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[PATCH] sysfs: fix problem with duplicate sysfs directories and files

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The following patch checks for existing sysfs_dirent before
preparing new one while creating sysfs directories and files.

Signed-off-by: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Maneesh Soni
2006-03-09 19:40:14 +05:30
committed by Greg Kroah-Hartman
parent 22f98c0cd7
commit c516865cfb
4 changed files with 39 additions and 5 deletions
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6
fs/sysfs/file.c
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@@ -361,10 +361,12 @@ int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type)
{
struct sysfs_dirent * parent_sd = dir->d_fsdata;
umode_t mode = (attr->mode & S_IALLUGO) | S_IFREG;
int error = 0;
int error = -EEXIST;
mutex_lock(&dir->d_inode->i_mutex);
error = sysfs_make_dirent(parent_sd, NULL, (void *) attr, mode, type);
if (!sysfs_dirent_exist(parent_sd, attr->name))
error = sysfs_make_dirent(parent_sd, NULL, (void *)attr,
mode, type);
mutex_unlock(&dir->d_inode->i_mutex);
return error;