main.c revision 21243 
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 1.32 1996/12/12 08:33:37 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 <sys/signal.h>
39#include <sys/fcntl.h>
40
41static void
42screech(int sig)
43{
44    printf("\007Fatal signal %d caught!  I'm dead..\n", sig);
45    if (RunningAsInit)
46	pause();
47    else
48	exit(1);
49}
50
51int
52main(int argc, char **argv)
53{
54    int choice, scroll, curr, max;
55
56    /* Catch fatal signals and complain about them if running as init */
57    if (getpid() == 1) {
58	signal(SIGBUS, screech);
59	signal(SIGSEGV, screech);
60    }
61
62    /* We don't work too well when running as non-root anymore */
63    if (geteuid() != 0) {
64	fprintf(stderr, "Error: This utility should only be run as root.\n");
65	return 1;
66    }
67
68    /* Set up whatever things need setting up */
69    systemInitialize(argc, argv);
70
71    /* Set default flag and variable values */
72    installVarDefaults(NULL);
73
74    if (argc > 1 && !strcmp(argv[1], "-fake")) {
75	variable_set2(VAR_DEBUG, "YES");
76	Fake = TRUE;
77	msgConfirm("I'll be just faking it from here on out, OK?");
78    }
79
80    /* Try to preserve our scroll-back buffer */
81    if (OnVTY) {
82	for (curr = 0; curr < 25; curr++)
83	    putchar('\n');
84	/* Move stderr aside */
85	if (DebugFD)
86	    dup2(DebugFD, 2);
87    }
88
89    /* Probe for all relevant devices on the system */
90    deviceGetAll();
91
92    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
93    if (!RunningAsInit) {
94	int i, start_arg;
95
96	/* Try to set ourselves up as a CDROM if we can do that first */
97	if (DITEM_STATUS(mediaSetCDROM(NULL)) == DITEM_SUCCESS) {
98	    /* If we can't initialize it, it's probably not a FreeBSD CDROM so punt on it */
99	    if (!mediaDevice->init(mediaDevice))
100		mediaDevice = NULL;
101	}
102
103	if (!strstr(argv[0], "sysinstall"))
104	    start_arg = 0;
105	else if (Fake)
106	    start_arg = 2;
107	else
108	    start_arg = 1;
109	for (i = start_arg; i < argc; i++) {
110	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
111		systemShutdown(1);
112	}
113	if (argc > start_arg)
114	    systemShutdown(0);
115    }
116
117    {
118	FILE *fp;
119	Attribs *attrs;
120
121	attrs = alloca(sizeof(Attribs) * MAX_ATTRIBS);
122	fp = fopen("install.cfg", "r");
123	if (fp) {
124	    msgNotify("Loading pre-configuration file");
125	    if (DITEM_STATUS(attr_parse(attrs, fp)) == DITEM_SUCCESS) {
126		int i;
127
128		for (i = 0; attrs[i].name; i++)
129		    variable_set2(attrs[i].name, attrs[i].value);
130	    }
131	    fclose(fp);
132	}
133
134#if defined(LOAD_CONFIG_FILE)
135	else {
136	    /* If we have a compiled-in startup config file name on
137	       the floppy, look for it and try to load it on startup */
138	    extern char *distWanted;
139
140	    /* Tell mediaSetFloppy() to try floppy now */
141	    distWanted = (char *)1;
142
143	    /* Try to open the floppy drive if we can do that first */
144	    if (DITEM_STATUS(mediaSetFloppy(NULL)) != DITEM_FAILURE &&
145		mediaDevice->init(mediaDevice)) {
146		int fd;
147
148		fp = mediaDevice->get(mediaDevice, LOAD_CONFIG_FILE, TRUE);
149		if (fp) {
150		    msgNotify("Loading %s pre-configuration file",
151			      LOAD_CONFIG_FILE);
152		    if (DITEM_STATUS(attr_parse(attrs, fp)) == DITEM_SUCCESS) {
153			int i;
154
155			for (i = 0; attrs[i].name; i++)
156			    variable_set2(attrs[i].name, attrs[i].value);
157		    }
158		    fclose(fp);
159		}
160		mediaDevice->shutdown(mediaDevice);
161	    }
162	}
163#endif
164    }
165
166    /* Begin user dialog at outer menu */
167    dialog_clear();
168    while (1) {
169	choice = scroll = curr = max = 0;
170	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
171	if (getpid() != 1 || !msgYesNo("Are you sure you wish to exit?  The system will reboot\n"
172				       "(be sure to remove any floppies from the drives)."))
173	    break;
174    }
175
176    /* Say goodnight, Gracie */
177    systemShutdown(0);
178
179    return 0; /* We should never get here */
180}
181