Re: [gentoo-user] IPtables question
Dnia środa, 31 stycznia 2007, James Colby napisał: I have a small home server that I have connected to the internet through a linksys router and cable modem. The linksys router is currently forwarding all ssh traffic to my gentoo box. What I would ^ Take note, that forwarded traffic (it is DNAT-ed in Linksys) would appear on your host as originating from your router. Original source address is stripped by router's NAT. Ergo, you need source address filtering in your router. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] IPtables question
Dnia piątek, 2 lutego 2007, Hans-Werner Hilse napisał: Nope, just the target Adress is rewritten (by routing). DNAT is Destination NAT! I.e. the target IP of the packet is rewritten. Since the Linksys is the default gateway, packets can keep their source IP address. Of course, the source MAC address will be rewritten to the router's -- but that's got nothing to do with NAT but routing instead. Jeee, I'm terrible sorry. My only excuse is that it was written without the morning coffee... Of course SNAT rewrites source IP and DNAT destination IP, and port forwarding uses DNAT. Once more, sorry for confusion - my mind was somehow floating around proxying not forwarding. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] How can I emerge a program with debugging options?
Dnia poniedziałek, 15 stycznia 2007 10:13, qfpvajdy napisał: Hello, I would like to emerge a program with debugging options CFLAGS=-g and without strip at the end of the build. I know that I could do this: $ export CFLAGS=-g; emerge mypackage Take a look at: http://www.gentoo.org/proj/en/qa/backtraces.xml P.S. Pls. correct your signature separator. It should be dash-dash-SPACE-enter. You have just dash-dash-enter. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] distcc
Dnia niedziela, 7 stycznia 2007 03:45, sean napisał: Your steps are obviously a bit different then those listed here. http://www.gentoo.org/doc/en/cross-compiling-distcc.xml So you are stating just emerge crossdev, the run crossdev -t and from the point where the web page states Here is what you want to do: (1.2) follow the instructions you listed here, rather then the web page? I don't have crossdev at all... AMD64 gcc can simply compile code for IA32 architecture (forced by -m32 parameter in wrapper). My note is a total replacement of http://www.gentoo.org/doc/en/cross-compiling-distcc.xml for 64-compiling-for-32 case. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] distcc
Dnia piątek, 5 stycznia 2007 14:47, sean napisał:
I am reading over the info on distcc so that I might be able to setup an
older P4 1.3 Ghz system to have help compiling from my dual Opteron
(amd64 mode).
I only want the Opteron to help the P4, not the other way around, the
Opteron does not need the help.
Is that configurable as such?
Thanks
Sean
Well, http://wiki.kraszewscy.net/Cross_DistCC shows how to do it (in Polish,
sorry).
In short:
---8X---[ setup for COMPILER machine (AMD64) ]---
1. make directory /opt/cross32/bin
2. make there a file i686-pc-linux-gnu-wrapper containing
#!/bin/bash
exec /usr/bin/x86_64-pc-linux-gnu-g${0:$[-2]} -m32 $@
3. make it executable
4. make soft links in that directory
ln -s i686-pc-linux-gnu-wrapper gcc
ln -s i686-pc-linux-gnu-wrapper g++
ln -s i686-pc-linux-gnu-wrapper c++
ln -s i686-pc-linux-gnu-wrapper cc
ln -s i686-pc-linux-gnu-wrapper i686-pc-linux-gnu-gcc
ln -s i686-pc-linux-gnu-wrapper i686-pc-linux-gnu-g++
ln -s i686-pc-linux-gnu-wrapper i686-pc-linux-gnu-c++
ln -s i686-pc-linux-gnu-wrapper i686-pc-linux-gnu-cc
5. copy /etc/init.d/distccd to /etc/init.d/distccd32
6. fix /etc/init.d/distccd32 to have
TMPDIR=${TMPDIR} \
PATH=/opt/cross32/bin \
/sbin/start-stop-daemon –start –quiet –startas ${DISTCCD_EXEC} \
7. copy /etc/conf.d/distccd to /etc/conf.d/distccd32
8. fix /etc/conf.d/distccd to have
DISTCCD_OPTS=${DISTCCD_OPTS} --port 3664
---8X---[ end of setup for COMPILER machine (AMD64) ]---
Now you have two distccd daemons:
* one at port 3632 for 32-bit distcompiling
* one at port 3664 for 64-bit distcompiling
At this point your Opterons will handle remote 32-bit compiling - you don't
need to make any changes on P4 machine other than activating regular distcc.
--
Pawel Kraszewski
www.kraszewscy.net
--
gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Compiler error during qemu installation
Dnia czwartek, 21 grudnia 2006 18:13, Rumen Yotov napisał: Hi, +1 for gcc-3.X. Just to add that maybe you'll have to use gcc-3.4.X for kernel compilation too, if you use kqemu USE-flag (as above). I compile the 'kernel'+all of qemu with 3.4.X No, you don't need GCC3 to compile _kqemu_. kqemu communicates with QEMU via device and may be compiled by different version of GCC. Works fine for me. So GCC3 for QEMU and GCC4 for kqemu and kernel. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] ifconfig - SIOCSIFFLAGS: Cannot assign requested address
Dnia poniedziałek, 11 grudnia 2006 18:34, Leandro Melo de Sales napisał: config_eth0=( 192.168.1.2 netmask 255.255.255.0 192.168.1.3 netmask 255.255.255.0 192.168.1.6 netmask 255.255.255.0 ) Well, it is a design flaw to have 3 addresses in overaping networks. From what I recall you may use only one non /32 address in a network. If the requirement is not met, problems arise: Problem: You want to broadcast to 192.168.1.255. Question: From which of these addresses should it origin? Problem: Someone else broadcasts to 192.168.1.255. Question: Which of these addresses should catch it? One? All? I was taught that configurations of multiple-ip-per-net should look like: config_eth0=( 192.168.1.2 netmask 255.255.255.0 192.168.1.3 netmask 255.255.255.255 192.168.1.6 netmask 255.255.255.255 ) Only the first has a regular mask (and therefore is source and target for broadcasts) - the rest has /32 mask and is only valid for unicast communication. AFAIK this is true for both multiple cards on single network and multiple aliases on single card. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] OT - Finding my modem
Dnia piątek, 8 grudnia 2006 23:18, Michael Sullivan napisał: 05:01.0 Communication controller: U.S. Robotics Unknown device 2f00 (rev 01) Subsystem: U.S. Robotics Unknown device 0113 Flags: bus master, medium devsel, latency 32, IRQ 11 Memory at ff90 (32-bit, non-prefetchable) [size=64K] I/O ports at bc00 [size=8] Capabilities: [40] Power Management version 2 Your modem definitely is NOT snd-intel8x0m device. Haven't found exact info (down to subsystem), but this _probably_ is HSF/HSFi-comatible modem (according to http://www.linuxant.com/drivers/hsf/index.php) Give net-dialup/hsfmodem a try. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Gigabit NIC but only 100baseT/Full working
Dnia poniedziałek, 4 grudnia 2006 22:49, Daniel van Ham Colchete napisał: I'm planing on using the eth1 ethernet with DRBD. My problem is that although the NICs support gigabit ethernet, they only negociate with 100baseT/Full. I'm using a CAT-5E crossover cable between the servers. I'm not 100% sure, but try a straight cable. I don't quite remeber, but this is due to that all 4 pairs are bi-directional and/or 1k cards are MDI/MDIX autosensing. OTOH see http://www.ertyu.org/steven_nikkel/ethernetcables.html -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] How come my 'esearch' isn't updated when I emerge something until the next 'esync'?!
Dnia piątek, 17 listopada 2006 07:27, Daevid Vincent napisał: I always found this annoying... How come when I emerge something, my 'esearch' isn't updated until the next time I do an 'esync'? Because it is the way it is designed. Well, it is a high time to switch from esearch to eix. Then you update portage with eix-sync (instead of emerge --sync) and it shows you a very detailed report of what has been updated (or downgraded) and which of these updates apply to your system. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Booting from Install cd
Dnia wtorek, 31 października 2006 11:14, Arnau Bria napisał:
I am sorry for such a newbie question but I really wane start
learning more about linux and use gentoo on my desktop computer.
Now I've burned both pcc and pcc64 to two cd's but when rebooting it
just boots back into my old system which were Mandriva 2006 with Lilo
Try ia64.
Yes, if those 2 CPUs Kyle mentioned are Itanium processors - I doubt. I guess
these are EM64T processors in which case the correct setting is somewhat
misleading AMD64 .
In case of EM64T, the system setting can be built upon this setting
(in /etc/make.conf):
CHOST=x86_64-pc-linux-gnu
CFLAGS=-march=nocona -O2 -pipe
CXXFLAGS=${CFLAGS}
The NOCONA setting is crucial, as Intel is slightly different from AMD.
Also, look at your /proc/cpuinfo , flags section. Than set appropriate USE
flags according to this table:
CPU flag | set this
present | USE flag
---+-
mmx| mmx
sse| sse
sse2 | sse2
pni| sse3 *
mmxext | mmxext
3dnowext **| 3dnowext
3dnow**| 3dnow
* No ebuild seems to use sse3 flag (yet)
** Well, 3dnow is for AMD/AMD64, put here just for reference
See also at http://gentoo-wiki.com/Safe_Cflags .
--
Pawel Kraszewski
www.kraszewscy.net
--
gentoo-user@gentoo.org mailing list
Re: [gentoo-user] How to detect when memory-card inserted into USB card-reader?
Dnia niedziela, 15 października 2006 07:08, Walter Dnes napisał: If I stick the SD memory-card from my camera into my USB all-in-one memory card-reader *BEFORE PLUGGING THE CARD-READER INTO THE USB PORT*, it's recognized as /dev/sdb and mount works as expected. If I stick the SD memory-card from my camera into my USB all-in-one memory card-reader *AFTER PLUGGING THE CARD-READER INTO THE USB PORT*, no such luck. If I fdisk /dev/sdb (which requires root) then it wakes up something somewhere, the card is recognized as /dev/sdb and mount works as expected. Is it possible to get the system to automatically recognize when a card is inserted into the reader? Look at: sys-apps/ivman Homepage:http://ivman.sf.net Description: Daemon to mount/unmount devices, based on info from HAL -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] LDAP with no privileged login
Dnia czwartek, 12 października 2006 17:50, Leandro Melo de Sales napisał: I'm configured a LDAP server to be used as a users database. Now, I want to setup linux box clients to auth against LDAP server. I installed ldap-pam and ldap-nss. In /etc/ldap.conf file I have to inform rootdn password. What is the best way to do this since the configuration file has to be readable to all. I think that use privileged login in this situation (even if I use /etc/ldap.secret file) is dangerous. So, should I created a LDAP user just to be used as a rootdn login? how can I create a nonprivileged login? 1. You create user in LDAP tree _outside_ ou=people tree 2. Set password for it and disable shell login (just in case) 3. Tell ldap-nss to use this user as binddn= with pass bindpw= 4. Allow owner of the record (logged-on user) to change his/her password -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Can smbmount handle long passwords?
Dnia czwartek, 12 października 2006 21:13, Maxim Eremeev napisał: Due to a little bit of paranoia I have found an interesting, though rather annoying, bug in smbmount. If a samba user's password is longer than 23 chars, smbmount just cannot deal with it, producing the following error: Well, I might be wrong, but I think Windoze has a limit of 14 characters in passsword (two 7 character pieces to be exact). I didn't try, but it seems that pass might be truncated at 14th character... So try logging in with 14 first characters of your password (or maybe 14 last - who knows the paths of Bill) HTH -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Dumb question
Dnia środa, 11 października 2006 06:21, Anthony E. Caudel napisał: I have been using Gentoo for more than 2 years now and have always wondered (but never asked - That's the dumb part) how Gentoo manages to update a package that happens to be running at the time. Given that the old version (the one running) is deleted, how does it manage to keep standing if you just cut its legs off? I've never seen this discussed anywhere which probably means everyone else already knows and are probably thinking to themselves, Dumb question. Observe CAREFULLY sequence of operations during emerge. It doesn't remove old package and install new ones. It installs the new one over the old and then removes unnecessary remains. It may overwrite file in use due to the way Unices handle file management. On Windows you can't delete open file. On Unix you can, and process keeping file open won't usually notice that. Moreover, as long as the file is open, its data isn't removed from disk. Once the process closes it, it is physically removed - not sooner. So after overwriting file (library, application) currently running applications (having it open) will still have access to old version and each newly run application will use the new one. Which in turn means - yes, you need to 'power cycle' application to use new libraries or new version of executable. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] how to execute some scripts after an emerge
Dnia sobota, 7 października 2006 03:16, Robert Welz napisał: Hello! Are there hooks in portage with which I can execute some scripts after an emerge -u world? I need to check my libraries in the chroot jail :) I build for boinc today against their original counterparts in the file system. This would be nicer than having a cronjob looking after them at fixed intervals. Well, that would be emerge -your -parameters /your/script Script would be called on successful emerge. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] recompiing kernel quesiton
Dnia niedziela, 24 września 2006 01:46, Stephen Liu napisał: Please, switch off HTML posting as it annoys plenty of users... Correct sequence for kernel generation/update is: Go to your new kernel directory and first get your running kernel config (if you enabled this in previous kernel): # zcat /proc/config.gz .config Now fix the config (observing which options have NEW at the end and consulting online help what do they mean) # make menuconfig or # make xconfig Now compile the kernel # make And install it # make modules_install # make install Afterwards you do nothing (if you have GRUB) or run lilo (guess, if you have LILO :) Take note, that some software doesn't work in monolithic kernel (meaning with modules disabled) - especially third-party binary drivers (nvidia, ATI, probably ndiswrapper) -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] recompiing kernel quesiton
Dnia niedziela, 24 września 2006 11:51, Stephen Liu napisał: I'm suffering poweroff problem, on exiting System halted but not poweroff. First of all - you may try the installation CD of Gentoo - boot it and give 'halt -p' at command prompt. If it switches off, that means error in your config. If it doesn't, this might be the hardware fault. Put some light and describe your hardware. Especially - which motherboard model, drop your 'lspci' output. Contents of '/var/log/dmesg' might also be helpful. The latter might be too big for this mailing list, so don't hesitate to drop it gzipped directly to my address. By the way - did you inspect your BIOS settings for ACPI/power management misconfiguration? If you want, I may drop you my kernel configuration (AMD64, Nforce3 based mainboard) - due to my work it covers all usable filesystems and most IPv4 toys. It does switch off without problem - you may use it as a starting point for experiments. -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Recommend an HTML/CSS editor?
Dnia wtorek, 19 września 2006 04:38, Kevin O'Gorman napisał: I'm about to write a bunch more, and I'm hoping there's a Linux product that works reasonably well with CSS style sheets. Anybody know of one. Free is good, cheap is acceptable. Look at: app-editors/nvu Available versions: 0.90-r2 1.0-r2 1.0-r4 Homepage:http://www.nvu.com/ Description: A WYSIWYG web editor for linux similiar to Dreamweaver This is a web-editor ripped and evolved from Mozilla Suite kde-base/quanta Available versions: (3.4) 3.4.3 (3.5) 3.5.2 3.5.3 3.5.4 Homepage:http://www.kde.org/ Description: KDE: Quanta Plus Web Development Environment This is a KDE-standard-compliant web editor app-editors/bluefish Available versions: 1.0 1.0.2 1.0.4 1.0.4-r1 1.0.5 Homepage:http://bluefish.openoffice.nl/ Description: A GTK HTML editor for the experienced web designer or programmer. This is GTK-standard-compliant web editor HTH -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] 64-bit system?
Dnia poniedziałek, 18 września 2006 17:49, Richard Fish napisał: You'll only notice a speed increase with applications that need to caculate very large numbers, like encryption keys and certain scientific apps. Everything else will basically run just as fast in 32-bit mode as it will in 64-bit. There are exceptions in certain media encoders that don't have hardware optimizations for 64-bit, that may actually run faster as 32-bit apps. Well, the registers are not only twice longer, but there is twice as much of them as in 32-bit. And THIS is what optimising compilers are fond of. More registers mean less in-memory temporary variables, which in turn means less memory accesses. This gives speed improvement. For SMP systems it gives huge difference - as the memory is shared between CPUs and they must fight for it. I have an amd64 system for over a year (or is it 2-yrs?). I had some glitches: * Need to use binary 32-bit firefox to have flash - still have problems with some fonts not appearing in flash * Need to use 32-bit java to make 32-bit OpenOffice happy * Some forensic packages won't compile on 64-bit due to bad coding techniques But besides that - my AMD64 3000+ just rocks. I had definitely much more problems with 64-bit XP, but since getting rid of it (XP not problems) I am fully 64-bit positive :D -- Pawel Kraszewski www.kraszewscy.net -- gentoo-user@gentoo.org mailing list
