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_file_io.h"
18
19
apr_file_read_full(apr_file_t * thefile,void * buf,apr_size_t nbytes,apr_size_t * bytes_read)20 APR_DECLARE(apr_status_t) apr_file_read_full(apr_file_t *thefile, void *buf,
21 apr_size_t nbytes,
22 apr_size_t *bytes_read)
23 {
24 apr_status_t status;
25 apr_size_t total_read = 0;
26
27 do {
28 apr_size_t amt = nbytes;
29
30 status = apr_file_read(thefile, buf, &amt);
31 buf = (char *)buf + amt;
32 nbytes -= amt;
33 total_read += amt;
34 } while (status == APR_SUCCESS && nbytes > 0);
35
36 if (bytes_read != NULL)
37 *bytes_read = total_read;
38
39 return status;
40 }
41
apr_file_write_full(apr_file_t * thefile,const void * buf,apr_size_t nbytes,apr_size_t * bytes_written)42 APR_DECLARE(apr_status_t) apr_file_write_full(apr_file_t *thefile,
43 const void *buf,
44 apr_size_t nbytes,
45 apr_size_t *bytes_written)
46 {
47 apr_status_t status;
48 apr_size_t total_written = 0;
49
50 do {
51 apr_size_t amt = nbytes;
52
53 status = apr_file_write(thefile, buf, &amt);
54 buf = (char *)buf + amt;
55 nbytes -= amt;
56 total_written += amt;
57 } while (status == APR_SUCCESS && nbytes > 0);
58
59 if (bytes_written != NULL)
60 *bytes_written = total_written;
61
62 return status;
63 }
64
apr_file_writev_full(apr_file_t * thefile,const struct iovec * vec,apr_size_t nvec,apr_size_t * bytes_written)65 APR_DECLARE(apr_status_t) apr_file_writev_full(apr_file_t *thefile,
66 const struct iovec *vec,
67 apr_size_t nvec,
68 apr_size_t *bytes_written)
69 {
70 apr_status_t rv = APR_SUCCESS;
71 apr_size_t i;
72 apr_size_t amt = 0;
73 apr_size_t total = 0;
74
75 for (i = 0; i < nvec && rv == APR_SUCCESS; i++) {
76 rv = apr_file_write_full(thefile, vec[i].iov_base,
77 vec[i].iov_len, &amt);
78 total += amt;
79 }
80
81 if (bytes_written != NULL)
82 *bytes_written = total;
83
84 return rv;
85 }
86