libc/misc/dirent/rewinddir.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

/*
 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
 *
 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 */

#include <dirent.h>
#include <errno.h>
#include <unistd.h>
#include "dirstream.h"

libc_hidden_proto(lseek)

/* rewinddir() just does an lseek(fd,0,0) - see close for comments */
void rewinddir(DIR * dir)
{
	if (!dir) {
		__set_errno(EBADF);
		return;
	}
	__pthread_mutex_lock(&(dir->dd_lock));
	lseek(dir->dd_fd, 0, SEEK_SET);
	dir->dd_nextoff = dir->dd_nextloc = dir->dd_size = 0;
	__pthread_mutex_unlock(&(dir->dd_lock));
}