streamline old-kernel fallback path of pipe2 to use syscalls directly

[musl] / src / unistd / renameat.c

#include <stdio.h>
#include "syscall.h"

int renameat(int oldfd, const char *old, int newfd, const char *new)
{
        return syscall(SYS_renameat, oldfd, old, newfd, new);
}