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.sun.com/software/products/lustre/docs/GPLv2.pdf
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/ptlrpc/gss/gss_rawobj.c
38 * Author: Eric Mei <ericm@clusterfs.com>
41 #define DEBUG_SUBSYSTEM S_SEC
43 #include <linux/mutex.h>
46 #include <obd_class.h>
47 #include <obd_support.h>
48 #include <lustre_sec.h>
50 #include "gss_internal.h"
52 int rawobj_empty(rawobj_t *obj)
54 LASSERT(equi(obj->len, obj->data));
55 return (obj->len == 0);
58 int rawobj_alloc(rawobj_t *obj, char *buf, int len)
65 OBD_ALLOC_LARGE(obj->data, len);
70 memcpy(obj->data, buf, len);
76 void rawobj_free(rawobj_t *obj)
82 OBD_FREE_LARGE(obj->data, obj->len);
89 int rawobj_equal(rawobj_t *a, rawobj_t *b)
93 return (a->len == b->len &&
94 (!a->len || !memcmp(a->data, b->data, a->len)));
97 int rawobj_dup(rawobj_t *dest, rawobj_t *src)
101 dest->len = src->len;
103 OBD_ALLOC_LARGE(dest->data, dest->len);
108 memcpy(dest->data, src->data, dest->len);
114 int rawobj_serialize(rawobj_t *obj, __u32 **buf, __u32 *buflen)
122 len = cfs_size_round4(obj->len);
124 if (*buflen < 4 + len) {
125 CERROR("buflen %u < %u\n", *buflen, 4 + len);
129 *(*buf)++ = cpu_to_le32(obj->len);
130 memcpy(*buf, obj->data, obj->len);
132 *buflen -= (4 + len);
137 static int __rawobj_extract(rawobj_t *obj, __u32 **buf, __u32 *buflen,
138 int alloc, int local)
142 if (*buflen < sizeof(__u32)) {
143 CERROR("buflen %u\n", *buflen);
147 obj->len = *(*buf)++;
149 obj->len = le32_to_cpu(obj->len);
150 *buflen -= sizeof(__u32);
157 len = local ? obj->len : cfs_size_round4(obj->len);
159 CERROR("buflen %u < %u\n", *buflen, len);
165 obj->data = (__u8 *) *buf;
167 OBD_ALLOC_LARGE(obj->data, obj->len);
169 CERROR("fail to alloc %u bytes\n", obj->len);
173 memcpy(obj->data, *buf, obj->len);
176 *((char **)buf) += len;
182 int rawobj_extract(rawobj_t *obj, __u32 **buf, __u32 *buflen)
184 return __rawobj_extract(obj, buf, buflen, 0, 0);
187 int rawobj_extract_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen)
189 return __rawobj_extract(obj, buf, buflen, 1, 0);
192 int rawobj_extract_local(rawobj_t *obj, __u32 **buf, __u32 *buflen)
194 return __rawobj_extract(obj, buf, buflen, 0, 1);
197 int rawobj_extract_local_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen)
199 return __rawobj_extract(obj, buf, buflen, 1, 1);
202 int rawobj_from_netobj(rawobj_t *rawobj, netobj_t *netobj)
204 rawobj->len = netobj->len;
205 rawobj->data = netobj->data;
209 int rawobj_from_netobj_alloc(rawobj_t *rawobj, netobj_t *netobj)
214 if (netobj->len == 0)
217 OBD_ALLOC_LARGE(rawobj->data, netobj->len);
218 if (rawobj->data == NULL)
221 rawobj->len = netobj->len;
222 memcpy(rawobj->data, netobj->data, netobj->len);
226 /****************************************
228 ****************************************/
230 int buffer_extract_bytes(const void **buf, __u32 *buflen,
231 void *res, __u32 reslen)
233 if (*buflen < reslen) {
234 CERROR("buflen %u < %u\n", *buflen, reslen);
238 memcpy(res, *buf, reslen);