main.c revision 22721 
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 22721 1997-02-14 20:59:07Z 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
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 (file_readable("/etc/sysconfig"))
75	configEnvironment("/etc/sysconfig");
76
77    if (argc > 1 && !strcmp(argv[1], "-fake")) {
78	variable_set2(VAR_DEBUG, "YES");
79	Fake = TRUE;
80	msgConfirm("I'll be just faking it from here on out, OK?");
81    }
82
83    /* Try to preserve our scroll-back buffer */
84    if (OnVTY) {
85	for (curr = 0; curr < 25; curr++)
86	    putchar('\n');
87    }
88    /* Move stderr aside */
89    if (DebugFD)
90	dup2(DebugFD, 2);
91
92    /* Probe for all relevant devices on the system */
93    deviceGetAll();
94
95    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
96    if (!RunningAsInit) {
97	int i, start_arg;
98
99	if (!strstr(argv[0], "sysinstall"))
100	    start_arg = 0;
101	else if (Fake)
102	    start_arg = 2;
103	else
104	    start_arg = 1;
105	for (i = start_arg; i < argc; i++) {
106	    if (DITEM_STATUS(dispatchCommand(argv[i])) != DITEM_SUCCESS)
107		systemShutdown(1);
108	}
109	if (argc > start_arg)
110	    systemShutdown(0);
111    }
112    else {
113	FILE *fp;
114	char buf[BUFSIZ];
115
116	fp = fopen("install.cfg", "r");
117	if (fp) {
118	    msgNotify("Loading pre-configuration file");
119	    while (fgets(buf, sizeof buf, fp)) {
120		if (DITEM_STATUS(dispatchCommand(buf)) != DITEM_SUCCESS) {
121		    msgDebug("Command `%s' failed - rest of script aborted.\n", buf);
122		    break;
123		}
124	    }
125	    fclose(fp);
126	}
127#if defined(LOAD_CONFIG_FILE)
128	else {
129	    /* If we have a compiled-in startup config file name on
130	       the floppy, look for it and try to load it on startup */
131	    extern char *distWanted;
132
133	    /* Tell mediaSetFloppy() to try floppy now */
134	    distWanted = LOAD_CONFIG_FILE;
135
136	    /* Try to open the floppy drive if we can do that first */
137	    if (DITEM_STATUS(mediaSetFloppy(NULL)) != DITEM_FAILURE && mediaDevice->init(mediaDevice)) {
138		fp = mediaDevice->get(mediaDevice, LOAD_CONFIG_FILE, TRUE);
139		if (fp) {
140		    msgNotify("Loading %s pre-configuration file", LOAD_CONFIG_FILE);
141		    while (fgets(buf, sizeof buf, fp)) {
142			if (DITEM_STATUS(dispatchCommand(buf)) != DITEM_SUCCESS) {
143			    msgDebug("Command `%s' failed - rest of script aborted.\n", buf);
144			    break;
145			}
146		    }
147		    fclose(fp);
148		}
149		mediaDevice->shutdown(mediaDevice);
150	    }
151	}
152#endif
153    }
154
155    /* Begin user dialog at outer menu */
156    dialog_clear();
157    while (1) {
158	choice = scroll = curr = max = 0;
159	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
160	if (getpid() != 1 || !msgYesNo("Are you sure you wish to exit?  The system will reboot\n"
161				       "(be sure to remove any floppies from the drives)."))
162	    break;
163    }
164
165    /* Say goodnight, Gracie */
166    systemShutdown(0);
167
168    return 0; /* We should never get here */
169}
170