minix/lib/libminlib/tools.h

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#ifndef _INCLUDE_TOOLS_H
#define _INCLUDE_TOOLS_H 1
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/* Constants describing the disk */
#define SECTOR_SIZE 512
#define SECTOR_SHIFT 9
#define RATIO(b) ((b)/SECTOR_SIZE)
#define ISO_SECTOR_SIZE 2048
#define ISO_PVD_OFFSET 16
#define HRATIO (SECTOR_SIZE / HCLICK_SIZE)
#define PARAMSEC 1 /* sector containing boot parameters */
#define DSKBASE 0x1E /* floppy disk parameter vector */
#define DSKPARSIZE 11 /* there are this many bytes of parameters */
#define ESC '\33' /* escape key */
#define HEADERSEG 0x0060 /* place for an array of struct exec's */
#define MINIXSEG 0x0080 /* MINIX loaded here (rounded up to a click) */
#define BOOTSEG 0x07C0 /* bootstraps are loaded here */
#define SIGNATURE 0xAA55 /* proper bootstraps have this signature */
#define SIGNATPOS 510 /* offset within bootblock */
#define FREESEG 0x0800 /* Memory from FREESEG to cseg is free */
#define MSEC_PER_TICK 55 /* 18.2 ticks per second */
/* Scan codes for four different keyboards (from kernel/keyboard.c) */
#define DUTCH_EXT_SCAN 32 /* 'd' */
#define OLIVETTI_SCAN 12 /* '=' key on olivetti */
#define STANDARD_SCAN 13 /* '=' key on IBM */
#define US_EXT_SCAN 22 /* 'u' */
/* Other */
#define ROOT_INO ((ino_t) 1) /* Inode nr of root dir. */
#define IM_NAME_MAX 63
/* Variables */
#ifndef EXTERN
#define EXTERN extern
#endif
typedef struct vector {
u16_t offset;
u16_t segment;
} vector;
struct image_header {
char name[IM_NAME_MAX + 1]; /* Null terminated. */
struct exec process;
};
EXTERN vector rem_part; /* boot partition table entry */
EXTERN u16_t cseg, dseg; /* code and data segment of the boot program */
EXTERN u32_t runsize; /* size of this program */
EXTERN u16_t device; /* drive being booted from */
EXTERN u16_t heads, sectors; /* the drive's number of heads and sectors */
extern u16_t eqscancode; /* Set by peek/getch() if they see a '=' */
/* Sticky attributes */
#define E_SPECIAL 0x01 /* These are known to the program */
#define E_DEV 0x02 /* The value is a device name */
#define E_RESERVED 0x04 /* May not be set by user, e.g. scancode */
#define E_STICKY 0x07 /* Don't go once set */
/* Volatile attributes */
#define E_VAR 0x08 /* Variable */
#define E_FUNCTION 0x10 /* Function definition */
typedef struct environment {
struct environment *next;
char flags;
char *name; /* name = value */
char *arg; /* name(arg) {value} */
char *value;
char *defval; /* Safehouse for default values */
} environment;
/* External variables */
EXTERN environment *env; /* Lists the environment */
EXTERN int fsok; /* True if the boot device contains an FS */
EXTERN u32_t lowsec; /* Offset to the file system on the boot dev */
#if defined(_MINIX) || defined(__minix) || defined(__ACK__)
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/* Prototypes */
off_t r_super(void);
void r_stat(Ino_t _inum, struct stat *_stp );
ino_t r_readdir(char *_name );
off_t r_vir2abs(off_t _virblk );
ino_t r_lookup(Ino_t _cwd, char *_path );
#endif
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#ifdef _MONHEAD
void readerr(off_t _sec, int _err );
int numprefix(char *_s, char **_ps );
int numeric(char *_s );
dev_t name2dev(char *_name );
int delay(char *_msec );
char *unix_err(int _err );
void init_cache(void);
void invalidate_cache(void);
char *b_value(char *_name );
void raw_copy(int _doff, int _dseg, int _soff, int _sseg, int _count);
void raw_clear(int _off, int _seg, int _count);
void bootstrap(int _device, int _partoff, int _partseg);
long a2l(char *_a );
char *ul2a(u32_t _n );
char *u2a(int _n1 );
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/* Functions defined in monhead.s and usable by other files. */
void reset_video(int color);
int dev_geometry(void);
u16_t get_ext_memsize(void);
u16_t get_low_memsize(void);
u16_t get_processor(void);
u32_t get_tick(void);
u16_t get_video(void);
u16_t get_word(int _off, int _seg);
int getchar(void);
void minix(void);
void minix86(int _kcs, int _kds, char *_bpar, int _psize);
void minix386(int _kcs, int _kds, char *_bpar, int _psize);
int peekchar(void);
void put_word(int _off, int _seg, int _word);
int putchar(char _c);
int readsectors(int _off, int _seg, off_t _adr, int _ct);
void reboot(void);
void relocate(void);
int writesectors(int _off, int _seg, off_t _adr, int _ct);
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#endif
#endif