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%s", pfx, g_part_separator, 52 G_PART_NAME(table, entry, buf, sizeof(buf))); 53 } 54 55 static struct g_provider * 56 default_new_provider(struct g_part_table *table, struct g_geom *gp, 57 struct g_part_entry *entry, const char *pfx) 58 { 59 struct g_provider *ret; 60 struct sbuf *sb; 61 62 sb = sbuf_new_auto(); 63 G_PART_FULLNAME(table, entry, sb, pfx); 64 sbuf_finish(sb); 65 ret = g_new_providerf(gp, "%s", sbuf_data(sb)); 66 sbuf_delete(sb); 67 return (ret); 68 } 69 70 static void 71 default_add_alias(struct g_part_table *table, struct g_provider *pp, 72 struct g_part_entry *entry, const char *pfx) 73 { 74 struct sbuf *sb; 75 76 sb = sbuf_new_auto(); 77 G_PART_FULLNAME(table, entry, sb, pfx); 78 sbuf_finish(sb); 79 g_provider_add_alias(pp, "%s", sbuf_data(sb)); 80 sbuf_delete(sb); 81 } 82 83 static int 84 default_precheck(struct g_part_table *t __unused, 85 enum g_part_ctl r __unused, struct g_part_parms *p __unused) 86 { 87 return (0); 88 } 89 90 static int 91 default_resize(struct g_part_table *t __unused, 92 struct g_part_entry *e __unused, struct g_part_parms *p __unused) 93 { 94 return (ENOSYS); 95 } 96 97 static int 98 default_recover(struct g_part_table *t __unused) 99 { 100 return (ENOSYS); 101 } 102 103 static int 104 default_ioctl(struct g_part_table *table __unused, struct g_provider *pp __unused, 105 u_long cmd __unused, void *data __unused, int fflag __unused, 106 struct thread *td __unused) 107 { 108 return (ENOIOCTL); 109 } 110}; 111 112# add() - scheme specific processing for the add verb. 113METHOD int add { 114 struct g_part_table *table; 115 struct g_part_entry *entry; 116 struct g_part_parms *gpp; 117}; 118 119# add_alias() - Create aliases for the partition's provider with the given 120# alias prefixes. 121METHOD void add_alias { 122 struct g_part_table *table; 123 struct g_provider *pp; 124 struct g_part_entry *entry; 125 const char *pfx; 126} DEFAULT default_add_alias; 127 128# bootcode() - scheme specific processing for the bootcode verb. 129METHOD int bootcode { 130 struct g_part_table *table; 131 struct g_part_parms *gpp; 132}; 133 134# create() - scheme specific processing for the create verb. 135METHOD int create { 136 struct g_part_table *table; 137 struct g_part_parms *gpp; 138}; 139 140# destroy() - scheme specific processing for the destroy verb. 141METHOD int destroy { 142 struct g_part_table *table; 143 struct g_part_parms *gpp; 144}; 145 146# dumpconf() 147METHOD void dumpconf { 148 struct g_part_table *table; 149 struct g_part_entry *entry; 150 struct sbuf *sb; 151 const char *indent; 152}; 153 154# dumpto() - return whether the partiton can be used for kernel dumps. 155METHOD int dumpto { 156 struct g_part_table *table; 157 struct g_part_entry *entry; 158}; 159 160# fullname() - write the name of the given partition entry to the sbuf. 161METHOD void fullname { 162 struct g_part_table *table; 163 struct g_part_entry *entry; 164 struct sbuf *sb; 165 const char *pfx; 166} DEFAULT default_fullname; 167 168# ioctl() - implement historic ioctls, perhaps. 169METHOD int ioctl { 170 struct g_part_table *table; 171 struct g_provider *pp; 172 u_long cmd; 173 void *data; 174 int fflag; 175 struct thread *td; 176} DEFAULT default_ioctl; 177 178# modify() - scheme specific processing for the modify verb. 179METHOD int modify { 180 struct g_part_table *table; 181 struct g_part_entry *entry; 182 struct g_part_parms *gpp; 183}; 184 185# new_provider() - Create the partition's provider(s). 186METHOD struct g_provider * new_provider { 187 struct g_part_table *table; 188 struct g_geom *gp; 189 struct g_part_entry *entry; 190 const char *pfx; 191} DEFAULT default_new_provider; 192 193# resize() - scheme specific processing for the resize verb. 194METHOD int resize { 195 struct g_part_table *table; 196 struct g_part_entry *entry; 197 struct g_part_parms *gpp; 198} DEFAULT default_resize; 199 200# name() - return the name of the given partition entry. 201# Typical names are "p1", "s0" or "c". 202METHOD const char * name { 203 struct g_part_table *table; 204 struct g_part_entry *entry; 205 char *buf; 206 size_t bufsz; 207}; 208 209# precheck() - method to allow schemes to check the parameters given 210# to the mentioned ctl request. This only applies to the requests that 211# operate on a GEOM. In other words, it does not apply to the create 212# request. 213# It is allowed (intended actually) to change the parameters according 214# to the schemes needs before they are used. Returning an error will 215# terminate the request immediately. 216METHOD int precheck { 217 struct g_part_table *table; 218 enum g_part_ctl req; 219 struct g_part_parms *gpp; 220} DEFAULT default_precheck; 221 222# probe() - probe the provider attached to the given consumer for the 223# existence of the scheme implemented by the G_PART interface handler. 224METHOD int probe { 225 struct g_part_table *table; 226 struct g_consumer *cp; 227}; 228 229# read() - read the on-disk partition table into memory. 230METHOD int read { 231 struct g_part_table *table; 232 struct g_consumer *cp; 233}; 234 235# recover() - scheme specific processing for the recover verb. 236METHOD int recover { 237 struct g_part_table *table; 238} DEFAULT default_recover; 239 240# setunset() - set or unset partition entry attributes. 241METHOD int setunset { 242 struct g_part_table *table; 243 struct g_part_entry *entry; 244 const char *attrib; 245 unsigned int set; 246}; 247 248# type() - return a string representation of the partition type. 249# Preferably, the alias names. 250METHOD const char * type { 251 struct g_part_table *table; 252 struct g_part_entry *entry; 253 char *buf; 254 size_t bufsz; 255}; 256 257# write() - write the in-memory partition table to disk. 258METHOD int write { 259 struct g_part_table *table; 260 struct g_consumer *cp; 261}; 262