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# $FreeBSD$ 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 70# add() - scheme specific processing for the add verb. 71METHOD int add { 72 struct g_part_table *table; 73 struct g_part_entry *entry; 74 struct g_part_parms *gpp; 75}; 76 77# bootcode() - scheme specific processing for the bootcode verb. 78METHOD int bootcode { 79 struct g_part_table *table; 80 struct g_part_parms *gpp; 81}; 82 83# create() - scheme specific processing for the create verb. 84METHOD int create { 85 struct g_part_table *table; 86 struct g_part_parms *gpp; 87}; 88 89# destroy() - scheme specific processing for the destroy verb. 90METHOD int destroy { 91 struct g_part_table *table; 92 struct g_part_parms *gpp; 93}; 94 95# dumpconf() 96METHOD void dumpconf { 97 struct g_part_table *table; 98 struct g_part_entry *entry; 99 struct sbuf *sb; 100 const char *indent; 101}; 102 103# dumpto() - return whether the partiton can be used for kernel dumps. 104METHOD int dumpto { 105 struct g_part_table *table; 106 struct g_part_entry *entry; 107}; 108 109# fullname() - write the name of the given partition entry to the sbuf. 110METHOD void fullname { 111 struct g_part_table *table; 112 struct g_part_entry *entry; 113 struct sbuf *sb; 114 const char *pfx; 115} DEFAULT default_fullname; 116 117# modify() - scheme specific processing for the modify verb. 118METHOD int modify { 119 struct g_part_table *table; 120 struct g_part_entry *entry; 121 struct g_part_parms *gpp; 122}; 123 124# resize() - scheme specific processing for the resize verb. 125METHOD int resize { 126 struct g_part_table *table; 127 struct g_part_entry *entry; 128 struct g_part_parms *gpp; 129} DEFAULT default_resize; 130 131# name() - return the name of the given partition entry. 132# Typical names are "p1", "s0" or "c". 133METHOD const char * name { 134 struct g_part_table *table; 135 struct g_part_entry *entry; 136 char *buf; 137 size_t bufsz; 138}; 139 140# precheck() - method to allow schemes to check the parameters given 141# to the mentioned ctl request. This only applies to the requests that 142# operate on a GEOM. In other words, it does not apply to the create 143# request. 144# It is allowed (intended actually) to change the parameters according 145# to the schemes needs before they are used. Returning an error will 146# terminate the request immediately. 147METHOD int precheck { 148 struct g_part_table *table; 149 enum g_part_ctl req; 150 struct g_part_parms *gpp; 151} DEFAULT default_precheck; 152 153# probe() - probe the provider attached to the given consumer for the 154# existence of the scheme implemented by the G_PART interface handler. 155METHOD int probe { 156 struct g_part_table *table; 157 struct g_consumer *cp; 158}; 159 160# read() - read the on-disk partition table into memory. 161METHOD int read { 162 struct g_part_table *table; 163 struct g_consumer *cp; 164}; 165 166# setunset() - set or unset partition entry attributes. 167METHOD int setunset { 168 struct g_part_table *table; 169 struct g_part_entry *entry; 170 const char *attrib; 171 unsigned int set; 172}; 173 174# type() - return a string representation of the partition type. 175# Preferrably, the alias names. 176METHOD const char * type { 177 struct g_part_table *table; 178 struct g_part_entry *entry; 179 char *buf; 180 size_t bufsz; 181}; 182 183# write() - write the in-memory partition table to disk. 184METHOD int write { 185 struct g_part_table *table; 186 struct g_consumer *cp; 187}; 188