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73 lines
1.6 KiB
73 lines
1.6 KiB
/* |
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* Copyright (C) 2007-2014 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#if defined(_WIN32) |
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#include <unistd.h> |
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#include <log/uio.h> |
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#include "log_portability.h" |
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LIBLOG_ABI_PUBLIC int readv(int fd, struct iovec* vecs, int count) { |
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int total = 0; |
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for (; count > 0; count--, vecs++) { |
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char* buf = vecs->iov_base; |
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int len = vecs->iov_len; |
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while (len > 0) { |
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int ret = read(fd, buf, len); |
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if (ret < 0) { |
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if (total == 0) total = -1; |
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goto Exit; |
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} |
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if (ret == 0) goto Exit; |
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total += ret; |
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buf += ret; |
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len -= ret; |
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} |
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} |
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Exit: |
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return total; |
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} |
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LIBLOG_ABI_PUBLIC int writev(int fd, const struct iovec* vecs, int count) { |
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int total = 0; |
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for (; count > 0; count--, vecs++) { |
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const char* buf = vecs->iov_base; |
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int len = vecs->iov_len; |
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while (len > 0) { |
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int ret = write(fd, buf, len); |
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if (ret < 0) { |
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if (total == 0) total = -1; |
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goto Exit; |
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} |
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if (ret == 0) goto Exit; |
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total += ret; |
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buf += ret; |
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len -= ret; |
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} |
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} |
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Exit: |
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return total; |
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} |
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#endif
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