vfs: update ctime when changing the file's permission by setfacl

generic_acl_set didn't update the ctime of the file when its permission was
changed.

Steps to reproduce:
 # touch aaa
 # stat -c %Z aaa
 1275289822
 # setfacl -m  'u::x,g::x,o::x' aaa
 # stat -c %Z aaa
 1275289822                         <- unchanged

But, according to the spec of the ctime, vfs must update it.

Port of ext3 patch by Miao Xie <miaox@cn.fujitsu.com>.

CC: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/generic_acl.c b/fs/generic_acl.c
index 99800e564157ed5d3bb78b6e80c6d7f5b7d32051..6bc9e3a5a693b0fa2d5d8f09349f42b9d44ea72f 100644 (file)
--- a/fs/generic_acl.c
+++ b/fs/generic_acl.c
@@ -94,6 +94,7 @@ generic_acl_set(struct dentry *dentry, const char *name, const void *value,
                        if (error < 0)
                                goto failed;
                        inode->i_mode = mode;
+                       inode->i_ctime = CURRENT_TIME;
                        if (error == 0) {
                                posix_acl_release(acl);
                                acl = NULL;