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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/file_util.h" | 5 #include "base/file_util.h" |
6 | 6 |
7 #include <dirent.h> | 7 #include <dirent.h> |
8 #include <errno.h> | 8 #include <errno.h> |
9 #include <fcntl.h> | 9 #include <fcntl.h> |
10 #include <libgen.h> | 10 #include <libgen.h> |
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26 #include "base/mac/foundation_util.h" | 26 #include "base/mac/foundation_util.h" |
27 #elif !defined(OS_CHROMEOS) && defined(USE_GLIB) | 27 #elif !defined(OS_CHROMEOS) && defined(USE_GLIB) |
28 #include <glib.h> // for g_get_home_dir() | 28 #include <glib.h> // for g_get_home_dir() |
29 #endif | 29 #endif |
30 | 30 |
31 #include <fstream> | 31 #include <fstream> |
32 | 32 |
33 #include "base/basictypes.h" | 33 #include "base/basictypes.h" |
34 #include "base/files/file_enumerator.h" | 34 #include "base/files/file_enumerator.h" |
35 #include "base/files/file_path.h" | 35 #include "base/files/file_path.h" |
| 36 #include "base/files/scoped_file.h" |
36 #include "base/logging.h" | 37 #include "base/logging.h" |
37 #include "base/memory/scoped_ptr.h" | 38 #include "base/memory/scoped_ptr.h" |
38 #include "base/memory/singleton.h" | 39 #include "base/memory/singleton.h" |
39 #include "base/path_service.h" | 40 #include "base/path_service.h" |
40 #include "base/posix/eintr_wrapper.h" | 41 #include "base/posix/eintr_wrapper.h" |
41 #include "base/stl_util.h" | 42 #include "base/stl_util.h" |
42 #include "base/strings/string_util.h" | 43 #include "base/strings/string_util.h" |
43 #include "base/strings/stringprintf.h" | 44 #include "base/strings/stringprintf.h" |
44 #include "base/strings/sys_string_conversions.h" | 45 #include "base/strings/sys_string_conversions.h" |
45 #include "base/strings/utf_string_conversions.h" | 46 #include "base/strings/utf_string_conversions.h" |
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165 | 166 |
166 #if defined(OS_LINUX) | 167 #if defined(OS_LINUX) |
167 // Determine if /dev/shm files can be mapped and then mprotect'd PROT_EXEC. | 168 // Determine if /dev/shm files can be mapped and then mprotect'd PROT_EXEC. |
168 // This depends on the mount options used for /dev/shm, which vary among | 169 // This depends on the mount options used for /dev/shm, which vary among |
169 // different Linux distributions and possibly local configuration. It also | 170 // different Linux distributions and possibly local configuration. It also |
170 // depends on details of kernel--ChromeOS uses the noexec option for /dev/shm | 171 // depends on details of kernel--ChromeOS uses the noexec option for /dev/shm |
171 // but its kernel allows mprotect with PROT_EXEC anyway. | 172 // but its kernel allows mprotect with PROT_EXEC anyway. |
172 bool DetermineDevShmExecutable() { | 173 bool DetermineDevShmExecutable() { |
173 bool result = false; | 174 bool result = false; |
174 FilePath path; | 175 FilePath path; |
175 int fd = CreateAndOpenFdForTemporaryFile(FilePath("/dev/shm"), &path); | 176 |
176 if (fd >= 0) { | 177 ScopedFD fd(CreateAndOpenFdForTemporaryFile(FilePath("/dev/shm"), &path)); |
177 file_util::ScopedFD shm_fd_closer(&fd); | 178 if (fd.is_valid()) { |
178 DeleteFile(path, false); | 179 DeleteFile(path, false); |
179 long sysconf_result = sysconf(_SC_PAGESIZE); | 180 long sysconf_result = sysconf(_SC_PAGESIZE); |
180 CHECK_GE(sysconf_result, 0); | 181 CHECK_GE(sysconf_result, 0); |
181 size_t pagesize = static_cast<size_t>(sysconf_result); | 182 size_t pagesize = static_cast<size_t>(sysconf_result); |
182 CHECK_GE(sizeof(pagesize), sizeof(sysconf_result)); | 183 CHECK_GE(sizeof(pagesize), sizeof(sysconf_result)); |
183 void *mapping = mmap(NULL, pagesize, PROT_READ, MAP_SHARED, fd, 0); | 184 void *mapping = mmap(NULL, pagesize, PROT_READ, MAP_SHARED, fd.get(), 0); |
184 if (mapping != MAP_FAILED) { | 185 if (mapping != MAP_FAILED) { |
185 if (mprotect(mapping, pagesize, PROT_READ | PROT_EXEC) == 0) | 186 if (mprotect(mapping, pagesize, PROT_READ | PROT_EXEC) == 0) |
186 result = true; | 187 result = true; |
187 munmap(mapping, pagesize); | 188 munmap(mapping, pagesize); |
188 } | 189 } |
189 } | 190 } |
190 return result; | 191 return result; |
191 } | 192 } |
192 #endif // defined(OS_LINUX) | 193 #endif // defined(OS_LINUX) |
193 | 194 |
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653 if (S_ISLNK(st.st_mode)) | 654 if (S_ISLNK(st.st_mode)) |
654 return true; | 655 return true; |
655 else | 656 else |
656 return false; | 657 return false; |
657 } | 658 } |
658 | 659 |
659 bool GetFileInfo(const FilePath& file_path, File::Info* results) { | 660 bool GetFileInfo(const FilePath& file_path, File::Info* results) { |
660 stat_wrapper_t file_info; | 661 stat_wrapper_t file_info; |
661 #if defined(OS_ANDROID) | 662 #if defined(OS_ANDROID) |
662 if (file_path.IsContentUri()) { | 663 if (file_path.IsContentUri()) { |
663 int fd = OpenContentUriForRead(file_path); | 664 ScopedFD fd(OpenContentUriForRead(file_path)); |
664 if (fd < 0) | 665 if (!fd.is_valid()) |
665 return false; | 666 return false; |
666 file_util::ScopedFD scoped_fd(&fd); | 667 if (CallFstat(fd.get(), &file_info) != 0) |
667 if (CallFstat(fd, &file_info) != 0) | |
668 return false; | 668 return false; |
669 } else { | 669 } else { |
670 #endif // defined(OS_ANDROID) | 670 #endif // defined(OS_ANDROID) |
671 if (CallStat(file_path.value().c_str(), &file_info) != 0) | 671 if (CallStat(file_path.value().c_str(), &file_info) != 0) |
672 return false; | 672 return false; |
673 #if defined(OS_ANDROID) | 673 #if defined(OS_ANDROID) |
674 } | 674 } |
675 #endif // defined(OS_ANDROID) | 675 #endif // defined(OS_ANDROID) |
676 results->is_directory = S_ISDIR(file_info.st_mode); | 676 results->is_directory = S_ISDIR(file_info.st_mode); |
677 results->size = file_info.st_size; | 677 results->size = file_info.st_size; |
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921 result = false; | 921 result = false; |
922 if (IGNORE_EINTR(close(outfile)) < 0) | 922 if (IGNORE_EINTR(close(outfile)) < 0) |
923 result = false; | 923 result = false; |
924 | 924 |
925 return result; | 925 return result; |
926 } | 926 } |
927 #endif // !defined(OS_MACOSX) | 927 #endif // !defined(OS_MACOSX) |
928 | 928 |
929 } // namespace internal | 929 } // namespace internal |
930 } // namespace base | 930 } // namespace base |
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