119 lines
4.2 KiB
C
119 lines
4.2 KiB
C
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/* 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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static apr_status_t apr_file_transfer_contents(const char *from_path,
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const char *to_path,
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apr_int32_t flags,
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apr_fileperms_t to_perms,
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apr_pool_t *pool)
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{
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apr_file_t *s, *d;
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apr_status_t status;
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apr_finfo_t finfo;
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apr_fileperms_t perms;
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/* Open source file. */
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status = apr_file_open(&s, from_path, APR_FOPEN_READ, APR_OS_DEFAULT, pool);
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if (status)
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return status;
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/* Maybe get its permissions. */
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if (to_perms == APR_FILE_SOURCE_PERMS) {
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status = apr_file_info_get(&finfo, APR_FINFO_PROT, s);
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if (status != APR_SUCCESS && status != APR_INCOMPLETE) {
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apr_file_close(s); /* toss any error */
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return status;
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}
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perms = finfo.protection;
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}
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else
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perms = to_perms;
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/* Open dest file. */
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status = apr_file_open(&d, to_path, flags, perms, pool);
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if (status) {
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apr_file_close(s); /* toss any error */
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return status;
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}
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#if BUFSIZ > APR_FILE_DEFAULT_BUFSIZE
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#define COPY_BUFSIZ BUFSIZ
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#else
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#define COPY_BUFSIZ APR_FILE_DEFAULT_BUFSIZE
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#endif
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/* Copy bytes till the cows come home. */
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while (1) {
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char buf[COPY_BUFSIZ];
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apr_size_t bytes_this_time = sizeof(buf);
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apr_status_t read_err;
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apr_status_t write_err;
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/* Read 'em. */
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read_err = apr_file_read(s, buf, &bytes_this_time);
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if (read_err && !APR_STATUS_IS_EOF(read_err)) {
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apr_file_close(s); /* toss any error */
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apr_file_close(d); /* toss any error */
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return read_err;
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}
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/* Write 'em. */
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write_err = apr_file_write_full(d, buf, bytes_this_time, NULL);
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if (write_err) {
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apr_file_close(s); /* toss any error */
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apr_file_close(d); /* toss any error */
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return write_err;
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}
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if (read_err && APR_STATUS_IS_EOF(read_err)) {
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status = apr_file_close(s);
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if (status) {
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apr_file_close(d); /* toss any error */
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return status;
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}
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/* return the results of this close: an error, or success */
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return apr_file_close(d);
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}
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}
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/* NOTREACHED */
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}
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APR_DECLARE(apr_status_t) apr_file_copy(const char *from_path,
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const char *to_path,
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apr_fileperms_t perms,
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apr_pool_t *pool)
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{
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return apr_file_transfer_contents(from_path, to_path,
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(APR_FOPEN_WRITE | APR_FOPEN_CREATE | APR_FOPEN_TRUNCATE),
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perms,
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pool);
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}
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APR_DECLARE(apr_status_t) apr_file_append(const char *from_path,
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const char *to_path,
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apr_fileperms_t perms,
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apr_pool_t *pool)
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{
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return apr_file_transfer_contents(from_path, to_path,
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(APR_FOPEN_WRITE | APR_FOPEN_CREATE | APR_FOPEN_APPEND),
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perms,
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pool);
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}
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