Commit Graph

598 Commits

Author SHA1 Message Date
David E. O'Brien
81c6395691 It appears we really shouldn't be following this example man page -- one
should not use a `%' in examples.

I don't know if this is the consensus of doc@, or just a unilateral decision
of committer that corrected my following of this example.  Maybe a docs
person could review these files and see if they still show current guidelines.
2001-08-01 04:27:48 +00:00
Andrey A. Chernov
a1ff8bfdb3 Since we remove skey... 2001-07-30 16:05:03 +00:00
Peter Wemm
791da841a1 Take -Wconversion out of BDECFLAGS. It is not particularly useful for
us anyway because it doesn't work right on the x86 and alpha.  On
K&R code, small ints would be promoted to int.  ANSI-C doesn't require
this and the small ints can be passed taking 8 or 16 bits of stack
space.  However, the x86 abi that we use *does* promote to 32 bit,
and the alpha ABI passes them in 64 bit registers so we dont have
that aspect of the problem here.  Losing float precision by having it
cast down to int because the funtion prototype specifies int is the
least of our problems.  -Wmissing-prototypes helps here anyway.
2001-07-27 16:23:53 +00:00
Brian Somers
68fe945a06 Remove redundant mtu/mru/speed settings
MFC after: 6 days
2001-07-24 13:11:57 +00:00
Gregory Neil Shapiro
f4843be999 New make knob, SENDMAIL_M4_FLAGS, modifies the flags passed to m4 when
building a .cf file from a .mc file.

Include -D_FFR_TLS_O_T to enable tls policy control since the sendmail binary
build enables that FFR as well.

PR:		conf/28361
MFC after:	1 week
2001-07-23 01:33:54 +00:00
Hellmuth Michaelis
fae7473ba4 Add a patch from the isdn mailinglist, Juha writes:
ppp in 4.x apparently does a close(2) after opening the tun device;
 i4brunppp starts up with only file descriptors 0 and 1 open (to the rbch
 device) -> tun gets opened as 2 -> tun gets closed -> later use results
 in EBADF. A quick fix to i4brunppp.c makes the thing work (I know, this
 is ugly, but I needed it up quick...):

Submitted by:	Juha-Matti Liukkonen <jml@cubical.fi>
2001-07-21 11:52:31 +00:00
Hellmuth Michaelis
868080172d Add the i4brunppp utility to the example section. This utility is one way
of taking incoming calls with i4b in conjunction with userland ppp(8).
2001-07-21 11:49:28 +00:00
Hellmuth Michaelis
346c9818d5 update ReleaseNotes for isdnd keyword maxconnecttime 2001-07-21 11:30:38 +00:00
Ruslan Ermilov
d72ca9ddd1 Removed the comment that required all FreeBSD manpages
to have the $FreeBSD$ keyword, as this is now enforced
by the CVSROOT/commit_prep.pl script.

Fold multi-word macro arguments into a single argument
by putting the surrounding double quotes - this speeds
up the -mdoc processing drastically (of course if used
systematically).

Use the new features of -mdoc: exact -width specifiers,
.In macro as an ``.Fd #include'' replacement.
2001-07-18 10:04:34 +00:00
Sheldon Hearn
03e563d7dc Remove an example of bad sentence breaking style. 2001-07-18 08:51:04 +00:00
Dima Dorfman
02c4d9cff7 Remove whitespace at EOL. 2001-07-15 08:21:37 +00:00
Mark Murray
b4248e7919 Provide a hint for the OPIE 'insecure' mode. 2001-07-10 17:11:02 +00:00
Brian Somers
7bc6d0158f Fix the type of the NULL arg to execl()
Idea from: Theo de Raadt <deraadt@openbsd.org>
2001-07-09 09:24:06 +00:00
Ruslan Ermilov
5521ff5a4d mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2). 2001-07-06 16:46:48 +00:00
Brian Somers
8e18db5a52 Fix some typos.
Submitted by:	Jimmy Olgeni <olgeni@uli.it>
MFC after:	1 week
2001-07-02 12:23:28 +00:00
Dima Dorfman
232edd1c88 Correct a brain-o in the stats output.
PR:		24839
Submitted by:	AMAKAWA Shuhei <amakawa@sf.t.u-tokyo.ac.jp>
2001-06-30 21:39:31 +00:00
Gregory Neil Shapiro
f87b85b2f0 Typo fix (modifes -> modifies) 2001-06-27 01:48:02 +00:00
Ruslan Ermilov
29d19e86ae Make this really work. 2001-06-18 12:35:14 +00:00
Nik Clayton
4ed950ad98 Include a mention of WRKDIRPREFIX, useful when mounting /usr/ports readonly
from another host.
2001-06-15 08:35:57 +00:00
Hajimu UMEMOTO
3384154590 Sync with recent KAME.
This work was based on kame-20010528-freebsd43-snap.tgz and some
critical problem after the snap was out were fixed.
There are many many changes since last KAME merge.

TODO:
  - The definitions of SADB_* in sys/net/pfkeyv2.h are still different
    from RFC2407/IANA assignment because of binary compatibility
    issue.  It should be fixed under 5-CURRENT.
  - ip6po_m member of struct ip6_pktopts is no longer used.  But, it
    is still there because of binary compatibility issue.  It should
    be removed under 5-CURRENT.

Reviewed by:	itojun
Obtained from:	KAME
MFC after:	3 weeks
2001-06-11 12:39:29 +00:00
Andrey A. Chernov
ce4bd508ed ISO_ -> ISO in comment 2001-06-11 01:32:33 +00:00
Andrey A. Chernov
fe6f7d3ab4 ISO_ -> ISO in DOC_LANG 2001-06-11 01:26:52 +00:00
Hajimu UMEMOTO
ce6282db3b Implement EDNS0 support, as EDNS0 support will be made mandatory for
IPv6 transport-ready resolvers/DNS servers.  Need careful configuration
when enable it. (default config is not affected).
See manpage for details.

XXX visible symbol __res_opt() is added, however, it is not supposed to be
called from outside, libc minor is not bumped.

Obtained from:	KAME/NetBSD
2001-06-10 20:25:24 +00:00
Daniel C. Sobral
db97c662cf Use ${EDITOR} as claimed.
Source rc.conf and use ${firewall_script} instead of rc.firewall.

Textwidth formatting of comments and text.

PR:
Submitted by:	Maxim <maxim@news1.macomnet.ru>

(sorry if I got name/email/committer status wrong :)
2001-06-06 19:34:02 +00:00
Daniel C. Sobral
7b4d3c72cc Introduce an example script of safe changing of ipfw(8) rules.
I'm sure this can be much improved, but this works fairly well.

PR:		27887
Submitted by:	Alexandre Peixoto <alexandref@tcoip.com.br>
MFC after:	1 week
2001-06-06 15:45:04 +00:00
Hellmuth Michaelis
789ffddeae added Sergio de Souza Prallon (prallon@tmp.com.br), the author of
the itjc hardware driver.
2001-06-02 12:27:37 +00:00
Hellmuth Michaelis
0b44e3e96c update the isdn4bsd general documentation 2001-06-02 12:21:16 +00:00
Hellmuth Michaelis
afbbd405df bring the roadmap to isdn4bsd up to date. 2001-06-02 11:48:50 +00:00
Hellmuth Michaelis
12aeb68f9d update the postcard list 2001-06-02 11:31:33 +00:00
Mark Murray
7ed3b855bb PERL_THREADED is too experimental at this stage. Remove. 2001-05-31 11:19:00 +00:00
Hellmuth Michaelis
58e7e3b406 Add an example of a kernel configuration file fragment for ISDN. 2001-05-27 11:34:15 +00:00
Sheldon Hearn
68933300c9 The PERL_THREADED knob is causing too many people too many problems.
Add a dire warning about the experimental nature of threaded Perl.
2001-05-27 11:23:31 +00:00
Hellmuth Michaelis
9210280057 Add the contributed directory from the i4b tarball and the files from it
which would be nice to have.
Move isdnd_acct and isdnctl to the contrib directory where they belong to.
2001-05-25 13:25:59 +00:00
Hellmuth Michaelis
698c326a2e Submitted by: phk
Add the V.21 modem emulator code written by phk from the old i4b tarball.
2001-05-25 13:04:58 +00:00
Alexander Langer
5bfc2e1909 This script can control the state of your ISDN line. It counts
how many scripts/users currently use the ISDN line and uses
"ifconfig down" if noone uses it any more.

Not objected by:	hm
2001-05-25 12:27:00 +00:00
Hellmuth Michaelis
53a601f0e1 update isdn4bsd related information. 2001-05-25 12:18:47 +00:00
Brian Somers
fa8c1aaabc Mention that ppp.conf.isdn isn't appropriate for external TAs
Add a section to ppp.conf.sample that is.

MFC after: 3 weeks
2001-05-25 12:11:02 +00:00
Ruslan Ermilov
22f7d1021a mount_portal -> mount_portalfs. 2001-05-24 13:15:49 +00:00
Ruslan Ermilov
f3bb47cca0 Add NO_I4B to avoid building/installing isdn4bsd package.
Prompted by:	Alexandr Listopad <laa@laa.zp.ua>
MFC after:	3 days
2001-05-23 13:32:32 +00:00
Ruslan Ermilov
5b5df07ddc Grab headers from /usr/include. 2001-05-18 13:58:08 +00:00
Ruslan Ermilov
59ca51df49 Removed unneeded stuff. 2001-05-18 13:56:29 +00:00
Assar Westerlund
eba4f69287 clarify comment about MAKE_KERBEROS5. noticed by Peter Pentchev
<roam@orbitel.bg>
2001-05-12 14:38:00 +00:00
Brian Somers
3a51f88a27 Be a little clearer all characters after a # are ignored unless the
# is escaped or quoted.  Add an example of # characters as part of
a phone number.

PR:		26605
2001-05-08 08:58:57 +00:00
Jens Schweikhardt
ec09ef4ff8 pseudo-device -> device in kernel config lines. Removed whitespace at EOL.
Reviewed by:	joerg, dd
2001-05-01 09:15:30 +00:00
Matthew Dillon
1561f90e65 Remove a real FQDN host reference from the example
Add $FreeBSD tag
2001-04-30 20:19:22 +00:00
Dima Dorfman
47a3012123 Clarify a little: the mandatory argument is an event number.
PR:		26905
Submitted by:	AMAKAWA Shuhei <sa264@cam.ac.uk>
2001-04-29 03:54:48 +00:00
Ruslan Ermilov
c59eb7cfb5 Removed reference to withdrawn secure-supfile. 2001-04-27 12:15:15 +00:00
Ruslan Ermilov
c47d12ea1c stable-supfile now covers 4.x-stable. 2001-04-27 12:08:34 +00:00
Ruslan Ermilov
7928b68539 MFS: revision 1.19.2.4
Correct comments to fit current realities of exporting crypto.
2001-04-27 12:00:35 +00:00
Jim Mock
20affa347a Document XFREE86_VERSION. 2001-04-25 19:27:39 +00:00
Ruslan Ermilov
9fdcafcf45 The semantics of the .Os call has been changed. For CURRENT,
this currently implies the default argument of "FreeBSD 5.0".
2001-04-23 15:15:49 +00:00
Maxim Sobolev
bcc11eec02 Add missed and update existing MASTER_SITE_*. 2001-04-22 19:01:44 +00:00
Satoshi Asami
b5f997102e Add ports-picobsd. 2001-04-22 16:51:49 +00:00
Ruslan Ermilov
1837dd5db5 mdoc.samples(7) is superseded by mdoc(7). 2001-04-17 12:49:42 +00:00
Luigi Rizzo
047073a13a New script to help creation of shared readonly diskless partition.
It also has some instructions on how to setup the client and
the server. I have been using this code for over 2 years
on RELENG_3 and later RELENG_4. Have not tried on CURRENT, but
in case there are any issues these are in /etc/rc and
/etc/rc.diskless{12}
2001-04-16 06:37:03 +00:00
Brian Somers
11027719c4 Suggest that kernels are built with ``cd /usr/src; make buildkernel''
Add a comment saying that our softc is automatically allocated by the
parent bus.
Fix lots of spellings
2001-04-14 18:51:39 +00:00
Mike Pritchard
0a0869f618 We don't use the "pseudo-device" configuration option any longer,
so update the example to use the correct definition.

Add an example for documenting kernel compile options, along with
a small example of how to reference them in the main text of the
man page (I.e. the .Dv macro).

Inspired-by:  a brief exchange I saw in in the commit messages mail
2001-04-05 09:37:55 +00:00
Dima Dorfman
25d0cc3b4d Make it clear that commands within labels must be indented to be
recognized.

PR:		26293
Reviewed by:	brian
2001-04-05 01:25:42 +00:00
David E. O'Brien
5aa865141c Use -r rather than -R to get "reasonable permissions and ownership". 2001-03-31 18:38:05 +00:00
Jeroen Ruigrok van der Werven
d8edf8110a Change NO_MAKEDEV to a finer granularity method:
NO_MAKEDEV_INSTALL and NO_MAKEDEV_RUN.  The former implying the latter.
The names imply what they do.  The last commit by DES based on a PR defeated
the original idea behind NO_MAKEDEV, which was not to run MAKEDEV, but to do
the installation of MAKEDEV.  This should satisfy both parties on the MAKEDEV
challenge.
2001-03-29 14:03:07 +00:00
Satoshi Asami
b44318d3c2 Add new categories science and ukrainian. 2001-03-24 21:52:25 +00:00
Murray Stokely
5e30415625 Add a commented out entry for compat4x
PR:		25196
Submitted by:	Chris Knight <chris@aims.com.au>
2001-03-14 11:30:57 +00:00
Kris Kennaway
5ca7924a91 Use CPUTYPE to add appropriate compiler flags to COPTFLAGS for kernel
builds.  This may be disabled using the NO_CPU_COPTFLAGS variable.

Reviewed by:	arch
2001-03-12 07:47:09 +00:00
Bill Fumerola
02aa3ed484 fix spelling errors, clarify comment, add $FreeBSD$ 2001-03-10 05:28:46 +00:00
Gregory Neil Shapiro
332ca08080 Use the correct path to the SASL .h files as installed by the SASL port.
MFC candidate.

Submitted by:	jeh
2001-03-10 00:31:07 +00:00
Gregory Neil Shapiro
6b81e27f98 Use a different example to avoid confusion 2001-03-06 02:06:02 +00:00
Assar Westerlund
7a00c25671 remove warning of experimental nature of heimdal. it's now the same
version as the one in ports (and the latest at that), except that not
all programs that are in the port get built
2001-03-05 18:54:27 +00:00
Poul-Henning Kamp
c6827cd5d0 Give the shoe-laces a distinct color so they don't disappear on b/w
daemons.
2001-03-04 09:13:17 +00:00
Kris Kennaway
6a251185af Correct the comment above MAKE_IDEA to be less confusing now that we
only have one patented algorithm in make.conf.
2001-03-04 03:14:27 +00:00
Matt Jacob
633252a4e2 include paths.h for _PATH_DEV 2001-03-03 21:23:31 +00:00
Kris Kennaway
181b6941c7 Add definitions and support for the AMD k6-2, Pentium MMX (i586/MMX),
and Pentium II, III and IV processors (p2, p3, p4), as well as 'mmx' and
'3dnow' MACHINE_CPU tags as appropriate.  In the near future this will
be used to control various ports which have MMX/3dNow optimizations,
instead of the ad-hoc methods currently used.

Reviewed by:    peter
2001-02-27 11:21:47 +00:00
Jeroen Ruigrok van der Werven
f9eec60e72 Short lived fame for -Wundef.
Second thoughts by:	bde
2001-02-27 10:16:56 +00:00
Jeroen Ruigrok van der Werven
e18f542dc0 Add -Wundef to BDECFLAGS:
Warn if an undefined identifier is evaluated in an `#if' directive.

Not objected to by:	bde
2001-02-27 09:03:55 +00:00
Ruslan Ermilov
588a200ce1 .St -ansiC -> .St -isoC 2001-02-26 13:23:47 +00:00
Kris Kennaway
247b759d92 Update the list of OpenSSL manpages (now contains many more describing
libssl, for example), and hide it behind a make.conf option,
WANT_OPENSSL_MANPAGES, instead of having it commented out.  We still can't
install these by default because of clobbering of a number of system
manpages with the same name, but they're there for people who want them.
2001-02-25 21:42:12 +00:00
Seigo Tanimura
283ea61c54 I thought it was a new CPU :)
s/i585/i586/
2001-02-24 02:59:32 +00:00
Gregory Neil Shapiro
e6c77250ef Need one additional make.conf knob, SENDMAIL_ADDITIONAL_MC to satisfy bug
report.  It allows building multiple .cf files at build time.

PR:		bin/19897
2001-02-22 19:44:16 +00:00
Gregory Neil Shapiro
d1885c41cc Add a note indicating that SENDMAIL_MC should include the path. This is
necessary if you expect to be able to use this setting in both /etc/mail
and etc/sendmail.
2001-02-22 19:34:13 +00:00
Kris Kennaway
62d90fb793 Overhaul the MACHINE_CPU behaviour:
* Rip out MACHINE_CPU stuff from sys.mk and include a new <bsd.cpu.mk>
  after we pull in /etc/make.conf.  We need to do it afterwards so we can
  react to the user setting of the:

* CPUTYPE variable, which contains the CPU type which the user wants to
  optimize for.  For example, if you want your binaries to only run on an
  i686-class machine (or higher), set this to i686.  If you want to support
  running binaries on a variety of CPU generations, set this to the lowest
  common denominator.  Supported values are listed in make.conf.

* bsd.cpu.mk does the expansion of CPUTYPE into MACHINE_CPU using the
  (hopefully) correct unordered list of CPU types which should be used on
  that CPU.  For example, an AMD k6 CPU wants any of the following:
    k6 k5 i586 i486 i386
  This is still an unordered list so the client makefile logic is simple -
  client makefiles need to test for the various elements of the set in
  decreasing order of priority using ${MACHINE_CPU:M<foo>}, as before.
  The various MACHINE_CPU lists are believed to be correct, but should be
  checked.

* If NO_CPU_CFLAGS is not defined, add relevant gcc compiler optimization
  settings by default (e.g. -karch=k6 for CPUTYPE=k6, etc).  Release
  builders and developers of third-party software need to make sure not to
  enable CPU-specific optimization when generating code intended to be
  portable.  We probably need to move to an /etc/world.conf to allow the
  optimization stuff to be applied separately to world/kernel and external
  compilations, but it's not any worse a problem than it was before.

* Add coverage for the ia64/itanium MACHINE_ARCH/CPUTYPE.

* Add CPUTYPE support for all of the CPU types supported by FreeBSD and gcc
  (only i386, alpha and ia64 first, since those are the minimally-working
  ports.  Other architecture porters, please feel free to add the relevant
  gunk for your platform).

Reviewed by:    jhb, obrien
2001-02-22 11:14:25 +00:00
Gregory Neil Shapiro
25219d25e6 Add a new make knob, SENDMAIL_MC, which is meant to replace SENDMAIL_CF as
users should be configuring via m4 now.  If set, use m4 to create the .cf
file.  Also, if either SENDMAIL_MC or SENDMAIL_CF is set, 'make install' or
'make distribution' in src/etc/sendmail/ will install the appropriate .cf as
/etc/mail/sendmail.cf.  This fixes some mergemaster problems.

PR:		conf/13016
2001-02-22 04:11:52 +00:00
Kris Kennaway
0937df81ca Introduce support for using OpenSSL ASM optimizations. This is done
through the use of a new build directive, MACHINE_CPU, which contains a
list of the CPU generations/features for which optimizations are desired.
This feature will be extended to cover the ports tree in the future.

Currently OpenSSL provides optimizations for i386, i586 and i686-class
CPUs. Currently it has not been tested on an i386 or i486.

Teach make(1) to provide sensible defaults for MACHINE_CPU if it is not
defined (namely, the lowest common denominator CPU we support for each
architecture).  Currently this is i386 for the i386 architecture and ev4
for the alpha.  sys.mk also sets the variable as a last resort for
consistency with MACHINE_ARCH and bootstrapping from very old versions of
make.

Benchmarks show a significant speed increase even in the i386 case, with
additional improvements for i586 and i686 systems.  For maximum performance
define MACHINE_CPU=i686 i586 i386 in /etc/make.conf.

Based on a patch submitted by:  Mike Silbersack <silby@silby.com>
Reviewed by:    current
2001-02-19 03:59:05 +00:00
Poul-Henning Kamp
3903274f02 Add some FreeBSD logo material to the tree:
"FreeBSD.pfa" - the (postscript) font used to write "FreeBSD".
  "beastie.fig" - a 4.3 BSD style Daemon in vector graphic.
  "beastie.eps" - same converted to encapsulated postscript.
  "poster.sh" - an example how to use this stuff.
  "README" - the full story.
2001-02-17 19:14:42 +00:00
Andrzej Bialecki
04d949605c Unbreak by syncing with changes in <sys/sysctl.h> macros. 2001-02-10 22:36:05 +00:00
Ruslan Ermilov
d0353b836e mdoc(7) police: split punctuation characters + misc fixes. 2001-02-01 16:38:02 +00:00
Warner Losh
6715fca911 o Add cardbus support (use pci attachment for now)
<bde>
o Add comments in some places to clarify some points.
o Don't typedef sc_p.  This isn't usually done in the drivers and may
  cause problems in teh future if C goes the C++ route of requiring
  one and only one definition for each and every type.  Instead use
  the current convetion of expanding struct ${1}_softc * inline needed.
o change some comments to be more style(9)-like.
o Define and use DEV2SOFTC to encapsulate storing/getting softc from a
  dev_t.  This also takes care of the missing cast from the examples.
o Define and use DEVICE2SOFTC, similar to DEV2SOFTC for getting the
  softc from a device_t.
</bde>

We still should have this generate foo_{isa,pci,pccard,cardbus,eisa}.c
and foovar.h from templates of some sort, but I was too lazy to do
that in this commit.  I did document it in the comments, however.

Note: bde-like corrections made with the help of my my portable
plastic bde icon.  Results with the real bde may vary with use.
2000-12-18 21:08:53 +00:00
Ruslan Ermilov
ed40311694 mdoc(7) police: removed history info from the .Os FreeBSD call. 2000-12-14 11:52:05 +00:00
Dag-Erling Smørgrav
7892746ed4 Add a reference to the fetch(3) man page. 2000-12-10 13:24:41 +00:00
David E. O'Brien
1a37aa566b Add `_PATH_DEVZERO'.
Use _PATH_* where where possible.
2000-12-09 09:35:55 +00:00
Brian Somers
81bb1040b1 Add more comments, fix a typo, mention how to do PPPoUDP using encryption
to create a VPN.
2000-12-01 11:52:22 +00:00
Brian Somers
88cd46c4d3 Get rid of that damned ``i4b-L4-i4b_l4_setup_timeout: 975625189: ERROR:
idletime[900]+earlyhup[5] > unitlength[60]!'' message.
2000-11-30 23:08:36 +00:00
Brian Somers
9f361a4b13 Add some comments and $FreeBSD$ 2000-11-30 22:24:51 +00:00
Brian Somers
35ccfc58d8 Update some misleading comments, empty ``set logout'', and add a
comment describing how to take advantage of telcos that give
free phone calls at certain times.
2000-11-30 22:22:09 +00:00
Gregory Neil Shapiro
b6f094a043 Add commentary about shared SASL files versus sendmail compilation.
Submitted by:	Scot W. Hetzel <hetzels@westbend.net>
2000-11-30 05:34:53 +00:00
David E. O'Brien
5e514c64f7 Remove "NODESCRYPTLINKS" it has been superseeded by "passwd_format"
in /etc/login.conf.
2000-11-22 20:37:40 +00:00
Ruslan Ermilov
b92a189eb9 mdoc(7) police: Er macro usage cleanup. 2000-11-22 16:11:48 +00:00
Ben Smithurst
8057e004aa Add a note asking committers to update make.conf.5 when they update this. 2000-11-22 14:11:21 +00:00
Ruslan Ermilov
7c7fb079b9 mdoc(7) police: use the new features of the Nm macro. 2000-11-20 16:52:27 +00:00
Doug Barton
09980f4348 Standardize spelling of "optimization" in comments
PR:		conf/22622
Submitted by:	knu
2000-11-19 20:12:06 +00:00
Julian Elischer
99fcf9836a Slight cleanups after comments from John Hay (Thanks!)
Also add more comments.
2000-11-15 12:05:21 +00:00
Brian Feldman
087815f8bc Disable /usr/bin/ssh being setuid root by default. Let the variable
ENABLE_SUID_SSH being defined reenable it for those that want it.

This follows discussion favoring the change from September.  It
is not usually necessary to be setuid root, possibly less safe,
and less convenient (cannot use $HOSTALIASES, for example).

Submitted by:	jedgar
2000-11-14 04:42:25 +00:00