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partitionmanager.cpp
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/*
Copyright 2014 to 2020 TeamWin
This file is part of TWRP/TeamWin Recovery Project.
Copyright 2018 ATG Droid
This file is part of RWRP/RedWolf Recovery Project
Copyright 2018 AndroiableDroid
This file is part of PitchBlack Recovery Project
TWRP is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
TWRP is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with TWRP.If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/vfs.h>
#include <unistd.h>
#include <map>
#include <vector>
#include <dirent.h>
#include <time.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <pwd.h>
#include <zlib.h>
#include <iostream>
#include <iomanip>
#include <sys/wait.h>
#include <linux/fs.h>
#include <sys/mount.h>
#include <sys/poll.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <linux/types.h>
#include <linux/netlink.h>
#include <android-base/chrono_utils.h>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <fstab/fstab.h>
#include <fs_avb/fs_avb.h>
#include <fs_mgr.h>
#include <fs_mgr_dm_linear.h>
#include <fs_mgr_overlayfs.h>
#include <fs_mgr/roots.h>
#include <libgsi/libgsi.h>
#include <liblp/liblp.h>
#include <libgsi/libgsi.h>
#include <liblp/builder.h>
#include <libsnapshot/snapshot.h>
#include "variables.h"
#include "twcommon.h"
#include "partitions.hpp"
#include "data.hpp"
#include "twrp-functions.hpp"
#include "fixContexts.hpp"
#include "exclude.hpp"
#include "set_metadata.h"
#include "tw_atomic.hpp"
#include "gui/gui.hpp"
#include "progresstracking.hpp"
#include "twrpDigestDriver.hpp"
#include "twrpRepacker.hpp"
#include "adbbu/libtwadbbu.hpp"
#ifdef TW_HAS_MTP
#ifdef TW_HAS_LEGACY_MTP
#include "mtp/legacy/mtp_MtpServer.hpp"
#include "mtp/legacy/twrpMtp.hpp"
#include "mtp/legacy/MtpMessage.hpp"
#else
#include "mtp/ffs/mtp_MtpServer.hpp"
#include "mtp/ffs/twrpMtp.hpp"
#include "mtp/ffs/MtpMessage.hpp"
#endif
#endif
extern "C"
{
#include "cutils/properties.h"
#include "gui/gui.h"
}
#ifdef TW_INCLUDE_CRYPTO
#include "crypto/fde/cryptfs.h"
#include "gui/rapidxml.hpp"
#include "gui/pages.hpp"
#ifdef TW_INCLUDE_FBE
#include "Decrypt.h"
#ifdef TW_INCLUDE_FBE_METADATA_DECRYPT
#ifdef USE_FSCRYPT
#include "MetadataCrypt.h"
#endif
#endif
#endif
#ifdef TW_CRYPTO_USE_SYSTEM_VOLD
#include "crypto/vold_decrypt/vold_decrypt.h"
#endif
#endif
#ifdef AB_OTA_UPDATER
#include <hardware/hardware.h>
#include <hardware/boot_control.h>
#endif
using android::fs_mgr::DestroyLogicalPartition;
using android::fs_mgr::Fstab;
using android::fs_mgr::FstabEntry;
using android::fs_mgr::MetadataBuilder;
extern bool datamedia;
std::vector<users_struct> Users_List;
TWPartitionManager::TWPartitionManager(void) {
mtp_was_enabled = false;
mtp_write_fd = -1;
uevent_pfd.fd = -1;
stop_backup.set_value (0);
#ifdef AB_OTA_UPDATER
char slot_suffix[PROPERTY_VALUE_MAX];
property_get ("ro.boot.slot_suffix", slot_suffix, "error");
if (strcmp (slot_suffix, "error") == 0)
property_get ("ro.boot.slot", slot_suffix, "error");
Active_Slot_Display = "";
if (strcmp (slot_suffix, "_a") == 0 || strcmp (slot_suffix, "a") == 0)
Set_Active_Slot ("A");
else
Set_Active_Slot ("B");
#endif
}
int TWPartitionManager::Set_FDE_Encrypt_Status(void) {
property_set("ro.crypto.state", "encrypted");
property_set("ro.crypto.type", "block");
// Sleep for a bit so that services can start if needed
sleep(1);
return 0;
}
int
TWPartitionManager::Process_Fstab (string Fstab_Filename, bool Display_Error, bool Sar_Detect)
{
FILE *fstabFile;
char fstab_line[MAX_FSTAB_LINE_LENGTH];
TWPartition *settings_partition = NULL;
TWPartition *andsec_partition = NULL;
unsigned int storageid = 1 << 16; // upper 16 bits are for physical storage device, we pretend to have only one
std::map < string, Flags_Map > twrp_flags;
fstabFile = fopen ("/system/etc/twrp.flags", "rt");
if (fstabFile == NULL) fstabFile = fopen ("/etc/twrp.flags", "rt");
if (fstabFile != NULL)
{
LOGINFO ("reading /etc/twrp.flags\n");
while (fgets (fstab_line, sizeof (fstab_line), fstabFile) != NULL)
{
if (fstab_line[0] != '/')
continue;
size_t line_size = strlen (fstab_line);
if (fstab_line[line_size - 1] != '\n')
fstab_line[line_size] = '\n';
Flags_Map line_flags;
line_flags.Primary_Block_Device = "";
line_flags.Alternate_Block_Device = "";
line_flags.fstab_line = (char *) malloc (MAX_FSTAB_LINE_LENGTH);
if (!line_flags.fstab_line)
{
LOGERR ("malloc error on line_flags.fstab_line\n");
return false;
}
memcpy (line_flags.fstab_line, fstab_line, MAX_FSTAB_LINE_LENGTH);
bool found_separator = false;
char *fs_loc = NULL;
char *block_loc = NULL;
char *flags_loc = NULL;
size_t index, item_index = 0;
for (index = 0; index < line_size; index++)
{
if (fstab_line[index] <= 32)
{
fstab_line[index] = '\0';
found_separator = true;
}
else if (found_separator)
{
if (item_index == 0)
{
fs_loc = fstab_line + index;
}
else if (item_index == 1)
{
block_loc = fstab_line + index;
}
else if (item_index > 1)
{
char *ptr = fstab_line + index;
if (*ptr == '/')
{
line_flags.Alternate_Block_Device = ptr;
}
else if (strlen(ptr) > strlen ("flags=") && strncmp(ptr, "flags=", strlen("flags=")) == 0)
{
flags_loc = ptr;
// Once we find the flags=, we're done scanning the line
break;
}
}
found_separator = false;
item_index++;
}
}
if (block_loc)
line_flags.Primary_Block_Device = block_loc;
if (fs_loc)
line_flags.File_System = fs_loc;
if (flags_loc)
line_flags.Flags = flags_loc;
string Mount_Point = fstab_line;
twrp_flags[Mount_Point] = line_flags;
memset (fstab_line, 0, sizeof (fstab_line));
}
fclose (fstabFile);
}
fstabFile = fopen (Fstab_Filename.c_str (), "rt");
if (fstabFile == NULL)
{
LOGERR ("Critical Error: Unable to open fstab at '%s'.\n",
Fstab_Filename.c_str ());
return false;
}
else
LOGINFO ("Reading %s\n", Fstab_Filename.c_str ());
while (fgets (fstab_line, sizeof (fstab_line), fstabFile) != NULL)
{
bool isSuper = Is_Super_Partition(fstab_line);
if (!isSuper && fstab_line[0] != '/')
continue;
if (strstr (fstab_line, "swap"))
continue; // Skip swap in recovery
size_t line_size = strlen (fstab_line);
if (fstab_line[line_size - 1] != '\n')
fstab_line[line_size] = '\n';
TWPartition *partition = new TWPartition ();
if (partition->Process_Fstab_Line(fstab_line, Display_Error, &twrp_flags, Sar_Detect))
Partitions.push_back (partition);
else
delete partition;
memset (fstab_line, 0, sizeof (fstab_line));
}
fclose (fstabFile);
if (twrp_flags.size () > 0)
{
LOGINFO ("Processing remaining twrp.flags\n");
// Add any items from twrp.flags that did not exist in the recovery.fstab
for (std::map < string, Flags_Map >::iterator mapit =
twrp_flags.begin (); mapit != twrp_flags.end (); mapit++)
{
if (Find_Partition_By_Path (mapit->first) == NULL)
{
TWPartition *partition = new TWPartition ();
if (partition->
Process_Fstab_Line (mapit->second.fstab_line, Display_Error,
NULL, Sar_Detect))
Partitions.push_back (partition);
else
delete partition;
}
if (mapit->second.fstab_line)
free (mapit->second.fstab_line);
mapit->second.fstab_line = NULL;
}
}
if (Get_Super_Status()) {
Setup_Super_Devices();
}
LOGINFO ("Done processing fstab files\n");
std::vector < TWPartition * >::iterator iter;
for (iter = Partitions.begin (); iter != Partitions.end (); iter++)
{
if (Sar_Detect) {
if ((*iter)->Mount_Point == "/s")
return true;
else
continue;
}
(*iter)->Partition_Post_Processing (Display_Error);
if ((*iter)->Is_Storage)
{
++storageid;
(*iter)->MTP_Storage_ID = storageid;
}
if (!settings_partition && (*iter)->Is_Settings_Storage
&& (*iter)->Is_Present)
settings_partition = (*iter);
else
(*iter)->Is_Settings_Storage = false;
if (!andsec_partition && (*iter)->Has_Android_Secure
&& (*iter)->Is_Present)
andsec_partition = (*iter);
else
(*iter)->Has_Android_Secure = false;
if (Is_Super_Partition(TWFunc::Remove_Beginning_Slash((*iter)->Get_Mount_Point()).c_str())) {
Prepare_Super_Volume((*iter));
}
}
// Setup Apex before decrypt
TWPartition* sys = PartitionManager.Find_Partition_By_Path(PartitionManager.Get_Android_Root_Path());
TWPartition* ven = PartitionManager.Find_Partition_By_Path("/vendor");
if (sys) {
if (sys->Get_Super_Status()) {
sys->Mount(true);
if (ven) {
ven->Mount(true);
}
#ifdef TW_EXCLUDE_APEX
LOGINFO("Apex is disabled in this build\n");
#else
twrpApex apex;
if (!apex.loadApexImages()) {
LOGERR("Unable to load apex images from %s\n", APEX_DIR);
property_set("twrp.apex.loaded", "false");
} else {
property_set("twrp.apex.loaded", "true");
}
TWFunc::check_and_run_script("/sbin/resyncapex.sh", "apex");
#endif
}
}
if (ven)
ven->UnMount(true);
if (sys)
sys->UnMount(true);
if (!datamedia && !settings_partition
&& Find_Partition_By_Path ("/sdcard") == NULL
&& Find_Partition_By_Path ("/internal_sd") == NULL
&& Find_Partition_By_Path ("/internal_sdcard") == NULL
&& Find_Partition_By_Path ("/emmc") == NULL)
{
// Attempt to automatically identify /data/media emulated storage devices
TWPartition *Dat = Find_Partition_By_Path ("/data");
if (Dat)
{
LOGINFO
("Using automatic handling for /data/media emulated storage device.\n");
datamedia = true;
Dat->Setup_Data_Media ();
settings_partition = Dat;
// Since /data was not considered a storage partition earlier, we still need to assign an MTP ID
++storageid;
Dat->MTP_Storage_ID = storageid;
}
}
if (!settings_partition)
{
for (iter = Partitions.begin (); iter != Partitions.end (); iter++)
{
if ((*iter)->Is_Storage)
{
settings_partition = (*iter);
break;
}
}
if (!settings_partition)
LOGERR
("Unable to locate storage partition for storing settings file.\n");
}
if (!Write_Fstab ())
{
if (Display_Error)
LOGERR ("Error creating fstab\n");
else
LOGINFO ("Error creating fstab\n");
}
if (andsec_partition)
{
Setup_Android_Secure_Location (andsec_partition);
}
else if (settings_partition)
{
Setup_Android_Secure_Location (settings_partition);
}
if (settings_partition)
{
Setup_Settings_Storage_Partition (settings_partition);
}
#ifdef TW_INCLUDE_CRYPTO
DataManager::SetValue(TW_IS_ENCRYPTED, 1);
Decrypt_Data();
#endif
Update_System_Details();
if (Get_Super_Status())
Setup_Super_Partition();
UnMount_Main_Partitions();
#ifdef AB_OTA_UPDATER
DataManager::SetValue("tw_active_slot", Get_Active_Slot_Display());
#endif
setup_uevent();
return true;
}
int TWPartitionManager::Write_Fstab(void) {
FILE *fp;
std::vector<TWPartition*>::iterator iter;
string Line;
fp = fopen("/etc/fstab", "w");
if (fp == NULL) {
LOGINFO("Can not open /etc/fstab.\n");
return false;
}
for (iter = Partitions.begin(); iter != Partitions.end(); iter++) {
if ((*iter)->Can_Be_Mounted) {
Line = (*iter)->Actual_Block_Device + " " + (*iter)->Mount_Point + " " + (*iter)->Current_File_System +
((*iter)->Mount_Read_Only ? " ro " : " rw ") + "0 0\n";
fputs(Line.c_str(), fp);
}
// Handle subpartition tracking
if ((*iter)->Is_SubPartition) {
TWPartition* ParentPartition = Find_Partition_By_Path((*iter)->SubPartition_Of);
if (ParentPartition)
ParentPartition->Has_SubPartition = true;
else
LOGERR("Unable to locate parent partition '%s' of '%s'\n", (*iter)->SubPartition_Of.c_str(), (*iter)->Mount_Point.c_str());
}
}
fclose(fp);
return true;
}
void TWPartitionManager::Decrypt_Data() {
#ifdef TW_INCLUDE_CRYPTO
TWPartition *Decrypt_Data = Find_Partition_By_Path ("/data");
if (Decrypt_Data && Decrypt_Data->Is_Encrypted && !Decrypt_Data->Is_Decrypted) {
property_set("ro.crypto.state", "encrypted");
if (!Decrypt_Data->Key_Directory.empty() && Mount_By_Path(Decrypt_Data->Key_Directory, false)) {
property_set("ro.crypto.type", "file");
#ifdef TW_INCLUDE_FBE_METADATA_DECRYPT
#ifdef USE_FSCRYPT
if (fscrypt_mount_metadata_encrypted(Decrypt_Data->Actual_Block_Device, Decrypt_Data->Mount_Point, false)) {
std::string crypto_blkdev = android::base::GetProperty("ro.crypto.fs_crypto_blkdev", "error");
Decrypt_Data->Decrypted_Block_Device = crypto_blkdev;
LOGINFO("Successfully decrypted metadata encrypted data partition with new block device: '%s'\n", crypto_blkdev.c_str());
#endif
Decrypt_Data->Is_Decrypted = true; // Needed to make the mount function work correctly
int retry_count = 10;
while (!Decrypt_Data->Mount(false) && --retry_count)
usleep(500);
if (Decrypt_Data->Mount(false)) {
if (!Decrypt_Data->Decrypt_FBE_DE()) {
char wrappedvalue[PROPERTY_VALUE_MAX];
property_get("fbe.data.wrappedkey", wrappedvalue, "");
std::string wrappedkeyvalue(wrappedvalue);
if (wrappedkeyvalue == "true") {
LOGERR("Unable to decrypt FBE device\n");
} else {
LOGINFO("Trying wrapped key.\n");
property_set("fbe.data.wrappedkey", "true");
if (!Decrypt_Data->Decrypt_FBE_DE()) {
LOGERR("Unable to decrypt FBE device\n");
}
}
}
} else {
LOGINFO("Failed to mount data after metadata decrypt\n");
}
} else {
LOGINFO("Unable to decrypt metadata encryption\n");
}
#else
LOGERR("Metadata FBE decrypt support not present in this TWRP\n");
#endif
}
if (Decrypt_Data->Is_FBE)
{
if (DataManager::GetIntValue (TW_CRYPTO_PWTYPE) == 0)
{
if (Decrypt_Device ("!") == 0)
{
gui_msg("decrypt_success=Successfully decrypted with default password.");
DataManager::SetValue (TW_IS_ENCRYPTED, 0);
}
else
{
gui_err("unable_to_decrypt=Unable to decrypt with default password.");
}
}
} else {
LOGINFO("FBE setup failed. Trying FDE...");
Set_FDE_Encrypt_Status();
int password_type = cryptfs_get_password_type ();
if (password_type == CRYPT_TYPE_DEFAULT)
{
LOGINFO("Device is encrypted with the default password, attempting to decrypt.\n");
if (Decrypt_Device ("default_password") == 0)
{
gui_msg("decrypt_success=Successfully decrypted with default password.");
DataManager::SetValue (TW_IS_ENCRYPTED, 0);
}
else
{
gui_err("unable_to_decrypt=Unable to decrypt with default password.");
}
}
else
{
DataManager::SetValue ("TW_CRYPTO_TYPE", password_type);
DataManager::SetValue("tw_crypto_pwtype_0", password_type);
}
}
}
if (Decrypt_Data && (!Decrypt_Data->Is_Encrypted || Decrypt_Data->Is_Decrypted) && Decrypt_Data->Mount (false)) {
Decrypt_Adopted ();
}
#endif
}
void
TWPartitionManager::Setup_Settings_Storage_Partition (TWPartition * Part)
{
DataManager::SetValue ("tw_settings_path", Part->Storage_Path);
DataManager::SetValue ("tw_storage_path", Part->Storage_Path);
LOGINFO ("Settings storage is '%s'\n", Part->Storage_Path.c_str ());
}
void
TWPartitionManager::Setup_Android_Secure_Location (TWPartition * Part)
{
if (Part->Has_Android_Secure)
Part->Setup_AndSec ();
else if (!datamedia)
Part->Setup_AndSec ();
}
void
TWPartitionManager::Output_Partition_Logging (void)
{
std::vector < TWPartition * >::iterator iter;
printf ("\n\nPartition Logs:\n");
for (iter = Partitions.begin (); iter != Partitions.end (); iter++)
Output_Partition ((*iter));
}
void
TWPartitionManager::Output_Partition (TWPartition * Part)
{
unsigned long long mb = 1048576;
printf ("%s | %s | Size: %.1lfMB", Part->Mount_Point.c_str (),
Part->Actual_Block_Device.c_str (), (double)Part->Size / mb);
if (Part->Can_Be_Mounted)
{
printf (" Used: %.1lfMB Free: %.1lfMB Backup Size: %.1lfMB",
(double)Part->Used / mb, (double)Part->Free / mb,
(double)Part->Backup_Size / mb);
}
printf ("\n Flags: ");
if (Part->Can_Be_Mounted)
printf ("Can_Be_Mounted ");
if (Part->Can_Be_Wiped)
printf ("Can_Be_Wiped ");
if (Part->Use_Rm_Rf)
printf ("Use_Rm_Rf ");
if (Part->Can_Be_Backed_Up)
printf ("Can_Be_Backed_Up ");
if (Part->Wipe_During_Factory_Reset)
printf ("Wipe_During_Factory_Reset ");
if (Part->Wipe_Available_in_GUI)
printf ("Wipe_Available_in_GUI ");
if (Part->Is_SubPartition)
printf ("Is_SubPartition ");
if (Part->Has_SubPartition)
printf ("Has_SubPartition ");
if (Part->Removable)
printf ("Removable ");
if (Part->Is_Present)
printf ("IsPresent ");
if (Part->Can_Be_Encrypted)
printf ("Can_Be_Encrypted ");
if (Part->Is_Encrypted)
printf ("Is_Encrypted ");
if (Part->Is_Decrypted)
printf ("Is_Decrypted ");
if (Part->Has_Data_Media)
printf ("Has_Data_Media ");
if (Part->Can_Encrypt_Backup)
printf ("Can_Encrypt_Backup ");
if (Part->Use_Userdata_Encryption)
printf ("Use_Userdata_Encryption ");
if (Part->Has_Android_Secure)
printf ("Has_Android_Secure ");
if (Part->Is_Storage)
printf ("Is_Storage ");
if (Part->Is_Settings_Storage)
printf ("Is_Settings_Storage ");
if (Part->Ignore_Blkid)
printf ("Ignore_Blkid ");
if (Part->Mount_To_Decrypt)
printf ("Mount_To_Decrypt ");
if (Part->Can_Flash_Img)
printf ("Can_Flash_Img ");
if (Part->Is_Adopted_Storage)
printf ("Is_Adopted_Storage ");
if (Part->SlotSelect)
printf ("SlotSelect ");
if (Part->Mount_Read_Only)
printf ("Mount_Read_Only ");
if (Part->Is_Super)
printf("Is_Super ");
printf ("\n");
if (!Part->SubPartition_Of.empty ())
printf (" SubPartition_Of: %s\n", Part->SubPartition_Of.c_str ());
if (!Part->Symlink_Path.empty ())
printf (" Symlink_Path: %s\n", Part->Symlink_Path.c_str ());
if (!Part->Symlink_Mount_Point.empty ())
printf (" Symlink_Mount_Point: %s\n",
Part->Symlink_Mount_Point.c_str ());
if (!Part->Primary_Block_Device.empty ())
printf (" Primary_Block_Device: %s\n",
Part->Primary_Block_Device.c_str ());
if (!Part->Alternate_Block_Device.empty ())
printf (" Alternate_Block_Device: %s\n",
Part->Alternate_Block_Device.c_str ());
if (!Part->Decrypted_Block_Device.empty ())
printf (" Decrypted_Block_Device: %s\n",
Part->Decrypted_Block_Device.c_str ());
if (!Part->Crypto_Key_Location.empty ())
printf (" Crypto_Key_Location: %s\n",
Part->Crypto_Key_Location.c_str ());
if (Part->Length != 0)
printf (" Length: %i\n", Part->Length);
if (!Part->Display_Name.empty ())
printf (" Display_Name: %s\n", Part->Display_Name.c_str ());
if (!Part->Storage_Name.empty ())
printf (" Storage_Name: %s\n", Part->Storage_Name.c_str ());
if (!Part->Backup_Path.empty ())
printf (" Backup_Path: %s\n", Part->Backup_Path.c_str ());
if (!Part->Backup_Name.empty ())
printf (" Backup_Name: %s\n", Part->Backup_Name.c_str ());
if (!Part->Backup_Display_Name.empty ())
printf (" Backup_Display_Name: %s\n",
Part->Backup_Display_Name.c_str ());
if (!Part->Backup_FileName.empty ())
printf (" Backup_FileName: %s\n", Part->Backup_FileName.c_str ());
if (!Part->Storage_Path.empty ())
printf (" Storage_Path: %s\n", Part->Storage_Path.c_str ());
if (!Part->Current_File_System.empty ())
printf (" Current_File_System: %s\n",
Part->Current_File_System.c_str ());
if (!Part->Fstab_File_System.empty ())
printf (" Fstab_File_System: %s\n", Part->Fstab_File_System.c_str ());
if (Part->Format_Block_Size != 0)
printf (" Format_Block_Size: %lu\n", Part->Format_Block_Size);
if (!Part->MTD_Name.empty ())
printf (" MTD_Name: %s\n", Part->MTD_Name.c_str ());
printf (" Backup_Method: %s\n", Part->Backup_Method_By_Name ().c_str ());
if (Part->Mount_Flags || !Part->Mount_Options.empty ())
printf (" Mount_Flags: %i, Mount_Options: %s\n", Part->Mount_Flags,
Part->Mount_Options.c_str ());
if (Part->MTP_Storage_ID)
printf (" MTP_Storage_ID: %i\n", Part->MTP_Storage_ID);
if (!Part->Key_Directory.empty())
printf(" Metadata Key Directory: %s\n", Part->Key_Directory.c_str());
printf ("\n");
}
int
TWPartitionManager::Mount_By_Path (string Path, bool Display_Error)
{
std::vector < TWPartition * >::iterator iter;
int ret = false;
bool found = false;
string Local_Path = TWFunc::Get_Root_Path (Path);
if (Local_Path == "/tmp" || Local_Path == "/")
return true;
// Iterate through all partitions
for (iter = Partitions.begin (); iter != Partitions.end (); iter++)
{
if ((*iter)->Mount_Point == Local_Path
|| (!(*iter)->Symlink_Mount_Point.empty ()
&& (*iter)->Symlink_Mount_Point == Local_Path))
{
ret = (*iter)->Mount (Display_Error);
found = true;
}
else if ((*iter)->Is_SubPartition
&& (*iter)->SubPartition_Of == Local_Path)
{
(*iter)->Mount (Display_Error);
}
}
if (found)
{
return ret;
}
else if (Display_Error)
{
gui_msg (Msg
(msg::kError,
"unable_find_part_path=Unable to find partition for path '{1}'")
(Local_Path));
}
else
{
LOGINFO ("Mount: Unable to find partition for path '%s'\n",
Local_Path.c_str ());
}
return false;
}
int
TWPartitionManager::UnMount_By_Path (string Path, bool Display_Error)
{
std::vector < TWPartition * >::iterator iter;
int ret = false;
bool found = false;
string Local_Path = TWFunc::Get_Root_Path (Path);
// Iterate through all partitions
for (iter = Partitions.begin (); iter != Partitions.end (); iter++)
{
if ((*iter)->Mount_Point == Local_Path
|| (!(*iter)->Symlink_Mount_Point.empty ()
&& (*iter)->Symlink_Mount_Point == Local_Path))
{
ret = (*iter)->UnMount (Display_Error);
found = true;
}
else if ((*iter)->Is_SubPartition
&& (*iter)->SubPartition_Of == Local_Path)
{
(*iter)->UnMount (Display_Error);
}
}
if (found)
{
return ret;
}
else if (Display_Error)
{
gui_msg (Msg
(msg::kError,
"unable_find_part_path=Unable to find partition for path '{1}'")
(Local_Path));
}
else
{
LOGINFO ("UnMount: Unable to find partition for path '%s'\n",
Local_Path.c_str ());
}
return false;
}
int
TWPartitionManager::Is_Mounted_By_Path (string Path)
{
TWPartition *Part = Find_Partition_By_Path (Path);
if (Part)
return Part->Is_Mounted ();
else
LOGINFO ("Is_Mounted: Unable to find partition for path '%s'\n",
Path.c_str ());
return false;
}
int
TWPartitionManager::Mount_Current_Storage (bool Display_Error)
{
string current_storage_path = DataManager::GetCurrentStoragePath ();
if (Mount_By_Path (current_storage_path, Display_Error))
{
TWPartition *FreeStorage =
Find_Partition_By_Path (current_storage_path);
if (FreeStorage)
DataManager::SetValue (TW_STORAGE_FREE_SIZE,
(int) (FreeStorage->Free / 1048576LLU));
return true;
}
return false;
}
int
TWPartitionManager::Mount_Settings_Storage (bool Display_Error)
{
return Mount_By_Path (DataManager::GetSettingsStoragePath (),
Display_Error);
}
TWPartition *
TWPartitionManager::Find_Partition_By_Path (const string & Path)
{
std::vector < TWPartition * >::iterator iter;
string Local_Path = TWFunc::Get_Root_Path (Path);
if (Local_Path == "/system")
Local_Path = Get_Android_Root_Path();
for (iter = Partitions.begin (); iter != Partitions.end (); iter++)
{
if ((*iter)->Mount_Point == Local_Path
|| (!(*iter)->Symlink_Mount_Point.empty ()
&& (*iter)->Symlink_Mount_Point == Local_Path))
return (*iter);
}
return NULL;
}
TWPartition *
TWPartitionManager::
Find_Partition_By_Block_Device (const string & Block_Device)
{
std::vector < TWPartition * >::iterator iter;
for (iter = Partitions.begin (); iter != Partitions.end (); iter++)
{
if ((*iter)->Primary_Block_Device == Block_Device
|| (!(*iter)->Actual_Block_Device.empty ()
&& (*iter)->Actual_Block_Device == Block_Device))
return (*iter);
}
return NULL;
}
int TWPartitionManager::Check_Backup_Name(const std::string& Backup_Name, bool Display_Error, bool Must_Be_Unique) {
// Check the backup name to ensure that it is the correct size and contains only valid characters
// and that a backup with that name doesn't already exist
char backup_name[MAX_BACKUP_NAME_LEN];
char backup_loc[255], tw_image_dir[255];
int copy_size;
int index, cur_char;
string Backup_Loc;
copy_size = Backup_Name.size ();
// Check size
if (copy_size > MAX_BACKUP_NAME_LEN)
{
if (Display_Error)
gui_err ("backup_name_len=Backup name is too long.");
return -2;
}
// Check each character
strncpy (backup_name, Backup_Name.c_str (), copy_size);
if (copy_size == 1 && strncmp (backup_name, "0", 1) == 0)
return 0; // A "0" (zero) means to use the current timestamp for the backup name
for (index = 0; index < copy_size; index++)
{
cur_char = (int) backup_name[index];
if (cur_char == 32 || (cur_char >= 48 && cur_char <= 57)
|| (cur_char >= 65 && cur_char <= 91) || cur_char == 93
|| cur_char == 95 || (cur_char >= 97 && cur_char <= 123)
|| cur_char == 125 || cur_char == 45 || cur_char == 46)
{
// These are valid characters
// Numbers
// Upper case letters
// Lower case letters
// Space
// and -_.{}[]
}
else
{
if (Display_Error)
gui_msg (Msg
(msg::kError,
"backup_name_invalid=Backup name '{1}' contains invalid character: '{1}'")
(Backup_Name) ((char) cur_char));
return -3;
}
}
if (Must_Be_Unique) {
// Check to make sure that a backup with this name doesn't already exist
DataManager::GetValue(TW_BACKUPS_FOLDER_VAR, Backup_Loc);
strcpy(backup_loc, Backup_Loc.c_str());
sprintf(tw_image_dir,"%s/%s", backup_loc, Backup_Name.c_str());
if (TWFunc::Path_Exists(tw_image_dir)) {
if (Display_Error)
gui_err("backup_name_exists=A backup with that name already exists!");
return -4;
}
// Backup is unique
}
// No problems found, return 0
return 0;
}
bool
TWPartitionManager::Backup_Partition (PartitionSettings * part_settings)
{
time_t start, stop;
int use_compression;
string backup_log = part_settings->Backup_Folder + "/recovery.log";
if (part_settings->Part == NULL)
return true;
DataManager::GetValue (TW_USE_COMPRESSION_VAR, use_compression);
TWFunc::SetPerformanceMode (true);
time (&start);
if (part_settings->Part->Backup (part_settings, &tar_fork_pid))
{
sync ();
sync ();
string Full_Filename =
part_settings->Backup_Folder + "/" +
part_settings->Part->Backup_FileName;
if (!part_settings->adbbackup && part_settings->generate_digest)
{
if (!twrpDigestDriver::Make_Digest (Full_Filename))
goto backup_error;
int check_digest_after_backup = 0;
DataManager::GetValue(TW_CHECK_DIGEST_AFTER_BACKUP, check_digest_after_backup);
if (check_digest_after_backup > 0 && !twrpDigestDriver::Check_Digest(Full_Filename)) {
goto backup_error;
}
}
if (part_settings->Part->Has_SubPartition)
{
std::vector < TWPartition * >::iterator subpart;
TWPartition *parentPart = part_settings->Part;
for (subpart = Partitions.begin (); subpart != Partitions.end ();
subpart++)
{
if ((*subpart)->Can_Be_Backed_Up && (*subpart)->Is_SubPartition
&& (*subpart)->SubPartition_Of == parentPart->Mount_Point)
{
part_settings->Part = *subpart;
if (!(*subpart)->Backup (part_settings, &tar_fork_pid))
{
goto backup_error;
}
sync ();
sync ();
string Full_Filename = part_settings->Backup_Folder + "/" + part_settings->Part->Backup_FileName;
if (!part_settings->adbbackup
&& part_settings->generate_digest)
{
if (!twrpDigestDriver::Make_Digest (Full_Filename))
{
goto backup_error;
}
int check_digest_after_backup = 0;
DataManager::GetValue(TW_CHECK_DIGEST_AFTER_BACKUP, check_digest_after_backup);
if (check_digest_after_backup > 0 && !twrpDigestDriver::Check_Digest(Full_Filename)) {
goto backup_error;
}
}
}
}
}
time (&stop);