From: J. Bruce Fields <bfields@redhat.com>
Date: Tue, 19 Jul 2016 21:25:42 +0000 (-0400)
Subject: nfsd: remove redundant zero-length check from create
X-Git-Tag: v4.8-rc1~37^2~6
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=12391d07230ec7368269227207b961b2dcb34180;p=karo-tx-linux.git

nfsd: remove redundant zero-length check from create

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>
---

diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 4cd78ef4c95c..6722fe52ea15 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -251,9 +251,6 @@ 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;