1 /* $NetBSD: md.c,v 1.12 2020/01/27 21:21:23 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 67 if (pm->no_mbr || pm->no_part) 68 return true; 69 70 if (pm->parts == NULL) { 71 72 const struct disk_partitioning_scheme *ps = 73 select_part_scheme(pm, NULL, true, NULL); 74 75 if (!ps) 76 return false; 77 78 struct disk_partitions *parts = 79 (*ps->create_new_for_disk)(pm->diskdev, 80 0, pm->dlsize, true, NULL); 81 if (!parts) 82 return false; 83 84 pm->parts = parts; 85 if (ps->size_limit > 0 && pm->dlsize > ps->size_limit) 86 pm->dlsize = ps->size_limit; 87 } 88 89 return set_bios_geom_with_mbr_guess(pm->parts); 90 } 91 92 /* 93 * md back-end code for menu-driven BSD disklabel editor. 94 */ 95 bool 96 md_make_bsd_partitions(struct install_partition_desc *install) 97 { 98 return make_bsd_partitions(install); 99 } 100 101 /* 102 * any additional partition validation 103 */ 104 bool 105 md_check_partitions(struct install_partition_desc *install) 106 { 107 size_t part; 108 109 /* we need to find a boot partition, otherwise we can't write our 110 * "bootblock". We make the assumption that the user hasn't done 111 * something stupid, like move it away from the MBR partition. 112 */ 113 for (part = 0; part < install->num; part++) 114 if (install->infos[part].fs_type == FS_BOOT) { 115 prep_bootpart = part; 116 return true; 117 } 118 119 msg_display(MSG_prepnobootpart); 120 process_menu(MENU_ok, NULL); 121 return false; 122 } 123 124 /* 125 * hook called before writing new disklabel. 126 */ 127 bool 128 md_pre_disklabel(struct install_partition_desc *install, 129 struct disk_partitions *parts) 130 { 131 132 if (parts->parent == NULL) 133 return true; /* no outer partitions */ 134 135 parts = parts->parent; 136 137 msg_display_subst(MSG_dofdisk, 3, parts->disk, 138 msg_string(parts->pscheme->name), 139 msg_string(parts->pscheme->short_name)); 140 141 /* write edited "MBR" onto disk. */ 142 if (!parts->pscheme->write_to_disk(parts)) { 143 msg_display(MSG_wmbrfail); 144 process_menu(MENU_ok, NULL); 145 return false; 146 } 147 return true; 148 } 149 150 /* 151 * hook called after writing disklabel to new target disk. 152 */ 153 bool 154 md_post_disklabel(struct install_partition_desc *install, 155 struct disk_partitions *parts) 156 { 157 return true; 158 } 159 160 /* 161 * hook called after upgrade() or install() has finished setting 162 * up the target disk but immediately before the user is given the 163 * ``disks are now set up'' message. 164 */ 165 int 166 md_post_newfs(struct install_partition_desc *install) 167 { 168 return 0; 169 } 170 171 int 172 md_post_extract(struct install_partition_desc *install) 173 { 174 char rawdev[100], bootpart[100], bootloader[100]; 175 int contype; 176 177 /* if we can't make it bootable, just punt */ 178 if (prep_nobootfix) 179 return 0; 180 181 process_menu(MENU_prepconsole, &contype); 182 if (contype == 1) 183 snprintf(bootloader, 100, "/usr/mdec/boot_com0"); 184 else 185 snprintf(bootloader, 100, "/usr/mdec/boot"); 186 187 snprintf(rawdev, 100, "/dev/r%s%c", pm->diskdev, 188 (char)('a' + getrawpartition())); 189 snprintf(bootpart, 100, "/dev/r%s%c", pm->diskdev, 190 (char)('a' + prep_bootpart)); 191 if (prep_rawdevfix) 192 run_program(RUN_DISPLAY|RUN_CHROOT, 193 "/usr/mdec/mkbootimage -b %s -k /netbsd " 194 "-r %s /.bootimage", bootloader, rawdev); 195 else 196 run_program(RUN_DISPLAY|RUN_CHROOT, 197 "/usr/mdec/mkbootimage -s -b %s -k /netbsd /.bootimage", 198 bootloader); 199 run_program(RUN_DISPLAY|RUN_CHROOT, "/bin/dd if=/.bootimage of=%s " 200 "bs=512 conv=sync", bootpart); 201 202 return 0; 203 } 204 205 void 206 md_cleanup_install(struct install_partition_desc *install) 207 { 208 #ifndef DEBUG 209 enable_rc_conf(); 210 #endif 211 run_program(0, "rm -f %s", target_expand("/.bootimage")); 212 } 213 214 int 215 md_pre_update(struct install_partition_desc *install) 216 { 217 size_t i; 218 219 /* do a sanity check of the partition table */ 220 for (i = 0; i < install->num; i++) { 221 if (install->infos[i].fs_type != PART_BOOT_TYPE) 222 continue; 223 if (install->infos[i].size < (int)(MIN_PREP_BOOT/512)) { 224 msg_display(MSG_preptoosmall); 225 msg_fmt_display_add(MSG_prepnobootpart, "%d", 0); 226 if (!ask_yesno(NULL)) 227 return 0; 228 prep_nobootfix = 1; 229 } 230 if (install->infos[i].cur_start == 0) 231 prep_rawdevfix = 1; 232 } 233 if (!md_check_partitions(install)) 234 prep_nobootfix = 1; 235 return 1; 236 } 237 238 /* Upgrade support */ 239 int 240 md_update(struct install_partition_desc *install) 241 { 242 md_post_newfs(install); 243 return 1; 244 } 245 246 int 247 md_check_mbr(struct disk_partitions *parts, mbr_info_t *mbri, bool quiet) 248 { 249 mbr_info_t *ext; 250 struct mbr_partition *part; 251 int i; 252 253 for (ext = mbri; ext; ext = ext->extended) { 254 part = ext->mbr.mbr_parts; 255 for (i = 0; i < MBR_PART_COUNT; part++, i++) { 256 if (part->mbrp_type != MBR_PTYPE_PREP) 257 continue; 258 pm->bootstart = part->mbrp_start; 259 pm->bootsize = part->mbrp_size; 260 break; 261 } 262 } 263 if (pm->bootsize < (int)(MIN_PREP_BOOT/512)) { 264 msg_display(MSG_preptoosmall); 265 return ask_reedit(parts); 266 } 267 if (pm->bootstart == 0 || pm->bootsize == 0) { 268 if (quiet) 269 return 0; 270 msg_display(MSG_nopreppart); 271 return ask_reedit(parts); 272 } 273 return 2; 274 } 275 276 bool 277 md_parts_use_wholedisk(struct disk_partitions *parts) 278 { 279 struct disk_part_info boot_part = { 280 .size = PART_BOOT / 512, 281 .fs_type = PART_BOOT_TYPE, 282 }; 283 284 boot_part.nat_type = parts->pscheme->get_fs_part_type( 285 PT_root, boot_part.fs_type, boot_part.fs_sub_type); 286 287 return parts_use_wholedisk(parts, 1, &boot_part); 288 } 289 290 int 291 md_pre_mount(struct install_partition_desc *install, size_t ndx) 292 { 293 return 0; 294 } 295 296 bool 297 md_mbr_update_check(struct disk_partitions *parts, mbr_info_t *mbri) 298 { 299 return false; /* no change, no need to write back */ 300 } 301 302 #ifdef HAVE_GPT 303 bool 304 md_gpt_post_write(struct disk_partitions *parts, part_id root_id, 305 bool root_is_new, part_id efi_id, bool efi_is_new) 306 { 307 /* no GPT boot support, nothing needs to be done here */ 308 return true; 309 } 310 #endif 311 312