/* /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 /* Main kernel ext2 include file */ #include #include #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 */