The Tor Browser / file comparison
comparison: toolkit/crashreporter/google-breakpad/src/common/tests/file_utils.cc
toolkit/crashreporter/google-breakpad/src/common/tests/file_utils.cc
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:c7a4ac01144b |
|---|---|
| 1 // Copyright (c) 2011, Google Inc. | |
| 2 // All rights reserved. | |
| 3 // | |
| 4 // Redistribution and use in source and binary forms, with or without | |
| 5 // modification, are permitted provided that the following conditions are | |
| 6 // met: | |
| 7 // | |
| 8 // * Redistributions of source code must retain the above copyright | |
| 9 // notice, this list of conditions and the following disclaimer. | |
| 10 // * Redistributions in binary form must reproduce the above | |
| 11 // copyright notice, this list of conditions and the following disclaimer | |
| 12 // in the documentation and/or other materials provided with the | |
| 13 // distribution. | |
| 14 // * Neither the name of Google Inc. nor the names of its | |
| 15 // contributors may be used to endorse or promote products derived from | |
| 16 // this software without specific prior written permission. | |
| 17 // | |
| 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 | |
| 30 // file_utils.cc: Implement utility functions for file manipulation. | |
| 31 // See file_utils.h for details. | |
| 32 | |
| 33 #include <fcntl.h> | |
| 34 #include <stdio.h> | |
| 35 #include <string.h> | |
| 36 #include <sys/stat.h> | |
| 37 #include <unistd.h> | |
| 38 | |
| 39 #include "common/linux/eintr_wrapper.h" | |
| 40 #include "common/tests/file_utils.h" | |
| 41 | |
| 42 namespace google_breakpad { | |
| 43 | |
| 44 bool CopyFile(const char* from_path, const char* to_path) { | |
| 45 int infile = HANDLE_EINTR(open(from_path, O_RDONLY)); | |
| 46 if (infile < 0) { | |
| 47 perror("open"); | |
| 48 return false; | |
| 49 } | |
| 50 | |
| 51 int outfile = HANDLE_EINTR(creat(to_path, 0666)); | |
| 52 if (outfile < 0) { | |
| 53 perror("creat"); | |
| 54 if (HANDLE_EINTR(close(infile)) < 0) { | |
| 55 perror("close"); | |
| 56 } | |
| 57 return false; | |
| 58 } | |
| 59 | |
| 60 char buffer[1024]; | |
| 61 bool result = true; | |
| 62 | |
| 63 while (result) { | |
| 64 ssize_t bytes_read = HANDLE_EINTR(read(infile, buffer, sizeof(buffer))); | |
| 65 if (bytes_read < 0) { | |
| 66 perror("read"); | |
| 67 result = false; | |
| 68 break; | |
| 69 } | |
| 70 if (bytes_read == 0) | |
| 71 break; | |
| 72 ssize_t bytes_written_per_read = 0; | |
| 73 do { | |
| 74 ssize_t bytes_written_partial = HANDLE_EINTR(write( | |
| 75 outfile, | |
| 76 &buffer[bytes_written_per_read], | |
| 77 bytes_read - bytes_written_per_read)); | |
| 78 if (bytes_written_partial < 0) { | |
| 79 perror("write"); | |
| 80 result = false; | |
| 81 break; | |
| 82 } | |
| 83 bytes_written_per_read += bytes_written_partial; | |
| 84 } while (bytes_written_per_read < bytes_read); | |
| 85 } | |
| 86 | |
| 87 if (HANDLE_EINTR(close(infile)) == -1) { | |
| 88 perror("close"); | |
| 89 result = false; | |
| 90 } | |
| 91 if (HANDLE_EINTR(close(outfile)) == -1) { | |
| 92 perror("close"); | |
| 93 result = false; | |
| 94 } | |
| 95 | |
| 96 return result; | |
| 97 } | |
| 98 | |
| 99 bool ReadFile(const char* path, void* buffer, ssize_t* buffer_size) { | |
| 100 int fd = HANDLE_EINTR(open(path, O_RDONLY)); | |
| 101 if (fd == -1) { | |
| 102 perror("open"); | |
| 103 return false; | |
| 104 } | |
| 105 | |
| 106 bool ok = true; | |
| 107 if (buffer && buffer_size && *buffer_size > 0) { | |
| 108 memset(buffer, 0, sizeof(*buffer_size)); | |
| 109 *buffer_size = HANDLE_EINTR(read(fd, buffer, *buffer_size)); | |
| 110 if (*buffer_size == -1) { | |
| 111 perror("read"); | |
| 112 ok = false; | |
| 113 } | |
| 114 } | |
| 115 if (HANDLE_EINTR(close(fd)) == -1) { | |
| 116 perror("close"); | |
| 117 ok = false; | |
| 118 } | |
| 119 return ok; | |
| 120 } | |
| 121 | |
| 122 bool WriteFile(const char* path, const void* buffer, size_t buffer_size) { | |
| 123 int fd = HANDLE_EINTR(open(path, O_CREAT | O_TRUNC | O_WRONLY, S_IRWXU)); | |
| 124 if (fd == -1) { | |
| 125 perror("open"); | |
| 126 return false; | |
| 127 } | |
| 128 | |
| 129 bool ok = true; | |
| 130 if (buffer) { | |
| 131 size_t bytes_written_total = 0; | |
| 132 ssize_t bytes_written_partial = 0; | |
| 133 const char* data = reinterpret_cast<const char*>(buffer); | |
| 134 while (bytes_written_total < buffer_size) { | |
| 135 bytes_written_partial = | |
| 136 HANDLE_EINTR(write(fd, data + bytes_written_total, | |
| 137 buffer_size - bytes_written_total)); | |
| 138 if (bytes_written_partial < 0) { | |
| 139 perror("write"); | |
| 140 ok = false; | |
| 141 break; | |
| 142 } | |
| 143 bytes_written_total += bytes_written_partial; | |
| 144 } | |
| 145 } | |
| 146 if (HANDLE_EINTR(close(fd)) == -1) { | |
| 147 perror("close"); | |
| 148 ok = false; | |
| 149 } | |
| 150 return ok; | |
| 151 } | |
| 152 | |
| 153 } // namespace google_breakpad |
