5 All udev tools are merged into a single binary called udevadm now.
6 The old names of the binary are commands for udevadm now. Symlinks
7 provide the functionality of the standalone tools. There is only a
8 single udevadm.8 man page for all tools left.
18 The etc/udev/rules.d/ directory now contains a default set of basic
19 udev rules. This initial version is the result of a rules file merge
20 of Fedora and openSUSE. For these both distros only a few specific
21 rules are left in their own file, named after the distro. Rules which
22 are optionally installed, because they are only valid for a specific
23 architecture, or rules for subsystems which are not always used are
24 in etc/udev/packages/.
30 Dynamic rules can be created in /dev/.udev/rules.d/ to trigger
31 actions by dynamically created rules.
33 SYMLINK=="<value>" matches agains the entries in the list of
34 currently defined symlinks. The links are not created in the
35 filesystem at that point in time, but the values can be matched.
37 RUN{ignore_error}+="<program>" will ignore any exit code from the
38 program and not record as a failed event.
44 Final merge of patches/features from the Ubuntu package.
50 Control characters in filesystem label strings are no longer silenty
51 removed, but hex-encoded, to be able to uniquely identify the device
52 by its symlink in /dev/disk/by-label/.
53 If libvolume_id is used by mount(8), LABEL= will work as expected,
54 if slashes or other characters are used in the label string.
56 To test the existence of a file, TEST=="<file>" and TEST!="<file>"
57 can be specified now. The TEST key accepts an optional mode mask
58 TEST{0100}=="<is executable file>".
60 Scsi_id now supports a mode without expecting scsi-specific sysfs
61 entries to allow the extraction of cciss-device persistent properties.
67 In the future, we may see uuid's which are just simple character
68 strings (see the DDF Raid Specification). For that reason vol_id now
69 exports ID_FS_UUID_SAFE, just like ID_FS_LABEL_SAFE. For things like
70 the creation of symlinks, the *_SAFE values ensure, that no control
71 or whitespace characters are used in the filename.
73 Possible users of libvolume_id, please use the volume_id_get_* functions.
74 The public struct will go away in a future release of the library.
80 Removal of useless extras/eventrecorder.sh.
90 The directory multiplexer for dev.d/ and hotplug.d are finally removed
91 from the udev package.
97 Symlinks can have priorities now, the priority is assigned to the device
98 and specified with OPTIONS="link_priority=100". Devices with higher
99 priorities overwrite the symlinks of devices with lower priorities.
100 If the device that currently owns the link, goes away, the symlink
101 will be removed, and recreated, pointing to the next device with the
102 highest actual priority. This should make /dev/disk/by-{label,uuid,id}
103 more reliable, if multiple devices contain the same metadata and overwrite
106 The dasd_id program is removed from the udev tree, and dasdinfo, with the
107 needed rules, are part of the s390-tools now.
109 Please add KERNEL=="[0-9]*:[0-9]*" to the scsi wait-for-sysfs rule,
110 we may get the scsi sysfs mess fixed some day, and this will only catch
111 the devices we are looking for.
113 USB serial numbers for storage devices have the target:lun now appended,
114 to make it possibble to distinguish broken multi-lun devices with all
115 the same SCSI identifiers.
117 Note: The extra "run_directory" which searches and executes stuff in
118 /etc/hotplug.d/ and /etc/dev.d/ is long deprecated, and will be removed
119 with the next release. Make sure, that you don't use it anymore, or
120 provides your own implementation of that inefficient stuff.
121 We are tired of reports about a "slow udev", because these directories
122 contain stuff, that runs with _every_ event, instead of using rules,
123 that run programs only for the matching events.
133 DRIVER== will match only for devices that actually have a real
134 driver. DRIVERS== must be used, if parent devices should be
135 included in the match.
137 Libvolume_id's "linux_raid" detection needed another fix.
145 Add additional check to volume_id detection of via_raid, cause
146 some company decided to put a matching pattern all over the empty
147 storage area of their music players.
151 Fix path_id for SAS devices.
155 The udev daemon can be started with --debug-trace now, which will
156 execute all events serialized to get a chance to catch a possible
157 action that crashes the box.
159 A warning is logged, if PHYSDEV* keys, the "device" link, or a parent
160 device attribute like $attr{../file} is used, only WAIT_FOR_SYSFS rules
161 are excluded from the warning. Referencing parent attributes directly
162 may break when something in the kernel driver model changes. Udev will
163 just find the attribute by walking up the parent chain.
165 Udevtrigger now sorts the list of devices depending on the device
166 dependency, so a "usb" device is triggered after the parent "pci"
171 Revert persistent-storage ata-serial '_' '-' replacement.
177 Udevtrigger can now filter the list of devices to be triggered. Matches
178 for subsystems or sysfs attributes can be specified.
180 The entries in /dev/.udev/queue and /dev/.udev/failed have changed to
181 zero-sized files to avoid pointing to /sys and confuse broken tools which
182 scan the /dev directory. To retry failed events, udevtrigger --retry-failed
185 The rules and scripts to create udev rules for persistent network
186 devices and optical drives are in the extras/rules_generator directory
187 now. If you use something similar, please consider replacing your own
188 version with this, to share the support effort. The rule_generator
189 installs its own rules into /etc/udev/rules.d.
191 The cdrom_id tool installs its own rule now in /etc/udev/rules.d, cause
192 the rule_generator depends on cdrom_id to be called in an earlier rule.
198 Renaming of some key names (the old names still work):
199 BUS -> SUBSYSTEMS, ID -> KERNELS, SYSFS -> ATTRS, DRIVER -> DRIVERS.
200 (The behavior of the key DRIVER will change soon in one of the next
201 releases, to match only the event device, please switch to DRIVERS
202 instead. If DRIVER is used, it will behave like DRIVERS, but an error
204 With the new key names, we have a more consistent and simpler scheme.
205 We can match the properties of the event device only, with: KERNEL,
206 SUBSYSTEM, ATTR, DRIVER. Or include all the parent devices in the match,
207 with: KERNELS, SUBSYSTEMS, ATTRS, DRIVERS. ID, BUS, SYSFS, DRIVER are no
208 longer mentioned in the man page and should be switched in the rule
211 ATTR{file}="value" can be used now, to write to a sysfs file of the
212 event device. Instead of:
213 ..., SYSFS{type}=="0|7|14", RUN+="/bin/sh -c 'echo 60 > /sys$$DEVPATH/timeout'"
215 ..., ATTR{type}=="0|7|14", ATTR{timeout}="60"
217 All the PHYSDEV* keys are deprecated and will be removed from a
219 PHYDEVPATH - is the path of a parent device and should not be
221 PHYSDEVBUS - is just a SUBSYSTEM value of a parent, and can be
222 matched with SUBSYSTEMS==
223 PHYSDEVDRIVER - for bus devices it is available as ENV{DRIVER}.
224 Newer kernels will have DRIVER in the environment,
225 for older kernels udev puts in. Class device will
226 no longer carry this property of a parent and
227 DRIVERS== can be used to match such a parent value.
228 Note that ENV{DRIVER} is only available for a few bus devices, where
229 the driver is already bound at device event time. On coldplug, the
230 events for a lot devices are already bound to a driver, and they will have
231 that value set. But on hotplug, at the time the kernel creates the device,
232 it can't know what driver may claim the device after that, therefore
233 in most cases it will be empty.
235 Failed events should now be re-triggered with:
236 udevtrigger --retry-failed.
237 Please switch to this command, so we keep the details of the /dev/.udev/failed/
238 files private to the udev tools. We may need to switch the current symlink
239 target, cause some obviously broken tools try to scan all files in /dev
240 including /dev/.udev/, find the links to /sys and end up stat()'ing sysfs files
241 million times. This takes ages on slow boxes.
243 The udevinfo attribute walk (-a) now works with giving a device node
244 name (-n) instead of a devpath (-p). The query now always works, also when
245 no database file was created by udev.
247 The built-in /etc/passwd /etc/group parser is removed, we always depend on
248 getpwnam() and getgrnam() now. One of the next releases will depend on
249 fnmatch() and may use getopt_long().
253 Bugfixes and small improvements.
257 Fix path_id for recent kernels.
263 Added support for swapping network interface names, by temporarily
264 renaming the device and wait for the target name to become free.
268 The built-in MODALIAS key and substitution is removed.
272 The binary firmware helper is replaced by the usual simple
273 shell script. Udevsend is removed from the tree.
281 Some more keys require the correct use of '==' and '=' depending
282 on the kind of operation beeing an assignment or a match. Rules
283 with invalid operations are skipped and logged to syslog. Please
284 test with udevtest if the parsing of your rules throws errors and
285 fix possibly broken rules.
289 Provide "udevsettle" to wait for all current udev events to finish.
290 It also watches the current kernel netlink queue by comparing the
291 even sequence number to make sure that there are no current pending
292 events that have not already arrived in the daemon.
296 Fix rule to skip persistent rules for removable IDE devices, which
297 also skipped optical IDE drives.
299 All *_id program are installed in /lib/udev/ by default now.
301 No binary is stripped anymore as this should be done in the
302 packaging process and not at build time.
304 libvolume_id is provided as a shared library now and vol_id is
305 linked against it. Also one of the next HAL versions will require
306 this library, and the HAL build process will also require the
307 header file to be installed. The copy of the same code in HAL will
308 be removed to have only a single copy left on the system.
312 Add persistent links for SCSI tapes. The rules file is renamed
313 to 60-persistent-storage.rules.
315 Create persistent path for usb devices. Can be used for all sorts
316 of devices that can't be distinguished by other properties like
317 multiple identical keyboards and mice connected to the same box.
319 Provide "udevtrigger" program to request events on coldplug. The
320 shell script is much too slow with thousends of devices.
324 Fix persistent disk rules to exclude removable IDE drives.
326 Warn if %e, $modalias or MODALIAS is used.
330 Fix queue export, which wasn't correct for subsequent add/remove
331 events for the same device.
335 Fix cramfs detection on big endian.
337 Make WAIT_FOR_SYSFS usable in "normal" rules and silent if the whole
342 If BUS== and SYSFS{}== have been used in the same rule, the sysfs
343 attributes were only checked at the parent device that matched the
344 by BUS requested subsystem. Fix it to also look at the device we
345 received the event for.
347 Build variable CROSS has changed to CROSS_COMPILE to match the kernel
352 Fix a bug where NAME="" would prevent RUN from beeing executed.
354 RUN="/bin/program" does not longer automatically add the subsystem
355 as the first parameter. This is from the days of /sbin/hotplug
356 which is dead now and it's just confusing to need to add a space at
357 the end of the program name to prevent this.
358 If you use rules that need the subsystem as the first parameter,
359 like the old "udev_run_hotlugd" and "udev_run_devd", add the subsystem
360 to the key like RUN+="/bin/program $env{SUBSYSTEM}".
364 The udev man page has moved to udev(7) as it does not describe a command
365 anymore. The programs udev, udevstart and udevsend are no longer installed
366 by default and must be copied manually, if they should be installed or
367 included in a package.
369 Fix a bug where "ignore_device" could run earlier collected RUN keys before
370 the ignore rule was applied.
372 More preparation for future sysfs changes. usb_id and scsi_id no longer
373 depend on a magic order of devices in the /devices chain. Specific devices
374 should be requested by their subsytem.
376 This will always find the scsi parent device without depending on a specific
378 dev = sysfs_device_get(devpath);
379 dev_usb = sysfs_device_get_parent_with_subsystem(dev, "scsi");
381 The "device" link in the current sysfs layout will be automatically
382 _resolved_ as a parent and in the new sysfs layout it will just _be_ the
383 parent in the devpath. If a device is requested by it's symlink, like all
384 class devices in the new sysfs layout will look like, it gets automatically
385 resolved and substituted with the real devpath and not the symlink path.
388 A similar logic must be applied to _all_ sysfs users, including
389 scripts, that search along parent devices in sysfs. The explicit use of
390 the "device" link must be avoided. With the future sysfs layout all
391 DEVPATH's will start with /devices/ and have a "subsystem" symlink poiting
392 back to the "class" or the "bus". The layout of the parent devices in
393 /devices is not necessarily expected to be stable across kernel releases and
394 searching for parents by their subsystem should make sysfs users tolerant
395 for changed parent chains.
399 Prepare udev to work with the experimental kernel patch, that moves
400 /sys/class devices to /sys/devices and /sys/block to /sys/class/block.
402 Clarify BUS, ID, $id usage and fix $id behavior. This prepares for
403 moving the class devices to /sys/devices.
405 Thanks again to Marco for help finding a hopefully nice compromise
406 to make %b simpler and working again.
410 Complete removal of libsysfs, replaced by simple helper functions
411 which are much simpler and a bit faster. The udev daemon operatesentirely
412 on event parameters and does not use sysfs for simple rules anymore.
413 Please report any new bugs/problems, that may be caused by this big
414 change. They will be fixed immediately.
416 The enumeration format character '%e' is deprecated and will be
417 removed sometimes from a future udev version. It never worked correctly
418 outside of udevstart, so we can't use it with the new parallel
419 coldplug. A simple enumeration is as useless as the devfs naming
420 scheme, just get rid of both if you still use it.
422 MODALIAS and $modalias is not needed and will be removed from one of
423 the next udev versions, replace it in all rules with ENV{MODALIAS} or
424 the sysfs "modalias" value.
426 Thanks a lot to Marco for all his help on finding and fixing bugs.
430 Let scsi_id request libata drive serial numbers from page 0x80.
432 Renamed etc/udev/persistent.rules to persistent-disk.rules and
433 added /dev/disk/by-name/* for device mapper device names.
435 Removed %e from the man page. It never worked reliably outside
436 of udevstart and udevstart is no longer recommended to use.
440 Symlinks are now exported to the event environment. Hopefully it's no
441 longer needed to run udevinfo from an event process, like it was
442 mentioned on the hotplug list:
443 UDEV [1134776873.702967] add@/block/sdb
446 DEVLINKS=/dev/disk/by-id/usb-IBM_Memory_Key_0218B301030027E8 /dev/disk/by-path/usb-0218B301030027E8:0:0:0
450 Fix a problem if udevsend is used as the hotplug handler and tries to use
451 syslog, which causes a "vc" event loop. 2.6.15 will make udevsend obsolete
452 and this kind of problems will hopefully go away soon.
456 All built-in logic to work around bad sysfs timing is removed with this
457 version. The need to wait for sysfs files is almost fixed with a kernel
458 version that doesn't work with this udev version anyway. Until we fix
459 the timing of the "bus" link creation, the former integrated logic should
460 be emulated by a rule placed before all other rules:
461 ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus"
463 The option "udev_db" does no longer exist. All udev state will be in
464 /$udev_root/.udev/ now, there is no longer an option to set this
466 If the init script or something else used this value, just depend on
467 this hardcoded path. But remember _all_content_ of this directory is
468 still private to udev and can change at any time.
470 Default location for rule sripts and helper programs is now: /lib/udev/.
471 Everything that is not useful on the commandline should go into this
472 directory. Some of the helpers in the extras folder are installed there
473 now. The rules need to be changed, to find the helpers there.
475 Also /lib/udev/devices is recommended as a directory where packages or
476 the user can place real device nodes, which get copied over to /dev at
477 every boot. This should replace the various solutions with custom config
480 Udevsend does no longer start the udev daemon. This must be done with
481 the init script that prepares /dev on tmpfs and creates the initial nodes,
482 before starting the daemon.
486 Silent a too verbose error logging for the old hotplug.d/ dev.d/
489 The copy of klibc is removed. A systemwide installed version of klibc
490 should be used to build a klibc udev now.
494 NAME="" will not create any nodes, but execute RUN keys. To completely
495 ignore an event the OPTION "ignore_device" should be used.
497 After removal of the reorder queue, events with a TIMEOUT can be executed
498 without any queuing now.
502 Fixed bug in udevd, if inotify is not available. We depend on netlink
503 uevents now, kernels without that event source will not work with that
504 version of udev anymore.
508 The rule parsing happens now in the daemon once at startup, all udev
509 event processes inherit the already parsed rules from the daemon.
510 It is shipped with SUSE10.0 and reduces heavily the system load at
511 startup. The option to save precompiled rules and let the udev process
512 pick the them up is removed, as it's no longer needed.
514 Kernel 2.6.15 will have symlinks at /class/input pointing to the real
515 device. Libsysfs is changed to "translate" the requested link into the
516 real device path, as it would happen with the hotplug event. Otherwise
517 device removal and the udev database will not work.
519 Using 'make STRIPCMD=' will leave the binaries unstripped for debugging
522 A few improvements for vol_id, the filesytem probing code.
526 Fix a stupid typo in extras/run_directory for "make install".
528 scsi_id creates the temporary devnode now in /dev for usage with a
529 non-writable /tmp directory.
531 The uevent kernel socket buffer can carry app. 50.000 events now,
532 let's see who can break this again. :)
534 The upcoming kernel will have a new input driver core integration.
535 Some class devices are now symlinks to the real device. libsysfs
536 needs a fix for this to work correctly. Udevstart of older udev
537 versions will _not_ create these devices!
541 Fix a 'install' target in the Makefile, that prevents EXTRAS from
546 A bunch of mostly trivial bugfixes. From now on no node name or
547 symlink name can contain any character than plain whitelisted ascii
548 characters or validated utf8 byte-streams. This is needed for the
549 /dev/disk/by-label/* links, because we import untrusted data and
550 export it to the filesystem.
554 More bugfixes. If udevd was started from the kernel, we don't
555 have stdin/stdout/stderr, which broke the forked tools in some
560 Bugfix. udevstart event ordering was broken for a long time.
561 The new run_program() uncovered it, because /dev/null was not
562 available while we try to run external programs.
563 Now udevstart should create it before we run anything.
567 Minor bugfixes and some distro rules updates. If you don't have the
568 persistent disk rules in /dev/disk/by-*/* on your distro, just
569 grab it from here. :)
573 We can use socket communication now to pass events from udev to
575 RUN+="socket:/org/freedesktop/hal/udev_event"
576 will pass the whole udev event to the HAL daemon without the need
577 for a forked helper. (See ChangeLog for udevmonitor, as an example)
581 Mostly bugfixes and see ChangeLog.
583 The test for the existence of an environment value should be
585 ENV{KEY}=="*" to ENV{KEY}=="?*"
586 because "*" will not fail anymore, if the key does not exist or
591 Bugfixes and a few tweaks described in the ChangeLog.
595 Mostly a Bugfix release.
597 Added WAIT_FOR_SYSFS="<attribute>" to be able to fight against the sysfs
598 timing with custom rules.
602 We changed the internal rule storage format. Our large rule files took
603 2 MB of RAM, with the change we are down to 99kB.
605 If the device-node has been created with default name and no symlink or
606 options are to remenber, it is not longer stored in the udevdb. HAL will
607 need to be updated to work correctly with that change.
609 To overrride optimization flags, OPTFLAGS may be used now.
617 Major changes happened with this release. The goal is to take over the
618 complete kernel-event handling and provide a more efficient way to dispatch
619 kernel events. Replacing most of the current shell script logic and the
620 kernel forked helper with a netlink-daemon and a rule-based event handling.
622 o udevd listens to netlink events now. The first valid netlink event
623 will make udevd ignore any message from udevsend that contains a
624 SEQNUM, to avoid duplicate events. The forked events can be disabled
626 echo "" > /proc/sys/kernel/hotplug
627 For full support, the broken input-subsytem needs to be fixed, not to
628 bypass the driver core.
630 o /etc/dev.d/ + /etc/hotplug.d/ directory multiplexing is completely
631 removed from udev itself and must be emulated by calling small
632 helper binaries provided in the extras folder:
633 make EXTRAS=extras/run_directory/
634 will build udev_run_devd and udev_run_hotplugd, which can be called
635 from a rule if needed:
636 RUN+="/sbin/udev_run_hotplugd"
637 The recommended way to handle this is to convert all the calls from
638 the directories to explicit udev rules and get completely rid of the
639 multiplexing. (To catch a ttyUSB event, you now no longer need to
640 fork and exit 300 tty script instances you are not interested in, it
641 is just one rule that matches exactly the device.)
643 o udev handles now _all_ events not just events for class and block
644 devices, this way it is possible to control the complete event
645 behavior with udev rules. Especially useful for rules like:
646 ACTION="add", DEVPATH="/devices/*", MODALIAS=="?*", RUN+="/sbin/modprobe $modalias"
648 o As used in the modalias rule, udev supports now textual
649 substitution placeholder along with the usual format chars. This
650 needs to be documented, for now it's only visible in udev_rules_parse.c.
652 o The rule keys support now more operations. This is documented in the
653 man page. It is possible to add values to list-keys like the SYMLINK
654 and RUN list with KEY+="value" and to clear the list by assigning KEY="".
655 Also "final"-assignments are supported by using KEY:="value", which will
656 prevent changing the key by any later rule.
658 o kernel 2.6.12 has the "detached_state" attribute removed from
659 sysfs, which was used to recognize sysfs population. We switched that
660 to wait for the "bus" link, which is only available in kernels after 2.6.11.
661 Running this udev version on older kernels may cause a short delay for
664 o To provide infrastructure for persistent device naming, the id programs:
665 scsi_id, vol_id (former udev_volume_id), and ata_id (new) are able now
666 to export the probed data in environment key format:
667 pim:~ # /sbin/ata_id --export /dev/hda
668 ID_MODEL=HTS726060M9AT00
669 ID_SERIAL=MRH401M4G6UM9B
673 KERNEL="hd*[!0-9]", IMPORT="/sbin/ata_id --export $tempnode"
674 KERNEL="hd*[!0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_MODEL}_$env{ID_SERIAL}"
677 kay@pim:~> tree /dev/disk
680 | |-- HTS726060M9AT00_MRH401M4G6UM9B -> ../../hda
681 | `-- IBM-Memory_Key -> ../../sda
683 | |-- swap -> ../../hda1
684 | |-- date -> ../../sda1
685 | `-- home -> ../../hda3
687 |-- 2E08712B0870F2E7 -> ../../hda3
688 |-- 9352cfef-7687-47bc-a2a3-34cf136f72e1 -> ../../hda1
689 |-- E845-7A89 -> ../../sda1
690 `-- b2a61681-3812-4f13-a4ff-920d70604299 -> ../../hda2
692 The IMPORT= operation will import these keys in the environment and make
693 it available for later PROGRAM= and RUN= executed programs. The keys are
694 also stored in the udevdb and can be queried from there with one of the
697 o A few binaries are silently added to the repository, which can be used
698 to replay kernel events from initramfs instead of using coldplug. udevd
699 can be instructed now to queue-up events while the stored events from
700 initramfs are filled into the udevd-queue. This code is still under
701 development and there is no documentation now besides the code itself.
702 The additional binaries get compiled, but are not installed by default.
704 o There is also a temporary fix for a performance problem where too many
705 events happen in parallel and every event needs to parse the rules.
706 udev can now read precompiled rules stored on disk. This is likely to be
707 replaced by a more elegant solution in a future udev version.
711 With kernel version 2.6.12, the sysfs file "detached_state" was removed.
712 Fix for libsysfs not to expect this file was added.
716 All rules are applied now, but only the first matching rule with a NAME-key
717 will be applied. All later rules with NAME-key are completely ignored. This
718 way system supplied symlinks or permissions gets applied to user-defined
722 Please check your rules setup, if you may need to add OPTIONS="last_rule"
723 to some rules, to keep the old behavior.
725 The rules are read on "remove"-events too. That makes is possible to match
726 with keys that are available on remove (KERNEL, SUBSYSTEM, ID, ENV, ...) to
727 instruct udev to ignore an event (OPTIONS="ignore_device").
728 The new ACTION-key may be used to let a rule act only at a "remove"-event.
730 The new RUN-key supports rule-based execution of programs after device-node
731 handling. This is meant as a general replacement for the dev.d/-directories
732 to give fine grained control over the execution of programs.
734 The %s{}-sysfs format char replacement values are searched at any of the
735 devices in the device chain now, not only at the class-device.
737 We support log priority levels now. The value udev_log in udev.conf is used
738 to determine what is printed to syslog. This makes it possible to
739 run a version with compiled-in debug messages in a production environment
740 which is sometimes needed to find a bug.
741 It is still possible to supress the inclusion of _any_ syslog usage with
742 USE_LOG=false to create the smallest possible binaries if needed.
743 The configured udev_log value can be overridden with the environment variable
748 Possible use of a system-wide klibc:
749 make USE_KLIBC=true KLCC=/usr/bin/klcc all
750 will link against an external klibc and our own version will be ignored.
754 We support an unlimited count of symlinks now.
756 If USE_STATIC=true is passed to a glibc build, we link statically and use
757 a built-in userdb parser to resolve user and group names.
759 The PLACE= key is gone. It can be replaced by an ID= for a long time, because
760 we walk up the chain of physical devices to find a match.
762 The KEY="<value>" format supports '=', '==', '!=,' , '+=' now. This makes it
763 easy to skip certain attribute matches without composing rules with weird
764 character class negations like:
765 KERNEL="[!s][!c][!d]*"
766 this can now be replaced with:
768 The current simple '=' is still supported, and should work as it does today,
769 but existing rules should be converted if possible, to be better readable.
771 We have new ENV{}== key now, to match against a maximum of 5 environment
774 udevstart is its own binary again, because we don't need co carry this araound
775 with every forked event.
~ianmdlvl / elogind.git / blob