1 #-
2 # Copyright (c) 2006-2009 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: releng/8.3/sys/geom/part/g_part_if.m 214975 2010-11-08 10:08:30Z ae $
27
28 #include <sys/param.h>
29 #include <sys/lock.h>
30 #include <sys/malloc.h>
31 #include <sys/mutex.h>
32 #include <sys/sbuf.h>
33 #include <sys/bus.h>
34 #include <machine/bus.h>
35 #include <sys/systm.h>
36 #include <geom/geom.h>
37 #include <geom/part/g_part.h>
38
39 # The G_PART scheme interface.
40
41 INTERFACE g_part;
42
43 # Default implementations of methods.
44 CODE {
45 static void
46 default_fullname(struct g_part_table *table,
47 struct g_part_entry *entry, struct sbuf *sb, const char *pfx)
48 {
49 char buf[32];
50
51 sbuf_printf(sb, "%s%s", pfx,
52 G_PART_NAME(table, entry, buf, sizeof(buf)));
53 }
54
55 static int
56 default_precheck(struct g_part_table *t __unused,
57 enum g_part_ctl r __unused, struct g_part_parms *p __unused)
58 {
59 return (0);
60 }
61
62 static int
63 default_resize(struct g_part_table *t __unused,
64 struct g_part_entry *e __unused, struct g_part_parms *p __unused)
65 {
66 return (ENOSYS);
67 }
68
69 static int
70 default_recover(struct g_part_table *t __unused)
71 {
72 return (ENOSYS);
73 }
74 };
75
76 # add() - scheme specific processing for the add verb.
77 METHOD int add {
78 struct g_part_table *table;
79 struct g_part_entry *entry;
80 struct g_part_parms *gpp;
81 };
82
83 # bootcode() - scheme specific processing for the bootcode verb.
84 METHOD int bootcode {
85 struct g_part_table *table;
86 struct g_part_parms *gpp;
87 };
88
89 # create() - scheme specific processing for the create verb.
90 METHOD int create {
91 struct g_part_table *table;
92 struct g_part_parms *gpp;
93 };
94
95 # destroy() - scheme specific processing for the destroy verb.
96 METHOD int destroy {
97 struct g_part_table *table;
98 struct g_part_parms *gpp;
99 };
100
101 # dumpconf()
102 METHOD void dumpconf {
103 struct g_part_table *table;
104 struct g_part_entry *entry;
105 struct sbuf *sb;
106 const char *indent;
107 };
108
109 # dumpto() - return whether the partiton can be used for kernel dumps.
110 METHOD int dumpto {
111 struct g_part_table *table;
112 struct g_part_entry *entry;
113 };
114
115 # fullname() - write the name of the given partition entry to the sbuf.
116 METHOD void fullname {
117 struct g_part_table *table;
118 struct g_part_entry *entry;
119 struct sbuf *sb;
120 const char *pfx;
121 } DEFAULT default_fullname;
122
123 # modify() - scheme specific processing for the modify verb.
124 METHOD int modify {
125 struct g_part_table *table;
126 struct g_part_entry *entry;
127 struct g_part_parms *gpp;
128 };
129
130 # resize() - scheme specific processing for the resize verb.
131 METHOD int resize {
132 struct g_part_table *table;
133 struct g_part_entry *entry;
134 struct g_part_parms *gpp;
135 } DEFAULT default_resize;
136
137 # name() - return the name of the given partition entry.
138 # Typical names are "p1", "s0" or "c".
139 METHOD const char * name {
140 struct g_part_table *table;
141 struct g_part_entry *entry;
142 char *buf;
143 size_t bufsz;
144 };
145
146 # precheck() - method to allow schemes to check the parameters given
147 # to the mentioned ctl request. This only applies to the requests that
148 # operate on a GEOM. In other words, it does not apply to the create
149 # request.
150 # It is allowed (intended actually) to change the parameters according
151 # to the schemes needs before they are used. Returning an error will
152 # terminate the request immediately.
153 METHOD int precheck {
154 struct g_part_table *table;
155 enum g_part_ctl req;
156 struct g_part_parms *gpp;
157 } DEFAULT default_precheck;
158
159 # probe() - probe the provider attached to the given consumer for the
160 # existence of the scheme implemented by the G_PART interface handler.
161 METHOD int probe {
162 struct g_part_table *table;
163 struct g_consumer *cp;
164 };
165
166 # read() - read the on-disk partition table into memory.
167 METHOD int read {
168 struct g_part_table *table;
169 struct g_consumer *cp;
170 };
171
172 # recover() - scheme specific processing for the recover verb.
173 METHOD int recover {
174 struct g_part_table *table;
175 } DEFAULT default_recover;
176
177 # setunset() - set or unset partition entry attributes.
178 METHOD int setunset {
179 struct g_part_table *table;
180 struct g_part_entry *entry;
181 const char *attrib;
182 unsigned int set;
183 };
184
185 # type() - return a string representation of the partition type.
186 # Preferrably, the alias names.
187 METHOD const char * type {
188 struct g_part_table *table;
189 struct g_part_entry *entry;
190 char *buf;
191 size_t bufsz;
192 };
193
194 # write() - write the in-memory partition table to disk.
195 METHOD int write {
196 struct g_part_table *table;
197 struct g_consumer *cp;
198 };
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