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Subject[PATCH 23/38] 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 3f969af..c17693f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2595,6 +2595,10 @@ static long do_rmdir(int dfd, const char __user *pathname)
error = security_path_rmdir(&nd.path, path.dentry);
if (error)
goto exit4;
+ if (IS_DIR_UNIONED(nd.path.dentry)) {
+ error = do_whiteout(&nd, &path, 1);
+ goto exit4;
+ }
error = vfs_rmdir(nd.path.dentry->d_inode, path.dentry);
exit4:
mnt_drop_write(nd.path.mnt);
@@ -2684,6 +2688,10 @@ static long do_unlinkat(int dfd, const char __user *pathname)
error = security_path_unlink(&nd.path, path.dentry);
if (error)
goto exit3;
+ if (IS_DIR_UNIONED(nd.path.dentry)) {
+ error = do_whiteout(&nd, &path, 0);
+ goto exit3;
+ }
error = vfs_unlink(nd.path.dentry->d_inode, path.dentry);
exit3:
mnt_drop_write(nd.path.mnt);
--
1.6.3.3


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