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_NETBSD_CCD, /* A NetBSD CCD partition entry. */ 63 G_PART_ALIAS_NETBSD_CGD, /* A NetBSD CGD partition entry. */ 64 G_PART_ALIAS_NETBSD_FFS, /* A NetBSD FFS partition entry. */ 65 G_PART_ALIAS_NETBSD_RAID, /* A NetBSD RAID partition entry. */ 66 G_PART_ALIAS_NETBSD_SWAP, /* A NetBSD swap partition entry. */ 67 G_PART_ALIAS_NETBSD_LFS, /* A NetBSD LFS partition entry. */ 68 /* Keep the following last */ 69 G_PART_ALIAS_COUNT 70 }; 71 72 const char *g_part_alias_name(enum g_part_alias); 73 74 /* G_PART scheme (KOBJ class). */ 75 struct g_part_scheme { 76 KOBJ_CLASS_FIELDS; 77 size_t gps_entrysz; 78 int gps_minent; 79 int gps_maxent; 80 int gps_bootcodesz; 81 TAILQ_ENTRY(g_part_scheme) scheme_list; 82 }; 83 84 struct g_part_entry { 85 LIST_ENTRY(g_part_entry) gpe_entry; 86 struct g_provider *gpe_pp; /* Corresponding provider. */ 87 off_t gpe_offset; /* Byte offset. */ 88 quad_t gpe_start; /* First LBA of partition. */ 89 quad_t gpe_end; /* Last LBA of partition. */ 90 int gpe_index; 91 int gpe_created:1; /* Entry is newly created. */ 92 int gpe_deleted:1; /* Entry has been deleted. */ 93 int gpe_modified:1; /* Entry has been modified. */ 94 int gpe_internal:1; /* Entry is not a used entry. */ 95 }; 96 97 /* G_PART table (KOBJ instance). */ 98 struct g_part_table { 99 KOBJ_FIELDS; 100 struct g_part_scheme *gpt_scheme; 101 struct g_geom *gpt_gp; 102 LIST_HEAD(, g_part_entry) gpt_entry; 103 quad_t gpt_first; /* First allocatable LBA */ 104 quad_t gpt_last; /* Last allocatable LBA */ 105 int gpt_entries; 106 /* 107 * gpt_smhead and gpt_smtail are bitmaps representing the first 108 * 32 sectors on the disk (gpt_smhead) and the last 32 sectors 109 * on the disk (gpt_smtail). These maps are used by the commit 110 * verb to clear sectors previously used by a scheme after the 111 * partitioning scheme has been destroyed. 112 */ 113 uint32_t gpt_smhead; 114 uint32_t gpt_smtail; 115 /* 116 * gpt_sectors and gpt_heads are the fixed or synchesized number 117 * of sectors per track and heads (resp) that make up a disks 118 * geometry. This is to support partitioning schemes as well as 119 * file systems that work on a geometry. The MBR scheme and the 120 * MS-DOS (FAT) file system come to mind. 121 * We keep track of whether the geometry is fixed or synchesized 122 * so that a partitioning scheme can correct the synthesized 123 * geometry, based on the on-disk metadata. 124 */ 125 uint32_t gpt_sectors; 126 uint32_t gpt_heads; 127 128 int gpt_depth; /* Sub-partitioning level. */ 129 int gpt_isleaf:1; /* Cannot be sub-partitioned. */ 130 int gpt_created:1; /* Newly created. */ 131 int gpt_modified:1; /* Table changes have been made. */ 132 int gpt_opened:1; /* Permissions obtained. */ 133 int gpt_fixgeom:1; /* Geometry is fixed. */ 134 }; 135 136 struct g_part_entry *g_part_new_entry(struct g_part_table *, int, quad_t, 137 quad_t); 138 139 enum g_part_ctl { 140 G_PART_CTL_NONE, 141 G_PART_CTL_ADD, 142 G_PART_CTL_BOOTCODE, 143 G_PART_CTL_COMMIT, 144 G_PART_CTL_CREATE, 145 G_PART_CTL_DELETE, 146 G_PART_CTL_DESTROY, 147 G_PART_CTL_MODIFY, 148 G_PART_CTL_MOVE, 149 G_PART_CTL_RECOVER, 150 G_PART_CTL_RESIZE, 151 G_PART_CTL_SET, 152 G_PART_CTL_UNDO, 153 G_PART_CTL_UNSET 154 }; 155 156 /* G_PART ctlreq parameters. */ 157 #define G_PART_PARM_ENTRIES 0x0001 158 #define G_PART_PARM_FLAGS 0x0002 159 #define G_PART_PARM_GEOM 0x0004 160 #define G_PART_PARM_INDEX 0x0008 161 #define G_PART_PARM_LABEL 0x0010 162 #define G_PART_PARM_OUTPUT 0x0020 163 #define G_PART_PARM_PROVIDER 0x0040 164 #define G_PART_PARM_SCHEME 0x0080 165 #define G_PART_PARM_SIZE 0x0100 166 #define G_PART_PARM_START 0x0200 167 #define G_PART_PARM_TYPE 0x0400 168 #define G_PART_PARM_VERSION 0x0800 169 #define G_PART_PARM_BOOTCODE 0x1000 170 #define G_PART_PARM_ATTRIB 0x2000 171 172 struct g_part_parms { 173 unsigned int gpp_parms; 174 unsigned int gpp_entries; 175 const char *gpp_flags; 176 struct g_geom *gpp_geom; 177 unsigned int gpp_index; 178 const char *gpp_label; 179 struct g_provider *gpp_provider; 180 struct g_part_scheme *gpp_scheme; 181 quad_t gpp_size; 182 quad_t gpp_start; 183 const char *gpp_type; 184 unsigned int gpp_version; 185 const void *gpp_codeptr; 186 unsigned int gpp_codesize; 187 const char *gpp_attrib; 188 }; 189 190 void g_part_geometry_heads(off_t, u_int, off_t *, u_int *); 191 192 int g_part_modevent(module_t, int, struct g_part_scheme *); 193 194 #define G_PART_SCHEME_DECLARE(name) \ 195 static int name##_modevent(module_t mod, int tp, void *d) \ 196 { \ 197 return (g_part_modevent(mod, tp, d)); \ 198 } \ 199 static moduledata_t name##_mod = { \ 200 #name, \ 201 name##_modevent, \ 202 &name##_scheme \ 203 }; \ 204 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_ANY) 205 206 #endif /* !_GEOM_PART_H_ */ 207