blob: 860538a0fbeae9c4bbfd27caa68eb2ea354b01d6 [file] [log] [blame]
/* Copyright 2022 Google LLC
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* modification, are permitted provided that the following conditions are
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*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
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* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "test_skel.h"
int main(int argc, char *argv[]) {
// We need an invalid timer value. The assert()'s below should
// be static asserts but it is not available in older C versions.
#define kInvalidTimer 9999
assert(kInvalidTimer != ITIMER_REAL);
assert(kInvalidTimer != ITIMER_VIRTUAL);
assert(kInvalidTimer != ITIMER_PROF);
// This should fail with EINVAL.
struct kernel_itimerval curr_itimer;
assert(sys_getitimer(kInvalidTimer, &curr_itimer) == -1);
assert(errno == EINVAL);
// Create a read-only page.
size_t page_size = getpagesize();
void* read_only_page = sys_mmap(NULL, page_size, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
assert(read_only_page != MAP_FAILED);
// This should fail with EFAULT.
assert(sys_getitimer(ITIMER_REAL,
(struct kernel_itimerval*) read_only_page) == -1);
assert(errno == EFAULT);
// This should complete without an error.
assert(sys_getitimer(ITIMER_REAL, &curr_itimer) == 0);
// Set up a real time timer with very long interval and value so that
// we do not need to handle SIGALARM in test.
struct kernel_itimerval new_itimer;
const time_t kIntervalSec = 60 * 60 * 24 * 365; // One year.
const long kIntervalUSec = 123;
new_itimer.it_interval.tv_sec = kIntervalSec;
new_itimer.it_interval.tv_usec = kIntervalUSec;
new_itimer.it_value = new_itimer.it_interval;
assert(sys_setitimer(ITIMER_REAL, &new_itimer, NULL) == 0);
assert(sys_getitimer(ITIMER_REAL, &curr_itimer) == 0);
assert(kernel_timeval_eq(&curr_itimer.it_interval, &new_itimer.it_interval));
// Disable timer.
struct kernel_itimerval empty_itimer;
empty_itimer.it_interval.tv_sec = 0;
empty_itimer.it_interval.tv_usec = 0;
empty_itimer.it_value = empty_itimer.it_interval;
assert(sys_setitimer(ITIMER_REAL, &empty_itimer, NULL) == 0);
// We should read back an empty itimer.
assert(sys_getitimer(ITIMER_REAL, &curr_itimer) == 0);
assert(kernel_itimerval_eq(&curr_itimer, &empty_itimer));
return 0;
}