293 lines
6.9 KiB
C
293 lines
6.9 KiB
C
/* $NetBSD: upgrade.c,v 1.44 2003/12/28 05:30:47 christos Exp $ */
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/*
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* Copyright 1997 Piermont Information Systems Inc.
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* All rights reserved.
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*
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* Written by Philip A. Nelson for Piermont Information Systems Inc.
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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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* 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Piermont Information Systems Inc.
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* 4. The name of Piermont Information Systems Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
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* AND 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 PIERMONT INFORMATION SYSTEMS INC. BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/* upgrade.c -- upgrade an installation. */
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#include <stdio.h>
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#include <curses.h>
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#include <errno.h>
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#include "defs.h"
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#include "msg_defs.h"
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#include "menu_defs.h"
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/*
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* local prototypes
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*/
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static int save_etc(void);
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static int merge_etc(void);
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static int save_X(void);
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static int merge_X(void);
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static int etc_saved;
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/*
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* Do the system upgrade.
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*/
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void
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do_upgrade(void)
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{
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msg_display(MSG_upgradeusure);
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process_menu(MENU_noyes, NULL);
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if (!yesno)
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return;
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get_ramsize();
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if (find_disks(msg_string(MSG_upgrade)) < 0)
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return;
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if (md_pre_update() < 0)
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return;
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process_menu(MENU_distset, NULL);
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if (mount_disks() != 0)
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return;
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/*
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* Save X symlink, ...
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*/
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if (save_X())
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return;
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/*
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* Move target /etc -> target /etc.old so existing configuration
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* isn't overwritten by upgrade.
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*/
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if (sets_selected & SET_ETC && save_etc()) {
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merge_X();
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return;
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}
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/* Do any md updating of the file systems ... e.g. bootblocks,
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copy file systems ... */
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if (!md_update())
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return;
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/* Done with disks. Ready to get and unpack tarballs. */
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msg_display(MSG_disksetupdoneupdate);
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getchar();
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wrefresh(curscr);
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wmove(stdscr, 0, 0);
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wclear(stdscr);
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wrefresh(stdscr);
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if (get_and_unpack_sets(MSG_upgrcomplete, MSG_abortupgr) != 0)
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return;
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/* Copy back any files we should restore after the upgrade.*/
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if (sets_installed & SET_ETC)
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merge_etc();
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merge_X();
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sanity_check();
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}
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/*
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* save target /etc files.
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* if target /etc.old exists, print a warning message and give up.
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* otherwise move /etc into target /etc.old, and then copy
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* back files we might want during the installation -- in case
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* we are upgrading the target root.
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*/
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static int
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save_etc(void)
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{
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if (target_dir_exists_p("/etc.old")) {
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msg_display(MSG_etc_oldexists);
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process_menu(MENU_ok, NULL);
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return EEXIST;
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}
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#ifdef DEBUG
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printf("saving /etc as /etc.old...");
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#endif
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/* Move target /etc to /etc.old. Abort on error. */
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mv_within_target_or_die("/etc", "/etc.old");
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etc_saved = 1;
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/* now make an /etc that should let the user reboot. */
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make_target_dir("/etc");
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#ifdef DEBUG
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printf("Copying essential files back into new /etc...");
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#endif
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/* essential stuff */
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cp_within_target("/etc.old/ld.so.cache", "/etc/", 1);
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cp_within_target("/etc.old/ld.so.conf", "/etc/", 0);
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cp_within_target("/etc.old/resolv.conf", "/etc/", 1);
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/*
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* do NOT create fstab so that restarting an incomplete
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* upgrade (eg., after power failure) will fail, and
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* force the user to check and restore their old /etc.
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*/
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/* general config */
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cp_within_target("/etc.old/rc", "/etc/", 0);
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cp_within_target("/etc.old/rc.conf", "/etc/", 0);
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cp_within_target("/etc.old/rc.local", "/etc/", 0);
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/* network config */
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cp_within_target("/etc.old/ifconfig.*", "/etc/", 0);
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/* these should become parts of rc.conf */
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cp_within_target("/etc.old/myname", "/etc/", 1);
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cp_within_target("/etc.old/mygate", "/etc/", 1);
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cp_within_target("/etc.old/defaultdomain", "/etc/", 1);
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/* old-style network config */
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cp_within_target("/etc.old/hostname.*", "/etc/", 1);
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return 0;
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}
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/*
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* Attempt to undo save_etc() if the install fails
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*/
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void
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restore_etc(void)
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{
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const char *tp;
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if (!etc_saved)
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return;
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if (sets_installed & SET_ETC)
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return;
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tp = target_prefix();
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run_program(0, "mv -f %s/etc.old/* %s/etc", tp, tp);
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run_program(0, "rmdir %s/etc.old", tp);
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etc_saved = 0;
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}
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/*
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* Save X symlink to X.old so it can be recovered later
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*/
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static int
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save_X(void)
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{
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/* Only care for X if it's a symlink */
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if (target_symlink_exists_p("/usr/X11R6/bin/X")) {
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if (target_symlink_exists_p("/usr/X11R6/bin/X.old")) {
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msg_display(MSG_X_oldexists);
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process_menu(MENU_ok, NULL);
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return EEXIST;
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}
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#ifdef DEBUG
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printf("saving /usr/X11R6/bin/X as .../X.old ...");
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#endif
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/* Move target .../X to .../X.old. Abort on error. */
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mv_within_target_or_die("/usr/X11R6/bin/X",
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"/usr/X11R6/bin/X.old");
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}
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return 0;
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}
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/*
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* Merge back saved target /etc files after unpacking the new
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* sets has completed.
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*/
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static int
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merge_etc(void)
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{
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if (etc_saved == 0)
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return 0;
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etc_saved = 0;
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/* just move back fstab, so we can boot cleanly. */
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cp_within_target("/etc.old/fstab", "/etc/", 0);
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return 0;
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}
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/*
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* Merge back saved target X files after unpacking the new
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* sets has completed.
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*/
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static int
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merge_X(void)
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{
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if (target_symlink_exists_p("/usr/X11R6/bin/X.old")) {
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/* Only move back X if it's a symlink - we don't want
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* to restore old binaries */
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mv_within_target_or_die("/usr/X11R6/bin/X.old",
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"/usr/X11R6/bin/X");
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}
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return 0;
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}
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/*
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* Unpacks sets, clobbering existing contents.
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*/
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void
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do_reinstall_sets(void)
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{
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unwind_mounts();
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msg_display(MSG_reinstallusure);
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process_menu(MENU_noyes, NULL);
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if (!yesno)
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return;
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if (find_disks(msg_string(MSG_reinstall)) < 0)
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return;
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process_menu(MENU_distset, NULL);
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if (mount_disks() != 0)
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return;
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/* Unpack the distribution. */
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if (get_and_unpack_sets(MSG_unpackcomplete, MSG_abortunpack) != 0)
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return;
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sanity_check();
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}
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