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authorMiklos Szeredi <mszeredi@redhat.com>2016-12-16 11:02:56 +0100
committerMiklos Szeredi <mszeredi@redhat.com>2016-12-16 11:02:56 +0100
commit02b69b284cd7815239fabfe895bfef9a9eb5a3ce (patch)
tree1e17c647edb7d60e175a154b3fb9127454c03e3a /fs/overlayfs/super.c
parente28edc46b8e29d2a4c10263cd7769e657582fff4 (diff)
downloadlinux-02b69b284cd7815239fabfe895bfef9a9eb5a3ce.tar.bz2
ovl: lookup redirects
If a directory has the "trusted.overlay.redirect" xattr, it means that the value of the xattr should be used to find the underlying directory on the next lower layer. The redirect may be relative or absolute. Absolute redirects begin with a slash. A relative redirect means: instead of the current dentry's name use the value of the redirect to find the directory in the next lower layer. Relative redirects must not contain a slash. An absolute redirect means: look up the directory relative to the root of the overlay using the value of the redirect in the next lower layer. Redirects work on lower layers as well. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/super.c')
-rw-r--r--fs/overlayfs/super.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index aadb25413e6e..4e44e865b716 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -37,6 +37,7 @@ static void ovl_dentry_release(struct dentry *dentry)
unsigned int i;
dput(oe->__upperdentry);
+ kfree(oe->redirect);
for (i = 0; i < oe->numlower; i++)
dput(oe->lowerstack[i].dentry);
kfree_rcu(oe, rcu);