freebsd-dev/sys/geom/part/g_part_if.m
Warner Losh 73f49e9eef Implement the historic DIOCGDINFO ioctl for gpart on BSD
partitions. Several utilities still use this interface and require
additional information since gpart was activated than before. This
allows fsck of a UFS partition without having to specify it is UFS,
per historic behavior.
2014-11-18 17:06:40 +00:00

217 lines
5.8 KiB
Objective-C

#-
# Copyright (c) 2006-2009 Marcel Moolenaar
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# $FreeBSD$
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/sbuf.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/systm.h>
#include <geom/geom.h>
#include <geom/part/g_part.h>
# The G_PART scheme interface.
INTERFACE g_part;
# Default implementations of methods.
CODE {
static void
default_fullname(struct g_part_table *table,
struct g_part_entry *entry, struct sbuf *sb, const char *pfx)
{
char buf[32];
sbuf_printf(sb, "%s%s", pfx,
G_PART_NAME(table, entry, buf, sizeof(buf)));
}
static int
default_precheck(struct g_part_table *t __unused,
enum g_part_ctl r __unused, struct g_part_parms *p __unused)
{
return (0);
}
static int
default_resize(struct g_part_table *t __unused,
struct g_part_entry *e __unused, struct g_part_parms *p __unused)
{
return (ENOSYS);
}
static int
default_recover(struct g_part_table *t __unused)
{
return (ENOSYS);
}
static int
default_ioctl(struct g_part_table *table __unused, struct g_provider *pp __unused,
u_long cmd __unused, void *data __unused, int fflag __unused,
struct thread *td __unused)
{
return (ENOIOCTL);
}
};
# add() - scheme specific processing for the add verb.
METHOD int add {
struct g_part_table *table;
struct g_part_entry *entry;
struct g_part_parms *gpp;
};
# bootcode() - scheme specific processing for the bootcode verb.
METHOD int bootcode {
struct g_part_table *table;
struct g_part_parms *gpp;
};
# create() - scheme specific processing for the create verb.
METHOD int create {
struct g_part_table *table;
struct g_part_parms *gpp;
};
# destroy() - scheme specific processing for the destroy verb.
METHOD int destroy {
struct g_part_table *table;
struct g_part_parms *gpp;
};
# dumpconf()
METHOD void dumpconf {
struct g_part_table *table;
struct g_part_entry *entry;
struct sbuf *sb;
const char *indent;
};
# dumpto() - return whether the partiton can be used for kernel dumps.
METHOD int dumpto {
struct g_part_table *table;
struct g_part_entry *entry;
};
# fullname() - write the name of the given partition entry to the sbuf.
METHOD void fullname {
struct g_part_table *table;
struct g_part_entry *entry;
struct sbuf *sb;
const char *pfx;
} DEFAULT default_fullname;
# ioctl() - implement historic ioctls, perhaps.
METHOD int ioctl {
struct g_part_table *table;
struct g_provider *pp;
u_long cmd;
void *data;
int fflag;
struct thread *td;
} DEFAULT default_ioctl;
# modify() - scheme specific processing for the modify verb.
METHOD int modify {
struct g_part_table *table;
struct g_part_entry *entry;
struct g_part_parms *gpp;
};
# resize() - scheme specific processing for the resize verb.
METHOD int resize {
struct g_part_table *table;
struct g_part_entry *entry;
struct g_part_parms *gpp;
} DEFAULT default_resize;
# name() - return the name of the given partition entry.
# Typical names are "p1", "s0" or "c".
METHOD const char * name {
struct g_part_table *table;
struct g_part_entry *entry;
char *buf;
size_t bufsz;
};
# precheck() - method to allow schemes to check the parameters given
# to the mentioned ctl request. This only applies to the requests that
# operate on a GEOM. In other words, it does not apply to the create
# request.
# It is allowed (intended actually) to change the parameters according
# to the schemes needs before they are used. Returning an error will
# terminate the request immediately.
METHOD int precheck {
struct g_part_table *table;
enum g_part_ctl req;
struct g_part_parms *gpp;
} DEFAULT default_precheck;
# probe() - probe the provider attached to the given consumer for the
# existence of the scheme implemented by the G_PART interface handler.
METHOD int probe {
struct g_part_table *table;
struct g_consumer *cp;
};
# read() - read the on-disk partition table into memory.
METHOD int read {
struct g_part_table *table;
struct g_consumer *cp;
};
# recover() - scheme specific processing for the recover verb.
METHOD int recover {
struct g_part_table *table;
} DEFAULT default_recover;
# setunset() - set or unset partition entry attributes.
METHOD int setunset {
struct g_part_table *table;
struct g_part_entry *entry;
const char *attrib;
unsigned int set;
};
# type() - return a string representation of the partition type.
# Preferrably, the alias names.
METHOD const char * type {
struct g_part_table *table;
struct g_part_entry *entry;
char *buf;
size_t bufsz;
};
# write() - write the in-memory partition table to disk.
METHOD int write {
struct g_part_table *table;
struct g_consumer *cp;
};