclist.c
> index af21ce0..4daa199 100644
> --- a/modules/dclist.c
> +++ b/modules/dclist.c
> @@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt,
> const char *uri)
> if (!list)
> goto out_error;
>
> - dclist->expire = time(NULL) + min_ttl;
> + dclist->expire = monotonic_time(NULL) + min_ttl;
> dclist->uri = list;
>
> return dclist;
> diff --git a/modules/lookup_file.c b/modules/lookup_file.c
> index 7c982c6..4e52fce 100644
> --- a/modules/lookup_file.c
> +++ b/modules/lookup_file.c
> @@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
> {
> char buf[MAX_ERR_BUF];
> struct mapent_cache *mc;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> char *lkp_key;
> char *prefix;
> size_t map_key_len;
> @@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
> struct mapent_cache *mc = source->mc;
> char mkey[KEY_MAX_LEN + 1];
> char mapent[MAPENT_MAX_LEN + 1];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> FILE *f;
> unsigned int k_len, m_len;
> int entry, ret;
> @@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
> struct mapent_cache *mc;
> char mkey[KEY_MAX_LEN + 1];
> char mapent[MAPENT_MAX_LEN + 1];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> FILE *f;
> unsigned int k_len, m_len;
> int entry, ret;
> @@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
> index 526f294..9da4f8e 100644
> --- a/modules/lookup_hesiod.c
> +++ b/modules/lookup_hesiod.c
> @@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
> }
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, key, best_record, time(NULL));
> + ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> hesiod_free_list(ctxt->hesiod_context, hes_result);
> @@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
> }
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
> + ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
> cache_unlock(mc);
>
> if (hes_result)
> @@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
> index 0d48356..8c4bbd9 100644
> --- a/modules/lookup_hosts.c
> +++ b/modules/lookup_hosts.c
> @@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> struct mapent *me;
> char *mapent = NULL;
> int mapent_len;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> int ret;
>
> source = ap->entry->current;
> @@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
> index 5da613e..d45e7d1 100644
> --- a/modules/lookup_ldap.c
> +++ b/modules/lookup_ldap.c
> @@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct
> lookup_context *ctxt)
>
> uris_mutex_lock(ctxt);
> if (ctxt->dclist) {
> - if (!ldap || ctxt->dclist->expire < time(NULL)) {
> + if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
> free_dclist(ctxt->dclist);
> ctxt->dclist = NULL;
> }
> @@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap,
> struct map_source *source,
> struct mapent_cache *mc;
> int rv, i, l, ql, count;
> char buf[MAX_ERR_BUF];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> char *query;
> LDAPMessage *result = NULL, *e;
> char *class, *info, *entry;
> @@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
> struct berval **bvKey;
> struct berval **bvValues;
> char buf[MAX_ERR_BUF];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int rv, l, ql, count;
> int ret = CHE_MISSING;
>
> @@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
> unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
> struct mapent_cache *mc;
> struct mapent *me;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t t_last_read;
> int ret, cur_state;
> int status;
> @@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
> index d5eba47..17d3dde 100644
> --- a/modules/lookup_nisplus.c
> +++ b/modules/lookup_nisplus.c
> @@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
> nis_result *result;
> nis_object *this;
> char *mapent;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret, cur_state;
> char buf[MAX_ERR_BUF];
>
> @@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
> nis_result *result;
> nis_object *this;
> char *mapent;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret, cur_state;
> char buf[MAX_ERR_BUF];
>
> @@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> mapent = ENTRY_VAL(this, 1);
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
> + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
> cache_unlock(mc);
>
> nis_freeresult(result);
> @@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
> unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
> struct mapent_cache *mc;
> struct mapent *me, *exists;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t t_last_read;
> int ret = 0;
>
> @@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_program.c b/modules/lookup_program.c
> index a3a7e98..eff774b 100644
> --- a/modules/lookup_program.c
> +++ b/modules/lookup_program.c
> @@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> while (isblank(*start))
> start++;
> cache_writelock(mc);
> - ret = cache_update(mc, source, "/defaults", start, time(NULL));
> + ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> free(ment);
> @@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
> start++;
> }
> cache_writelock(mc);
> - ret = cache_update(mc, source, lkp_key, start, time(NULL));
> + ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> free(ment);
> @@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
> while (isblank(*start))
> start++;
> cache_writelock(mc);
> - ret = cache_update(mc, source, match, start, time(NULL));
> + ret = cache_update(mc, source, match, start, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> free(match);
> @@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> @@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> * proceed with the program map lookup.
> */
> if (strchr(name, '/') ||
> - me->age + ap->negative_timeout > time(NULL)) {
> + me->age + ap->negative_timeout > monotonic_time(NULL)) {
> char *ent = NULL;
>
> if (me->mapent) {
> diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
> index 528ab41..d685ccf 100644
> --- a/modules/lookup_sss.c
> +++ b/modules/lookup_sss.c
> @@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
> struct mapent_cache *mc;
> struct mapent *we;
> void *sss_ctxt = NULL;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> char buf[MAX_ERR_BUF];
> char *value = NULL;
> char *s_key;
> @@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
> struct map_source *source;
> struct mapent_cache *mc;
> struct mapent *me;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t t_last_read;
> int ret, cur_state;
>
> @@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
> index fb3caaa..d0c3e80 100644
> --- a/modules/lookup_userhome.c
> +++ b/modules/lookup_userhome.c
> @@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char
> *name, int name_len, void *
> }
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, name, NULL, time(NULL));
> + ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
> cache_unlock(mc);
>
> if (ret == CHE_FAIL) {
> diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
> index fcf470a..3ffa4b6 100644
> --- a/modules/lookup_yp.c
> +++ b/modules/lookup_yp.c
> @@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
> char *mapname;
> char *mapent;
> int mapent_len;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret;
>
> mc = source->mc;
> @@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
> char *mapname;
> char *mapent;
> int mapent_len;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret;
>
> mc = source->mc;
> @@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> return CHE_FAIL;
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
> + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
> cache_unlock(mc);
>
> return ret;
> @@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const
> char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
> index 4846e7f..05ea1c1 100644
> --- a/modules/mount_autofs.c
> +++ b/modules/mount_autofs.c
> @@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const
> char *root, const char *name,
>
> source = master_add_map_source(entry,
> info->type, info->format,
> - time(NULL), argc, argv);
> + monotonic_time(NULL), argc, argv);
> if (!source) {
> error(ap->logopt,
> MODPREFIX "failed to add map source to entry");
> diff --git a/modules/parse_amd.c b/modules/parse_amd.c
> index 899be40..6e29c6c 100644
> --- a/modules/parse_amd.c
> +++ b/modules/parse_amd.c
> @@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point
> *ap, const char *name,
> "hosts", "sun", argc, pargv);
> if (!instance) {
> instance = master_add_source_instance(source,
> - "hosts", "sun", time(NULL), argc, pargv);
> + "hosts", "sun", monotonic_time(NULL), argc, pargv);
> if (!instance) {
> error(ap->logopt, MODPREFIX
> "failed to create source instance for hosts map");
> diff --git a/modules/replicated.c b/modules/replicated.c
> index 32860d5..8da1148 100644
> --- a/modules/replicated.c
> +++ b/modules/replicated.c
> @@ -69,14 +69,14 @@ void seed_random(void)
>
> fd = open_fd("/dev/urandom", O_RDONLY);
> if (fd < 0) {
> - srandom(time(NULL));
> + srandom(monotonic_time(NULL));
> return;
> }
>
> if (read(fd, &seed, sizeof(seed)) != -1)
> srandom(seed);
> else
> - srandom(time(NULL));
> + srandom(monotonic_time(NULL));
>
> close(fd);
>
> @@ -231,8 +231,7 @@ static unsigned int get_nfs_info(unsigned logopt,
> struct host *host,
> socklen_t len = INET6_ADDRSTRLEN;
> char buf[len + 1];
> struct pmap parms;
> - struct timeval start, end;
> - struct timezone tz;
> + struct timespec start, end;
> unsigned int supported = 0;
> double taken = 0;
> int status, count = 0;
> @@ -292,9 +291,9 @@ static unsigned int get_nfs_info(unsigned logopt,
> struct host *host,
> supported = status;
> goto done_ver;
> } else if (!status) {
> - gettimeofday(&start, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &start);
> status = rpc_ping_proto(rpc_info);
> - gettimeofday(&end, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &end);
> if (status == -ETIMEDOUT) {
> supported = status;
> goto done_ver;
> @@ -306,7 +305,7 @@ static unsigned int get_nfs_info(unsigned logopt,
> struct host *host,
> debug(logopt,
> "nfs v4 random selection time: %f", reply);
> } else {
> - reply = elapsed(start, end);
> + reply = monotonic_elapsed(start, end);
> debug(logopt, "nfs v4 rpc ping time: %f", reply);
> }
> taken += reply;
> @@ -351,9 +350,9 @@ v3_ver:
> supported = status;
> goto done_ver;
> } else if (!status) {
> - gettimeofday(&start, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &start);
> status = rpc_ping_proto(rpc_info);
> - gettimeofday(&end, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &end);
> if (status == -ETIMEDOUT) {
> supported = status;
> goto done_ver;
> @@ -365,7 +364,7 @@ v3_ver:
> debug(logopt,
> "nfs v3 random selection time: %f", reply);
> } else {
> - reply = elapsed(start, end);
> + reply = monotonic_elapsed(start, end);
> debug(logopt, "nfs v3 rpc ping time: %f", reply);
> }
> taken += reply;
> @@ -407,9 +406,9 @@ v2_ver:
> supported = status;
> goto done_ver;
> } else if (!status) {
> - gettimeofday(&start, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &start);
> status = rpc_ping_proto(rpc_info);
> - gettimeofday(&end, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &end);
> if (status == -ETIMEDOUT)
> supported = status;
> else if (status > 0) {
> @@ -420,7 +419,7 @@ v2_ver:
> debug(logopt,
> "nfs v2 random selection time: %f", reply);
> } else {
> - reply = elapsed(start, end);;
> + reply = monotonic_elapsed(start, end);;
> debug(logopt, "nfs v2 rpc ping time: %f", reply);
> }
> taken += reply;
> @@ -523,8 +522,7 @@ static int get_supported_ver_and_cost(unsigned
> logopt, struct host *host,
> struct conn_info pm_info, rpc_info;
> int proto;
> unsigned int vers;
> - struct timeval start, end;
> - struct timezone tz;
> + struct timespec start, end;
> double taken = 0;
> time_t timeout = RPC_TIMEOUT;
> int status = 0;
> @@ -610,16 +608,16 @@ static int get_supported_ver_and_cost(unsigned
> logopt, struct host *host,
> if (status == -EHOSTUNREACH)
> goto done;
> else if (!status) {
> - gettimeofday(&start, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &start);
> status = rpc_ping_proto(&rpc_info);
> - gettimeofday(&end, &tz);
> + clock_gettime(CLOCK_MONOTONIC, &end);
> if (status > 0) {
> if (random_selection) {
> /* Random value between 0 and 1 */
> taken = ((float) random())/((float) RAND_MAX+1);
> debug(logopt, "random selection time %f", taken);
> } else {
> - taken = elapsed(start, end);
> + taken = monotonic_elapsed(start, end);
> debug(logopt, "rpc ping time %f", taken);
> }
> }
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 9:16 ` Ian Kent
@ 2015-09-16 10:28 ` Ning Yu
2015-09-16 10:43 ` Ian Kent
2015-09-16 10:30 ` Ning Yu
` (2 subsequent siblings)
3 siblings, 1 reply; 32+ messages in thread
From: Ning Yu @ 2015-09-16 10:28 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
> On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
>> Hi,
>>
>> I have composed a patch for this issue, it works in my side, what it
>> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
>>
>> Would anyone please help to review it? Thanks in advance.
>
> Are you joking!
> How is this meant to apply to the current source, it won't.
>
> If you can manage to post a sane patch you will need to break it up into
> a few separate standalone patches with sane explanations of what each
> one is meant to achieve.
I'm sorry, not to offend, the previous patch was huge because all the call to
time() or gettimeofday() functions are replaced with clock_gettime().
Please allow me to re-send the patch, this time I have splitted it into
several smaller patches, hope it won't be as stupid as previous one.
>
>>
>> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
>> From: Yu Ning <ning.yu@ubuntu.com>
>> Date: Wed, 16 Sep 2015 15:56:21 +0800
>> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
>>
>> This patch is to fix the issue that a mount point may not be
>> automatically unmounted after a system date/time change.
>>
>> Reproducer with 100% failrate:
>
> Since of you to hammer the result of the problem you've identified
> rather than just explain the problem and what needs to be done to
> resolve it in a polite and sensible manner.
>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 9:16 ` Ian Kent
2015-09-16 10:28 ` Ning Yu
@ 2015-09-16 10:30 ` Ning Yu
2015-09-16 10:30 ` Ning Yu
2015-09-16 10:30 ` Ning Yu
3 siblings, 0 replies; 32+ messages in thread
From: Ning Yu @ 2015-09-16 10:30 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
From 6ec16729db72ab07d49e8a17349a3a5bfacd1a2d Mon Sep 17 00:00:00 2001
From: Yu Ning <ning.yu@ubuntu.com>
Date: Wed, 16 Sep 2015 18:05:46 +0800
Subject: [PATCH 1/3] Use clock_gettime() instead of gettimeofday().
The time returned by gettimeofday() is affected by discontinuous jumps
in the system time, so it causes an issue that autofs may not auto
unmount a mount point if system time is manually changed by the system
administrator.
To fix the issue we can use clock_gettime(CLOCK_MONOTONIC) instead of
gettimeofday().
A new function monotonic_elapsed() is introduced in rpc_subs.h as a
timespec version of elapsed().
---
daemon/direct.c | 12 ++++++------
daemon/indirect.c | 12 ++++++------
include/rpc_subs.h | 1 +
lib/alarm.c | 6 +++---
lib/rpc_subs.c | 17 ++++++++++++-----
modules/replicated.c | 30 ++++++++++++++----------------
6 files changed, 42 insertions(+), 36 deletions(-)
diff --git a/daemon/direct.c b/daemon/direct.c
index 5569299..cdd7f49 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -1041,7 +1041,7 @@ int handle_packet_expire_direct(struct
autofs_point *ap, autofs_packet_expire_di
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -1159,9 +1159,9 @@ int handle_packet_expire_direct(struct
autofs_point *ap, autofs_packet_expire_di
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -1296,7 +1296,7 @@ int handle_packet_missing_direct(struct
autofs_point *ap, autofs_packet_missing_
char buf[MAX_ERR_BUF];
int status = 0;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int ioctlfd, len, state;
unsigned int kver_major = get_kver_major();
unsigned int kver_minor = get_kver_minor();
@@ -1478,9 +1478,9 @@ int handle_packet_missing_direct(struct
autofs_point *ap, autofs_packet_missing_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index a04a624..0ea9b19 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -636,7 +636,7 @@ int handle_packet_expire_indirect(struct
autofs_point *ap, autofs_packet_expire_
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -691,9 +691,9 @@ int handle_packet_expire_indirect(struct
autofs_point *ap, autofs_packet_expire_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -795,7 +795,7 @@ int handle_packet_missing_indirect(struct
autofs_point *ap, autofs_packet_missin
char buf[MAX_ERR_BUF];
struct pending_args *mt;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
struct mapent *me;
int status, state;
@@ -884,9 +884,9 @@ int handle_packet_missing_indirect(struct
autofs_point *ap, autofs_packet_missin
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/include/rpc_subs.h b/include/rpc_subs.h
index b6d59f9..e329224 100644
--- a/include/rpc_subs.h
+++ b/include/rpc_subs.h
@@ -71,6 +71,7 @@ int rpc_portmap_getport(struct conn_info *, struct
pmap *, unsigned short *);
int rpc_ping_proto(struct conn_info *);
int rpc_ping(const char *, long, long, unsigned int);
double elapsed(struct timeval, struct timeval);
+double monotonic_elapsed(struct timespec, struct timespec);
int rpc_time(const char *, unsigned int, unsigned int, long, long,
unsigned int, double *);
const char *get_addr_string(struct sockaddr *, char *, socklen_t);
diff --git a/lib/alarm.c b/lib/alarm.c
index 0f04ef8..65a80ae 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -178,14 +178,14 @@ static void *alarm_handler(void *arg)
now = time(NULL);
if (first->time > now) {
- struct timeval usecs;
+ struct timespec nsecs;
/*
* Wait for alarm to trigger or a new alarm
* to be added.
*/
- gettimeofday(&usecs, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &nsecs);
expire.tv_sec = first->time;
- expire.tv_nsec = usecs.tv_usec * 1000;
+ expire.tv_nsec = nsecs.tv_nsec;
status = pthread_cond_timedwait(&cond, &mutex, &expire);
if (status && status != ETIMEDOUT)
diff --git a/lib/rpc_subs.c b/lib/rpc_subs.c
index 846c40e..e8c0ca5 100644
--- a/lib/rpc_subs.c
+++ b/lib/rpc_subs.c
@@ -1086,25 +1086,32 @@ double elapsed(struct timeval start, struct timeval end)
return t2-t1;
}
+double monotonic_elapsed(struct timespec start, struct timespec end)
+{
+ double t1, t2;
+ t1 = (double)start.tv_sec + (double)start.tv_nsec/(1000*1000*1000);
+ t2 = (double)end.tv_sec + (double)end.tv_nsec/(1000*1000*1000);
+ return t2-t1;
+}
+
int rpc_time(const char *host,
unsigned int ping_vers, unsigned int ping_proto,
long seconds, long micros, unsigned int option, double *result)
{
int status;
double taken;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
int proto = (ping_proto & RPC_PING_UDP) ? IPPROTO_UDP : IPPROTO_TCP;
unsigned long vers = ping_vers;
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = __rpc_ping(host, vers, proto, seconds, micros, option);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == RPC_PING_FAIL || status < 0)
return status;
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
if (result != NULL)
*result = taken;
diff --git a/modules/replicated.c b/modules/replicated.c
index 32860d5..0f0cc51 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -231,8 +231,7 @@ static unsigned int get_nfs_info(unsigned logopt,
struct host *host,
socklen_t len = INET6_ADDRSTRLEN;
char buf[len + 1];
struct pmap parms;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
unsigned int supported = 0;
double taken = 0;
int status, count = 0;
@@ -292,9 +291,9 @@ static unsigned int get_nfs_info(unsigned logopt,
struct host *host,
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -306,7 +305,7 @@ static unsigned int get_nfs_info(unsigned logopt,
struct host *host,
debug(logopt,
"nfs v4 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v4 rpc ping time: %f", reply);
}
taken += reply;
@@ -351,9 +350,9 @@ v3_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -365,7 +364,7 @@ v3_ver:
debug(logopt,
"nfs v3 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v3 rpc ping time: %f", reply);
}
taken += reply;
@@ -407,9 +406,9 @@ v2_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT)
supported = status;
else if (status > 0) {
@@ -420,7 +419,7 @@ v2_ver:
debug(logopt,
"nfs v2 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);;
+ reply = monotonic_elapsed(start, end);;
debug(logopt, "nfs v2 rpc ping time: %f", reply);
}
taken += reply;
@@ -523,8 +522,7 @@ static int get_supported_ver_and_cost(unsigned
logopt, struct host *host,
struct conn_info pm_info, rpc_info;
int proto;
unsigned int vers;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
double taken = 0;
time_t timeout = RPC_TIMEOUT;
int status = 0;
@@ -610,16 +608,16 @@ static int get_supported_ver_and_cost(unsigned
logopt, struct host *host,
if (status == -EHOSTUNREACH)
goto done;
else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(&rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status > 0) {
if (random_selection) {
/* Random value between 0 and 1 */
taken = ((float) random())/((float) RAND_MAX+1);
debug(logopt, "random selection time %f", taken);
} else {
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
debug(logopt, "rpc ping time %f", taken);
}
}
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 9:16 ` Ian Kent
2015-09-16 10:28 ` Ning Yu
2015-09-16 10:30 ` Ning Yu
@ 2015-09-16 10:30 ` Ning Yu
2015-09-16 10:30 ` Ning Yu
3 siblings, 0 replies; 32+ messages in thread
From: Ning Yu @ 2015-09-16 10:30 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
From 72434f142926540ec63e8ee772936172731dec72 Mon Sep 17 00:00:00 2001
From: Yu Ning <ning.yu@ubuntu.com>
Date: Wed, 16 Sep 2015 18:12:50 +0800
Subject: [PATCH 2/3] Use monotonic clock for pthread cond timed wait.
The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
we need to switch to use the monotic clock.
---
lib/alarm.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/lib/alarm.c b/lib/alarm.c
index 65a80ae..5b98b2d 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -23,7 +23,7 @@ struct alarm {
};
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t cond;
static LIST_HEAD(alarms);
#define alarm_lock() \
@@ -212,6 +212,7 @@ int alarm_start_handler(void)
pthread_t thid;
pthread_attr_t attrs;
pthread_attr_t *pattrs = &attrs;
+ pthread_condattr_t condattrs;
int status;
status = pthread_attr_init(pattrs);
@@ -224,8 +225,18 @@ int alarm_start_handler(void)
#endif
}
+ status = pthread_condattr_init(&condattrs);
+ if (status)
+ fatal(status);
+
+ pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
+ pthread_cond_init(&cond, &condattrs);
+
status = pthread_create(&thid, pattrs, alarm_handler, NULL);
+ pthread_condattr_destroy(&condattrs);
+ pthread_condattr_destroy(&cond);
+
if (pattrs)
pthread_attr_destroy(pattrs);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 9:16 ` Ian Kent
` (2 preceding siblings ...)
2015-09-16 10:30 ` Ning Yu
@ 2015-09-16 10:30 ` Ning Yu
3 siblings, 0 replies; 32+ messages in thread
From: Ning Yu @ 2015-09-16 10:30 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
From aef6d0ff19eb65634a0cd2928b97c22b25451471 Mon Sep 17 00:00:00 2001
From: Yu Ning <ning.yu@ubuntu.com>
Date: Wed, 16 Sep 2015 18:22:51 +0800
Subject: [PATCH 3/3] Use monotonic clock instead of time().
A new function monotonic_time() is introduced in automount.h as a
monotonic version of time(), all the calls to time() have been switched
to use this new function.
---
daemon/automount.c | 4 ++--
daemon/direct.c | 4 ++--
daemon/indirect.c | 4 ++--
daemon/lookup.c | 6 +++---
daemon/state.c | 2 +-
include/automount.h | 9 +++++++++
lib/alarm.c | 4 ++--
lib/cache.c | 2 +-
lib/master.c | 4 ++--
modules/dclist.c | 2 +-
modules/lookup_file.c | 8 ++++----
modules/lookup_hesiod.c | 6 +++---
modules/lookup_hosts.c | 4 ++--
modules/lookup_ldap.c | 10 +++++-----
modules/lookup_nisplus.c | 10 +++++-----
modules/lookup_program.c | 10 +++++-----
modules/lookup_sss.c | 6 +++---
modules/lookup_userhome.c | 2 +-
modules/lookup_yp.c | 8 ++++----
modules/mount_autofs.c | 2 +-
modules/parse_amd.c | 2 +-
modules/replicated.c | 4 ++--
22 files changed, 61 insertions(+), 52 deletions(-)
diff --git a/daemon/automount.c b/daemon/automount.c
index 229cb1a..a49ceee 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
break;
case SIGHUP:
- do_hup_signal(master_list, time(NULL));
+ do_hup_signal(master_list, monotonic_time(NULL));
break;
default:
@@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
unsigned ghost, logging, daemon_check;
unsigned dumpmaps, foreground, have_global_options;
time_t timeout;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct rlimit rlim;
const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
static const struct option long_options[] = {
diff --git a/daemon/direct.c b/daemon/direct.c
index cdd7f49..470a719 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
struct mapent_cache *nc, *mc;
struct mapent *me, *ne, *nested;
struct mnt_list *mnts;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
if (strcmp(ap->path, "/-")) {
error(ap->logopt, "expected direct map, exiting");
@@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct
autofs_point *ap, autofs_packet_missing_
}
/* Check if we recorded a mount fail for this key */
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt,
ioctlfd, pkt->wait_queue_token, -ENOENT);
ops->close(ap->logopt, ioctlfd);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index 0ea9b19..b2015f9 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -197,7 +197,7 @@ out_err:
int mount_autofs_indirect(struct autofs_point *ap, const char *root)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int status;
int map;
@@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct
autofs_point *ap, autofs_packet_missin
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt, ap->ioctlfd,
pkt->wait_queue_token, -ENOENT);
cache_unlock(me->mc);
diff --git a/daemon/lookup.c b/daemon/lookup.c
index 62071df..9a8fa7e 100644
--- a/daemon/lookup.c
+++ b/daemon/lookup.c
@@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct
autofs_point *ap, struct map_
struct map_source *instance;
char src_file[] = "file";
char src_prog[] = "program";
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct stat st;
char *type, *format;
@@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct
autofs_point *ap, struct map_sourc
{
struct map_source *instance;
const char *format;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
return lookup_amd_instance(ap, map, name, name_len);
@@ -1079,7 +1079,7 @@ static void update_negative_cache(struct
autofs_point *ap, struct map_source *so
else
map = entry->maps;
if (map) {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int rv = CHE_FAIL;
cache_writelock(map->mc);
diff --git a/daemon/state.c b/daemon/state.c
index 3174a9c..08828b1 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
pthread_t thid;
struct readmap_args *ra;
int status;
- int now = time(NULL);
+ int now = monotonic_time(NULL);
debug(ap->logopt, "state %d path %s", ap->state, ap->path);
diff --git a/include/automount.h b/include/automount.h
index 447aba1..7bbf859 100644
--- a/include/automount.h
+++ b/include/automount.h
@@ -565,6 +565,15 @@ do { \
fatal(_m_unlock); \
} while(0)
+static inline time_t monotonic_time(time_t *t)
+{
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (t)
+ *t = (time_t) ts.tv_sec;
+ return (time_t) ts.tv_sec;
+}
+
/* Expire alarm handling routines */
int alarm_start_handler(void);
int alarm_add(struct autofs_point *ap, time_t seconds);
diff --git a/lib/alarm.c b/lib/alarm.c
index 5b98b2d..7563c9b 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
struct list_head *head;
struct list_head *p;
struct alarm *new;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t next_alarm = 0;
unsigned int empty = 1;
int status;
@@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)
first = list_entry(head->next, struct alarm, list);
- now = time(NULL);
+ now = monotonic_time(NULL);
if (first->time > now) {
struct timespec nsecs;
diff --git a/lib/cache.c b/lib/cache.c
index 631d275..44e323d 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
struct map_source *ms, const char *key,
time_t timeout)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
struct mapent *me;
int rv = CHE_OK;
diff --git a/lib/master.c b/lib/master.c
index 6c38b1c..cca8371 100644
--- a/lib/master.c
+++ b/lib/master.c
@@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char
*type, const char *name)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
this = list_entry(p, struct master_mapent, list);
p = p->next;
@@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
unsigned int count = 0;
this = list_entry(p, struct master_mapent, list);
diff --git a/modules/dclist.c b/modules/dclist.c
index af21ce0..4daa199 100644
--- a/modules/dclist.c
+++ b/modules/dclist.c
@@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt,
const char *uri)
if (!list)
goto out_error;
- dclist->expire = time(NULL) + min_ttl;
+ dclist->expire = monotonic_time(NULL) + min_ttl;
dclist->uri = list;
return dclist;
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index 7c982c6..4e52fce 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
{
char buf[MAX_ERR_BUF];
struct mapent_cache *mc;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *lkp_key;
char *prefix;
size_t map_key_len;
@@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc = source->mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
struct mapent_cache *mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
index 526f294..9da4f8e 100644
--- a/modules/lookup_hesiod.c
+++ b/modules/lookup_hesiod.c
@@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, key, best_record, time(NULL));
+ ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
hesiod_free_list(ctxt->hesiod_context, hes_result);
@@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
+ ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
cache_unlock(mc);
if (hes_result)
@@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
index 0d48356..8c4bbd9 100644
--- a/modules/lookup_hosts.c
+++ b/modules/lookup_hosts.c
@@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
struct mapent *me;
char *mapent = NULL;
int mapent_len;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int ret;
source = ap->entry->current;
@@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
index 5da613e..d45e7d1 100644
--- a/modules/lookup_ldap.c
+++ b/modules/lookup_ldap.c
@@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct
lookup_context *ctxt)
uris_mutex_lock(ctxt);
if (ctxt->dclist) {
- if (!ldap || ctxt->dclist->expire < time(NULL)) {
+ if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
free_dclist(ctxt->dclist);
ctxt->dclist = NULL;
}
@@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap,
struct map_source *source,
struct mapent_cache *mc;
int rv, i, l, ql, count;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *query;
LDAPMessage *result = NULL, *e;
char *class, *info, *entry;
@@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
struct berval **bvKey;
struct berval **bvValues;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int rv, l, ql, count;
int ret = CHE_MISSING;
@@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
int status;
@@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index d5eba47..17d3dde 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
mapent = ENTRY_VAL(this, 1);
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
nis_freeresult(result);
@@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me, *exists;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret = 0;
@@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_program.c b/modules/lookup_program.c
index a3a7e98..eff774b 100644
--- a/modules/lookup_program.c
+++ b/modules/lookup_program.c
@@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", start, time(NULL));
+ ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
start++;
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, start, time(NULL));
+ ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, match, start, time(NULL));
+ ret = cache_update(mc, source, match, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(match);
@@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
@@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
* proceed with the program map lookup.
*/
if (strchr(name, '/') ||
- me->age + ap->negative_timeout > time(NULL)) {
+ me->age + ap->negative_timeout > monotonic_time(NULL)) {
char *ent = NULL;
if (me->mapent) {
diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
index 528ab41..d685ccf 100644
--- a/modules/lookup_sss.c
+++ b/modules/lookup_sss.c
@@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc;
struct mapent *we;
void *sss_ctxt = NULL;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char buf[MAX_ERR_BUF];
char *value = NULL;
char *s_key;
@@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
struct map_source *source;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
@@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
index fb3caaa..d0c3e80 100644
--- a/modules/lookup_userhome.c
+++ b/modules/lookup_userhome.c
@@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char
*name, int name_len, void *
}
cache_writelock(mc);
- ret = cache_update(mc, source, name, NULL, time(NULL));
+ ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
index fcf470a..3ffa4b6 100644
--- a/modules/lookup_yp.c
+++ b/modules/lookup_yp.c
@@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
return CHE_FAIL;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
return ret;
@@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
index 4846e7f..05ea1c1 100644
--- a/modules/mount_autofs.c
+++ b/modules/mount_autofs.c
@@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const
char *root, const char *name,
source = master_add_map_source(entry,
info->type, info->format,
- time(NULL), argc, argv);
+ monotonic_time(NULL), argc, argv);
if (!source) {
error(ap->logopt,
MODPREFIX "failed to add map source to entry");
diff --git a/modules/parse_amd.c b/modules/parse_amd.c
index 899be40..6e29c6c 100644
--- a/modules/parse_amd.c
+++ b/modules/parse_amd.c
@@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point
*ap, const char *name,
"hosts", "sun", argc, pargv);
if (!instance) {
instance = master_add_source_instance(source,
- "hosts", "sun", time(NULL), argc, pargv);
+ "hosts", "sun", monotonic_time(NULL), argc, pargv);
if (!instance) {
error(ap->logopt, MODPREFIX
"failed to create source instance for hosts map");
diff --git a/modules/replicated.c b/modules/replicated.c
index 0f0cc51..8da1148 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -69,14 +69,14 @@ void seed_random(void)
fd = open_fd("/dev/urandom", O_RDONLY);
if (fd < 0) {
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
return;
}
if (read(fd, &seed, sizeof(seed)) != -1)
srandom(seed);
else
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
close(fd);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 10:28 ` Ning Yu
@ 2015-09-16 10:43 ` Ian Kent
2015-09-16 11:02 ` Ning Yu
0 siblings, 1 reply; 32+ messages in thread
From: Ian Kent @ 2015-09-16 10:43 UTC (permalink / raw)
To: Ning Yu; +Cc: autofs
On Wed, 2015-09-16 at 18:28 +0800, Ning Yu wrote:
> On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
> > On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
> >> Hi,
> >>
> >> I have composed a patch for this issue, it works in my side, what it
> >> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
> >>
> >> Would anyone please help to review it? Thanks in advance.
> >
> > Are you joking!
> > How is this meant to apply to the current source, it won't.
> >
> > If you can manage to post a sane patch you will need to break it up into
> > a few separate standalone patches with sane explanations of what each
> > one is meant to achieve.
>
> I'm sorry, not to offend, the previous patch was huge because all the call to
> time() or gettimeofday() functions are replaced with clock_gettime().
Encountering this after a generally unpleasant day is bound to get a
short and unpleasant response, ;)
>
> Please allow me to re-send the patch, this time I have splitted it into
> several smaller patches, hope it won't be as stupid as previous one.
Well, I see those posts but there are still problems with your email
program.
Apart from the DOS line ends all the tabs appear to have been collapsed
to single spaces.
I really don't want to go through and apply these hunk by hunk manually
when you must have a properly formatted patch already.
>
> >
> >>
> >> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
> >> From: Yu Ning <ning.yu@ubuntu.com>
> >> Date: Wed, 16 Sep 2015 15:56:21 +0800
> >> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
> >>
> >> This patch is to fix the issue that a mount point may not be
> >> automatically unmounted after a system date/time change.
> >>
> >> Reproducer with 100% failrate:
> >
> > Since of you to hammer the result of the problem you've identified
> > rather than just explain the problem and what needs to be done to
> > resolve it in a polite and sensible manner.
> >
--
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^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 10:43 ` Ian Kent
@ 2015-09-16 11:02 ` Ning Yu
2015-09-16 11:21 ` Ian Kent
0 siblings, 1 reply; 32+ messages in thread
From: Ning Yu @ 2015-09-16 11:02 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
On Wed, Sep 16, 2015 at 6:43 PM, Ian Kent <raven@themaw.net> wrote:
> On Wed, 2015-09-16 at 18:28 +0800, Ning Yu wrote:
>> On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
>> > On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
>> >> Hi,
>> >>
>> >> I have composed a patch for this issue, it works in my side, what it
>> >> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
>> >>
>> >> Would anyone please help to review it? Thanks in advance.
>> >
>> > Are you joking!
>> > How is this meant to apply to the current source, it won't.
>> >
>> > If you can manage to post a sane patch you will need to break it up into
>> > a few separate standalone patches with sane explanations of what each
>> > one is meant to achieve.
>>
>> I'm sorry, not to offend, the previous patch was huge because all the call to
>> time() or gettimeofday() functions are replaced with clock_gettime().
>
> Encountering this after a generally unpleasant day is bound to get a
> short and unpleasant response, ;)
>
Best wishes for you and have a nice day/night :)
>>
>> Please allow me to re-send the patch, this time I have splitted it into
>> several smaller patches, hope it won't be as stupid as previous one.
>
> Well, I see those posts but there are still problems with your email
> program.
>
> Apart from the DOS line ends all the tabs appear to have been collapsed
> to single spaces.
>
> I really don't want to go through and apply these hunk by hunk manually
> when you must have a properly formatted patch already.
>
Thanks for pointing it out, I will have to fix my email client issue first and
resend the patches. Sorry for wasting you so much of time.
>>
>> >
>> >>
>> >> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
>> >> From: Yu Ning <ning.yu@ubuntu.com>
>> >> Date: Wed, 16 Sep 2015 15:56:21 +0800
>> >> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
>> >>
>> >> This patch is to fix the issue that a mount point may not be
>> >> automatically unmounted after a system date/time change.
>> >>
>> >> Reproducer with 100% failrate:
>> >
>> > Since of you to hammer the result of the problem you've identified
>> > rather than just explain the problem and what needs to be done to
>> > resolve it in a polite and sensible manner.
>> >
>
>
--
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^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 11:02 ` Ning Yu
@ 2015-09-16 11:21 ` Ian Kent
2015-09-17 3:48 ` [PATCH v3 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-17 4:02 ` Mount point not auto unmounted after system date/time change Ning Yu
0 siblings, 2 replies; 32+ messages in thread
From: Ian Kent @ 2015-09-16 11:21 UTC (permalink / raw)
To: Ning Yu; +Cc: autofs
On Wed, 2015-09-16 at 19:02 +0800, Ning Yu wrote:
> On Wed, Sep 16, 2015 at 6:43 PM, Ian Kent <raven@themaw.net> wrote:
> > On Wed, 2015-09-16 at 18:28 +0800, Ning Yu wrote:
> >> On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
> >> > On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
> >> >> Hi,
> >> >>
> >> >> I have composed a patch for this issue, it works in my side, what it
> >> >> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
> >> >>
> >> >> Would anyone please help to review it? Thanks in advance.
> >> >
> >> > Are you joking!
> >> > How is this meant to apply to the current source, it won't.
> >> >
> >> > If you can manage to post a sane patch you will need to break it up into
> >> > a few separate standalone patches with sane explanations of what each
> >> > one is meant to achieve.
> >>
> >> I'm sorry, not to offend, the previous patch was huge because all the call to
> >> time() or gettimeofday() functions are replaced with clock_gettime().
> >
> > Encountering this after a generally unpleasant day is bound to get a
> > short and unpleasant response, ;)
> >
>
> Best wishes for you and have a nice day/night :)
>
> >>
> >> Please allow me to re-send the patch, this time I have splitted it into
> >> several smaller patches, hope it won't be as stupid as previous one.
> >
> > Well, I see those posts but there are still problems with your email
> > program.
> >
> > Apart from the DOS line ends all the tabs appear to have been collapsed
> > to single spaces.
> >
> > I really don't want to go through and apply these hunk by hunk manually
> > when you must have a properly formatted patch already.
> >
>
> Thanks for pointing it out, I will have to fix my email client issue first and
> resend the patches. Sorry for wasting you so much of time.
A couple of other small things.
Please make the title of the patch email the same as the tittle of the
patch. And if possible add a [PATCH x/y] prefix to the title, x being
the ordering of the patch within the y patches posted.
And in patch titles I commonly use "autofs-n-v-r - actual title".
So for example one of these would have a title like:
autofs-5.1.1 - Use monotonic clock instead of time()
assuming you had made them against the 5.1.1 source.
I've also started to use (quite recently in fact) "Signed-off-by:" in
patches so please add yours too, I don't feel right about adding it for
someone else as it's an assumption that may or may not be correct.
These things aren't a big deal as I can change most of them myself
easily if it's not convenient for you to do it.
>
> >>
> >> >
> >> >>
> >> >> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
> >> >> From: Yu Ning <ning.yu@ubuntu.com>
> >> >> Date: Wed, 16 Sep 2015 15:56:21 +0800
> >> >> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
> >> >>
> >> >> This patch is to fix the issue that a mount point may not be
> >> >> automatically unmounted after a system date/time change.
> >> >>
> >> >> Reproducer with 100% failrate:
> >> >
> >> > Since of you to hammer the result of the problem you've identified
> >> > rather than just explain the problem and what needs to be done to
> >> > resolve it in a polite and sensible manner.
> >> >
> >
> >
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* [PATCH v3 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday().
2015-09-16 11:21 ` Ian Kent
@ 2015-09-17 3:48 ` Yu Ning
2015-09-17 3:48 ` [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
2015-09-17 3:48 ` [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
2015-09-17 4:02 ` Mount point not auto unmounted after system date/time change Ning Yu
1 sibling, 2 replies; 32+ messages in thread
From: Yu Ning @ 2015-09-17 3:48 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
The time returned by gettimeofday() is affected by discontinuous jumps
in the system time, so it causes an issue that autofs may not auto
unmount a mount point if system time is manually changed by the system
administrator.
To fix the issue we can use clock_gettime(CLOCK_MONOTONIC) instead of
gettimeofday().
A new function monotonic_elapsed() is introduced in rpc_subs.h as a
timespec version of elapsed().
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
daemon/direct.c | 12 ++++++------
daemon/indirect.c | 12 ++++++------
include/rpc_subs.h | 1 +
lib/alarm.c | 6 +++---
lib/rpc_subs.c | 17 ++++++++++++-----
modules/replicated.c | 30 ++++++++++++++----------------
6 files changed, 42 insertions(+), 36 deletions(-)
diff --git a/daemon/direct.c b/daemon/direct.c
index 5569299..cdd7f49 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -1041,7 +1041,7 @@ int handle_packet_expire_direct(struct autofs_point *ap, autofs_packet_expire_di
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -1159,9 +1159,9 @@ int handle_packet_expire_direct(struct autofs_point *ap, autofs_packet_expire_di
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -1296,7 +1296,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
char buf[MAX_ERR_BUF];
int status = 0;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int ioctlfd, len, state;
unsigned int kver_major = get_kver_major();
unsigned int kver_minor = get_kver_minor();
@@ -1478,9 +1478,9 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index a04a624..0ea9b19 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -636,7 +636,7 @@ int handle_packet_expire_indirect(struct autofs_point *ap, autofs_packet_expire_
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -691,9 +691,9 @@ int handle_packet_expire_indirect(struct autofs_point *ap, autofs_packet_expire_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -795,7 +795,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
char buf[MAX_ERR_BUF];
struct pending_args *mt;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
struct mapent *me;
int status, state;
@@ -884,9 +884,9 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/include/rpc_subs.h b/include/rpc_subs.h
index b6d59f9..e329224 100644
--- a/include/rpc_subs.h
+++ b/include/rpc_subs.h
@@ -71,6 +71,7 @@ int rpc_portmap_getport(struct conn_info *, struct pmap *, unsigned short *);
int rpc_ping_proto(struct conn_info *);
int rpc_ping(const char *, long, long, unsigned int);
double elapsed(struct timeval, struct timeval);
+double monotonic_elapsed(struct timespec, struct timespec);
int rpc_time(const char *, unsigned int, unsigned int, long, long, unsigned int, double *);
const char *get_addr_string(struct sockaddr *, char *, socklen_t);
diff --git a/lib/alarm.c b/lib/alarm.c
index 0f04ef8..65a80ae 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -178,14 +178,14 @@ static void *alarm_handler(void *arg)
now = time(NULL);
if (first->time > now) {
- struct timeval usecs;
+ struct timespec nsecs;
/*
* Wait for alarm to trigger or a new alarm
* to be added.
*/
- gettimeofday(&usecs, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &nsecs);
expire.tv_sec = first->time;
- expire.tv_nsec = usecs.tv_usec * 1000;
+ expire.tv_nsec = nsecs.tv_nsec;
status = pthread_cond_timedwait(&cond, &mutex, &expire);
if (status && status != ETIMEDOUT)
diff --git a/lib/rpc_subs.c b/lib/rpc_subs.c
index 846c40e..e8c0ca5 100644
--- a/lib/rpc_subs.c
+++ b/lib/rpc_subs.c
@@ -1086,25 +1086,32 @@ double elapsed(struct timeval start, struct timeval end)
return t2-t1;
}
+double monotonic_elapsed(struct timespec start, struct timespec end)
+{
+ double t1, t2;
+ t1 = (double)start.tv_sec + (double)start.tv_nsec/(1000*1000*1000);
+ t2 = (double)end.tv_sec + (double)end.tv_nsec/(1000*1000*1000);
+ return t2-t1;
+}
+
int rpc_time(const char *host,
unsigned int ping_vers, unsigned int ping_proto,
long seconds, long micros, unsigned int option, double *result)
{
int status;
double taken;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
int proto = (ping_proto & RPC_PING_UDP) ? IPPROTO_UDP : IPPROTO_TCP;
unsigned long vers = ping_vers;
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = __rpc_ping(host, vers, proto, seconds, micros, option);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == RPC_PING_FAIL || status < 0)
return status;
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
if (result != NULL)
*result = taken;
diff --git a/modules/replicated.c b/modules/replicated.c
index 32860d5..0f0cc51 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -231,8 +231,7 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
socklen_t len = INET6_ADDRSTRLEN;
char buf[len + 1];
struct pmap parms;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
unsigned int supported = 0;
double taken = 0;
int status, count = 0;
@@ -292,9 +291,9 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -306,7 +305,7 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
debug(logopt,
"nfs v4 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v4 rpc ping time: %f", reply);
}
taken += reply;
@@ -351,9 +350,9 @@ v3_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -365,7 +364,7 @@ v3_ver:
debug(logopt,
"nfs v3 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v3 rpc ping time: %f", reply);
}
taken += reply;
@@ -407,9 +406,9 @@ v2_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT)
supported = status;
else if (status > 0) {
@@ -420,7 +419,7 @@ v2_ver:
debug(logopt,
"nfs v2 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);;
+ reply = monotonic_elapsed(start, end);;
debug(logopt, "nfs v2 rpc ping time: %f", reply);
}
taken += reply;
@@ -523,8 +522,7 @@ static int get_supported_ver_and_cost(unsigned logopt, struct host *host,
struct conn_info pm_info, rpc_info;
int proto;
unsigned int vers;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
double taken = 0;
time_t timeout = RPC_TIMEOUT;
int status = 0;
@@ -610,16 +608,16 @@ static int get_supported_ver_and_cost(unsigned logopt, struct host *host,
if (status == -EHOSTUNREACH)
goto done;
else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(&rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status > 0) {
if (random_selection) {
/* Random value between 0 and 1 */
taken = ((float) random())/((float) RAND_MAX+1);
debug(logopt, "random selection time %f", taken);
} else {
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
debug(logopt, "rpc ping time %f", taken);
}
}
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-17 3:48 ` [PATCH v3 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
@ 2015-09-17 3:48 ` Yu Ning
2015-09-17 6:49 ` Ian Kent
2015-09-17 3:48 ` [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
1 sibling, 1 reply; 32+ messages in thread
From: Yu Ning @ 2015-09-17 3:48 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
we need to switch to use the monotic clock.
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
lib/alarm.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/lib/alarm.c b/lib/alarm.c
index 65a80ae..5b98b2d 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -23,7 +23,7 @@ struct alarm {
};
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t cond;
static LIST_HEAD(alarms);
#define alarm_lock() \
@@ -212,6 +212,7 @@ int alarm_start_handler(void)
pthread_t thid;
pthread_attr_t attrs;
pthread_attr_t *pattrs = &attrs;
+ pthread_condattr_t condattrs;
int status;
status = pthread_attr_init(pattrs);
@@ -224,8 +225,18 @@ int alarm_start_handler(void)
#endif
}
+ status = pthread_condattr_init(&condattrs);
+ if (status)
+ fatal(status);
+
+ pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
+ pthread_cond_init(&cond, &condattrs);
+
status = pthread_create(&thid, pattrs, alarm_handler, NULL);
+ pthread_condattr_destroy(&condattrs);
+ pthread_condattr_destroy(&cond);
+
if (pattrs)
pthread_attr_destroy(pattrs);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time().
2015-09-17 3:48 ` [PATCH v3 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-17 3:48 ` [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
@ 2015-09-17 3:48 ` Yu Ning
2015-09-17 7:04 ` Ian Kent
1 sibling, 1 reply; 32+ messages in thread
From: Yu Ning @ 2015-09-17 3:48 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
A new function monotonic_time() is introduced in automount.h as a
monotonic version of time(), all the calls to time() have been switched
to use this new function.
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
daemon/automount.c | 4 ++--
daemon/direct.c | 4 ++--
daemon/indirect.c | 4 ++--
daemon/lookup.c | 6 +++---
daemon/state.c | 2 +-
include/automount.h | 9 +++++++++
lib/alarm.c | 4 ++--
lib/cache.c | 2 +-
lib/master.c | 4 ++--
modules/dclist.c | 2 +-
modules/lookup_file.c | 8 ++++----
modules/lookup_hesiod.c | 6 +++---
modules/lookup_hosts.c | 4 ++--
modules/lookup_ldap.c | 10 +++++-----
modules/lookup_nisplus.c | 10 +++++-----
modules/lookup_program.c | 10 +++++-----
modules/lookup_sss.c | 6 +++---
modules/lookup_userhome.c | 2 +-
modules/lookup_yp.c | 8 ++++----
modules/mount_autofs.c | 2 +-
modules/parse_amd.c | 2 +-
modules/replicated.c | 4 ++--
22 files changed, 61 insertions(+), 52 deletions(-)
diff --git a/daemon/automount.c b/daemon/automount.c
index 229cb1a..a49ceee 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
break;
case SIGHUP:
- do_hup_signal(master_list, time(NULL));
+ do_hup_signal(master_list, monotonic_time(NULL));
break;
default:
@@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
unsigned ghost, logging, daemon_check;
unsigned dumpmaps, foreground, have_global_options;
time_t timeout;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct rlimit rlim;
const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
static const struct option long_options[] = {
diff --git a/daemon/direct.c b/daemon/direct.c
index cdd7f49..470a719 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
struct mapent_cache *nc, *mc;
struct mapent *me, *ne, *nested;
struct mnt_list *mnts;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
if (strcmp(ap->path, "/-")) {
error(ap->logopt, "expected direct map, exiting");
@@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
}
/* Check if we recorded a mount fail for this key */
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt,
ioctlfd, pkt->wait_queue_token, -ENOENT);
ops->close(ap->logopt, ioctlfd);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index 0ea9b19..b2015f9 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -197,7 +197,7 @@ out_err:
int mount_autofs_indirect(struct autofs_point *ap, const char *root)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int status;
int map;
@@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt, ap->ioctlfd,
pkt->wait_queue_token, -ENOENT);
cache_unlock(me->mc);
diff --git a/daemon/lookup.c b/daemon/lookup.c
index 62071df..9a8fa7e 100644
--- a/daemon/lookup.c
+++ b/daemon/lookup.c
@@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct autofs_point *ap, struct map_
struct map_source *instance;
char src_file[] = "file";
char src_prog[] = "program";
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct stat st;
char *type, *format;
@@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct autofs_point *ap, struct map_sourc
{
struct map_source *instance;
const char *format;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
return lookup_amd_instance(ap, map, name, name_len);
@@ -1079,7 +1079,7 @@ static void update_negative_cache(struct autofs_point *ap, struct map_source *so
else
map = entry->maps;
if (map) {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int rv = CHE_FAIL;
cache_writelock(map->mc);
diff --git a/daemon/state.c b/daemon/state.c
index 3174a9c..08828b1 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
pthread_t thid;
struct readmap_args *ra;
int status;
- int now = time(NULL);
+ int now = monotonic_time(NULL);
debug(ap->logopt, "state %d path %s", ap->state, ap->path);
diff --git a/include/automount.h b/include/automount.h
index 447aba1..7bbf859 100644
--- a/include/automount.h
+++ b/include/automount.h
@@ -565,6 +565,15 @@ do { \
fatal(_m_unlock); \
} while(0)
+static inline time_t monotonic_time(time_t *t)
+{
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (t)
+ *t = (time_t) ts.tv_sec;
+ return (time_t) ts.tv_sec;
+}
+
/* Expire alarm handling routines */
int alarm_start_handler(void);
int alarm_add(struct autofs_point *ap, time_t seconds);
diff --git a/lib/alarm.c b/lib/alarm.c
index 5b98b2d..7563c9b 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
struct list_head *head;
struct list_head *p;
struct alarm *new;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t next_alarm = 0;
unsigned int empty = 1;
int status;
@@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)
first = list_entry(head->next, struct alarm, list);
- now = time(NULL);
+ now = monotonic_time(NULL);
if (first->time > now) {
struct timespec nsecs;
diff --git a/lib/cache.c b/lib/cache.c
index 631d275..44e323d 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
struct map_source *ms, const char *key,
time_t timeout)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
struct mapent *me;
int rv = CHE_OK;
diff --git a/lib/master.c b/lib/master.c
index 6c38b1c..cca8371 100644
--- a/lib/master.c
+++ b/lib/master.c
@@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char *type, const char *name)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
this = list_entry(p, struct master_mapent, list);
p = p->next;
@@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
unsigned int count = 0;
this = list_entry(p, struct master_mapent, list);
diff --git a/modules/dclist.c b/modules/dclist.c
index af21ce0..4daa199 100644
--- a/modules/dclist.c
+++ b/modules/dclist.c
@@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt, const char *uri)
if (!list)
goto out_error;
- dclist->expire = time(NULL) + min_ttl;
+ dclist->expire = monotonic_time(NULL) + min_ttl;
dclist->uri = list;
return dclist;
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index 7c982c6..4e52fce 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
{
char buf[MAX_ERR_BUF];
struct mapent_cache *mc;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *lkp_key;
char *prefix;
size_t map_key_len;
@@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc = source->mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
struct mapent_cache *mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
index 526f294..9da4f8e 100644
--- a/modules/lookup_hesiod.c
+++ b/modules/lookup_hesiod.c
@@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, key, best_record, time(NULL));
+ ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
hesiod_free_list(ctxt->hesiod_context, hes_result);
@@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
+ ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
cache_unlock(mc);
if (hes_result)
@@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
index 0d48356..8c4bbd9 100644
--- a/modules/lookup_hosts.c
+++ b/modules/lookup_hosts.c
@@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
struct mapent *me;
char *mapent = NULL;
int mapent_len;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int ret;
source = ap->entry->current;
@@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
index 5da613e..d45e7d1 100644
--- a/modules/lookup_ldap.c
+++ b/modules/lookup_ldap.c
@@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct lookup_context *ctxt)
uris_mutex_lock(ctxt);
if (ctxt->dclist) {
- if (!ldap || ctxt->dclist->expire < time(NULL)) {
+ if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
free_dclist(ctxt->dclist);
ctxt->dclist = NULL;
}
@@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap, struct map_source *source,
struct mapent_cache *mc;
int rv, i, l, ql, count;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *query;
LDAPMessage *result = NULL, *e;
char *class, *info, *entry;
@@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
struct berval **bvKey;
struct berval **bvValues;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int rv, l, ql, count;
int ret = CHE_MISSING;
@@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
int status;
@@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index d5eba47..17d3dde 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
mapent = ENTRY_VAL(this, 1);
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
nis_freeresult(result);
@@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me, *exists;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret = 0;
@@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_program.c b/modules/lookup_program.c
index a3a7e98..eff774b 100644
--- a/modules/lookup_program.c
+++ b/modules/lookup_program.c
@@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", start, time(NULL));
+ ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
start++;
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, start, time(NULL));
+ ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, match, start, time(NULL));
+ ret = cache_update(mc, source, match, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(match);
@@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
@@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
* proceed with the program map lookup.
*/
if (strchr(name, '/') ||
- me->age + ap->negative_timeout > time(NULL)) {
+ me->age + ap->negative_timeout > monotonic_time(NULL)) {
char *ent = NULL;
if (me->mapent) {
diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
index 528ab41..d685ccf 100644
--- a/modules/lookup_sss.c
+++ b/modules/lookup_sss.c
@@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc;
struct mapent *we;
void *sss_ctxt = NULL;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char buf[MAX_ERR_BUF];
char *value = NULL;
char *s_key;
@@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
struct map_source *source;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
@@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
index fb3caaa..d0c3e80 100644
--- a/modules/lookup_userhome.c
+++ b/modules/lookup_userhome.c
@@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
}
cache_writelock(mc);
- ret = cache_update(mc, source, name, NULL, time(NULL));
+ ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
index fcf470a..3ffa4b6 100644
--- a/modules/lookup_yp.c
+++ b/modules/lookup_yp.c
@@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
return CHE_FAIL;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
return ret;
@@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
index 4846e7f..05ea1c1 100644
--- a/modules/mount_autofs.c
+++ b/modules/mount_autofs.c
@@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name,
source = master_add_map_source(entry,
info->type, info->format,
- time(NULL), argc, argv);
+ monotonic_time(NULL), argc, argv);
if (!source) {
error(ap->logopt,
MODPREFIX "failed to add map source to entry");
diff --git a/modules/parse_amd.c b/modules/parse_amd.c
index 899be40..6e29c6c 100644
--- a/modules/parse_amd.c
+++ b/modules/parse_amd.c
@@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point *ap, const char *name,
"hosts", "sun", argc, pargv);
if (!instance) {
instance = master_add_source_instance(source,
- "hosts", "sun", time(NULL), argc, pargv);
+ "hosts", "sun", monotonic_time(NULL), argc, pargv);
if (!instance) {
error(ap->logopt, MODPREFIX
"failed to create source instance for hosts map");
diff --git a/modules/replicated.c b/modules/replicated.c
index 0f0cc51..8da1148 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -69,14 +69,14 @@ void seed_random(void)
fd = open_fd("/dev/urandom", O_RDONLY);
if (fd < 0) {
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
return;
}
if (read(fd, &seed, sizeof(seed)) != -1)
srandom(seed);
else
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
close(fd);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-16 11:21 ` Ian Kent
2015-09-17 3:48 ` [PATCH v3 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
@ 2015-09-17 4:02 ` Ning Yu
2015-09-17 4:09 ` [PATCH v4 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
` (2 more replies)
1 sibling, 3 replies; 32+ messages in thread
From: Ning Yu @ 2015-09-17 4:02 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
On Wed, Sep 16, 2015 at 7:21 PM, Ian Kent <raven@themaw.net> wrote:
> On Wed, 2015-09-16 at 19:02 +0800, Ning Yu wrote:
>> On Wed, Sep 16, 2015 at 6:43 PM, Ian Kent <raven@themaw.net> wrote:
>> > On Wed, 2015-09-16 at 18:28 +0800, Ning Yu wrote:
>> >> On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
>> >> > On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
>> >> >> Hi,
>> >> >>
>> >> >> I have composed a patch for this issue, it works in my side, what it
>> >> >> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
>> >> >>
>> >> >> Would anyone please help to review it? Thanks in advance.
>> >> >
>> >> > Are you joking!
>> >> > How is this meant to apply to the current source, it won't.
>> >> >
>> >> > If you can manage to post a sane patch you will need to break it up into
>> >> > a few separate standalone patches with sane explanations of what each
>> >> > one is meant to achieve.
>> >>
>> >> I'm sorry, not to offend, the previous patch was huge because all the call to
>> >> time() or gettimeofday() functions are replaced with clock_gettime().
>> >
>> > Encountering this after a generally unpleasant day is bound to get a
>> > short and unpleasant response, ;)
>> >
>>
>> Best wishes for you and have a nice day/night :)
>>
>> >>
>> >> Please allow me to re-send the patch, this time I have splitted it into
>> >> several smaller patches, hope it won't be as stupid as previous one.
>> >
>> > Well, I see those posts but there are still problems with your email
>> > program.
>> >
>> > Apart from the DOS line ends all the tabs appear to have been collapsed
>> > to single spaces.
>> >
>> > I really don't want to go through and apply these hunk by hunk manually
>> > when you must have a properly formatted patch already.
>> >
>>
>> Thanks for pointing it out, I will have to fix my email client issue first and
>> resend the patches. Sorry for wasting you so much of time.
>
> A couple of other small things.
>
> Please make the title of the patch email the same as the tittle of the
> patch. And if possible add a [PATCH x/y] prefix to the title, x being
> the ordering of the patch within the y patches posted.
>
> And in patch titles I commonly use "autofs-n-v-r - actual title".
>
> So for example one of these would have a title like:
> autofs-5.1.1 - Use monotonic clock instead of time()
>
> assuming you had made them against the 5.1.1 source.
>
> I've also started to use (quite recently in fact) "Signed-off-by:" in
> patches so please add yours too, I don't feel right about adding it for
> someone else as it's an assumption that may or may not be correct.
>
> These things aren't a big deal as I can change most of them myself
> easily if it's not convenient for you to do it.
>
Thanks very much for the suggestions, I have resent the v3 patches with git
command, by CCing myself I checked the patches just now:
* the Signed-off-by part is added;
* the email subject is same with the patch title;
* and the autofs-5.1.1 prefix is added;
* however the EOL is still \r\n, this is really weird, because I use Linux
and vim to do the job, and the original patches are generated with
'git format-patch', they contains unix EOL as expected, and they are sent
with 'git send-email', not sure why gmail convert them to dos EOL.
Maybe I have to resend them as attachment.
>>
>> >>
>> >> >
>> >> >>
>> >> >> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
>> >> >> From: Yu Ning <ning.yu@ubuntu.com>
>> >> >> Date: Wed, 16 Sep 2015 15:56:21 +0800
>> >> >> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
>> >> >>
>> >> >> This patch is to fix the issue that a mount point may not be
>> >> >> automatically unmounted after a system date/time change.
>> >> >>
>> >> >> Reproducer with 100% failrate:
>> >> >
>> >> > Since of you to hammer the result of the problem you've identified
>> >> > rather than just explain the problem and what needs to be done to
>> >> > resolve it in a polite and sensible manner.
>> >> >
>> >
>> >
>
>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* [PATCH v4 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday().
2015-09-17 4:02 ` Mount point not auto unmounted after system date/time change Ning Yu
@ 2015-09-17 4:09 ` Yu Ning
2015-09-17 4:09 ` [PATCH v4 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
2015-09-17 4:09 ` [PATCH v4 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
2015-09-17 4:17 ` Mount point not auto unmounted after system date/time change Ning Yu
2015-09-17 6:05 ` Ian Kent
2 siblings, 2 replies; 32+ messages in thread
From: Yu Ning @ 2015-09-17 4:09 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
[-- Attachment #1: Type: text/plain, Size: 760 bytes --]
The time returned by gettimeofday() is affected by discontinuous jumps
in the system time, so it causes an issue that autofs may not auto
unmount a mount point if system time is manually changed by the system
administrator.
To fix the issue we can use clock_gettime(CLOCK_MONOTONIC) instead of
gettimeofday().
A new function monotonic_elapsed() is introduced in rpc_subs.h as a
timespec version of elapsed().
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
daemon/direct.c | 12 ++++++------
daemon/indirect.c | 12 ++++++------
include/rpc_subs.h | 1 +
lib/alarm.c | 6 +++---
lib/rpc_subs.c | 17 ++++++++++++-----
modules/replicated.c | 30 ++++++++++++++----------------
6 files changed, 42 insertions(+), 36 deletions(-)
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: v4-0001-autofs-5.1.1-use-clock_gettime-instead-of-gettime.patch --]
[-- Type: text/x-patch; name="v4-0001-autofs-5.1.1-use-clock_gettime-instead-of-gettime.patch", Size: 9162 bytes --]
diff --git a/daemon/direct.c b/daemon/direct.c
index 5569299..cdd7f49 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -1041,7 +1041,7 @@ int handle_packet_expire_direct(struct autofs_point *ap, autofs_packet_expire_di
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -1159,9 +1159,9 @@ int handle_packet_expire_direct(struct autofs_point *ap, autofs_packet_expire_di
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -1296,7 +1296,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
char buf[MAX_ERR_BUF];
int status = 0;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int ioctlfd, len, state;
unsigned int kver_major = get_kver_major();
unsigned int kver_minor = get_kver_minor();
@@ -1478,9 +1478,9 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index a04a624..0ea9b19 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -636,7 +636,7 @@ int handle_packet_expire_indirect(struct autofs_point *ap, autofs_packet_expire_
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -691,9 +691,9 @@ int handle_packet_expire_indirect(struct autofs_point *ap, autofs_packet_expire_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -795,7 +795,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
char buf[MAX_ERR_BUF];
struct pending_args *mt;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
struct mapent *me;
int status, state;
@@ -884,9 +884,9 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/include/rpc_subs.h b/include/rpc_subs.h
index b6d59f9..e329224 100644
--- a/include/rpc_subs.h
+++ b/include/rpc_subs.h
@@ -71,6 +71,7 @@ int rpc_portmap_getport(struct conn_info *, struct pmap *, unsigned short *);
int rpc_ping_proto(struct conn_info *);
int rpc_ping(const char *, long, long, unsigned int);
double elapsed(struct timeval, struct timeval);
+double monotonic_elapsed(struct timespec, struct timespec);
int rpc_time(const char *, unsigned int, unsigned int, long, long, unsigned int, double *);
const char *get_addr_string(struct sockaddr *, char *, socklen_t);
diff --git a/lib/alarm.c b/lib/alarm.c
index 0f04ef8..65a80ae 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -178,14 +178,14 @@ static void *alarm_handler(void *arg)
now = time(NULL);
if (first->time > now) {
- struct timeval usecs;
+ struct timespec nsecs;
/*
* Wait for alarm to trigger or a new alarm
* to be added.
*/
- gettimeofday(&usecs, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &nsecs);
expire.tv_sec = first->time;
- expire.tv_nsec = usecs.tv_usec * 1000;
+ expire.tv_nsec = nsecs.tv_nsec;
status = pthread_cond_timedwait(&cond, &mutex, &expire);
if (status && status != ETIMEDOUT)
diff --git a/lib/rpc_subs.c b/lib/rpc_subs.c
index 846c40e..e8c0ca5 100644
--- a/lib/rpc_subs.c
+++ b/lib/rpc_subs.c
@@ -1086,25 +1086,32 @@ double elapsed(struct timeval start, struct timeval end)
return t2-t1;
}
+double monotonic_elapsed(struct timespec start, struct timespec end)
+{
+ double t1, t2;
+ t1 = (double)start.tv_sec + (double)start.tv_nsec/(1000*1000*1000);
+ t2 = (double)end.tv_sec + (double)end.tv_nsec/(1000*1000*1000);
+ return t2-t1;
+}
+
int rpc_time(const char *host,
unsigned int ping_vers, unsigned int ping_proto,
long seconds, long micros, unsigned int option, double *result)
{
int status;
double taken;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
int proto = (ping_proto & RPC_PING_UDP) ? IPPROTO_UDP : IPPROTO_TCP;
unsigned long vers = ping_vers;
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = __rpc_ping(host, vers, proto, seconds, micros, option);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == RPC_PING_FAIL || status < 0)
return status;
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
if (result != NULL)
*result = taken;
diff --git a/modules/replicated.c b/modules/replicated.c
index 32860d5..0f0cc51 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -231,8 +231,7 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
socklen_t len = INET6_ADDRSTRLEN;
char buf[len + 1];
struct pmap parms;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
unsigned int supported = 0;
double taken = 0;
int status, count = 0;
@@ -292,9 +291,9 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -306,7 +305,7 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
debug(logopt,
"nfs v4 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v4 rpc ping time: %f", reply);
}
taken += reply;
@@ -351,9 +350,9 @@ v3_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -365,7 +364,7 @@ v3_ver:
debug(logopt,
"nfs v3 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v3 rpc ping time: %f", reply);
}
taken += reply;
@@ -407,9 +406,9 @@ v2_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT)
supported = status;
else if (status > 0) {
@@ -420,7 +419,7 @@ v2_ver:
debug(logopt,
"nfs v2 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);;
+ reply = monotonic_elapsed(start, end);;
debug(logopt, "nfs v2 rpc ping time: %f", reply);
}
taken += reply;
@@ -523,8 +522,7 @@ static int get_supported_ver_and_cost(unsigned logopt, struct host *host,
struct conn_info pm_info, rpc_info;
int proto;
unsigned int vers;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
double taken = 0;
time_t timeout = RPC_TIMEOUT;
int status = 0;
@@ -610,16 +608,16 @@ static int get_supported_ver_and_cost(unsigned logopt, struct host *host,
if (status == -EHOSTUNREACH)
goto done;
else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(&rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status > 0) {
if (random_selection) {
/* Random value between 0 and 1 */
taken = ((float) random())/((float) RAND_MAX+1);
debug(logopt, "random selection time %f", taken);
} else {
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
debug(logopt, "rpc ping time %f", taken);
}
}
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH v4 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-17 4:09 ` [PATCH v4 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
@ 2015-09-17 4:09 ` Yu Ning
2015-09-17 4:09 ` [PATCH v4 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
1 sibling, 0 replies; 32+ messages in thread
From: Yu Ning @ 2015-09-17 4:09 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
[-- Attachment #1: Type: text/plain, Size: 246 bytes --]
The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
we need to switch to use the monotic clock.
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
lib/alarm.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: v4-0002-autofs-5.1.1-use-monotonic-clock-for-pthread-cond.patch --]
[-- Type: text/x-patch; name="v4-0002-autofs-5.1.1-use-monotonic-clock-for-pthread-cond.patch", Size: 990 bytes --]
diff --git a/lib/alarm.c b/lib/alarm.c
index 65a80ae..5b98b2d 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -23,7 +23,7 @@ struct alarm {
};
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t cond;
static LIST_HEAD(alarms);
#define alarm_lock() \
@@ -212,6 +212,7 @@ int alarm_start_handler(void)
pthread_t thid;
pthread_attr_t attrs;
pthread_attr_t *pattrs = &attrs;
+ pthread_condattr_t condattrs;
int status;
status = pthread_attr_init(pattrs);
@@ -224,8 +225,18 @@ int alarm_start_handler(void)
#endif
}
+ status = pthread_condattr_init(&condattrs);
+ if (status)
+ fatal(status);
+
+ pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
+ pthread_cond_init(&cond, &condattrs);
+
status = pthread_create(&thid, pattrs, alarm_handler, NULL);
+ pthread_condattr_destroy(&condattrs);
+ pthread_condattr_destroy(&cond);
+
if (pattrs)
pthread_attr_destroy(pattrs);
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH v4 3/3] autofs-5.1.1 - use monotonic clock instead of time().
2015-09-17 4:09 ` [PATCH v4 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-17 4:09 ` [PATCH v4 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
@ 2015-09-17 4:09 ` Yu Ning
1 sibling, 0 replies; 32+ messages in thread
From: Yu Ning @ 2015-09-17 4:09 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
[-- Attachment #1: Type: text/plain, Size: 1107 bytes --]
A new function monotonic_time() is introduced in automount.h as a
monotonic version of time(), all the calls to time() have been switched
to use this new function.
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
daemon/automount.c | 4 ++--
daemon/direct.c | 4 ++--
daemon/indirect.c | 4 ++--
daemon/lookup.c | 6 +++---
daemon/state.c | 2 +-
include/automount.h | 9 +++++++++
lib/alarm.c | 4 ++--
lib/cache.c | 2 +-
lib/master.c | 4 ++--
modules/dclist.c | 2 +-
modules/lookup_file.c | 8 ++++----
modules/lookup_hesiod.c | 6 +++---
modules/lookup_hosts.c | 4 ++--
modules/lookup_ldap.c | 10 +++++-----
modules/lookup_nisplus.c | 10 +++++-----
modules/lookup_program.c | 10 +++++-----
modules/lookup_sss.c | 6 +++---
modules/lookup_userhome.c | 2 +-
modules/lookup_yp.c | 8 ++++----
modules/mount_autofs.c | 2 +-
modules/parse_amd.c | 2 +-
modules/replicated.c | 4 ++--
22 files changed, 61 insertions(+), 52 deletions(-)
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: v4-0003-autofs-5.1.1-use-monotonic-clock-instead-of-time.patch --]
[-- Type: text/x-patch; name="v4-0003-autofs-5.1.1-use-monotonic-clock-instead-of-time.patch", Size: 19048 bytes --]
diff --git a/daemon/automount.c b/daemon/automount.c
index 229cb1a..a49ceee 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
break;
case SIGHUP:
- do_hup_signal(master_list, time(NULL));
+ do_hup_signal(master_list, monotonic_time(NULL));
break;
default:
@@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
unsigned ghost, logging, daemon_check;
unsigned dumpmaps, foreground, have_global_options;
time_t timeout;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct rlimit rlim;
const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
static const struct option long_options[] = {
diff --git a/daemon/direct.c b/daemon/direct.c
index cdd7f49..470a719 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
struct mapent_cache *nc, *mc;
struct mapent *me, *ne, *nested;
struct mnt_list *mnts;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
if (strcmp(ap->path, "/-")) {
error(ap->logopt, "expected direct map, exiting");
@@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
}
/* Check if we recorded a mount fail for this key */
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt,
ioctlfd, pkt->wait_queue_token, -ENOENT);
ops->close(ap->logopt, ioctlfd);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index 0ea9b19..b2015f9 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -197,7 +197,7 @@ out_err:
int mount_autofs_indirect(struct autofs_point *ap, const char *root)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int status;
int map;
@@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt, ap->ioctlfd,
pkt->wait_queue_token, -ENOENT);
cache_unlock(me->mc);
diff --git a/daemon/lookup.c b/daemon/lookup.c
index 62071df..9a8fa7e 100644
--- a/daemon/lookup.c
+++ b/daemon/lookup.c
@@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct autofs_point *ap, struct map_
struct map_source *instance;
char src_file[] = "file";
char src_prog[] = "program";
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct stat st;
char *type, *format;
@@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct autofs_point *ap, struct map_sourc
{
struct map_source *instance;
const char *format;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
return lookup_amd_instance(ap, map, name, name_len);
@@ -1079,7 +1079,7 @@ static void update_negative_cache(struct autofs_point *ap, struct map_source *so
else
map = entry->maps;
if (map) {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int rv = CHE_FAIL;
cache_writelock(map->mc);
diff --git a/daemon/state.c b/daemon/state.c
index 3174a9c..08828b1 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
pthread_t thid;
struct readmap_args *ra;
int status;
- int now = time(NULL);
+ int now = monotonic_time(NULL);
debug(ap->logopt, "state %d path %s", ap->state, ap->path);
diff --git a/include/automount.h b/include/automount.h
index 447aba1..7bbf859 100644
--- a/include/automount.h
+++ b/include/automount.h
@@ -565,6 +565,15 @@ do { \
fatal(_m_unlock); \
} while(0)
+static inline time_t monotonic_time(time_t *t)
+{
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (t)
+ *t = (time_t) ts.tv_sec;
+ return (time_t) ts.tv_sec;
+}
+
/* Expire alarm handling routines */
int alarm_start_handler(void);
int alarm_add(struct autofs_point *ap, time_t seconds);
diff --git a/lib/alarm.c b/lib/alarm.c
index 5b98b2d..7563c9b 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
struct list_head *head;
struct list_head *p;
struct alarm *new;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t next_alarm = 0;
unsigned int empty = 1;
int status;
@@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)
first = list_entry(head->next, struct alarm, list);
- now = time(NULL);
+ now = monotonic_time(NULL);
if (first->time > now) {
struct timespec nsecs;
diff --git a/lib/cache.c b/lib/cache.c
index 631d275..44e323d 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
struct map_source *ms, const char *key,
time_t timeout)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
struct mapent *me;
int rv = CHE_OK;
diff --git a/lib/master.c b/lib/master.c
index 6c38b1c..cca8371 100644
--- a/lib/master.c
+++ b/lib/master.c
@@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char *type, const char *name)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
this = list_entry(p, struct master_mapent, list);
p = p->next;
@@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
unsigned int count = 0;
this = list_entry(p, struct master_mapent, list);
diff --git a/modules/dclist.c b/modules/dclist.c
index af21ce0..4daa199 100644
--- a/modules/dclist.c
+++ b/modules/dclist.c
@@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt, const char *uri)
if (!list)
goto out_error;
- dclist->expire = time(NULL) + min_ttl;
+ dclist->expire = monotonic_time(NULL) + min_ttl;
dclist->uri = list;
return dclist;
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index 7c982c6..4e52fce 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
{
char buf[MAX_ERR_BUF];
struct mapent_cache *mc;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *lkp_key;
char *prefix;
size_t map_key_len;
@@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc = source->mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
struct mapent_cache *mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
index 526f294..9da4f8e 100644
--- a/modules/lookup_hesiod.c
+++ b/modules/lookup_hesiod.c
@@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, key, best_record, time(NULL));
+ ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
hesiod_free_list(ctxt->hesiod_context, hes_result);
@@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
+ ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
cache_unlock(mc);
if (hes_result)
@@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
index 0d48356..8c4bbd9 100644
--- a/modules/lookup_hosts.c
+++ b/modules/lookup_hosts.c
@@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
struct mapent *me;
char *mapent = NULL;
int mapent_len;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int ret;
source = ap->entry->current;
@@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
index 5da613e..d45e7d1 100644
--- a/modules/lookup_ldap.c
+++ b/modules/lookup_ldap.c
@@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct lookup_context *ctxt)
uris_mutex_lock(ctxt);
if (ctxt->dclist) {
- if (!ldap || ctxt->dclist->expire < time(NULL)) {
+ if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
free_dclist(ctxt->dclist);
ctxt->dclist = NULL;
}
@@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap, struct map_source *source,
struct mapent_cache *mc;
int rv, i, l, ql, count;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *query;
LDAPMessage *result = NULL, *e;
char *class, *info, *entry;
@@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
struct berval **bvKey;
struct berval **bvValues;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int rv, l, ql, count;
int ret = CHE_MISSING;
@@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
int status;
@@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index d5eba47..17d3dde 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
mapent = ENTRY_VAL(this, 1);
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
nis_freeresult(result);
@@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me, *exists;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret = 0;
@@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_program.c b/modules/lookup_program.c
index a3a7e98..eff774b 100644
--- a/modules/lookup_program.c
+++ b/modules/lookup_program.c
@@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", start, time(NULL));
+ ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
start++;
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, start, time(NULL));
+ ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, match, start, time(NULL));
+ ret = cache_update(mc, source, match, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(match);
@@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
@@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
* proceed with the program map lookup.
*/
if (strchr(name, '/') ||
- me->age + ap->negative_timeout > time(NULL)) {
+ me->age + ap->negative_timeout > monotonic_time(NULL)) {
char *ent = NULL;
if (me->mapent) {
diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
index 528ab41..d685ccf 100644
--- a/modules/lookup_sss.c
+++ b/modules/lookup_sss.c
@@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc;
struct mapent *we;
void *sss_ctxt = NULL;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char buf[MAX_ERR_BUF];
char *value = NULL;
char *s_key;
@@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
struct map_source *source;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
@@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
index fb3caaa..d0c3e80 100644
--- a/modules/lookup_userhome.c
+++ b/modules/lookup_userhome.c
@@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
}
cache_writelock(mc);
- ret = cache_update(mc, source, name, NULL, time(NULL));
+ ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
index fcf470a..3ffa4b6 100644
--- a/modules/lookup_yp.c
+++ b/modules/lookup_yp.c
@@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
return CHE_FAIL;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
return ret;
@@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
index 4846e7f..05ea1c1 100644
--- a/modules/mount_autofs.c
+++ b/modules/mount_autofs.c
@@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name,
source = master_add_map_source(entry,
info->type, info->format,
- time(NULL), argc, argv);
+ monotonic_time(NULL), argc, argv);
if (!source) {
error(ap->logopt,
MODPREFIX "failed to add map source to entry");
diff --git a/modules/parse_amd.c b/modules/parse_amd.c
index 899be40..6e29c6c 100644
--- a/modules/parse_amd.c
+++ b/modules/parse_amd.c
@@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point *ap, const char *name,
"hosts", "sun", argc, pargv);
if (!instance) {
instance = master_add_source_instance(source,
- "hosts", "sun", time(NULL), argc, pargv);
+ "hosts", "sun", monotonic_time(NULL), argc, pargv);
if (!instance) {
error(ap->logopt, MODPREFIX
"failed to create source instance for hosts map");
diff --git a/modules/replicated.c b/modules/replicated.c
index 0f0cc51..8da1148 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -69,14 +69,14 @@ void seed_random(void)
fd = open_fd("/dev/urandom", O_RDONLY);
if (fd < 0) {
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
return;
}
if (read(fd, &seed, sizeof(seed)) != -1)
srandom(seed);
else
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
close(fd);
^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-17 4:02 ` Mount point not auto unmounted after system date/time change Ning Yu
2015-09-17 4:09 ` [PATCH v4 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
@ 2015-09-17 4:17 ` Ning Yu
2015-09-17 6:07 ` Ian Kent
2015-09-17 6:05 ` Ian Kent
2 siblings, 1 reply; 32+ messages in thread
From: Ning Yu @ 2015-09-17 4:17 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs
On Thu, Sep 17, 2015 at 12:02 PM, Ning Yu <ning.yu@canonical.com> wrote:
> On Wed, Sep 16, 2015 at 7:21 PM, Ian Kent <raven@themaw.net> wrote:
>> On Wed, 2015-09-16 at 19:02 +0800, Ning Yu wrote:
>>> On Wed, Sep 16, 2015 at 6:43 PM, Ian Kent <raven@themaw.net> wrote:
>>> > On Wed, 2015-09-16 at 18:28 +0800, Ning Yu wrote:
>>> >> On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
>>> >> > On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
>>> >> >> Hi,
>>> >> >>
>>> >> >> I have composed a patch for this issue, it works in my side, what it
>>> >> >> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
>>> >> >>
>>> >> >> Would anyone please help to review it? Thanks in advance.
>>> >> >
>>> >> > Are you joking!
>>> >> > How is this meant to apply to the current source, it won't.
>>> >> >
>>> >> > If you can manage to post a sane patch you will need to break it up into
>>> >> > a few separate standalone patches with sane explanations of what each
>>> >> > one is meant to achieve.
>>> >>
>>> >> I'm sorry, not to offend, the previous patch was huge because all the call to
>>> >> time() or gettimeofday() functions are replaced with clock_gettime().
>>> >
>>> > Encountering this after a generally unpleasant day is bound to get a
>>> > short and unpleasant response, ;)
>>> >
>>>
>>> Best wishes for you and have a nice day/night :)
>>>
>>> >>
>>> >> Please allow me to re-send the patch, this time I have splitted it into
>>> >> several smaller patches, hope it won't be as stupid as previous one.
>>> >
>>> > Well, I see those posts but there are still problems with your email
>>> > program.
>>> >
>>> > Apart from the DOS line ends all the tabs appear to have been collapsed
>>> > to single spaces.
>>> >
>>> > I really don't want to go through and apply these hunk by hunk manually
>>> > when you must have a properly formatted patch already.
>>> >
>>>
>>> Thanks for pointing it out, I will have to fix my email client issue first and
>>> resend the patches. Sorry for wasting you so much of time.
>>
>> A couple of other small things.
>>
>> Please make the title of the patch email the same as the tittle of the
>> patch. And if possible add a [PATCH x/y] prefix to the title, x being
>> the ordering of the patch within the y patches posted.
>>
>> And in patch titles I commonly use "autofs-n-v-r - actual title".
>>
>> So for example one of these would have a title like:
>> autofs-5.1.1 - Use monotonic clock instead of time()
>>
>> assuming you had made them against the 5.1.1 source.
>>
>> I've also started to use (quite recently in fact) "Signed-off-by:" in
>> patches so please add yours too, I don't feel right about adding it for
>> someone else as it's an assumption that may or may not be correct.
>>
>> These things aren't a big deal as I can change most of them myself
>> easily if it's not convenient for you to do it.
>>
>
> Thanks very much for the suggestions, I have resent the v3 patches with git
> command, by CCing myself I checked the patches just now:
> * the Signed-off-by part is added;
> * the email subject is same with the patch title;
> * and the autofs-5.1.1 prefix is added;
> * however the EOL is still \r\n, this is really weird, because I use Linux
> and vim to do the job, and the original patches are generated with
> 'git format-patch', they contains unix EOL as expected, and they are sent
> with 'git send-email', not sure why gmail convert them to dos EOL.
>
> Maybe I have to resend them as attachment.
>
Oh, the v4 patches are sent as attachment, however they still contains
dos EOL strings, please ignore them, sorry for sending so much spam.
>>>
>>> >>
>>> >> >
>>> >> >>
>>> >> >> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
>>> >> >> From: Yu Ning <ning.yu@ubuntu.com>
>>> >> >> Date: Wed, 16 Sep 2015 15:56:21 +0800
>>> >> >> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
>>> >> >>
>>> >> >> This patch is to fix the issue that a mount point may not be
>>> >> >> automatically unmounted after a system date/time change.
>>> >> >>
>>> >> >> Reproducer with 100% failrate:
>>> >> >
>>> >> > Since of you to hammer the result of the problem you've identified
>>> >> > rather than just explain the problem and what needs to be done to
>>> >> > resolve it in a polite and sensible manner.
>>> >> >
>>> >
>>> >
>>
>>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-17 4:02 ` Mount point not auto unmounted after system date/time change Ning Yu
2015-09-17 4:09 ` [PATCH v4 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-17 4:17 ` Mount point not auto unmounted after system date/time change Ning Yu
@ 2015-09-17 6:05 ` Ian Kent
2 siblings, 0 replies; 32+ messages in thread
From: Ian Kent @ 2015-09-17 6:05 UTC (permalink / raw)
To: Ning Yu; +Cc: autofs
On Thu, 2015-09-17 at 12:02 +0800, Ning Yu wrote:
> On Wed, Sep 16, 2015 at 7:21 PM, Ian Kent <raven@themaw.net> wrote:
> > On Wed, 2015-09-16 at 19:02 +0800, Ning Yu wrote:
> >> On Wed, Sep 16, 2015 at 6:43 PM, Ian Kent <raven@themaw.net> wrote:
> >> > On Wed, 2015-09-16 at 18:28 +0800, Ning Yu wrote:
> >> >> On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
> >> >> > On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
> >> >> >> Hi,
> >> >> >>
> >> >> >> I have composed a patch for this issue, it works in my side, what it
> >> >> >> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
> >> >> >>
> >> >> >> Would anyone please help to review it? Thanks in advance.
> >> >> >
> >> >> > Are you joking!
> >> >> > How is this meant to apply to the current source, it won't.
> >> >> >
> >> >> > If you can manage to post a sane patch you will need to break it up into
> >> >> > a few separate standalone patches with sane explanations of what each
> >> >> > one is meant to achieve.
> >> >>
> >> >> I'm sorry, not to offend, the previous patch was huge because all the call to
> >> >> time() or gettimeofday() functions are replaced with clock_gettime().
> >> >
> >> > Encountering this after a generally unpleasant day is bound to get a
> >> > short and unpleasant response, ;)
> >> >
> >>
> >> Best wishes for you and have a nice day/night :)
> >>
> >> >>
> >> >> Please allow me to re-send the patch, this time I have splitted it into
> >> >> several smaller patches, hope it won't be as stupid as previous one.
> >> >
> >> > Well, I see those posts but there are still problems with your email
> >> > program.
> >> >
> >> > Apart from the DOS line ends all the tabs appear to have been collapsed
> >> > to single spaces.
> >> >
> >> > I really don't want to go through and apply these hunk by hunk manually
> >> > when you must have a properly formatted patch already.
> >> >
> >>
> >> Thanks for pointing it out, I will have to fix my email client issue first and
> >> resend the patches. Sorry for wasting you so much of time.
> >
> > A couple of other small things.
> >
> > Please make the title of the patch email the same as the tittle of the
> > patch. And if possible add a [PATCH x/y] prefix to the title, x being
> > the ordering of the patch within the y patches posted.
> >
> > And in patch titles I commonly use "autofs-n-v-r - actual title".
> >
> > So for example one of these would have a title like:
> > autofs-5.1.1 - Use monotonic clock instead of time()
> >
> > assuming you had made them against the 5.1.1 source.
> >
> > I've also started to use (quite recently in fact) "Signed-off-by:" in
> > patches so please add yours too, I don't feel right about adding it for
> > someone else as it's an assumption that may or may not be correct.
> >
> > These things aren't a big deal as I can change most of them myself
> > easily if it's not convenient for you to do it.
> >
>
> Thanks very much for the suggestions, I have resent the v3 patches with git
> command, by CCing myself I checked the patches just now:
Thanks for the effort.
Even though this is mostly a straight forward change it's still quite a
bit of effort to find and make all these small changes.
> * the Signed-off-by part is added;
> * the email subject is same with the patch title;
> * and the autofs-5.1.1 prefix is added;
> * however the EOL is still \r\n, this is really weird, because I use Linux
> and vim to do the job, and the original patches are generated with
> 'git format-patch', they contains unix EOL as expected, and they are sent
> with 'git send-email', not sure why gmail convert them to dos EOL.
Yes, that's strange and I don't use a gmail account for patches so I
don't know about what that might mean.
>
> Maybe I have to resend them as attachment.
Perhaps, I'll see if they apply after dos2unix conversion, when I get to
them.
>
> >>
> >> >>
> >> >> >
> >> >> >>
> >> >> >> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
> >> >> >> From: Yu Ning <ning.yu@ubuntu.com>
> >> >> >> Date: Wed, 16 Sep 2015 15:56:21 +0800
> >> >> >> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
> >> >> >>
> >> >> >> This patch is to fix the issue that a mount point may not be
> >> >> >> automatically unmounted after a system date/time change.
> >> >> >>
> >> >> >> Reproducer with 100% failrate:
> >> >> >
> >> >> > Since of you to hammer the result of the problem you've identified
> >> >> > rather than just explain the problem and what needs to be done to
> >> >> > resolve it in a polite and sensible manner.
> >> >> >
> >> >
> >> >
> >
> >
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: Mount point not auto unmounted after system date/time change
2015-09-17 4:17 ` Mount point not auto unmounted after system date/time change Ning Yu
@ 2015-09-17 6:07 ` Ian Kent
0 siblings, 0 replies; 32+ messages in thread
From: Ian Kent @ 2015-09-17 6:07 UTC (permalink / raw)
To: Ning Yu; +Cc: autofs
On Thu, 2015-09-17 at 12:17 +0800, Ning Yu wrote:
> On Thu, Sep 17, 2015 at 12:02 PM, Ning Yu <ning.yu@canonical.com> wrote:
> > On Wed, Sep 16, 2015 at 7:21 PM, Ian Kent <raven@themaw.net> wrote:
> >> On Wed, 2015-09-16 at 19:02 +0800, Ning Yu wrote:
> >>> On Wed, Sep 16, 2015 at 6:43 PM, Ian Kent <raven@themaw.net> wrote:
> >>> > On Wed, 2015-09-16 at 18:28 +0800, Ning Yu wrote:
> >>> >> On Wed, Sep 16, 2015 at 5:16 PM, Ian Kent <raven@themaw.net> wrote:
> >>> >> > On Wed, 2015-09-16 at 16:45 +0800, Ning Yu wrote:
> >>> >> >> Hi,
> >>> >> >>
> >>> >> >> I have composed a patch for this issue, it works in my side, what it
> >>> >> >> does is replacing gettimeofday() with clock_gettime(CLOCK_MONOTONIC).
> >>> >> >>
> >>> >> >> Would anyone please help to review it? Thanks in advance.
> >>> >> >
> >>> >> > Are you joking!
> >>> >> > How is this meant to apply to the current source, it won't.
> >>> >> >
> >>> >> > If you can manage to post a sane patch you will need to break it up into
> >>> >> > a few separate standalone patches with sane explanations of what each
> >>> >> > one is meant to achieve.
> >>> >>
> >>> >> I'm sorry, not to offend, the previous patch was huge because all the call to
> >>> >> time() or gettimeofday() functions are replaced with clock_gettime().
> >>> >
> >>> > Encountering this after a generally unpleasant day is bound to get a
> >>> > short and unpleasant response, ;)
> >>> >
> >>>
> >>> Best wishes for you and have a nice day/night :)
> >>>
> >>> >>
> >>> >> Please allow me to re-send the patch, this time I have splitted it into
> >>> >> several smaller patches, hope it won't be as stupid as previous one.
> >>> >
> >>> > Well, I see those posts but there are still problems with your email
> >>> > program.
> >>> >
> >>> > Apart from the DOS line ends all the tabs appear to have been collapsed
> >>> > to single spaces.
> >>> >
> >>> > I really don't want to go through and apply these hunk by hunk manually
> >>> > when you must have a properly formatted patch already.
> >>> >
> >>>
> >>> Thanks for pointing it out, I will have to fix my email client issue first and
> >>> resend the patches. Sorry for wasting you so much of time.
> >>
> >> A couple of other small things.
> >>
> >> Please make the title of the patch email the same as the tittle of the
> >> patch. And if possible add a [PATCH x/y] prefix to the title, x being
> >> the ordering of the patch within the y patches posted.
> >>
> >> And in patch titles I commonly use "autofs-n-v-r - actual title".
> >>
> >> So for example one of these would have a title like:
> >> autofs-5.1.1 - Use monotonic clock instead of time()
> >>
> >> assuming you had made them against the 5.1.1 source.
> >>
> >> I've also started to use (quite recently in fact) "Signed-off-by:" in
> >> patches so please add yours too, I don't feel right about adding it for
> >> someone else as it's an assumption that may or may not be correct.
> >>
> >> These things aren't a big deal as I can change most of them myself
> >> easily if it's not convenient for you to do it.
> >>
> >
> > Thanks very much for the suggestions, I have resent the v3 patches with git
> > command, by CCing myself I checked the patches just now:
> > * the Signed-off-by part is added;
> > * the email subject is same with the patch title;
> > * and the autofs-5.1.1 prefix is added;
> > * however the EOL is still \r\n, this is really weird, because I use Linux
> > and vim to do the job, and the original patches are generated with
> > 'git format-patch', they contains unix EOL as expected, and they are sent
> > with 'git send-email', not sure why gmail convert them to dos EOL.
> >
> > Maybe I have to resend them as attachment.
> >
>
> Oh, the v4 patches are sent as attachment, however they still contains
> dos EOL strings, please ignore them, sorry for sending so much spam.
LOL, np, and we're might be left with a problem.
I'll see how it goes.
>
> >>>
> >>> >>
> >>> >> >
> >>> >> >>
> >>> >> >> From cdb2bcd563420cd39af199309e8c0c7fc45a7bd1 Mon Sep 17 00:00:00 2001
> >>> >> >> From: Yu Ning <ning.yu@ubuntu.com>
> >>> >> >> Date: Wed, 16 Sep 2015 15:56:21 +0800
> >>> >> >> Subject: [PATCH] Use clock_gettime() instead of gettimeofday().
> >>> >> >>
> >>> >> >> This patch is to fix the issue that a mount point may not be
> >>> >> >> automatically unmounted after a system date/time change.
> >>> >> >>
> >>> >> >> Reproducer with 100% failrate:
> >>> >> >
> >>> >> > Since of you to hammer the result of the problem you've identified
> >>> >> > rather than just explain the problem and what needs to be done to
> >>> >> > resolve it in a polite and sensible manner.
> >>> >> >
> >>> >
> >>> >
> >>
> >>
--
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^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-17 3:48 ` [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
@ 2015-09-17 6:49 ` Ian Kent
2015-09-17 7:19 ` Ning Yu
0 siblings, 1 reply; 32+ messages in thread
From: Ian Kent @ 2015-09-17 6:49 UTC (permalink / raw)
To: Yu Ning; +Cc: autofs, Yu Ning
On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
> The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
> we need to switch to use the monotic clock.
>
> Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
> ---
> lib/alarm.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/lib/alarm.c b/lib/alarm.c
> index 65a80ae..5b98b2d 100755
> --- a/lib/alarm.c
> +++ b/lib/alarm.c
> @@ -23,7 +23,7 @@ struct alarm {
> };
>
> static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
> -static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
> +static pthread_cond_t cond;
> static LIST_HEAD(alarms);
>
> #define alarm_lock() \
> @@ -212,6 +212,7 @@ int alarm_start_handler(void)
> pthread_t thid;
> pthread_attr_t attrs;
> pthread_attr_t *pattrs = &attrs;
> + pthread_condattr_t condattrs;
> int status;
>
> status = pthread_attr_init(pattrs);
> @@ -224,8 +225,18 @@ int alarm_start_handler(void)
> #endif
> }
>
> + status = pthread_condattr_init(&condattrs);
> + if (status)
> + fatal(status);
> +
> + pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
> + pthread_cond_init(&cond, &condattrs);
> +
> status = pthread_create(&thid, pattrs, alarm_handler, NULL);
>
> + pthread_condattr_destroy(&condattrs);
> + pthread_condattr_destroy(&cond);
I don't think we can do this.
The condition is used by the alarm_handler() for the duration of it's
life so I don't think we can't destroy its attributes after thread
creation.
In fact I'm not sure we even need the pthread_condattr_destroy(&cond)
but I'm not sure.
Destroying the condition attributes (condattrs) OTOH must not affect any
condition which it has been used to initialize so destroying that is
fine.
Let me have a closer look at this, maybe I've misunderstood what's going
on, and report back later.
> +
> if (pattrs)
> pthread_attr_destroy(pattrs);
>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time().
2015-09-17 3:48 ` [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
@ 2015-09-17 7:04 ` Ian Kent
2015-09-17 7:16 ` Ian Kent
0 siblings, 1 reply; 32+ messages in thread
From: Ian Kent @ 2015-09-17 7:04 UTC (permalink / raw)
To: Yu Ning; +Cc: autofs, Yu Ning
On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
> A new function monotonic_time() is introduced in automount.h as a
> monotonic version of time(), all the calls to time() have been switched
> to use this new function.
I'm also thinking we should have a slightly different patch breakup.
Let me see if I can actually apply the patches we have and if I can I'll
post a revision with the changes I'm recommending.
>
> Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
> ---
> daemon/automount.c | 4 ++--
> daemon/direct.c | 4 ++--
> daemon/indirect.c | 4 ++--
> daemon/lookup.c | 6 +++---
> daemon/state.c | 2 +-
> include/automount.h | 9 +++++++++
> lib/alarm.c | 4 ++--
> lib/cache.c | 2 +-
> lib/master.c | 4 ++--
> modules/dclist.c | 2 +-
> modules/lookup_file.c | 8 ++++----
> modules/lookup_hesiod.c | 6 +++---
> modules/lookup_hosts.c | 4 ++--
> modules/lookup_ldap.c | 10 +++++-----
> modules/lookup_nisplus.c | 10 +++++-----
> modules/lookup_program.c | 10 +++++-----
> modules/lookup_sss.c | 6 +++---
> modules/lookup_userhome.c | 2 +-
> modules/lookup_yp.c | 8 ++++----
> modules/mount_autofs.c | 2 +-
> modules/parse_amd.c | 2 +-
> modules/replicated.c | 4 ++--
> 22 files changed, 61 insertions(+), 52 deletions(-)
>
> diff --git a/daemon/automount.c b/daemon/automount.c
> index 229cb1a..a49ceee 100644
> --- a/daemon/automount.c
> +++ b/daemon/automount.c
> @@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
> break;
>
> case SIGHUP:
> - do_hup_signal(master_list, time(NULL));
> + do_hup_signal(master_list, monotonic_time(NULL));
> break;
>
> default:
> @@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
> unsigned ghost, logging, daemon_check;
> unsigned dumpmaps, foreground, have_global_options;
> time_t timeout;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> struct rlimit rlim;
> const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
> static const struct option long_options[] = {
> diff --git a/daemon/direct.c b/daemon/direct.c
> index cdd7f49..470a719 100644
> --- a/daemon/direct.c
> +++ b/daemon/direct.c
> @@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
> struct mapent_cache *nc, *mc;
> struct mapent *me, *ne, *nested;
> struct mnt_list *mnts;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
>
> if (strcmp(ap->path, "/-")) {
> error(ap->logopt, "expected direct map, exiting");
> @@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
> }
>
> /* Check if we recorded a mount fail for this key */
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> ops->send_fail(ap->logopt,
> ioctlfd, pkt->wait_queue_token, -ENOENT);
> ops->close(ap->logopt, ioctlfd);
> diff --git a/daemon/indirect.c b/daemon/indirect.c
> index 0ea9b19..b2015f9 100644
> --- a/daemon/indirect.c
> +++ b/daemon/indirect.c
> @@ -197,7 +197,7 @@ out_err:
>
> int mount_autofs_indirect(struct autofs_point *ap, const char *root)
> {
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> int status;
> int map;
>
> @@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> ops->send_fail(ap->logopt, ap->ioctlfd,
> pkt->wait_queue_token, -ENOENT);
> cache_unlock(me->mc);
> diff --git a/daemon/lookup.c b/daemon/lookup.c
> index 62071df..9a8fa7e 100644
> --- a/daemon/lookup.c
> +++ b/daemon/lookup.c
> @@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct autofs_point *ap, struct map_
> struct map_source *instance;
> char src_file[] = "file";
> char src_prog[] = "program";
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> struct stat st;
> char *type, *format;
>
> @@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct autofs_point *ap, struct map_sourc
> {
> struct map_source *instance;
> const char *format;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
>
> if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
> return lookup_amd_instance(ap, map, name, name_len);
> @@ -1079,7 +1079,7 @@ static void update_negative_cache(struct autofs_point *ap, struct map_source *so
> else
> map = entry->maps;
> if (map) {
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> int rv = CHE_FAIL;
>
> cache_writelock(map->mc);
> diff --git a/daemon/state.c b/daemon/state.c
> index 3174a9c..08828b1 100644
> --- a/daemon/state.c
> +++ b/daemon/state.c
> @@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
> pthread_t thid;
> struct readmap_args *ra;
> int status;
> - int now = time(NULL);
> + int now = monotonic_time(NULL);
>
> debug(ap->logopt, "state %d path %s", ap->state, ap->path);
>
> diff --git a/include/automount.h b/include/automount.h
> index 447aba1..7bbf859 100644
> --- a/include/automount.h
> +++ b/include/automount.h
> @@ -565,6 +565,15 @@ do { \
> fatal(_m_unlock); \
> } while(0)
>
> +static inline time_t monotonic_time(time_t *t)
> +{
> + struct timespec ts;
> + clock_gettime(CLOCK_MONOTONIC, &ts);
> + if (t)
> + *t = (time_t) ts.tv_sec;
> + return (time_t) ts.tv_sec;
> +}
> +
> /* Expire alarm handling routines */
> int alarm_start_handler(void);
> int alarm_add(struct autofs_point *ap, time_t seconds);
> diff --git a/lib/alarm.c b/lib/alarm.c
> index 5b98b2d..7563c9b 100755
> --- a/lib/alarm.c
> +++ b/lib/alarm.c
> @@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
> struct list_head *head;
> struct list_head *p;
> struct alarm *new;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t next_alarm = 0;
> unsigned int empty = 1;
> int status;
> @@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)
>
> first = list_entry(head->next, struct alarm, list);
>
> - now = time(NULL);
> + now = monotonic_time(NULL);
>
> if (first->time > now) {
> struct timespec nsecs;
> diff --git a/lib/cache.c b/lib/cache.c
> index 631d275..44e323d 100644
> --- a/lib/cache.c
> +++ b/lib/cache.c
> @@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
> struct map_source *ms, const char *key,
> time_t timeout)
> {
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> struct mapent *me;
> int rv = CHE_OK;
>
> diff --git a/lib/master.c b/lib/master.c
> index 6c38b1c..cca8371 100644
> --- a/lib/master.c
> +++ b/lib/master.c
> @@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char *type, const char *name)
> struct map_source *source;
> struct master_mapent *this;
> struct autofs_point *ap;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
>
> this = list_entry(p, struct master_mapent, list);
> p = p->next;
> @@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
> struct map_source *source;
> struct master_mapent *this;
> struct autofs_point *ap;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> unsigned int count = 0;
>
> this = list_entry(p, struct master_mapent, list);
> diff --git a/modules/dclist.c b/modules/dclist.c
> index af21ce0..4daa199 100644
> --- a/modules/dclist.c
> +++ b/modules/dclist.c
> @@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt, const char *uri)
> if (!list)
> goto out_error;
>
> - dclist->expire = time(NULL) + min_ttl;
> + dclist->expire = monotonic_time(NULL) + min_ttl;
> dclist->uri = list;
>
> return dclist;
> diff --git a/modules/lookup_file.c b/modules/lookup_file.c
> index 7c982c6..4e52fce 100644
> --- a/modules/lookup_file.c
> +++ b/modules/lookup_file.c
> @@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
> {
> char buf[MAX_ERR_BUF];
> struct mapent_cache *mc;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> char *lkp_key;
> char *prefix;
> size_t map_key_len;
> @@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
> struct mapent_cache *mc = source->mc;
> char mkey[KEY_MAX_LEN + 1];
> char mapent[MAPENT_MAX_LEN + 1];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> FILE *f;
> unsigned int k_len, m_len;
> int entry, ret;
> @@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
> struct mapent_cache *mc;
> char mkey[KEY_MAX_LEN + 1];
> char mapent[MAPENT_MAX_LEN + 1];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> FILE *f;
> unsigned int k_len, m_len;
> int entry, ret;
> @@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
> index 526f294..9da4f8e 100644
> --- a/modules/lookup_hesiod.c
> +++ b/modules/lookup_hesiod.c
> @@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
> }
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, key, best_record, time(NULL));
> + ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> hesiod_free_list(ctxt->hesiod_context, hes_result);
> @@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
> }
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
> + ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
> cache_unlock(mc);
>
> if (hes_result)
> @@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
> index 0d48356..8c4bbd9 100644
> --- a/modules/lookup_hosts.c
> +++ b/modules/lookup_hosts.c
> @@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> struct mapent *me;
> char *mapent = NULL;
> int mapent_len;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> int ret;
>
> source = ap->entry->current;
> @@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
> index 5da613e..d45e7d1 100644
> --- a/modules/lookup_ldap.c
> +++ b/modules/lookup_ldap.c
> @@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct lookup_context *ctxt)
>
> uris_mutex_lock(ctxt);
> if (ctxt->dclist) {
> - if (!ldap || ctxt->dclist->expire < time(NULL)) {
> + if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
> free_dclist(ctxt->dclist);
> ctxt->dclist = NULL;
> }
> @@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap, struct map_source *source,
> struct mapent_cache *mc;
> int rv, i, l, ql, count;
> char buf[MAX_ERR_BUF];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> char *query;
> LDAPMessage *result = NULL, *e;
> char *class, *info, *entry;
> @@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
> struct berval **bvKey;
> struct berval **bvValues;
> char buf[MAX_ERR_BUF];
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int rv, l, ql, count;
> int ret = CHE_MISSING;
>
> @@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
> unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
> struct mapent_cache *mc;
> struct mapent *me;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t t_last_read;
> int ret, cur_state;
> int status;
> @@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
> index d5eba47..17d3dde 100644
> --- a/modules/lookup_nisplus.c
> +++ b/modules/lookup_nisplus.c
> @@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
> nis_result *result;
> nis_object *this;
> char *mapent;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret, cur_state;
> char buf[MAX_ERR_BUF];
>
> @@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
> nis_result *result;
> nis_object *this;
> char *mapent;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret, cur_state;
> char buf[MAX_ERR_BUF];
>
> @@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> mapent = ENTRY_VAL(this, 1);
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
> + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
> cache_unlock(mc);
>
> nis_freeresult(result);
> @@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
> unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
> struct mapent_cache *mc;
> struct mapent *me, *exists;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t t_last_read;
> int ret = 0;
>
> @@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_program.c b/modules/lookup_program.c
> index a3a7e98..eff774b 100644
> --- a/modules/lookup_program.c
> +++ b/modules/lookup_program.c
> @@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> while (isblank(*start))
> start++;
> cache_writelock(mc);
> - ret = cache_update(mc, source, "/defaults", start, time(NULL));
> + ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> free(ment);
> @@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
> start++;
> }
> cache_writelock(mc);
> - ret = cache_update(mc, source, lkp_key, start, time(NULL));
> + ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> free(ment);
> @@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
> while (isblank(*start))
> start++;
> cache_writelock(mc);
> - ret = cache_update(mc, source, match, start, time(NULL));
> + ret = cache_update(mc, source, match, start, monotonic_time(NULL));
> cache_unlock(mc);
> if (ret == CHE_FAIL) {
> free(match);
> @@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> @@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> * proceed with the program map lookup.
> */
> if (strchr(name, '/') ||
> - me->age + ap->negative_timeout > time(NULL)) {
> + me->age + ap->negative_timeout > monotonic_time(NULL)) {
> char *ent = NULL;
>
> if (me->mapent) {
> diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
> index 528ab41..d685ccf 100644
> --- a/modules/lookup_sss.c
> +++ b/modules/lookup_sss.c
> @@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
> struct mapent_cache *mc;
> struct mapent *we;
> void *sss_ctxt = NULL;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> char buf[MAX_ERR_BUF];
> char *value = NULL;
> char *s_key;
> @@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
> struct map_source *source;
> struct mapent_cache *mc;
> struct mapent *me;
> - time_t now = time(NULL);
> + time_t now = monotonic_time(NULL);
> time_t t_last_read;
> int ret, cur_state;
>
> @@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
> index fb3caaa..d0c3e80 100644
> --- a/modules/lookup_userhome.c
> +++ b/modules/lookup_userhome.c
> @@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> }
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, name, NULL, time(NULL));
> + ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
> cache_unlock(mc);
>
> if (ret == CHE_FAIL) {
> diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
> index fcf470a..3ffa4b6 100644
> --- a/modules/lookup_yp.c
> +++ b/modules/lookup_yp.c
> @@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
> char *mapname;
> char *mapent;
> int mapent_len;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret;
>
> mc = source->mc;
> @@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
> char *mapname;
> char *mapent;
> int mapent_len;
> - time_t age = time(NULL);
> + time_t age = monotonic_time(NULL);
> int ret;
>
> mc = source->mc;
> @@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> return CHE_FAIL;
>
> cache_writelock(mc);
> - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
> + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
> cache_unlock(mc);
>
> return ret;
> @@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> /* Check if we recorded a mount fail for this key anywhere */
> me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> if (me) {
> - if (me->status >= time(NULL)) {
> + if (me->status >= monotonic_time(NULL)) {
> cache_unlock(me->mc);
> return NSS_STATUS_NOTFOUND;
> } else {
> diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
> index 4846e7f..05ea1c1 100644
> --- a/modules/mount_autofs.c
> +++ b/modules/mount_autofs.c
> @@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name,
>
> source = master_add_map_source(entry,
> info->type, info->format,
> - time(NULL), argc, argv);
> + monotonic_time(NULL), argc, argv);
> if (!source) {
> error(ap->logopt,
> MODPREFIX "failed to add map source to entry");
> diff --git a/modules/parse_amd.c b/modules/parse_amd.c
> index 899be40..6e29c6c 100644
> --- a/modules/parse_amd.c
> +++ b/modules/parse_amd.c
> @@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point *ap, const char *name,
> "hosts", "sun", argc, pargv);
> if (!instance) {
> instance = master_add_source_instance(source,
> - "hosts", "sun", time(NULL), argc, pargv);
> + "hosts", "sun", monotonic_time(NULL), argc, pargv);
> if (!instance) {
> error(ap->logopt, MODPREFIX
> "failed to create source instance for hosts map");
> diff --git a/modules/replicated.c b/modules/replicated.c
> index 0f0cc51..8da1148 100644
> --- a/modules/replicated.c
> +++ b/modules/replicated.c
> @@ -69,14 +69,14 @@ void seed_random(void)
>
> fd = open_fd("/dev/urandom", O_RDONLY);
> if (fd < 0) {
> - srandom(time(NULL));
> + srandom(monotonic_time(NULL));
> return;
> }
>
> if (read(fd, &seed, sizeof(seed)) != -1)
> srandom(seed);
> else
> - srandom(time(NULL));
> + srandom(monotonic_time(NULL));
>
> close(fd);
>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time().
2015-09-17 7:04 ` Ian Kent
@ 2015-09-17 7:16 ` Ian Kent
2015-09-17 7:34 ` Ning Yu
0 siblings, 1 reply; 32+ messages in thread
From: Ian Kent @ 2015-09-17 7:16 UTC (permalink / raw)
To: Yu Ning; +Cc: autofs, Yu Ning
On Thu, 2015-09-17 at 15:04 +0800, Ian Kent wrote:
> On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
> > A new function monotonic_time() is introduced in automount.h as a
> > monotonic version of time(), all the calls to time() have been switched
> > to use this new function.
>
> I'm also thinking we should have a slightly different patch breakup.
>
> Let me see if I can actually apply the patches we have and if I can I'll
> post a revision with the changes I'm recommending.
Using dos2unix does work in this case so I've been able to import them
to my queue using StGIT.
I'll have a go at making my recommended changes which will also give me
a chance to look closely at all the changes (even though most as
straight forward conversion to monotonic clock usage).
That's probably going to take a little while as I have other priority
work on the go.
>
> >
> > Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
> > ---
> > daemon/automount.c | 4 ++--
> > daemon/direct.c | 4 ++--
> > daemon/indirect.c | 4 ++--
> > daemon/lookup.c | 6 +++---
> > daemon/state.c | 2 +-
> > include/automount.h | 9 +++++++++
> > lib/alarm.c | 4 ++--
> > lib/cache.c | 2 +-
> > lib/master.c | 4 ++--
> > modules/dclist.c | 2 +-
> > modules/lookup_file.c | 8 ++++----
> > modules/lookup_hesiod.c | 6 +++---
> > modules/lookup_hosts.c | 4 ++--
> > modules/lookup_ldap.c | 10 +++++-----
> > modules/lookup_nisplus.c | 10 +++++-----
> > modules/lookup_program.c | 10 +++++-----
> > modules/lookup_sss.c | 6 +++---
> > modules/lookup_userhome.c | 2 +-
> > modules/lookup_yp.c | 8 ++++----
> > modules/mount_autofs.c | 2 +-
> > modules/parse_amd.c | 2 +-
> > modules/replicated.c | 4 ++--
> > 22 files changed, 61 insertions(+), 52 deletions(-)
> >
> > diff --git a/daemon/automount.c b/daemon/automount.c
> > index 229cb1a..a49ceee 100644
> > --- a/daemon/automount.c
> > +++ b/daemon/automount.c
> > @@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
> > break;
> >
> > case SIGHUP:
> > - do_hup_signal(master_list, time(NULL));
> > + do_hup_signal(master_list, monotonic_time(NULL));
> > break;
> >
> > default:
> > @@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
> > unsigned ghost, logging, daemon_check;
> > unsigned dumpmaps, foreground, have_global_options;
> > time_t timeout;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > struct rlimit rlim;
> > const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
> > static const struct option long_options[] = {
> > diff --git a/daemon/direct.c b/daemon/direct.c
> > index cdd7f49..470a719 100644
> > --- a/daemon/direct.c
> > +++ b/daemon/direct.c
> > @@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
> > struct mapent_cache *nc, *mc;
> > struct mapent *me, *ne, *nested;
> > struct mnt_list *mnts;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> >
> > if (strcmp(ap->path, "/-")) {
> > error(ap->logopt, "expected direct map, exiting");
> > @@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
> > }
> >
> > /* Check if we recorded a mount fail for this key */
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > ops->send_fail(ap->logopt,
> > ioctlfd, pkt->wait_queue_token, -ENOENT);
> > ops->close(ap->logopt, ioctlfd);
> > diff --git a/daemon/indirect.c b/daemon/indirect.c
> > index 0ea9b19..b2015f9 100644
> > --- a/daemon/indirect.c
> > +++ b/daemon/indirect.c
> > @@ -197,7 +197,7 @@ out_err:
> >
> > int mount_autofs_indirect(struct autofs_point *ap, const char *root)
> > {
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > int status;
> > int map;
> >
> > @@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > ops->send_fail(ap->logopt, ap->ioctlfd,
> > pkt->wait_queue_token, -ENOENT);
> > cache_unlock(me->mc);
> > diff --git a/daemon/lookup.c b/daemon/lookup.c
> > index 62071df..9a8fa7e 100644
> > --- a/daemon/lookup.c
> > +++ b/daemon/lookup.c
> > @@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct autofs_point *ap, struct map_
> > struct map_source *instance;
> > char src_file[] = "file";
> > char src_prog[] = "program";
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > struct stat st;
> > char *type, *format;
> >
> > @@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct autofs_point *ap, struct map_sourc
> > {
> > struct map_source *instance;
> > const char *format;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> >
> > if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
> > return lookup_amd_instance(ap, map, name, name_len);
> > @@ -1079,7 +1079,7 @@ static void update_negative_cache(struct autofs_point *ap, struct map_source *so
> > else
> > map = entry->maps;
> > if (map) {
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > int rv = CHE_FAIL;
> >
> > cache_writelock(map->mc);
> > diff --git a/daemon/state.c b/daemon/state.c
> > index 3174a9c..08828b1 100644
> > --- a/daemon/state.c
> > +++ b/daemon/state.c
> > @@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
> > pthread_t thid;
> > struct readmap_args *ra;
> > int status;
> > - int now = time(NULL);
> > + int now = monotonic_time(NULL);
> >
> > debug(ap->logopt, "state %d path %s", ap->state, ap->path);
> >
> > diff --git a/include/automount.h b/include/automount.h
> > index 447aba1..7bbf859 100644
> > --- a/include/automount.h
> > +++ b/include/automount.h
> > @@ -565,6 +565,15 @@ do { \
> > fatal(_m_unlock); \
> > } while(0)
> >
> > +static inline time_t monotonic_time(time_t *t)
> > +{
> > + struct timespec ts;
> > + clock_gettime(CLOCK_MONOTONIC, &ts);
> > + if (t)
> > + *t = (time_t) ts.tv_sec;
> > + return (time_t) ts.tv_sec;
> > +}
> > +
> > /* Expire alarm handling routines */
> > int alarm_start_handler(void);
> > int alarm_add(struct autofs_point *ap, time_t seconds);
> > diff --git a/lib/alarm.c b/lib/alarm.c
> > index 5b98b2d..7563c9b 100755
> > --- a/lib/alarm.c
> > +++ b/lib/alarm.c
> > @@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
> > struct list_head *head;
> > struct list_head *p;
> > struct alarm *new;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > time_t next_alarm = 0;
> > unsigned int empty = 1;
> > int status;
> > @@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)
> >
> > first = list_entry(head->next, struct alarm, list);
> >
> > - now = time(NULL);
> > + now = monotonic_time(NULL);
> >
> > if (first->time > now) {
> > struct timespec nsecs;
> > diff --git a/lib/cache.c b/lib/cache.c
> > index 631d275..44e323d 100644
> > --- a/lib/cache.c
> > +++ b/lib/cache.c
> > @@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
> > struct map_source *ms, const char *key,
> > time_t timeout)
> > {
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > struct mapent *me;
> > int rv = CHE_OK;
> >
> > diff --git a/lib/master.c b/lib/master.c
> > index 6c38b1c..cca8371 100644
> > --- a/lib/master.c
> > +++ b/lib/master.c
> > @@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char *type, const char *name)
> > struct map_source *source;
> > struct master_mapent *this;
> > struct autofs_point *ap;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> >
> > this = list_entry(p, struct master_mapent, list);
> > p = p->next;
> > @@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
> > struct map_source *source;
> > struct master_mapent *this;
> > struct autofs_point *ap;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > unsigned int count = 0;
> >
> > this = list_entry(p, struct master_mapent, list);
> > diff --git a/modules/dclist.c b/modules/dclist.c
> > index af21ce0..4daa199 100644
> > --- a/modules/dclist.c
> > +++ b/modules/dclist.c
> > @@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt, const char *uri)
> > if (!list)
> > goto out_error;
> >
> > - dclist->expire = time(NULL) + min_ttl;
> > + dclist->expire = monotonic_time(NULL) + min_ttl;
> > dclist->uri = list;
> >
> > return dclist;
> > diff --git a/modules/lookup_file.c b/modules/lookup_file.c
> > index 7c982c6..4e52fce 100644
> > --- a/modules/lookup_file.c
> > +++ b/modules/lookup_file.c
> > @@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
> > {
> > char buf[MAX_ERR_BUF];
> > struct mapent_cache *mc;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > char *lkp_key;
> > char *prefix;
> > size_t map_key_len;
> > @@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
> > struct mapent_cache *mc = source->mc;
> > char mkey[KEY_MAX_LEN + 1];
> > char mapent[MAPENT_MAX_LEN + 1];
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > FILE *f;
> > unsigned int k_len, m_len;
> > int entry, ret;
> > @@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
> > struct mapent_cache *mc;
> > char mkey[KEY_MAX_LEN + 1];
> > char mapent[MAPENT_MAX_LEN + 1];
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > FILE *f;
> > unsigned int k_len, m_len;
> > int entry, ret;
> > @@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
> > index 526f294..9da4f8e 100644
> > --- a/modules/lookup_hesiod.c
> > +++ b/modules/lookup_hesiod.c
> > @@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
> > }
> >
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, key, best_record, time(NULL));
> > + ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
> > cache_unlock(mc);
> > if (ret == CHE_FAIL) {
> > hesiod_free_list(ctxt->hesiod_context, hes_result);
> > @@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
> > }
> >
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
> > + ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
> > cache_unlock(mc);
> >
> > if (hes_result)
> > @@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
> > index 0d48356..8c4bbd9 100644
> > --- a/modules/lookup_hosts.c
> > +++ b/modules/lookup_hosts.c
> > @@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > struct mapent *me;
> > char *mapent = NULL;
> > int mapent_len;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > int ret;
> >
> > source = ap->entry->current;
> > @@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
> > index 5da613e..d45e7d1 100644
> > --- a/modules/lookup_ldap.c
> > +++ b/modules/lookup_ldap.c
> > @@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct lookup_context *ctxt)
> >
> > uris_mutex_lock(ctxt);
> > if (ctxt->dclist) {
> > - if (!ldap || ctxt->dclist->expire < time(NULL)) {
> > + if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
> > free_dclist(ctxt->dclist);
> > ctxt->dclist = NULL;
> > }
> > @@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap, struct map_source *source,
> > struct mapent_cache *mc;
> > int rv, i, l, ql, count;
> > char buf[MAX_ERR_BUF];
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > char *query;
> > LDAPMessage *result = NULL, *e;
> > char *class, *info, *entry;
> > @@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
> > struct berval **bvKey;
> > struct berval **bvValues;
> > char buf[MAX_ERR_BUF];
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > int rv, l, ql, count;
> > int ret = CHE_MISSING;
> >
> > @@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
> > unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
> > struct mapent_cache *mc;
> > struct mapent *me;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > time_t t_last_read;
> > int ret, cur_state;
> > int status;
> > @@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
> > index d5eba47..17d3dde 100644
> > --- a/modules/lookup_nisplus.c
> > +++ b/modules/lookup_nisplus.c
> > @@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
> > nis_result *result;
> > nis_object *this;
> > char *mapent;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > int ret, cur_state;
> > char buf[MAX_ERR_BUF];
> >
> > @@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
> > nis_result *result;
> > nis_object *this;
> > char *mapent;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > int ret, cur_state;
> > char buf[MAX_ERR_BUF];
> >
> > @@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> > mapent = ENTRY_VAL(this, 1);
> >
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
> > + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
> > cache_unlock(mc);
> >
> > nis_freeresult(result);
> > @@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
> > unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
> > struct mapent_cache *mc;
> > struct mapent *me, *exists;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > time_t t_last_read;
> > int ret = 0;
> >
> > @@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > diff --git a/modules/lookup_program.c b/modules/lookup_program.c
> > index a3a7e98..eff774b 100644
> > --- a/modules/lookup_program.c
> > +++ b/modules/lookup_program.c
> > @@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> > while (isblank(*start))
> > start++;
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, "/defaults", start, time(NULL));
> > + ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
> > cache_unlock(mc);
> > if (ret == CHE_FAIL) {
> > free(ment);
> > @@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
> > start++;
> > }
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, lkp_key, start, time(NULL));
> > + ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
> > cache_unlock(mc);
> > if (ret == CHE_FAIL) {
> > free(ment);
> > @@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
> > while (isblank(*start))
> > start++;
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, match, start, time(NULL));
> > + ret = cache_update(mc, source, match, start, monotonic_time(NULL));
> > cache_unlock(mc);
> > if (ret == CHE_FAIL) {
> > free(match);
> > @@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, name, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > @@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > * proceed with the program map lookup.
> > */
> > if (strchr(name, '/') ||
> > - me->age + ap->negative_timeout > time(NULL)) {
> > + me->age + ap->negative_timeout > monotonic_time(NULL)) {
> > char *ent = NULL;
> >
> > if (me->mapent) {
> > diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
> > index 528ab41..d685ccf 100644
> > --- a/modules/lookup_sss.c
> > +++ b/modules/lookup_sss.c
> > @@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
> > struct mapent_cache *mc;
> > struct mapent *we;
> > void *sss_ctxt = NULL;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > char buf[MAX_ERR_BUF];
> > char *value = NULL;
> > char *s_key;
> > @@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
> > struct map_source *source;
> > struct mapent_cache *mc;
> > struct mapent *me;
> > - time_t now = time(NULL);
> > + time_t now = monotonic_time(NULL);
> > time_t t_last_read;
> > int ret, cur_state;
> >
> > @@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
> > index fb3caaa..d0c3e80 100644
> > --- a/modules/lookup_userhome.c
> > +++ b/modules/lookup_userhome.c
> > @@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > }
> >
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, name, NULL, time(NULL));
> > + ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
> > cache_unlock(mc);
> >
> > if (ret == CHE_FAIL) {
> > diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
> > index fcf470a..3ffa4b6 100644
> > --- a/modules/lookup_yp.c
> > +++ b/modules/lookup_yp.c
> > @@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
> > char *mapname;
> > char *mapent;
> > int mapent_len;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > int ret;
> >
> > mc = source->mc;
> > @@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
> > char *mapname;
> > char *mapent;
> > int mapent_len;
> > - time_t age = time(NULL);
> > + time_t age = monotonic_time(NULL);
> > int ret;
> >
> > mc = source->mc;
> > @@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
> > return CHE_FAIL;
> >
> > cache_writelock(mc);
> > - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
> > + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
> > cache_unlock(mc);
> >
> > return ret;
> > @@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
> > /* Check if we recorded a mount fail for this key anywhere */
> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
> > if (me) {
> > - if (me->status >= time(NULL)) {
> > + if (me->status >= monotonic_time(NULL)) {
> > cache_unlock(me->mc);
> > return NSS_STATUS_NOTFOUND;
> > } else {
> > diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
> > index 4846e7f..05ea1c1 100644
> > --- a/modules/mount_autofs.c
> > +++ b/modules/mount_autofs.c
> > @@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name,
> >
> > source = master_add_map_source(entry,
> > info->type, info->format,
> > - time(NULL), argc, argv);
> > + monotonic_time(NULL), argc, argv);
> > if (!source) {
> > error(ap->logopt,
> > MODPREFIX "failed to add map source to entry");
> > diff --git a/modules/parse_amd.c b/modules/parse_amd.c
> > index 899be40..6e29c6c 100644
> > --- a/modules/parse_amd.c
> > +++ b/modules/parse_amd.c
> > @@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point *ap, const char *name,
> > "hosts", "sun", argc, pargv);
> > if (!instance) {
> > instance = master_add_source_instance(source,
> > - "hosts", "sun", time(NULL), argc, pargv);
> > + "hosts", "sun", monotonic_time(NULL), argc, pargv);
> > if (!instance) {
> > error(ap->logopt, MODPREFIX
> > "failed to create source instance for hosts map");
> > diff --git a/modules/replicated.c b/modules/replicated.c
> > index 0f0cc51..8da1148 100644
> > --- a/modules/replicated.c
> > +++ b/modules/replicated.c
> > @@ -69,14 +69,14 @@ void seed_random(void)
> >
> > fd = open_fd("/dev/urandom", O_RDONLY);
> > if (fd < 0) {
> > - srandom(time(NULL));
> > + srandom(monotonic_time(NULL));
> > return;
> > }
> >
> > if (read(fd, &seed, sizeof(seed)) != -1)
> > srandom(seed);
> > else
> > - srandom(time(NULL));
> > + srandom(monotonic_time(NULL));
> >
> > close(fd);
> >
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe autofs" in
--
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^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-17 6:49 ` Ian Kent
@ 2015-09-17 7:19 ` Ning Yu
2015-09-17 8:39 ` Ian Kent
0 siblings, 1 reply; 32+ messages in thread
From: Ning Yu @ 2015-09-17 7:19 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
On Thu, Sep 17, 2015 at 2:49 PM, Ian Kent <raven@themaw.net> wrote:
> On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
>> The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
>> we need to switch to use the monotic clock.
>>
>> Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
>> ---
>> lib/alarm.c | 13 ++++++++++++-
>> 1 file changed, 12 insertions(+), 1 deletion(-)
>>
>> diff --git a/lib/alarm.c b/lib/alarm.c
>> index 65a80ae..5b98b2d 100755
>> --- a/lib/alarm.c
>> +++ b/lib/alarm.c
>> @@ -23,7 +23,7 @@ struct alarm {
>> };
>>
>> static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
>> -static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
>> +static pthread_cond_t cond;
>> static LIST_HEAD(alarms);
>>
>> #define alarm_lock() \
>> @@ -212,6 +212,7 @@ int alarm_start_handler(void)
>> pthread_t thid;
>> pthread_attr_t attrs;
>> pthread_attr_t *pattrs = &attrs;
>> + pthread_condattr_t condattrs;
>> int status;
>>
>> status = pthread_attr_init(pattrs);
>> @@ -224,8 +225,18 @@ int alarm_start_handler(void)
>> #endif
>> }
>>
>> + status = pthread_condattr_init(&condattrs);
>> + if (status)
>> + fatal(status);
>> +
>> + pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
>> + pthread_cond_init(&cond, &condattrs);
>> +
>> status = pthread_create(&thid, pattrs, alarm_handler, NULL);
>>
>> + pthread_condattr_destroy(&condattrs);
>> + pthread_condattr_destroy(&cond);
>
> I don't think we can do this.
>
> The condition is used by the alarm_handler() for the duration of it's
> life so I don't think we can't destroy its attributes after thread
> creation.
>
> In fact I'm not sure we even need the pthread_condattr_destroy(&cond)
> but I'm not sure.
>
> Destroying the condition attributes (condattrs) OTOH must not affect any
> condition which it has been used to initialize so destroying that is
> fine.
>
> Let me have a closer look at this, maybe I've misunderstood what's going
> on, and report back later.
>
I think you are right, we shouldn't destroy the cond attrs, nor the cond
(and I used wrong function to destroy cond...) if the thread is successfully
created.
In fact I think we should do the cleanup at the end of the thread, however
since the thread is expected to live __forever__, maybe we can simply ignore
the cleanup.
>> +
>> if (pattrs)
>> pthread_attr_destroy(pattrs);
>>
>
>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time().
2015-09-17 7:16 ` Ian Kent
@ 2015-09-17 7:34 ` Ning Yu
0 siblings, 0 replies; 32+ messages in thread
From: Ning Yu @ 2015-09-17 7:34 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
On Thu, Sep 17, 2015 at 3:16 PM, Ian Kent <raven@themaw.net> wrote:
> On Thu, 2015-09-17 at 15:04 +0800, Ian Kent wrote:
>> On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
>> > A new function monotonic_time() is introduced in automount.h as a
>> > monotonic version of time(), all the calls to time() have been switched
>> > to use this new function.
>>
>> I'm also thinking we should have a slightly different patch breakup.
>>
>> Let me see if I can actually apply the patches we have and if I can I'll
>> post a revision with the changes I'm recommending.
>
> Using dos2unix does work in this case so I've been able to import them
> to my queue using StGIT.
>
> I'll have a go at making my recommended changes which will also give me
> a chance to look closely at all the changes (even though most as
> straight forward conversion to monotonic clock usage).
>
> That's probably going to take a little while as I have other priority
> work on the go.
>
Thank you so much, please let me know if anything can be done by me,
it's my pleasure.
>>
>> >
>> > Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
>> > ---
>> > daemon/automount.c | 4 ++--
>> > daemon/direct.c | 4 ++--
>> > daemon/indirect.c | 4 ++--
>> > daemon/lookup.c | 6 +++---
>> > daemon/state.c | 2 +-
>> > include/automount.h | 9 +++++++++
>> > lib/alarm.c | 4 ++--
>> > lib/cache.c | 2 +-
>> > lib/master.c | 4 ++--
>> > modules/dclist.c | 2 +-
>> > modules/lookup_file.c | 8 ++++----
>> > modules/lookup_hesiod.c | 6 +++---
>> > modules/lookup_hosts.c | 4 ++--
>> > modules/lookup_ldap.c | 10 +++++-----
>> > modules/lookup_nisplus.c | 10 +++++-----
>> > modules/lookup_program.c | 10 +++++-----
>> > modules/lookup_sss.c | 6 +++---
>> > modules/lookup_userhome.c | 2 +-
>> > modules/lookup_yp.c | 8 ++++----
>> > modules/mount_autofs.c | 2 +-
>> > modules/parse_amd.c | 2 +-
>> > modules/replicated.c | 4 ++--
>> > 22 files changed, 61 insertions(+), 52 deletions(-)
>> >
>> > diff --git a/daemon/automount.c b/daemon/automount.c
>> > index 229cb1a..a49ceee 100644
>> > --- a/daemon/automount.c
>> > +++ b/daemon/automount.c
>> > @@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
>> > break;
>> >
>> > case SIGHUP:
>> > - do_hup_signal(master_list, time(NULL));
>> > + do_hup_signal(master_list, monotonic_time(NULL));
>> > break;
>> >
>> > default:
>> > @@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
>> > unsigned ghost, logging, daemon_check;
>> > unsigned dumpmaps, foreground, have_global_options;
>> > time_t timeout;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > struct rlimit rlim;
>> > const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
>> > static const struct option long_options[] = {
>> > diff --git a/daemon/direct.c b/daemon/direct.c
>> > index cdd7f49..470a719 100644
>> > --- a/daemon/direct.c
>> > +++ b/daemon/direct.c
>> > @@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
>> > struct mapent_cache *nc, *mc;
>> > struct mapent *me, *ne, *nested;
>> > struct mnt_list *mnts;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> >
>> > if (strcmp(ap->path, "/-")) {
>> > error(ap->logopt, "expected direct map, exiting");
>> > @@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
>> > }
>> >
>> > /* Check if we recorded a mount fail for this key */
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > ops->send_fail(ap->logopt,
>> > ioctlfd, pkt->wait_queue_token, -ENOENT);
>> > ops->close(ap->logopt, ioctlfd);
>> > diff --git a/daemon/indirect.c b/daemon/indirect.c
>> > index 0ea9b19..b2015f9 100644
>> > --- a/daemon/indirect.c
>> > +++ b/daemon/indirect.c
>> > @@ -197,7 +197,7 @@ out_err:
>> >
>> > int mount_autofs_indirect(struct autofs_point *ap, const char *root)
>> > {
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > int status;
>> > int map;
>> >
>> > @@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > ops->send_fail(ap->logopt, ap->ioctlfd,
>> > pkt->wait_queue_token, -ENOENT);
>> > cache_unlock(me->mc);
>> > diff --git a/daemon/lookup.c b/daemon/lookup.c
>> > index 62071df..9a8fa7e 100644
>> > --- a/daemon/lookup.c
>> > +++ b/daemon/lookup.c
>> > @@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct autofs_point *ap, struct map_
>> > struct map_source *instance;
>> > char src_file[] = "file";
>> > char src_prog[] = "program";
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > struct stat st;
>> > char *type, *format;
>> >
>> > @@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct autofs_point *ap, struct map_sourc
>> > {
>> > struct map_source *instance;
>> > const char *format;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> >
>> > if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
>> > return lookup_amd_instance(ap, map, name, name_len);
>> > @@ -1079,7 +1079,7 @@ static void update_negative_cache(struct autofs_point *ap, struct map_source *so
>> > else
>> > map = entry->maps;
>> > if (map) {
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > int rv = CHE_FAIL;
>> >
>> > cache_writelock(map->mc);
>> > diff --git a/daemon/state.c b/daemon/state.c
>> > index 3174a9c..08828b1 100644
>> > --- a/daemon/state.c
>> > +++ b/daemon/state.c
>> > @@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
>> > pthread_t thid;
>> > struct readmap_args *ra;
>> > int status;
>> > - int now = time(NULL);
>> > + int now = monotonic_time(NULL);
>> >
>> > debug(ap->logopt, "state %d path %s", ap->state, ap->path);
>> >
>> > diff --git a/include/automount.h b/include/automount.h
>> > index 447aba1..7bbf859 100644
>> > --- a/include/automount.h
>> > +++ b/include/automount.h
>> > @@ -565,6 +565,15 @@ do { \
>> > fatal(_m_unlock); \
>> > } while(0)
>> >
>> > +static inline time_t monotonic_time(time_t *t)
>> > +{
>> > + struct timespec ts;
>> > + clock_gettime(CLOCK_MONOTONIC, &ts);
>> > + if (t)
>> > + *t = (time_t) ts.tv_sec;
>> > + return (time_t) ts.tv_sec;
>> > +}
>> > +
>> > /* Expire alarm handling routines */
>> > int alarm_start_handler(void);
>> > int alarm_add(struct autofs_point *ap, time_t seconds);
>> > diff --git a/lib/alarm.c b/lib/alarm.c
>> > index 5b98b2d..7563c9b 100755
>> > --- a/lib/alarm.c
>> > +++ b/lib/alarm.c
>> > @@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
>> > struct list_head *head;
>> > struct list_head *p;
>> > struct alarm *new;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > time_t next_alarm = 0;
>> > unsigned int empty = 1;
>> > int status;
>> > @@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)
>> >
>> > first = list_entry(head->next, struct alarm, list);
>> >
>> > - now = time(NULL);
>> > + now = monotonic_time(NULL);
>> >
>> > if (first->time > now) {
>> > struct timespec nsecs;
>> > diff --git a/lib/cache.c b/lib/cache.c
>> > index 631d275..44e323d 100644
>> > --- a/lib/cache.c
>> > +++ b/lib/cache.c
>> > @@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
>> > struct map_source *ms, const char *key,
>> > time_t timeout)
>> > {
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > struct mapent *me;
>> > int rv = CHE_OK;
>> >
>> > diff --git a/lib/master.c b/lib/master.c
>> > index 6c38b1c..cca8371 100644
>> > --- a/lib/master.c
>> > +++ b/lib/master.c
>> > @@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char *type, const char *name)
>> > struct map_source *source;
>> > struct master_mapent *this;
>> > struct autofs_point *ap;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> >
>> > this = list_entry(p, struct master_mapent, list);
>> > p = p->next;
>> > @@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
>> > struct map_source *source;
>> > struct master_mapent *this;
>> > struct autofs_point *ap;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > unsigned int count = 0;
>> >
>> > this = list_entry(p, struct master_mapent, list);
>> > diff --git a/modules/dclist.c b/modules/dclist.c
>> > index af21ce0..4daa199 100644
>> > --- a/modules/dclist.c
>> > +++ b/modules/dclist.c
>> > @@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt, const char *uri)
>> > if (!list)
>> > goto out_error;
>> >
>> > - dclist->expire = time(NULL) + min_ttl;
>> > + dclist->expire = monotonic_time(NULL) + min_ttl;
>> > dclist->uri = list;
>> >
>> > return dclist;
>> > diff --git a/modules/lookup_file.c b/modules/lookup_file.c
>> > index 7c982c6..4e52fce 100644
>> > --- a/modules/lookup_file.c
>> > +++ b/modules/lookup_file.c
>> > @@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
>> > {
>> > char buf[MAX_ERR_BUF];
>> > struct mapent_cache *mc;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > char *lkp_key;
>> > char *prefix;
>> > size_t map_key_len;
>> > @@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
>> > struct mapent_cache *mc = source->mc;
>> > char mkey[KEY_MAX_LEN + 1];
>> > char mapent[MAPENT_MAX_LEN + 1];
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > FILE *f;
>> > unsigned int k_len, m_len;
>> > int entry, ret;
>> > @@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
>> > struct mapent_cache *mc;
>> > char mkey[KEY_MAX_LEN + 1];
>> > char mapent[MAPENT_MAX_LEN + 1];
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > FILE *f;
>> > unsigned int k_len, m_len;
>> > int entry, ret;
>> > @@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
>> > index 526f294..9da4f8e 100644
>> > --- a/modules/lookup_hesiod.c
>> > +++ b/modules/lookup_hesiod.c
>> > @@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
>> > }
>> >
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, key, best_record, time(NULL));
>> > + ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
>> > cache_unlock(mc);
>> > if (ret == CHE_FAIL) {
>> > hesiod_free_list(ctxt->hesiod_context, hes_result);
>> > @@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
>> > }
>> >
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
>> > + ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
>> > cache_unlock(mc);
>> >
>> > if (hes_result)
>> > @@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, name, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
>> > index 0d48356..8c4bbd9 100644
>> > --- a/modules/lookup_hosts.c
>> > +++ b/modules/lookup_hosts.c
>> > @@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > struct mapent *me;
>> > char *mapent = NULL;
>> > int mapent_len;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > int ret;
>> >
>> > source = ap->entry->current;
>> > @@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, name, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
>> > index 5da613e..d45e7d1 100644
>> > --- a/modules/lookup_ldap.c
>> > +++ b/modules/lookup_ldap.c
>> > @@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct lookup_context *ctxt)
>> >
>> > uris_mutex_lock(ctxt);
>> > if (ctxt->dclist) {
>> > - if (!ldap || ctxt->dclist->expire < time(NULL)) {
>> > + if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
>> > free_dclist(ctxt->dclist);
>> > ctxt->dclist = NULL;
>> > }
>> > @@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap, struct map_source *source,
>> > struct mapent_cache *mc;
>> > int rv, i, l, ql, count;
>> > char buf[MAX_ERR_BUF];
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > char *query;
>> > LDAPMessage *result = NULL, *e;
>> > char *class, *info, *entry;
>> > @@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
>> > struct berval **bvKey;
>> > struct berval **bvValues;
>> > char buf[MAX_ERR_BUF];
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > int rv, l, ql, count;
>> > int ret = CHE_MISSING;
>> >
>> > @@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
>> > unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
>> > struct mapent_cache *mc;
>> > struct mapent *me;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > time_t t_last_read;
>> > int ret, cur_state;
>> > int status;
>> > @@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
>> > index d5eba47..17d3dde 100644
>> > --- a/modules/lookup_nisplus.c
>> > +++ b/modules/lookup_nisplus.c
>> > @@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
>> > nis_result *result;
>> > nis_object *this;
>> > char *mapent;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > int ret, cur_state;
>> > char buf[MAX_ERR_BUF];
>> >
>> > @@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
>> > nis_result *result;
>> > nis_object *this;
>> > char *mapent;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > int ret, cur_state;
>> > char buf[MAX_ERR_BUF];
>> >
>> > @@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
>> > mapent = ENTRY_VAL(this, 1);
>> >
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
>> > + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
>> > cache_unlock(mc);
>> >
>> > nis_freeresult(result);
>> > @@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
>> > unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
>> > struct mapent_cache *mc;
>> > struct mapent *me, *exists;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > time_t t_last_read;
>> > int ret = 0;
>> >
>> > @@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > diff --git a/modules/lookup_program.c b/modules/lookup_program.c
>> > index a3a7e98..eff774b 100644
>> > --- a/modules/lookup_program.c
>> > +++ b/modules/lookup_program.c
>> > @@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
>> > while (isblank(*start))
>> > start++;
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, "/defaults", start, time(NULL));
>> > + ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
>> > cache_unlock(mc);
>> > if (ret == CHE_FAIL) {
>> > free(ment);
>> > @@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
>> > start++;
>> > }
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, lkp_key, start, time(NULL));
>> > + ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
>> > cache_unlock(mc);
>> > if (ret == CHE_FAIL) {
>> > free(ment);
>> > @@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
>> > while (isblank(*start))
>> > start++;
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, match, start, time(NULL));
>> > + ret = cache_update(mc, source, match, start, monotonic_time(NULL));
>> > cache_unlock(mc);
>> > if (ret == CHE_FAIL) {
>> > free(match);
>> > @@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, name, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > @@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > * proceed with the program map lookup.
>> > */
>> > if (strchr(name, '/') ||
>> > - me->age + ap->negative_timeout > time(NULL)) {
>> > + me->age + ap->negative_timeout > monotonic_time(NULL)) {
>> > char *ent = NULL;
>> >
>> > if (me->mapent) {
>> > diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
>> > index 528ab41..d685ccf 100644
>> > --- a/modules/lookup_sss.c
>> > +++ b/modules/lookup_sss.c
>> > @@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
>> > struct mapent_cache *mc;
>> > struct mapent *we;
>> > void *sss_ctxt = NULL;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > char buf[MAX_ERR_BUF];
>> > char *value = NULL;
>> > char *s_key;
>> > @@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
>> > struct map_source *source;
>> > struct mapent_cache *mc;
>> > struct mapent *me;
>> > - time_t now = time(NULL);
>> > + time_t now = monotonic_time(NULL);
>> > time_t t_last_read;
>> > int ret, cur_state;
>> >
>> > @@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
>> > index fb3caaa..d0c3e80 100644
>> > --- a/modules/lookup_userhome.c
>> > +++ b/modules/lookup_userhome.c
>> > @@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > }
>> >
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, name, NULL, time(NULL));
>> > + ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
>> > cache_unlock(mc);
>> >
>> > if (ret == CHE_FAIL) {
>> > diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
>> > index fcf470a..3ffa4b6 100644
>> > --- a/modules/lookup_yp.c
>> > +++ b/modules/lookup_yp.c
>> > @@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
>> > char *mapname;
>> > char *mapent;
>> > int mapent_len;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > int ret;
>> >
>> > mc = source->mc;
>> > @@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
>> > char *mapname;
>> > char *mapent;
>> > int mapent_len;
>> > - time_t age = time(NULL);
>> > + time_t age = monotonic_time(NULL);
>> > int ret;
>> >
>> > mc = source->mc;
>> > @@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
>> > return CHE_FAIL;
>> >
>> > cache_writelock(mc);
>> > - ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
>> > + ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
>> > cache_unlock(mc);
>> >
>> > return ret;
>> > @@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
>> > /* Check if we recorded a mount fail for this key anywhere */
>> > me = lookup_source_mapent(ap, key, LKP_DISTINCT);
>> > if (me) {
>> > - if (me->status >= time(NULL)) {
>> > + if (me->status >= monotonic_time(NULL)) {
>> > cache_unlock(me->mc);
>> > return NSS_STATUS_NOTFOUND;
>> > } else {
>> > diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
>> > index 4846e7f..05ea1c1 100644
>> > --- a/modules/mount_autofs.c
>> > +++ b/modules/mount_autofs.c
>> > @@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name,
>> >
>> > source = master_add_map_source(entry,
>> > info->type, info->format,
>> > - time(NULL), argc, argv);
>> > + monotonic_time(NULL), argc, argv);
>> > if (!source) {
>> > error(ap->logopt,
>> > MODPREFIX "failed to add map source to entry");
>> > diff --git a/modules/parse_amd.c b/modules/parse_amd.c
>> > index 899be40..6e29c6c 100644
>> > --- a/modules/parse_amd.c
>> > +++ b/modules/parse_amd.c
>> > @@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point *ap, const char *name,
>> > "hosts", "sun", argc, pargv);
>> > if (!instance) {
>> > instance = master_add_source_instance(source,
>> > - "hosts", "sun", time(NULL), argc, pargv);
>> > + "hosts", "sun", monotonic_time(NULL), argc, pargv);
>> > if (!instance) {
>> > error(ap->logopt, MODPREFIX
>> > "failed to create source instance for hosts map");
>> > diff --git a/modules/replicated.c b/modules/replicated.c
>> > index 0f0cc51..8da1148 100644
>> > --- a/modules/replicated.c
>> > +++ b/modules/replicated.c
>> > @@ -69,14 +69,14 @@ void seed_random(void)
>> >
>> > fd = open_fd("/dev/urandom", O_RDONLY);
>> > if (fd < 0) {
>> > - srandom(time(NULL));
>> > + srandom(monotonic_time(NULL));
>> > return;
>> > }
>> >
>> > if (read(fd, &seed, sizeof(seed)) != -1)
>> > srandom(seed);
>> > else
>> > - srandom(time(NULL));
>> > + srandom(monotonic_time(NULL));
>> >
>> > close(fd);
>> >
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe autofs" in
>
>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-17 7:19 ` Ning Yu
@ 2015-09-17 8:39 ` Ian Kent
2015-09-17 9:12 ` Ning Yu
0 siblings, 1 reply; 32+ messages in thread
From: Ian Kent @ 2015-09-17 8:39 UTC (permalink / raw)
To: Ning Yu; +Cc: autofs, Yu Ning
On Thu, 2015-09-17 at 15:19 +0800, Ning Yu wrote:
> On Thu, Sep 17, 2015 at 2:49 PM, Ian Kent <raven@themaw.net> wrote:
> > On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
> >> The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
> >> we need to switch to use the monotic clock.
> >>
> >> Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
> >> ---
> >> lib/alarm.c | 13 ++++++++++++-
> >> 1 file changed, 12 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/lib/alarm.c b/lib/alarm.c
> >> index 65a80ae..5b98b2d 100755
> >> --- a/lib/alarm.c
> >> +++ b/lib/alarm.c
> >> @@ -23,7 +23,7 @@ struct alarm {
> >> };
> >>
> >> static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
> >> -static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
> >> +static pthread_cond_t cond;
> >> static LIST_HEAD(alarms);
> >>
> >> #define alarm_lock() \
> >> @@ -212,6 +212,7 @@ int alarm_start_handler(void)
> >> pthread_t thid;
> >> pthread_attr_t attrs;
> >> pthread_attr_t *pattrs = &attrs;
> >> + pthread_condattr_t condattrs;
> >> int status;
> >>
> >> status = pthread_attr_init(pattrs);
> >> @@ -224,8 +225,18 @@ int alarm_start_handler(void)
> >> #endif
> >> }
> >>
> >> + status = pthread_condattr_init(&condattrs);
> >> + if (status)
> >> + fatal(status);
> >> +
> >> + pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
> >> + pthread_cond_init(&cond, &condattrs);
> >> +
> >> status = pthread_create(&thid, pattrs, alarm_handler, NULL);
> >>
> >> + pthread_condattr_destroy(&condattrs);
> >> + pthread_condattr_destroy(&cond);
> >
> > I don't think we can do this.
> >
> > The condition is used by the alarm_handler() for the duration of it's
> > life so I don't think we can't destroy its attributes after thread
> > creation.
> >
> > In fact I'm not sure we even need the pthread_condattr_destroy(&cond)
> > but I'm not sure.
> >
> > Destroying the condition attributes (condattrs) OTOH must not affect any
> > condition which it has been used to initialize so destroying that is
> > fine.
> >
> > Let me have a closer look at this, maybe I've misunderstood what's going
> > on, and report back later.
> >
>
> I think you are right, we shouldn't destroy the cond attrs, nor the cond
> (and I used wrong function to destroy cond...) if the thread is successfully
> created.
>
> In fact I think we should do the cleanup at the end of the thread, however
> since the thread is expected to live __forever__, maybe we can simply ignore
> the cleanup.
That's what I'm thinking too.
I don't think there is any problem assuming the monotonic clock is
available (I think it's been around a very long time) so there's no
point in complicating things to cater for that case.
Although I am thinking of checking the return and calling the fatal()
function on failure as I do for other pthreads functions that should
never fail, so if it does fail we'll get a simple message and a core so
we know where to look.
>
> >> +
> >> if (pattrs)
> >> pthread_attr_destroy(pattrs);
> >>
> >
> >
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-17 8:39 ` Ian Kent
@ 2015-09-17 9:12 ` Ning Yu
2015-09-18 1:36 ` Ian Kent
0 siblings, 1 reply; 32+ messages in thread
From: Ning Yu @ 2015-09-17 9:12 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
On Thu, Sep 17, 2015 at 4:39 PM, Ian Kent <raven@themaw.net> wrote:
> On Thu, 2015-09-17 at 15:19 +0800, Ning Yu wrote:
>> On Thu, Sep 17, 2015 at 2:49 PM, Ian Kent <raven@themaw.net> wrote:
>> > On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
>> >> The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
>> >> we need to switch to use the monotic clock.
>> >>
>> >> Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
>> >> ---
>> >> lib/alarm.c | 13 ++++++++++++-
>> >> 1 file changed, 12 insertions(+), 1 deletion(-)
>> >>
>> >> diff --git a/lib/alarm.c b/lib/alarm.c
>> >> index 65a80ae..5b98b2d 100755
>> >> --- a/lib/alarm.c
>> >> +++ b/lib/alarm.c
>> >> @@ -23,7 +23,7 @@ struct alarm {
>> >> };
>> >>
>> >> static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
>> >> -static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
>> >> +static pthread_cond_t cond;
>> >> static LIST_HEAD(alarms);
>> >>
>> >> #define alarm_lock() \
>> >> @@ -212,6 +212,7 @@ int alarm_start_handler(void)
>> >> pthread_t thid;
>> >> pthread_attr_t attrs;
>> >> pthread_attr_t *pattrs = &attrs;
>> >> + pthread_condattr_t condattrs;
>> >> int status;
>> >>
>> >> status = pthread_attr_init(pattrs);
>> >> @@ -224,8 +225,18 @@ int alarm_start_handler(void)
>> >> #endif
>> >> }
>> >>
>> >> + status = pthread_condattr_init(&condattrs);
>> >> + if (status)
>> >> + fatal(status);
>> >> +
>> >> + pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
>> >> + pthread_cond_init(&cond, &condattrs);
>> >> +
>> >> status = pthread_create(&thid, pattrs, alarm_handler, NULL);
>> >>
>> >> + pthread_condattr_destroy(&condattrs);
>> >> + pthread_condattr_destroy(&cond);
>> >
>> > I don't think we can do this.
>> >
>> > The condition is used by the alarm_handler() for the duration of it's
>> > life so I don't think we can't destroy its attributes after thread
>> > creation.
>> >
>> > In fact I'm not sure we even need the pthread_condattr_destroy(&cond)
>> > but I'm not sure.
>> >
>> > Destroying the condition attributes (condattrs) OTOH must not affect any
>> > condition which it has been used to initialize so destroying that is
>> > fine.
>> >
>> > Let me have a closer look at this, maybe I've misunderstood what's going
>> > on, and report back later.
>> >
>>
>> I think you are right, we shouldn't destroy the cond attrs, nor the cond
>> (and I used wrong function to destroy cond...) if the thread is successfully
>> created.
>>
>> In fact I think we should do the cleanup at the end of the thread, however
>> since the thread is expected to live __forever__, maybe we can simply ignore
>> the cleanup.
>
> That's what I'm thinking too.
>
> I don't think there is any problem assuming the monotonic clock is
> available (I think it's been around a very long time) so there's no
> point in complicating things to cater for that case.
>
> Although I am thinking of checking the return and calling the fatal()
> function on failure as I do for other pthreads functions that should
> never fail, so if it does fail we'll get a simple message and a core so
> we know where to look.
>
Yes, those messages will definitely be very useful for debugging, do
you mind that I update my patch to add those checking and messages? Or
will it be better to submit a new patch for that job?
>>
>> >> +
>> >> if (pattrs)
>> >> pthread_attr_destroy(pattrs);
>> >>
>> >
>> >
>
>
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-17 9:12 ` Ning Yu
@ 2015-09-18 1:36 ` Ian Kent
2015-09-18 7:16 ` [PATCH v5 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-18 7:20 ` [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Ning Yu
0 siblings, 2 replies; 32+ messages in thread
From: Ian Kent @ 2015-09-18 1:36 UTC (permalink / raw)
To: Ning Yu; +Cc: autofs, Yu Ning
On Thu, 2015-09-17 at 17:12 +0800, Ning Yu wrote:
> On Thu, Sep 17, 2015 at 4:39 PM, Ian Kent <raven@themaw.net> wrote:
> > On Thu, 2015-09-17 at 15:19 +0800, Ning Yu wrote:
> >> On Thu, Sep 17, 2015 at 2:49 PM, Ian Kent <raven@themaw.net> wrote:
> >> > On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
> >> >> The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
> >> >> we need to switch to use the monotic clock.
> >> >>
> >> >> Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
> >> >> ---
> >> >> lib/alarm.c | 13 ++++++++++++-
> >> >> 1 file changed, 12 insertions(+), 1 deletion(-)
> >> >>
> >> >> diff --git a/lib/alarm.c b/lib/alarm.c
> >> >> index 65a80ae..5b98b2d 100755
> >> >> --- a/lib/alarm.c
> >> >> +++ b/lib/alarm.c
> >> >> @@ -23,7 +23,7 @@ struct alarm {
> >> >> };
> >> >>
> >> >> static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
> >> >> -static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
> >> >> +static pthread_cond_t cond;
> >> >> static LIST_HEAD(alarms);
> >> >>
> >> >> #define alarm_lock() \
> >> >> @@ -212,6 +212,7 @@ int alarm_start_handler(void)
> >> >> pthread_t thid;
> >> >> pthread_attr_t attrs;
> >> >> pthread_attr_t *pattrs = &attrs;
> >> >> + pthread_condattr_t condattrs;
> >> >> int status;
> >> >>
> >> >> status = pthread_attr_init(pattrs);
> >> >> @@ -224,8 +225,18 @@ int alarm_start_handler(void)
> >> >> #endif
> >> >> }
> >> >>
> >> >> + status = pthread_condattr_init(&condattrs);
> >> >> + if (status)
> >> >> + fatal(status);
> >> >> +
> >> >> + pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
> >> >> + pthread_cond_init(&cond, &condattrs);
> >> >> +
> >> >> status = pthread_create(&thid, pattrs, alarm_handler, NULL);
> >> >>
> >> >> + pthread_condattr_destroy(&condattrs);
> >> >> + pthread_condattr_destroy(&cond);
> >> >
> >> > I don't think we can do this.
> >> >
> >> > The condition is used by the alarm_handler() for the duration of it's
> >> > life so I don't think we can't destroy its attributes after thread
> >> > creation.
> >> >
> >> > In fact I'm not sure we even need the pthread_condattr_destroy(&cond)
> >> > but I'm not sure.
> >> >
> >> > Destroying the condition attributes (condattrs) OTOH must not affect any
> >> > condition which it has been used to initialize so destroying that is
> >> > fine.
> >> >
> >> > Let me have a closer look at this, maybe I've misunderstood what's going
> >> > on, and report back later.
> >> >
> >>
> >> I think you are right, we shouldn't destroy the cond attrs, nor the cond
> >> (and I used wrong function to destroy cond...) if the thread is successfully
> >> created.
> >>
> >> In fact I think we should do the cleanup at the end of the thread, however
> >> since the thread is expected to live __forever__, maybe we can simply ignore
> >> the cleanup.
> >
> > That's what I'm thinking too.
> >
> > I don't think there is any problem assuming the monotonic clock is
> > available (I think it's been around a very long time) so there's no
> > point in complicating things to cater for that case.
> >
> > Although I am thinking of checking the return and calling the fatal()
> > function on failure as I do for other pthreads functions that should
> > never fail, so if it does fail we'll get a simple message and a core so
> > we know where to look.
> >
>
> Yes, those messages will definitely be very useful for debugging, do
> you mind that I update my patch to add those checking and messages? Or
> will it be better to submit a new patch for that job?
Sure, send an updated patch, I'm not able to start work on it quite yet.
>
> >>
> >> >> +
> >> >> if (pattrs)
> >> >> pthread_attr_destroy(pattrs);
> >> >>
> >> >
> >> >
> >
> >
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply [flat|nested] 32+ messages in thread
* [PATCH v5 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday().
2015-09-18 1:36 ` Ian Kent
@ 2015-09-18 7:16 ` Yu Ning
2015-09-18 7:16 ` [PATCH v5 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
2015-09-18 7:16 ` [PATCH v5 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
2015-09-18 7:20 ` [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Ning Yu
1 sibling, 2 replies; 32+ messages in thread
From: Yu Ning @ 2015-09-18 7:16 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
The time returned by gettimeofday() is affected by discontinuous jumps
in the system time, so it causes an issue that autofs may not auto
unmount a mount point if system time is manually changed by the system
administrator.
To fix the issue we can use clock_gettime(CLOCK_MONOTONIC) instead of
gettimeofday().
A new function monotonic_elapsed() is introduced in rpc_subs.h as a
timespec version of elapsed().
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
daemon/direct.c | 12 ++++++------
daemon/indirect.c | 12 ++++++------
include/rpc_subs.h | 1 +
lib/alarm.c | 6 +++---
lib/rpc_subs.c | 17 ++++++++++++-----
modules/replicated.c | 30 ++++++++++++++----------------
6 files changed, 42 insertions(+), 36 deletions(-)
diff --git a/daemon/direct.c b/daemon/direct.c
index 5569299..cdd7f49 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -1041,7 +1041,7 @@ int handle_packet_expire_direct(struct autofs_point *ap, autofs_packet_expire_di
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -1159,9 +1159,9 @@ int handle_packet_expire_direct(struct autofs_point *ap, autofs_packet_expire_di
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -1296,7 +1296,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
char buf[MAX_ERR_BUF];
int status = 0;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int ioctlfd, len, state;
unsigned int kver_major = get_kver_major();
unsigned int kver_minor = get_kver_minor();
@@ -1478,9 +1478,9 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index a04a624..0ea9b19 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -636,7 +636,7 @@ int handle_packet_expire_indirect(struct autofs_point *ap, autofs_packet_expire_
char buf[MAX_ERR_BUF];
pthread_t thid;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
int status, state;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
@@ -691,9 +691,9 @@ int handle_packet_expire_indirect(struct autofs_point *ap, autofs_packet_expire_
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
@@ -795,7 +795,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
char buf[MAX_ERR_BUF];
struct pending_args *mt;
struct timespec wait;
- struct timeval now;
+ struct timespec now;
struct mapent *me;
int status, state;
@@ -884,9 +884,9 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
mt->signaled = 0;
while (!mt->signaled) {
- gettimeofday(&now, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &now);
wait.tv_sec = now.tv_sec + 2;
- wait.tv_nsec = now.tv_usec * 1000;
+ wait.tv_nsec = now.tv_nsec;
status = pthread_cond_timedwait(&mt->cond, &mt->mutex, &wait);
if (status && status != ETIMEDOUT)
fatal(status);
diff --git a/include/rpc_subs.h b/include/rpc_subs.h
index b6d59f9..e329224 100644
--- a/include/rpc_subs.h
+++ b/include/rpc_subs.h
@@ -71,6 +71,7 @@ int rpc_portmap_getport(struct conn_info *, struct pmap *, unsigned short *);
int rpc_ping_proto(struct conn_info *);
int rpc_ping(const char *, long, long, unsigned int);
double elapsed(struct timeval, struct timeval);
+double monotonic_elapsed(struct timespec, struct timespec);
int rpc_time(const char *, unsigned int, unsigned int, long, long, unsigned int, double *);
const char *get_addr_string(struct sockaddr *, char *, socklen_t);
diff --git a/lib/alarm.c b/lib/alarm.c
index 0f04ef8..65a80ae 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -178,14 +178,14 @@ static void *alarm_handler(void *arg)
now = time(NULL);
if (first->time > now) {
- struct timeval usecs;
+ struct timespec nsecs;
/*
* Wait for alarm to trigger or a new alarm
* to be added.
*/
- gettimeofday(&usecs, NULL);
+ clock_gettime(CLOCK_MONOTONIC, &nsecs);
expire.tv_sec = first->time;
- expire.tv_nsec = usecs.tv_usec * 1000;
+ expire.tv_nsec = nsecs.tv_nsec;
status = pthread_cond_timedwait(&cond, &mutex, &expire);
if (status && status != ETIMEDOUT)
diff --git a/lib/rpc_subs.c b/lib/rpc_subs.c
index 846c40e..e8c0ca5 100644
--- a/lib/rpc_subs.c
+++ b/lib/rpc_subs.c
@@ -1086,25 +1086,32 @@ double elapsed(struct timeval start, struct timeval end)
return t2-t1;
}
+double monotonic_elapsed(struct timespec start, struct timespec end)
+{
+ double t1, t2;
+ t1 = (double)start.tv_sec + (double)start.tv_nsec/(1000*1000*1000);
+ t2 = (double)end.tv_sec + (double)end.tv_nsec/(1000*1000*1000);
+ return t2-t1;
+}
+
int rpc_time(const char *host,
unsigned int ping_vers, unsigned int ping_proto,
long seconds, long micros, unsigned int option, double *result)
{
int status;
double taken;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
int proto = (ping_proto & RPC_PING_UDP) ? IPPROTO_UDP : IPPROTO_TCP;
unsigned long vers = ping_vers;
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = __rpc_ping(host, vers, proto, seconds, micros, option);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == RPC_PING_FAIL || status < 0)
return status;
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
if (result != NULL)
*result = taken;
diff --git a/modules/replicated.c b/modules/replicated.c
index 32860d5..0f0cc51 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -231,8 +231,7 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
socklen_t len = INET6_ADDRSTRLEN;
char buf[len + 1];
struct pmap parms;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
unsigned int supported = 0;
double taken = 0;
int status, count = 0;
@@ -292,9 +291,9 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -306,7 +305,7 @@ static unsigned int get_nfs_info(unsigned logopt, struct host *host,
debug(logopt,
"nfs v4 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v4 rpc ping time: %f", reply);
}
taken += reply;
@@ -351,9 +350,9 @@ v3_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT) {
supported = status;
goto done_ver;
@@ -365,7 +364,7 @@ v3_ver:
debug(logopt,
"nfs v3 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);
+ reply = monotonic_elapsed(start, end);
debug(logopt, "nfs v3 rpc ping time: %f", reply);
}
taken += reply;
@@ -407,9 +406,9 @@ v2_ver:
supported = status;
goto done_ver;
} else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status == -ETIMEDOUT)
supported = status;
else if (status > 0) {
@@ -420,7 +419,7 @@ v2_ver:
debug(logopt,
"nfs v2 random selection time: %f", reply);
} else {
- reply = elapsed(start, end);;
+ reply = monotonic_elapsed(start, end);;
debug(logopt, "nfs v2 rpc ping time: %f", reply);
}
taken += reply;
@@ -523,8 +522,7 @@ static int get_supported_ver_and_cost(unsigned logopt, struct host *host,
struct conn_info pm_info, rpc_info;
int proto;
unsigned int vers;
- struct timeval start, end;
- struct timezone tz;
+ struct timespec start, end;
double taken = 0;
time_t timeout = RPC_TIMEOUT;
int status = 0;
@@ -610,16 +608,16 @@ static int get_supported_ver_and_cost(unsigned logopt, struct host *host,
if (status == -EHOSTUNREACH)
goto done;
else if (!status) {
- gettimeofday(&start, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &start);
status = rpc_ping_proto(&rpc_info);
- gettimeofday(&end, &tz);
+ clock_gettime(CLOCK_MONOTONIC, &end);
if (status > 0) {
if (random_selection) {
/* Random value between 0 and 1 */
taken = ((float) random())/((float) RAND_MAX+1);
debug(logopt, "random selection time %f", taken);
} else {
- taken = elapsed(start, end);
+ taken = monotonic_elapsed(start, end);
debug(logopt, "rpc ping time %f", taken);
}
}
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH v5 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-18 7:16 ` [PATCH v5 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
@ 2015-09-18 7:16 ` Yu Ning
2015-09-18 7:16 ` [PATCH v5 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
1 sibling, 0 replies; 32+ messages in thread
From: Yu Ning @ 2015-09-18 7:16 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
we need to switch to use the monotic clock.
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
lib/alarm.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/lib/alarm.c b/lib/alarm.c
index 65a80ae..10ad4ab 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -23,7 +23,7 @@ struct alarm {
};
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t cond;
static LIST_HEAD(alarms);
#define alarm_lock() \
@@ -212,20 +212,40 @@ int alarm_start_handler(void)
pthread_t thid;
pthread_attr_t attrs;
pthread_attr_t *pattrs = &attrs;
+ pthread_condattr_t condattrs;
int status;
status = pthread_attr_init(pattrs);
if (status)
pattrs = NULL;
else {
- pthread_attr_setdetachstate(pattrs, PTHREAD_CREATE_DETACHED);
+ status = pthread_attr_setdetachstate(pattrs, PTHREAD_CREATE_DETACHED);
+ if (status)
+ fatal(status);
#ifdef _POSIX_THREAD_ATTR_STACKSIZE
- pthread_attr_setstacksize(pattrs, PTHREAD_STACK_MIN*4);
+ status = pthread_attr_setstacksize(pattrs, PTHREAD_STACK_MIN*4);
+ if (status)
+ fatal(status);
#endif
}
+ status = pthread_condattr_init(&condattrs);
+ if (status)
+ fatal(status);
+ status = pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
+ if (status)
+ fatal(status);
+ status = pthread_cond_init(&cond, &condattrs);
+ if (status)
+ fatal(status);
+
status = pthread_create(&thid, pattrs, alarm_handler, NULL);
+ if (status) {
+ pthread_condattr_destroy(&condattrs);
+ pthread_cond_destroy(&cond);
+ }
+
if (pattrs)
pthread_attr_destroy(pattrs);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe autofs" in
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH v5 3/3] autofs-5.1.1 - use monotonic clock instead of time().
2015-09-18 7:16 ` [PATCH v5 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-18 7:16 ` [PATCH v5 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
@ 2015-09-18 7:16 ` Yu Ning
1 sibling, 0 replies; 32+ messages in thread
From: Yu Ning @ 2015-09-18 7:16 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
A new function monotonic_time() is introduced in automount.h as a
monotonic version of time(), all the calls to time() have been switched
to use this new function.
Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
---
daemon/automount.c | 4 ++--
daemon/direct.c | 4 ++--
daemon/indirect.c | 4 ++--
daemon/lookup.c | 6 +++---
daemon/state.c | 2 +-
include/automount.h | 9 +++++++++
lib/alarm.c | 4 ++--
lib/cache.c | 2 +-
lib/master.c | 4 ++--
modules/dclist.c | 2 +-
modules/lookup_file.c | 8 ++++----
modules/lookup_hesiod.c | 6 +++---
modules/lookup_hosts.c | 4 ++--
modules/lookup_ldap.c | 10 +++++-----
modules/lookup_nisplus.c | 10 +++++-----
modules/lookup_program.c | 10 +++++-----
modules/lookup_sss.c | 6 +++---
modules/lookup_userhome.c | 2 +-
modules/lookup_yp.c | 8 ++++----
modules/mount_autofs.c | 2 +-
modules/parse_amd.c | 2 +-
modules/replicated.c | 4 ++--
22 files changed, 61 insertions(+), 52 deletions(-)
diff --git a/daemon/automount.c b/daemon/automount.c
index 229cb1a..a49ceee 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
break;
case SIGHUP:
- do_hup_signal(master_list, time(NULL));
+ do_hup_signal(master_list, monotonic_time(NULL));
break;
default:
@@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
unsigned ghost, logging, daemon_check;
unsigned dumpmaps, foreground, have_global_options;
time_t timeout;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct rlimit rlim;
const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
static const struct option long_options[] = {
diff --git a/daemon/direct.c b/daemon/direct.c
index cdd7f49..470a719 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
struct mapent_cache *nc, *mc;
struct mapent *me, *ne, *nested;
struct mnt_list *mnts;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
if (strcmp(ap->path, "/-")) {
error(ap->logopt, "expected direct map, exiting");
@@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct autofs_point *ap, autofs_packet_missing_
}
/* Check if we recorded a mount fail for this key */
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt,
ioctlfd, pkt->wait_queue_token, -ENOENT);
ops->close(ap->logopt, ioctlfd);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index 0ea9b19..b2015f9 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -197,7 +197,7 @@ out_err:
int mount_autofs_indirect(struct autofs_point *ap, const char *root)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int status;
int map;
@@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct autofs_point *ap, autofs_packet_missin
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
ops->send_fail(ap->logopt, ap->ioctlfd,
pkt->wait_queue_token, -ENOENT);
cache_unlock(me->mc);
diff --git a/daemon/lookup.c b/daemon/lookup.c
index 62071df..9a8fa7e 100644
--- a/daemon/lookup.c
+++ b/daemon/lookup.c
@@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct autofs_point *ap, struct map_
struct map_source *instance;
char src_file[] = "file";
char src_prog[] = "program";
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
struct stat st;
char *type, *format;
@@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct autofs_point *ap, struct map_sourc
{
struct map_source *instance;
const char *format;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
return lookup_amd_instance(ap, map, name, name_len);
@@ -1079,7 +1079,7 @@ static void update_negative_cache(struct autofs_point *ap, struct map_source *so
else
map = entry->maps;
if (map) {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int rv = CHE_FAIL;
cache_writelock(map->mc);
diff --git a/daemon/state.c b/daemon/state.c
index 3174a9c..08828b1 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
pthread_t thid;
struct readmap_args *ra;
int status;
- int now = time(NULL);
+ int now = monotonic_time(NULL);
debug(ap->logopt, "state %d path %s", ap->state, ap->path);
diff --git a/include/automount.h b/include/automount.h
index 447aba1..7bbf859 100644
--- a/include/automount.h
+++ b/include/automount.h
@@ -565,6 +565,15 @@ do { \
fatal(_m_unlock); \
} while(0)
+static inline time_t monotonic_time(time_t *t)
+{
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (t)
+ *t = (time_t) ts.tv_sec;
+ return (time_t) ts.tv_sec;
+}
+
/* Expire alarm handling routines */
int alarm_start_handler(void);
int alarm_add(struct autofs_point *ap, time_t seconds);
diff --git a/lib/alarm.c b/lib/alarm.c
index 10ad4ab..38ff418 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
struct list_head *head;
struct list_head *p;
struct alarm *new;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t next_alarm = 0;
unsigned int empty = 1;
int status;
@@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)
first = list_entry(head->next, struct alarm, list);
- now = time(NULL);
+ now = monotonic_time(NULL);
if (first->time > now) {
struct timespec nsecs;
diff --git a/lib/cache.c b/lib/cache.c
index 631d275..44e323d 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
struct map_source *ms, const char *key,
time_t timeout)
{
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
struct mapent *me;
int rv = CHE_OK;
diff --git a/lib/master.c b/lib/master.c
index 6c38b1c..cca8371 100644
--- a/lib/master.c
+++ b/lib/master.c
@@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char *type, const char *name)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
this = list_entry(p, struct master_mapent, list);
p = p->next;
@@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
struct map_source *source;
struct master_mapent *this;
struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
unsigned int count = 0;
this = list_entry(p, struct master_mapent, list);
diff --git a/modules/dclist.c b/modules/dclist.c
index af21ce0..4daa199 100644
--- a/modules/dclist.c
+++ b/modules/dclist.c
@@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt, const char *uri)
if (!list)
goto out_error;
- dclist->expire = time(NULL) + min_ttl;
+ dclist->expire = monotonic_time(NULL) + min_ttl;
dclist->uri = list;
return dclist;
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index 7c982c6..4e52fce 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
{
char buf[MAX_ERR_BUF];
struct mapent_cache *mc;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *lkp_key;
char *prefix;
size_t map_key_len;
@@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc = source->mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
struct mapent_cache *mc;
char mkey[KEY_MAX_LEN + 1];
char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
FILE *f;
unsigned int k_len, m_len;
int entry, ret;
@@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
index 526f294..9da4f8e 100644
--- a/modules/lookup_hesiod.c
+++ b/modules/lookup_hesiod.c
@@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, key, best_record, time(NULL));
+ ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
hesiod_free_list(ctxt->hesiod_context, hes_result);
@@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
+ ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
cache_unlock(mc);
if (hes_result)
@@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
index 0d48356..8c4bbd9 100644
--- a/modules/lookup_hosts.c
+++ b/modules/lookup_hosts.c
@@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
struct mapent *me;
char *mapent = NULL;
int mapent_len;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
int ret;
source = ap->entry->current;
@@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
index 5da613e..d45e7d1 100644
--- a/modules/lookup_ldap.c
+++ b/modules/lookup_ldap.c
@@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct lookup_context *ctxt)
uris_mutex_lock(ctxt);
if (ctxt->dclist) {
- if (!ldap || ctxt->dclist->expire < time(NULL)) {
+ if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
free_dclist(ctxt->dclist);
ctxt->dclist = NULL;
}
@@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap, struct map_source *source,
struct mapent_cache *mc;
int rv, i, l, ql, count;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char *query;
LDAPMessage *result = NULL, *e;
char *class, *info, *entry;
@@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
struct berval **bvKey;
struct berval **bvValues;
char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int rv, l, ql, count;
int ret = CHE_MISSING;
@@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
int status;
@@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index d5eba47..17d3dde 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
nis_result *result;
nis_object *this;
char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret, cur_state;
char buf[MAX_ERR_BUF];
@@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
mapent = ENTRY_VAL(this, 1);
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
nis_freeresult(result);
@@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
struct mapent_cache *mc;
struct mapent *me, *exists;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret = 0;
@@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_program.c b/modules/lookup_program.c
index a3a7e98..eff774b 100644
--- a/modules/lookup_program.c
+++ b/modules/lookup_program.c
@@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", start, time(NULL));
+ ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
start++;
}
cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, start, time(NULL));
+ ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(ment);
@@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
while (isblank(*start))
start++;
cache_writelock(mc);
- ret = cache_update(mc, source, match, start, time(NULL));
+ ret = cache_update(mc, source, match, start, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
free(match);
@@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, name, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
@@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
* proceed with the program map lookup.
*/
if (strchr(name, '/') ||
- me->age + ap->negative_timeout > time(NULL)) {
+ me->age + ap->negative_timeout > monotonic_time(NULL)) {
char *ent = NULL;
if (me->mapent) {
diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
index 528ab41..d685ccf 100644
--- a/modules/lookup_sss.c
+++ b/modules/lookup_sss.c
@@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
struct mapent_cache *mc;
struct mapent *we;
void *sss_ctxt = NULL;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
char buf[MAX_ERR_BUF];
char *value = NULL;
char *s_key;
@@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
struct map_source *source;
struct mapent_cache *mc;
struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
time_t t_last_read;
int ret, cur_state;
@@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
index fb3caaa..d0c3e80 100644
--- a/modules/lookup_userhome.c
+++ b/modules/lookup_userhome.c
@@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
}
cache_writelock(mc);
- ret = cache_update(mc, source, name, NULL, time(NULL));
+ ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
cache_unlock(mc);
if (ret == CHE_FAIL) {
diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
index fcf470a..3ffa4b6 100644
--- a/modules/lookup_yp.c
+++ b/modules/lookup_yp.c
@@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
char *mapname;
char *mapent;
int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
int ret;
mc = source->mc;
@@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
return CHE_FAIL;
cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
cache_unlock(mc);
return ret;
@@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Check if we recorded a mount fail for this key anywhere */
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
cache_unlock(me->mc);
return NSS_STATUS_NOTFOUND;
} else {
diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
index 4846e7f..05ea1c1 100644
--- a/modules/mount_autofs.c
+++ b/modules/mount_autofs.c
@@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name,
source = master_add_map_source(entry,
info->type, info->format,
- time(NULL), argc, argv);
+ monotonic_time(NULL), argc, argv);
if (!source) {
error(ap->logopt,
MODPREFIX "failed to add map source to entry");
diff --git a/modules/parse_amd.c b/modules/parse_amd.c
index 899be40..6e29c6c 100644
--- a/modules/parse_amd.c
+++ b/modules/parse_amd.c
@@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point *ap, const char *name,
"hosts", "sun", argc, pargv);
if (!instance) {
instance = master_add_source_instance(source,
- "hosts", "sun", time(NULL), argc, pargv);
+ "hosts", "sun", monotonic_time(NULL), argc, pargv);
if (!instance) {
error(ap->logopt, MODPREFIX
"failed to create source instance for hosts map");
diff --git a/modules/replicated.c b/modules/replicated.c
index 0f0cc51..8da1148 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -69,14 +69,14 @@ void seed_random(void)
fd = open_fd("/dev/urandom", O_RDONLY);
if (fd < 0) {
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
return;
}
if (read(fd, &seed, sizeof(seed)) != -1)
srandom(seed);
else
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
close(fd);
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait.
2015-09-18 1:36 ` Ian Kent
2015-09-18 7:16 ` [PATCH v5 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
@ 2015-09-18 7:20 ` Ning Yu
1 sibling, 0 replies; 32+ messages in thread
From: Ning Yu @ 2015-09-18 7:20 UTC (permalink / raw)
To: Ian Kent; +Cc: autofs, Yu Ning
On Fri, Sep 18, 2015 at 9:36 AM, Ian Kent <raven@themaw.net> wrote:
> On Thu, 2015-09-17 at 17:12 +0800, Ning Yu wrote:
>> On Thu, Sep 17, 2015 at 4:39 PM, Ian Kent <raven@themaw.net> wrote:
>> > On Thu, 2015-09-17 at 15:19 +0800, Ning Yu wrote:
>> >> On Thu, Sep 17, 2015 at 2:49 PM, Ian Kent <raven@themaw.net> wrote:
>> >> > On Thu, 2015-09-17 at 11:48 +0800, Yu Ning wrote:
>> >> >> The default PTHREAD_COND_INITIALIZER initializer uses realtime clock,
>> >> >> we need to switch to use the monotic clock.
>> >> >>
>> >> >> Signed-off-by: Yu Ning <ning.yu@ubuntu.com>
>> >> >> ---
>> >> >> lib/alarm.c | 13 ++++++++++++-
>> >> >> 1 file changed, 12 insertions(+), 1 deletion(-)
>> >> >>
>> >> >> diff --git a/lib/alarm.c b/lib/alarm.c
>> >> >> index 65a80ae..5b98b2d 100755
>> >> >> --- a/lib/alarm.c
>> >> >> +++ b/lib/alarm.c
>> >> >> @@ -23,7 +23,7 @@ struct alarm {
>> >> >> };
>> >> >>
>> >> >> static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
>> >> >> -static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
>> >> >> +static pthread_cond_t cond;
>> >> >> static LIST_HEAD(alarms);
>> >> >>
>> >> >> #define alarm_lock() \
>> >> >> @@ -212,6 +212,7 @@ int alarm_start_handler(void)
>> >> >> pthread_t thid;
>> >> >> pthread_attr_t attrs;
>> >> >> pthread_attr_t *pattrs = &attrs;
>> >> >> + pthread_condattr_t condattrs;
>> >> >> int status;
>> >> >>
>> >> >> status = pthread_attr_init(pattrs);
>> >> >> @@ -224,8 +225,18 @@ int alarm_start_handler(void)
>> >> >> #endif
>> >> >> }
>> >> >>
>> >> >> + status = pthread_condattr_init(&condattrs);
>> >> >> + if (status)
>> >> >> + fatal(status);
>> >> >> +
>> >> >> + pthread_condattr_setclock(&condattrs, CLOCK_MONOTONIC);
>> >> >> + pthread_cond_init(&cond, &condattrs);
>> >> >> +
>> >> >> status = pthread_create(&thid, pattrs, alarm_handler, NULL);
>> >> >>
>> >> >> + pthread_condattr_destroy(&condattrs);
>> >> >> + pthread_condattr_destroy(&cond);
>> >> >
>> >> > I don't think we can do this.
>> >> >
>> >> > The condition is used by the alarm_handler() for the duration of it's
>> >> > life so I don't think we can't destroy its attributes after thread
>> >> > creation.
>> >> >
>> >> > In fact I'm not sure we even need the pthread_condattr_destroy(&cond)
>> >> > but I'm not sure.
>> >> >
>> >> > Destroying the condition attributes (condattrs) OTOH must not affect any
>> >> > condition which it has been used to initialize so destroying that is
>> >> > fine.
>> >> >
>> >> > Let me have a closer look at this, maybe I've misunderstood what's going
>> >> > on, and report back later.
>> >> >
>> >>
>> >> I think you are right, we shouldn't destroy the cond attrs, nor the cond
>> >> (and I used wrong function to destroy cond...) if the thread is successfully
>> >> created.
>> >>
>> >> In fact I think we should do the cleanup at the end of the thread, however
>> >> since the thread is expected to live __forever__, maybe we can simply ignore
>> >> the cleanup.
>> >
>> > That's what I'm thinking too.
>> >
>> > I don't think there is any problem assuming the monotonic clock is
>> > available (I think it's been around a very long time) so there's no
>> > point in complicating things to cater for that case.
>> >
>> > Although I am thinking of checking the return and calling the fatal()
>> > function on failure as I do for other pthreads functions that should
>> > never fail, so if it does fail we'll get a simple message and a core so
>> > we know where to look.
>> >
>>
>> Yes, those messages will definitely be very useful for debugging, do
>> you mind that I update my patch to add those checking and messages? Or
>> will it be better to submit a new patch for that job?
>
> Sure, send an updated patch, I'm not able to start work on it quite yet.
>
v5 patches are sent to you, please check for v5-0002 for the updates.
>>
>> >>
>> >> >> +
>> >> >> if (pattrs)
>> >> >> pthread_attr_destroy(pattrs);
>> >> >>
>> >> >
>> >> >
>> >
>> >
>
>
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^ permalink raw reply [flat|nested] 32+ messages in thread
end of thread, other threads:[~2015-09-18 7:20 UTC | newest]
Thread overview: 32+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-09-16 8:29 Mount point not auto unmounted after system date/time change Ning Yu
2015-09-16 8:45 ` Ning Yu
2015-09-16 9:16 ` Ian Kent
2015-09-16 10:28 ` Ning Yu
2015-09-16 10:43 ` Ian Kent
2015-09-16 11:02 ` Ning Yu
2015-09-16 11:21 ` Ian Kent
2015-09-17 3:48 ` [PATCH v3 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-17 3:48 ` [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
2015-09-17 6:49 ` Ian Kent
2015-09-17 7:19 ` Ning Yu
2015-09-17 8:39 ` Ian Kent
2015-09-17 9:12 ` Ning Yu
2015-09-18 1:36 ` Ian Kent
2015-09-18 7:16 ` [PATCH v5 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-18 7:16 ` [PATCH v5 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
2015-09-18 7:16 ` [PATCH v5 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
2015-09-18 7:20 ` [PATCH v3 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Ning Yu
2015-09-17 3:48 ` [PATCH v3 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
2015-09-17 7:04 ` Ian Kent
2015-09-17 7:16 ` Ian Kent
2015-09-17 7:34 ` Ning Yu
2015-09-17 4:02 ` Mount point not auto unmounted after system date/time change Ning Yu
2015-09-17 4:09 ` [PATCH v4 1/3] autofs-5.1.1 - use clock_gettime() instead of gettimeofday() Yu Ning
2015-09-17 4:09 ` [PATCH v4 2/3] autofs-5.1.1 - use monotonic clock for pthread cond timed wait Yu Ning
2015-09-17 4:09 ` [PATCH v4 3/3] autofs-5.1.1 - use monotonic clock instead of time() Yu Ning
2015-09-17 4:17 ` Mount point not auto unmounted after system date/time change Ning Yu
2015-09-17 6:07 ` Ian Kent
2015-09-17 6:05 ` Ian Kent
2015-09-16 10:30 ` Ning Yu
2015-09-16 10:30 ` Ning Yu
2015-09-16 10:30 ` Ning Yu
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