linux-kernel - [ 049/167] nfsd: fix b0rken error value for setattr on read-only mount

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

Message-Id: <20120509055036.518520916@decadent.org.uk>
Date:	Wed, 09 May 2012 06:51:18 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Al Viro <viro@...iv.linux.org.uk>,
	Jonathan Nieder <jrnieder@...il.com>
Subject: [ 049/167] nfsd: fix b0rken error value for setattr on read-only mount

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Al Viro <viro@...iv.linux.org.uk>

commit 96f6f98501196d46ce52c2697dd758d9300c63f5 upstream.

..._want_write() returns -EROFS on failure, _not_ an NFS error value.

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Signed-off-by: Jonathan Nieder <jrnieder@...il.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/nfsd/nfs4proc.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -812,6 +812,7 @@ nfsd4_setattr(struct svc_rqst *rqstp, st
 	      struct nfsd4_setattr *setattr)
 {
 	__be32 status = nfs_ok;
+	int err;
 
 	if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
 		nfs4_lock_state();
@@ -823,9 +824,9 @@ nfsd4_setattr(struct svc_rqst *rqstp, st
 			return status;
 		}
 	}
-	status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
-	if (status)
-		return status;
+	err = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
+	if (err)
+		return nfserrno(err);
 	status = nfs_ok;
 
 	status = check_attr_support(rqstp, cstate, setattr->sa_bmval,


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/