1/*
2 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <openssl/crypto.h>
11#include "internal/cryptlib.h"
12
13#if !defined(OPENSSL_THREADS) || defined(CRYPTO_TDEBUG)
14
15# if defined(OPENSSL_SYS_UNIX)
16# include <sys/types.h>
17# include <unistd.h>
18# endif
19
20CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
21{
22 CRYPTO_RWLOCK *lock;
23
24 if ((lock = OPENSSL_zalloc(sizeof(unsigned int))) == NULL) {
25 /* Don't set error, to avoid recursion blowup. */
26 return NULL;
27 }
28
29 *(unsigned int *)lock = 1;
30
31 return lock;
32}
33
34int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
35{
36 if (!ossl_assert(*(unsigned int *)lock == 1))
37 return 0;
38 return 1;
39}
40
41int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
42{
43 if (!ossl_assert(*(unsigned int *)lock == 1))
44 return 0;
45 return 1;
46}
47
48int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)
49{
50 if (!ossl_assert(*(unsigned int *)lock == 1))
51 return 0;
52 return 1;
53}
54
55void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock) {
56 if (lock == NULL)
57 return;
58
59 *(unsigned int *)lock = 0;
60 OPENSSL_free(lock);
61
62 return;
63}
64
65int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
66{
67 if (*once != 0)
68 return 1;
69
70 init();
71 *once = 1;
72
73 return 1;
74}
75
76#define OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX 256
77
78static void *thread_local_storage[OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX];
79
80int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))
81{
82 static unsigned int thread_local_key = 0;
83
84 if (thread_local_key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
85 return 0;
86
87 *key = thread_local_key++;
88
89 thread_local_storage[*key] = NULL;
90
91 return 1;
92}
93
94void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)
95{
96 if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
97 return NULL;
98
99 return thread_local_storage[*key];
100}
101
102int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val)
103{
104 if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
105 return 0;
106
107 thread_local_storage[*key] = val;
108
109 return 1;
110}
111
112int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key)
113{
114 *key = OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX + 1;
115 return 1;
116}
117
118CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void)
119{
120 return 0;
121}
122
123int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b)
124{
125 return (a == b);
126}
127
128int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
129{
130 *val += amount;
131 *ret = *val;
132
133 return 1;
134}
135
136int openssl_init_fork_handlers(void)
137{
138 return 0;
139}
140
141int openssl_get_fork_id(void)
142{
143# if defined(OPENSSL_SYS_UNIX)
144 return getpid();
145# else
146 return 0;
147# endif
148}
149#endif
150