main.c revision 70005 
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 70005 2000-12-14 02:49:02Z 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
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 */
105    moduleInitialize();
106
107    /* Initialize PC-card */
108    pccardInitialize();
109
110    /* Initialize USB */
111    usbInitialize();
112
113    /* Probe for all relevant devices on the system */
114    deviceGetAll();
115
116    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
117    if (!RunningAsInit) {
118	int i, start_arg;
119
120	if (!strstr(argv[0], "sysinstall"))
121	    start_arg = 0;
122	else if (Fake)
123	    start_arg = 2;
124	else
125	    start_arg = 1;
126	for (i = start_arg; i < argc; i++) {
127	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
128		systemShutdown(1);
129	}
130	if (argc > start_arg)
131	    systemShutdown(0);
132    }
133    else
134	dispatch_load_file_int(TRUE);
135
136    status = setjmp(BailOut);
137    if (status) {
138	msgConfirm("A signal %d was caught - I'm saving what I can and shutting\n"
139		   "If you can reproduce the problem, please turn Debug on in\n"
140		   "the Options menu for the extra information it provides in\n"
141		   "debugging problems like this.", status);
142	systemShutdown(status);
143    }
144
145    /* Begin user dialog at outer menu */
146    dialog_clear();
147    while (1) {
148	choice = scroll = curr = max = 0;
149	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
150	if (getpid() != 1
151#ifdef __alpha__
152	    || !msgNoYes("Are you sure you wish to exit?  The system will halt.")
153#else
154	    || !msgNoYes("Are you sure you wish to exit?  The system will reboot\n"
155		         "(be sure to remove any floppies/CDROMs from the drives).")
156#endif
157	    )
158	    break;
159    }
160
161    /* Say goodnight, Gracie */
162    systemShutdown(0);
163
164    return 0; /* We should never get here */
165}
166