main.c revision 93401 
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 93401 2002-03-29 23:03:17Z 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    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#ifdef PCCARD_ARCH
115    if (!pvariable_get("pccardInitialize")) {
116	pccardInitialize();
117	pvariable_set("pccardInitialize=1");
118    }
119#endif
120
121    /* Initialize USB, if we haven't already done so. */
122    if (!pvariable_get("usbInitialize")) {
123	usbInitialize();
124	pvariable_set("usbInitialize=1");
125    }
126
127    /* Probe for all relevant devices on the system */
128    deviceGetAll();
129
130    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
131    if (!RunningAsInit) {
132	int i, start_arg;
133
134	if (!strstr(argv[0], "sysinstall"))
135	    start_arg = 0;
136	else if (Fake || Restarting)
137	    start_arg = 2;
138	else
139	    start_arg = 1;
140	for (i = start_arg; i < argc; i++) {
141	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
142		systemShutdown(1);
143	}
144	if (argc > start_arg)
145	    systemShutdown(0);
146    }
147    else
148	dispatch_load_file_int(TRUE);
149
150    status = setjmp(BailOut);
151    if (status) {
152	msgConfirm("A signal %d was caught - I'm saving what I can and shutting\n"
153		   "down.  If you can reproduce the problem, please turn Debug on\n"
154		   "in the Options menu for the extra information it provides\n"
155		   "in debugging problems like this.", status);
156	systemShutdown(status);
157    }
158
159    /* Begin user dialog at outer menu */
160    dialog_clear();
161    while (1) {
162	choice = scroll = curr = max = 0;
163	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
164	if (getpid() != 1
165#ifdef __alpha__
166	    || !msgNoYes("Are you sure you wish to exit?  The system will halt.")
167#else
168	    || !msgNoYes("Are you sure you wish to exit?  The system will reboot\n"
169		         "(be sure to remove any floppies/CDs/DVDs from the drives).")
170#endif
171	    )
172	    break;
173    }
174
175    /* Say goodnight, Gracie */
176    systemShutdown(0);
177
178    return 0; /* We should never get here */
179}
180