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authorTejun Heo <tj@kernel.org>2013-10-24 11:49:11 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-29 15:12:07 -0700
commitd1c1459e45944e336a968acce1e459c9effcde47 (patch)
tree0378046afd671158c2fde7184ee9f851944c395c /fs/sysfs/dir.c
parent7eed6ecb0785681892ab1fe47188fc981241cfd0 (diff)
downloadlinux-d1c1459e45944e336a968acce1e459c9effcde47.tar.bz2
sysfs: separate out dup filename warning into a separate function
Separate out sysfs_warn_dup() out of sysfs_add_one(). This will help separating out the core sysfs functionalities into kernfs so that it can be used by non-sysfs users too. This doesn't make any functional changes. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/sysfs/dir.c')
-rw-r--r--fs/sysfs/dir.c30
1 files changed, 19 insertions, 11 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 486238d06021..de47ed32d5c7 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -470,6 +470,23 @@ static char *sysfs_pathname(struct sysfs_dirent *sd, char *path)
return path;
}
+void sysfs_warn_dup(struct sysfs_dirent *parent, const char *name)
+{
+ char *path;
+
+ path = kzalloc(PATH_MAX, GFP_KERNEL);
+ if (path) {
+ sysfs_pathname(parent, path);
+ strlcat(path, "/", PATH_MAX);
+ strlcat(path, name, PATH_MAX);
+ }
+
+ WARN(1, KERN_WARNING "sysfs: cannot create duplicate filename '%s'\n",
+ path ? path : name);
+
+ kfree(path);
+}
+
/**
* sysfs_add_one - add sysfs_dirent to parent
* @acxt: addrm context to use
@@ -497,18 +514,9 @@ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd,
int ret;
ret = __sysfs_add_one(acxt, sd, parent_sd);
- if (ret == -EEXIST) {
- char *path = kzalloc(PATH_MAX, GFP_KERNEL);
- WARN(1, KERN_WARNING
- "sysfs: cannot create duplicate filename '%s'\n",
- (path == NULL) ? sd->s_name
- : (sysfs_pathname(parent_sd, path),
- strlcat(path, "/", PATH_MAX),
- strlcat(path, sd->s_name, PATH_MAX),
- path));
- kfree(path);
- }
+ if (ret == -EEXIST)
+ sysfs_warn_dup(parent_sd, sd->s_name);
return ret;
}