1#include <unistd.h>
 2#include <fcntl.h>
 3#include "syscall.h"
 4
 5ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize)
 6{
 7	char dummy[1];
 8	if (!bufsize) {
 9		buf = dummy;
10		bufsize = 1;
11	}
12#ifdef SYS_readlink
13	int r = __syscall(SYS_readlink, path, buf, bufsize);
14#else
15	int r = __syscall(SYS_readlinkat, AT_FDCWD, path, buf, bufsize);
16#endif
17	if (buf == dummy && r > 0) r = 0;
18	return __syscall_ret(r);
19}