Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 2 | /* |
Glenn L McGrath | ebdc8b4 | 2002-09-16 03:47:48 +0000 | [diff] [blame] | 3 | * openvt.c - open a vt to run a command. |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 4 | * |
Glenn L McGrath | ebdc8b4 | 2002-09-16 03:47:48 +0000 | [diff] [blame] | 5 | * busyboxed by Quy Tonthat <quy@signal3.com> |
Glenn L McGrath | 0a3b010 | 2003-05-13 16:31:15 +0000 | [diff] [blame] | 6 | * hacked by Tito <farmatito@tiscali.it> |
Glenn L McGrath | ebdc8b4 | 2002-09-16 03:47:48 +0000 | [diff] [blame] | 7 | * |
Bernhard Reutner-Fischer | b1629b1 | 2006-05-19 19:29:19 +0000 | [diff] [blame] | 8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | /* getopt not needed */ |
| 12 | |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 13 | #include "busybox.h" |
| 14 | |
Denis Vlasenko | 06af216 | 2007-02-03 17:28:39 +0000 | [diff] [blame] | 15 | int openvt_main(int argc, char **argv); |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 16 | int openvt_main(int argc, char **argv) |
| 17 | { |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 18 | int fd; |
Rob Landley | ead1930 | 2006-03-10 23:16:25 +0000 | [diff] [blame] | 19 | char vtname[sizeof(VC_FORMAT) + 2]; |
Glenn L McGrath | 0a3b010 | 2003-05-13 16:31:15 +0000 | [diff] [blame] | 20 | |
Rob Landley | ead1930 | 2006-03-10 23:16:25 +0000 | [diff] [blame] | 21 | if (argc < 3) { |
| 22 | bb_show_usage(); |
| 23 | } |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 24 | /* check for illegal vt number: < 1 or > 63 */ |
Denis Vlasenko | cad04ef | 2007-03-25 23:21:05 +0000 | [diff] [blame^] | 25 | sprintf(vtname, VC_FORMAT, (int)xatou_range(argv[1], 1, 63)); |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 26 | |
Denis Vlasenko | cad04ef | 2007-03-25 23:21:05 +0000 | [diff] [blame^] | 27 | //FIXME NOMMU |
Rob Landley | ead1930 | 2006-03-10 23:16:25 +0000 | [diff] [blame] | 28 | if (fork() == 0) { |
Denis Vlasenko | 9af7c9d | 2007-01-19 21:19:35 +0000 | [diff] [blame] | 29 | /* child */ |
| 30 | /* leave current vt (controlling tty) */ |
| 31 | setsid(); |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 32 | /* and grab new one */ |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 33 | fd = xopen(vtname, O_RDWR); |
Denis Vlasenko | 9af7c9d | 2007-01-19 21:19:35 +0000 | [diff] [blame] | 34 | /* Reassign stdin, stdout and sterr */ |
| 35 | dup2(fd, STDIN_FILENO); |
Rob Landley | 9f0e00f | 2005-09-08 03:27:06 +0000 | [diff] [blame] | 36 | dup2(fd, STDOUT_FILENO); |
| 37 | dup2(fd, STDERR_FILENO); |
Denis Vlasenko | 9af7c9d | 2007-01-19 21:19:35 +0000 | [diff] [blame] | 38 | while (fd > 2) close(fd--); |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 39 | |
Denis Vlasenko | 1d76f43 | 2007-02-06 01:20:12 +0000 | [diff] [blame] | 40 | BB_EXECVP(argv[2], &argv[2]); |
Glenn L McGrath | ec0c48c | 2002-09-16 03:16:06 +0000 | [diff] [blame] | 41 | _exit(1); |
| 42 | } |
| 43 | return EXIT_SUCCESS; |
| 44 | } |