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JimMockUpdated and restructured by JakeHambyOriginally contributed by Configuring the FreeBSD KernelSynopsiskernelbuilding a custom kernelThe kernel is the core of the &os; operating system. It is
responsible for managing memory, enforcing security controls,
networking, disk access, and much more. While more and more of &os;
becomes dynamically configurable it is still occasionally necessary to
reconfigure and recompile your kernel.After reading this chapter, you will know:Why you might need to build a custom kernel.How to write a kernel configuration file, or alter an existing
configuration file.How to use the kernel configuration file to create and build a
new kernel.How to install the new kernel.How to create any entries in /dev that may
be required.How to troubleshoot if things go wrong.Why Build a Custom Kernel?Traditionally, &os; has had what is called a
monolithic kernel. This means that the kernel was one
large program, supported a fixed list of devices, and if you wanted to
change the kernel's behavior then you had to compile a new kernel, and
then reboot your computer with the new kernel.Today, &os; is rapidly moving to a model where much of the
kernel's functionality is contained in modules which can be dynamically
loaded and unloaded from the kernel as necessary. This allows the
kernel to adapt to new hardware suddenly becoming available (such as
PCMCIA cards in a laptop), or for new functionality to be brought into
the kernel that was not necessary when the kernel was originally
compiled. This is known as a modular kernel. Colloquially these are called KLDs.Despite this, it is still necessary to carry out some static kernel
configuration. In some cases this is because the functionality is so
tied to the kernel that it can not be made dynamically loadable. In
others it may simply be because no one has yet taken the time to write a
dynamic loadable kernel module for that functionality yet.Building a custom kernel is one of the most important rites of
passage nearly every Unix user must endure. This process, while
time consuming, will provide many benefits to your &os; system.
Unlike the GENERIC kernel, which must support a
wide range of hardware, a custom kernel only contains support for
your PC's hardware. This has a number of
benefits, such as:Faster boot time. Since the kernel will only probe the
hardware you have on your system, the time it takes your system to
boot will decrease dramatically.Less memory usage. A custom kernel often uses less memory
than the GENERIC kernel, which is important
because the kernel must always be present in real
memory. For this reason, a custom kernel is especially useful
on a system with a small amount of RAM.Additional hardware support. A custom kernel allows you to
add in support for devices such as sound cards, which are not
present in the GENERIC kernel.Building and Installing a Custom Kernelkernelbuilding / installingFirst, let us take a quick tour of the kernel build directory.
All directories mentioned will be relative to the main
/usr/src/sys directory, which is also
accessible through /sys. There are a number of
subdirectories here representing different parts of the kernel, but
the most important, for our purposes, are
arch/conf, where you
will edit your custom kernel configuration, and
compile, which is the staging area where your
kernel will be built. arch represents
either i386, alpha, or
pc98 (an alternative development branch of PC
hardware, popular in Japan). Everything inside a particular
architecture's directory deals with that architecture only; the rest
of the code is common to all platforms to which &os; could
potentially be ported. Notice the logical organization of the
directory structure, with each supported device, file system, and
option in its own subdirectory. &os; 5.X and up has support for
sparc64, and a few other architectures under
development.If there is not a
/usr/src/sys directory on your system, then
the kernel source has not been installed. The easiest way to
do this is by running /stand/sysinstall as
root, choosing Configure,
then Distributions, then
src, then sys. If you
have an aversion to sysinstall and
you have access to an official &os; CDROM, then
you can also install the source from the command line:&prompt.root; mount /cdrom
&prompt.root; mkdir -p /usr/src/sys
&prompt.root; ln -s /usr/src/sys /sys
&prompt.root; cat /cdrom/src/ssys.[a-d]* | tar -xzvf -Next, move to the
arch/conf directory
and copy the GENERIC configuration file to the
name you want to give your kernel. For example:&prompt.root; cd /usr/src/sys/i386/conf
&prompt.root; cp GENERIC MYKERNELTraditionally, this name is in all capital letters and, if you
are maintaining multiple &os; machines with different hardware,
it is a good idea to name it after your machine's hostname. We will
call it MYKERNEL for the purpose of this
example.Storing your kernel config file directly under
/usr/src can be a bad idea. If you are
experiencing problems it can be tempting to just delete
/usr/src and start again. Five seconds after
you do that you realize that you have deleted your custom kernel
config file. Do not edit GENERIC
directly, as it may get overwritten the next time you
update your source tree, and
your kernel modifications will be lost.You might want to keep your kernel config file elsewhere, and then
create a symbolic link to the file in the i386
directory.For example:&prompt.root; cd /usr/src/sys/i386/conf
&prompt.root; mkdir /root/kernels
&prompt.root; cp GENERIC /root/kernels/MYKERNEL
&prompt.root; ln -s /root/kernels/MYKERNELYou must execute these and all of the following commands under
the root account or you will get
permission denied errors.Now, edit MYKERNEL with your favorite text
editor. If you are just starting out, the only editor available
will probably be vi, which is too complex to
explain here, but is covered well in many books in the bibliography. However, &os; does
offer an easier editor called ee which, if
you are a beginner, should be your editor of choice. Feel free to
change the comment lines at the top to reflect your configuration or
the changes you have made to differentiate it from
GENERIC.SunOSIf you have built a kernel under SunOS or some other BSD
operating system, much of this file will be very familiar to you.
If you are coming from some other operating system such as DOS, on
the other hand, the GENERIC configuration file
might seem overwhelming to you, so follow the descriptions in the
Configuration File
section slowly and carefully.Be sure to always check the file
/usr/src/UPDATING, before you perform any update
steps, in the case you sync your source tree with the
latest sources of the &os; project.
In this file all important issues with updating &os;
are typed out. /usr/src/UPDATING always fits
your version of the &os; source, and is therefore more accurate
for new information than the handbook.You must now compile the source code for the kernel. There are two
procedures you can use to do this, and the one you will use depends on
why you are rebuilding the kernel, and the version of &os; you are
running.If you have installed only the kernel
source code, use procedure 1.If you are running a &os; version prior to 4.0, and you are
not upgrading to &os; 4.0 or higher using
the make world procedure, use procedure 1.
If you are building a new kernel without updating the source
code (perhaps just to add a new option, such as
IPFIREWALL) you can use either procedure.If you are rebuilding the kernel as part of a
make world process, use procedure 2.
- Procedure 1. Building a kernel the traditional way
+ Procedure 1. Building a Kernel the Traditional WayRun &man.config.8; to generate the kernel source code.&prompt.root; /usr/sbin/config MYKERNELChange into the build directory. This is printed out after running the aforementioned
command.&prompt.root; cd ../compile/MYKERNELFor &os; version prior to 5.0, use instead:&prompt.root; cd ../../compile/MYKERNELCompile the kernel.&prompt.root; make depend
&prompt.root; makeInstall the new kernel.&prompt.root; make install
- Procedure 2. Building a kernel the new
- way
+ Procedure 2. Building a Kernel the New
+ WayChange to the /usr/src directory.&prompt.root; cd /usr/srcCompile the kernel.&prompt.root; make buildkernel KERNCONF=MYKERNELInstall the new kernel.&prompt.root; make installkernel KERNCONF=MYKERNELIn &os; 4.2 and older you must replace
KERNCONF= with KERNEL=.
4.2-STABLE that was fetched before Feb 2nd, 2001 does not
recognize KERNCONF=.cvsupanonymous CVSCTMCVSanonymousIf you have not upgraded your source
tree in any way (you have not run CVSup,
CTM, or used
anoncvs), then you should use the
config, make depend,
make, make install sequence.
kernel.oldThe new kernel will be copied to the root directory as
/kernel and the old kernel will be moved to
/kernel.old. Now, shutdown the system and
reboot to use your new kernel. In case something goes wrong, there are
some troubleshooting
instructions at the end of this chapter. Be sure to read the
section which explains how to recover in case your new kernel does not boot.As of &os; 5.0, kernels are installed along with their
modules in /boot/kernel, and old kernels
will be backed up as /boot/kernel.old.
Other files relating to the boot process, such as the boot
&man.loader.8; and configuration are also stored in
/boot. Third party or custom modules
may be placed in /boot/modules, although
users should be aware that keeping modules in sync with the
compiled kernel is very important. Modules not intended
to run with the compiled kernel may result in instability
or incorrectness.If you have added any new devices (such as sound cards) and you
are running &os; 4.X or previous versions, you
may have to add some device
nodes to your /dev directory before
you can use them. For more information, take a look at Making
Device Nodes section later on in this chapter.The Configuration FilekernelLINTLINTkernelconfig fileThe general format of a configuration file is quite simple.
Each line contains a keyword and one or more arguments. For
simplicity, most lines only contain one argument. Anything
following a # is considered a comment and
ignored. The following sections describe each keyword, generally in
the order they are listed in GENERIC, although
some related keywords have been grouped together in a single section
(such as Networking) even though they are actually scattered
throughout the GENERIC file. An exhaustive list of options and more
detailed explanations of the device lines is present in the
LINT configuration file, located in the same
directory as GENERIC. If you are in doubt as
to the purpose or necessity of a line, check first in
LINT.In &os; 5.X and above the LINT is non-existent.
See the NOTES file for architecture dependent options.
Some options, mainly architecture independent ones, are stored in the
/usr/src/sys/conf/NOTES file. Its advisable to review
the options in here also.
- Quoting numbers
+ Quoting NumbersIn all versions of &os; up to and including 3.X,
&man.config.8; required that any strings in the configuration file
that contained numbers used as text had to be enclosed in double
quotes.This requirement was removed in the 4.X branch, which this
book covers, so if you are on a pre-4.X system, see the
/usr/src/sys/i386/conf/LINT and
/usr/src/sys/i386/conf/GENERIC
files on your system for examples.kernelexample config fileThe following is an example GENERIC kernel
configuration file with various additional comments where needed for
clarity. This example should match your copy in
/usr/src/sys/i386/conf/GENERIC fairly
closely. For details of all the possible kernel options, see
/usr/src/sys/i386/conf/LINT.#
# GENERIC -- Generic kernel configuration file for &os;/i386
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
# http://www.&os;.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# &os; World Wide Web server (http://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.380 2003/03/29 13:36:41 mdodd Exp $The following are the mandatory keywords required in
every kernel you build:kernel optionsmachinemachine i386This is the machine architecture. It must be either
i386, pc98,
sparc64, alpha,
ia64, amd64, or
powerpc.kernel optionscpucpu I486_CPU
cpu I586_CPU
cpu I686_CPUThe above option specifies the type of CPU you have in your system.
You may have multiple instances of the CPU line (i.e., you are not
sure whether you should use I586_CPU or
I686_CPU), however, for a custom kernel, it is
best to specify only the CPU you have. If you are unsure of your
CPU type, you can check the /var/run/dmesg.boot file to view your boot
up messages.kernel optionscpu typeSupport for I386_CPU is still provided in the
source of &os;, but it is disabled by default in both -STABLE and
-CURRENT. This means that to install &os; with a 386-class cpu, you now
have the following options:Install an older &os; release and rebuild from source as
described in .Build the userland and kernel on a newer machine and install on
the 386 using the precompiled /usr/obj
files.Roll your own release of FreeBSD which includes
I386_CPU support in the kernels of the
installation CD-ROM.The first of these options is probably the easiest of all, but you
will need a lot of disk space on a 386-class machine which may be
difficult to find.kernel optionsidentident GENERICThis is the identification of the kernel. You should change
this to whatever you named your kernel,
i.e. MYKERNEL if you have followed the
instructions of the previous examples. The value you put in the
ident string will print when you boot up the
kernel, so it is useful to give the new kernel a different name if you
want to keep it separate from your usual kernel (i.e. you want to
build an experimental kernel).kernel optionsmaxusersmaxusers nThe maxusers option sets the size of a number
of important system tables. This number is supposed to be roughly
equal to the number of simultaneous users you expect to have on your
machine.Starting with &os; 4.5, the system will auto-tune this setting
for you if you explicitly set it to 0The auto-tuning algorithm sets maxuser equal
to the amount of memory in the system, with a minimum of 32, and a
maximum of 384..
In &os;-5.x, maxusers will default to
0 if not specified. If you are using an
version of &os; earlier than 4.5, or you want to manage it
yourself you will want to set
maxusers to at least 4, especially if you are
using the X Window System or compiling software. The reason is that
the most important table set by maxusers is the
maximum number of processes, which is set to 20 + 16 *
maxusers, so if you set maxusers to 1,
then you can only have 36 simultaneous processes, including the 18
or so that the system starts up at boot time, and the 15 or so you
will probably create when you start the X Window System. Even a
simple task like reading a manual page will start up nine processes to
filter, decompress, and view it. Setting
maxusers to 64 will allow you to have up to 1044
simultaneous processes, which should be enough for nearly all uses.
If, however, you see the dreaded proc table
full error when trying to start another program, or are
running a server with a large number of simultaneous users (like
ftp.FreeBSD.org), you can always
increase the number and rebuild.maxusers does not
limit the number of users which can log into your machine. It
simply sets various table sizes to reasonable values considering
the maximum number of users you will likely have on your system
and how many processes each of them will be running. One keyword
which does limit the number of simultaneous
remote logins and X terminal windows is pseudo-device pty
16.# Floating point support - do not disable.
device npx0 at nexus? port IO_NPX irq 13npx0 is the interface to the floating point
math unit in &os;, which is either the hardware co-processor or
the software math emulator. This is not
optional.# Pseudo devices - the number indicates how many units to allocate.
pseudo-device loop # Network loopbackThis is the generic loopback device for TCP/IP. If you telnet
or FTP to localhost (a.k.a., 127.0.0.1) it will come back at you through
this pseudo-device. This is mandatory.Everything that follows is more or less optional. See the notes
underneath or next to each option for more information.#To statically compile in device wiring instead of /boot/device.hints
#hints "GENERIC.hints" #Default places to look for devices.In &os; 5.x and newer versions the &man.device.hints.5; is
used to configure options of the device drivers. The default
location that &man.loader.8; will check at boot time is
/boot/device.hints. Using the
hints option you can compile these hints
statically into your kernel. Then there is no need to create a
device.hints file in
/boot.#makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbolsThe normal build process of the &os; does not include
debugging information when building the kernel and strips most
symbols after the resulting kernel is linked, to save some space
at the install location. If you are going to do tests of kernels
in the -CURRENT branch or develop changes of your own for the &os;
kernel, you might want to uncomment this line. It will enable the
use of the option which enables debugging
information when passed to &man.gcc.1;. The same can be
accomplished by the &man.config.8; option, if
you're using the old procedure of building your kernels (config;
make depend; etc.).options MATH_EMULATE #Support for x87 emulationThis line allows the kernel to simulate a math co-processor if
your computer does not have one (386 or 486SX). If you have a
486DX, or a 386 or 486SX (with a separate 387 or 487 chip), or
higher (Pentium, Pentium II, etc.), you can comment this line
out.The normal math co-processor emulation routines that come with
&os; are not very accurate. If you do not
have a math co-processor, and you need the best accuracy, it is
recommended that you change this option to
GPL_MATH_EMULATE to use the GNU math support,
which is not included by default for licensing reasons.In &os; 5.0, math emulation is disabled by default,
as older CPUs that do not have native floating point math support
are far less common, and in many cases not supported by the native
&os; kernel without other additional options.options INET #InterNETworkingNetworking support. Leave this in, even if you do not plan to
be connected to a network. Most programs require at least loopback
networking (i.e., making network connections within your PC), so
this is essentially mandatory.options INET6 #IPv6 communications protocolsThis enables the IPv6 communication protocols.options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]This is the basic hard drive Filesystem. Leave it in if you
boot from the hard disk.In &os; 5.0, FFS_ROOT is no longer
required.options UFS_ACL #Support for access control listsThis option, present only in &os; 5.0, enables kernel support
for access control lists. This relies on the use of extended
attributes and UFS2, and the feature is described in detail
in the . ACLs are enabled by default, and should not be
disabled in the kernel if they have been used previously on a file
system, as this will remove the access control lists changing the
way files are protected in unpredictable ways.options UFS_DIRHASH #Improve performance on big directoriesThis option includes some code to speed up disk operations on large
directories, at the expense of using a some additional memory. You
would normally keep this for a large server, or interactive workstation,
and remove it if you are using &os; on a smaller system where memory
is at a premium and disk access speed is less important, such as a
firewall.options SOFTUPDATES #Enable FFS Soft Updates supportThis option enables Soft Updates in the kernel, this will help speed
up write access on the disks. They are enabled by default in the 4.X branch
but may not be turned on. Review the output from &man.mount.8; to see
if you have them enabled. If you do not see the soft-updates option then
you will need to activate it using the &man.tunefs.8; or &man.newfs.8;
for new filesystems.options MFS #Memory Filesystem
options MD_ROOT #MD is a potential root deviceThis is the memory-mapped Filesystem. This is basically a RAM
disk for fast storage of temporary files, useful if you have a lot
of swap space that you want to take advantage of. A perfect place
to mount an MFS partition is on the /tmp
directory, since many programs store temporary data here. To mount
an MFS RAM disk on /tmp, add the following line
to /etc/fstab:/dev/ad1s2b /tmp mfs rw 0 0Now you simply need to either reboot, or run the command
mount /tmp.In &os; 5.0, &man.md.4;-backed UFS file systems are
used for memory file systems rather than MFS. Information on
configuring MD-backed file systems may be found in the man pages
for &man.mdconfig.8; and &man.mdmfs.8;. As a result, the
MFS option is no longer supported.kernel optionsNFSkernel optionsNFS_ROOToptions NFS #Network Filesystem
options NFS_ROOT #NFS usable as root device, NFS requiredThe network Filesystem. Unless you plan to mount partitions
from a Unix file server over TCP/IP, you can comment these
out.kernel optionsMSDOSFSoptions MSDOSFS #MSDOS FilesystemThe MS-DOS Filesystem. Unless you plan to mount a DOS formatted
hard drive partition at boot time, you can safely comment this out.
It will be automatically loaded the first time you mount a DOS
partition, as described above. Also, the excellent
mtools software (in the ports collection)
allows you to access DOS floppies without having to mount and
unmount them (and does not require MSDOSFS at
all).options CD9660 #ISO 9660 Filesystem
options CD9660_ROOT #CD-ROM usable as root, CD9660 requiredThe ISO 9660 Filesystem for CDROMs. Comment it out if you do
not have a CDROM drive or only mount data CDs occasionally (since it
will be dynamically loaded the first time you mount a data CD).
Audio CDs do not need this Filesystem.options PROCFS #Process filesystemThe process filesystem. This is a pretend
filesystem mounted on /proc which allows
programs like &man.ps.1; to give you more information on what
processes are running. In &os; 5.0, use of PROCFS
is not required under most circumstances, as most
debugging and monitoring tools have been adapted to run without
PROCFS. In addition, 5.0-CURRENT kernels
making use of PROCFS must now also include
support for PSEUDOFS:options PSEUDOFS #Pseudo-filesystem frameworkPSEUDOFS is not available in &os; 4.X.
Unlike in &os; 4.X, new installs of &os; 5.0 will not mount
the process file system by default.options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]Compatibility with 4.3BSD. Leave this in; some programs will
act strangely if you comment this out.options COMPAT_FREEBSD4 #Compatible with &os;4This option is required on &os; 5.0 i386 and alpha systems
to support applications compiled on older versions of &os;
that use older system call interfaces. It is recommended that
this option be used on all i386 and alpha systems that may
run older applications; platforms that gained support only in
5.0, such as ia64 and sparc64, do not require this option.options SCSI_DELAY=15000 #Delay (in ms) before probing SCSIThis causes the kernel to pause for 15 seconds before probing
each SCSI device in your system. If you only have IDE hard drives,
you can ignore this, otherwise you will probably want to lower this
number, perhaps to 5 seconds, to speed up booting. Of course, if
you do this, and &os; has trouble recognizing your SCSI devices,
you will have to raise it back up.options UCONSOLE #Allow users to grab the consoleAllow users to grab the console, which is useful for X users.
For example, you can create a console xterm
by typing xterm
-C, which will display any &man.write.1;,
&man.talk.1;, and any other messages you receive, as well
as any console messages sent by the kernel.In &os; 5.0, UCONSOLE is no
longer required.options USERCONFIG #boot -c editorThis option allows you to boot the configuration editor from the
boot menu.options VISUAL_USERCONFIG #visual boot -c editorThis option allows you to boot the visual configuration editor
from the boot menu.From &os; versions 5.0 and later, userconfig has been depreciated
in favor of the new &man.device.hints.5; method. For more information
on &man.device.hints.5; please visit options KTRACE #ktrace(1) supportThis enables kernel process tracing, which is useful in
debugging.options SYSVSHM #SYSV-style shared memoryThis option provides for System V shared memory. The most
common use of this is the XSHM extension in X, which many
graphics-intensive programs will automatically take advantage of for
extra speed. If you use X, you will definitely want to include
this.options SYSVSEM #SYSV-style semaphoresSupport for System V semaphores. Less commonly used but only
adds a few hundred bytes to the kernel.options SYSVMSG #SYSV-style message queuesSupport for System V messages. Again, only adds a few hundred
bytes to the kernel.The &man.ipcs.1; command will list any processes using each of
these System V facilities.options P1003_1B #Posix P1003_1B real-time extensions
options _KPOSIX_PRIORITY_SCHEDULINGReal-time extensions added in the 1993 POSIX. Certain
applications in the ports collection use these
(such as StarOffice).In &os; 5.0, all of this functionality is now
provided by the _KPOSIX_PRIORITY_SCHEDULING
option, and P1003_1B is no longer
required.kernel optionsICMP_BANDLIMDenial of Service (DoS)options ICMP_BANDLIM #Rate limit bad repliesThis option enables ICMP error response bandwidth limiting. You
typically want this option as it will help protect the machine from
denial of service packet attacks.In &os; 5.0, this feature is enabled by default and
the ICMP_BANDLIM option is not required.
kernel optionsSMP# To make an SMP kernel, the next two are needed
#options SMP # Symmetric MultiProcessor Kernel
#options APIC_IO # Symmetric (APIC) I/OThe above are both required for SMP support.device isaAll PCs supported by &os; have one of these. If you have an
IBM PS/2 (Micro Channel Architecture), &os; provides some limited support at
this time. For more information about the MCA support, see /usr/src/sys/i386/conf/LINT.device eisaInclude this if you have an EISA motherboard. This enables
auto-detection and configuration support for all devices on the EISA
bus.device pciInclude this if you have a PCI motherboard. This enables
auto-detection of PCI cards and gatewaying from the PCI to ISA
bus.device agpInclude this if you have an AGP card in the system. This
will enable support for AGP, and AGP GART for boards which
have these features.# Floppy drives
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
device fd1 at fdc0 drive 1This is the floppy drive controller. fd0 is
the A: floppy drive, and
fd1 is the B:
drive.device ataThis driver supports all ATA and ATAPI devices. You only need
one device ata line for the kernel to detect all
PCI ATA/ATAPI devices on modern machines.device atadisk # ATA disk drivesThis is needed along with device ata for
ATA disk drives.
device atapicd # ATAPI CDROM drivesThis is needed along with device ata for
ATAPI CDROM drives.device atapifd # ATAPI floppy drivesThis is needed along with device ata for
ATAPI floppy drives.device atapist # ATAPI tape drivesThis is needed along with device ata for
ATAPI tape drives.options ATA_STATIC_ID #Static device numberingThis makes the controller number static (like the old driver) or
else the device numbers are dynamically allocated.# ATA and ATAPI devices
device ata0 at isa? port IO_WD1 irq 14
device ata1 at isa? port IO_WD2 irq 15Use the above for older, non-PCI systems.# SCSI Controllers
device ahb # EISA AHA1742 family
device ahc # AHA2940 and onboard AIC7xxx devices
device amd # AMD 53C974 (Teckram DC-390(T))
device dpt # DPT Smartcache - See LINT for options!
device isp # Qlogic family
device ncr # NCR/Symbios Logic
device sym # NCR/Symbios Logic (newer chipsets)
device adv0 at isa?
device adw
device bt0 at isa?
device aha0 at isa?
device aic0 at isa?SCSI controllers. Comment out any you do not have in your
system. If you have an IDE only system, you can remove these
altogether.# SCSI peripherals
device scbus # SCSI bus (required)
device da # Direct Access (disks)
device sa # Sequential Access (tape etc)
device cd # CD
device pass # Passthrough device (direct SCSI
access)SCSI peripherals. Again, comment out any you do not have, or if
you have only IDE hardware, you can remove them completely.# RAID controllers
device ida # Compaq Smart RAID
device amr # AMI MegaRAID
device mlx # Mylex DAC960 familySupported RAID controllers. If you do not have any of these,
you can comment them out or remove them.# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc0 at isa? port IO_KBDThe keyboard controller (atkbdc) provides I/O
services for the AT keyboard and PS/2 style pointing devices. This
controller is required by the keyboard driver
(atkbd) and the PS/2 pointing device driver
(psm).device atkbd0 at atkbdc? irq 1The atkbd driver, together with
atkbdc controller, provides access to the AT 84
keyboard or the AT enhanced keyboard which is connected to the AT
keyboard controller.device psm0 at atkbdc? irq 12Use this device if your mouse plugs into the PS/2 mouse
port.device vga0 at isa?The video card driver.# splash screen/screen saver
pseudo-device splashSplash screen at start up! Screen savers require this
too.# syscons is the default console driver, resembling an SCO console
device sc0 at isa?sc0 is the default console driver, which
resembles a SCO console. Since most full-screen programs access the
console through a terminal database library like
termcap, it should not matter whether you use
this or vt0, the VT220
compatible console driver. When you log in, set your
TERM variable to scoansi if
full-screen programs have trouble running under this console.# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device vt0 at isa?
#options XSERVER # support for X server on a vt console
#options FAT_CURSOR # start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options PCVT_SCANSET=2 # IBM keyboards are non-stdThis is a VT220-compatible console driver, backward compatible to
VT100/102. It works well on some laptops which have hardware
incompatibilities with sc0. Also set your
TERM variable to vt100 or
vt220 when you log in. This driver might also
prove useful when connecting to a large number of different machines
over the network, where termcap or
terminfo entries for the sc0
device are often not available — vt100
should be available on virtually any platform.# Power management support (see LINT for more options)
device apm0 at nexus? disable flags 0x20 # Advanced Power ManagementAdvanced Power Management support. Useful for laptops.# PCCARD (PCMCIA) support
device card
device pcic0 at isa? irq 10 port 0x3e0 iomem 0xd0000
device pcic1 at isa? irq 11 port 0x3e2 iomem 0xd4000 disablePCMCIA support. You want this if you are using a
laptop.# Serial (COM) ports
device sio0 at isa? port IO_COM1 flags 0x10 irq 4
device sio1 at isa? port IO_COM2 irq 3
device sio2 at isa? disable port IO_COM3 irq 5
device sio3 at isa? disable port IO_COM4 irq 9These are the four serial ports referred to as COM1 through COM4
in the MS-DOS/Windows world.If you have an internal modem on COM4 and a serial port at
COM2, you will have to change the IRQ of the modem to 2 (for
obscure technical reasons, IRQ2 = IRQ 9) in order to access it
from &os;. If you have a multiport serial card, check the
manual page for &man.sio.4; for more information on the proper
values for these lines. Some video cards (notably those based on
S3 chips) use IO addresses in the form of
0x*2e8, and since many cheap serial cards do
not fully decode the 16-bit IO address space, they clash with
these cards making the COM4 port practically unavailable.Each serial port is required to have a unique IRQ (unless you
are using one of the multiport cards where shared interrupts are
supported), so the default IRQs for COM3 and COM4 cannot be
used.# Parallel port
device ppc0 at isa? irq 7This is the ISA-bus parallel port interface.device ppbus # Parallel port bus (required)Provides support for the parallel port bus.device lpt # PrinterSupport for parallel port printers.All three of the above are required to enable parallel printer
support.device plip # TCP/IP over parallelThis is the driver for the parallel network interface.device ppi # Parallel port interface deviceThe general-purpose I/O (geek port) + IEEE1284
I/O.#device vpo # Requires scbus and dazip driveThis is for an Iomega Zip drive. It requires
scbus and da support. Best
performance is achieved with ports in EPP 1.9 mode.# PCI Ethernet NICs.
device de # DEC/Intel DC21x4x (Tulip)
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device tx # SMC 9432TX (83c170 EPIC)
device vx # 3Com 3c590, 3c595 (Vortex)
device wx # Intel Gigabit Ethernet Card (Wiseman)Various PCI network card drivers. Comment out or remove any of
these not present in your system.# PCI Ethernet NICs that use the common MII bus controller code.
device miibus # MII bus supportMII bus support is required for some PCI 10/100 Ethernet NICs,
namely those which use MII-compliant transceivers or implement
transceiver control interfaces that operate like an MII. Adding
device miibus to the kernel config pulls in
support for the generic miibus API and all of the PHY drivers,
including a generic one for PHYs that are not specifically handled
by an individual driver.device dc # DEC/Intel 21143 and various workalikes
device rl # RealTek 8129/8139
device sf # Adaptec AIC-6915 (Starfire)
device sis # Silicon Integrated Systems SiS 900/SiS 7016
device ste # Sundance ST201 (D-Link DFE-550TX)
device tl # Texas Instruments ThunderLAN
device vr # VIA Rhine, Rhine II
device wb # Winbond W89C840F
device xl # 3Com 3c90x (Boomerang, Cyclone)Drivers that use the MII bus controller code.# ISA Ethernet NICs.
device ed0 at isa? port 0x280 irq 10 iomem 0xd8000
device ex
device ep
# WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really
# exists only as a PCMCIA device, so there is no ISA attachment needed
# and resources will always be dynamically assigned by the pccard code.
device wi
# Aironet 4500/4800 802.11 wireless NICs. Note: the declaration below will
# work for PCMCIA and PCI cards, as well as ISA cards set to ISA PnP
# mode (the factory default). If you set the switches on your ISA
# card for a manually chosen I/O address and IRQ, you must specify
# those parameters here.
device an
# The probe order of these is presently determined by i386/isa/isa_compat.c.
device ie0 at isa? port 0x300 irq 10 iomem 0xd0000
device fe0 at isa? port 0x300
device le0 at isa? port 0x300 irq 5 iomem 0xd0000
device lnc0 at isa? port 0x280 irq 10 drq 0
device cs0 at isa? port 0x300
device sn0 at isa? port 0x300 irq 10
# requires PCCARD (PCMCIA) support to be activated
#device xe0 at isa?ISA Ethernet drivers. See
/usr/src/sys/i386/conf/LINT for which cards are
supported by which driver.pseudo-device ether # Ethernet supportether is only needed if you have an Ethernet
card. It includes generic Ethernet protocol code.pseudo-device sl 1 # Kernel SLIPsl is for SLIP support. This has been almost
entirely supplanted by PPP, which is easier to set up, better suited
for modem-to-modem connection, and more powerful. The
number after sl
specifies how many simultaneous SLIP sessions to support.pseudo-device ppp 1 # Kernel PPPThis is for kernel PPP support for dial-up connections. There
is also a version of PPP implemented as a userland application that
uses tun and offers more flexibility and features
such as demand dialing. The number after
ppp specifies how many simultaneous PPP
connections to support.pseudo-device tun # Packet tunnel.This is used by the userland PPP software. A
number after tun
specifies the number of simultaneous PPP sessions to support. See
the PPP section of this book for more
information.
pseudo-device pty # Pseudo-ttys (telnet etc)This is a pseudo-terminal or simulated login port.
It is used by incoming telnet and
rlogin sessions,
xterm, and some other applications such
as Emacs. A
number after pty indicates the number of
ptys to create. If you need more than the
default of 16 simultaneous xterm windows
and/or remote logins, be sure to increase this number accordingly,
up to a maximum of 256.pseudo-device md # Memory disksMemory disk pseudo-devices.pseudo-device giforpseudo-device gif 4 # IPv6 and IPv4 tunnelingThis implements IPv6 over IPv4 tunneling, IPv4 over IPv6 tunneling,
IPv4 over IPv4 tunneling, and IPv6 over IPv6 tunneling. Beginning with
&os; 4.4 the gif device is
auto-cloning, and you should use the first example
(without the number after gif). Earlier versions of
&os; require the number.pseudo-device faith 1 # IPv6-to-IPv4 relaying (translation)This pseudo-device captures packets that are sent to it and
diverts them to the IPv4/IPv6 translation daemon.# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device bpf # Berkeley packet filterThis is the Berkeley Packet Filter. This pseudo-device allows
network interfaces to be placed in promiscuous mode, capturing every
packet on a broadcast network (e.g., an Ethernet). These packets
can be captured to disk and or examined with the &man.tcpdump.1;
program.The bpf pseudo-device is also used by
&man.dhclient.8; to obtain the IP address of the default router
(gateway) and so on. If you use DHCP, leave this
uncommented.# USB support
#device uhci # UHCI PCI->USB interface
#device ohci # OHCI PCI->USB interface
#device usb # USB Bus (required)
#device ugen # Generic
#device uhid # Human Interface Devices
#device ukbd # Keyboard
#device ulpt # Printer
#device umass # Disks/Mass storage - Requires scbus and da
#device ums # Mouse
# USB Ethernet, requires mii
#device aue # ADMtek USB ethernet
#device cue # CATC USB ethernet
#device kue # Kawasaki LSI USB ethernetSupport for various USB devices.For more information and additional devices supported by
&os;, see
/usr/src/sys/i386/conf/LINT.Making Device Nodesdevice nodesMAKEDEVIf you are running &os; 5.0 or later
you can safely skip this section. These versions use
&man.devfs.5; to allocate device nodes transparently for the user.Almost every device in the kernel has a corresponding
node entry in the /dev directory.
These nodes look like regular files, but are actually special
entries into the kernel which programs use to access the device.
The shell script /dev/MAKEDEV, which is
executed when you first install the operating system, creates
nearly all of the device nodes supported. However, it does not
create all of them, so when you add support for
a new device, it pays to make sure that the appropriate entries are
in this directory, and if not, add them. Here is a simple
example:Suppose you add the IDE CD-ROM support to the kernel. The line
to add is:device acd0This means that you should look for some entries that start with
acd0 in the /dev
directory, possibly followed by a letter, such as
c, or preceded by the letter
r, which means a raw device. It
turns out that those files are not there, so you must change to the
/dev directory and type:MAKEDEV&prompt.root; sh MAKEDEV acd0When this script finishes, you will find that there are now
acd0c and racd0c entries
in /dev so you know that it executed
correctly.For sound cards, the following command creates the appropriate
entries:&prompt.root; sh MAKEDEV snd0When creating device nodes for devices such as sound cards, if
other people have access to your machine, it may be desirable to
protect the devices from outside access by adding them to the
/etc/fbtab file. See &man.fbtab.5; for more
information.Follow this simple procedure for any other
non-GENERIC devices which do not have
entries.All SCSI controllers use the same set of
/dev entries, so you do not need to create
these. Also, network cards and SLIP/PPP pseudo-devices do not
have entries in /dev at all, so you do not
have to worry about these either.If Something Goes WrongThere are five categories of trouble that can occur when
building a custom kernel. They are:config fails:If the &man.config.8; command fails when you
give it your kernel description, you have probably made a
simple error somewhere. Fortunately,
&man.config.8; will print the line number that it
had trouble with, so you can quickly skip to it with
vi. For example, if you see:config: line 17: syntax errorYou can skip to the problem in vi by
typing 17G in command mode. Make sure the
keyword is typed correctly, by comparing it to the
GENERIC kernel or another
reference.make fails:If the make command fails, it usually
signals an error in your kernel description, but not severe
enough for &man.config.8; to catch it. Again, look
over your configuration, and if you still cannot resolve the
problem, send mail to the &a.questions; with your kernel
configuration, and it should be diagnosed very quickly.Installing the new kernel fails:If the kernel compiled fine, but failed to install
(the make install or
make installkernel command failed),
the first thing to check is if your system is running at
securelevel 1 or higher (see &man.init.8;). The kernel
installation tries to remove the immutable flag from
your kernel and set the immutable flag on the new one.
Since securelevel 1 or higher prevents unsetting the immutable
flag for any files on the system, the kernel installation needs
to be performed at securelevel 0 or lower.The kernel does not boot:If your new kernel does not boot, or fails to
recognize your devices, do not panic! Fortunately, &os; has
an excellent mechanism for recovering from incompatible
kernels. Simply choose the kernel you want to boot from at
the &os; boot loader. You can access this when the system
counts down from 10. Hit any key except for the
Enter key, type unload
and then type
boot kernel.old,
or the filename of any other kernel that will boot properly.
When reconfiguring a kernel, it is always a good idea to keep
a kernel that is known to work on hand.After booting with a good kernel you can check over your
configuration file and try to build it again. One helpful
resource is the /var/log/messages file
which records, among other things, all of the kernel messages
from every successful boot. Also, the &man.dmesg.8; command
will print the kernel messages from the current boot.If you are having trouble building a kernel, make sure
to keep a GENERIC, or some other kernel
that is known to work on hand as a different name that will
not get erased on the next build. You cannot rely on
kernel.old because when installing a
new kernel, kernel.old is overwritten
with the last installed kernel which may be non-functional.
Also, as soon as possible, move the working kernel to the
proper kernel location or commands such
as &man.ps.1; will not work properly. The proper command to
unlock the kernel file that
make installs (in order to move another
kernel back permanently) is:&prompt.root; chflags noschg /kernelIf you find you cannot do this, you are probably running
at a &man.securelevel.8; greater than zero. Edit
kern_securelevel in
/etc/rc.conf and set it to
-1, then reboot. You can change it back
to its previous setting when you are happy with your new
kernel.And, if you want to lock your new kernel
into place, or any file for that matter, so that it cannot
be moved or tampered with:&prompt.root; chflags schg /kernelIn &os; 5.0, kernels are not installed with the
system immutable flag, so this is unlikely to be the source
of the problem you're experiencing.The kernel works, but &man.ps.1; does not work
any more:If you have installed a different version of the kernel
from the one that the system utilities have been built with,
for example, a 4.X kernel on a 3.X system, many system-status
commands like &man.ps.1; and &man.vmstat.8; will not work any
more. You must recompile the libkvm
library as well as these utilities. This is one reason it is
not normally a good idea to use a different version of the
kernel from the rest of the operating system.
diff --git a/en_US.ISO8859-1/books/handbook/l10n/chapter.sgml b/en_US.ISO8859-1/books/handbook/l10n/chapter.sgml
index 8c9d9d8d62..77a1eaa51e 100644
--- a/en_US.ISO8859-1/books/handbook/l10n/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/l10n/chapter.sgml
@@ -1,973 +1,973 @@
Andrey A.ChernovContributed by Michael C.WuRewritten by Localization - I18N/L10N Usage and SetupSynopsisFreeBSD is a very distributed project with users and
contributors located all over the world. This chapter discusses
the internationalization and localization features of FreeBSD
that allow non-English speaking users to get real work done.
There are many aspects of the i18n implementation in both the system
and application levels, so where applicable we refer the reader
to more specific sources of documentation.After reading this chapter, you will know:How different languages and locales are encoded
on modern operating systems.How to set the locale for your login
shell.How to configure your console for non-English
languages.How to use X Windows effectively with different
languages.Where to find more information about writing
i18n-compliant applications.Before reading this chapter, you should:Know how to install additional third-party
applications ().The Basics
- What is I18N/L10N?
+ What Is I18N/L10N?internationalizationlocalizationDevelopers shortened internationalization into the term I18N,
counting the number of letters between the first and the last
letters of internationalization. L10N uses the same naming
scheme, coming from localization. Combined
together, I18N/L10N methods, protocols, and applications allow
users to use languages of their choice.I18N applications are programmed using I18N kits under
libraries. It allows for developers to write a simple file and
translate displayed menus and texts to each language. We strongly
encourage programmers to follow this convention.Why Should I Use I18N/L10N?I18N/L10N is used whenever you wish to either view, input, or
process data in non-English languages.What Languages Are Supported in the I18N Effort?I18N and L10N are not FreeBSD specific. Currently, one can
choose from most of the major languages of the World, including
but not limited to: Chinese, German, Japanese, Korean, French,
Russian, Vietnamese and others.Using LocalizationIn all its splendor, I18N is not FreeBSD-specific and is a
convention. We encourage you to help FreeBSD in following this
convention.localeLocalization settings are based on three main terms:
Language Code, Country Code, and Encoding. Locale names are
constructed from these parts as follows:LanguageCode_CountryCode.EncodingLanguage and Country Codeslanguage codescountry codesIn order to localize a FreeBSD system to a specific language
(or any other I18N-supporting Unixes), the user needs to find out
the codes for the specify country and language (country
codes tell applications what variation of given
language to use). In addition, web
browsers, SMTP/POP servers, web servers, etc. make decisions based on
them. The following are examples of language/country codes:Language/Country CodeDescriptionen_USEnglish - United Statesru_RURussian for Russiazh_TWTraditional Chinese for TaiwanEncodingsencodingsASCIISome languages use non-ASCII encodings that are 8-bit, wide
or multibyte characters, see &man.multibyte.3; for more
details. Older applications do not recognize them
and mistake them for control characters. Newer applications
usually do recognize 8-bit characters. Depending on the
implementation, users may be required to compile an application
with wide or multibyte characters support, or configure it correctly.
To be able to input and process wide or multibyte characters, the FreeBSD Ports collection has provided
each language with different programs. Refer to the I18N
documentation in the respective FreeBSD Port.Specifically, the user needs to look at the application
documentation to decide on how to configure it correctly or to
pass correct values into the configure/Makefile/compiler.Some things to keep in mind are:Language specific single C chars character sets
(see &man.multibyte.3;), i.e.,
ISO-8859-1, ISO-8859-15, KOI8-R, CP437.Wide or multibyte encodings, i.e. EUC, Big5.You can check the active list of character sets at the
IANA Registry.FreeBSD versions 4.5 and up use X11-compatible locale
encodings instead.I18N ApplicationsIn the FreeBSD Ports and Package system, I18N applications
have been named with I18N in their names for
easy identification. However, they do not always support the
language needed.Setting LocaleUsually it is sufficient to export the value of the locale name
as LANG in the login shell. This could be done in
the user's ~/.login_conf file or in the
startup file of the user's shell (~/.profile,
~/.bashrc, ~/.cshrc).
There is no need to set the locale subsets such as
LC_CTYPE, LC_CTIME. Please
refer to language-specific FreeBSD documentation for more
information.You should set the following two environment variables in your configuration
files:POSIXLANG for POSIX &man.setlocale.3; family
functionsMIMEMM_CHARSET for applications' MIME character
setThis includes the user shell configuration, the specific application
configuration, and the X11 configuration.Setting Locale Methodslocalelogin classThere are two methods for setting locale, and both are
described below. The first (recommended one) is by assigning
the environment variables in login
class, and the second is by adding the environment
variable assignments to the system's shell startup file.Login Classes MethodThis method allows environment variables needed for locale
name and MIME character sets to be assigned once for every
possible shell instead of adding specific shell assignments to
each shell's startup file. User
Level Setup can be done by an user himself and Administrator Level Setup require
superuser privileges.User Level SetupHere is a minimal example of a
.login_conf file in user's home
directory which has both variables set for Latin-1
encoding:me:\
:charset=ISO-8859-1:\
:lang=de_DE.ISO8859-1:Traditional ChineseBIG-5 encodingHere is an example of a
.login_conf that sets the variables
for Traditional Chinese in BIG-5 encoding. Notice the many
more variables set because some software does not respect
locale variables correctly for Chinese, Japanese, and Korean.#Users who do not wish to use monetary units or time formats
#of Taiwan can manually change each variable
me:\
lang=zh_TW.Big5:\
lc_all=zh_TW.Big:\
lc_collate=zh_TW.Big5:\
lc_ctype=zh_TW.Big5:\
lc_messages=zh_TW.Big5:\
lc_monetary=zh_TW.Big5:\
lc_numeric=zh_TW.Big5:\
lc_time=zh_TW.Big5:\
charset=big5:\
xmodifiers="@im=xcin": #Setting the XIM Input ServerSee Administrator Level
Setup and &man.login.conf.5; for more details.Administrator Level SetupVerify that the user's login class in
/etc/login.conf sets the correct
language. Make sure these settings
appear in /etc/login.conf:language_name:accounts_title:\
:charset=MIME_charset:\
:lang=locale_name:\
:tc=default:So sticking with our previous example using Latin-1, it
would look like this:german:German Users Accounts:\
:charset=ISO-8859-1:\
:lang=de_DE.ISO8859-1:\
:tc=default:Changing Login Classes with &man.vipw.8;vipwUse vipw to add new users, and make
the entry look like this:user:password:1111:11:language:0:0:User Name:/home/user:/bin/shChanging Login Classes with &man.adduser.8;adduserlogin classUse adduser to add new users, and do
the following:Set defaultclass =
language in
/etc/adduser.conf. Keep in mind
you must enter a default class for
all users of other languages in this case.An alternative variant is answering the specified
language each time that
Enter login class: default []:
appears from &man.adduser.8;.Another alternative is to use the following for each
user of a different language that you wish to
add:&prompt.root; adduser -class languageChanging Login Classes with &man.pw.8;pwIf you use &man.pw.8; for adding new users, call it in
this form:&prompt.root; pw useradd user_name -L languageShell Startup File MethodThis method is not recommended because it requires a
different setup for each possible shell program chosen. Use
the Login Class Method
instead.MIMElocaleTo add the locale name and MIME character set, just set
the two environment variables shown below in the
/etc/profile and/or
/etc/csh.login shell startup files. We
will use the German language as an example below:In /etc/profile:LANG=de_DE.ISO8859-1; export LANGMM_CHARSET=ISO-8859-1; export MM_CHARSETOr in /etc/csh.login:setenv LANG de_DE.ISO8859-1setenv MM_CHARSET ISO-8859-1Alternatively, you can add the above instructions to
/usr/share/skel/dot.profile (similar to
what was used in /etc/profile above), or
/usr/share/skel/dot.login (similar to
what was used in /etc/csh.login
above).For X11:In $HOME/.xinitrc:LANG=de_DE.ISO8859-1; export LANGOr:setenv LANG de_DE.ISO8859-1Depending on your shell (see above).Console SetupFor all single C chars character sets, set the correct
console fonts in /etc/rc.conf for the
language in question with:font8x16=font_name
font8x14=font_name
font8x8=font_nameThe font_name here is taken from
the /usr/share/syscons/fonts directory,
without the .fnt suffix.sysinstallkeymapscreenmapAlso be sure to set the correct keymap and screenmap for your
single C chars character set through
/stand/sysinstall.
Once inside sysinstall, choose Configure, then
Console. Alternatively, you can add the
following to /etc/rc.conf:scrnmap=screenmap_name
keymap=keymap_name
keychange="fkey_number sequence"The screenmap_name here is taken
from the /usr/share/syscons/scrnmaps
directory, without the .scm suffix. A
screenmap with a corresponding mapped font is usually needed as a
workaround for expanding bit 8 to bit 9 on a VGA adapter's font
character matrix in pseudographics area, i.e., to move letters out
of that area if screen font uses a bit 8 column.If you have the moused daemon
enabled by setting the following
in your /etc/rc.conf:moused_enable="YES"then examine the mouse cursor information in the next
paragraph.mousedBy default the mouse cursor of the &man.syscons.4; driver occupies the
0xd0-0xd3 range in the character set. If your language uses this
range, you need to move the cursor's range outside of it. To enable
the workaround for FreeBSD versions before 5.0, insert the following
line into your kernel configuration:options SC_MOUSE_CHAR=0x03For the FreeBSD versions 4.4 and up insert the following line
into /etc/rc.conf:mousechar_start=3The keymap_name here is taken from
the /usr/share/syscons/keymaps directory,
without the .kbd suffix. If you're
uncertain which keymap to use, you use can &man.kbdmap.1; to test
keymaps without rebooting.The keychange is usually needed to program
function keys to match the selected terminal type because
function key sequences cannot be defined in the key map.Also be sure to set the correct console terminal type in
/etc/ttys for all ttyv*
entries. Current pre-defined correspondences are:Character SetTerminal TypeISO-8859-1 or ISO-8859-15cons25l1ISO-8859-2cons25l2ISO-8859-7cons25l7KOI8-Rcons25rKOI8-Ucons25uCP437 (VGA default)cons25US-ASCIIcons25wFor wide or multibyte characters languages, use the correct
FreeBSD port in your
/usr/ports/language
directory. Some ports appear as console while the system sees it
as serial vtty's, hence you must reserve enough vtty's for both
X11 and the pseudo-serial console. Here is a partial list of
applications for using other languages in console:LanguageLocationTraditional Chinese (BIG-5)chinese/big5conJapanesejapanese/ja-kon2-* or
japanese/Mule_WnnKoreankorean/ko-hanX11 SetupAlthough X11 is not part of the FreeBSD Project, we have
included some information here for FreeBSD users. For more
details, refer to the XFree86
web site or whichever X11 Server you use.In ~/.Xresources, you can additionally
tune application specific I18N settings (e.g., fonts, menus,
etc.).Displaying FontsX11 True Type font serverInstall the X11 True Type-Common server (x11-servers/XttXF86srv-common) and
install the language truetype fonts. Setting the correct
locale should allow you to view your selected language in menus
and such.Inputting Non-English CharactersX11 Input Method (XIM)The X11 Input Method (XIM) Protocol is a new standard for
all X11 clients. All X11 applications should be written as XIM
clients that take input from XIM Input servers. There are
several XIM servers available for different languages.Printer SetupSome single C chars character sets are usually hardware
coded into printers. Wide or multibyte
character sets require special setup and we recommend using
apsfilter. You may also convert the
document to PostScript or PDF formats using language specific
converters.Kernel and File SystemsThe FreeBSD fast filesystem (FFS) is 8-bit clean, so it can be used
with any single C chars character set (see &man.multibyte.3;),
but there is no character set
name stored in the filesystem; i.e., it is raw 8-bit and does not
know anything about encoding order. Officially, FFS does not
support any form of wide or multibyte character sets yet. However, some
wide or multibyte character sets have independent patches for FFS
enabling such support. They are only temporary unportable
solutions or hacks and we have decided to not include them in the
source tree. Refer to respective languages' web sites for more
informations and the patch files.DOSUnicodeThe FreeBSD MS-DOS filesystem has the configurable ability to
convert between MS-DOS, Unicode character sets and chosen
FreeBSD filesystem character sets. See &man.mount.msdos.8; for
details.Compiling I18N ProgramsMany FreeBSD Ports have been ported with I18N support. Some
of them are marked with -I18N in the port name. These and many
other programs have built in support for I18N and need no special
consideration.MySQLHowever, some applications such as
MySQL need to be have the
Makefile configured with the specific
charset. This is usually done in the
Makefile or done by passing a value to
configure in the source.Localizing FreeBSD to Specific LanguagesAndrey A.ChernovOriginally contributed by
- Russian Language (KOI8-R encoding)
+ Russian Language (KOI8-R Encoding)localizationRussianFor more information about KOI8-R encoding, see the KOI8-R References
(Russian Net Character Set).Locale SetupPut the following lines into your
~/.login_conf file:me:My Account:\
:charset=KOI8-R:\
:lang=ru_RU.KOI8-R:See earlier in this chapter for examples of setting up the
locale.Console SetupFor the FreeBSD versions before 5.0 add the following line
to your kernel configuration file:options SC_MOUSE_CHAR=0x03For the FreeBSD versions 4.4 and up insert the following
line into /etc/rc.conf:mousechar_start=3Use following settings in
/etc/rc.conf:keymap="ru.koi8-r"
scrnmap="koi8-r2cp866"
font8x16="cp866b-8x16"
font8x14="cp866-8x14"
font8x8="cp866-8x8"For each ttyv* entry in
/etc/ttys, use
cons25r as the terminal type.See earlier in this chapter for examples of setting up the
console.Printer SetupprintersSince most printers with Russian characters come with
hardware code page CP866, a special output filter is needed
to convert from KOI8-R to CP866. Such a filter is installed by
default as /usr/libexec/lpr/ru/koi2alt.
A Russian printer /etc/printcap entry
should look like:lp|Russian local line printer:\
:sh:of=/usr/libexec/lpr/ru/koi2alt:\
:lp=/dev/lpt0:sd=/var/spool/output/lpd:lf=/var/log/lpd-errs:See &man.printcap.5; for a detailed description.MS-DOS FS and Russian FilenamesThe following example &man.fstab.5; entry enables support
for Russian filenames in mounted MS-DOS filesystems:/dev/ad0s2 /dos/c msdos rw,-Wkoi2dos,-Lru_RU.KOI8-R 0 0See &man.mount.msdos.8; for a detailed description of the
and options.X11 SetupDo non-X locale
setup first as described.The Russian KOI8-R locale
may not work with old XFree86 releases (lower than 3.3).
XFree86 4.X is now the default
version of the X Window System on FreeBSD.
This should not be an
issue unless you are using an old version of
FreeBSD.Go to the
russian/X.language directory
and issue the following command:&prompt.root; make installThe above port installs the latest version of the KOI8-R
fonts. XFree86 3.3 already has some KOI8-R fonts, but these
are scaled better.Check the "Files" section
in your /etc/XF86Config file.
The following
lines must be added before any other
FontPath entries:FontPath "/usr/X11R6/lib/X11/fonts/cyrillic/misc"
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic/75dpi"
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic/100dpi"If you use a high resolution video mode, swap the 75 dpi
and 100 dpi lines.To activate a Russian keyboard, add the following to the
"Keyboard" section of your
XF86Config file.For XFree86 3.X:XkbLayout "ru"
XkbOptions "grp:caps_toggle"For XFree86 4.X:Option "XkbLayout" "ru"
Option "XkbOptions" "grp:caps_toggle"Also make sure that XkbDisable is
turned off (commented out) there.The RUS/LAT switch will be CapsLock.
The old CapsLock function is still
available via ShiftCapsLock (in LAT mode
only).If you have Windows keys on your keyboard,
and notice that some non-alphabetical keys are mapped
incorrectly in RUS mode, add the following line in your
XF86Config file.For XFree86 3.X:XkbVariant "winkeys"For XFree86 4.X:Option "XkbVariant" "winkeys"The Russian XKB keyboard may not work with old XFree86
versions, see the above
note for more information. The Russian XKB
keyboard may also not work with non-localized
applications as well. Minimally localized applications
should call a XtSetLanguageProc (NULL, NULL,
NULL); function early in the program.
See
KOI8-R for X Window for more instructions on
localizing X11 applications.Traditional Chinese Localization for TaiwanlocalizationTraditional ChineseThe FreeBSD-Taiwan Project has an I18N/L10N tutorial for
FreeBSD at
using many Chinese ports.
The editor for the zh-L10N-tut is Clive Lin
Clive@CirX.org. You can also cvsup the following
collections at freebsd.sinica.edu.tw:CollectionDescriptionoutta-port tag=.Beta-quality ports collection for Chinesezh-L10N-tut tag=.Localizing FreeBSD Tutorial in BIG-5 Traditional
Chinesezh-doc tag=.FreeBSD Documentation Translation to BIG-5 Traditional
ChineseChuan-Hsing Shen s874070@mail.yzu.edu.tw has
created the Chinese
FreeBSD Collection (CFC) using FreeBSD-Taiwan's
zh-L10N-tut. The packages and the script files
are available at .
- German Language Localization (For All ISO 8859-1
+ German Language Localization (for All ISO 8859-1
Languages)localizationGermanSlaven Rezic eserte@cs.tu-berlin.de wrote a
tutorial how to use umlauts on a FreeBSD machine. The tutorial
is written in German and available at
.Japanese and Korean Language LocalizationlocalizationJapaneselocalizationKoreanFor Japanese, refer to
,
and for Korean, refer to
.Non-English FreeBSD DocumentationSome FreeBSD contributors have translated parts of FreeBSD to
other languages. They are available through links on the main site or in
/usr/share/doc.
diff --git a/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml b/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml
index 3b5099a70d..680210b4df 100644
--- a/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/linuxemu/chapter.sgml
@@ -1,3097 +1,3097 @@
JimMockRestructured and parts updated by Brian N.HandyOriginally contributed by RichMurpheyLinux Binary CompatibilitySynopsisLinux binary compatibilitybinary compatibilityLinuxFreeBSD provides binary compatibility with several other
Unix-like operating systems, including Linux. At this point,
you may be asking yourself why exactly, does
FreeBSD need to be able to run Linux binaries? The answer to that
question is quite simple. Many companies and developers develop
only for Linux, since it is the latest hot thing in
the computing world. That leaves the rest of us FreeBSD users
bugging these same companies and developers to put out native
FreeBSD versions of their applications. The problem is, that most
of these companies do not really realize how many people would use
their product if there were FreeBSD versions too, and most continue
to only develop for Linux. So what is a FreeBSD user to do? This
is where the Linux binary compatibility of FreeBSD comes into
play.In a nutshell, the compatibility allows FreeBSD users to run
about 90% of all Linux applications without modification. This
includes applications such as Star Office,
the Linux version of Netscape,
Adobe Acrobat,
RealPlayer
5 and 7, VMWare,
Oracle,
WordPerfect, Doom,
Quake, and more. It is also reported
that in some situations, Linux binaries perform better on FreeBSD
than they do under Linux.Linux/proc file systemThere are, however, some Linux-specific operating system
features that are not supported under FreeBSD. Linux binaries will
not work on FreeBSD if they overly use the Linux
/proc file system (which is different from
FreeBSD's /proc file system), or i386-specific
calls, such as enabling virtual 8086 mode.After reading this chapter, you will know:How to enable Linux binary compatibility on your system.How to install additional Linux shared
libraries.How to install Linux applications on your FreeBSD system.The implementation details of Linux compatibility in FreeBSD.Before reading this chapter, you should:Know how to install additional third-party
software ().InstallationKLD (kernel loadable object)Linux binary compatibility is not turned on by default. The
easiest way to enable this functionality is to load the
linux KLD object (Kernel LoaDable
object). You can load this module by simply typing
linux at the command prompt.If you would like Linux compatibility to always be enabled,
then you should add the following line to
/etc/rc.conf:linux_enable="YES"The &man.kldstat.8; command can be used to verify that the
KLD is loaded:&prompt.user; kldstat
Id Refs Address Size Name
1 2 0xc0100000 16bdb8 kernel
7 1 0xc24db000 d000 linux.kokernel optionsLINUXIf for some reason you do not want to or cannot load the KLD,
then you may statically link Linux binary compatibility into the kernel
by adding options LINUX to your kernel
configuration file. Then install your new kernel as described in
.Installing Linux Runtime LibrariesLinuxinstalling Linux librariesThis can be done one of two ways, either by using the
linux_base port, or
by installing them manually.Installing Using the linux_base Portports collectionThis is by far the easiest method to use when installing the
runtime libraries. It is just like installing any other port
from the ports collection.
Simply do the following:&prompt.root; cd /usr/ports/emulators/linux_base
&prompt.root; make install distcleanYou should now have working Linux binary compatibility.
Some programs may complain about incorrect minor versions of the
system libraries. In general, however, this does not seem to be
a problem.Installing Libraries ManuallyIf you do not have the ports collection
installed, you can install the libraries by hand instead. You
will need the Linux shared libraries that the program depends on
and the runtime linker. Also, you will need to create a
shadow root directory,
/compat/linux, for Linux libraries on your
FreeBSD system. Any shared libraries opened by Linux programs
run under FreeBSD will look in this tree first. So, if a Linux
program loads, for example, /lib/libc.so,
FreeBSD will first try to open
/compat/linux/lib/libc.so, and if that does
not exist, it will then try /lib/libc.so.
Shared libraries should be installed in the shadow tree
/compat/linux/lib rather than the paths
that the Linux ld.so reports.Generally, you will need to look for the shared libraries
that Linux binaries depend on only the first few times that you
install a Linux program on your FreeBSD system. After a while,
you will have a sufficient set of Linux shared libraries on your
system to be able to run newly imported Linux binaries without
any extra work.How to Install Additional Shared Librariesshared librariesWhat if you install the linux_base port
and your application still complains about missing shared
libraries? How do you know which shared libraries Linux
binaries need, and where to get them? Basically, there are 2
possibilities (when following these instructions you will need
to be root on your FreeBSD system).If you have access to a Linux system, see what shared
libraries the application needs, and copy them to your FreeBSD
system. Look at the following example:Let us assume you used FTP to get the Linux binary of
Doom, and put it on a Linux system you have access to. You
then can check which shared libraries it needs by running
ldd linuxdoom, like so:&prompt.user; ldd linuxdoom
libXt.so.3 (DLL Jump 3.1) => /usr/X11/lib/libXt.so.3.1.0
libX11.so.3 (DLL Jump 3.1) => /usr/X11/lib/libX11.so.3.1.0
libc.so.4 (DLL Jump 4.5pl26) => /lib/libc.so.4.6.29symbolic linksYou would need to get all the files from the last column,
and put them under /compat/linux, with
the names in the first column as symbolic links pointing to
them. This means you eventually have these files on your
FreeBSD system:/compat/linux/usr/X11/lib/libXt.so.3.1.0
/compat/linux/usr/X11/lib/libXt.so.3 -> libXt.so.3.1.0
/compat/linux/usr/X11/lib/libX11.so.3.1.0
/compat/linux/usr/X11/lib/libX11.so.3 -> libX11.so.3.1.0
/compat/linux/lib/libc.so.4.6.29 /compat/linux/lib/libc.so.4 -> libc.so.4.6.29
Note that if you already have a Linux shared library
with a matching major revision number to the first column
of the ldd output, you will not need to
copy the file named in the last column to your system, the
one you already have should work. It is advisable to copy
the shared library anyway if it is a newer version,
though. You can remove the old one, as long as you make
the symbolic link point to the new one. So, if you have
these libraries on your system:/compat/linux/lib/libc.so.4.6.27
/compat/linux/lib/libc.so.4 -> libc.so.4.6.27and you find a new binary that claims to require a
later version according to the output of
ldd:libc.so.4 (DLL Jump 4.5pl26) -> libc.so.4.6.29If it is only one or two versions out of date in the
in the trailing digit then do not worry about copying
/lib/libc.so.4.6.29 too, because the
program should work fine with the slightly older version.
However, if you like, you can decide to replace the
libc.so anyway, and that should leave
you with:/compat/linux/lib/libc.so.4.6.29
/compat/linux/lib/libc.so.4 -> libc.so.4.6.29
The symbolic link mechanism is
only needed for Linux binaries. The
FreeBSD runtime linker takes care of looking for matching
major revision numbers itself and you do not need to worry
about it.
Installing Linux ELF BinariesLinuxELF binariesELF binaries sometimes require an extra step of
branding. If you attempt to run an unbranded ELF
binary, you will get an error message like the following:&prompt.user; ./my-linux-elf-binary
ELF binary type not known
AbortTo help the FreeBSD kernel distinguish between a FreeBSD ELF
binary from a Linux binary, use the &man.brandelf.1;
utility.&prompt.user; brandelf -t Linux my-linux-elf-binaryGNU toolchainThe GNU toolchain now places the appropriate branding
information into ELF binaries automatically, so this step
should become increasingly more rare in the future.Configuring the Hostname ResolverIf DNS does not work or you get this message:resolv+: "bind" is an invalid keyword resolv+:
"hosts" is an invalid keywordYou will need to configure a
/compat/linux/etc/host.conf file
containing:order hosts, bind
multi onThe order here specifies that /etc/hosts
is searched first and DNS is searched second. When
/compat/linux/etc/host.conf is not
installed, Linux applications find FreeBSD's
/etc/host.conf and complain about the
incompatible FreeBSD syntax. You should remove
bind if you have not configured a name server
using the /etc/resolv.conf file.MurrayStokelyUpdated for Mathematica 4.X by BojanBistrovicMerged with work by Installing MathematicaapplicationsMathematicaThis document describes the process of installing the Linux
version of Mathematica 4.X onto
a FreeBSD system.The Linux version of Mathematica
runs perfectly under FreeBSD
however the binaries shipped by Wolfram need to be branded so that
FreeBSD knows to use the Linux ABI to execute them.The Linux version of Mathematica
or Mathematica for Students can
be ordered directly from Wolfram at
.Branding the Linux BinariesThe Linux binaries are located in the Unix
directory of the Mathematica CDROM
distributed by Wolfram. You
need to copy this directory tree to your local hard drive so that
you can brand the Linux binaries with &man.brandelf.1; before
running the installer:&prompt.root; mount /cdrom
&prompt.root; cp -rp /cdrom/Unix/ /localdir/
&prompt.root; brandelf -t Linux /localdir/Files/SystemFiles/Kernel/Binaries/Linux/*
&prompt.root; brandelf -t Linux /localdir/Files/SystemFiles/FrontEnd/Binaries/Linux/*
&prompt.root; brandelf -t Linux /localdir/Files/SystemFiles/Installation/Binaries/Linux/*
&prompt.root; brandelf -t Linux /localdir/Files/SystemFiles/Graphics/Binaries/Linux/*
&prompt.root; brandelf -t Linux /localdir/Files/SystemFiles/Converters/Binaries/Linux/*
&prompt.root; brandelf -t Linux /localdir/Files/SystemFiles/LicenseManager/Binaries/Linux/mathlm
&prompt.root; cd /localdir/Installers/Linux/
&prompt.root; ./MathInstallerAlternatively, you can simply set the default ELF brand
to Linux for all unbranded binaries with the command:&prompt.root; sysctl kern.fallback_elf_brand=3This will make FreeBSD assume that unbranded ELF binaries
use the Linux ABI and so you should be able to run the
installer straight from the CDROM.Obtaining Your Mathematica PasswordBefore you can run Mathematica
you will have to obtain a
password from Wolfram that corresponds to your machine
ID.EthernetMAC addressOnce you have installed the Linux compatibility runtime
libraries and unpacked Mathematica
you can obtain the
machine ID by running the program
mathinfo in the Install directory. This
machine ID is based solely on the MAC address of your first
Ethernet card.&prompt.root; cd /localdir/Files/SystemFiles/Installation/Binaries/Linux
&prompt.root; mathinfo
disco.example.com 7115-70839-20412When you register with Wolfram, either by email, phone or fax,
you will give them the machine ID and they will
respond with a corresponding password consisting of groups of
numbers. You can then enter this information when you attempt to
run Mathematica for the first time
exactly as you would for any other
Mathematica platform.Running the Mathematica Frontend over a NetworkMathematica uses some special
fonts to display characters not
present in any of the standard font sets (integrals, sums, Greek
letters, etc.). The X protocol requires these fonts to be install
locally. This means you will have to copy
these fonts from the CDROM or from a host with
Mathematica
installed to your local machine. These fonts are normally stored
in /cdrom/Unix/Files/SystemFiles/Fonts on the
CDROM, or
/usr/local/mathematica/SystemFiles/Fonts on
your hard drive. The actual fonts are in the subdirectories
Type1 and X. There are
several ways to use them, as described below.The first way is to copy them into one of the existing font
directories in /usr/X11R6/lib/X11/fonts.
This will require editing the fonts.dir file,
adding the font names to it, and changing the number of fonts on
the first line. Alternatively, you should also just be able to
run mkfontdir in the directory you have copied
them to.The second way to do this is to copy the directories to
/usr/X11R6/lib/X11/fonts:&prompt.root; cd /usr/X11R6/lib/X11/fonts
&prompt.root; mkdir X
&prompt.root; mkdir MathType1
&prompt.root; cd /cdrom/Unix/Files/SystemFiles/Fonts
&prompt.root; cp X/* /usr/X11R6/lib/X11/fonts/X
&prompt.root; cp Type1/* /usr/X11R6/lib/X11/fonts/MathType1
&prompt.root; cd /usr/X11R6/lib/X11/fonts/X
&prompt.root; mkfontdir
&prompt.root; cd ../MathType1
&prompt.root; mkfontdirNow add the new font directories to your font path:&prompt.root; xset fp+ /usr/X11R6/lib/X11/fonts/X
&prompt.root; xset fp+ /usr/X11R6/lib/X11/fonts/MathType1
&prompt.root; xset fp rehashIf you are using the XFree86 server, you can have these font
directories loaded automatically by adding them to your
XF86Config file.fontsIf you do not already have a directory
called /usr/X11R6/lib/X11/fonts/Type1, you
can change the name of the MathType1
directory in the example above to
Type1.AaronKaplanContributed by RobertGetschmannThanks to Installing MapleapplicationsMapleMaple is a commercial mathematics program similar to
Mathematica. You must purchase this software from and then register there
for a license file. To install this software on FreeBSD, please
follow these simple steps.Execute the INSTALL shell
script from the product distribution. Choose the
RedHat option when prompted by the
installation program. A typical installation directory
might be /usr/local/maple.If you have not done so, order a license for Maple
from Maple Waterloo Software (http://register.maplesoft.com)
and copy it to
/usr/local/maple/license/license.dat.Install the FLEXlm
license manager by running the
INSTALL_LIC install shell script that
comes with Maple. Specify the
primary hostname for your machine for the license
server.Patch the
usr/local/maple/bin/maple.system.type
file with the following: ----- snip ------------------
*** maple.system.type.orig Sun Jul 8 16:35:33 2001
--- maple.system.type Sun Jul 8 16:35:51 2001
***************
*** 72,77 ****
--- 72,78 ----
# the IBM RS/6000 AIX case
MAPLE_BIN="bin.IBM_RISC_UNIX"
;;
+ "FreeBSD"|\
"Linux")
# the Linux/x86 case
# We have two Linux implementations, one for Red Hat and
----- snip end of patch -----Please note that after the "FreeBSD"|\ no other
whitespace should be present.This patch instructs Maple to
recognize FreeBSD as a type of Linux system.
The bin/maple shell script calls the
bin/maple.system.type shell script
which in turn calls uname -a to find out the operating
system name. Depending on the OS name it will find out which
binaries to use.Start the license server.The following script, installed as
/usr/local/etc/rc.d/lmgrd.sh is a
convenient way to start up lmgrd: ----- snip ------------
#! /bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin
PATH=${PATH}:/usr/local/maple/bin:/usr/local/maple/FLEXlm/UNIX/LINUX
export PATH
LICENSE_FILE=/usr/local/maple/license/license.dat
LOG=/var/log/lmgrd.log
case "$1" in
start)
lmgrd -c ${LICENSE_FILE} 2>> ${LOG} 1>&2
echo -n " lmgrd"
;;
stop)
lmgrd -c ${LICENSE_FILE} -x lmdown 2>> ${LOG} 1>&2
;;
*)
echo "Usage: `basename $0` {start|stop}" 1>&2
exit 64
;;
esac
exit 0
----- snip ------------Test-start maple:&prompt.user; cd /usr/local/maple/bin
&prompt.user; ./xmapleYou should be up and running. Make sure to write
Maplesoft to let them know you would like a native FreeBSD
version!Common PitfallsThe FLEXlm license manager can be a difficult
tool to work with. Additional documentation on the subject
can be found at .lmgrd is known to be very picky
about the license file and to core dump if there are any
problems. A correct license file should look like this:# =======================================================
# License File for UNIX Installations ("Pointer File")
# =======================================================
SERVER chillig ANY
#USE_SERVER
VENDOR maplelmg
FEATURE Maple maplelmg 2000.0831 permanent 1 XXXXXXXXXXXX \
PLATFORMS=i86_r ISSUER="Waterloo Maple Inc." \
ISSUED=11-may-2000 NOTICE=" Technische Universitat Wien" \
SN=XXXXXXXXXSerial number and key 'X''ed out. chillig is a
hostname.Editing the license file works as long as you do not
touch the FEATURE line (which is protected by the
license key).MarcelMoolenaarContributed by Installing OracleapplicationsOraclePrefaceThis document describes the process of installing Oracle 8.0.5 and
Oracle 8.0.5.1 Enterprise Edition for Linux onto a FreeBSD
machine.Installing the Linux EnvironmentMake sure you have both linux_base and
linux_devtools from the ports collection
installed. These ports are added to the collection after the release
of FreeBSD 3.2. If you are using FreeBSD 3.2 or an older version for
that matter, update your ports collection. You may want to consider
updating your FreeBSD version too. If you run into difficulties with
linux_base-6.1 or
linux_devtools-6.1 you may have to use version
5.2 of these packages.If you want to run the intelligent agent, you will
also need to install the Red Hat Tcl package:
tcl-8.0.3-20.i386.rpm. The general command
for installing packages with the official RPM port is:&prompt.root; rpm -i --ignoreos --root /compat/linux --dbpath /var/lib/rpm packageInstallation of the package should not generate any errors.Creating the Oracle EnvironmentBefore you can install Oracle, you need to set up a proper
environment. This document only describes what to do
specially to run Oracle for Linux on FreeBSD, not
what has been described in the Oracle installation guide.Kernel Tuningkernel tuningAs described in the Oracle installation guide, you need to set
the maximum size of shared memory. Do not use
SHMMAX under FreeBSD. SHMMAX
is merely calculated out of SHMMAXPGS and
PGSIZE. Therefore define
SHMMAXPGS. All other options can be used as
described in the guide. For example:options SHMMAXPGS=10000
options SHMMNI=100
options SHMSEG=10
options SEMMNS=200
options SEMMNI=70
options SEMMSL=61Set these options to suit your intended use of Oracle.Also, make sure you have the following options in your kernel
config-file:options SYSVSHM #SysV shared memory
options SYSVSEM #SysV semaphores
options SYSVMSG #SysV interprocess communicationOracle AccountCreate an Oracle account just as you would create any other
account. The Oracle account is special only that you need to give
it a Linux shell. Add /compat/linux/bin/bash to
/etc/shells and set the shell for the Oracle
account to /compat/linux/bin/bash.EnvironmentBesides the normal Oracle variables, such as
ORACLE_HOME and ORACLE_SID you must
set the following environment variables:VariableValueLD_LIBRARY_PATH$ORACLE_HOME/libCLASSPATH$ORACLE_HOME/jdbc/lib/classes111.zipPATH/compat/linux/bin
/compat/linux/sbin
/compat/linux/usr/bin
/compat/linux/usr/sbin
/bin
/sbin
/usr/bin
/usr/sbin
/usr/local/bin
$ORACLE_HOME/binIt is advised to set all the environment variables in
.profile. A complete example is:ORACLE_BASE=/oracle; export ORACLE_BASE
ORACLE_HOME=/oracle; export ORACLE_HOME
LD_LIBRARY_PATH=$ORACLE_HOME/lib
export LD_LIBRARY_PATH
ORACLE_SID=ORCL; export ORACLE_SID
ORACLE_TERM=386x; export ORACLE_TERM
CLASSPATH=$ORACLE_HOME/jdbc/lib/classes111.zip
export CLASSPATH
PATH=/compat/linux/bin:/compat/linux/sbin:/compat/linux/usr/bin
PATH=$PATH:/compat/linux/usr/sbin:/bin:/sbin:/usr/bin:/usr/sbin
PATH=$PATH:/usr/local/bin:$ORACLE_HOME/bin
export PATHInstalling OracleDue to a slight inconsistency in the Linux emulator, you need to
create a directory named .oracle in
/var/tmp before you start the installer. Either
make it world writable or let it be owner by the oracle user. You
should be able to install Oracle without any problems. If you have
problems, check your Oracle distribution and/or configuration first!
After you have installed Oracle, apply the patches described in the
next two subsections.A frequent problem is that the TCP protocol adapter is not
installed right. As a consequence, you cannot start any TCP listeners.
The following actions help solve this problem:&prompt.root; cd $ORACLE_HOME/network/lib
&prompt.root; make -f ins_network.mk ntcontab.o
&prompt.root; cd $ORACLE_HOME/lib
&prompt.root; ar r libnetwork.a ntcontab.o
&prompt.root; cd $ORACLE_HOME/network/lib
&prompt.root; make -f ins_network.mk installDo not forget to run root.sh again!Patching root.shWhen installing Oracle, some actions, which need to be performed
as root, are recorded in a shell script called
root.sh. root.sh is
written in the orainst directory. Apply the
following patch to root.sh, to have it use to proper location of
chown or alternatively run the script under a
Linux native shell.*** orainst/root.sh.orig Tue Oct 6 21:57:33 1998
--- orainst/root.sh Mon Dec 28 15:58:53 1998
***************
*** 31,37 ****
# This is the default value for CHOWN
# It will redefined later in this script for those ports
# which have it conditionally defined in ss_install.h
! CHOWN=/bin/chown
#
# Define variables to be used in this script
--- 31,37 ----
# This is the default value for CHOWN
# It will redefined later in this script for those ports
# which have it conditionally defined in ss_install.h
! CHOWN=/usr/sbin/chown
#
# Define variables to be used in this scriptWhen you do not install Oracle from CD, you can patch the source
for root.sh. It is called
rthd.sh and is located in the
orainst directory in the source tree.Patching genclntshThe script genclntsh is used to create
a single shared client
library. It is used when building the demos. Apply the following
patch to comment out the definition of PATH:*** bin/genclntsh.orig Wed Sep 30 07:37:19 1998
--- bin/genclntsh Tue Dec 22 15:36:49 1998
***************
*** 32,38 ****
#
# Explicit path to ensure that we're using the correct commands
#PATH=/usr/bin:/usr/ccs/bin export PATH
! PATH=/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin export PATH
#
# each product MUST provide a $PRODUCT/admin/shrept.lst
--- 32,38 ----
#
# Explicit path to ensure that we're using the correct commands
#PATH=/usr/bin:/usr/ccs/bin export PATH
! #PATH=/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin export PATH
#
# each product MUST provide a $PRODUCT/admin/shrept.lstRunning OracleWhen you have followed the instructions, you should be able to run
Oracle as if it was run on Linux
itself.HolgerKippContributed by ValentinoVaschettoOriginal version converted to SGML by Installing SAP R/3applicationsSAP R/3Installations of SAP Systems using FreeBSD will not be
supported by the SAP support team — they only offer support
for certified platforms.PrefaceThis document describes a possible way of installing a
SAP R/3-System
with Oracle Database
for Linux onto a FreeBSD machine, including the installation
of FreeBSD and Oracle. Two different
configurations will be described:SAP R/3 4.6B (IDES) with
Oracle 8.0.5 on FreeBSD 4.3-STABLESAP R/3 4.6C with
Oracle 8.1.7 on FreeBSD 4.5-STABLEEven though this document tries to describe all important
steps in a greater detail, it is not intended as a replacement
for the Oracle and
SAP R/3 installation guides.Please see the documentation that comes with the
SAP R/3
Linux edition for SAP- and
Oracle-specific questions, as well
as resources from Oracle and
SAP OSS.SoftwareThe following CD-ROMs have been used for SAP-installations:SAP R/3 4.6B, Oracle 8.0.5NameNumberDescriptionKERNEL51009113SAP Kernel Oracle /
Installation / AIX, Linux, SolarisRDBMS51007558Oracle / RDBMS 8.0.5.X /
LinuxEXPORT151010208IDES / DB-Export /
Disc 1 of 6EXPORT251010209IDES / DB-Export /
Disc 2 of 6EXPORT351010210IDES / DB-Export /
Disc 3 of 6EXPORT451010211IDES / DB-Export /
Disc 4 of 6EXPORT551010212IDES / DB-Export /
Disc 5 of 6EXPORT651010213IDES / DB-Export /
Disc 6 of 6Additionally, I used the Oracle 8
Server (Pre-production version 8.0.5 for Linux,
Kernel Version 2.0.33) CD which is not really necessary, and
of course FreeBSD 4.3-STABLE (it was only a few days past 4.3
RELEASE).SAP R/3 4.6C SR2, Oracle 8.1.7NameNumberDescriptionKERNEL51014004SAP Kernel Oracle /
SAP Kernel Version 4.6D / DEC, LinuxRDBMS51012930Oracle 8.1.7/ RDBMS /
LinuxEXPORT151013953Release 4.6C SR2 / Export
/ Disc 1 of 4EXPORT151013953Release 4.6C SR2 / Export
/ Disc 2 of 4EXPORT151013953Release 4.6C SR2 / Export
/ Disc 3 of 4EXPORT151013953Release 4.6C SR2 / Export
/ Disc 4 of 4LANG151013954Release 4.6C SR2 /
Language / DE, EN, FR / Disc 1 of 3Depending on the languages you would like to install, additional
language CDs might be necessary. Here we're just using DE and EN, so
the first Language-CD is the only one needed. As a little note, the
numbers for all four export CDs are identical. All three language CDs
also have the same number (this is different from the 4.6B IDES
release CD numbering). At the time of writing this installation is
running on FreeBSD 4.5-STABLE (20.03.2002).
- SAP-Notes
+ SAP NotesThe following notes should be read before installing
SAP R/3 or proved to be useful
during installation:SAP R/3 4.6B, Oracle 8.0.5NumberTitle0171356SAP Software on Linux: Essential
Comments0201147INST: 4.6C R/3 Inst. on UNIX -
Oracle0373203Update / Migration Oracle 8.0.5 -->
8.0.6/8.1.6 LINUX0072984Release of Digital UNIX 4.0B for
Oracle0130581R3SETUP step DIPGNTAB terminates0144978Your system has not been installed
correctly0162266Questions and tips for R3SETUP on Windows
NT / W2KSAP R/3 4.6C, Oracle 8.1.7NumberTitle0015023Initializing table TCPDB (RSXP0004)
(EBCDIC)0045619R/3 with several languages or
typefaces0171356SAP Software on Linux: Essential
Comments0195603RedHat 6.1 Enterprise version:
Known problems0212876The new archiving tool SAPCAR0300900Linux: Released DELL Hardware0377187RedHat 6.2: important remarks0387074INST: R/3 4.6C SR2 Installation on
UNIX0387077INST: R/3 4.6C SR2 Inst. on UNIX -
Oracle0387078SAP Software on UNIX: OS Dependencies
4.6C SR2
- Hardware-Requirements
+ Hardware RequirementsThe following equipment is sufficient for the installation
of a SAP R/3 System. For production
use, a more exact sizing is of course needed:Component4.6B4.6CProcessor2 x 800MHz Pentium III2 x 800MHz Pentium IIIMemory1GB ECC2GB ECCHard Disk Space50-60GB (IDES)50-60GB (IDES)For use in production, Xeon-Processors with large cache,
high-speed disk access (SCSI, RAID hardware controller), USV
and ECC-RAM is recommended. The large amount of hard disk
space is due to the preconfigured IDES System, which creates
27 GB of database files during installation. This space is
also sufficient for initial production systems and application
data.SAP R/3 4.6B, Oracle 8.0.5The following off-the-shelf hardware was used: a dual processor
board with 2 800 MHz Pentium III processors, Adaptec 29160 Ultra160
SCSI adapter (for accessing a 40/80 GB DLT tape drive and CDROM),
Mylex AcceleRAID (2 channels, firmware 6.00-1-00 with 32 MB RAM).
To the Mylex Raid-controller are attached two 17 GB hard disks
(mirrored) and four 36 GB hard disks (RAID level 5).SAP R/3 4.6C, Oracle 8.1.7For this installation a DELL PowerEdge 2500 was used: a
dual processor board with two 1000 MHz Pentium III processors
(256 kB Cache), 2 GB PC133 ECC SDRAM, PERC/3 DC PCI Raid Controller
with 128 MB, and an EIDE DVD-ROM drive. To the RAID-controller are
attached two 18 GB hard disks (mirrored) and four 36 GB hard disks
(RAID level 5).Installation of FreeBSDFirst you have to install FreeBSD. There are several ways to do
this (FreeBSD 4.3 was installed via FTP, FreeBSD 4.5 directly from
release-CD).Disk LayoutTo keep it simple, the same disk layout both for the
SAP R/3 46B- and SAP R/3 46C
SR2-installation was used. Only the device names
changed, as the installations were on different hardware (/dev/da
and /dev/amr respectively, so if using an AMI MegaRAID, one will see
/dev/amr0s1a instead of /dev/da0s1a):File systemSize (1k-blocks)Size (GB)Mounted on/dev/da0s1a1.016.3031//dev/da0s1b6swap/dev/da0s1e2.032.6232/var/dev/da0s1f8.205.3398/usr/dev/da1s1e45.734.36145/compat/linux/oracle/dev/da1s1f2.032.6232/compat/linux/sapmnt/dev/da1s1g2.032.6232/compat/linux/usr/sapConfigure and initialize the two logical drives
with the Mylex- or PERC/3 RAID software beforehand.
The software can be started during the
bios boot phase. Please note that this disk layout differs slightly from
the SAP recommendations, as SAP suggests mounting the
oracle-subdirectories (and some others) separately - I
decided to just create them as real subdirectories for
simplicity.make world and a New KernelDownload the latest stable-sources. Rebuild world and your
custom kernel after configuring your kernel configuration file.
Here you should also include the
kernel parameters
which are required for both SAP R/3
and Oracle.Installing the Linux EnvironmentDuring the first installation with FreeBSD 4.3-STABLE I had some
trouble downloading the required RPM-files (for 4.3 stable, 2nd May
2001), but with FreeBSD 4.5-STABLE, everything went very smooth.
Should you encounter some problems, try to download those files by
hand. For a list of RPM-Mirrors and required files, see the
corresponding makefile.
- Installing Linux Base-system
+ Installing the Linux Base SystemFirst the linux_base
port needs to be installed (as root). This is
currently linux_base-6.&prompt.root; cd /usr/ports/emulators/linux_base
&prompt.root; make packageInstalling Linux DevelopmentThe Linux development is needed, if you want to install
Oracle on FreeBSD according to the
corresponding description in the handbook:&prompt.root; cd /usr/ports/devel/linux_devtools
&prompt.root; make packageLinux Development has only been installed for the SAP
R/3 46B IDES-installation. It is not needed, if
the Oracle DB is not relinked on the
FreeBSD system. This is the case if you are using the
Oracle tarball from a Linux system.
- Installing Necessary RPMs
+ Installing the Necessary RPMsRPMsTo start the R3SETUP-Program, PAM support is needed.
During the first SAP-Installation on FreeBSD 4.3-STABLE I
tried to install PAM with all the required packages and
finally forced the installation of the PAM package, which
worked. For SAP R/3 4.6C SR2 I
directly forced the installation of the PAM-RPM, which also
works, so it seems the dependent packages are not needed:&prompt.root; rpm -i --ignoreos --nodeps --root /compat/linux --dbpath /var/lib/rpm \
pam-0.68-7.i386.rpmFor Oracle 8.0.5 to run the
intelligent agent, I also had to install the RedHat Tcl package
tcl-8.0.5-30.i386.rpm (otherwise the
relinking during Oracle install
will not work). There are some other issues regarding
relinking of Oracle, but that is
a Oracle-Linux issue, not FreeBSD specific.
- Some additional hints
+ Some Additional HintsIt might also be a good idea to add linprocfs
to /etc/fstab. See man linprocfs.
Another parameter to set is kern.fallback_elf_brand=3
which is done in file /etc/sysctl.conf.
Creating the SAP/R3 EnvironmentCreating the Necessary File Systems and MountpointsFor a simple installation, it is sufficient to create the
following file systems:mount pointsize in GB/compat/linux/oracle45 GB/compat/linux/sapmnt2 GB/compat/linux/usr/sap2 GBIt is also necessary to created some links. Otherwise
the SAP-Installer will complain, as it is checking the
created links:&prompt.root; ln -s /compat/linux/oracle /oracle
&prompt.root; ln -s /compat/linux/sapmnt /sapmnt
&prompt.root; ln -s /compat/linux/usr/sap /usr/sapPossible error message during installation (here with
System PRD and the
SAP R/3 4.6C SR2
installation):INFO 2002-03-19 16:45:36 R3LINKS_IND_IND SyLinkCreate:200
Checking existence of symbolic link /usr/sap/PRD/SYS/exe/dbg to
/sapmnt/PRD/exe. Creating if it does not exist...
WARNING 2002-03-19 16:45:36 R3LINKS_IND_IND SyLinkCreate:400
Link /usr/sap/PRD/SYS/exe/dbg exists but it points to file
/compat/linux/sapmnt/PRD/exe instead of /sapmnt/PRD/exe. The
program cannot go on as long as this link exists at this
location. Move the link to another location.
ERROR 2002-03-19 16:45:36 R3LINKS_IND_IND Ins_SetupLinks:0
can not setup link '/usr/sap/PRD/SYS/exe/dbg' with content
'/sapmnt/PRD/exe'Creating Users and DirectoriesSAP R/3 needs two users and
three groups. The user names depend on the
SAP system id (SID) which consists
of three letters. Some of these SIDs are reserved
by SAP (for example
SAP and NIX. For a
complete list please see the SAP documentation). For the IDES
installation I used IDS, for the
4.6C SR2 installation PRD, as that system
is intended for production use. We have
therefore the following groups (group ids might differ, these
are just the values I used with my installation):group idgroup namedescription100dbaData Base Administrator101sapsysSAP System102operData Base OperatorFor a default Oracle-Installation, only group
dba is used. As
oper-group, one also uses group
dba (see Oracle- and
SAP-documentation for further information).We also need the following users:user iduser namegeneric namegroupadditional groupsdescription1000idsadm/prdadmsidadmsapsysoperSAP Administrator1002oraids/oraprdorasiddbaoperDB AdministratorAdding the users with adduser
requires the following (please note shell and home
directory) entries for SAP-Administrator:Name: sidadm
Password: ******
Fullname: SAP Administrator SID
Uid: 1000
Gid: 101 (sapsys)
Class:
Groups: sapsys dba
HOME: /home/sidadm
Shell: bash (/compat/linux/bin/bash)and for Database-Administrator:Name: orasid
Password: ******
Fullname: Oracle Administrator SID
Uid: 1002
Gid: 100 (dba)
Class:
Groups: dba
HOME: /oracle/sid
Shell: bash (/compat/linux/bin/bash)This should also include group
oper in case you are using both
groups dba and
oper.Creating DirectoriesThese directories are usually created as separate
file systems. This depends entirely on your requirements. I
choose to create them as simple directories, as they are all
located on the same RAID 5 anyway:First we will set owners and rights of some directories (as
user root):&prompt.root; chmod 775 /oracle
&prompt.root; chmod 777 /sapmnt
&prompt.root; chown root:dba /oracle
&prompt.root; chown sidadm:sapsys /compat/linux/usr/sap
&prompt.root; chmod 775 /compat/linux/usr/sapSecond we will create directories as user
orasid. These
will all be subdirectories of
/oracle/SID:&prompt.root; su - orasid
&prompt.root; cd /oracle/SID
&prompt.root; mkdir mirrlogA mirrlogB origlogA origlogB
&prompt.root; mkdir sapdata1 sapdata2 sapdata3 sapdata4 sapdata5 sapdata6
&prompt.root; mkdir saparch sapreorg
&prompt.root; exitFor the Oracle 8.1.7-installation
some additional directories are needed:&prompt.root; su - orasid
&prompt.root; cd /oracle
&prompt.root; mkdir 805_32
&prompt.root; mkdir client stage
&prompt.root; mkdir client/80x_32
&prompt.root; mkdir stage/817_32
&prompt.root; cd /oracle/SID
&prompt.root; mkdir 817_32The directory client/80x_32 is used
with exactly this name. Don't replace the x
with some number or anything.In the third step we create directories as user
sidadm:&prompt.root; su - sidadm
&prompt.root; cd /usr/sap
&prompt.root; mkdir SID
&prompt.root; mkdir trans
&prompt.root; exitEntries in /etc/servicesSAP R/3 requires some entries in file
/etc/services, which will not be set
correctly during installation under FreeBSD. Please add the
following entries (you need at least those entries
corresponding to the instance number - in this case,
00. It will do no harm adding all
entries from 00 to
99 for dp,
gw, sp and
ms). If you are going to use a saprouter
or need to access SAP OSS, you also need 99,
as port 3299 is usually used for the saprouter process on the
target system:
sapdp00 3200/tcp # SAP Dispatcher. 3200 + Instance-Number
sapgw00 3300/tcp # SAP Gateway. 3300 + Instance-Number
sapsp00 3400/tcp # 3400 + Instance-Number
sapms00 3500/tcp # 3500 + Instance-Number
sapmsSID 3600/tcp # SAP Message Server. 3600 + Instance-Number
sapgw00s 4800/tcp # SAP Secure Gateway 4800 + Instance-NumberNecessary LocaleslocaleSAP requires at least two locales that are not part of
the default RedHat installation. SAP offers the required
RPMs as download from their FTP-server (which is only
accessible if you are a customer with OSS-access). See note
0171356 for a list of RPMs you need.It is also possible to just create appropriate links
(for example from de_DE and
en_US ), but I would not recommend this
for a production system (so far it worked with the IDES
system without any problems, though). The following locales
are needed:de_DE.ISO-8859-1
en_US.ISO-8859-1Create the links like this:&prompt.root; cd /compat/linux/usr/share/locale
&prompt.root; ln -s de_DE de_DE.ISO-8859-1
&prompt.root; ln -s en_US en_US.ISO-8859-1If they are not present, there will be some problems
during the installation. If these are then subsequently
ignored (by setting the status of the offending steps to
OK in file CENTRDB.R3S), it will be impossible to log onto
the SAP-system without some additional effort.Kernel Tuningkernel tuningSAP R/3 Systems need a lot of resources. I therefore
added the following parameters to my kernel config-file:# Set these for memory pigs (SAP and Oracle):
options MAXDSIZ="(1024*1024*1024)"
options DFLDSIZ="(1024*1024*1024)"
# System V options needed.
options SYSVSHM #SYSV-style shared memory
options SHMMAXPGS=262144 #max amount of shared mem. pages
#options SHMMAXPGS=393216 #use this for the 46C inst.parameters
options SHMMNI=256 #max number of shared memory ident if.
options SHMSEG=100 #max shared mem.segs per process
options SYSVMSG #SYSV-style message queues
options MSGSEG=32767 #max num. of mes.segments in system
options MSGSSZ=32 #size of msg-seg. MUST be power of 2
options MSGMNB=65535 #max char. per message queue
options MSGTQL=2046 #max amount of msgs in system
options SYSVSEM #SYSV-style semaphores
options SEMMNU=256 #number of semaphore UNDO structures
options SEMMNS=1024 #number of semaphores in system
options SEMMNI=520 #number of semaphore identifiers
options SEMUME=100 #number of UNDO keysThe minimum values are specified in the documentation that
comes from SAP. As there is no description for Linux, see the
HP-UX-section (32-bit) for further information. As the system
for the 4.6C SR2 installation has more main memory, the shared
segments can be larger both for SAP
and Oracle, therefore choose a larger
number of shared memory pages.With the default installation of FreeBSD 4.5 on x386,
leave MAXDSIZ and DFLDSIZ at 1 GB maximum. Otherwise, strange
errors like ORA-27102: out of memory and
Linux Error: 12: Cannot allocate memory
might happen.Installing SAP R/3Preparing SAP CDROMsThere are many CDROMs to mount and unmount during the
installation. Assuming you have enough CDROM-drives, you
can just mount them all. I decided to copy the CDROM
contents to corresponding directories:/oracle/SID/sapreorg/cd-namewhere cd-name was one of KERNEL,
RDBMS, EXPORT1,
EXPORT2, EXPORT3,
EXPORT4, EXPORT5 and
EXPORT6 for the 4.6B/IDES-installation, and
KERNEL, RDBMS,
DISK1, DISK2,
DISK3, DISK4 and
LANG for the 4.6C SR2-installation. All the
filenames on the mounted CDs should be in capital letters,
otherwise use the option for mounting. So use the following
commands:&prompt.root; mount_cd9660 -g /dev/cd0a /mnt
&prompt.root; cp -R /mnt/* /oracle/SID/sapreorg/cd-name
&prompt.root; umount /mnt
- Running the install-script
+ Running the Install ScriptFirst you have to prepare an install-directory:&prompt.root; cd /oracle/SID/sapreorg
&prompt.root; mkdir install
&prompt.root; cd installThen the install-script is started, which will copy nearly
all the relevant files into the install-directory:&prompt.root; /oracle/SID/sapreorg/KERNEL/UNIX/INSTTOOL.SHThe IDES-Installation (4.6B) comes with a fully customized
SAP R/3 Demo-System, so there are six instead of just three
EXPORT-CDs. At this point the installation template
CENTRDB.R3S is for installing a standard
central instance (R/3 and Database), not the IDES central
instance, so one needs to copy the corresponding CENTRDB.R3S
from the EXPORT1 directory, otherwise R3SETUP will only ask
for three EXPORT-CDs.The newer SAP 4.6C SR2-release
comes with four EXPORT-CDs. The parameter-file that controls
the installation-steps is CENTRAL.R3S.
Contrary to earlier releases there are no separate installation
templates for a central instance with or without database.
SAP is using a separate template for DB-installation. To restart
the installation later it is however sufficient to restart with
the original file.During and after installation, SAP requires
hostname to return the computer name
only, not the fully qualified domain name. So either
set the hostname accordingly, or set an alias with
alias hostname='hostname -s' for
both orasid and
sidadm (and for
root at least during installation
steps performed as root). It is also
possible to adjust the installed profile- and login-scripts of
both users that are installed during
SAP-installation.Start R3SETUP 4.6BMake sure LD_LIBRARY_PATH is set correctly:&prompt.root; export LD_LIBRARY_PATH=/oracle/IDS/lib:/sapmnt/IDS/exe:/oracle/805_32/libStart R3SETUP as root from
installation directory:&prompt.root; cd /oracle/IDS/sapreorg/install
&prompt.root; ./R3SETUP -f CENTRDB.R3SThe script then asks some questions (defaults in brackets,
followed by actual input):QuestionDefaultInputEnter SAP System ID[C11]IDSEnterEnter SAP Instance Number[00]EnterEnter SAPMOUNT Directory[/sapmnt]EnterEnter name of SAP central host[troubadix.domain.de]EnterEnter name of SAP db host[troubadix]EnterSelect character set[1] (WE8DEC)EnterEnter Oracle server version (1) Oracle 8.0.5, (2) Oracle 8.0.6, (3) Oracle 8.1.5, (4) Oracle 8.1.61EnterExtract Oracle Client archive[1] (Yes, extract)EnterEnter path to KERNEL CD[/sapcd]/oracle/IDS/sapreorg/KERNELEnter path to RDBMS CD[/sapcd]/oracle/IDS/sapreorg/RDBMSEnter path to EXPORT1 CD[/sapcd]/oracle/IDS/sapreorg/EXPORT1Directory to copy EXPORT1 CD[/oracle/IDS/sapreorg/CD4_DIR]EnterEnter path to EXPORT2 CD[/sapcd]/oracle/IDS/sapreorg/EXPORT2Directory to copy EXPORT2 CD[/oracle/IDS/sapreorg/CD5_DIR]EnterEnter path to EXPORT3 CD[/sapcd]/oracle/IDS/sapreorg/EXPORT3Directory to copy EXPORT3 CD[/oracle/IDS/sapreorg/CD6_DIR]EnterEnter path to EXPORT4 CD[/sapcd]/oracle/IDS/sapreorg/EXPORT4Directory to copy EXPORT4 CD[/oracle/IDS/sapreorg/CD7_DIR]EnterEnter path to EXPORT5 CD[/sapcd]/oracle/IDS/sapreorg/EXPORT5Directory to copy EXPORT5 CD[/oracle/IDS/sapreorg/CD8_DIR]EnterEnter path to EXPORT6 CD[/sapcd]/oracle/IDS/sapreorg/EXPORT6Directory to copy EXPORT6 CD[/oracle/IDS/sapreorg/CD9_DIR]EnterEnter amount of RAM for SAP + DB850Enter (in Megabytes)Service Entry Message Server[3600]EnterEnter Group-ID of sapsys[101]EnterEnter Group-ID of oper[102]EnterEnter Group-ID of dba[100]EnterEnter User-ID of sidadm[1000]EnterEnter User-ID of orasid[1002]EnterNumber of parallel procs[2]EnterIf you had not copied the CDs to the different locations,
then the SAP-Installer cannot find the CD needed (identified
by the LABEL.ASC-File on CD) and would
then ask you to insert and mount the CD and confirm or enter
the mount path.The CENTRDB.R3S might not be
error-free. In my case, it requested EXPORT4 again (but
indicated the correct key (6_LOCATION, then 7_LOCATION
etc.), so one can just continue with entering the correct
values. Do not get irritated.Apart from some problems mentioned below, everything
should go straight through up to the point where the Oracle
database software needs to be installed.Start R3SETUP 4.6C SR2Make sure LD_LIBRARY_PATH is set correctly. This is a
different value from the 4.6B installation with
Oracle 8.0.5:&prompt.root; export LD_LIBRARY_PATH=/sapmnt/PRD/exe:/oracle/PRD/817_32/libStart R3SETUP as user root from installation directory:&prompt.root; cd /oracle/PRD/sapreorg/install
&prompt.root; ./R3SETUP -f CENTRAL.R3SThe script then asks some questions (defaults in brackets,
followed by actual input):QuestionDefaultInputEnter SAP System ID[C11]PRDEnterEnter SAP Instance Number[00]EnterEnter SAPMOUNT Directory[/sapmnt]EnterEnter name of SAP central host[majestix]EnterEnter Database System ID[PRD]PRDEnterEnter name of SAP db host[majestix]EnterSelect character set[1] (WE8DEC)EnterEnter Oracle server version (2) Oracle 8.1.72EnterExtract Oracle Client archive[1] (Yes, extract)EnterEnter path to KERNEL CD[/sapcd]/oracle/PRD/sapreorg/KERNELEnter amount of RAM for SAP + DB20441800Enter (in Megabytes)Service Entry Message Server[3600]EnterEnter Group-ID of sapsys[100]EnterEnter Group-ID of oper[101]EnterEnter Group-ID of dba[102]EnterEnter User-ID of oraprd[1002]EnterEnter User-ID of prdadm[1000]EnterLDAP support3Enter (no support)Installation step completed[1] (continue)EnterChoose installation service[1] (DB inst,file)EnterSo far, creation of users gives an error during
installation in phases OSUSERDBSID_IND_ORA (for creating
user orasid) and
OSUSERSIDADM_IND_ORA (creating user
sidadm).Apart from some problems mentioned below, everything
should go straight through up to the point where the Oracle
database software needs to be installed.Installing Oracle 8.0.5Please see the corresponding SAP-Notes and Oracle Readmes
regarding Linux and Oracle DB for possible problems. Most if
not all problems stem from incompatible libraries.For more information on installing Oracle, refer to the Installing Oracle
chapter.Installing the Oracle 8.0.5 with orainstIf Oracle 8.0.5 is to be
used, some additional libraries are needed for successfully
relinking, as Oracle 8.0.5 was linked with an old glibc
(RedHat 6.0), but RedHat 6.1 already uses a new glibc. So
you have to install the following additional packages to
ensure that linking will work:compat-libs-5.2-2.i386.rpmcompat-glibc-5.2-2.0.7.2.i386.rpmcompat-egcs-5.2-1.0.3a.1.i386.rpmcompat-egcs-c++-5.2-1.0.3a.1.i386.rpmcompat-binutils-5.2-2.9.1.0.23.1.i386.rpmSee the corresponding SAP-Notes or Oracle Readmes for
further information. If this is no option (at the time of
installation I did not have enough time to check this), one
could use the original binaries, or use the relinked
binaries from an original RedHat System.For compiling the intelligent agent, the RedHat Tcl
package must be installed. If you cannot get
tcl-8.0.3-20.i386.rpm, a newer one like
tcl-8.0.5-30.i386.rpm for RedHat 6.1
should also do.Apart from relinking, the installation is
straightforward:&prompt.root; su - oraids
&prompt.root; export TERM=xterm
&prompt.root; export ORACLE_TERM=xterm
&prompt.root; export ORACLE_HOME=/oracle/IDS
&prompt.root; cd /ORACLE_HOME/orainst_sap
&prompt.root; ./orainstConfirm all Screens with Enter until the software is
installed, except that one has to deselect the
Oracle On-Line Text Viewer, as this is
not currently available for Linux. Oracle then wants to
relink with i386-glibc20-linux-gcc
instead of the available gcc,
egcs or i386-redhat-linux-gcc
.Due to time constrains I decided to use the binaries
from an Oracle 8.0.5 PreProduction
release, after the first
attempt at getting the version from the RDBMS-CD working,
failed, and finding and accessing the correct RPMs was a
nightmare at that time.
- Installing the Oracle 8.0.5 Pre-Production release for
+ Installing the Oracle 8.0.5 Pre-production Release for
Linux (Kernel 2.0.33)This installation is quite easy. Mount the CD, start the
installer. It will then ask for the location of the Oracle
home directory, and copy all binaries there. I did not
delete the remains of my previous RDBMS-installation tries,
though.Afterwards, Oracle Database could be started with no
problems.
- Installing the Oracle 8.1.7 linux tarball
+ Installing the Oracle 8.1.7 Linux TarballTake the tarball oracle81732.tgz you
produced from the installation directory on a Linux system
and untar it to /oracle/SID/817_32/.Continue with SAP R/3 InstallationFirst check the environment settings of users
idsamd
(sidadm) and
oraids (orasid). They should now
both have the files .profile,
.login and .cshrc
which are all using hostname. In case the
system's hostname is the fully qualified name, you need to
change hostname to hostname
-s within all three files.Database LoadAfterwards, R3SETUP can either be restarted or continued
(depending on whether exit was chosen or not). R3SETUP then
creates the tablespaces and loads the data (for 46B IDES, from
EXPORT1 to EXPORT6, for 46C from DISK1 to DISK4) with R3load
into the database.When the database load is finished (might take a few
hours), some passwords are requested. For test
installations, one can use the well known default passwords
(use different ones if security is an issue!):QuestionInputEnter Password for sapr3sapEnterConfirum Password for sapr3sapEnterEnter Password for syschange_on_installEnterConfirm Password for syschange_on_installEnterEnter Password for systemmanagerEnterConfirm Password for systemmanagerEnterAt this point I had a few problems with
dipgntab during the 4.6B
installation.ListenerStart the Oracle-Listener as user
orasid as follows:&prompt.user; umask 0; lsnrctl startOtherwise you might get ORA-12546 as the sockets will not
have the correct permissions. See SAP note 072984.Updating MNLS TablesIf you plan to import non-Latin-1 languages into the SAP-System,
you have to update the Multi National Language Support tables.
This is described in the SAP OSS-Notes 15023 and 45619. Otherwise,
you can skip this question during SAP installation.If you don't need MNLS, it is still necessary to check
table TCPDB and initializing it if this hasn't been done. See
SAP note 0015023 and 0045619 for further information.Post-installation StepsRequest SAP R/3 License KeyYou have to request your SAP R/3 License Key. This is needed,
as the temporary license that was installed during installation
is only valid for four weeks. First get the hardware key. Log
on as user idsadm and call
saplicense:&prompt.root; /sapmnt/IDS/exe/saplicense -getCalling saplicense without options gives
a list of options. Upon receiving the license key, it can be
installed using:&prompt.root; /sapmnt/IDS/exe/saplicense -installYou are then required to enter the following values:SAP SYSTEM ID = SID, 3 chars
CUSTOMER KEY = hardware key, 11 chars
INSTALLATION NO = installation, 10 digits
EXPIRATION DATE = yyyymmdd, usually "99991231"
LICENSE KEY = license key, 24 charsCreating UsersCreate a user within client 000 (for some tasks required
to be done within client 000, but with a user different from
users sap* and
ddic). As a user name, I usually choose
wartung (or
service in English). Profiles
required are sap_new and
sap_all. For additional safety the
passwords of default users within all clients should be
changed (this includes users sap* and
ddic).Configure Transport System, Profile, Operation Modes, Etc.Within client 000, user different from ddic
and sap*, do at least the following:TaskTransactionConfigure Transport System, eg as Stand-Alone
Transport Domain EntitySTMSCreate / Edit Profile for SystemRZ10Maintain Operation Modes and InstancesRZ04These and all the other post-installation steps are
thoroughly described in SAP installation guides.Edit initsid.sap (initIDS.sap)The file /oracle/IDS/dbs/initIDS.sap
contains the SAP backup profile. Here the size of the tape to
be used, type of compression and so on need to be defined. To
get this running with sapdba /
brbackup, I changed the following values:compress = hardware
archive_function = copy_delete_save
cpio_flags = "-ov --format=newc --block-size=128 --quiet"
cpio_in_flags = "-iuv --block-size=128 --quiet"
tape_size = 38000M
tape_address = /dev/nsa0
tape_address_rew = /dev/sa0Explanations:compress The tape I use is a HP DLT1
which does hardware compression.archive_function This defines the
default behavior for saving Oracle archive logs: New logfiles
are saved to tape, already saved logfiles are saved again and
are then deleted. This prevents lots of trouble if you need to
recover the database, and one of the archive-tapes has gone
bad.cpio_flags Default is to use -B which
sets block size to 5120 Bytes. For DLT-Tapes, HP recommends at
least 32 K block size, so I used --block-size=128 for
64 K. --format=newc is needed I have inode numbers greater than
65535. The last option --quiet is needed as otherwise
brbackup
complains as soon as cpio outputs the
numbers of blocks saved.cpio_in_flags Flags needed for
loading data back from tape. Format is recognized
automatically.tape_size This usually gives the raw
storage capability of the tape. For security reason (we use
hardware compression), the value is slightly lower than the
actual value.tape_address The non-rewindable
device to be used with cpio.tape_address_rew The rewindable device to be
used with cpio.Configuration Issues after InstallationThe following SAP-parameters should be tuned after
installation (examples for IDES 46B, 1 GB memory):NameValueztta/roll_extension250000000abap/heap_area_dia300000000abap/heap_area_nondia400000000em/initial_size_MB256em/blocksize_kB1024ipc/shm_psize_4070000000SAP-Note 0013026:NameValueztta/dynpro_area2500000SAP-Note 0157246:NameValuerdisp/ROLL_MAXFS16000rdisp/PG_MAXFS30000With the above parameters, on a system with 1 gigabyte
of memory, one may find memory consumption similar to:Mem: 547M Active, 305M Inact, 109M Wired, 40M Cache, 112M Buf, 3492K Free
- Problems During Installation
+ Problems during Installation
- Restart R3SETUP after fixing a problem
+ Restart R3SETUP after Fixing a ProblemR3SETUP stops if it encounters an error. If you have
looked at the corresponding logfiles and fixed the error,
you have to start R3SETUP again, usually selecting REPEAT
as option for the last step R3SETUP complained about.To restart R3SETUP, just start it with the corresponding
R3S-file:
&prompt.root; ./R3SETUP -f CENTRDB.R3S
for 4.6B, or with
&prompt.root; ./R3SETUP -f CENTRAL.R3S
for 4.6C, no matter whether the error occurred
with CENTRAL.R3S or
DATABASE.R3S.At some stages, R3SETUP assumes that both database-
and SAP-processes are up and running (as those were steps it
already completed). Should errors occur and for example the
database could not be started, you have to start both database
and SAP by hand after you fixed the errors and before starting
R3SETUP again.Don't forget to also start the oracle listener again (as
orasid with
umask 0; lsnrctl start) if it was also
stopped (for example due to a necessary reboot of the
system).
- OSUSERSIDADM_IND_ORA During R3SETUP
+ OSUSERSIDADM_IND_ORA during R3SETUPIf R3SETUP complains at this stage, edit the
template file R3SETUP used at that time
(CENTRDB.R3S (4.6B) or either
CENTRAL.R3S or
DATABASE.R3S (4.6C)).
Locate [OSUSERSIDADM_IND_ORA] or search for the
only STATUS=ERROR-entry
and edit the following values:HOME=/home/sidadm (was empty)
STATUS=OK (had status ERROR)
Then you can restart R3SETUP again.
- OSUSERDBSID_IND_ORA During R3SETUP
+ OSUSERDBSID_IND_ORA during R3SETUPPossibly R3SETUP also complains at this stage. The error
here is similar to the one in phase OSUSERSIDADM_IND_ORA.
Just edit
the template file R3SETUP used at that time
(CENTRDB.R3S (4.6B) or either
CENTRAL.R3S or
DATABASE.R3S (4.6C)).
Locate [OSUSERDBSID_IND_ORA] or search for the
only STATUS=ERROR-entry
and edit the following value in that section:STATUS=OKThen restart R3SETUP.
- oraview.vrf FILE NOT FOUND During Oracle Installation
+ oraview.vrf FILE NOT FOUND during Oracle InstallationYou have not deselected Oracle On-Line Text Viewer
before starting the installation. This is marked for installation even
though this option is currently not available for Linux. Deselect this
product inside the Oracle installation menu and restart installation.
- TEXTENV_INVALID During R3SETUP, RFC or SAPGUI Start
+ TEXTENV_INVALID during R3SETUP, RFC or SAPGUI StartIf this error is encountered, the correct locale is
missing. SAP note 0171356 lists the necessary RPMs that need
be installed (eg saplocales-1.0-3,
saposcheck-1.0-1 for RedHat 6.1). In case
you ignored all the related errors and set the corresponding
status from ERROR to OK (in CENTRDB.R3S) every time R3SETUP
complained and just restarted R3SETUP, the SAP-System will not
be properly configured and you will then not be able to
connect to the system with a
sapgui, even though the system
can be started. Trying to connect with the old Linux
sapgui gave the following
messages:Sat May 5 14:23:14 2001
*** ERROR => no valid userarea given [trgmsgo. 0401]
Sat May 5 14:23:22 2001
*** ERROR => ERROR NR 24 occured [trgmsgi. 0410]
*** ERROR => Error when generating text environment. [trgmsgi. 0435]
*** ERROR => function failed [trgmsgi. 0447]
*** ERROR => no socket operation allowed [trxio.c 3363]
SpeicherzugriffsfehlerThis behavior is due to SAP R/3 being unable to correctly
assign a locale and also not being properly configured itself
(missing entries in some database tables). To be able to connect
to SAP, add the following entries to file
DEFAULT.PFL (see note 0043288):abap/set_etct_env_at_new_mode = 0
install/collate/active = 0
rscp/TCP0B = TCP0BRestart the SAP system. Now you can connect to the
system, even though country-specific language settings might
not work as expected. After correcting country-settings
(and providing the correct locales), these entries can be
removed from DEFAULT.PFL and the SAP
system can be restarted.ORA-00001This error only happened with
Oracle 8.1.7 on FreeBSD 4.5.
The reason was that the Oracle database could not initialize itself
properly and crashed, leaving semaphores and shared memory on the
system. The next try to start the database then returned
ORA-00001.Find them with ipcs -a and remove them
with ipcrm.
- ORA-00445 (background process PMON did not start)
+ ORA-00445 (Background Process PMON Did Not Start)This error happened with Oracle 8.1.7.
This error is reported if the Database is started with
the usual startsap-script (for example
startsap_majestix_00) as user
prdadm.A possible workaround is to start the database as user
oraprd instead
with svrmgrl:&prompt.user; svrmgrl
SVRMGR> connect internal;
SVRMGR> startup;
SVRMGR> exit
- ORA-12546 (start Listener with Correct Permissions)
+ ORA-12546 (Start Listener with Correct Permissions)Start the Oracle Listener as user
oraids with the following commands:&prompt.root; umask 0; lsnrctl startOtherwise you might get ORA-12546 as the sockets will not
have the correct permissions. See SAP note 0072984.
- ORA-27102 (out of memory)
+ ORA-27102 (Out of Memory)This error happened whilst trying to use values for
MAXDSIZ and DFLDSIZ
greater than 1 GB (1024x1024x1024). Additionally, I got
Linux Error 12: Cannot allocate memory.
- [DIPGNTAB_IND_IND] During R3SETUP
+ [DIPGNTAB_IND_IND] during R3SETUPIn general, see SAP note 0130581 (R3SETUP step
DIPGNTAB terminates). During the
IDES-specific installation, for some reasons the installation
process was not using the proper SAP system name IDS, but
the empty string "" instead. This lead to some minor problems
with accessing directories, as the paths are generated
dynamically using SID (in this case IDS). So instead
of accessing:/usr/sap/IDS/SYS/...
/usr/sap/IDS/DVMGS00the following paths were used:/usr/sap//SYS/...
/usr/sap/D00To continue with the installation, I created a link and an
additional directory:&prompt.root; pwd
/compat/linux/usr/sap
&prompt.root; ls -l
total 4
drwxr-xr-x 3 idsadm sapsys 512 May 5 11:20 D00
drwxr-x--x 5 idsadm sapsys 512 May 5 11:35 IDS
lrwxr-xr-x 1 root sapsys 7 May 5 11:35 SYS -> IDS/SYS
drwxrwxr-x 2 idsadm sapsys 512 May 5 13:00 tmp
drwxrwxr-x 11 idsadm sapsys 512 May 4 14:20 transI also found SAP notes (0029227 and 0008401) describing
this behavior. I did not encounter any of these problems with
the SAP 4.6C-installation.
- [RFCRSWBOINI_IND_IND] During R3SETUP
+ [RFCRSWBOINI_IND_IND] during R3SETUPDuring installation of SAP 4.6C,
this error was just the result of another error happening
earlier during installation. In this case, you have to look
through the corresponding logfiles and correct the real
problem.If after looking through the logfiles this error is
indeed the correct one (check the SAP-notes), you can set
STATUS of the offending step from ERROR to OK (file
CENTRDB.R3S) and restart R3SETUP. After
installation, you have to execute the report
RSWBOINS from transaction SE38. See SAP
note 0162266 for additional information about phase
RFCRSWBOINI and
RFCRADDBDIF.
- [RFCRADDBDIF_IND_IND] During R3SETUP
+ [RFCRADDBDIF_IND_IND] during R3SETUPHere the same restrictions apply: Make sure by looking
through the logfiles, that this error is not caused by some
previous problems.If you can confirm that SAP-Note 0162266 applies, just
set STATUS of the offending step from ERROR to OK (file
CENTRDB.R3S) and restart R3SETUP. After
installation, you have to execute the report
RADDBDIF from transaction SE38.
- sigaction sig31: File size limit exceeded
+ sigaction sig31: File size limit exceededThis error occurred during start of SAP-processes
disp+work. If starting SAP with the
startsap-script, subprocesses are then started which
detach and do the dirty work of starting all other SAP
processes. As a result, the script itself won't notice
if something goes wrong.To check whether the SAP processes did start properly,
have a look at the process status with
ps ax | grep SID, which will give
you a list of all Oracle- and SAP-processes. If it looks like
some processes are missing or if you can't connect to the SAP-System,
look at the corresponding logfiles which can be found
at /usr/sap/SID/DVEBMGSnr/work/.
The files to look at are dev_ms and
dev_disp.Signal 31 happens here if the amount of shared memory used by
Oracle and SAP exceed the one defined within the kernel configuration
file and could be resolved by using a larger value:# larger value for 46C production systems:
options SHMMAXPGS=393216
# smaller value sufficient for 46B:
#options SHMMAXPGS=262144
- Start of saposcol failed
+ Start of saposcol FailedThere are some problems with Program saposcol (version 4.6D).
The SAP-System is using saposcol to collect data about the
system performance. This program is not needed to use the SAP-System,
so this problem can be considered a minor one. The older versions
(4.6B) does work, but doesn't collect all the data (many calls will
just return 0, for example for CPU usage).Advanced TopicsIf you are curious as to how the Linux binary compatibility
works, this is the section you want to read. Most of what follows
is based heavily on an email written to &a.chat; by Terry Lambert
tlambert@primenet.com (Message ID:
<199906020108.SAA07001@usr09.primenet.com>).How Does It Work?execution class loaderFreeBSD has an abstraction called an execution class
loader. This is a wedge into the &man.execve.2; system
call.What happens is that FreeBSD has a list of loaders, instead of
a single loader with a fallback to the #!
loader for running any shell interpreters or shell scripts.Historically, the only loader on the Unix platform examined
the magic number (generally the first 4 or 8 bytes of the file) to
see if it was a binary known to the system, and if so, invoked the
binary loader.If it was not the binary type for the system, the
&man.execve.2; call returned a failure, and the shell attempted to
start executing it as shell commands.The assumption was a default of whatever the current
shell is.Later, a hack was made for &man.sh.1; to examine the first two
characters, and if they were :\n, then it
invoked the &man.csh.1; shell instead (we believe SCO first made
this hack).What FreeBSD does now is go through a list of loaders, with a
generic #! loader that knows about interpreters
as the characters which follow to the next whitespace next to
last, followed by a fallback to
/bin/sh.ELFFor the Linux ABI support, FreeBSD sees the magic number as an
ELF binary (it makes no distinction between FreeBSD, Solaris,
Linux, or any other OS which has an ELF image type, at this
point).SolarisThe ELF loader looks for a specialized
brand, which is a comment section in the ELF
image, and which is not present on SVR4/Solaris ELF
binaries.For Linux binaries to function, they must be
branded as type Linux;
from &man.brandelf.1;:&prompt.root; brandelf -t Linux fileWhen this is done, the ELF loader will see the
Linux brand on the file.ELFbrandingWhen the ELF loader sees the Linux brand,
the loader replaces a pointer in the proc
structure. All system calls are indexed through this pointer (in
a traditional Unix system, this would be the
sysent[] structure array, containing the system
calls). In addition, the process is flagged for special handling of
the trap vector for the signal trampoline code, and several other
(minor) fix-ups that are handled by the Linux kernel
module.The Linux system call vector contains, among other things, a
list of sysent[] entries whose addresses reside
in the kernel module.When a system call is called by the Linux binary, the trap
code dereferences the system call function pointer off the
proc structure, and gets the Linux, not the
FreeBSD, system call entry points.In addition, the Linux mode dynamically
reroots lookups; this is, in effect, what the
union option to FS mounts
(not the unionfs!) does. First, an attempt
is made to lookup the file in the
/compat/linux/original-path
directory, then only if that fails, the
lookup is done in the
/original-path
directory. This makes sure that binaries that require other
binaries can run (e.g., the Linux toolchain can all run under
Linux ABI support). It also means that the Linux binaries can
load and exec FreeBSD binaries, if there are no corresponding
Linux binaries present, and that you could place a &man.uname.1;
command in the /compat/linux directory tree
to ensure that the Linux binaries could not tell they were not
running on Linux.In effect, there is a Linux kernel in the FreeBSD kernel; the
various underlying functions that implement all of the services
provided by the kernel are identical to both the FreeBSD system
call table entries, and the Linux system call table entries: file
system operations, virtual memory operations, signal delivery,
System V IPC, etc… The only difference is that FreeBSD
binaries get the FreeBSD glue functions, and
Linux binaries get the Linux glue functions
(most older OS's only had their own glue
functions: addresses of functions in a static global
sysent[] structure array, instead of addresses
of functions dereferenced off a dynamically initialized pointer in
the proc structure of the process making the
call).Which one is the native FreeBSD ABI? It does not matter.
Basically the only difference is that (currently; this could
easily be changed in a future release, and probably will be after
this) the FreeBSD glue functions are
statically linked into the kernel, and the Linux glue functions
can be statically linked, or they can be accessed via a kernel
module.Yeah, but is this really emulation? No. It is an ABI
implementation, not an emulation. There is no emulator (or
simulator, to cut off the next question) involved.So why is it sometimes called Linux emulation?
To make it hard to sell FreeBSD! Really, it
is because the historical implementation was done at a time when
there was really no word other than that to describe what was
going on; saying that FreeBSD ran Linux binaries was not true, if
you did not compile the code in or load a module, and there needed
to be a word to describe what was being loaded—hence
the Linux emulator.