From 43896f610e6634cf06726aefa1043ea5dbb51cea Mon Sep 17 00:00:00 2001 From: Debajit Ghosh Date: Fri, 14 Aug 2009 19:22:06 -0700 Subject: Remove (experimental) backup tool. --- backup/Android.mk | 15 -- backup/NOTICE | 190 --------------- backup/backup.cpp | 700 ------------------------------------------------------ 3 files changed, 905 deletions(-) delete mode 100644 backup/Android.mk delete mode 100644 backup/NOTICE delete mode 100644 backup/backup.cpp diff --git a/backup/Android.mk b/backup/Android.mk deleted file mode 100644 index b5803905..00000000 --- a/backup/Android.mk +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2009 The Android Open Source Project - -LOCAL_PATH:= $(call my-dir) -include $(CLEAR_VARS) - -LOCAL_SRC_FILES:= backup.cpp - -LOCAL_SHARED_LIBRARIES := libcutils libc - -LOCAL_MODULE:= rawbu - -LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES) -LOCAL_MODULE_TAGS := debug - -include $(BUILD_EXECUTABLE) diff --git a/backup/NOTICE b/backup/NOTICE deleted file mode 100644 index c5b1efa7..00000000 --- a/backup/NOTICE +++ /dev/null @@ -1,190 +0,0 @@ - - Copyright (c) 2005-2008, The Android Open Source Project - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - - - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ - - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - - 1. Definitions. - - "License" shall mean the terms and conditions for use, reproduction, - and distribution as defined by Sections 1 through 9 of this document. - - "Licensor" shall mean the copyright owner or entity authorized by - the copyright owner that is granting the License. - - "Legal Entity" shall mean the union of the acting entity and all - other entities that control, are controlled by, or are under common - control with that entity. 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If You - institute patent litigation against any entity (including a - cross-claim or counterclaim in a lawsuit) alleging that the Work - or a Contribution incorporated within the Work constitutes direct - or contributory patent infringement, then any patent licenses - granted to You under this License for that Work shall terminate - as of the date such litigation is filed. - - 4. Redistribution. You may reproduce and distribute copies of the - Work or Derivative Works thereof in any medium, with or without - modifications, and in Source or Object form, provided that You - meet the following conditions: - - (a) You must give any other recipients of the Work or - Derivative Works a copy of this License; and - - (b) You must cause any modified files to carry prominent notices - stating that You changed the files; and - - (c) You must retain, in the Source form of any Derivative Works - that You distribute, all copyright, patent, trademark, and - attribution notices from the Source form of the Work, - excluding those notices that do not pertain to any part of - the Derivative Works; and - - (d) If the Work includes a "NOTICE" text file as part of its - distribution, then any Derivative Works that You distribute must - include a readable copy of the attribution notices contained - within such NOTICE file, excluding those notices that do not - pertain to any part of the Derivative Works, in at least one - of the following places: within a NOTICE text file distributed - as part of the Derivative Works; within the Source form or - documentation, if provided along with the Derivative Works; or, - within a display generated by the Derivative Works, if and - wherever such third-party notices normally appear. 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In no event and under no legal theory, - whether in tort (including negligence), contract, or otherwise, - unless required by applicable law (such as deliberate and grossly - negligent acts) or agreed to in writing, shall any Contributor be - liable to You for damages, including any direct, indirect, special, - incidental, or consequential damages of any character arising as a - result of this License or out of the use or inability to use the - Work (including but not limited to damages for loss of goodwill, - work stoppage, computer failure or malfunction, or any and all - other commercial damages or losses), even if such Contributor - has been advised of the possibility of such damages. - - 9. Accepting Warranty or Additional Liability. While redistributing - the Work or Derivative Works thereof, You may choose to offer, - and charge a fee for, acceptance of support, warranty, indemnity, - or other liability obligations and/or rights consistent with this - License. However, in accepting such obligations, You may act only - on Your own behalf and on Your sole responsibility, not on behalf - of any other Contributor, and only if You agree to indemnify, - defend, and hold each Contributor harmless for any liability - incurred by, or claims asserted against, such Contributor by reason - of your accepting any such warranty or additional liability. - - END OF TERMS AND CONDITIONS - diff --git a/backup/backup.cpp b/backup/backup.cpp deleted file mode 100644 index 22c016d7..00000000 --- a/backup/backup.cpp +++ /dev/null @@ -1,700 +0,0 @@ -// Copyright 2009 The Android Open Source Project - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include - -#ifndef PATH_MAX -#define PATH_MAX 4096 -#endif - -#define FILE_VERSION 0xffff0001 - -namespace android { - -static char nameBuffer[PATH_MAX]; -static struct stat statBuffer; - -static char copyBuffer[8192]; - -#define SPECIAL_NO_TOUCH 0 -#define SPECIAL_NO_BACKUP 1 - -struct special_dir { - const char* path; - int type; -}; - -/* Directory paths that we will not backup/restore */ -static const struct special_dir SKIP_PATHS[] = { - { "/data/misc", SPECIAL_NO_TOUCH }, - { "/data/system/batterystats.bin", SPECIAL_NO_TOUCH }, - { "/data/system/location", SPECIAL_NO_TOUCH }, - { "/data/dalvik-cache", SPECIAL_NO_BACKUP }, - { NULL, 0 }, -}; - -/* This is just copied from the shell's built-in wipe command. */ -static int wipe (const char *path) -{ - DIR *dir; - struct dirent *de; - int ret; - int i; - - dir = opendir(path); - - if (dir == NULL) { - fprintf (stderr, "Error opendir'ing %s: %s\n", - path, strerror(errno)); - return 0; - } - - char *filenameOffset; - - strcpy(nameBuffer, path); - strcat(nameBuffer, "/"); - - filenameOffset = nameBuffer + strlen(nameBuffer); - - for (;;) { - de = readdir(dir); - - if (de == NULL) { - break; - } - - if (0 == strcmp(de->d_name, ".") - || 0 == strcmp(de->d_name, "..") - || 0 == strcmp(de->d_name, "lost+found") - ) { - continue; - } - - strcpy(filenameOffset, de->d_name); - bool noBackup = false; - - /* See if this is a path we should skip. */ - for (i = 0; SKIP_PATHS[i].path; i++) { - if (strcmp(SKIP_PATHS[i].path, nameBuffer) == 0) { - if (SKIP_PATHS[i].type == SPECIAL_NO_BACKUP) { - // In this case we aren't backing up the directory -- - // we do want to wipe its contents, but not the - // directory itself, since the restore file won't - // contain the directory. - noBackup = true; - } - break; - } - } - if (!noBackup && SKIP_PATHS[i].path != NULL) { - continue; - } - - ret = lstat (nameBuffer, &statBuffer); - - if (ret != 0) { - fprintf(stderr, "warning -- stat() error on '%s': %s\n", - nameBuffer, strerror(errno)); - continue; - } - - if(S_ISDIR(statBuffer.st_mode)) { - int i; - char *newpath; - - newpath = strdup(nameBuffer); - if (wipe(newpath) == 0) { - free(newpath); - closedir(dir); - return 0; - } - - if (!noBackup) { - ret = rmdir(newpath); - if (ret != 0) { - fprintf(stderr, "warning -- rmdir() error on '%s': %s\n", - newpath, strerror(errno)); - } - } - - free(newpath); - - strcpy(nameBuffer, path); - strcat(nameBuffer, "/"); - - } else { - ret = unlink(nameBuffer); - - if (ret != 0) { - fprintf(stderr, "warning -- unlink() error on '%s': %s\n", - nameBuffer, strerror(errno)); - } - } - } - - closedir(dir); - - return 1; -} - -static int write_int32(FILE* fh, int32_t val) -{ - int res = fwrite(&val, 1, sizeof(val), fh); - if (res != sizeof(val)) { - fprintf(stderr, "unable to write int32 (%d bytes): %s\n", res, strerror(errno)); - return 0; - } - - return 1; -} - -static int write_int64(FILE* fh, int64_t val) -{ - int res = fwrite(&val, 1, sizeof(val), fh); - if (res != sizeof(val)) { - fprintf(stderr, "unable to write int64 (%d bytes): %s\n", res, strerror(errno)); - return 0; - } - - return 1; -} - -static int copy_file(FILE* dest, FILE* src, off_t size, const char* destName, - const char* srcName) -{ - errno = 0; - - off_t origSize = size; - - while (size > 0) { - int amt = size > (off_t)sizeof(copyBuffer) ? sizeof(copyBuffer) : (int)size; - int readLen = fread(copyBuffer, 1, amt, src); - if (readLen <= 0) { - if (srcName != NULL) { - fprintf(stderr, "unable to read source (%d of %ld bytes) file '%s': %s\n", - amt, origSize, srcName, errno != 0 ? strerror(errno) : "unexpected EOF"); - } else { - fprintf(stderr, "unable to read buffer (%d of %ld bytes): %s\n", - amt, origSize, errno != 0 ? strerror(errno) : "unexpected EOF"); - } - return 0; - } - int writeLen = fwrite(copyBuffer, 1, readLen, dest); - if (writeLen != readLen) { - if (destName != NULL) { - fprintf(stderr, "unable to write file (%d of %d bytes) '%s': '%s'\n", - writeLen, readLen, destName, strerror(errno)); - } else { - fprintf(stderr, "unable to write buffer (%d of %d bytes): '%s'\n", - writeLen, readLen, strerror(errno)); - } - return 0; - } - size -= readLen; - } - return 1; -} - -#define TYPE_END 0 -#define TYPE_DIR 1 -#define TYPE_FILE 2 - -static int write_header(FILE* fh, int type, const char* path, const struct stat* st) -{ - int pathLen = strlen(path); - if (!write_int32(fh, type)) return 0; - if (!write_int32(fh, pathLen)) return 0; - if (fwrite(path, 1, pathLen, fh) != (size_t)pathLen) { - fprintf(stderr, "unable to write: %s\n", strerror(errno)); - return 0; - } - - if (!write_int32(fh, st->st_uid)) return 0; - if (!write_int32(fh, st->st_gid)) return 0; - if (!write_int32(fh, st->st_mode)) return 0; - if (!write_int64(fh, ((int64_t)st->st_atime)*1000*1000*1000)) return 0; - if (!write_int64(fh, ((int64_t)st->st_mtime)*1000*1000*1000)) return 0; - if (!write_int64(fh, ((int64_t)st->st_ctime)*1000*1000*1000)) return 0; - - return 1; -} - -static int backup_dir(FILE* fh, const char* srcPath) -{ - DIR *dir; - struct dirent *de; - char* fullPath = NULL; - int srcLen = strlen(srcPath); - int result = 1; - int i; - - dir = opendir(srcPath); - - if (dir == NULL) { - fprintf (stderr, "error opendir'ing '%s': %s\n", - srcPath, strerror(errno)); - return 0; - } - - for (;;) { - de = readdir(dir); - - if (de == NULL) { - break; - } - - if (0 == strcmp(de->d_name, ".") - || 0 == strcmp(de->d_name, "..") - || 0 == strcmp(de->d_name, "lost+found") - ) { - continue; - } - - if (fullPath == NULL) { - free(fullPath); - } - fullPath = (char*)malloc(srcLen + strlen(de->d_name) + 2); - strcpy(fullPath, srcPath); - fullPath[srcLen] = '/'; - strcpy(fullPath+srcLen+1, de->d_name); - - /* See if this is a path we should skip. */ - for (i = 0; SKIP_PATHS[i].path; i++) { - if (strcmp(SKIP_PATHS[i].path, fullPath) == 0) { - break; - } - } - if (SKIP_PATHS[i].path != NULL) { - continue; - } - - int ret = lstat(fullPath, &statBuffer); - - if (ret != 0) { - fprintf(stderr, "stat() error on '%s': %s\n", - fullPath, strerror(errno)); - result = 0; - goto done; - } - - if(S_ISDIR(statBuffer.st_mode)) { - printf("Processing dir %s...\n", fullPath); - - if (write_header(fh, TYPE_DIR, fullPath, &statBuffer) == 0) { - result = 0; - goto done; - } - if (backup_dir(fh, fullPath) == 0) { - result = 0; - goto done; - } - } else { - printf("Processing file %s...\n", fullPath); - - if (write_header(fh, TYPE_FILE, fullPath, &statBuffer) == 0) { - result = 0; - goto done; - } - - off_t size = statBuffer.st_size; - if (!write_int64(fh, size)) { - result = 0; - goto done; - } - - FILE* src = fopen(fullPath, "r"); - if (src == NULL) { - fprintf(stderr, "unable to open source file '%s': %s\n", - fullPath, strerror(errno)); - result = 0; - goto done; - } - - int copyres = copy_file(fh, src, size, NULL, fullPath); - fclose(src); - if (!copyres) { - result = 0; - goto done; - } - } - } - -done: - if (fullPath != NULL) { - free(fullPath); - } - - closedir(dir); - - return result; -} - -static int backup_data(const char* destPath) -{ - int res = -1; - - FILE* fh = fopen(destPath, "w"); - if (fh == NULL) { - fprintf(stderr, "unable to open destination '%s': %s\n", - destPath, strerror(errno)); - return -1; - } - - printf("Backing up /data to %s...\n", destPath); - - if (!write_int32(fh, FILE_VERSION)) goto done; - if (!backup_dir(fh, "/data")) goto done; - if (!write_int32(fh, 0)) goto done; - - res = 0; - -done: - if (fflush(fh) != 0) { - fprintf(stderr, "error flushing destination '%s': %s\n", - destPath, strerror(errno)); - res = -1; - goto donedone; - } - if (fsync(fileno(fh)) != 0) { - fprintf(stderr, "error syncing destination '%s': %s\n", - destPath, strerror(errno)); - res = -1; - goto donedone; - } - fclose(fh); - sync(); - -donedone: - return res; -} - -static int32_t read_int32(FILE* fh, int32_t defVal) -{ - int32_t val; - if (fread(&val, 1, sizeof(val), fh) != sizeof(val)) { - fprintf(stderr, "unable to read: %s\n", strerror(errno)); - return defVal; - } - - return val; -} - -static int64_t read_int64(FILE* fh, int64_t defVal) -{ - int64_t val; - if (fread(&val, 1, sizeof(val), fh) != sizeof(val)) { - fprintf(stderr, "unable to read: %s\n", strerror(errno)); - return defVal; - } - - return val; -} - -static int read_header(FILE* fh, int* type, char** path, struct stat* st) -{ - *type = read_int32(fh, -1); - if (*type == TYPE_END) { - return 1; - } - - if (*type < 0) { - fprintf(stderr, "bad token %d in restore file\n", *type); - return 0; - } - - int32_t pathLen = read_int32(fh, -1); - if (pathLen <= 0) { - fprintf(stderr, "bad path length %d in restore file\n", pathLen); - return 0; - } - char* readPath = (char*)malloc(pathLen+1); - if (fread(readPath, 1, pathLen, fh) != (size_t)pathLen) { - fprintf(stderr, "truncated path in restore file\n"); - free(readPath); - return 0; - } - readPath[pathLen] = 0; - *path = readPath; - - st->st_uid = read_int32(fh, -1); - if (st->st_uid == (uid_t)-1) { - fprintf(stderr, "bad uid in restore file at '%s'\n", readPath); - return 0; - } - st->st_gid = read_int32(fh, -1); - if (st->st_gid == (gid_t)-1) { - fprintf(stderr, "bad gid in restore file at '%s'\n", readPath); - return 0; - } - st->st_mode = read_int32(fh, -1); - if (st->st_mode == (mode_t)-1) { - fprintf(stderr, "bad mode in restore file at '%s'\n", readPath); - return 0; - } - int64_t ltime = read_int64(fh, -1); - if (ltime < 0) { - fprintf(stderr, "bad atime in restore file at '%s'\n", readPath); - return 0; - } - st->st_atime = (time_t)(ltime/1000/1000/1000); - ltime = read_int64(fh, -1); - if (ltime < 0) { - fprintf(stderr, "bad mtime in restore file at '%s'\n", readPath); - return 0; - } - st->st_mtime = (time_t)(ltime/1000/1000/1000); - ltime = read_int64(fh, -1); - if (ltime < 0) { - fprintf(stderr, "bad ctime in restore file at '%s'\n", readPath); - return 0; - } - st->st_ctime = (time_t)(ltime/1000/1000/1000); - - st->st_mode &= (S_IRWXU|S_IRWXG|S_IRWXO); - - return 1; -} - -static int restore_data(const char* srcPath) -{ - int res = -1; - - FILE* fh = fopen(srcPath, "r"); - if (fh == NULL) { - fprintf(stderr, "Unable to open source '%s': %s\n", - srcPath, strerror(errno)); - return -1; - } - - if (read_int32(fh, 0) != (int32_t)FILE_VERSION) { - fprintf(stderr, "Restore file has bad version\n"); - goto done; - } - - printf("Wiping contents of /data...\n"); - if (!wipe("/data")) { - goto done; - } - - printf("Restoring from %s to /data...\n", srcPath); - - while (1) { - int type; - char* path = NULL; - if (read_header(fh, &type, &path, &statBuffer) == 0) { - goto done; - } - if (type == 0) { - break; - } - - const char* typeName = "?"; - - if (type == TYPE_DIR) { - typeName = "dir"; - - printf("Processing dir %s...\n", path); - - if (mkdir(path, statBuffer.st_mode) != 0) { - if (errno != EEXIST) { - fprintf(stderr, "unable to create directory '%s': %s\n", - path, strerror(errno)); - free(path); - goto done; - } - } - - } else if (type == TYPE_FILE) { - typeName = "file"; - off_t size = read_int64(fh, -1); - if (size < 0) { - fprintf(stderr, "bad file size %ld in restore file\n", size); - free(path); - goto done; - } - - printf("Processing file %s...\n", path); - - FILE* dest = fopen(path, "w"); - if (dest == NULL) { - fprintf(stderr, "unable to open destination file '%s': %s\n", - path, strerror(errno)); - free(path); - goto done; - } - - int copyres = copy_file(dest, fh, size, path, NULL); - fclose(dest); - if (!copyres) { - free(path); - goto done; - } - - } else { - fprintf(stderr, "unknown node type %d\n", type); - goto done; - } - - // Do this even for directories, since the dir may have already existed - // so we need to make sure it gets the correct mode. - if (chmod(path, statBuffer.st_mode&(S_IRWXU|S_IRWXG|S_IRWXO)) != 0) { - fprintf(stderr, "unable to chmod destination %s '%s' to 0x%x: %s\n", - typeName, path, statBuffer.st_mode, strerror(errno)); - free(path); - goto done; - } - - if (chown(path, statBuffer.st_uid, statBuffer.st_gid) != 0) { - fprintf(stderr, "unable to chown destination %s '%s' to uid %d / gid %d: %s\n", - typeName, path, (int)statBuffer.st_uid, (int)statBuffer.st_gid, strerror(errno)); - free(path); - goto done; - } - - struct utimbuf timbuf; - timbuf.actime = statBuffer.st_atime; - timbuf.modtime = statBuffer.st_mtime; - if (utime(path, &timbuf) != 0) { - fprintf(stderr, "unable to utime destination %s '%s': %s\n", - typeName, path, strerror(errno)); - free(path); - goto done; - } - - - free(path); - } - - res = 0; - -done: - fclose(fh); - - return res; -} - -static void show_help(const char *cmd) -{ - fprintf(stderr,"Usage: %s COMMAND [options] [backup-file-path]\n", cmd); - - fprintf(stderr, "commands are:\n" - " help Show this help text.\n" - " backup Perform a backup of /data.\n" - " restore Perform a restore of /data.\n"); - fprintf(stderr, "options include:\n" - " -h Show this help text.\n"); - fprintf(stderr, "\nThe %s command allows you to perform low-level\n" - "backup and restore of the /data partition. This is\n" - "where all user data is kept, allowing for a fairly\n" - "complete restore of a device's state. Note that\n" - "because this is low-level, it will only work across\n" - "builds of the same (or very similar) device software.\n", - cmd); -} - -} /* namespace android */ - -int main (int argc, char **argv) -{ - int restore = 0; - - if (getuid() != AID_ROOT) { - fprintf(stderr, "error -- %s must run as root\n", argv[0]); - exit(-1); - } - - if (argc < 2) { - fprintf(stderr, "No command specified.\n"); - android::show_help(argv[0]); - exit(-1); - } - - if (0 == strcmp(argv[1], "restore")) { - restore = 1; - } else if (0 == strcmp(argv[1], "help")) { - android::show_help(argv[0]); - exit(0); - } else if (0 != strcmp(argv[1], "backup")) { - fprintf(stderr, "Unknown command: %s\n", argv[1]); - android::show_help(argv[0]); - exit(-1); - } - - optind = 2; - - for (;;) { - int ret; - - ret = getopt(argc, argv, "h"); - - if (ret < 0) { - break; - } - - switch(ret) { - case 'h': - android::show_help(argv[0]); - exit(0); - break; - - default: - fprintf(stderr,"Unrecognized Option\n"); - android::show_help(argv[0]); - exit(-1); - break; - } - } - - const char* backupFile = "/sdcard/backup.dat"; - - if (argc > optind) { - backupFile = argv[optind]; - optind++; - if (argc != optind) { - fprintf(stderr, "Too many arguments\n"); - android::show_help(argv[0]); - exit(-1); - } - } - - printf("Stopping system...\n"); - property_set("ctl.stop", "runtime"); - property_set("ctl.stop", "zygote"); - sleep(1); - - int res; - if (restore) { - res = android::restore_data(backupFile); - if (res != 0) { - // Don't restart system, since the data partition is hosed. - return res; - } - printf("Restore complete! Restarting system, cross your fingers...\n"); - } else { - res = android::backup_data(backupFile); - if (res == 0) { - printf("Backup complete! Restarting system...\n"); - } else { - printf("Restarting system...\n"); - } - } - - property_set("ctl.start", "zygote"); - property_set("ctl.start", "runtime"); -} -- cgit v1.2.3