4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/ptlrpc/gss/gss_rawobj.c
33 * Author: Eric Mei <ericm@clusterfs.com>
36 #define DEBUG_SUBSYSTEM S_SEC
38 #include <linux/mutex.h>
41 #include <obd_class.h>
42 #include <obd_support.h>
43 #include <lustre_sec.h>
45 #include "gss_internal.h"
47 int rawobj_empty(rawobj_t *obj)
49 LASSERT(equi(obj->len, obj->data));
50 return (obj->len == 0);
53 int rawobj_alloc(rawobj_t *obj, char *buf, int len)
60 OBD_ALLOC_LARGE(obj->data, len);
65 memcpy(obj->data, buf, len);
71 void rawobj_free(rawobj_t *obj)
77 OBD_FREE_LARGE(obj->data, obj->len);
84 int rawobj_equal(rawobj_t *a, rawobj_t *b)
88 return (a->len == b->len &&
89 (!a->len || !memcmp(a->data, b->data, a->len)));
92 int rawobj_dup(rawobj_t *dest, rawobj_t *src)
98 OBD_ALLOC_LARGE(dest->data, dest->len);
103 memcpy(dest->data, src->data, dest->len);
109 int rawobj_serialize(rawobj_t *obj, __u32 **buf, __u32 *buflen)
117 len = cfs_size_round4(obj->len);
119 if (*buflen < 4 + len) {
120 CERROR("shorter buflen than needed: %u < %u\n",
125 *(*buf)++ = cpu_to_le32(obj->len);
126 memcpy(*buf, obj->data, obj->len);
128 *buflen -= (4 + len);
133 static int __rawobj_extract(rawobj_t *obj, __u32 **buf, __u32 *buflen,
134 int alloc, int local)
138 if (*buflen < sizeof(__u32)) {
139 CERROR("too short buflen: %u\n", *buflen);
143 obj->len = *(*buf)++;
145 obj->len = le32_to_cpu(obj->len);
146 *buflen -= sizeof(__u32);
153 len = local ? obj->len : cfs_size_round4(obj->len);
155 CERROR("shorter buflen than object size: %u < %u\n",
162 obj->data = (__u8 *) *buf;
164 OBD_ALLOC_LARGE(obj->data, obj->len);
166 CERROR("fail to alloc %u bytes\n", obj->len);
170 memcpy(obj->data, *buf, obj->len);
173 *((char **)buf) += len;
179 int rawobj_extract(rawobj_t *obj, __u32 **buf, __u32 *buflen)
181 return __rawobj_extract(obj, buf, buflen, 0, 0);
184 int rawobj_extract_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen)
186 return __rawobj_extract(obj, buf, buflen, 1, 0);
189 int rawobj_extract_local(rawobj_t *obj, __u32 **buf, __u32 *buflen)
191 return __rawobj_extract(obj, buf, buflen, 0, 1);
194 int rawobj_extract_local_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen)
196 return __rawobj_extract(obj, buf, buflen, 1, 1);
199 int rawobj_from_netobj(rawobj_t *rawobj, netobj_t *netobj)
201 rawobj->len = netobj->len;
202 rawobj->data = netobj->data;
206 int rawobj_from_netobj_alloc(rawobj_t *rawobj, netobj_t *netobj)
211 if (netobj->len == 0)
214 OBD_ALLOC_LARGE(rawobj->data, netobj->len);
215 if (rawobj->data == NULL)
218 rawobj->len = netobj->len;
219 memcpy(rawobj->data, netobj->data, netobj->len);
223 /****************************************
225 ****************************************/
227 int buffer_extract_bytes(const void **buf, __u32 *buflen,
228 void *res, __u32 reslen)
230 if (*buflen < reslen) {
231 CERROR("shorter buflen than expected: %u < %u\n",
236 memcpy(res, *buf, reslen);