4.3BSD - /usr/src/new/notes/src/pageout.c

   1: #include "parms.h"
   2: #include "structs.h"
   3: 
   4: #ifdef  RCSIDENT
   5: static char rcsid[] = "$Header: pageout.c,v 1.7 85/01/18 15:33:54 notes Rel $";
   6: #endif	RCSIDENT
   7: 
   8: /*
   9:  *	pageout(where,zfile)
  10:  *	FILE *zfile; struct daddr_f *where;
  11:  *
  12:  *	Dumps the page to the file. Returns the characters dumped.
  13:  *
  14:  *	Original Coding:	Ray Essick	Long agao
  15:  *		moved out of gtext.c and mult.c and others   4/5/82
  16:  *	Converted for infinite size notes	RBE 5/8/82
  17:  *
  18:  */
  19: 
  20: pageout (io, where, zfile)
  21: struct io_f *io;
  22: struct daddr_f *where;
  23: FILE * zfile;
  24: {
  25:     int     i,
  26:             j,
  27:             lines;
  28:     long    count;
  29:     struct txtbuf_f buf;                /* hold text */
  30: 
  31:     lines = 0;
  32: 
  33:     if (where -> addr == 0)             /* no text */
  34:     where -> textlen = 0;               /* fix this */
  35:     x (lseek (io -> fidtxt, where -> addr, 0) != where -> addr, "pageout: seek");
  36:     for (j = i = count = 0; count < where -> textlen; count++)
  37:     {
  38:     if (i == j)                 /* another buffer */
  39:     {
  40:         x ((j = read (io -> fidtxt, buf.txtbuf, BUFSIZE)) < 0, "pageout: read");
  41:         i = 0;
  42:     }
  43:     putc (buf.txtbuf[i], zfile);
  44:     if (buf.txtbuf[i++] == '\n')
  45:         lines++;                    /* count lines */
  46:     }
  47:     return lines;
  48: }

Defined functions

Defined variables