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/*
* Copyright (C) 2007-2014 The Android Open Source Project
*
* 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.
*/
#if defined(_WIN32)
#include <unistd.h>
#include <log/uio.h>
#include "log_portability.h"
LIBLOG_ABI_PUBLIC int readv(int fd, struct iovec* vecs, int count) {
int total = 0;
for (; count > 0; count--, vecs++) {
char* buf = vecs->iov_base;
int len = vecs->iov_len;
while (len > 0) {
int ret = read(fd, buf, len);
if (ret < 0) {
if (total == 0) total = -1;
goto Exit;
}
if (ret == 0) goto Exit;
total += ret;
buf += ret;
len -= ret;
}
}
Exit:
return total;
}
LIBLOG_ABI_PUBLIC int writev(int fd, const struct iovec* vecs, int count) {
int total = 0;
for (; count > 0; count--, vecs++) {
const char* buf = vecs->iov_base;
int len = vecs->iov_len;
while (len > 0) {
int ret = write(fd, buf, len);
if (ret < 0) {
if (total == 0) total = -1;
goto Exit;
}
if (ret == 0) goto Exit;
total += ret;
buf += ret;
len -= ret;
}
}
Exit:
return total;
}
#endif
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