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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr_file_io.h"
APR_DECLARE(apr_status_t) apr_file_read_full(apr_file_t *thefile, void *buf,
apr_size_t nbytes,
apr_size_t *bytes_read)
{
apr_status_t status;
apr_size_t total_read = 0;
do {
apr_size_t amt = nbytes;
status = apr_file_read(thefile, buf, &amt);
buf = (char *)buf + amt;
nbytes -= amt;
total_read += amt;
} while (status == APR_SUCCESS && nbytes > 0);
if (bytes_read != NULL)
*bytes_read = total_read;
return status;
}
APR_DECLARE(apr_status_t) apr_file_write_full(apr_file_t *thefile,
const void *buf,
apr_size_t nbytes,
apr_size_t *bytes_written)
{
apr_status_t status;
apr_size_t total_written = 0;
do {
apr_size_t amt = nbytes;
status = apr_file_write(thefile, buf, &amt);
buf = (char *)buf + amt;
nbytes -= amt;
total_written += amt;
} while (status == APR_SUCCESS && nbytes > 0);
if (bytes_written != NULL)
*bytes_written = total_written;
return status;
}
APR_DECLARE(apr_status_t) apr_file_writev_full(apr_file_t *thefile,
const struct iovec *vec,
apr_size_t nvec,
apr_size_t *bytes_written)
{
apr_status_t rv = APR_SUCCESS;
apr_size_t i;
apr_size_t amt = 0;
apr_size_t total = 0;
for (i = 0; i < nvec; i++) {
total += vec[i].iov_len;
}
rv = apr_file_writev(thefile, vec, nvec, &amt);
if (bytes_written != NULL)
*bytes_written = amt;
if (rv != APR_SUCCESS || (amt == total)) {
return rv;
}
for (i = 0; i < nvec && amt; i++) {
if (amt >= vec[i].iov_len) {
amt -= vec[i].iov_len;
}
else {
break;
}
}
if (amt) {
rv = apr_file_write_full(thefile, (const char *)vec[i].iov_base + amt,
vec[i].iov_len - amt, NULL);
}
for (; i < nvec && rv == APR_SUCCESS; i++) {
rv = apr_file_write_full(thefile, vec[i].iov_base,
vec[i].iov_len, &amt);
}
if (bytes_written != NULL)
*bytes_written = total;
return rv;
}
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