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authorKinglong Mee <kinglongmee@gmail.com>2017-02-05 22:02:01 +0800
committerJ. Bruce Fields <bfields@redhat.com>2017-02-17 16:25:59 -0500
commitc3821b3497aae1752cb2be72c32f650ef24c8820 (patch)
treed81308296a2279a0032c58e7313016f36bfdf659 /fs/nfsd
parentd6fc8821c2d2aba4cc18447a467f543e46e7367d (diff)
nfsd/idmap: return nfserr_inval for 0-length names
Tigran Mkrtchyan's new pynfs testcases for zero length principals fail: SATT16 st_setattr.testEmptyPrincipal : FAILURE Setting empty owner should return NFS4ERR_INVAL, instead got NFS4ERR_BADOWNER SATT17 st_setattr.testEmptyGroupPrincipal : FAILURE Setting empty owner_group should return NFS4ERR_INVAL, instead got NFS4ERR_BADOWNER This patch checks the principal and returns nfserr_inval directly. It could check after decoding in nfs4xdr.c, but it's simpler to do it in nfsd_map_xxxx. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4idmap.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index 5b20577dcdd2..6b9b6cca469f 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -628,6 +628,10 @@ nfsd_map_name_to_uid(struct svc_rqst *rqstp, const char *name, size_t namelen,
{
__be32 status;
u32 id = -1;
+
+ if (name == NULL || namelen == 0)
+ return nfserr_inval;
+
status = do_name_to_id(rqstp, IDMAP_TYPE_USER, name, namelen, &id);
*uid = make_kuid(&init_user_ns, id);
if (!uid_valid(*uid))
@@ -641,6 +645,10 @@ nfsd_map_name_to_gid(struct svc_rqst *rqstp, const char *name, size_t namelen,
{
__be32 status;
u32 id = -1;
+
+ if (name == NULL || namelen == 0)
+ return nfserr_inval;
+
status = do_name_to_id(rqstp, IDMAP_TYPE_GROUP, name, namelen, &id);
*gid = make_kgid(&init_user_ns, id);
if (!gid_valid(*gid))