| /* See LICENSE file for copyright and license details. */ |
| #include <errno.h> |
| #include <unistd.h> |
| |
| #include "util.h" |
| |
| static void |
| usage(void) |
| { |
| eprintf("usage: %s cmd [arg ...]\n", argv0); |
| } |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| int savederrno; |
| |
| argv0 = argv[0], argc--, argv++; |
| |
| if (!argc) |
| usage(); |
| |
| if (getpgrp() == getpid()) { |
| switch (fork()) { |
| case -1: |
| eprintf("fork:"); |
| case 0: |
| break; |
| default: |
| return 0; |
| } |
| } |
| if (setsid() < 0) |
| eprintf("setsid:"); |
| execvp(argv[0], argv); |
| savederrno = errno; |
| weprintf("execvp %s:", argv[0]); |
| |
| _exit(126 + (savederrno == ENOENT)); |
| } |