* [PATCH 0/7] seq_printf cleanups
[not found] <20140929124246.3e39dac8@gandalf.local.home>
@ 2014-09-29 23:08 ` Joe Perches
2014-09-29 23:08 ` [PATCH 2/7] netfilter: Convert print_tuple functions to return void Joe Perches
` (2 more replies)
0 siblings, 3 replies; 10+ messages in thread
From: Joe Perches @ 2014-09-29 23:08 UTC (permalink / raw)
To: Steven Rostedt
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds, linux-doc,
linux-kernel, linux-mtd, netdev, cluster-devel, linux-fsdevel,
netfilter-devel, coreteam
seq_printf should return void.
Add a public bool seq_is_full function that can be used to shortcut
unnecesary seq_printf/seq_puts calls when the seq buffer is full.
Start removing the misuses of the seq_printf/seq_puts return value.
Patchset brought forward from an unreplied to set of changes from
back in December 2013.
https://lkml.org/lkml/2013/12/11/713
Renamed seq_is_buf_full to seq_is_full.
Joe Perches (7):
seq_file: Rename static bool seq_overflow to public bool seq_is_full
netfilter: Convert print_tuple functions to return void
dlm: Use seq_is_full - remove seq_printf returns
dlm: Use seq_puts, remove unnecessary trailing spaces
fs: Convert show_fdinfo functions to void
debugfs: Fix misuse of seq_printf return value
docg3: Fix mixuse of seq_printf return value
Documentation/filesystems/seq_file.txt | 28 +--
Documentation/filesystems/vfs.txt | 2 +-
drivers/mtd/devices/docg3.c | 112 ++++++------
drivers/net/tun.c | 4 +-
fs/debugfs/file.c | 14 +-
fs/dlm/debug_fs.c | 260 +++++++++++++--------------
fs/eventfd.c | 15 +-
fs/eventpoll.c | 19 +-
fs/notify/fdinfo.c | 76 ++++----
fs/notify/fdinfo.h | 4 +-
fs/proc/fd.c | 2 +-
fs/seq_file.c | 28 +--
fs/signalfd.c | 10 +-
fs/timerfd.c | 27 +--
include/linux/fs.h | 2 +-
include/linux/seq_file.h | 8 +
include/net/netfilter/nf_conntrack_core.h | 2 +-
include/net/netfilter/nf_conntrack_l3proto.h | 4 +-
include/net/netfilter/nf_conntrack_l4proto.h | 4 +-
net/netfilter/nf_conntrack_l3proto_generic.c | 5 +-
net/netfilter/nf_conntrack_proto_dccp.c | 10 +-
net/netfilter/nf_conntrack_proto_generic.c | 5 +-
net/netfilter/nf_conntrack_proto_gre.c | 10 +-
net/netfilter/nf_conntrack_proto_sctp.c | 10 +-
net/netfilter/nf_conntrack_proto_tcp.c | 10 +-
net/netfilter/nf_conntrack_proto_udp.c | 10 +-
net/netfilter/nf_conntrack_proto_udplite.c | 10 +-
net/netfilter/nf_conntrack_standalone.c | 15 +-
28 files changed, 333 insertions(+), 373 deletions(-)
--
1.8.1.2.459.gbcd45b4.dirty
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH 2/7] netfilter: Convert print_tuple functions to return void
2014-09-29 23:08 ` [PATCH 0/7] seq_printf cleanups Joe Perches
@ 2014-09-29 23:08 ` Joe Perches
2014-09-30 10:22 ` Petr Mladek
2014-09-29 23:08 ` [PATCH 5/7] fs: Convert show_fdinfo functions to void Joe Perches
2014-10-28 15:32 ` [PATCH 0/7] seq_printf cleanups Steven Rostedt
2 siblings, 1 reply; 10+ messages in thread
From: Joe Perches @ 2014-09-29 23:08 UTC (permalink / raw)
To: Steven Rostedt
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds,
Pablo Neira Ayuso, Patrick McHardy, Jozsef Kadlecsik,
David S. Miller, netfilter-devel, coreteam, netdev, linux-kernel
Since adding a new function to seq_file (seq_is_full)
there isn't any value for functions called from seq_show to
return anything. Remove the int returns of the various
print_tuple/<foo>_print_tuple functions.
Signed-off-by: Joe Perches <joe@perches.com>
---
include/net/netfilter/nf_conntrack_core.h | 2 +-
include/net/netfilter/nf_conntrack_l3proto.h | 4 ++--
include/net/netfilter/nf_conntrack_l4proto.h | 4 ++--
net/netfilter/nf_conntrack_l3proto_generic.c | 5 ++---
net/netfilter/nf_conntrack_proto_dccp.c | 10 +++++-----
net/netfilter/nf_conntrack_proto_generic.c | 5 ++---
net/netfilter/nf_conntrack_proto_gre.c | 10 +++++-----
net/netfilter/nf_conntrack_proto_sctp.c | 10 +++++-----
net/netfilter/nf_conntrack_proto_tcp.c | 10 +++++-----
net/netfilter/nf_conntrack_proto_udp.c | 10 +++++-----
net/netfilter/nf_conntrack_proto_udplite.c | 10 +++++-----
net/netfilter/nf_conntrack_standalone.c | 15 +++++++--------
12 files changed, 46 insertions(+), 49 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index cc0c188..f2f0fa3 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -72,7 +72,7 @@ static inline int nf_conntrack_confirm(struct sk_buff *skb)
return ret;
}
-int
+void
print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_l3proto *l3proto,
const struct nf_conntrack_l4proto *proto);
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index adc1fa3..cdc920b 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -38,8 +38,8 @@ struct nf_conntrack_l3proto {
const struct nf_conntrack_tuple *orig);
/* Print out the per-protocol part of the tuple. */
- int (*print_tuple)(struct seq_file *s,
- const struct nf_conntrack_tuple *);
+ void (*print_tuple)(struct seq_file *s,
+ const struct nf_conntrack_tuple *);
/*
* Called before tracking.
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 4c8d573..fead8ee 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -56,8 +56,8 @@ struct nf_conntrack_l4proto {
u_int8_t pf, unsigned int hooknum);
/* Print out the per-protocol part of the tuple. Return like seq_* */
- int (*print_tuple)(struct seq_file *s,
- const struct nf_conntrack_tuple *);
+ void (*print_tuple)(struct seq_file *s,
+ const struct nf_conntrack_tuple *);
/* Print out the private part of the conntrack. */
int (*print_conntrack)(struct seq_file *s, struct nf_conn *);
diff --git a/net/netfilter/nf_conntrack_l3proto_generic.c b/net/netfilter/nf_conntrack_l3proto_generic.c
index e7eb807..cf9ace7 100644
--- a/net/netfilter/nf_conntrack_l3proto_generic.c
+++ b/net/netfilter/nf_conntrack_l3proto_generic.c
@@ -49,10 +49,9 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-static int generic_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void generic_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return 0;
}
static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index cb372f9..40d96f9 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -618,12 +618,12 @@ out_invalid:
return -NF_ACCEPT;
}
-static int dccp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void dccp_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.dccp.port),
- ntohs(tuple->dst.u.dccp.port));
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.dccp.port),
+ ntohs(tuple->dst.u.dccp.port));
}
static int dccp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index d25f293..0a3ded1 100644
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -39,10 +39,9 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
}
/* Print out the per-protocol part of the tuple. */
-static int generic_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void generic_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return 0;
}
static unsigned int *generic_get_timeouts(struct net *net)
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index d566573..cd85336 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -226,12 +226,12 @@ static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
}
/* print gre part of tuple */
-static int gre_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void gre_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return seq_printf(s, "srckey=0x%x dstkey=0x%x ",
- ntohs(tuple->src.u.gre.key),
- ntohs(tuple->dst.u.gre.key));
+ seq_printf(s, "srckey=0x%x dstkey=0x%x ",
+ ntohs(tuple->src.u.gre.key),
+ ntohs(tuple->dst.u.gre.key));
}
/* print private data for conntrack */
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index 1314d33..1b1d0e9 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -166,12 +166,12 @@ static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
}
/* Print out the per-protocol part of the tuple. */
-static int sctp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void sctp_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.sctp.port),
- ntohs(tuple->dst.u.sctp.port));
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.sctp.port),
+ ntohs(tuple->dst.u.sctp.port));
}
/* Print out the private part of the conntrack. */
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 44d1ea3..c2693e78 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -302,12 +302,12 @@ static bool tcp_invert_tuple(struct nf_conntrack_tuple *tuple,
}
/* Print out the per-protocol part of the tuple. */
-static int tcp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void tcp_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.tcp.port),
- ntohs(tuple->dst.u.tcp.port));
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.tcp.port),
+ ntohs(tuple->dst.u.tcp.port));
}
/* Print out the private part of the conntrack. */
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 9d7721c..6957281 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -63,12 +63,12 @@ static bool udp_invert_tuple(struct nf_conntrack_tuple *tuple,
}
/* Print out the per-protocol part of the tuple. */
-static int udp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void udp_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.udp.port),
- ntohs(tuple->dst.u.udp.port));
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.udp.port),
+ ntohs(tuple->dst.u.udp.port));
}
static unsigned int *udp_get_timeouts(struct net *net)
diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c
index 2750e6c..c5903d1 100644
--- a/net/netfilter/nf_conntrack_proto_udplite.c
+++ b/net/netfilter/nf_conntrack_proto_udplite.c
@@ -71,12 +71,12 @@ static bool udplite_invert_tuple(struct nf_conntrack_tuple *tuple,
}
/* Print out the per-protocol part of the tuple. */
-static int udplite_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
+static void udplite_print_tuple(struct seq_file *s,
+ const struct nf_conntrack_tuple *tuple)
{
- return seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.udp.port),
- ntohs(tuple->dst.u.udp.port));
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.udp.port),
+ ntohs(tuple->dst.u.udp.port));
}
static unsigned int *udplite_get_timeouts(struct net *net)
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index cf65a1e..3c2ce5c 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -36,12 +36,13 @@
MODULE_LICENSE("GPL");
#ifdef CONFIG_NF_CONNTRACK_PROCFS
-int
+void
print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_l3proto *l3proto,
const struct nf_conntrack_l4proto *l4proto)
{
- return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple);
+ l3proto->print_tuple(s, tuple);
+ l4proto->print_tuple(s, tuple);
}
EXPORT_SYMBOL_GPL(print_tuple);
@@ -202,9 +203,8 @@ static int ct_seq_show(struct seq_file *s, void *v)
if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
goto release;
- if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
- l3proto, l4proto))
- goto release;
+ print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
+ l3proto, l4proto);
if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
goto release;
@@ -213,9 +213,8 @@ static int ct_seq_show(struct seq_file *s, void *v)
if (seq_printf(s, "[UNREPLIED] "))
goto release;
- if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
- l3proto, l4proto))
- goto release;
+ print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
+ l3proto, l4proto);
if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
goto release;
--
1.8.1.2.459.gbcd45b4.dirty
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 5/7] fs: Convert show_fdinfo functions to void
2014-09-29 23:08 ` [PATCH 0/7] seq_printf cleanups Joe Perches
2014-09-29 23:08 ` [PATCH 2/7] netfilter: Convert print_tuple functions to return void Joe Perches
@ 2014-09-29 23:08 ` Joe Perches
2014-10-28 14:11 ` Steven Rostedt
2014-10-28 15:32 ` [PATCH 0/7] seq_printf cleanups Steven Rostedt
2 siblings, 1 reply; 10+ messages in thread
From: Joe Perches @ 2014-09-29 23:08 UTC (permalink / raw)
To: Steven Rostedt
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds, Jiri Kosina,
Alexander Viro, Thomas Gleixner, Jeff Layton, J. Bruce Fields,
linux-doc, linux-kernel, netdev, linux-fsdevel
seq_printf functions shouldn't really check the return value.
Checking seq_is_full occasionally is used instead.
Update vfs documentation.
Signed-off-by: Joe Perches <joe@perches.com>
---
Documentation/filesystems/vfs.txt | 2 +-
drivers/net/tun.c | 4 +--
fs/eventfd.c | 15 +++-----
fs/eventpoll.c | 19 ++++------
fs/notify/fdinfo.c | 76 +++++++++++++++++----------------------
fs/notify/fdinfo.h | 4 +--
fs/proc/fd.c | 2 +-
fs/signalfd.c | 10 ++----
fs/timerfd.c | 27 +++++++-------
include/linux/fs.h | 2 +-
10 files changed, 68 insertions(+), 93 deletions(-)
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index fceff7c..af1dbc1 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -828,7 +828,7 @@ struct file_operations {
ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
int (*setlease)(struct file *, long arg, struct file_lock **, void **);
long (*fallocate)(struct file *, int mode, loff_t offset, loff_t len);
- int (*show_fdinfo)(struct seq_file *m, struct file *f);
+ void (*show_fdinfo)(struct seq_file *m, struct file *f);
};
Again, all methods are called without any locks being held, unless
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 186ce54..a3420e0 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -2209,7 +2209,7 @@ static int tun_chr_close(struct inode *inode, struct file *file)
}
#ifdef CONFIG_PROC_FS
-static int tun_chr_show_fdinfo(struct seq_file *m, struct file *f)
+static void tun_chr_show_fdinfo(struct seq_file *m, struct file *f)
{
struct tun_struct *tun;
struct ifreq ifr;
@@ -2225,7 +2225,7 @@ static int tun_chr_show_fdinfo(struct seq_file *m, struct file *f)
if (tun)
tun_put(tun);
- return seq_printf(m, "iff:\t%s\n", ifr.ifr_name);
+ seq_printf(m, "iff:\t%s\n", ifr.ifr_name);
}
#endif
diff --git a/fs/eventfd.c b/fs/eventfd.c
index d6a88e7..abcb25d 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -286,25 +286,20 @@ static ssize_t eventfd_write(struct file *file, const char __user *buf, size_t c
return res;
}
-#ifdef CONFIG_PROC_FS
-static int eventfd_show_fdinfo(struct seq_file *m, struct file *f)
+static void eventfd_show_fdinfo(struct seq_file *m, struct file *f)
{
+#ifdef CONFIG_PROC_FS
struct eventfd_ctx *ctx = f->private_data;
- int ret;
spin_lock_irq(&ctx->wqh.lock);
- ret = seq_printf(m, "eventfd-count: %16llx\n",
- (unsigned long long)ctx->count);
+ seq_printf(m, "eventfd-count: %16llx\n",
+ (unsigned long long)ctx->count);
spin_unlock_irq(&ctx->wqh.lock);
-
- return ret;
-}
#endif
+}
static const struct file_operations eventfd_fops = {
-#ifdef CONFIG_PROC_FS
.show_fdinfo = eventfd_show_fdinfo,
-#endif
.release = eventfd_release,
.poll = eventfd_poll,
.read = eventfd_read,
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 7bcfff9..4e742b6 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -869,34 +869,29 @@ static unsigned int ep_eventpoll_poll(struct file *file, poll_table *wait)
return pollflags != -1 ? pollflags : 0;
}
-#ifdef CONFIG_PROC_FS
-static int ep_show_fdinfo(struct seq_file *m, struct file *f)
+static void ep_show_fdinfo(struct seq_file *m, struct file *f)
{
+#ifdef CONFIG_PROC_FS
struct eventpoll *ep = f->private_data;
struct rb_node *rbp;
- int ret = 0;
mutex_lock(&ep->mtx);
for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) {
struct epitem *epi = rb_entry(rbp, struct epitem, rbn);
- ret = seq_printf(m, "tfd: %8d events: %8x data: %16llx\n",
- epi->ffd.fd, epi->event.events,
- (long long)epi->event.data);
- if (ret)
+ seq_printf(m, "tfd: %8d events: %8x data: %16llx\n",
+ epi->ffd.fd, epi->event.events,
+ (long long)epi->event.data);
+ if (seq_is_full(m))
break;
}
mutex_unlock(&ep->mtx);
-
- return ret;
-}
#endif
+}
/* File callbacks that implement the eventpoll file behaviour */
static const struct file_operations eventpoll_fops = {
-#ifdef CONFIG_PROC_FS
.show_fdinfo = ep_show_fdinfo,
-#endif
.release = ep_eventpoll_release,
.poll = ep_eventpoll_poll,
.llseek = noop_llseek,
diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c
index 9d7e2b9..0bb10b7 100644
--- a/fs/notify/fdinfo.c
+++ b/fs/notify/fdinfo.c
@@ -20,25 +20,24 @@
#if defined(CONFIG_INOTIFY_USER) || defined(CONFIG_FANOTIFY)
-static int show_fdinfo(struct seq_file *m, struct file *f,
- int (*show)(struct seq_file *m, struct fsnotify_mark *mark))
+static void show_fdinfo(struct seq_file *m, struct file *f,
+ void (*show)(struct seq_file *m,
+ struct fsnotify_mark *mark))
{
struct fsnotify_group *group = f->private_data;
struct fsnotify_mark *mark;
- int ret = 0;
mutex_lock(&group->mark_mutex);
list_for_each_entry(mark, &group->marks_list, g_list) {
- ret = show(m, mark);
- if (ret)
+ show(m, mark);
+ if (seq_is_full(m))
break;
}
mutex_unlock(&group->mark_mutex);
- return ret;
}
#if defined(CONFIG_EXPORTFS)
-static int show_mark_fhandle(struct seq_file *m, struct inode *inode)
+static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
{
struct {
struct file_handle handle;
@@ -52,71 +51,62 @@ static int show_mark_fhandle(struct seq_file *m, struct inode *inode)
ret = exportfs_encode_inode_fh(inode, (struct fid *)f.handle.f_handle, &size, 0);
if ((ret == FILEID_INVALID) || (ret < 0)) {
WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret);
- return 0;
+ return;
}
f.handle.handle_type = ret;
f.handle.handle_bytes = size * sizeof(u32);
- ret = seq_printf(m, "fhandle-bytes:%x fhandle-type:%x f_handle:",
- f.handle.handle_bytes, f.handle.handle_type);
+ seq_printf(m, "fhandle-bytes:%x fhandle-type:%x f_handle:",
+ f.handle.handle_bytes, f.handle.handle_type);
for (i = 0; i < f.handle.handle_bytes; i++)
- ret |= seq_printf(m, "%02x", (int)f.handle.f_handle[i]);
-
- return ret;
+ seq_printf(m, "%02x", (int)f.handle.f_handle[i]);
}
#else
-static int show_mark_fhandle(struct seq_file *m, struct inode *inode)
+static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
{
- return 0;
}
#endif
#ifdef CONFIG_INOTIFY_USER
-static int inotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
+static void inotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
{
struct inotify_inode_mark *inode_mark;
struct inode *inode;
- int ret = 0;
if (!(mark->flags & (FSNOTIFY_MARK_FLAG_ALIVE | FSNOTIFY_MARK_FLAG_INODE)))
- return 0;
+ return;
inode_mark = container_of(mark, struct inotify_inode_mark, fsn_mark);
inode = igrab(mark->i.inode);
if (inode) {
- ret = seq_printf(m, "inotify wd:%x ino:%lx sdev:%x "
- "mask:%x ignored_mask:%x ",
- inode_mark->wd, inode->i_ino,
- inode->i_sb->s_dev,
- mark->mask, mark->ignored_mask);
- ret |= show_mark_fhandle(m, inode);
- ret |= seq_putc(m, '\n');
+ seq_printf(m, "inotify wd:%x ino:%lx sdev:%x mask:%x ignored_mask:%x ",
+ inode_mark->wd, inode->i_ino, inode->i_sb->s_dev,
+ mark->mask, mark->ignored_mask);
+ show_mark_fhandle(m, inode);
+ seq_putc(m, '\n');
iput(inode);
}
-
- return ret;
}
-int inotify_show_fdinfo(struct seq_file *m, struct file *f)
+void inotify_show_fdinfo(struct seq_file *m, struct file *f)
{
- return show_fdinfo(m, f, inotify_fdinfo);
+ show_fdinfo(m, f, inotify_fdinfo);
}
#endif /* CONFIG_INOTIFY_USER */
#ifdef CONFIG_FANOTIFY
-static int fanotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
+static void fanotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
{
unsigned int mflags = 0;
struct inode *inode;
- int ret = 0;
if (!(mark->flags & FSNOTIFY_MARK_FLAG_ALIVE))
- return 0;
+ return;
if (mark->flags & FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY)
mflags |= FAN_MARK_IGNORED_SURV_MODIFY;
@@ -125,25 +115,23 @@ static int fanotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
inode = igrab(mark->i.inode);
if (!inode)
goto out;
- ret = seq_printf(m, "fanotify ino:%lx sdev:%x "
- "mflags:%x mask:%x ignored_mask:%x ",
- inode->i_ino, inode->i_sb->s_dev,
- mflags, mark->mask, mark->ignored_mask);
- ret |= show_mark_fhandle(m, inode);
- ret |= seq_putc(m, '\n');
+ seq_printf(m, "fanotify ino:%lx sdev:%x mflags:%x mask:%x ignored_mask:%x ",
+ inode->i_ino, inode->i_sb->s_dev,
+ mflags, mark->mask, mark->ignored_mask);
+ show_mark_fhandle(m, inode);
+ seq_putc(m, '\n');
iput(inode);
} else if (mark->flags & FSNOTIFY_MARK_FLAG_VFSMOUNT) {
struct mount *mnt = real_mount(mark->m.mnt);
- ret = seq_printf(m, "fanotify mnt_id:%x mflags:%x mask:%x "
- "ignored_mask:%x\n", mnt->mnt_id, mflags,
- mark->mask, mark->ignored_mask);
+ seq_printf(m, "fanotify mnt_id:%x mflags:%x mask:%x ignored_mask:%x\n",
+ mnt->mnt_id, mflags, mark->mask, mark->ignored_mask);
}
out:
- return ret;
+ ;
}
-int fanotify_show_fdinfo(struct seq_file *m, struct file *f)
+void fanotify_show_fdinfo(struct seq_file *m, struct file *f)
{
struct fsnotify_group *group = f->private_data;
unsigned int flags = 0;
@@ -169,7 +157,7 @@ int fanotify_show_fdinfo(struct seq_file *m, struct file *f)
seq_printf(m, "fanotify flags:%x event-flags:%x\n",
flags, group->fanotify_data.f_flags);
- return show_fdinfo(m, f, fanotify_fdinfo);
+ show_fdinfo(m, f, fanotify_fdinfo);
}
#endif /* CONFIG_FANOTIFY */
diff --git a/fs/notify/fdinfo.h b/fs/notify/fdinfo.h
index 556afda..9664c49 100644
--- a/fs/notify/fdinfo.h
+++ b/fs/notify/fdinfo.h
@@ -10,11 +10,11 @@ struct file;
#ifdef CONFIG_PROC_FS
#ifdef CONFIG_INOTIFY_USER
-extern int inotify_show_fdinfo(struct seq_file *m, struct file *f);
+void inotify_show_fdinfo(struct seq_file *m, struct file *f);
#endif
#ifdef CONFIG_FANOTIFY
-extern int fanotify_show_fdinfo(struct seq_file *m, struct file *f);
+void fanotify_show_fdinfo(struct seq_file *m, struct file *f);
#endif
#else /* CONFIG_PROC_FS */
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index e11d7c5..4c3c253 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -53,7 +53,7 @@ static int seq_show(struct seq_file *m, void *v)
(long long)file->f_pos, f_flags,
real_mount(file->f_path.mnt)->mnt_id);
if (file->f_op->show_fdinfo)
- ret = file->f_op->show_fdinfo(m, file);
+ file->f_op->show_fdinfo(m, file);
fput(file);
}
diff --git a/fs/signalfd.c b/fs/signalfd.c
index 424b7b6..06bd5a2 100644
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -229,24 +229,20 @@ static ssize_t signalfd_read(struct file *file, char __user *buf, size_t count,
return total ? total: ret;
}
-#ifdef CONFIG_PROC_FS
-static int signalfd_show_fdinfo(struct seq_file *m, struct file *f)
+static void signalfd_show_fdinfo(struct seq_file *m, struct file *f)
{
+#ifdef CONFIG_PROC_FS
struct signalfd_ctx *ctx = f->private_data;
sigset_t sigmask;
sigmask = ctx->sigmask;
signotset(&sigmask);
render_sigset_t(m, "sigmask:\t", &sigmask);
-
- return 0;
-}
#endif
+}
static const struct file_operations signalfd_fops = {
-#ifdef CONFIG_PROC_FS
.show_fdinfo = signalfd_show_fdinfo,
-#endif
.release = signalfd_release,
.poll = signalfd_poll,
.read = signalfd_read,
diff --git a/fs/timerfd.c b/fs/timerfd.c
index b46ffa9..b94fa6c 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -288,7 +288,7 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
}
#ifdef CONFIG_PROC_FS
-static int timerfd_show(struct seq_file *m, struct file *file)
+static void timerfd_show(struct seq_file *m, struct file *file)
{
struct timerfd_ctx *ctx = file->private_data;
struct itimerspec t;
@@ -298,18 +298,19 @@ static int timerfd_show(struct seq_file *m, struct file *file)
t.it_interval = ktime_to_timespec(ctx->tintv);
spin_unlock_irq(&ctx->wqh.lock);
- return seq_printf(m,
- "clockid: %d\n"
- "ticks: %llu\n"
- "settime flags: 0%o\n"
- "it_value: (%llu, %llu)\n"
- "it_interval: (%llu, %llu)\n",
- ctx->clockid, (unsigned long long)ctx->ticks,
- ctx->settime_flags,
- (unsigned long long)t.it_value.tv_sec,
- (unsigned long long)t.it_value.tv_nsec,
- (unsigned long long)t.it_interval.tv_sec,
- (unsigned long long)t.it_interval.tv_nsec);
+ seq_printf(m,
+ "clockid: %d\n"
+ "ticks: %llu\n"
+ "settime flags: 0%o\n"
+ "it_value: (%llu, %llu)\n"
+ "it_interval: (%llu, %llu)\n",
+ ctx->clockid,
+ (unsigned long long)ctx->ticks,
+ ctx->settime_flags,
+ (unsigned long long)t.it_value.tv_sec,
+ (unsigned long long)t.it_value.tv_nsec,
+ (unsigned long long)t.it_interval.tv_sec,
+ (unsigned long long)t.it_interval.tv_nsec);
}
#else
#define timerfd_show NULL
diff --git a/include/linux/fs.h b/include/linux/fs.h
index a4ce5bae..e2f67f0 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1494,7 +1494,7 @@ struct file_operations {
int (*setlease)(struct file *, long, struct file_lock **, void **);
long (*fallocate)(struct file *file, int mode, loff_t offset,
loff_t len);
- int (*show_fdinfo)(struct seq_file *m, struct file *f);
+ void (*show_fdinfo)(struct seq_file *m, struct file *f);
};
struct inode_operations {
--
1.8.1.2.459.gbcd45b4.dirty
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH 2/7] netfilter: Convert print_tuple functions to return void
2014-09-29 23:08 ` [PATCH 2/7] netfilter: Convert print_tuple functions to return void Joe Perches
@ 2014-09-30 10:22 ` Petr Mladek
2014-09-30 13:04 ` Joe Perches
0 siblings, 1 reply; 10+ messages in thread
From: Petr Mladek @ 2014-09-30 10:22 UTC (permalink / raw)
To: Joe Perches
Cc: Steven Rostedt, Al Viro, Andrew Morton, Linus Torvalds,
Pablo Neira Ayuso, Patrick McHardy, Jozsef Kadlecsik,
David S. Miller, netfilter-devel, coreteam, netdev, linux-kernel
On Mon 29-09-14 16:08:22, Joe Perches wrote:
> Since adding a new function to seq_file (seq_is_full)
> there isn't any value for functions called from seq_show to
> return anything. Remove the int returns of the various
> print_tuple/<foo>_print_tuple functions.
>
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
> include/net/netfilter/nf_conntrack_core.h | 2 +-
> include/net/netfilter/nf_conntrack_l3proto.h | 4 ++--
> include/net/netfilter/nf_conntrack_l4proto.h | 4 ++--
> net/netfilter/nf_conntrack_l3proto_generic.c | 5 ++---
> net/netfilter/nf_conntrack_proto_dccp.c | 10 +++++-----
> net/netfilter/nf_conntrack_proto_generic.c | 5 ++---
> net/netfilter/nf_conntrack_proto_gre.c | 10 +++++-----
> net/netfilter/nf_conntrack_proto_sctp.c | 10 +++++-----
> net/netfilter/nf_conntrack_proto_tcp.c | 10 +++++-----
> net/netfilter/nf_conntrack_proto_udp.c | 10 +++++-----
> net/netfilter/nf_conntrack_proto_udplite.c | 10 +++++-----
> net/netfilter/nf_conntrack_standalone.c | 15 +++++++--------
> 12 files changed, 46 insertions(+), 49 deletions(-)
>
> diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
> index cc0c188..f2f0fa3 100644
> --- a/include/net/netfilter/nf_conntrack_core.h
> +++ b/include/net/netfilter/nf_conntrack_core.h
> @@ -72,7 +72,7 @@ static inline int nf_conntrack_confirm(struct sk_buff *skb)
> return ret;
> }
>
> -int
> +void
> print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
> const struct nf_conntrack_l3proto *l3proto,
> const struct nf_conntrack_l4proto *proto);
> diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
> index adc1fa3..cdc920b 100644
> --- a/include/net/netfilter/nf_conntrack_l3proto.h
> +++ b/include/net/netfilter/nf_conntrack_l3proto.h
> @@ -38,8 +38,8 @@ struct nf_conntrack_l3proto {
> const struct nf_conntrack_tuple *orig);
>
> /* Print out the per-protocol part of the tuple. */
> - int (*print_tuple)(struct seq_file *s,
> - const struct nf_conntrack_tuple *);
> + void (*print_tuple)(struct seq_file *s,
> + const struct nf_conntrack_tuple *);
>
> /*
> * Called before tracking.
> diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
> index 4c8d573..fead8ee 100644
> --- a/include/net/netfilter/nf_conntrack_l4proto.h
> +++ b/include/net/netfilter/nf_conntrack_l4proto.h
> @@ -56,8 +56,8 @@ struct nf_conntrack_l4proto {
> u_int8_t pf, unsigned int hooknum);
>
> /* Print out the per-protocol part of the tuple. Return like seq_* */
> - int (*print_tuple)(struct seq_file *s,
> - const struct nf_conntrack_tuple *);
> + void (*print_tuple)(struct seq_file *s,
> + const struct nf_conntrack_tuple *);
>
> /* Print out the private part of the conntrack. */
> int (*print_conntrack)(struct seq_file *s, struct nf_conn *);
> diff --git a/net/netfilter/nf_conntrack_l3proto_generic.c b/net/netfilter/nf_conntrack_l3proto_generic.c
> index e7eb807..cf9ace7 100644
> --- a/net/netfilter/nf_conntrack_l3proto_generic.c
> +++ b/net/netfilter/nf_conntrack_l3proto_generic.c
> @@ -49,10 +49,9 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
> return true;
> }
>
> -static int generic_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void generic_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return 0;
> }
>
> static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
> diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
> index cb372f9..40d96f9 100644
> --- a/net/netfilter/nf_conntrack_proto_dccp.c
> +++ b/net/netfilter/nf_conntrack_proto_dccp.c
> @@ -618,12 +618,12 @@ out_invalid:
> return -NF_ACCEPT;
> }
>
> -static int dccp_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void dccp_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return seq_printf(s, "sport=%hu dport=%hu ",
> - ntohs(tuple->src.u.dccp.port),
> - ntohs(tuple->dst.u.dccp.port));
> + seq_printf(s, "sport=%hu dport=%hu ",
> + ntohs(tuple->src.u.dccp.port),
> + ntohs(tuple->dst.u.dccp.port));
> }
>
> static int dccp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
> diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
> index d25f293..0a3ded1 100644
> --- a/net/netfilter/nf_conntrack_proto_generic.c
> +++ b/net/netfilter/nf_conntrack_proto_generic.c
> @@ -39,10 +39,9 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
> }
>
> /* Print out the per-protocol part of the tuple. */
> -static int generic_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void generic_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return 0;
> }
>
> static unsigned int *generic_get_timeouts(struct net *net)
> diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
> index d566573..cd85336 100644
> --- a/net/netfilter/nf_conntrack_proto_gre.c
> +++ b/net/netfilter/nf_conntrack_proto_gre.c
> @@ -226,12 +226,12 @@ static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
> }
>
> /* print gre part of tuple */
> -static int gre_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void gre_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return seq_printf(s, "srckey=0x%x dstkey=0x%x ",
> - ntohs(tuple->src.u.gre.key),
> - ntohs(tuple->dst.u.gre.key));
> + seq_printf(s, "srckey=0x%x dstkey=0x%x ",
> + ntohs(tuple->src.u.gre.key),
> + ntohs(tuple->dst.u.gre.key));
> }
>
> /* print private data for conntrack */
> diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
> index 1314d33..1b1d0e9 100644
> --- a/net/netfilter/nf_conntrack_proto_sctp.c
> +++ b/net/netfilter/nf_conntrack_proto_sctp.c
> @@ -166,12 +166,12 @@ static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
> }
>
> /* Print out the per-protocol part of the tuple. */
> -static int sctp_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void sctp_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return seq_printf(s, "sport=%hu dport=%hu ",
> - ntohs(tuple->src.u.sctp.port),
> - ntohs(tuple->dst.u.sctp.port));
> + seq_printf(s, "sport=%hu dport=%hu ",
> + ntohs(tuple->src.u.sctp.port),
> + ntohs(tuple->dst.u.sctp.port));
> }
>
> /* Print out the private part of the conntrack. */
> diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
> index 44d1ea3..c2693e78 100644
> --- a/net/netfilter/nf_conntrack_proto_tcp.c
> +++ b/net/netfilter/nf_conntrack_proto_tcp.c
> @@ -302,12 +302,12 @@ static bool tcp_invert_tuple(struct nf_conntrack_tuple *tuple,
> }
>
> /* Print out the per-protocol part of the tuple. */
> -static int tcp_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void tcp_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return seq_printf(s, "sport=%hu dport=%hu ",
> - ntohs(tuple->src.u.tcp.port),
> - ntohs(tuple->dst.u.tcp.port));
> + seq_printf(s, "sport=%hu dport=%hu ",
> + ntohs(tuple->src.u.tcp.port),
> + ntohs(tuple->dst.u.tcp.port));
> }
>
> /* Print out the private part of the conntrack. */
> diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
> index 9d7721c..6957281 100644
> --- a/net/netfilter/nf_conntrack_proto_udp.c
> +++ b/net/netfilter/nf_conntrack_proto_udp.c
> @@ -63,12 +63,12 @@ static bool udp_invert_tuple(struct nf_conntrack_tuple *tuple,
> }
>
> /* Print out the per-protocol part of the tuple. */
> -static int udp_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void udp_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return seq_printf(s, "sport=%hu dport=%hu ",
> - ntohs(tuple->src.u.udp.port),
> - ntohs(tuple->dst.u.udp.port));
> + seq_printf(s, "sport=%hu dport=%hu ",
> + ntohs(tuple->src.u.udp.port),
> + ntohs(tuple->dst.u.udp.port));
> }
>
> static unsigned int *udp_get_timeouts(struct net *net)
> diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c
> index 2750e6c..c5903d1 100644
> --- a/net/netfilter/nf_conntrack_proto_udplite.c
> +++ b/net/netfilter/nf_conntrack_proto_udplite.c
> @@ -71,12 +71,12 @@ static bool udplite_invert_tuple(struct nf_conntrack_tuple *tuple,
> }
>
> /* Print out the per-protocol part of the tuple. */
> -static int udplite_print_tuple(struct seq_file *s,
> - const struct nf_conntrack_tuple *tuple)
> +static void udplite_print_tuple(struct seq_file *s,
> + const struct nf_conntrack_tuple *tuple)
> {
> - return seq_printf(s, "sport=%hu dport=%hu ",
> - ntohs(tuple->src.u.udp.port),
> - ntohs(tuple->dst.u.udp.port));
> + seq_printf(s, "sport=%hu dport=%hu ",
> + ntohs(tuple->src.u.udp.port),
> + ntohs(tuple->dst.u.udp.port));
> }
>
> static unsigned int *udplite_get_timeouts(struct net *net)
> diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
> index cf65a1e..3c2ce5c 100644
> --- a/net/netfilter/nf_conntrack_standalone.c
> +++ b/net/netfilter/nf_conntrack_standalone.c
> @@ -36,12 +36,13 @@
> MODULE_LICENSE("GPL");
>
> #ifdef CONFIG_NF_CONNTRACK_PROCFS
> -int
> +void
> print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
> const struct nf_conntrack_l3proto *l3proto,
> const struct nf_conntrack_l4proto *l4proto)
> {
> - return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple);
> + l3proto->print_tuple(s, tuple);
> + l4proto->print_tuple(s, tuple);
> }
> EXPORT_SYMBOL_GPL(print_tuple);
>
> @@ -202,9 +203,8 @@ static int ct_seq_show(struct seq_file *s, void *v)
> if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
> goto release;
>
> - if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
> - l3proto, l4proto))
> - goto release;
> + print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
> + l3proto, l4proto);
To be precise, we should add:
if (seq_overflow(s))
goto release;
> if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
> goto release;
> @@ -213,9 +213,8 @@ static int ct_seq_show(struct seq_file *s, void *v)
> if (seq_printf(s, "[UNREPLIED] "))
> goto release;
>
> - if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
> - l3proto, l4proto))
> - goto release;
> + print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
> + l3proto, l4proto);
same here
> if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
> goto release;
> --
> 1.8.1.2.459.gbcd45b4.dirty
>
Best Regards,
Petr
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/7] netfilter: Convert print_tuple functions to return void
2014-09-30 10:22 ` Petr Mladek
@ 2014-09-30 13:04 ` Joe Perches
0 siblings, 0 replies; 10+ messages in thread
From: Joe Perches @ 2014-09-30 13:04 UTC (permalink / raw)
To: Petr Mladek
Cc: Steven Rostedt, Al Viro, Andrew Morton, Linus Torvalds,
Pablo Neira Ayuso, Patrick McHardy, Jozsef Kadlecsik,
David S. Miller, netfilter-devel, coreteam, netdev, linux-kernel
On Tue, 2014-09-30 at 12:22 +0200, Petr Mladek wrote:
> On Mon 29-09-14 16:08:22, Joe Perches wrote:
> > Since adding a new function to seq_file (seq_is_full)
> > there isn't any value for functions called from seq_show to
> > return anything. Remove the int returns of the various
> > print_tuple/<foo>_print_tuple functions.
[a bunch of quoted stuff]
Please remember to cut out from your replies the unnecessary old stuff.
It can take quite awhile to scan through looking for your comments.
> > diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
[]
> > @@ -202,9 +203,8 @@ static int ct_seq_show(struct seq_file *s, void *v)
> > if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
> > goto release;
> >
> > - if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
> > - l3proto, l4proto))
> > - goto release;
> > + print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
> > + l3proto, l4proto);
>
> To be precise, we should add:
>
> if (seq_overflow(s))
> goto release;
Precision isn't all that useful when checking seq_<output>.
There really isn't much value in checking each possible
overflow site. A periodic check prior to or in the middle
of a more costly/longish operation should be acceptable.
The entire block that precedes any seq buffer full test will
be redone when the buffer is expanded.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 5/7] fs: Convert show_fdinfo functions to void
2014-09-29 23:08 ` [PATCH 5/7] fs: Convert show_fdinfo functions to void Joe Perches
@ 2014-10-28 14:11 ` Steven Rostedt
2014-10-28 14:31 ` Joe Perches
0 siblings, 1 reply; 10+ messages in thread
From: Steven Rostedt @ 2014-10-28 14:11 UTC (permalink / raw)
To: Joe Perches
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds, Jiri Kosina,
Thomas Gleixner, Jeff Layton, J. Bruce Fields, linux-doc,
linux-kernel, netdev, linux-fsdevel
On Mon, 29 Sep 2014 16:08:25 -0700
Joe Perches <joe@perches.com> wrote:
> seq_printf functions shouldn't really check the return value.
> Checking seq_is_full occasionally is used instead.
>
> Update vfs documentation.
>
> Signed-off-by: Joe Perches <joe@perches.com>
>
> -#ifdef CONFIG_PROC_FS
> -static int eventfd_show_fdinfo(struct seq_file *m, struct file *f)
> +static void eventfd_show_fdinfo(struct seq_file *m, struct file *f)
> {
> +#ifdef CONFIG_PROC_FS
> struct eventfd_ctx *ctx = f->private_data;
> - int ret;
>
> spin_lock_irq(&ctx->wqh.lock);
> - ret = seq_printf(m, "eventfd-count: %16llx\n",
> - (unsigned long long)ctx->count);
> + seq_printf(m, "eventfd-count: %16llx\n",
> + (unsigned long long)ctx->count);
> spin_unlock_irq(&ctx->wqh.lock);
> -
> - return ret;
> -}
> #endif
> +}
>
> static const struct file_operations eventfd_fops = {
> -#ifdef CONFIG_PROC_FS
> .show_fdinfo = eventfd_show_fdinfo,
> -#endif
I wouldn't change logic on this. There's no reason to call this
function if it isn't doing anything.
I'll change this to just do the update and not change logic like this.
-- Steve
> .release = eventfd_release,
> .poll = eventfd_poll,
> .read = eventfd_read,
> diff --git a/fs/proc/fd.c b/fs/proc/fd.c
> index e11d7c5..4c3c253 100644
> --- a/fs/proc/fd.c
> +++ b/fs/proc/fd.c
> @@ -53,7 +53,7 @@ static int seq_show(struct seq_file *m, void *v)
> (long long)file->f_pos, f_flags,
> real_mount(file->f_path.mnt)->mnt_id);
> if (file->f_op->show_fdinfo)
> - ret = file->f_op->show_fdinfo(m, file);
> + file->f_op->show_fdinfo(m, file);
> fput(file);
> }
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 5/7] fs: Convert show_fdinfo functions to void
2014-10-28 14:11 ` Steven Rostedt
@ 2014-10-28 14:31 ` Joe Perches
2014-10-28 14:43 ` Steven Rostedt
0 siblings, 1 reply; 10+ messages in thread
From: Joe Perches @ 2014-10-28 14:31 UTC (permalink / raw)
To: Steven Rostedt
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds, Jiri Kosina,
Thomas Gleixner, Jeff Layton, J. Bruce Fields, linux-doc,
linux-kernel, netdev, linux-fsdevel
On Tue, 2014-10-28 at 10:11 -0400, Steven Rostedt wrote:
> On Mon, 29 Sep 2014 16:08:25 -0700
> Joe Perches <joe@perches.com> wrote:
>
> > seq_printf functions shouldn't really check the return value.
> > Checking seq_is_full occasionally is used instead.
> >
> > Update vfs documentation.
> >
> > Signed-off-by: Joe Perches <joe@perches.com>
>
>
> >
> > -#ifdef CONFIG_PROC_FS
> > -static int eventfd_show_fdinfo(struct seq_file *m, struct file *f)
> > +static void eventfd_show_fdinfo(struct seq_file *m, struct file *f)
> > {
> > +#ifdef CONFIG_PROC_FS
> > struct eventfd_ctx *ctx = f->private_data;
> > - int ret;
> >
> > spin_lock_irq(&ctx->wqh.lock);
> > - ret = seq_printf(m, "eventfd-count: %16llx\n",
> > - (unsigned long long)ctx->count);
> > + seq_printf(m, "eventfd-count: %16llx\n",
> > + (unsigned long long)ctx->count);
> > spin_unlock_irq(&ctx->wqh.lock);
> > -
> > - return ret;
> > -}
> > #endif
> > +}
> >
> > static const struct file_operations eventfd_fops = {
> > -#ifdef CONFIG_PROC_FS
> > .show_fdinfo = eventfd_show_fdinfo,
> > -#endif
>
> I wouldn't change logic on this. There's no reason to call this
> function if it isn't doing anything.
>
> I'll change this to just do the update and not change logic like this.
Fewer #ifdefs
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 5/7] fs: Convert show_fdinfo functions to void
2014-10-28 14:31 ` Joe Perches
@ 2014-10-28 14:43 ` Steven Rostedt
0 siblings, 0 replies; 10+ messages in thread
From: Steven Rostedt @ 2014-10-28 14:43 UTC (permalink / raw)
To: Joe Perches
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds, Jiri Kosina,
Thomas Gleixner, Jeff Layton, J. Bruce Fields, linux-doc,
linux-kernel, netdev, linux-fsdevel
On Tue, 28 Oct 2014 07:31:32 -0700
Joe Perches <joe@perches.com> wrote:
> > I wouldn't change logic on this. There's no reason to call this
> > function if it isn't doing anything.
> >
> > I'll change this to just do the update and not change logic like this.
>
> Fewer #ifdefs
>
And there's other ways to fix it (like using an #else), but that is
off-topic to the current change set. In other words, that change should
be separate, as I don't want discussions on what's the best use of
#ifdefs distracting from getting in the "void seq_printf()" changes.
-- Steve
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 0/7] seq_printf cleanups
2014-09-29 23:08 ` [PATCH 0/7] seq_printf cleanups Joe Perches
2014-09-29 23:08 ` [PATCH 2/7] netfilter: Convert print_tuple functions to return void Joe Perches
2014-09-29 23:08 ` [PATCH 5/7] fs: Convert show_fdinfo functions to void Joe Perches
@ 2014-10-28 15:32 ` Steven Rostedt
2014-10-28 15:51 ` Joe Perches
2 siblings, 1 reply; 10+ messages in thread
From: Steven Rostedt @ 2014-10-28 15:32 UTC (permalink / raw)
To: Joe Perches
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds, linux-doc,
linux-kernel, linux-mtd, netdev, cluster-devel, linux-fsdevel,
netfilter-devel, coreteam
Joe,
If you haven't already done so, can you update checkpatch.pl to
complain if someone checks the return value of seq_printf(),
seq_puts(), or seq_putc().
It should state that those functions will soon be returning void.
Thanks!
-- Steve
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 0/7] seq_printf cleanups
2014-10-28 15:32 ` [PATCH 0/7] seq_printf cleanups Steven Rostedt
@ 2014-10-28 15:51 ` Joe Perches
0 siblings, 0 replies; 10+ messages in thread
From: Joe Perches @ 2014-10-28 15:51 UTC (permalink / raw)
To: Steven Rostedt
Cc: Al Viro, Petr Mladek, Andrew Morton, Linus Torvalds, linux-doc,
linux-kernel, linux-mtd, netdev, cluster-devel, linux-fsdevel,
netfilter-devel, coreteam
On Tue, 2014-10-28 at 11:32 -0400, Steven Rostedt wrote:
> If you haven't already done so, can you update checkpatch.pl to
> complain if someone checks the return value of seq_printf(),
> seq_puts(), or seq_putc().
I'm not sure that matters much as a rule because I
hope soon the compiler will bleat when that happens.
There are several more too:
seq_vprintf
seq_escape
seq_write
seq_bitmap
seq_cpumask/seq_nodemask (and _list variants),
seq_put_decimal_xxx
^ permalink raw reply [flat|nested] 10+ messages in thread
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2014-09-30 10:22 ` Petr Mladek
2014-09-30 13:04 ` Joe Perches
2014-09-29 23:08 ` [PATCH 5/7] fs: Convert show_fdinfo functions to void Joe Perches
2014-10-28 14:11 ` Steven Rostedt
2014-10-28 14:31 ` Joe Perches
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2014-10-28 15:32 ` [PATCH 0/7] seq_printf cleanups Steven Rostedt
2014-10-28 15:51 ` Joe Perches
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