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/*
* Copyright (C) 2010-2012 Free Software Foundation, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>
*
*/
#include "gnutls_int.h"
#include "errors.h"
#include <libtasn1.h>
#include <dh.h>
#include <random.h>
#include <locks.h>
/**
* gnutls_global_set_mutex:
* @init: mutex initialization function
* @deinit: mutex deinitialization function
* @lock: mutex locking function
* @unlock: mutex unlocking function
*
* With this function you are allowed to override the default mutex
* locks used in some parts of gnutls and dependent libraries. This function
* should be used if you have complete control of your program and libraries.
* Do not call this function from a library, or preferably from any application
* unless really needed to. GnuTLS will use the appropriate locks for the running
* system.
*
* Note that since the move to implicit initialization of GnuTLS on library
* load, calling this function will deinitialize the library, and re-initialize
* it after the new locking functions are set.
*
* This function must be called prior to any other gnutls function.
*
* Since: 2.12.0
**/
void
gnutls_global_set_mutex(mutex_init_func init, mutex_deinit_func deinit,
mutex_lock_func lock, mutex_unlock_func unlock)
{
int ret;
if (init == NULL || deinit == NULL || lock == NULL
|| unlock == NULL)
return;
gnutls_global_deinit();
gnutls_mutex_init = init;
gnutls_mutex_deinit = deinit;
gnutls_mutex_lock = lock;
gnutls_mutex_unlock = unlock;
ret = gnutls_global_init();
if (ret < 0)
_gnutls_debug_log("error in gnutls_global_init(): %s\n", gnutls_strerror(ret));
}
int
gnutls_static_mutex_lock(gnutls_static_mutex_t lock)
{
if (unlikely(glthread_lock_lock(lock))) {
return gnutls_assert_val(GNUTLS_E_LOCKING_ERROR);
}
return 0;
}
int
gnutls_static_mutex_unlock(gnutls_static_mutex_t lock)
{
if (unlikely(glthread_lock_unlock(lock))) {
return gnutls_assert_val(GNUTLS_E_LOCKING_ERROR);
}
return 0;
}
int
gnutls_rwlock_rdlock(gnutls_rwlock_t rwlock)
{
if (unlikely(glthread_rwlock_rdlock(rwlock))) {
return gnutls_assert_val(GNUTLS_E_LOCKING_ERROR);
}
return 0;
}
int
gnutls_rwlock_wrlock(gnutls_rwlock_t rwlock)
{
if (unlikely(glthread_rwlock_wrlock(rwlock))) {
return gnutls_assert_val(GNUTLS_E_LOCKING_ERROR);
}
return 0;
}
int
gnutls_rwlock_unlock(gnutls_rwlock_t rwlock)
{
if (unlikely(glthread_rwlock_unlock(rwlock))) {
return gnutls_assert_val(GNUTLS_E_LOCKING_ERROR);
}
return 0;
}
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