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