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Side by Side Diff: util/file/file_writer.cc

Issue 811823003: Cross platform low level file IO wrappers (Closed) Base URL: https://chromium.googlesource.com/crashpad/crashpad@master
Patch Set: . Created 6 years ago
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1 // Copyright 2014 The Crashpad Authors. All rights reserved. 1 // Copyright 2014 The Crashpad Authors. All rights reserved.
2 // 2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License. 4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at 5 // You may obtain a copy of the License at
6 // 6 //
7 // http://www.apache.org/licenses/LICENSE-2.0 7 // http://www.apache.org/licenses/LICENSE-2.0
8 // 8 //
9 // Unless required by applicable law or agreed to in writing, software 9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, 10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and 12 // See the License for the specific language governing permissions and
13 // limitations under the License. 13 // limitations under the License.
14 14
15 #include "util/file/file_writer.h" 15 #include "util/file/file_writer.h"
16 16
17 #include <algorithm> 17 #include <algorithm>
18 18
19 #include <limits.h> 19 #include <limits.h>
20 20
21 #include "base/logging.h" 21 #include "base/logging.h"
22 #include "base/posix/eintr_wrapper.h" 22 #include "base/posix/eintr_wrapper.h"
23 #include "util/file/fd_io.h" 23 #include "util/file/file_io.h"
24 24
25 namespace crashpad { 25 namespace crashpad {
26 26
27 // Ensure type compatibility between WritableIoVec and iovec. 27 // Ensure type compatibility between WritableIoVec and iovec.
28 static_assert(sizeof(WritableIoVec) == sizeof(iovec), "WritableIoVec size"); 28 static_assert(sizeof(WritableIoVec) == sizeof(iovec), "WritableIoVec size");
29 static_assert(offsetof(WritableIoVec, iov_base) == offsetof(iovec, iov_base), 29 static_assert(offsetof(WritableIoVec, iov_base) == offsetof(iovec, iov_base),
30 "WritableIoVec base offset"); 30 "WritableIoVec base offset");
31 static_assert(offsetof(WritableIoVec, iov_len) == offsetof(iovec, iov_len), 31 static_assert(offsetof(WritableIoVec, iov_len) == offsetof(iovec, iov_len),
32 "WritableIoVec len offset"); 32 "WritableIoVec len offset");
33 33
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54 void FileWriter::Close() { 54 void FileWriter::Close() {
55 CHECK(fd_.is_valid()); 55 CHECK(fd_.is_valid());
56 56
57 fd_.reset(); 57 fd_.reset();
58 } 58 }
59 59
60 bool FileWriter::Write(const void* data, size_t size) { 60 bool FileWriter::Write(const void* data, size_t size) {
61 DCHECK(fd_.is_valid()); 61 DCHECK(fd_.is_valid());
62 62
63 // TODO(mark): Write no more than SSIZE_MAX bytes in a single call. 63 // TODO(mark): Write no more than SSIZE_MAX bytes in a single call.
64 ssize_t written = WriteFD(fd_.get(), data, size); 64 ssize_t written = WriteFile(fd_.get(), data, size);
65 if (written < 0) { 65 if (written < 0) {
66 PLOG(ERROR) << "write"; 66 PLOG(ERROR) << "write";
67 return false; 67 return false;
68 } else if (written == 0) { 68 } else if (written == 0) {
69 LOG(ERROR) << "write: returned 0"; 69 LOG(ERROR) << "write: returned 0";
70 return false; 70 return false;
71 } 71 }
72 72
73 return true; 73 return true;
74 } 74 }
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142 142
143 off_t rv = lseek(fd_.get(), offset, whence); 143 off_t rv = lseek(fd_.get(), offset, whence);
144 if (rv < 0) { 144 if (rv < 0) {
145 PLOG(ERROR) << "lseek"; 145 PLOG(ERROR) << "lseek";
146 } 146 }
147 147
148 return rv; 148 return rv;
149 } 149 }
150 150
151 } // namespace crashpad 151 } // namespace crashpad
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