src/dirent/readdir.c

#include <dirent.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdlib.h>
#include <limits.h>
#include "__dirent.h"
#include "syscall.h"
#include "libc.h"

int __getdents(int, struct dirent *, size_t);

struct dirent *readdir(DIR *dir)
{
	struct dirent *de;
	
	if (dir->buf_pos >= dir->buf_end) {
		int len = __getdents(dir->fd, (void *)dir->buf, sizeof dir->buf);
		if (len < 0) {
			dir->lock = 0;
			return NULL;
		} else if (len == 0) return 0;
		dir->buf_end = len;
		dir->buf_pos = 0;
	}
	de = (void *)(dir->buf + dir->buf_pos);
	dir->buf_pos += de->d_reclen;
	dir->tell = de->d_off;
	return de;
}

LFS64(readdir);