Luna/libc/src/sys/wait.cpp

#include <bits/errno-return.h>
#include <sys/syscall.h>
#include <sys/wait.h>
#include <unistd.h>

extern "C"
{
    pid_t waitpid(pid_t pid, int* status, int options)
    {
        long rc = syscall(SYS_waitpid, pid, status, options);
        __errno_return(rc, pid_t);
    }

    pid_t wait(int* status)
    {
        return waitpid(-1, status, 0);
    }
}