Linux-Development-Sys Digest #805, Volume #6 Wed, 9 Jun 99 20:14:45 EDT
Contents:
Re: the ultimate OS (Vladimir Z. Nuri)
Re: system call (Holger Voigt)
Re: Kernel and Modules (Sylvan Butler)
Re: EGCS problem - RH6.0 (Alex Maranda)
Re: Linux & Cybercafe (Alan Curry)
Re: change ip adress in c program (Remco van den Berg)
Re: Questions on Linux Memory Managment (Joel Huselius)
Re: Where is linux free download? (Konrad Mieredorff)
Strange MO drive behavior (Safuat Hamdy)
Linux & Cybercafe ("MicroNg")
Re: TAO: the ultimate OS ("[EMAIL PROTECTED]")
Re: Correction: /etc/inittab suggestion for all distributions (Abdullah Ramazanoglu)
Re: Red Hat 6.0 not fscking the root partition! (Juergen Heinzl)
Re: Images (Juergen Heinzl)
Re: Questions on Linux Memory Managment (J.H.M. Dassen (Ray))
Re: linux wavelan driver (Nelson Minar)
Re: /etc/inittab suggestion for all distributions (Frank v Waveren)
Re: Red Hat 6.0 not fscking the root partition! (David T. Blake)
APM problems with RH6.0 Linux on Thinkpad 560 (Gaylord Holder)
----------------------------------------------------------------------------
Crossposted-To: alt.os.linux,comp.os.linux.advocacy,comp.os.misc,comp.unix.advocacy
From: [EMAIL PROTECTED] (Vladimir Z. Nuri)
Subject: Re: the ultimate OS
Date: Wed, 9 Jun 1999 19:36:26 GMT
Donal K. Fellows ([EMAIL PROTECTED]) wrote:
: Hmm. Your primary wishlist/diagnosis is laudable, but the current
: state of software engineering would seem to pretty much preclude you
: from going after more than one of those lofty goals at a time. I'll
: comment on each of them before moving on to my impressions of the rest
: of the document.
good item-per-item analysis of the difficulty of
accomplishing the vision .. with nice focus on what I actually
wrote. I freely acknowledge feasibility
is steep. even in a best case scenario, I can't
imagine the OS happening in sooner than a few years. but
you don't really object to the inherent feasibility of each of
the design goals. "they are very hard and not being done
right now". ok, I agree.<g> that's why they haven't been done
yet. the easy stuff has already been done.
it's not gonna be easy. who said it was gonna be easy?<g>
: Please don't take this as a flame (it isn't intended to be) but your
: document seems to me to be in some ways rather like the Communist
: Manifesto; cute concept(s) but next to no applicability in the real
: world. I could be wrong, but I doubt it, and I suspect that many
: other people think there is nothing there except fine words and
: moonshine. But then there are a lot of cynics on c.o.l.a... :^)
truly, on one level it's nothing but a bunch of memes
strung together in my brain
right now, of which the essay is only a rough/imperfect glimpse,
but memes that are very loosely entering a few other brains as
well..
--
~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^
"in theory, there's no difference [EMAIL PROTECTED]
between theory and practice, mad genius research lab
but in practice there is!" http://www8.pair.com/mnajtiv/
------------------------------
From: Holger Voigt <[EMAIL PROTECTED]>
Subject: Re: system call
Date: Wed, 09 Jun 1999 09:58:26 +0200
NTVO910 wrote:
> Ok, I want my program to use the "su" or some similar command to change the
> account that the user is on. I want it to try to change to the root account
> and type in the password for the user.
> If the user is doing it, it's done like this:
> ________________
> [EMAIL PROTECTED]> su
> Password: --password goes here--
> ________________
> duh, ok. So I checked the manuals to try and find some command like change
> account or something but the command line "su" was all that I found. I tried
> to use:
> system("su");
> system(password_ptr);
> However, after the program uses "su," it just waits for the response and does
> not right the data in password_ptr to the prompt. Do I have to use some other
> function? Do I have to do it some little different way? Am I a complete
> idiot?
> Ok so I am.
> Thanks for all help.
> Braden
You have to use setreuid()- function and the program should be owned by root
with sbit set.
See man pages for more information.
bye
Holger
------------------------------
From: [EMAIL PROTECTED] (Sylvan Butler)
Crossposted-To: hp.os.linux
Subject: Re: Kernel and Modules
Date: 9 Jun 1999 19:45:24 GMT
Reply-To: [EMAIL PROTECTED]
On Wed, 9 Jun 1999 10:57:16 -0700, David Bell <[EMAIL PROTECTED]> wrote:
>Does the kernel (and probably depmod) use the lib/modules/2.2.5-15smp
>directory when I boot the vmlinuz-2.2.5-15smp kernel? If so, how does it
>know to do that?
Check the output of 'uname -r' when running under each kernel.
>I presume that if only a single directory in /lib/modules is used once the
Probably true.
>kernel is fully booted AND I want to run either UP or SMP kernel, I can
>safely use the modules that were compiled for the SMP kernel. Is this
>correct?
I don't think so. The SMP modules will be compiled with different
symbols and support functions than uniP modules. At least, that's the
way it looks to me...
sdb
--
| Sylvan Butler | Not speaking for Hewlett-Packard | sbutler-boi.hp.com |
| Watch out for my e-mail address. Thank UCE. #### change ^ to @ #### |
They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety. --Benjamin Franklin, 1759
"Don't Tread On Me!"
------------------------------
From: Alex Maranda <[EMAIL PROTECTED]>
Subject: Re: EGCS problem - RH6.0
Date: Wed, 09 Jun 1999 10:22:57 +0100
root wrote:
>
> I am trying to compile the following code -
>
> --------
> #include <iostream.h>
>
> float ComputePay(float hours, float rate)
> {
> return hours * rate;
> }
>
> main()
> {
> double hours;
> double payrate;
>
> hours = 40;
> payrate = 12.5;
>
> cout << "The pay is: " << ComputePay(hours, payrate) << "\n";
>
> return 0;
> }
> ------------
>
> Compiling this code results in the following errors.
>
> In function 'main':
> undefined reference to 'cout'
> undefined reference to 'ostream::operator<<(char const *)'
> undefined reference to 'ostream::operator<<(float)'
> undefined reference to 'ostream::operator<<(char const *)'
>
> -------------
>
> I manually typed the above code and error messages in so take that into
> account. I am not receiving any errors about 'iostream.h' missing.
> Why is this happening?
>
> Thanks,
> tom
gcc yoursource.cc -lstdc++
--
Alex Maranda mailto: amaranda at spider dot com
Spider Software Ltd. Tel: +44 (0)131 4757036
Edinburgh, UK http://members.xoom.com/Alex_Maranda
STREAMS based communications protocols for embedded systems
------------------------------
Crossposted-To: alt.uu.comp.os.linux.questions,comp.os.linux.networking
Subject: Re: Linux & Cybercafe
From: [EMAIL PROTECTED] (Alan Curry)
Date: Wed, 09 Jun 1999 20:10:59 GMT
In article <[EMAIL PROTECTED]>,
Maurice Kemmann <[EMAIL PROTECTED]> wrote:
>You can configure the windowmanager without any xterm. So the users are
>not able to start any other program. On the desktop you offer only the
>browser. Login should be via xdm !
>That's it i think !
And you think netscrape provides an unbreakable jail environment?
Edit/Preferences/Navigator/Applications - look, an editable list of commands
to be run.
Anonymous public X terminal access is not going to be easy to do right.
--
Alan Curry |Declaration of | _../\. ./\.._ ____. ____.
[EMAIL PROTECTED]|bigotries (should| [ | | ] / _> / _>
==============+save some time): | \__/ \__/ \___: \___:
Linux,vim,trn,GPL,zsh,qmail,^H | "Screw you guys, I'm going home" -- Cartman
------------------------------
From: [EMAIL PROTECTED] (Remco van den Berg)
Subject: Re: change ip adress in c program
Date: Wed, 09 Jun 1999 21:02:17 GMT
On Mon, 07 Jun 1999 14:16:49 +0200, Thierry BUCCO wrote:
>Hi,
>
>
>is there anybodu wrote function to change ip adress in my c program.
>Or how can i do that ?
>
>Thanks a lot.
>
>Thierry - FRANCE
I don't exactly understand what you want but you could take a look at
the source of the ifconfig program.
-Remco
--
============================================================================
Remco van den Berg Admin DSE http://www.dse.nl/
[EMAIL PROTECTED] Linux Certified Systems Engineer :-)
============================================================================
------------------------------
Date: Wed, 9 Jun 1999 12:41:08 +0200
From: Joel Huselius <[EMAIL PROTECTED]>
Subject: Re: Questions on Linux Memory Managment
Responce on J.H.M. Dassen=B4s reply to our submitted query
"Questions on Linux Memory Managment":
We regret that this discussion is held on Usenet, but after
J.H.M. Dassen=B4s accusation we cannot be silent.
If one is not capable, or feels reluctant to, provide the Newsgroup
with intelligent replies to posted questions there is no need to
take an active part in the discussion. And there certainly is no need
to submit unfounded allegations on innocent people seeking answers.
Such a foul and mean allegation demands a direct response,
and we expect an excuse for this, unfounded and
incorrect, attack!
Joel [EMAIL PROTECTED]
Mikael [EMAIL PROTECTED]
Students in Computer Engineering at Maelardalens University Sweden
On 8 Jun 1999, J.H.M. Dassen (Ray) wrote:
> Mikael Bendtsen <[EMAIL PROTECTED]> wrote:
> >We are two computer engineering students writing on a paper concerning
> >Memory Managment in Linux. Here are some questions that arised when we
> >studied some material written by various people, hope anyone can help.
>=20
> Quite frankly, your questions look a lot more like questions asked by
> instructors in a practical course assignment than ones that come up in
> students.
>=20
> As such, the most useful advice I can give you is to use the power of Lin=
ux
> by getting the source and studying it for yourself; it's all in there.
>=20
> I had to do a similar assignment during my studies and found studying the
> source code to be a quite enlightening exercising and one that cannot be
> replaced by posting the assignment questions on Usenet.
>=20
> HTH,
> Ray
>=20
------------------------------
From: Konrad Mieredorff <[EMAIL PROTECTED]>
Subject: Re: Where is linux free download?
Date: Wed, 09 Jun 1999 21:08:57 +0200
Assembly Wizard wrote:
>
> I just spent an hour crusing the net looking for linux to download.
> Seems every site was selling linux.
>
> I downloaded it last year but am unable to find the free site I got it
> from...can some kind soul help?
>
> Brett Ostrom
> [EMAIL PROTECTED]
Which Distribution?
Debian for example is www.debian.org
The kernel (that's what linux actually is) is available for
ftp.kernel.org
------------------------------
From: Safuat Hamdy <[EMAIL PROTECTED]>
Subject: Strange MO drive behavior
Date: 09 Jun 1999 22:57:38 +0200
Hi,
with recent Linux versions (see below) my MO-drive shows up a strange behavior:
First I created a new filesystem (ext2) on a whole MO-disk (/dev/dsk/sdc), no problems.
Then I created some partitions on the disk and tried to build a new filesystem on a
partition
(/dev/dsk/sdc1). I got the following messages
Jun 9 21:48:00 euler kernel: SCSI disk error : host 0 channel 0 id 2 lun 0 return
code = 28000002
Jun 9 21:48:00 euler kernel: extra data not valid Current error sd08:21: sense
key Illegal Request
Jun 9 21:48:00 euler kernel: Additional sense indicates Logical block address out
of range
Jun 9 21:48:00 euler kernel: scsidisk I/O error: dev 08:21, sector 1245448
[more than 10000 times more]
Moreover, when I mounted the partition, I found in the syslog
Jun 9 22:25:17 euler kernel: 3)): ext2_check_blocks_bitmap: Block #373 of the
inode table in group 0 is marked free
Jun 9 22:25:17 euler kernel: EXT2-fs error (device sd(8,33)):
ext2_check_blocks_bitmap: Block #374 of the inode table in group 0 is marked free
Jun 9 22:25:17 euler kernel: EXT2-fs error (device sd(8,33)):
ext2_check_blocks_bitmap:
Block #375 of the inode table in group 0 is marked free
[some 1000 times more]
intermixed with
Jun 9 22:25:19 euler kernel: SCSI disk error : host 0 channel 0 id 2 lun 0 return
code = 28000002
Jun 9 22:25:19 euler kernel: extra data not valid Current error sd08:21: sense
key Illegal Request
Jun 9 22:25:19 euler kernel: Additional sense indicates Logical block address out
of range
Jun 9 22:25:19 euler kernel: scsidisk I/O error: dev 08:21, sector 3407884
[also some 1000 times more]
Even more strange:
# cd /mo
/mo
# df .
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/dsk/sdc1 2403680 26 2403654 0% /mo
# touch foo
touch: foo: No space left on device
I've not even the foggiest idea, whats going on.
Technical data:
Linux version: 2.2.9
GCC: egcs 1.1.2
libc: glibc-2.1.1
--
S. Hamdy | All primes are odd except 2,
[EMAIL PROTECTED] | which is the oddest of all.
|
unsolicited commercial e-mail | D.E. Knuth
is strictly not welcome |
------------------------------
From: "MicroNg" <[EMAIL PROTECTED]>
Crossposted-To: alt.uu.comp.os.linux.questions,comp.os.linux.networking
Subject: Linux & Cybercafe
Date: 9 Jun 1999 11:04:53 GMT
Hi,
I'm thinking of putting linux as the surf engine (with program like
netscape communicator for linux)
however, how to limit the access that so the user can only access the
browser but NOT any other
program ? ( to access other program, for eg for the webmaster to shutdown
the computer, an passcode
is required).
any idea ?
--
NO UCE
~~~~~~~~~~~~~~~~~~~~~~~
[EMAIL PROTECTED]
[EMAIL PROTECTED]
[EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~
------------------------------
From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
Crossposted-To: alt.os.linux,comp.os.linux.advocacy,comp.os.misc,comp.unix.advocacy
Subject: Re: TAO: the ultimate OS
Date: Wed, 09 Jun 1999 13:11:59 +0100
Reply-To: [EMAIL PROTECTED]
Jimen Ching wrote:
[ halloween document ]
>
> There are lots of theory in that paper. Almost all of them lack concrete
> data to support it. This is what software engineers will see, more than
> anything else.
>
it was an *essay* not a software engineering document. it wasn't even a
paper that described how development should be done, necessarily, imo. both
ways can work but in the (somewhat) extreme case of 'linux v. windows' it
is relativey 'clear' which method is supposed to be 'better' (and there are
no absolutes, no matter who's doing the talking).
if i read the economist i expect data to back up the arguments. if i read
the spectator i (usually) do not.
------------------------------
From: Abdullah Ramazanoglu <[EMAIL PROTECTED]>
Subject: Re: Correction: /etc/inittab suggestion for all distributions
Date: Wed, 09 Jun 1999 19:44:24 +0300
>
> # Switch to single-user upon receiving <LeftAlt-Uparrow> key combination
> :kr::kbrequest:/sbin/shutdown -t3 now
>
Above inittab entry is incorrect. Correct one should be :
kr::kbrequest:/sbin/shutdown -t3 now
Regards,
--
Abdullah Ramazanoglu ( aramazanoglu AT demirbank DOT com DOT tr )
------------------------------
From: [EMAIL PROTECTED] (Juergen Heinzl)
Subject: Re: Red Hat 6.0 not fscking the root partition!
Date: Wed, 09 Jun 1999 22:15:34 GMT
In article <[EMAIL PROTECTED]>, Ronald Cole wrote:
>I'm a new convert to Red Hat (from Slackware). I've performed a
>"Server" install of "official" Red Hat 6.0 and noticed that the root
>partition check is aborting and therefore the root partition never
>gets checked. I rebooted several dozen times while configuring the
>system. I've tried Red Hat's "on-line support" but it is horribly
>broken and Red Hat's support manager admits as much but doesn't offer
>any useful suggestions to resolve the issue (all email gets promptly
>ignored, but that is another problem)...
>
>My problem is that, in /etc/rc.d/rc.sysinit, the root partition is
>checked with the command "fsck -T -a /" which causes the WARNING in
>the attached logfile.:
>
> /dev/sda8 is mounted.
> WARNING!!! Running e2fsck on a mounted filesystem may cause
> SEVERE filesystem damage.
> check aborted.
[...]
>Slackware 3.4 used -a with fsck, but used e2fsck-1.10, while Red Hat
>6.0 uses e2fsck-1.14. Did something change between 1.10 and 1.14 or
>did fsck just get stupid? How should I fix the fsck command in
>/etc/rc.d/rc.sysinit?
Sure, vi 8-) ... no really, if you do not have other FS types than
ext2fs than you can just call e2fsck. I've been using e2fsck -p and
-f if /forcefsck exists for years, but this is all home grown here.
I do know fsck allows parallel checking too, but years - 1 ago I'd
an error on two disks ... fsck got a bit confused since two instances
tried to read an answer to the question for what to do from the same
terminal at the same time 8-/
[...]
Cheers,
Juergen
--
\ Real name : J�rgen Heinzl \ no flames /
\ EMail Private : [EMAIL PROTECTED] \ send money instead /
------------------------------
From: [EMAIL PROTECTED] (Juergen Heinzl)
Subject: Re: Images
Date: Wed, 09 Jun 1999 22:15:35 GMT
In article <7jkah0$pme$[EMAIL PROTECTED]>, Lenny grosso wrote:
>Can anybody tell me about creating boot images for a floppy disk?
cat /boot/vmunix (or whatever your kernel is) > /dev/fd0. Yes,
that is all.
Cheers,
Juergen
--
\ Real name : J�rgen Heinzl \ no flames /
\ EMail Private : [EMAIL PROTECTED] \ send money instead /
------------------------------
From: [EMAIL PROTECTED] (J.H.M. Dassen (Ray))
Subject: Re: Questions on Linux Memory Managment
Date: 9 Jun 1999 12:52:04 GMT
[This is off-topic for c.o.l.*; f'up set]
Joel Huselius <[EMAIL PROTECTED]> wrote:
>Responce on J.H.M. Dassen�s reply to our submitted query "Questions on
>Linux Memory Managment":
>
>We regret that this discussion is held on Usenet, but after
>J.H.M. Dassen�s accusation we cannot be silent.
>
>If one is not capable, or feels reluctant to, provide the Newsgroup with
>intelligent replies to posted questions there is no need to take an active
>part in the discussion. And there certainly is no need to submit unfounded
>allegations on innocent people seeking answers.
You do not provide any indication of what writings you have studied prior to
your posting; the style of questions you asked is that of an exam or
assignment, quite unlike the language normally used on Usenet; you exhibit
clear signs of being new on Usenet (quoting messages in full; replying above
quoted text; not using a spell checker). All this together does not change
my opinion, nor my advice.
>Such a foul and mean allegation demands a direct response, and we expect an
>excuse for this, unfounded and incorrect, attack!
Expect away.
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
------------------------------
From: Nelson Minar <[EMAIL PROTECTED]>
Subject: Re: linux wavelan driver
Date: 09 Jun 1999 19:47:49 -0400
Cynthia Montalvo <[EMAIL PROTECTED]> writes:
> Hi. I'm using Lucent's WaveLan/PCMCIA card on a laptop with RedHat
> Linux 5.2 (kernel 36) and want to be on 2.4 gHz. I've already
> installed the pcmcia-cs-3.0.7 file. My question is does anyone know
> where i can get a linux driver for the WaveLan card?
pcmcia-cs includes a WaveLan driver - that version should at least
recognize the card, if not use it correctly. Does it not even do that?
You will undoubtedly want to upgrade to the latest version - WaveLan
support has changed a lot. Check
http://hyper.stanford.edu/HyperNews/get/pcmcia/home.html
for more info.
I have found that sometimes David Hinds' versions don't work for me as
well as other parties. Some other places to look are:
http://www.fasta.fh-dortmund.de/users/andy/wvlan/
http://www.media.mit.edu/~jseger/wavelan.html
I use the latter driver on my machine (a 900MHz WaveLan from Digital,
I believe) and it works great. But the version is old, and it might
just work for me because Justin wrote it for our LAN :-)
When you get it working could you post letting us know how?
[EMAIL PROTECTED]
. . . . . . . . http://www.media.mit.edu/~nelson/
------------------------------
From: [EMAIL PROTECTED] (Frank v Waveren)
Subject: Re: /etc/inittab suggestion for all distributions
Date: Wed, 09 Jun 1999 15:12:14 GMT
Why? Why not just switch to a virtual terminal with ctrl-alt-f1?
In article <[EMAIL PROTECTED]>,
Abdullah Ramazanoglu <[EMAIL PROTECTED]> writes:
> To be able to break the respawn loop which occurs when X fails to start
> in an "id:5:initdefault:" system, I have added a "kbrequest" entry to
> /etc/inittab as below:
>
> # Switch to single-user upon receiving <LeftAlt-Uparrow> key combination
>:kr::kbrequest:/sbin/shutdown -t3 now
>
> This is with default keyboard map. Users can adjust "kbrequest" signal
> to any key combination they want.
> With this entry in inittab, when a X-respawn loop occurs, I simply press
> Alt-Uparrow to switch to run level 1. Then it is possible to do repairs.
> It is both a big relief and encouragement for those who modify X setup.
> The alternative is booting from diskette.
> I suggest that distributions put such an entry to their inittab by
> default.
>
> Regards,
>
--
Frank v Waveren
[EMAIL PROTECTED]
ICQ# 10074100
------------------------------
From: [EMAIL PROTECTED] (David T. Blake)
Subject: Re: Red Hat 6.0 not fscking the root partition!
Date: 09 Jun 1999 16:44:28 -0700
Ronald Cole <[EMAIL PROTECTED]> writes:
>I'm a new convert to Red Hat (from Slackware). I've performed a
>"Server" install of "official" Red Hat 6.0 and noticed that the root
>partition check is aborting and therefore the root partition never
>gets checked...
Get yourself a Toms root/boot disk, and periodically
boot from floppy and e2fsck the root partition. You can't
really e2fsck a mounted partition, and since e2fsck is on
your root partition, you need to boot from something else
as root.
www.toms.net
--
Dave Blake
[EMAIL PROTECTED]
------------------------------
From: Gaylord Holder <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.setup,comp.sys.laptops
Subject: APM problems with RH6.0 Linux on Thinkpad 560
Date: 09 Jun 1999 16:25:14 -0700
I have an IBM Thinkpad 560 (no trailing letters) running RedHat 6.0
(linux kernel 2.2.2.5-15).
I've installed the Win95 bios (sytpk111.exe) on the machine because
the machine locks up on resume with the Win98 bios (sytpk120.exe)
I have the following problems with APM on it:
Occassionally the backlight does not turn back on after a resume
Disk drive does not shut down when the lid closes
Desired APM mode can not be entered
Everything seems to work the for the first suspend/resume cycle, but
after that, getting the machine to enter suspend seems pretty random.
I've configured APM with the following options:
CONFIG_APM=y
# CONFIG_APM_IGNORE_USER_SUSPEND is not set
CONFIG_APM_DO_ENABLE=y
CONFIG_APM_CPU_IDLE=y
CONFIG_APM_DISPLAY_BLANK=y
CONFIG_APM_POWER_OFF=y
CONFIG_APM_IGNORE_MULTIPLE_SUSPEND=y
CONFIG_APM_IGNORE_SUSPEND_BOUNCE=y
CONFIG_APM_RTC_IS_GMT=y
# CONFIG_APM_ALLOW_INTS is not set
Does anyone have any insights or suggestions on this?
--
Gaylord
------------------------------
** FOR YOUR REFERENCE **
The service address, to which questions about the list itself and requests
to be added to or deleted from it should be directed, is:
Internet: [EMAIL PROTECTED]
You can send mail to the entire list (and comp.os.linux.development.system) via:
Internet: [EMAIL PROTECTED]
Linux may be obtained via one of these FTP sites:
ftp.funet.fi pub/Linux
tsx-11.mit.edu pub/linux
sunsite.unc.edu pub/Linux
End of Linux-Development-System Digest
******************************
