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/* named semaphore sanity check */
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <semaphore.h>
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#include <time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "test.h"
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#define TEST(c, ...) \
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( (c) || (t_error(#c " failed: " __VA_ARGS__),0) )
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int main(void)
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{
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char buf[100];
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struct timespec ts;
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sem_t *sem, *sem2;
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int val;
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clock_gettime(CLOCK_REALTIME, &ts);
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snprintf(buf, sizeof buf, "/testsuite-%d-%d", (int)getpid(), (int)ts.tv_nsec);
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TEST((sem=sem_open(buf, O_CREAT|O_EXCL, 0700, 1)) != SEM_FAILED,
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"could not open sem: %s\n", strerror(errno));
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errno = 0;
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TEST(sem_open(buf, O_CREAT|O_EXCL, 0700, 1) == SEM_FAILED,
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"reopening should fail with O_EXCL\n");
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TEST(errno == EEXIST,
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"after reopen failure errno is \"%s\" (%d); want EEXIST (%d)\n", strerror(errno), errno, EEXIST);
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TEST(sem_getvalue(sem, &val) == 0, "failed to get sem value\n");
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TEST(val == 1, "wrong initial semaphore value: %d\n", val);
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TEST((sem2=sem_open(buf, 0)) == sem,
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"could not reopen sem: got %p, want %p\n", sem2, sem);
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errno = 0;
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TEST(sem_wait(sem) == 0, "%s\n", strerror(errno));
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TEST(sem_getvalue(sem2, &val) == 0, "%s\n", strerror(errno));
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TEST(val == 0, "wrong semaphore value on second handle: %d\n", val);
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errno = 0;
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TEST(sem_trywait(sem) == -1 && errno == EAGAIN,
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"trywait on locked sem: got errno \"%s\" (%d), want EAGAIN (%d)\n", strerror(errno), errno, EAGAIN);
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TEST(sem_post(sem) == 0, "%s\n", strerror(errno));
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TEST(sem_getvalue(sem2, &val) == 0, "%s\n", strerror(errno));
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TEST(val == 1, "wrong semaphore value on second handle: %d\n", val);
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TEST(sem_close(sem) == 0, "%s\n", strerror(errno));
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TEST(sem_close(sem) == 0, "%s\n", strerror(errno));
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TEST(sem_unlink(buf) == 0, "%s\n", strerror(errno));
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return t_status;
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}
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