source: buchla-68k/orig/lib/INCLUDE/LIBC.H

/*
   ============================================================================
        libc.h -- "One stop source" of C library definitions for the Buchla 700
        Version 4 -- 1987-07-01 -- D.N. Lynx Crowe

        This defines a lot of what fspars.h, stdio.h, io.h, and fcntl.h
        have to offer,  which means, of course, that you must not use
        this header file if you use one of those.
   ============================================================================
*/

#include "fspars.h"             /* file system parameters */

extern int errno;               /* most recent error code */

struct channel {

        char c_read;
        char c_write;
        char c_ioctl;
        char c_seek;
        int (*c_close)();
        arg c_arg;
} ;

struct channel chantab[MAXCHAN];

#define NULL 0
#define EOF -1

#define _BUSY   0x01
#define _ALLBUF 0x02
#define _DIRTY  0x04
#define _EOF    0x08
#define _IOERR  0x10

typedef struct {

        char    *_bp;           /* current position in buffer */
        char    *_bend;         /* last character in buffer + 1 */
        char    *_buff;         /* address of buffer */
        char    _flags;         /* {_BUSY, _ALLBUF, _DIRTY, _EOF, _IOERR} */
        char    _unit;          /* fd token returned by open */
        char    _bytbuf;        /* single byte buffer for unbuffered streams */
        char    _pad;           /* pad for alignment -- possibly use later */
        int     _buflen;        /* length of buffer */

} FILE;

extern  FILE Cbuffs[NSTREAMS];          /* table of FILE structures */
extern  char *Stdbufs;                  /* free list of buffers */
extern  long ftell();

#define stdin (&Cbuffs[0])
#define stdout (&Cbuffs[1])
#define stderr (&Cbuffs[2])
#define getchar() agetc(stdin)
#define putchar(c) aputc(c, stdout)
#define feof(fp) (((fp)->_flags&_EOF)!=0)
#define ferror(fp) (((fp)->_flags&_IOERR)!=0)
#define clearerr(fp) ((fp)->_flags &= ~(_IOERR|_EOF))
#define fileno(fp) ((fp)->_unit)

#define O_RDONLY        0x0000  /* Read-only value  */
#define O_WRONLY        0x0001  /* Write-only value */
#define O_RDWR          0x0002  /* Read-write value */

#define O_NDELAY        0x0004  /* Non-blocking I/O flag */
#define O_APPEND        0x0008  /* Append mode flag (write only at end) */

#define O_CREAT         0x0100  /* File creation flag (uses 3rd argument) */
#define O_TRUNC         0x0200  /* File truncation flag */
#define O_EXCL          0x0400  /* Exclusive access flag */

#define O_RAW           0x8000  /* Raw (binary) I/O flag for getc and putc */