1 /* Licensed to the Apache Software Foundation (ASF) under one or more 2 * contributor license agreements. See the NOTICE file distributed with 3 * this work for additional information regarding copyright ownership. 4 * The ASF licenses this file to You under the Apache License, Version 2.0 5 * (the "License"); you may not use this file except in compliance with 6 * the License. You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "apr_arch_file_io.h" 18 #include "apr_pools.h" 19 #include "apr_thread_mutex.h" 20 apr_file_buffer_set(apr_file_t * file,char * buffer,apr_size_t bufsize)21APR_DECLARE(apr_status_t) apr_file_buffer_set(apr_file_t *file, 22 char * buffer, 23 apr_size_t bufsize) 24 { 25 apr_status_t rv; 26 27 file_lock(file); 28 29 if(file->buffered) { 30 /* Flush the existing buffer */ 31 rv = apr_file_flush_locked(file); 32 if (rv != APR_SUCCESS) { 33 file_unlock(file); 34 return rv; 35 } 36 } 37 38 file->buffer = buffer; 39 file->bufsize = bufsize; 40 file->buffered = 1; 41 file->bufpos = 0; 42 file->direction = 0; 43 file->dataRead = 0; 44 45 if (file->bufsize == 0) { 46 /* Setting the buffer size to zero is equivalent to turning 47 * buffering off. 48 */ 49 file->buffered = 0; 50 } 51 52 file_unlock(file); 53 54 return APR_SUCCESS; 55 } 56 apr_file_buffer_size_get(apr_file_t * file)57APR_DECLARE(apr_size_t) apr_file_buffer_size_get(apr_file_t *file) 58 { 59 return file->bufsize; 60 } 61