time problem

fang zhengshu fangzhsh07 at gmail.com
Mon Apr 6 11:22:08 CEST 2009


hi all,
thank you for your help Björn.
I try once again by add
LIBS +=-lc_be_time
there is no error,
but we should add another paramenters:
LIBS += -lc_be_time -lrtc
or there will be other error.
thank you for you attention.!


 2009/4/6 <l4-hackers-request at os.inf.tu-dresden.de>

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> Today's Topics:
>
>   1. Re: Urgent help needed .. for svn revision 444 . it seems to
>      a bug..   please solve as soon as possible. (Bj?rn D?bel)
>   2. Re: Urgent help needed>> please tell us what menu.lst do we
>      need      for     usbhid application (Bj?rn D?bel)
>   3. Re: USB Keyboard and l4con (Alexander Valitov)
>   4. l4ts_free_task() (Marcel Selhorst)
>   5. time problem (fang zhengshu)
>   6. Re: time problem (Bj?rn D?bel)
>   7. Re: l4ts_free_task() (Alexander Boettcher)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 05 Apr 2009 17:24:31 +0200
> From: Bj?rn D?bel <doebel at os.inf.tu-dresden.de>
> To: tapas kundu <tapaskundu1 at gmail.com>,        L4 Hackers
>        <l4-hackers at os.inf.tu-dresden.de>
> Subject: Re: Urgent help needed .. for svn revision 444 . it seems to
>        a bug.. please solve as soon as possible.
> Message-ID: <49D8CD2F.6090205 at os.inf.tu-dresden.de>
> Content-Type: text/plain; charset=windows-1252
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hello,
>
> first of all, please do not double-post.
>
> > root at tapas-laptop:/home/tapas/tudos/l4# gcc --version
>  ^^^^
> There is absolutely no reason to build L4 as root user.
>
> > gcc (Ubuntu 4.3.2-1ubuntu12) 4.3.2
>
> No problem with that. I'm building with the same compiler.
>
> > [..]
> > $svn up dope
>
> Better use the repomgr to checkout DOpE:
> ./repomgr co dope
>
> >  [..]
> >
> > /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4/main.c -o main.o
> > In function ?open?,
> >     inlined from ?l4fprov_file_ext_write_component? at
> > /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4/main.c:117:
> > /usr/include/bits/fcntl2.h:51: error: call to ?__open_missing_mode?
> > declared with attribute error: open with O_CREAT in second argument
> > needs 3 arguments
> > make[5]: *** [main.o] Error 1
> > make[5]: Leaving directory
> >
> `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2'
> > make[4]: ***
> [/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2]
> > Error 2
> > make[4]: Leaving directory
> `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4'
> > make[3]: *** [fprov-l4] Error 2
> > make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples'
> > make[2]: *** [examples] Error 2
> > make[2]: Leaving directory `/home/tapas/tudos/l4/pkg/loader'
> > make[1]: *** [loader.bin] Error 2
> > make[1]: Leaving directory `/home/tapas/tudos/l4/pkg'
> > make: *** [pkg] Error 2
>
> Seems there were some modifications to fprov-l4 recently which may be
> the cause. You can ignore this for now (using your patch) as you won't
> need this program.
>
> > [..]
> >
> >   ... Generating simpleterm.dpi
> > LD_PRELOAD=/home/tapas/5thAprilUserbuild/tool/gendep/libgendep.so
> > GENDEP_TARGET=simpleterm.dpi GENDEP_BINARY=perl
> > /home/tapas/tudos/l4/tool/gen_dopecode/gen_dopecode
> > /home/tapas/tudos/l4/pkg/dope/examples/dopecmd/common/simpleterm.dpe
> >> simpleterm.dpi
> > /bin/bash: /home/tapas/tudos/l4/tool/gen_dopecode/gen_dopecode: No
> > such file or directory
> > make[6]: *** [simpleterm.dpi] Error 127
> > make[6]: Leaving directory
> >
> `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2'
> > make[5]: ***
> [/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2]
> > Error 2
> > make[5]: Leaving directory
> `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4'
> > make[4]: *** [l4] Error 2
> > make[4]: Leaving directory
> `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd'
> > make[3]: *** [dopecmd] Error 2
> > make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples'
> > make[2]: *** [examples] Error 2
> > make[2]: Leaving directory `/home/tapas/tudos/l4/pkg/dope'
> > make[1]: *** [dope.bin] Error 2
> > make[1]: Leaving directory `/home/tapas/tudos/l4/pkg'
> > make: *** [pkg] Error 2
> > root at tapas-laptop:/home/tapas/tudos/l4#
> >
> >
> > This seems to me that some files are not available or deleted from svn
>
> No. It is there. You can manually fix this by going to l4/tool and
> running "svn up gen_dopecode". Otherwise you may use the repomgr to
> checkout DOpE as described above and it will do this automatically.
>
> Cheers,
> Bjoern
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.9 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>
> iEYEARECAAYFAknYzSwACgkQP5ijxgQLUNn7jACdE+fNxfE/JsTosiIyU+DKne86
> of0An26SlHizjHdGXutSCG7b9QYsxfFb
> =khl9
> -----END PGP SIGNATURE-----
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 05 Apr 2009 17:30:52 +0200
> From: Bj?rn D?bel <doebel at os.inf.tu-dresden.de>
> To: tapas kundu <tapaskundu1 at gmail.com>
> Cc: l4-hackers at os.inf.tu-dresden.de
> Subject: Re: Urgent help needed>> please tell us what menu.lst do we
>        need    for     usbhid application
> Message-ID: <49D8CEAC.2020700 at os.inf.tu-dresden.de>
> Content-Type: text/plain; charset=ISO-8859-1
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hello,
>
> again, there is no need to double post.
>
> >              We are student of IIT Delhi. We are trying to build a usb
> > webcam application and ext2 file system driver on L4.  We have seen an
> > *application
> > USBHID directory* under L4/pkg downloaded from svn . Could anybody let us
> > know how to use this application. Please also let us know the required
> > menu.lst file to use this application .
>
> >
> >              1) Please also describe required menu.lst file to use dde,
> > dde_linux26, dope, drop,loader together .
>
> You may find our Wiki at http://wiki.tudos.org/Main_Page a useful
> resource for some initial reading.
>
> >              2) Could any body tell us what is the difference between dde
> > and dde_linux26 application found in svn ?
>
> dde_linux26 (combined with linux-26-headers) is the older version which
> is deprecated by the re-implementation found in the dde package.
> However, the L4IDE disk driver you might be interested in, relies on
> this old version.
>
> >              3) Please also tell us how to use these to build an usb
> device
> > driver.
>
> Depending on what you are trying to learn, you can either
> 1) build a Linux USB driver, link it against the DDE/Linux libraries and
> run it on L4, or
> 2) build a L4Env device driver based on DDEKit (l4/pkg/dde/ddekit). The
> interface is slightly different, but if you know how to do things in
> Linux, you'll quickly find that it is basically the same way using DDEKit.
>
> Cheers,
> Bjoern
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.9 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>
> iEYEARECAAYFAknYzpoACgkQP5ijxgQLUNn8ywCgigoFYJV4Hi6vq3pZ3EjU3KZy
> 0zoAoJyC1jJdmVibtwwp4glMTcwVXVeS
> =coST
> -----END PGP SIGNATURE-----
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 5 Apr 2009 08:44:23 -0700 (PDT)
> From: Alexander Valitov <valitov79 at mail.ru>
> To: l4-hackers at os.inf.tu-dresden.de
> Subject: Re: USB Keyboard and l4con
> Message-ID: <22895190.post at talk.nabble.com>
> Content-Type: text/plain; charset=us-ascii
>
>
> Hi, Adam
>
> > On Wed Apr 01, 2009 at 01:11:28 -0700, Alexander Valitov wrote:
> > > I've got the problem. l4con doesn't work with USB keyboard.
> > > It occurs with L4linux+l4con and even with simple txtmode con
> > applications.
> > > "USB legacy support" is turned on.
> > > Here is how l4con complains:
> > >
> > > C.05:con     | atkbd.c: Unknown key pressed (translated set 2, code
> 0x66
> > on
> > is
> > > a0060/
> > >   C.05:con     : serio0).
> > >   C.05:con     | atkbd.c: Use 'setkeycodes 66 <keycode>' to make it
> > known.
> > >   C.05:con     | atkbd.c: Unknown key pressed (translated set 2, code
> > 0x66
> > > on is
> > > a0060/
> >
> > Doesn't work at all or just when you press some (specific) key(s)?
>
> When a application have started and is waiting for your input there are no
> error messages. But if a first (ANY) key is pressed then the application
> goes
> mad and errors as above appear at log.
>
> E.g.: I've booted the L4Linux and am going to input login name. I'm
> pressing
> 'r' which is first for 'root' and get something like this:
> rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr (lots of 'r'
> following by CR)
>
> Best Regards,
>  Alexander Valitov
> --
> View this message in context:
> http://www.nabble.com/USB-Keyboard-and-l4con-tp22821747p22895190.html
> Sent from the L4 mailing list archive at Nabble.com.
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 05 Apr 2009 14:41:12 +0200
> From: Marcel Selhorst <m.selhorst at sirrix.com>
> To: "l4-hackers at os.inf.tu-dresden.de"
>        <l4-hackers at os.inf.tu-dresden.de>
> Subject: l4ts_free_task()
> Message-ID: <49D8A6E8.6090001 at sirrix.com>
> Content-Type: text/plain; charset=ISO-8859-15
>
> Hi List,
>
> I have another question regarding L4Linux and IPC.
> Whenever I perform IPC-communication, I get the following debug output:
>
> l4lx| l4ts_free_task(): Could not return task.
>
> This message is repeated twice on every IPC-call.
> What is the cause of this and how do I get rid of this? ;)
>
> Thanks in advance!
> Marcel Selhorst
> --
> Sirrix AG security technologies - http://www.sirrix.com
> Marcel Selhorst      eMail: m.selhorst at sirrix.com
> Tel +49(234) 61 0071-199    Fax +49(234) 61 0071-599
> get my public key from keyserver, key id: 0x7C9821CC
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>
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>
> ------------------------------
>
> Message: 5
> Date: Mon, 6 Apr 2009 12:16:21 +0800
> From: fang zhengshu <fangzhsh07 at gmail.com>
> To: send_question <l4-hackers at os.inf.tu-dresden.de>
> Subject: time problem
> Message-ID:
>        <a73d246f0904052116k2b5d4640q3d66bf1a6ea2c554 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> hi all,
> I write a simple test example about time function.but when I use the
> "time()" function,the code can not be compiled correctly.
> I just have include the <time.h>,any question?
> the error I put following:
> l4 at 192:~/tudos/l4/pkg/test_fifo/examples/client$ make
> PWD=/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2
> make  -C
> /home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2
> -f Makefile
> make[1]: Entering directory
> `/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2'
>  ... Compiling main.o
>  LD_PRELOAD=/home/l4/tudos/build/tool/gendep/libgendep.so
> GENDEP_TARGET=main.o GENDEP_BINARY=cc1   gcc -m32 -c     -DUSE_UCLIBC=y
> -DRAM_BASE=0x0    -DSYSTEM_x86_586_l4v2 -DARCH_x86 -DCPUTYPE_586
> -DL4API_l4v2 -DCONFIG_L4_CALL_SYSCALLS -DCONFIG_L4_ABS_SYSCALLS
> -I/home/l4/tudos/build/pkg/test_fifo/idl/OBJ-x86-l4v2
> -I/home/l4/tudos/build/include/x86/l4v2 -I/home/l4/tudos/build/include/l4v2
> -I/home/l4/tudos/build/include/x86 -I/home/l4/tudos/build/include
> -I/home/l4/tudos/l4/../dice/include -I/home/drops/include/x86/l4v2
> -I/home/drops/include/l4v2 -I/home/drops/include/x86 -I/home/drops/include
> -nostdinc -I/home/l4/tudos/build/include/x86/uclibc
> -I/home/l4/tudos/build/include/uclibc
> -I/home/l4/tudos/build/include/uclibc++ -I/home/drops/include/x86/uclibc
> -I/home/drops/include/uclibc -I/home/drops/include/uclibc++
> -I/usr/lib/gcc/i486-linux-gnu/4.2.4/include
> -I/usr/lib/gcc/i486-linux-gnu/4.2.4/include-fixed -gstabs+      -g -O2
> -fno-strict-aliasing  -march=i586 -Wall -Wstrict-prototypes
> -Wmissing-prototypes -Wmissing-declarations  -fno-common
> -fno-stack-protector /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c
> -o main.o
>    ==> Linking test_fifo-client
>    LD_PRELOAD=/home/l4/tudos/build/tool/gendep/libgendep.so
> GENDEP_TARGET=test_fifo-client GENDEP_BINARY=ld  GENDEP_BINARY_ALT1=ld ld
> -m
> elf_i386 -o test_fifo-client /home/l4/tudos/build/lib/x86_586/crt0.o main.o
> test-client.o -Ttext=0x1100000 --hash-style=sysv
> -L/home/l4/tudos/build/lib/x86_586/l4v2 -L/home/l4/tudos/build/lib/x86_586
> -L/home/l4/tudos/build/lib -L/home/drops/lib/x86_586/l4v2
> -L/home/drops/lib/x86_586 -L/home/drops/lib
> -T/home/l4/tudos/build/lib/x86_586/main_stat.ld   -static -lgeneric_ts
> -ll4env -ll4rm -ldm_generic -ldm_mem -lthread -lsemaphore
> -llogserver_capsule -lnames -ll4util_root -ll4util -lsigma0 -lroot -ll4env
> -ll4env_err -ll4rm -ldm_generic -ldm_mem -lthread -lslab -ll4sys -nostdlib
> -luc_c -luclibc_support -u mmap_anon -lc_be_simple_mem -lc_be_mmap
> -lc_be_mmap_util -lc_be_l4env_start_stop -lc_be_minimal_log_io
> -luc_be_simple_sleep -ll4env -llogserver_capsule -ll4rm -ldm_generic
> -ldm_mem -lthread -lgeneric_ts -luc_c
> /usr/lib/gcc/i486-linux-gnu/4.2.4/libgcc.a -luc_c -ll4sys -Ttext=0x1100000
> --warn-common -gc-sections
>    main.o: In function `main':
>    /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:36: undefined
> reference to `time'
>    /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:40: undefined
> reference to `time'
>    /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:36: undefined
> reference to `time'
>    make[1]: *** [test_fifo-client] Error 1
>    make[1]: Leaving directory
> `/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2'
>    make: ***
> [/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2] Error
> 2
>
>
> I have search the same error in l4-hackers ,someone suggest use rtc
> server,I
> think it's a good idea.but I have found that the time() function  in
> time.h,why the error will happen?
> The reason I just include time.h?
>
> Thank you!
>
> --
> fang,
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> ------------------------------
>
> Message: 6
> Date: Mon, 06 Apr 2009 09:01:30 +0200
> From: Bj?rn D?bel <doebel at os.inf.tu-dresden.de>
> To: fang zhengshu <fangzhsh07 at gmail.com>
> Cc: L4 Hackers <l4-hackers at os.inf.tu-dresden.de>
> Subject: Re: time problem
> Message-ID: <49D9A8CA.6050500 at os.inf.tu-dresden.de>
> Content-Type: text/plain; charset=ISO-8859-1
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hello,
>
> > I write a simple test example about time function.but when I use the
> > "time()" function,the code can not be compiled correctly.
> > I just have include the <time.h>,any question?
>
> Not quite correct. Including <time.h> only pulls the _declaration_ of
> the time() function into your program. In order to actually use it, you
> also need to have a _definition_ of this function available.
>
> As your local C text book will tell you, there are two ways of getting
> the definition of a function:
> 1) implement it in your code
> 2) link your program with a library providing this function
>
> > the error I put following:
> > l4 at 192:~/tudos/l4/pkg/test_fifo/examples/client$ make
> > PWD=/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2
> > make  -C
> /home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2
> > -f Makefile
> > make[1]: Entering directory
> > `/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2'
> >   ... Compiling main.o
> >   LD_PRELOAD=/home/l4/tudos/build/tool/gendep/libgendep.so
> > GENDEP_TARGET=main.o GENDEP_BINARY=cc1   gcc -m32 -c     -DUSE_UCLIBC=y
> > -DRAM_BASE=0x0    -DSYSTEM_x86_586_l4v2 -DARCH_x86 -DCPUTYPE_586
> > -DL4API_l4v2 -DCONFIG_L4_CALL_SYSCALLS -DCONFIG_L4_ABS_SYSCALLS
> > -I/home/l4/tudos/build/pkg/test_fifo/idl/OBJ-x86-l4v2
> > -I/home/l4/tudos/build/include/x86/l4v2
> -I/home/l4/tudos/build/include/l4v2
> > -I/home/l4/tudos/build/include/x86 -I/home/l4/tudos/build/include
> > -I/home/l4/tudos/l4/../dice/include -I/home/drops/include/x86/l4v2
> > -I/home/drops/include/l4v2 -I/home/drops/include/x86
> -I/home/drops/include
> > -nostdinc -I/home/l4/tudos/build/include/x86/uclibc
> > -I/home/l4/tudos/build/include/uclibc
> > -I/home/l4/tudos/build/include/uclibc++ -I/home/drops/include/x86/uclibc
> > -I/home/drops/include/uclibc -I/home/drops/include/uclibc++
> > -I/usr/lib/gcc/i486-linux-gnu/4.2.4/include
> > -I/usr/lib/gcc/i486-linux-gnu/4.2.4/include-fixed -gstabs+      -g -O2
> > -fno-strict-aliasing  -march=i586 -Wall -Wstrict-prototypes
> > -Wmissing-prototypes -Wmissing-declarations  -fno-common
> > -fno-stack-protector
> /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c
> > -o main.o
> >     ==> Linking test_fifo-client
> >     LD_PRELOAD=/home/l4/tudos/build/tool/gendep/libgendep.so
> > GENDEP_TARGET=test_fifo-client GENDEP_BINARY=ld  GENDEP_BINARY_ALT1=ld ld
> -m
> > elf_i386 -o test_fifo-client /home/l4/tudos/build/lib/x86_586/crt0.o
> main.o
> > test-client.o -Ttext=0x1100000 --hash-style=sysv
> > -L/home/l4/tudos/build/lib/x86_586/l4v2
> -L/home/l4/tudos/build/lib/x86_586
> > -L/home/l4/tudos/build/lib -L/home/drops/lib/x86_586/l4v2
> > -L/home/drops/lib/x86_586 -L/home/drops/lib
> > -T/home/l4/tudos/build/lib/x86_586/main_stat.ld   -static -lgeneric_ts
> > -ll4env -ll4rm -ldm_generic -ldm_mem -lthread -lsemaphore
> > -llogserver_capsule -lnames -ll4util_root -ll4util -lsigma0 -lroot
> -ll4env
> > -ll4env_err -ll4rm -ldm_generic -ldm_mem -lthread -lslab -ll4sys
> -nostdlib
> > -luc_c -luclibc_support -u mmap_anon -lc_be_simple_mem -lc_be_mmap
> > -lc_be_mmap_util -lc_be_l4env_start_stop -lc_be_minimal_log_io
> > -luc_be_simple_sleep -ll4env -llogserver_capsule -ll4rm -ldm_generic
> > -ldm_mem -lthread -lgeneric_ts -luc_c
> > /usr/lib/gcc/i486-linux-gnu/4.2.4/libgcc.a -luc_c -ll4sys
> -Ttext=0x1100000
> > --warn-common -gc-sections
> >     main.o: In function `main':
> >     /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:36: undefined
> > reference to `time'
> >     /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:40: undefined
> > reference to `time'
> >     /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:36: undefined
> > reference to `time'
>
> This is what the linker is telling you here: I cannot find a definition
> of time(), but i desparately need one.
>
> > [..]
> >
> > I have search the same error in l4-hackers ,someone suggest use rtc
> server,I
> > think it's a good idea.but I have found that the time() function  in
> > time.h,why the error will happen?
> > The reason I just include time.h?
>
> Indeed, the time() function is provided by libc_be_time, which comes as
> part of the rtc package. So what you need to do is add
>
> LIBS += -lc_be_time
>
> to your Makefile.
>
> Cheers,
> Bjoern
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> =oqIX
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>
>
> ------------------------------
>
> Message: 7
> Date: Mon, 06 Apr 2009 09:48:09 +0200
> From: Alexander Boettcher <boettcher at os.inf.tu-dresden.de>
> To: L4 Hackers <l4-hackers at os.inf.tu-dresden.de>
> Subject: Re: l4ts_free_task()
> Message-ID: <49D9B3B9.4060701 at os.inf.tu-dresden.de>
> Content-Type: text/plain; charset="iso-8859-15"
>
>
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> Subject: Re: l4ts_free_task()
> Date: Mon, 06 Apr 2009 09:42:21 +0200
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>
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>
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> End of l4-hackers Digest, Vol 72, Issue 7
> *****************************************
>



-- 
fang,
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