[ANNOUNCE] kmod 30

[Lucas De Marchi]

kmod 30 is out:

          https://www.kernel.org/pub/linux/utils/kernel/kmod/kmod-30.tar.xz
          https://www.kernel.org/pub/linux/utils/kernel/kmod/kmod-30.tar.sign

- 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.

Shortlog is below:

HuaxinLu (1):
      libkmod: Support SM3 hash algorithm

Lucas De Marchi (30):
      libkmod: Prefer builtin index over builtin.alias
      depmod: Do not duplicate builtin index
      depmod: Stop opening modules.modinfo once per module
      test-initstate: Check for negative value on error
      libkmod-module: Fix return code for kmod_module_new_from_lookup()
      gitignore: ignore gtk-doc.make
      libkmod: Add helper function to iterate lookup options
      libkmod: Update docs about indexes order
      libkmod: Add lookup from module name
      modinfo: Update help message with "modulename"
      modinfo: Allow to force arg as module name
      libkmod: Fix use of sizeof instead of ARRAY_SIZE
      docs: Add missing functions to documentation
      modprobe: Rename rmmod_do_deps_list
      modprobe: Fix holders removal
      modprobe: move check for remove_holders to caller
      modprobe: Make rmmod_do_module() contain all the removal sequence
      depmod: Fix writing over array length
      modprobe: re-use modname variable
      modprobe: Move -R to "Query options"
      libkmod: Allow to ignore log message on module removal
      module-playground: Add debugfs entry in mod-simple
      util: Add time-related functions from testsuite
      util: Add msec variants for time-related functions
      util: Add exponential backoff sleep
      testsuite: Add tests for sleep calculation
      modprobe: Add --wait
      Keep only one readme
      README: Update optional dependencies
      kmod 30

Luis Chamberlain (1):
      libkmod: add a library notice log level print

Masahiro Yamada (2):
      modprobe: fix the NULL-termination of new_argv
      modprobe: remove unneeded variable str_start

Michal Suchanek (1):
      libkmod: Set builtin to no when module is created from path.

Saul Wold (1):
      depmod: Add support for excluding a directory

Yauheni Kaliuta (1):
      libkmod-module: check "new_from_name" return value in get_builtin


Thank you all for the contributions.


Lucas De Marchi