mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 21:20:18 +00:00
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/* Copyright (C) 1993,94,95,96,97,98,2001,2003 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <dirent.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <hurd.h>
|
|
#include <hurd/fd.h>
|
|
#include "dirstream.h"
|
|
|
|
|
|
/* Open a directory stream on NAME. */
|
|
DIR *
|
|
__opendir (const char *name)
|
|
{
|
|
DIR *dirp;
|
|
int fd;
|
|
struct hurd_fd *d;
|
|
|
|
if (name[0] == '\0')
|
|
{
|
|
/* POSIX.1-1990 says an empty name gets ENOENT;
|
|
but `open' might like it fine. */
|
|
__set_errno (ENOENT);
|
|
return NULL;
|
|
}
|
|
|
|
{
|
|
/* Append trailing slash to directory name to force ENOTDIR
|
|
if it's not a directory.
|
|
|
|
We open using the O_NONBLOCK flag so that a nondirectory with
|
|
blocking behavior (FIFO or device) gets ENOTDIR immediately
|
|
rather than waiting for the special file's open wakeup predicate. */
|
|
|
|
size_t len = strlen (name);
|
|
if (name[len - 1] == '/')
|
|
fd = __open (name, O_RDONLY | O_NONBLOCK);
|
|
else
|
|
{
|
|
char n[len + 2];
|
|
memcpy (n, name, len);
|
|
n[len] = '/';
|
|
n[len + 1] = '\0';
|
|
fd = __open (n, O_RDONLY | O_NONBLOCK);
|
|
}
|
|
}
|
|
if (fd < 0)
|
|
return NULL;
|
|
|
|
dirp = (DIR *) malloc (sizeof (DIR));
|
|
if (dirp == NULL)
|
|
{
|
|
__close (fd);
|
|
return NULL;
|
|
}
|
|
|
|
/* Extract the pointer to the descriptor structure. */
|
|
__mutex_lock (&_hurd_dtable_lock);
|
|
d = dirp->__fd = _hurd_dtable[fd];
|
|
__mutex_unlock (&_hurd_dtable_lock);
|
|
|
|
/* Set the descriptor to close on exec. */
|
|
__spin_lock (&d->port.lock);
|
|
d->flags |= FD_CLOEXEC;
|
|
__spin_unlock (&d->port.lock);
|
|
|
|
dirp->__data = dirp->__ptr = NULL;
|
|
dirp->__entry_data = dirp->__entry_ptr = 0;
|
|
dirp->__allocation = 0;
|
|
dirp->__size = 0;
|
|
|
|
__libc_lock_init (dirp->__lock);
|
|
|
|
return dirp;
|
|
}
|
|
weak_alias (__opendir, opendir)
|