From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Sat, 2 Apr 2011 15:11:50 +0000 (+0900)
Subject: TOMOYO: Don't add / for allow_unmount permission check.
X-Git-Tag: firefly_0821_release~7613^2~1299^2~1^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e4f5f26d8336318a5aa0858223c81cf29fcf5f68;p=firefly-linux-kernel-4.4.55.git

TOMOYO: Don't add / for allow_unmount permission check.

"mount --bind /path/to/file1 /path/to/file2" is legal. Therefore,
"umount /path/to/file2" is also legal. Do not automatically append trailing '/'
if pathname to be unmounted does not end with '/'.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
---

diff --git a/security/tomoyo/file.c b/security/tomoyo/file.c
index cb09f1fce910..d64e8ecb6fb3 100644
--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -1011,7 +1011,6 @@ int tomoyo_path_perm(const u8 operation, struct path *path)
 		break;
 	case TOMOYO_TYPE_RMDIR:
 	case TOMOYO_TYPE_CHROOT:
-	case TOMOYO_TYPE_UMOUNT:
 		tomoyo_add_slash(&buf);
 		break;
 	}