g_part.h revision 268091
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: stable/10/sys/geom/part/g_part.h 268091 2014-07-01 13:29:17Z ae $ 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 38enum 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_NANDFS, /* A FreeBSD nandfs partition entry. */ 50 G_PART_ALIAS_FREEBSD_SWAP, /* A swap partition entry. */ 51 G_PART_ALIAS_FREEBSD_UFS, /* A UFS/UFS2 file system entry. */ 52 G_PART_ALIAS_FREEBSD_VINUM, /* A Vinum partition entry. */ 53 G_PART_ALIAS_FREEBSD_ZFS, /* A ZFS file system entry. */ 54 G_PART_ALIAS_MBR, /* A MBR (extended) partition entry. */ 55 G_PART_ALIAS_LINUX_DATA, /* A Linux data partition entry. */ 56 G_PART_ALIAS_LINUX_LVM, /* A Linux LVM partition entry. */ 57 G_PART_ALIAS_LINUX_RAID, /* A Linux RAID partition entry. */ 58 G_PART_ALIAS_LINUX_SWAP, /* A Linux swap partition entry. */ 59 G_PART_ALIAS_MS_BASIC_DATA, /* A Microsoft Data part. entry. */ 60 G_PART_ALIAS_MS_LDM_DATA, /* A Microsoft LDM Data part. entry. */ 61 G_PART_ALIAS_MS_LDM_METADATA, /* A Microsoft LDM Metadata entry. */ 62 G_PART_ALIAS_MS_RESERVED, /* A Microsoft Reserved part. entry. */ 63 G_PART_ALIAS_MS_NTFS, /* A Microsoft NTFS partition entry */ 64 G_PART_ALIAS_NETBSD_CCD, /* A NetBSD CCD partition entry. */ 65 G_PART_ALIAS_NETBSD_CGD, /* A NetBSD CGD partition entry. */ 66 G_PART_ALIAS_NETBSD_FFS, /* A NetBSD FFS partition entry. */ 67 G_PART_ALIAS_NETBSD_RAID, /* A NetBSD RAID partition entry. */ 68 G_PART_ALIAS_NETBSD_SWAP, /* A NetBSD swap partition entry. */ 69 G_PART_ALIAS_NETBSD_LFS, /* A NetBSD LFS partition entry. */ 70 G_PART_ALIAS_EBR, /* A EBR partition entry. */ 71 G_PART_ALIAS_MS_FAT16, /* A Microsoft FAT16 partition entry. */ 72 G_PART_ALIAS_MS_FAT32, /* A Microsoft FAT32 partition entry. */ 73 G_PART_ALIAS_BIOS_BOOT, /* A GRUB 2 boot partition entry. */ 74 G_PART_ALIAS_VMFS, /* A VMware VMFS partition entry */ 75 G_PART_ALIAS_VMKDIAG, /* A VMware vmkDiagnostic partition entry */ 76 G_PART_ALIAS_VMRESERVED, /* A VMware reserved partition entry */ 77 G_PART_ALIAS_VMVSANHDR, /* A VMware vSAN header partition entry */ 78 G_PART_ALIAS_DFBSD, /* A DfBSD label32 partition entry */ 79 G_PART_ALIAS_DFBSD64, /* A DfBSD label64 partition entry */ 80 G_PART_ALIAS_DFBSD_SWAP, /* A DfBSD swap partition entry */ 81 G_PART_ALIAS_DFBSD_UFS, /* A DfBSD UFS partition entry */ 82 G_PART_ALIAS_DFBSD_VINUM, /* A DfBSD Vinum partition entry */ 83 G_PART_ALIAS_DFBSD_CCD, /* A DfBSD CCD partition entry */ 84 G_PART_ALIAS_DFBSD_LEGACY, /* A DfBSD legacy partition entry */ 85 G_PART_ALIAS_DFBSD_HAMMER, /* A DfBSD HAMMER FS partition entry */ 86 G_PART_ALIAS_DFBSD_HAMMER2, /* A DfBSD HAMMER2 FS partition entry */ 87 /* Keep the following last */ 88 G_PART_ALIAS_COUNT 89}; 90 91const char *g_part_alias_name(enum g_part_alias); 92 93/* G_PART scheme (KOBJ class). */ 94struct g_part_scheme { 95 KOBJ_CLASS_FIELDS; 96 size_t gps_entrysz; 97 int gps_minent; 98 int gps_maxent; 99 int gps_bootcodesz; 100 TAILQ_ENTRY(g_part_scheme) scheme_list; 101}; 102 103struct g_part_entry { 104 LIST_ENTRY(g_part_entry) gpe_entry; 105 struct g_provider *gpe_pp; /* Corresponding provider. */ 106 off_t gpe_offset; /* Byte offset. */ 107 quad_t gpe_start; /* First LBA of partition. */ 108 quad_t gpe_end; /* Last LBA of partition. */ 109 int gpe_index; 110 int gpe_created:1; /* Entry is newly created. */ 111 int gpe_deleted:1; /* Entry has been deleted. */ 112 int gpe_modified:1; /* Entry has been modified. */ 113 int gpe_internal:1; /* Entry is not a used entry. */ 114}; 115 116/* G_PART table (KOBJ instance). */ 117struct g_part_table { 118 KOBJ_FIELDS; 119 struct g_part_scheme *gpt_scheme; 120 struct g_geom *gpt_gp; 121 LIST_HEAD(, g_part_entry) gpt_entry; 122 quad_t gpt_first; /* First allocatable LBA */ 123 quad_t gpt_last; /* Last allocatable LBA */ 124 int gpt_entries; 125 /* 126 * gpt_smhead and gpt_smtail are bitmaps representing the first 127 * 32 sectors on the disk (gpt_smhead) and the last 32 sectors 128 * on the disk (gpt_smtail). These maps are used by the commit 129 * verb to clear sectors previously used by a scheme after the 130 * partitioning scheme has been destroyed. 131 */ 132 uint32_t gpt_smhead; 133 uint32_t gpt_smtail; 134 /* 135 * gpt_sectors and gpt_heads are the fixed or synchesized number 136 * of sectors per track and heads (resp) that make up a disks 137 * geometry. This is to support partitioning schemes as well as 138 * file systems that work on a geometry. The MBR scheme and the 139 * MS-DOS (FAT) file system come to mind. 140 * We keep track of whether the geometry is fixed or synchesized 141 * so that a partitioning scheme can correct the synthesized 142 * geometry, based on the on-disk metadata. 143 */ 144 uint32_t gpt_sectors; 145 uint32_t gpt_heads; 146 147 int gpt_depth; /* Sub-partitioning level. */ 148 int gpt_isleaf:1; /* Cannot be sub-partitioned. */ 149 int gpt_created:1; /* Newly created. */ 150 int gpt_modified:1; /* Table changes have been made. */ 151 int gpt_opened:1; /* Permissions obtained. */ 152 int gpt_fixgeom:1; /* Geometry is fixed. */ 153 int gpt_corrupt:1; /* Table is corrupt. */ 154}; 155 156struct g_part_entry *g_part_new_entry(struct g_part_table *, int, quad_t, 157 quad_t); 158 159enum g_part_ctl { 160 G_PART_CTL_NONE, 161 G_PART_CTL_ADD, 162 G_PART_CTL_BOOTCODE, 163 G_PART_CTL_COMMIT, 164 G_PART_CTL_CREATE, 165 G_PART_CTL_DELETE, 166 G_PART_CTL_DESTROY, 167 G_PART_CTL_MODIFY, 168 G_PART_CTL_MOVE, 169 G_PART_CTL_RECOVER, 170 G_PART_CTL_RESIZE, 171 G_PART_CTL_SET, 172 G_PART_CTL_UNDO, 173 G_PART_CTL_UNSET 174}; 175 176/* G_PART ctlreq parameters. */ 177#define G_PART_PARM_ENTRIES 0x0001 178#define G_PART_PARM_FLAGS 0x0002 179#define G_PART_PARM_GEOM 0x0004 180#define G_PART_PARM_INDEX 0x0008 181#define G_PART_PARM_LABEL 0x0010 182#define G_PART_PARM_OUTPUT 0x0020 183#define G_PART_PARM_PROVIDER 0x0040 184#define G_PART_PARM_SCHEME 0x0080 185#define G_PART_PARM_SIZE 0x0100 186#define G_PART_PARM_START 0x0200 187#define G_PART_PARM_TYPE 0x0400 188#define G_PART_PARM_VERSION 0x0800 189#define G_PART_PARM_BOOTCODE 0x1000 190#define G_PART_PARM_ATTRIB 0x2000 191#define G_PART_PARM_FORCE 0x4000 192 193struct g_part_parms { 194 unsigned int gpp_parms; 195 unsigned int gpp_entries; 196 const char *gpp_flags; 197 struct g_geom *gpp_geom; 198 unsigned int gpp_index; 199 const char *gpp_label; 200 struct g_provider *gpp_provider; 201 struct g_part_scheme *gpp_scheme; 202 quad_t gpp_size; 203 quad_t gpp_start; 204 const char *gpp_type; 205 unsigned int gpp_version; 206 const void *gpp_codeptr; 207 unsigned int gpp_codesize; 208 const char *gpp_attrib; 209 unsigned int gpp_force; 210}; 211 212void g_part_geometry_heads(off_t, u_int, off_t *, u_int *); 213 214int g_part_modevent(module_t, int, struct g_part_scheme *); 215 216#define G_PART_SCHEME_DECLARE(name) \ 217 static int name##_modevent(module_t mod, int tp, void *d) \ 218 { \ 219 return (g_part_modevent(mod, tp, d)); \ 220 } \ 221 static moduledata_t name##_mod = { \ 222 #name, \ 223 name##_modevent, \ 224 &name##_scheme \ 225 }; \ 226 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_ANY); \ 227 MODULE_DEPEND(name, g_part, 0, 0, 0) 228 229#endif /* !_GEOM_PART_H_ */ 230