l4-hackers April 2009

l4-hackers@os.inf.tu-dresden.de

19 participants
40 discussions

Urgent help needed>> please tell us what menu.lst do we need for usbhid application
by tapas kundu 08 Apr '09

08 Apr '09

Hi ALL, We are student of IIT Delhi. We are trying to build a usb webcam application and ext2 file system driver on L4. We have seen an *application USBHID directory* under L4/pkg downloaded from svn . Could anybody let us know how to use this application. Please also let us know the required menu.lst file to use this application . 1) Please also describe required menu.lst file to use dde, dde_linux26, dope, drop,loader together . 2) Could any body tell us what is the difference between dde and dde_linux26 application found in svn ? 3) Please also tell us how to use these to build an usb device driver. Thanks & Regards, TAPAS KUMAR KUNDU

2 4

Fiasco Kernel: Trap=03
by Marcel Selhorst 07 Apr '09

07 Apr '09

Hi, In order to increase the Fiasco performance, I removed all debug-stuff from the kernel. But as soon as I remove the JDB, I receive a kernel trap on all starting apps: 2.00 IP=00103480 Trap=03 [Ret/Esc] 4.00 IP=00112bc0 Trap=03 [Ret/Esc] Do you know what might cause these traps? Attached is my fiasco.config and below some more output... *snip* Welcome to Fiasco(ia32)! DD-L4(v2)/ia32 microkernel (C) 1998-2008 TU Dresden Rev: r6951 compiled with gcc 4.1.2 for Intel Pentium [] Enabling special fully nested mode for PIC Using the PIT (i8254) on IRQ 0 for scheduling Absolute KIP Syscalls using: Sysenter CPU: GenuineIntel (6:F:A:0) Model: Core 2 (Merom) at 1582 MHz 128 Entry I TLB (4K pages) 272 Entry D TLB (4K pages) 48 Entry D TLB (4M pages) 32 KB L1 I Cache (8-way associative, 64 bytes per line) 32 KB L1 D Cache (8-way associative, 64 bytes per line) 4096 KB L2 U Cache (16-way associative, 64 bytes per line) Freeing init code/data: 16384 bytes (4 pages) Calibrating timer loop... done. SIGMA0: Hello! KIP @ 1000 * 2.00 IP=00103480 Trap=03 [Ret/Esc] * Found Fiasco: KIP syscalls: yes allocated 4KB for maintenance structures Roottask. Command line found: "(cd)/tcb/roottask -configfile -sigma0 task modname "bmodfs" attached 8 modules" 1048127kB (1023MB) total RAM (reported by bootloader) 980376kB ( 958MB) received RAM from Sigma0 71732kB ( 71MB) reserved RAM for RMGR Received I/O ports 0000-ffff Attached irqs = [ <!0> 1 <!2> 3 4 5 6 7 8 9 A B C D E F <!10> <!11> ] Roottask: Parsing config file. configured task 0x02 (): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x04 (): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (rtc): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:1 mcp:ff prio:10 small:ff mods:0 configured task 0x00 (names): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (dm_phys): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (simple_ts): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (l4exec): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:1 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (l4io): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:1 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (mgui): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:1 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (loader): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:1 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (l4dope): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:1 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (compmgrlientl4): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (compmgr): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (names_demo): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (bmodfs): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (events): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 configured task 0x00 (pmngr): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:a0 small:ff mods:0 Roottask: Parsing command line config. configured task 0x00 (bmodfs): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:10 small:ff mods:8 Roottask: Loading 17 modules. #05: loading "(cd)/tcb/names" from [02100000-02143637] to [002d0000-002d6917][002d7000-002e2000] entry at 00020068 via trampoline page code * 4.00 IP=00112bc0 Trap=03 [Ret/Esc] * [...] *snip* -- Sirrix AG security technologies - http://www.sirrix.com Marcel Selhorst eMail: m.selhorst(a)sirrix.com Tel +49(234) 61 0071-199 Fax +49(234) 61 0071-599 get my public key from keyserver, key id: 0x7C9821CC Fingerprint 4138 E617 E62E 79D3 E663 BE5A 14E7 1CD8 7C98 21CC Vorstand: Ammar Alkassar (Vors.), Ahmad-Reza Sadeghi, Christian Stüble Vorsitzender des Aufsichtsrates: Prof. Dr. Kai Rannenberg Sitz der Gesellschaft: Homburg/Saar, HRB 3857 Amtsgericht Saarbrücken This message may contain confidential and/or privileged information. If you are not the addressee, you must not use, copy, disclose or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. # # Automatically generated make config: don't edit # Fiasco kernel version: SVN # Mon Apr 6 14:19:22 2009 # # # Target configuration # CONFIG_IA32=y # CONFIG_AMD64 is not set # CONFIG_ARM is not set CONFIG_PF_PC=y # CONFIG_PF_UX is not set # CONFIG_PF_REALVIEW is not set # CONFIG_PF_INTEGRATOR is not set # CONFIG_PF_XSCALE is not set # CONFIG_PF_SA1100 is not set CONFIG_ABI_V2=y # CONFIG_ARM_PXA is not set # CONFIG_ARM_SA is not set # CONFIG_ARM_920T is not set # CONFIG_ARM_926 is not set # CONFIG_ARM_1176 is not set # CONFIG_ARM_MPCORE is not set # CONFIG_ARM_CORTEX_A8 is not set # CONFIG_IA32_486 is not set CONFIG_IA32_586=y # CONFIG_IA32_686 is not set # CONFIG_IA32_P2 is not set # CONFIG_IA32_P3 is not set # CONFIG_IA32_P4 is not set # CONFIG_IA32_PM is not set # CONFIG_IA32_K6 is not set # CONFIG_IA32_K7 is not set # CONFIG_IA32_K8 is not set # CONFIG_AMD64_K8 is not set CONFIG_SCHED_PIT=y # CONFIG_SCHED_RTC is not set # CONFIG_SCHED_APIC is not set # CONFIG_WORKAROUND_AMD_FPU_LEAK is not set CONFIG_REGPARM3=y # # Kernel options # CONFIG_HANDLE_SEGMENTS=y # CONFIG_PL0_HACK is not set # CONFIG_TASK_CAPS is not set CONFIG_ASSEMBLER_IPC_SHORTCUT=y CONFIG_CONTEXT_4K=y CONFIG_IO_PROT=y # CONFIG_IO_PROT_IOPL_3 is not set # CONFIG_SYNC_TSC is not set # CONFIG_FINE_GRAINED_CPUTIME is not set # # Debugging # CONFIG_INLINE=y CONFIG_NDEBUG=y CONFIG_NO_FRAME_PTR=y # CONFIG_STACK_DEPTH is not set # CONFIG_LIST_ALLOC_SANITY is not set # CONFIG_BEFORE_IRET_SANITY is not set # CONFIG_GSTABS is not set # CONFIG_WATCHDOG is not set # CONFIG_SERIAL is not set # CONFIG_JDB is not set CONFIG_POWERSAVE_GETCHAR=y CONFIG_WARN_NONE=y # CONFIG_WARN_WARNING is not set # CONFIG_WARN_ANY is not set # # Compiling # CONFIG_CC="gcc" CONFIG_CXX="g++" CONFIG_HOST_CC="gcc" CONFIG_HOST_CXX="g++" # CONFIG_VERBOSE is not set # CONFIG_MAINTAINER_MODE is not set CONFIG_LABEL="" CONFIG_EXPERIMENTAL=y CONFIG_BIT32=y CONFIG_WARN_LEVEL=0 CONFIG_XARCH="ia32" CONFIG_IA32_TARGET="Intel Pentium" CONFIG_ABI="v2" CONFIG_DECEIT_BIT_DISABLES_SWITCH=y

3 3

USB Keyboard and l4con
by Alexander Valitov 06 Apr '09

06 Apr '09

Hi, I've got the problem. l4con doesn't work with USB keyboard. It occurs with L4linux+l4con and even with simple txtmode con applications. "USB legacy support" is turned on. Here is how l4con complains: C.05:con | atkbd.c: Unknown key pressed (translated set 2, code 0x66 on is a0060/ C.05:con : serio0). C.05:con | atkbd.c: Use 'setkeycodes 66 <keycode>' to make it known. C.05:con | atkbd.c: Unknown key pressed (translated set 2, code 0x66 on is a0060/ How could it be solved? Best Regards, Alexander Valitov -- View this message in context: http://www.nabble.com/USB-Keyboard-and-l4con-tp22821747p22821747.html Sent from the L4 mailing list archive at Nabble.com.

2 3

x86_64?
by Xavian-Anderson Macpherson 06 Apr '09

06 Apr '09

1. Is it possible to compile any of these tools for x86_64? Xavian-Anderson Macpherson Shingoshi --

2 3

Re: l4ts_free_task()
by Alexander Boettcher 06 Apr '09

06 Apr '09

1 0

Urgent help needed .. for svn revision 444 . it seems to a bug.. please solve as soon as possible.
by tapas kundu 05 Apr '09

05 Apr '09

Hi ALL I am a student of IIT Dellhi. I am working on a project to build usb webcam driver and ex2 filesystem driver for L4. I have compiled loaders downloaded from svn repository on 5th April 1:00 AM IST ,svn revision 444. I am using following gcc version 4.3.2 and ubuntu 8.10 linux. root@tapas-laptop:/home/tapas/tudos/l4# gcc --version gcc (Ubuntu 4.3.2-1ubuntu12) 4.3.2 Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. root@tapas-laptop:/home/tapas/tudos/l4# I had run following commands to compile all modules: $sudo su $svn checkout -N http://svn.tudos.org/repos/tudos/trunk tudos $cd tudos $./repomgr co dice fiasco hello l4env $cd l4/pkg/ $svn up dope $svn up linux-26-headers $svn up dde_linux26 $svn up l4ide $svn up ore then i have tried to compile : $make -C l4 O=/home/tapas/5thAprilUserbuild oldconfig $cd l4/ $make O=/home/tapas/5thAprilUserbuild after running above commands , it gives an error like this below: ==> "dump-l4" built ==> Installing dump-l4 to local build-tree install -d /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/ install -m 755 dump-l4 /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/dump-l4 make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/dump-l4/OBJ-x86_586-l4v2' make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples/dump-l4' test -f fprov-l4/broken -o -f fprov-l4/obsolete || \ if [ -f fprov-l4/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4 make -C fprov-l4 ; fi make[4]: Entering directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' ... Building /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/.general.d make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' make[4]: Entering directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' install -d /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile PWD=/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2 make -C /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2 -f Makefile make[5]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' ... Building .general.d ... Building Makefile.inc make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' make[5]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' ... Compiling main.o LD_PRELOAD=/home/tapas/5thAprilUserbuild/tool/gendep/libgendep.so GENDEP_TARGET=main.o GENDEP_BINARY=cc1 gcc -m32 -c -DUSE_UCLIBC=y -DRAM_BASE=0x0 -DSYSTEM_x86_586_l4v2 -DARCH_x86 -DCPUTYPE_586 -DL4API_l4v2 -DCONFIG_L4_CALL_SYSCALLS -DCONFIG_L4_ABS_SYSCALLS -I/home/tapas/5thAprilUserbuild/pkg/loader/idl/OBJ-x86-l4v2 -I/home/tapas/5thAprilUserbuild/include/x86/l4v2 -I/home/tapas/5thAprilUserbuild/include/l4v2 -I/home/tapas/5thAprilUserbuild/include/x86 -I/home/tapas/5thAprilUserbuild/include -I/home/tapas/tudos/l4/../dice/include -I/home/drops/include/x86/l4v2 -I/home/drops/include/l4v2 -I/home/drops/include/x86 -I/home/drops/include -I/usr/lib/gcc/i486-linux-gnu/4.3.2/include -I/usr/lib/gcc/i486-linux-gnu/4.3.2/include-fixed -gstabs+ -g -O2 -fno-strict-aliasing -march=i586 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -fno-common -fno-stack-protector /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4/main.c -o main.o In function ‘open’, inlined from ‘l4fprov_file_ext_write_component’ at /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4/main.c:117: /usr/include/bits/fcntl2.h:51: error: call to ‘__open_missing_mode’ declared with attribute error: open with O_CREAT in second argument needs 3 arguments make[5]: *** [main.o] Error 1 make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' make[4]: *** [/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2] Error 2 make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' make[3]: *** [fprov-l4] Error 2 make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples' make[2]: *** [examples] Error 2 make[2]: Leaving directory `/home/tapas/tudos/l4/pkg/loader' make[1]: *** [loader.bin] Error 2 make[1]: Leaving directory `/home/tapas/tudos/l4/pkg' make: *** [pkg] Error 2 To solve this problem . I have modified line 117 of /home/tapas/tudos/l4/pkg/loader/examples/dump-l4/main.c fd = open(fname, O_CREAT | O_APPEND | O_RDWR ); to "fd = open(fname, O_CREAT | O_APPEND | O_RDWR ,0664);" but I am not sure whether it is correct or not. After modifying above line , I have run $make O=/home/tapas/5thAprilUserbuild again. But it gives another error like : ==> "l4dope" built ==> Installing l4dope to local build-tree install -d /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/ install -m 755 l4dope /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/l4dope make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/dope/server/l4/OBJ-x86_586-l4v2' make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server/l4' test -f linux/broken -o -f linux/obsolete || \ if [ -f linux/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/server/linux make -C linux ; fi make[4]: Entering directory `/home/tapas/tudos/l4/pkg/dope/server/linux' ... Building /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/.general.d make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server/linux' make[4]: Entering directory `/home/tapas/tudos/l4/pkg/dope/server/linux' install -d /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/server/linux' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server/linux' make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server' test -f examples/broken -o -f examples/obsolete || \ if [ -f examples/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/examples make -C examples ; fi make[3]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples' install -d /home/tapas/5thAprilUserbuild/pkg/dope/examples/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/examples' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile test -f dopecmd/broken -o -f dopecmd/obsolete || \ if [ -f dopecmd/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/examples/dopecmd make -C dopecmd ; fi make[4]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd' install -d /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/examples/dopecmd' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile test -f l4/broken -o -f l4/obsolete || \ if [ -f l4/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4 make -C l4 ; fi make[5]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' ... Building /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/.general.d make[5]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' make[5]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' install -d /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile PWD=/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2 make -C /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2 -f Makefile make[6]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' ... Building .general.d ... Building Makefile.inc make[6]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' make[6]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' ... Generating simpleterm.dpi LD_PRELOAD=/home/tapas/5thAprilUserbuild/tool/gendep/libgendep.so GENDEP_TARGET=simpleterm.dpi GENDEP_BINARY=perl /home/tapas/tudos/l4/tool/gen_dopecode/gen_dopecode /home/tapas/tudos/l4/pkg/dope/examples/dopecmd/common/simpleterm.dpe >simpleterm.dpi /bin/bash: /home/tapas/tudos/l4/tool/gen_dopecode/gen_dopecode: No such file or directory make[6]: *** [simpleterm.dpi] Error 127 make[6]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' make[5]: *** [/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2] Error 2 make[5]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' make[4]: *** [l4] Error 2 make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd' make[3]: *** [dopecmd] Error 2 make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples' make[2]: *** [examples] Error 2 make[2]: Leaving directory `/home/tapas/tudos/l4/pkg/dope' make[1]: *** [dope.bin] Error 2 make[1]: Leaving directory `/home/tapas/tudos/l4/pkg' make: *** [pkg] Error 2 root@tapas-laptop:/home/tapas/tudos/l4# This seems to me that some files are not available or deleted from svn . Please correct these two errors. And also let us know correct solution as soon as possible. Please also let us know how can we get stable versions of dice ,fiasco ,hello ,l4env, dope, linux-26-headers, dde_linux26 ,l4ide, ore. Please also let us know menu.lst file for dope with l4env,hello, loader, dde_linux26,l4ide,ore . This seems to me a bug .. Please solve as soon as possible. We need the loader and other modules for our work as soon as possible. We have a plan to build usb webcam and ex2 filesystem driver as soon as possible.

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l4ts_free_task()
by Marcel Selhorst 05 Apr '09

05 Apr '09

Hi List, I have another question regarding L4Linux and IPC. Whenever I perform IPC-communication, I get the following debug output: l4lx| l4ts_free_task(): Could not return task. This message is repeated twice on every IPC-call. What is the cause of this and how do I get rid of this? ;) Thanks in advance! Marcel Selhorst -- Sirrix AG security technologies - http://www.sirrix.com Marcel Selhorst eMail: m.selhorst(a)sirrix.com Tel +49(234) 61 0071-199 Fax +49(234) 61 0071-599 get my public key from keyserver, key id: 0x7C9821CC Fingerprint 4138 E617 E62E 79D3 E663 BE5A 14E7 1CD8 7C98 21CC Vorstand: Ammar Alkassar (Vors.), Ahmad-Reza Sadeghi, Christian Stüble Vorsitzender des Aufsichtsrates: Prof. Dr. Kai Rannenberg Sitz der Gesellschaft: Homburg/Saar, HRB 3857 Amtsgericht Saarbrücken This message may contain confidential and/or privileged information. If you are not the addressee, you must not use, copy, disclose or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message.

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Urgent help needed .. for svn revision 444 . it seems to a bug.. please solve as soon as possible.
by tapas kundu 04 Apr '09

04 Apr '09

*I am a student of IIT Dellhi. I am working on a project to build usb webcam driver and ex2 filesystem driver for L4. I have compiled loaders downloaded from svn repository on 5th April 1:00 AM IST ,svn revision 444. I am using following gcc version 4.3.2 and ubuntu 8.10 linux.* root@tapas-laptop:/home/tapas/tudos/l4# gcc --version gcc (Ubuntu 4.3.2-1ubuntu12) 4.3.2 Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. root@tapas-laptop:/home/tapas/tudos/l4# * I had run following commands to compile all modules:* $sudo su $svn checkout -N http://svn.tudos.org/repos/tudos/trunk tudos $cd tudos $./repomgr co dice fiasco hello l4env $cd l4/pkg/ $svn up dope $svn up linux-26-headers $svn up dde_linux26 $svn up l4ide $svn up ore then i have tried to compile : $make -C l4 O=/home/tapas/5thAprilUserbuild oldconfig $cd l4/ $make O=/home/tapas/5thAprilUserbuild after running above commands , it gives an error like this below: ==> "dump-l4" built ==> Installing dump-l4 to local build-tree install -d /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/ install -m 755 dump-l4 /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/dump-l4 make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/dump-l4/OBJ-x86_586-l4v2' make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples/dump-l4' test -f fprov-l4/broken -o -f fprov-l4/obsolete || \ if [ -f fprov-l4/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4 make -C fprov-l4 ; fi make[4]: Entering directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' ... Building /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/.general.d make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' make[4]: Entering directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' install -d /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/Makefile PWD=/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2 make -C /home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2 -f Makefile make[5]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' ... Building .general.d ... Building Makefile.inc make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' make[5]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' ... Compiling main.o LD_PRELOAD=/home/tapas/5thAprilUserbuild/tool/gendep/libgendep.so GENDEP_TARGET=main.o GENDEP_BINARY=cc1 gcc -m32 -c -DUSE_UCLIBC=y -DRAM_BASE=0x0 -DSYSTEM_x86_586_l4v2 -DARCH_x86 -DCPUTYPE_586 -DL4API_l4v2 -DCONFIG_L4_CALL_SYSCALLS -DCONFIG_L4_ABS_SYSCALLS -I/home/tapas/5thAprilUserbuild/pkg/loader/idl/OBJ-x86-l4v2 -I/home/tapas/5thAprilUserbuild/include/x86/l4v2 -I/home/tapas/5thAprilUserbuild/include/l4v2 -I/home/tapas/5thAprilUserbuild/include/x86 -I/home/tapas/5thAprilUserbuild/include -I/home/tapas/tudos/l4/../dice/include -I/home/drops/include/x86/l4v2 -I/home/drops/include/l4v2 -I/home/drops/include/x86 -I/home/drops/include -I/usr/lib/gcc/i486-linux-gnu/4.3.2/include -I/usr/lib/gcc/i486-linux-gnu/4.3.2/include-fixed -gstabs+ -g -O2 -fno-strict-aliasing -march=i586 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -fno-common -fno-stack-protector /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4/main.c -o main.o In function ‘open’, inlined from ‘l4fprov_file_ext_write_component’ at /home/tapas/tudos/l4/pkg/loader/examples/fprov-l4/main.c:117: /usr/include/bits/fcntl2.h:51: error: call to ‘__open_missing_mode’ declared with attribute error: open with O_CREAT in second argument needs 3 arguments make[5]: *** [main.o] Error 1 make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2' make[4]: *** [/home/tapas/5thAprilUserbuild/pkg/loader/examples/fprov-l4/OBJ-x86_586-l4v2] Error 2 make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples/fprov-l4' make[3]: *** [fprov-l4] Error 2 make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/loader/examples' make[2]: *** [examples] Error 2 make[2]: Leaving directory `/home/tapas/tudos/l4/pkg/loader' make[1]: *** [loader.bin] Error 2 make[1]: Leaving directory `/home/tapas/tudos/l4/pkg' make: *** [pkg] Error 2 To solve this problem . I have modified line 117 of /home/tapas/tudos/l4/pkg/loader/examples/dump-l4/main.c fd = open(fname, O_CREAT | O_APPEND | O_RDWR ); to "fd = open(fname, O_CREAT | O_APPEND | O_RDWR ,0664);" *but I am not sure whether it is correct or not. After modifying above line , I have run $make O=/home/tapas/**5thAprilUserbuild again. But it gives another error like :* ==> "l4dope" built ==> Installing l4dope to local build-tree install -d /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/ install -m 755 l4dope /home/tapas/5thAprilUserbuild/bin/x86_586/l4v2/l4dope make[5]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/dope/server/l4/OBJ-x86_586-l4v2' make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server/l4' test -f linux/broken -o -f linux/obsolete || \ if [ -f linux/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/server/linux make -C linux ; fi make[4]: Entering directory `/home/tapas/tudos/l4/pkg/dope/server/linux' ... Building /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/.general.d make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server/linux' make[4]: Entering directory `/home/tapas/tudos/l4/pkg/dope/server/linux' install -d /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/server/linux' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/server/linux/Makefile make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server/linux' make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/server' test -f examples/broken -o -f examples/obsolete || \ if [ -f examples/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/examples make -C examples ; fi make[3]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples' install -d /home/tapas/5thAprilUserbuild/pkg/dope/examples/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/examples' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/examples/Makefile test -f dopecmd/broken -o -f dopecmd/obsolete || \ if [ -f dopecmd/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/examples/dopecmd make -C dopecmd ; fi make[4]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd' install -d /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/examples/dopecmd' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/Makefile test -f l4/broken -o -f l4/obsolete || \ if [ -f l4/Makefile ] ; then PWD=/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4 make -C l4 ; fi make[5]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' ... Building /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/.general.d make[5]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' make[5]: Entering directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' install -d /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/ echo '# automatically created -- modifications will be lost' > /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo 'SRC := /home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo 'OBJ := /home/tapas/5thAprilUserbuild' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo '.PHONY: x $(MAKECMDGOALS)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo 'x:' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ)' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo '$(MAKECMDGOALS):' >> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile echo ' PWD=$(SRC) $(MAKE) -C $(SRC) O=$(OBJ) $@'>> /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/Makefile PWD=/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2 make -C /home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2 -f Makefile make[6]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' ... Building .general.d ... Building Makefile.inc make[6]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' make[6]: Entering directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' ... Generating simpleterm.dpi LD_PRELOAD=/home/tapas/5thAprilUserbuild/tool/gendep/libgendep.so GENDEP_TARGET=simpleterm.dpi GENDEP_BINARY=perl /home/tapas/tudos/l4/tool/gen_dopecode/gen_dopecode /home/tapas/tudos/l4/pkg/dope/examples/dopecmd/common/simpleterm.dpe >simpleterm.dpi /bin/bash: /home/tapas/tudos/l4/tool/gen_dopecode/gen_dopecode: No such file or directory make[6]: *** [simpleterm.dpi] Error 127 make[6]: Leaving directory `/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2' make[5]: *** [/home/tapas/5thAprilUserbuild/pkg/dope/examples/dopecmd/l4/OBJ-x86_586-l4v2] Error 2 make[5]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd/l4' make[4]: *** [l4] Error 2 make[4]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples/dopecmd' make[3]: *** [dopecmd] Error 2 make[3]: Leaving directory `/home/tapas/tudos/l4/pkg/dope/examples' make[2]: *** [examples] Error 2 make[2]: Leaving directory `/home/tapas/tudos/l4/pkg/dope' make[1]: *** [dope.bin] Error 2 make[1]: Leaving directory `/home/tapas/tudos/l4/pkg' make: *** [pkg] Error 2 root@tapas-laptop:/home/tapas/tudos/l4# This seems to me that some files are not available or deleted from svn . Please correct these two errors. And also let us know correct solution as soon as possible. *Please also let us know how can we get stable versions of dice ,fiasco ,hello ,l4env, dope, linux-26-headers, dde_linux26 ,l4ide, ore. * *Please also let us know menu.lst file for dope with l4env,hello, loader, dde_linux26,l4ide,ore . * This seems to me a bug .. Please solve as soon as possible. We need the loader and other modules for our work as soon as possible. *We have a plan to build usb webcam and ex2 filesystem driver as soon as possible.*

1 0

Check out my photos on Facebook
by John Van V. 04 Apr '09

04 Apr '09

Hi L4-hackers, I set up a Facebook profile where I can post my pictures, videos and events and I want to add you as a friend so you can see it. First, you need to join Facebook! Once you join, you can also create your own profile. Thanks, John To sign up for Facebook, follow the link below: http://www.facebook.com/p.php?i=588889670&k=44G4X3QRSX2M5A1AVB43TR&r l4-hackers(a)os.inf.tu-dresden.de was invited to join Facebook by John Van V. If you do not wish to receive this type of email from Facebook in the future, please click on the link below to unsubscribe. http://www.facebook.com/o.php?k=e8ecd4&u=1341702056&mid=41be4aG4ff8bfa8G0G8 Facebook's offices are located at 156 University Ave., Palo Alto, CA 94301.

1 0

Urgent help needed to port some drivers on Fiasco L4 µ-Kernel
by tapas kundu 03 Apr '09

03 Apr '09

Hi ALL, We are students of IIT Delhi. We are working on a project based on Fiasco L4 microkernel. We need to buid servers on L4 for ext2 filesystem support and usb web cam support. Could you please clear following doubts : 1) Does "fiasco l4 microkernel/ l4 env" provide support for ext2 filesystem or usb webcam ? 2) Does "fiasco l4 microkernel/ l4 env" provides Device Driver API library so that we can build driver for it ? 3) Do we need to build both usb driver and webcam driver in "fiasco l4 microkernel/ l4 env" to provide support for usb webcam ? 4) Does "fiasco l4 microkernel/ l4 env" provides l4 io driver for SATA or IDE harddisk ? Can we use that to build our ext2 filesystem support for it? Thansks & Regards Tapas Kumar Kundu

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