Linux-Development-Sys Digest #638, Volume #6 Tue, 20 Apr 99 15:14:52 EDT
Contents:
Re: NFSD-Bug on Solaris with Linux clients. (Part II) (Leslie Mikesell)
saving program state with core files (dementen)
newdie: compiling shared libs ("MV Communications")
Re: Building pgcc-1.1.2 (Krzysztof Strasburger)
Re: Waiting for Red Hat 6.0 (Nix)
pthreads: Need help setting realtime priority! ("Udo Giacomozzi")
Re: 2.2 kernel, diskless clients, chicken/egg problem ? (Fred Jolly)
Re: Threads (Thomas Strohm)
Re: Scheduling for user-level threads (Shaun Cloherty)
Development guide for HP CRet & PhotoRetII (Anders Staehr)
Re: saving program state with core files (Robert Wuest)
Re: newdie: compiling shared libs (Christopher Mahmood)
Re: Kernel Problem (Signal 11) (Sylvain Giroudon)
Diferences to other UNIXes (Thomas Pfrengle)
Getting physically contiguous memory ? ("Thomas Bretthauer")
compiling glibc2 (Ulrich Eckhardt)
About jiffies ("new.ccu.edu.tw")
ncurses: detecting ALT key?? ("Dan Miller")
Monitor directory changes? (Sam Solon)
HP Kayak XW ("Alex Balboa (HPTi|crimmins) " <[EMAIL PROTECTED]>)
Re: "Permission denied" ("Bill Zimmerly")
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Leslie Mikesell)
Subject: Re: NFSD-Bug on Solaris with Linux clients. (Part II)
Date: 19 Apr 1999 11:24:52 -0500
In article <[EMAIL PROTECTED]>,
Oliver Stahlhut <[EMAIL PROTECTED]> wrote:
>
>A few weeks ago i posted to this newsgroup complaining about Linux NFS
>problems with Solaris NFS servers (truncated files while writing to the
>server, etc). It turned out that the problems weren't related to the
>Linux side but to the SUN Servers (thanx Linus ;) ... well I got the
>patches for SUN and they solved the problem (patched
>/kernel/misc/nfssrv).
Does this same bug exist in all the other non-linux nfs versions?
Freebsd clients don't work against an unpatched 2.2.5, at least.
The knfsd and patches at:
ftp://ftp.varesearch.com/pub/support/hjl/knfsd/
seem to fix things.
Les Mikesell
[EMAIL PROTECTED]
------------------------------
From: dementen <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc,comp.os.linux.development.apps
Subject: saving program state with core files
Date: Tue, 20 Apr 1999 12:33:48 +0200
Hi,
I want to be able to save the state of a program (like a game for
example) during its running and after to be able to load this state to
continue the process at another time.
I've tried with xxgdb 'name of the program' and then interrupting the
execution but I don't know how to write the core file when the process
is interrupted (it's not a beautiful way of doing what I want but it
should be ok).
Thanks for the answer or for another idea.
Sebastien de Menten
PS : reply to [EMAIL PROTECTED]
------------------------------
From: "MV Communications" <[EMAIL PROTECTED]>
Subject: newdie: compiling shared libs
Date: Mon, 19 Apr 1999 12:41:22 -0400
Newbie Question: I installed RH 5.2 and have upgraded the kerenel to 2.2.4
(along with assorted needs for it). I am trying to compile and install new
libs (gtk, glib, and glibc 2.1.1pre1). The problem is that i cant seem to
compile (or link ?) shared libs (or either the static links are not setup
properly). The /lib and /usr/lib have both shared and static libs in them,
and some of my binaries need the shared libs. Also, since installing gtk and
glib, my gnome apps dont work anymore (ie: linuxconf).
Any idea what i am doing wrong? Is there a site that has some info on it
that might pertain?
Thanks,
Dave
------------------------------
From: Krzysztof Strasburger <[EMAIL PROTECTED]>
Subject: Re: Building pgcc-1.1.2
Date: 20 Apr 1999 07:07:31 GMT
Mark Brown <[EMAIL PROTECTED]> wrote:
>
>PGCC 1.1.2 is broken - AFAIK nobody has managed to bootstrap it. If
>anyone has, they should speak up about it as there are a whole bunch
>of people who want to know about it. It will build, but the fact that
>it can't compile itself puts a question mark on the quality of
>binaries built using it.
I compiled it with the old gcc (2.7.2.3). I didn't build stagex compilers.
It works for me. The fast-math bug seems to be fixed in 1.1.2.
>
>Try PGCC 1.1.1 or current CVS if you want to use PGCC.
It was almost unusable for me due to the fast-math bug. Any larger FPU
intensive program had to be tested after compilation. In most cases
errors were found. So, i find 1.1.2 much better than 1.1.1. Maybe the
reason is the difference between my code (mostly f2c translated FORTRAN)
and the code used in the internals of the compiler. I simply don't notice
the bugs, because they appear for constructions, which are not present
in my programs.
Krzysztof
------------------------------
From: Nix <$}xinix{[email protected]>
Crossposted-To: comp.os.linux.networking
Subject: Re: Waiting for Red Hat 6.0
Date: 19 Apr 1999 07:57:43 +0100
Frank Sweetser <[EMAIL PROTECTED]> writes:
> "folkert meeuw" <[EMAIL PROTECTED]> writes:
>
> > A month ago I updated to the Kernel Source 2.1.43.
> ^^^^^^
>
> ummm.... you *do* realize that not only is this an old beta version, but
> this was right around the time that the filesystem rewrite actually could
> cause filesystem corruption?
That was 2.1.44 ;)
--
`The purpose of a windowing system is to put some amusing
fluff around your one almighty emacs window.' -- Mark on gnu.emacs.help
------------------------------
From: "Udo Giacomozzi" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.development.apps,comp.programming.threads
Subject: pthreads: Need help setting realtime priority!
Date: Mon, 19 Apr 1999 18:16:18 +0200
Hi!
I urgently need help to solve a problem with LinuxThreads.
I made a program that creates a thread (that for now does just wait) using
the pthread library. So far, so good. The problem is I can't set realtime
priority to the thread.
The program is written in Pascal, but the pthread calls are just the same. I
can give you the source code and/or executable if you want, but let me
explain in words how I set the priority:
- First I prepare a pthread_attr_t using pthread_attr_init().
- Then I set the scheduling policy SCHED_FIFO (should be the constant 1)
with pthread_attr_setschedpolicy.
- Next I set the priority level to 90 using pthread_attr_setschedparam().
- I can now check the settings using pthread_attr_getschedpolicy() and
pthread_attr_getschedparam() and they return the right values (SCHED_FIFO,
priority 90)
- Ok, now I create the thread using pthread_create(). I think the C syntax
would be like this:
pthread_create(&ThreadID, &thread_attr, Thread_Start_Routine, null)
Good. No problems so far. No function returns any error and the thread is
created successfully.
- Now I check again the thread status, but using
pthread_getschedparam(ThreadID, &policy, &sched_level) this time. And this
function returns SCHED_OTHER with priority 0 !!!
I can't understand why this is so because *never* a function returns an
error (but it does so when I set a invalid scheduling policy).
Note it doesnt change whether I'm logged in as root or not.
Anyone has a idea what I should do??
Thanks in advance!!!!
Udo Giacomozzi
F'up to comp.os.linux.development.apps
--
* Email: [EMAIL PROTECTED]
* UIN: 17745247 (@pager.mirabilis.com)
------------------------------
From: Fred Jolly <[EMAIL PROTECTED]>
Subject: Re: 2.2 kernel, diskless clients, chicken/egg problem ?
Date: Mon, 19 Apr 1999 18:06:54 +0200
Nils Ulltveit-Moe wrote :
> Have anyone managed to make NFS-root work on diskless clients running
> a 2.2 kernel?
[snip ...]
>Looking up port of RPC 100003/2 on 193.180.211.70
> RPC: sendmsg returned error 101
I've the same problem.
My configuration : a cyrix pr200+ as nfs server and a diskless 486, both
running 2.2.5 kernel, with both a Ne2000 compatible network card.
I success in mounting the root FS (without the patch you give in your
mail), but when I want to mount the others directories via NFS with
'mount -a' I've the same error: "RPC: sendmsg return error 101".
It seems it is a frequent problem with 2.1.x and 2.2.x kernels, but I
couldn't find any solution.
Do you know what to do ?
Thanks.
Fred.
------------------------------
From: Thomas Strohm <[EMAIL PROTECTED]>
Subject: Re: Threads
Date: Mon, 19 Apr 1999 20:24:23 +0200
K Prabhakaran wrote:
> LinuxThreads
> In this for every threads it is creating a process(not really), like
> when i do a "ps" command it shows all the threads i created as a process.
> Why it is?
This is how LinuxThreads are implemented. A new thread is created
basically
by a clone(2) system call which is very similar to fork(2). For
clone(2), the
child process (thread) shares the memory pages with the parent. For
fork(2),
they are copy-on-write, that is, they are shared until one of the
processes
writes to them. Then they are copied, and the parent and the child have
different
memory pages.
If you do 'ps', you see the threads, because they are like different
processes
sharing their memory pages.
Thomas.
------------------------------
From: Shaun Cloherty <[EMAIL PROTECTED]>
Subject: Re: Scheduling for user-level threads
Date: Tue, 20 Apr 1999 18:18:59 +1000
Byron A Jeff wrote:
> I wrote a 3 page white paper on how to instrument the kernel to solve the
> problem.
Got a URL for that white paper? orWas it published anywhere where I can read it?
Shaun
------------------------------
Date: Tue, 20 Apr 1999 10:50:17 +0200
From: Anders Staehr <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.ms-windows.programmer.drivers,comp.os.linux.misc,comp.os.linux.development.apps
Subject: Development guide for HP CRet & PhotoRetII
Has anyone tried to develop a driver for the HP DeskJet 890, 1100 or
1120 printers utilizing the HP proprietary CRet or PhotoRetII mode, and
where did you find the necessary information?
We have the "HP DeskJet 1120C Software Developer's PCL guide", the "HP
DeskJet 1100C Software Developer's Guide for Windows" and the "HP
DeskJet 1100C Software Developer's PCL Guide", but they are of little
help (if you want the best print quality from these printers!), as HP
says they have an internal "PCL encyclopedia" which is really meant for
HP internal use only! Has anyone found that one on the Net?
thanks, Anders
------------------------------
From: Robert Wuest <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc,comp.os.linux.development.apps
Subject: Re: saving program state with core files
Date: Tue, 20 Apr 1999 12:31:03 +0000
dementen wrote:
>
> Hi,
>
> I want to be able to save the state of a program (like a game for
> example) during its running and after to be able to load this state to
> continue the process at another time.
>
> I've tried with xxgdb 'name of the program' and then interrupting the
> execution but I don't know how to write the core file when the process
> is interrupted (it's not a beautiful way of doing what I want but it
> should be ok).
>
> Thanks for the answer or for another idea.
>
> Sebastien de Menten
>
> PS : reply to [EMAIL PROTECTED]
I think trying to use core files to save a program's state is a real bad
idea.
I don't know how to resume from a dumped core file, but making one is
real easy :-)
char c;
c=*(char*)0;
will do it.
Robert
------------------------------
From: Christopher Mahmood <[EMAIL PROTECTED]>
Subject: Re: newdie: compiling shared libs
Date: 19 Apr 1999 10:53:50 -0700
did you update the ld table in /etc? see 'man ldconfig'.
-ckm
------------------------------
From: Sylvain Giroudon <[EMAIL PROTECTED]>
Subject: Re: Kernel Problem (Signal 11)
Date: Tue, 20 Apr 1999 14:08:40 +0200
Hello,
Catching signal 11 while compiling with GCC may be a memory access hardware
problem.
Take a look at the FAQ named GCC-SIG11-FAQ (probably in directory
/usr/doc/FAQ/txt,
depending on the distribution you have).
Sylvain
Koh wrote:
>
> Hi all,
>
> This is what I got when I do "make boot" command
>
> gcc -D__KERNEL__ -I/usr/src/linux-2.0.32/include -Wall
> -Wstrict-prototypes
> -02 -fomit-frame-pointer -fno-strength-reduce -pipe -m486 -malign-loop=2
>
> -malign-jumps=2 -malign-functions=2 -DCPU=586 -c -o exec_domain.o
> exec_domain.c
> gcc: Internal compiler error: program cc1 got fatal signal 11
> make[2]: *** [exec_domain.o] Error1
> make[2]: leaving directory '/usr/src/linux-2.0.32/kernel'
> make[1]: *** [first_rule] Error 2
> make[1]: Leaving directory '/usr/src/linux-2.0.32/kernel'
> make *** [linuxsubdirs] Error 2
>
> Anybody with any hints, please help... THANKS...
>
> P/S: May I know where I can get a list of error messages on compiling
> Linux kernel?
>
> KOH.
------------------------------
From: Thomas Pfrengle <[EMAIL PROTECTED]>
Subject: Diferences to other UNIXes
Date: Mon, 19 Apr 1999 19:20:34 +0200
Hi,
I should do some development for a SGI. As a SGI is too expensive for
us, we thought to do the development on LINUX and do the integration on
SGI.
Can anybody tell me, if I have to exspect problems. Especially, does
LINUX support shared memory-IPC ??
Thanks for your help.
Please send answers also as email: [EMAIL PROTECTED]
------------------------------
From: "Thomas Bretthauer" <Thomas [EMAIL PROTECTED]>
Subject: Getting physically contiguous memory ?
Date: Tue, 20 Apr 1999 15:41:05 +0200
Hi,
For writing a flash device under linux a device driver must be able to
allocate physically contiguous memory of about 2MB.
I've recognized a patch for the 2.0.30 kernel from Matt Welsh
(bigphysarea-2_0_30.tar.gz) but I use kernel 2.2.4 and don't want to patch a
kernel rather than using some kind of API (for those of you who are familiar
in writing drivers for Windows NT, I'm searching an equivalent for
MMAllocateContiguousMemory).
Any hints and help is welcome,
Thomas
------------------------------
From: Ulrich Eckhardt <[EMAIL PROTECTED]>
Subject: compiling glibc2
Date: 20 Apr 1999 13:17:07 GMT
Hi,
i try to compile glibc-2.0.7pre6 using also glibc-crypt-970829,
glibc-linuxthreads-2.0.112, gcc 2.7.2.3 Kernel 2.2.5 .
But i get the following errors during compilation :
../linuxthreads/sysdeps/pthread/bits/pthreadtypes.h:41: field
`__schedparam' has incomplete type
In file included from /usr/include/stdio-lock.h:20,
from ../libio/libio.h:156,
from ../libio/stdio.h:29,
from ../stdio.h:2,
from ../sysdeps/posix/ctermid.c:20:
../linuxthreads/sysdeps/pthread/pthread.h:110: warning: no semicolon at
end of struct or union
../linuxthreads/sysdeps/pthread/pthread.h:110: parse error before
`__PMT'
../linuxthreads/sysdeps/pthread/pthread.h:114: parse error before `}'
make[1]: *** [ctermid.o] Error 1
make[1]: Leaving directory `/usr/src/glibc-2.0.7pre6/stdio-common'
make: *** [stdio-common/subdir_lib] Error 2
Do i have the correct and latest versions of glibc and linuxthreads ?
I have it from kernel.org. On ftp.gnu.org i have only found
glibc-2.0.6 , so i am a bit confused which is the correct version
of glibc and linux threads.
Uli
--
Ulrich Eckhardt Tr@nscom GbR
http://people.frankfurt.netsurf.de/uli http://www.transcom.de
Lagerstra�e 11-15 A8
64807 Dieburg Germany
------------------------------
From: "new.ccu.edu.tw" <[EMAIL PROTECTED]>
Subject: About jiffies
Date: Tue, 20 Apr 1999 22:41:56 +0800
Hi,
I'm reading one book about Linux Kernel, and it said that the
constant
HZ (<linux/param.h>) determines the frequency of timer interrupt. When
timer interrupt occurs, the handler will increment the variable,
jiffies.
I heard before that 18.2 ticks equal to 1 sec. But the default value of
HZ in Linux on x86 is 100. Why ? Why not 18.2 ??
Best Regards,
J.C. Chuang
------------------------------
From: "Dan Miller" <[EMAIL PROTECTED]>
Subject: ncurses: detecting ALT key??
Date: Mon, 19 Apr 1999 11:51:03 -0700
Is there some way I can detect that the ALT key is pressed?? When I use
getch(), Alt-<key> seems to return the same as <key> in most cases...
I don't see any functions in ncurses for separately testing the state
keys...
???
Dan Miller
------------------------------
From: [EMAIL PROTECTED] (Sam Solon)
Subject: Monitor directory changes?
Date: Tue, 20 Apr 1999 16:58:07 GMT
Is there a (standard) way for a program to monitor a directory for
changes and be notified when a change is made?
=======
Sam Solon
[EMAIL PROTECTED]
Remove "nospam" for email address
------------------------------
Crossposted-To:
comp.os.linux.help,comp.os.linux.setup,comp.os.linux.hardware,comp.os.linux.development.apps,redhat.hardware.arch.intel,alt.os.linux,alt.uu.comp.os.linux.questions,linux.redhat,comp.os.linux.questions,comp.os.linux.networking,alt.linux,aus.computers.linux,comp.os.linux.advocacy,linux.redhat.install,comp.os.linux.x,comp.os.linux.prog,comp.os.linux.m68k
From: "Alex Balboa (HPTi|crimmins) <balboa>" <[EMAIL PROTECTED]>
Subject: HP Kayak XW
Date: Mon, 19 Apr 1999 13:53:22 GMT
==============F31446D46B331AF2A87039BD
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
I am currently trying to install Redhat 5.2 Linux on the following
system configuration:
HP Kayak XW Series W3 PC workstation
Running Microsoft Windows NT
4.00.1381
IE 4.0 4.72.3110.8
x86 Family 6 Model 5 Stepping 1
AT/AT compatible
130,476 KB RAM
FastRAID
(using the ArrayConfig utility
and Array 1000 Family Manager driver: Adaptec Array1000 Family Adapter)
The CI/O manager (HP RAID device manager)
IDE mass storage driver: (Intel PIIX PCI Bus Mater IDE Controller)
Symbios SCSI mass storage driver: (Symbios Logic PCI (53c8XX))
Sound Driver: Analog Devices SoundComm Driver
Network Driver: HP Ethernet Family Adapter
Video Driver: HP Visualize Fx4 OpenGL driver (Hewlett-Packard
VisualizeFX Video).
I was wondering if some one has installed Redhat 5.2 Linux on such a
system and, if so,
please advise on any special procedures or drivers that I would need.
Thank you in advance (please forward your replies to the newsgroup and
my email)
Sincerely,
Alex Balboa
--
=====================================================================
Alex Balboa, Ph.D. 939-I Beards Hill Road, Suite 193
High Performance Technologies, Inc. Aberdeen, MD 21001-1734
Integrated Modeling and Testing Phone: 1-410-297-8567
Programming Environment & Training 1-410-278-7536
ARL PET MSRC FAX: 1-410-297-9521
Senior CTA Analyst Email: [EMAIL PROTECTED]
URL: http://www.arl.hpc.mil/PET
=====================================================================
==============F31446D46B331AF2A87039BD
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
I am currently trying to install Redhat 5.2 Linux on the following system
configuration:
<br>HP Kayak XW Series W3 PC workstation
<br>Running Microsoft Windows NT
<br>4.00.1381
<br>IE 4.0 4.72.3110.8
<br>x86 Family 6 Model 5 Stepping 1
<br>AT/AT compatible
<br>130,476 KB RAM
<br>FastRAID
<br>(using the ArrayConfig utility
<br>and Array 1000 Family Manager driver: Adaptec Array1000 Family Adapter)
<br>The CI/O manager (HP RAID device manager)
<br>IDE mass storage driver: (Intel PIIX PCI Bus Mater IDE Controller)
<br>Symbios SCSI mass storage driver: (Symbios Logic PCI (53c8XX))
<br>Sound Driver: Analog Devices SoundComm Driver
<br>Network Driver: HP Ethernet Family Adapter
<br>Video Driver: HP Visualize Fx4 OpenGL driver (Hewlett-Packard VisualizeFX
Video).
<p>I was wondering if some one has installed Redhat 5.2 Linux on such a
system and, if so,
<br>please advise on any special procedures or drivers that I would need.
<br>Thank you in advance (please forward your replies to the newsgroup
and my email)
<br>Sincerely,
<br>Alex Balboa
<br>
<br>
<pre>--
=====================================================================
Alex Balboa,
Ph.D.
939-I Beards Hill Road, Suite 193
High Performance Technologies, Inc. Aberdeen, MD 21001-1734
Integrated Modeling and Testing Phone: 1-410-297-8567
Programming Environment & Training
1-410-278-7536
ARL PET
MSRC
FAX: 1-410-297-9521
Senior CTA
Analyst
Email: [EMAIL PROTECTED]
URL: <a href="http://www.arl.hpc.mil/PET">http://www.arl.hpc.mil/PET
</a>---------------------------------------------------------------------</pre>
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==============F31446D46B331AF2A87039BD==
------------------------------
From: "Bill Zimmerly" <[EMAIL PROTECTED]>
Subject: Re: "Permission denied"
Date: Tue, 20 Apr 1999 09:04:11 -0500
Thank you too Alex, for this timely reply (and the emailed help!).
I guess at this point I can make a *qualified* statement that the community
support of Linux is as rock-solid as the software itself. :-)
- Bill
Alex Rhomberg <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> [snip]> If your machine was hacked, your inetd might be modified. Make
sure that
> you have no Troyan horse there. I suspect even I could modify inetd so I
> can telnet in and get a root shell.
> Check it with rpm or even better, upgrade the system to a new version,
> so the same attack doesn't work again. For this work, I recommend taking
> the machine physically from the net and work at the console.
> Remember that anything that talks to the outside world might be changed
> if the machine was cracked.
>
> - Alex
------------------------------
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End of Linux-Development-System Digest
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