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| author | Konstantin Khlebnikov <koct9i@gmail.com> | 2016-01-31 16:21:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-16 18:43:01 +0300 |
| commit | b3600dd6476cd5ce390991860789163aa109f490 (patch) | |
| tree | 42af6f52a96f9618f5937b074d7baf65331d59cc | |
| parent | 0b7f12be0d39e42cce88aa6b78a968d389273d8c (diff) | |
| download | linux-b3600dd6476cd5ce390991860789163aa109f490.tar.xz | |
ovl: copy new uid/gid into overlayfs runtime inode
commit b81de061fa59f17d2730aabb1b84419ef3913810 upstream.
Overlayfs must update uid/gid after chown, otherwise functions
like inode_owner_or_capable() will check user against stale uid.
Catched by xfstests generic/087, it chowns file and calls utimes.
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/overlayfs/inode.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index b29036aa8d7c..05ac9a95e881 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -65,6 +65,8 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr) mutex_lock(&upperdentry->d_inode->i_mutex); err = notify_change(upperdentry, attr, NULL); + if (!err) + ovl_copyattr(upperdentry->d_inode, dentry->d_inode); mutex_unlock(&upperdentry->d_inode->i_mutex); } ovl_drop_write(dentry); |