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| author | Miklos Szeredi <mszeredi@redhat.com> | 2017-07-04 22:03:18 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-07-04 22:03:18 +0200 |
| commit | 55acc6618259c8ff0a400a131f0f4b613e96010a (patch) | |
| tree | 82f73eccca8d417ec8c77ad1b02dd28748c5c456 /fs/overlayfs/namei.c | |
| parent | 23f0ab13eaa69b4a351184cbec448be2aad3a3a9 (diff) | |
| download | linux-55acc6618259c8ff0a400a131f0f4b613e96010a.tar.gz linux-55acc6618259c8ff0a400a131f0f4b613e96010a.tar.bz2 linux-55acc6618259c8ff0a400a131f0f4b613e96010a.zip | |
ovl: add flag for upper in ovl_entry
For rename, we need to ensure that an upper alias exists for hard links
before attempting the operation. Introduce a flag in ovl_entry to track
the state of the upper alias.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/namei.c')
| -rw-r--r-- | fs/overlayfs/namei.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index f7fb0c919419..2d8b6292fe21 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -674,7 +674,9 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, memcpy(oe->lowerstack, stack, sizeof(struct path) * ctr); dentry->d_fsdata = oe; - if (index && !upperdentry) + if (upperdentry) + ovl_dentry_set_upper_alias(dentry); + else if (index) upperdentry = dget(index); if (upperdentry || ctr) { |