/* vi: set sw=4 ts=4: */ /* * openvt.c - open a vt to run a command. * * busyboxed by Quy Tonthat <quy@signal3.com> * hacked by Tito <farmatito@tiscali.it> * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ /* getopt not needed */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <string.h> #include <sys/types.h> #include <ctype.h> #include "busybox.h" int openvt_main(int argc, char **argv) { int fd; char vtname[sizeof(VC_FORMAT) + 2]; if (argc < 3) { bb_show_usage(); } /* check for Illegal vt number: < 1 or > 12 */ sprintf(vtname, VC_FORMAT, (int)bb_xgetlarg(argv[1], 10, 1, 12)); if (fork() == 0) { /* leave current vt */ if (setsid() < 0) { bb_perror_msg_and_die("setsid"); } close(0); /* so that new vt becomes stdin */ /* and grab new one */ fd = xopen(vtname, O_RDWR); /* Reassign stdout and sterr */ dup2(fd, STDOUT_FILENO); dup2(fd, STDERR_FILENO); execvp(argv[2], &argv[2]); _exit(1); } return EXIT_SUCCESS; }