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From: "J. Bruce Fields" <bfields@redhat.com>
To: Oleg Drokin <green@linuxhacker.ru>
Cc: Jeff Layton <jlayton@poochiereds.net>,
	linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org,
	"J. Bruce Fields" <bfields@fieldses.org>,
	"J. Bruce Fields" <bfields@redhat.com>
Subject: [PATCH 2/7] nfsd: remove redundant zero-length check from create
Date: Fri, 22 Jul 2016 13:48:51 -0400	[thread overview]
Message-ID: <1469209736-6490-3-git-send-email-bfields@redhat.com> (raw)
In-Reply-To: <1469209736-6490-1-git-send-email-bfields@redhat.com>

From: "J. Bruce Fields" <bfields@redhat.com>

lookup_one_len already has this check.

The only effect of this patch is to return access instead of perm in the
0-length-filename case.  I actually prefer nfserr_perm (or _inval?), but
I doubt anyone cares.

The isdotent check seems redundant too, but I worry that some client
might actually care about that strange nfserr_exist error.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfsproc.c | 3 ---
 fs/nfsd/vfs.c     | 3 ---
 2 files changed, 6 deletions(-)

diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 409fdde8e95d..c30b12388bf6 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -250,9 +250,6 @@ nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp,
 
 	/* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
 
-	nfserr = nfserr_acces;
-	if (!argp->len)
-		goto done;
 	nfserr = nfserr_exist;
 	if (isdotent(argp->name, argp->len))
 		goto done;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index fda4f86161f8..fba8e7e521e0 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1154,9 +1154,6 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
 	__be32		err2;
 	int		host_err;
 
-	err = nfserr_perm;
-	if (!flen)
-		goto out;
 	err = nfserr_exist;
 	if (isdotent(fname, flen))
 		goto out;
-- 
2.7.4


  parent reply	other threads:[~2016-07-22 17:49 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-08  1:47 [PATCH] nfsd: Make creates return EEXIST correctly instead of EPERM Oleg Drokin
2016-07-08 11:02 ` Jeff Layton
2016-07-08 15:14   ` Oleg Drokin
2016-07-08 15:53     ` Jeff Layton
2016-07-08 15:59       ` Oleg Drokin
2016-07-08 16:17         ` Jeff Layton
2016-07-08 16:28           ` Oleg Drokin
2016-07-09  2:52         ` Al Viro
2016-07-09  2:58           ` Oleg Drokin
2016-07-09  3:13             ` Al Viro
2016-07-08 16:04       ` J. Bruce Fields
2016-07-08 16:16         ` Oleg Drokin
2016-07-08 20:49           ` J. Bruce Fields
2016-07-08 21:47             ` Oleg Drokin
2016-07-08 21:47               ` Oleg Drokin
2016-07-09  3:10               ` Al Viro
2016-07-09  3:41                 ` Oleg Drokin
2016-07-13 19:00                   ` J. Bruce Fields
2016-07-08 20:54 ` J. Bruce Fields
2016-07-08 21:53   ` Oleg Drokin
2016-07-21 20:34     ` J. Bruce Fields
2016-07-21 20:37       ` Oleg Drokin
2016-07-22  1:57         ` J. Bruce Fields
2016-07-22  6:35           ` Oleg Drokin
2016-07-22 10:55             ` J. Bruce Fields
2016-07-22 15:13               ` Oleg Drokin
2016-07-22 17:48                 ` J. Bruce Fields
2016-07-22 17:48                   ` [PATCH 1/7] nfsd: Make creates return EEXIST instead of EACCES J. Bruce Fields
2016-07-22 17:48                   ` J. Bruce Fields [this message]
2016-07-22 17:48                   ` [PATCH 3/7] nfsd: remove redundant i_lookup check J. Bruce Fields
2016-07-24  0:22                     ` Al Viro
2016-07-24 12:10                       ` J. Bruce Fields
2016-07-24 14:23                         ` Al Viro
2016-07-24 20:21                           ` J. Bruce Fields
2016-07-22 17:48                   ` [PATCH 4/7] nfsd: reorganize nfsd_create J. Bruce Fields
2016-07-22 17:48                   ` [PATCH 5/7] nfsd: remove unnecessary positive-dentry check J. Bruce Fields
2016-07-22 17:48                   ` [PATCH 6/7] nfsd: clean up bad-type check in nfsd_create_locked J. Bruce Fields
2016-07-22 17:48                   ` [PATCH 7/7] nfsd: drop unnecessary MAY_EXEC check from create J. Bruce Fields

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