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Diffstat (limited to '')
| -rw-r--r-- | ext2ed/ext2ed.h | 435 |
1 files changed, 435 insertions, 0 deletions
diff --git a/ext2ed/ext2ed.h b/ext2ed/ext2ed.h new file mode 100644 index 0000000..0ac77b7 --- /dev/null +++ b/ext2ed/ext2ed.h @@ -0,0 +1,435 @@ + +/* + +/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 */ |