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1kmod 26
2=======
3
4- Improvements
5	- Add more error-checking in library functions and remove warnings on newer
6	  toolchains
7
8	- Depmod now handles parallel invoctions better by protecting the temporary
9	  files being used
10
11	- Improvements to testsuite and added tests to check the our behavior
12	  regardless of the features enabled in the kernel, or libraries we link to
13
14	- Teach the --show-exports option to modprobe. This works similarly to
15	  --show-modversions, but it reports the exported symbols from that module.
16	  Under the hood this reads the .symtab and .strtab section rather than
17	  __versions so it shows useful data even if kernel is configured without
18	  modversions (CONFIG_MODVERSIONS)
19
20	- Teach pkcs7 parsing to modinfo by using openssl. This allows modinfo to
21	  correctly parse the signature appended to a module by the kernel build
22	  system when configured with CONFIG_MODULE_SIG_ALL, or when externally
23	  signed by the distro. Traditionally modules were signed and a struct
24	  was appended together with the signature to the end of the module.
25	  This has changed on the kernel for pkcs#7 and now the structure isn't
26	  filled out with useful information.  So we have to parse the signature
27	  block in order to return useful data to the user.
28
29	  If kmod is linked with openssl we parse the signature and return the
30	  fields as we do for other signatures. An example of the relevant part
31	  on the output of modinfo is below:
32
33	  Before:
34		  sig_id:         PKCS#7
35		  signer:
36		  sig_key:
37		  sig_hashalgo:   md4
38	  After:
39		  sig_id:         PKCS#7
40		  signer:         Fedora kernel signing key
41		  sig_key:        51:C4:0C:6D:7E:A5:6C:D8:8F:B4:3A:DF:91:78:4F:18:BC:D5:E4:C5
42		  sig_hashalgo:   sha256
43
44	  If kmod is not linked to openssl we just start printing "unknonwn" in the
45	  sig_hashalgo field rather than the bogus value.
46
47
48kmod 25
49=======
50
51- Improvements
52	- Add module signature to modinfo output
53
54	- Add support for external directories in depmod: now there's a new
55	  "external" keyword parsed by depmod when calculating the dependencies.
56	  It allows to add modules to other directories which are not relative
57	  to where the modules are commonly installed.  This results in
58	  modules.dep and friends now understanding absolute paths rather than
59	  relative paths only. For more information see depmod.d(1).
60
61	- Add support for CONFIG_MODULE_REL_CRCS
62
63	- Add missing documentation references in man pages
64
65	- Handle the case in which module has a .TOC symbol already while
66	  calculating dependencies
67
68	- Improve testsuite and allow to use mkosi to run testsuite in different
69	  distros
70
71kmod 24
72=======
73
74- Improvements:
75	- Add more information on dependency loop
76
77	- Sanitize use of strcpy and allow to grow from small strings on stack
78	  (common case) to bigger strings on heap when needed
79
80- Bug fixes
81	- Fix wrong dependency loops being reported by depmod
82
83	- Fix crashes when reporting dependency loops
84
85	- Fix parsing kernel command line containing quotes
86
87	- Fix leaks on error paths
88
89kmod 23
90=======
91
92- Improvements:
93	- Don't add comment to modules.devname if it would otherwise be empty
94	  to play nice with tools detecting empty files
95
96	- Allow building with BSD sed, that doesn't have -E flag
97
98	- Ignore .TOC. symbols in depmod parsing as it's for PPC64 the
99	  equivalent of _GLOBAL_OFFSET_TABLE_
100
101	- Teach modinfo about PKCS#7 module signatures: it doesn't add any
102	  other info besides telling the user the module is signed since
103	  kernel doesn't add other info on the module section
104
105- Bug fixes
106
107	- Fix -s and -p compat options to insmod triggering force flag
108
109	- Fix long lines from /proc/modules not being handled correctly by
110	  kmod_module_new_from_loaded() and kmod_module_get_size() and several
111	  other library functions that use them
112
113	- Fix crash on modinfo while checking for available signature of
114	  unknown type
115
116	- Fix documentation generation with gtk-doc
117
118kmod 22
119=======
120
121- Tools:
122	- Change defaul log level for tools to WARNING rather than ERROR and update
123	  some log levels for current messages
124
125	- depmod doesn't fallback to uname if a bad version is passed in the command
126	  line anymore. We just exit with an error.
127
128	- insmod was taught the -f flag, just like in modprobe. It was previously
129	  silently ignoring it.
130
131- libkmod
132	- New kmod_get_dirname() API to get the module directory set in the
133	  context
134
135- Bug fixes:
136	- Fix return code in error path of kmod_module_insert_module(). We were
137	  previously returning ENOSYS rather than ENOENT.
138
139kmod 21
140=======
141
142- New features:
143	- kmod tool started to learn the "insert" and "remove" commands that
144	  are the simplified versions of the older modprobe tool.  These
145	  commands are still work in progress so they are hidden behind a
146	  --enable-experimental flag during build.  It should not be enabled
147	  unless you know what you're doing.
148	- kmod tool now prints the relevant configuration options it was built
149	  with when the "--version" argument is passed. This helps to mitigate
150	  problems for example when the user is trying to load a compressed
151	  module but kmod was built without support for the compression method.
152
153- Improvements to testsuite:
154	- Cache built modules so it is easier to run "make check" on build
155	  servers by distro maintainers. If kmod is configured with
156	  --disable-test-modules the modules from cache will be used by
157	  "make check". No changes to the tests are needed and all of them
158	  can run fine.
159
160kmod 20
161=======
162- Bug fixes:
163	- Handle bogus values from ELF, making sure they don't overflow while
164	  parsing the file
165	- Fix leak in depmod when -b flag is passed multiple times
166	- Multiple minor fixes from static analysis by coverity and
167	  clang-analyze
168	- Fix race between loading modules and checking if it's loaded in the
169	  kernel
170
171- New features:
172	- There's a change in behavior regarding builtin modules: we now only
173	  consider as builtin those that are present in modules.builtin index.
174	  Previously we were also checking the presence of
175	  /sys/module/<module-name>, but this is racy and only modules that
176	  contain parameters are the ones creating a directory in sysfs.
177
178	  Now some commands will start to fail, e.g. "modprobe vt". Since vt
179	  can't be compiled as a module it's not present in modules.builtin
180	  index. Previously we would report at as builtin, but now we fail
181	  because we couldn't find the module.
182
183- Improvements:
184	- Integration of gcov into the build. Currently libkmod is at ~70%
185	  covered and tools at ~50% by tests in the testsuite. Utility
186	  functions and structures in shared have more than 90% of coverage.
187	- Upload build to coverity
188
189- Improvements to testsuite:
190	- Fix parsing return codes of init_module() calls
191	- Add tests for utility functions in shared/
192	- Add tests for kmod_module_remove_module()
193	- Add playground, in which our own modules are compiled
194	- Port all tests to use modules from module-playground instead of
195	  copying prebuilt modules to the repository
196	- Properly handle binaries that exit with no output
197	- Besides comparing the output of commands, allow to copy to
198	  stdout/stderr
199
200kmod 19
201=======
202
203- Bug fixes:
204	- Fix missing CLOEXEC in library
205	- Fix error message while opening kmod's index
206
207- New features:
208	- Add kmod(8) man page
209	- Allow to build with libc's without be32toh()
210	- Move code around separating common code and data structures into a
211	  shared directory. This allows to share more code between library and
212	  tools, making the binary size of tools smaller.
213	- Clarify tools vs library licenses
214	- static-nodes: when writing in tmpfiles format, indicate that
215	  creation of static nodes should only happen at boot. This is used and
216	  required by systemd-217+.
217
218- Improvements to testsuite:
219	- Add tests for newly created shared/ code
220	- Improve how tests are declared so there's less boilerplate code for
221	  each test.
222
223kmod 18
224=======
225
226- Bug fixes:
227	- Fix leaks in error paths
228	- Fix use-after-free in hash implementation causing a wrong index to be
229	  generated by depmod with out-of-tree modules
230
231- New features:
232	- Calling depmod with modules creating a dependency loop will now make
233	  depmod return an error and not update the indexes. This is to protect
234	  the current index not being overridden by another index that may cause
235	  a boot failure, depending on the buggy module. It's a necessary
236	  change in behavior regarding previous kmod releases and
237	  module-init-tools. The error message was also improved to output
238	  the modules that caused the dependency cycle.
239
240- Improvements to testsuite:
241	- Fix and improve expected-fail test
242	- Add tests for hashmap implementation
243
244kmod 17
245=======
246
247- Bug fixes:
248	- Fix matching a "." in kernel cmdline, making garbage in the command
249	  line be parsed as kmod options
250	- Fix man pages to clarify we don't fallback to parsing modules.dep
251	  but instead we depend on modules.dep.bin (generated by depmod) to
252	  be present
253	- Fix ELF parsing on 32 bit systems assigning the wrong class.
254	- Fix partial matches of search directives in depmod. Previously having
255	  a line in depmod.conf such as "search foo foobar built-in" would cause
256	  unpretictable results because foo is a partial match of foobar as well.
257	- Fix unaligned access in modinfo when getting the signature from a
258	  module
259	- Make sure softdeps are treated as optional dependencies
260
261- New features:
262	- Accept special files given to "-C" switch in modprobe. This way it's
263	  possible to skip system configuration with "modprobe -C /dev/null"
264	- Do not require xsltproc on released tarballs
265	- Don't use Werror anymore
266	- Add experimental python bindings, merged from python-kmod repository
267	  (https://github.com/agrover/python-kmod)
268	- Parse softdeps exported by the kernel as
269	  /lib/modules/`uname -r`/modules.softdep
270
271- Improvements to testsuite:
272	- Check the list of loaded modules after a test
273
274kmod 16
275=======
276
277- Bug fixes:
278	- Fix usage of readdir_r()
279	- Add some missing checks for memory allocation errors
280
281- New features:
282	- Remove option from libkmod to allow waiting on module removal if
283	  the module is being used. It's dangerous since it can block the
284	  caller indefinitely.
285	- Improve compatibility with musl libc
286	- Add fallback implementation for compilers without _Static_assert(),
287	  e.g. gcc < 4.6
288	- Minor optimizations to the hash table
289	- Make depmod warn if a module has incorrect devname specification
290	- Use cleanup attribute
291
292kmod 15
293=======
294
295- Bug fixes:
296	- kmod static-nodes doesn't fail if modules.devname isn't available
297	- Fix getting boolean parameter from kernel cmdline in case the value
298	  is omitted
299	- Fix some mkdir_p() corner cases (used in testsuite and static-nodes)
300
301- New features:
302	- kmod static-nodes creates parent directories if given a -o option
303	- kmod binary statically links to libkmod - if distro is only interested
304	  in the kmod tool (for example in an initrd) it can refrain from
305	  installing the library
306	- Add shell completion for kmod tool
307
308kmod 14
309=======
310
311- Bug fixes:
312	- Fix some format strings
313	- Protect against NULL being passed around to index
314	- Avoid calling syscall() with -1 when finit_module() is not available,
315	  since this doesn't always work
316	- Fix not being able to remove alias due to checking the module's
317	  refcount
318	- Minor fixes and refactors
319
320- New features:
321	- Improve libkmod documentation, particularly on how flags are dealt
322	  with.
323	- Remove ability to build a static libkmod
324	- Add static-nodes command to kmod that parses modules.devname
325	  generating output in useful formats
326
327kmod 13
328=======
329
330- Bug fixes:
331	- Add the long option --symbol-prefix option to depmod (it was absent)
332	  and fix its behavior
333	- Don't abort if there's a bogus line in configuration file like "alias
334	  psmouse off". Some distros are carrying this since the days of
335	  modutils
336
337- New features:
338	- Add support for finit_module(2). If the module is load straight from
339	  the disk and without compression we use finit_module() syscall when
340	  available, falling back to init_module() otherwise
341	- kmod_module_get_info() also returns the signature if the module is
342	  signed and modinfo uses it
343	- Use secure_getenv if available
344	- rmmod understands builtin modules, just like modprobe does
345	- Improve compatibility with musl-libc
346	- Test cases exit with success when receiving a signal if they are
347	  xfail tests
348
349kmod 12
350=======
351
352- Bug fixes:
353	- Fix removing vermagic from module when told to force load a module
354	- Fix removing __versions section when told to force load a module: we
355	  need to mangle the section header, not the section.
356	- modinfo no longer fails while loading a module from file when path
357	  contains ".ko" substring
358
359kmod 11
360=======
361
362- Improvements to testsuite:
363	- Fix testsuite defining symbols twice on 32 bit systems
364	- Allow to check generated files against correct ones
365
366- New features:
367	- libkmod now keeps a file opened after the first call to
368	  kmod_module_get_{info,versions,symbols,dependency_symbols}. This
369	  reduces signficantly the amount of time depmod tool takes to
370	  execute. Particularly if compressed modules are used.
371	- Remove --with-rootprefix from build system. It was not a great idea
372	  after all and should not be use since it causes more harm then
373	  benefits.
374	- Hide --wait option on rmmod. This feature is being targeted for
375	  removal from kernel. rmmod still accepts this option, but it's hidden
376	  now: man page and usage() say nothing about it and if it's used,
377	  user will get a 10s sleep. This way we can check and help if anyone
378	  is using this feature.
379	- Refactor message logging on all tools, giving proper prefix, routing
380	  everything to syslog when asked for, etc.
381
382- Bug fixes:
383	- Fix parsing of modules.order when using compressed modules
384	- Usage messages go to stdout instead of stderr
385	- Fix memory leak in hash implementation
386
387kmod 10
388=======
389
390- New features:
391	- Read coresize from /sys if supported
392
393	- Add flag to kmod_module_probe_insert() to apply blacklisting during
394	  probe only if mod is an alias. Now modprobe uses this flag by default.
395	  This is needed to fix a change in behavior regarding module-init-tools
396	  and ultimately makes us loading a blacklisted module.
397
398- Better formatting in man pages
399
400- Add option to disable building man pages at build time
401
402- Fixes in the testsuite and refactoring of LDPRELOAD'ed libraries
403
404- Re-licensing testsuite as LGPL
405
406kmod 9
407======
408
409- Improvements to the testsuite:
410	- Check for correct handling of softdep loops
411	- Check for correct handling of install command loops
412
413- Bug fixes:
414	- Fix build with compilers that don't support --gc-sections
415	- Handle errors when dealing with gzipped modules
416	- depmod now handles errors while writing indices, so it doesn't end up
417	  with a corrupted index without telling the user
418
419kmod 8
420======
421
422- No new features, small bug fixes only.
423	- Fix a bug in "modprobe -c" output: be compatible with
424	  module-init-tools
425
426	- Give a useful error message when init_module fails due to bad
427	  parameter or unknown symbols
428
429	- Fix doc generation
430
431kmod 7
432======
433
434- Re-order dirs for configuration files to match the change in systemd and
435  udev: now the priority is:
436	1. /etc/modprobe.d
437	2. /run/modprobe.d
438	3. /lib/modprobe.d
439
440- Fix setting CFLAGS/LDFLAGS in build system. This prevented us from not
441  allowing the user to set his preferences.
442
443- Bug fixes:
444	- Return same error codes of module-init-tools when removing modules
445	  with modprobe
446	- Fix builtin output in "--show-depends" when target kernel is not the
447	  same of the running kernel
448	- 'modprobe -r' always look at all command line arguments
449	- Fix '-q' usage in modprobe
450
451kmod 6
452======
453
454- New API in libkmod:
455	- kmod_module_apply_filter(): a generic function to apply filters in a
456	  list of modules. This deprecates the use of
457	  kmod_module_get_filtered_blacklist()
458
459- More tests in testsuite
460
461- Add compatibility with uClibc again
462
463- Lookup modules.builtin.bin to decide if a module is built in kernel
464
465- Downgrade some log messages so we don't annoy people with useless messages
466
467- Bug fixes:
468	- Flag --ignore-loaded was not being properly handled
469	- Infinite loop with softdeps
470	- Infinite loop with dumb user configuration with install commands
471	- Fix leak in index when there's a partial match
472
473- Move repository and tarballs to kernel.org
474
475kmod 5
476======
477
478- Break libkmod's API to insert a module like modprobe does. It now accepts
479  extra an extra argument to print its action and acceptable flags were
480  sanitized.
481
482- Share more code between modprobe and libkmod: using the new version of
483  kmod_module_probe_insert_module() it's possible to share a great amount of
484  code between modprobe and libkmod
485
486- modprobe no longer works with paths: it only accepts module names and/or
487  aliases now.
488
489- testsuite was added to repository, allowing automated tests to be run and
490  easing the way bugs are reproduced.
491
492- modprobe: when dumping configuration ('-c' option) separate config
493  and indexes by adding a commented line between them.
494
495- Fix bugs wrt normalizing aliases and module names
496
497- Fix bug wrt inserting an alias that resolves to multiple modules: we should
498  not stop on the first error, but rather continue to try loading other
499  modules.
500
501- Fix unaligned memory access in hash function, causing depmod to output wrong
502  information in ARMv5
503
504- Fix man page build and install: now they are only installed if tools are
505  enabled
506
507kmod 4
508======
509
510- New APIs in libkmod to:
511	- Get configuration lists: blacklists, install commands, remove
512	  commands, aliases, options and softdeps
513	- Dump indexes
514
515- Several bugs fixed in libkmod, modprobe, depmod and modinfo
516
517- API documentation: if configure with run with --enable-gtk-doc, the API doc
518  will be generated by make. Gtk-doc is required for that.
519
520- Man pages are built, which replace man pages from module-init-tools
521
522- 'include' and 'config' options in *.conf files were deprecated
523
524- configure is not run by autogen.sh. Instead, a common set of options is
525  printed. If you are hacking on kmod, consider using bootstrap-configure
526  script.
527
528- 'modprobe -c' works as expected now. As opposed to module-init-tools, it
529  dumps the parsed configuration, not only the file contents.
530
531kmod 3
532======
533
534- New APIs in libkmod to:
535	- Get symbols from module, parsing the ELF section
536	- Get dependency symbols
537	- Check if resources are still valid or if libkmod must be reloaded
538	- Insert module like modprobe, checking (soft-)dependencies, commands,
539	  blacklist. It can run commands by itself and to call a callback
540	  function.
541
542- Support to load modules compressed with xz
543
544- Tools are now bundled together in a single tool called kmod. It can be
545  called using symlinks with the same names as tools from module-init-tools.
546  E.g: /usr/bin/lsmod -> /usr/bin/kmod. With this we are aiming to complete a
547  1:1 replacement of module-init-tools.
548
549- The only missing tool, depmod, was added to kmod together with the necessary
550  APIs in libkmod.
551
552- If a program using libkmod runs for a long time, as for example udev, it must
553  check if it doesn't have to re-load libkmod. A new helper function was added
554  in libkmod to check if context is still valid and udev is already using it.
555
556- An 'unaligned access' bug was fixed. So those architecture that does not
557  handle unaligned access can use kmod, too.
558
559kmod 2
560======
561
562Some bugs fixed: the worst of them was with an infinite loop when an alias
563matched more than one module.
564
565- New APIs in libkmod to:
566	- Get soft dependencies
567	- Get info from module files parsing ELF
568	- Get modversions from files parsing ELF
569
570- Support to load gzipped kernel modules: kmod can be compiled with support to
571  gzipped modules by giving the --enable-zlib flag
572
573- Support to forcefully load modules, both vermagic and modversion
574
575- Support to force and nowait removal flags
576
577- Configuration files are parsed in the same order as modprobe: files are
578  sorted alphabetically (independently of their dir) and files with the same
579  name obey a precedence order
580
581- New tool: kmod-modinfo
582
583- kmod-modprobe gained several features to be a 1:1 replacement for modprobe.
584  The only missing things are the options '--showconfig' and '-t / -l'. These
585  last ones have been deprecated long ago and they will be removed from
586  modprobe. A lot of effort has been put on kmod-modprobe to ensure it
587  maintains compabitility with modprobe.
588
589- linux-modules@vger.kernel.org became the official mailing list for kmod
590
591kmod 1
592======
593
594First version of kmod and its library, libkmod.
595
596In the libkmod it's currently possible to:
597	- List modules currently loaded
598	- Get information about loaded modules such as initstate, refcount,
599	  holders, sections, address and size
600	- Lookup modules by alias, module name or path
601	- Insert modules: options from configuration and extra options can be
602	  passed, but flags are not implemented, yet
603	- Remove modules
604	- Filter list of modules using blacklist
605	- For each module, get the its list of options and install/remove
606	  commands
607	- Indexes can be loaded on startup to speedup lookups later
608
609Tools provided with the same set of options as in module-init-tools:
610	- kmod-lsmod
611	- kmod-insmod
612	- kmod-rmmod
613	- kmod-modprobe, with some functionality still missing (use of softdep,
614	  dump configuration, show modversions)
615