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Michal Suchanek 8463809f8a libkmod, depmod: Load modprobe.d, depmod.d from ${prefix}/lib.
There is an ongoing effort to limit use of files outside of /usr (or
${prefix} on general). Currently all modprobe.d paths are hardcoded to
outside of $prefix. Teach kmod to load modprobe.d from ${prefix}/lib.

On some distributions /usr/lib and /lib are the same directory because
of a compatibility symlink, and it is possible to craft configuration
files with sideeffects that would behave differently when loaded twice.
However, the override semantic ensures that one 'overrides' the other,
and only one configuration file of the same name is loaded from any of
the search directories.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Link: https://lore.kernel.org/r/a290343ce32e2a3c25b134e4f27c13b26e06c9e0.1689681454.git.msuchanek@suse.de
Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com>
2023-10-17 12:27:59 -05:00
libkmod libkmod, depmod: Load modprobe.d, depmod.d from ${prefix}/lib. 2023-10-17 12:27:59 -05:00
m4 build: Stop using dolt 2019-02-20 10:38:56 -08:00
man libkmod, depmod: Load modprobe.d, depmod.d from ${prefix}/lib. 2023-10-17 12:27:59 -05:00
shared libkmod: add fallback MODULE_INIT_COMPRESSED_FILE define 2023-09-27 22:37:45 -05:00
shell-completion/bash Remove references to systemd from the bash completion file 2014-05-05 01:52:04 -03:00
testsuite testsuite: Handle different sysconfdir 2023-02-10 14:29:28 -08:00
tools libkmod, depmod: Load modprobe.d, depmod.d from ${prefix}/lib. 2023-10-17 12:27:59 -05:00
.gitignore gitignore: ignore gtk-doc.make 2022-02-20 20:58:11 -08:00
.travis.yml ci: update travis distro 2020-12-03 19:34:04 -08:00
autogen.sh autogen.sh: remove --with-rootprefix, it is gone since kmod-11 2022-11-30 22:01:01 -08:00
CODING-STYLE CODING-STYLE: add include order 2015-01-14 12:35:04 -02:00
configure.ac libkmod, depmod: Load modprobe.d, depmod.d from ${prefix}/lib. 2023-10-17 12:27:59 -05:00
COPYING Clarify what licences apply where 2014-10-09 01:26:34 -03:00
Makefile.am libkmod, depmod: Load modprobe.d, depmod.d from ${prefix}/lib. 2023-10-17 12:27:59 -05:00
NEWS kmod 31 2023-09-29 09:18:37 -05:00
README.md README: Update optional dependencies 2022-06-29 00:10:04 -07:00
TODO libkmod-module: check for NULL before accessing pointers 2018-04-05 14:54:43 -07:00

kmod - Linux kernel module handling

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Information

Mailing list: linux-modules@vger.kernel.org (no subscription needed) https://lore.kernel.org/linux-modules/

Signed packages: http://www.kernel.org/pub/linux/utils/kernel/kmod/

Git: git://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git http://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git

Gitweb: http://git.kernel.org/?p=utils/kernel/kmod/kmod.git https://github.com/kmod-project/kmod

Irc: #kmod on irc.freenode.org

License: LGPLv2.1+ for libkmod, testsuite and helper libraries GPLv2+ for tools/*

OVERVIEW

kmod is a set of tools to handle common tasks with Linux kernel modules like insert, remove, list, check properties, resolve dependencies and aliases.

These tools are designed on top of libkmod, a library that is shipped with kmod. See libkmod/README for more details on this library and how to use it. The aim is to be compatible with tools, configurations and indexes from module-init-tools project.

Compilation and installation

In order to compiler the source code you need following software packages: - GCC compiler - GNU C library

Optional dependencies: - ZLIB library - LZMA library - ZSTD library - OPENSSL library (signature handling in modinfo)

Typical configuration: ./configure CFLAGS="-g -O2" --prefix=/usr
--sysconfdir=/etc --libdir=/usr/lib

Configure automatically searches for all required components and packages.

To compile and install run: make && make install

Hacking

Run 'autogen.sh' script before configure. If you want to accept the recommended flags, you just need to run 'autogen.sh c'. Note that the recommended flags require cython be installed to compile successfully.

Make sure to read the CODING-STYLE file and the other READMEs: libkmod/README and testsuite/README.

Compatibility with module-init-tools

kmod replaces module-init-tools, which is end-of-life. Most of its tools are rewritten on top of libkmod so it can be used as a drop in replacements. Somethings however were changed. Reasons vary from "the feature was already long deprecated on module-init-tools" to "it would be too much trouble to support it".

There are several features that are being added in kmod, but we don't keep track of them here.

modprobe

  • 'modprobe -l' was marked as deprecated and does not exist anymore

  • 'modprobe -t' is gone, together with 'modprobe -l'

  • modprobe doesn't parse configuration files with names not ending in '.alias' or '.conf'. modprobe used to warn about these files.

  • modprobe doesn't parse 'config' and 'include' commands in configuration files.

  • modprobe from m-i-t does not honour softdeps for install commands. E.g.: config:

      install bli "echo bli"
    

    install bla "echo bla" softdep bla pre: bli

    With m-i-t, the output of 'modprobe --show-depends bla' will be: install "echo bla"

    While with kmod: install "echo bli" install "echo bla"

  • kmod doesn't dump the configuration as is in the config files. Instead it dumps the configuration as it was parsed. Therefore, comments and file names are not dumped, but on the good side we know what the exact configuration kmod is using. We did this because if we only want to know the entire content of configuration files, it's enough to use find(1) in modprobe.d directories

depmod

  • there's no 'depmod -m' option: legacy modules.*map files are gone

lsmod

  • module-init-tools used /proc/modules to parse module info. kmod uses /sys/module/*, but there's a fallback to /proc/modules if the latter isn't available