| |
| /* |
| |
| /usr/src/ext2ed/ext2ed.h |
| |
| A part of the extended file system 2 disk editor. |
| |
| -------------------------------------- |
| Include file for the ext2 disk editor. |
| -------------------------------------- |
| |
| This file contains declarations which are needed by all the files in ext2ed. |
| |
| First written on: April 9 1995 |
| |
| Copyright (C) 1995 Gadi Oxman |
| |
| */ |
| |
| #ifndef EXT2ED_EDITOR_H |
| #define EXT2ED_EDITOR_H |
| |
| /* |
| |
| ----------------------- |
| User definable options |
| ----------------------- |
| |
| */ |
| |
| #define DEBUG /* Activate self-sanity checks */ |
| |
| #include <ext2fs/ext2_fs.h> /* Main kernel ext2 include file */ |
| #include <sys/stat.h> |
| |
| #include <ncurses.h> |
| |
| #define MAX_FIELDS 400 |
| |
| #define MAX_COMMAND_LINE 81 |
| #define MAX_COMMANDS_NUM 30 /* Maximum number of commands of one type */ |
| #define REMEMBER_COUNT 30 /* Object memory size */ |
| |
| /* |
| The user screen consists of four parts: |
| |
| 1. Title window (title_win). |
| 2. Show (status) window (show_win). |
| 3. Main show pad (show_pad). |
| 4. Command window (command_win). |
| |
| */ |
| |
| /* |
| |
| The show pad is mapped to the space left between the other three windows. |
| |
| If you wondered why ext2ed grabs so memory, the answer is probably below - I wanted to treat |
| the virtual display as infinite. Decrease the following for more realistic memory consumption. |
| |
| */ |
| |
| #define SHOW_PAD_LINES 3000 |
| #define SHOW_PAD_COLS (COLS > 140 ? COLS : 140) |
| |
| #define COMMAND_WIN_LINES 6 /* Change this to your preferences */ |
| #define TITLE_WIN_LINES 3 |
| #define SHOW_WIN_LINES 3 |
| |
| #define HEX 1 |
| #define TEXT 2 |
| |
| #ifndef EXT2_PRE_02B_MAGIC |
| #define EXT2_PRE_02B_MAGIC 0xEF51 |
| #endif |
| |
| |
| typedef void (*PF) (char *); /* Used to point to the dispatched functions */ |
| |
| struct struct_commands { /* Holds commands of an object */ |
| int last_command; |
| char *names [MAX_COMMANDS_NUM]; |
| char *descriptions [MAX_COMMANDS_NUM]; |
| PF callback [MAX_COMMANDS_NUM]; |
| }; |
| |
| struct struct_descriptor { /* Describes an object */ |
| unsigned long length; |
| unsigned char name [60]; |
| unsigned short fields_num; |
| unsigned char field_names [MAX_FIELDS][80]; |
| unsigned char field_types [MAX_FIELDS]; |
| unsigned short field_lengths [MAX_FIELDS]; |
| unsigned short field_positions [MAX_FIELDS]; |
| struct struct_commands type_commands; |
| struct struct_descriptor *prev,*next; |
| }; |
| |
| #define FIELD_TYPE_INT 1 |
| #define FIELD_TYPE_UINT 2 |
| #define FIELD_TYPE_CHAR 3 |
| |
| struct struct_type_data { /* The object's data is usually here */ |
| long offset_in_block; |
| |
| union union_type_data { /* Format it in various ways */ |
| char buffer [EXT2_MAX_BLOCK_SIZE]; |
| struct ext2_acl_header t_ext2_acl_header; |
| struct ext2_acl_entry t_ext2_acl_entry; |
| struct ext2_group_desc t_ext2_group_desc; |
| struct ext2_inode t_ext2_inode; |
| struct ext2_super_block t_ext2_super_block; |
| struct ext2_dir_entry t_ext2_dir_entry; |
| } u; |
| }; |
| |
| struct struct_file_system_info { /* Important information about the filesystem */ |
| unsigned long long file_system_size; |
| unsigned long super_block_offset; |
| unsigned long first_group_desc_offset; |
| unsigned long groups_count; |
| unsigned long inodes_per_block; |
| unsigned long blocks_per_group; /* The name is misleading; beware */ |
| unsigned long no_blocks_in_group; |
| unsigned short block_size; |
| struct ext2_super_block super_block; |
| }; |
| |
| struct struct_file_info { /* Used to handle files and directories */ |
| |
| struct ext2_inode *inode_ptr; |
| |
| long inode_offset; |
| long global_block_num,global_block_offset; |
| long block_num,blocks_count; |
| long file_offset,file_length; |
| long level; |
| unsigned char buffer [EXT2_MAX_BLOCK_SIZE]; |
| long offset_in_block; |
| |
| int display; |
| /* The following is used if the file is a directory */ |
| |
| long dir_entry_num,dir_entries_count; |
| long dir_entry_offset; |
| }; |
| |
| struct struct_super_info { /* Used to handle the superblock */ |
| unsigned long copy_num; |
| }; |
| |
| struct struct_group_info { /* Used to handle the group descriptors */ |
| unsigned long copy_num; |
| unsigned long group_num; |
| }; |
| |
| struct struct_block_bitmap_info { /* Used in blockbitmap_com.c */ |
| unsigned long entry_num; |
| unsigned long group_num; |
| }; |
| |
| struct struct_inode_bitmap_info { /* Used in inodebitmap_com.c */ |
| unsigned long entry_num; |
| unsigned long group_num; |
| }; |
| |
| struct struct_remember_lifo { /* Implements the objects circular memory */ |
| long entries_count; |
| |
| long offset [REMEMBER_COUNT]; |
| struct struct_descriptor *type [REMEMBER_COUNT]; |
| char name [REMEMBER_COUNT][80]; |
| }; |
| |
| struct struct_pad_info { /* Used to zoom into the pad window */ |
| int display_lines,display_cols; |
| int line,col; |
| int max_line,max_col; |
| int disable_output; |
| }; |
| |
| /* Global variables (defined mostly in main.c) */ |
| |
| /* Configurable variables (Through configuration file) */ |
| |
| extern char AlternateDescriptors [200]; |
| extern char Ext2Descriptors [200]; |
| extern char LogFile [200]; |
| extern int LogChanges; |
| extern int AllowChanges; |
| extern int AllowMountedRead; |
| extern int ForceExt2; |
| extern int DefaultBlockSize; |
| extern unsigned long DefaultTotalBlocks; |
| extern unsigned long DefaultBlocksInGroup; |
| extern int ForceDefault; |
| |
| extern char device_name [80]; |
| extern char last_command_line [80]; |
| extern FILE *device_handle; |
| extern long device_offset; |
| extern int mounted; |
| |
| extern short block_size; |
| extern struct struct_commands general_commands; |
| extern struct struct_commands ext2_commands; |
| extern struct struct_descriptor *first_type; |
| extern struct struct_descriptor *last_type; |
| extern struct struct_descriptor *current_type; |
| extern struct struct_type_data type_data; |
| extern struct struct_file_system_info file_system_info; |
| extern struct struct_file_info file_info,first_file_info; |
| extern struct struct_group_info group_info; |
| extern struct struct_super_info super_info; |
| extern struct struct_block_bitmap_info block_bitmap_info; |
| extern struct struct_inode_bitmap_info inode_bitmap_info; |
| extern struct struct_remember_lifo remember_lifo; |
| extern struct struct_pad_info show_pad_info; |
| extern int write_access; |
| |
| extern int redraw_request; |
| extern char lines_s [80]; |
| extern char cols_s [80]; |
| |
| |
| /* init.c */ |
| |
| extern int init (void); |
| extern void prepare_to_close (void); |
| extern int set_struct_descriptors (char *file_name); |
| extern void free_struct_descriptors (void); |
| extern struct struct_descriptor *add_new_descriptor (char *name); |
| extern void add_new_variable (struct struct_descriptor *descriptor,char *v_type,char *v_name); |
| extern void fill_type_commands (struct struct_descriptor *ptr); |
| extern void add_user_command (struct struct_commands *ptr,char *name,char *description,PF callback); |
| extern void free_user_commands (struct struct_commands *ptr); |
| extern int set_file_system_info (void); |
| extern int process_configuration_file (void); |
| extern void add_general_commands (void); |
| extern void add_ext2_general_commands (void); |
| extern void check_mounted (char *name); |
| |
| int get_next_option (FILE *fp,char *option,char *value); |
| void init_readline (void); |
| void init_signals (void); |
| void signal_SIGWINCH_handler (int sig_num); |
| void signal_SIGTERM_handler (int sig_num); |
| void signal_SIGSEGV_handler (int sig_num); |
| |
| /* general_com.c */ |
| |
| /* General commands which are available always */ |
| |
| extern void help (char *command_line); |
| extern void set (char *command_line); |
| extern void set_device (char *command_line); |
| extern void set_offset (char *command_line); |
| extern void set_type (char *command_line); |
| extern void show (char *command_line); |
| extern void pgup (char *command_line); |
| extern void pgdn (char *command_line); |
| extern void redraw (char *command_line); |
| extern void remember (char *command_line); |
| extern void recall (char *command_line); |
| extern void cd (char *command_line); |
| extern void enable_write (char *command_line); |
| extern void disable_write (char *command_line); |
| extern void write_data (char *command_line); |
| extern void next (char *command_line); |
| extern void prev (char *command_line); |
| |
| void hex_set (char *command_line); |
| void detailed_help (char *text); |
| |
| |
| /* ext2_com.c */ |
| |
| /* Extended2 filesystem general commands - Available only when editing an |
| ext2 filesystem */ |
| |
| extern void type_ext2___super (char *command_line); |
| extern void type_ext2___group (char *command_line); |
| extern void type_ext2___cd (char *command_line); |
| |
| |
| /* main.c */ |
| |
| extern int version_major,version_minor; |
| extern char revision_date [80]; |
| extern char email_address [80]; |
| |
| #ifdef DEBUG |
| extern void internal_error (char *description,char *source_name,char *function_name); |
| #endif |
| |
| void parser (void); |
| extern int dispatch (char *command_line); |
| char *parse_word (char *source,char *dest); |
| char *complete_command (char *text,int state); |
| char *dupstr (char *src); |
| |
| |
| |
| /* disk.c */ |
| |
| extern int load_type_data (void); |
| extern int write_type_data (void); |
| extern int low_read (unsigned char *buffer,unsigned long length,unsigned long offset); |
| extern int low_write (unsigned char *buffer,unsigned long length,unsigned long offset); |
| extern int log_changes (unsigned char *buffer,unsigned long length,unsigned long offset); |
| |
| /* file_com.c */ |
| |
| extern int init_file_info (void); |
| extern void type_file___show (char *command_line); |
| extern void type_file___inode (char *command_line); |
| extern void type_file___display (char *command_line); |
| extern void type_file___prev (char *command_line); |
| extern void type_file___next (char *command_line); |
| extern void type_file___offset (char *command_line); |
| extern void type_file___prevblock (char *command_line); |
| extern void type_file___nextblock (char *command_line); |
| extern void type_file___block (char *command_line); |
| extern void type_file___remember (char *command_line); |
| extern void type_file___set (char *command_line); |
| extern void type_file___writedata (char *command_line); |
| |
| extern long file_block_to_global_block (long file_block,struct struct_file_info *file_info_ptr); |
| extern long return_indirect (long table_block,long block_num); |
| extern long return_dindirect (long table_block,long block_num); |
| extern long return_tindirect (long table_block,long block_num); |
| |
| void file_show_hex (void); |
| void file_show_text (void); |
| void show_status (void); |
| |
| /* inode_com.c */ |
| |
| extern void type_ext2_inode___next (char *command_line); |
| extern void type_ext2_inode___prev (char *command_line); |
| extern void type_ext2_inode___show (char *command_line); |
| extern void type_ext2_inode___group (char *command_line); |
| extern void type_ext2_inode___entry (char *command_line); |
| extern void type_ext2_inode___file (char *command_line); |
| extern void type_ext2_inode___dir (char *command_line); |
| |
| extern long inode_offset_to_group_num (long inode_offset); |
| extern long int inode_offset_to_inode_num (long inode_offset); |
| extern long int inode_num_to_inode_offset (long inode_num); |
| |
| /* dir_com.c */ |
| |
| extern int init_dir_info (struct struct_file_info *info); |
| extern void type_dir___show (char *command_line); |
| extern void type_dir___inode (char *command_line); |
| extern void type_dir___pgdn (char *command_line); |
| extern void type_dir___pgup (char *command_line); |
| extern void type_dir___prev (char *command_line); |
| extern void type_dir___next (char *command_line); |
| extern void type_dir___followinode (char *command_line); |
| extern void type_dir___remember (char *command_line); |
| extern void type_dir___cd (char *command_line); |
| extern void type_dir___entry (char *command_line); |
| extern void type_dir___writedata (char *command_line); |
| extern void type_dir___set (char *command_line); |
| |
| #define HEX 1 |
| #define TEXT 2 |
| |
| #define ABORT 0 |
| #define CONTINUE 1 |
| #define FOUND 2 |
| |
| struct struct_file_info search_dir_entries (int (*action) (struct struct_file_info *info),int *status); |
| int action_count (struct struct_file_info *info); |
| void show_dir_status (void); |
| long count_dir_entries (void); |
| int action_name (struct struct_file_info *info); |
| int action_entry_num (struct struct_file_info *info); |
| int action_show (struct struct_file_info *info); |
| |
| /* super_com.c */ |
| |
| extern void type_ext2_super_block___show (char *command_line); |
| extern void type_ext2_super_block___gocopy (char *command_line); |
| extern void type_ext2_super_block___setactivecopy (char *command_line); |
| |
| /* group_com.c */ |
| |
| extern void type_ext2_group_desc___next (char *command_line); |
| extern void type_ext2_group_desc___prev (char *command_line); |
| extern void type_ext2_group_desc___entry (char *command_line); |
| extern void type_ext2_group_desc___show (char *command_line); |
| extern void type_ext2_group_desc___inode (char *command_line); |
| extern void type_ext2_group_desc___gocopy (char *command_line); |
| extern void type_ext2_group_desc___blockbitmap (char *command_line); |
| extern void type_ext2_group_desc___inodebitmap (char *command_line); |
| extern void type_ext2_group_desc___setactivecopy (char *command_line); |
| |
| /* blockbitmap_com.c */ |
| |
| extern void type_ext2_block_bitmap___show (char *command_line); |
| extern void type_ext2_block_bitmap___entry (char *command_line); |
| extern void type_ext2_block_bitmap___next (char *command_line); |
| extern void type_ext2_block_bitmap___prev (char *command_line); |
| extern void type_ext2_block_bitmap___allocate (char *command_line); |
| extern void type_ext2_block_bitmap___deallocate (char *command_line); |
| void allocate_block (long entry_num); |
| void deallocate_block (long entry_num); |
| |
| /* inodebitmap_bom.c */ |
| |
| extern void type_ext2_inode_bitmap___show (char *command_line); |
| extern void type_ext2_inode_bitmap___entry (char *command_line); |
| extern void type_ext2_inode_bitmap___next (char *command_line); |
| extern void type_ext2_inode_bitmap___prev (char *command_line); |
| extern void type_ext2_inode_bitmap___allocate (char *command_line); |
| extern void type_ext2_inode_bitmap___deallocate (char *command_line); |
| void allocate_inode (long entry_num); |
| void deallocate_inode (long entry_num); |
| |
| /* win.c */ |
| |
| extern WINDOW *title_win,*show_win,*command_win,*show_pad; |
| |
| extern void init_windows (void); |
| extern void refresh_title_win (void); |
| extern void refresh_show_win (void); |
| extern void refresh_show_pad (void); |
| extern void refresh_command_win (void); |
| extern void show_info (void); |
| extern void redraw_all (void); |
| extern void close_windows (void); |
| |
| #endif /* EXT2ED_EDITOR_H */ |
