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2020-03-17modpost: move the namespace field in Module.symvers lastJessica Yu1-1/+1
In order to preserve backwards compatability with kmod tools, we have to move the namespace field in Module.symvers last, as the depmod -e -E option looks at the first three fields in Module.symvers to check symbol versions (and it's expected they stay in the original order of crc, symbol, module). In addition, update an ancient comment above read_dump() in modpost that suggested that the export type field in Module.symvers was optional. I suspect that there were historical reasons behind that comment that are no longer accurate. We have been unconditionally printing the export type since 2.6.18 (commit bd5cbcedf44), which is over a decade ago now. Fix up read_dump() to treat each field as non-optional. I suspect the original read_dump() code treated the export field as optional in order to support pre <= 2.6.18 Module.symvers (which did not have the export type field). Note that although symbol namespaces are optional, the field will not be omitted from Module.symvers if a symbol does not have a namespace. In this case, the field will simply be empty and the next delimiter or end of line will follow. Cc: stable@vger.kernel.org Fixes: cb9b55d21fe0 ("modpost: add support for symbol namespaces") Tested-by: Matthias Maennich <maennich@google.com> Reviewed-by: Matthias Maennich <maennich@google.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by: Jessica Yu <jeyu@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2019-09-10modpost: add support for symbol namespacesMatthias Maennich1-1/+1
Add support for symbols that are exported into namespaces. For that, extract any namespace suffix from the symbol name. In addition, emit a warning whenever a module refers to an exported symbol without explicitly importing the namespace that it is defined in. This patch consistently adds the namespace suffix to symbol names exported into Module.symvers. Example warning emitted by modpost in case of the above violation: WARNING: module ums-usbat uses symbol usb_stor_resume from namespace USB_STORAGE, but does not import it. Co-developed-by: Martijn Coenen <maco@android.com> Signed-off-by: Martijn Coenen <maco@android.com> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Matthias Maennich <maennich@google.com> Signed-off-by: Jessica Yu <jeyu@kernel.org>
2019-07-18kbuild: export_report: read modules.order instead of .tmp_versions/*.modMasahiro Yamada1-6/+5
Towards the goal of removing MODVERDIR aka .tmp_versions, read out modules.order to get the list of modules to be processed. This is simpler than parsing *.mod files in .tmp_versions. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209Thomas Gleixner1-1/+1
Based on 1 normalized pattern(s): released under gpl v2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 15 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.895196075@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-14scripts: Switch to more portable Perl shebangKamil Rytarowski1-1/+2
The default NetBSD package manager is pkgsrc and it installs Perl along other third party programs under custom and configurable prefix. The default prefix for binary prebuilt packages is /usr/pkg, and the Perl executable lands in /usr/pkg/bin/perl. This change switches "/usr/bin/perl" to "/usr/bin/env perl" as it's the most portable solution that should work for almost everybody. Perl's executable is detected automatically. This change switches -w option passed to the executable with more modern "use warnings;" approach. There is no functional change to the default behavior. While there, drop "require 5" from scripts/namespace.pl (Perl from 1994?). Signed-off-by: Kamil Rytarowski <n54@gmx.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2014-08-20kbuild: Make scripts executableMichal Marek1-0/+0
The Makefiles call the respective interpreter explicitly, but this makes it easier to use the scripts manually. Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-05-24export_report: use warn() to issue WARNING, so they go to stderrJim Cromie1-1/+7
Also count CONFIG_MODVERSIONS warnings, and print a NOTE at start of SECTION 2 if any were issued. Section 2 will be empty if the build is lacking this CONFIG_ item, and user may have missed the warnings, as they're off screen. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-05-24export_report: sort SECTION 2 outputJim Cromie1-3/+5
Sort SECTION 2 modules by name. Within those module listings, sort the symbol providers by name, and remove the count, as it is misleading; its the kernel-wide count of uses of that symbol, not the count pertaining to the module being outlined. (this can be seen by grepping the output for a single symbol). The count is still used to sort the symbols. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-05-24export_report: do collectcfiles work in perl itselfJim Cromie1-2/+8
Avoid spawning a shell pipeline doing cat, grep, sed, and do it all inside perl. The <*.c> globbing construct works at least as far back as 5.8.9 Note that this is not just an optimization; the sed command in the pipeline was unterminated, due to lack of escape on the end-of-line (\$) in the regex, resulting in this: $ perl ../linux-2.6/scripts/export_report.pl > /dev/null sed: -e expression #1, char 5: unterminated `s' command sh: .mod.c/: not found Comments on an earlier patch sought an all-perl implementation. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> cc: Michal Marek <mmarek@suse.cz>, cc: linux-kbuild@vger.kernel.org cc: Arnaud Lacombe lacombar@gmail.com cc: Stephen Hemminger shemminger@vyatta.com Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-03-07export_report: fix perl warningsStephen Hemminger1-17/+20
Use local file handles, use three argument open. Don't modify arguments in perl grep (use sed instead) Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: WANG Cong <amwang@redhat.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2007-10-12kbuild: fix perl usage in export_report.plRam Pai1-4/+4
Fixes some subtle perl coding bug observed by Jan Engelhardt <jengelh@computergmbh.de> This patch applies on top of Adrian's fix. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Acked-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-12kbuild: fix export_report.plAdrian Bunk1-1/+1
This patch fixes an annoying bug of export_report.pl missing the usages of some exports. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-06-24kbuild: export-symbol usage report generatorRam Pai1-0/+169
The following patch provides the ability to generate a report of (1) All the exported symbols and their in-kernel-module usage count (2) For each module, lists the modules and their exported symbols, on which it depends. the report can be generated by executing: perl scripts/export_report The tool warns if the modules are not build using MODVERSIONING. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>