linux-kernel - [PATCH] ecryptfs: add rename flag support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20210226210125.77692-1-jeffrey.mitchell@starlab.io>
Date:   Fri, 26 Feb 2021 15:01:25 -0600
From:   Jeffrey Mitchell <jeffrey.mitchell@...rlab.io>
To:     Tyler Hicks <code@...icks.com>
Cc:     ecryptfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jeffrey Mitchell <jeffrey.mitchell@...rlab.io>
Subject: [PATCH] ecryptfs: add rename flag support

Currently, ecryptfs_rename() returns EINVAL if any flags are passed in.
However, if the lower filesystem has support for those flags, it doesn't
require any additional complexity to take advantage of it in eCryptfs.

Add flag support to ecryptfs_rename() by passing them through to the lower
filesystem

Signed-off-by: Jeffrey Mitchell <jeffrey.mitchell@...rlab.io>
---
 fs/ecryptfs/inode.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 18e9285fbb4c..647afc2fd754 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -601,9 +601,6 @@ ecryptfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
 	struct inode *target_inode;
 	struct renamedata rd = {};
 
-	if (flags)
-		return -EINVAL;
-
 	lower_old_dir_dentry = ecryptfs_dentry_to_lower(old_dentry->d_parent);
 	lower_new_dir_dentry = ecryptfs_dentry_to_lower(new_dentry->d_parent);
 
@@ -636,6 +633,7 @@ ecryptfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
 	rd.new_mnt_userns	= &init_user_ns;
 	rd.new_dir		= d_inode(lower_new_dir_dentry);
 	rd.new_dentry		= lower_new_dentry;
+	rd.flags		= flags;
 	rc = vfs_rename(&rd);
 	if (rc)
 		goto out_lock;
-- 
2.25.1