4.3BSD - /usr/src/new/cpm/src/cpmfio.h

   1: /*	cpmfio.h	1.5	83/05/13	*/
   2: 
   3: #define C_NFILE     5   /* max number of concurrently open cp/m files */
   4: 
   5: typedef struct  c_iobuf {
   6:     int c_cnt;      /* bytes left in buffer */
   7:     int c_blk;      /* block number within the current extent */
   8:                 /* (starting at 0) */
   9:     int c_seccnt;   /* number of physical sectors left in */
  10:                 /* the current extent */
  11:     int c_ext;      /* current extent's directory index */
  12:     int c_extno;    /* extent number within current file */
  13:     char    *c_buf;     /* next character position */
  14:     char    *c_base;    /* location of buffer */
  15:     short   c_flag;     /* access mode (READ or WRITE) */
  16:     struct directory *c_dirp;   /* pointer to the current */
  17:                     /* extent's directory entry */
  18: }   C_FILE;
  19: extern  C_FILE  c_iob[C_NFILE];
  20: 
  21: #define c_getc(p)   (--(p)->c_cnt>=0 ? *(p)->c_buf++&0377 : c_fillbuf(p))
  22: #define c_putc(x,p) (--(p)->c_cnt>=0 ? ((int)(*(p)->c_buf++=(unsigned)(x))) : c_flsbuf((unsigned)(x), p))
  23: 
  24: C_FILE  *c_open(), *c_creat();
  25: 
  26: #define READ    0x01
  27: #define WRITE   0x02
  28: #define RW  0x03
  29: #define MODFLG  0x08
  30: #define BINARY  0x10

Defined struct's

Defined typedef's

Defined macros

Usage of this include