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| author | Kinglong Mee <kinglongmee@gmail.com> | 2017-02-05 22:02:01 +0800 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2017-02-17 16:25:59 -0500 |
| commit | c3821b3497aae1752cb2be72c32f650ef24c8820 (patch) | |
| tree | d81308296a2279a0032c58e7313016f36bfdf659 /fs/nfsd | |
| parent | d6fc8821c2d2aba4cc18447a467f543e46e7367d (diff) | |
| download | linux-c3821b3497aae1752cb2be72c32f650ef24c8820.tar.bz2 | |
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.c | 8 |
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)) |