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authorMiklos Szeredi <mszeredi@suse.cz>2008-07-01 15:01:29 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2008-07-26 20:53:28 -0400
commitbeb29e058c35ab69e96e455a12ccf7505f6de425 (patch)
tree0da9869b7e0422c34423a02216db1a758a55a95a /fs/attr.c
parentb1da47e29e467f1ec36dc78d009bfb109fd533c7 (diff)
downloadlinux-beb29e058c35ab69e96e455a12ccf7505f6de425.tar.gz
[patch 4/4] vfs: immutable inode checking cleanup
Move the immutable and append-only checks from chmod, chown and utimes into notify_change(). Checks for immutable and append-only files are always performed by the VFS and not by the filesystem (see permission() and may_...() in namei.c), so these belong in notify_change(), and not in inode_change_ok(). This should be completely equivalent. CC: Ulrich Drepper <drepper@redhat.com> CC: Michael Kerrisk <mtk.manpages@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/attr.c')
-rw-r--r--fs/attr.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/attr.c b/fs/attr.c
index 765fc75fab3..26c71ba1eed 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -108,6 +108,11 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
struct timespec now;
unsigned int ia_valid = attr->ia_valid;
+ if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_TIMES_SET)) {
+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+ return -EPERM;
+ }
+
now = current_fs_time(inode->i_sb);
attr->ia_ctime = now;