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Subject[PATCH 5/6] union-mount: Call do_whiteout() on unlink and rmdir in unions
Date
From: Jan Blunck <jblunck@suse.de>

Call do_whiteout() when removing files and directories from a union
mounted file system.

Signed-off-by: Valerie Aurora <vaurora@redhat.com>
---
fs/namei.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c
index 85d95fc..9797074 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2670,6 +2670,10 @@ static long do_rmdir(int dfd, const char __user *pathname)
error = mnt_want_write(nd.path.mnt);
if (error)
goto exit3;
+ if (IS_UNIONED_DIR(&nd.path)) {
+ error = do_whiteout(&nd, &path, 1);
+ goto exit4;
+ }
error = security_path_rmdir(&nd.path, path.dentry);
if (error)
goto exit4;
@@ -2758,6 +2762,10 @@ static long do_unlinkat(int dfd, const char __user *pathname)
error = mnt_want_write(nd.path.mnt);
if (error)
goto exit2;
+ if (IS_UNIONED_DIR(&nd.path)) {
+ error = do_whiteout(&nd, &path, 0);
+ goto exit3;
+ }
error = security_path_unlink(&nd.path, path.dentry);
if (error)
goto exit3;
--
1.5.6.5


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