glibc/sysdeps/mach/hurd/seekdir.c

40 lines
1.4 KiB
C

/* Copyright (C) 1993-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stddef.h>
#include <dirent.h>
#include <unistd.h>
#include "dirstream.h"
/* Seek to position POS in DIRP. */
/* XXX should be __seekdir ? */
void
seekdir (dirp, pos)
DIR *dirp;
long int pos;
{
__libc_lock_lock (dirp->__lock);
/* Change our entry index pointer to POS and discard any data already
read. The next `readdir' call will notice the empty block and read
anew from the location in DIRP->__entry_ptr and reset the other state
variables. */
dirp->__entry_ptr = pos;
dirp->__size = 0;
__libc_lock_unlock (dirp->__lock);
}