int check_backup_size(const char* backup_path) {
// these are the size stats for backup_path we previously refreshed by calling Get_Size_Via_statfs()
int total_mb = (int)(Total_Size / 1048576LLU);
int used_mb = (int)(Used_Size / 1048576LLU);
int free_mb = (int)(Free_Size / 1048576LLU);
int free_percent = free_mb * 100 / total_mb;
Before_Used_Size = Used_Size; // save Used_Size to refresh data written stats later
Backup_Size = 0;
// supported nandroid partitions
char* Base_Partitions_List[BASE_PARTITIONS_NUM] = {
"/recovery",
BOOT_PARTITION_MOUNT_POINT,
"/wimax",
"/modem",
"/radio",
"/efs",
"/misc",
"/system",
"/preload",
"/data",
"/datadata",
"/cache",
"/sd-ext"
};
int items_num = BASE_PARTITIONS_NUM + MAX_EXTRA_NANDROID_PARTITIONS + 1;
char* Partitions_List[items_num];
int i;
for (i = 0; i < BASE_PARTITIONS_NUM; ++i) {
Partitions_List[i] = Base_Partitions_List[i];
}
int extra_partitions_num = get_extra_partitions_state();
for (i = 0; i < extra_partitions_num; ++i) {
Partitions_List[BASE_PARTITIONS_NUM + i] = extra_partition[i].mount_point;
}
Partitions_List[BASE_PARTITIONS_NUM + extra_partitions_num] = NULL;
int preload_status = 0;
if ((is_custom_backup && backup_preload) || (!is_custom_backup && nandroid_add_preload.value))
preload_status = 1;
int Base_Partitions_Backup_Status[] = {
backup_recovery,
backup_boot,
backup_wimax,
backup_modem,
backup_radio,
backup_efs,
backup_misc,
backup_system,
preload_status,
backup_data,
backup_data,
backup_cache,
backup_sdext,
};
LOGI("Checking needed space for backup '%s'\n", backup_path);
// calculate needed space for backup
// assume recovery and wimax always use a raw backup mode (Is_Image() = 0)
char skipped_parts[1024] = "";
int ret = 0;
Volume* vol;
for (i = 0; Partitions_List[i] != NULL; ++i) {
if (i >= BASE_PARTITIONS_NUM) {
if (!extra_partition[i - BASE_PARTITIONS_NUM].backup_state)
continue;
} else if (!Base_Partitions_Backup_Status[i]) {
continue;
}
// size of /data will be calculated later for /data/media devices to subtract sdcard size from it
if (strcmp(Partitions_List[i], "/data") == 0 && is_data_media())
continue;
// redundant but keep for compatibility:
// has_datadata() does a volume_for_path() != NULL check
if (strcmp(Partitions_List[i], "/datadata") == 0 && !has_datadata())
continue;
vol = volume_for_path(Partitions_List[i]);
if (vol == NULL) continue;
if (Is_Image(Partitions_List[i]) == 0) {
if (Find_Partition_Size(Partitions_List[i]) == 0) {
Backup_Size += Total_Size;
LOGI("%s backup size (/proc)=%lluMb\n", Partitions_List[i], Total_Size / 1048576LLU); // debug
} else {
ret++;
strcat(skipped_parts, " - ");
strcat(skipped_parts, Partitions_List[i]);
}
} else if (Is_File_System(Partitions_List[i]) == 0) {
// Get_Size_Via_statfs() will ensure vol->mount_point != NULL
if (0 == ensure_path_mounted(vol->mount_point) && 0 == Get_Size_Via_statfs(vol->mount_point)) {
Backup_Size += Used_Size;
LOGI("%s backup size (stat)=%lluMb\n", Partitions_List[i], Used_Size / 1048576LLU); // debug
} else {
ret++;
strcat(skipped_parts, " - ");
strcat(skipped_parts, Partitions_List[i]);
}
} else {
ret++;
strcat(skipped_parts, " - Unknown file system: ");
strcat(skipped_parts, Partitions_List[i]);
}
}
// handle special partitions and folders:
// handle /data and /data/media partitions size for /data/media devices
unsigned long long data_backup_size = 0;
unsigned long long data_used_bytes = 0;
unsigned long long data_media_size = 0;
if (is_data_media() && (backup_data || backup_data_media)) {
if (0 == ensure_path_mounted("/data") && 0 == Get_Size_Via_statfs("/data")) {
data_media_size = Get_Folder_Size("/data/media");
data_used_bytes = Get_Folder_Size("/data");
data_backup_size = data_used_bytes - data_media_size;
LOGI("/data: tot size=%lluMb, free=%lluMb, backup size=%lluMb, used=%lluMb, media=%lluMb\n",
Total_Size/1048576LLU, Free_Size/1048576LLU, data_backup_size/1048576LLU,
data_used_bytes/1048576LLU, data_media_size/1048576LLU);
} else {
if (backup_data) {
strcat(skipped_parts, " - /data");
ret++;
}
if (backup_data_media) {
strcat(skipped_parts, " - /data/media");
ret++;
}
}
}
if (backup_data)
Backup_Size += data_backup_size;
// check if we are also backing up /data/media
// if backup_path is same as /data/media, ignore this as it will not be processed by nandroid_backup_datamedia()
if (backup_data_media && !is_data_media_volume_path(backup_path)) {
Backup_Size += data_media_size;
LOGI("included /data/media size\n"); // debug
}
// .android_secure size calculation
// set_android_secure_path() will mount tmp so no need to remount before calling Get_Folder_Size(tmp)
char tmp[PATH_MAX];
set_android_secure_path(tmp);
if (backup_data && android_secure_ext) {
unsigned long long andsec_size;
andsec_size = Get_Folder_Size(tmp);
Backup_Size += andsec_size;
LOGI("%s backup size=%lluMb\n", tmp, andsec_size / 1048576LLU); // debug
}
// check if we have the needed space
int backup_size_mb = (int)(Backup_Size / 1048576LLU);
ui_print("\n>> Free space: %dMb (%d%%)\n", free_mb, free_percent);
ui_print(">> Needed space: %dMb\n", backup_size_mb);
if (ret)
ui_print(">> Unknown partitions size (%d):%s\n", ret, skipped_parts);
// dedupe wrapper needs less space than actual backup size (incremental backups)
// only check free space in Mb if we use tar or tar.gz as a default format
// also, add extra 50 Mb for security measures
if (free_percent < 3 || (default_backup_handler != dedupe_compress_wrapper && free_mb < backup_size_mb + 50)) {
LOGW("Low space for backup!\n");
if (!ui_is_initialized()) {
// do not prompt when it is an "adb shell nandroid backup" command
LOGW("\n>>> Backup could fail with I/O error!! <<<\n\n");
} else if (nand_prompt_on_low_space.value && !confirm_selection("Low free space! Continue anyway?", "Yes - Continue Nandroid Job"))
return -1;
}
return 0;
}
bool TWPartition::Process_Fstab_Line(string Line, bool Display_Error) {
char full_line[MAX_FSTAB_LINE_LENGTH], item[MAX_FSTAB_LINE_LENGTH];
int line_len = Line.size(), index = 0, item_index = 0;
char* ptr;
string Flags;
strncpy(full_line, Line.c_str(), line_len);
for (index = 0; index < line_len; index++) {
if (full_line[index] <= 32)
full_line[index] = '\0';
}
Mount_Point = full_line;
LOGI("Processing '%s'\n", Mount_Point.c_str());
Backup_Path = Mount_Point;
index = Mount_Point.size();
while (index < line_len) {
while (index < line_len && full_line[index] == '\0')
index++;
if (index >= line_len)
continue;
ptr = full_line + index;
if (item_index == 0) {
// File System
Fstab_File_System = ptr;
Current_File_System = ptr;
item_index++;
} else if (item_index == 1) {
// Primary Block Device
if (Fstab_File_System == "mtd" || Fstab_File_System == "yaffs2") {
MTD_Name = ptr;
Find_MTD_Block_Device(MTD_Name);
} else if (Fstab_File_System == "bml") {
if (Mount_Point == "/boot")
MTD_Name = "boot";
else if (Mount_Point == "/recovery")
MTD_Name = "recovery";
Primary_Block_Device = ptr;
if (*ptr != '/')
LOGE("Until we get better BML support, you will have to find and provide the full block device path to the BML devices e.g. /dev/block/bml9 instead of the partition name\n");
} else if (*ptr != '/') {
if (Display_Error)
LOGE("Invalid block device on '%s', '%s', %i\n", Line.c_str(), ptr, index);
else
LOGI("Invalid block device on '%s', '%s', %i\n", Line.c_str(), ptr, index);
return 0;
} else {
Primary_Block_Device = ptr;
Find_Real_Block_Device(Primary_Block_Device, Display_Error);
}
item_index++;
} else if (item_index > 1) {
if (*ptr == '/') {
// Alternate Block Device
Alternate_Block_Device = ptr;
Find_Real_Block_Device(Alternate_Block_Device, Display_Error);
} else if (strlen(ptr) > 7 && strncmp(ptr, "length=", 7) == 0) {
// Partition length
ptr += 7;
Length = atoi(ptr);
} else if (strlen(ptr) > 6 && strncmp(ptr, "flags=", 6) == 0) {
// Custom flags, save for later so that new values aren't overwritten by defaults
ptr += 6;
Flags = ptr;
} else if (strlen(ptr) == 4 && (strncmp(ptr, "NULL", 4) == 0 || strncmp(ptr, "null", 4) == 0 || strncmp(ptr, "null", 4) == 0)) {
// Do nothing
} else {
// Unhandled data
LOGI("Unhandled fstab information: '%s', %i, line: '%s'\n", ptr, index, Line.c_str());
}
}
while (index < line_len && full_line[index] != '\0')
index++;
}
if (!Is_File_System(Fstab_File_System) && !Is_Image(Fstab_File_System)) {
if (Display_Error)
LOGE("Unknown File System: '%s'\n", Fstab_File_System.c_str());
else
LOGI("Unknown File System: '%s'\n", Fstab_File_System.c_str());
return 0;
} else if (Is_File_System(Fstab_File_System)) {
Find_Actual_Block_Device();
Setup_File_System(Display_Error);
if (Mount_Point == "/system") {
Display_Name = "System";
Wipe_Available_in_GUI = true;
} else if (Mount_Point == "/data") {
Display_Name = "Data";
Wipe_Available_in_GUI = true;
Wipe_During_Factory_Reset = true;
#ifdef RECOVERY_SDCARD_ON_DATA
Has_Data_Media = true;
Is_Storage = true;
Storage_Path = "/data/media";
if (strcmp(EXPAND(TW_EXTERNAL_STORAGE_PATH), "/sdcard") == 0) {
Make_Dir("/emmc", Display_Error);
Symlink_Path = "/data/media";
Symlink_Mount_Point = "/emmc";
} else {
Make_Dir("/sdcard", Display_Error);
Symlink_Path = "/data/media";
Symlink_Mount_Point = "/sdcard";
}
#endif
#ifdef TW_INCLUDE_CRYPTO
Can_Be_Encrypted = true;
char crypto_blkdev[255];
property_get("ro.crypto.fs_crypto_blkdev", crypto_blkdev, "error");
if (strcmp(crypto_blkdev, "error") != 0) {
DataManager::SetValue(TW_DATA_BLK_DEVICE, Primary_Block_Device);
DataManager::SetValue(TW_IS_DECRYPTED, 1);
Is_Encrypted = true;
Is_Decrypted = true;
Decrypted_Block_Device = crypto_blkdev;
LOGI("Data already decrypted, new block device: '%s'\n", crypto_blkdev);
} else if (!Mount(false)) {
Is_Encrypted = true;
Is_Decrypted = false;
DataManager::SetValue(TW_IS_ENCRYPTED, 1);
DataManager::SetValue(TW_CRYPTO_PASSWORD, "");
DataManager::SetValue("tw_crypto_display", "");
}
#ifdef RECOVERY_SDCARD_ON_DATA
if (!Is_Encrypted || (Is_Encrypted && Is_Decrypted))
Recreate_Media_Folder();
#endif
#else
#ifdef RECOVERY_SDCARD_ON_DATA
Recreate_Media_Folder();
#endif
#endif
} else if (Mount_Point == "/cache") {
Display_Name = "Cache";
Wipe_Available_in_GUI = true;
Wipe_During_Factory_Reset = true;
if (Mount(false) && !TWFunc::Path_Exists("/cache/recovery/.")) {
string Recreate_Command = "cd /cache && mkdir recovery";
LOGI("Recreating /cache/recovery folder.\n");
system(Recreate_Command.c_str());
}
} else if (Mount_Point == "/datadata") {
Wipe_During_Factory_Reset = true;
Display_Name = "DataData";
Is_SubPartition = true;
SubPartition_Of = "/data";
DataManager::SetValue(TW_HAS_DATADATA, 1);
} else if (Mount_Point == "/sd-ext") {
Wipe_During_Factory_Reset = true;
Display_Name = "SD-Ext";
Wipe_Available_in_GUI = true;
Removable = true;
} else if (Mount_Point == "/boot") {
Display_Name = "Boot";
DataManager::SetValue("tw_boot_is_mountable", 1);
}
#ifdef TW_EXTERNAL_STORAGE_PATH
if (Mount_Point == EXPAND(TW_EXTERNAL_STORAGE_PATH)) {
Is_Storage = true;
Storage_Path = EXPAND(TW_EXTERNAL_STORAGE_PATH);
Removable = true;
}
#else
if (Mount_Point == "/sdcard") {
Is_Storage = true;
Storage_Path = "/sdcard";
Removable = true;
#ifndef RECOVERY_SDCARD_ON_DATA
Setup_AndSec();
Mount_Storage_Retry();
#endif
}
#endif
#ifdef TW_INTERNAL_STORAGE_PATH
if (Mount_Point == EXPAND(TW_INTERNAL_STORAGE_PATH)) {
Is_Storage = true;
Storage_Path = EXPAND(TW_INTERNAL_STORAGE_PATH);
#ifndef RECOVERY_SDCARD_ON_DATA
Setup_AndSec();
Mount_Storage_Retry();
#endif
}
#else
if (Mount_Point == "/emmc") {
Is_Storage = true;
Storage_Path = "/emmc";
#ifndef RECOVERY_SDCARD_ON_DATA
Setup_AndSec();
Mount_Storage_Retry();
#endif
}
#endif
} else if (Is_Image(Fstab_File_System)) {
Find_Actual_Block_Device();
Setup_Image(Display_Error);
}
// Process any custom flags
if (Flags.size() > 0)
Process_Flags(Flags, Display_Error);
return true;
}
