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/* Copyright 2000-2004 The Apache Software Foundation
*
* Licensed 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 status;
apr_size_t total = 0;
do {
apr_size_t i, amt;
status = apr_file_writev(thefile, vec, nvec, &amt);
/* We assume that writev will only write complete iovec areas.
* Incomplete writes inside a single area are not supported.
* This should be safe according to SuS v2.
*/
for (i = 0; i < nvec; i++) {
total += vec[i].iov_len;
if (total >= amt) {
vec = &vec[i+1];
nvec -= i+1;
break;
}
}
} while (status == APR_SUCCESS && nvec > 0);
if (bytes_written != NULL)
*bytes_written = total;
return status;
}
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