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/* Copyright (C) 1993-2017 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 <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 <not-cancel.h>
#include "dirstream.h"
/* Open a directory stream on a file descriptor in Hurd internal form.
We do no checking here on the descriptor. */
DIR *
_hurd_fd_opendir (struct hurd_fd *d)
{
DIR *dirp;
if (d == NULL)
{
errno = EBADF;
return NULL;
}
dirp = (DIR *) malloc (sizeof (DIR));
if (dirp == NULL)
return NULL;
/* Set the descriptor to close on exec. */
HURD_CRITICAL_BEGIN;
__spin_lock (&d->port.lock);
d->flags |= FD_CLOEXEC;
__spin_unlock (&d->port.lock);
HURD_CRITICAL_END;
dirp->__fd = d;
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;
}
DIR *
internal_function
__opendirat (int dfd, const char *name)
{
if (name[0] == '\0')
{
/* POSIX.1-1990 says an empty name gets ENOENT;
but `open' might like it fine. */
__set_errno (ENOENT);
return NULL;
}
int flags = O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_CLOEXEC;
int fd;
#if IS_IN (rtld)
assert (dfd == AT_FDCWD);
fd = open_not_cancel_2 (name, flags);
#else
fd = openat_not_cancel_3 (dfd, name, flags);
#endif
if (fd < 0)
return NULL;
/* Extract the pointer to the descriptor structure. */
DIR *dirp = _hurd_fd_opendir (_hurd_fd_get (fd));
if (dirp == NULL)
__close (fd);
return dirp;
}
/* Open a directory stream on NAME. */
DIR *
__opendir (const char *name)
{
#if 0 /* TODO. */
return __opendirat (AT_FDCWD, name);
#else
if (name[0] == '\0')
{
/* POSIX.1-1990 says an empty name gets ENOENT;
but `open' might like it fine. */
__set_errno (ENOENT);
return NULL;
}
int fd = __open (name, O_RDONLY | O_NONBLOCK | O_DIRECTORY);
if (fd < 0)
return NULL;
/* Extract the pointer to the descriptor structure. */
DIR *dirp = _hurd_fd_opendir (_hurd_fd_get (fd));
if (dirp == NULL)
__close (fd);
return dirp;
#endif
}
weak_alias (__opendir, opendir)
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