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937a200089
This is actually a fully functional build except: * All internal shared libraries are static linked to make sure there is no interference with ports (and to reduce build time). * It does not have the python/perl/etc plugin or API support. * By default, it installs as "svnlite" rather than "svn". * If WITH_SVN added in make.conf, you get "svn". * If WITHOUT_SVNLITE is in make.conf, this is completely disabled. To be absolutely clear, this is not intended for any use other than checking out freebsd source and committing, like we once did with cvs. It should be usable for small scale local repositories that don't need the python/perl plugin architecture.
365 lines
10 KiB
C
365 lines
10 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "apr_arch_file_io.h"
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#include "apr_strings.h"
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#include "apr_portable.h"
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#if APR_HAVE_SYS_SYSLIMITS_H
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#include <sys/syslimits.h>
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#endif
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#if APR_HAVE_LIMITS_H
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#include <limits.h>
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#endif
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static apr_status_t dir_cleanup(void *thedir)
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{
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apr_dir_t *dir = thedir;
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if (closedir(dir->dirstruct) == 0) {
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return APR_SUCCESS;
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}
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else {
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return errno;
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}
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}
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#define PATH_SEPARATOR '/'
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/* Remove trailing separators that don't affect the meaning of PATH. */
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static const char *path_canonicalize (const char *path, apr_pool_t *pool)
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{
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/* At some point this could eliminate redundant components. For
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* now, it just makes sure there is no trailing slash. */
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apr_size_t len = strlen (path);
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apr_size_t orig_len = len;
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while ((len > 0) && (path[len - 1] == PATH_SEPARATOR))
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len--;
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if (len != orig_len)
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return apr_pstrndup (pool, path, len);
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else
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return path;
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}
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/* Remove one component off the end of PATH. */
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static char *path_remove_last_component (const char *path, apr_pool_t *pool)
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{
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const char *newpath = path_canonicalize (path, pool);
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int i;
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for (i = (strlen(newpath) - 1); i >= 0; i--) {
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if (path[i] == PATH_SEPARATOR)
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break;
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}
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return apr_pstrndup (pool, path, (i < 0) ? 0 : i);
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}
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apr_status_t apr_dir_open(apr_dir_t **new, const char *dirname,
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apr_pool_t *pool)
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{
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/* On some platforms (e.g., Linux+GNU libc), d_name[] in struct
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* dirent is declared with enough storage for the name. On other
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* platforms (e.g., Solaris 8 for Intel), d_name is declared as a
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* one-byte array. Note: gcc evaluates this at compile time.
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*/
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apr_size_t dirent_size =
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sizeof(*(*new)->entry) +
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(sizeof((*new)->entry->d_name) > 1 ? 0 : 255);
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DIR *dir = opendir(dirname);
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if (!dir) {
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return errno;
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}
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(*new) = (apr_dir_t *)apr_palloc(pool, sizeof(apr_dir_t));
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(*new)->pool = pool;
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(*new)->dirname = apr_pstrdup(pool, dirname);
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(*new)->dirstruct = dir;
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(*new)->entry = apr_pcalloc(pool, dirent_size);
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apr_pool_cleanup_register((*new)->pool, *new, dir_cleanup,
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apr_pool_cleanup_null);
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return APR_SUCCESS;
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}
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apr_status_t apr_dir_close(apr_dir_t *thedir)
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{
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return apr_pool_cleanup_run(thedir->pool, thedir, dir_cleanup);
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}
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#ifdef DIRENT_TYPE
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static apr_filetype_e filetype_from_dirent_type(int type)
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{
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switch (type) {
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case DT_REG:
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return APR_REG;
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case DT_DIR:
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return APR_DIR;
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case DT_LNK:
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return APR_LNK;
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case DT_CHR:
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return APR_CHR;
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case DT_BLK:
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return APR_BLK;
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#if defined(DT_FIFO)
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case DT_FIFO:
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return APR_PIPE;
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#endif
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#if !defined(BEOS) && defined(DT_SOCK)
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case DT_SOCK:
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return APR_SOCK;
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#endif
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default:
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return APR_UNKFILE;
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}
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}
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#endif
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apr_status_t apr_dir_read(apr_finfo_t *finfo, apr_int32_t wanted,
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apr_dir_t *thedir)
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{
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apr_status_t ret = 0;
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#ifdef DIRENT_TYPE
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apr_filetype_e type;
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#endif
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#if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) \
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&& !defined(READDIR_IS_THREAD_SAFE)
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#ifdef APR_USE_READDIR64_R
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struct dirent64 *retent;
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/* If LFS is enabled and readdir64_r is available, readdir64_r is
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* used in preference to readdir_r. This allows directories to be
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* read which contain a (64-bit) inode number which doesn't fit
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* into the 32-bit apr_ino_t, iff the caller doesn't actually care
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* about the inode number (i.e. wanted & APR_FINFO_INODE == 0).
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* (such inodes may be seen in some wonky NFS environments)
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*
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* Similarly, if the d_off field cannot be reprented in a 32-bit
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* offset, the libc readdir_r() would barf; using readdir64_r
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* bypasses that case entirely since APR does not care about
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* d_off. */
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ret = readdir64_r(thedir->dirstruct, thedir->entry, &retent);
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#else
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struct dirent *retent;
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ret = readdir_r(thedir->dirstruct, thedir->entry, &retent);
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#endif
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/* POSIX treats "end of directory" as a non-error case, so ret
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* will be zero and retent will be set to NULL in that case. */
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if (!ret && retent == NULL) {
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ret = APR_ENOENT;
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}
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/* Solaris is a bit strange, if there are no more entries in the
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* directory, it returns EINVAL. Since this is against POSIX, we
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* hack around the problem here. EINVAL is possible from other
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* readdir implementations, but only if the result buffer is too small.
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* since we control the size of that buffer, we should never have
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* that problem.
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*/
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if (ret == EINVAL) {
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ret = APR_ENOENT;
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}
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#else
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/* We're about to call a non-thread-safe readdir() that may
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possibly set `errno', and the logic below actually cares about
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errno after the call. Therefore we need to clear errno first. */
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errno = 0;
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thedir->entry = readdir(thedir->dirstruct);
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if (thedir->entry == NULL) {
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/* If NULL was returned, this can NEVER be a success. Can it?! */
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if (errno == APR_SUCCESS) {
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ret = APR_ENOENT;
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}
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else
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ret = errno;
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}
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#endif
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/* No valid bit flag to test here - do we want one? */
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finfo->fname = NULL;
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if (ret) {
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finfo->valid = 0;
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return ret;
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}
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#ifdef DIRENT_TYPE
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type = filetype_from_dirent_type(thedir->entry->DIRENT_TYPE);
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if (type != APR_UNKFILE) {
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wanted &= ~APR_FINFO_TYPE;
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}
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#endif
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#ifdef DIRENT_INODE
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if (thedir->entry->DIRENT_INODE && thedir->entry->DIRENT_INODE != -1) {
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#ifdef APR_USE_READDIR64_R
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/* If readdir64_r is used, check for the overflow case of trying
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* to fit a 64-bit integer into a 32-bit integer. */
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if (sizeof(apr_ino_t) >= sizeof(retent->DIRENT_INODE)
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|| (apr_ino_t)retent->DIRENT_INODE == retent->DIRENT_INODE) {
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wanted &= ~APR_FINFO_INODE;
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} else {
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/* Prevent the fallback code below from filling in the
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* inode if the stat call fails. */
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retent->DIRENT_INODE = 0;
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}
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#else
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wanted &= ~APR_FINFO_INODE;
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#endif /* APR_USE_READDIR64_R */
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}
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#endif /* DIRENT_INODE */
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wanted &= ~APR_FINFO_NAME;
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if (wanted)
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{
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char fspec[APR_PATH_MAX];
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char *end;
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end = apr_cpystrn(fspec, thedir->dirname, sizeof fspec);
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if (end > fspec && end[-1] != '/' && (end < fspec + APR_PATH_MAX))
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*end++ = '/';
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apr_cpystrn(end, thedir->entry->d_name,
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sizeof fspec - (end - fspec));
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ret = apr_stat(finfo, fspec, APR_FINFO_LINK | wanted, thedir->pool);
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/* We passed a stack name that will disappear */
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finfo->fname = NULL;
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}
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if (wanted && (ret == APR_SUCCESS || ret == APR_INCOMPLETE)) {
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wanted &= ~finfo->valid;
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}
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else {
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/* We don't bail because we fail to stat, when we are only -required-
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* to readdir... but the result will be APR_INCOMPLETE
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*/
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finfo->pool = thedir->pool;
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finfo->valid = 0;
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#ifdef DIRENT_TYPE
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if (type != APR_UNKFILE) {
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finfo->filetype = type;
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finfo->valid |= APR_FINFO_TYPE;
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}
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#endif
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#ifdef DIRENT_INODE
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if (thedir->entry->DIRENT_INODE && thedir->entry->DIRENT_INODE != -1) {
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finfo->inode = thedir->entry->DIRENT_INODE;
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finfo->valid |= APR_FINFO_INODE;
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}
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#endif
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}
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finfo->name = apr_pstrdup(thedir->pool, thedir->entry->d_name);
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finfo->valid |= APR_FINFO_NAME;
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if (wanted)
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return APR_INCOMPLETE;
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return APR_SUCCESS;
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}
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apr_status_t apr_dir_rewind(apr_dir_t *thedir)
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{
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rewinddir(thedir->dirstruct);
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return APR_SUCCESS;
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}
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apr_status_t apr_dir_make(const char *path, apr_fileperms_t perm,
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apr_pool_t *pool)
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{
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mode_t mode = apr_unix_perms2mode(perm);
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if (mkdir(path, mode) == 0) {
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return APR_SUCCESS;
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}
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else {
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return errno;
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}
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}
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apr_status_t apr_dir_make_recursive(const char *path, apr_fileperms_t perm,
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apr_pool_t *pool)
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{
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apr_status_t apr_err = 0;
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apr_err = apr_dir_make (path, perm, pool); /* Try to make PATH right out */
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if (apr_err == ENOENT) { /* Missing an intermediate dir */
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char *dir;
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dir = path_remove_last_component(path, pool);
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/* If there is no path left, give up. */
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if (dir[0] == '\0') {
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return apr_err;
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}
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apr_err = apr_dir_make_recursive(dir, perm, pool);
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if (!apr_err)
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apr_err = apr_dir_make (path, perm, pool);
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}
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/*
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* It's OK if PATH exists. Timing issues can lead to the second
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* apr_dir_make being called on existing dir, therefore this check
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* has to come last.
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*/
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if (APR_STATUS_IS_EEXIST(apr_err))
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return APR_SUCCESS;
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return apr_err;
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}
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apr_status_t apr_dir_remove(const char *path, apr_pool_t *pool)
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{
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if (rmdir(path) == 0) {
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return APR_SUCCESS;
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}
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else {
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return errno;
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}
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}
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apr_status_t apr_os_dir_get(apr_os_dir_t **thedir, apr_dir_t *dir)
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{
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if (dir == NULL) {
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return APR_ENODIR;
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}
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*thedir = dir->dirstruct;
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return APR_SUCCESS;
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}
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apr_status_t apr_os_dir_put(apr_dir_t **dir, apr_os_dir_t *thedir,
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apr_pool_t *pool)
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{
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if ((*dir) == NULL) {
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(*dir) = (apr_dir_t *)apr_pcalloc(pool, sizeof(apr_dir_t));
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(*dir)->pool = pool;
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}
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(*dir)->dirstruct = thedir;
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return APR_SUCCESS;
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}
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