340 lines
10 KiB
C
340 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_file_io.h"
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#include "apr_general.h"
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#include "apr_strings.h"
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#include "apr_errno.h"
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#ifdef HAVE_UTIME
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#include <utime.h>
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#endif
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static apr_filetype_e filetype_from_mode(mode_t mode)
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{
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apr_filetype_e type;
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switch (mode & S_IFMT) {
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case S_IFREG:
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type = APR_REG; break;
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case S_IFDIR:
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type = APR_DIR; break;
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case S_IFLNK:
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type = APR_LNK; break;
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case S_IFCHR:
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type = APR_CHR; break;
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case S_IFBLK:
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type = APR_BLK; break;
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#if defined(S_IFFIFO)
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case S_IFFIFO:
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type = APR_PIPE; break;
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#endif
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#if !defined(BEOS) && defined(S_IFSOCK)
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case S_IFSOCK:
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type = APR_SOCK; break;
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#endif
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default:
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/* Work around missing S_IFxxx values above
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* for Linux et al.
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*/
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#if !defined(S_IFFIFO) && defined(S_ISFIFO)
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if (S_ISFIFO(mode)) {
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type = APR_PIPE;
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} else
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#endif
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#if !defined(BEOS) && !defined(S_IFSOCK) && defined(S_ISSOCK)
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if (S_ISSOCK(mode)) {
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type = APR_SOCK;
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} else
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#endif
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type = APR_UNKFILE;
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}
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return type;
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}
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static void fill_out_finfo(apr_finfo_t *finfo, struct_stat *info,
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apr_int32_t wanted)
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{
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finfo->valid = APR_FINFO_MIN | APR_FINFO_IDENT | APR_FINFO_NLINK
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| APR_FINFO_OWNER | APR_FINFO_PROT;
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finfo->protection = apr_unix_mode2perms(info->st_mode);
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finfo->filetype = filetype_from_mode(info->st_mode);
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finfo->user = info->st_uid;
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finfo->group = info->st_gid;
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finfo->size = info->st_size;
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finfo->device = info->st_dev;
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finfo->nlink = info->st_nlink;
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/* Check for overflow if storing a 64-bit st_ino in a 32-bit
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* apr_ino_t for LFS builds: */
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if (sizeof(apr_ino_t) >= sizeof(info->st_ino)
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|| (apr_ino_t)info->st_ino == info->st_ino) {
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finfo->inode = info->st_ino;
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} else {
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finfo->valid &= ~APR_FINFO_INODE;
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}
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apr_time_ansi_put(&finfo->atime, info->st_atime);
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#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
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finfo->atime += info->st_atim.tv_nsec / APR_TIME_C(1000);
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#elif defined(HAVE_STRUCT_STAT_ST_ATIMENSEC)
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finfo->atime += info->st_atimensec / APR_TIME_C(1000);
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#elif defined(HAVE_STRUCT_STAT_ST_ATIME_N)
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finfo->atime += info->st_atime_n / APR_TIME_C(1000);
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#endif
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apr_time_ansi_put(&finfo->mtime, info->st_mtime);
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#ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
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finfo->mtime += info->st_mtim.tv_nsec / APR_TIME_C(1000);
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#elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
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finfo->mtime += info->st_mtimensec / APR_TIME_C(1000);
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#elif defined(HAVE_STRUCT_STAT_ST_MTIME_N)
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finfo->mtime += info->st_mtime_n / APR_TIME_C(1000);
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#endif
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apr_time_ansi_put(&finfo->ctime, info->st_ctime);
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#ifdef HAVE_STRUCT_STAT_ST_CTIM_TV_NSEC
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finfo->ctime += info->st_ctim.tv_nsec / APR_TIME_C(1000);
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#elif defined(HAVE_STRUCT_STAT_ST_CTIMENSEC)
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finfo->ctime += info->st_ctimensec / APR_TIME_C(1000);
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#elif defined(HAVE_STRUCT_STAT_ST_CTIME_N)
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finfo->ctime += info->st_ctime_n / APR_TIME_C(1000);
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#endif
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#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
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#ifdef DEV_BSIZE
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finfo->csize = (apr_off_t)info->st_blocks * (apr_off_t)DEV_BSIZE;
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#else
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finfo->csize = (apr_off_t)info->st_blocks * (apr_off_t)512;
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#endif
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finfo->valid |= APR_FINFO_CSIZE;
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#endif
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}
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apr_status_t apr_file_info_get_locked(apr_finfo_t *finfo, apr_int32_t wanted,
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apr_file_t *thefile)
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{
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struct_stat info;
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if (thefile->buffered) {
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apr_status_t rv = apr_file_flush_locked(thefile);
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if (rv != APR_SUCCESS)
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return rv;
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}
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if (fstat(thefile->filedes, &info) == 0) {
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finfo->pool = thefile->pool;
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finfo->fname = thefile->fname;
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fill_out_finfo(finfo, &info, wanted);
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return (wanted & ~finfo->valid) ? APR_INCOMPLETE : 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_DECLARE(apr_status_t) apr_file_info_get(apr_finfo_t *finfo,
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apr_int32_t wanted,
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apr_file_t *thefile)
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{
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struct_stat info;
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if (thefile->buffered) {
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apr_status_t rv = apr_file_flush(thefile);
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if (rv != APR_SUCCESS)
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return rv;
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}
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if (fstat(thefile->filedes, &info) == 0) {
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finfo->pool = thefile->pool;
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finfo->fname = thefile->fname;
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fill_out_finfo(finfo, &info, wanted);
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return (wanted & ~finfo->valid) ? APR_INCOMPLETE : 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_DECLARE(apr_status_t) apr_file_perms_set(const char *fname,
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apr_fileperms_t perms)
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{
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mode_t mode = apr_unix_perms2mode(perms);
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if (chmod(fname, mode) == -1)
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return errno;
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_file_attrs_set(const char *fname,
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apr_fileattrs_t attributes,
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apr_fileattrs_t attr_mask,
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apr_pool_t *pool)
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{
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apr_status_t status;
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apr_finfo_t finfo;
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/* Don't do anything if we can't handle the requested attributes */
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if (!(attr_mask & (APR_FILE_ATTR_READONLY
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| APR_FILE_ATTR_EXECUTABLE)))
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return APR_SUCCESS;
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status = apr_stat(&finfo, fname, APR_FINFO_PROT, pool);
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if (status)
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return status;
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/* ### TODO: should added bits be umask'd? */
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if (attr_mask & APR_FILE_ATTR_READONLY)
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{
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if (attributes & APR_FILE_ATTR_READONLY)
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{
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finfo.protection &= ~APR_UWRITE;
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finfo.protection &= ~APR_GWRITE;
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finfo.protection &= ~APR_WWRITE;
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}
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else
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{
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/* ### umask this! */
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finfo.protection |= APR_UWRITE;
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finfo.protection |= APR_GWRITE;
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finfo.protection |= APR_WWRITE;
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}
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}
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if (attr_mask & APR_FILE_ATTR_EXECUTABLE)
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{
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if (attributes & APR_FILE_ATTR_EXECUTABLE)
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{
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/* ### umask this! */
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finfo.protection |= APR_UEXECUTE;
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finfo.protection |= APR_GEXECUTE;
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finfo.protection |= APR_WEXECUTE;
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}
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else
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{
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finfo.protection &= ~APR_UEXECUTE;
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finfo.protection &= ~APR_GEXECUTE;
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finfo.protection &= ~APR_WEXECUTE;
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}
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}
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return apr_file_perms_set(fname, finfo.protection);
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}
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APR_DECLARE(apr_status_t) apr_file_mtime_set(const char *fname,
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apr_time_t mtime,
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apr_pool_t *pool)
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{
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apr_status_t status;
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apr_finfo_t finfo;
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status = apr_stat(&finfo, fname, APR_FINFO_ATIME, pool);
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if (status) {
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return status;
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}
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#ifdef HAVE_UTIMES
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{
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struct timeval tvp[2];
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tvp[0].tv_sec = apr_time_sec(finfo.atime);
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tvp[0].tv_usec = apr_time_usec(finfo.atime);
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tvp[1].tv_sec = apr_time_sec(mtime);
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tvp[1].tv_usec = apr_time_usec(mtime);
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if (utimes(fname, tvp) == -1) {
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return errno;
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}
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}
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#elif defined(HAVE_UTIME)
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{
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struct utimbuf buf;
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buf.actime = (time_t) (finfo.atime / APR_USEC_PER_SEC);
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buf.modtime = (time_t) (mtime / APR_USEC_PER_SEC);
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if (utime(fname, &buf) == -1) {
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return errno;
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}
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}
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#else
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return APR_ENOTIMPL;
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#endif
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_stat(apr_finfo_t *finfo,
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const char *fname,
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apr_int32_t wanted, apr_pool_t *pool)
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{
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struct_stat info;
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int srv;
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if (wanted & APR_FINFO_LINK)
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srv = lstat(fname, &info);
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else
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srv = stat(fname, &info);
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if (srv == 0) {
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finfo->pool = pool;
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finfo->fname = fname;
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fill_out_finfo(finfo, &info, wanted);
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if (wanted & APR_FINFO_LINK)
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wanted &= ~APR_FINFO_LINK;
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return (wanted & ~finfo->valid) ? APR_INCOMPLETE : APR_SUCCESS;
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}
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else {
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#if !defined(ENOENT) || !defined(ENOTDIR)
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#error ENOENT || ENOTDIR not defined; please see the
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#error comments at this line in the source for a workaround.
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/*
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* If ENOENT || ENOTDIR is not defined in one of the your OS's
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* include files, APR cannot report a good reason why the stat()
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* of the file failed; there are cases where it can fail even though
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* the file exists. This opens holes in Apache, for example, because
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* it becomes possible for someone to get a directory listing of a
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* directory even though there is an index (eg. index.html) file in
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* it. If you do not have a problem with this, delete the above
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* #error lines and start the compile again. If you need to do this,
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* please submit a bug report to http://www.apache.org/bug_report.html
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* letting us know that you needed to do this. Please be sure to
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* include the operating system you are using.
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*/
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/* WARNING: All errors will be handled as not found
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*/
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#if !defined(ENOENT)
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return APR_ENOENT;
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#else
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/* WARNING: All errors but not found will be handled as not directory
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*/
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if (errno != ENOENT)
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return APR_ENOENT;
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else
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return errno;
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#endif
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#else /* All was defined well, report the usual: */
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return errno;
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#endif
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}
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}
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