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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "fileio.h"
#include "apr_strings.h"
#include "apr_portable.h"
#ifdef HAVE_SYS_SYSLIMITS_H
#include <sys/syslimits.h>
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
static apr_status_t dir_cleanup(void *thedir)
{
apr_dir_t *dir = thedir;
if (closedir(dir->dirstruct) == 0) {
return APR_SUCCESS;
}
else {
return errno;
}
}
apr_status_t apr_dir_open(apr_dir_t **new, const char *dirname, apr_pool_t *cont)
{
/* On some platforms (e.g., Linux+GNU libc), d_name[] in struct
* dirent is declared with enough storage for the name. On other
* platforms (e.g., Solaris 8 for Intel), d_name is declared as a
* one-byte array. Note: gcc evaluates this at compile time.
*/
apr_size_t dirent_size =
(sizeof((*new)->entry->d_name) > 1 ?
sizeof(struct dirent) : sizeof (struct dirent) + 255);
(*new) = (apr_dir_t *)apr_palloc(cont, sizeof(apr_dir_t));
(*new)->cntxt = cont;
(*new)->dirname = apr_pstrdup(cont, dirname);
(*new)->dirstruct = opendir(dirname);
(*new)->entry = apr_pcalloc(cont, dirent_size);
if ((*new)->dirstruct == NULL) {
return errno;
}
else {
apr_pool_cleanup_register((*new)->cntxt, (void *)(*new), dir_cleanup,
apr_pool_cleanup_null);
return APR_SUCCESS;
}
}
apr_status_t apr_dir_close(apr_dir_t *thedir)
{
apr_status_t rv;
if ((rv = dir_cleanup(thedir)) == APR_SUCCESS) {
apr_pool_cleanup_kill(thedir->cntxt, thedir, dir_cleanup);
return APR_SUCCESS;
}
return rv;
}
apr_status_t apr_dir_read(apr_finfo_t *finfo, apr_int32_t wanted,
apr_dir_t *thedir)
{
apr_status_t ret = 0;
#if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) \
&& !defined(READDIR_IS_THREAD_SAFE)
struct dirent *retent;
ret = readdir_r(thedir->dirstruct, thedir->entry, &retent);
/* Avoid the Linux problem where at end-of-directory thedir->entry
* is set to NULL, but ret = APR_SUCCESS.
*/
if(!ret && thedir->entry != retent)
ret = APR_ENOENT;
#else
thedir->entry = readdir(thedir->dirstruct);
if (thedir->entry == NULL) {
/* If NULL was returned, this can NEVER be a success. Can it?! */
if (errno == APR_SUCCESS) {
ret = APR_ENOENT;
}
else
ret = errno;
}
#endif
/* No valid bit flag to test here - do we want one? */
finfo->fname = NULL;
if (ret) {
finfo->valid = 0;
return ret;
}
/* What we already know - and restrict the wanted test below to stat
* only if stat will give us what this platform supports, and we can't
* get it from the platform.
* XXX: Optimize here with d_fileno, d_type etc by platform */
wanted &= ~(APR_FINFO_NAME);
if (wanted)
{
char fspec[PATH_MAX];
int off;
apr_cpystrn(fspec, thedir->dirname, sizeof(fspec));
off = strlen(fspec);
if (fspec[off - 1] != '/')
fspec[off++] = '/';
apr_cpystrn(fspec + off, thedir->entry->d_name, sizeof(fspec) - off);
/* ??? Or lstat below? What is it we really want? */
ret = apr_stat(finfo, fspec, wanted, thedir->cntxt);
}
if (wanted && (ret == APR_SUCCESS || ret == APR_INCOMPLETE)) {
wanted &= ~finfo->valid;
ret = APR_SUCCESS;
}
else {
/* We don't bail because we fail to stat, when we are only -required-
* to readdir... but the result will be APR_INCOMPLETE
*/
finfo->cntxt = thedir->cntxt;
finfo->valid = 0;
}
/* We passed a stack name that is now gone */
finfo->fname = NULL;
finfo->valid |= APR_FINFO_NAME;
/* XXX: Optimize here with d_fileno, d_type etc by platform */
finfo->name = thedir->entry->d_name;
if (wanted)
return APR_INCOMPLETE;
return APR_SUCCESS;
}
apr_status_t apr_dir_rewind(apr_dir_t *thedir)
{
rewinddir(thedir->dirstruct);
return APR_SUCCESS;
}
apr_status_t apr_dir_make(const char *path, apr_fileperms_t perm, apr_pool_t *cont)
{
mode_t mode = apr_unix_perms2mode(perm);
if (mkdir(path, mode) == 0) {
return APR_SUCCESS;
}
else {
return errno;
}
}
apr_status_t apr_dir_remove(const char *path, apr_pool_t *cont)
{
if (rmdir(path) == 0) {
return APR_SUCCESS;
}
else {
return errno;
}
}
apr_status_t apr_os_dir_get(apr_os_dir_t **thedir, apr_dir_t *dir)
{
if (dir == NULL) {
return APR_ENODIR;
}
*thedir = dir->dirstruct;
return APR_SUCCESS;
}
apr_status_t apr_os_dir_put(apr_dir_t **dir, apr_os_dir_t *thedir,
apr_pool_t *cont)
{
if ((*dir) == NULL) {
(*dir) = (apr_dir_t *)apr_pcalloc(cont, sizeof(apr_dir_t));
(*dir)->cntxt = cont;
}
(*dir)->dirstruct = thedir;
return APR_SUCCESS;
}
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