1/*- 2 * Copyright (c) 2014 Juniper Networks, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h>
| 1/*- 2 * Copyright (c) 2014 Juniper Networks, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h>
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28__FBSDID("$FreeBSD: head/usr.bin/mkimg/mbr.c 271881 2014-09-19 23:16:02Z marcel $");
| 28__FBSDID("$FreeBSD: head/usr.bin/mkimg/mbr.c 272485 2014-10-03 20:48:11Z marcel $");
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29 30#include <sys/types.h> 31#include <sys/diskmbr.h> 32#include <sys/endian.h> 33#include <sys/errno.h> 34#include <stdlib.h> 35#include <string.h> 36#include <unistd.h> 37 38#include "image.h" 39#include "mkimg.h" 40#include "scheme.h" 41 42#ifndef DOSPTYP_FAT32 43#define DOSPTYP_FAT32 0x0b 44#endif 45 46static struct mkimg_alias mbr_aliases[] = { 47 { ALIAS_EBR, ALIAS_INT2TYPE(DOSPTYP_EXT) }, 48 { ALIAS_FAT32, ALIAS_INT2TYPE(DOSPTYP_FAT32) }, 49 { ALIAS_FREEBSD, ALIAS_INT2TYPE(DOSPTYP_386BSD) }, 50 { ALIAS_NONE, 0 } /* Keep last! */ 51}; 52 53static lba_t 54mbr_metadata(u_int where, lba_t blk) 55{ 56 57 blk += (where == SCHEME_META_IMG_START) ? 1 : 0; 58 return (round_track(blk)); 59} 60 61static void
| 29 30#include <sys/types.h> 31#include <sys/diskmbr.h> 32#include <sys/endian.h> 33#include <sys/errno.h> 34#include <stdlib.h> 35#include <string.h> 36#include <unistd.h> 37 38#include "image.h" 39#include "mkimg.h" 40#include "scheme.h" 41 42#ifndef DOSPTYP_FAT32 43#define DOSPTYP_FAT32 0x0b 44#endif 45 46static struct mkimg_alias mbr_aliases[] = { 47 { ALIAS_EBR, ALIAS_INT2TYPE(DOSPTYP_EXT) }, 48 { ALIAS_FAT32, ALIAS_INT2TYPE(DOSPTYP_FAT32) }, 49 { ALIAS_FREEBSD, ALIAS_INT2TYPE(DOSPTYP_386BSD) }, 50 { ALIAS_NONE, 0 } /* Keep last! */ 51}; 52 53static lba_t 54mbr_metadata(u_int where, lba_t blk) 55{ 56 57 blk += (where == SCHEME_META_IMG_START) ? 1 : 0; 58 return (round_track(blk)); 59} 60 61static void
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62mbr_chs(u_char *cyl, u_char *hd, u_char *sec, uint32_t lba __unused)
| 62mbr_chs(u_char *cylp, u_char *hdp, u_char *secp, lba_t lba)
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63{
| 63{
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| 64 u_int cyl, hd, sec;
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64
| 65
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65 *cyl = 0xff; /* XXX */ 66 *hd = 0xff; /* XXX */ 67 *sec = 0xff; /* XXX */
| 66 mkimg_chs(lba, 1023, &cyl, &hd, &sec); 67 *cylp = cyl; 68 *hdp = hd; 69 *secp = (sec & 0x3f) | ((cyl >> 2) & 0xc0);
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68} 69 70static int 71mbr_write(lba_t imgsz __unused, void *bootcode) 72{ 73 u_char *mbr; 74 struct dos_partition *dpbase, *dp; 75 struct part *part;
| 70} 71 72static int 73mbr_write(lba_t imgsz __unused, void *bootcode) 74{ 75 u_char *mbr; 76 struct dos_partition *dpbase, *dp; 77 struct part *part;
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| 78 lba_t size;
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76 int error; 77 78 mbr = malloc(secsz); 79 if (mbr == NULL) 80 return (ENOMEM); 81 if (bootcode != NULL) { 82 memcpy(mbr, bootcode, DOSPARTOFF); 83 memset(mbr + DOSPARTOFF, 0, secsz - DOSPARTOFF); 84 } else 85 memset(mbr, 0, secsz); 86 le16enc(mbr + DOSMAGICOFFSET, DOSMAGIC); 87 dpbase = (void *)(mbr + DOSPARTOFF); 88 STAILQ_FOREACH(part, &partlist, link) {
| 79 int error; 80 81 mbr = malloc(secsz); 82 if (mbr == NULL) 83 return (ENOMEM); 84 if (bootcode != NULL) { 85 memcpy(mbr, bootcode, DOSPARTOFF); 86 memset(mbr + DOSPARTOFF, 0, secsz - DOSPARTOFF); 87 } else 88 memset(mbr, 0, secsz); 89 le16enc(mbr + DOSMAGICOFFSET, DOSMAGIC); 90 dpbase = (void *)(mbr + DOSPARTOFF); 91 STAILQ_FOREACH(part, &partlist, link) {
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| 92 size = round_track(part->size);
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89 dp = dpbase + part->index; 90 dp->dp_flag = (part->index == 0 && bootcode != NULL) ? 0x80 : 0; 91 mbr_chs(&dp->dp_scyl, &dp->dp_shd, &dp->dp_ssect, 92 part->block); 93 dp->dp_typ = ALIAS_TYPE2INT(part->type); 94 mbr_chs(&dp->dp_ecyl, &dp->dp_ehd, &dp->dp_esect,
| 93 dp = dpbase + part->index; 94 dp->dp_flag = (part->index == 0 && bootcode != NULL) ? 0x80 : 0; 95 mbr_chs(&dp->dp_scyl, &dp->dp_shd, &dp->dp_ssect, 96 part->block); 97 dp->dp_typ = ALIAS_TYPE2INT(part->type); 98 mbr_chs(&dp->dp_ecyl, &dp->dp_ehd, &dp->dp_esect,
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95 part->block + part->size - 1);
| 99 part->block + size - 1);
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96 le32enc(&dp->dp_start, part->block);
| 100 le32enc(&dp->dp_start, part->block);
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97 le32enc(&dp->dp_size, part->size);
| 101 le32enc(&dp->dp_size, size);
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98 } 99 error = image_write(0, mbr, 1); 100 free(mbr); 101 return (error); 102} 103 104static struct mkimg_scheme mbr_scheme = { 105 .name = "mbr", 106 .description = "Master Boot Record", 107 .aliases = mbr_aliases, 108 .metadata = mbr_metadata, 109 .write = mbr_write, 110 .bootcode = 512, 111 .nparts = NDOSPART, 112 .maxsecsz = 4096 113}; 114 115SCHEME_DEFINE(mbr_scheme);
| 102 } 103 error = image_write(0, mbr, 1); 104 free(mbr); 105 return (error); 106} 107 108static struct mkimg_scheme mbr_scheme = { 109 .name = "mbr", 110 .description = "Master Boot Record", 111 .aliases = mbr_aliases, 112 .metadata = mbr_metadata, 113 .write = mbr_write, 114 .bootcode = 512, 115 .nparts = NDOSPART, 116 .maxsecsz = 4096 117}; 118 119SCHEME_DEFINE(mbr_scheme);
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