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diff --git a/partitions.hpp b/partitions.hpp new file mode 100644 index 000000000..e91f7dd11 --- /dev/null +++ b/partitions.hpp @@ -0,0 +1,141 @@ +/* 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 "data.hpp" +#include <vector> +#include <string> +#include <map> + +// Partition class +class TWPartition +{ +public: + enum Backup_Method_enum { + NONE = 0, + FILES = 1, + DD = 2, + FLASH_UTILS = 3, + }; + +public: + TWPartition(); + virtual ~TWPartition(); + +public: + virtual bool Is_Mounted(); // Checks mount to see if the partition is currently mounted + virtual bool Mount(bool Display_Error); // Mounts the partition if it is not mounted + virtual bool UnMount(bool Display_Error); // Unmounts the partition if it is mounted + virtual bool Wipe(); // Wipes the partition + virtual bool Backup(string backup_folder); // Backs up the partition to the folder specified + virtual bool Restore(string restore_folder); // Restores the partition using the backup folder provided + static string Backup_Method_By_Name(); // Returns a string of the backup method for human readable output + virtual bool Decrypt(string Password); // Decrypts the partition, return 0 for failure and -1 for success + virtual 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 + +protected: + bool Process_Fstab_Line(string Line); // Processes a fstab line + +protected: + bool Can_Be_Mounted; // Indicates that the partition can be mounted + bool Can_Be_Wiped; // Indicates that the partition can be wiped + 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) + 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 Block_Device; // Block device (e.g. /dev/block/mmcblk1p1) + string Alternate_Block_Device; // Alternate block device (e.g. /dev/block/mmcblk1) + 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 Decrypted_Block_Device; // Decrypted block device available after decryption + string Display_Name; // Display name for the GUI + string Backup_Name; // Backup name -- used for backup filenames + Backup_Method_enum Backup_Method; // Method used for backup + bool Has_Data_Media // Indicates presence of /data/media, may affect wiping and backup methods + bool Is_Storage // Indicates if this partition is used for storage for backup, restore, and installing zips + string Storage_Path // Indicates the path to the storage -- root indicates mount point, media/ indicates e.g. /data/media + string Current_File_System // Current file system + string Fstab_File_System // File system from the recovery.fstab + int Format_Block_Size // Block size for formatting + +private: + bool Wipe_EXT23(); // Formats as ext3 or ext2 + bool Wipe_EXT4(); // Formats using ext4, uses make_ext4fs when present + bool Wipe_FAT(); // Formats as FAT except that mkdosfs from busybox usually fails so oftentimes this is actually a rm -rf wipe + bool Wipe_YAFFS2(); // Formats as yaffs2 for MTD memory types + bool Wipe_RMRF(); // Uses rm -rf 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); // 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 + +friend class TWPartitionManager; +} + +class TWPartitionManager +{ +public: + TWPartitionManager(); + virtual ~TWPartitionManager(); + +public: + virtual int Process_Fstab(string Fstab_Filename, bool Display_Error); // Parses the fstab and populates the partitions + virtual int Mount_By_Path(string Path, bool Display_Error); // Mounts partition based on path (e.g. /system) + virtual int Mount_By_Block(string Block, bool Display_Error); // Mounts partition based on block device (e.g. /dev/block/mmcblk1p1) + virtual int Mount_By_Name(string Name, bool Display_Error); // Mounts partition based on display name (e.g. System) + virtual int UnMount_By_Path(string Path, bool Display_Error); // Unmounts partition based on path + virtual int UnMount_By_Block(string Block, bool Display_Error); // Unmounts partition based on block device + virtual int UnMount_By_Name(string Name, bool Display_Error); // Unmounts partition based on display name + virtual int Is_Mounted_By_Path(string Path); // Checks if partition is mounted based on path + virtual int Is_Mounted_By_Block(string Block); // Checks if partition is mounted based on block device + virtual int Is_Mounted_By_Name(string Name); // Checks if partition is mounted based on display name + static *Partition Find_Partition_By_Path(string Path); // Returns a pointer to a partition based on path + static *Partition Find_Partition_By_Block(string Block); // Returns a pointer to a partition based on block device + virtual int Run_Backup(string Backup_Name); // Initiates a backup in the current storage + virtual 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 + virtual int Wipe_By_Path(string Path); // Wipes a partition based on path + virtual int Wipe_By_Block(string Block); // Wipes a partition based on block device + virtual int Wipe_By_Name(string Name); // Wipes a partition based on display name + void Refresh_Sizes(); // Refreshes size data of partitions + +private: + std::vector<TWPartition*> Partitions; +} + +#endif // __TWRP_Partition_Manager
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