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 /* Keep the following last */ 70 G_PART_ALIAS_COUNT 71 }; 72 73 const char *g_part_alias_name(enum g_part_alias); 74 75 /* G_PART scheme (KOBJ class). */ 76 struct g_part_scheme { 77 KOBJ_CLASS_FIELDS; 78 size_t gps_entrysz; 79 int gps_minent; 80 int gps_maxent; 81 int gps_bootcodesz; 82 TAILQ_ENTRY(g_part_scheme) scheme_list; 83 }; 84 85 struct g_part_entry { 86 LIST_ENTRY(g_part_entry) gpe_entry; 87 struct g_provider *gpe_pp; /* Corresponding provider. */ 88 off_t gpe_offset; /* Byte offset. */ 89 quad_t gpe_start; /* First LBA of partition. */ 90 quad_t gpe_end; /* Last LBA of partition. */ 91 int gpe_index; 92 int gpe_created:1; /* Entry is newly created. */ 93 int gpe_deleted:1; /* Entry has been deleted. */ 94 int gpe_modified:1; /* Entry has been modified. */ 95 int gpe_internal:1; /* Entry is not a used entry. */ 96 }; 97 98 /* G_PART table (KOBJ instance). */ 99 struct g_part_table { 100 KOBJ_FIELDS; 101 struct g_part_scheme *gpt_scheme; 102 struct g_geom *gpt_gp; 103 LIST_HEAD(, g_part_entry) gpt_entry; 104 quad_t gpt_first; /* First allocatable LBA */ 105 quad_t gpt_last; /* Last allocatable LBA */ 106 int gpt_entries; 107 /* 108 * gpt_smhead and gpt_smtail are bitmaps representing the first 109 * 32 sectors on the disk (gpt_smhead) and the last 32 sectors 110 * on the disk (gpt_smtail). These maps are used by the commit 111 * verb to clear sectors previously used by a scheme after the 112 * partitioning scheme has been destroyed. 113 */ 114 uint32_t gpt_smhead; 115 uint32_t gpt_smtail; 116 /* 117 * gpt_sectors and gpt_heads are the fixed or synchesized number 118 * of sectors per track and heads (resp) that make up a disks 119 * geometry. This is to support partitioning schemes as well as 120 * file systems that work on a geometry. The MBR scheme and the 121 * MS-DOS (FAT) file system come to mind. 122 * We keep track of whether the geometry is fixed or synchesized 123 * so that a partitioning scheme can correct the synthesized 124 * geometry, based on the on-disk metadata. 125 */ 126 uint32_t gpt_sectors; 127 uint32_t gpt_heads; 128 129 int gpt_depth; /* Sub-partitioning level. */ 130 int gpt_isleaf:1; /* Cannot be sub-partitioned. */ 131 int gpt_created:1; /* Newly created. */ 132 int gpt_modified:1; /* Table changes have been made. */ 133 int gpt_opened:1; /* Permissions obtained. */ 134 int gpt_fixgeom:1; /* Geometry is fixed. */ 135 int gpt_corrupt:1; /* Table is corrupt. */ 136 }; 137 138 struct g_part_entry *g_part_new_entry(struct g_part_table *, int, quad_t, 139 quad_t); 140 141 enum g_part_ctl { 142 G_PART_CTL_NONE, 143 G_PART_CTL_ADD, 144 G_PART_CTL_BOOTCODE, 145 G_PART_CTL_COMMIT, 146 G_PART_CTL_CREATE, 147 G_PART_CTL_DELETE, 148 G_PART_CTL_DESTROY, 149 G_PART_CTL_MODIFY, 150 G_PART_CTL_MOVE, 151 G_PART_CTL_RECOVER, 152 G_PART_CTL_RESIZE, 153 G_PART_CTL_SET, 154 G_PART_CTL_UNDO, 155 G_PART_CTL_UNSET 156 }; 157 158 /* G_PART ctlreq parameters. */ 159 #define G_PART_PARM_ENTRIES 0x0001 160 #define G_PART_PARM_FLAGS 0x0002 161 #define G_PART_PARM_GEOM 0x0004 162 #define G_PART_PARM_INDEX 0x0008 163 #define G_PART_PARM_LABEL 0x0010 164 #define G_PART_PARM_OUTPUT 0x0020 165 #define G_PART_PARM_PROVIDER 0x0040 166 #define G_PART_PARM_SCHEME 0x0080 167 #define G_PART_PARM_SIZE 0x0100 168 #define G_PART_PARM_START 0x0200 169 #define G_PART_PARM_TYPE 0x0400 170 #define G_PART_PARM_VERSION 0x0800 171 #define G_PART_PARM_BOOTCODE 0x1000 172 #define G_PART_PARM_ATTRIB 0x2000 173 #define G_PART_PARM_FORCE 0x4000 174 175 struct g_part_parms { 176 unsigned int gpp_parms; 177 unsigned int gpp_entries; 178 const char *gpp_flags; 179 struct g_geom *gpp_geom; 180 unsigned int gpp_index; 181 const char *gpp_label; 182 struct g_provider *gpp_provider; 183 struct g_part_scheme *gpp_scheme; 184 quad_t gpp_size; 185 quad_t gpp_start; 186 const char *gpp_type; 187 unsigned int gpp_version; 188 const void *gpp_codeptr; 189 unsigned int gpp_codesize; 190 const char *gpp_attrib; 191 unsigned int gpp_force; 192 }; 193 194 void g_part_geometry_heads(off_t, u_int, off_t *, u_int *); 195 196 int g_part_modevent(module_t, int, struct g_part_scheme *); 197 198 #define G_PART_SCHEME_DECLARE(name) \ 199 static int name##_modevent(module_t mod, int tp, void *d) \ 200 { \ 201 return (g_part_modevent(mod, tp, d)); \ 202 } \ 203 static moduledata_t name##_mod = { \ 204 #name, \ 205 name##_modevent, \ 206 &name##_scheme \ 207 }; \ 208 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_ANY) 209 210 #endif /* !_GEOM_PART_H_ */ 211