85 lines
3.5 KiB
C
85 lines
3.5 KiB
C
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/* Copyright 2022 Google LLC
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google LLC nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "test_skel.h"
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int main(int argc, char *argv[]) {
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// We need an invalid timer value. The assert()'s below should
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// be static asserts but it is not available in older C versions.
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#define kInvalidTimer 9999
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assert(kInvalidTimer != ITIMER_REAL);
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assert(kInvalidTimer != ITIMER_VIRTUAL);
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assert(kInvalidTimer != ITIMER_PROF);
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// This should fail with EINVAL.
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struct kernel_itimerval curr_itimer;
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assert(sys_getitimer(kInvalidTimer, &curr_itimer) == -1);
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assert(errno == EINVAL);
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// Create a read-only page.
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size_t page_size = getpagesize();
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void* read_only_page = sys_mmap(NULL, page_size, PROT_READ,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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assert(read_only_page != MAP_FAILED);
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// This should fail with EFAULT.
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assert(sys_getitimer(ITIMER_REAL,
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(struct kernel_itimerval*) read_only_page) == -1);
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assert(errno == EFAULT);
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// This should complete without an error.
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assert(sys_getitimer(ITIMER_REAL, &curr_itimer) == 0);
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// Set up a real time timer with very long interval and value so that
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// we do not need to handle SIGALARM in test.
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struct kernel_itimerval new_itimer;
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const time_t kIntervalSec = 60 * 60 * 24 * 365; // One year.
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const long kIntervalUSec = 123;
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new_itimer.it_interval.tv_sec = kIntervalSec;
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new_itimer.it_interval.tv_usec = kIntervalUSec;
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new_itimer.it_value = new_itimer.it_interval;
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assert(sys_setitimer(ITIMER_REAL, &new_itimer, NULL) == 0);
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assert(sys_getitimer(ITIMER_REAL, &curr_itimer) == 0);
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assert(kernel_timeval_eq(&curr_itimer.it_interval, &new_itimer.it_interval));
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// Disable timer.
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struct kernel_itimerval empty_itimer;
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empty_itimer.it_interval.tv_sec = 0;
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empty_itimer.it_interval.tv_usec = 0;
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empty_itimer.it_value = empty_itimer.it_interval;
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assert(sys_setitimer(ITIMER_REAL, &empty_itimer, NULL) == 0);
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// We should read back an empty itimer.
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assert(sys_getitimer(ITIMER_REAL, &curr_itimer) == 0);
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assert(kernel_itimerval_eq(&curr_itimer, &empty_itimer));
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return 0;
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}
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