Linux-Development-Sys Digest #453, Volume #6 Fri, 5 Mar 99 03:14:34 EST
Contents:
Any interest in a new POP3 server (Jim Abbey)
Re: Any Insure++ Users? (J.H.M. Dassen (Ray))
Re: gdb problems (Larry Janik)
Re: Problem loading modules with kernel 2.2.2 and modutils 2.1.121 (Chmouel Boudjnah)
Re: Notice on blackdown.org (R)
Re: rtlinux and RedHat 5.2 (2.0.36) (Ed Cogburn)
Re: Overclocking (was: Re: K6-2 and Linux, Are there any Bug?) (Dang H. Nguyen)
Re: Driver Programming (James Bean)
Re: EXT2_UNRM_FL (Peter Samuelson)
Re: Mixed static and dynamic linking (Peter Samuelson)
Re: ethernet dec21143 problems (Peter Samuelson)
Getting access thru Telnet (Kevin Miller)
Re: Overclocking (was: Re: K6-2 and Linux, Are there any Bug?) ("C.R.")
Autotuning of TCP Buffers (Chris Rapier)
Sound Help Please! (Michael Gilfix)
Re: Any Insure++ Users? (Erik de Castro Lopo)
Re: Getting access thru Telnet (Andrew Heckerling)
Re: Linux Virtual Memory trick (Justin Vallon)
Notice on blackdown.org (No One)
Re: SMP Support (Peter Samuelson)
Re: IP to process network interface? (Andi Kleen)
Re: Linux on Mips Wince hardware? (Christopher B. Browne)
----------------------------------------------------------------------------
From: Jim Abbey <[EMAIL PROTECTED]>
Subject: Any interest in a new POP3 server
Date: Thu, 04 Mar 1999 11:53:17 -0500
Is anyone interested in a public domain POP3 server which does the
following:
"Sidelines" long messages so that all the short ones can be downloaded
without being blocked by Powerpoint presentations and the like.
Does not fill up /tmp with work files abandoned when users break their
connections during long downloads.
Uses the same mailbox locking as sendmail and bellmail (i.s. NOT flock)
Reports activity to the command tail in the same way as sendmail so that
a ps -ef can show what is happening.
Creates optional records at various detail levels to syslog and/or a
specific log file.
If I get more than a handful of interested responses, I'll package it
and publish it.
Regards,
Jim Abbey
------------------------------
From: [EMAIL PROTECTED] (J.H.M. Dassen (Ray))
Crossposted-To: comp.os.linux.development.apps
Subject: Re: Any Insure++ Users?
Date: 4 Mar 1999 20:15:04 GMT
Mark Riehl <[EMAIL PROTECTED]> wrote:
>Anyone have any alternatives - either commercial or freeware?
You can find a list of memory allocation debugging tools at
http://www.cs.colorado.edu/homes/zorn/public_html/MallocDebug.html
Unfortunately, it doesn't list
checker http://www.fsf.org/software/checker/checker.html or
ccmalloc http://iseran.ira.uka.de/~armin/ccmalloc/ .
Hope this helped,
Ray
--
LEADERSHIP A form of self-preservation exhibited by people with auto-
destructive imaginations in order to ensure that when it comes to the crunch
it'll be someone else's bones which go crack and not their own.
- The Hipcrime Vocab by Chad C. Mulligan
------------------------------
Date: Wed, 03 Mar 1999 17:40:45 -0800
From: Larry Janik <[EMAIL PROTECTED]>
Reply-To: cinlar, no, [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.development.apps
Subject: Re: gdb problems
I am having the same problem with egcs or gcc compiled programs. gdb tries
to step into the libc code and stops running... I was wondering if this is
perhaps a libc6 problem on RedHat 5.2 as gdb works fine with the same
source on RedHat 4.2 and SUSE 5.3 libc5 systems( libc5).
Larry Janik
[EMAIL PROTECTED]
>
------------------------------
From: Chmouel Boudjnah <[EMAIL PROTECTED]>
Subject: Re: Problem loading modules with kernel 2.2.2 and modutils 2.1.121
Date: 04 Mar 1999 21:32:38 +0100
Mark Sutton <[EMAIL PROTECTED]> writes:
> Actually, I got the RPM from updates.redhat.com. (or maybe it was
> rawhide.redhat.com?) but anyway it was a redhat server. I snarfed
> it two or three weeks ago though, and only now found the time to try
> it, maybe I should look for a newer version from redhat.
You can get a good version for both mandrake and redhat distribution
at :
ftp://linux-mandrake.com/pub/updates/kernel2.2/RPMS/
--
MandrakeSoft http://www.mandrakesoft.com/
Paris, France --Chmouel
------------------------------
From: [EMAIL PROTECTED] (R)
Subject: Re: Notice on blackdown.org
Date: Thu, 04 Mar 1999 22:59:34 GMT
On Thu, 4 Mar 1999 16:17:11 -0500, Richard Payne <paynerattimkendotcom> wrote:
>>| What bug?
>>
>>My guess is that 2.0.X will no longer see any bugfixes aside from major
>>security holes that might be found.
>
>Ummm, no that's not quite right. In fact the 2.0.x series is alive and well.
Uh, not to get back on-topic, but what is the bug and why is it
a problem for the people porting the jdk?
------------------------------
From: Ed Cogburn <[EMAIL PROTECTED]>
Subject: Re: rtlinux and RedHat 5.2 (2.0.36)
Date: Wed, 03 Mar 1999 19:01:08 -0500
[EMAIL PROTECTED] wrote:
>
> All:
>
> I'm new to Linux and I'm trying to install the real time patches
> (www.rtlinux.org) to Linux 2.0.36. This requires adding patches to the kernel
> which I've never done. The recompileing the kernel doesn't seem too bad, but
> the directions detailing how to add the patch are confusing. Any
> tips/help/advice/etc.. about how to do this would be greatly appreciated!
In the kernel source dir, usually /usr/src/linux, run "patch -p1
< patchfile". I might be wrong about the -pX number, though.
--
Ed C.
------------------------------
From: [EMAIL PROTECTED] (Dang H. Nguyen)
Crossposted-To:
alt.os.linux.slackware,comp.os.linux.hardware,comp.os.linux.misc,comp.os.linux.setup
Subject: Re: Overclocking (was: Re: K6-2 and Linux, Are there any Bug?)
Date: Thu, 04 Mar 1999 02:54:31 GMT
Reply-To: [EMAIL PROTECTED]
With the P-II you could block out pin21 on the pcb and unlock the
multiplier to overclock. Perhaps it would work with the P-III. Read
http://www.tomshardware.com/
The P-III is essentially a P-II with SSE. So it makes sense that
blocking out pin21 will work again.
On Wed, 3 Mar 1999 20:41:44 GMT, "Tuomo O. Vuolteenaho"
<[EMAIL PROTECTED]> wrote:
>I don't get this. Doesn't PIII have a fixed multiplier? Doesn't PIII450
>run at 4.5 times the bus speed, and 500 at 5.0 times? How can you get
>them to work? (An honest question.)
>
>On Wed, 3 Mar 1999, David wrote:
>
>> i've had a dual pIII 500 machine that was actualy a pIII 500 and a PIII 450
>> clocked up that ran fine. exactly the same results as a real dual 500.
>> didn't notice the 450 getting any hotter either.
>>
>> David
------------------------------
From: James Bean <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.development,comp.os.linux.questions
Subject: Re: Driver Programming
Date: 4 Mar 1999 02:41:12 GMT
snurf wrote:
>
> Hello all.
> I need to develop a driver for an industrial card but I don't know how do
> it.
> I'm looking for news, example, docs about drivers programming under linux
> S.U.S.E.
> If you know how do it, please share your knowledge.
>
> Thanks to answer to: [EMAIL PROTECTED]
Hi,
I also echo the good remarks about Rubini's book.
Also look at the Linuk Lab Project web site, which has many contributed
drivers. All kinds of good examples, and maybe someone has already
written your driver for you. :-) Look at www.llp.fu-berlin.de
cheers Jim Bean
------------------------------
From: [EMAIL PROTECTED] (Peter Samuelson)
Subject: Re: EXT2_UNRM_FL
Date: 3 Mar 1999 20:31:21 -0600
Reply-To: Peter Samuelson <[EMAIL PROTECTED]>
[ZandiNi <[EMAIL PROTECTED]>]
> I was looking through the ext2 source code, and I found EXE2_UNRM_FL
> which will make the file with this flag undeletable (or recoverable).
> Is this thing ever implemented ? or if this flag works, where is the
> code for it? Thanx in advance.
Hmmmm. First to find the code:
$ find /usr/src/linux -name \*.[chS] | xargs grep EXT2_UNRM_FL
/usr/src/linux/include/linux/ext2_fs.h:#define EXT2_UNRM_FL
0x00000002 /* Undelete */
$
Nope, doesn't look like it's used by the kernel. I think it's a
placeholder, like ext2 ACL support.
--
Peter Samuelson
<sampo.creighton.edu!psamuels>
------------------------------
From: [EMAIL PROTECTED] (Peter Samuelson)
Subject: Re: Mixed static and dynamic linking
Date: 4 Mar 1999 19:08:53 -0600
Reply-To: Peter Samuelson <[EMAIL PROTECTED]>
[CC'd to poster, as per request]
[matevz bradac <[EMAIL PROTECTED]>]
> I would like the binary to be system independent, to be able to run
> it on libc5 as well as glibc2 (thus, static libc linking). But to be
> able to load the 2nd library I'd also need to link the dynamic loader
> statically to my binary (or so I guess).
I'm guessing this would be hard to get to work, if even possible. Say
you want to link to libc and libXpm, and have libc static so you don't
have to have your particular libc on the target machine. But you want
libXpm dynamic to reap the benefits of dynamic linking. (This is your
basic situation, yes?)
The tangle is that libXpm calls malloc() so is linked to libc. So you
have to recompile libXpm for use with libc5 and libc6. So you compile
your app with libc6 and libXpm/libc6 -- will it dynamically link to
someone else's libXpm/libc5? There might be a way to get it to work,
but expect trouble....
> Does anyone have a clue why this might be happening and a solution if
> there is one?
I don't know why you see the symptoms you do, but to diagnose it I
suggest `ldd' (as opposed to `less'). The obvious workaround would be
to compile everything dynamically with libc5 instead of libc6. (In
Debian use the "altgcc" package and associated *-altdev library
packages.) All major distributions support libc5 binaries, even the
libc6-based ones like RH 5 and Debian 2.1.
--
Peter Samuelson
<sampo.creighton.edu!psamuels>
------------------------------
From: [EMAIL PROTECTED] (Peter Samuelson)
Crossposted-To: comp.os.linux.networking
Subject: Re: ethernet dec21143 problems
Date: 3 Mar 1999 21:34:24 -0600
Reply-To: Peter Samuelson <[EMAIL PROTECTED]>
[asdf <[EMAIL PROTECTED]>]
> I'm having problems in getting my network card to work. [...] It's a
> built-in card, it's supposed to be DEC21143 based.
Quoting the Tulip FAQ (http://www.bmen.tulane.edu/~siekas/faq.html):
6. I am having problems with my 21143?
Get the latest driver!
Said driver can be downloaded from Donald's site:
ftp://cesdis.gsfc.nasa.gov/pub/linux/drivers/test/tulip.c
and compiled using the instructions at:
http://www.bmen.tulane.edu/~siekas/build.html
HTH.
--
Peter Samuelson
<sampo.creighton.edu!psamuels>
------------------------------
From: Kevin Miller <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Getting access thru Telnet
Date: Thu, 04 Mar 1999 05:04:54 GMT
Hi everyone,
I know that this is a simple question but I do need help. Can you gain
full access thru Telnet and have the same power as a superuser from that
type of connection? If so, can you please guide me on setting it up.
I can get the account to gain full access right on the server but not
thru Telnet.
Also, why cant I login as root from telnet?
Thanks!!!
Kevin
------------------------------
From: "C.R." <[EMAIL PROTECTED]>
Crossposted-To:
alt.os.linux.slackware,comp.os.linux.hardware,comp.os.linux.misc,comp.os.linux.setup
Subject: Re: Overclocking (was: Re: K6-2 and Linux, Are there any Bug?)
Date: Fri, 05 Mar 1999 02:56:04 GMT
Just raise the voltage to at least 2.3V. If that doesn't work try 2.4V.
My K6-2/350 works PERFECTLY at 400 but, like yours, it won't even boot if I
run it at only the standard 2.2V.
C.R.
Michael Creasy wrote:
> If this is the case can someone tell me why my K6-2 350 when overclocked
> to 400 crashes linux on boot, it has a huge fan on it.
>
> Michael
>
> > Bulls. some chips are meant to beoverclocked - the P2-300 for example,
> > in the last 6 months of it's manufacture, it was made with a P2-350 core
> > hard wired to be 300. you can easily un-wire it (OK , not so easily). or
> > the Celeron 300A which overclocks to 450 w/o a glitch just by changing
> > the FSB speed, or the K6-2 300 which can overclock to 375 w/o additional
> > cooling, or any P5 MMX chips which can usually be overclocked to about
> > 20% more, if you have the right board, w/o needing for extra hardware
> > (coolants) or voltage tweeking. nowdays, you can even overclock
> > HardDisks.
> > Oded
------------------------------
From: Chris Rapier <[EMAIL PROTECTED]>
Subject: Autotuning of TCP Buffers
Date: Thu, 04 Mar 1999 02:09:33 -0500
Just curious if there has been any discussion of the autotuning
modifications developed at PSC and presented at sigcomm 98. I'm
interested because:
a) I work there (but not on this project)
b) Its a really neat way of drastically improving network performance in
some situations which make it a well suited for server
applications(albeit with a memory usage hit)
c) I'd actually like to see it implemented on other platforms
A brief summary:
Even when TCP performance enhancements such as RFC 2018 SACK and RFC
1323 large window extensions are used, a TCP connection may still not
achieve the optimal performance expected by the user. One reason for
suboptimal performance is that the connection may be buffer limited by
the sender or the receiver, particularly for large bandwidth*delay
paths.
Manual configuration eases the problem somewhat, but requires
information that is often not available to the user or system
administrator, and is not flexible enough to account for changes in the
network or the end system. We propose an Automatic TCP Buffer Tuning
scheme to alleviate these problems. It has several main advantages:
* Each connection gets the best possible performance
* It is transparent to the user and the application
* Memory is fairly shared when many connections are in use, allowing a
large number of simultaneous connections for a single host
=========================
Anyway, it might be worth reading the paper that was published
http://www.psc.edu/networking/auto.html
If there is a better group in which to bring this up please let me know.
Chris Rapier
A very tired
Network Programmer
NLANR Engineering Services
------------------------------
From: [EMAIL PROTECTED] (Michael Gilfix)
Subject: Sound Help Please!
Date: 4 Mar 1999 06:58:20 GMT
I've been searching for audiopci drivers for what seems like forever. I
found the drivers for the development version of the kernel (v2.0) but I want
to run the 2.0.36 or 2.0.35 kernel. Unfortunately, I can't seem to find a
patch. This seems baffling. If the drivers are available for the v2.0,
shouldn't there be a patch somewhere? Can anybody help? Thanks..
-- Mike
------------------------------
From: Erik de Castro Lopo <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.development.apps
Subject: Re: Any Insure++ Users?
Date: Thu, 04 Mar 1999 06:00:06 +1100
Mark Riehl wrote:
>
> Guys,
>
> We're looking at purchasing a copy of Insure++ for Linux. It's pretty
> expensive ($2900 per user), we can't get an evaluation copy, and the
> only source of info is the Parasoft web page.
>
> So I'd like to hear from some people who have actually used it. Any
> good or bad experiences?
There was a review of this software in Linux Journal a month or three
back. The reviewer's opinion was very positive and he said the support
was good. I haven't tried it myself.
Erik
--
+-------------------------------------------------+
Erik de Castro Lopo [EMAIL PROTECTED]
+-------------------------------------------------+
Microsoft owns Hotmail. Hotmail runs Sun Solaris on their
servers, not Windows NT. Does NT have problems?
------------------------------
From: Andrew Heckerling <[EMAIL PROTECTED]>
Subject: Re: Getting access thru Telnet
Date: 4 Mar 1999 06:05:31 GMT
Log in as a normal user, and then use su to get root. I don't
know exactly where it's enforced, but usually direct root logins
are only allowed on the virtual consoles. Take a look at
/etc/securetty -- I believe it lists the places root is allowed
to log in. This is a security feature; it prevents people who want
to break in from trying a million different root passwords.
Kevin Miller <[EMAIL PROTECTED]> wrote:
: Hi everyone,
: I know that this is a simple question but I do need help. Can you gain
: full access thru Telnet and have the same power as a superuser from that
: type of connection? If so, can you please guide me on setting it up.
: I can get the account to gain full access right on the server but not
: thru Telnet.
: Also, why cant I login as root from telnet?
: Thanks!!!
: Kevin
------------------------------
From: Justin Vallon <[EMAIL PROTECTED]>
Subject: Re: Linux Virtual Memory trick
Date: 4 Mar 1999 02:33:59 -0500
[EMAIL PROTECTED] writes:
> Is there a way to map two virtual memory addresses to the same physical
> memory under linux? I'd like to make it so two consequtive pages actually
> write to the same memory locations... Anyone know how I might accomplish
> this? I'm assuming it would have to do with using mmap, but how to I get a
> fd that points to an existing memory location?
While I'm no authority on mmap, if you can mmap the first segment,
then re-mmap for the second. That is:
fd = open(...);
range1 = mmap(0, PAGE, ..., ..., fd, 0);
range2 = mmap(range1 + PAGE, PAGE, ..., ..., fd, 0);
close(fd);
--
-Justin
[EMAIL PROTECTED]
------------------------------
From: No One <[EMAIL PROTECTED]>
Subject: Notice on blackdown.org
Date: Thu, 04 Mar 1999 18:24:13 GMT
I was looking at http://www.blackdown.org/java-linux/jck-status.html
today and noticed that the only thing holding up the JDK 1.2 release
is a kernel bug in the 2.0.x series.
What bug?
When it is going to get fixed?
I need my java.
============= Posted via Deja News, The Discussion Network ============
http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own
------------------------------
From: [EMAIL PROTECTED] (Peter Samuelson)
Subject: Re: SMP Support
Date: 3 Mar 1999 20:41:22 -0600
Reply-To: Peter Samuelson <[EMAIL PROTECTED]>
[Michael Hirsch <[EMAIL PROTECTED]>]
> > Is there a command to clear the cache, or do I need to reboot each
> > time?
[Rob Komar <[EMAIL PROTECTED]>]
> I sometimes do this by running some huge job that fills the disk
> cache with other, irrelevant files. Maybe just `cat'ting some large
> bunch of files would work?
That's what I do -- pollute the cache with something irrelevant.
Actually just running XEmacs is almost sufficient. With static linking
I bet it would be.... (:
If you have enough system memory you can "prime" the cache for a kernel
compile benchmark without actually running a compile -- just do
something like
make clean; find /usr/src/linux -type f | xargs cat > /dev/null
--
Peter Samuelson
<sampo.creighton.edu!psamuels>
------------------------------
From: Andi Kleen <[EMAIL PROTECTED]>
Subject: Re: IP to process network interface?
Date: 25 Feb 1999 07:48:25 +0100
[EMAIL PROTECTED] (Phil Howard) writes:
> Is there a way to get an IP network interface into the kernel so
> that the kernel can operate on it as any network interface, but
> have the interface really connect via a process on that machine?
>
> Any IP packets sent to that interface would be given to the process,
> and any packets that process produces through the appropriate API to
> this facility, would "arrive" into the IP stack in the kernel. We
> can assume the process will have root permissions to do this up, for
> obvious reasons.
>
> Does this kind of thing exist? I've looked at some of the various
> features of Linux, and none seem to do _this_ (as simple as the
> concept seems to me). The only option I see as an alternative is
> to use PPP via a pty, but I'd rather avoid that, if I can, for a
> few reasons.
2.2 has the "Ethernet network tap", a virtual device that emulates
a ethernet device and sends the packets over netlink. On 2.0 you
can do via running a SOCK_PACKET socket on a dummy device. There may
be some limitations on the 2.0 trick.
-Andi
--
This is like TV. I don't like TV.
------------------------------
From: [EMAIL PROTECTED] (Christopher B. Browne)
Crossposted-To: comp.os.linux.hardware
Subject: Re: Linux on Mips Wince hardware?
Reply-To: [EMAIL PROTECTED]
Date: Thu, 04 Mar 1999 13:56:48 GMT
On 4 Mar 1999 05:23:06 GMT, Bill Broadley <[EMAIL PROTECTED]> posted:
>I was comparing the new compaq and the new palm pilot:
>
> Compaq aero 2100 palm V
>Ram MB 8/16 (24 max) 2
>resolution 320x240 color 160x160
>Size 5.27x3.34x.78 in 4.5" x 3.1" x 0.4"
>Cpu 70 Mhz mips 16 Mhz 68k
>Audio record/playback none
>expansion compact flash none
>Battery life 10 hours max [1] 20-30 ish real [2]
>Alarms led, chirp, vibrate beep
>backlight 2 levels on/off
>Misc. One handed scrolling (dial)
>
>[1] from compaq specs
>[2] from usenet posts
>
>Pretty amazing difference, 4-12 times the ram, 3 times the pixels, color,
>vibrate alarms, compact flash support etc.
>
>Seems like it would be easier with 16-24 mb ram+compact flash that it would
>be alot easier/direct then squeezing it into a 8 mb ram, no compact flash
>pilot.
>
>Anyone know of a project to get linux working on one of these things?
>
>Is this a bad idea to lend support to microsoft spec'd hardware?
>
>Thoughts?
Find yourself some specs for the hardware (notably LCD and BIOS
interfacing) and you may be able to get the kernel ported to run on
that one machine.
Unfortunately:
a) That only gets you to boot Linux on one machine. It won't help
with any other Wince models.
b) Getting enough specs will be extremely challenging, as the vendors
won't likely be of much assistance.
c) By the time you get the port done, that model likely won't be on
the market anymore. Which takes you back to a); the new model will
require the same process, and have these same problems.
d) Userland is a rather enormous challenge... Linux does not have
software for doing recognition of Grafitti-like input. There is no
PIM software that will happily work sans keyboard.
Linux for the Palm Computing platform is a "proof of concept" that is
most likely to be useful for embedded applications for which a simple
display, 4 buttons for input, and a serial port will prove enough.
There is merit to the notion of porting Linux to the most powerful of
the handheld machines, but *NOT,* at least as a "general purpose"
notion, the ones that lack keyboard...
--
Those who do not understand Unix are condemned to reinvent it, poorly.
-- Henry Spencer <http://www.hex.net/~cbbrowne/pims.html>
[EMAIL PROTECTED] - "What have you contributed to free software today?..."
------------------------------
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End of Linux-Development-System Digest
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