A local copy of OpenSSL from GitHub
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/*
* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/crypto.h>
#include "internal/cryptlib.h"
#if !defined(OPENSSL_THREADS) || defined(CRYPTO_TDEBUG)
# if defined(OPENSSL_SYS_UNIX)
# include <sys/types.h>
# include <unistd.h>
# endif
CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
{
CRYPTO_RWLOCK *lock;
if ((lock = OPENSSL_zalloc(sizeof(unsigned int))) == NULL) {
/* Don't set error, to avoid recursion blowup. */
return NULL;
}
*(unsigned int *)lock = 1;
return lock;
}
int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
{
if (!ossl_assert(*(unsigned int *)lock == 1))
return 0;
return 1;
}
int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
{
if (!ossl_assert(*(unsigned int *)lock == 1))
return 0;
return 1;
}
int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)
{
if (!ossl_assert(*(unsigned int *)lock == 1))
return 0;
return 1;
}
void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock) {
if (lock == NULL)
return;
*(unsigned int *)lock = 0;
OPENSSL_free(lock);
return;
}
int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
{
if (*once != 0)
return 1;
init();
*once = 1;
return 1;
}
#define OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX 256
static void *thread_local_storage[OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX];
int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))
{
static unsigned int thread_local_key = 0;
if (thread_local_key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
return 0;
*key = thread_local_key++;
thread_local_storage[*key] = NULL;
return 1;
}
void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)
{
if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
return NULL;
return thread_local_storage[*key];
}
int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val)
{
if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
return 0;
thread_local_storage[*key] = val;
return 1;
}
int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key)
{
*key = OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX + 1;
return 1;
}
CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void)
{
return 0;
}
int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b)
{
return (a == b);
}
int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
{
*val += amount;
*ret = *val;
return 1;
}
int CRYPTO_atomic_or(uint64_t *val, uint64_t op, uint64_t *ret,
CRYPTO_RWLOCK *lock)
{
*val |= op;
*ret = *val;
return 1;
}
int CRYPTO_atomic_load(uint64_t *val, uint64_t *ret, CRYPTO_RWLOCK *lock)
{
*ret = *val;
return 1;
}
int openssl_init_fork_handlers(void)
{
return 0;
}
int openssl_get_fork_id(void)
{
# if defined(OPENSSL_SYS_UNIX)
return getpid();
# else
return 0;
# endif
}
#endif