tzik@chromium.org | f586495 | 2012-03-10 09:18:31 +0900 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "base/file_util.h" |
| 6 | |
evan@chromium.org | 3730132 | 2009-04-21 10:50:39 +0900 | [diff] [blame] | 7 | #include <dirent.h> |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 8 | #include <errno.h> |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 9 | #include <fcntl.h> |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 10 | #include <libgen.h> |
skerner@chromium.org | 5f3c456 | 2010-05-13 06:36:39 +0900 | [diff] [blame] | 11 | #include <limits.h> |
mark@chromium.org | d1bafc6 | 2008-10-02 02:40:13 +0900 | [diff] [blame] | 12 | #include <stdio.h> |
evan@chromium.org | 73aec0e | 2010-04-23 08:28:05 +0900 | [diff] [blame] | 13 | #include <stdlib.h> |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 14 | #include <string.h> |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 15 | #include <sys/errno.h> |
estade@chromium.org | 2c23353 | 2008-12-13 08:43:03 +0900 | [diff] [blame] | 16 | #include <sys/mman.h> |
skerner@chromium.org | 559baa9 | 2010-05-13 00:13:57 +0900 | [diff] [blame] | 17 | #include <sys/param.h> |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 18 | #include <sys/stat.h> |
jochen@chromium.org | a687977 | 2010-02-18 19:02:26 +0900 | [diff] [blame] | 19 | #include <sys/time.h> |
evan@chromium.org | 3730132 | 2009-04-21 10:50:39 +0900 | [diff] [blame] | 20 | #include <sys/types.h> |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 21 | #include <time.h> |
evan@chromium.org | 3730132 | 2009-04-21 10:50:39 +0900 | [diff] [blame] | 22 | #include <unistd.h> |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 23 | |
mark@chromium.org | 0e56c16 | 2009-09-17 02:31:25 +0900 | [diff] [blame] | 24 | #if defined(OS_MACOSX) |
| 25 | #include <AvailabilityMacros.h> |
mark@chromium.org | 13aa8aa | 2011-04-22 13:15:13 +0900 | [diff] [blame] | 26 | #include "base/mac/foundation_util.h" |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 27 | #elif !defined(OS_ANDROID) |
evan@chromium.org | 73aec0e | 2010-04-23 08:28:05 +0900 | [diff] [blame] | 28 | #include <glib.h> |
mark@chromium.org | 0e56c16 | 2009-09-17 02:31:25 +0900 | [diff] [blame] | 29 | #endif |
| 30 | |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 31 | #include <fstream> |
| 32 | |
| 33 | #include "base/basictypes.h" |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 34 | #include "base/files/file_enumerator.h" |
brettw@chromium.org | 59eef1f | 2013-02-24 14:40:52 +0900 | [diff] [blame] | 35 | #include "base/files/file_path.h" |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 36 | #include "base/logging.h" |
levin@chromium.org | 5c52868 | 2011-03-28 10:54:15 +0900 | [diff] [blame] | 37 | #include "base/memory/scoped_ptr.h" |
| 38 | #include "base/memory/singleton.h" |
nileshagrawal@chromium.org | 62001b9 | 2012-05-18 05:09:06 +0900 | [diff] [blame] | 39 | #include "base/path_service.h" |
brettw@chromium.org | b1788fb | 2012-11-15 05:54:35 +0900 | [diff] [blame] | 40 | #include "base/posix/eintr_wrapper.h" |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 41 | #include "base/stl_util.h" |
avi@chromium.org | 94bd573 | 2013-06-11 22:36:37 +0900 | [diff] [blame] | 42 | #include "base/strings/string_util.h" |
| 43 | #include "base/strings/stringprintf.h" |
brettw@chromium.org | 1f67a91 | 2013-02-08 04:18:03 +0900 | [diff] [blame] | 44 | #include "base/strings/sys_string_conversions.h" |
avi@chromium.org | 17f6062 | 2013-06-08 03:37:07 +0900 | [diff] [blame] | 45 | #include "base/strings/utf_string_conversions.h" |
brettw@chromium.org | 5b5f5e0 | 2011-01-01 10:01:06 +0900 | [diff] [blame] | 46 | #include "base/threading/thread_restrictions.h" |
avi@chromium.org | b039e8b | 2013-06-28 09:49:07 +0900 | [diff] [blame] | 47 | #include "base/time/time.h" |
estade@chromium.org | 868ecbc | 2009-06-24 12:29:26 +0900 | [diff] [blame] | 48 | |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 49 | #if defined(OS_ANDROID) |
| 50 | #include "base/os_compat_android.h" |
| 51 | #endif |
| 52 | |
qsr@chromium.org | 4ab5de9 | 2012-07-09 23:40:39 +0900 | [diff] [blame] | 53 | #if !defined(OS_IOS) |
| 54 | #include <grp.h> |
| 55 | #endif |
| 56 | |
haruki@chromium.org | 712ff26 | 2012-08-06 18:14:44 +0900 | [diff] [blame] | 57 | #if defined(OS_CHROMEOS) |
| 58 | #include "base/chromeos/chromeos_version.h" |
| 59 | #endif |
| 60 | |
brettw@chromium.org | 99b198e | 2013-04-12 14:17:15 +0900 | [diff] [blame] | 61 | namespace base { |
| 62 | |
skerner@chromium.org | 8bbe5be | 2010-06-10 07:56:48 +0900 | [diff] [blame] | 63 | namespace { |
| 64 | |
rsesek@chromium.org | dc818ac | 2012-07-20 07:24:02 +0900 | [diff] [blame] | 65 | #if defined(OS_BSD) || defined(OS_MACOSX) |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 66 | typedef struct stat stat_wrapper_t; |
| 67 | static int CallStat(const char *path, stat_wrapper_t *sb) { |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 68 | ThreadRestrictions::AssertIOAllowed(); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 69 | return stat(path, sb); |
| 70 | } |
| 71 | static int CallLstat(const char *path, stat_wrapper_t *sb) { |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 72 | ThreadRestrictions::AssertIOAllowed(); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 73 | return lstat(path, sb); |
| 74 | } |
| 75 | #else |
| 76 | typedef struct stat64 stat_wrapper_t; |
| 77 | static int CallStat(const char *path, stat_wrapper_t *sb) { |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 78 | ThreadRestrictions::AssertIOAllowed(); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 79 | return stat64(path, sb); |
| 80 | } |
| 81 | static int CallLstat(const char *path, stat_wrapper_t *sb) { |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 82 | ThreadRestrictions::AssertIOAllowed(); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 83 | return lstat64(path, sb); |
| 84 | } |
| 85 | #endif |
| 86 | |
skerner@chromium.org | 8bbe5be | 2010-06-10 07:56:48 +0900 | [diff] [blame] | 87 | // Helper for NormalizeFilePath(), defined below. |
| 88 | bool RealPath(const FilePath& path, FilePath* real_path) { |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 89 | ThreadRestrictions::AssertIOAllowed(); // For realpath(). |
skerner@chromium.org | 8bbe5be | 2010-06-10 07:56:48 +0900 | [diff] [blame] | 90 | FilePath::CharType buf[PATH_MAX]; |
| 91 | if (!realpath(path.value().c_str(), buf)) |
| 92 | return false; |
| 93 | |
| 94 | *real_path = FilePath(buf); |
| 95 | return true; |
| 96 | } |
| 97 | |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 98 | // Helper for VerifyPathControlledByUser. |
| 99 | bool VerifySpecificPathControlledByUser(const FilePath& path, |
| 100 | uid_t owner_uid, |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 101 | const std::set<gid_t>& group_gids) { |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 102 | stat_wrapper_t stat_info; |
| 103 | if (CallLstat(path.value().c_str(), &stat_info) != 0) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 104 | DPLOG(ERROR) << "Failed to get information on path " |
| 105 | << path.value(); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 106 | return false; |
| 107 | } |
skerner@chromium.org | 8bbe5be | 2010-06-10 07:56:48 +0900 | [diff] [blame] | 108 | |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 109 | if (S_ISLNK(stat_info.st_mode)) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 110 | DLOG(ERROR) << "Path " << path.value() |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 111 | << " is a symbolic link."; |
| 112 | return false; |
| 113 | } |
| 114 | |
| 115 | if (stat_info.st_uid != owner_uid) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 116 | DLOG(ERROR) << "Path " << path.value() |
| 117 | << " is owned by the wrong user."; |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 118 | return false; |
| 119 | } |
| 120 | |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 121 | if ((stat_info.st_mode & S_IWGRP) && |
| 122 | !ContainsKey(group_gids, stat_info.st_gid)) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 123 | DLOG(ERROR) << "Path " << path.value() |
| 124 | << " is writable by an unprivileged group."; |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 125 | return false; |
| 126 | } |
| 127 | |
| 128 | if (stat_info.st_mode & S_IWOTH) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 129 | DLOG(ERROR) << "Path " << path.value() |
| 130 | << " is writable by any user."; |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 131 | return false; |
| 132 | } |
| 133 | |
| 134 | return true; |
benl@chromium.org | 6b6b216 | 2009-09-08 01:39:46 +0900 | [diff] [blame] | 135 | } |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 136 | |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 137 | std::string TempFileName() { |
| 138 | #if defined(OS_MACOSX) |
| 139 | return StringPrintf(".%s.XXXXXX", base::mac::BaseBundleID()); |
| 140 | #endif |
| 141 | |
| 142 | #if defined(GOOGLE_CHROME_BUILD) |
| 143 | return std::string(".com.google.Chrome.XXXXXX"); |
| 144 | #else |
| 145 | return std::string(".org.chromium.Chromium.XXXXXX"); |
| 146 | #endif |
| 147 | } |
| 148 | |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 149 | } // namespace |
benl@chromium.org | 6b6b216 | 2009-09-08 01:39:46 +0900 | [diff] [blame] | 150 | |
brettw@chromium.org | e9f9948 | 2013-07-02 04:41:02 +0900 | [diff] [blame] | 151 | FilePath MakeAbsoluteFilePath(const FilePath& input) { |
| 152 | ThreadRestrictions::AssertIOAllowed(); |
| 153 | char full_path[PATH_MAX]; |
| 154 | if (realpath(input.value().c_str(), full_path) == NULL) |
| 155 | return FilePath(); |
| 156 | return FilePath(full_path); |
mark@chromium.org | 13aa8aa | 2011-04-22 13:15:13 +0900 | [diff] [blame] | 157 | } |
mark@chromium.org | 8ca0d27 | 2008-09-12 02:36:23 +0900 | [diff] [blame] | 158 | |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 159 | // TODO(erikkay): The Windows version of this accepts paths like "foo/bar/*" |
| 160 | // which works both with and without the recursive flag. I'm not sure we need |
| 161 | // that functionality. If not, remove from file_util_win.cc, otherwise add it |
| 162 | // here. |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 163 | bool Delete(const FilePath& path, bool recursive) { |
brettw@chromium.org | e9f9948 | 2013-07-02 04:41:02 +0900 | [diff] [blame] | 164 | ThreadRestrictions::AssertIOAllowed(); |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 165 | const char* path_str = path.value().c_str(); |
benl@chromium.org | 6b6b216 | 2009-09-08 01:39:46 +0900 | [diff] [blame] | 166 | stat_wrapper_t file_info; |
yoshiki@chromium.org | 45cbd63 | 2012-06-30 14:26:59 +0900 | [diff] [blame] | 167 | int test = CallLstat(path_str, &file_info); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 168 | if (test != 0) { |
| 169 | // The Windows version defines this condition as success. |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 170 | bool ret = (errno == ENOENT || errno == ENOTDIR); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 171 | return ret; |
| 172 | } |
| 173 | if (!S_ISDIR(file_info.st_mode)) |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 174 | return (unlink(path_str) == 0); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 175 | if (!recursive) |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 176 | return (rmdir(path_str) == 0); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 177 | |
| 178 | bool success = true; |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 179 | std::stack<std::string> directories; |
| 180 | directories.push(path.value()); |
haruki@chromium.org | 0e1a70b | 2012-08-12 10:57:23 +0900 | [diff] [blame] | 181 | FileEnumerator traversal(path, true, |
| 182 | FileEnumerator::FILES | FileEnumerator::DIRECTORIES | |
| 183 | FileEnumerator::SHOW_SYM_LINKS); |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 184 | for (FilePath current = traversal.Next(); success && !current.empty(); |
| 185 | current = traversal.Next()) { |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 186 | if (traversal.GetInfo().IsDirectory()) |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 187 | directories.push(current.value()); |
| 188 | else |
| 189 | success = (unlink(current.value().c_str()) == 0); |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 190 | } |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 191 | |
| 192 | while (success && !directories.empty()) { |
| 193 | FilePath dir = FilePath(directories.top()); |
| 194 | directories.pop(); |
| 195 | success = (rmdir(dir.value().c_str()) == 0); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 196 | } |
| 197 | return success; |
| 198 | } |
| 199 | |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 200 | bool ReplaceFile(const FilePath& from_path, |
| 201 | const FilePath& to_path, |
| 202 | PlatformFileError* error) { |
| 203 | ThreadRestrictions::AssertIOAllowed(); |
dgrogan@chromium.org | 38fc56d | 2013-05-09 07:02:36 +0900 | [diff] [blame] | 204 | if (rename(from_path.value().c_str(), to_path.value().c_str()) == 0) |
| 205 | return true; |
| 206 | if (error) |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 207 | *error = ErrnoToPlatformFileError(errno); |
dgrogan@chromium.org | 38fc56d | 2013-05-09 07:02:36 +0900 | [diff] [blame] | 208 | return false; |
phajdan.jr@chromium.org | d86bea0 | 2009-05-20 02:21:07 +0900 | [diff] [blame] | 209 | } |
| 210 | |
dbeam@chromium.org | 85aa52a | 2013-05-08 14:46:20 +0900 | [diff] [blame] | 211 | bool CopyDirectory(const FilePath& from_path, |
| 212 | const FilePath& to_path, |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 213 | bool recursive) { |
brettw@chromium.org | aecf7a3 | 2013-07-10 02:42:26 +0900 | [diff] [blame] | 214 | ThreadRestrictions::AssertIOAllowed(); |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 215 | // Some old callers of CopyDirectory want it to support wildcards. |
| 216 | // After some discussion, we decided to fix those callers. |
| 217 | // Break loudly here if anyone tries to do this. |
dbeam@chromium.org | 85aa52a | 2013-05-08 14:46:20 +0900 | [diff] [blame] | 218 | // TODO(evanm): remove this once we're sure it's ok. |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 219 | DCHECK(to_path.value().find('*') == std::string::npos); |
| 220 | DCHECK(from_path.value().find('*') == std::string::npos); |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 221 | |
| 222 | char top_dir[PATH_MAX]; |
brettw@chromium.org | aecf7a3 | 2013-07-10 02:42:26 +0900 | [diff] [blame] | 223 | if (strlcpy(top_dir, from_path.value().c_str(), |
| 224 | arraysize(top_dir)) >= arraysize(top_dir)) { |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 225 | return false; |
| 226 | } |
| 227 | |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 228 | // This function does not properly handle destinations within the source |
| 229 | FilePath real_to_path = to_path; |
brettw@chromium.org | 10b6412 | 2013-07-12 02:36:07 +0900 | [diff] [blame^] | 230 | if (PathExists(real_to_path)) { |
brettw@chromium.org | 99b198e | 2013-04-12 14:17:15 +0900 | [diff] [blame] | 231 | real_to_path = MakeAbsoluteFilePath(real_to_path); |
| 232 | if (real_to_path.empty()) |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 233 | return false; |
| 234 | } else { |
brettw@chromium.org | 99b198e | 2013-04-12 14:17:15 +0900 | [diff] [blame] | 235 | real_to_path = MakeAbsoluteFilePath(real_to_path.DirName()); |
| 236 | if (real_to_path.empty()) |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 237 | return false; |
| 238 | } |
brettw@chromium.org | 99b198e | 2013-04-12 14:17:15 +0900 | [diff] [blame] | 239 | FilePath real_from_path = MakeAbsoluteFilePath(from_path); |
| 240 | if (real_from_path.empty()) |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 241 | return false; |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 242 | if (real_to_path.value().size() >= real_from_path.value().size() && |
| 243 | real_to_path.value().compare(0, real_from_path.value().size(), |
| 244 | real_from_path.value()) == 0) |
| 245 | return false; |
| 246 | |
| 247 | bool success = true; |
haruki@chromium.org | 0e1a70b | 2012-08-12 10:57:23 +0900 | [diff] [blame] | 248 | int traverse_type = FileEnumerator::FILES | FileEnumerator::SHOW_SYM_LINKS; |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 249 | if (recursive) |
haruki@chromium.org | 0e1a70b | 2012-08-12 10:57:23 +0900 | [diff] [blame] | 250 | traverse_type |= FileEnumerator::DIRECTORIES; |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 251 | FileEnumerator traversal(from_path, recursive, traverse_type); |
| 252 | |
vandebo@chromium.org | 70cf3f1 | 2009-10-14 02:57:27 +0900 | [diff] [blame] | 253 | // We have to mimic windows behavior here. |to_path| may not exist yet, |
vandebo@chromium.org | c0cf77e | 2009-10-15 10:11:44 +0900 | [diff] [blame] | 254 | // start the loop with |to_path|. |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 255 | struct stat from_stat; |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 256 | FilePath current = from_path; |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 257 | if (stat(from_path.value().c_str(), &from_stat) < 0) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 258 | DLOG(ERROR) << "CopyDirectory() couldn't stat source directory: " |
| 259 | << from_path.value() << " errno = " << errno; |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 260 | success = false; |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 261 | } |
vandebo@chromium.org | c0cf77e | 2009-10-15 10:11:44 +0900 | [diff] [blame] | 262 | struct stat to_path_stat; |
| 263 | FilePath from_path_base = from_path; |
| 264 | if (recursive && stat(to_path.value().c_str(), &to_path_stat) == 0 && |
| 265 | S_ISDIR(to_path_stat.st_mode)) { |
| 266 | // If the destination already exists and is a directory, then the |
| 267 | // top level of source needs to be copied. |
| 268 | from_path_base = from_path.DirName(); |
| 269 | } |
| 270 | |
| 271 | // The Windows version of this function assumes that non-recursive calls |
| 272 | // will always have a directory for from_path. |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 273 | DCHECK(recursive || S_ISDIR(from_stat.st_mode)); |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 274 | |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 275 | while (success && !current.empty()) { |
aedla@chromium.org | fef1a20 | 2013-01-30 20:38:02 +0900 | [diff] [blame] | 276 | // current is the source path, including from_path, so append |
| 277 | // the suffix after from_path to to_path to create the target_path. |
| 278 | FilePath target_path(to_path); |
| 279 | if (from_path_base != current) { |
| 280 | if (!from_path_base.AppendRelativePath(current, &target_path)) { |
| 281 | success = false; |
| 282 | break; |
| 283 | } |
phajdan.jr@chromium.org | ecf5075 | 2009-01-14 03:57:46 +0900 | [diff] [blame] | 284 | } |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 285 | |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 286 | if (S_ISDIR(from_stat.st_mode)) { |
| 287 | if (mkdir(target_path.value().c_str(), from_stat.st_mode & 01777) != 0 && |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 288 | errno != EEXIST) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 289 | DLOG(ERROR) << "CopyDirectory() couldn't create directory: " |
| 290 | << target_path.value() << " errno = " << errno; |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 291 | success = false; |
| 292 | } |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 293 | } else if (S_ISREG(from_stat.st_mode)) { |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 294 | if (!CopyFile(current, target_path)) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 295 | DLOG(ERROR) << "CopyDirectory() couldn't create file: " |
| 296 | << target_path.value(); |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 297 | success = false; |
| 298 | } |
| 299 | } else { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 300 | DLOG(WARNING) << "CopyDirectory() skipping non-regular file: " |
| 301 | << current.value(); |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 302 | } |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 303 | |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 304 | current = traversal.Next(); |
brettw@chromium.org | 5694672 | 2013-06-08 13:53:36 +0900 | [diff] [blame] | 305 | if (!current.empty()) |
| 306 | from_stat = traversal.GetInfo().stat(); |
evanm@google.com | 5c1d39b | 2008-09-19 04:15:54 +0900 | [diff] [blame] | 307 | } |
| 308 | |
thestig@chromium.org | 3217c82 | 2009-08-07 06:23:07 +0900 | [diff] [blame] | 309 | return success; |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 310 | } |
| 311 | |
brettw@chromium.org | 10b6412 | 2013-07-12 02:36:07 +0900 | [diff] [blame^] | 312 | bool PathExists(const FilePath& path) { |
| 313 | ThreadRestrictions::AssertIOAllowed(); |
| 314 | return access(path.value().c_str(), F_OK) == 0; |
| 315 | } |
| 316 | |
brettw@chromium.org | aecf7a3 | 2013-07-10 02:42:26 +0900 | [diff] [blame] | 317 | } // namespace base |
| 318 | |
| 319 | // ----------------------------------------------------------------------------- |
| 320 | |
| 321 | namespace file_util { |
| 322 | |
| 323 | using base::stat_wrapper_t; |
| 324 | using base::CallStat; |
| 325 | using base::CallLstat; |
| 326 | using base::FileEnumerator; |
| 327 | using base::FilePath; |
| 328 | using base::MakeAbsoluteFilePath; |
| 329 | using base::RealPath; |
| 330 | using base::VerifySpecificPathControlledByUser; |
| 331 | |
erikkay@google.com | cce8382 | 2008-12-24 05:20:10 +0900 | [diff] [blame] | 332 | bool PathIsWritable(const FilePath& path) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 333 | base::ThreadRestrictions::AssertIOAllowed(); |
agl@chromium.org | 41e0062 | 2010-05-18 00:01:22 +0900 | [diff] [blame] | 334 | return access(path.value().c_str(), W_OK) == 0; |
erikkay@google.com | cce8382 | 2008-12-24 05:20:10 +0900 | [diff] [blame] | 335 | } |
| 336 | |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 337 | bool DirectoryExists(const FilePath& path) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 338 | base::ThreadRestrictions::AssertIOAllowed(); |
benl@chromium.org | 6b6b216 | 2009-09-08 01:39:46 +0900 | [diff] [blame] | 339 | stat_wrapper_t file_info; |
| 340 | if (CallStat(path.value().c_str(), &file_info) == 0) |
mmoss@google.com | 733df6b | 2008-09-12 01:09:11 +0900 | [diff] [blame] | 341 | return S_ISDIR(file_info.st_mode); |
| 342 | return false; |
| 343 | } |
| 344 | |
phajdan.jr@chromium.org | 2372593 | 2009-04-23 21:38:08 +0900 | [diff] [blame] | 345 | bool ReadFromFD(int fd, char* buffer, size_t bytes) { |
| 346 | size_t total_read = 0; |
| 347 | while (total_read < bytes) { |
agl@chromium.org | d263ad7 | 2009-05-02 06:37:31 +0900 | [diff] [blame] | 348 | ssize_t bytes_read = |
| 349 | HANDLE_EINTR(read(fd, buffer + total_read, bytes - total_read)); |
| 350 | if (bytes_read <= 0) |
phajdan.jr@chromium.org | 2372593 | 2009-04-23 21:38:08 +0900 | [diff] [blame] | 351 | break; |
agl@chromium.org | d263ad7 | 2009-05-02 06:37:31 +0900 | [diff] [blame] | 352 | total_read += bytes_read; |
phajdan.jr@chromium.org | 2372593 | 2009-04-23 21:38:08 +0900 | [diff] [blame] | 353 | } |
| 354 | return total_read == bytes; |
| 355 | } |
| 356 | |
gspencer@chromium.org | 4dcc02c | 2010-11-30 09:43:37 +0900 | [diff] [blame] | 357 | bool CreateSymbolicLink(const FilePath& target_path, |
| 358 | const FilePath& symlink_path) { |
| 359 | DCHECK(!symlink_path.empty()); |
| 360 | DCHECK(!target_path.empty()); |
| 361 | return ::symlink(target_path.value().c_str(), |
| 362 | symlink_path.value().c_str()) != -1; |
| 363 | } |
| 364 | |
| 365 | bool ReadSymbolicLink(const FilePath& symlink_path, |
| 366 | FilePath* target_path) { |
| 367 | DCHECK(!symlink_path.empty()); |
| 368 | DCHECK(target_path); |
| 369 | char buf[PATH_MAX]; |
| 370 | ssize_t count = ::readlink(symlink_path.value().c_str(), buf, arraysize(buf)); |
| 371 | |
gspencer@chromium.org | 3c6690c | 2010-12-04 02:37:54 +0900 | [diff] [blame] | 372 | if (count <= 0) { |
| 373 | target_path->clear(); |
gspencer@chromium.org | 4dcc02c | 2010-11-30 09:43:37 +0900 | [diff] [blame] | 374 | return false; |
gspencer@chromium.org | 3c6690c | 2010-12-04 02:37:54 +0900 | [diff] [blame] | 375 | } |
gspencer@chromium.org | 4dcc02c | 2010-11-30 09:43:37 +0900 | [diff] [blame] | 376 | |
| 377 | *target_path = FilePath(FilePath::StringType(buf, count)); |
gspencer@chromium.org | 4dcc02c | 2010-11-30 09:43:37 +0900 | [diff] [blame] | 378 | return true; |
| 379 | } |
| 380 | |
yoshiki@chromium.org | 670a38f | 2012-07-11 10:24:02 +0900 | [diff] [blame] | 381 | bool GetPosixFilePermissions(const FilePath& path, int* mode) { |
| 382 | base::ThreadRestrictions::AssertIOAllowed(); |
| 383 | DCHECK(mode); |
| 384 | |
| 385 | stat_wrapper_t file_info; |
| 386 | // Uses stat(), because on symbolic link, lstat() does not return valid |
| 387 | // permission bits in st_mode |
| 388 | if (CallStat(path.value().c_str(), &file_info) != 0) |
| 389 | return false; |
| 390 | |
| 391 | *mode = file_info.st_mode & FILE_PERMISSION_MASK; |
| 392 | return true; |
| 393 | } |
| 394 | |
| 395 | bool SetPosixFilePermissions(const FilePath& path, |
| 396 | int mode) { |
| 397 | base::ThreadRestrictions::AssertIOAllowed(); |
| 398 | DCHECK((mode & ~FILE_PERMISSION_MASK) == 0); |
| 399 | |
| 400 | // Calls stat() so that we can preserve the higher bits like S_ISGID. |
| 401 | stat_wrapper_t stat_buf; |
| 402 | if (CallStat(path.value().c_str(), &stat_buf) != 0) |
| 403 | return false; |
| 404 | |
| 405 | // Clears the existing permission bits, and adds the new ones. |
| 406 | mode_t updated_mode_bits = stat_buf.st_mode & ~FILE_PERMISSION_MASK; |
| 407 | updated_mode_bits |= mode & FILE_PERMISSION_MASK; |
| 408 | |
| 409 | if (HANDLE_EINTR(chmod(path.value().c_str(), updated_mode_bits)) != 0) |
| 410 | return false; |
| 411 | |
| 412 | return true; |
| 413 | } |
| 414 | |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 415 | // Creates and opens a temporary file in |directory|, returning the |
erikkay@chromium.org | 3a9a642 | 2009-09-12 02:33:50 +0900 | [diff] [blame] | 416 | // file descriptor. |path| is set to the temporary file path. |
| 417 | // This function does NOT unlink() the file. |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 418 | int CreateAndOpenFdForTemporaryFile(FilePath directory, FilePath* path) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 419 | base::ThreadRestrictions::AssertIOAllowed(); // For call to mkstemp(). |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 420 | *path = directory.Append(base::TempFileName()); |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 421 | const std::string& tmpdir_string = path->value(); |
mark@chromium.org | 8ca0d27 | 2008-09-12 02:36:23 +0900 | [diff] [blame] | 422 | // this should be OK since mkstemp just replaces characters in place |
| 423 | char* buffer = const_cast<char*>(tmpdir_string.c_str()); |
estade@chromium.org | f474a1b | 2008-11-11 09:01:38 +0900 | [diff] [blame] | 424 | |
phajdan.jr@chromium.org | ad50453 | 2011-04-12 15:07:25 +0900 | [diff] [blame] | 425 | return HANDLE_EINTR(mkstemp(buffer)); |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 426 | } |
| 427 | |
erikkay@chromium.org | 18f0dde | 2009-08-19 01:07:55 +0900 | [diff] [blame] | 428 | bool CreateTemporaryFile(FilePath* path) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 429 | base::ThreadRestrictions::AssertIOAllowed(); // For call to close(). |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 430 | FilePath directory; |
| 431 | if (!GetTempDir(&directory)) |
| 432 | return false; |
| 433 | int fd = CreateAndOpenFdForTemporaryFile(directory, path); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 434 | if (fd < 0) |
| 435 | return false; |
phajdan.jr@chromium.org | cad925c | 2011-04-12 15:51:22 +0900 | [diff] [blame] | 436 | ignore_result(HANDLE_EINTR(close(fd))); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 437 | return true; |
| 438 | } |
| 439 | |
mcgrathr@chromium.org | 569a423 | 2011-12-07 03:07:05 +0900 | [diff] [blame] | 440 | FILE* CreateAndOpenTemporaryShmemFile(FilePath* path, bool executable) { |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 441 | FilePath directory; |
mcgrathr@chromium.org | 569a423 | 2011-12-07 03:07:05 +0900 | [diff] [blame] | 442 | if (!GetShmemTempDir(&directory, executable)) |
evan@chromium.org | 2abe0b4 | 2010-06-11 07:56:23 +0900 | [diff] [blame] | 443 | return NULL; |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 444 | |
phajdan.jr@chromium.org | 8139fe1 | 2009-04-28 15:50:36 +0900 | [diff] [blame] | 445 | return CreateAndOpenTemporaryFileInDir(directory, path); |
| 446 | } |
| 447 | |
| 448 | FILE* CreateAndOpenTemporaryFileInDir(const FilePath& dir, FilePath* path) { |
| 449 | int fd = CreateAndOpenFdForTemporaryFile(dir, path); |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 450 | if (fd < 0) |
| 451 | return NULL; |
| 452 | |
phajdan.jr@chromium.org | ae25ba2 | 2011-04-19 04:05:53 +0900 | [diff] [blame] | 453 | FILE* file = fdopen(fd, "a+"); |
| 454 | if (!file) |
| 455 | ignore_result(HANDLE_EINTR(close(fd))); |
| 456 | return file; |
jrg@chromium.org | d505c3a | 2009-02-04 09:58:39 +0900 | [diff] [blame] | 457 | } |
dumi@chromium.org | 13e715d | 2009-09-12 05:06:27 +0900 | [diff] [blame] | 458 | |
| 459 | bool CreateTemporaryFileInDir(const FilePath& dir, FilePath* temp_file) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 460 | base::ThreadRestrictions::AssertIOAllowed(); // For call to close(). |
dumi@chromium.org | 13e715d | 2009-09-12 05:06:27 +0900 | [diff] [blame] | 461 | int fd = CreateAndOpenFdForTemporaryFile(dir, temp_file); |
phajdan.jr@chromium.org | ad50453 | 2011-04-12 15:07:25 +0900 | [diff] [blame] | 462 | return ((fd >= 0) && !HANDLE_EINTR(close(fd))); |
jcampan@chromium.org | bf29e60 | 2008-10-11 03:50:32 +0900 | [diff] [blame] | 463 | } |
| 464 | |
skerner@chromium.org | e443239 | 2010-05-01 02:00:09 +0900 | [diff] [blame] | 465 | static bool CreateTemporaryDirInDirImpl(const FilePath& base_dir, |
| 466 | const FilePath::StringType& name_tmpl, |
| 467 | FilePath* new_dir) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 468 | base::ThreadRestrictions::AssertIOAllowed(); // For call to mkdtemp(). |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 469 | DCHECK(name_tmpl.find("XXXXXX") != FilePath::StringType::npos) |
| 470 | << "Directory name template must contain \"XXXXXX\"."; |
skerner@chromium.org | e443239 | 2010-05-01 02:00:09 +0900 | [diff] [blame] | 471 | |
| 472 | FilePath sub_dir = base_dir.Append(name_tmpl); |
| 473 | std::string sub_dir_string = sub_dir.value(); |
| 474 | |
| 475 | // this should be OK since mkdtemp just replaces characters in place |
| 476 | char* buffer = const_cast<char*>(sub_dir_string.c_str()); |
| 477 | char* dtemp = mkdtemp(buffer); |
evan@chromium.org | 01ec22c | 2010-07-29 06:00:51 +0900 | [diff] [blame] | 478 | if (!dtemp) { |
| 479 | DPLOG(ERROR) << "mkdtemp"; |
skerner@chromium.org | e443239 | 2010-05-01 02:00:09 +0900 | [diff] [blame] | 480 | return false; |
evan@chromium.org | 01ec22c | 2010-07-29 06:00:51 +0900 | [diff] [blame] | 481 | } |
skerner@chromium.org | e443239 | 2010-05-01 02:00:09 +0900 | [diff] [blame] | 482 | *new_dir = FilePath(dtemp); |
| 483 | return true; |
| 484 | } |
| 485 | |
| 486 | bool CreateTemporaryDirInDir(const FilePath& base_dir, |
| 487 | const FilePath::StringType& prefix, |
skerner@chromium.org | bd112ab | 2010-06-30 16:19:11 +0900 | [diff] [blame] | 488 | FilePath* new_dir) { |
skerner@chromium.org | e443239 | 2010-05-01 02:00:09 +0900 | [diff] [blame] | 489 | FilePath::StringType mkdtemp_template = prefix; |
| 490 | mkdtemp_template.append(FILE_PATH_LITERAL("XXXXXX")); |
| 491 | return CreateTemporaryDirInDirImpl(base_dir, mkdtemp_template, new_dir); |
| 492 | } |
| 493 | |
erikkay@google.com | cce8382 | 2008-12-24 05:20:10 +0900 | [diff] [blame] | 494 | bool CreateNewTempDirectory(const FilePath::StringType& prefix, |
| 495 | FilePath* new_temp_path) { |
estade@chromium.org | f474a1b | 2008-11-11 09:01:38 +0900 | [diff] [blame] | 496 | FilePath tmpdir; |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 497 | if (!GetTempDir(&tmpdir)) |
| 498 | return false; |
skerner@chromium.org | e443239 | 2010-05-01 02:00:09 +0900 | [diff] [blame] | 499 | |
brettw@chromium.org | 0878fea | 2013-07-02 08:07:36 +0900 | [diff] [blame] | 500 | return CreateTemporaryDirInDirImpl(tmpdir, base::TempFileName(), |
| 501 | new_temp_path); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 502 | } |
| 503 | |
dgrogan@chromium.org | f772813 | 2013-06-11 12:50:25 +0900 | [diff] [blame] | 504 | bool CreateDirectoryAndGetError(const FilePath& full_path, |
| 505 | base::PlatformFileError* error) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 506 | base::ThreadRestrictions::AssertIOAllowed(); // For call to mkdir(). |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 507 | std::vector<FilePath> subpaths; |
| 508 | |
| 509 | // Collect a list of all parent directories. |
| 510 | FilePath last_path = full_path; |
| 511 | subpaths.push_back(full_path); |
| 512 | for (FilePath path = full_path.DirName(); |
| 513 | path.value() != last_path.value(); path = path.DirName()) { |
| 514 | subpaths.push_back(path); |
| 515 | last_path = path; |
| 516 | } |
| 517 | |
| 518 | // Iterate through the parents and create the missing ones. |
| 519 | for (std::vector<FilePath>::reverse_iterator i = subpaths.rbegin(); |
| 520 | i != subpaths.rend(); ++i) { |
thestig@chromium.org | 2e7eebc | 2010-03-18 06:39:42 +0900 | [diff] [blame] | 521 | if (DirectoryExists(*i)) |
| 522 | continue; |
| 523 | if (mkdir(i->value().c_str(), 0700) == 0) |
| 524 | continue; |
| 525 | // Mkdir failed, but it might have failed with EEXIST, or some other error |
| 526 | // due to the the directory appearing out of thin air. This can occur if |
| 527 | // two processes are trying to create the same file system tree at the same |
| 528 | // time. Check to see if it exists and make sure it is a directory. |
dgrogan@chromium.org | f772813 | 2013-06-11 12:50:25 +0900 | [diff] [blame] | 529 | int saved_errno = errno; |
| 530 | if (!DirectoryExists(*i)) { |
| 531 | if (error) |
| 532 | *error = base::ErrnoToPlatformFileError(saved_errno); |
thestig@chromium.org | 2e7eebc | 2010-03-18 06:39:42 +0900 | [diff] [blame] | 533 | return false; |
dgrogan@chromium.org | f772813 | 2013-06-11 12:50:25 +0900 | [diff] [blame] | 534 | } |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 535 | } |
| 536 | return true; |
| 537 | } |
| 538 | |
jeremya@chromium.org | 0560966 | 2013-04-04 18:05:21 +0900 | [diff] [blame] | 539 | base::FilePath MakeUniqueDirectory(const base::FilePath& path) { |
| 540 | const int kMaxAttempts = 20; |
| 541 | for (int attempts = 0; attempts < kMaxAttempts; attempts++) { |
dcheng@chromium.org | 8164c2c | 2013-04-09 17:46:45 +0900 | [diff] [blame] | 542 | int uniquifier = |
| 543 | GetUniquePathNumber(path, base::FilePath::StringType()); |
jeremya@chromium.org | 0560966 | 2013-04-04 18:05:21 +0900 | [diff] [blame] | 544 | if (uniquifier < 0) |
| 545 | break; |
| 546 | base::FilePath test_path = (uniquifier == 0) ? path : |
| 547 | path.InsertBeforeExtensionASCII( |
| 548 | base::StringPrintf(" (%d)", uniquifier)); |
| 549 | if (mkdir(test_path.value().c_str(), 0777) == 0) |
| 550 | return test_path; |
| 551 | else if (errno != EEXIST) |
| 552 | break; |
| 553 | } |
| 554 | return base::FilePath(); |
| 555 | } |
| 556 | |
rkc@chromium.org | a40af28 | 2011-06-01 08:10:06 +0900 | [diff] [blame] | 557 | // TODO(rkc): Refactor GetFileInfo and FileEnumerator to handle symlinks |
| 558 | // correctly. http://code.google.com/p/chromium-os/issues/detail?id=15948 |
| 559 | bool IsLink(const FilePath& file_path) { |
yoshiki@chromium.org | 45cbd63 | 2012-06-30 14:26:59 +0900 | [diff] [blame] | 560 | stat_wrapper_t st; |
rkc@chromium.org | a40af28 | 2011-06-01 08:10:06 +0900 | [diff] [blame] | 561 | // If we can't lstat the file, it's safe to assume that the file won't at |
| 562 | // least be a 'followable' link. |
yoshiki@chromium.org | 45cbd63 | 2012-06-30 14:26:59 +0900 | [diff] [blame] | 563 | if (CallLstat(file_path.value().c_str(), &st) != 0) |
rkc@chromium.org | a40af28 | 2011-06-01 08:10:06 +0900 | [diff] [blame] | 564 | return false; |
| 565 | |
| 566 | if (S_ISLNK(st.st_mode)) |
| 567 | return true; |
| 568 | else |
| 569 | return false; |
| 570 | } |
| 571 | |
dumi@chromium.org | 97ae261 | 2010-09-03 11:28:37 +0900 | [diff] [blame] | 572 | bool GetFileInfo(const FilePath& file_path, base::PlatformFileInfo* results) { |
benl@chromium.org | 6b6b216 | 2009-09-08 01:39:46 +0900 | [diff] [blame] | 573 | stat_wrapper_t file_info; |
| 574 | if (CallStat(file_path.value().c_str(), &file_info) != 0) |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 575 | return false; |
darin@google.com | 7f479f2 | 2008-09-26 10:04:08 +0900 | [diff] [blame] | 576 | results->is_directory = S_ISDIR(file_info.st_mode); |
| 577 | results->size = file_info.st_size; |
apavlov@chromium.org | 118a901 | 2013-06-10 18:41:35 +0900 | [diff] [blame] | 578 | #if defined(OS_MACOSX) |
| 579 | results->last_modified = base::Time::FromTimeSpec(file_info.st_mtimespec); |
| 580 | results->last_accessed = base::Time::FromTimeSpec(file_info.st_atimespec); |
| 581 | results->creation_time = base::Time::FromTimeSpec(file_info.st_ctimespec); |
| 582 | #elif defined(OS_ANDROID) |
brettw@chromium.org | dbc9b5a | 2009-07-25 01:13:53 +0900 | [diff] [blame] | 583 | results->last_modified = base::Time::FromTimeT(file_info.st_mtime); |
dumi@chromium.org | 97ae261 | 2010-09-03 11:28:37 +0900 | [diff] [blame] | 584 | results->last_accessed = base::Time::FromTimeT(file_info.st_atime); |
| 585 | results->creation_time = base::Time::FromTimeT(file_info.st_ctime); |
apavlov@chromium.org | 118a901 | 2013-06-10 18:41:35 +0900 | [diff] [blame] | 586 | #else |
| 587 | results->last_modified = base::Time::FromTimeSpec(file_info.st_mtim); |
| 588 | results->last_accessed = base::Time::FromTimeSpec(file_info.st_atim); |
| 589 | results->creation_time = base::Time::FromTimeSpec(file_info.st_ctim); |
| 590 | #endif |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 591 | return true; |
| 592 | } |
| 593 | |
phajdan.jr@chromium.org | 99aec93 | 2009-05-15 02:49:23 +0900 | [diff] [blame] | 594 | bool GetInode(const FilePath& path, ino_t* inode) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 595 | base::ThreadRestrictions::AssertIOAllowed(); // For call to stat(). |
phajdan.jr@chromium.org | 99aec93 | 2009-05-15 02:49:23 +0900 | [diff] [blame] | 596 | struct stat buffer; |
| 597 | int result = stat(path.value().c_str(), &buffer); |
| 598 | if (result < 0) |
| 599 | return false; |
| 600 | |
| 601 | *inode = buffer.st_ino; |
| 602 | return true; |
| 603 | } |
| 604 | |
mark@chromium.org | d1bafc6 | 2008-10-02 02:40:13 +0900 | [diff] [blame] | 605 | FILE* OpenFile(const std::string& filename, const char* mode) { |
estade@chromium.org | b1d358a | 2008-11-18 06:01:19 +0900 | [diff] [blame] | 606 | return OpenFile(FilePath(filename), mode); |
mark@chromium.org | d1bafc6 | 2008-10-02 02:40:13 +0900 | [diff] [blame] | 607 | } |
| 608 | |
estade@chromium.org | b1d358a | 2008-11-18 06:01:19 +0900 | [diff] [blame] | 609 | FILE* OpenFile(const FilePath& filename, const char* mode) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 610 | base::ThreadRestrictions::AssertIOAllowed(); |
phajdan.jr@chromium.org | ad50453 | 2011-04-12 15:07:25 +0900 | [diff] [blame] | 611 | FILE* result = NULL; |
| 612 | do { |
| 613 | result = fopen(filename.value().c_str(), mode); |
| 614 | } while (!result && errno == EINTR); |
| 615 | return result; |
mark@chromium.org | d1bafc6 | 2008-10-02 02:40:13 +0900 | [diff] [blame] | 616 | } |
| 617 | |
estade@chromium.org | 9d32ed8 | 2009-01-28 14:47:15 +0900 | [diff] [blame] | 618 | int ReadFile(const FilePath& filename, char* data, int size) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 619 | base::ThreadRestrictions::AssertIOAllowed(); |
phajdan.jr@chromium.org | ad50453 | 2011-04-12 15:07:25 +0900 | [diff] [blame] | 620 | int fd = HANDLE_EINTR(open(filename.value().c_str(), O_RDONLY)); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 621 | if (fd < 0) |
| 622 | return -1; |
estade@chromium.org | b1d358a | 2008-11-18 06:01:19 +0900 | [diff] [blame] | 623 | |
evan@chromium.org | 3669986 | 2010-02-02 11:28:16 +0900 | [diff] [blame] | 624 | ssize_t bytes_read = HANDLE_EINTR(read(fd, data, size)); |
| 625 | if (int ret = HANDLE_EINTR(close(fd)) < 0) |
| 626 | return ret; |
| 627 | return bytes_read; |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 628 | } |
| 629 | |
estade@chromium.org | 9d32ed8 | 2009-01-28 14:47:15 +0900 | [diff] [blame] | 630 | int WriteFile(const FilePath& filename, const char* data, int size) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 631 | base::ThreadRestrictions::AssertIOAllowed(); |
phajdan.jr@chromium.org | ad50453 | 2011-04-12 15:07:25 +0900 | [diff] [blame] | 632 | int fd = HANDLE_EINTR(creat(filename.value().c_str(), 0666)); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 633 | if (fd < 0) |
| 634 | return -1; |
mark@chromium.org | 8ca0d27 | 2008-09-12 02:36:23 +0900 | [diff] [blame] | 635 | |
evan@chromium.org | 3669986 | 2010-02-02 11:28:16 +0900 | [diff] [blame] | 636 | int bytes_written = WriteFileDescriptor(fd, data, size); |
| 637 | if (int ret = HANDLE_EINTR(close(fd)) < 0) |
| 638 | return ret; |
| 639 | return bytes_written; |
estade@chromium.org | 557da51 | 2009-09-16 09:29:22 +0900 | [diff] [blame] | 640 | } |
| 641 | |
| 642 | int WriteFileDescriptor(const int fd, const char* data, int size) { |
| 643 | // Allow for partial writes. |
| 644 | ssize_t bytes_written_total = 0; |
| 645 | for (ssize_t bytes_written_partial = 0; bytes_written_total < size; |
| 646 | bytes_written_total += bytes_written_partial) { |
| 647 | bytes_written_partial = |
| 648 | HANDLE_EINTR(write(fd, data + bytes_written_total, |
| 649 | size - bytes_written_total)); |
| 650 | if (bytes_written_partial < 0) |
| 651 | return -1; |
| 652 | } |
| 653 | |
mark@chromium.org | 8ca0d27 | 2008-09-12 02:36:23 +0900 | [diff] [blame] | 654 | return bytes_written_total; |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 655 | } |
| 656 | |
loislo@chromium.org | eae0dcb | 2012-04-29 21:57:10 +0900 | [diff] [blame] | 657 | int AppendToFile(const FilePath& filename, const char* data, int size) { |
| 658 | base::ThreadRestrictions::AssertIOAllowed(); |
| 659 | int fd = HANDLE_EINTR(open(filename.value().c_str(), O_WRONLY | O_APPEND)); |
| 660 | if (fd < 0) |
| 661 | return -1; |
| 662 | |
| 663 | int bytes_written = WriteFileDescriptor(fd, data, size); |
| 664 | if (int ret = HANDLE_EINTR(close(fd)) < 0) |
| 665 | return ret; |
| 666 | return bytes_written; |
| 667 | } |
| 668 | |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 669 | // Gets the current working directory for the process. |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 670 | bool GetCurrentDirectory(FilePath* dir) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 671 | // getcwd can return ENOENT, which implies it checks against the disk. |
| 672 | base::ThreadRestrictions::AssertIOAllowed(); |
| 673 | |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 674 | char system_buffer[PATH_MAX] = ""; |
evanm@google.com | 874d167 | 2008-10-31 08:54:04 +0900 | [diff] [blame] | 675 | if (!getcwd(system_buffer, sizeof(system_buffer))) { |
| 676 | NOTREACHED(); |
| 677 | return false; |
| 678 | } |
| 679 | *dir = FilePath(system_buffer); |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 680 | return true; |
| 681 | } |
| 682 | |
| 683 | // Sets the current working directory for the process. |
estade@chromium.org | b1d358a | 2008-11-18 06:01:19 +0900 | [diff] [blame] | 684 | bool SetCurrentDirectory(const FilePath& path) { |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 685 | base::ThreadRestrictions::AssertIOAllowed(); |
estade@chromium.org | b1d358a | 2008-11-18 06:01:19 +0900 | [diff] [blame] | 686 | int ret = chdir(path.value().c_str()); |
| 687 | return !ret; |
mmentovai@google.com | aa13be6 | 2008-09-03 03:20:34 +0900 | [diff] [blame] | 688 | } |
estade@chromium.org | b1d358a | 2008-11-18 06:01:19 +0900 | [diff] [blame] | 689 | |
skerner@chromium.org | 8bbe5be | 2010-06-10 07:56:48 +0900 | [diff] [blame] | 690 | bool NormalizeFilePath(const FilePath& path, FilePath* normalized_path) { |
| 691 | FilePath real_path_result; |
| 692 | if (!RealPath(path, &real_path_result)) |
skerner@chromium.org | 559baa9 | 2010-05-13 00:13:57 +0900 | [diff] [blame] | 693 | return false; |
| 694 | |
skerner@chromium.org | 8bbe5be | 2010-06-10 07:56:48 +0900 | [diff] [blame] | 695 | // To be consistant with windows, fail if |real_path_result| is a |
| 696 | // directory. |
| 697 | stat_wrapper_t file_info; |
| 698 | if (CallStat(real_path_result.value().c_str(), &file_info) != 0 || |
| 699 | S_ISDIR(file_info.st_mode)) |
| 700 | return false; |
| 701 | |
| 702 | *normalized_path = real_path_result; |
skerner@chromium.org | 559baa9 | 2010-05-13 00:13:57 +0900 | [diff] [blame] | 703 | return true; |
| 704 | } |
| 705 | |
evan@chromium.org | b957533 | 2010-04-22 06:11:36 +0900 | [diff] [blame] | 706 | #if !defined(OS_MACOSX) |
| 707 | bool GetTempDir(FilePath* path) { |
| 708 | const char* tmp = getenv("TMPDIR"); |
| 709 | if (tmp) |
| 710 | *path = FilePath(tmp); |
| 711 | else |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 712 | #if defined(OS_ANDROID) |
nileshagrawal@chromium.org | 62001b9 | 2012-05-18 05:09:06 +0900 | [diff] [blame] | 713 | return PathService::Get(base::DIR_CACHE, path); |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 714 | #else |
evan@chromium.org | b957533 | 2010-04-22 06:11:36 +0900 | [diff] [blame] | 715 | *path = FilePath("/tmp"); |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 716 | #endif |
evan@chromium.org | b957533 | 2010-04-22 06:11:36 +0900 | [diff] [blame] | 717 | return true; |
| 718 | } |
| 719 | |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 720 | #if !defined(OS_ANDROID) |
mcgrathr@chromium.org | 569a423 | 2011-12-07 03:07:05 +0900 | [diff] [blame] | 721 | |
robert.nagy@gmail.com | ea54e46 | 2011-10-25 07:05:27 +0900 | [diff] [blame] | 722 | #if defined(OS_LINUX) |
mcgrathr@chromium.org | 569a423 | 2011-12-07 03:07:05 +0900 | [diff] [blame] | 723 | // Determine if /dev/shm files can be mapped and then mprotect'd PROT_EXEC. |
| 724 | // This depends on the mount options used for /dev/shm, which vary among |
| 725 | // different Linux distributions and possibly local configuration. It also |
| 726 | // depends on details of kernel--ChromeOS uses the noexec option for /dev/shm |
| 727 | // but its kernel allows mprotect with PROT_EXEC anyway. |
| 728 | |
| 729 | namespace { |
| 730 | |
| 731 | bool DetermineDevShmExecutable() { |
| 732 | bool result = false; |
| 733 | FilePath path; |
| 734 | int fd = CreateAndOpenFdForTemporaryFile(FilePath("/dev/shm"), &path); |
| 735 | if (fd >= 0) { |
| 736 | ScopedFD shm_fd_closer(&fd); |
| 737 | Delete(path, false); |
scr@chromium.org | e750699 | 2011-12-23 07:31:44 +0900 | [diff] [blame] | 738 | long sysconf_result = sysconf(_SC_PAGESIZE); |
| 739 | CHECK_GE(sysconf_result, 0); |
| 740 | size_t pagesize = static_cast<size_t>(sysconf_result); |
| 741 | CHECK_GE(sizeof(pagesize), sizeof(sysconf_result)); |
mcgrathr@chromium.org | 569a423 | 2011-12-07 03:07:05 +0900 | [diff] [blame] | 742 | void *mapping = mmap(NULL, pagesize, PROT_READ, MAP_SHARED, fd, 0); |
| 743 | if (mapping != MAP_FAILED) { |
| 744 | if (mprotect(mapping, pagesize, PROT_READ | PROT_EXEC) == 0) |
| 745 | result = true; |
| 746 | munmap(mapping, pagesize); |
| 747 | } |
| 748 | } |
| 749 | return result; |
evan@chromium.org | b957533 | 2010-04-22 06:11:36 +0900 | [diff] [blame] | 750 | } |
mcgrathr@chromium.org | 569a423 | 2011-12-07 03:07:05 +0900 | [diff] [blame] | 751 | |
| 752 | }; // namespace |
| 753 | #endif // defined(OS_LINUX) |
| 754 | |
| 755 | bool GetShmemTempDir(FilePath* path, bool executable) { |
| 756 | #if defined(OS_LINUX) |
| 757 | bool use_dev_shm = true; |
| 758 | if (executable) { |
| 759 | static const bool s_dev_shm_executable = DetermineDevShmExecutable(); |
| 760 | use_dev_shm = s_dev_shm_executable; |
| 761 | } |
| 762 | if (use_dev_shm) { |
| 763 | *path = FilePath("/dev/shm"); |
| 764 | return true; |
| 765 | } |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 766 | #endif |
mcgrathr@chromium.org | 569a423 | 2011-12-07 03:07:05 +0900 | [diff] [blame] | 767 | return GetTempDir(path); |
| 768 | } |
| 769 | #endif // !defined(OS_ANDROID) |
evan@chromium.org | b957533 | 2010-04-22 06:11:36 +0900 | [diff] [blame] | 770 | |
evan@chromium.org | 73aec0e | 2010-04-23 08:28:05 +0900 | [diff] [blame] | 771 | FilePath GetHomeDir() { |
haruki@chromium.org | 712ff26 | 2012-08-06 18:14:44 +0900 | [diff] [blame] | 772 | #if defined(OS_CHROMEOS) |
| 773 | if (base::chromeos::IsRunningOnChromeOS()) |
| 774 | return FilePath("/home/chronos/user"); |
| 775 | #endif |
| 776 | |
evan@chromium.org | 73aec0e | 2010-04-23 08:28:05 +0900 | [diff] [blame] | 777 | const char* home_dir = getenv("HOME"); |
| 778 | if (home_dir && home_dir[0]) |
| 779 | return FilePath(home_dir); |
| 780 | |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 781 | #if defined(OS_ANDROID) |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 782 | DLOG(WARNING) << "OS_ANDROID: Home directory lookup not yet implemented."; |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 783 | #else |
evan@chromium.org | 7c9cd8b | 2010-10-23 14:19:20 +0900 | [diff] [blame] | 784 | // g_get_home_dir calls getpwent, which can fall through to LDAP calls. |
| 785 | base::ThreadRestrictions::AssertIOAllowed(); |
| 786 | |
evan@chromium.org | 73aec0e | 2010-04-23 08:28:05 +0900 | [diff] [blame] | 787 | home_dir = g_get_home_dir(); |
| 788 | if (home_dir && home_dir[0]) |
| 789 | return FilePath(home_dir); |
michaelbai@google.com | 2251c62 | 2011-06-22 07:34:50 +0900 | [diff] [blame] | 790 | #endif |
evan@chromium.org | 73aec0e | 2010-04-23 08:28:05 +0900 | [diff] [blame] | 791 | |
| 792 | FilePath rv; |
| 793 | if (file_util::GetTempDir(&rv)) |
| 794 | return rv; |
| 795 | |
| 796 | // Last resort. |
| 797 | return FilePath("/tmp"); |
| 798 | } |
thorogood@chromium.org | e77009d | 2012-07-23 17:22:44 +0900 | [diff] [blame] | 799 | #endif // !defined(OS_MACOSX) |
evan@chromium.org | b957533 | 2010-04-22 06:11:36 +0900 | [diff] [blame] | 800 | |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 801 | bool VerifyPathControlledByUser(const FilePath& base, |
| 802 | const FilePath& path, |
| 803 | uid_t owner_uid, |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 804 | const std::set<gid_t>& group_gids) { |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 805 | if (base != path && !base.IsParent(path)) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 806 | DLOG(ERROR) << "|base| must be a subdirectory of |path|. base = \"" |
| 807 | << base.value() << "\", path = \"" << path.value() << "\""; |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 808 | return false; |
| 809 | } |
| 810 | |
| 811 | std::vector<FilePath::StringType> base_components; |
| 812 | std::vector<FilePath::StringType> path_components; |
| 813 | |
| 814 | base.GetComponents(&base_components); |
| 815 | path.GetComponents(&path_components); |
| 816 | |
| 817 | std::vector<FilePath::StringType>::const_iterator ib, ip; |
| 818 | for (ib = base_components.begin(), ip = path_components.begin(); |
| 819 | ib != base_components.end(); ++ib, ++ip) { |
| 820 | // |base| must be a subpath of |path|, so all components should match. |
| 821 | // If these CHECKs fail, look at the test that base is a parent of |
| 822 | // path at the top of this function. |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 823 | DCHECK(ip != path_components.end()); |
| 824 | DCHECK(*ip == *ib); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | FilePath current_path = base; |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 828 | if (!VerifySpecificPathControlledByUser(current_path, owner_uid, group_gids)) |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 829 | return false; |
| 830 | |
| 831 | for (; ip != path_components.end(); ++ip) { |
| 832 | current_path = current_path.Append(*ip); |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 833 | if (!VerifySpecificPathControlledByUser( |
| 834 | current_path, owner_uid, group_gids)) |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 835 | return false; |
| 836 | } |
| 837 | return true; |
| 838 | } |
| 839 | |
qsr@chromium.org | 4ab5de9 | 2012-07-09 23:40:39 +0900 | [diff] [blame] | 840 | #if defined(OS_MACOSX) && !defined(OS_IOS) |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 841 | bool VerifyPathControlledByAdmin(const FilePath& path) { |
| 842 | const unsigned kRootUid = 0; |
| 843 | const FilePath kFileSystemRoot("/"); |
| 844 | |
| 845 | // The name of the administrator group on mac os. |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 846 | const char* const kAdminGroupNames[] = { |
| 847 | "admin", |
| 848 | "wheel" |
| 849 | }; |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 850 | |
| 851 | // Reading the groups database may touch the file system. |
| 852 | base::ThreadRestrictions::AssertIOAllowed(); |
| 853 | |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 854 | std::set<gid_t> allowed_group_ids; |
| 855 | for (int i = 0, ie = arraysize(kAdminGroupNames); i < ie; ++i) { |
| 856 | struct group *group_record = getgrnam(kAdminGroupNames[i]); |
| 857 | if (!group_record) { |
brettw@chromium.org | 5faed3c | 2011-10-27 06:48:00 +0900 | [diff] [blame] | 858 | DPLOG(ERROR) << "Could not get the group ID of group \"" |
| 859 | << kAdminGroupNames[i] << "\"."; |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 860 | continue; |
| 861 | } |
| 862 | |
| 863 | allowed_group_ids.insert(group_record->gr_gid); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 864 | } |
| 865 | |
| 866 | return VerifyPathControlledByUser( |
skerner@chromium.org | 8078414 | 2011-10-18 06:30:29 +0900 | [diff] [blame] | 867 | kFileSystemRoot, path, kRootUid, allowed_group_ids); |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 868 | } |
stuartmorgan@chromium.org | 925e0b7 | 2012-07-24 20:23:32 +0900 | [diff] [blame] | 869 | #endif // defined(OS_MACOSX) && !defined(OS_IOS) |
skerner@google.com | 93449ef | 2011-09-22 23:47:18 +0900 | [diff] [blame] | 870 | |
kinaba@chromium.org | bbe80ba | 2013-02-21 12:24:08 +0900 | [diff] [blame] | 871 | int GetMaximumPathComponentLength(const FilePath& path) { |
| 872 | base::ThreadRestrictions::AssertIOAllowed(); |
| 873 | return pathconf(path.value().c_str(), _PC_NAME_MAX); |
| 874 | } |
| 875 | |
thestig@chromium.org | 7ecbbc1 | 2010-11-20 12:38:15 +0900 | [diff] [blame] | 876 | } // namespace file_util |
brettw@chromium.org | aecf7a3 | 2013-07-10 02:42:26 +0900 | [diff] [blame] | 877 | |
| 878 | namespace base { |
| 879 | namespace internal { |
| 880 | |
| 881 | bool MoveUnsafe(const FilePath& from_path, const FilePath& to_path) { |
| 882 | ThreadRestrictions::AssertIOAllowed(); |
| 883 | // Windows compatibility: if to_path exists, from_path and to_path |
| 884 | // must be the same type, either both files, or both directories. |
| 885 | stat_wrapper_t to_file_info; |
| 886 | if (CallStat(to_path.value().c_str(), &to_file_info) == 0) { |
| 887 | stat_wrapper_t from_file_info; |
| 888 | if (CallStat(from_path.value().c_str(), &from_file_info) == 0) { |
| 889 | if (S_ISDIR(to_file_info.st_mode) != S_ISDIR(from_file_info.st_mode)) |
| 890 | return false; |
| 891 | } else { |
| 892 | return false; |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | if (rename(from_path.value().c_str(), to_path.value().c_str()) == 0) |
| 897 | return true; |
| 898 | |
| 899 | if (!CopyDirectory(from_path, to_path, true)) |
| 900 | return false; |
| 901 | |
| 902 | Delete(from_path, true); |
| 903 | return true; |
| 904 | } |
| 905 | |
| 906 | #if !defined(OS_MACOSX) |
| 907 | // Mac has its own implementation, this is for all other Posix systems. |
| 908 | bool CopyFileUnsafe(const FilePath& from_path, const FilePath& to_path) { |
| 909 | ThreadRestrictions::AssertIOAllowed(); |
| 910 | int infile = HANDLE_EINTR(open(from_path.value().c_str(), O_RDONLY)); |
| 911 | if (infile < 0) |
| 912 | return false; |
| 913 | |
| 914 | int outfile = HANDLE_EINTR(creat(to_path.value().c_str(), 0666)); |
| 915 | if (outfile < 0) { |
| 916 | ignore_result(HANDLE_EINTR(close(infile))); |
| 917 | return false; |
| 918 | } |
| 919 | |
| 920 | const size_t kBufferSize = 32768; |
| 921 | std::vector<char> buffer(kBufferSize); |
| 922 | bool result = true; |
| 923 | |
| 924 | while (result) { |
| 925 | ssize_t bytes_read = HANDLE_EINTR(read(infile, &buffer[0], buffer.size())); |
| 926 | if (bytes_read < 0) { |
| 927 | result = false; |
| 928 | break; |
| 929 | } |
| 930 | if (bytes_read == 0) |
| 931 | break; |
| 932 | // Allow for partial writes |
| 933 | ssize_t bytes_written_per_read = 0; |
| 934 | do { |
| 935 | ssize_t bytes_written_partial = HANDLE_EINTR(write( |
| 936 | outfile, |
| 937 | &buffer[bytes_written_per_read], |
| 938 | bytes_read - bytes_written_per_read)); |
| 939 | if (bytes_written_partial < 0) { |
| 940 | result = false; |
| 941 | break; |
| 942 | } |
| 943 | bytes_written_per_read += bytes_written_partial; |
| 944 | } while (bytes_written_per_read < bytes_read); |
| 945 | } |
| 946 | |
| 947 | if (HANDLE_EINTR(close(infile)) < 0) |
| 948 | result = false; |
| 949 | if (HANDLE_EINTR(close(outfile)) < 0) |
| 950 | result = false; |
| 951 | |
| 952 | return result; |
| 953 | } |
| 954 | #endif // !defined(OS_MACOSX) |
| 955 | |
| 956 | } // namespace internal |
| 957 | } // namespace base |