main.c revision 84831 
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 * $FreeBSD: head/usr.sbin/sade/main.c 84831 2001-10-12 07:36:34Z jkh $
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 <sys/signal.h>
39#include <sys/fcntl.h>
40
41const char *StartName;		/* Initial contents of argv[0] */
42
43static void
44screech(int sig)
45{
46    msgDebug("\007Signal %d caught!  That's bad!\n", sig);
47    longjmp(BailOut, sig);
48}
49
50int
51main(int argc, char **argv)
52{
53    int choice, scroll, curr, max, status;
54
55    /* Record name to be able to restart */
56    StartName = argv[0];
57
58    /* Catch fatal signals and complain about them if running as init */
59    if (getpid() == 1) {
60	signal(SIGBUS, screech);
61	signal(SIGSEGV, screech);
62    }
63    signal(SIGPIPE, SIG_IGN);
64
65    /* We don't work too well when running as non-root anymore */
66    if (geteuid() != 0) {
67	fprintf(stderr, "Error: This utility should only be run as root.\n");
68	return 1;
69    }
70
71#ifdef PC98
72    {
73	/* XXX */
74	char *p = getenv("TERM");
75	if (p && strcmp(p, "cons25") == 0)
76	    putenv("TERM=cons25w");
77    }
78#endif
79
80    /* Set up whatever things need setting up */
81    systemInitialize(argc, argv);
82
83    /* Set default flag and variable values */
84    installVarDefaults(NULL);
85    /* only when multi-user is it reasonable to do this here */
86    if (!RunningAsInit)
87	installEnvironment();
88
89    if (argc > 1 && !strcmp(argv[1], "-fake")) {
90	variable_set2(VAR_DEBUG, "YES", 0);
91	Fake = TRUE;
92	msgConfirm("I'll be just faking it from here on out, OK?");
93    }
94    if (argc > 1 && !strcmp(argv[1], "-restart"))
95	Restarting = TRUE;
96
97    /* Try to preserve our scroll-back buffer */
98    if (OnVTY) {
99	for (curr = 0; curr < 25; curr++)
100	    putchar('\n');
101    }
102    /* Move stderr aside */
103    if (DebugFD)
104	dup2(DebugFD, 2);
105
106    /* Initialize driver modules, if we haven't already done so (ie,
107       the user hit Ctrl-C -> Restart. */
108    if (!pvariable_get("modulesInitialize")) {
109	moduleInitialize();
110	pvariable_set("modulesInitialize=1");
111    }
112
113    /* Initialize PC-card, if we haven't already done so. */
114    if (!pvariable_get("pccardInitialize")) {
115	pccardInitialize();
116	pvariable_set("pccardInitialize=1");
117    }
118
119    /* Initialize USB, if we haven't already done so. */
120    if (!pvariable_get("usbInitialize")) {
121	usbInitialize();
122	pvariable_set("usbInitialize=1");
123    }
124
125    /* Probe for all relevant devices on the system */
126    deviceGetAll();
127
128    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
129    if (!RunningAsInit) {
130	int i, start_arg;
131
132	if (!strstr(argv[0], "sysinstall"))
133	    start_arg = 0;
134	else if (Fake || Restarting)
135	    start_arg = 2;
136	else
137	    start_arg = 1;
138	for (i = start_arg; i < argc; i++) {
139	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
140		systemShutdown(1);
141	}
142	if (argc > start_arg)
143	    systemShutdown(0);
144    }
145    else
146	dispatch_load_file_int(TRUE);
147
148    status = setjmp(BailOut);
149    if (status) {
150	msgConfirm("A signal %d was caught - I'm saving what I can and shutting\n"
151		   "down.  If you can reproduce the problem, please turn Debug on\n"
152		   "in the Options menu for the extra information it provides\n"
153		   "in debugging problems like this.", status);
154	systemShutdown(status);
155    }
156
157    /* Begin user dialog at outer menu */
158    dialog_clear();
159    while (1) {
160	choice = scroll = curr = max = 0;
161	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
162	if (getpid() != 1
163#ifdef __alpha__
164	    || !msgNoYes("Are you sure you wish to exit?  The system will halt.")
165#else
166	    || !msgNoYes("Are you sure you wish to exit?  The system will reboot\n"
167		         "(be sure to remove any floppies/CDs/DVDs from the drives).")
168#endif
169	    )
170	    break;
171    }
172
173    /* Say goodnight, Gracie */
174    systemShutdown(0);
175
176    return 0; /* We should never get here */
177}
178