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2008-06-12kbuild: ignore powerpc specific symbols in modpostSam Ravnborg
Kumar Gala <galak@kernel.crashing.org> wrote: We have a case in powerpc in which we want to link some library routines with all module objects. The routines are intended for handling out-of-line function call register save/restore so having them as EXPORT_SYMBOL() is counter productive (we do also need to link the same "library" code into the kernel). Without this patch a powerpc build would error out and fail to build modules with the added register save/restore module. There were two obvious solutions: 1) To link the .o file before the modpost stage 2) To ignore the symbols in modpost Option 1) was ruled out because we do not have any separate linking stage for single file modules. This patch implements option 2 - and do so only for powerpc. The symbols we ignore are all undefined symbols named: _restgpr_*, _savegpr_*, _rest32gpr_*, _save32gpr_* Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org>
2008-05-11kbuild: disable modpost warnings for linkonce sectionsAndi Kleen
Disable modpost warnings for linkonce sections My build gives lots of warnings like WARNING: sound/core/snd.o (.gnu.linkonce.wi.mpspec_def.h.30779716): unexpected section name. The (.[number]+) following section name are ld generated and not expected. Did you forget to use "ax"/"aw" in a .S file? Note that for example <linux/init.h> contains section definitions for use in .S files. But for .linkonce. duplicated sections are actually ok and expected. So just disable the warning for this case. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-04-26kbuild: soften MODULE_LICENSE checkSam Ravnborg
Only modules that has other MODULE_* content shall have the MODULE_LICENSE() tag. This fixes allmodconfig build on my box. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-04-25kbuild: support loading extra symbols in modpostRichard Hacker
This patch adds a new command line option -E to modpost, expecting a symbol file as an argument which is read prior to symbol processing. -E can be supplied multiple times for as many files as is needed. When building kernel modules that depend on other modules not in the main kernel tree, modpost complains about undefined symbols: # make -C /path/to/linux/kernel M=/path/to/my/module ... Building modules, stage 2. .... WARNING: "rt_copy_buf" [/home/rich/osc_etl_rtw/osc_kmod.ko] undefined! ...etc This situation occurs when modpost processes the new module's symbols. When it finds symbols not exported by the mainline kernel, it issues this warning. The patch adds a new command line option -e to modpost which expects a symbol file as an argument. The symbols listed in this file are added to modpost's symbol tables during startup. -e can be supplied as often as required. This patch works together with the second patch. It introduces a new make variable, KBUILD_EXTRA_SYMBOLS, which is used when calling modpost. Signed-off-by: Richard Hacker <lerichi@gmx.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-04-25kbuild: error out on missing MODULE_LICENSESam Ravnborg
Adrian Bunk suggested a build time check for missing MODULE_LICENSE annotation in modules. The build time check is fatal as we really want this fixed for all modules. In-tree modules should all have been fixed up by now. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@kernel.org>
2008-03-23kbuild: soften modpost checks when doing cross buildsSam Ravnborg
The module alias support in the kernel have a consistency check where it is checked that the size of a structure in the kernel and on the build host are the same. For cross builds this check does not make sense so detect when we do cross builds and silently skip the check in these situations. This fixes a build bug for a wireless driver when cross building for arm. Acked-by: Michael Buesch <mb@bu3sch.de> Tested-by: Gordon Farquharson <gordonfarquharson@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: stable@kernel.org
2008-02-19kbuild: fix reversed symbol name order in modpostGeert Uytterhoeven
XXXINIT_TO_INIT and XXXEXIT_TO_EXIT warnings use the reversed symbol name order in the suggestion, e.g.: WARNING: vmlinux.o(.meminit.text+0x36c): Section mismatch in reference from the function free_area_init_core() to the function .init.text:setup_usemap() The function __meminit free_area_init_core() references a function __init setup_usemap(). If free_area_init_core is only used by setup_usemap then annotate free_area_init_core with a matching annotation. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-13Linux Kernel Markers: create modpost fileMathieu Desnoyers
This adds some new magic in the MODPOST phase for CONFIG_MARKERS. Analogous to the Module.symvers file, the build will now write a Module.markers file when CONFIG_MARKERS=y is set. This file lists the name, defining module, and format string of each marker, separated by \t characters. This simple text file can be used by offline build procedures for instrumentation code, analogous to how System.map and Module.symvers can be useful to have for kernels other than the one you are running right now. The strings are made easy to extract by having the __trace_mark macro define the name and format together in a single array called __mstrtab_* in the __markers_strings section. This is straightforward and reliable as long as the marker structs are always defined by this macro. It is an unreasonable amount of hairy work to extract the string pointers from the __markers section structs, which entails handling a relocation type for every machine under the sun. Mathieu : - Ran through checkpatch.pl Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: David Smith <dsmith@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-09kbuild/modpost: Use warn() for announcing section mismatchesGeert Uytterhoeven
modpost: Use warn() for announcing section mismatches, for easy grepping for warnings in build logs. Also change an existing call from fprintf() to warn() while we're at it. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-09kbuild/modpost: improve warnings if symbol is unknownSam Ravnborg
If we cannot determine the symbol then print (unknown) to hint the reader that we failed to find the symbol. This happens with REL relocation records in arm object files. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-03kbuild: do not warn about __*init/__*exit symbols being exportedSam Ravnborg
We have several legitimate uses where we export symbols annotated with one of: __devinit, __cpuinit, __meminit and their exit counterpart. So let's stop warning about those being exported in favour of adding all sorts of workaround to silence the warning. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-03kbuild: print only total number of section mismatces foundSam Ravnborg
We have too many section mismatches detected at the moment. So silence modpost and prevent the option from being set in a typical allyesconfig build. Tell the user how to see all the deteils in the summary message from modpost. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: warn about ld added unique sectionsSam Ravnborg
If there is a mixture of specifying sections for code in gcc and assembler then if the assembler code do not add the "ax" flags the linker will see this as two different sections and generate unique sections for each. ld does so by adding a dot and a number. Teach modpost to warn if a section shows up that match this pattern - but do this only for non-debug sections. It will result in warnings like this: WARNING: vmlinux.o (.sched.text.1): unexpected section name. The (.[number]+) following section name are ld generated and not expected. Did you forget to use "ax"/"aw" in a .S file? Note that for example <linux/init.h> contains section definitions for use in .S files. All warnings seen with a defconfig build for: x86 (32+64bit) and sparc64 has been fixed (via respective maintainers). arm, powerpc (64 bit), s390 (32 bit), ia64, alpha, sh4 checked - no warnings seen with a defconfig build. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: add verbose option to Section mismatch reporting in modpostSam Ravnborg
If the config option CONFIG_SECTION_MISMATCH is not set and we see a Section mismatch present the following to the user: modpost: Found 1 section mismatch(es). To see additional details select "Enable full Section mismatch analysis" in the Kernel Hacking menu (CONFIG_SECTION_MISMATCH). If the option CONFIG_SECTION_MISMATCH is selected then be verbose in the Section mismatch reporting from mdopost. Sample outputs: WARNING: o-x86_64/vmlinux.o(.text+0x7396): Section mismatch in reference from the function discover_ebda() to the variable .init.data:ebda_addr The function discover_ebda() references the variable __initdata ebda_addr. This is often because discover_ebda lacks a __initdata annotation or the annotation of ebda_addr is wrong. WARNING: o-x86_64/vmlinux.o(.data+0x74d58): Section mismatch in reference from the variable pci_serial_quirks to the function .devexit.text:pci_plx9050_exit() The variable pci_serial_quirks references the function __devexit pci_plx9050_exit() If the reference is valid then annotate the variable with __exit* (see linux/init.h) or name the variable: *driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, WARNING: o-x86_64/vmlinux.o(__ksymtab+0x630): Section mismatch in reference from the variable __ksymtab_arch_register_cpu to the function .cpuinit.text:arch_register_cpu() The symbol arch_register_cpu is exported and annotated __cpuinit Fix this by removing the __cpuinit annotation of arch_register_cpu or drop the export. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28remove __attribute_used__Adrian Bunk
Remove the deprecated __attribute_used__. [Introduce __section in a few places to silence checkpatch /sam] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: simplified warning report in modpostSam Ravnborg
Refactor code so the warning report function does nothing else than reporting warnings. As a side effect some other code paths were cleaned up by this. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: introduce a few helpers in modpostSam Ravnborg
Introducing helpers to retreive symbol and section names cleaned up the code a bit. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: use simpler section mismatch warnings in modpostSam Ravnborg
The typical layout is now: WARNING: vmlinux.o(.text+0x372ec): Section mismatch: reference to .devinit.text:pci_scan_one_pbm in 'psycho_scan_bus' This is first step towards more readable warnings. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28Use separate sections for __dev/__cpu/__mem code/dataSam Ravnborg
Introducing separate sections for __dev* (HOTPLUG), __cpu* (HOTPLUG_CPU) and __mem* (MEMORY_HOTPLUG) allows us to do a much more reliable Section mismatch check in modpost. We are no longer dependent on the actual configuration of for example HOTPLUG. This has the effect that all users see much more Section mismatch warnings than before because they were almost all hidden when HOTPLUG was enabled. The advantage of this is that when building a piece of code then it is much more likely that the Section mismatch errors are spotted and the warnings will be felt less random of nature. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Greg KH <greg@kroah.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Adrian Bunk <bunk@kernel.org>
2008-01-28kbuild: check section names consistently in modpostSam Ravnborg
Now that match() is introduced use it consistently so we can share the section name definitions. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: introduce blacklisting in modpostSam Ravnborg
Change the logic in modpost so we identify all the bad combinations of sections that refer to other sections. Compared to the previous approach we are much less dependent on knowledge of what additional sections the tool chain uses and thus we can keep the false positives low. The implmentation is changed to use a table based lookup and we now check all combinations in first pass so we no longer need separate passes for init and exit sections. Tested that the same warnings are generated for an allyesconfig build without CONFIG_HOTPLUG. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Adrian Bunk <bunk@kernel.org>
2008-01-28kbuild: code refactoring in modpostSam Ravnborg
Split a too long function up in smaller bits to make prgram logic easier to follow. A few related changes done due to parameter changes. No functional changes. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: try harder to find symbol names in modpostSam Ravnborg
The relocation record sometimes contained an address which was not an exactly match for a symbol. Implment some simple logic such that if there is a symbol within 20 bytes of the address contained in the relocation record then print the name of this symbol. With this change modpost could find symbol names for the remaining .init.text symbols in my allyesconfig build for x86_64. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: fix so modpost can now check any .o fileSam Ravnborg
It is very convinient to say: scripts/mod/modpost mm/built-in.o to check if any section mismatch errors occured in mm/ (as an example). Fix it so this is possible again. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: clean up modpost.cSam Ravnborg
akpm complained about overly long lines in modpost.c and when started additional style issues were fixed: o Updated my copyright o Removed unneeded {} o Drop assignments in if () o Spaces around operators o Break long lines o locate * near variable not type o Fix a format specifier for sizeof() o Corrected placement of '{' and '}' o spaces to tabs (but use tabs only for indention) modpost.c is not checkpatch clean. Readability were favoured on top of checkpatch compliance. But checkpatch were used to find additional stuff to clean up. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: fix a buffer overflow in modpostAndi Kleen
When passing an file name > 1k the stack could be overflowed. Not really a security issue, but still better plugged. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: fix format string warnings in modpostAndi Kleen
Fix wrong format strings in modpost exposed by the previous patch. Including one missing argument -- some random data was printed instead. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: declare the modpost error functions as printf likeAndi Kleen
This way gcc can warn for wrong format strings Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-18kbuild: modpost problem when symbols move from one module to anotherTrent Piepho
When part of build an external module tree, modpost first reads in the kernel's and then the external tree's Module.symvers files. From these files it establishes a symbol => module mapping. When it later reads in each module built and processes the symbols it finds, it discovers the symbol=>module mapping from Module.symvers and leaves it as it is. The problem comes with a module has been re-named or a symbol has moved from one module to another, since the Module.symvers file was generated. modpost does not update the symbol=>module mapping when it finds the new location of the symbol when scanning the newly built modules. This results in the module containing incorrect dependency information and the new Module.symvers file written by modpost will also contain the incorrect mappings, perpetuating the problem to the next build, and so on. When building the out of kernel development tree for kernel subsystem, like v4l-dvb or ALSA, deleting the external Module.symvers file before building (which the kernel build system doesn't do and shouldn't be necessary anyway), won't fix the problem. modpost still reads the kernel's Module.symvers, and since we a building a kernel subsystem, it will define the same symbols as the external modules. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-12kbuild: fix segfault in modpostPetr Stetiar
Fix modpost segfault. Before: ------- ynezz@ntbk:~/linux-2.6.git$ scripts/mod/modpost vmlinux ath_pci.o Segmentation fault After: ------ ynezz@ntbk:~/linux-2.6.git$ scripts/mod/modpost vmlinux ath_pci.o FATAL: section header offset=815726848 in file 'ath_pci.o' is bigger then filesize=153968 Sam: This seems to warn for a binutils issue. Anyway modpost should not segfault. Signed-off-by: Petr Stetiar <ynezz@true.cz> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-10[NETNS]: Move some code into __init section when CONFIG_NET_NS=nPavel Emelyanov
With the net namespaces many code leaved the __init section, thus making the kernel occupy more memory than it did before. Since we have a config option that prohibits the namespace creation, the functions that initialize/finalize some netns stuff are simply not needed and can be freed after the boot. Currently, this is almost not noticeable, since few calls are no longer in __init, but when the namespaces will be merged it will be possible to free more code. I propose to use the __net_init, __net_exit and __net_initdata "attributes" for functions/variables that are not used if the CONFIG_NET_NS is not set to save more space in memory. The exiting functions cannot just reside in the __exit section, as noticed by David, since the init section will have references on it and the compilation will fail due to modpost checks. These references can exist, since the init namespace never dies and the exit callbacks are never called. So I introduce the __exit_refok attribute just like it is already done with the __init_refok. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31kbuild: whitelist references from __dbe_table to .initRalf Baechle
This is needed on MIPS where the same mechanism as get_user() is used to intercept bus error exceptions for some hardware probes. Without this patch modpost will throw spurious warnings: LD vmlinux SYSMAP System.map SYSMAP .tmp_System.map MODPOST vmlinux WARNING: arch/mips/sgi-ip22/built-in.o(__dbe_table+0x0): Section mismatch: reference to .init.text: Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-25kbuild: fix modpost warnings for xtensaSam Ravnborg
The Xtensa architecture places literal pools in sections separate from the instructions. The corresponsing text sections, therefore, reference the .literal section, and we have to suppress those warnings. The naming convention defines the name for a literal section as .SECTION.literal, unless .SECTION is .text. In that case the name is only .literal. Using strncmp() instead of strcmp() to compare the from-section with .SECTION.init.refok in pattern 0 should not cause any regressions for other architectures. We also need to suppress warnings for two informational sections (.xt.lit and .xt.prop) used by the Xtensa architecture. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-25kbuild: be more foregiving on init section namingSam Ravnborg
In the whitelist function of modpost now use the same check to identify init_section as in other places of modpost. This has the effect that we now recognize sections named .init.text.19 as init sections and we no longer warn when we see these. At the same time make surrounding code readable by dropping use of temporary flags. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-25kbuild: rearrange a few function in modpostSam Ravnborg
This is a preparational patch that just move two functions and add one (for now unused) function. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-25kbuild: do not do section mismatch checks on vmlinux in 2nd passSam Ravnborg
We already check and warn about section mismatches from vmlinux (build as vmlinux.o) during first pass so skip the checks during the 2nd pass where we process modules. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-20m68k: teach modpost about .m68_fixupAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Whitelist references from __dbe_table to .initRalf Baechle
This is needed on MIPS where the same mechanism as get_user() is used to intercept bus error exceptions for some hardware probes. Without this patch modpost will throw spurious warnings: LD vmlinux SYSMAP System.map SYSMAP .tmp_System.map MODPOST vmlinux WARNING: arch/mips/sgi-ip22/built-in.o(__dbe_table+0x0): Section mismatch: reference to .init.text: Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-17modpost white list pattern adjustmentJan Beulich
gcc puts data into .data.rel or .data.rel.* on some architectures (e.g. ia64) or under certain conditions, so whatever is legal relative to .data should also be legal for those other sections. Fixes a few modpost warnings on ia64. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-17kbuild: do section mismatch check on full vmlinuxSam Ravnborg
Previously we did do the check on the .o files used to link vmlinux but that failed to find questionable references across the .o files. Create a dedicated vmlinux.o file used only for section mismatch checks that uses the defualt linker script so section does not get renamed. The vmlinux.o may later be used as part of the the final link of vmlinux but for now it is used fo section mismatch only. For a defconfig build this is instant but for an allyesconfig this add two minutes to a full build (that anyways takes ~2 hours). Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: whitelist references from variables named _timer to .init.textSam Ravnborg
arm uses a lot of ops structures named *_timer that has legitimite references to .init.text. So let's add this variable to the list of variables that may reference .init.text without causing any warning. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: remove hardcoded _logo names from modpostSam Ravnborg
Replaced this with a __init_refok marker in front of fb_find_logo(). I think that the __initdata marker for the logo's are wrong but I have not justified this so I did not remove it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: remove hardcoded apic_es7000 from modpostSam Ravnborg
Replace the hardcoded variable name apic_es7000 in modpost with a __initdata_refok marker. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: warn about references from .init.text to .exit.textSam Ravnborg
The .exit.text section may be discarded either at build or at runtime. So let modpost warn if this situation is detected. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: consolidate section checksSam Ravnborg
Move more checks from whitelist to the section check functions. Remove the redundent pci_fixup check. Renumber the patterns. No functional changes. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: refactor code in modpost to improve maintainabilitySam Ravnborg
There were a great deal of overlap between the two functions that check which sections may reference .init.text and .exit.text. Factor out common check to a separate function and sort entries in the original functions. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: ignore section mismatch warnings originating from .note sectionSam Ravnborg
.note* sections are ELF notes, which are typically used by external tools to examine the kernel image. Since this is removed from any runtime consideration, it's OK to reference any section from a .note* section. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: .paravirtprobe section is obsolete, so modpost doesn't need to handle itJeremy Fitzhardinge
The .paravirtprobe section is obsolete, so modpost doesn't need to handle it. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: suppress modpost warnings for references from the .toc section as ↵Stephen Rothwell
used by powerpc We should do better here by effetively "dereferencing" references to the .toc (or the .got2) section, but that is much harder. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: make better section mismatch reports on armSam Ravnborg
With this change we can find more symbols hereby improving the readability of the warnings. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>