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authorGreg Kroah-Hartman <gregkh@suse.de>2007-09-13 11:53:13 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 23:51:09 +0200
commit5c3e8964ce87477a12e3e9edc3742156a3929a74 (patch)
treefa9f43c11b7eea40d8758a638b8452ae5a1e724f /fs/sysfs
parentPTY: add kernel parameter to overwrite legacy pty count (diff)
downloadlinux-5c3e8964ce87477a12e3e9edc3742156a3929a74.tar.xz
linux-5c3e8964ce87477a12e3e9edc3742156a3929a74.zip
sysfs: spit a warning to users when they try to create a duplicate sysfs file
We want to let people know when we create a duplicate sysfs file, as they need to fix up their code. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs')
-rw-r--r--fs/sysfs/dir.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index da4bb66a610c..5d95aa8e23c6 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -428,8 +428,12 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
*/
int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
{
- if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
+ if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) {
+ printk(KERN_WARNING "sysfs: duplicate filename '%s' "
+ "can not be created\n", sd->s_name);
+ WARN_ON(1);
return -EEXIST;
+ }
sd->s_parent = sysfs_get(acxt->parent_sd);