2 * Copyright (c) 2006-2008 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
32 #define G_PART_TRACE(args) g_trace args
34 #define G_PART_PROBE_PRI_LOW -10
35 #define G_PART_PROBE_PRI_NORM -5
36 #define G_PART_PROBE_PRI_HIGH 0
39 G_PART_ALIAS_EFI, /* A EFI system partition entry. */
40 G_PART_ALIAS_FREEBSD, /* A BSD labeled partition entry. */
41 G_PART_ALIAS_FREEBSD_BOOT, /* A FreeBSD boot partition entry. */
42 G_PART_ALIAS_FREEBSD_SWAP, /* A swap partition entry. */
43 G_PART_ALIAS_FREEBSD_UFS, /* A UFS/UFS2 file system entry. */
44 G_PART_ALIAS_FREEBSD_VINUM, /* A Vinum partition entry. */
45 G_PART_ALIAS_FREEBSD_ZFS, /* A ZFS file system entry. */
46 G_PART_ALIAS_MBR, /* A MBR (extended) partition entry. */
47 /* Keep the following last */
51 const char *g_part_alias_name(enum g_part_alias);
53 /* G_PART scheme (KOBJ class). */
54 struct g_part_scheme {
60 TAILQ_ENTRY(g_part_scheme) scheme_list;
64 LIST_ENTRY(g_part_entry) gpe_entry;
65 struct g_provider *gpe_pp; /* Corresponding provider. */
66 off_t gpe_offset; /* Byte offset. */
67 quad_t gpe_start; /* First LBA of partition. */
68 quad_t gpe_end; /* Last LBA of partition. */
70 int gpe_created:1; /* Entry is newly created. */
71 int gpe_deleted:1; /* Entry has been deleted. */
72 int gpe_modified:1; /* Entry has been modified. */
73 int gpe_internal:1; /* Entry is not a used entry. */
76 /* G_PART table (KOBJ instance). */
79 struct g_part_scheme *gpt_scheme;
80 struct g_geom *gpt_gp;
81 LIST_HEAD(, g_part_entry) gpt_entry;
82 quad_t gpt_first; /* First allocatable LBA */
83 quad_t gpt_last; /* Last allocatable LBA */
86 * gpt_smhead and gpt_smtail are bitmaps representing the first
87 * 32 sectors on the disk (gpt_smhead) and the last 32 sectors
88 * on the disk (gpt_smtail). These maps are used by the commit
89 * verb to clear sectors previously used by a scheme after the
90 * partitioning scheme has been destroyed.
95 * gpt_sectors and gpt_heads are the fixed or synchesized number
96 * of sectors per track and heads (resp) that make up a disks
97 * geometry. This is to support partitioning schemes as well as
98 * file systems that work on a geometry. The MBR scheme and the
99 * MS-DOS (FAT) file system come to mind.
100 * We keep track of whether the geometry is fixed or synchesized
101 * so that a partitioning scheme can correct the synthesized
102 * geometry, based on the on-disk metadata.
104 uint32_t gpt_sectors;
107 int gpt_depth; /* Sub-partitioning level. */
108 int gpt_isleaf:1; /* Cannot be sub-partitioned. */
109 int gpt_created:1; /* Newly created. */
110 int gpt_modified:1; /* Table changes have been made. */
111 int gpt_opened:1; /* Permissions obtained. */
112 int gpt_fixgeom:1; /* Geometry is fixed. */
115 struct g_part_entry *g_part_new_entry(struct g_part_table *, int, quad_t,
135 /* G_PART ctlreq parameters. */
136 #define G_PART_PARM_ENTRIES 0x0001
137 #define G_PART_PARM_FLAGS 0x0002
138 #define G_PART_PARM_GEOM 0x0004
139 #define G_PART_PARM_INDEX 0x0008
140 #define G_PART_PARM_LABEL 0x0010
141 #define G_PART_PARM_OUTPUT 0x0020
142 #define G_PART_PARM_PROVIDER 0x0040
143 #define G_PART_PARM_SCHEME 0x0080
144 #define G_PART_PARM_SIZE 0x0100
145 #define G_PART_PARM_START 0x0200
146 #define G_PART_PARM_TYPE 0x0400
147 #define G_PART_PARM_VERSION 0x0800
148 #define G_PART_PARM_BOOTCODE 0x1000
149 #define G_PART_PARM_ATTRIB 0x2000
151 struct g_part_parms {
152 unsigned int gpp_parms;
153 unsigned int gpp_entries;
154 const char *gpp_flags;
155 struct g_geom *gpp_geom;
156 unsigned int gpp_index;
157 const char *gpp_label;
158 struct g_provider *gpp_provider;
159 struct g_part_scheme *gpp_scheme;
162 const char *gpp_type;
163 unsigned int gpp_version;
164 const void *gpp_codeptr;
165 unsigned int gpp_codesize;
166 const char *gpp_attrib;
169 void g_part_geometry_heads(off_t, u_int, off_t *, u_int *);
171 int g_part_modevent(module_t, int, struct g_part_scheme *);
173 #define G_PART_SCHEME_DECLARE(name) \
174 static int name##_modevent(module_t mod, int tp, void *d) \
176 return (g_part_modevent(mod, tp, d)); \
178 static moduledata_t name##_mod = { \
183 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_ANY)
185 #endif /* !_GEOM_PART_H_ */