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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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 <pthread.h>
#include "s2n_test.h"
static void *s2n_init_fail_cb(void *_unused_arg)
{
(void) _unused_arg;
EXPECT_FAILURE_WITH_ERRNO(s2n_init(), S2N_ERR_INITIALIZED);
return NULL;
}
static void *s2n_init_success_cb(void *_unused_arg)
{
(void) _unused_arg;
EXPECT_SUCCESS(s2n_init());
return NULL;
}
int s2n_enable_atexit(void);
int main(int argc, char **argv)
{
BEGIN_TEST_NO_INIT();
/* Disabling the atexit handler makes it easier for us to test s2n_init and s2n_cleanup
* behavior. Otherwise we'd have to create and exit a bunch of processes to test this
* interaction. */
EXPECT_SUCCESS(s2n_disable_atexit());
/* Calling s2n_init twice in a row will cause an error */
EXPECT_SUCCESS(s2n_init());
EXPECT_FAILURE_WITH_ERRNO(s2n_init(), S2N_ERR_INITIALIZED);
EXPECT_SUCCESS(s2n_cleanup());
/* Second call to s2n_cleanup will fail, since the full cleanup is not idempotent.
* This behavior only exists when atexit is disabled. */
EXPECT_FAILURE_WITH_ERRNO(s2n_cleanup(), S2N_ERR_NOT_INITIALIZED);
/* Clean up and init multiple times */
for (size_t i = 0; i < 10; i++) {
EXPECT_SUCCESS(s2n_init());
EXPECT_SUCCESS(s2n_cleanup());
}
/* Calling s2n_init again after creating a process will cause an error */
EXPECT_SUCCESS(s2n_init());
int pid = fork();
if (pid == 0) {
/* Child process */
EXPECT_FAILURE_WITH_ERRNO(s2n_init(), S2N_ERR_INITIALIZED);
EXPECT_SUCCESS(s2n_cleanup());
return 0;
}
EXPECT_SUCCESS(s2n_cleanup());
/* Calling s2n_init again after creating a thread will cause an error */
EXPECT_SUCCESS(s2n_init());
pthread_t init_thread = { 0 };
EXPECT_EQUAL(pthread_create(&init_thread, NULL, s2n_init_fail_cb, NULL), 0);
EXPECT_EQUAL(pthread_join(init_thread, NULL), 0);
EXPECT_SUCCESS(s2n_cleanup());
/* The following test requires atexit to be enabled. */
EXPECT_SUCCESS(s2n_enable_atexit());
/* Initializing s2n on a child thread without calling s2n_cleanup on that
* thread will not result in a memory leak. This is because we register
* thread-local memory to be cleaned up at thread-exit
* and then our atexit handler cleans up the rest at proccess-exit. */
pthread_t init_success_thread = { 0 };
EXPECT_EQUAL(pthread_create(&init_success_thread, NULL, s2n_init_success_cb, NULL), 0);
EXPECT_EQUAL(pthread_join(init_success_thread, NULL), 0);
END_TEST_NO_INIT();
}
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