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[patch 4/4] vfs: immutable inode checking cleanup

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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 <[email protected]>
CC: Michael Kerrisk <[email protected]>
Signed-off-by: Miklos Szeredi <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Miklos Szeredi 2008-07-01 15:01:29 +02:00 • committed by Al Viro
commit beb29e058c
3 changed files with 7 additions and 26 deletions
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5
fs/attr.c
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@ -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;