/****************************************************************/ /* */ /* de.h */ /* */ /* Definitions for the "Disk editor". */ /* */ /****************************************************************/ /* origination 1989-Jan-15 Terrence W. Holm */ /****************************************************************/ /****************************************************************/ /* */ /* de(1) */ /* */ /* This is the MINIX disk editor. It allows the user to */ /* observe and modify a file system. It can also be used */ /* to recover unlink(2)'ed files */ /* */ /* See the de(1) man page. */ /* */ /****************************************************************/ /****************************************************************/ /* */ /* de Copyright Terrence W. Holm 1989 */ /* */ /* This program was written for users of the Minix operating */ /* system, and in the spirit of other public domain software */ /* written for said system, this source code is made available */ /* at no cost to everyone. I assume no responsibility for */ /* damage to file systems caused by this program. */ /* */ /* This program (one .h, five .c's and a "man" page) may be */ /* copied and/or modified subject to (1) no charge must be */ /* made for distribution, other than for the medium, (2) all */ /* modified sources must be clearly marked as such, (3) all */ /* sources must carry this copyright. */ /* */ /****************************************************************/ /****************************************************************/ /* */ /* files */ /* */ /* de.h Definitions */ /* de.c The main loop */ /* de_stdin.c Character input routines */ /* de_stdout.c Output routines */ /* de_diskio.c File system read/write */ /* de_recover.c File restoration routines */ /* */ /* de.1 "Man" page */ /* Makefile For "make" */ /* README Installation help */ /* */ /* */ /* fs/path.c was modified to support the 'x' command. */ /* fs/link.c and fs/open.c were changed for 'X'. */ /* */ /****************************************************************/ #undef printf #include #include /* General constants */ #define MAX_STRING 60 /* For all input lines */ #define MAX_PREV 8 /* For 'p' command */ #define SEARCH_BUFFER (4*K) /* For '/' and 'n' */ /* Files */ #define TMP "/tmp" /* For "-r" output */ #define DEV "/dev" /* Where devices are */ /* a.out header constants (see a.out.h, if you have it) */ #if (CHIP == INTEL) #define A_OUT 0x0301 #define SPLIT 0x0420 #endif #if (CHIP == M68000) #define A_OUT 0x0301 #define SPLIT 0x0B20 #endif #if (CHIP == SPARC) #define A_OUT 0x0301 #define SPLIT 0x0B20 #endif /* Each buffer is 1k. In WORD mode 16 words (32 bytes) can be */ /* displayed at once. In BLOCK mode 1K bytes can be displayed. */ /* In MAP mode 2048 bits (256 bytes) are displayed. */ #define K 1024 /* STD_BLK */ #define K_MASK (~(K-1)) /* Round to K boundary */ #define K_SHIFT 10 /* Ie. 1<<10 = K */ #define PAGE_MASK 0x1f /* Word mode: 32 bytes */ #define PAGE_SHIFT 5 /* Ie. 1<<5 = 32 */ #define MAP_BITS_PER_BLOCK (8 * K) /* 1k block, 8192 bits */ #define MAP_MASK 0xff /* 256 bytes/screen */ /* Terminal i/o codes */ #define CTRL_D '\004' /* ASCII ^D */ #define BELL '\007' /* ASCII bell code */ #define BS '\010' /* ASCII back space */ #define CTRL_U '\025' /* ASCII ^U */ #define ESCAPE '\033' /* ASCII escape code */ #define DEL '\177' /* ASCII delete code */ /* Input escape codes generated by the Minix console. */ /* Format: ESC [ X. */ #define ESC_HOME ('H' + 0x80) #define ESC_UP ('A' + 0x80) #define ESC_PGUP ('V' + 0x80) #define ESC_LEFT ('D' + 0x80) #define ESC_5 ('G' + 0x80) #define ESC_RIGHT ('C' + 0x80) #define ESC_END ('Y' + 0x80) #define ESC_DOWN ('B' + 0x80) #define ESC_PGDN ('U' + 0x80) #define ESC_PLUS ('T' + 0x80) #define ESC_MINUS ('S' + 0x80) /* Graphic box codes - only applicable for console display */ /* in visual mode "map". */ #if (CHIP == INTEL) #define BOX_CLR ' ' /* Empty box */ #define BOX_ALL '\333' /* Filled box */ #define BOX_TOP '\337' /* Filled upper half */ #define BOX_BOT '\334' /* Filled lower half */ #endif #if (CHIP == M68000) /* Please change these. */ #define BOX_CLR ' ' /* Empty box */ #define BOX_ALL '=' /* Filled box */ #define BOX_TOP '-' /* Filled upper half */ #define BOX_BOT '_' /* Filled lower half */ #endif #if (CHIP == SPARC) /* Please change these. */ #define BOX_CLR ' ' /* Empty box */ #define BOX_ALL '=' /* Filled box */ #define BOX_TOP '-' /* Filled upper half */ #define BOX_BOT '_' /* Filled lower half */ #endif /* Move positions for the output display. */ #define STATUS_COLUMN 2 #define STATUS_LINE 0 #define BLOCK_COLUMN 4 #define BLOCK_LINE 4 #define INFO_COLUMN 30 #define INFO_LINE BLOCK_LINE #define PROMPT_COLUMN 0 #define PROMPT_LINE 23 #define WARNING_COLUMN 5 #define WARNING_LINE 10 /* Values returned by Process() and Get_Filename() */ #define OK 0 /* No update required */ #define REDRAW 1 /* Redraw whole screen */ #define REDRAW_POINTERS 2 /* Redraw just ptrs */ #define ERROR 3 /* Beep */ /* Visual modes */ #define WORD 1 #define BLOCK 2 #define MAP 3 typedef unsigned short word_t; /* For most user i/o */ #if _WORD_SIZE == 2 typedef unsigned int Word_t; /* What it should always be */ #else typedef int Word_t; /* Unsigned promotion under ANSI C */ #endif #ifndef I_MAP_SLOTS /* Max number of inode and zone map blocks we can handle. */ #define I_MAP_SLOTS 8 #define Z_MAP_SLOTS (sizeof(char *) == 2 ? 16 : 128) #endif typedef struct de_state /* State of disk ed. */ { /* Information from super block */ /* The types here are mostly promoted types for simplicity */ /* and efficiency. */ unsigned inodes; /* Number of i-nodes */ zone_t zones; /* Total # of blocks */ unsigned inode_maps; /* I-node map blocks */ unsigned zone_maps; /* Zone map blocks */ unsigned inode_blocks; /* I-node blocks */ unsigned first_data; /* Total non-data blks */ int magic; /* Magic number */ /* Numbers derived from the magic number */ unsigned char is_fs; /* Nonzero for good fs */ unsigned char v1; /* Nonzero for V1 fs */ unsigned inode_size; /* Size of disk inode */ unsigned nr_indirects; /* # indirect blocks */ unsigned zone_num_size; /* Size of disk z num */ int block_size; /* FS block size */ /* Other derived numbers */ bit_t inodes_in_map; /* Bits in i-node map */ bit_t zones_in_map; /* Bits in zone map */ int ndzones; /* # direct zones in an inode */ /* Information from map blocks */ bitchunk_t inode_map[ I_MAP_SLOTS * K / sizeof (bitchunk_t) ]; bitchunk_t zone_map[ Z_MAP_SLOTS * K / sizeof (bitchunk_t) ]; /* Information for current block */ off_t address; /* Current address */ off_t last_addr; /* For erasing ptrs */ zone_t block; /* Current block (1K) */ unsigned offset; /* Offset within block */ char buffer[ _MAX_BLOCK_SIZE ]; /* Display state */ int mode; /* WORD, BLOCK or MAP */ int output_base; /* 2, 8, 10, or 16 */ /* Search information */ char search_string[ MAX_STRING + 1 ]; /* For '/' and 'n' */ off_t prev_addr[ MAX_PREV ]; /* For 'p' command */ int prev_mode[ MAX_PREV ]; /* File information */ char *device_name; /* From command line */ int device_d; int device_mode; /* O_RDONLY or O_RDWR */ zone_t device_size; /* Number of blocks */ char file_name[ MAX_STRING + 1 ]; /* For 'w' and 'W' */ FILE *file_f; int file_written; /* Flag if written to */ } de_state; /* Forward references for external routines */ /* de.c */ _PROTOTYPE(void main , (int argc , char *argv [])); _PROTOTYPE(int Process , (de_state *s , int c )); #if __STDC__ void Error( const char *text, ... ); #else void Error(); #endif _PROTOTYPE(int In_Use , (bit_t bit , bitchunk_t *map )); _PROTOTYPE(ino_t Find_Inode , (de_state *s , char *filename )); /* de_stdin.c */ _PROTOTYPE(void Save_Term , (void)); _PROTOTYPE(void Set_Term , (void)); _PROTOTYPE(void Reset_Term , (void)); _PROTOTYPE(int Get_Char , (void)); _PROTOTYPE(char *Get_Line , (void)); _PROTOTYPE(int Arrow_Esc , (int c )); /* de_stdout.c */ _PROTOTYPE(int Init_Termcap , (void)); _PROTOTYPE(void Draw_Help_Screen , (de_state *s )); _PROTOTYPE(void Wait_For_Key , (void)); _PROTOTYPE(void Draw_Prompt , (char *string )); _PROTOTYPE(void Erase_Prompt , (void)); _PROTOTYPE(void Draw_Screen , (de_state *s )); _PROTOTYPE(void Draw_Strings , (de_state *s )); _PROTOTYPE(void Draw_Pointers , (de_state *s )); _PROTOTYPE(void Print_Ascii , (int c )); _PROTOTYPE(void Goto , (int column , int line )); _PROTOTYPE(void Block_Type , (de_state *s )); _PROTOTYPE(void Draw_Words , (de_state *s )); _PROTOTYPE(void Draw_Info , (de_state *s )); _PROTOTYPE(void Draw_Block , (char *block )); _PROTOTYPE(void Draw_Map , (char *block , int max_bits )); _PROTOTYPE(void Draw_Offset , (de_state *s )); _PROTOTYPE(void Word_Pointers , (off_t old_addr , off_t new_addr )); _PROTOTYPE(void Block_Pointers , (off_t old_addr , off_t new_addr )); _PROTOTYPE(void Map_Pointers , (off_t old_addr , off_t new_addr )); _PROTOTYPE(void Print_Number , (Word_t number , int output_base )); _PROTOTYPE(void Draw_Zone_Numbers , (de_state *s , struct inode *inode , int zindex , int zrow )); #if __STDC__ void Warning( const char *text, ... ); #else void Warning(); #endif /* de_diskio.c */ _PROTOTYPE(void Read_Disk , (de_state *s , off_t block_addr , char *buffer )); _PROTOTYPE(void Read_Block , (de_state *s , char *buffer )); _PROTOTYPE(void Read_Super_Block , (de_state *s )); _PROTOTYPE(void Read_Bit_Maps , (de_state *s )); _PROTOTYPE(off_t Search , (de_state *s , char *string )); _PROTOTYPE(void Write_Word , (de_state *s , Word_t word )); /* de_recover.c */ _PROTOTYPE(int Path_Dir_File , (char *path_name , char **dir_name , char **file_name )); _PROTOTYPE(char *File_Device , (char *file_name )); _PROTOTYPE(ino_t Find_Deleted_Entry , (de_state *s , char *path_name )); _PROTOTYPE(off_t Recover_Blocks , (de_state *s )); #undef printf /* Because fs/const.h */ /* defines it. */ /* Static functions are all pre-declared FORWARD but none are */ /* declared static yet - this can wait until all functions are */ /* declared with prototypes. */ #undef FORWARD #define FORWARD /* static */