main.c revision 161059 
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 156118 2006-02-28 20:29:43Z jhb $
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 (!variable_cmp(VAR_SKIP_PCCARD, "YES") &&
116      variable_get(VAR_SKIP_PCCARD)!=1 &&
117       !pvariable_get("pccardInitialize")) {
118	pccardInitialize();
119	pvariable_set("pccardInitialize=1");
120    }
121#endif
122
123    /* Probe for all relevant devices on the system */
124    deviceGetAll();
125
126    /* Prompt for the driver floppy if appropriate. */
127    if (!pvariable_get("driverFloppyCheck")) {
128	driverFloppyCheck();
129	pvariable_set("driverFloppyCheck=1");
130    }
131
132    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
133    if (!RunningAsInit) {
134	int i, start_arg;
135
136	if (!strstr(argv[0], "sysinstall"))
137	    start_arg = 0;
138	else if (Fake || Restarting)
139	    start_arg = 2;
140	else
141	    start_arg = 1;
142	for (i = start_arg; i < argc; i++) {
143	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
144		systemShutdown(1);
145	}
146	if (argc > start_arg)
147	    systemShutdown(0);
148    }
149    else
150	dispatch_load_file_int(TRUE);
151
152    status = setjmp(BailOut);
153    if (status) {
154	msgConfirm("A signal %d was caught - I'm saving what I can and shutting\n"
155		   "down.  If you can reproduce the problem, please turn Debug on\n"
156		   "in the Options menu for the extra information it provides\n"
157		   "in debugging problems like this.", status);
158	systemShutdown(status);
159    }
160
161    /* Get user's country and keymap */
162    if (RunningAsInit)
163	configCountry(NULL);
164
165    /* Begin user dialog at outer menu */
166    dialog_clear();
167    while (1) {
168	choice = scroll = curr = max = 0;
169	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
170	if (getpid() != 1
171#if defined(__alpha__) || defined(__sparc64__)
172	    || !msgNoYes("Are you sure you wish to exit?  The system will halt.")
173#else
174	    || !msgNoYes("Are you sure you wish to exit?  The system will reboot\n"
175		         "(be sure to remove any floppies/CDs/DVDs from the drives).")
176#endif
177	    )
178	    break;
179    }
180
181    /* Say goodnight, Gracie */
182    systemShutdown(0);
183
184    return 0; /* We should never get here */
185}
186