diff options
Diffstat (limited to '')
| -rw-r--r-- | recovery.cpp | 180 |
1 files changed, 85 insertions, 95 deletions
diff --git a/recovery.cpp b/recovery.cpp index e777c46cd..5213301c9 100644 --- a/recovery.cpp +++ b/recovery.cpp @@ -512,117 +512,107 @@ static void finish_recovery() { sync(); // For good measure. } -typedef struct _saved_log_file { - char* name; - struct stat st; - unsigned char* data; - struct _saved_log_file* next; -} saved_log_file; +struct saved_log_file { + std::string name; + struct stat sb; + std::string data; +}; static bool erase_volume(const char* volume) { - bool is_cache = (strcmp(volume, CACHE_ROOT) == 0); - bool is_data = (strcmp(volume, DATA_ROOT) == 0); + bool is_cache = (strcmp(volume, CACHE_ROOT) == 0); + bool is_data = (strcmp(volume, DATA_ROOT) == 0); - ui->SetBackground(RecoveryUI::ERASING); - ui->SetProgressType(RecoveryUI::INDETERMINATE); + ui->SetBackground(RecoveryUI::ERASING); + ui->SetProgressType(RecoveryUI::INDETERMINATE); - saved_log_file* head = NULL; - - if (is_cache) { - // If we're reformatting /cache, we load any past logs - // (i.e. "/cache/recovery/last_*") and the current log - // ("/cache/recovery/log") into memory, so we can restore them after - // the reformat. - - ensure_path_mounted(volume); - - DIR* d; - struct dirent* de; - d = opendir(CACHE_LOG_DIR); - if (d) { - char path[PATH_MAX]; - strcpy(path, CACHE_LOG_DIR); - strcat(path, "/"); - int path_len = strlen(path); - while ((de = readdir(d)) != NULL) { - if (strncmp(de->d_name, "last_", 5) == 0 || strcmp(de->d_name, "log") == 0) { - saved_log_file* p = (saved_log_file*) malloc(sizeof(saved_log_file)); - strcpy(path+path_len, de->d_name); - p->name = strdup(path); - if (stat(path, &(p->st)) == 0) { - // truncate files to 512kb - if (p->st.st_size > (1 << 19)) { - p->st.st_size = 1 << 19; - } - p->data = (unsigned char*) malloc(p->st.st_size); - FILE* f = fopen(path, "rb"); - fread(p->data, 1, p->st.st_size, f); - fclose(f); - p->next = head; - head = p; - } else { - free(p); - } - } - } - closedir(d); - } else { - if (errno != ENOENT) { - printf("opendir failed: %s\n", strerror(errno)); + std::vector<saved_log_file> log_files; + + if (is_cache) { + // If we're reformatting /cache, we load any past logs + // (i.e. "/cache/recovery/last_*") and the current log + // ("/cache/recovery/log") into memory, so we can restore them after + // the reformat. + + ensure_path_mounted(volume); + + struct dirent* de; + std::unique_ptr<DIR, decltype(&closedir)> d(opendir(CACHE_LOG_DIR), closedir); + if (d) { + while ((de = readdir(d.get())) != nullptr) { + if (strncmp(de->d_name, "last_", 5) == 0 || strcmp(de->d_name, "log") == 0) { + std::string path = android::base::StringPrintf("%s/%s", CACHE_LOG_DIR, de->d_name); + + struct stat sb; + if (stat(path.c_str(), &sb) == 0) { + // truncate files to 512kb + if (sb.st_size > (1 << 19)) { + sb.st_size = 1 << 19; } + + std::string data(sb.st_size, '\0'); + FILE* f = fopen(path.c_str(), "rb"); + fread(&data[0], 1, data.size(), f); + fclose(f); + + log_files.emplace_back(saved_log_file{ path, sb, data }); + } } + } + } else { + if (errno != ENOENT) { + PLOG(ERROR) << "Failed to opendir " << CACHE_LOG_DIR; + } } + } - ui->Print("Formatting %s...\n", volume); + ui->Print("Formatting %s...\n", volume); - ensure_path_unmounted(volume); + ensure_path_unmounted(volume); - int result; + int result; - if (is_data && reason && strcmp(reason, "convert_fbe") == 0) { - // Create convert_fbe breadcrumb file to signal to init - // to convert to file based encryption, not full disk encryption - if (mkdir(CONVERT_FBE_DIR, 0700) != 0) { - ui->Print("Failed to make convert_fbe dir %s\n", strerror(errno)); - return true; - } - FILE* f = fopen(CONVERT_FBE_FILE, "wb"); - if (!f) { - ui->Print("Failed to convert to file encryption %s\n", strerror(errno)); - return true; - } - fclose(f); - result = format_volume(volume, CONVERT_FBE_DIR); - remove(CONVERT_FBE_FILE); - rmdir(CONVERT_FBE_DIR); - } else { - result = format_volume(volume); + if (is_data && reason && strcmp(reason, "convert_fbe") == 0) { + // Create convert_fbe breadcrumb file to signal to init + // to convert to file based encryption, not full disk encryption + if (mkdir(CONVERT_FBE_DIR, 0700) != 0) { + ui->Print("Failed to make convert_fbe dir %s\n", strerror(errno)); + return true; } + FILE* f = fopen(CONVERT_FBE_FILE, "wb"); + if (!f) { + ui->Print("Failed to convert to file encryption %s\n", strerror(errno)); + return true; + } + fclose(f); + result = format_volume(volume, CONVERT_FBE_DIR); + remove(CONVERT_FBE_FILE); + rmdir(CONVERT_FBE_DIR); + } else { + result = format_volume(volume); + } - if (is_cache) { - while (head) { - FILE* f = fopen_path(head->name, "wb"); - if (f) { - fwrite(head->data, 1, head->st.st_size, f); - fclose(f); - chmod(head->name, head->st.st_mode); - chown(head->name, head->st.st_uid, head->st.st_gid); - } - free(head->name); - free(head->data); - saved_log_file* temp = head->next; - free(head); - head = temp; + if (is_cache) { + // Re-create the log dir and write back the log entries. + if (ensure_path_mounted(CACHE_LOG_DIR) == 0 && + dirCreateHierarchy(CACHE_LOG_DIR, 0777, nullptr, false, sehandle) == 0) { + for (const auto& log : log_files) { + if (!android::base::WriteStringToFile(log.data, log.name, log.sb.st_mode, log.sb.st_uid, + log.sb.st_gid)) { + PLOG(ERROR) << "Failed to write to " << log.name; } - - // Any part of the log we'd copied to cache is now gone. - // Reset the pointer so we copy from the beginning of the temp - // log. - tmplog_offset = 0; - copy_logs(); + } + } else { + PLOG(ERROR) << "Failed to mount / create " << CACHE_LOG_DIR; } - return (result == 0); + // Any part of the log we'd copied to cache is now gone. + // Reset the pointer so we copy from the beginning of the temp + // log. + tmplog_offset = 0; + copy_logs(); + } + + return (result == 0); } static int |