main.c revision 20331 
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 * $Id: main.c,v 1.29 1996/12/11 09:35:02 jkh Exp $
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 <stdio.h>
39#include <sys/signal.h>
40#include <sys/fcntl.h>
41
42static void
43screech(int sig)
44{
45    fprintf(stderr, "\007Fatal signal %d caught!  I'm dead..\n", sig);
46    if (RunningAsInit)
47	pause();
48    else
49	exit(1);
50}
51
52int
53main(int argc, char **argv)
54{
55    int choice, scroll, curr, max;
56
57    /* Catch fatal signals and complain about them if running as init */
58    if (getpid() == 1) {
59	signal(SIGBUS, screech);
60	signal(SIGSEGV, screech);
61    }
62
63    /* We don't work too well when running as non-root anymore */
64    if (geteuid() != 0) {
65	fprintf(stderr, "Error: This utility should only be run as root.\n");
66	return 1;
67    }
68
69    /* Set up whatever things need setting up */
70    systemInitialize(argc, argv);
71
72    /* Set default flag and variable values */
73    installVarDefaults(NULL);
74
75    if (argc > 1 && !strcmp(argv[1], "-fake")) {
76	variable_set2(VAR_DEBUG, "YES");
77	Fake = TRUE;
78	msgConfirm("I'll be just faking it from here on out, OK?");
79    }
80
81    /* Try to preserve our scroll-back buffer */
82    if (OnVTY)
83	for (curr = 0; curr < 25; curr++)
84	    putchar('\n');
85
86    /* Probe for all relevant devices on the system */
87    deviceGetAll();
88
89    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
90    if (!RunningAsInit) {
91	int i, start_arg;
92
93	/* Try to set ourselves up as a CDROM if we can do that first */
94	if (DITEM_STATUS(mediaSetCDROM(NULL)) == DITEM_SUCCESS) {
95	    /* If we can't initialize it, it's probably not a FreeBSD CDROM so punt on it */
96	    if (!mediaDevice->init(mediaDevice))
97		mediaDevice = NULL;
98	}
99
100	if (!strstr(argv[0], "sysinstall"))
101	    start_arg = 0;
102	else if (Fake)
103	    start_arg = 2;
104	else
105	    start_arg = 1;
106	for (i = start_arg; i < argc; i++) {
107	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
108		systemShutdown(1);
109	}
110	if (argc > start_arg)
111	    systemShutdown(0);
112    }
113
114    {
115	FILE *fp;
116	Attribs *attrs;
117
118	attrs = safe_malloc(sizeof(Attribs) * MAX_ATTRIBS);
119	fp = fopen("install.cfg", "r");
120	if (fp) {
121	    msgNotify("Loading pre-configuration file");
122	    if (DITEM_STATUS(attr_parse(attrs, fp)) == DITEM_SUCCESS) {
123		int i;
124
125		for (i = 0; attrs[i].name; i++)
126		    variable_set2(attrs[i].name, attrs[i].value);
127	    }
128	    fclose(fp);
129	    attr_free(attrs);
130	}
131
132#if defined(LOAD_CONFIG_FILE)
133	else {
134	    /* If we have a compiled-in startup config file name on
135	       the floppy, look for it and try to load it on startup */
136	    extern char *distWanted;
137
138	    /* Tell mediaSetFloppy() to try floppy now */
139	    distWanted = (char *)1;
140
141	    /* Try to open the floppy drive if we can do that first */
142	    if (DITEM_STATUS(mediaSetFloppy(NULL)) != DITEM_FAILURE &&
143		mediaDevice->init(mediaDevice)) {
144		int fd;
145
146		fp = mediaDevice->get(mediaDevice, LOAD_CONFIG_FILE, TRUE);
147		if (fp) {
148		    msgNotify("Loading %s pre-configuration file",
149			      LOAD_CONFIG_FILE);
150		    if (DITEM_STATUS(attr_parse(attrs, fp)) == DITEM_SUCCESS) {
151			int i;
152
153			for (i = 0; attrs[i].name; i++)
154			    variable_set2(attrs[i].name, attrs[i].value);
155		    }
156		    fclose(fp);
157		    attr_free(attrs);
158		}
159		mediaDevice->shutdown(mediaDevice);
160	    }
161	}
162#endif
163    }
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 || !msgYesNo("Are you sure you wish to exit?  The system will reboot\n"
171				       "(be sure to remove any floppies from the drives)."))
172	    break;
173    }
174
175    /* Say goodnight, Gracie */
176    systemShutdown(0);
177
178    return 0; /* We should never get here */
179}
180