June 2012 - kernelnewbies@kernelnewbies.org - Kernelnewbies Mailing Lists

Re: Sysfs class attribute problem
by Pranay Kumar Srivastava June 21, 2012

June 21, 2012

> -----Original Message----- > From: kernelnewbies-bounces(a)kernelnewbies.org [mailto:kernelnewbies- > bounces(a)kernelnewbies.org] On Behalf Of kernelnewbies- > request(a)kernelnewbies.org > Sent: Wednesday, June 20, 2012 11:33 PM > To: kernelnewbies(a)kernelnewbies.org > Subject: Kernelnewbies Digest, Vol 19, Issue 39 > > Send Kernelnewbies mailing list submissions to > kernelnewbies(a)kernelnewbies.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > or, via email, send a message with subject or body 'help' to > kernelnewbies-request(a)kernelnewbies.org > > You can reach the person managing the list at > kernelnewbies-owner(a)kernelnewbies.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Kernelnewbies digest..." > > > Today's Topics: > > 1. RE: A confusion about invoking my syscall (Jeff Haran) > 2. Re: Sysfs class attribute problem (Jeshwanth Kumar N K Jeshu) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 20 Jun 2012 16:58:30 +0000 > From: Jeff Haran <jharan(a)bytemobile.com> > Subject: RE: A confusion about invoking my syscall > To: ?? <wangzhe5004(a)gmail.com> > Cc: kernelnewbies <kernelnewbies(a)kernelnewbies.org> > Message-ID: > <4AB110E2FA959F41AC8480E84516371105B80D(a)HQ-EX01.bytemobile.com> > Content-Type: text/plain; charset="iso-2022-jp" > > > > From: ?? [mailto:wangzhe5004@gmail.com] > Sent: Wednesday, June 20, 2012 1:16 AM > To: Jeff Haran > Cc: kernelnewbies > Subject: Re: A confusion about invoking my syscall > > > 2012/6/20 Jeff Haran > <jharan(a)bytemobile.com<mailto:jharan@bytemobile.com>> > > > From: ?? [mailto:wangzhe5004@gmail.com<mailto:wangzhe5004@gmail.com>] > Sent: Monday, June 18, 2012 9:32 PM > To: Jeff Haran > Cc: kernelnewbies > Subject: Re: A confusion about invoking my syscall > > > 2012/6/19 Jeff Haran > <jharan(a)bytemobile.com<mailto:jharan@bytemobile.com>> > > > From: kernelnewbies-bounces(a)kernelnewbies.org<mailto:kernelnewbies- > bounces(a)kernelnewbies.org> [mailto:kernelnewbies- > bounces(a)kernelnewbies.org<mailto:kernelnewbies- > bounces(a)kernelnewbies.org>] On Behalf Of ?? > Sent: Monday, June 18, 2012 6:40 PM > To: kernelnewbies > Subject: A confusion about invoking my syscall > > Hello everyone: > > I append a simple syscall in kernel. and the function is as > follows: > > asmlinkage long sys_mysyscall(long data) > { > printk("This is my syscall!\n"); > return data; > } > > and i test it sucessfully in user space . and the test program: > > #include <linux/unistd.h> > #include <syscall.h> > #include <sys/types.h> > #include <stdio.h> > > > > int main(void) > { > long n = 0,m = 0,pid1,pid2; > n = syscall(345,190);// #define __NR_mysyscall 345 > printf("n = %ld\n",n); > pid1 = syscall(SYS_getpid); //getpid > printf("pid = %ld\n",pid1); > pid2 = syscall(20); //getpid > printf("pid = %ld\n",pid2); > return 0; > } > and the result: > n = 190 > pid = 4097 > pid = 4097 > > but if the test program is: > #include <linux/unistd.h> > #include <syscall.h> > #include <sys/types.h> > #include <stdio.h> > > > > int main(void) > { > long n = 0,m = 0,pid1,pid2; > n = syscall(345,190);// #define __NR_mysyscall 345 > printf("n = %ld\n",n); > m = syscall(SYS_mysyscall,190); > printf("m = %ld\n",m); > pid1 = syscall(SYS_getpid); //getpid > printf("pid = %ld\n",pid1); > pid2 = syscall(20); //getpid > printf("pid = %ld\n",pid2); > return 0; > } > and the result: > wanny@wanny-C-Notebook-XXXX:~/syscall/src$ gcc test1.c > test1.c: In function ?main?: > test1.c:13:14: error: ?SYS_mysyscall? undeclared (first use in this > function) > test1.c:13:14: note: each undeclared identifier is reported only once > for each function it appears in > > > why i can't invoke my syscall with "SYS_mysyscall"? > > Thanks in advance! > Because it appears you never defined the symbol SYS_mysyscall. > I think so,but where shoud i defne the symbol SYS_mysyscall ? > and where is the symbol SYS_getpid defined? > On my system /usr/include/bits/syscall.h, which is being included in > your program because it includes syscall.h. > 83 #define SYS_getpid __NR_getpid ?so SYS_getpid is > replaced by __NR_getpid. and __NR_getpid was defined in the > kernel(arch/x86/include/asm/unistd_32.h). and my syscall was also > defined there.#define SYS_mysyscall __NR_mysyscall, i don't kown why it > doesn't works. > > My sources contain no reference to SYS_mysyscall nor __NR_mysyscall, so > I assume you?ve added them to the Linux include files that you built > your module from. > > User space programs like your main() program above generally aren?t > going to include Linux source tree include files. When you include > <syscall.h> from a user space program in a typical development > environment, the compiler is by default going to look for syscall.h in > /usr/include, not in the Linux source tree where presumably you?ve made > your modifications. Of course you can always tell the compiler to look > there using the -I command line option to gcc, if you want to. The > usual practice however is to keep kernel code and user code include > files completely separate. That means some duplication of effort, like > having to define SYS_mysyscall in two different places, but that?s the > usual practice because most people aren?t building kernels and thus > haven?t installed the kernel source include files. > > Jeff Haran > > >

1 0

A confusion about invoking my syscall
by 王哲 June 20, 2012

June 20, 2012

Hello everyone: I append a simple syscall in kernel. and the function is as follows: asmlinkage long sys_mysyscall(long data) { printk("This is my syscall!\n"); return data; } and i test it sucessfully in user space . and the test program: #include <linux/unistd.h> #include <syscall.h> #include <sys/types.h> #include <stdio.h> int main(void) { long n = 0,m = 0,pid1,pid2; n = syscall(345,190);// #define __NR_mysyscall 345 printf("n = %ld\n",n); pid1 = syscall(SYS_getpid); //getpid printf("pid = %ld\n",pid1); pid2 = syscall(20); //getpid printf("pid = %ld\n",pid2); return 0; } and the result: n = 190 pid = 4097 pid = 4097 but if the test program is: #include <linux/unistd.h> #include <syscall.h> #include <sys/types.h> #include <stdio.h> int main(void) { long n = 0,m = 0,pid1,pid2; n = syscall(345,190);// #define __NR_mysyscall 345 printf("n = %ld\n",n); m = syscall(SYS_mysyscall,190); printf("m = %ld\n",m); pid1 = syscall(SYS_getpid); //getpid printf("pid = %ld\n",pid1); pid2 = syscall(20); //getpid printf("pid = %ld\n",pid2); return 0; } and the result: wanny@wanny-C-Notebook-XXXX:~/syscall/src$ gcc test1.c test1.c: In function ‘main’: test1.c:13:14: error: ‘SYS_mysyscall’ undeclared (first use in this function) test1.c:13:14: note: each undeclared identifier is reported only once for each function it appears in why i can't invoke my syscall with "SYS_mysyscall"? Thanks in advance!

4 7

user_mode(regs) macro in kernel
by sumeet linux June 20, 2012

June 20, 2012

Hi All, What is the meaning of user_mode(regs) macro ? What does it do ? This macro used in many files in kernel like signal.c, trap.c, process.c files. >From the code it looks like it checks is in USER mode or KERNEL mode, but still not clear on usage and implementation of this macro. Thanks. Regard, Sumeet

3 2

Re: Kernel 3.4 compile problem
by Matthias Brugger June 20, 2012

June 20, 2012

On 06/19/2012 02:43 PM, Kaan Akşit wrote: > Lieber Matthias, > > Vielen dank für ihre email :) Here is the English version of the output: > > DEPMOD 3.4.3 > DEBUG: return value for "make > INSTALL_MOD_PATH=/var/pisi/kernel-3.4.3-163/install/ DEPMOD=/bin/true > modules_install mod-fw=" is 0 > ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... > 10229 blocks > DEBUG: return value for "find . -path './include/*' -prune -o -path > './scripts/*' -prune -o -path './Documentation/*' -prune -o -type f $ > -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o -name '*.sh' > -o -name '*.pl' -o -name '*.lds' $ -print | cpio -pVd > --preserve-modification-time > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3" is 0 > DEBUG: return value for "cp -a drivers/media/dvb/dvb-core/*.h > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/drivers/media/dvb/dvb-core" > is 0 > DEBUG: return value for "cp -a drivers/media/dvb/frontends/*.h > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/drivers/media/dvb/frontends" > is 0 > DEBUG: return value for "cp -a drivers/media/video/*.h > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/drivers/media/video" > is 0 > DEBUG: return value for "cp -a include scripts Documentation > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3" is 0 > DEBUG: return value for "rm -rf > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/scripts/*.o" > is 0 > DEBUG: return value for "rm -rf > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/scripts/*/*.o" > is 0 > DEBUG: return value for "rm -rf > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/Documentation/DocBook" > is 0 > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/xtensa/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v32/arch/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v32/arch/hwregs/iop/Makefile > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v32/arch/hwregs/Makefile > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v10/arch/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/parisc/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/x86/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/hexagon/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/frv/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/blackfin/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/openrisc/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/m32r/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/sparc/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/microblaze/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/arm/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/score/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/mips/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/avr32/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/ia64/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/s390/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/alpha/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/m68k/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/c6x/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/tile/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/tile/include/arch/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/unicore32/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/mn10300/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/h8300/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/sh/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/um/include/asm/Kbuild > not created: newer or same age version exists > cpio: > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/powerpc/include/asm/Kbuild > not created: newer or same age version exists > 47168 blocks > DEBUG: return value for "(find arch -name include -type d -print | xargs > -n1 -i: find : -type f) | cpio -pd --preserve-modification-time > /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3" is 0 > DEBUG: return value for "rm -rf > /var/pisi/kernel-3.4.3-163/install/tmp-headers" is 0 > GEN /var/pisi/kernel-3.4.3-163/install/tmp-headers/Makefile > HOSTCC scripts/basic/fixdep > HOSTCC scripts/kconfig/conf.o > HOSTCC scripts/kconfig/zconf.tab.o > HOSTLD scripts/kconfig/conf > *** Default configuration is based on 'x86_64_defconfig' > # > # configuration written to .config > # > DEBUG: return value for "make -j5 > O=/var/pisi/kernel-3.4.3-163/install/tmp-headers > INSTALL_HDR_PATH=/var/pisi/kernel-3.4.3-163/install/tmp-headers/install > defconfig" is 0 > CHK include/linux/version.h > UPD include/linux/version.h > make[2]: Nothing to be done for `all'. > HOSTCC arch/x86/tools/relocs > HOSTCC scripts/unifdef > INSTALL include/asm-generic (34 files) > INSTALL include/drm (15 files) > INSTALL include/linux/byteorder (2 files) > INSTALL include/linux/caif (2 files) > INSTALL include/linux/can (5 files) > INSTALL include/linux/dvb (8 files) > INSTALL include/linux/hdlc (1 file) > INSTALL include/linux/hsi (1 file) > INSTALL include/linux/isdn (1 file) > INSTALL include/linux/mmc (1 file) > INSTALL include/linux/netfilter/ipset (4 files) > INSTALL include/linux/netfilter (75 files) > INSTALL include/linux/netfilter_arp (2 files) > INSTALL include/linux/netfilter_bridge (18 files) > INSTALL include/linux/netfilter_ipv4 (12 files) > INSTALL include/linux/netfilter_ipv6 (11 files) > INSTALL include/linux/nfsd (5 files) > INSTALL include/linux/raid (2 files) > INSTALL include/linux/spi (1 file) > INSTALL include/linux/sunrpc (1 file) > INSTALL include/linux/tc_act (7 files) > INSTALL include/linux/tc_ematch (4 files) > INSTALL include/linux/usb (10 files) > INSTALL include/linux/wimax (1 file) > INSTALL include/linux (373 files) > INSTALL include/mtd (5 files) > INSTALL include/rdma (6 files) > INSTALL include/sound (10 files) > INSTALL include/video (3 files) > INSTALL include/xen (2 files) > INSTALL include (0 file) > make[2]: *** No rule to make target > `/var/pisi/kernel-3.4.3-163/install/tmp-headers/arch/x86/include/generated/asm/unistd_32.h', > needed by > `/var/pisi/kernel-3.4.3-163/install/tmp-headers/install/include/asm/.install'. > Stop. > make[1]: *** [headers_install] Error 2 > make: *** [sub-make] Error 2 > DEBUG: return value for "make > O=/var/pisi/kernel-3.4.3-163/install/tmp-headers > INSTALL_HDR_PATH=/var/pisi/kernel-3.4.3-163/install/tmp-headers/install > headers_install" is 2 > Traceback (most recent call last): > File "/mnt/sda4/Kaan/Dökümanlarım/Özgür Çalışmalarım ve > diğerleri/kaan.aksit/2011/kernel/default/kernel/actions.py", line 39, in > install > kerneltools.installLibcHeaders() > File "/usr/lib/pardus/pisi/actionsapi/kerneltools.py", line 260, in > installLibcHeaders > autotools.rawInstall(make_cmd, "headers_install") > File "/usr/lib/pardus/pisi/actionsapi/autotools.py", line 133, in > rawInstall > if system('make %s %s' % (parameters, argument)): > File "/usr/lib/pardus/pisi/actionsapi/shelltools.py", line 255, in system > error(_("Command \"%s\" failed, return value was %d.") % (command, > retValue)) > File "/usr/lib/pardus/pisi/actionsapi/__init__.py", line 27, in error > raise Error(msg) > pisi.actionsapi.Error: Command "make > O=/var/pisi/kernel-3.4.3-163/install/tmp-headers > INSTALL_HDR_PATH=/var/pisi/kernel-3.4.3-163/install/tmp-headers/install > headers_install" failed, return value was 2. > Action script error caught. > *** 1 error(s), 1 warning(s) > Program terminated. > Please use 'pisi help' for general help. I don't have a clue, but maybe because you didn't compile as root (sudo)? > > Best regards, > Kaan

2 1

How does SACK or FACK determine the time to start fast retransmition ?
by 李易 June 20, 2012

June 20, 2012

HI all, When tcp uses reno as its congestion control algothim, it uses tp->sacked_out as dup-ack. When the third dup-ack(under default condition) comes, tcp will initiate its fast retransmition. But how about sack ? According to kernel source code comments, when sack or fack tcp option is enabled, there is no dup-ack counter. See comments for function tcp_dupack_heuristics(): http://lxr.linux.no/linux+v2.6.37/net/ipv4/tcp_input.c#L2300 So , how does tcp know the current dup-ack is the last one which triggers the fast retransmition? According to rfc3517 section 5: "Upon the receipt of the first (DupThresh - 1) duplicate ACKs, the scoreboard is to be updated as normal." "When a TCP sender receives the duplicate ACK corresponding to DupThresh ACKs, the scoreboard MUST be updated with the new SACK information (via Update ()). If no previous loss event has occurred on the connection or the cumulative acknowledgment point is beyond the last value of RecoveryPoint, a loss recovery phase SHOULD be initiated, per the fast retransmit algorithm outlined in [RFC2581]." But these sentences doesn't describe how tcp knows the current ack is the dup-threshold dup-ack. Accorrding to rfc3517 seciton 4 and isLost(Seqnum) function: "The routine returns true when either DupThresh discontiguous SACKed sequences have arrived above ’SeqNum’ or (DupThresh * SMSS) bytes with sequence numbers greater than ’SeqNum’ have been SACKed. Otherwise, the routine returns false." I think this is just what I am searching for, but I still don't know which line of code in Linux tcp protocol does this check. Can any one help me ? thks in advance.

1 0

identity mapped paging
by Vaibhav Jain June 19, 2012

June 19, 2012

I am not clear about the use of identity mapped paging while paging is being enabled by the operating system. Also I don't understand at what point are the identity mappings no longer useful.According to this article http://geezer.osdevbrasil.net/osd/mem/index.htm#identity - "The page table entries used to identity-map kernel memory can be deleted once paging and virtual addresses are enabled." Can somebody please explain? Thanks Vaibhav Jain

3 2

Kernel 3.4 compile problem
by Kaan Akşit June 19, 2012

June 19, 2012

Dear all, I am a newbie who try to solve a problem on compiling new kernel on my computer. Here is the point where I am stuck; I can configure and compile kernel without any error, but whenever I try to install libc headers I keep receiving the error below: I have the devel package installed for my existing kernel, I could not understand what I am doing wrong: DEBUG: "make INSTALL_MOD_PATH=/var/pisi/kernel-3.4.3-163/install/ DEPMOD=/bin/true modules_install mod-fw=" dönüş değeri 0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 10229 blok DEBUG: "find . -path './include/*' -prune -o -path './scripts/*' -prune -o -path './Documentation/*' -prune -o -type f $ -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o -name '*.sh' -o -name '*.pl' -o -name '*.lds' $ -print | cpio -pVd --preserve-modification-time /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3" dönüş değeri 0 DEBUG: "cp -a drivers/media/dvb/dvb-core/*.h /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/drivers/media/dvb/dvb-core" dönüş değeri 0 DEBUG: "cp -a drivers/media/dvb/frontends/*.h /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/drivers/media/dvb/frontends" dönüş değeri 0 DEBUG: "cp -a drivers/media/video/*.h /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/drivers/media/video" dönüş değeri 0 DEBUG: "cp -a include scripts Documentation /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3" dönüş değeri 0 DEBUG: "rm -rf /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/scripts/*.o" dönüş değeri 0 DEBUG: "rm -rf /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/scripts/*/*.o" dönüş değeri 0 DEBUG: "rm -rf /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/Documentation/DocBook" dönüş değeri 0 cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/xtensa/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v32/arch/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v32/arch/hwregs/iop/Makefile oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v32/arch/hwregs/Makefile oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/cris/include/arch-v10/arch/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/parisc/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/x86/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/hexagon/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/frv/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/blackfin/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/openrisc/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/m32r/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/sparc/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/microblaze/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/arm/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/score/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/mips/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/avr32/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/ia64/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/s390/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/alpha/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/m68k/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/c6x/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/tile/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/tile/include/arch/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/unicore32/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/mn10300/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/h8300/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/sh/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/um/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut cpio: /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3/arch/powerpc/include/asm/Kbuild oluşturulmadı: daha yeni ya da aynı yaşta sürümü mevcut 47168 blok DEBUG: "(find arch -name include -type d -print | xargs -n1 -i: find : -type f) | cpio -pd --preserve-modification-time /var/pisi/kernel-3.4.3-163/install/usr/src/linux-headers-3.4.3" dönüş değeri 0 DEBUG: "rm -rf /var/pisi/kernel-3.4.3-163/install/tmp-headers" dönüş değeri 0 GEN /var/pisi/kernel-3.4.3-163/install/tmp-headers/Makefile HOSTCC scripts/basic/fixdep HOSTCC scripts/kconfig/conf.o HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/conf *** Default configuration is based on 'x86_64_defconfig' # # configuration written to .config # DEBUG: "make -j5 O=/var/pisi/kernel-3.4.3-163/install/tmp-headers INSTALL_HDR_PATH=/var/pisi/kernel-3.4.3-163/install/tmp-headers/install defconfig" dönüş değeri 0 CHK include/linux/version.h UPD include/linux/version.h make[2]: `all' için hiçbir şey yapılmadı. HOSTCC arch/x86/tools/relocs HOSTCC scripts/unifdef INSTALL include/asm-generic (34 files) INSTALL include/drm (15 files) INSTALL include/linux/byteorder (2 files) INSTALL include/linux/caif (2 files) INSTALL include/linux/can (5 files) INSTALL include/linux/dvb (8 files) INSTALL include/linux/hdlc (1 file) INSTALL include/linux/hsi (1 file) INSTALL include/linux/isdn (1 file) INSTALL include/linux/mmc (1 file) INSTALL include/linux/netfilter/ipset (4 files) INSTALL include/linux/netfilter (75 files) INSTALL include/linux/netfilter_arp (2 files) INSTALL include/linux/netfilter_bridge (18 files) INSTALL include/linux/netfilter_ipv4 (12 files) INSTALL include/linux/netfilter_ipv6 (11 files) INSTALL include/linux/nfsd (5 files) INSTALL include/linux/raid (2 files) INSTALL include/linux/spi (1 file) INSTALL include/linux/sunrpc (1 file) INSTALL include/linux/tc_act (7 files) INSTALL include/linux/tc_ematch (4 files) INSTALL include/linux/usb (10 files) INSTALL include/linux/wimax (1 file) INSTALL include/linux (373 files) INSTALL include/mtd (5 files) INSTALL include/rdma (6 files) INSTALL include/sound (10 files) INSTALL include/video (3 files) INSTALL include/xen (2 files) INSTALL include (0 file) make[2]: *** Hedef `/var/pisi/kernel-3.4.3-163/install/tmp-headers/arch/x86/include/generated/asm/unistd_32.h' i derlemek için hiçbir kural yok, `/var/pisi/kernel-3.4.3-163/install/tmp-headers/install/include/asm/.install' tarafından gereksinim duyuluyor. Durdu. make[1]: *** [headers_install] Hata 2 make: *** [sub-make] Hata 2 DEBUG: "make O=/var/pisi/kernel-3.4.3-163/install/tmp-headers INSTALL_HDR_PATH=/var/pisi/kernel-3.4.3-163/install/tmp-headers/install headers_install" dönüş değeri 2 Traceback (most recent call last): File "/mnt/sda4/Kaan/Dökümanlarım/Özgür Çalışmalarım ve diğerleri/kaan.aksit/2011/kernel/default/kernel/actions.py", line 39, in install kerneltools.installLibcHeaders() File "/usr/lib/pardus/pisi/actionsapi/kerneltools.py", line 260, in installLibcHeaders autotools.rawInstall(make_cmd, "headers_install") File "/usr/lib/pardus/pisi/actionsapi/autotools.py", line 133, in rawInstall if system('make %s %s' % (parameters, argument)): File "/usr/lib/pardus/pisi/actionsapi/shelltools.py", line 255, in system error(_("Command \"%s\" failed, return value was %d.") % (command, retValue)) File "/usr/lib/pardus/pisi/actionsapi/__init__.py", line 27, in error raise Error(msg) pisi.actionsapi.Error: "make O=/var/pisi/kernel-3.4.3-163/install/tmp-headers INSTALL_HDR_PATH=/var/pisi/kernel-3.4.3-163/install/tmp-headers/install headers_install" komutu başarısız oldu, dönüş değeri: 2 . Best regards, Kaan

3 2

Re: Journey of a network packet through linux 2.6 network stack
by AFT June 19, 2012

June 19, 2012

Pablo Neira Ayuso <pablo(a)netfilter.org> writes: > On Tue, Jun 19, 2012 at 04:25:01PM +0600, AFT wrote: >> >> Hi, >> >> A document with this heading can be found for 2.4 network stack. But i >> have not found any document regarding 2.6 network stack. >> >> When i was searching netfilter mailing list archive, i got the following >> post : >> >> http://lists.netfilter.org/pipermail/netfilter/2007-august/069583.html >> >> in this post author mentioned about a document named after this. but >> does not gave any link to that document. >> >> so i'm wondering if any similar document can be found? > > You've got Linux Networking internals. > > http://shop.oreilly.com/product/9780596002558.do > > It's pretty think, but it provides some panoramic. As kernel code > evolves quite quickly, you may find that some things have changed, but > it's a good base to start with if you're looking for an alternative to > reading pure code. Hi Pablo, I have a scanned pdf of Linux kernel internals. But i stopped reading when i found out struct sk_buff does not have a member struct sk_buff_head * list like the book mentioned. It turns out its removed in 2.6.14/15 series where the book references a earlier code. On the plus side this made me set up cscope in my emacs. So i guess i should thank the book for this. Cheers.

1 0

Re: Journey of a network packet through linux 2.6 network stack
by AFT June 19, 2012

June 19, 2012

Jan Engelhardt <jengelh(a)inai.de> writes: > On Tuesday 2012-06-19 12:25, AFT wrote: > >> >>Hi, >> >>A document with this heading can be found for 2.4 network stack. But i >>have not found any document regarding 2.6 network stack. >> >>When i was searching netfilter mailing list archive, i got the following >>post : >> >>http://lists.netfilter.org/pipermail/netfilter/2007-august/069583.html >> >>in this post author mentioned about a document named after this. but >>does not gave any link to that document. > > Your link gives a 404. Its because of a accidental "C-x C-u' followed by "C-x C-l" to fix it. cheers.

1 0

Re: Journey of a network packet through linux 2.6 network stack
by AFT June 19, 2012

June 19, 2012

Jan Engelhardt <jengelh(a)inai.de> writes: > On Tuesday 2012-06-19 13:10, Jan Engelhardt wrote: > >>On Tuesday 2012-06-19 12:25, AFT wrote: >>> >>>A document with this heading can be found for 2.4 network stack. But i >>>have not found any document regarding 2.6 network stack. >>> >>>When i was searching netfilter mailing list archive, i got the following >>>post : >>> >>>http://lists.netfilter.org/pipermail/netfilter/2007-August/069583.html >>> >>>in this post author mentioned about a document named after this. but >>>does not gave any link to that document. >>> >>>so i'm wondering if any similar document can be found? >> >> >>http://en.wikipedia.org/wiki/Netfilter >>http://en.wikipedia.org/wiki/iptables > > And if you actually did a Google search, you would have found a copy of > it, cached by Baidu on two seaprate pages. > > http://hi.baidu.com/john_len_dead_dance/blog/item/b85af87289b9e2128601b051.… > http://hi.baidu.com/john_len_dead_dance/blog/item/b85af87289b9e2128601b051.… I've done the google search actually. But i got put off by "baidu". anything chineese gets me to press X button. I didn't think i will get a valuable life lesson in kernewbies. Next time i will give chineese a chance. :) > > It even mentions its source file: > http://svn.gnumonks.org/trunk/doc/packet-journey-2.6.xml I have found out some more comprehensive document than this. I will post those link for anyone who is also searching archives for the same documents. Cheers

1 0