upgrade.c revision 1.11 
1/*	$NetBSD: upgrade.c,v 1.11 2019/07/23 16:02:32 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	if (pm->parts == NULL) {
71		hit_enter_to_continue(MSG_noroot, NULL);
72		return;
73	}
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 (set_swap_if_low_ram(&install) < 0)
83		return;
84
85	if (md_pre_update(&install) < 0)
86		goto free_install;
87
88	if (mount_disks(&install) != 0)
89		goto free_install;
90
91
92	/*
93	 * Save X symlink, ...
94	 */
95	if (save_X("/usr/X11R6"))
96		goto free_install;
97	if (save_X("/usr/X11R7"))
98		goto free_install;
99
100#ifdef AOUT2ELF
101	move_aout_libs();
102#endif
103	/* Do any md updating of the file systems ... e.g. bootblocks,
104	   copy file systems ... */
105	/* XXX pass install here too */
106	if (!md_update(&install))
107		goto free_install;
108
109	wrefresh(curscr);
110	wmove(stdscr, 0, 0);
111	wclear(stdscr);
112	wrefresh(stdscr);
113
114	/* Done with disks. Ready to get and unpack tarballs. */
115	process_menu(MENU_distset, &retcode);
116	if (retcode == 0)
117		goto free_install;
118	if (get_and_unpack_sets(1, MSG_disksetupdoneupdate,
119	    MSG_upgrcomplete, MSG_abortupgr) != 0)
120		goto free_install;
121
122	if (md_post_extract(&install))
123		goto free_install;
124
125	merge_X("/usr/X11R6");
126	merge_X("/usr/X11R7");
127
128	sanity_check();
129
130free_install:
131	free_install_desc(&install);
132}
133
134/*
135 * Save X symlink to X.old so it can be recovered later
136 */
137static int
138save_X(const char *xroot)
139{
140	char newx[MAXPATHLEN], oldx[MAXPATHLEN];
141
142	strlcpy(newx, xroot, sizeof(newx));
143	strlcat(newx, "/bin/X", sizeof(newx));
144	strlcpy(oldx, newx, sizeof(oldx));
145	strlcat(oldx, ".old", sizeof(oldx));
146
147	/* Only care for X if it's a symlink */
148	if (target_symlink_exists_p(newx)) {
149		if (target_symlink_exists_p(oldx)) {
150			msg_fmt_display(MSG_X_oldexists,
151			    "%s%s%s%s%s%s%s%s%s%s%s",
152			    xroot, xroot, xroot, xroot, xroot, xroot, xroot,
153			    xroot, xroot, xroot, xroot);
154			hit_enter_to_continue(NULL, NULL);
155			return EEXIST;
156		}
157
158#ifdef DEBUG
159		printf("saving %s as %s ...", newx, oldx);
160#endif
161
162		/* Move target .../X to .../X.old.  Abort on error. */
163		mv_within_target_or_die(newx, oldx);
164	}
165
166	return 0;
167}
168
169/*
170 * Merge back saved target X files after unpacking the new
171 * sets has completed.
172 */
173static int
174merge_X(const char *xroot)
175{
176	char newx[MAXPATHLEN], oldx[MAXPATHLEN];
177
178	strlcpy(newx, xroot, sizeof(newx));
179	strlcat(newx, "/bin/X", sizeof(newx));
180	strlcpy(oldx, newx, sizeof(oldx));
181	strlcat(oldx, ".old", sizeof(oldx));
182
183	if (target_symlink_exists_p(oldx)) {
184		/* Only move back X if it's a symlink - we don't want
185		 * to restore old binaries */
186		mv_within_target_or_die(oldx, newx);
187	}
188
189	return 0;
190}
191
192/*
193 * Unpacks sets,  clobbering existing contents.
194 */
195void
196do_reinstall_sets()
197{
198	struct install_partition_desc install;
199	int retcode = 0;
200	partman_go = 0;
201
202	unwind_mounts();
203	msg_display(MSG_reinstallusure);
204	if (!ask_noyes(NULL))
205		return;
206
207	if (find_disks(msg_string(MSG_reinstall)) < 0)
208		return;
209
210	if (pm->parts == NULL) {
211		hit_enter_to_continue(MSG_noroot, NULL);
212		return;
213	}
214
215	install_desc_from_parts(&install, pm->parts);
216
217	if (mount_disks(&install) != 0)
218		goto free_install;
219
220	/* Unpack the distribution. */
221	process_menu(MENU_distset, &retcode);
222	if (retcode == 0)
223		goto free_install;
224	if (get_and_unpack_sets(0, NULL, MSG_unpackcomplete, MSG_abortunpack) != 0)
225		goto free_install;
226
227	sanity_check();
228
229free_install:
230	free_install_desc(&install);
231}
232