3 udevstart is removed from the tree, it did not get installed for
4 a long time now and is long replaced by trigger and settle.
10 All udev tools are merged into a single binary called udevadm.
11 The old names of the tools are built-in commands in udevadm now.
12 Symlinks to udevadm, with the names of the old tools, provide
13 the same functionality as the standalone tools. There is also
14 only a single udevadm.8 man page left for all tools.
16 Tools like mkinitramfs should be checked, if they need to include
17 udevadm in the list of files.
27 The etc/udev/rules.d/ directory now contains a default set of basic
28 udev rules. This initial version is the result of a rules file merge
29 of Fedora and openSUSE. For these both distros only a few specific
30 rules are left in their own file, named after the distro. Rules which
31 are optionally installed, because they are only valid for a specific
32 architecture, or rules for subsystems which are not always used are
33 in etc/udev/packages/.
39 Dynamic rules can be created in /dev/.udev/rules.d/ to trigger
40 actions by dynamically created rules.
42 SYMLINK=="<value>" matches agains the entries in the list of
43 currently defined symlinks. The links are not created in the
44 filesystem at that point in time, but the values can be matched.
46 RUN{ignore_error}+="<program>" will ignore any exit code from the
47 program and not record as a failed event.
53 Final merge of patches/features from the Ubuntu package.
59 Control characters in filesystem label strings are no longer silenty
60 removed, but hex-encoded, to be able to uniquely identify the device
61 by its symlink in /dev/disk/by-label/.
62 If libvolume_id is used by mount(8), LABEL= will work as expected,
63 if slashes or other characters are used in the label string.
65 To test the existence of a file, TEST=="<file>" and TEST!="<file>"
66 can be specified now. The TEST key accepts an optional mode mask
67 TEST{0100}=="<is executable file>".
69 Scsi_id now supports a mode without expecting scsi-specific sysfs
70 entries to allow the extraction of cciss-device persistent properties.
76 In the future, we may see uuid's which are just simple character
77 strings (see the DDF Raid Specification). For that reason vol_id now
78 exports ID_FS_UUID_SAFE, just like ID_FS_LABEL_SAFE. For things like
79 the creation of symlinks, the *_SAFE values ensure, that no control
80 or whitespace characters are used in the filename.
82 Possible users of libvolume_id, please use the volume_id_get_* functions.
83 The public struct will go away in a future release of the library.
89 Removal of useless extras/eventrecorder.sh.
99 The directory multiplexer for dev.d/ and hotplug.d are finally removed
100 from the udev package.
106 Symlinks can have priorities now, the priority is assigned to the device
107 and specified with OPTIONS="link_priority=100". Devices with higher
108 priorities overwrite the symlinks of devices with lower priorities.
109 If the device that currently owns the link, goes away, the symlink
110 will be removed, and recreated, pointing to the next device with the
111 highest actual priority. This should make /dev/disk/by-{label,uuid,id}
112 more reliable, if multiple devices contain the same metadata and overwrite
115 The dasd_id program is removed from the udev tree, and dasdinfo, with the
116 needed rules, are part of the s390-tools now.
118 Please add KERNEL=="[0-9]*:[0-9]*" to the scsi wait-for-sysfs rule,
119 we may get the scsi sysfs mess fixed some day, and this will only catch
120 the devices we are looking for.
122 USB serial numbers for storage devices have the target:lun now appended,
123 to make it possibble to distinguish broken multi-lun devices with all
124 the same SCSI identifiers.
126 Note: The extra "run_directory" which searches and executes stuff in
127 /etc/hotplug.d/ and /etc/dev.d/ is long deprecated, and will be removed
128 with the next release. Make sure, that you don't use it anymore, or
129 provides your own implementation of that inefficient stuff.
130 We are tired of reports about a "slow udev", because these directories
131 contain stuff, that runs with _every_ event, instead of using rules,
132 that run programs only for the matching events.
142 DRIVER== will match only for devices that actually have a real
143 driver. DRIVERS== must be used, if parent devices should be
144 included in the match.
146 Libvolume_id's "linux_raid" detection needed another fix.
154 Add additional check to volume_id detection of via_raid, cause
155 some company decided to put a matching pattern all over the empty
156 storage area of their music players.
160 Fix path_id for SAS devices.
164 The udev daemon can be started with --debug-trace now, which will
165 execute all events serialized to get a chance to catch a possible
166 action that crashes the box.
168 A warning is logged, if PHYSDEV* keys, the "device" link, or a parent
169 device attribute like $attr{../file} is used, only WAIT_FOR_SYSFS rules
170 are excluded from the warning. Referencing parent attributes directly
171 may break when something in the kernel driver model changes. Udev will
172 just find the attribute by walking up the parent chain.
174 Udevtrigger now sorts the list of devices depending on the device
175 dependency, so a "usb" device is triggered after the parent "pci"
180 Revert persistent-storage ata-serial '_' '-' replacement.
186 Udevtrigger can now filter the list of devices to be triggered. Matches
187 for subsystems or sysfs attributes can be specified.
189 The entries in /dev/.udev/queue and /dev/.udev/failed have changed to
190 zero-sized files to avoid pointing to /sys and confuse broken tools which
191 scan the /dev directory. To retry failed events, udevtrigger --retry-failed
194 The rules and scripts to create udev rules for persistent network
195 devices and optical drives are in the extras/rules_generator directory
196 now. If you use something similar, please consider replacing your own
197 version with this, to share the support effort. The rule_generator
198 installs its own rules into /etc/udev/rules.d.
200 The cdrom_id tool installs its own rule now in /etc/udev/rules.d, cause
201 the rule_generator depends on cdrom_id to be called in an earlier rule.
207 Renaming of some key names (the old names still work):
208 BUS -> SUBSYSTEMS, ID -> KERNELS, SYSFS -> ATTRS, DRIVER -> DRIVERS.
209 (The behavior of the key DRIVER will change soon in one of the next
210 releases, to match only the event device, please switch to DRIVERS
211 instead. If DRIVER is used, it will behave like DRIVERS, but an error
213 With the new key names, we have a more consistent and simpler scheme.
214 We can match the properties of the event device only, with: KERNEL,
215 SUBSYSTEM, ATTR, DRIVER. Or include all the parent devices in the match,
216 with: KERNELS, SUBSYSTEMS, ATTRS, DRIVERS. ID, BUS, SYSFS, DRIVER are no
217 longer mentioned in the man page and should be switched in the rule
220 ATTR{file}="value" can be used now, to write to a sysfs file of the
221 event device. Instead of:
222 ..., SYSFS{type}=="0|7|14", RUN+="/bin/sh -c 'echo 60 > /sys$$DEVPATH/timeout'"
224 ..., ATTR{type}=="0|7|14", ATTR{timeout}="60"
226 All the PHYSDEV* keys are deprecated and will be removed from a
228 PHYDEVPATH - is the path of a parent device and should not be
230 PHYSDEVBUS - is just a SUBSYSTEM value of a parent, and can be
231 matched with SUBSYSTEMS==
232 PHYSDEVDRIVER - for bus devices it is available as ENV{DRIVER}.
233 Newer kernels will have DRIVER in the environment,
234 for older kernels udev puts in. Class device will
235 no longer carry this property of a parent and
236 DRIVERS== can be used to match such a parent value.
237 Note that ENV{DRIVER} is only available for a few bus devices, where
238 the driver is already bound at device event time. On coldplug, the
239 events for a lot devices are already bound to a driver, and they will have
240 that value set. But on hotplug, at the time the kernel creates the device,
241 it can't know what driver may claim the device after that, therefore
242 in most cases it will be empty.
244 Failed events should now be re-triggered with:
245 udevtrigger --retry-failed.
246 Please switch to this command, so we keep the details of the /dev/.udev/failed/
247 files private to the udev tools. We may need to switch the current symlink
248 target, cause some obviously broken tools try to scan all files in /dev
249 including /dev/.udev/, find the links to /sys and end up stat()'ing sysfs files
250 million times. This takes ages on slow boxes.
252 The udevinfo attribute walk (-a) now works with giving a device node
253 name (-n) instead of a devpath (-p). The query now always works, also when
254 no database file was created by udev.
256 The built-in /etc/passwd /etc/group parser is removed, we always depend on
257 getpwnam() and getgrnam() now. One of the next releases will depend on
258 fnmatch() and may use getopt_long().
262 Bugfixes and small improvements.
266 Fix path_id for recent kernels.
272 Added support for swapping network interface names, by temporarily
273 renaming the device and wait for the target name to become free.
277 The built-in MODALIAS key and substitution is removed.
281 The binary firmware helper is replaced by the usual simple
282 shell script. Udevsend is removed from the tree.
290 Some more keys require the correct use of '==' and '=' depending
291 on the kind of operation beeing an assignment or a match. Rules
292 with invalid operations are skipped and logged to syslog. Please
293 test with udevtest if the parsing of your rules throws errors and
294 fix possibly broken rules.
298 Provide "udevsettle" to wait for all current udev events to finish.
299 It also watches the current kernel netlink queue by comparing the
300 even sequence number to make sure that there are no current pending
301 events that have not already arrived in the daemon.
305 Fix rule to skip persistent rules for removable IDE devices, which
306 also skipped optical IDE drives.
308 All *_id program are installed in /lib/udev/ by default now.
310 No binary is stripped anymore as this should be done in the
311 packaging process and not at build time.
313 libvolume_id is provided as a shared library now and vol_id is
314 linked against it. Also one of the next HAL versions will require
315 this library, and the HAL build process will also require the
316 header file to be installed. The copy of the same code in HAL will
317 be removed to have only a single copy left on the system.
321 Add persistent links for SCSI tapes. The rules file is renamed
322 to 60-persistent-storage.rules.
324 Create persistent path for usb devices. Can be used for all sorts
325 of devices that can't be distinguished by other properties like
326 multiple identical keyboards and mice connected to the same box.
328 Provide "udevtrigger" program to request events on coldplug. The
329 shell script is much too slow with thousends of devices.
333 Fix persistent disk rules to exclude removable IDE drives.
335 Warn if %e, $modalias or MODALIAS is used.
339 Fix queue export, which wasn't correct for subsequent add/remove
340 events for the same device.
344 Fix cramfs detection on big endian.
346 Make WAIT_FOR_SYSFS usable in "normal" rules and silent if the whole
351 If BUS== and SYSFS{}== have been used in the same rule, the sysfs
352 attributes were only checked at the parent device that matched the
353 by BUS requested subsystem. Fix it to also look at the device we
354 received the event for.
356 Build variable CROSS has changed to CROSS_COMPILE to match the kernel
361 Fix a bug where NAME="" would prevent RUN from beeing executed.
363 RUN="/bin/program" does not longer automatically add the subsystem
364 as the first parameter. This is from the days of /sbin/hotplug
365 which is dead now and it's just confusing to need to add a space at
366 the end of the program name to prevent this.
367 If you use rules that need the subsystem as the first parameter,
368 like the old "udev_run_hotlugd" and "udev_run_devd", add the subsystem
369 to the key like RUN+="/bin/program $env{SUBSYSTEM}".
373 The udev man page has moved to udev(7) as it does not describe a command
374 anymore. The programs udev, udevstart and udevsend are no longer installed
375 by default and must be copied manually, if they should be installed or
376 included in a package.
378 Fix a bug where "ignore_device" could run earlier collected RUN keys before
379 the ignore rule was applied.
381 More preparation for future sysfs changes. usb_id and scsi_id no longer
382 depend on a magic order of devices in the /devices chain. Specific devices
383 should be requested by their subsytem.
385 This will always find the scsi parent device without depending on a specific
387 dev = sysfs_device_get(devpath);
388 dev_usb = sysfs_device_get_parent_with_subsystem(dev, "scsi");
390 The "device" link in the current sysfs layout will be automatically
391 _resolved_ as a parent and in the new sysfs layout it will just _be_ the
392 parent in the devpath. If a device is requested by it's symlink, like all
393 class devices in the new sysfs layout will look like, it gets automatically
394 resolved and substituted with the real devpath and not the symlink path.
397 A similar logic must be applied to _all_ sysfs users, including
398 scripts, that search along parent devices in sysfs. The explicit use of
399 the "device" link must be avoided. With the future sysfs layout all
400 DEVPATH's will start with /devices/ and have a "subsystem" symlink poiting
401 back to the "class" or the "bus". The layout of the parent devices in
402 /devices is not necessarily expected to be stable across kernel releases and
403 searching for parents by their subsystem should make sysfs users tolerant
404 for changed parent chains.
408 Prepare udev to work with the experimental kernel patch, that moves
409 /sys/class devices to /sys/devices and /sys/block to /sys/class/block.
411 Clarify BUS, ID, $id usage and fix $id behavior. This prepares for
412 moving the class devices to /sys/devices.
414 Thanks again to Marco for help finding a hopefully nice compromise
415 to make %b simpler and working again.
419 Complete removal of libsysfs, replaced by simple helper functions
420 which are much simpler and a bit faster. The udev daemon operatesentirely
421 on event parameters and does not use sysfs for simple rules anymore.
422 Please report any new bugs/problems, that may be caused by this big
423 change. They will be fixed immediately.
425 The enumeration format character '%e' is deprecated and will be
426 removed sometimes from a future udev version. It never worked correctly
427 outside of udevstart, so we can't use it with the new parallel
428 coldplug. A simple enumeration is as useless as the devfs naming
429 scheme, just get rid of both if you still use it.
431 MODALIAS and $modalias is not needed and will be removed from one of
432 the next udev versions, replace it in all rules with ENV{MODALIAS} or
433 the sysfs "modalias" value.
435 Thanks a lot to Marco for all his help on finding and fixing bugs.
439 Let scsi_id request libata drive serial numbers from page 0x80.
441 Renamed etc/udev/persistent.rules to persistent-disk.rules and
442 added /dev/disk/by-name/* for device mapper device names.
444 Removed %e from the man page. It never worked reliably outside
445 of udevstart and udevstart is no longer recommended to use.
449 Symlinks are now exported to the event environment. Hopefully it's no
450 longer needed to run udevinfo from an event process, like it was
451 mentioned on the hotplug list:
452 UDEV [1134776873.702967] add@/block/sdb
455 DEVLINKS=/dev/disk/by-id/usb-IBM_Memory_Key_0218B301030027E8 /dev/disk/by-path/usb-0218B301030027E8:0:0:0
459 Fix a problem if udevsend is used as the hotplug handler and tries to use
460 syslog, which causes a "vc" event loop. 2.6.15 will make udevsend obsolete
461 and this kind of problems will hopefully go away soon.
465 All built-in logic to work around bad sysfs timing is removed with this
466 version. The need to wait for sysfs files is almost fixed with a kernel
467 version that doesn't work with this udev version anyway. Until we fix
468 the timing of the "bus" link creation, the former integrated logic should
469 be emulated by a rule placed before all other rules:
470 ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus"
472 The option "udev_db" does no longer exist. All udev state will be in
473 /$udev_root/.udev/ now, there is no longer an option to set this
475 If the init script or something else used this value, just depend on
476 this hardcoded path. But remember _all_content_ of this directory is
477 still private to udev and can change at any time.
479 Default location for rule sripts and helper programs is now: /lib/udev/.
480 Everything that is not useful on the commandline should go into this
481 directory. Some of the helpers in the extras folder are installed there
482 now. The rules need to be changed, to find the helpers there.
484 Also /lib/udev/devices is recommended as a directory where packages or
485 the user can place real device nodes, which get copied over to /dev at
486 every boot. This should replace the various solutions with custom config
489 Udevsend does no longer start the udev daemon. This must be done with
490 the init script that prepares /dev on tmpfs and creates the initial nodes,
491 before starting the daemon.
495 Silent a too verbose error logging for the old hotplug.d/ dev.d/
498 The copy of klibc is removed. A systemwide installed version of klibc
499 should be used to build a klibc udev now.
503 NAME="" will not create any nodes, but execute RUN keys. To completely
504 ignore an event the OPTION "ignore_device" should be used.
506 After removal of the reorder queue, events with a TIMEOUT can be executed
507 without any queuing now.
511 Fixed bug in udevd, if inotify is not available. We depend on netlink
512 uevents now, kernels without that event source will not work with that
513 version of udev anymore.
517 The rule parsing happens now in the daemon once at startup, all udev
518 event processes inherit the already parsed rules from the daemon.
519 It is shipped with SUSE10.0 and reduces heavily the system load at
520 startup. The option to save precompiled rules and let the udev process
521 pick the them up is removed, as it's no longer needed.
523 Kernel 2.6.15 will have symlinks at /class/input pointing to the real
524 device. Libsysfs is changed to "translate" the requested link into the
525 real device path, as it would happen with the hotplug event. Otherwise
526 device removal and the udev database will not work.
528 Using 'make STRIPCMD=' will leave the binaries unstripped for debugging
531 A few improvements for vol_id, the filesytem probing code.
535 Fix a stupid typo in extras/run_directory for "make install".
537 scsi_id creates the temporary devnode now in /dev for usage with a
538 non-writable /tmp directory.
540 The uevent kernel socket buffer can carry app. 50.000 events now,
541 let's see who can break this again. :)
543 The upcoming kernel will have a new input driver core integration.
544 Some class devices are now symlinks to the real device. libsysfs
545 needs a fix for this to work correctly. Udevstart of older udev
546 versions will _not_ create these devices!
550 Fix a 'install' target in the Makefile, that prevents EXTRAS from
555 A bunch of mostly trivial bugfixes. From now on no node name or
556 symlink name can contain any character than plain whitelisted ascii
557 characters or validated utf8 byte-streams. This is needed for the
558 /dev/disk/by-label/* links, because we import untrusted data and
559 export it to the filesystem.
563 More bugfixes. If udevd was started from the kernel, we don't
564 have stdin/stdout/stderr, which broke the forked tools in some
569 Bugfix. udevstart event ordering was broken for a long time.
570 The new run_program() uncovered it, because /dev/null was not
571 available while we try to run external programs.
572 Now udevstart should create it before we run anything.
576 Minor bugfixes and some distro rules updates. If you don't have the
577 persistent disk rules in /dev/disk/by-*/* on your distro, just
578 grab it from here. :)
582 We can use socket communication now to pass events from udev to
584 RUN+="socket:/org/freedesktop/hal/udev_event"
585 will pass the whole udev event to the HAL daemon without the need
586 for a forked helper. (See ChangeLog for udevmonitor, as an example)
590 Mostly bugfixes and see ChangeLog.
592 The test for the existence of an environment value should be
594 ENV{KEY}=="*" to ENV{KEY}=="?*"
595 because "*" will not fail anymore, if the key does not exist or
600 Bugfixes and a few tweaks described in the ChangeLog.
604 Mostly a Bugfix release.
606 Added WAIT_FOR_SYSFS="<attribute>" to be able to fight against the sysfs
607 timing with custom rules.
611 We changed the internal rule storage format. Our large rule files took
612 2 MB of RAM, with the change we are down to 99kB.
614 If the device-node has been created with default name and no symlink or
615 options are to remenber, it is not longer stored in the udevdb. HAL will
616 need to be updated to work correctly with that change.
618 To overrride optimization flags, OPTFLAGS may be used now.
626 Major changes happened with this release. The goal is to take over the
627 complete kernel-event handling and provide a more efficient way to dispatch
628 kernel events. Replacing most of the current shell script logic and the
629 kernel forked helper with a netlink-daemon and a rule-based event handling.
631 o udevd listens to netlink events now. The first valid netlink event
632 will make udevd ignore any message from udevsend that contains a
633 SEQNUM, to avoid duplicate events. The forked events can be disabled
635 echo "" > /proc/sys/kernel/hotplug
636 For full support, the broken input-subsytem needs to be fixed, not to
637 bypass the driver core.
639 o /etc/dev.d/ + /etc/hotplug.d/ directory multiplexing is completely
640 removed from udev itself and must be emulated by calling small
641 helper binaries provided in the extras folder:
642 make EXTRAS=extras/run_directory/
643 will build udev_run_devd and udev_run_hotplugd, which can be called
644 from a rule if needed:
645 RUN+="/sbin/udev_run_hotplugd"
646 The recommended way to handle this is to convert all the calls from
647 the directories to explicit udev rules and get completely rid of the
648 multiplexing. (To catch a ttyUSB event, you now no longer need to
649 fork and exit 300 tty script instances you are not interested in, it
650 is just one rule that matches exactly the device.)
652 o udev handles now _all_ events not just events for class and block
653 devices, this way it is possible to control the complete event
654 behavior with udev rules. Especially useful for rules like:
655 ACTION="add", DEVPATH="/devices/*", MODALIAS=="?*", RUN+="/sbin/modprobe $modalias"
657 o As used in the modalias rule, udev supports now textual
658 substitution placeholder along with the usual format chars. This
659 needs to be documented, for now it's only visible in udev_rules_parse.c.
661 o The rule keys support now more operations. This is documented in the
662 man page. It is possible to add values to list-keys like the SYMLINK
663 and RUN list with KEY+="value" and to clear the list by assigning KEY="".
664 Also "final"-assignments are supported by using KEY:="value", which will
665 prevent changing the key by any later rule.
667 o kernel 2.6.12 has the "detached_state" attribute removed from
668 sysfs, which was used to recognize sysfs population. We switched that
669 to wait for the "bus" link, which is only available in kernels after 2.6.11.
670 Running this udev version on older kernels may cause a short delay for
673 o To provide infrastructure for persistent device naming, the id programs:
674 scsi_id, vol_id (former udev_volume_id), and ata_id (new) are able now
675 to export the probed data in environment key format:
676 pim:~ # /sbin/ata_id --export /dev/hda
677 ID_MODEL=HTS726060M9AT00
678 ID_SERIAL=MRH401M4G6UM9B
682 KERNEL="hd*[!0-9]", IMPORT="/sbin/ata_id --export $tempnode"
683 KERNEL="hd*[!0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_MODEL}_$env{ID_SERIAL}"
686 kay@pim:~> tree /dev/disk
689 | |-- HTS726060M9AT00_MRH401M4G6UM9B -> ../../hda
690 | `-- IBM-Memory_Key -> ../../sda
692 | |-- swap -> ../../hda1
693 | |-- date -> ../../sda1
694 | `-- home -> ../../hda3
696 |-- 2E08712B0870F2E7 -> ../../hda3
697 |-- 9352cfef-7687-47bc-a2a3-34cf136f72e1 -> ../../hda1
698 |-- E845-7A89 -> ../../sda1
699 `-- b2a61681-3812-4f13-a4ff-920d70604299 -> ../../hda2
701 The IMPORT= operation will import these keys in the environment and make
702 it available for later PROGRAM= and RUN= executed programs. The keys are
703 also stored in the udevdb and can be queried from there with one of the
706 o A few binaries are silently added to the repository, which can be used
707 to replay kernel events from initramfs instead of using coldplug. udevd
708 can be instructed now to queue-up events while the stored events from
709 initramfs are filled into the udevd-queue. This code is still under
710 development and there is no documentation now besides the code itself.
711 The additional binaries get compiled, but are not installed by default.
713 o There is also a temporary fix for a performance problem where too many
714 events happen in parallel and every event needs to parse the rules.
715 udev can now read precompiled rules stored on disk. This is likely to be
716 replaced by a more elegant solution in a future udev version.
720 With kernel version 2.6.12, the sysfs file "detached_state" was removed.
721 Fix for libsysfs not to expect this file was added.
725 All rules are applied now, but only the first matching rule with a NAME-key
726 will be applied. All later rules with NAME-key are completely ignored. This
727 way system supplied symlinks or permissions gets applied to user-defined
731 Please check your rules setup, if you may need to add OPTIONS="last_rule"
732 to some rules, to keep the old behavior.
734 The rules are read on "remove"-events too. That makes is possible to match
735 with keys that are available on remove (KERNEL, SUBSYSTEM, ID, ENV, ...) to
736 instruct udev to ignore an event (OPTIONS="ignore_device").
737 The new ACTION-key may be used to let a rule act only at a "remove"-event.
739 The new RUN-key supports rule-based execution of programs after device-node
740 handling. This is meant as a general replacement for the dev.d/-directories
741 to give fine grained control over the execution of programs.
743 The %s{}-sysfs format char replacement values are searched at any of the
744 devices in the device chain now, not only at the class-device.
746 We support log priority levels now. The value udev_log in udev.conf is used
747 to determine what is printed to syslog. This makes it possible to
748 run a version with compiled-in debug messages in a production environment
749 which is sometimes needed to find a bug.
750 It is still possible to supress the inclusion of _any_ syslog usage with
751 USE_LOG=false to create the smallest possible binaries if needed.
752 The configured udev_log value can be overridden with the environment variable
757 Possible use of a system-wide klibc:
758 make USE_KLIBC=true KLCC=/usr/bin/klcc all
759 will link against an external klibc and our own version will be ignored.
763 We support an unlimited count of symlinks now.
765 If USE_STATIC=true is passed to a glibc build, we link statically and use
766 a built-in userdb parser to resolve user and group names.
768 The PLACE= key is gone. It can be replaced by an ID= for a long time, because
769 we walk up the chain of physical devices to find a match.
771 The KEY="<value>" format supports '=', '==', '!=,' , '+=' now. This makes it
772 easy to skip certain attribute matches without composing rules with weird
773 character class negations like:
774 KERNEL="[!s][!c][!d]*"
775 this can now be replaced with:
777 The current simple '=' is still supported, and should work as it does today,
778 but existing rules should be converted if possible, to be better readable.
780 We have new ENV{}== key now, to match against a maximum of 5 environment
783 udevstart is its own binary again, because we don't need co carry this araound
784 with every forked event.