1 /*- 2 * Copyright (c) 2013,2014 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/linker_set.h> 32 #include <sys/queue.h> 33 #include <sys/stat.h> 34 #include <err.h> 35 #include <errno.h> 36 #include <stdint.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <unistd.h> 40 41 #include "image.h" 42 #include "mkimg.h" 43 #include "scheme.h" 44 45 static struct { 46 const char *name; 47 enum alias alias; 48 } scheme_alias[] = { 49 { "ebr", ALIAS_EBR }, 50 { "efi", ALIAS_EFI }, 51 { "fat32", ALIAS_FAT32 }, 52 { "freebsd", ALIAS_FREEBSD }, 53 { "freebsd-boot", ALIAS_FREEBSD_BOOT }, 54 { "freebsd-nandfs", ALIAS_FREEBSD_NANDFS }, 55 { "freebsd-swap", ALIAS_FREEBSD_SWAP }, 56 { "freebsd-ufs", ALIAS_FREEBSD_UFS }, 57 { "freebsd-vinum", ALIAS_FREEBSD_VINUM }, 58 { "freebsd-zfs", ALIAS_FREEBSD_ZFS }, 59 { "mbr", ALIAS_MBR }, 60 { NULL, ALIAS_NONE } /* Keep last! */ 61 }; 62 63 static struct mkimg_scheme *scheme; 64 static void *bootcode; 65 66 static enum alias 67 scheme_parse_alias(const char *name) 68 { 69 u_int idx; 70 71 idx = 0; 72 while (scheme_alias[idx].name != NULL) { 73 if (strcasecmp(scheme_alias[idx].name, name) == 0) 74 return (scheme_alias[idx].alias); 75 idx++; 76 } 77 return (ALIAS_NONE); 78 } 79 80 int 81 scheme_select(const char *spec) 82 { 83 struct mkimg_scheme *s, **iter; 84 85 SET_FOREACH(iter, schemes) { 86 s = *iter; 87 if (strcasecmp(spec, s->name) == 0) { 88 scheme = s; 89 return (0); 90 } 91 } 92 return (EINVAL); 93 } 94 95 struct mkimg_scheme * 96 scheme_selected(void) 97 { 98 99 return (scheme); 100 } 101 102 int 103 scheme_bootcode(int fd) 104 { 105 struct stat sb; 106 int error; 107 108 if (scheme->bootcode == 0) 109 return (ENXIO); 110 111 error = fstat(fd, &sb); 112 if (error) 113 return (error); 114 if (sb.st_size > scheme->bootcode) 115 return (EFBIG); 116 117 bootcode = malloc(scheme->bootcode); 118 if (bootcode == NULL) 119 return (ENOMEM); 120 memset(bootcode, 0, scheme->bootcode); 121 if (read(fd, bootcode, sb.st_size) != sb.st_size) { 122 free(bootcode); 123 bootcode = NULL; 124 return (errno); 125 } 126 return (0); 127 } 128 129 int 130 scheme_check_part(struct part *p) 131 { 132 struct mkimg_alias *iter; 133 enum alias alias; 134 135 /* Check the partition type alias */ 136 alias = scheme_parse_alias(p->alias); 137 if (alias == ALIAS_NONE) 138 return (EINVAL); 139 140 iter = scheme->aliases; 141 while (iter->alias != ALIAS_NONE) { 142 if (alias == iter->alias) 143 break; 144 iter++; 145 } 146 if (iter->alias == ALIAS_NONE) 147 return (EINVAL); 148 p->type = iter->type; 149 150 /* Validate the optional label. */ 151 if (p->label != NULL) { 152 if (strlen(p->label) > scheme->labellen) 153 return (EINVAL); 154 } 155 156 return (0); 157 } 158 159 u_int 160 scheme_max_parts(void) 161 { 162 163 return (scheme->nparts); 164 } 165 166 u_int 167 scheme_max_secsz(void) 168 { 169 170 return (scheme->maxsecsz); 171 } 172 173 lba_t 174 scheme_metadata(u_int where, lba_t start) 175 { 176 lba_t secs; 177 178 secs = scheme->metadata(where); 179 return (round_block(start + secs)); 180 } 181 182 int 183 scheme_write(lba_t end) 184 { 185 int error; 186 187 end = image_get_size(); 188 error = scheme->write(end, bootcode); 189 return (error); 190 } 191