kaguya
52 lines
877 B
C++
52 lines
877 B
C++
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#include <bits/ensure.h>
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#include <errno.h>
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#include <limits.h>
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#include <sys/sem.h>
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#include <mlibc/posix-sysdeps.hpp>
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int semget(key_t key, int n, int fl) {
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if(n > USHRT_MAX) {
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errno = EINVAL;
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return -1;
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}
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int id = 0;
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auto sysdep = MLIBC_CHECK_OR_ENOSYS(mlibc::sys_semget, -1);
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if(int e = sysdep(key, n, fl, &id); e) {
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errno = e;
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return -1;
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}
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return id;
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}
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int semop(int, struct sembuf *, size_t) {
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__ensure(!"Not implemented");
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__builtin_unreachable();
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}
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union semun {
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int val;
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struct semid_ds *buf;
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unsigned short *array;
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};
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int semctl(int id, int num, int cmd, ...) {
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union semun semun;
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int ret = 0;
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va_list ap;
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va_start(ap, cmd);
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semun = va_arg(ap, union semun);
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va_end(ap);
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auto sysdep = MLIBC_CHECK_OR_ENOSYS(mlibc::sys_semctl, -1);
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if(int e = sysdep(id, num, cmd, semun.buf, &ret); e) {
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errno = e;
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return -1;
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}
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return ret;
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}
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