mirror of
https://git.FreeBSD.org/src.git
synced 2025-01-01 12:19:28 +00:00
Add a BSD disklabel backend to g_part:
o Disklabels can have between 8 and 20 partitions (inclusive). o No device special file is created for the raw partition. o Switch ia64 to use this backend. o No support for boot code yet.
This commit is contained in:
Marcel Moolenaar
parent
e9faf6c240
commit
5aaa8fefdf
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=174326
@ -145,6 +145,7 @@ options GEOM_MIRROR # Disk mirroring.
|
||||
options GEOM_MULTIPATH # Disk multipath
|
||||
options GEOM_NOP # Test class.
|
||||
options GEOM_PART_APM # Apple partitioning
|
||||
options GEOM_PART_BSD # BSD disklabel
|
||||
options GEOM_PART_GPT # GPT partitioning
|
||||
options GEOM_PART_MBR # MBR partitioning
|
||||
options GEOM_PC98 # NEC PC9800 partitioning
|
||||
|
||||
@ -1297,6 +1297,7 @@ geom/nop/g_nop.c optional geom_nop
|
||||
geom/part/g_part.c standard
|
||||
geom/part/g_part_if.m standard
|
||||
geom/part/g_part_apm.c optional geom_part_apm
|
||||
geom/part/g_part_bsd.c optional geom_part_bsd
|
||||
geom/part/g_part_gpt.c optional geom_part_gpt
|
||||
geom/part/g_part_mbr.c optional geom_part_mbr
|
||||
geom/raid3/g_raid3.c optional geom_raid3
|
||||
|
||||
@ -87,6 +87,7 @@ GEOM_MIRROR opt_geom.h
|
||||
GEOM_MULTIPATH opt_geom.h
|
||||
GEOM_NOP opt_geom.h
|
||||
GEOM_PART_APM opt_geom.h
|
||||
GEOM_PART_BSD opt_geom.h
|
||||
GEOM_PART_GPT opt_geom.h
|
||||
GEOM_PART_MBR opt_geom.h
|
||||
GEOM_PC98 opt_geom.h
|
||||
|
||||
@ -453,6 +453,8 @@ g_part_ctl_add(struct gctl_req *req, struct g_part_parms *gpp)
|
||||
index = entry->gpe_index + 1;
|
||||
last = entry;
|
||||
}
|
||||
if (entry->gpe_internal)
|
||||
continue;
|
||||
if (gpp->gpp_start >= entry->gpe_start &&
|
||||
gpp->gpp_start <= entry->gpe_end) {
|
||||
gctl_error(req, "%d start '%jd'", ENOSPC,
|
||||
@ -666,6 +668,14 @@ g_part_ctl_create(struct gctl_req *req, struct g_part_parms *gpp)
|
||||
error = g_getattr("PART::depth", cp, &attr);
|
||||
table->gpt_depth = (!error) ? attr + 1 : 0;
|
||||
|
||||
/* If we're nested, get the absolute sector offset on disk. */
|
||||
if (table->gpt_depth) {
|
||||
error = g_getattr("PART::offset", cp, &attr);
|
||||
if (error)
|
||||
goto fail;
|
||||
table->gpt_offset = attr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Synthesize a disk geometry. Some partitioning schemes
|
||||
* depend on it and since some file systems need it even
|
||||
@ -742,13 +752,16 @@ g_part_ctl_delete(struct gctl_req *req, struct g_part_parms *gpp)
|
||||
}
|
||||
|
||||
pp = entry->gpe_pp;
|
||||
if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0) {
|
||||
gctl_error(req, "%d", EBUSY);
|
||||
return (EBUSY);
|
||||
if (pp != NULL) {
|
||||
if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0) {
|
||||
gctl_error(req, "%d", EBUSY);
|
||||
return (EBUSY);
|
||||
}
|
||||
|
||||
pp->private = NULL;
|
||||
entry->gpe_pp = NULL;
|
||||
}
|
||||
|
||||
pp->private = NULL;
|
||||
entry->gpe_pp = NULL;
|
||||
if (entry->gpe_created) {
|
||||
LIST_REMOVE(entry, gpe_entry);
|
||||
g_free(entry);
|
||||
@ -756,7 +769,9 @@ g_part_ctl_delete(struct gctl_req *req, struct g_part_parms *gpp)
|
||||
entry->gpe_modified = 0;
|
||||
entry->gpe_deleted = 1;
|
||||
}
|
||||
g_wither_provider(pp, ENXIO);
|
||||
|
||||
if (pp != NULL)
|
||||
g_wither_provider(pp, ENXIO);
|
||||
|
||||
/* Provide feedback if so requested. */
|
||||
if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {
|
||||
@ -919,9 +934,11 @@ g_part_ctl_undo(struct gctl_req *req, struct g_part_parms *gpp)
|
||||
entry->gpe_modified = 0;
|
||||
if (entry->gpe_created) {
|
||||
pp = entry->gpe_pp;
|
||||
pp->private = NULL;
|
||||
entry->gpe_pp = NULL;
|
||||
g_wither_provider(pp, ENXIO);
|
||||
if (pp != NULL) {
|
||||
pp->private = NULL;
|
||||
entry->gpe_pp = NULL;
|
||||
g_wither_provider(pp, ENXIO);
|
||||
}
|
||||
entry->gpe_deleted = 1;
|
||||
}
|
||||
if (entry->gpe_deleted) {
|
||||
@ -956,8 +973,10 @@ g_part_ctl_undo(struct gctl_req *req, struct g_part_parms *gpp)
|
||||
|
||||
g_topology_lock();
|
||||
|
||||
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry)
|
||||
g_part_new_provider(gp, table, entry);
|
||||
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
||||
if (!entry->gpe_internal)
|
||||
g_part_new_provider(gp, table, entry);
|
||||
}
|
||||
|
||||
table->gpt_opened = 0;
|
||||
g_access(cp, -1, -1, -1);
|
||||
@ -1331,7 +1350,15 @@ g_part_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
|
||||
goto fail;
|
||||
|
||||
table = gp->softc;
|
||||
|
||||
|
||||
/* If we're nested, get the absolute sector offset on disk. */
|
||||
if (table->gpt_depth) {
|
||||
error = g_getattr("PART::offset", cp, &attr);
|
||||
if (error)
|
||||
goto fail;
|
||||
table->gpt_offset = attr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Synthesize a disk geometry. Some partitioning schemes
|
||||
* depend on it and since some file systems need it even
|
||||
@ -1345,8 +1372,10 @@ g_part_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
|
||||
goto fail;
|
||||
|
||||
g_topology_lock();
|
||||
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry)
|
||||
g_part_new_provider(gp, table, entry);
|
||||
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
|
||||
if (!entry->gpe_internal)
|
||||
g_part_new_provider(gp, table, entry);
|
||||
}
|
||||
|
||||
g_access(cp, -1, 0, 0);
|
||||
return (gp);
|
||||
@ -1507,6 +1536,9 @@ g_part_start(struct bio *bp)
|
||||
return;
|
||||
if (g_handleattr_int(bp, "PART::depth", table->gpt_depth))
|
||||
return;
|
||||
if (g_handleattr_int(bp, "PART::offset",
|
||||
table->gpt_offset + entry->gpe_start))
|
||||
return;
|
||||
if (!strcmp("GEOM::kerneldump", bp->bio_attribute)) {
|
||||
/*
|
||||
* Check that the partition is suitable for kernel
|
||||
|
||||
@ -69,6 +69,7 @@ struct g_part_entry {
|
||||
int gpe_created:1; /* Entry is newly created. */
|
||||
int gpe_deleted:1; /* Entry has been deleted. */
|
||||
int gpe_modified:1; /* Entry has been modified. */
|
||||
int gpe_internal:1; /* Entry is not a used entry. */
|
||||
};
|
||||
|
||||
/* G_PART table (KOBJ instance). */
|
||||
@ -101,6 +102,13 @@ struct g_part_table {
|
||||
*/
|
||||
uint32_t gpt_sectors;
|
||||
uint32_t gpt_heads;
|
||||
/*
|
||||
* gpt_offset holds the absolute block address of the scheme
|
||||
* on disk. Some partitioning schemes (historically) use
|
||||
* absolute addressing. Relative addresses are obtained by
|
||||
* subtracting gpt_offset from the absolute addresses.
|
||||
*/
|
||||
uint64_t gpt_offset;
|
||||
|
||||
int gpt_depth; /* Sub-partitioning level. */
|
||||
int gpt_isleaf:1; /* Cannot be sub-partitioned. */
|
||||
|
||||
440
sys/geom/part/g_part_bsd.c
Normal file
440
sys/geom/part/g_part_bsd.c
Normal file
@ -0,0 +1,440 @@
|
||||
/*-
|
||||
* Copyright (c) 2007 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/bio.h>
|
||||
#include <sys/disklabel.h>
|
||||
#include <sys/endian.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/kobj.h>
|
||||
#include <sys/limits.h>
|
||||
#include <sys/lock.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/mutex.h>
|
||||
#include <sys/queue.h>
|
||||
#include <sys/sbuf.h>
|
||||
#include <sys/systm.h>
|
||||
#include <geom/geom.h>
|
||||
#include <geom/part/g_part.h>
|
||||
|
||||
#include "g_part_if.h"
|
||||
|
||||
struct g_part_bsd_table {
|
||||
struct g_part_table base;
|
||||
u_char *label;
|
||||
};
|
||||
|
||||
struct g_part_bsd_entry {
|
||||
struct g_part_entry base;
|
||||
struct partition part;
|
||||
};
|
||||
|
||||
static int g_part_bsd_add(struct g_part_table *, struct g_part_entry *,
|
||||
struct g_part_parms *);
|
||||
static int g_part_bsd_create(struct g_part_table *, struct g_part_parms *);
|
||||
static int g_part_bsd_destroy(struct g_part_table *, struct g_part_parms *);
|
||||
static int g_part_bsd_dumpto(struct g_part_table *, struct g_part_entry *);
|
||||
static int g_part_bsd_modify(struct g_part_table *, struct g_part_entry *,
|
||||
struct g_part_parms *);
|
||||
static char *g_part_bsd_name(struct g_part_table *, struct g_part_entry *,
|
||||
char *, size_t);
|
||||
static int g_part_bsd_probe(struct g_part_table *, struct g_consumer *);
|
||||
static int g_part_bsd_read(struct g_part_table *, struct g_consumer *);
|
||||
static const char *g_part_bsd_type(struct g_part_table *, struct g_part_entry *,
|
||||
char *, size_t);
|
||||
static int g_part_bsd_write(struct g_part_table *, struct g_consumer *);
|
||||
|
||||
static kobj_method_t g_part_bsd_methods[] = {
|
||||
KOBJMETHOD(g_part_add, g_part_bsd_add),
|
||||
KOBJMETHOD(g_part_create, g_part_bsd_create),
|
||||
KOBJMETHOD(g_part_destroy, g_part_bsd_destroy),
|
||||
KOBJMETHOD(g_part_dumpto, g_part_bsd_dumpto),
|
||||
KOBJMETHOD(g_part_modify, g_part_bsd_modify),
|
||||
KOBJMETHOD(g_part_name, g_part_bsd_name),
|
||||
KOBJMETHOD(g_part_probe, g_part_bsd_probe),
|
||||
KOBJMETHOD(g_part_read, g_part_bsd_read),
|
||||
KOBJMETHOD(g_part_type, g_part_bsd_type),
|
||||
KOBJMETHOD(g_part_write, g_part_bsd_write),
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static struct g_part_scheme g_part_bsd_scheme = {
|
||||
"BSD",
|
||||
g_part_bsd_methods,
|
||||
sizeof(struct g_part_bsd_table),
|
||||
.gps_entrysz = sizeof(struct g_part_bsd_entry),
|
||||
.gps_minent = 8,
|
||||
.gps_maxent = 20,
|
||||
};
|
||||
G_PART_SCHEME_DECLARE(g_part_bsd_scheme);
|
||||
|
||||
static int
|
||||
bsd_parse_type(const char *type, uint8_t *fstype)
|
||||
{
|
||||
const char *alias;
|
||||
char *endp;
|
||||
long lt;
|
||||
|
||||
if (type[0] == '!') {
|
||||
lt = strtol(type + 1, &endp, 0);
|
||||
if (type[1] == '\0' || *endp != '\0' || lt <= 0 || lt >= 256)
|
||||
return (EINVAL);
|
||||
*fstype = (u_int)lt;
|
||||
return (0);
|
||||
}
|
||||
alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP);
|
||||
if (!strcasecmp(type, alias)) {
|
||||
*fstype = FS_SWAP;
|
||||
return (0);
|
||||
}
|
||||
alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS);
|
||||
if (!strcasecmp(type, alias)) {
|
||||
*fstype = FS_BSDFFS;
|
||||
return (0);
|
||||
}
|
||||
alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM);
|
||||
if (!strcasecmp(type, alias)) {
|
||||
*fstype = FS_VINUM;
|
||||
return (0);
|
||||
}
|
||||
return (EINVAL);
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_add(struct g_part_table *basetable, struct g_part_entry *baseentry,
|
||||
struct g_part_parms *gpp)
|
||||
{
|
||||
struct g_part_bsd_entry *entry;
|
||||
struct g_part_bsd_table *table;
|
||||
uint32_t start, size, sectors;
|
||||
|
||||
if (gpp->gpp_parms & G_PART_PARM_LABEL)
|
||||
return (EINVAL);
|
||||
|
||||
sectors = basetable->gpt_sectors;
|
||||
|
||||
entry = (struct g_part_bsd_entry *)baseentry;
|
||||
table = (struct g_part_bsd_table *)basetable;
|
||||
|
||||
start = gpp->gpp_start;
|
||||
size = gpp->gpp_size;
|
||||
if (size < sectors)
|
||||
return (EINVAL);
|
||||
if (start % sectors) {
|
||||
size = size - sectors + (start % sectors);
|
||||
start = start - (start % sectors) + sectors;
|
||||
}
|
||||
if (size % sectors)
|
||||
size = size - (size % sectors);
|
||||
if (size < sectors)
|
||||
return (EINVAL);
|
||||
|
||||
KASSERT(baseentry->gpe_start <= start, (__func__));
|
||||
KASSERT(baseentry->gpe_end >= start + size - 1, (__func__));
|
||||
baseentry->gpe_start = start;
|
||||
baseentry->gpe_end = start + size - 1;
|
||||
entry->part.p_size = size;
|
||||
entry->part.p_offset = start + basetable->gpt_offset;
|
||||
entry->part.p_fsize = 0;
|
||||
entry->part.p_frag = 0;
|
||||
entry->part.p_cpg = 0;
|
||||
return (bsd_parse_type(gpp->gpp_type, &entry->part.p_fstype));
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_create(struct g_part_table *basetable, struct g_part_parms *gpp)
|
||||
{
|
||||
struct g_consumer *cp;
|
||||
struct g_provider *pp;
|
||||
struct g_part_entry *baseentry;
|
||||
struct g_part_bsd_entry *entry;
|
||||
struct g_part_bsd_table *table;
|
||||
u_char *ptr;
|
||||
uint64_t msize;
|
||||
uint32_t ncyls, secpercyl;
|
||||
|
||||
pp = gpp->gpp_provider;
|
||||
cp = LIST_FIRST(&pp->consumers);
|
||||
|
||||
if (pp->sectorsize < sizeof(struct disklabel))
|
||||
return (ENOSPC);
|
||||
|
||||
msize = pp->mediasize / pp->sectorsize;
|
||||
secpercyl = basetable->gpt_sectors * basetable->gpt_heads;
|
||||
ncyls = msize / secpercyl;
|
||||
|
||||
table = (struct g_part_bsd_table *)basetable;
|
||||
ptr = table->label = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO);
|
||||
|
||||
le32enc(ptr + 0, DISKMAGIC); /* d_magic */
|
||||
le32enc(ptr + 40, pp->sectorsize); /* d_secsize */
|
||||
le32enc(ptr + 44, basetable->gpt_sectors); /* d_nsectors */
|
||||
le32enc(ptr + 48, basetable->gpt_heads); /* d_ntracks */
|
||||
le32enc(ptr + 52, ncyls); /* d_ncylinders */
|
||||
le32enc(ptr + 56, secpercyl); /* d_secpercyl */
|
||||
le32enc(ptr + 60, ncyls * secpercyl); /* d_secperunit */
|
||||
le16enc(ptr + 72, 3600); /* d_rpm */
|
||||
le32enc(ptr + 132, DISKMAGIC); /* d_magic2 */
|
||||
le16enc(ptr + 138, basetable->gpt_entries); /* d_npartitions */
|
||||
le32enc(ptr + 140, BBSIZE); /* d_bbsize */
|
||||
|
||||
basetable->gpt_first = 0;
|
||||
basetable->gpt_last = ncyls * secpercyl - 1;
|
||||
basetable->gpt_isleaf = 1;
|
||||
|
||||
baseentry = g_part_new_entry(basetable, RAW_PART + 1,
|
||||
basetable->gpt_first, basetable->gpt_last);
|
||||
baseentry->gpe_internal = 1;
|
||||
entry = (struct g_part_bsd_entry *)baseentry;
|
||||
entry->part.p_size = basetable->gpt_last + 1;
|
||||
entry->part.p_offset = basetable->gpt_offset;
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_destroy(struct g_part_table *basetable, struct g_part_parms *gpp)
|
||||
{
|
||||
|
||||
/* Wipe the second sector to clear the partitioning. */
|
||||
basetable->gpt_smhead |= 2;
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_dumpto(struct g_part_table *table, struct g_part_entry *baseentry)
|
||||
{
|
||||
struct g_part_bsd_entry *entry;
|
||||
|
||||
/* Allow dumping to a swap partition only. */
|
||||
entry = (struct g_part_bsd_entry *)baseentry;
|
||||
return ((entry->part.p_fstype == FS_SWAP) ? 1 : 0);
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_modify(struct g_part_table *basetable,
|
||||
struct g_part_entry *baseentry, struct g_part_parms *gpp)
|
||||
{
|
||||
struct g_part_bsd_entry *entry;
|
||||
|
||||
if (gpp->gpp_parms & G_PART_PARM_LABEL)
|
||||
return (EINVAL);
|
||||
|
||||
entry = (struct g_part_bsd_entry *)baseentry;
|
||||
if (gpp->gpp_parms & G_PART_PARM_TYPE)
|
||||
return (bsd_parse_type(gpp->gpp_type, &entry->part.p_fstype));
|
||||
return (0);
|
||||
}
|
||||
|
||||
static char *
|
||||
g_part_bsd_name(struct g_part_table *table, struct g_part_entry *baseentry,
|
||||
char *buf, size_t bufsz)
|
||||
{
|
||||
|
||||
snprintf(buf, bufsz, "%c", 'a' + baseentry->gpe_index - 1);
|
||||
return (buf);
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_probe(struct g_part_table *table, struct g_consumer *cp)
|
||||
{
|
||||
struct g_provider *pp;
|
||||
u_char *buf;
|
||||
uint32_t magic1, magic2;
|
||||
int error;
|
||||
|
||||
pp = cp->provider;
|
||||
|
||||
/* Sanity-check the provider. */
|
||||
if (pp->sectorsize < sizeof(struct disklabel) ||
|
||||
pp->mediasize < BBSIZE)
|
||||
return (ENOSPC);
|
||||
|
||||
/* Check that there's a disklabel. */
|
||||
buf = g_read_data(cp, pp->sectorsize, pp->sectorsize, &error);
|
||||
if (buf == NULL)
|
||||
return (error);
|
||||
magic1 = le32dec(buf + 0);
|
||||
magic2 = le32dec(buf + 132);
|
||||
g_free(buf);
|
||||
return ((magic1 == DISKMAGIC && magic2 == DISKMAGIC)
|
||||
? G_PART_PROBE_PRI_NORM : ENXIO);
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_read(struct g_part_table *basetable, struct g_consumer *cp)
|
||||
{
|
||||
struct g_provider *pp;
|
||||
struct g_part_bsd_table *table;
|
||||
struct g_part_entry *baseentry;
|
||||
struct g_part_bsd_entry *entry;
|
||||
struct partition part;
|
||||
u_char *buf, *p;
|
||||
off_t chs, msize;
|
||||
u_int sectors, heads;
|
||||
int error, index;
|
||||
|
||||
pp = cp->provider;
|
||||
table = (struct g_part_bsd_table *)basetable;
|
||||
msize = pp->mediasize / pp->sectorsize;
|
||||
|
||||
buf = g_read_data(cp, pp->sectorsize, pp->sectorsize, &error);
|
||||
if (buf == NULL)
|
||||
return (error);
|
||||
|
||||
table->label = buf;
|
||||
|
||||
if (le32dec(buf + 40) != pp->sectorsize)
|
||||
goto invalid_label;
|
||||
sectors = le32dec(buf + 44);
|
||||
if (sectors < 1 || sectors > 63)
|
||||
goto invalid_label;
|
||||
if (sectors != basetable->gpt_sectors) {
|
||||
if (basetable->gpt_fixgeom)
|
||||
goto invalid_label;
|
||||
g_part_geometry_heads(msize, sectors, &chs, &heads);
|
||||
if (chs == 0)
|
||||
goto invalid_label;
|
||||
basetable->gpt_sectors = sectors;
|
||||
basetable->gpt_heads = heads;
|
||||
}
|
||||
heads = le32dec(buf + 48);
|
||||
if (heads < 1 || heads > 255)
|
||||
goto invalid_label;
|
||||
if (heads != basetable->gpt_heads) {
|
||||
if (basetable->gpt_fixgeom)
|
||||
goto invalid_label;
|
||||
basetable->gpt_heads = heads;
|
||||
}
|
||||
chs = le32dec(buf + 52) * heads * sectors;
|
||||
if (chs < 1 || chs > msize)
|
||||
goto invalid_label;
|
||||
|
||||
basetable->gpt_first = 0;
|
||||
basetable->gpt_last = chs - 1;
|
||||
basetable->gpt_isleaf = 1;
|
||||
|
||||
basetable->gpt_entries = le16dec(buf + 138);
|
||||
if (basetable->gpt_entries < g_part_bsd_scheme.gps_minent ||
|
||||
basetable->gpt_entries > g_part_bsd_scheme.gps_maxent)
|
||||
goto invalid_label;
|
||||
|
||||
for (index = basetable->gpt_entries - 1; index >= 0; index--) {
|
||||
p = buf + 148 + index * 16;
|
||||
part.p_size = le32dec(p + 0);
|
||||
part.p_offset = le32dec(p + 4);
|
||||
part.p_fsize = le32dec(p + 8);
|
||||
part.p_fstype = p[12];
|
||||
part.p_frag = p[13];
|
||||
part.p_cpg = le16dec(p + 14);
|
||||
if (part.p_size == 0)
|
||||
continue;
|
||||
if (part.p_fstype == FS_UNUSED && index != RAW_PART)
|
||||
continue;
|
||||
if (part.p_offset < basetable->gpt_offset)
|
||||
continue;
|
||||
baseentry = g_part_new_entry(basetable, index + 1,
|
||||
part.p_offset - basetable->gpt_offset,
|
||||
part.p_offset - basetable->gpt_offset + part.p_size - 1);
|
||||
entry = (struct g_part_bsd_entry *)baseentry;
|
||||
entry->part = part;
|
||||
if (part.p_fstype == FS_UNUSED)
|
||||
baseentry->gpe_internal = 1;
|
||||
}
|
||||
|
||||
return (0);
|
||||
|
||||
invalid_label:
|
||||
printf("GEOM: %s: invalid disklabel.\n", pp->name);
|
||||
g_free(table->label);
|
||||
return (EINVAL);
|
||||
}
|
||||
|
||||
static const char *
|
||||
g_part_bsd_type(struct g_part_table *basetable, struct g_part_entry *baseentry,
|
||||
char *buf, size_t bufsz)
|
||||
{
|
||||
struct g_part_bsd_entry *entry;
|
||||
int type;
|
||||
|
||||
entry = (struct g_part_bsd_entry *)baseentry;
|
||||
type = entry->part.p_fstype;
|
||||
if (type == FS_SWAP)
|
||||
return (g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP));
|
||||
if (type == FS_BSDFFS)
|
||||
return (g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS));
|
||||
if (type == FS_VINUM)
|
||||
return (g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM));
|
||||
snprintf(buf, bufsz, "!%d", type);
|
||||
return (buf);
|
||||
}
|
||||
|
||||
static int
|
||||
g_part_bsd_write(struct g_part_table *basetable, struct g_consumer *cp)
|
||||
{
|
||||
struct g_provider *pp;
|
||||
struct g_part_entry *baseentry;
|
||||
struct g_part_bsd_entry *entry;
|
||||
struct g_part_bsd_table *table;
|
||||
uint16_t sum;
|
||||
u_char *p, *pe;
|
||||
int error, index;
|
||||
|
||||
pp = cp->provider;
|
||||
table = (struct g_part_bsd_table *)basetable;
|
||||
baseentry = LIST_FIRST(&basetable->gpt_entry);
|
||||
for (index = 1; index <= basetable->gpt_entries; index++) {
|
||||
p = table->label + 148 + (index - 1) * 16;
|
||||
entry = (baseentry != NULL && index == baseentry->gpe_index)
|
||||
? (struct g_part_bsd_entry *)baseentry : NULL;
|
||||
if (entry != NULL && !baseentry->gpe_deleted) {
|
||||
le32enc(p + 0, entry->part.p_size);
|
||||
le32enc(p + 4, entry->part.p_offset);
|
||||
le32enc(p + 8, entry->part.p_fsize);
|
||||
p[12] = entry->part.p_fstype;
|
||||
p[13] = entry->part.p_frag;
|
||||
le16enc(p + 14, entry->part.p_cpg);
|
||||
} else
|
||||
bzero(p, 16);
|
||||
|
||||
if (entry != NULL)
|
||||
baseentry = LIST_NEXT(baseentry, gpe_entry);
|
||||
}
|
||||
|
||||
/* Calculate checksum. */
|
||||
le16enc(table->label + 136, 0);
|
||||
pe = table->label + 148 + basetable->gpt_entries * 16;
|
||||
sum = 0;
|
||||
for (p = table->label; p < pe; p += 2)
|
||||
sum ^= le16dec(p);
|
||||
le16enc(table->label + 136, sum);
|
||||
|
||||
error = g_write_data(cp, pp->sectorsize, table->label, pp->sectorsize);
|
||||
return (error);
|
||||
}
|
||||
@ -14,7 +14,7 @@ device mem # Memory and kernel memory devices
|
||||
# UART chips on this platform
|
||||
device uart_ns8250
|
||||
|
||||
options GEOM_BSD
|
||||
options GEOM_PART_BSD
|
||||
options GEOM_PART_GPT
|
||||
options GEOM_PART_MBR
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user