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/10.2/sys/geom/part/g_part_if.m 214352 2010-10-25 16:23:35Z 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
41INTERFACE g_part;
42
43# Default implementations of methods.
44CODE {
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.
77METHOD 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.
84METHOD 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.
90METHOD 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.
96METHOD int destroy {
97	struct g_part_table *table;
98	struct g_part_parms *gpp;
99};
100
101# dumpconf()
102METHOD 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.
110METHOD 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.
116METHOD 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.
124METHOD 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.
131METHOD 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".
139METHOD 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.
153METHOD 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.
161METHOD 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.
167METHOD int read {
168	struct g_part_table *table;
169	struct g_consumer *cp;
170};
171
172# recover() - scheme specific processing for the recover verb.
173METHOD int recover {
174	struct g_part_table *table;
175} DEFAULT default_recover;
176
177# setunset() - set or unset partition entry attributes.
178METHOD 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.
187METHOD 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.
195METHOD int write {
196	struct g_part_table *table;
197	struct g_consumer *cp;
198};
199