main.c revision 15439 
1/*
2 * The new sysinstall program.
3 *
4 * This is probably the last attempt in the `sysinstall' line, the next
5 * generation being slated for what's essentially a complete rewrite.
6 *
7 * $Id: main.c,v 1.17 1996/04/13 13:31:51 jkh Exp $
8 *
9 * Copyright (c) 1995
10 *	Jordan Hubbard.  All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer,
17 *    verbatim and that no modifications are made prior to this
18 *    point in the file.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in the
21 *    documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 */
36
37#include "sysinstall.h"
38#include <stdio.h>
39#include <sys/signal.h>
40
41static void
42screech(int sig)
43{
44    fprintf(stderr, "\007Fatal signal %d caught!  I'm dead..\n", sig);
45    pause();
46}
47
48int
49main(int argc, char **argv)
50{
51    int choice, scroll, curr, max;
52
53    /* Catch fatal signals and complain about them if running as init */
54    if (getpid() == 1) {
55	signal(SIGBUS, screech);
56	signal(SIGSEGV, screech);
57    }
58
59    /* We don't work too well when running as non-root anymore */
60    if (geteuid() != 0) {
61	fprintf(stderr, "Error: This utility should only be run as root.\n");
62	return 1;
63    }
64
65    /* Set up whatever things need setting up */
66    systemInitialize(argc, argv);
67
68    /* Set default flag and variable values */
69    installVarDefaults(NULL);
70
71    if (argc > 1 && !strcmp(argv[1], "-fake")) {
72	variable_set2(VAR_DEBUG, "YES");
73	Fake = TRUE;
74	msgConfirm("I'll be just faking it from here on out, OK?");
75    }
76
77    /* Try to preserve our scroll-back buffer */
78    if (OnVTY)
79	for (curr = 0; curr < 25; curr++)
80	    putchar('\n');
81
82    /* Probe for all relevant devices on the system */
83    deviceGetAll();
84
85    /* Begin user dialog at outer menu */
86    while (1) {
87	choice = scroll = curr = max = 0;
88	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max);
89	if (getpid() != 1 || !msgYesNo("Are you sure you wish to exit?  The system will reboot\n"
90				       "(be sure to remove any floppies from the drives)."))
91	    break;
92    }
93
94    /* Say goodnight, Gracie */
95    systemShutdown();
96
97    /* If we're running as init, we should never get here */
98    return 0;
99}
100