1#include <unistd.h>
2#include <errno.h>
3#include <limits.h>
4#include <string.h>
5#include "syscall.h"
6
7char *getcwd(char *buf, size_t size)
8{
9	char tmp[PATH_MAX];
10	if (!buf) {
11		buf = tmp;
12		size = PATH_MAX;
13	} else if (!size) {
14		errno = EINVAL;
15		return 0;
16	}
17	if (syscall(SYS_getcwd, buf, size) < 0) return 0;
18	return buf == tmp ? strdup(buf) : buf;
19}
20