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Diffstat (limited to 'partitions.hpp')
| -rw-r--r-- | partitions.hpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/partitions.hpp b/partitions.hpp new file mode 100644 index 000000000..e46dcce28 --- /dev/null +++ b/partitions.hpp @@ -0,0 +1,228 @@ +/* Partition Management classes for TWRP + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * The code was written from scratch by Dees_Troy dees_troy at + * yahoo + * + * Copyright (c) 2012 + */ + +#ifndef __TWRP_Partition_Manager +#define __TWRP_Partition_Manager + +#include <vector> +#include <string> + +#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 Backup(string backup_folder); // Backs up the partition to the folder specified + bool Check_MD5(string restore_folder); // Checks MD5 of a backup + bool Restore(string restore_folder); // Restores the partition using the backup folder provided + 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 + +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 + +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 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); // 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 + bool Restore_Tar(string restore_folder, string Restore_File_System); // Restore using tar for file systems + bool Restore_DD(string restore_folder); // Restore using dd for emmc memory types + bool Restore_Flash_Image(string restore_folder); // Restore using flash_image for MTD memory types + 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 + +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. + bool Is_Present; // Indicates if the partition is currently present as a block device + 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 + 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 + 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_Data_Media; // Indicates presence of /data/media, may affect wiping and backup methods + 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 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) +#ifdef TW_INCLUDE_CRYPTO_SAMSUNG + string EcryptFS_Password; // Have to store the encryption password to remount +#endif + +friend class TWPartitionManager; +friend class DataManager; +friend class GUIPartitionList; +}; + +class TWPartitionManager +{ +public: + TWPartitionManager() {} + ~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 Mount_By_Block(string Block, bool Display_Error); // Mounts partition based on block device (e.g. /dev/block/mmcblk1p1) + int Mount_By_Name(string Name, bool Display_Error); // Mounts partition based on display name (e.g. System) + int UnMount_By_Path(string Path, bool Display_Error); // Unmounts partition based on path + int UnMount_By_Block(string Block, bool Display_Error); // Unmounts partition based on block device + int UnMount_By_Name(string Name, bool Display_Error); // Unmounts partition based on display name + int Is_Mounted_By_Path(string Path); // Checks if partition is mounted based on path + int Is_Mounted_By_Block(string Block); // Checks if partition is mounted based on block device + int Is_Mounted_By_Name(string Name); // Checks if partition is mounted based on display name + 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 + TWPartition* Find_Partition_By_Block(string Block); // Returns a pointer to a partition based on block device + TWPartition* Find_Partition_By_Name(string Block); // Returns a pointer to a partition based on name + 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_Block(string Block); // Wipes a partition based on block device + int Wipe_By_Name(string Name); // Wipes a partition based on display name + 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 + void Refresh_Sizes(); // Refreshes size data of partitions + 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 + + 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 + +private: + 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); + void Output_Partition(TWPartition* Part); + int Open_Lun_File(string Partition_Path, string Lun_File); + +private: + std::vector<TWPartition*> Partitions; // Vector list of all partitions +}; + +extern TWPartitionManager PartitionManager; + +#endif // __TWRP_Partition_Manager |