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No need to make sunlabel anymore

Browse source 
It was only built on sparc64. Since it wasn't a general tool on other
architectures, no need to keep it around for another release.

Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D23524
This commit is contained in:
Warner Losh 2020-02-06 17:52:02 +00:00
parent 75ababf8b5
commit ab9848aa9b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=357624
8 changed files with 0 additions and 1940 deletions
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4
sbin/Makefile.sparc64
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@ -1,4 +0,0 @@
# $FreeBSD$
SUBDIR += bsdlabel
SUBDIR += sunlabel

20
sbin/sunlabel/Makefile
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# $FreeBSD$
PROG= sunlabel
SRCS= sunlabel.c sunlabel_enc.c
MAN= sunlabel.8
.if ${MACHINE_CPUARCH} == "sparc64"
LINKS= ${BINDIR}/sunlabel ${BINDIR}/disklabel
MLINKS= sunlabel.8 disklabel.8
.endif
LIBADD= geom
.include <bsd.prog.mk>
test: ${PROG}
sh ${.CURDIR}/runtest.sh
testx: ${PROG}
sh -x ${.CURDIR}/runtest.sh

16
sbin/sunlabel/Makefile.depend
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@ -1,16 +0,0 @@
# $FreeBSD$
# Autogenerated - do NOT edit!
DIRDEPS = \
include \
include/xlocale \
lib/${CSU_DIR} \
lib/libc \
lib/libgeom \
.include <dirdeps.mk>
.if ${DEP_RELDIR} == ${_DEP_RELDIR}
# local dependencies - needed for -jN in clean tree
.endif

157
sbin/sunlabel/runtest.sh
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@ -1,157 +0,0 @@
#!/bin/sh
# $FreeBSD$
TMP=/tmp/$$.
set -e
MD=`mdconfig -a -t malloc -s 2m`
trap "exec 7</dev/null; rm -f ${TMP}* ; mdconfig -d -u ${MD}" EXIT INT TERM
./sunlabel -r -w $MD auto
dd if=/dev/$MD of=${TMP}i0 count=16 > /dev/null 2>&1
./sunlabel $MD > ${TMP}l0
sed '
/ c:/{
p
s/c:/a:/
s/3969/1024/
}
' ${TMP}l0 > ${TMP}l1
./sunlabel -R $MD ${TMP}l1
if [ -c /dev/${MD}a ] ; then
echo "PASS: Created a: partition" 1>&2
else
echo "FAIL: Did not create a: partition" 1>&2
exit 2
fi
# Spoil and rediscover
true > /dev/${MD}
if [ -c /dev/${MD}a ] ; then
echo "PASS: Recreated a: partition after spoilage" 1>&2
else
echo "FAIL: Did not recreate a: partition after spoilage" 1>&2
exit 2
fi
dd if=/dev/$MD of=${TMP}i1 count=16 > /dev/null 2>&1
sed '
/ c:/{
p
s/c:/a:/
s/3969/2048/
}
' ${TMP}l0 > ${TMP}l2
./sunlabel -R $MD ${TMP}l2
dd if=/dev/$MD of=${TMP}i2 count=16 > /dev/null 2>&1
exec 7< /dev/${MD}a
for t in a c
do
if dd if=${TMP}i2 of=/dev/${MD}$t 2>/dev/null ; then
echo "PASS: Could rewrite same label to ...$t while ...a open" 1>&2
else
echo "FAIL: Could not rewrite same label to ...$t while ...a open" 1>&2
exit 2
fi
if dd if=${TMP}i1 of=/dev/${MD}$t 2>/dev/null ; then
echo "FAIL: Could label with smaller ...a to ...$t while ...a open" 1>&2
exit 2
else
echo "PASS: Could not label with smaller ...a to ...$t while ...a open" 1>&2
fi
if dd if=${TMP}i0 of=/dev/${MD}$t 2>/dev/null ; then
echo "FAIL: Could write label missing ...a to ...$t while ...a open" 1>&2
exit 2
else
echo "PASS: Could not write label missing ...a to ...$t while ...a open" 1>&2
fi
done
exec 7< /dev/null
if dd if=${TMP}i0 of=/dev/${MD}c 2>/dev/null ; then
echo "PASS: Could write missing ...a label to ...c" 1>&2
else
echo "FAIL: Could not write missing ...a label to ...c" 1>&2
exit 2
fi
if dd if=${TMP}i2 of=/dev/${MD}c 2>/dev/null ; then
echo "PASS: Could write large ...a label to ...c" 1>&2
else
echo "FAIL: Could not write large ...a label to ...c" 1>&2
exit 2
fi
if dd if=${TMP}i1 of=/dev/${MD}c 2>/dev/null ; then
echo "PASS: Could write small ...a label to ...c" 1>&2
else
echo "FAIL: Could not write small ...a label to ...c" 1>&2
exit 2
fi
if dd if=${TMP}i2 of=/dev/${MD}a 2>/dev/null ; then
echo "PASS: Could increase size of ...a by writing to ...a" 1>&2
else
echo "FAIL: Could not increase size of ...a by writing to ...a" 1>&2
exit 2
fi
if dd if=${TMP}i1 of=/dev/${MD}a 2>/dev/null ; then
echo "FAIL: Could decrease size of ...a by writing to ...a" 1>&2
exit 2
else
echo "PASS: Could not decrease size of ...a by writing to ...a" 1>&2
fi
if dd if=${TMP}i0 of=/dev/${MD}a 2>/dev/null ; then
echo "FAIL: Could delete ...a by writing to ...a" 1>&2
exit 2
else
echo "PASS: Could not delete ...a by writing to ...a" 1>&2
fi
if ./sunlabel -B -b ${TMP}i0 ${MD} ; then
if [ ! -c /dev/${MD}a ] ; then
echo "FAILED: Writing bootcode killed ...a" 1>&2
exit 2
else
echo "PASS: Could write bootcode while closed" 1>&2
fi
else
echo "FAILED: Could not write bootcode while closed" 1>&2
exit 2
fi
exec 7> /dev/${MD}c
if ktrace ./sunlabel -B -b ${TMP}i0 ${MD} ; then
if [ ! -c /dev/${MD}a ] ; then
echo "FAILED: Writing bootcode killed ...a" 1>&2
exit 2
else
echo "PASS: Could write bootcode while open" 1>&2
fi
else
echo "FAILED: Could not write bootcode while open" 1>&2
exit 2
fi
exec 7> /dev/null
if dd if=${TMP}i0 of=/dev/${MD}c 2>/dev/null ; then
echo "PASS: Could delete ...a by writing to ...c" 1>&2
else
echo "FAIL: Could not delete ...a by writing to ...c" 1>&2
exit 2
fi
# XXX: need to add a 'b' partition and check for overlaps.
exit 0

125
sbin/sunlabel/sun_disklabel.h
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@ -1,125 +0,0 @@
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2004,2005 Joerg Wunsch
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)sun_disklabel.h 8.1 (Berkeley) 6/11/93
* $NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $
*
* $FreeBSD$
*/
#ifndef _SYS_SUN_DISKLABEL_H_
#define _SYS_SUN_DISKLABEL_H_
/*
* SunOS/Solaris disk label layout (partial).
*
* Suns disk label format contains a lot of historical baggage which we
* ignore entirely. The structure below contains the relevant bits and the
* _enc/_dec functions encode/decode only these fields.
*/
#define SUN_DKMAGIC 55998
#define SUN_NPART 8
#define SUN_RAWPART 2
#define SUN_SIZE 512
#define SUN_VTOC_VERSION 1
#define SUN_VTOC_SANE 0x600DDEEE /* SVR4-compatible VTOC is "sane". */
#define SUN_VOLNAME_LEN 8
/*
* XXX: I am actually not sure if this should be "16 sectors" or "8192 bytes".
* XXX: Considering that Sun went to the effort of getting 512 byte compatible
* XXX: CDROM drives produced my guess is that Sun computers stand little or
* XXX: even no chance of running, much less booting on !=512 byte media.
* XXX: Define this is in terms of bytes since that is easier for us.
*/
#define SUN_BOOTSIZE 8192
/* partition info */
struct sun_dkpart {
u_int32_t sdkp_cyloffset; /* starting cylinder */
u_int32_t sdkp_nsectors; /* number of sectors */
};
struct sun_vtoc_info {
u_int16_t svtoc_tag; /* partition tag */
u_int16_t svtoc_flag; /* partition flags */
};
/* known partition tag values */
#define VTOC_UNASSIGNED 0x00
#define VTOC_BOOT 0x01
#define VTOC_ROOT 0x02
#define VTOC_SWAP 0x03
#define VTOC_USR 0x04
#define VTOC_BACKUP 0x05 /* "c" partition, covers entire disk */
#define VTOC_STAND 0x06
#define VTOC_VAR 0x07
#define VTOC_HOME 0x08
#define VTOC_ALTSCTR 0x09 /* alternate sector partition */
#define VTOC_CACHE 0x0a /* Solaris cachefs partition */
#define VTOC_VXVM_PUB 0x0e /* VxVM public region */
#define VTOC_VXVM_PRIV 0x0f /* VxVM private region */
/* VTOC partition flags */
#define VTOC_UNMNT 0x01 /* unmountable partition */
#define VTOC_RONLY 0x10 /* partition is read/only */
struct sun_disklabel {
char sl_text[128];
/* SVR4 VTOC information */
u_int32_t sl_vtoc_vers; /* == SUN_VTOC_VERSION */
char sl_vtoc_volname[SUN_VOLNAME_LEN];
u_int16_t sl_vtoc_nparts; /* == SUN_NPART */
struct sun_vtoc_info sl_vtoc_map[SUN_NPART]; /* partition tag/flag */
u_int32_t sl_vtoc_sane; /* == SUN_VTOC_SANE */
/* Sun label information */
u_int16_t sl_rpm; /* rotational speed */
u_int16_t sl_pcylinders; /* number of physical cyls */
u_int16_t sl_sparespercyl; /* spare sectors per cylinder */
u_int16_t sl_interleave; /* interleave factor */
u_int16_t sl_ncylinders; /* data cylinders */
u_int16_t sl_acylinders; /* alternate cylinders */
u_int16_t sl_ntracks; /* tracks per cylinder */
u_int16_t sl_nsectors; /* sectors per track */
struct sun_dkpart sl_part[SUN_NPART]; /* partition layout */
u_int16_t sl_magic; /* == SUN_DKMAGIC */
};
int sunlabel_dec(void const *pp, struct sun_disklabel *sl);
void sunlabel_enc(void *pp, struct sun_disklabel *sl);
#endif /* _SYS_SUN_DISKLABEL_H_ */

432
sbin/sunlabel/sunlabel.8
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@ -1,432 +0,0 @@
.\" Copyright (c) 2004
.\" David E. O'Brien. All rights reserved.
.\" Copyright (c) 2004, 2005
.\" Joerg Wunsch. 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
.\"
.\" $FreeBSD$
.\"
.Dd March 30, 2005
.Dt SUNLABEL 8
.Os
.Sh NAME
.Nm sunlabel
.Nd read and write disk pack label suitable for Sun's OpenBoot PROM
.Sh SYNOPSIS
.Nm
.Op Fl r
.Op Fl c No \&| Fl h
.Ar disk
.Nm
.Fl B
.Op Fl b Ar boot1
.Op Fl n
.Ar disk
.Nm
.Fl R
.Op Fl B Op Fl b Ar boot1
.Op Fl r
.Op Fl n
.Op Fl c
.Ar disk protofile
.Nm
.Fl e
.Op Fl B Op Fl b Ar boot1
.Op Fl r
.Op Fl n
.Op Fl c
.Ar disk
.Nm
.Fl w
.Op Fl B Op Fl b Ar boot1
.Op Fl r
.Op Fl n
.Op Fl c
.Ar disk type
.Sh DESCRIPTION
The
.Nm
utility
installs, examines or modifies the
.Em Sun OpenBoot PROM
label on a disk.
In addition,
.Nm
can install bootstrap code.
.Ss Introduction
The label occupies the first sector (i.e., 512 bytes) of each disk.
It starts with a textual description which by convention also mentions
the disk geometry in textual form (number of cylinders, alternate
cylinders, heads, and sectors per track), optionally followed by a
table of SVR4-compatible VTOC tags and flags per partition, followed
by the partition table itself.
Finally, a checksum is recorded to ensure the label has not been
tampered with.
.Pp
The
.Em Sun OpenBoot PROM
label allows for 8 disk partitions.
The partition table lists the starting cylinder of the partition,
plus the size of the partition in 512-byte sectors.
Thus, partitions in the
.Em Sun OpenBoot PROM
must always start at a cylinder boundary (for whatever geometry
emulation has been chosen).
.Pp
The optional SVR4-compatible VTOC tag and flags table is not used
by the
.Fx
kernel.
It is maintained solely for compatibility with the
.Tn Solaris
operating system that might share disks with
.Fx
on the same hardware platform.
.Pp
The
.Em Sun OpenBoot PROM
label is natively understood by the underlying hardware, which can
bootstrap from a single partition entry, as opposed to the very first
block(s) of the entire disk as on many other hardware platforms.
.Pp
Note that the hardware platform mandates that two cylinders are set
aside as
.Em alternate cylinders
which are not available to user programs (and not even through the
.Dq Li backup
partition).
.Ss Options
Options are listed in alphabetical order here.
Note that only those option combinations listed under
.Sx SYNOPSIS
are allowable.
.Bl -tag -width ".Fl b Ar bootpath"
.It Fl b Ar bootpath
Specify that
.Ar bootpath
is to be used as the boot image, rather than the default of
.Pa /boot/boot1 .
.It Fl B
Install bootstrap code onto the disk.
Note that since the underlying hardware platform bootstraps from
partitions, not disks, this operation is only useful if there is
a partition starting at offset 0.
.It Fl c
Use cylinders for partition size display rather than
(512-byte) sectors.
This also changes the default interpretation of the partition
size entries when editing the label, or reading from a prototype
file.
Thus, prototype files are only compatible when both, obtaining
the file and re-installing it is done using the same
.Fl c
option setting.
.It Fl e
Enter edit mode.
See
.Sx Edit mode
below for a more detailed explanation.
.It Fl h
When displaying the label, make the partition size and offset
values
.Dq human readable .
The displayed numbers will get a suffix of
.Ql B
for bytes,
.Ql K
for 1024 bytes each,
.Ql M
for 1048576 bytes each, or
.Ql G
for 1073741824 bytes each appended.
Note that due to possible rounding errors, prototype files
obtained using the
.Fl h
option are not suited for re-installing using the
.Fl R
option.
.It Fl n
No changes.
All operations, checks etc., are performed normally, but nothing
is written to disk.
.It Fl r
Obsolete option that used to indicate that the operation should
be done directly on disk, as opposed through the respective kernel
services.
Ignored.
.It Fl R
Restore label from the prototype in
.Ar protofile .
A prototype file is simply the textual representation of the
label as printed using the first form of the
.Nm
utility shown in the
.Sx SYNOPSIS .
Note that the
.Fl c
option used to obtain the prototype must match the option used
when restoring the label (both present, or both absent).
.It Fl w
Write mode.
Suitable to write an initial label to disk.
The
.Ar type
argument used to be an entry into a table of predefined labels,
but this functionality is not supported by
.Nm .
Instead, the only allowable
.Ar type
argument is the string
.Dq Li auto ,
indicating that an automatically created label should be written
to disk.
This automatism will try to create an initial label that fits as
best as possible into the available disk capacity.
.El
.Pp
If neither of the
.Fl e , R ,
or
.Fl w
options are present, the existing label for
.Ar disk
will be printed to standard output.
.Pp
The
.Ar disk
argument
must be given as a plain disk name, without any leading
.Pa /dev/ .
.Ss Edit mode
In edit mode, the existing label from
.Ar disk
will be read, and put into a template file.
The command referenced by the
.Ev EDITOR
environmental variable will be started to allow the user
to edit the label.
The label is then checked and examined for any errors.
If no errors have been found, the new label is written to disk.
If there were any errors, a message is printed to standard
error output, and the user is given the opportunity to edit
the template file again.
If accepted, editing starts over.
If declined, no changes will
be written to disk.
.Pp
The label presented for editing is the same as the standard
printout, with some added hints about the possible options to
specify the sector size and starting cylinder.
The following areas in the template can be edited:
.Bl -tag -width indent
.It Sy Textual label, geometry emulation
The line
.D1 Li text: Ar XXXX Li cyl Ar CC Li alt 2 hd Ar HH Li sec Ar SS
represents the label text.
It must be retained exactly in the form shown.
The editable text
.Ar XXXX
is a simple (non-whitespace) text describing the disk.
By convention, this text mentions the approximate size of the
disk, as in
.Dq Li SUN9.0G
for a 9 GB disk shipped by Sun.
.Pp
The values
.Ar CC ,
.Ar HH ,
and
.Ar SS
describe the number of cylinders, heads (tracks per
cylinder), and sectors per track respectively.
They might be modified to change the geometry emulation.
Each number must be between 1 and 65535.
The product
.D1 Em (CC + 2) * HH * SS
must be less than or equal to the total number of sectors of the
disk (which is given as a hint in a comment field).
.It Sy Volume name
The volume name (if present) is introduced by the string
.Dq "volume name:" .
It can be up to 8 characters long, and might be useful to distinguish
different disks in a system.
Note that volume names require the VTOC elements to be present, so
any of the VTOC constraints described below need to be obeyed as well
if a volume name is to be set.
Setting an empty volume name will delete it from the label.
.It Sy Partition entries
Partition entries start with a letter from
.Ql a
through
.Ql h ,
immediately followed by a colon, followed by the size of this
partition, and the starting cylinder of the partition.
The unit of the size field defaults to sectors, or to cylinders
if the
.Fl c
option is in effect.
Alternatively, a different unit may be specified by appending
.Ql s
for (512-byte) sectors,
.Ql c
for cylinders,
.Ql k
for kilobytes,
.Ql m
for megabytes, or
.Ql g
for gigabytes.
The last partition entry may specify the size as
.Ql *
to indicate that this entry should consume the rest of disk not
consumed by any other partition so far.
.Pp
The start of partition is always taken as a cylinder number (starting
at 0) since this is what the underlying hardware uses.
Alternatively, specifying it as
.Ql *
will make the computation automatically chose the nearest possible
cylinder boundary.
.Pp
Partition
.Ql c
must always be present, must start at 0, and must cover the entire
disk (without considering the alternate cylinders though).
.Pp
Optionally, each partition entry may be followed by an SVR4-compatible
VTOC tag name, and a flag description.
The following VTOC tag names are known:
.Bl -column -offset indent ".Li unassigned" ".Sy value" ".Sy comment"
.It Sy name Ta Sy value Ta Sy comment
.It Li unassigned Ta No 0x00 Ta \&
.It Li boot Ta No 0x01 Ta \&
.It Li root Ta No 0x02 Ta \&
.It Li swap Ta No 0x03 Ta \&
.It Li usr Ta No 0x04 Ta \&
.It Li backup Ta No 0x05 Ta c partition, entire disk
.It Li stand Ta No 0x06 Ta \&
.It Li var Ta No 0x07 Ta \&
.It Li home Ta No 0x08 Ta \&
.It Li altsctr Ta No 0x09 Ta alternate sector partition
.It Li cache Ta No 0x0a Ta Solaris cachefs partition
.It Li VxVM_pub Ta No 0x0e Ta VxVM public region
.It Li VxVM_priv Ta No 0x0f Ta VxVM private region
.El
.Pp
The following VTOC flags are known:
.Bl -column -offset indent ".Sy name" ".Sy value" ".Sy comment"
.It Sy name Ta Sy value Ta Sy comment
.It Li wm Ta No 0x00 Ta read/write, mountable
.It Li wu Ta No 0x01 Ta read/write, unmountable
.It Li rm Ta No 0x10 Ta read/only, mountable
.It Li ru Ta No 0x11 Ta read/only, unmountable
.El
.Pp
Optionally, both the tag and/or the flag name may be specified
numerically, using standard
.Ql C
numerical notation (prefix
.Ql 0x
for hexadecimal numbers,
.Ql 0
for octal numbers).
If the flag field is omitted, it defaults to
.Ql wm .
If the tag field is also omitted, it defaults to
.Dq Li unassigned .
If none of the partitions lists any VTOC tag/flags, no
SVR4-compatible VTOC elements will be written to disk.
If VTOC-style elements are present, partition
.Ql c
must be marked as
.Dq Li backup
(and should be marked
.Ql wu ) .
.El
.Pp
When checking the label, partition
.Ql c
is checked for presence, and for the mentioned restrictions.
All other partitions are checked for possible overlaps, as
well as for not extending past the end of unit.
If VTOC-style elements are present, overlaps of unmountable
partitions against other partitions will be warned still but
do not cause a rejection of the label.
That way,
.Em encapsulated disks
of volume management software are acceptable as long as the
volume management partitions are clearly marked as unmountable.
.Pp
Any other fields in the label template are informational only,
and will not be parsed when reading the label.
.Pp
Note that when changing the geometry emulation by editing the
textual description line, all partition entries will be
considered based on the new geometry emulation.
.Sh ENVIRONMENT
.Bl -tag -width ".Ev EDITOR" -compact
.It Ev EDITOR
Name of the command to edit the template file in edit-mode.
Defaults to
.Xr vi 1 .
.El
.Sh FILES
.Bl -tag -width ".Pa /boot/boot1" -compact
.It Pa /boot/boot1
Default boot image.
.El
.Sh SEE ALSO
.Xr vi 1 ,
.Xr geom 4 ,
.Xr bsdlabel 8
.Sh HISTORY
The
.Nm
utility appeared in
.Fx 5.1 .
.Sh AUTHORS
The
.Nm
utility was written by
.An Jake Burkholder ,
modeling it after the
.Xr bsdlabel 8
command available on other architectures.
.Pp
.An -nosplit
This man page was initially written by
.An David O'Brien ,
and later substantially updated by
.An J\(:org Wunsch .
.Sh BUGS
Installing bootstrap code onto an entire disk is merely pointless.
.Nm
should rather support installing bootstrap code into a partition
instead.
.Pp
The
.Dq auto
layout algorithm could be smarter.
By now, it tends to emulate fairly large cylinders which due to
the two reserved alternate cylinders causes a fair amount of
wasted disk space.

1002
sbin/sunlabel/sunlabel.c
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184
sbin/sunlabel/sunlabel_enc.c
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2003 Jake Burkholder
* Copyright (c) 2003 Poul-Henning Kamp
* Copyright (c) 2004,2005 Joerg Wunsch
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
/* Functions to encode or decode struct sun_disklabel into a bytestream
* of correct endianness and packing.
*
* NB! This file must be usable both in kernel and userland.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/endian.h>
#include <sys/errno.h>
#ifdef _KERNEL
#include <sys/systm.h>
#else
#include <string.h>
#endif
#include "sun_disklabel.h"
#define SL_TEXT 0x0
#define SL_TEXT_SIZEOF 0x80
#define SL_VTOC_VERS 0x80
#define SL_VTOC_VOLNAME 0x84
#define SL_VTOC_NPART 0x8c
#define SL_VTOC_MAP 0x8e
#define SL_VTOC_SANITY 0xbc
#define SL_RPM 0x1a4
#define SL_PCYLINDERS 0x1a6
#define SL_SPARESPERCYL 0x1a8
#define SL_INTERLEAVE 0x1ae
#define SL_NCYLINDERS 0x1b0
#define SL_ACYLINDERS 0x1b2
#define SL_NTRACKS 0x1b4
#define SL_NSECTORS 0x1b6
#define SL_PART 0x1bc
#define SL_MAGIC 0x1fc
#define SL_CKSUM 0x1fe
#define SDKP_CYLOFFSET 0
#define SDKP_NSECTORS 0x4
#define SDKP_SIZEOF 0x8 /* size of a partition entry */
#define SVTOC_TAG 0
#define SVTOC_FLAG 0x2
#define SVTOC_SIZEOF 0x4 /* size of a VTOC tag/flag entry */
/*
* Decode the relevant fields of a sun disk label, and return zero if the
* magic and checksum works out OK.
*/
int
sunlabel_dec(void const *pp, struct sun_disklabel *sl)
{
const uint8_t *p;
size_t i;
u_int u;
uint32_t vtocsane;
uint16_t npart;
p = pp;
for (i = 0; i < sizeof(sl->sl_text); i++)
sl->sl_text[i] = p[SL_TEXT + i];
sl->sl_rpm = be16dec(p + SL_RPM);
sl->sl_pcylinders = be16dec(p + SL_PCYLINDERS);
sl->sl_sparespercyl = be16dec(p + SL_SPARESPERCYL);
sl->sl_interleave = be16dec(p + SL_INTERLEAVE);
sl->sl_ncylinders = be16dec(p + SL_NCYLINDERS);
sl->sl_acylinders = be16dec(p + SL_ACYLINDERS);
sl->sl_ntracks = be16dec(p + SL_NTRACKS);
sl->sl_nsectors = be16dec(p + SL_NSECTORS);
for (i = 0; i < SUN_NPART; i++) {
sl->sl_part[i].sdkp_cyloffset = be32dec(p + SL_PART +
(i * SDKP_SIZEOF) + SDKP_CYLOFFSET);
sl->sl_part[i].sdkp_nsectors = be32dec(p + SL_PART +
(i * SDKP_SIZEOF) + SDKP_NSECTORS);
}
sl->sl_magic = be16dec(p + SL_MAGIC);
vtocsane = be32dec(p + SL_VTOC_SANITY);
npart = be16dec(p + SL_VTOC_NPART);
if (vtocsane == SUN_VTOC_SANE && npart == SUN_NPART) {
/*
* Seems we've got SVR4-compatible VTOC information
* as well, decode it.
*/
sl->sl_vtoc_sane = vtocsane;
sl->sl_vtoc_vers = be32dec(p + SL_VTOC_VERS);
memcpy(sl->sl_vtoc_volname, p + SL_VTOC_VOLNAME,
SUN_VOLNAME_LEN);
sl->sl_vtoc_nparts = SUN_NPART;
for (i = 0; i < SUN_NPART; i++) {
sl->sl_vtoc_map[i].svtoc_tag = be16dec(p +
SL_VTOC_MAP + (i * SVTOC_SIZEOF) + SVTOC_TAG);
sl->sl_vtoc_map[i].svtoc_flag = be16dec(p +
SL_VTOC_MAP + (i * SVTOC_SIZEOF) + SVTOC_FLAG);
}
}
for (i = u = 0; i < SUN_SIZE; i += 2)
u ^= be16dec(p + i);
if (u == 0 && sl->sl_magic == SUN_DKMAGIC)
return (0);
else
return (EINVAL);
}
/*
* Encode the relevant fields into a sun disklabel, compute new checksum.
*/
void
sunlabel_enc(void *pp, struct sun_disklabel *sl)
{
uint8_t *p;
size_t i;
u_int u;
p = pp;
for (i = 0; i < SL_TEXT_SIZEOF; i++)
p[SL_TEXT + i] = sl->sl_text[i];
be16enc(p + SL_RPM, sl->sl_rpm);
be16enc(p + SL_PCYLINDERS, sl->sl_pcylinders);
be16enc(p + SL_SPARESPERCYL, sl->sl_sparespercyl);
be16enc(p + SL_INTERLEAVE, sl->sl_interleave);
be16enc(p + SL_NCYLINDERS, sl->sl_ncylinders);
be16enc(p + SL_ACYLINDERS, sl->sl_acylinders);
be16enc(p + SL_NTRACKS, sl->sl_ntracks);
be16enc(p + SL_NSECTORS, sl->sl_nsectors);
for (i = 0; i < SUN_NPART; i++) {
be32enc(p + SL_PART + (i * SDKP_SIZEOF) + SDKP_CYLOFFSET,
sl->sl_part[i].sdkp_cyloffset);
be32enc(p + SL_PART + (i * SDKP_SIZEOF) + SDKP_NSECTORS,
sl->sl_part[i].sdkp_nsectors);
}
be16enc(p + SL_MAGIC, sl->sl_magic);
if (sl->sl_vtoc_sane == SUN_VTOC_SANE
&& sl->sl_vtoc_nparts == SUN_NPART) {
/*
* Write SVR4-compatible VTOC elements.
*/
be32enc(p + SL_VTOC_VERS, sl->sl_vtoc_vers);
be32enc(p + SL_VTOC_SANITY, SUN_VTOC_SANE);
memcpy(p + SL_VTOC_VOLNAME, sl->sl_vtoc_volname,
SUN_VOLNAME_LEN);
be16enc(p + SL_VTOC_NPART, SUN_NPART);
for (i = 0; i < SUN_NPART; i++) {
be16enc(p + SL_VTOC_MAP + (i * SVTOC_SIZEOF)
+ SVTOC_TAG,
sl->sl_vtoc_map[i].svtoc_tag);
be16enc(p + SL_VTOC_MAP + (i * SVTOC_SIZEOF)
+ SVTOC_FLAG,
sl->sl_vtoc_map[i].svtoc_flag);
}
}
for (i = u = 0; i < SUN_SIZE; i += 2)
u ^= be16dec(p + i);
be16enc(p + SL_CKSUM, u);
}