2.9BSD - /usr/src/cmd/refer/refer/glue2.c

   1: #include <stdio.h>
   2: # define move(x, y) close(y); dup(x); close(x);
   3: char refdir[50];
   4: savedir()
   5: {
   6:     int pipev[2];
   7:     int status, n;
   8: 
   9:     if (refdir[0]==0) {
  10:         pipe (pipev);
  11:         if (fork()==0)
  12:         {
  13:             close (pipev[0]);
  14:             move (pipev[1], 1);
  15:             execl("/bin/pwd", "pwd", 0);
  16:             fprintf(stderr,"Can't run /bin/pwd");
  17:             exit(1);
  18:         }
  19:         close(pipev[1]);
  20:         wait(&status);
  21:         if (status)
  22:             err("Can't run pwd");
  23:         n = read (pipev[0], refdir, 49);
  24:         refdir[n]=0;
  25:         close(pipev[0]);
  26:         trimnl(refdir);
  27:     }
  28: }
  29: restodir()
  30: {
  31:     chdir(refdir);
  32: }

Defined functions

Defined variables

Defined macros