1 /*
2 * Copyright (C) 2007-2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * 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 #if defined(_WIN32)
18
19 #include <unistd.h>
20
21 #include <log/uio.h>
22
23 #include "log_portability.h"
24
readv(int fd,struct iovec * vecs,int count)25 LIBLOG_ABI_PUBLIC int readv(int fd, struct iovec* vecs, int count) {
26 int total = 0;
27
28 for (; count > 0; count--, vecs++) {
29 char* buf = vecs->iov_base;
30 int len = vecs->iov_len;
31
32 while (len > 0) {
33 int ret = read(fd, buf, len);
34 if (ret < 0) {
35 if (total == 0) total = -1;
36 goto Exit;
37 }
38 if (ret == 0) goto Exit;
39
40 total += ret;
41 buf += ret;
42 len -= ret;
43 }
44 }
45 Exit:
46 return total;
47 }
48
writev(int fd,const struct iovec * vecs,int count)49 LIBLOG_ABI_PUBLIC int writev(int fd, const struct iovec* vecs, int count) {
50 int total = 0;
51
52 for (; count > 0; count--, vecs++) {
53 const char* buf = vecs->iov_base;
54 int len = vecs->iov_len;
55
56 while (len > 0) {
57 int ret = write(fd, buf, len);
58 if (ret < 0) {
59 if (total == 0) total = -1;
60 goto Exit;
61 }
62 if (ret == 0) goto Exit;
63
64 total += ret;
65 buf += ret;
66 len -= ret;
67 }
68 }
69 Exit:
70 return total;
71 }
72
73 #endif
74