diplodocus.org Git - nmh/blob - docs/historical/mh-nov-1983/subs/showfile.c

   1 #include "mh.h"
   2 #include <signal.h>
   3 #include <stdio.h>
   4
   5 showfile(file)
   6 char *file;
   7 {
   8         int pid, wpid, intr, status;
   9         char *vec[4];
  10
  11         intr = (int) signal(SIGINT, SIG_IGN);
  12         m_update();
  13         fflush(stdout);
  14         if((pid = fork()) == 0) {
  15                 vec[0] = "mh-type";
  16                 vec[1] = file;
  17                 vec[2] = 0;
  18                 signal(SIGINT, (int (*)()) intr);
  19                 execv(showproc, vec);
  20                 perror("Can't exec showproc");
  21                 goto badleave;
  22         } else if(pid == -1) {
  23                 fprintf(stderr, "No forks!\n");
  24                 goto badleave;
  25         } else
  26                 while((wpid = wait(&status)) != -1 && wpid != pid) ;
  27         signal(SIGINT, (int (*)()) intr);
  28         if(status & 0377)
  29                 goto badleave;
  30         return(0);
  31
  32  badleave:
  33         fflush(stdout);
  34         return(1);
  35
  36 }
  37