1 #include <dirent.h>
2 #include <errno.h>
3 #include <stddef.h>
4 #include "__dirent.h"
5 #include "syscall.h"
6 
7 typedef char dirstream_buf_alignment_check[1-2*(int)(
8 	offsetof(struct __dirstream, buf) % sizeof(off_t))];
9 
readdir(DIR * dir)10 struct 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 }
28 
29 weak_alias(readdir, readdir64);
30