1#include <dirent.h>
 2#include <errno.h>
 3#include <stddef.h>
 4#include "__dirent.h"
 5#include "syscall.h"
 6
 7typedef char dirstream_buf_alignment_check[1-2*(int)(
 8	offsetof(struct __dirstream, buf) % sizeof(off_t))];
 9
10struct dirent *readdir(DIR *dir)
11{
12	struct dirent *de;
13	
14	if (dir->buf_pos >= dir->buf_end) {
15		int len = __syscall(SYS_getdents, dir->fd, dir->buf, sizeof dir->buf);
16		if (len <= 0) {
17			if (len < 0 && len != -ENOENT) errno = -len;
18			return 0;
19		}
20		dir->buf_end = len;
21		dir->buf_pos = 0;
22	}
23	de = (void *)(dir->buf + dir->buf_pos);
24	dir->buf_pos += de->d_reclen;
25	dir->tell = de->d_off;
26	return de;
27}