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| author | Amir Goldstein <amir73il@gmail.com> | 2020-07-15 16:38:08 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-07-16 07:24:47 +0200 |
| commit | 4518dfcf761e3c44632855abcf433236cf7ab6c6 (patch) | |
| tree | ba420bc68574a246e3893a92b75188c91baa28a1 | |
| parent | 81a33c1ee941c3bb9ffc6bac8f676be13351344e (diff) | |
| download | linux-4518dfcf761e3c44632855abcf433236cf7ab6c6.tar.gz | |
ovl: fix lookup of indexed hardlinks with metacopy
We recently moved setting inode flag OVL_UPPERDATA to ovl_lookup().
When looking up an overlay dentry, upperdentry may be found by index
and not by name. In that case, we fail to read the metacopy xattr
and falsly set the OVL_UPPERDATA on the overlay inode.
This caused a regression in xfstest overlay/033 when run with
OVERLAY_MOUNT_OPTIONS="-o metacopy=on".
Fixes: 28166ab3c875 ("ovl: initialize OVL_UPPERDATA in ovl_lookup()")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
| -rw-r--r-- | fs/overlayfs/namei.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index 3cad68c3efb259..f7d4358db63785 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -1066,6 +1066,10 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, upperredirect = NULL; goto out_free_oe; } + err = ovl_check_metacopy_xattr(upperdentry); + if (err < 0) + goto out_free_oe; + uppermetacopy = err; } if (upperdentry || ctr) { |