From: Jeff Layton <jlayton@kernel.org>
To: linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org
Cc: idryomov@gmail.com, zyan@redhat.com, sage@redhat.com,
agruenba@redhat.com
Subject: [PATCH v4 1/3] ceph: make getxattr_cb return ssize_t
Date: Mon, 24 Jun 2019 12:27:24 -0400 [thread overview]
Message-ID: <20190624162726.17413-2-jlayton@kernel.org> (raw)
In-Reply-To: <20190624162726.17413-1-jlayton@kernel.org>
The getxattr_cb functions return size_t, which is unsigned and then
cast that value to int and then ssize_t before returning it. While all
of this works, it relies on implicit casting rules for signed/unsigned
conversions.
Change getxattr_cb to return ssize_t to better conform with what the
caller actually wants. Also, remove some suspicious casts.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
fs/ceph/xattr.c | 90 ++++++++++++++++++++++++-------------------------
1 file changed, 45 insertions(+), 45 deletions(-)
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 6621d27e64f5..e90e19e9660b 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -32,8 +32,8 @@ static bool ceph_is_valid_xattr(const char *name)
struct ceph_vxattr {
char *name;
size_t name_size; /* strlen(name) + 1 (for '\0') */
- size_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val,
- size_t size);
+ ssize_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val,
+ size_t size);
bool (*exists_cb)(struct ceph_inode_info *ci);
unsigned int flags;
};
@@ -52,8 +52,8 @@ static bool ceph_vxattrcb_layout_exists(struct ceph_inode_info *ci)
rcu_dereference_raw(fl->pool_ns) != NULL);
}
-static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
struct ceph_osd_client *osdc = &fsc->client->osdc;
@@ -80,7 +80,7 @@ static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
len = snprintf(buf, sizeof(buf),
"stripe_unit=%u stripe_count=%u object_size=%u pool=%lld",
ci->i_layout.stripe_unit, ci->i_layout.stripe_count,
- ci->i_layout.object_size, (unsigned long long)pool);
+ ci->i_layout.object_size, pool);
total_len = len;
}
@@ -112,28 +112,28 @@ static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
return ret;
}
-static size_t ceph_vxattrcb_layout_stripe_unit(struct ceph_inode_info *ci,
- char *val, size_t size)
+static ssize_t ceph_vxattrcb_layout_stripe_unit(struct ceph_inode_info *ci,
+ char *val, size_t size)
{
return snprintf(val, size, "%u", ci->i_layout.stripe_unit);
}
-static size_t ceph_vxattrcb_layout_stripe_count(struct ceph_inode_info *ci,
- char *val, size_t size)
+static ssize_t ceph_vxattrcb_layout_stripe_count(struct ceph_inode_info *ci,
+ char *val, size_t size)
{
return snprintf(val, size, "%u", ci->i_layout.stripe_count);
}
-static size_t ceph_vxattrcb_layout_object_size(struct ceph_inode_info *ci,
- char *val, size_t size)
+static ssize_t ceph_vxattrcb_layout_object_size(struct ceph_inode_info *ci,
+ char *val, size_t size)
{
return snprintf(val, size, "%u", ci->i_layout.object_size);
}
-static size_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci,
- char *val, size_t size)
+static ssize_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci,
+ char *val, size_t size)
{
- int ret;
+ ssize_t ret;
struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
struct ceph_osd_client *osdc = &fsc->client->osdc;
s64 pool = ci->i_layout.pool_id;
@@ -144,18 +144,18 @@ static size_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci,
if (pool_name)
ret = snprintf(val, size, "%s", pool_name);
else
- ret = snprintf(val, size, "%lld", (unsigned long long)pool);
+ ret = snprintf(val, size, "%lld", pool);
up_read(&osdc->lock);
return ret;
}
-static size_t ceph_vxattrcb_layout_pool_namespace(struct ceph_inode_info *ci,
- char *val, size_t size)
+static ssize_t ceph_vxattrcb_layout_pool_namespace(struct ceph_inode_info *ci,
+ char *val, size_t size)
{
int ret = 0;
struct ceph_string *ns = ceph_try_get_string(ci->i_layout.pool_ns);
if (ns) {
- ret = snprintf(val, size, "%.*s", (int)ns->len, ns->str);
+ ret = snprintf(val, size, "%.*s", ns->len, ns->str);
ceph_put_string(ns);
}
return ret;
@@ -163,50 +163,50 @@ static size_t ceph_vxattrcb_layout_pool_namespace(struct ceph_inode_info *ci,
/* directories */
-static size_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld", ci->i_files + ci->i_subdirs);
}
-static size_t ceph_vxattrcb_dir_files(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_files(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld", ci->i_files);
}
-static size_t ceph_vxattrcb_dir_subdirs(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_subdirs(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld", ci->i_subdirs);
}
-static size_t ceph_vxattrcb_dir_rentries(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_rentries(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld", ci->i_rfiles + ci->i_rsubdirs);
}
-static size_t ceph_vxattrcb_dir_rfiles(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_rfiles(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld", ci->i_rfiles);
}
-static size_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld", ci->i_rsubdirs);
}
-static size_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld", ci->i_rbytes);
}
-static size_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld.%09ld", ci->i_rctime.tv_sec,
ci->i_rctime.tv_nsec);
@@ -218,8 +218,8 @@ static bool ceph_vxattrcb_dir_pin_exists(struct ceph_inode_info *ci)
return ci->i_dir_pin != -ENODATA;
}
-static size_t ceph_vxattrcb_dir_pin(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_dir_pin(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%d", (int)ci->i_dir_pin);
}
@@ -238,21 +238,21 @@ static bool ceph_vxattrcb_quota_exists(struct ceph_inode_info *ci)
return ret;
}
-static size_t ceph_vxattrcb_quota(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_quota(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "max_bytes=%llu max_files=%llu",
ci->i_max_bytes, ci->i_max_files);
}
-static size_t ceph_vxattrcb_quota_max_bytes(struct ceph_inode_info *ci,
- char *val, size_t size)
+static ssize_t ceph_vxattrcb_quota_max_bytes(struct ceph_inode_info *ci,
+ char *val, size_t size)
{
return snprintf(val, size, "%llu", ci->i_max_bytes);
}
-static size_t ceph_vxattrcb_quota_max_files(struct ceph_inode_info *ci,
- char *val, size_t size)
+static ssize_t ceph_vxattrcb_quota_max_files(struct ceph_inode_info *ci,
+ char *val, size_t size)
{
return snprintf(val, size, "%llu", ci->i_max_files);
}
@@ -263,8 +263,8 @@ static bool ceph_vxattrcb_snap_btime_exists(struct ceph_inode_info *ci)
return (ci->i_snap_btime.tv_sec != 0 || ci->i_snap_btime.tv_nsec != 0);
}
-static size_t ceph_vxattrcb_snap_btime(struct ceph_inode_info *ci, char *val,
- size_t size)
+static ssize_t ceph_vxattrcb_snap_btime(struct ceph_inode_info *ci, char *val,
+ size_t size)
{
return snprintf(val, size, "%lld.%09ld", ci->i_snap_btime.tv_sec,
ci->i_snap_btime.tv_nsec);
@@ -791,7 +791,7 @@ ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value,
struct ceph_inode_xattr *xattr;
struct ceph_vxattr *vxattr = NULL;
int req_mask;
- int err;
+ ssize_t err;
/* let's see if a virtual xattr was requested */
vxattr = ceph_match_vxattr(inode, name);
--
2.21.0
next prev parent reply other threads:[~2019-06-24 16:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-24 16:27 [PATCH v4 0/3] ceph: don't NULL terminate virtual xattrs Jeff Layton
2019-06-24 16:27 ` Jeff Layton [this message]
2019-06-24 16:27 ` [PATCH v4 2/3] ceph: return -ERANGE if virtual xattr value didn't fit in buffer Jeff Layton
2019-06-24 16:27 ` [PATCH v4 3/3] ceph: don't NULL terminate virtual xattrs Jeff Layton
2019-06-25 13:29 ` Yan, Zheng
2019-06-25 14:35 ` Ilya Dryomov
2019-06-25 14:49 ` Jeff Layton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190624162726.17413-2-jlayton@kernel.org \
--to=jlayton@kernel.org \
--cc=agruenba@redhat.com \
--cc=ceph-devel@vger.kernel.org \
--cc=idryomov@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=sage@redhat.com \
--cc=zyan@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).