SBSPSS/tools/psyq/include/FS.H

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2000-08-29 18:26:01 +02:00
/*
* File:fs.h
*/
/*
* $PSLibId: Run-time Library Release 4.7$
*/
#ifndef _FS_H
#define _FS_H
#if defined(_LANGUAGE_C)||defined(LANGUAGE_C)||defined(_LANGUAGE_C_PLUS_PLUS)||defined(__cplusplus)||defined(c_plusplus)
/* device table */
struct device_table {
char *dt_string; /* device name */
int dt_type; /* device "type" */
int dt_bsize; /* file system type */
char *dt_desc; /* device description */
int (*dt_init)(); /* device init routine */
int (*dt_open)(); /* device open routine */
int (*dt_strategy)(); /* device strategy routine, returns cnt */
int (*dt_close)(); /* device close routine */
int (*dt_ioctl)(); /* device ioctl routine */
int (*dt_read)(); /* fs read routine, returns count */
int (*dt_write)(); /* fs write routine, return count */
int (*dt_delete)(); /* file delete routine */
int (*dt_undelete)(); /* file delete routine */
int (*dt_firstfile)(); /* directory serach routine */
int (*dt_nextfile)(); /* directory serach routine */
int (*dt_format)();
int (*dt_cd)();
int (*dt_rename)();
int (*dt_remove)();
int (*dt_else)();
};
#endif /* LANGUAGE_C */
/* device types */
#define DTTYPE_CHAR 0x1 /* character device */
#define DTTYPE_CONS 0x2 /* can be console */
#define DTTYPE_BLOCK 0x4 /* block device */
#define DTTYPE_RAW 0x8 /* raw device that uses fs switch */
#define DTTYPE_FS 0x10
/* character device flags */
#define DB_RAW 0x1 /* don't interpret special chars */
#define DB_STOPPED 0x2 /* stop output */
#define DB_BREAK 0x4 /* cntl-c raise console interrpt */
/* character device buffer */
#define CBUFSIZE 256
#if defined(_LANGUAGE_C)||defined(LANGUAGE_C)||defined(_LANGUAGE_C_PLUS_PLUS)||defined(__cplusplus)||defined(c_plusplus)
struct device_buf {
int db_flags; /* character device flags */
char *db_in; /* pts at next free char */
char *db_out; /* pts at next filled char */
char db_buf[CBUFSIZE]; /* circular buffer for input */
};
#endif /* LANGUAGE_C */
/* circular buffer functions */
#define CIRC_EMPTY(x) ((x)->db_in == (x)->db_out)
#define CIRC_FLUSH(x) ((x)->db_in = (x)->db_out = (x)->db_buf)
#define CIRC_STOPPED(x) ((x)->db_flags & DB_STOPPED)
/* io block */
#if defined(_LANGUAGE_C)||defined(LANGUAGE_C)||defined(_LANGUAGE_C_PLUS_PLUS)||defined(__cplusplus)||defined(c_plusplus)
struct iob {
int i_flgs;
int i_unit; /* pseudo device unit */
char *i_ma; /* memory address of i/o buffer */
unsigned int i_cc; /* character count of transfer */
unsigned long i_offset; /* seek offset in file */
int i_fstype; /* file system type */
int i_errno; /* error # return */
struct device_table *i_dp; /* pointer into device_table */
unsigned long i_size;
long i_head;
long i_fd; /* file descriptor */
};
#endif /* LANGUAGE_C */
#ifndef NULL
#define NULL 0
#endif
/* Request codes */
#define READ 1
#define WRITE 2
#define NIOB 16 /* max number of open files */
/*
extern int _nulldev();
extern int _nodev();
*/
#endif /* _FS_H */