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| author | Amir Goldstein <amir73il@gmail.com> | 2017-06-21 15:28:42 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-07-04 22:03:17 +0200 |
| commit | 415543d5c64fe490b4b6a7e21c3ea2f1310c442f (patch) | |
| tree | fe8d24c2f1b441845f29eece566cbd45be00d3ee /fs/overlayfs/super.c | |
| parent | 359f392ca53e9122cafa5fc103545558b0b85d54 (diff) | |
| download | linux-stable-415543d5c64fe490b4b6a7e21c3ea2f1310c442f.tar.gz linux-stable-415543d5c64fe490b4b6a7e21c3ea2f1310c442f.tar.bz2 linux-stable-415543d5c64fe490b4b6a7e21c3ea2f1310c442f.zip | |
ovl: cleanup bad and stale index entries on mount
Bad index entries are entries whose name does not match the
origin file handle stored in trusted.overlay.origin xattr.
Bad index entries could be a result of a system power off in
the middle of copy up.
Stale index entries are entries whose origin file handle is
stale. Stale index entries could be a result of copying layers
or removing lower entries while the overlay is not mounted.
The case of copying layers should be detected earlier by the
verification of upper root dir origin and index dir origin.
Both bad and stale index entries are detected and removed
on mount.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/super.c')
| -rw-r--r-- | fs/overlayfs/super.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index a313af25dac2..791581c370f5 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1068,6 +1068,12 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) upperpath.dentry, true, true); if (err) pr_err("overlayfs: failed to verify index dir origin\n"); + + /* Cleanup bad/stale index entries */ + if (!err) + err = ovl_indexdir_cleanup(ufs->indexdir, + ufs->upper_mnt, + stack, numlower); } if (err || !ufs->indexdir) pr_warn("overlayfs: try deleting index dir or mounting with '-o index=off' to disable inodes index.\n"); |