496 lines
19 KiB
C
496 lines
19 KiB
C
/*
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* The new sysinstall program.
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*
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* This is probably the last program in the `sysinstall' line - the next
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* generation being essentially a complete rewrite.
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*
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* $Id: installUpgrade.c,v 1.53 1997/10/12 16:21:15 jkh Exp $
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* verbatim and that no modifications are made prior to this
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* point in the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include "sysinstall.h"
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#include <sys/disklabel.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/fcntl.h>
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#include <sys/wait.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <sys/mount.h>
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static int installUpgradeNonInteractive(dialogMenuItem *self);
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typedef struct _hitList {
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enum { JUST_COPY, CALL_HANDLER } action ;
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char *name;
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Boolean optional;
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void (*handler)(struct _hitList *self);
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} HitList;
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/* These are the only meaningful files I know about */
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static HitList etc_files [] = {
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{ JUST_COPY, "Xaccel.ini", TRUE, NULL },
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{ JUST_COPY, "adduser.conf", TRUE, NULL },
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{ JUST_COPY, "aliases", TRUE, NULL },
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{ JUST_COPY, "aliases.db", TRUE, NULL },
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{ JUST_COPY, "amd.map", TRUE, NULL },
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{ JUST_COPY, "crontab", TRUE, NULL },
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{ JUST_COPY, "csh.cshrc", TRUE, NULL },
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{ JUST_COPY, "csh.login", TRUE, NULL },
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{ JUST_COPY, "csh.logout", TRUE, NULL },
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{ JUST_COPY, "daily", TRUE, NULL },
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{ JUST_COPY, "disktab", TRUE, NULL },
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{ JUST_COPY, "dm.conf", TRUE, NULL },
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{ JUST_COPY, "exports", TRUE, NULL },
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{ JUST_COPY, "fbtab", TRUE, NULL },
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{ JUST_COPY, "fstab", FALSE, NULL },
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{ JUST_COPY, "ftpusers", TRUE, NULL },
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{ JUST_COPY, "gettytab", TRUE, NULL },
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{ JUST_COPY, "gnats", TRUE, NULL },
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{ JUST_COPY, "group", FALSE, NULL },
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{ JUST_COPY, "host.conf", TRUE, NULL },
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{ JUST_COPY, "hosts", TRUE, NULL },
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{ JUST_COPY, "hosts.equiv", TRUE, NULL },
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{ JUST_COPY, "hosts.lpd", TRUE, NULL },
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{ JUST_COPY, "inetd.conf", TRUE, NULL },
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{ JUST_COPY, "kerberosIV", TRUE, NULL },
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{ JUST_COPY, "localtime", TRUE, NULL },
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{ JUST_COPY, "login.access", TRUE, NULL },
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{ JUST_COPY, "mail.rc", TRUE, NULL },
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{ JUST_COPY, "make.conf", TRUE, NULL },
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{ JUST_COPY, "manpath.config", TRUE, NULL },
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{ JUST_COPY, "master.passwd", TRUE, NULL },
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{ JUST_COPY, "mib.txt", TRUE, NULL },
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{ JUST_COPY, "modems", TRUE, NULL },
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{ JUST_COPY, "monthly", TRUE, NULL },
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{ JUST_COPY, "motd", TRUE, NULL },
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{ JUST_COPY, "namedb", TRUE, NULL },
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{ JUST_COPY, "networks", TRUE, NULL },
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{ JUST_COPY, "passwd", FALSE, NULL },
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{ JUST_COPY, "phones", TRUE, NULL },
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{ JUST_COPY, "ppp", TRUE, NULL },
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{ JUST_COPY, "printcap", TRUE, NULL },
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{ JUST_COPY, "profile", TRUE, NULL },
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{ JUST_COPY, "protocols", TRUE, NULL },
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{ JUST_COPY, "pwd.db", TRUE, NULL },
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{ JUST_COPY, "rc.local", TRUE, NULL },
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{ JUST_COPY, "rc.conf", FALSE, NULL },
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{ JUST_COPY, "remote", TRUE, NULL },
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{ JUST_COPY, "resolv.conf", TRUE, NULL },
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{ JUST_COPY, "rmt", TRUE, NULL },
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{ JUST_COPY, "security", TRUE, NULL },
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{ JUST_COPY, "sendmail.cf", TRUE, NULL },
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{ JUST_COPY, "services", TRUE, NULL },
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{ JUST_COPY, "shells", TRUE, NULL },
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{ JUST_COPY, "skeykeys", TRUE, NULL },
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{ JUST_COPY, "spwd.db", TRUE, NULL },
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{ JUST_COPY, "supfile", TRUE, NULL },
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{ JUST_COPY, "syslog.conf", TRUE, NULL },
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{ JUST_COPY, "termcap", TRUE, NULL },
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{ JUST_COPY, "ttys", TRUE, NULL },
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{ JUST_COPY, "uucp", TRUE, NULL },
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{ JUST_COPY, "weekly", TRUE, NULL },
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{ 0 },
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};
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void
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traverseHitlist(HitList *h)
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{
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system("rm -rf /etc/upgrade");
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Mkdir("/etc/upgrade");
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while (h->name) {
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if (!file_readable(h->name)) {
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if (!h->optional)
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msgConfirm("Unable to find an old /etc/%s file! That is decidedly non-standard and\n"
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"your upgraded system may function a little strangely as a result.", h->name);
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}
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else {
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if (h->action == JUST_COPY) {
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/* Move the just-loaded copy aside */
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vsystem("mv /etc/%s /etc/upgrade/%s", h->name, h->name);
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/* Copy the old one into its place */
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msgNotify("Resurrecting %s..", h->name);
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/* Do this with tar so that symlinks and such are preserved */
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if (vsystem("tar cf - %s | tar xpf - -C /etc", h->name))
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msgConfirm("Unable to resurrect your old /etc/%s! Hmmmm.", h->name);
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}
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else /* call handler */
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h->handler(h);
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}
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++h;
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}
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}
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int
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installUpgrade(dialogMenuItem *self)
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{
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char saved_etc[FILENAME_MAX];
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Boolean extractingBin = TRUE;
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if (variable_get(VAR_NONINTERACTIVE))
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return installUpgradeNonInteractive(self);
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variable_set2(SYSTEM_STATE, "upgrade");
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systemDisplayHelp("upgrade");
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dialog_clear_norefresh();
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if (msgYesNo("Given all that scary stuff you just read, are you sure you want to\n"
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"risk it all and proceed with this upgrade?") != 0)
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return DITEM_FAILURE | DITEM_RESTORE;
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if (!Dists) {
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msgConfirm("First, you must select some distribution components. The upgrade procedure\n"
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"will only upgrade the distributions you select in the next set of menus.");
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if (!dmenuOpenSimple(&MenuDistributions, FALSE) || !Dists)
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return DITEM_FAILURE | DITEM_RESTORE;
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dialog_clear_norefresh();
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}
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else if (!(Dists & DIST_BIN)) { /* No bin selected? Not much of an upgrade.. */
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if (msgYesNo("You didn't select the bin distribution as one of the distributons to load.\n"
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"This one is pretty vital to a successful upgrade. Are you SURE you don't\n"
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"want to select the bin distribution? Chose No to bring up the Distributions\n"
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"menu again.") != 0) {
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if (!dmenuOpenSimple(&MenuDistributions, FALSE))
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return DITEM_FAILURE | DITEM_RESTORE;
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dialog_clear_norefresh();
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}
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}
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/* Still?! OK! They must know what they're doing.. */
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if (!(Dists & DIST_BIN))
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extractingBin = FALSE;
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if (RunningAsInit) {
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Device **devs;
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int i, cnt;
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char *cp;
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cp = variable_get(VAR_DISK);
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devs = deviceFind(cp, DEVICE_TYPE_DISK);
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cnt = deviceCount(devs);
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if (!cnt) {
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msgConfirm("No disks found! Please verify that your disk controller is being\n"
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"properly probed at boot time. See the Hardware Guide on the\n"
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"Documentation menu for clues on diagnosing this type of problem.");
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return DITEM_FAILURE;
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}
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else {
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/* Enable all the drives befor we start */
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for (i = 0; i < cnt; i++)
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devs[i]->enabled = TRUE;
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}
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msgConfirm("OK. First, we're going to go to the disk label editor. In this editor\n"
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"you will be expected to Mount any partitions you're interested in\n"
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"upgrading. DO NOT set the Newfs flag to Y on anything in the label editor\n"
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"unless you're absolutely sure you know what you're doing! In this\n"
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"instance, you'll be using the label editor as little more than a fancy\n"
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"screen-oriented partition mounting tool.\n\n"
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"Once you're done in the label editor, press Q to return here for the next\n"
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"step.");
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if (DITEM_STATUS(diskLabelEditor(self)) == DITEM_FAILURE) {
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msgConfirm("The disk label editor returned an error status. Upgrade operation\n"
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"aborted.");
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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/* Don't write out MBR info */
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variable_set2(DISK_PARTITIONED, "written");
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if (DITEM_STATUS(diskLabelCommit(self)) == DITEM_FAILURE) {
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msgConfirm("Not all file systems were properly mounted. Upgrade operation\n"
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"aborted.");
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variable_unset(DISK_PARTITIONED);
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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msgNotify("Updating /stand on root filesystem");
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(void)vsystem("find -x /stand | cpio %s -pdum /mnt", cpioVerbosity());
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if (DITEM_STATUS(chroot("/mnt")) == DITEM_FAILURE) {
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msgConfirm("Unable to chroot to /mnt - something is wrong with the\n"
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"root partition or the way it's mounted if this doesn't work.");
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variable_unset(DISK_PARTITIONED);
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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chdir("/");
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systemCreateHoloshell();
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}
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saved_etc[0] = '\0';
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if (extractingBin) {
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while (!*saved_etc) {
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char *cp = msgGetInput("/usr/tmp/etc", "Under which directory do you wish to save your current /etc?");
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if (!cp || !*cp || Mkdir(cp)) {
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if (msgYesNo("Directory was not specified, was invalid or user selected Cancel.\n\n"
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"Doing an upgrade without first backing up your /etc directory is a very\n"
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"bad idea! Do you want to go back and specify the save directory again?") != 0)
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break;
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}
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else {
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SAFE_STRCPY(saved_etc, cp);
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}
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}
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if (saved_etc[0]) {
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msgNotify("Preserving /etc directory..");
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if (vsystem("tar -cBpf - -C /etc . | tar --unlink -xBpf - -C %s", saved_etc))
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if (msgYesNo("Unable to backup your /etc into %s.\n"
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"Do you want to continue anyway?", saved_etc) != 0)
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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msgNotify("chflags'ing old binaries - please wait.");
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(void)vsystem("chflags -R noschg /bin /sbin /usr/sbin /usr/bin /kernel*");
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if (file_readable("/kernel")) {
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msgNotify("Moving old kernel to /kernel.prev");
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if (system("chflags noschg /kernel && mv /kernel /kernel.prev")) {
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if (!msgYesNo("Hmmm! I couldn't move the old kernel over! Do you want to\n"
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"treat this as a big problem and abort the upgrade? Due to the\n"
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"way that this upgrade process works, you will have to reboot\n"
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"and start over from the beginning. Select Yes to reboot now"))
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systemShutdown(1);
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}
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else /* Give us a working kernel in case we crash and reboot */
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system("cp /kernel.prev /kernel");
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}
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}
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media:
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/* We do this very late, but we unfortunately need to back up /etc first */
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if (!mediaVerify())
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return DITEM_FAILURE | DITEM_RESTORE;
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if (!mediaDevice->init(mediaDevice)) {
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if (!msgYesNo("Couldn't initialize the media. Would you like\n"
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"to adjust your media selection and try again?")) {
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mediaDevice = NULL;
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goto media;
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}
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else
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return DITEM_FAILURE | DITEM_REDRAW;
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}
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msgNotify("Beginning extraction of distributions..");
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if (DITEM_STATUS(distExtractAll(self)) == DITEM_FAILURE) {
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msgConfirm("Hmmmm. We couldn't even extract the bin distribution. This upgrade\n"
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"should be considered a failure and started from the beginning, sorry!\n"
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"The system will reboot now.");
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dialog_clear();
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systemShutdown(1);
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}
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else if (Dists) {
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if (!extractingBin || !(Dists & DIST_BIN)) {
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msgNotify("The extraction process seems to have had some problems, but we got most\n"
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"of the essentials. We'll treat this as a warning since it may have been\n"
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"only non-essential distributions which failed to load.");
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}
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else {
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msgConfirm("Hmmmm. We couldn't even extract the bin distribution. This upgrade\n"
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"should be considered a failure and started from the beginning, sorry!\n"
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"The system will reboot now.");
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dialog_clear();
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systemShutdown(1);
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}
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}
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if (extractingBin) {
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msgNotify("OK, now it's time to go pound on your root a little bit to create all the\n"
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"/dev entries and such that a new system expects to see. I'll also perform a\n"
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"few \"fixup\" operations to repair the effects of splatting a bin distribution\n"
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"on top of an existing system..");
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if (DITEM_STATUS(installFixup(self)) == DITEM_FAILURE) {
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msgConfirm("Hmmmmm. The fixups don't seem to have been very happy.\n"
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"You may wish to examine the system a little more closely when\n"
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"it comes time to merge your /etc customizations back.");
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}
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}
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msgNotify("First stage of upgrade completed successfully!\n\n"
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"Next comes stage 2, where we attempt to resurrect your /etc\n"
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"directory!");
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if (saved_etc && chdir(saved_etc)) {
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msgConfirm("Unable to go to your saved /etc directory in %s?! Argh!\n"
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"Something went seriously wrong! It's quite possible that\n"
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"your former /etc is toast. I hope you didn't have any\n"
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"important customizations you wanted to keep in there.. :(", saved_etc);
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}
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else {
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/* Now try to resurrect the /etc files */
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traverseHitlist(etc_files);
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}
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msgConfirm("OK! At this stage, we've resurrected all the /etc files\n"
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"and moved each new copy over to /etc/upgrade/<file> in case you want\n"
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"to see what the new versions look like. If you want to wander over\n"
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"to the Emergency Holographic Shell [ALT-F4] at this point to do\n"
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"that, now would be a good time. When you're ready to reboot into\n"
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"the new system, just exit the installation.");
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return DITEM_SUCCESS | DITEM_REDRAW;
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}
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static int
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installUpgradeNonInteractive(dialogMenuItem *self)
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{
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char *saved_etc;
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Boolean extractingBin = TRUE;
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variable_set2(SYSTEM_STATE, "upgrade");
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/* Make sure at least BIN is selected */
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Dists |= DIST_BIN;
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if (RunningAsInit) {
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Device **devs;
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int i, cnt;
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char *cp;
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cp = variable_get(VAR_DISK);
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devs = deviceFind(cp, DEVICE_TYPE_DISK);
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cnt = deviceCount(devs);
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if (!cnt) {
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msgConfirm("No disks found! Please verify that your disk controller is being\n"
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"properly probed at boot time. See the Hardware Guide on the\n"
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"Documentation menu for clues on diagnosing this type of problem.");
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return DITEM_FAILURE;
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}
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else {
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/* Enable all the drives befor we start */
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for (i = 0; i < cnt; i++)
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devs[i]->enabled = TRUE;
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}
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msgConfirm("OK. First, we're going to go to the disk label editor. In this editor\n"
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"you will be expected to Mount any partitions you're interested in\n"
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"upgrading. DO NOT set the Newfs flag to Y on anything in the label editor\n"
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"unless you're absolutely sure you know what you're doing! In this\n"
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"instance, you'll be using the label editor as little more than a fancy\n"
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"screen-oriented partition mounting tool.\n\n"
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"Once you're done in the label editor, press Q to return here for the next\n"
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"step.");
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if (DITEM_STATUS(diskLabelEditor(self)) == DITEM_FAILURE) {
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msgConfirm("The disk label editor returned an error status. Upgrade operation\n"
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"aborted.");
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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/* Don't write out MBR info */
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variable_set2(DISK_PARTITIONED, "written");
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if (DITEM_STATUS(diskLabelCommit(self)) == DITEM_FAILURE) {
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msgConfirm("Not all file systems were properly mounted. Upgrade operation\n"
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"aborted.");
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variable_unset(DISK_PARTITIONED);
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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if (extractingBin) {
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msgNotify("chflags'ing old binaries - please wait.");
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(void)vsystem("chflags -R noschg /mnt/");
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}
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msgNotify("Updating /stand on root filesystem");
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(void)vsystem("find -x /stand | cpio %s -pdum /mnt", cpioVerbosity());
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if (DITEM_STATUS(chroot("/mnt")) == DITEM_FAILURE) {
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msgConfirm("Unable to chroot to /mnt - something is wrong with the\n"
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"root partition or the way it's mounted if this doesn't work.");
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variable_unset(DISK_PARTITIONED);
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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chdir("/");
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systemCreateHoloshell();
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}
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if (!mediaVerify() || !mediaDevice->init(mediaDevice)) {
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msgNotify("Upgrade: Couldn't initialize media.");
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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saved_etc = "/usr/tmp/etc";
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Mkdir(saved_etc);
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msgNotify("Preserving /etc directory..");
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if (vsystem("tar -cpBf - -C /etc . | tar -xpBf - -C %s", saved_etc)) {
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msgNotify("Unable to backup your /etc into %s.", saved_etc);
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return DITEM_FAILURE | DITEM_RESTORE;
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}
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if (file_readable("/kernel")) {
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msgNotify("Moving old kernel to /kernel.prev");
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if (!system("chflags noschg /kernel && mv /kernel /kernel.prev")) {
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/* Give us a working kernel in case we crash and reboot */
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system("cp /kernel.prev /kernel");
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}
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}
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|
msgNotify("Beginning extraction of distributions..");
|
|
if (DITEM_STATUS(distExtractAll(self)) == DITEM_FAILURE) {
|
|
msgConfirm("Hmmmm. We couldn't even extract the bin distribution. This upgrade\n"
|
|
"should be considered a failure and started from the beginning, sorry!\n"
|
|
"The system will reboot now.");
|
|
dialog_clear();
|
|
systemShutdown(1);
|
|
}
|
|
else if (Dists) {
|
|
if (!(Dists & DIST_BIN)) {
|
|
msgNotify("The extraction process seems to have had some problems, but we got most\n"
|
|
"of the essentials. We'll treat this as a warning since it may have been\n"
|
|
"only non-essential distributions which failed to upgrade.");
|
|
}
|
|
else {
|
|
msgConfirm("Hmmmm. We couldn't even extract the bin distribution. This upgrade\n"
|
|
"should be considered a failure and started from the beginning, sorry!\n"
|
|
"The system will reboot now.");
|
|
dialog_clear();
|
|
systemShutdown(1);
|
|
}
|
|
}
|
|
|
|
msgNotify("OK, now it's time to go pound on your root a little bit to create all the\n"
|
|
"/dev entries and such that a new system expects to see. I'll also perform a\n"
|
|
"few \"fixup\" operations to repair the effects of splatting a bin distribution\n"
|
|
"on top of an existing system..");
|
|
if (DITEM_STATUS(installFixup(self)) == DITEM_FAILURE) {
|
|
msgNotify("Hmmmmm. The fixups don't seem to have been very happy.\n"
|
|
"You may wish to examine the system a little more closely when\n"
|
|
"it comes time to merge your /etc customizations back.");
|
|
}
|
|
|
|
msgNotify("First stage of upgrade completed successfully.");
|
|
if (vsystem("tar -cpBf - -C %s . | tar --unlink -xpBf - -C /etc", saved_etc)) {
|
|
msgNotify("Unable to resurrect your old /etc!");
|
|
return DITEM_FAILURE | DITEM_RESTORE;
|
|
}
|
|
return DITEM_SUCCESS | DITEM_REDRAW;
|
|
}
|