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| author | Amir Goldstein <amir73il@gmail.com> | 2018-01-03 18:34:45 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2018-01-24 10:18:19 +0100 |
| commit | 9678e630305724487f1fc101d6b83c383ff9cc90 (patch) | |
| tree | 553bc1c4c744236395c6eb0613b69fab1d4903b6 /fs/overlayfs/overlayfs.h | |
| parent | ovl: take mnt_want_write() for removing impure xattr (diff) | |
| download | linux-9678e630305724487f1fc101d6b83c383ff9cc90.tar.xz linux-9678e630305724487f1fc101d6b83c383ff9cc90.zip | |
ovl: fix inconsistent d_ino for legacy merge dir
For a merge dir that was copied up before v4.12 or that was hand crafted
offline (e.g. mkdir {upper/lower}/dir), upper dir does not contain the
'trusted.overlay.origin' xattr. In that case, stat(2) on the merge dir
returns the lower dir st_ino, but getdents(2) returns the upper dir d_ino.
After this change, on merge dir lookup, missing origin xattr on upper
dir will be fixed and 'impure' xattr will be fixed on parent of the legacy
merge dir.
Suggested-by: zhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/overlayfs/overlayfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index b489099ccd49..d1cfa69c98b5 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -322,3 +322,5 @@ int ovl_copy_up_flags(struct dentry *dentry, int flags); int ovl_copy_xattr(struct dentry *old, struct dentry *new); int ovl_set_attr(struct dentry *upper, struct kstat *stat); struct ovl_fh *ovl_encode_fh(struct dentry *lower, bool is_upper); +int ovl_set_origin(struct dentry *dentry, struct dentry *lower, + struct dentry *upper); |