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