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/types.h> 31 #include <sys/apm.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 "mkimg.h" 39 #include "scheme.h" 40 41 #ifndef APM_ENT_TYPE_FREEBSD_NANDFS 42 #define APM_ENT_TYPE_FREEBSD_NANDFS "FreeBSD-nandfs" 43 #endif 44 45 static struct mkimg_alias apm_aliases[] = { 46 { ALIAS_FREEBSD, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD) }, 47 { ALIAS_FREEBSD_NANDFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_NANDFS) }, 48 { ALIAS_FREEBSD_SWAP, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_SWAP) }, 49 { ALIAS_FREEBSD_UFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_UFS) }, 50 { ALIAS_FREEBSD_VINUM, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_VINUM) }, 51 { ALIAS_FREEBSD_ZFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_ZFS) }, 52 { ALIAS_NONE, 0 } 53 }; 54 55 static u_int 56 apm_metadata(u_int where) 57 { 58 u_int secs; 59 60 secs = (where == SCHEME_META_IMG_START) ? nparts + 2 : 0; 61 return (secs); 62 } 63 64 static int 65 apm_write(int fd __unused, lba_t imgsz __unused, void *bootcode __unused) 66 { 67 u_char *buf; 68 struct apm_ddr *ddr; 69 struct apm_ent *ent; 70 struct part *part; 71 ssize_t nbytes; 72 int error; 73 74 buf = calloc(nparts + 2, secsz); 75 if (buf == NULL) 76 return (ENOMEM); 77 ddr = (void *)buf; 78 be16enc(&ddr->ddr_sig, APM_DDR_SIG); 79 be16enc(&ddr->ddr_blksize, secsz); 80 be32enc(&ddr->ddr_blkcount, imgsz); 81 82 /* partition entry for the partition table itself. */ 83 ent = (void *)(buf + secsz); 84 be16enc(&ent->ent_sig, APM_ENT_SIG); 85 be32enc(&ent->ent_pmblkcnt, nparts + 1); 86 be32enc(&ent->ent_start, 1); 87 be32enc(&ent->ent_size, nparts + 1); 88 strcpy(ent->ent_type, APM_ENT_TYPE_SELF); 89 strcpy(ent->ent_name, "Apple"); 90 91 STAILQ_FOREACH(part, &partlist, link) { 92 ent = (void *)(buf + (part->index + 2) * secsz); 93 be16enc(&ent->ent_sig, APM_ENT_SIG); 94 be32enc(&ent->ent_pmblkcnt, nparts + 1); 95 be32enc(&ent->ent_start, part->block); 96 be32enc(&ent->ent_size, part->size); 97 strcpy(ent->ent_type, ALIAS_TYPE2PTR(part->type)); 98 if (part->label != NULL) 99 strcpy(ent->ent_name, part->label); 100 } 101 102 error = mkimg_seek(fd, 0); 103 if (error == 0) { 104 nbytes = (nparts + 2) * secsz; 105 if (write(fd, buf, nbytes) != nbytes) 106 error = errno; 107 } 108 free(buf); 109 return (error); 110 } 111 112 static struct mkimg_scheme apm_scheme = { 113 .name = "apm", 114 .description = "Apple Partition Map", 115 .aliases = apm_aliases, 116 .metadata = apm_metadata, 117 .write = apm_write, 118 .nparts = 4096, 119 .labellen = APM_ENT_NAMELEN - 1, 120 .maxsecsz = 4096 121 }; 122 123 SCHEME_DEFINE(apm_scheme); 124