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  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Sat, 17 Nov 2018 17:01:00 +0800
From:   Chengguang Xu <cgxu519@....com>
To:     jack@...e.com
Cc:     linux-ext4@...r.kernel.org, Chengguang Xu <cgxu519@....com>
Subject: [PATCH] ext2: compare old and new mode before setting update_mode flag

If new mode is the same as old mode we don't have to reset
inode mode in the rest of the code, so compare old and new
mode before setting update_mode flag.

Signed-off-by: Chengguang Xu <cgxu519@....com>
---
 fs/ext2/acl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
index cf4c77f8dd08..f4dd728393c8 100644
--- a/fs/ext2/acl.c
+++ b/fs/ext2/acl.c
@@ -226,7 +226,8 @@ ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 		error = posix_acl_update_mode(inode, &mode, &acl);
 		if (error)
 			return error;
-		update_mode = 1;
+		if (mode != inode->i_mode)
+			update_mode = 1;
 	}
 	error = __ext2_set_acl(inode, acl, type);
 	if (!error && update_mode) {
-- 
2.17.2

Powered by blists - more mailing lists