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Lucas De Marchi
kmod 32
06 мар 2024, 06:27
06 мар 2024, 06:27
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kmod 32 ======= - Improvements - Use any hash algo known by kernel/openssl instead of keep needing to update the mapping - Teach kmod to load modprobe.d/depmod.d configuration from ${prefix}/lib and allow it to be overriden during build with --with-distconfdir=DIR - Make kernel modules directory configurable. This allows distro to make kmod use only files from /usr regardless of having a compat symlink in place. - Install kmod.pc containing the features selected at build time. - Install all tools and symlinks by default. Previously kmod relied on distro packaging to set up the symlinks in place like modprobe, depmod, lsmod, etc. Now those symlinks are created by kmod itself and they are always placed in $bindir. - Bug Fixes - Fix warnings due to -Walloc-size - Others - Drop python bindings. Those were not update in ages and not compatible with latest python releases. - Cleanup test infra, dropping what was not used anymore - Drop experimental tools `kmod insert` / `kmod remove`. Building those was protected by a configure option never set by distros. They also didn't gain enough traction to replace the older interfaces via modprobe/insmod/rmmod. kmod 31 ======= - Improvements - Allow passing a path to modprobe so the module is loaded from anywhere from the filesystem, but still handling the module dependencies recorded in the indexes. This is mostly intended for kernel developers to speedup testing their kernel modules without having to load the dependencies manually or override the module in /usr/lib/modules/. Now it's possible to do: # modprobe ./drivers/gpu/drm/i915/i915.ko As long as the dependencies didn't change, this should do the right thing - Use in-kernel decompression if available. This will check the runtime support in the kernel for decompressing modules and use it through finit_module(). Previously kmod would fallback to the older init_module() when using compressed modules since there wasn't a way to instruct the kernel to uncompress it on load or check if the kernel supported it or not. This requires a recent kernel (>= 6.4) to have that support and in-kernel decompression properly working in the kernel. - Make modprobe fallback to syslog when stderr is not available, as was documented in the man page, but not implemented - Better explaing `modprobe -r` and how it differentiates from rmmod - depmod learned a `-o <dir>` option to allow using a separate output directory. With this, it's possible to split the output files from the ones used as input from the kernel build system - Add compat with glibc >= 2.32.9000 that dropped __xstat - Improve testsuite to stop skipping tests when sysconfdir is something other than /etc - Build system improvements and updates - Change a few return codes from -ENOENT to -ENODATA to avoid confusing output in depmod when the module itself lacks a particular ELF section due to e.g. CONFIG_MODVERSIONS=n in the kernel. - Bug Fixes - Fix testsuite using uninitialized memory when testing module removal with --wait - Fix testsuite not correctly overriding the stat syscall on 32-bit platforms. For most architectures this was harmless, but for MIPS it was causing some tests to fail. - Fix handling unknown signature algorithm - Fix linking with a static liblzma, libzstd or zlib - Fix memory leak when removing module holders - Fix out-of-bounds access when using very long paths as argument to rmmod - Fix warnings reported by UBSan kmod 30 ======= - Improvements - Stop adding duplicate information on modules.builtin.alias.bin, just use the modules.builtin.bin index - Speedup depmod, particularly under qemu with emulated arch, by avoiding a lot of open/read/close of modules.alias.bin. On an emulated ARM rootfs, depmod with only 2 modules was taking ~32s vs ~0.07s now. - Add kmod_module_new_from_name_lookup() which allows doing a lookup by module name, without considering the aliases. Other than that search order is similar to kmod_module_new_from_lookup(). - modinfo learned the --modname option to explicitely show information about the module, even if there is an alias with the same name. This allows showing information about e.g. kernel/lib/crc32.ko, even if kernel also exports a crc32 alias in modules.alias: alias crc32 crc32_pclmul alias crc32 crc32_generic Same behavior will be used to other modules and to aliases provided by user/distro. - depmod.conf learned a new "excludedir" directive so distro/user can configure more directories to be excluded from its search, besides the hardcoded values "build" and "source". - Better group modprobe options on help output under "Management, Query and General". - modprobe learned a --wait <MSEC> option to be used together with -r when removing a module. This allows modprobe to keep trying the removal if it fails because the module is still in use. An exponential backoff time is used for further retries. The wait behavior provided by the kernel when not passing O_NONBLOCK to delete_module() was removed in v3.13 due to not be used and the consequences of having to support it in the kernel. However there may be some users, particularly on testsuites for individual susbsystems, that would want that. So provide a userspace implementation inside modprobe for such users. "rmmod" doesn't have a --wait as it remains a bare minimal over the API provided by the kernel. In future the --wait behavior can be added to libkmod for testsuites not exec'ing modprobe for module removal. - kmod_module_remove_module() learned a new flag to silence output when caller wants to handle them - this is particularly important for the --wait flag to modprobe, as it's not desired to keep seeing error messages while waiting for the module to be unused. - Add SM3 hash algo support to modinfo output, as already available in the kernel. - Bug Fixes - Fix modinfo output when showing information for a .ko module when running on a kernel that has that module as builtin. - Fix kmod_module_new_from_lookup() returning > 0 rather than 0 when it matches an alias. - Fix modinfo segfault when module doesn't exist. - Add missing function in the html documentation: kmod_get_dirname(). - Fix modprobe incorrectly handling number of arguments when prepending values from MODPROBE_OPTIONS environment variable. - Fix modprobe -r --remove-dependencies and since "dependencies" was a misnomer, add the preferred argument option: "--remove-holders". This is the same name used by the kernel. It allows users to also remove other modules holding the one that is being removed. - Fix off-by-one in max module name length in depmod. - Infra/internal - Start some changes in the out-of-tree test modules in kmod so they are useful for being really inserted in the kernel rather than relying on kmod's mock interface. This helps manual testing and may be used to exercise to test changes in the kernel. kmod 29 ======= - Improvements - Add support to use /usr/local as a place for configuration files. This makes it easier to install locally without overriding distro files. - Bug fixes - Fix `modinfo -F` when module is builtin: when we asked by a specific field from modinfo, it was not working correctly if the module was builtin - Documentation fixes on precedence order of /etc and /run: the correct order is /etc/modprobe.d, /run/modprobe.d, /lib/modprobe.d - Fix the priority order that we use for searching configuration files. The correct one is /etc, /run, /usr/local/lib, /lib, for both modprobe.d and depmo.d - Fix kernel command line parsing when there are quotes present. Grub mangles the command line and changes it from 'module.option="val with spaces"' to '"module.option=val with spaces"'. Although this is weird behavior and grub could have been fixed, the kernel understands it correctly for builtin modules. So change libkmod to also parse it correctly. This also brings another hidden behavior from the kernel: newline in the kernel command line is also allowed and can be used to separate options. - Fix a memory leak, overflow and double free on error path - Fix documentation for return value from kmod_module_get_info(): we return the number of entries we added to the list - Fix output of modules.builtin.alias.bin index: we were writing an empty file due to the misuse of kmod_module_get_info() - Infra/internal - Retire integration with semaphoreci - Declare the github mirror also as an official upstream source: now besides accepting patches via mailing list, PRs on github are also acceptable - Misc improvements to testsuite, so we can use it reliably regardless of the configuration used: now tests will skip if we don't have the build dependencies) kmod 28 ======= - Improvements - Add Zstandard to the supported compression formats using libzstd (pass --with-zstd to configure) - Bug fixes - Ignore ill-formed kernel command line, e.g. with "ivrs_acpihid[00:14.5]=AMD0020:0" option in it - Fix some memory leaks - Fix 0-length builtin.alias.bin: it needs at least the index header kmod 27 ======= - Improvements - Link to libcrypto rather than requiring openssl - Print a better error message when kernel doesn't support module unload - Use PKCS#7 instead of CMS for parsing module signature to be compatible with LibreSSL and OpenSSL < 1.1.0 - Teach modinfo to parse modules.builtin.modinfo. When using Linux kernel >= v5.2-rc1 it's possible to get module information from this new file. Now modinfo is able to show it instead of an error message that the module is built-in: Before: $ modinfo ext4 modinfo: ERROR: Module ext4 not found. After: $ modinfo ext4 name: ext4 filename: (builtin) softdep: pre: crc32c license: GPL description: Fourth Extended Filesystem author: Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others alias: fs-ext4 alias: ext3 alias: fs-ext3 alias: ext2 alias: fs-ext2 - Bug fixes - Do not link python bindings with libpython to be compatible with python3.8 - Fix module removal with `modprobe -r` when a dependency is built-in. Now it properly ignores them and proceed with removal of other dependencies - Fix propagation of return code from install/remove commands to the the probe function. The return values of kmod_module_probe_insert_module() have very specific meanings, do not confuse the caller by return codes from system() - Fix softdep config parsing leading to buffer overflow kmod 26 ======= - Improvements - Add more error-checking in library functions and remove warnings on newer toolchains - Depmod now handles parallel invoctions better by protecting the temporary files being used - Improvements to testsuite and added tests to check the our behavior regardless of the features enabled in the kernel, or libraries we link to - Teach the --show-exports option to modprobe. This works similarly to --show-modversions, but it reports the exported symbols from that module. Under the hood this reads the .symtab and .strtab section rather than __versions so it shows useful data even if kernel is configured without modversions (CONFIG_MODVERSIONS) - Teach pkcs7 parsing to modinfo by using openssl. This allows modinfo to correctly parse the signature appended to a module by the kernel build system when configured with CONFIG_MODULE_SIG_ALL, or when externally signed by the distro. Traditionally modules were signed and a struct was appended together with the signature to the end of the module. This has changed on the kernel for pkcs#7 and now the structure isn't filled out with useful information. So we have to parse the signature block in order to return useful data to the user. If kmod is linked with openssl we parse the signature and return the fields as we do for other signatures. An example of the relevant part on the output of modinfo is below: Before: sig_id: PKCS#7 signer: sig_key: sig_hashalgo: md4 After: sig_id: PKCS#7 signer: Fedora kernel signing key sig_key: 51:C4:0C:6D:7E:A5:6C:D8:8F:B4:3A:DF:91:78:4F:18:BC:D5:E4:C5 sig_hashalgo: sha256 If kmod is not linked to openssl we just start printing "unknonwn" in the sig_hashalgo field rather than the bogus value. kmod 25 ======= - Improvements - Add module signature to modinfo output - Add support for external directories in depmod: now there's a new "external" keyword parsed by depmod when calculating the dependencies. It allows to add modules to other directories which are not relative to where the modules are commonly installed. This results in modules.dep and friends now understanding absolute paths rather than relative paths only. For more information see depmod.d(1). - Add support for CONFIG_MODULE_REL_CRCS - Add missing documentation references in man pages - Handle the case in which module has a .TOC symbol already while calculating dependencies - Improve testsuite and allow to use mkosi to run testsuite in different distros kmod 24 ======= - Improvements: - Add more information on dependency loop - Sanitize use of strcpy and allow to grow from small strings on stack (common case) to bigger strings on heap when needed - Bug fixes - Fix wrong dependency loops being reported by depmod - Fix crashes when reporting dependency loops - Fix parsing kernel command line containing quotes - Fix leaks on error paths kmod 23 ======= - Improvements: - Don't add comment to modules.devname if it would otherwise be empty to play nice with tools detecting empty files - Allow building with BSD sed, that doesn't have -E flag - Ignore .TOC. symbols in depmod parsing as it's for PPC64 the equivalent of _GLOBAL_OFFSET_TABLE_ - Teach modinfo about PKCS#7 module signatures: it doesn't add any other info besides telling the user the module is signed since kernel doesn't add other info on the module section - Bug fixes - Fix -s and -p compat options to insmod triggering force flag - Fix long lines from /proc/modules not being handled correctly by kmod_module_new_from_loaded() and kmod_module_get_size() and several other library functions that use them - Fix crash on modinfo while checking for available signature of unknown type - Fix documentation generation with gtk-doc kmod 22 ======= - Tools: - Change defaul log level for tools to WARNING rather than ERROR and update some log levels for current messages - depmod doesn't fallback to uname if a bad version is passed in the command line anymore. We just exit with an error. - insmod was taught the -f flag, just like in modprobe. It was previously silently ignoring it. - libkmod - New kmod_get_dirname() API to get the module directory set in the context - Bug fixes: - Fix return code in error path of kmod_module_insert_module(). We were previously returning ENOSYS rather than ENOENT. kmod 21 ======= - New features: - kmod tool started to learn the "insert" and "remove" commands that are the simplified versions of the older modprobe tool. These commands are still work in progress so they are hidden behind a --enable-experimental flag during build. It should not be enabled unless you know what you're doing. - kmod tool now prints the relevant configuration options it was built with when the "--version" argument is passed. This helps to mitigate problems for example when the user is trying to load a compressed module but kmod was built without support for the compression method. - Improvements to testsuite: - Cache built modules so it is easier to run "make check" on build servers by distro maintainers. If kmod is configured with --disable-test-modules the modules from cache will be used by "make check". No changes to the tests are needed and all of them can run fine. kmod 20 ======= - Bug fixes: - Handle bogus values from ELF, making sure they don't overflow while parsing the file - Fix leak in depmod when -b flag is passed multiple times - Multiple minor fixes from static analysis by coverity and clang-analyze - Fix race between loading modules and checking if it's loaded in the kernel - New features: - There's a change in behavior regarding builtin modules: we now only consider as builtin those that are present in modules.builtin index. Previously we were also checking the presence of /sys/module/<module-name>, but this is racy and only modules that contain parameters are the ones creating a directory in sysfs. Now some commands will start to fail, e.g. "modprobe vt". Since vt can't be compiled as a module it's not present in modules.builtin index. Previously we would report at as builtin, but now we fail because we couldn't find the module. - Improvements: - Integration of gcov into the build. Currently libkmod is at ~70% covered and tools at ~50% by tests in the testsuite. Utility functions and structures in shared have more than 90% of coverage. - Upload build to coverity - Improvements to testsuite: - Fix parsing return codes of init_module() calls - Add tests for utility functions in shared/ - Add tests for kmod_module_remove_module() - Add playground, in which our own modules are compiled - Port all tests to use modules from module-playground instead of copying prebuilt modules to the repository - Properly handle binaries that exit with no output - Besides comparing the output of commands, allow to copy to stdout/stderr kmod 19 ======= - Bug fixes: - Fix missing CLOEXEC in library - Fix error message while opening kmod's index - New features: - Add kmod(8) man page - Allow to build with libc's without be32toh() - Move code around separating common code and data structures into a shared directory. This allows to share more code between library and tools, making the binary size of tools smaller. - Clarify tools vs library licenses - static-nodes: when writing in tmpfiles format, indicate that creation of static nodes should only happen at boot. This is used and required by systemd-217+. - Improvements to testsuite: - Add tests for newly created shared/ code - Improve how tests are declared so there's less boilerplate code for each test. kmod 18 ======= - Bug fixes: - Fix leaks in error paths - Fix use-after-free in hash implementation causing a wrong index to be generated by depmod with out-of-tree modules - New features: - Calling depmod with modules creating a dependency loop will now make depmod return an error and not update the indexes. This is to protect the current index not being overridden by another index that may cause a boot failure, depending on the buggy module. It's a necessary change in behavior regarding previous kmod releases and module-init-tools. The error message was also improved to output the modules that caused the dependency cycle. - Improvements to testsuite: - Fix and improve expected-fail test - Add tests for hashmap implementation kmod 17 ======= - Bug fixes: - Fix matching a "." in kernel cmdline, making garbage in the command line be parsed as kmod options - Fix man pages to clarify we don't fallback to parsing modules.dep but instead we depend on modules.dep.bin (generated by depmod) to be present - Fix ELF parsing on 32 bit systems assigning the wrong class. - Fix partial matches of search directives in depmod. Previously having a line in depmod.conf such as "search foo foobar built-in" would cause unpretictable results because foo is a partial match of foobar as well. - Fix unaligned access in modinfo when getting the signature from a module - Make sure softdeps are treated as optional dependencies - New features: - Accept special files given to "-C" switch in modprobe. This way it's possible to skip system configuration with "modprobe -C /dev/null" - Do not require xsltproc on released tarballs - Don't use Werror anymore - Add experimental python bindings, merged from python-kmod repository (https://github.com/agrover/python-kmod) - Parse softdeps exported by the kernel as /lib/modules/`uname -r`/modules.softdep - Improvements to testsuite: - Check the list of loaded modules after a test kmod 16 ======= - Bug fixes: - Fix usage of readdir_r() - Add some missing checks for memory allocation errors - New features: - Remove option from libkmod to allow waiting on module removal if the module is being used. It's dangerous since it can block the caller indefinitely. - Improve compatibility with musl libc - Add fallback implementation for compilers without _Static_assert(), e.g. gcc < 4.6 - Minor optimizations to the hash table - Make depmod warn if a module has incorrect devname specification - Use cleanup attribute kmod 15 ======= - Bug fixes: - kmod static-nodes doesn't fail if modules.devname isn't available - Fix getting boolean parameter from kernel cmdline in case the value is omitted - Fix some mkdir_p() corner cases (used in testsuite and static-nodes) - New features: - kmod static-nodes creates parent directories if given a -o option - kmod binary statically links to libkmod - if distro is only interested in the kmod tool (for example in an initrd) it can refrain from installing the library - Add shell completion for kmod tool kmod 14 ======= - Bug fixes: - Fix some format strings - Protect against NULL being passed around to index - Avoid calling syscall() with -1 when finit_module() is not available, since this doesn't always work - Fix not being able to remove alias due to checking the module's refcount - Minor fixes and refactors - New features: - Improve libkmod documentation, particularly on how flags are dealt with. - Remove ability to build a static libkmod - Add static-nodes command to kmod that parses modules.devname generating output in useful formats kmod 13 ======= - Bug fixes: - Add the long option --symbol-prefix option to depmod (it was absent) and fix its behavior - Don't abort if there's a bogus line in configuration file like "alias psmouse off". Some distros are carrying this since the days of modutils - New features: - Add support for finit_module(2). If the module is load straight from the disk and without compression we use finit_module() syscall when available, falling back to init_module() otherwise - kmod_module_get_info() also returns the signature if the module is signed and modinfo uses it - Use secure_getenv if available - rmmod understands builtin modules, just like modprobe does - Improve compatibility with musl-libc - Test cases exit with success when receiving a signal if they are xfail tests kmod 12 ======= - Bug fixes: - Fix removing vermagic from module when told to force load a module - Fix removing __versions section when told to force load a module: we need to mangle the section header, not the section. - modinfo no longer fails while loading a module from file when path contains ".ko" substring kmod 11 ======= - Improvements to testsuite: - Fix testsuite defining symbols twice on 32 bit systems - Allow to check generated files against correct ones - New features: - libkmod now keeps a file opened after the first call to kmod_module_get_{info,versions,symbols,dependency_symbols}. This reduces significantly the amount of time depmod tool takes to execute. Particularly if compressed modules are used. - Remove --with-rootprefix from build system. It was not a great idea after all and should not be use since it causes more harm then benefits. - Hide --wait option on rmmod. This feature is being targeted for removal from kernel. rmmod still accepts this option, but it's hidden now: man page and usage() say nothing about it and if it's used, user will get a 10s sleep. This way we can check and help if anyone is using this feature. - Refactor message logging on all tools, giving proper prefix, routing everything to syslog when asked for, etc. - Bug fixes: - Fix parsing of modules.order when using compressed modules - Usage messages go to stdout instead of stderr - Fix memory leak in hash implementation kmod 10 ======= - New features: - Read coresize from /sys if supported - Add flag to kmod_module_probe_insert() to apply blacklisting during probe only if mod is an alias. Now modprobe uses this flag by default. This is needed to fix a change in behavior regarding module-init-tools and ultimately makes us loading a blacklisted module. - Better formatting in man pages - Add option to disable building man pages at build time - Fixes in the testsuite and refactoring of LDPRELOAD'ed libraries - Re-licensing testsuite as LGPL kmod 9 ====== - Improvements to the testsuite: - Check for correct handling of softdep loops - Check for correct handling of install command loops - Bug fixes: - Fix build with compilers that don't support --gc-sections - Handle errors when dealing with gzipped modules - depmod now handles errors while writing indices, so it doesn't end up with a corrupted index without telling the user kmod 8 ====== - No new features, small bug fixes only. - Fix a bug in "modprobe -c" output: be compatible with module-init-tools - Give a useful error message when init_module fails due to bad parameter or unknown symbols - Fix doc generation kmod 7 ====== - Re-order dirs for configuration files to match the change in systemd and udev: now the priority is: 1. /etc/modprobe.d 2. /run/modprobe.d 3. /lib/modprobe.d - Fix setting CFLAGS/LDFLAGS in build system. This prevented us from not allowing the user to set his preferences. - Bug fixes: - Return same error codes of module-init-tools when removing modules with modprobe - Fix builtin output in "--show-depends" when target kernel is not the same of the running kernel - 'modprobe -r' always look at all command line arguments - Fix '-q' usage in modprobe kmod 6 ====== - New API in libkmod: - kmod_module_apply_filter(): a generic function to apply filters in a list of modules. This deprecates the use of kmod_module_get_filtered_blacklist() - More tests in testsuite - Add compatibility with uClibc again - Lookup modules.builtin.bin to decide if a module is built in kernel - Downgrade some log messages so we don't annoy people with useless messages - Bug fixes: - Flag --ignore-loaded was not being properly handled - Infinite loop with softdeps - Infinite loop with dumb user configuration with install commands - Fix leak in index when there's a partial match - Move repository and tarballs to kernel.org kmod 5 ====== - Break libkmod's API to insert a module like modprobe does. It now accepts extra an extra argument to print its action and acceptable flags were sanitized. - Share more code between modprobe and libkmod: using the new version of kmod_module_probe_insert_module() it's possible to share a great amount of code between modprobe and libkmod - modprobe no longer works with paths: it only accepts module names and/or aliases now. - testsuite was added to repository, allowing automated tests to be run and easing the way bugs are reproduced. - modprobe: when dumping configuration ('-c' option) separate config and indexes by adding a commented line between them. - Fix bugs wrt normalizing aliases and module names - Fix bug wrt inserting an alias that resolves to multiple modules: we should not stop on the first error, but rather continue to try loading other modules. - Fix unaligned memory access in hash function, causing depmod to output wrong information in ARMv5 - Fix man page build and install: now they are only installed if tools are enabled kmod 4 ====== - New APIs in libkmod to: - Get configuration lists: blacklists, install commands, remove commands, aliases, options and softdeps - Dump indexes - Several bugs fixed in libkmod, modprobe, depmod and modinfo - API documentation: if configure with run with --enable-gtk-doc, the API doc will be generated by make. Gtk-doc is required for that. - Man pages are built, which replace man pages from module-init-tools - 'include' and 'config' options in *.conf files were deprecated - configure is not run by autogen.sh. Instead, a common set of options is printed. If you are hacking on kmod, consider using bootstrap-configure script. - 'modprobe -c' works as expected now. As opposed to module-init-tools, it dumps the parsed configuration, not only the file contents. kmod 3 ====== - New APIs in libkmod to: - Get symbols from module, parsing the ELF section - Get dependency symbols - Check if resources are still valid or if libkmod must be reloaded - Insert module like modprobe, checking (soft-)dependencies, commands, blacklist. It can run commands by itself and to call a callback function. - Support to load modules compressed with xz - Tools are now bundled together in a single tool called kmod. It can be called using symlinks with the same names as tools from module-init-tools. E.g: /usr/bin/lsmod -> /usr/bin/kmod. With this we are aiming to complete a 1:1 replacement of module-init-tools. - The only missing tool, depmod, was added to kmod together with the necessary APIs in libkmod. - If a program using libkmod runs for a long time, as for example udev, it must check if it doesn't have to re-load libkmod. A new helper function was added in libkmod to check if context is still valid and udev is already using it. - An 'unaligned access' bug was fixed. So those architecture that does not handle unaligned access can use kmod, too. kmod 2 ====== Some bugs fixed: the worst of them was with an infinite loop when an alias matched more than one module. - New APIs in libkmod to: - Get soft dependencies - Get info from module files parsing ELF - Get modversions from files parsing ELF - Support to load gzipped kernel modules: kmod can be compiled with support to gzipped modules by giving the --enable-zlib flag - Support to forcefully load modules, both vermagic and modversion - Support to force and nowait removal flags - Configuration files are parsed in the same order as modprobe: files are sorted alphabetically (independently of their dir) and files with the same name obey a precedence order - New tool: kmod-modinfo - kmod-modprobe gained several features to be a 1:1 replacement for modprobe. The only missing things are the options '--showconfig' and '-t / -l'. These last ones have been deprecated long ago and they will be removed from modprobe. A lot of effort has been put on kmod-modprobe to ensure it maintains compabitility with modprobe. - linux-modules@vger.kernel.org became the official mailing list for kmod kmod 1 ====== First version of kmod and its library, libkmod. In the libkmod it's currently possible to: - List modules currently loaded - Get information about loaded modules such as initstate, refcount, holders, sections, address and size - Lookup modules by alias, module name or path - Insert modules: options from configuration and extra options can be passed, but flags are not implemented, yet - Remove modules - Filter list of modules using blacklist - For each module, get the its list of options and install/remove commands - Indexes can be loaded on startup to speedup lookups later Tools provided with the same set of options as in module-init-tools: - kmod-lsmod - kmod-insmod - kmod-rmmod - kmod-modprobe, with some functionality still missing (use of softdep, dump configuration, show modversions)