1 /* $NetBSD: md.c,v 1.14 2022/01/29 16:01:20 martin Exp $ */
2
3 /*
4 * Copyright 1997 Piermont Information Systems Inc.
5 * All rights reserved.
6 *
7 * Based on code written by Philip A. Nelson for Piermont Information
8 * Systems Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of Piermont Information Systems Inc. may not be used to endorse
19 * or promote products derived from this software without specific prior
20 * written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 /* md.c -- prep machine specific routines */
36
37 #include <sys/param.h>
38 #include <sys/sysctl.h>
39 #include <stdio.h>
40 #include <util.h>
41 #include <machine/cpu.h>
42
43 #include "defs.h"
44 #include "md.h"
45 #include "msg_defs.h"
46 #include "menu_defs.h"
47 #include "endian.h"
48
49 int prep_nobootfix = 0, prep_rawdevfix = 0;
50 size_t prep_bootpart = ~0U;
51
52 void
md_init(void)53 md_init(void)
54 {
55 }
56
57 void
md_init_set_status(int flags)58 md_init_set_status(int flags)
59 {
60 (void)flags;
61 }
62
63 bool
md_get_info(struct install_partition_desc * install)64 md_get_info(struct install_partition_desc *install)
65 {
66 int res;
67
68 if (pm->no_mbr || pm->no_part)
69 return true;
70
71 again:
72 if (pm->parts == NULL) {
73
74 const struct disk_partitioning_scheme *ps =
75 select_part_scheme(pm, NULL, true, NULL);
76
77 if (!ps)
78 return false;
79
80 struct disk_partitions *parts =
81 (*ps->create_new_for_disk)(pm->diskdev,
82 0, pm->dlsize, true, NULL);
83 if (!parts)
84 return false;
85
86 pm->parts = parts;
87 if (ps->size_limit > 0 && pm->dlsize > ps->size_limit)
88 pm->dlsize = ps->size_limit;
89 }
90
91 res = set_bios_geom_with_mbr_guess(pm->parts);
92 if (res == 0)
93 return false;
94 else if (res == 1)
95 return true;
96
97 pm->parts->pscheme->destroy_part_scheme(pm->parts);
98 pm->parts = NULL;
99 goto again;
100 }
101
102 /*
103 * md back-end code for menu-driven BSD disklabel editor.
104 */
105 int
md_make_bsd_partitions(struct install_partition_desc * install)106 md_make_bsd_partitions(struct install_partition_desc *install)
107 {
108 return make_bsd_partitions(install);
109 }
110
111 /*
112 * any additional partition validation
113 */
114 bool
md_check_partitions(struct install_partition_desc * install)115 md_check_partitions(struct install_partition_desc *install)
116 {
117 size_t part;
118
119 /* we need to find a boot partition, otherwise we can't write our
120 * "bootblock". We make the assumption that the user hasn't done
121 * something stupid, like move it away from the MBR partition.
122 */
123 for (part = 0; part < install->num; part++)
124 if (install->infos[part].fs_type == FS_BOOT) {
125 prep_bootpart = part;
126 return true;
127 }
128
129 msg_display(MSG_prepnobootpart);
130 process_menu(MENU_ok, NULL);
131 return false;
132 }
133
134 /*
135 * hook called before writing new disklabel.
136 */
137 bool
md_pre_disklabel(struct install_partition_desc * install,struct disk_partitions * parts)138 md_pre_disklabel(struct install_partition_desc *install,
139 struct disk_partitions *parts)
140 {
141
142 if (parts->parent == NULL)
143 return true; /* no outer partitions */
144
145 parts = parts->parent;
146
147 msg_display_subst(MSG_dofdisk, 3, parts->disk,
148 msg_string(parts->pscheme->name),
149 msg_string(parts->pscheme->short_name));
150
151 /* write edited "MBR" onto disk. */
152 if (!parts->pscheme->write_to_disk(parts)) {
153 msg_display(MSG_wmbrfail);
154 process_menu(MENU_ok, NULL);
155 return false;
156 }
157 return true;
158 }
159
160 /*
161 * hook called after writing disklabel to new target disk.
162 */
163 bool
md_post_disklabel(struct install_partition_desc * install,struct disk_partitions * parts)164 md_post_disklabel(struct install_partition_desc *install,
165 struct disk_partitions *parts)
166 {
167 return true;
168 }
169
170 /*
171 * hook called after upgrade() or install() has finished setting
172 * up the target disk but immediately before the user is given the
173 * ``disks are now set up'' message.
174 */
175 int
md_post_newfs(struct install_partition_desc * install)176 md_post_newfs(struct install_partition_desc *install)
177 {
178 return 0;
179 }
180
181 int
md_post_extract(struct install_partition_desc * install,bool upgrade)182 md_post_extract(struct install_partition_desc *install, bool upgrade)
183 {
184 char rawdev[100], bootpart[100], bootloader[100];
185 int contype;
186
187 /* if we can't make it bootable, just punt */
188 if (prep_nobootfix)
189 return 0;
190
191 process_menu(MENU_prepconsole, &contype);
192 if (contype == 1)
193 snprintf(bootloader, 100, "/usr/mdec/boot_com0");
194 else
195 snprintf(bootloader, 100, "/usr/mdec/boot");
196
197 snprintf(rawdev, 100, "/dev/r%s%c", pm->diskdev,
198 (char)('a' + getrawpartition()));
199 snprintf(bootpart, 100, "/dev/r%s%c", pm->diskdev,
200 (char)('a' + prep_bootpart));
201 if (prep_rawdevfix)
202 run_program(RUN_DISPLAY|RUN_CHROOT,
203 "/usr/mdec/mkbootimage -b %s -k /netbsd "
204 "-r %s /.bootimage", bootloader, rawdev);
205 else
206 run_program(RUN_DISPLAY|RUN_CHROOT,
207 "/usr/mdec/mkbootimage -s -b %s -k /netbsd /.bootimage",
208 bootloader);
209 run_program(RUN_DISPLAY|RUN_CHROOT, "/bin/dd if=/.bootimage of=%s "
210 "bs=512 conv=sync", bootpart);
211
212 return 0;
213 }
214
215 void
md_cleanup_install(struct install_partition_desc * install)216 md_cleanup_install(struct install_partition_desc *install)
217 {
218 #ifndef DEBUG
219 enable_rc_conf();
220 #endif
221 run_program(0, "rm -f %s", target_expand("/.bootimage"));
222 }
223
224 int
md_pre_update(struct install_partition_desc * install)225 md_pre_update(struct install_partition_desc *install)
226 {
227 size_t i;
228
229 /* do a sanity check of the partition table */
230 for (i = 0; i < install->num; i++) {
231 if (install->infos[i].fs_type != PART_BOOT_TYPE)
232 continue;
233 if (install->infos[i].size < (int)(MIN_PREP_BOOT/512)) {
234 msg_display(MSG_preptoosmall);
235 msg_fmt_display_add(MSG_prepnobootpart, "%d", 0);
236 if (!ask_yesno(NULL))
237 return 0;
238 prep_nobootfix = 1;
239 }
240 if (install->infos[i].cur_start == 0)
241 prep_rawdevfix = 1;
242 }
243 if (!md_check_partitions(install))
244 prep_nobootfix = 1;
245 return 1;
246 }
247
248 /* Upgrade support */
249 int
md_update(struct install_partition_desc * install)250 md_update(struct install_partition_desc *install)
251 {
252 md_post_newfs(install);
253 return 1;
254 }
255
256 int
md_check_mbr(struct disk_partitions * parts,mbr_info_t * mbri,bool quiet)257 md_check_mbr(struct disk_partitions *parts, mbr_info_t *mbri, bool quiet)
258 {
259 mbr_info_t *ext;
260 struct mbr_partition *part;
261 int i;
262
263 for (ext = mbri; ext; ext = ext->extended) {
264 part = ext->mbr.mbr_parts;
265 for (i = 0; i < MBR_PART_COUNT; part++, i++) {
266 if (part->mbrp_type != MBR_PTYPE_PREP)
267 continue;
268 pm->bootstart = part->mbrp_start;
269 pm->bootsize = part->mbrp_size;
270 break;
271 }
272 }
273 if (pm->bootsize < (int)(MIN_PREP_BOOT/512)) {
274 msg_display(MSG_preptoosmall);
275 return ask_reedit(parts);
276 }
277 if (pm->bootstart == 0 || pm->bootsize == 0) {
278 if (quiet)
279 return 0;
280 msg_display(MSG_nopreppart);
281 return ask_reedit(parts);
282 }
283 return 2;
284 }
285
286 bool
md_parts_use_wholedisk(struct disk_partitions * parts)287 md_parts_use_wholedisk(struct disk_partitions *parts)
288 {
289 struct disk_part_info boot_part = {
290 .size = PART_BOOT / 512,
291 .fs_type = PART_BOOT_TYPE,
292 };
293
294 boot_part.nat_type = parts->pscheme->get_fs_part_type(
295 PT_root, boot_part.fs_type, boot_part.fs_sub_type);
296
297 return parts_use_wholedisk(parts, 1, &boot_part);
298 }
299
300 int
md_pre_mount(struct install_partition_desc * install,size_t ndx)301 md_pre_mount(struct install_partition_desc *install, size_t ndx)
302 {
303 return 0;
304 }
305
306 bool
md_mbr_update_check(struct disk_partitions * parts,mbr_info_t * mbri)307 md_mbr_update_check(struct disk_partitions *parts, mbr_info_t *mbri)
308 {
309 return false; /* no change, no need to write back */
310 }
311
312 #ifdef HAVE_GPT
313 bool
md_gpt_post_write(struct disk_partitions * parts,part_id root_id,bool root_is_new,part_id efi_id,bool efi_is_new)314 md_gpt_post_write(struct disk_partitions *parts, part_id root_id,
315 bool root_is_new, part_id efi_id, bool efi_is_new)
316 {
317 /* no GPT boot support, nothing needs to be done here */
318 return true;
319 }
320 #endif
321
322