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 {
27 int total = 0;
28
29 for ( ; count > 0; count--, vecs++ ) {
30 char* buf = vecs->iov_base;
31 int len = vecs->iov_len;
32
33 while (len > 0) {
34 int ret = read( fd, buf, len );
35 if (ret < 0) {
36 if (total == 0)
37 total = -1;
38 goto Exit;
39 }
40 if (ret == 0)
41 goto Exit;
42
43 total += ret;
44 buf += ret;
45 len -= ret;
46 }
47 }
48 Exit:
49 return total;
50 }
51
writev(int fd,const struct iovec * vecs,int count)52 LIBLOG_ABI_PUBLIC int writev(int fd, const struct iovec *vecs, int count)
53 {
54 int total = 0;
55
56 for ( ; count > 0; count--, vecs++ ) {
57 const char* buf = vecs->iov_base;
58 int len = vecs->iov_len;
59
60 while (len > 0) {
61 int ret = write( fd, buf, len );
62 if (ret < 0) {
63 if (total == 0)
64 total = -1;
65 goto Exit;
66 }
67 if (ret == 0)
68 goto Exit;
69
70 total += ret;
71 buf += ret;
72 len -= ret;
73 }
74 }
75 Exit:
76 return total;
77 }
78
79 #endif
80