bin/puname/puname.c

   1 /*
   2  * Copyright 2017 Lauri Tirkkonen <lotheac@iki.fi>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <err.h>
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20
  21 static void
  22 usage(void)
  23 {
  24         printf("usage: puname command [args]\n");
  25         exit(1);
  26 }
  27
  28 int
  29 main(int argc, char **argv)
  30 {
  31         if (argc < 2)
  32                 usage();
  33
  34         if (setenv("UNAME_LEGACY", "", 0) < 0)
  35                 err(1, "setenv");
  36         argv++;
  37         execvp(argv[0], argv);
  38         err(1, "cannot execute %s", argv[0]);
  39         return 1;
  40 }