1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/*
Copyright 2014 TeamWin
This file is part of TWRP/TeamWin 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/>.
*/
#ifndef __TWRP_Partition_Manager
#define __TWRP_Partition_Manager
#include <vector>
#include <string>
#include "twrpDU.hpp"
#include "tw_atomic.hpp"
#define MAX_FSTAB_LINE_LENGTH 2048
using namespace std;
struct PartitionList {
std::string Display_Name;
std::string Mount_Point;
unsigned int selected;
};
// Partition class
class TWPartition
{
public:
enum Backup_Method_enum {
NONE = 0,
FILES = 1,
DD = 2,
FLASH_UTILS = 3,
};
public:
TWPartition();
virtual ~TWPartition();
public:
bool Is_Mounted(); // Checks mount to see if the partition is currently mounted
bool Mount(bool Display_Error); // Mounts the partition if it is not mounted
bool UnMount(bool Display_Error); // Unmounts the partition if it is mounted
bool Wipe(string New_File_System); // Wipes the partition
bool Wipe(); // Wipes the partition
bool Wipe_AndSec(); // Wipes android secure
bool Can_Repair(); // Checks to see if we have everything needed to be able to repair the current file system
uint64_t Get_Max_FileSize(); //get partition maxFileSie
bool Repair(); // Repairs the current file system
bool Backup(string backup_folder, const unsigned long long *overall_size, const unsigned long long *other_backups_size, pid_t &tar_fork_pid); // Backs up the partition to the folder specified
bool Check_MD5(string restore_folder); // Checks MD5 of a backup
bool Restore(string restore_folder, const unsigned long long *total_restore_size, unsigned long long *already_restored_size); // Restores the partition using the backup folder provided
unsigned long long Get_Restore_Size(string restore_folder); // Returns the overall restore size of the backup
string Backup_Method_By_Name(); // Returns a string of the backup method for human readable output
bool Decrypt(string Password); // Decrypts the partition, return 0 for failure and -1 for success
bool Wipe_Encryption(); // Ignores wipe commands for /data/media devices and formats the original block device
void Check_FS_Type(); // Checks the fs type using blkid, does not do anything on MTD / yaffs2 because this crashes on some devices
bool Update_Size(bool Display_Error); // Updates size information
void Recreate_Media_Folder(); // Recreates the /data/media folder
bool Flash_Image(string Filename); // Flashes an image to the partition
public:
string Current_File_System; // Current file system
string Actual_Block_Device; // Actual block device (one of primary, alternate, or decrypted)
string MTD_Name; // Name of the partition for MTD devices
bool Is_Present; // Indicates if the partition is currently present as a block device
string Crypto_Key_Location; // Location of the crypto key used for decrypting encrypted data partitions
unsigned int MTP_Storage_ID;
protected:
bool Has_Data_Media; // Indicates presence of /data/media, may affect wiping and backup methods
void Setup_Data_Media(); // Sets up a partition as a /data/media emulated storage partition
private:
bool Process_Fstab_Line(string Line, bool Display_Error); // Processes a fstab line
void Find_Actual_Block_Device(); // Determines the correct block device and stores it in Actual_Block_Device
bool Process_Flags(string Flags, bool Display_Error); // Process custom fstab flags
bool Process_FS_Flags(string& Options, int Flags); // Process standard fstab fs flags
bool Is_File_System(string File_System); // Checks to see if the file system given is considered a file system
bool Is_Image(string File_System); // Checks to see if the file system given is considered an image
void Setup_File_System(bool Display_Error); // Sets defaults for a file system partition
void Setup_Image(bool Display_Error); // Sets defaults for an image partition
void Setup_AndSec(void); // Sets up .android_secure settings
void Find_Real_Block_Device(string& Block_Device, bool Display_Error); // Checks the block device given and follows symlinks until it gets to the real block device
bool Find_Partition_Size(); // Finds the partition size from /proc/partitions
unsigned long long Get_Size_Via_du(string Path, bool Display_Error); // Uses du to get sizes
bool Wipe_EXT23(string File_System); // Formats as ext3 or ext2
bool Wipe_EXT4(); // Formats using ext4, uses make_ext4fs when present
bool Wipe_FAT(); // Formats as FAT if mkdosfs exits otherwise rm -rf wipe
bool Wipe_EXFAT(); // Formats as EXFAT
bool Wipe_MTD(); // Formats as yaffs2 for MTD memory types
bool Wipe_RMRF(); // Uses rm -rf to wipe
bool Wipe_F2FS(); // Uses mkfs.f2fs to wipe
bool Wipe_Data_Without_Wiping_Media(); // Uses rm -rf to wipe but does not wipe /data/media
bool Backup_Tar(string backup_folder, const unsigned long long *overall_size, const unsigned long long *other_backups_size, pid_t &tar_fork_pid); // Backs up using tar for file systems
bool Backup_DD(string backup_folder); // Backs up using dd for emmc memory types
bool Backup_Dump_Image(string backup_folder); // Backs up using dump_image for MTD memory types
string Get_Restore_File_System(string restore_folder); // Returns the file system that was in place at the time of the backup
bool Restore_Tar(string restore_folder, string Restore_File_System, const unsigned long long *total_restore_size, unsigned long long *already_restored_size); // Restore using tar for file systems
bool Restore_Image(string restore_folder, const unsigned long long *total_restore_size, unsigned long long *already_restored_size, string Restore_File_System); // Restore using dd for images
bool Get_Size_Via_statfs(bool Display_Error); // Get Partition size, used, and free space using statfs
bool Get_Size_Via_df(bool Display_Error); // Get Partition size, used, and free space using df command
bool Make_Dir(string Path, bool Display_Error); // Creates a directory if it doesn't already exist
bool Find_MTD_Block_Device(string MTD_Name); // Finds the mtd block device based on the name from the fstab
void Recreate_AndSec_Folder(void); // Recreates the .android_secure folder
void Mount_Storage_Retry(void); // Tries multiple times with a half second delay to mount a device in case storage is slow to mount
bool Flash_Image_DD(string Filename); // Flashes an image to the partition using dd
bool Flash_Image_FI(string Filename); // Flashes an image to the partition using flash_image for mtd nand
private:
bool Can_Be_Mounted; // Indicates that the partition can be mounted
bool Can_Be_Wiped; // Indicates that the partition can be wiped
bool Can_Be_Backed_Up; // Indicates that the partition will show up in the backup list
bool Use_Rm_Rf; // Indicates that the partition will always be formatted w/ "rm -rf *"
bool Wipe_During_Factory_Reset; // Indicates that this partition is wiped during a factory reset
bool Wipe_Available_in_GUI; // Inidcates that the wipe can be user initiated in the GUI system
bool Is_SubPartition; // Indicates that this partition is a sub-partition of another partition (e.g. datadata is a sub-partition of data)
bool Has_SubPartition; // Indicates that this partition has a sub-partition
string SubPartition_Of; // Indicates which partition is the parent partition of this partition (e.g. /data is the parent partition of /datadata)
string Symlink_Path; // Symlink path (e.g. /data/media)
string Symlink_Mount_Point; // /sdcard could be the symlink mount point for /data/media
string Mount_Point; // Mount point for this partition (e.g. /system or /data)
string Backup_Path; // Path for backup
string Primary_Block_Device; // Block device (e.g. /dev/block/mmcblk1p1)
string Alternate_Block_Device; // Alternate block device (e.g. /dev/block/mmcblk1)
string Decrypted_Block_Device; // Decrypted block device available after decryption
bool Removable; // Indicates if this partition is removable -- affects how often we check overall size, if present, etc.
int Length; // Used by make_ext4fs to leave free space at the end of the partition block for things like a crypto footer
unsigned long long Size; // Overall size of the partition
unsigned long long Used; // Overall used space
unsigned long long Free; // Overall free space
unsigned long long Backup_Size; // Backup size -- may be different than used space especially when /data/media is present
unsigned long long Restore_Size; // Restore size of the current restore operation
bool Can_Be_Encrypted; // This partition might be encrypted, affects error handling, can only be true if crypto support is compiled in
bool Is_Encrypted; // This partition is thought to be encrypted -- it wouldn't mount for some reason, only avialble with crypto support
bool Is_Decrypted; // This partition has successfully been decrypted
bool Mount_To_Decrypt; // Mount this partition during decrypt (/vendor, /firmware, etc in case we need proprietary libs or firmware files)
string Display_Name; // Display name for the GUI
string Backup_Name; // Backup name -- used for backup filenames
string Backup_Display_Name; // Name displayed in the partition list for backup selection
string Storage_Name; // Name displayed in the partition list for storage selection
string Backup_FileName; // Actual backup filename
Backup_Method_enum Backup_Method; // Method used for backup
bool Can_Encrypt_Backup; // Indicates if this item can be encrypted during backup
bool Use_Userdata_Encryption; // Indicates if we will use userdata encryption splitting on an encrypted backup
bool Has_Android_Secure; // Indicates the presence of .android_secure on this partition
bool Is_Storage; // Indicates if this partition is used for storage for backup, restore, and installing zips
bool Is_Settings_Storage; // Indicates that this storage partition is the location of the .twrps settings file and the location that is used for custom themes
string Storage_Path; // Indicates the path to the storage -- root indicates mount point, media/ indicates e.g. /data/media
string Fstab_File_System; // File system from the recovery.fstab
int Mount_Flags; // File system flags from recovery.fstab
string Mount_Options; // File system options from recovery.fstab
int Format_Block_Size; // Block size for formatting
bool Ignore_Blkid; // Ignore blkid results due to superblocks lying to us on certain devices / partitions
bool Retain_Layout_Version; // Retains the .layout_version file during a wipe (needed on devices like Sony Xperia T where /data and /data/media are separate partitions)
bool Can_Flash_Img; // Indicates if this partition can have images flashed to it via the GUI
friend class TWPartitionManager;
friend class DataManager;
friend class GUIPartitionList;
friend class GUIAction;
};
class TWPartitionManager
{
public:
TWPartitionManager(); // Constructor for TWRPartionManager
~TWPartitionManager() {}
public:
int Process_Fstab(string Fstab_Filename, bool Display_Error); // Parses the fstab and populates the partitions
int Write_Fstab(); // Creates /etc/fstab file that's used by the command line for mount commands
void Output_Partition_Logging(); // Outputs partition information to the log
int Mount_By_Path(string Path, bool Display_Error); // Mounts partition based on path (e.g. /system)
int UnMount_By_Path(string Path, bool Display_Error); // Unmounts partition based on path
int Is_Mounted_By_Path(string Path); // Checks if partition is mounted based on path
int Mount_Current_Storage(bool Display_Error); // Mounts the current storage location
int Mount_Settings_Storage(bool Display_Error); // Mounts the settings file storage location (usually internal)
TWPartition* Find_Partition_By_Path(string Path); // Returns a pointer to a partition based on path
int Check_Backup_Name(bool Display_Error); // Checks the current backup name to ensure that it is valid
int Run_Backup(); // Initiates a backup in the current storage
int Run_Restore(string Restore_Name); // Restores a backup
void Set_Restore_Files(string Restore_Name); // Used to gather a list of available backup partitions for the user to select for a restore
int Wipe_By_Path(string Path); // Wipes a partition based on path
int Wipe_By_Path(string Path, string New_File_System); // Wipes a partition based on path
int Factory_Reset(); // Performs a factory reset
int Wipe_Dalvik_Cache(); // Wipes dalvik cache
int Wipe_Rotate_Data(); // Wipes rotation data --
int Wipe_Battery_Stats(); // Wipe battery stats -- /data/system/batterystats.bin
int Wipe_Android_Secure(); // Wipes android secure
int Format_Data(); // Really formats data on /data/media devices -- also removes encryption
int Wipe_Media_From_Data(); // Removes and recreates the media folder on /data/media devices
int Repair_By_Path(string Path, bool Display_Error); // Repairs a partition based on path
void Update_System_Details(); // Updates fstab, file systems, sizes, etc.
int Decrypt_Device(string Password); // Attempt to decrypt any encrypted partitions
int usb_storage_enable(void); // Enable USB storage mode
int usb_storage_disable(void); // Disable USB storage mode
void Mount_All_Storage(void); // Mounts all storage locations
void UnMount_Main_Partitions(void); // Unmounts system and data if not data/media and boot if boot is mountable
int Partition_SDCard(void); // Repartitions the sdcard
TWPartition *Get_Default_Storage_Partition(); // Returns a pointer to a default storage partition
int Cancel_Backup(); // Signals partition backup to cancel
int Fix_Permissions();
void Get_Partition_List(string ListType, std::vector<PartitionList> *Partition_List);
int Fstab_Processed(); // Indicates if the fstab has been processed or not
void Output_Storage_Fstab(); // Creates a /cache/recovery/storage.fstab file with a list of all potential storage locations for app use
bool Enable_MTP(); // Enables MTP
void Add_All_MTP_Storage(); // Adds all storage objects for MTP
bool Disable_MTP(); // Disables MTP
bool Add_MTP_Storage(string Mount_Point); // Adds or removes an MTP Storage partition
bool Add_MTP_Storage(unsigned int Storage_ID); // Adds or removes an MTP Storage partition
bool Remove_MTP_Storage(string Mount_Point); // Adds or removes an MTP Storage partition
bool Remove_MTP_Storage(unsigned int Storage_ID); // Adds or removes an MTP Storage partition
bool Flash_Image(string Filename); // Flashes an image to a selected partition from the partition list
TWAtomicInt stop_backup;
private:
void Setup_Settings_Storage_Partition(TWPartition* Part); // Sets up settings storage
void Setup_Android_Secure_Location(TWPartition* Part); // Sets up .android_secure if needed
bool Make_MD5(bool generate_md5, string Backup_Folder, string Backup_Filename); // Generates an MD5 after a backup is made
bool Backup_Partition(TWPartition* Part, string Backup_Folder, bool generate_md5, unsigned long long* img_bytes_remaining, unsigned long long* file_bytes_remaining, unsigned long *img_time, unsigned long *file_time, unsigned long long *img_bytes, unsigned long long *file_bytes);
bool Restore_Partition(TWPartition* Part, string Restore_Name, int partition_count, const unsigned long long *total_restore_size, unsigned long long *already_restored_size);
void Output_Partition(TWPartition* Part);
TWPartition* Find_Partition_By_MTP_Storage_ID(unsigned int Storage_ID); // Returns a pointer to a partition based on MTP Storage ID
bool Add_Remove_MTP_Storage(TWPartition* Part, int message_type); // Adds or removes an MTP Storage partition
TWPartition* Find_Next_Storage(string Path, string Exclude);
int Open_Lun_File(string Partition_Path, string Lun_File);
pid_t mtppid;
bool mtp_was_enabled;
int mtp_write_fd;
pid_t tar_fork_pid;
private:
std::vector<TWPartition*> Partitions; // Vector list of all partitions
};
extern TWPartitionManager PartitionManager;
#endif // __TWRP_Partition_Manager
|
