main.c revision 83880 
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 83880 2001-09-24 10:16:23Z murray $
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
95    /* Try to preserve our scroll-back buffer */
96    if (OnVTY) {
97	for (curr = 0; curr < 25; curr++)
98	    putchar('\n');
99    }
100    /* Move stderr aside */
101    if (DebugFD)
102	dup2(DebugFD, 2);
103
104    /* Initialize driver modules, if we haven't already done so (ie,
105       the user hit Ctrl-C -> Restart. */
106    if (!pvariable_get("modulesInitialize")) {
107	moduleInitialize();
108	pvariable_set("modulesInitialize=1");
109    }
110
111    /* Initialize PC-card, if we haven't already done so. */
112    if (!pvariable_get("pccardInitialize")) {
113	pccardInitialize();
114	pvariable_set("pccardInitialize=1");
115    }
116
117    /* Initialize USB, if we haven't already done so. */
118    if (!pvariable_get("usbInitialize")) {
119	usbInitialize();
120	pvariable_set("usbInitialize=1");
121    }
122
123    /* Probe for all relevant devices on the system */
124    deviceGetAll();
125
126    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
127    if (!RunningAsInit) {
128	int i, start_arg;
129
130	if (!strstr(argv[0], "sysinstall"))
131	    start_arg = 0;
132	else if (Fake)
133	    start_arg = 2;
134	else
135	    start_arg = 1;
136	for (i = start_arg; i < argc; i++) {
137	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
138		systemShutdown(1);
139	}
140	if (argc > start_arg)
141	    systemShutdown(0);
142    }
143    else
144	dispatch_load_file_int(TRUE);
145
146    status = setjmp(BailOut);
147    if (status) {
148	msgConfirm("A signal %d was caught - I'm saving what I can and shutting\n"
149		   "down.  If you can reproduce the problem, please turn Debug on\n"
150		   "in the Options menu for the extra information it provides\n"
151		   "in debugging problems like this.", status);
152	systemShutdown(status);
153    }
154
155    /* Begin user dialog at outer menu */
156    dialog_clear();
157    while (1) {
158	choice = scroll = curr = max = 0;
159	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
160	if (getpid() != 1
161#ifdef __alpha__
162	    || !msgNoYes("Are you sure you wish to exit?  The system will halt.")
163#else
164	    || !msgNoYes("Are you sure you wish to exit?  The system will reboot\n"
165		         "(be sure to remove any floppies/CDs/DVDs from the drives).")
166#endif
167	    )
168	    break;
169    }
170
171    /* Say goodnight, Gracie */
172    systemShutdown(0);
173
174    return 0; /* We should never get here */
175}
176