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 53 md_init(void) 54 { 55 } 56 57 void 58 md_init_set_status(int flags) 59 { 60 (void)flags; 61 } 62 63 bool 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 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 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 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 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 176 md_post_newfs(struct install_partition_desc *install) 177 { 178 return 0; 179 } 180 181 int 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 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 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 250 md_update(struct install_partition_desc *install) 251 { 252 md_post_newfs(install); 253 return 1; 254 } 255 256 int 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 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 301 md_pre_mount(struct install_partition_desc *install, size_t ndx) 302 { 303 return 0; 304 } 305 306 bool 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 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