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Commit | Line | Data |
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705e1c7f KS |
1 | udev 138 |
2 | ======== | |
3 | ||
87702fa0 KS |
4 | udev 137 |
5 | ======== | |
6 | Bugfixes. | |
7 | ||
8 | The udevadm test command has no longer a --force option, nodes and symlinks | |
9 | are always updated with a test run now. | |
10 | ||
5f03ed8a | 11 | The udevd daemon can be started with --resolve-names=never to avoid all user |
9032f119 SJR |
12 | and group lookups (e.g. in cut-down systems) or --resolve-names=late to |
13 | lookup user and groups every time events are handled. | |
5f03ed8a | 14 | |
3e18fb06 KS |
15 | udev 136 |
16 | ======== | |
17 | Bugfixes. | |
18 | ||
1aa8fdf7 | 19 | We are currently merging the Ubuntu rules in the udev default rules, |
67c89548 | 20 | and get one step closer to provide a common Linux /dev setup, regarding |
1aa8fdf7 | 21 | device names, symlinks, and default device permissions. On udev startup, |
67c89548 | 22 | we now expect the following groups to be resolvable to their ids with |
1aa8fdf7 KS |
23 | glibc's getgrnam(): |
24 | disk, cdrom, floppy, tape, audio, video, lp, tty, dialout, kmem. | |
67c89548 KS |
25 | LDAP setups need to make sure, that these groups are always resolvable at |
26 | bootup, with only the rootfs mounted, and without network access available. | |
27 | ||
28 | Some systems may need to add some new, currently not used groups, or need | |
29 | to add some users to new groups, but the cost of this change is minimal, | |
30 | compared to the pain the current, rather random, differences between the | |
31 | various distributions cause for upstream projects and third-party vendors. | |
32 | ||
33 | In general, "normal" users who log into a machine should never be a member | |
34 | of any such group, but the device-access should be managed by dynamic ACLs, | |
35 | which get added and removed for the specific users on login/logout and | |
36 | session activity/inactivity. These groups are only provided for custom setups, | |
37 | and mainly system services, to allow proper privilege separation. | |
38 | A video-streaming daemon uid would be a member of "audio" and "video", to get | |
31a73307 KS |
39 | access to the sound and video devices, but no "normal" user should ever belong |
40 | to the "audio" group, because he could listen to the built-in microphone with | |
67c89548 | 41 | any ssh-session established from the other side of the world. |
8553cf06 | 42 | |
d4e0db3c KS |
43 | /dev/serial/by-{id,path}/ now contains links for ttyUSB devices, |
44 | which do not depend on the kernel device name. As usual, unique | |
45 | devices - only a single one per product connected, or a real | |
46 | USB serial number in the device - are always found with the same | |
47 | name in the by-id/ directory. | |
5fadcc76 | 48 | Completely identical devices may overwrite their names in by-id/ |
d4e0db3c KS |
49 | and can only be found reliably in the by-path/ directory. Devices |
50 | specified by by-path/ must not change their connection, like the | |
51 | USB port number they are plugged in, to keep their name. | |
52 | ||
67c89548 KS |
53 | To support some advanced features, Linux 2.6.22 is the oldest supported |
54 | version now. The kernel config with enabled SYSFS_DEPRECATED is no longer | |
55 | supported. Older kernels should still work, and devices nodes should be | |
56 | reliably created, but some rules and libudev will not work correctly because | |
57 | the old kernels do not provide the expected information or interfaces. | |
58 | ||
ae0f55cb KS |
59 | udev 135 |
60 | ======== | |
61 | Bugfixes. | |
62 | ||
63 | Fix for a possible segfault while swapping network interface names in udev | |
64 | versions 131-134. | |
65 | ||
44993482 KS |
66 | udev 134 |
67 | ======== | |
6733f601 KS |
68 | Bugfixes. |
69 | ||
70 | The group "video" is part of the default rules now. | |
44993482 | 71 | |
fc0d4bd4 KS |
72 | udev 133 |
73 | ======== | |
d78c0b3a KS |
74 | Bugfix for kernels using SYSFS_DEPRECATED* option and finding parent |
75 | block devices in some cases. No common distro uses this option anymore, | |
76 | and we do not get enough testing for this and recent udev versions. If | |
77 | this option is not needed to run some old distro with a new kernel, | |
78 | it should be disabled in the kernel config. | |
79 | ||
80 | Bugfix for the $links substitution variable, which may crash if no links | |
81 | are created. This should not happen in usual setups because we always | |
82 | create /dev/{block,char}/ links. | |
fc0d4bd4 KS |
83 | |
84 | The strings of the parsed rules, which are kept in memory, no longer | |
d78c0b3a KS |
85 | contain duplicate entries, or duplicate tails of strings. This, and the |
86 | new rules parsing/matching code reduces the total in-memory size of | |
87 | a huge distro rule sets to 0.08 MB, compared to the 1.2MB of udev | |
88 | version 130. | |
fc0d4bd4 KS |
89 | |
90 | The export of DEVTYPE=disk/partition got removed from the default | |
d78c0b3a KS |
91 | rules. This value is available from the kernel. The pnp shell script |
92 | modprobe hack is removed from the default rules. ACPI devices have _proper_ | |
93 | modalias support and take care of the same functionality. | |
fc0d4bd4 | 94 | Installations which support old kernels, but install current default |
4dfe61c9 | 95 | udev rules may want to add that to the compat rules file. |
fc0d4bd4 | 96 | |
510af2e9 | 97 | Libvolume_id now always probes for all known filesystems, and does not |
4dfe61c9 KS |
98 | stop at the first match. Some filesystems are marked as "exclusive probe", |
99 | and if any other filesytem type matches at the same time, libvolume_id | |
d78c0b3a KS |
100 | will, by default, not return any probing result. This is intended to prevent |
101 | mis-detection with conflicting left-over signatures found from earlier | |
102 | file system formats. That way, we no longer depend on the probe-order | |
103 | in case of multiple competing signatures. In some setups the kernel allows | |
104 | to mount a volume with just the old filesystem signature still in place. | |
105 | This may damage the new filesystem and cause data-loss, just by mounting | |
106 | it. Because volume_id can not decide which one the correct signature is, | |
107 | the wrong signatures need to be removed manually from the volume, or the | |
108 | volume needs to be reformatted, to enable filesystem detection and possible | |
109 | auto-mounting. | |
510af2e9 | 110 | |
bfa9938c KS |
111 | udev 132 |
112 | ======== | |
bfa9938c KS |
113 | Fix segfault if compiled without optimization and dbg() does not get |
114 | compiled out and uses variables which are not available. | |
115 | ||
2d9a1b1e KS |
116 | udev 131 |
117 | ======== | |
acae628f | 118 | Bugfixes. (And maybe new bugs. :)) |
65807d09 KS |
119 | |
120 | The rule matching engine got converted from a rule list to a token | |
121 | array which reduced the in-memory rules representation of a full | |
acae628f KS |
122 | featured distros with thousends of udev rules from 1.2MB to 0.12 MB. |
123 | Limits like 5 ENV and ATTR matches, and one single instance for most | |
124 | other keys per rule are gone. | |
65807d09 KS |
125 | |
126 | The NAME assignment is no longer special cased. If later rules assign | |
127 | a NAME value again, the former value will be overwritten. As usual | |
128 | for most other keys, the NAME value can be protected by doing a final | |
129 | assignment with NAME:="<value>". | |
130 | ||
acae628f KS |
131 | All udev code now uses libudev, which is also exported. The library |
132 | is still under development, marked as experimental, and its interface | |
133 | may change as long as the DeviceKit integration is not finished. | |
134 | ||
135 | Many thanks to Alan Jenkins for his continuous help, and finding and | |
136 | optimizing some of the computing expensive parts. | |
2d9a1b1e | 137 | |
22c89d3f KS |
138 | udev 130 |
139 | ======== | |
140 | Bugfixes. | |
141 | ||
ec06a8dd KS |
142 | Kernel devices and device nodes are connected now by reverse indizes in |
143 | /sys and /dev. A device number retrieved by a stat() or similar, the | |
144 | kernel device directory can be found by looking up: | |
145 | /sys/dev/{block,char}/<maj>:<min> | |
146 | and the device node of the same device by looking up: | |
147 | /dev/{block,char}/<maj>:<min> | |
148 | ||
f5001d24 KS |
149 | udev 129 |
150 | ======== | |
714131f1 KS |
151 | Fix recently introduced bug, which caused a compilation without large |
152 | file support, where vol_id does not recognize raid signatures at the end | |
153 | of a volume. | |
154 | ||
155 | Firewire disks now create both, by-id/scsi-* and by-id/ieee-* links. | |
156 | Seems some kernel versions prevent the creation of the ieee-* links, | |
157 | so people used the scsi-* link which disappeared now. | |
158 | ||
159 | More libudev work. Almost all udevadm functionality comes from libudev | |
f5001d24 KS |
160 | now. |
161 | ||
d41b956e | 162 | udevadm trigger has a new option --type, which allows to trigger events |
8249e04e | 163 | for "devices", for "subsystems", or "failed" devices. The old option |
d41b956e KS |
164 | --retry-failed" still works, but is no longer mentioned in the man page. |
165 | ||
2b725651 KS |
166 | udev 128 |
167 | ======== | |
168 | Bugfixes. | |
169 | ||
170 | The udevadm info --device-id-of-file= output has changed to use | |
171 | the obvious format. Possible current users should use the --export | |
172 | option which is not affected. | |
173 | ||
55eb845c KS |
174 | The old udev commands symlinks to udevadm are not installed, if |
175 | these symlinks are used, a warning is printed. | |
e4255f11 | 176 | |
33a5cc29 KS |
177 | udev 127 |
178 | ======== | |
179 | Bugfixes. | |
180 | ||
41ff8053 KS |
181 | Optical drive's media is no longer probed for raid signatures, |
182 | reading the end of the device causes some devices to malfunction. | |
183 | Also the offset of the last session found is used now to probe | |
184 | for the filesystem. | |
a689165b KS |
185 | |
186 | The volume_id library got a major version number update to 1, | |
187 | some deprecated functions are removed. | |
188 | ||
41ff8053 | 189 | A shared library "libudev" gets installed now to provide access |
a689165b KS |
190 | to udev device information. DeviceKit, the successor of HAL, will |
191 | need this library to access the udev database and search sysfs for | |
192 | devices. | |
ba6929f6 | 193 | The library is currently in an experimental state, also the API is |
a689165b | 194 | expected to change, as long as the DeviceKit integration is not |
ba6929f6 KS |
195 | finished. |
196 | ||
01618658 KS |
197 | udev 126 |
198 | ======== | |
199 | We use ./configure now. See INSTALL for details. Current | |
200 | options are: | |
201 | --prefix= | |
202 | "/usr" - prefix for man pages, include files | |
203 | --exec-prefix= | |
204 | "" - the root filesystem, prefix for libs and binaries | |
205 | --sysconfdir= | |
206 | "/etc" | |
207 | --with-libdir-name= | |
208 | "lib" - directory name for libraries, not a path name | |
209 | multilib 64bit systems may use "lib64" instead of "lib" | |
210 | --enable-debug | |
211 | compile-in verbose debug messages | |
212 | --disable-logging | |
213 | disable all logging and compile-out all log strings | |
47b0c350 | 214 | --with-selinux |
58a63088 | 215 | link against SELInux libraries, to set the expected context |
01618658 KS |
216 | for created files |
217 | ||
58a63088 KS |
218 | In the default rules, the group "disk" gets permissions 0660 instead |
219 | of 0640. One small step closer to unify distro rules. Some day, all | |
220 | distros hopefully end up with the same set of rules. | |
221 | ||
222 | No symlinks to udevadm are installed anymore, if they are still needed, | |
223 | they should be provided by the package. | |
01618658 | 224 | |
05b96400 KS |
225 | udev 125 |
226 | ======== | |
227 | Bugfixes. | |
228 | ||
229 | Default udev rules, which are not supposed to be edited by the user, should | |
230 | be placed in /lib/udev/rules.d/ now, to make it clear that they are private to | |
231 | the udev package and will be replaced with an update. Udev will pick up rule | |
232 | files from: | |
233 | /lib/udev/rules.d/ - default installed rules | |
234 | /etc/udev/rules.d/ - user rules + on-the-fly generated rules | |
235 | /dev/.udev/rules.d/ - temporary non-persistent rules created after bootup | |
236 | It does not matter in which directory a rule file lives, all files are sorted | |
237 | in lexical order. | |
238 | ||
239 | To help creating /dev/root, we have now: | |
240 | $ udevadm info --export --export-prefix="ROOT_" --device-id-of-file=/ | |
241 | ROOT_MAJOR=8 | |
242 | ROOT_MINOR=5 | |
243 | In case the current --device-id-of-file is already used, please switch to | |
244 | the --export format version, it saves the output parsing and the old | |
245 | format will be changed to use ':' as a separator, like the format in the | |
246 | sysfs 'dev' file. | |
247 | ||
c986ca55 KS |
248 | udev 124 |
249 | ======== | |
250 | Fix cdrom_id to properly recognize blank media. | |
251 | ||
2c0644c1 KS |
252 | udev 123 |
253 | ======== | |
254 | Bugfixes. | |
255 | ||
256 | Tape drive id-data is queried from /dev/bsg/* instead of the tape | |
257 | nodes. This avoids rewinding tapes on open(). | |
258 | ||
4e548559 KS |
259 | udev 122 |
260 | ======== | |
261 | Bugfixes. | |
262 | ||
263 | The symlinks udevcontrol and udevtrigger are no longer installed by | |
264 | the Makefile. | |
265 | ||
266 | The scsi_id program does not depend on sysfs anymore. It can speak | |
267 | SGv4 now, so /dev/bsg/* device nodes can be used, to query SCSI device | |
268 | data, which should solve some old problems with tape devices, where | |
269 | we better do not open all tape device nodes to identify the device. | |
270 | ||
8325c84d KS |
271 | udev 121 |
272 | ======== | |
273 | Many bugfixes. | |
274 | ||
275 | The cdrom_id program is replaced by an advanced version, which can | |
276 | detect most common device types, and also properties of the inserted | |
277 | media. This is part of moving some basic functionality from HAL into | |
278 | udev (and the kernel). | |
279 | ||
cb0b4b70 KS |
280 | udev 120 |
281 | ======== | |
282 | Bugfixes. | |
283 | ||
284 | The last WAIT_FOR_SYSFS rule is removed from the default rules. | |
285 | ||
286 | The symlinks to udevadm for the debugging tools: udevmonitor and | |
287 | udevtest are no longer created. | |
288 | ||
289 | The symlinks to the udevadm man page for the old tool names are | |
290 | no longer created. | |
291 | ||
292 | Abstract namespace sockets paths in RUN+="socket:@<path>" rules, | |
293 | should be prefixed with '@' to indicate that the path is not a | |
294 | real file. | |
295 | ||
65e9e8c5 KS |
296 | udev 119 |
297 | ======== | |
298 | Bugfixes. | |
299 | ||
c645b98b KS |
300 | udev 118 |
301 | ======== | |
7094df0a KS |
302 | Bugfixes. |
303 | ||
304 | Udevstart is removed from the tree, it did not get installed for | |
305 | a long time now, and is long replaced by trigger and settle. | |
c645b98b | 306 | |
225cb03b KS |
307 | udev 117 |
308 | ======== | |
309 | Bugfixes. | |
310 | ||
3ca49451 KS |
311 | All udev tools are merged into a single binary called udevadm. |
312 | The old names of the tools are built-in commands in udevadm now. | |
313 | Symlinks to udevadm, with the names of the old tools, provide | |
314 | the same functionality as the standalone tools. There is also | |
315 | only a single udevadm.8 man page left for all tools. | |
316 | ||
317 | Tools like mkinitramfs should be checked, if they need to include | |
318 | udevadm in the list of files. | |
225cb03b | 319 | |
8e37efe4 KS |
320 | udev 116 |
321 | ======== | |
322 | Bugfixes. | |
323 | ||
7e599863 KS |
324 | udev 115 |
325 | ======== | |
326 | Bugfixes. | |
327 | ||
328 | The etc/udev/rules.d/ directory now contains a default set of basic | |
329 | udev rules. This initial version is the result of a rules file merge | |
330 | of Fedora and openSUSE. For these both distros only a few specific | |
331 | rules are left in their own file, named after the distro. Rules which | |
332 | are optionally installed, because they are only valid for a specific | |
333 | architecture, or rules for subsystems which are not always used are | |
334 | in etc/udev/packages/. | |
335 | ||
585e8388 KS |
336 | udev 114 |
337 | ======== | |
338 | Bugfixes. | |
339 | ||
340 | Dynamic rules can be created in /dev/.udev/rules.d/ to trigger | |
341 | actions by dynamically created rules. | |
342 | ||
343 | SYMLINK=="<value>" matches agains the entries in the list of | |
344 | currently defined symlinks. The links are not created in the | |
345 | filesystem at that point in time, but the values can be matched. | |
346 | ||
347 | RUN{ignore_error}+="<program>" will ignore any exit code from the | |
348 | program and not record as a failed event. | |
349 | ||
de966524 KS |
350 | udev 113 |
351 | ======== | |
352 | Bugfixes. | |
353 | ||
354 | Final merge of patches/features from the Ubuntu package. | |
355 | ||
83a4c0f8 KS |
356 | udev 112 |
357 | ======== | |
358 | Bugfixes. | |
359 | ||
360 | Control characters in filesystem label strings are no longer silenty | |
361 | removed, but hex-encoded, to be able to uniquely identify the device | |
362 | by its symlink in /dev/disk/by-label/. | |
363 | If libvolume_id is used by mount(8), LABEL= will work as expected, | |
364 | if slashes or other characters are used in the label string. | |
365 | ||
366 | To test the existence of a file, TEST=="<file>" and TEST!="<file>" | |
367 | can be specified now. The TEST key accepts an optional mode mask | |
368 | TEST{0100}=="<is executable file>". | |
369 | ||
370 | Scsi_id now supports a mode without expecting scsi-specific sysfs | |
371 | entries to allow the extraction of cciss-device persistent properties. | |
372 | ||
85135c74 KS |
373 | udev 111 |
374 | ======== | |
375 | Bugfixes. | |
376 | ||
377 | In the future, we may see uuid's which are just simple character | |
378 | strings (see the DDF Raid Specification). For that reason vol_id now | |
83a4c0f8 | 379 | exports ID_FS_UUID_SAFE, just like ID_FS_LABEL_SAFE. For things like |
85135c74 KS |
380 | the creation of symlinks, the *_SAFE values ensure, that no control |
381 | or whitespace characters are used in the filename. | |
382 | ||
383 | Possible users of libvolume_id, please use the volume_id_get_* functions. | |
384 | The public struct will go away in a future release of the library. | |
385 | ||
25b5bb42 KS |
386 | udev 110 |
387 | ======== | |
388 | Bugfixes. | |
389 | ||
390 | Removal of useless extras/eventrecorder.sh. | |
391 | ||
7c1ecbfb KS |
392 | udev 109 |
393 | ======== | |
394 | Bugfixes. | |
395 | ||
b8eb7940 KS |
396 | udev 108 |
397 | ======== | |
398 | Bugfixes. | |
399 | ||
400 | The directory multiplexer for dev.d/ and hotplug.d are finally removed | |
401 | from the udev package. | |
402 | ||
9d534c0e KS |
403 | udev 107 |
404 | ======== | |
405 | Bugfixes. | |
406 | ||
407 | Symlinks can have priorities now, the priority is assigned to the device | |
408 | and specified with OPTIONS="link_priority=100". Devices with higher | |
409 | priorities overwrite the symlinks of devices with lower priorities. | |
410 | If the device that currently owns the link, goes away, the symlink | |
411 | will be removed, and recreated, pointing to the next device with the | |
412 | highest actual priority. This should make /dev/disk/by-{label,uuid,id} | |
413 | more reliable, if multiple devices contain the same metadata and overwrite | |
414 | these symlinks. | |
415 | ||
416 | The dasd_id program is removed from the udev tree, and dasdinfo, with the | |
417 | needed rules, are part of the s390-tools now. | |
418 | ||
419 | Please add KERNEL=="[0-9]*:[0-9]*" to the scsi wait-for-sysfs rule, | |
420 | we may get the scsi sysfs mess fixed some day, and this will only catch | |
421 | the devices we are looking for. | |
422 | ||
423 | USB serial numbers for storage devices have the target:lun now appended, | |
424 | to make it possibble to distinguish broken multi-lun devices with all | |
425 | the same SCSI identifiers. | |
426 | ||
427 | Note: The extra "run_directory" which searches and executes stuff in | |
428 | /etc/hotplug.d/ and /etc/dev.d/ is long deprecated, and will be removed | |
429 | with the next release. Make sure, that you don't use it anymore, or | |
430 | provides your own implementation of that inefficient stuff. | |
431 | We are tired of reports about a "slow udev", because these directories | |
432 | contain stuff, that runs with _every_ event, instead of using rules, | |
433 | that run programs only for the matching events. | |
434 | ||
435 | udev 106 | |
436 | ======== | |
437 | Bugfixes. | |
438 | ||
273bebdb KS |
439 | udev 105 |
440 | ======== | |
1bcfb137 KS |
441 | Bugfixes. |
442 | ||
443 | DRIVER== will match only for devices that actually have a real | |
444 | driver. DRIVERS== must be used, if parent devices should be | |
445 | included in the match. | |
446 | ||
447 | Libvolume_id's "linux_raid" detection needed another fix. | |
273bebdb | 448 | |
8fdad27d KS |
449 | udev 104 |
450 | ======== | |
451 | Bugfixes. | |
452 | ||
1810a9d7 KS |
453 | udev 103 |
454 | ======== | |
455 | Add additional check to volume_id detection of via_raid, cause | |
456 | some company decided to put a matching pattern all over the empty | |
457 | storage area of their music players. | |
458 | ||
0a9e36df KS |
459 | udev 102 |
460 | ======== | |
461 | Fix path_id for SAS devices. | |
462 | ||
9b2a9038 KS |
463 | udev 101 |
464 | ======== | |
465 | The udev daemon can be started with --debug-trace now, which will | |
466 | execute all events serialized to get a chance to catch a possible | |
467 | action that crashes the box. | |
468 | ||
469 | A warning is logged, if PHYSDEV* keys, the "device" link, or a parent | |
470 | device attribute like $attr{../file} is used, only WAIT_FOR_SYSFS rules | |
471 | are excluded from the warning. Referencing parent attributes directly | |
472 | may break when something in the kernel driver model changes. Udev will | |
473 | just find the attribute by walking up the parent chain. | |
474 | ||
475 | Udevtrigger now sorts the list of devices depending on the device | |
476 | dependency, so a "usb" device is triggered after the parent "pci" | |
477 | device. | |
478 | ||
eed8b2ff KS |
479 | udev 100 |
480 | ======== | |
481 | Revert persistent-storage ata-serial '_' '-' replacement. | |
482 | ||
4a515309 KS |
483 | udev 099 |
484 | ======== | |
485 | Bugfixes. | |
486 | ||
487 | Udevtrigger can now filter the list of devices to be triggered. Matches | |
488 | for subsystems or sysfs attributes can be specified. | |
489 | ||
490 | The entries in /dev/.udev/queue and /dev/.udev/failed have changed to | |
491 | zero-sized files to avoid pointing to /sys and confuse broken tools which | |
492 | scan the /dev directory. To retry failed events, udevtrigger --retry-failed | |
493 | should be used now. | |
494 | ||
495 | The rules and scripts to create udev rules for persistent network | |
496 | devices and optical drives are in the extras/rules_generator directory | |
497 | now. If you use something similar, please consider replacing your own | |
498 | version with this, to share the support effort. The rule_generator | |
499 | installs its own rules into /etc/udev/rules.d. | |
500 | ||
501 | The cdrom_id tool installs its own rule now in /etc/udev/rules.d, cause | |
502 | the rule_generator depends on cdrom_id to be called in an earlier rule. | |
503 | ||
56f914e6 KS |
504 | udev 098 |
505 | ======== | |
506 | Bugfixes. | |
507 | ||
508 | Renaming of some key names (the old names still work): | |
509 | BUS -> SUBSYSTEMS, ID -> KERNELS, SYSFS -> ATTRS, DRIVER -> DRIVERS. | |
510 | (The behavior of the key DRIVER will change soon in one of the next | |
511 | releases, to match only the event device, please switch to DRIVERS | |
512 | instead. If DRIVER is used, it will behave like DRIVERS, but an error | |
513 | is logged. | |
514 | With the new key names, we have a more consistent and simpler scheme. | |
515 | We can match the properties of the event device only, with: KERNEL, | |
516 | SUBSYSTEM, ATTR, DRIVER. Or include all the parent devices in the match, | |
517 | with: KERNELS, SUBSYSTEMS, ATTRS, DRIVERS. ID, BUS, SYSFS, DRIVER are no | |
518 | longer mentioned in the man page and should be switched in the rule | |
519 | files. | |
520 | ||
521 | ATTR{file}="value" can be used now, to write to a sysfs file of the | |
522 | event device. Instead of: | |
523 | ..., SYSFS{type}=="0|7|14", RUN+="/bin/sh -c 'echo 60 > /sys$$DEVPATH/timeout'" | |
524 | we now can do: | |
525 | ..., ATTR{type}=="0|7|14", ATTR{timeout}="60" | |
526 | ||
527 | All the PHYSDEV* keys are deprecated and will be removed from a | |
528 | future kernel: | |
529 | PHYDEVPATH - is the path of a parent device and should not be | |
530 | needed at all. | |
531 | PHYSDEVBUS - is just a SUBSYSTEM value of a parent, and can be | |
532 | matched with SUBSYSTEMS== | |
533 | PHYSDEVDRIVER - for bus devices it is available as ENV{DRIVER}. | |
534 | Newer kernels will have DRIVER in the environment, | |
535 | for older kernels udev puts in. Class device will | |
536 | no longer carry this property of a parent and | |
537 | DRIVERS== can be used to match such a parent value. | |
538 | Note that ENV{DRIVER} is only available for a few bus devices, where | |
539 | the driver is already bound at device event time. On coldplug, the | |
540 | events for a lot devices are already bound to a driver, and they will have | |
541 | that value set. But on hotplug, at the time the kernel creates the device, | |
542 | it can't know what driver may claim the device after that, therefore | |
543 | in most cases it will be empty. | |
544 | ||
545 | Failed events should now be re-triggered with: | |
546 | udevtrigger --retry-failed. | |
547 | Please switch to this command, so we keep the details of the /dev/.udev/failed/ | |
548 | files private to the udev tools. We may need to switch the current symlink | |
549 | target, cause some obviously broken tools try to scan all files in /dev | |
550 | including /dev/.udev/, find the links to /sys and end up stat()'ing sysfs files | |
551 | million times. This takes ages on slow boxes. | |
552 | ||
553 | The udevinfo attribute walk (-a) now works with giving a device node | |
554 | name (-n) instead of a devpath (-p). The query now always works, also when | |
555 | no database file was created by udev. | |
556 | ||
557 | The built-in /etc/passwd /etc/group parser is removed, we always depend on | |
558 | getpwnam() and getgrnam() now. One of the next releases will depend on | |
559 | fnmatch() and may use getopt_long(). | |
560 | ||
be31371f KS |
561 | udev 097 |
562 | ======== | |
563 | Bugfixes and small improvements. | |
564 | ||
8448b7ce KS |
565 | udev 096 |
566 | ======== | |
be31371f | 567 | Fix path_id for recent kernels. |
8448b7ce | 568 | |
486e62f8 KS |
569 | udev 095 |
570 | ======== | |
56f914e6 | 571 | %e is finally gone. |
486e62f8 KS |
572 | |
573 | Added support for swapping network interface names, by temporarily | |
574 | renaming the device and wait for the target name to become free. | |
575 | ||
a924bf9a KS |
576 | udev 094 |
577 | ======== | |
578 | The built-in MODALIAS key and substitution is removed. | |
579 | ||
df16b779 KS |
580 | udev 093 |
581 | ======== | |
582 | The binary firmware helper is replaced by the usual simple | |
583 | shell script. Udevsend is removed from the tree. | |
584 | ||
acc8322f KS |
585 | udev 092 |
586 | ======== | |
587 | Bugfix release. | |
588 | ||
866bfe88 KS |
589 | udev 091 |
590 | ======== | |
591 | Some more keys require the correct use of '==' and '=' depending | |
592 | on the kind of operation beeing an assignment or a match. Rules | |
593 | with invalid operations are skipped and logged to syslog. Please | |
594 | test with udevtest if the parsing of your rules throws errors and | |
595 | fix possibly broken rules. | |
596 | ||
876fa61d KS |
597 | udev 090 |
598 | ======== | |
599 | Provide "udevsettle" to wait for all current udev events to finish. | |
600 | It also watches the current kernel netlink queue by comparing the | |
601 | even sequence number to make sure that there are no current pending | |
602 | events that have not already arrived in the daemon. | |
603 | ||
2b3f8e93 KS |
604 | udev 089 |
605 | ======== | |
606 | Fix rule to skip persistent rules for removable IDE devices, which | |
607 | also skipped optical IDE drives. | |
608 | ||
609 | All *_id program are installed in /lib/udev/ by default now. | |
610 | ||
611 | No binary is stripped anymore as this should be done in the | |
612 | packaging process and not at build time. | |
613 | ||
614 | libvolume_id is provided as a shared library now and vol_id is | |
615 | linked against it. Also one of the next HAL versions will require | |
616 | this library, and the HAL build process will also require the | |
617 | header file to be installed. The copy of the same code in HAL will | |
618 | be removed to have only a single copy left on the system. | |
619 | ||
63645a3d KS |
620 | udev 088 |
621 | ======== | |
622 | Add persistent links for SCSI tapes. The rules file is renamed | |
623 | to 60-persistent-storage.rules. | |
624 | ||
625 | Create persistent path for usb devices. Can be used for all sorts | |
626 | of devices that can't be distinguished by other properties like | |
627 | multiple identical keyboards and mice connected to the same box. | |
628 | ||
629 | Provide "udevtrigger" program to request events on coldplug. The | |
630 | shell script is much too slow with thousends of devices. | |
631 | ||
b2885eee KS |
632 | udev 087 |
633 | ======== | |
634 | Fix persistent disk rules to exclude removable IDE drives. | |
635 | ||
636 | Warn if %e, $modalias or MODALIAS is used. | |
637 | ||
638 | udev 086 | |
0030441c KS |
639 | ======== |
640 | Fix queue export, which wasn't correct for subsequent add/remove | |
641 | events for the same device. | |
642 | ||
4cb665e4 KS |
643 | udev 085 |
644 | ======== | |
645 | Fix cramfs detection on big endian. | |
646 | ||
647 | Make WAIT_FOR_SYSFS usable in "normal" rules and silent if the whole | |
648 | device goes away. | |
649 | ||
4942c78c KS |
650 | udev 084 |
651 | ======== | |
66c2bc21 | 652 | If BUS== and SYSFS{}== have been used in the same rule, the sysfs |
b3e8c12b AB |
653 | attributes were only checked at the parent device that matched the |
654 | by BUS requested subsystem. Fix it to also look at the device we | |
66c2bc21 KS |
655 | received the event for. |
656 | ||
657 | Build variable CROSS has changed to CROSS_COMPILE to match the kernel | |
658 | build name. | |
4942c78c | 659 | |
36af2ddc KS |
660 | udev 083 |
661 | ======== | |
662 | Fix a bug where NAME="" would prevent RUN from beeing executed. | |
663 | ||
cef28db9 | 664 | RUN="/bin/program" does not longer automatically add the subsystem |
36af2ddc | 665 | as the first parameter. This is from the days of /sbin/hotplug |
cef28db9 KS |
666 | which is dead now and it's just confusing to need to add a space at |
667 | the end of the program name to prevent this. | |
668 | If you use rules that need the subsystem as the first parameter, | |
669 | like the old "udev_run_hotlugd" and "udev_run_devd", add the subsystem | |
670 | to the key like RUN+="/bin/program $env{SUBSYSTEM}". | |
36af2ddc | 671 | |
1a72d06f KS |
672 | udev 082 |
673 | ======== | |
b3e8c12b | 674 | The udev man page has moved to udev(7) as it does not describe a command |
1a72d06f KS |
675 | anymore. The programs udev, udevstart and udevsend are no longer installed |
676 | by default and must be copied manually, if they should be installed or | |
677 | included in a package. | |
678 | ||
679 | Fix a bug where "ignore_device" could run earlier collected RUN keys before | |
680 | the ignore rule was applied. | |
681 | ||
682 | More preparation for future sysfs changes. usb_id and scsi_id no longer | |
683 | depend on a magic order of devices in the /devices chain. Specific devices | |
684 | should be requested by their subsytem. | |
685 | ||
686 | This will always find the scsi parent device without depending on a specific | |
687 | path position: | |
688 | dev = sysfs_device_get(devpath); | |
689 | dev_usb = sysfs_device_get_parent_with_subsystem(dev, "scsi"); | |
690 | ||
691 | The "device" link in the current sysfs layout will be automatically | |
692 | _resolved_ as a parent and in the new sysfs layout it will just _be_ the | |
693 | parent in the devpath. If a device is requested by it's symlink, like all | |
694 | class devices in the new sysfs layout will look like, it gets automatically | |
695 | resolved and substituted with the real devpath and not the symlink path. | |
696 | ||
697 | Note: | |
698 | A similar logic must be applied to _all_ sysfs users, including | |
699 | scripts, that search along parent devices in sysfs. The explicit use of | |
700 | the "device" link must be avoided. With the future sysfs layout all | |
701 | DEVPATH's will start with /devices/ and have a "subsystem" symlink poiting | |
702 | back to the "class" or the "bus". The layout of the parent devices in | |
703 | /devices is not necessarily expected to be stable across kernel releases and | |
704 | searching for parents by their subsystem should make sysfs users tolerant | |
705 | for changed parent chains. | |
706 | ||
7155bfb7 KS |
707 | udev 081 |
708 | ======== | |
709 | Prepare udev to work with the experimental kernel patch, that moves | |
710 | /sys/class devices to /sys/devices and /sys/block to /sys/class/block. | |
711 | ||
712 | Clarify BUS, ID, $id usage and fix $id behavior. This prepares for | |
713 | moving the class devices to /sys/devices. | |
714 | ||
715 | Thanks again to Marco for help finding a hopefully nice compromise | |
716 | to make %b simpler and working again. | |
717 | ||
3e0f8812 KS |
718 | udev 080 |
719 | ======== | |
1aa1e248 KS |
720 | Complete removal of libsysfs, replaced by simple helper functions |
721 | which are much simpler and a bit faster. The udev daemon operatesentirely | |
722 | on event parameters and does not use sysfs for simple rules anymore. | |
723 | Please report any new bugs/problems, that may be caused by this big | |
724 | change. They will be fixed immediately. | |
725 | ||
3e0f8812 KS |
726 | The enumeration format character '%e' is deprecated and will be |
727 | removed sometimes from a future udev version. It never worked correctly | |
728 | outside of udevstart, so we can't use it with the new parallel | |
729 | coldplug. A simple enumeration is as useless as the devfs naming | |
730 | scheme, just get rid of both if you still use it. | |
731 | ||
732 | MODALIAS and $modalias is not needed and will be removed from one of | |
733 | the next udev versions, replace it in all rules with ENV{MODALIAS} or | |
734 | the sysfs "modalias" value. | |
735 | ||
1aa1e248 KS |
736 | Thanks a lot to Marco for all his help on finding and fixing bugs. |
737 | ||
e2e8e5ce KS |
738 | udev 079 |
739 | ======== | |
740 | Let scsi_id request libata drive serial numbers from page 0x80. | |
741 | ||
742 | Renamed etc/udev/persistent.rules to persistent-disk.rules and | |
743 | added /dev/disk/by-name/* for device mapper device names. | |
744 | ||
745 | Removed %e from the man page. It never worked reliably outside | |
746 | of udevstart and udevstart is no longer recommended to use. | |
747 | ||
fb6e4c28 KS |
748 | udev 078 |
749 | ======== | |
750 | Symlinks are now exported to the event environment. Hopefully it's no | |
751 | longer needed to run udevinfo from an event process, like it was | |
752 | mentioned on the hotplug list: | |
753 | UDEV [1134776873.702967] add@/block/sdb | |
754 | ... | |
755 | DEVNAME=/dev/sdb | |
756 | DEVLINKS=/dev/disk/by-id/usb-IBM_Memory_Key_0218B301030027E8 /dev/disk/by-path/usb-0218B301030027E8:0:0:0 | |
757 | ||
7403f98b KS |
758 | udev 077 |
759 | ======== | |
760 | Fix a problem if udevsend is used as the hotplug handler and tries to use | |
761 | syslog, which causes a "vc" event loop. 2.6.15 will make udevsend obsolete | |
762 | and this kind of problems will hopefully go away soon. | |
763 | ||
c86be870 KS |
764 | udev 076 |
765 | ======== | |
766 | All built-in logic to work around bad sysfs timing is removed with this | |
767 | version. The need to wait for sysfs files is almost fixed with a kernel | |
768 | version that doesn't work with this udev version anyway. Until we fix | |
769 | the timing of the "bus" link creation, the former integrated logic should | |
770 | be emulated by a rule placed before all other rules: | |
771 | ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus" | |
772 | ||
e0dc4f00 KS |
773 | The option "udev_db" does no longer exist. All udev state will be in |
774 | /$udev_root/.udev/ now, there is no longer an option to set this | |
fc55cf68 | 775 | to anything else. |
e0dc4f00 KS |
776 | If the init script or something else used this value, just depend on |
777 | this hardcoded path. But remember _all_content_ of this directory is | |
778 | still private to udev and can change at any time. | |
fc55cf68 | 779 | |
c249f66a KS |
780 | Default location for rule sripts and helper programs is now: /lib/udev/. |
781 | Everything that is not useful on the commandline should go into this | |
e0dc4f00 KS |
782 | directory. Some of the helpers in the extras folder are installed there |
783 | now. The rules need to be changed, to find the helpers there. | |
784 | ||
785 | Also /lib/udev/devices is recommended as a directory where packages or | |
786 | the user can place real device nodes, which get copied over to /dev at | |
787 | every boot. This should replace the various solutions with custom config | |
788 | files. | |
c249f66a | 789 | |
4389ec08 KS |
790 | Udevsend does no longer start the udev daemon. This must be done with |
791 | the init script that prepares /dev on tmpfs and creates the initial nodes, | |
792 | before starting the daemon. | |
793 | ||
a8349b33 KS |
794 | udev 075 |
795 | ======== | |
ef0cd1ac KS |
796 | Silent a too verbose error logging for the old hotplug.d/ dev.d/ |
797 | emulation. | |
798 | ||
a8349b33 | 799 | The copy of klibc is removed. A systemwide installed version of klibc |
ef0cd1ac | 800 | should be used to build a klibc udev now. |
a8349b33 | 801 | |
bc48bbd9 KS |
802 | udev 074 |
803 | ======== | |
804 | NAME="" will not create any nodes, but execute RUN keys. To completely | |
805 | ignore an event the OPTION "ignore_device" should be used. | |
806 | ||
807 | After removal of the reorder queue, events with a TIMEOUT can be executed | |
808 | without any queuing now. | |
809 | ||
8f528042 KS |
810 | udev 073 |
811 | ======== | |
812 | Fixed bug in udevd, if inotify is not available. We depend on netlink | |
813 | uevents now, kernels without that event source will not work with that | |
814 | version of udev anymore. | |
815 | ||
6cb1bbe4 KS |
816 | udev 072 |
817 | ======== | |
818 | The rule parsing happens now in the daemon once at startup, all udev | |
819 | event processes inherit the already parsed rules from the daemon. | |
820 | It is shipped with SUSE10.0 and reduces heavily the system load at | |
1ad45a47 KS |
821 | startup. The option to save precompiled rules and let the udev process |
822 | pick the them up is removed, as it's no longer needed. | |
6cb1bbe4 | 823 | |
ce364175 KS |
824 | Kernel 2.6.15 will have symlinks at /class/input pointing to the real |
825 | device. Libsysfs is changed to "translate" the requested link into the | |
826 | real device path, as it would happen with the hotplug event. Otherwise | |
827 | device removal and the udev database will not work. | |
828 | ||
829 | Using 'make STRIPCMD=' will leave the binaries unstripped for debugging | |
6cb1bbe4 KS |
830 | and packaging. |
831 | ||
832 | A few improvements for vol_id, the filesytem probing code. | |
833 | ||
a743be9a KS |
834 | udev 071 |
835 | ======== | |
836 | Fix a stupid typo in extras/run_directory for "make install". | |
837 | ||
838 | scsi_id creates the temporary devnode now in /dev for usage with a | |
839 | non-writable /tmp directory. | |
840 | ||
841 | The uevent kernel socket buffer can carry app. 50.000 events now, | |
842 | let's see who can break this again. :) | |
843 | ||
844 | The upcoming kernel will have a new input driver core integration. | |
845 | Some class devices are now symlinks to the real device. libsysfs | |
846 | needs a fix for this to work correctly. Udevstart of older udev | |
847 | versions will _not_ create these devices! | |
848 | ||
b0f65295 KS |
849 | udev 070 |
850 | ======== | |
851 | Fix a 'install' target in the Makefile, that prevents EXTRAS from | |
852 | beeing installed. | |
853 | ||
b581515c KS |
854 | udev 069 |
855 | ======== | |
856 | A bunch of mostly trivial bugfixes. From now on no node name or | |
857 | symlink name can contain any character than plain whitelisted ascii | |
858 | characters or validated utf8 byte-streams. This is needed for the | |
e688ad2d | 859 | /dev/disk/by-label/* links, because we import untrusted data and |
b581515c KS |
860 | export it to the filesystem. |
861 | ||
24a12dcb KS |
862 | udev 068 |
863 | ======== | |
864 | More bugfixes. If udevd was started from the kernel, we don't | |
865 | have stdin/stdout/stderr, which broke the forked tools in some | |
866 | situations. | |
867 | ||
868 | udev 067 | |
869 | ======== | |
870 | Bugfix. udevstart event ordering was broken for a long time. | |
e688ad2d | 871 | The new run_program() uncovered it, because /dev/null was not |
24a12dcb KS |
872 | available while we try to run external programs. |
873 | Now udevstart should create it before we run anything. | |
874 | ||
6214290d KS |
875 | udev 066 |
876 | ======== | |
877 | Minor bugfixes and some distro rules updates. If you don't have the | |
878 | persistent disk rules in /dev/disk/by-*/* on your distro, just | |
879 | grab it from here. :) | |
880 | ||
61341fae KS |
881 | udev 065 |
882 | ======== | |
883 | We can use socket communication now to pass events from udev to | |
884 | other programs: | |
885 | RUN+="socket:/org/freedesktop/hal/udev_event" | |
886 | will pass the whole udev event to the HAL daemon without the need | |
887 | for a forked helper. (See ChangeLog for udevmonitor, as an example) | |
888 | ||
889 | udev 064 | |
890 | ======== | |
891 | Mostly bugfixes and see ChangeLog. | |
892 | ||
893 | The test for the existence of an environment value should be | |
894 | switched from: | |
895 | ENV{KEY}=="*" to ENV{KEY}=="?*" | |
e688ad2d | 896 | because "*" will not fail anymore, if the key does not exist or |
61341fae KS |
897 | is empty. |
898 | ||
899 | udev 063 | |
900 | ======== | |
901 | Bugfixes and a few tweaks described in the ChangeLog. | |
902 | ||
97c0448d KS |
903 | udev 062 |
904 | ======== | |
905 | Mostly a Bugfix release. | |
906 | ||
907 | Added WAIT_FOR_SYSFS="<attribute>" to be able to fight against the sysfs | |
908 | timing with custom rules. | |
909 | ||
133dd3ce KS |
910 | udev 061 |
911 | ======== | |
912 | We changed the internal rule storage format. Our large rule files took | |
913 | 2 MB of RAM, with the change we are down to 99kB. | |
914 | ||
915 | If the device-node has been created with default name and no symlink or | |
916 | options are to remenber, it is not longer stored in the udevdb. HAL will | |
917 | need to be updated to work correctly with that change. | |
918 | ||
919 | To overrride optimization flags, OPTFLAGS may be used now. | |
920 | ||
921 | udev 060 | |
922 | ======== | |
923 | Bugfix release. | |
924 | ||
be0856c8 KS |
925 | udev 059 |
926 | ======== | |
927 | Major changes happened with this release. The goal is to take over the | |
928 | complete kernel-event handling and provide a more efficient way to dispatch | |
929 | kernel events. Replacing most of the current shell script logic and the | |
930 | kernel forked helper with a netlink-daemon and a rule-based event handling. | |
931 | ||
932 | o udevd listens to netlink events now. The first valid netlink event | |
933 | will make udevd ignore any message from udevsend that contains a | |
934 | SEQNUM, to avoid duplicate events. The forked events can be disabled | |
935 | with: | |
936 | echo "" > /proc/sys/kernel/hotplug | |
937 | For full support, the broken input-subsytem needs to be fixed, not to | |
938 | bypass the driver core. | |
939 | ||
940 | o /etc/dev.d/ + /etc/hotplug.d/ directory multiplexing is completely | |
941 | removed from udev itself and must be emulated by calling small | |
942 | helper binaries provided in the extras folder: | |
943 | make EXTRAS=extras/run_directory/ | |
944 | will build udev_run_devd and udev_run_hotplugd, which can be called | |
945 | from a rule if needed: | |
946 | RUN+="/sbin/udev_run_hotplugd" | |
947 | The recommended way to handle this is to convert all the calls from | |
948 | the directories to explicit udev rules and get completely rid of the | |
949 | multiplexing. (To catch a ttyUSB event, you now no longer need to | |
950 | fork and exit 300 tty script instances you are not interested in, it | |
951 | is just one rule that matches exactly the device.) | |
952 | ||
953 | o udev handles now _all_ events not just events for class and block | |
954 | devices, this way it is possible to control the complete event | |
955 | behavior with udev rules. Especially useful for rules like: | |
956 | ACTION="add", DEVPATH="/devices/*", MODALIAS=="?*", RUN+="/sbin/modprobe $modalias" | |
957 | ||
958 | o As used in the modalias rule, udev supports now textual | |
959 | substitution placeholder along with the usual format chars. This | |
960 | needs to be documented, for now it's only visible in udev_rules_parse.c. | |
961 | ||
962 | o The rule keys support now more operations. This is documented in the | |
963 | man page. It is possible to add values to list-keys like the SYMLINK | |
964 | and RUN list with KEY+="value" and to clear the list by assigning KEY="". | |
965 | Also "final"-assignments are supported by using KEY:="value", which will | |
966 | prevent changing the key by any later rule. | |
967 | ||
968 | o kernel 2.6.12 has the "detached_state" attribute removed from | |
969 | sysfs, which was used to recognize sysfs population. We switched that | |
970 | to wait for the "bus" link, which is only available in kernels after 2.6.11. | |
971 | Running this udev version on older kernels may cause a short delay for | |
972 | some events. | |
973 | ||
974 | o To provide infrastructure for persistent device naming, the id programs: | |
975 | scsi_id, vol_id (former udev_volume_id), and ata_id (new) are able now | |
976 | to export the probed data in environment key format: | |
977 | pim:~ # /sbin/ata_id --export /dev/hda | |
978 | ID_MODEL=HTS726060M9AT00 | |
979 | ID_SERIAL=MRH401M4G6UM9B | |
980 | ID_REVISION=MH4OA6BA | |
981 | ||
982 | The following rules: | |
983 | KERNEL="hd*[!0-9]", IMPORT="/sbin/ata_id --export $tempnode" | |
984 | KERNEL="hd*[!0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_MODEL}_$env{ID_SERIAL}" | |
985 | ||
986 | Will create: | |
987 | kay@pim:~> tree /dev/disk | |
988 | /dev/disk | |
989 | |-- by-id | |
990 | | |-- HTS726060M9AT00_MRH401M4G6UM9B -> ../../hda | |
991 | | `-- IBM-Memory_Key -> ../../sda | |
992 | |-- by-label | |
993 | | |-- swap -> ../../hda1 | |
994 | | |-- date -> ../../sda1 | |
995 | | `-- home -> ../../hda3 | |
996 | `-- by-uuid | |
997 | |-- 2E08712B0870F2E7 -> ../../hda3 | |
998 | |-- 9352cfef-7687-47bc-a2a3-34cf136f72e1 -> ../../hda1 | |
999 | |-- E845-7A89 -> ../../sda1 | |
1000 | `-- b2a61681-3812-4f13-a4ff-920d70604299 -> ../../hda2 | |
1001 | ||
1002 | The IMPORT= operation will import these keys in the environment and make | |
1003 | it available for later PROGRAM= and RUN= executed programs. The keys are | |
1004 | also stored in the udevdb and can be queried from there with one of the | |
1005 | next udev versions. | |
1006 | ||
1007 | o A few binaries are silently added to the repository, which can be used | |
1008 | to replay kernel events from initramfs instead of using coldplug. udevd | |
1009 | can be instructed now to queue-up events while the stored events from | |
1010 | initramfs are filled into the udevd-queue. This code is still under | |
1011 | development and there is no documentation now besides the code itself. | |
1012 | The additional binaries get compiled, but are not installed by default. | |
1013 | ||
1014 | o There is also a temporary fix for a performance problem where too many | |
1015 | events happen in parallel and every event needs to parse the rules. | |
1016 | udev can now read precompiled rules stored on disk. This is likely to be | |
1017 | replaced by a more elegant solution in a future udev version. | |
1018 | ||
1019 | udev 058 | |
1020 | ======== | |
1021 | With kernel version 2.6.12, the sysfs file "detached_state" was removed. | |
1022 | Fix for libsysfs not to expect this file was added. | |
1023 | ||
6b493a20 KS |
1024 | udev 057 |
1025 | ======== | |
e4388fb3 | 1026 | All rules are applied now, but only the first matching rule with a NAME-key |
16eb35d1 KS |
1027 | will be applied. All later rules with NAME-key are completely ignored. This |
1028 | way system supplied symlinks or permissions gets applied to user-defined | |
1029 | naming rules. | |
1030 | ||
e4388fb3 KS |
1031 | Note: |
1032 | Please check your rules setup, if you may need to add OPTIONS="last_rule" | |
1033 | to some rules, to keep the old behavior. | |
1034 | ||
1035 | The rules are read on "remove"-events too. That makes is possible to match | |
1036 | with keys that are available on remove (KERNEL, SUBSYSTEM, ID, ENV, ...) to | |
16eb35d1 KS |
1037 | instruct udev to ignore an event (OPTIONS="ignore_device"). |
1038 | The new ACTION-key may be used to let a rule act only at a "remove"-event. | |
e4388fb3 KS |
1039 | |
1040 | The new RUN-key supports rule-based execution of programs after device-node | |
16eb35d1 KS |
1041 | handling. This is meant as a general replacement for the dev.d/-directories |
1042 | to give fine grained control over the execution of programs. | |
e4388fb3 KS |
1043 | |
1044 | The %s{}-sysfs format char replacement values are searched at any of the | |
1045 | devices in the device chain now, not only at the class-device. | |
1046 | ||
6b493a20 KS |
1047 | We support log priority levels now. The value udev_log in udev.conf is used |
1048 | to determine what is printed to syslog. This makes it possible to | |
1049 | run a version with compiled-in debug messages in a production environment | |
1050 | which is sometimes needed to find a bug. | |
1051 | It is still possible to supress the inclusion of _any_ syslog usage with | |
1052 | USE_LOG=false to create the smallest possible binaries if needed. | |
1053 | The configured udev_log value can be overridden with the environment variable | |
1054 | UDEV_LOG. | |
1055 | ||
7f7ae03a KS |
1056 | udev 056 |
1057 | ======== | |
1058 | Possible use of a system-wide klibc: | |
16eb35d1 | 1059 | make USE_KLIBC=true KLCC=/usr/bin/klcc all |
7f7ae03a KS |
1060 | will link against an external klibc and our own version will be ignored. |
1061 | ||
143139a1 KS |
1062 | udev 055 |
1063 | ======== | |
1064 | We support an unlimited count of symlinks now. | |
1065 | ||
1066 | If USE_STATIC=true is passed to a glibc build, we link statically and use | |
1067 | a built-in userdb parser to resolve user and group names. | |
1068 | ||
e688ad2d | 1069 | The PLACE= key is gone. It can be replaced by an ID= for a long time, because |
143139a1 KS |
1070 | we walk up the chain of physical devices to find a match. |
1071 | ||
28ce66de | 1072 | The KEY="<value>" format supports '=', '==', '!=,' , '+=' now. This makes it |
38285d23 KS |
1073 | easy to skip certain attribute matches without composing rules with weird |
1074 | character class negations like: | |
28ce66de | 1075 | KERNEL="[!s][!c][!d]*" |
38285d23 | 1076 | this can now be replaced with: |
28ce66de | 1077 | KERNEL!="scd*" |
38285d23 KS |
1078 | The current simple '=' is still supported, and should work as it does today, |
1079 | but existing rules should be converted if possible, to be better readable. | |
1080 | ||
fc90ce81 KS |
1081 | We have new ENV{}== key now, to match against a maximum of 5 environment |
1082 | variables. | |
0e33828a | 1083 | |
e688ad2d | 1084 | udevstart is its own binary again, because we don't need co carry this araound |
0e33828a | 1085 | with every forked event. |