src/misc-progs/iowrap.c

   1 /* SmoothWall helper program - iowrap.
   2  *
   3  * This program is distributed under the terms of the GNU General Public
   4  * Licence.  See the file COPYING for details.
   5  *
   6  * (c) Lawrence Manning, 2001
   7  * Installer helper for redirecting stdout/stderr to a file/terminal.
   8  * init calls ash through this program to shove it on a tty.
   9  *
  10  * $Id: iowrap.c,v 1.2 2001/11/27 15:20:50 riddles Exp $
  11  *
  12  */
  13
  14 #include <stdio.h>
  15 #include <sys/types.h>
  16 #include <sys/stat.h>
  17 #include <fcntl.h>
  18 #include <unistd.h>
  19
  20 int main(int argc, char *argv[])
  21 {
  22         /* Prog takes one argument.  A device to run on (like a getty) */
  23         if (argc >= 2)
  24         {
  25                 int fd;
  26
  27                 if ((fd = open(argv[1], O_RDWR)) == -1)
  28                 {
  29                         printf("Couldn't open device\n");
  30                         return 0;
  31                 }
  32                 dup2(fd, 0);
  33                 dup2(fd, 1);
  34                 dup2(fd, 2);
  35                 /* Now its sending/reading on that device. */
  36         }
  37
  38         if (argc >= 3)
  39                 execvp(argv[2], &argv[2]);
  40         else
  41                 printf("No command\n");
  42
  43         return 0;
  44 }