1 /*- 2 * Copyright (c) 2011 Nathan Whitehorn 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 * $FreeBSD$ 27 */ 28 29 #include <sys/types.h> 30 #include <sys/sysctl.h> 31 #include <string.h> 32 33 #include "partedit.h" 34 35 static char platform[255] = ""; 36 static const char *platform_sysctl = "machdep.bootmethod"; 37 38 const char * 39 default_scheme(void) { 40 return ("GPT"); 41 } 42 43 int 44 is_scheme_bootable(const char *part_type) { 45 size_t platlen = sizeof(platform); 46 if (strlen(platform) == 0) 47 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1); 48 49 if (strcmp(part_type, "GPT") == 0) 50 return (1); 51 if (strcmp(platform, "BIOS") == 0) { 52 if (strcmp(part_type, "BSD") == 0) 53 return (1); 54 if (strcmp(part_type, "MBR") == 0) 55 return (1); 56 } 57 58 return (0); 59 } 60 61 int 62 is_fs_bootable(const char *part_type, const char *fs) { 63 size_t platlen = sizeof(platform); 64 if (strlen(platform) == 0) 65 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1); 66 67 if (strcmp(fs, "freebsd-ufs") == 0) 68 return (1); 69 70 if (strcmp(fs, "freebsd-zfs") == 0 && strcmp(platform, "BIOS") == 0) 71 return (1); 72 73 return (0); 74 } 75 76 size_t 77 bootpart_size(const char *scheme) { 78 size_t platlen = sizeof(platform); 79 if (strlen(platform) == 0) 80 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1); 81 82 /* No partcode except for GPT */ 83 if (strcmp(scheme, "GPT") != 0) 84 return (0); 85 86 if (strcmp(platform, "BIOS") == 0) 87 return (512*1024); 88 else 89 return (800*1024); 90 91 return (0); 92 } 93 94 const char * 95 bootpart_type(const char *scheme) { 96 size_t platlen = sizeof(platform); 97 if (strlen(platform) == 0) 98 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1); 99 100 if (strcmp(platform, "UEFI") == 0) 101 return ("efi"); 102 103 return ("freebsd-boot"); 104 } 105 106 const char * 107 bootcode_path(const char *part_type) { 108 size_t platlen = sizeof(platform); 109 if (strlen(platform) == 0) 110 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1); 111 if (strcmp(platform, "UEFI") == 0) 112 return (NULL); 113 114 if (strcmp(part_type, "GPT") == 0) 115 return ("/boot/pmbr"); 116 if (strcmp(part_type, "MBR") == 0) 117 return ("/boot/mbr"); 118 if (strcmp(part_type, "BSD") == 0) 119 return ("/boot/boot"); 120 121 return (NULL); 122 } 123 124 const char * 125 partcode_path(const char *part_type, const char *fs_type) { 126 size_t platlen = sizeof(platform); 127 if (strlen(platform) == 0) 128 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1); 129 130 if (strcmp(part_type, "GPT") == 0) { 131 if (strcmp(platform, "UEFI") == 0) 132 return ("/boot/boot1.efifat"); 133 else if (strcmp(fs_type, "zfs") == 0) 134 return ("/boot/gptzfsboot"); 135 else 136 return ("/boot/gptboot"); 137 } 138 139 /* No partcode except for GPT */ 140 return (NULL); 141 } 142 143