upgrade.c revision 1.7 
1/*	$NetBSD: upgrade.c,v 1.7 2019/06/12 06:20:18 martin Exp $	*/
2
3/*
4 * Copyright 1997 Piermont Information Systems Inc.
5 * All rights reserved.
6 *
7 * Written by Philip A. Nelson for Piermont Information Systems Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. The name of Piermont Information Systems Inc. may not be used to endorse
18 *    or promote products derived from this software without specific prior
19 *    written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 */
34
35/* upgrade.c -- upgrade an installation. */
36
37#include <sys/param.h>
38#include <stdio.h>
39#include <curses.h>
40#include <errno.h>
41#include "defs.h"
42#include "msg_defs.h"
43#include "menu_defs.h"
44
45/*
46 * local prototypes
47 */
48static int save_X(const char *);
49static int merge_X(const char *);
50
51/*
52 * Do the system upgrade.
53 */
54void
55do_upgrade(void)
56{
57	struct install_partition_desc install;
58	int retcode = 0;
59	partman_go = 0;
60
61	msg_display(MSG_upgradeusure);
62	if (!ask_noyes(NULL))
63		return;
64
65	get_ramsize();
66
67	if (find_disks(msg_string(MSG_upgrade)) < 0)
68		return;
69
70	/* XXX - build install_partition_desc from existing partitions
71	 * and pass that here and below instead of NULL */
72	if (set_swap_if_low_ram(NULL) < 0)
73		return;
74
75	if (pm->parts->pscheme->pre_update_verify) {
76		if (pm->parts->pscheme->pre_update_verify(pm->parts))
77			pm->parts->pscheme->write_to_disk(pm->parts);
78	}
79
80	install_desc_from_parts(&install, pm->parts);
81
82	if (md_pre_update(&install) < 0)
83		goto free_install;
84
85	if (mount_disks(&install) != 0)
86		goto free_install;
87
88
89	/*
90	 * Save X symlink, ...
91	 */
92	if (save_X("/usr/X11R6"))
93		goto free_install;
94	if (save_X("/usr/X11R7"))
95		goto free_install;
96
97#ifdef AOUT2ELF
98	move_aout_libs();
99#endif
100	/* Do any md updating of the file systems ... e.g. bootblocks,
101	   copy file systems ... */
102	/* XXX pass install here too */
103	if (!md_update(&install))
104		goto free_install;
105
106	wrefresh(curscr);
107	wmove(stdscr, 0, 0);
108	wclear(stdscr);
109	wrefresh(stdscr);
110
111	/* Done with disks. Ready to get and unpack tarballs. */
112	process_menu(MENU_distset, &retcode);
113	if (retcode == 0)
114		goto free_install;
115	if (get_and_unpack_sets(1, MSG_disksetupdoneupdate,
116	    MSG_upgrcomplete, MSG_abortupgr) != 0)
117		goto free_install;
118
119	if (md_post_extract(&install))
120		goto free_install;
121
122	merge_X("/usr/X11R6");
123	merge_X("/usr/X11R7");
124
125	sanity_check();
126
127free_install:
128	free_install_desc(&install);
129}
130
131/*
132 * Save X symlink to X.old so it can be recovered later
133 */
134static int
135save_X(const char *xroot)
136{
137	char newx[MAXPATHLEN], oldx[MAXPATHLEN];
138
139	strlcpy(newx, xroot, sizeof(newx));
140	strlcat(newx, "/bin/X", sizeof(newx));
141	strlcpy(oldx, newx, sizeof(oldx));
142	strlcat(oldx, ".old", sizeof(oldx));
143
144	/* Only care for X if it's a symlink */
145	if (target_symlink_exists_p(newx)) {
146		if (target_symlink_exists_p(oldx)) {
147			msg_display(MSG_X_oldexists, xroot, xroot, xroot,
148			    xroot, xroot, xroot, xroot, xroot, xroot, xroot,
149			    xroot);
150			hit_enter_to_continue(NULL, NULL);
151			return EEXIST;
152		}
153
154#ifdef DEBUG
155		printf("saving %s as %s ...", newx, oldx);
156#endif
157
158		/* Move target .../X to .../X.old.  Abort on error. */
159		mv_within_target_or_die(newx, oldx);
160	}
161
162	return 0;
163}
164
165/*
166 * Merge back saved target X files after unpacking the new
167 * sets has completed.
168 */
169static int
170merge_X(const char *xroot)
171{
172	char newx[MAXPATHLEN], oldx[MAXPATHLEN];
173
174	strlcpy(newx, xroot, sizeof(newx));
175	strlcat(newx, "/bin/X", sizeof(newx));
176	strlcpy(oldx, newx, sizeof(oldx));
177	strlcat(oldx, ".old", sizeof(oldx));
178
179	if (target_symlink_exists_p(oldx)) {
180		/* Only move back X if it's a symlink - we don't want
181		 * to restore old binaries */
182		mv_within_target_or_die(oldx, newx);
183	}
184
185	return 0;
186}
187
188/*
189 * Unpacks sets,  clobbering existing contents.
190 */
191void
192do_reinstall_sets(struct install_partition_desc *install)
193{
194	int retcode = 0;
195
196	unwind_mounts();
197	msg_display(MSG_reinstallusure);
198	if (!ask_noyes(NULL))
199		return;
200
201	if (find_disks(msg_string(MSG_reinstall)) < 0)
202		return;
203
204	/* XXX find proper pm pointer and pass it here, make sure we have
205	 * read partitions and provide "infos" in there */
206	if (mount_disks(install) != 0)
207		return;
208
209	/* Unpack the distribution. */
210	process_menu(MENU_distset, &retcode);
211	if (retcode == 0)
212		return;
213	if (get_and_unpack_sets(0, NULL, MSG_unpackcomplete, MSG_abortunpack) != 0)
214		return;
215
216	sanity_check();
217}
218