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> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/errno.h> 31 #include <stdint.h> 32 #include <stdlib.h> 33 #include <string.h> 34 #include <unistd.h> 35 36 #include <apm.h> 37 38 #include "endian.h" 39 #include "image.h" 40 #include "mkimg.h" 41 #include "scheme.h" 42 43 static struct mkimg_alias apm_aliases[] = { 44 { ALIAS_FREEBSD, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD) }, 45 { ALIAS_FREEBSD_BOOT, ALIAS_PTR2TYPE(APM_ENT_TYPE_APPLE_BOOT) }, 46 { ALIAS_FREEBSD_NANDFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_NANDFS) }, 47 { ALIAS_FREEBSD_SWAP, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_SWAP) }, 48 { ALIAS_FREEBSD_UFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_UFS) }, 49 { ALIAS_FREEBSD_VINUM, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_VINUM) }, 50 { ALIAS_FREEBSD_ZFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_ZFS) }, 51 { ALIAS_NONE, 0 } 52 }; 53 54 static lba_t 55 apm_metadata(u_int where, lba_t blk) 56 { 57 58 blk += (where == SCHEME_META_IMG_START) ? nparts + 2 : 0; 59 return (round_block(blk)); 60 } 61 62 static int 63 apm_write(lba_t imgsz, void *bootcode __unused) 64 { 65 u_char *buf; 66 struct apm_ddr *ddr; 67 struct apm_ent *ent; 68 struct part *part; 69 int error; 70 71 buf = calloc(nparts + 2, secsz); 72 if (buf == NULL) 73 return (ENOMEM); 74 ddr = (void *)buf; 75 be16enc(&ddr->ddr_sig, APM_DDR_SIG); 76 be16enc(&ddr->ddr_blksize, secsz); 77 be32enc(&ddr->ddr_blkcount, imgsz); 78 79 /* partition entry for the partition table itself. */ 80 ent = (void *)(buf + secsz); 81 be16enc(&ent->ent_sig, APM_ENT_SIG); 82 be32enc(&ent->ent_pmblkcnt, nparts + 1); 83 be32enc(&ent->ent_start, 1); 84 be32enc(&ent->ent_size, nparts + 1); 85 strncpy(ent->ent_type, APM_ENT_TYPE_SELF, sizeof(ent->ent_type)); 86 strncpy(ent->ent_name, "Apple", sizeof(ent->ent_name)); 87 88 TAILQ_FOREACH(part, &partlist, link) { 89 ent = (void *)(buf + (part->index + 2) * secsz); 90 be16enc(&ent->ent_sig, APM_ENT_SIG); 91 be32enc(&ent->ent_pmblkcnt, nparts + 1); 92 be32enc(&ent->ent_start, part->block); 93 be32enc(&ent->ent_size, part->size); 94 strncpy(ent->ent_type, ALIAS_TYPE2PTR(part->type), 95 sizeof(ent->ent_type)); 96 if (part->label != NULL) 97 strncpy(ent->ent_name, part->label, 98 sizeof(ent->ent_name)); 99 } 100 101 error = image_write(0, buf, nparts + 2); 102 free(buf); 103 return (error); 104 } 105 106 static struct mkimg_scheme apm_scheme = { 107 .name = "apm", 108 .description = "Apple Partition Map", 109 .aliases = apm_aliases, 110 .metadata = apm_metadata, 111 .write = apm_write, 112 .nparts = 4096, 113 .labellen = APM_ENT_NAMELEN - 1, 114 .maxsecsz = 4096 115 }; 116 117 SCHEME_DEFINE(apm_scheme); 118