1 /* $NetBSD: md.c,v 1.7 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 -- shark machine specific routines */ 36 37 #include <stdio.h> 38 #include <curses.h> 39 #include <unistd.h> 40 #include <fcntl.h> 41 #include <util.h> 42 #include <sys/types.h> 43 #include <sys/ioctl.h> 44 #include <sys/param.h> 45 46 #include "defs.h" 47 #include "md.h" 48 #include "mbr.h" 49 #include "msg_defs.h" 50 #include "menu_defs.h" 51 52 static int clear_mbr(const char *, char *, size_t); 53 54 void 55 md_init(void) 56 { 57 } 58 59 void 60 md_init_set_status(int flags) 61 { 62 (void)flags; 63 } 64 65 bool 66 md_get_info(struct install_partition_desc *install) 67 { 68 struct disklabel disklabel; 69 int fd; 70 char dev_name[100]; 71 72 snprintf(dev_name, 100, "/dev/r%sc", pm->diskdev); 73 74 fd = open(dev_name, O_RDONLY, 0); 75 if (fd < 0) { 76 endwin(); 77 fprintf(stderr, "Can't open %s\n", dev_name); 78 exit(1); 79 } 80 if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) { 81 endwin(); 82 fprintf(stderr, "Can't read disklabel on %s.\n", dev_name); 83 close(fd); 84 exit(1); 85 } 86 close(fd); 87 88 pm->dlcyl = disklabel.d_ncylinders; 89 pm->dlhead = disklabel.d_ntracks; 90 pm->dlsec = disklabel.d_nsectors; 91 pm->sectorsize = disklabel.d_secsize; 92 pm->dlcylsize = disklabel.d_secpercyl; 93 94 /* 95 * Compute whole disk size. Take max of (pm->dlcyl*pm->dlhead*pm->dlsec) 96 * and secperunit, just in case the disk is already labelled. 97 * (If our new label's RAW_PART size ends up smaller than the 98 * in-core RAW_PART size value, updating the label will fail.) 99 */ 100 pm->dlsize = pm->dlcyl*pm->dlhead*pm->dlsec; 101 if (disklabel.d_secperunit > pm->dlsize) 102 pm->dlsize = disklabel.d_secperunit; 103 104 return true; 105 } 106 107 /* 108 * md back-end code for menu-driven BSD disklabel editor. 109 */ 110 int 111 md_make_bsd_partitions(struct install_partition_desc *install) 112 { 113 return make_bsd_partitions(install); 114 } 115 116 /* 117 * any additional partition validation 118 */ 119 bool 120 md_check_partitions(struct install_partition_desc *install) 121 { 122 return true; 123 } 124 125 /* 126 * hook called before writing new disklabel. 127 */ 128 bool 129 md_pre_disklabel(struct install_partition_desc *install, 130 struct disk_partitions *parts) 131 { 132 char diskpath[MAXPATHLEN]; 133 134 if (clear_mbr(pm->diskdev, diskpath, sizeof(diskpath)) == -1) { 135 msg_fmt_display(MSG_badclearmbr, "%s", diskpath); 136 process_menu(MENU_ok, NULL); 137 } 138 139 return true; 140 } 141 142 /* 143 * hook called after writing disklabel to new target disk. 144 */ 145 bool 146 md_post_disklabel(struct install_partition_desc *install, 147 struct disk_partitions *parts) 148 { 149 return true; 150 } 151 152 /* 153 * hook called after upgrade() or install() has finished setting 154 * up the target disk but immediately before the user is given the 155 * ``disks are now set up'' message. 156 */ 157 int 158 md_post_newfs(struct install_partition_desc *install) 159 { 160 return 0; 161 } 162 163 int 164 md_post_extract(struct install_partition_desc *install, bool upgrade) 165 { 166 msg_display(MSG_setbootdevice); 167 process_menu(MENU_ok, NULL); 168 169 return 0; 170 } 171 172 void 173 md_cleanup_install(struct install_partition_desc *install) 174 { 175 #ifndef DEBUG 176 enable_rc_conf(); 177 add_rc_conf("wscons=YES\n"); 178 179 /* Configure a single screen. */ 180 run_program(RUN_CHROOT, 181 "sed -an -e '/^screen/s/^/#/;/^mux/s/^/#/;" 182 "H;$!d;g;w /etc/wscons.conf' /etc/wscons.conf"); 183 184 #endif 185 } 186 187 int 188 md_pre_update(struct install_partition_desc *install) 189 { 190 return 1; 191 } 192 193 /* Upgrade support */ 194 int 195 md_update(struct install_partition_desc *install) 196 { 197 md_post_newfs(install); 198 return 1; 199 } 200 201 /* 202 * Clears the disk's first sector by writing all zeros over it. 203 * Returns 0 on success, -1 on failure. Leaves the disk's path in 204 * the output diskpath buffer for further usage in error messages. 205 */ 206 static int 207 clear_mbr(const char *disk, char *diskpath, size_t diskpathlen) 208 { 209 int fd; 210 char sector[512]; 211 212 fd = opendisk(disk, O_WRONLY, diskpath, diskpathlen, 0); 213 if (fd < 0) 214 return -1; 215 216 memset(sector, 0, sizeof(sector)); 217 if (pwrite(fd, §or, sizeof(sector), 0) < 0) { 218 close(fd); 219 return -1; 220 } 221 222 close(fd); 223 return 0; 224 } 225 226 int 227 md_pre_mount(struct install_partition_desc *install, size_t ndx) 228 { 229 return 0; 230 } 231 232 /* returns false if no write-back of parts is required */ 233 bool 234 md_mbr_update_check(struct disk_partitions *parts, mbr_info_t *mbri) 235 { 236 return false; 237 } 238 239 #ifdef HAVE_GPT 240 /* 241 * New GPT partitions have been written, update bootloader or remember 242 * data untill needed in md_post_newfs 243 */ 244 bool 245 md_gpt_post_write(struct disk_partitions *parts, part_id root_id, 246 bool root_is_new, part_id efi_id, bool efi_is_new) 247 { 248 return true; 249 } 250 #endif 251 252 bool 253 md_parts_use_wholedisk(struct disk_partitions *parts) 254 { 255 return parts_use_wholedisk(parts, 0, NULL); 256 } 257
Indexes created Mon Sep 22 13:09:51 GMT 2025