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/* vim: set tabstop=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80: */
/*
* Copyright 2016 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <openssl/crypto.h>
#if OPENSSL_VERSION_NUMBER < 0x10100000L
#include <pthread.h>
static pthread_mutex_t *locks;
static void
locking_cb(int mode, int type, const char *file, int line)
{
if (mode & CRYPTO_LOCK)
pthread_mutex_lock(&(locks[type]));
else
pthread_mutex_unlock(&(locks[type]));
}
static void
thread_id_cb(CRYPTO_THREADID *tid)
{
CRYPTO_THREADID_set_numeric(tid, (unsigned long)pthread_self());
}
static void __attribute__((constructor))
locking_setup(void)
{
int i;
/* Check if somebody else has set a locking callback already. */
if (CRYPTO_get_locking_callback())
return;
locks = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
if (!locks)
return;
for (i = 0; i < CRYPTO_num_locks(); i++) {
if (pthread_mutex_init(&(locks[i]), NULL) != 0) {
for (int n = 0; n < i; n++)
pthread_mutex_destroy(&(locks[n]));
OPENSSL_free(locks);
locks = NULL;
return;
}
}
CRYPTO_set_locking_callback(locking_cb);
CRYPTO_THREADID_set_callback(thread_id_cb);
}
#endif /* OpenSSL < 1.1.0 */
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