main.c revision 18310 
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 1.26 1996/09/08 01:39:24 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
41static void
42screech(int sig)
43{
44    fprintf(stderr, "\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
85    /* Probe for all relevant devices on the system */
86    deviceGetAll();
87
88    /* First, see if we have any arguments to process (and argv[0] counts if it's not "sysinstall") */
89    if (!RunningAsInit) {
90	int i, start_arg;
91
92	/* Try to set ourselves up as a CDROM if we can do that first */
93	if (DITEM_STATUS(mediaSetCDROM(NULL)) == DITEM_SUCCESS) {
94	    /* If we can't initialize it, it's probably not a FreeBSD CDROM so punt on it */
95	    if (!mediaDevice->init(mediaDevice))
96		mediaDevice = NULL;
97	}
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
113/* If we have a compiled-in startup config file name, look for it and try to load it on startup */
114#if defined(LOAD_CONFIG_FILE)
115    else {
116	extern char *distWanted;
117
118	distWanted = (char *)1;	/* Tell mediaSetFloppy() to try floppy now */
119	/* Try to open the floppy drive if we can do that first */
120	if (DITEM_STATUS(mediaSetFloppy(NULL)) != DITEM_FAILURE && mediaDevice->init(mediaDevice)) {
121	    int fd;
122
123	    fd = mediaDevice->get(mediaDevice, LOAD_CONFIG_FILE, TRUE);
124	    if (fd > 0) {
125		Attribs attrs[512];	/* Don't have more than this many attrs in one file, ok? :-) */
126
127		msgNotify("Loading %s pre-configuration file", LOAD_CONFIG_FILE);
128		if (DITEM_STATUS(attr_parse(attrs, fd)) == DITEM_SUCCESS) {
129		    int i;
130
131		    for (i = 0; attrs[i].name; i++)
132			variable_set2(attrs[i].name, attrs[i].value);
133		}
134		mediaDevice->close(mediaDevice, fd);
135	    }
136	    mediaDevice->shutdown(mediaDevice);
137	}
138    }
139#endif
140
141    /* Begin user dialog at outer menu */
142    dialog_clear();
143    while (1) {
144	choice = scroll = curr = max = 0;
145	dmenuOpen(&MenuInitial, &choice, &scroll, &curr, &max, TRUE);
146	if (getpid() != 1 || !msgYesNo("Are you sure you wish to exit?  The system will reboot\n"
147				       "(be sure to remove any floppies from the drives)."))
148	    break;
149    }
150
151    /* Say goodnight, Gracie */
152    systemShutdown(0);
153
154    return 0; /* We should never get here */
155}
156