getresuid.c\misc\src - musl - musl - an implementation of the standard library for Linux-based systems

#define _GNU_SOURCE
#include <unistd.h>
#include "syscall.h"
int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid)
{
	return syscall(SYS_getresuid, ruid, euid, suid);
}