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authorManeesh Soni <maneesh@in.ibm.com>2005-07-29 12:13:35 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-29 13:12:49 -0700
commitbc062b1b5c6bef4e3a29c7fda57967251d12beb0 (patch)
tree57dceb8371d0e83e7772b3deeb4a9e8dd2ae6b03
parent30d07a22a19329c89628a2057b0120245c482c9e (diff)
[PATCH] sysfs: fix sysfs_chmod_file
o sysfs_chmod_file() must update the new iattr field in sysfs_dirent else the mode change will not be persistent in case of inode evacuation from cache. Signed-off-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--fs/sysfs/file.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 335288b9be0..4013d7905e8 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -437,8 +437,8 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
{
struct dentry *dir = kobj->dentry;
struct dentry *victim;
- struct sysfs_dirent *sd;
- umode_t umode = (mode & S_IALLUGO) | S_IFREG;
+ struct inode * inode;
+ struct iattr newattrs;
int res = -ENOENT;
down(&dir->d_inode->i_sem);
@@ -446,13 +446,15 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
if (!IS_ERR(victim)) {
if (victim->d_inode &&
(victim->d_parent->d_inode == dir->d_inode)) {
- sd = victim->d_fsdata;
- attr->mode = mode;
- sd->s_mode = umode;
- victim->d_inode->i_mode = umode;
- dput(victim);
- res = 0;
+ inode = victim->d_inode;
+ down(&inode->i_sem);
+ newattrs.ia_mode = (mode & S_IALLUGO) |
+ (inode->i_mode & ~S_IALLUGO);
+ newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
+ res = notify_change(victim, &newattrs);
+ up(&inode->i_sem);
}
+ dput(victim);
}
up(&dir->d_inode->i_sem);