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From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@ZenIV.linux.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: [PATCH 1/4] 9p: do no return 0 from ->check_acl without actually checking
Date: Sat, 23 Jul 2011 17:36:38 +0200	[thread overview]
Message-ID: <20110723153638.GA10887@lst.de> (raw)
In-Reply-To: <20110723153621.GA10832@lst.de>

If we do not want to use ACLs we at least need to perform normal Unix
permission checks.  From the comment I'm not quite sure that's what
is intended, but if 0p wants to do permission checks entirely on the
server it needs to do so in ->permission, not in ->check_acl.

Signed-off-by: Christoph Hellwig <hch@lst.de>

Index: linux-2.6/fs/9p/acl.c
===================================================================
--- linux-2.6.orig/fs/9p/acl.c	2011-07-23 16:39:19.200749795 +0200
+++ linux-2.6/fs/9p/acl.c	2011-07-23 16:39:24.690749763 +0200
@@ -108,7 +108,7 @@ int v9fs_check_acl(struct inode *inode,
 		 * On access = client  and acl = on mode get the acl
 		 * values from the server
 		 */
-		return 0;
+		return -EAGAIN;
 	}
 	acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS);
 

  reply	other threads:[~2011-07-23 15:36 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-23 15:36 [PATCH 0/4] more ACL updates Christoph Hellwig
2011-07-23 15:36 ` Christoph Hellwig [this message]
2011-07-23 15:49   ` [PATCH 1/4] 9p: do no return 0 from ->check_acl without actually checking Al Viro
2011-07-25  6:40   ` Aneesh Kumar K.V
2011-07-23 15:36 ` [PATCH 2/4] xfs: cache negative ACLs if there is no attribute fork Christoph Hellwig
2011-07-23 15:37 ` [PATCH 3/4] reiserfs: cache negative ACLs for v1 stat format Christoph Hellwig
2011-07-23 15:37 ` [PATCH 4/4] fs: take the ACL checks to common code Christoph Hellwig
2011-07-23 15:56   ` Linus Torvalds
2011-07-23 16:00     ` Christoph Hellwig
2011-07-23 16:15       ` Al Viro
2011-07-24 13:07         ` Christoph Hellwig

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