1 /*- 2 * Copyright (c) 2006-2008 Marcel Moolenaar 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 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _GEOM_PART_H_ 30 #define _GEOM_PART_H_ 31 32 #define G_PART_TRACE(args) g_trace args 33 34 #define G_PART_PROBE_PRI_LOW -10 35 #define G_PART_PROBE_PRI_NORM -5 36 #define G_PART_PROBE_PRI_HIGH 0 37 38 enum g_part_alias { 39 G_PART_ALIAS_APPLE_BOOT, /* An Apple boot partition entry. */ 40 G_PART_ALIAS_APPLE_HFS, /* An HFS+ file system entry. */ 41 G_PART_ALIAS_APPLE_LABEL, /* An Apple label partition entry. */ 42 G_PART_ALIAS_APPLE_RAID, /* An Apple RAID partition entry. */ 43 G_PART_ALIAS_APPLE_RAID_OFFLINE,/* An Apple RAID (offline) part entry.*/ 44 G_PART_ALIAS_APPLE_TV_RECOVERY, /* An Apple TV recovery part entry. */ 45 G_PART_ALIAS_APPLE_UFS, /* An Apple UFS partition entry. */ 46 G_PART_ALIAS_EFI, /* A EFI system partition entry. */ 47 G_PART_ALIAS_FREEBSD, /* A BSD labeled partition entry. */ 48 G_PART_ALIAS_FREEBSD_BOOT, /* A FreeBSD boot partition entry. */ 49 G_PART_ALIAS_FREEBSD_SWAP, /* A swap partition entry. */ 50 G_PART_ALIAS_FREEBSD_UFS, /* A UFS/UFS2 file system entry. */ 51 G_PART_ALIAS_FREEBSD_VINUM, /* A Vinum partition entry. */ 52 G_PART_ALIAS_FREEBSD_ZFS, /* A ZFS file system entry. */ 53 G_PART_ALIAS_MBR, /* A MBR (extended) partition entry. */ 54 G_PART_ALIAS_LINUX_DATA, /* A Linux data partition entry. */ 55 G_PART_ALIAS_LINUX_LVM, /* A Linux LVM partition entry. */ 56 G_PART_ALIAS_LINUX_RAID, /* A Linux RAID partition entry. */ 57 G_PART_ALIAS_LINUX_SWAP, /* A Linux swap partition entry. */ 58 G_PART_ALIAS_MS_BASIC_DATA, /* A Microsoft Data part. entry. */ 59 G_PART_ALIAS_MS_LDM_DATA, /* A Microsoft LDM Data part. entry. */ 60 G_PART_ALIAS_MS_LDM_METADATA, /* A Microsoft LDM Metadata entry. */ 61 G_PART_ALIAS_MS_RESERVED, /* A Microsoft Reserved part. entry. */ 62 G_PART_ALIAS_MS_NTFS, /* A Microsoft NTFS partition entry */ 63 G_PART_ALIAS_NETBSD_CCD, /* A NetBSD CCD partition entry. */ 64 G_PART_ALIAS_NETBSD_CGD, /* A NetBSD CGD partition entry. */ 65 G_PART_ALIAS_NETBSD_FFS, /* A NetBSD FFS partition entry. */ 66 G_PART_ALIAS_NETBSD_RAID, /* A NetBSD RAID partition entry. */ 67 G_PART_ALIAS_NETBSD_SWAP, /* A NetBSD swap partition entry. */ 68 G_PART_ALIAS_NETBSD_LFS, /* A NetBSD LFS partition entry. */ 69 G_PART_ALIAS_EBR, /* A EBR partition entry. */ 70 G_PART_ALIAS_MS_FAT32, /* A Microsoft FAT32 partition entry. */ 71 G_PART_ALIAS_BIOS_BOOT, /* A GRUB 2 boot partition entry. */ 72 /* Keep the following last */ 73 G_PART_ALIAS_COUNT 74 }; 75 76 const char *g_part_alias_name(enum g_part_alias); 77 78 /* G_PART scheme (KOBJ class). */ 79 struct g_part_scheme { 80 KOBJ_CLASS_FIELDS; 81 size_t gps_entrysz; 82 int gps_minent; 83 int gps_maxent; 84 int gps_bootcodesz; 85 TAILQ_ENTRY(g_part_scheme) scheme_list; 86 }; 87 88 struct g_part_entry { 89 LIST_ENTRY(g_part_entry) gpe_entry; 90 struct g_provider *gpe_pp; /* Corresponding provider. */ 91 off_t gpe_offset; /* Byte offset. */ 92 quad_t gpe_start; /* First LBA of partition. */ 93 quad_t gpe_end; /* Last LBA of partition. */ 94 int gpe_index; 95 int gpe_created:1; /* Entry is newly created. */ 96 int gpe_deleted:1; /* Entry has been deleted. */ 97 int gpe_modified:1; /* Entry has been modified. */ 98 int gpe_internal:1; /* Entry is not a used entry. */ 99 }; 100 101 /* G_PART table (KOBJ instance). */ 102 struct g_part_table { 103 KOBJ_FIELDS; 104 struct g_part_scheme *gpt_scheme; 105 struct g_geom *gpt_gp; 106 LIST_HEAD(, g_part_entry) gpt_entry; 107 quad_t gpt_first; /* First allocatable LBA */ 108 quad_t gpt_last; /* Last allocatable LBA */ 109 int gpt_entries; 110 /* 111 * gpt_smhead and gpt_smtail are bitmaps representing the first 112 * 32 sectors on the disk (gpt_smhead) and the last 32 sectors 113 * on the disk (gpt_smtail). These maps are used by the commit 114 * verb to clear sectors previously used by a scheme after the 115 * partitioning scheme has been destroyed. 116 */ 117 uint32_t gpt_smhead; 118 uint32_t gpt_smtail; 119 /* 120 * gpt_sectors and gpt_heads are the fixed or synchesized number 121 * of sectors per track and heads (resp) that make up a disks 122 * geometry. This is to support partitioning schemes as well as 123 * file systems that work on a geometry. The MBR scheme and the 124 * MS-DOS (FAT) file system come to mind. 125 * We keep track of whether the geometry is fixed or synchesized 126 * so that a partitioning scheme can correct the synthesized 127 * geometry, based on the on-disk metadata. 128 */ 129 uint32_t gpt_sectors; 130 uint32_t gpt_heads; 131 132 int gpt_depth; /* Sub-partitioning level. */ 133 int gpt_isleaf:1; /* Cannot be sub-partitioned. */ 134 int gpt_created:1; /* Newly created. */ 135 int gpt_modified:1; /* Table changes have been made. */ 136 int gpt_opened:1; /* Permissions obtained. */ 137 int gpt_fixgeom:1; /* Geometry is fixed. */ 138 int gpt_corrupt:1; /* Table is corrupt. */ 139 }; 140 141 struct g_part_entry *g_part_new_entry(struct g_part_table *, int, quad_t, 142 quad_t); 143 144 enum g_part_ctl { 145 G_PART_CTL_NONE, 146 G_PART_CTL_ADD, 147 G_PART_CTL_BOOTCODE, 148 G_PART_CTL_COMMIT, 149 G_PART_CTL_CREATE, 150 G_PART_CTL_DELETE, 151 G_PART_CTL_DESTROY, 152 G_PART_CTL_MODIFY, 153 G_PART_CTL_MOVE, 154 G_PART_CTL_RECOVER, 155 G_PART_CTL_RESIZE, 156 G_PART_CTL_SET, 157 G_PART_CTL_UNDO, 158 G_PART_CTL_UNSET 159 }; 160 161 /* G_PART ctlreq parameters. */ 162 #define G_PART_PARM_ENTRIES 0x0001 163 #define G_PART_PARM_FLAGS 0x0002 164 #define G_PART_PARM_GEOM 0x0004 165 #define G_PART_PARM_INDEX 0x0008 166 #define G_PART_PARM_LABEL 0x0010 167 #define G_PART_PARM_OUTPUT 0x0020 168 #define G_PART_PARM_PROVIDER 0x0040 169 #define G_PART_PARM_SCHEME 0x0080 170 #define G_PART_PARM_SIZE 0x0100 171 #define G_PART_PARM_START 0x0200 172 #define G_PART_PARM_TYPE 0x0400 173 #define G_PART_PARM_VERSION 0x0800 174 #define G_PART_PARM_BOOTCODE 0x1000 175 #define G_PART_PARM_ATTRIB 0x2000 176 #define G_PART_PARM_FORCE 0x4000 177 178 struct g_part_parms { 179 unsigned int gpp_parms; 180 unsigned int gpp_entries; 181 const char *gpp_flags; 182 struct g_geom *gpp_geom; 183 unsigned int gpp_index; 184 const char *gpp_label; 185 struct g_provider *gpp_provider; 186 struct g_part_scheme *gpp_scheme; 187 quad_t gpp_size; 188 quad_t gpp_start; 189 const char *gpp_type; 190 unsigned int gpp_version; 191 const void *gpp_codeptr; 192 unsigned int gpp_codesize; 193 const char *gpp_attrib; 194 unsigned int gpp_force; 195 }; 196 197 void g_part_geometry_heads(off_t, u_int, off_t *, u_int *); 198 199 int g_part_modevent(module_t, int, struct g_part_scheme *); 200 201 #define G_PART_SCHEME_DECLARE(name) \ 202 static int name##_modevent(module_t mod, int tp, void *d) \ 203 { \ 204 return (g_part_modevent(mod, tp, d)); \ 205 } \ 206 static moduledata_t name##_mod = { \ 207 #name, \ 208 name##_modevent, \ 209 &name##_scheme \ 210 }; \ 211 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_ANY) 212 213 #endif /* !_GEOM_PART_H_ */ 214