Merge tag 'pull-la-20220805' of https://gitlab.com/rth7680/qemu into staging
[qemu.git] / crypto / init.c
1 /*
2 * QEMU Crypto initialization
3 *
4 * Copyright (c) 2015 Red Hat, Inc.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 *
19 */
20
21 #include "qemu/osdep.h"
22 #include "crypto/init.h"
23 #include "qapi/error.h"
24 #include "qemu/thread.h"
25
26 #ifdef CONFIG_GNUTLS
27 #include <gnutls/gnutls.h>
28 #include <gnutls/crypto.h>
29 #endif
30
31 #ifdef CONFIG_GCRYPT
32 #include <gcrypt.h>
33 #endif
34
35 #include "crypto/random.h"
36
37 /* #define DEBUG_GNUTLS */
38 #ifdef DEBUG_GNUTLS
39 static void qcrypto_gnutls_log(int level, const char *str)
40 {
41 fprintf(stderr, "%d: %s", level, str);
42 }
43 #endif
44
45 int qcrypto_init(Error **errp)
46 {
47 #ifdef CONFIG_GNUTLS
48 int ret;
49 ret = gnutls_global_init();
50 if (ret < 0) {
51 error_setg(errp,
52 "Unable to initialize GNUTLS library: %s",
53 gnutls_strerror(ret));
54 return -1;
55 }
56 #ifdef DEBUG_GNUTLS
57 gnutls_global_set_log_level(10);
58 gnutls_global_set_log_function(qcrypto_gnutls_log);
59 #endif
60 #endif
61
62 #ifdef CONFIG_GCRYPT
63 if (!gcry_check_version(NULL)) {
64 error_setg(errp, "Unable to initialize gcrypt");
65 return -1;
66 }
67 gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
68 #endif
69
70 if (qcrypto_random_init(errp) < 0) {
71 return -1;
72 }
73
74 return 0;
75 }