4.3BSD - /usr/src/new/mkmf/src/mustfopen.c

   1: /* $Header: mustfopen.c,v 1.2 85/03/17 12:51:04 nicklin Exp $ */
   2: 
   3: /*
   4:  * Author: Peter J. Nicklin
   5:  */
   6: 
   7: /*
   8:  * mustfopen() opens a file in the manner of fopen(3). However, if the file
   9:  * cannot be accessed, exit(1) is called.
  10:  */
  11: #include <stdio.h>
  12: 
  13: extern char *PGN;       /* program name */
  14: 
  15: FILE *
  16: mustfopen(filename,mode)
  17:     char *filename;
  18:     char *mode;
  19: {
  20:     FILE *stream;           /* file stream */
  21: 
  22:     if ((stream = fopen(filename,mode)) == NULL)
  23:         {
  24:         if (*PGN != '\0')
  25:             fprintf(stderr, "%s: ", PGN);
  26:         fprintf(stderr, "can't open %s\n",filename);
  27:         exit(1);
  28:         }
  29:     return(stream);
  30: }

Defined functions