henrike@webrtc.org | f7795df | 2014-05-13 18:00:26 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include "webrtc/base/unixfilesystem.h" |
| 12 | |
| 13 | #include <errno.h> |
| 14 | #include <fcntl.h> |
| 15 | #include <stdlib.h> |
| 16 | #include <sys/stat.h> |
| 17 | #include <unistd.h> |
| 18 | |
| 19 | #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) |
| 20 | #include <Carbon/Carbon.h> |
| 21 | #include <IOKit/IOCFBundle.h> |
| 22 | #include <sys/statvfs.h> |
| 23 | #include "webrtc/base/macutils.h" |
| 24 | #endif // WEBRTC_MAC && !defined(WEBRTC_IOS) |
| 25 | |
| 26 | #if defined(WEBRTC_POSIX) && !defined(WEBRTC_MAC) || defined(WEBRTC_IOS) |
| 27 | #include <sys/types.h> |
| 28 | #if defined(WEBRTC_ANDROID) |
| 29 | #include <sys/statfs.h> |
| 30 | #elif !defined(__native_client__) |
| 31 | #include <sys/statvfs.h> |
| 32 | #endif // !defined(__native_client__) |
| 33 | #include <limits.h> |
| 34 | #include <pwd.h> |
| 35 | #include <stdio.h> |
| 36 | #endif // WEBRTC_POSIX && !WEBRTC_MAC || WEBRTC_IOS |
| 37 | |
| 38 | #if defined(WEBRTC_LINUX) && !defined(WEBRTC_ANDROID) |
| 39 | #include <ctype.h> |
| 40 | #include <algorithm> |
| 41 | #endif |
| 42 | |
| 43 | #if defined(__native_client__) && !defined(__GLIBC__) |
| 44 | #include <sys/syslimits.h> |
| 45 | #endif |
| 46 | |
| 47 | #include "webrtc/base/fileutils.h" |
| 48 | #include "webrtc/base/pathutils.h" |
| 49 | #include "webrtc/base/stream.h" |
| 50 | #include "webrtc/base/stringutils.h" |
| 51 | |
| 52 | #if defined(WEBRTC_IOS) |
| 53 | // Defined in iosfilesystem.mm. No header file to discourage use |
| 54 | // elsewhere; other places should use GetApp{Data,Temp}Folder() in |
| 55 | // this file. Don't copy/paste. I mean it. |
| 56 | char* IOSDataDirectory(); |
| 57 | char* IOSTempDirectory(); |
| 58 | void IOSAppName(rtc::Pathname* path); |
| 59 | #endif |
| 60 | |
| 61 | namespace rtc { |
| 62 | |
| 63 | #if !defined(WEBRTC_ANDROID) && !defined(WEBRTC_IOS) |
| 64 | char* UnixFilesystem::app_temp_path_ = NULL; |
| 65 | #else |
| 66 | char* UnixFilesystem::provided_app_data_folder_ = NULL; |
| 67 | char* UnixFilesystem::provided_app_temp_folder_ = NULL; |
| 68 | |
| 69 | void UnixFilesystem::SetAppDataFolder(const std::string& folder) { |
| 70 | delete [] provided_app_data_folder_; |
| 71 | provided_app_data_folder_ = CopyString(folder); |
| 72 | } |
| 73 | |
| 74 | void UnixFilesystem::SetAppTempFolder(const std::string& folder) { |
| 75 | delete [] provided_app_temp_folder_; |
| 76 | provided_app_temp_folder_ = CopyString(folder); |
| 77 | } |
| 78 | #endif |
| 79 | |
| 80 | UnixFilesystem::UnixFilesystem() { |
| 81 | #if defined(WEBRTC_IOS) |
| 82 | if (!provided_app_data_folder_) |
| 83 | provided_app_data_folder_ = IOSDataDirectory(); |
| 84 | if (!provided_app_temp_folder_) |
| 85 | provided_app_temp_folder_ = IOSTempDirectory(); |
| 86 | #endif |
| 87 | } |
| 88 | |
| 89 | UnixFilesystem::~UnixFilesystem() {} |
| 90 | |
| 91 | bool UnixFilesystem::CreateFolder(const Pathname &path, mode_t mode) { |
| 92 | std::string pathname(path.pathname()); |
| 93 | int len = pathname.length(); |
| 94 | if ((len == 0) || (pathname[len - 1] != '/')) |
| 95 | return false; |
| 96 | |
| 97 | struct stat st; |
| 98 | int res = ::stat(pathname.c_str(), &st); |
| 99 | if (res == 0) { |
| 100 | // Something exists at this location, check if it is a directory |
| 101 | return S_ISDIR(st.st_mode) != 0; |
| 102 | } else if (errno != ENOENT) { |
| 103 | // Unexpected error |
| 104 | return false; |
| 105 | } |
| 106 | |
| 107 | // Directory doesn't exist, look up one directory level |
| 108 | do { |
| 109 | --len; |
| 110 | } while ((len > 0) && (pathname[len - 1] != '/')); |
| 111 | |
| 112 | if (!CreateFolder(Pathname(pathname.substr(0, len)), mode)) { |
| 113 | return false; |
| 114 | } |
| 115 | |
| 116 | LOG(LS_INFO) << "Creating folder: " << pathname; |
| 117 | return (0 == ::mkdir(pathname.c_str(), mode)); |
| 118 | } |
| 119 | |
| 120 | bool UnixFilesystem::CreateFolder(const Pathname &path) { |
| 121 | return CreateFolder(path, 0755); |
| 122 | } |
| 123 | |
| 124 | FileStream *UnixFilesystem::OpenFile(const Pathname &filename, |
| 125 | const std::string &mode) { |
| 126 | FileStream *fs = new FileStream(); |
| 127 | if (fs && !fs->Open(filename.pathname().c_str(), mode.c_str(), NULL)) { |
| 128 | delete fs; |
| 129 | fs = NULL; |
| 130 | } |
| 131 | return fs; |
| 132 | } |
| 133 | |
| 134 | bool UnixFilesystem::CreatePrivateFile(const Pathname &filename) { |
| 135 | int fd = open(filename.pathname().c_str(), |
| 136 | O_RDWR | O_CREAT | O_EXCL, |
| 137 | S_IRUSR | S_IWUSR); |
| 138 | if (fd < 0) { |
| 139 | LOG_ERR(LS_ERROR) << "open() failed."; |
| 140 | return false; |
| 141 | } |
| 142 | // Don't need to keep the file descriptor. |
| 143 | if (close(fd) < 0) { |
| 144 | LOG_ERR(LS_ERROR) << "close() failed."; |
| 145 | // Continue. |
| 146 | } |
| 147 | return true; |
| 148 | } |
| 149 | |
| 150 | bool UnixFilesystem::DeleteFile(const Pathname &filename) { |
| 151 | LOG(LS_INFO) << "Deleting file:" << filename.pathname(); |
| 152 | |
| 153 | if (!IsFile(filename)) { |
| 154 | ASSERT(IsFile(filename)); |
| 155 | return false; |
| 156 | } |
| 157 | return ::unlink(filename.pathname().c_str()) == 0; |
| 158 | } |
| 159 | |
| 160 | bool UnixFilesystem::DeleteEmptyFolder(const Pathname &folder) { |
| 161 | LOG(LS_INFO) << "Deleting folder" << folder.pathname(); |
| 162 | |
| 163 | if (!IsFolder(folder)) { |
| 164 | ASSERT(IsFolder(folder)); |
| 165 | return false; |
| 166 | } |
| 167 | std::string no_slash(folder.pathname(), 0, folder.pathname().length()-1); |
| 168 | return ::rmdir(no_slash.c_str()) == 0; |
| 169 | } |
| 170 | |
| 171 | bool UnixFilesystem::GetTemporaryFolder(Pathname &pathname, bool create, |
| 172 | const std::string *append) { |
| 173 | #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) |
| 174 | FSRef fr; |
| 175 | if (0 != FSFindFolder(kOnAppropriateDisk, kTemporaryFolderType, |
| 176 | kCreateFolder, &fr)) |
| 177 | return false; |
| 178 | unsigned char buffer[NAME_MAX+1]; |
| 179 | if (0 != FSRefMakePath(&fr, buffer, ARRAY_SIZE(buffer))) |
| 180 | return false; |
| 181 | pathname.SetPathname(reinterpret_cast<char*>(buffer), ""); |
| 182 | #elif defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) |
| 183 | ASSERT(provided_app_temp_folder_ != NULL); |
| 184 | pathname.SetPathname(provided_app_temp_folder_, ""); |
| 185 | #else // !WEBRTC_MAC || WEBRTC_IOS && !WEBRTC_ANDROID |
| 186 | if (const char* tmpdir = getenv("TMPDIR")) { |
| 187 | pathname.SetPathname(tmpdir, ""); |
| 188 | } else if (const char* tmp = getenv("TMP")) { |
| 189 | pathname.SetPathname(tmp, ""); |
| 190 | } else { |
| 191 | #ifdef P_tmpdir |
| 192 | pathname.SetPathname(P_tmpdir, ""); |
| 193 | #else // !P_tmpdir |
| 194 | pathname.SetPathname("/tmp/", ""); |
| 195 | #endif // !P_tmpdir |
| 196 | } |
| 197 | #endif // !WEBRTC_MAC || WEBRTC_IOS && !WEBRTC_ANDROID |
| 198 | if (append) { |
| 199 | ASSERT(!append->empty()); |
| 200 | pathname.AppendFolder(*append); |
| 201 | } |
| 202 | return !create || CreateFolder(pathname); |
| 203 | } |
| 204 | |
| 205 | std::string UnixFilesystem::TempFilename(const Pathname &dir, |
| 206 | const std::string &prefix) { |
| 207 | int len = dir.pathname().size() + prefix.size() + 2 + 6; |
| 208 | char *tempname = new char[len]; |
| 209 | |
| 210 | snprintf(tempname, len, "%s/%sXXXXXX", dir.pathname().c_str(), |
| 211 | prefix.c_str()); |
| 212 | int fd = ::mkstemp(tempname); |
| 213 | if (fd != -1) |
| 214 | ::close(fd); |
| 215 | std::string ret(tempname); |
| 216 | delete[] tempname; |
| 217 | |
| 218 | return ret; |
| 219 | } |
| 220 | |
| 221 | bool UnixFilesystem::MoveFile(const Pathname &old_path, |
| 222 | const Pathname &new_path) { |
| 223 | if (!IsFile(old_path)) { |
| 224 | ASSERT(IsFile(old_path)); |
| 225 | return false; |
| 226 | } |
| 227 | LOG(LS_VERBOSE) << "Moving " << old_path.pathname() |
| 228 | << " to " << new_path.pathname(); |
| 229 | if (rename(old_path.pathname().c_str(), new_path.pathname().c_str()) != 0) { |
| 230 | if (errno != EXDEV) |
| 231 | return false; |
| 232 | if (!CopyFile(old_path, new_path)) |
| 233 | return false; |
| 234 | if (!DeleteFile(old_path)) |
| 235 | return false; |
| 236 | } |
| 237 | return true; |
| 238 | } |
| 239 | |
| 240 | bool UnixFilesystem::MoveFolder(const Pathname &old_path, |
| 241 | const Pathname &new_path) { |
| 242 | if (!IsFolder(old_path)) { |
| 243 | ASSERT(IsFolder(old_path)); |
| 244 | return false; |
| 245 | } |
| 246 | LOG(LS_VERBOSE) << "Moving " << old_path.pathname() |
| 247 | << " to " << new_path.pathname(); |
| 248 | if (rename(old_path.pathname().c_str(), new_path.pathname().c_str()) != 0) { |
| 249 | if (errno != EXDEV) |
| 250 | return false; |
| 251 | if (!CopyFolder(old_path, new_path)) |
| 252 | return false; |
| 253 | if (!DeleteFolderAndContents(old_path)) |
| 254 | return false; |
| 255 | } |
| 256 | return true; |
| 257 | } |
| 258 | |
| 259 | bool UnixFilesystem::IsFolder(const Pathname &path) { |
| 260 | struct stat st; |
| 261 | if (stat(path.pathname().c_str(), &st) < 0) |
| 262 | return false; |
| 263 | return S_ISDIR(st.st_mode); |
| 264 | } |
| 265 | |
| 266 | bool UnixFilesystem::CopyFile(const Pathname &old_path, |
| 267 | const Pathname &new_path) { |
| 268 | LOG(LS_VERBOSE) << "Copying " << old_path.pathname() |
| 269 | << " to " << new_path.pathname(); |
| 270 | char buf[256]; |
| 271 | size_t len; |
| 272 | |
| 273 | StreamInterface *source = OpenFile(old_path, "rb"); |
| 274 | if (!source) |
| 275 | return false; |
| 276 | |
| 277 | StreamInterface *dest = OpenFile(new_path, "wb"); |
| 278 | if (!dest) { |
| 279 | delete source; |
| 280 | return false; |
| 281 | } |
| 282 | |
| 283 | while (source->Read(buf, sizeof(buf), &len, NULL) == SR_SUCCESS) |
| 284 | dest->Write(buf, len, NULL, NULL); |
| 285 | |
| 286 | delete source; |
| 287 | delete dest; |
| 288 | return true; |
| 289 | } |
| 290 | |
| 291 | bool UnixFilesystem::IsTemporaryPath(const Pathname& pathname) { |
| 292 | #if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) |
| 293 | ASSERT(provided_app_temp_folder_ != NULL); |
| 294 | #endif |
| 295 | |
| 296 | const char* const kTempPrefixes[] = { |
| 297 | #if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) |
| 298 | provided_app_temp_folder_, |
| 299 | #else |
| 300 | "/tmp/", "/var/tmp/", |
| 301 | #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) |
| 302 | "/private/tmp/", "/private/var/tmp/", "/private/var/folders/", |
| 303 | #endif // WEBRTC_MAC && !defined(WEBRTC_IOS) |
| 304 | #endif // WEBRTC_ANDROID || WEBRTC_IOS |
| 305 | }; |
| 306 | for (size_t i = 0; i < ARRAY_SIZE(kTempPrefixes); ++i) { |
| 307 | if (0 == strncmp(pathname.pathname().c_str(), kTempPrefixes[i], |
| 308 | strlen(kTempPrefixes[i]))) |
| 309 | return true; |
| 310 | } |
| 311 | return false; |
| 312 | } |
| 313 | |
| 314 | bool UnixFilesystem::IsFile(const Pathname& pathname) { |
| 315 | struct stat st; |
| 316 | int res = ::stat(pathname.pathname().c_str(), &st); |
| 317 | // Treat symlinks, named pipes, etc. all as files. |
| 318 | return res == 0 && !S_ISDIR(st.st_mode); |
| 319 | } |
| 320 | |
| 321 | bool UnixFilesystem::IsAbsent(const Pathname& pathname) { |
| 322 | struct stat st; |
| 323 | int res = ::stat(pathname.pathname().c_str(), &st); |
| 324 | // Note: we specifically maintain ENOTDIR as an error, because that implies |
| 325 | // that you could not call CreateFolder(pathname). |
| 326 | return res != 0 && ENOENT == errno; |
| 327 | } |
| 328 | |
| 329 | bool UnixFilesystem::GetFileSize(const Pathname& pathname, size_t *size) { |
| 330 | struct stat st; |
| 331 | if (::stat(pathname.pathname().c_str(), &st) != 0) |
| 332 | return false; |
| 333 | *size = st.st_size; |
| 334 | return true; |
| 335 | } |
| 336 | |
| 337 | bool UnixFilesystem::GetFileTime(const Pathname& path, FileTimeType which, |
| 338 | time_t* time) { |
| 339 | struct stat st; |
| 340 | if (::stat(path.pathname().c_str(), &st) != 0) |
| 341 | return false; |
| 342 | switch (which) { |
| 343 | case FTT_CREATED: |
| 344 | *time = st.st_ctime; |
| 345 | break; |
| 346 | case FTT_MODIFIED: |
| 347 | *time = st.st_mtime; |
| 348 | break; |
| 349 | case FTT_ACCESSED: |
| 350 | *time = st.st_atime; |
| 351 | break; |
| 352 | default: |
| 353 | return false; |
| 354 | } |
| 355 | return true; |
| 356 | } |
| 357 | |
| 358 | bool UnixFilesystem::GetAppPathname(Pathname* path) { |
| 359 | #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) |
| 360 | ProcessSerialNumber psn = { 0, kCurrentProcess }; |
| 361 | CFDictionaryRef procinfo = ProcessInformationCopyDictionary(&psn, |
| 362 | kProcessDictionaryIncludeAllInformationMask); |
| 363 | if (NULL == procinfo) |
| 364 | return false; |
| 365 | CFStringRef cfpath = (CFStringRef) CFDictionaryGetValue(procinfo, |
| 366 | kIOBundleExecutableKey); |
| 367 | std::string path8; |
| 368 | bool success = ToUtf8(cfpath, &path8); |
| 369 | CFRelease(procinfo); |
| 370 | if (success) |
| 371 | path->SetPathname(path8); |
| 372 | return success; |
| 373 | #elif defined(__native_client__) |
| 374 | return false; |
| 375 | #elif IOS |
| 376 | IOSAppName(path); |
| 377 | return true; |
| 378 | #else // WEBRTC_MAC && !defined(WEBRTC_IOS) |
| 379 | char buffer[PATH_MAX + 2]; |
| 380 | ssize_t len = readlink("/proc/self/exe", buffer, ARRAY_SIZE(buffer) - 1); |
| 381 | if ((len <= 0) || (len == PATH_MAX + 1)) |
| 382 | return false; |
| 383 | buffer[len] = '\0'; |
| 384 | path->SetPathname(buffer); |
| 385 | return true; |
| 386 | #endif // WEBRTC_MAC && !defined(WEBRTC_IOS) |
| 387 | } |
| 388 | |
| 389 | bool UnixFilesystem::GetAppDataFolder(Pathname* path, bool per_user) { |
| 390 | ASSERT(!organization_name_.empty()); |
| 391 | ASSERT(!application_name_.empty()); |
| 392 | |
| 393 | // First get the base directory for app data. |
| 394 | #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) |
| 395 | if (per_user) { |
| 396 | // Use ~/Library/Application Support/<orgname>/<appname>/ |
| 397 | FSRef fr; |
| 398 | if (0 != FSFindFolder(kUserDomain, kApplicationSupportFolderType, |
| 399 | kCreateFolder, &fr)) |
| 400 | return false; |
| 401 | unsigned char buffer[NAME_MAX+1]; |
| 402 | if (0 != FSRefMakePath(&fr, buffer, ARRAY_SIZE(buffer))) |
| 403 | return false; |
| 404 | path->SetPathname(reinterpret_cast<char*>(buffer), ""); |
| 405 | } else { |
| 406 | // TODO |
| 407 | return false; |
| 408 | } |
| 409 | #elif defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) // && !WEBRTC_MAC || WEBRTC_IOS |
| 410 | ASSERT(provided_app_data_folder_ != NULL); |
| 411 | path->SetPathname(provided_app_data_folder_, ""); |
| 412 | #elif defined(WEBRTC_LINUX) && !defined(WEBRTC_ANDROID) // && !WEBRTC_MAC && !WEBRTC_IOS && !WEBRTC_ANDROID |
| 413 | if (per_user) { |
| 414 | // We follow the recommendations in |
| 415 | // http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html |
| 416 | // It specifies separate directories for data and config files, but |
| 417 | // GetAppDataFolder() does not distinguish. We just return the config dir |
| 418 | // path. |
| 419 | const char* xdg_config_home = getenv("XDG_CONFIG_HOME"); |
| 420 | if (xdg_config_home) { |
| 421 | path->SetPathname(xdg_config_home, ""); |
| 422 | } else { |
| 423 | // XDG says to default to $HOME/.config. We also support falling back to |
| 424 | // other synonyms for HOME if for some reason it is not defined. |
| 425 | const char* homedir; |
| 426 | if (const char* home = getenv("HOME")) { |
| 427 | homedir = home; |
| 428 | } else if (const char* dotdir = getenv("DOTDIR")) { |
| 429 | homedir = dotdir; |
| 430 | } else if (passwd* pw = getpwuid(geteuid())) { |
| 431 | homedir = pw->pw_dir; |
| 432 | } else { |
| 433 | return false; |
| 434 | } |
| 435 | path->SetPathname(homedir, ""); |
| 436 | path->AppendFolder(".config"); |
| 437 | } |
| 438 | } else { |
| 439 | // XDG does not define a standard directory for writable global data. Let's |
| 440 | // just use this. |
| 441 | path->SetPathname("/var/cache/", ""); |
| 442 | } |
| 443 | #endif // !WEBRTC_MAC && !WEBRTC_LINUX |
| 444 | |
| 445 | // Now add on a sub-path for our app. |
| 446 | #if defined(WEBRTC_MAC) || defined(WEBRTC_ANDROID) |
| 447 | path->AppendFolder(organization_name_); |
| 448 | path->AppendFolder(application_name_); |
| 449 | #elif defined(WEBRTC_LINUX) && !defined(WEBRTC_ANDROID) |
| 450 | // XDG says to use a single directory level, so we concatenate the org and app |
| 451 | // name with a hyphen. We also do the Linuxy thing and convert to all |
| 452 | // lowercase with no spaces. |
| 453 | std::string subdir(organization_name_); |
| 454 | subdir.append("-"); |
| 455 | subdir.append(application_name_); |
| 456 | replace_substrs(" ", 1, "", 0, &subdir); |
| 457 | std::transform(subdir.begin(), subdir.end(), subdir.begin(), ::tolower); |
| 458 | path->AppendFolder(subdir); |
| 459 | #endif |
| 460 | if (!CreateFolder(*path, 0700)) { |
| 461 | return false; |
| 462 | } |
| 463 | #if !defined(__native_client__) |
| 464 | // If the folder already exists, it may have the wrong mode or be owned by |
| 465 | // someone else, both of which are security problems. Setting the mode |
| 466 | // avoids both issues since it will fail if the path is not owned by us. |
| 467 | if (0 != ::chmod(path->pathname().c_str(), 0700)) { |
| 468 | LOG_ERR(LS_ERROR) << "Can't set mode on " << path; |
| 469 | return false; |
| 470 | } |
| 471 | #endif |
| 472 | return true; |
| 473 | } |
| 474 | |
| 475 | bool UnixFilesystem::GetAppTempFolder(Pathname* path) { |
| 476 | #if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) |
| 477 | ASSERT(provided_app_temp_folder_ != NULL); |
| 478 | path->SetPathname(provided_app_temp_folder_); |
| 479 | return true; |
| 480 | #else |
| 481 | ASSERT(!application_name_.empty()); |
| 482 | // TODO: Consider whether we are worried about thread safety. |
| 483 | if (app_temp_path_ != NULL && strlen(app_temp_path_) > 0) { |
| 484 | path->SetPathname(app_temp_path_); |
| 485 | return true; |
| 486 | } |
| 487 | |
| 488 | // Create a random directory as /tmp/<appname>-<pid>-<timestamp> |
| 489 | char buffer[128]; |
| 490 | sprintfn(buffer, ARRAY_SIZE(buffer), "-%d-%d", |
| 491 | static_cast<int>(getpid()), |
| 492 | static_cast<int>(time(0))); |
| 493 | std::string folder(application_name_); |
| 494 | folder.append(buffer); |
| 495 | if (!GetTemporaryFolder(*path, true, &folder)) |
| 496 | return false; |
| 497 | |
| 498 | delete [] app_temp_path_; |
| 499 | app_temp_path_ = CopyString(path->pathname()); |
| 500 | // TODO: atexit(DeleteFolderAndContents(app_temp_path_)); |
| 501 | return true; |
| 502 | #endif |
| 503 | } |
| 504 | |
| 505 | bool UnixFilesystem::GetDiskFreeSpace(const Pathname& path, int64 *freebytes) { |
| 506 | #ifdef __native_client__ |
| 507 | return false; |
| 508 | #else // __native_client__ |
| 509 | ASSERT(NULL != freebytes); |
| 510 | // TODO: Consider making relative paths absolute using cwd. |
| 511 | // TODO: When popping off a symlink, push back on the components of the |
| 512 | // symlink, so we don't jump out of the target disk inadvertently. |
| 513 | Pathname existing_path(path.folder(), ""); |
| 514 | while (!existing_path.folder().empty() && IsAbsent(existing_path)) { |
| 515 | existing_path.SetFolder(existing_path.parent_folder()); |
| 516 | } |
| 517 | #if defined(WEBRTC_ANDROID) |
| 518 | struct statfs vfs; |
| 519 | memset(&vfs, 0, sizeof(vfs)); |
| 520 | if (0 != statfs(existing_path.pathname().c_str(), &vfs)) |
| 521 | return false; |
| 522 | #else |
| 523 | struct statvfs vfs; |
| 524 | memset(&vfs, 0, sizeof(vfs)); |
| 525 | if (0 != statvfs(existing_path.pathname().c_str(), &vfs)) |
| 526 | return false; |
| 527 | #endif // WEBRTC_ANDROID |
| 528 | #if defined(WEBRTC_LINUX) |
| 529 | *freebytes = static_cast<int64>(vfs.f_bsize) * vfs.f_bavail; |
| 530 | #elif defined(WEBRTC_MAC) |
| 531 | *freebytes = static_cast<int64>(vfs.f_frsize) * vfs.f_bavail; |
| 532 | #endif |
| 533 | |
| 534 | return true; |
| 535 | #endif // !__native_client__ |
| 536 | } |
| 537 | |
| 538 | Pathname UnixFilesystem::GetCurrentDirectory() { |
| 539 | Pathname cwd; |
| 540 | char buffer[PATH_MAX]; |
| 541 | char *path = getcwd(buffer, PATH_MAX); |
| 542 | |
| 543 | if (!path) { |
| 544 | LOG_ERR(LS_ERROR) << "getcwd() failed"; |
| 545 | return cwd; // returns empty pathname |
| 546 | } |
| 547 | cwd.SetFolder(std::string(path)); |
| 548 | |
| 549 | return cwd; |
| 550 | } |
| 551 | |
| 552 | char* UnixFilesystem::CopyString(const std::string& str) { |
| 553 | size_t size = str.length() + 1; |
| 554 | |
| 555 | char* buf = new char[size]; |
| 556 | if (!buf) { |
| 557 | return NULL; |
| 558 | } |
| 559 | |
| 560 | strcpyn(buf, size, str.c_str()); |
| 561 | return buf; |
| 562 | } |
| 563 | |
| 564 | } // namespace rtc |
| 565 | |
| 566 | #if defined(__native_client__) |
| 567 | extern "C" int __attribute__((weak)) |
| 568 | link(const char* oldpath, const char* newpath) { |
| 569 | errno = EACCES; |
| 570 | return -1; |
| 571 | } |
| 572 | #endif |