diff options
Diffstat (limited to 'src/udev/NEWS')
| -rw-r--r-- | src/udev/NEWS | 1735 |
1 files changed, 0 insertions, 1735 deletions
diff --git a/src/udev/NEWS b/src/udev/NEWS deleted file mode 100644 index f4f6f4e327..0000000000 --- a/src/udev/NEWS +++ /dev/null @@ -1,1735 +0,0 @@ -udev 182 -======== -Rules files in /etc/udev/rules.s/ with the same name as rules files in -/run/udev/rules.d/ now always have precedence. The stack of files is now: -/usr/lib (package), /run (runtime, auto-generated), /etc (admin), while -the later ones override the earlier ones. In other words: the admin has -always the last say. - -USB auto-suspend is now enabled by default for some built-in USB HID -devices. - -/dev/disk/by-path/ links are no longer created for ATA devices behind -an 'ATA transport class', the logic to extract predictable numbers does -not exist in the kernel at this moment. - -/dev/disk/by-id/scsi-* compatibility links are no longer created for -ATA devices, they have their own ata-* prefix. - -The s390 rule to set mode == 0666 for /dev/z90crypt is is removed from -the udev tree and will be part of s390utils (or alternatively could be -done by the kernel driver itself). - -The udev-acl tool is no longer provided, it will be part of a future -ConsoleKit release. On systemd systems, advanced ConsoleKit and udev-acl -functionality are provided by systemd. - -udev 181 -======== -Require kmod version 5. - -Provide /dev/cdrom symlink for /dev/sr0. - -udev 180 -======== -Fix for ID_PART_ENTRY_* property names, added by the blkid built-in. The -fix is needed for udisk2 to operate properly. - -Fix for skipped rule execution when the kernel has removed the device -node in /dev again, before the event was even started. The fix is needed -to run device-mapper/LVM events properly. - -Fix for the man page installation, which was skipped when xsltproc was not -installed. - -udev 179 -======== -Bugfix for $name resolution, which broke at least some keymap handling. - -udev 178 -======== -Bugfix for the firmware loading behavior with kernel modules which -try to load firmware in the module_init() path. The blocked event -runs into a timout now, which should allow the firmware to be loaded. - -Bugfix for a wrong DEVNAME= export, which breaks at least the udev-acl -tool. - -Bugfix for missing ID_ properties for GPT partitions. - -The RUN+="socket:.." option is deprecated and should not be used. A warning -during rules parsing is printed now. Services which listen to udev events, -need to subscribe to the netlink messages with libudev and not let udev block -in the rules execution until the message is delivered. - -udev 177 -======== -Bugfix for rule_generator instalation. - -udev 176 -======== -The 'devtmpfs' filesystem is required now, udev will not create or delete -device nodes anymore, it only adjusts permissions and ownership of device -nodes and maintains additional symlinks. - -A writable /run directory (ususally tmpfs) is required now for a fully -functional udev, there is no longer a fallback to /dev/.udev. - -The default 'configure' install locations have changed. Packages for systems -with the historic / vs. /usr split need to be adapted, otherwise udev will -be installed in /usr and not work properly. Example configuration options -to install things the traditional way are in INSTALL. - -The default install location of the 'udevadm' tool moved from 'sbin' -to /usr/bin. Some tools expect udevadm in 'sbin', a symlink to udevadm -needs to be manually created if needed, or --bindir=/sbin be specified. - -The expected value of '--libexecdir=' has changed and must no longer contain -the 'udev' directory. - -Kernel modules are now loaded directly by linking udev to 'libkmod'. The -'modprobe' tool is no longer executed by udev. - -The 'blkid' tool is no longer executed from udev rules. Udev links -directly to libblkid now. - -Firmware is loaded natively by udev now, the external 'firmware' binary -is no longer used. - -All built-in tools can be listed and tested with 'udevadm test-builtin'. - -The 'udevadm control --reload-rules' option has been renamed to '--reload'. -It now also reloads the kernel module configuration. - -The systemd socket files use PassCredentials=yes, which is available in -systemd version 38. - -The udev build system only creates a .xz tarball now. - -All tabs in the source code used for indentation are replaced by spaces now. :) - -udev 175 -======== -Bugfixes. - -udev 174 -======== -Bugfixes. - -The udev daemon moved to /lib/udev/udevd. Non-systemd init systems -and non-dracut initramfs image generators need to change the init -scripts. Alternatively the udev build needs to move udevd back to -/sbin or create a symlink in /sbin, which is not done by default. - -The path_id, usb_id, input_id tools are built-in commands now and -the stand-alone tools do not exist anymore. Static lists of file in -initramfs generators need to be updated. For testing, the commands -can still be executed standalone with 'udevadm test-builtin <cmd>'. - -The fusectl filesystem is no longer mounted directly from udev. -Systemd systems will take care of mounting fusectl and configfs -now. Non-systemd systems need to ship their own rule if they -need these filesystems auto-mounted. - -The long deprecated keys: SYSFS=, ID=, BUS= have been removed. - -The support for 'udevadm trigger --type=failed, and the -RUN{fail_event_on_error} attribute was removed. - -The udev control socket is now created in /run/udev/control -and no longer as an abstract namespace one. - -The rules to create persistent network interface and cdrom link -rules automatically in /etc/udev/rules.d/ have been disabled by -default. Explicit configuration will be required for these use -cases, udev will no longer try to write any persistent system -configuration from a device hotplug path. - -udev 173 -======== -Bugfixes. - -The udev-acl extra is no longer enabled by default now. To enable it, ---enable-udev_acl needs to be given at ./configure time. On systemd -systems, the udev-acl rules prevent it from running as the functionality -has moved to systemd. - -udev 172 -======== -Bugfixes. - -Udev now enables kernel media-presence polling if available. Part -of udisks optical drive tray-handling moved to cdrom_id: The tray -is locked as soon as a media is detected to enable the receiving -of media-eject-request events. Media-eject-request events will -eject the media. - -Libudev enumerate is now able to enumerate a subtree of a given -device. - -The mobile-action-modeswitch modeswitch tool was deleted. The -functionality is provided by usb_modeswitch now. - -udev 171 -======== -Bugfixes. - -The systemd service files require systemd version 28. The systemd -socket activation make it possible now to start 'udevd' and 'udevadm -trigger' in parallel. - -udev 170 -======== -Fix bug in control message handling, which can lead to a failing -udevadm control --exit. Thanks to Jürg Billeter for help tracking -it down. - -udev 169 -======== -Bugfixes. - -We require at least Linux kernel 2.6.32 now. Some platforms might -require a later kernel that supports accept4() and similar, or -need to backport the trivial syscall wiring to the older kernels. - -The hid2hci tool moved to the bluez package and was removed. - -Many of the extras can be --enable/--disabled at ./configure -time. The --disable-extras option was removed. Some extras have -been disabled by default. The current options and their defaults -can be checked with './configure --help'. - -udev 168 -======== -Bugfixes. - -Udev logs a warning now if /run is not writable at udevd -startup. It will still fall back to /dev/.udev, but this is -now considered a bug. - -The running udev daemon can now cleanly shut down with: - udevadm control --exit - -Udev in initramfs should clean the state of the udev database -with: udevadm info --cleanup-db which will remove all state left -behind from events/rules in initramfs. If initramfs uses ---cleanup-db and device-mapper/LVM, the rules in initramfs need -to add OPTIONS+="db_persist" for all dm devices. This will -prevent removal of the udev database for these devices. - -Spawned programs by PROGRAM/IMPORT/RUN now have a hard timeout of -120 seconds per process. If that timeout is reached the spawned -process will be killed. The event timeout can be overwritten with -udev rules. - -If systemd is used, udev gets now activated by netlink data. -Systemd will bind the netlink socket which will buffer all data. -If needed, such setup allows a seemless update of the udev daemon, -where no event can be lost during a udevd update/restart. -Packages need to make sure to: systemctl stop udev.socket udev.service -or 'mask' udev.service during the upgrade to prevent any unwanted -auto-spawning of udevd. -This version of udev conflicts with systemd version below 25. The -unchanged service files will not wirk correctly. - -udev 167 -======== -Bugfixes. - -The udev runtime data moved from /dev/.udev/ to /run/udev/. The -/run mountpoint is supposed to be a tmpfs mounted during early boot, -available and writable to for all tools at any time during bootup, -it replaces /var/run/, which should become a symlink some day. - -If /run does not exist, or is not writable, udev will fall back using -/dev/.udev/. - -On systemd systems with initramfs and LVM used, packagers must -make sure, that the systemd and initramfs versions match. The initramfs -needs to create the /run mountpoint for udev to store the data, and -mount this tmpfs to /run in the rootfs, so the that the udev database -is preserved for the udev version started in the rootfs. - -The command 'udevadm info --convert-db' is gone. The udev daemon -itself, at startup, converts any old database version if necessary. - -The systemd services files have been reorganized. The udev control -socket is bound by systemd and passed to the started udev daemon. -The udev-settle.service is no longer active by default. Services which -can not handle hotplug setups properly need to actively pull it in, to -act like a barrier. Alternatively the settle service can be unconditionally -'systemctl'enabled, and act like a barrier for basic.target. - -The fstab_import callout is no longer built or installed. Udev -should not be used to mount, does not watch changes to fstab, and -should not mirror fstab values in the udev database. - -udev 166 -======== -Bugfixes. - -New and updated keymaps. - -udev 165 -======== -Bugfixes. - -The udev database has changed, After installation of a new udev -version, 'udevadm info --convert-db' should be called, to let the new -udev/libudev version read the already stored data. - -udevadm now supports quoting of property values, and prefixing of -key names: - $ udevadm info --export --export-prefix=MY_ --query=property -n sda - MY_MAJOR='259' - MY_MINOR='0' - MY_DEVNAME='/dev/sda' - MY_DEVTYPE='disk' - ... - -libudev now supports: - udev_device_get_is_initialized() - udev_enumerate_add_match_is_initialized() -to be able to skip devices the kernel has created , but udev has -not already handled. - -libudev now supports: - udev_device_get_usec_since_initialized() -to retrieve the "age" of a udev device record. - -GUdev supports a more generic GUdevEnumerator class, udev TAG -handling, device initialization and timestamp now. - -The counterpart of /sys/dev/{char,block}/$major:$minor, -/dev/{char,block}/$major:$minor symlinks are now unconditionally -created, even when no rule files exist. - -New and updated keymaps. - -udev 164 -======== -Bugfixes. - -GUdev moved from /usr to /. - -udev 163 -======== -Bugfixes. - -udev 162 -======== -Bugfixes. - -Persistent network naming rules are disabled inside of Qemu/KVM now. - -New and updated keymaps. - -Udev gets unconditionally enabled on systemd installations now. There -is no longer the need to to run 'systemctl enable udev.service'. - -udev 161 -======== -Bugfixes. - -udev 160 -======== -Bugfixes. - -udev 159 -======== -Bugfixes. - -New and fixed keymaps. - -Install systemd service files if applicable. - -udev 158 -======== -Bugfixes. - -All distribution specific rules are removed from the udev source tree, -most of them are no longer needed. The Gentoo rules which allow to support -older kernel versions, which are not covered by the default rules anymore -has moved to rules/misc/30-kernel-compat.rules. - -udev 157 -======== -Bugfixes. - -The option --debug-trace and the environemnt variable UDEVD_MAX_CHILDS= -was removed from udevd. - -Udevd now checks the kernel commandline for the following variables: - udev.log-priority=<syslog priority> - udev.children-max=<maximum number of workers> - udev.exec-delay=<seconds to delay the execution of RUN=> -to help debuging coldplug setups where the loading of a kernel -module crashes the system. - -The subdirectory in the source tree rules/packages has been renamed to -rules/arch, anc contains only architecture specific rules now. - -udev 156 -======== -Bugfixes. - -udev 155 -======== -Bugfixes. - -Now the udev daemon itself, does on startup: - - copy the content of /lib/udev/devices to /dev - - create the standard symlinks like /dev/std{in,out,err}, - /dev/core, /dev/fd, ... - - use static node information provided by kernel modules - and creates these nodes to allow module on-demand loading - - possibly apply permissions to all ststic nodes from udev - rules which are annotated to match a static node - -The default mode for a device node is 0600 now to match the kernel -created devtmpfs defaults. If GROUP= is specified and no MODE= is -given the default will be 0660. - -udev 154 -======== -Bugfixes. - -Udev now gradually starts to pass control over the primary device nodes -and their names to the kernel, and will in the end only manage the -permissions of the node, and possibly create additional symlinks. -As a first step NAME="" will be ignored, and NAME= setings with names -other than the kernel provided name will result in a logged warning. -Kernels that don't provide device names, or devtmpfs is not used, will -still work as they did before, but it is strongly recommended to use -only the same names for the primary device node as the recent kernel -provides for all devices. - -udev 153 -======== -Fix broken firmware loader search path. - -udev 152 -======== -Bugfixes. - -"udevadm trigger" defaults to "change" events now instead of "add" -events. The "udev boot script" might need to add "--action=add" to -the trigger command if not already there, in case the initial coldplug -events are expected as "add" events. - -The option "all_partitons" was removed from udev. This should not be -needed for usual hardware. Udev can not safely make assumptions -about non-existing partition major/minor numbers, and therefore no -longer provide this unreliable and unsafe option. - -The option "ignore_remove" was removed from udev. With devtmpfs -udev passed control over device nodes to the kernel. This option -should not be needed, or can not work as advertised. Neither -udev nor the kernel will remove device nodes which are copied from -the /lib/udev/devices/ directory. - -All "add|change" matches are replaced by "!remove" in the rules and -in the udev logic. All types of events will update possible symlinks -and permissions, only "remove" is handled special now. - -The modem modeswitch extra was removed and the external usb_modeswitch -program should be used instead. - -New and fixed keymaps. - -udev 151 -======== -Bugfixes. - -udev 150 -======== -Bugfixes. - -Kernels with SYSFS_DEPRECATED=y are not supported since a while. Many users -depend on the current sysfs layout and the information not available in the -deprecated layout. All remaining support for the deprecated sysfs layout is -removed now. - -udev 149 -======== -Fix for a possible endless loop in the new input_id program. - -udev 148 -======== -Bugfixes. - -The option "ignore_device" does no longer exist. There is no way to -ignore an event, as libudev events can not be suppressed by rules. -It only prevented RUN keys from being executed, which results in an -inconsistent behavior in current setups. - -BUS=, SYSFS{}=, ID= are long deprecated and should be SUBSYSTEM(S)=, -ATTR(S){}=, KERNEL(S)=. It will cause a warning once for every rule -file from now on. - -The support for the deprecated IDE devices has been removed from the -default set of rules. Distros who still care about non-libata drivers -need to add the rules to the compat rules file. - -The ID_CLASS property on input devices has been replaced by the more accurate -set of flags ID_INPUT_{KEYBOARD,KEY,MOUSE,TOUCHPAD,TABLET,JOYSTICK}. These are -determined by the new "input_id" prober now. Some devices, such as touchpads, -can have several classes. So if you previously had custom udev rules which e. g. -checked for ENV{ID_CLASS}=="kbd", you need to replace this with -ENV{ID_INPUT_KEYBOARD}=="?*". - -udev 147 -======== -Bugfixes. - -To support DEVPATH strings larger than the maximum file name length, the -private udev database format has changed. If some software still reads the -private files in /dev/.udev/, which it shouldn't, now it's time to fix it. -Please do not port anything to the new format again, everything in /dev/.udev -is and always was private to udev, and may and will change any time without -prior notice. - -Multiple devices claiming the same names in /dev are limited to symlinks -only now. Mixing identical symlink names and node names is not supported. -This reduces the amount of data in the database significantly. - -NAME="%k" causes a warning now. It's is and always was completely superfluous. -It will break kernel supplied DEVNAMEs and therefore it needs to be removed -from all rules. - -Most NAME= instructions got removed. Kernel 2.6.31 supplies the needed names -if they are not the default. To support older kernels, the NAME= rules need to -be added to the compat rules file. - -Symlinks to udevadm with the old command names are no longer resolved to -the udevadm commands. - -The udev-acl tool got adopted to changes in ConsoleKit. Version 0.4.1 is -required now. - -The option "last_rule" does no longer exist. Its use breaks too many -things which expect to be run from independent later rules, and is an idication -that something needs to be fixed properly instead. - -The gudev API is no longer marked as experimental, -G_UDEV_API_IS_SUBJECT_TO_CHANGE is no longer needed. The gudev introspection -is enabled by default now. Various projects already depend on introspection -information to bind dynamic languages to the gudev interfaces. - -udev 146 -======== -Bugfixes. - -The udevadm trigger "--retry-failed" option, which is replaced since quite -a while by "--type=failed" is removed. - -The failed tracking was not working at all for a few releases. The RUN -option "ignore_error" is replaced by a "fail_event_on_error" option, and the -default is not to track any failing RUN executions. - -New keymaps, new modem, hid2hci updated. - -udev 145 -======== -Fix possible crash in udevd when worker processes are busy, rules are -changed at the same time, and workers get killed to reload the rules. - -udev 144 -======== -Bugfixes. - -Properties set with ENV{.FOO}="bar" are marked private by starting the -name with a '.'. They will not be stored in the database, and not be -exported with the event. - -Firmware files are looked up in: - /lib/firmware/updates/$(uname -r) - /lib/firmware/updates - /lib/firmware/$(uname -r) - /lib/firmware" -now. - -ATA devices switched the property from ID_BUS=scsi to ID_BUS=ata. -ata_id, instead of scsi_id, is the default tool now for ATA devices. - -udev 143 -======== -Bugfixes. - -The configure options have changed because another library needs to be -installed in a different location. Instead of exec_prefix and udev_prefix, -libdir, rootlibdir and libexecdir are used. The Details are explained in -the README file. - -Event processes now get re-used after they handled an event. This reduces -the number of forks and the pressure on the CPU significantly, because -cloned event processes no longer cause page faults in the main daemon. -After the events have settled, a few worker processes stay around for -future events, all others get cleaned up. - -To be able to use signalfd(), udev depends on kernel version 2.6.25 now. -Also inotify support is mandatory now to run udev. - -The format of the queue exported by the udev damon has changed. There is -no longer a /dev/.udev/queue/ directory. The current event queue can be -accessed with udevadm settle and libudedv. - -Libudev does not have the unstable API header anymore. From now on, -incompatible changes will be handled by bumping the library major version. - -To build udev from the git tree gtk-doc is needed now. The tarballs will -build without it and contain the pre-built documentation. An online copy -is available here: - http://www.kernel.org/pub/linux/utils/kernel/hotplug/libudev/ - -The tools from the udev-extras repository have been merged into the main -udev repository. Some of the extras have larger external dependencies, and -they can be disabled with the configure switch --disable-extras. - -udev 142 -======== -Bugfixes. - -The program vol_id and the library libvolume_id are removed from the -repository. Libvolume_id is merged with libblkid from the util-linux-ng -package. Persistent disk links for label and uuid depend on the -util-linux-ng version (2.15) of blkid now. Older versions of blkid -can not be used with udev. - -Libudev allows to subscribe to udev events. To prevent unwanted messages -to be delivered, and waking up the subscribing process, a filter can be -installed, to drop messages inside a kernel socket filter. The filters -match on the <subsytem>:<devtype> properties of the device. - This is part of the ongoing effort to replace HAL, and switch current -users over to directly use libudev. - Libudev is still marked as experimental, and its interface might -eventually change if needed, but no major changes of the currently exported -interface are expected anymore, and a first stable release should happen -soon. - -A too old kernel (2.6.21) or a kernel with CONFIG_SYSFS_DEPRECATED -is not supported since while and udevd will log an error message at -startup. It should still be able to boot-up, but advanced rules and system -services which depend on the information not available in the old sysfs -format will fail to work correctly. - -DVB device naming is supplied by the kernel now. In case older kernels -need to be supported, the old shell script should be added to a compat -rules file. - -udev 141 -======== -Bugfixes. - -The processed udev events get send back to the netlink socket. Libudev -provides access to these events. This is work-in-progress, to replace -the DeviceKit daemon functionality directly with libudev. There are -upcoming kernel changes to allow non-root users to subcribe to these -events. - -udev 140 -======== -Bugfixes. - -"udevadm settle" now optionally accepts a range of events to wait for, -instead of waiting for "all" events. - -udev 139 -======== -Bugfixes. - -The installed watch for block device metadata changes is now removed -during event hadling, because some (broken) tools may be called from udev -rules and (wrongly) open the device with write access. After the finished -event handling the watch is restored. - -udev 138 -======== -Bugfixes. - -Device nodes can be watched for changes with inotify with OPTIONS="watch". -If closed after being opened for writing, a "change" uevent will occur. -/dev/disk/by-{label,uuid}/* symlinks will be automatically updated. - -udev 137 -======== -Bugfixes. - -The udevadm test command has no longer a --force option, nodes and symlinks -are always updated with a test run now. - -The udevd daemon can be started with --resolve-names=never to avoid all user -and group lookups (e.g. in cut-down systems) or --resolve-names=late to -lookup user and groups every time events are handled. - -udev 136 -======== -Bugfixes. - -We are currently merging the Ubuntu rules in the udev default rules, -and get one step closer to provide a common Linux /dev setup, regarding -device names, symlinks, and default device permissions. On udev startup, -we now expect the following groups to be resolvable to their ids with -glibc's getgrnam(): - disk, cdrom, floppy, tape, audio, video, lp, tty, dialout, kmem. -LDAP setups need to make sure, that these groups are always resolvable at -bootup, with only the rootfs mounted, and without network access available. - -Some systems may need to add some new, currently not used groups, or need -to add some users to new groups, but the cost of this change is minimal, -compared to the pain the current, rather random, differences between the -various distributions cause for upstream projects and third-party vendors. - -In general, "normal" users who log into a machine should never be a member -of any such group, but the device-access should be managed by dynamic ACLs, -which get added and removed for the specific users on login/logout and -session activity/inactivity. These groups are only provided for custom setups, -and mainly system services, to allow proper privilege separation. -A video-streaming daemon uid would be a member of "audio" and "video", to get -access to the sound and video devices, but no "normal" user should ever belong -to the "audio" group, because he could listen to the built-in microphone with -any ssh-session established from the other side of the world. - -/dev/serial/by-{id,path}/ now contains links for ttyUSB devices, -which do not depend on the kernel device name. As usual, unique -devices - only a single one per product connected, or a real -USB serial number in the device - are always found with the same -name in the by-id/ directory. -Completely identical devices may overwrite their names in by-id/ -and can only be found reliably in the by-path/ directory. Devices -specified by by-path/ must not change their connection, like the -USB port number they are plugged in, to keep their name. - -To support some advanced features, Linux 2.6.22 is the oldest supported -version now. The kernel config with enabled SYSFS_DEPRECATED is no longer -supported. Older kernels should still work, and devices nodes should be -reliably created, but some rules and libudev will not work correctly because -the old kernels do not provide the expected information or interfaces. - -udev 135 -======== -Bugfixes. - -Fix for a possible segfault while swapping network interface names in udev -versions 131-134. - -udev 134 -======== -Bugfixes. - -The group "video" is part of the default rules now. - -udev 133 -======== -Bugfix for kernels using SYSFS_DEPRECATED* option and finding parent -block devices in some cases. No common distro uses this option anymore, -and we do not get enough testing for this and recent udev versions. If -this option is not needed to run some old distro with a new kernel, -it should be disabled in the kernel config. - -Bugfix for the $links substitution variable, which may crash if no links -are created. This should not happen in usual setups because we always -create /dev/{block,char}/ links. - -The strings of the parsed rules, which are kept in memory, no longer -contain duplicate entries, or duplicate tails of strings. This, and the -new rules parsing/matching code reduces the total in-memory size of -a huge distro rule sets to 0.08 MB, compared to the 1.2MB of udev -version 130. - -The export of DEVTYPE=disk/partition got removed from the default -rules. This value is available from the kernel. The pnp shell script -modprobe hack is removed from the default rules. ACPI devices have _proper_ -modalias support and take care of the same functionality. -Installations which support old kernels, but install current default -udev rules may want to add that to the compat rules file. - -Libvolume_id now always probes for all known filesystems, and does not -stop at the first match. Some filesystems are marked as "exclusive probe", -and if any other filesytem type matches at the same time, libvolume_id -will, by default, not return any probing result. This is intended to prevent -mis-detection with conflicting left-over signatures found from earlier -file system formats. That way, we no longer depend on the probe-order -in case of multiple competing signatures. In some setups the kernel allows -to mount a volume with just the old filesystem signature still in place. -This may damage the new filesystem and cause data-loss, just by mounting -it. Because volume_id can not decide which one the correct signature is, -the wrong signatures need to be removed manually from the volume, or the -volume needs to be reformatted, to enable filesystem detection and possible -auto-mounting. - -udev 132 -======== -Fix segfault if compiled without optimization and dbg() does not get -compiled out and uses variables which are not available. - -udev 131 -======== -Bugfixes. (And maybe new bugs. :)) - -The rule matching engine got converted from a rule list to a token -array which reduced the in-memory rules representation of a full -featured distros with thousends of udev rules from 1.2MB to 0.12 MB. -Limits like 5 ENV and ATTR matches, and one single instance for most -other keys per rule are gone. - -The NAME assignment is no longer special cased. If later rules assign -a NAME value again, the former value will be overwritten. As usual -for most other keys, the NAME value can be protected by doing a final -assignment with NAME:="<value>". - -All udev code now uses libudev, which is also exported. The library -is still under development, marked as experimental, and its interface -may change as long as the DeviceKit integration is not finished. - -Many thanks to Alan Jenkins for his continuous help, and finding and -optimizing some of the computing expensive parts. - -udev 130 -======== -Bugfixes. - -Kernel devices and device nodes are connected now by reverse indizes in -/sys and /dev. A device number retrieved by a stat() or similar, the -kernel device directory can be found by looking up: - /sys/dev/{block,char}/<maj>:<min> -and the device node of the same device by looking up: - /dev/{block,char}/<maj>:<min> - -udev 129 -======== -Fix recently introduced bug, which caused a compilation without large -file support, where vol_id does not recognize raid signatures at the end -of a volume. - -Firewire disks now create both, by-id/scsi-* and by-id/ieee-* links. -Seems some kernel versions prevent the creation of the ieee-* links, -so people used the scsi-* link which disappeared now. - -More libudev work. Almost all udevadm functionality comes from libudev -now. - -udevadm trigger has a new option --type, which allows to trigger events -for "devices", for "subsystems", or "failed" devices. The old option ---retry-failed" still works, but is no longer mentioned in the man page. - -udev 128 -======== -Bugfixes. - -The udevadm info --device-id-of-file= output has changed to use -the obvious format. Possible current users should use the --export -option which is not affected. - -The old udev commands symlinks to udevadm are not installed, if -these symlinks are used, a warning is printed. - -udev 127 -======== -Bugfixes. - -Optical drive's media is no longer probed for raid signatures, -reading the end of the device causes some devices to malfunction. -Also the offset of the last session found is used now to probe -for the filesystem. - -The volume_id library got a major version number update to 1, -some deprecated functions are removed. - -A shared library "libudev" gets installed now to provide access -to udev device information. DeviceKit, the successor of HAL, will -need this library to access the udev database and search sysfs for -devices. -The library is currently in an experimental state, also the API is -expected to change, as long as the DeviceKit integration is not -finished. - -udev 126 -======== -We use ./configure now. See INSTALL for details. Current -options are: - --prefix= - "/usr" - prefix for man pages, include files - --exec-prefix= - "" - the root filesystem, prefix for libs and binaries - --sysconfdir= - "/etc" - --with-libdir-name= - "lib" - directory name for libraries, not a path name - multilib 64bit systems may use "lib64" instead of "lib" - --enable-debug - compile-in verbose debug messages - --disable-logging - disable all logging and compile-out all log strings - --with-selinux - link against SELInux libraries, to set the expected context - for created files - -In the default rules, the group "disk" gets permissions 0660 instead -of 0640. One small step closer to unify distro rules. Some day, all -distros hopefully end up with the same set of rules. - -No symlinks to udevadm are installed anymore, if they are still needed, -they should be provided by the package. - -udev 125 -======== -Bugfixes. - -Default udev rules, which are not supposed to be edited by the user, should -be placed in /lib/udev/rules.d/ now, to make it clear that they are private to -the udev package and will be replaced with an update. Udev will pick up rule -files from: - /lib/udev/rules.d/ - default installed rules - /etc/udev/rules.d/ - user rules + on-the-fly generated rules - /dev/.udev/rules.d/ - temporary non-persistent rules created after bootup -It does not matter in which directory a rule file lives, all files are sorted -in lexical order. - -To help creating /dev/root, we have now: - $ udevadm info --export --export-prefix="ROOT_" --device-id-of-file=/ - ROOT_MAJOR=8 - ROOT_MINOR=5 -In case the current --device-id-of-file is already used, please switch to -the --export format version, it saves the output parsing and the old -format will be changed to use ':' as a separator, like the format in the -sysfs 'dev' file. - -udev 124 -======== -Fix cdrom_id to properly recognize blank media. - -udev 123 -======== -Bugfixes. - -Tape drive id-data is queried from /dev/bsg/* instead of the tape -nodes. This avoids rewinding tapes on open(). - -udev 122 -======== -Bugfixes. - -The symlinks udevcontrol and udevtrigger are no longer installed by -the Makefile. - -The scsi_id program does not depend on sysfs anymore. It can speak -SGv4 now, so /dev/bsg/* device nodes can be used, to query SCSI device -data, which should solve some old problems with tape devices, where -we better do not open all tape device nodes to identify the device. - -udev 121 -======== -Many bugfixes. - -The cdrom_id program is replaced by an advanced version, which can -detect most common device types, and also properties of the inserted -media. This is part of moving some basic functionality from HAL into -udev (and the kernel). - -udev 120 -======== -Bugfixes. - -The last WAIT_FOR_SYSFS rule is removed from the default rules. - -The symlinks to udevadm for the debugging tools: udevmonitor and -udevtest are no longer created. - -The symlinks to the udevadm man page for the old tool names are -no longer created. - -Abstract namespace sockets paths in RUN+="socket:@<path>" rules, -should be prefixed with '@' to indicate that the path is not a -real file. - -udev 119 -======== -Bugfixes. - -udev 118 -======== -Bugfixes. - -Udevstart is removed from the tree, it did not get installed for -a long time now, and is long replaced by trigger and settle. - -udev 117 -======== -Bugfixes. - -All udev tools are merged into a single binary called udevadm. -The old names of the tools are built-in commands in udevadm now. -Symlinks to udevadm, with the names of the old tools, provide -the same functionality as the standalone tools. There is also -only a single udevadm.8 man page left for all tools. - -Tools like mkinitramfs should be checked, if they need to include -udevadm in the list of files. - -udev 116 -======== -Bugfixes. - -udev 115 -======== -Bugfixes. - -The etc/udev/rules.d/ directory now contains a default set of basic -udev rules. This initial version is the result of a rules file merge -of Fedora and openSUSE. For these both distros only a few specific -rules are left in their own file, named after the distro. Rules which -are optionally installed, because they are only valid for a specific -architecture, or rules for subsystems which are not always used are -in etc/udev/packages/. - -udev 114 -======== -Bugfixes. - -Dynamic rules can be created in /dev/.udev/rules.d/ to trigger -actions by dynamically created rules. - -SYMLINK=="<value>" matches agains the entries in the list of -currently defined symlinks. The links are not created in the -filesystem at that point in time, but the values can be matched. - -RUN{ignore_error}+="<program>" will ignore any exit code from the -program and not record as a failed event. - -udev 113 -======== -Bugfixes. - -Final merge of patches/features from the Ubuntu package. - -udev 112 -======== -Bugfixes. - -Control characters in filesystem label strings are no longer silenty -removed, but hex-encoded, to be able to uniquely identify the device -by its symlink in /dev/disk/by-label/. -If libvolume_id is used by mount(8), LABEL= will work as expected, -if slashes or other characters are used in the label string. - -To test the existence of a file, TEST=="<file>" and TEST!="<file>" -can be specified now. The TEST key accepts an optional mode mask -TEST{0100}=="<is executable file>". - -Scsi_id now supports a mode without expecting scsi-specific sysfs -entries to allow the extraction of cciss-device persistent properties. - -udev 111 -======== -Bugfixes. - -In the future, we may see uuid's which are just simple character -strings (see the DDF Raid Specification). For that reason vol_id now -exports ID_FS_UUID_SAFE, just like ID_FS_LABEL_SAFE. For things like -the creation of symlinks, the *_SAFE values ensure, that no control -or whitespace characters are used in the filename. - -Possible users of libvolume_id, please use the volume_id_get_* functions. -The public struct will go away in a future release of the library. - -udev 110 -======== -Bugfixes. - -Removal of useless extras/eventrecorder.sh. - -udev 109 -======== -Bugfixes. - -udev 108 -======== -Bugfixes. - -The directory multiplexer for dev.d/ and hotplug.d are finally removed -from the udev package. - -udev 107 -======== -Bugfixes. - -Symlinks can have priorities now, the priority is assigned to the device -and specified with OPTIONS="link_priority=100". Devices with higher -priorities overwrite the symlinks of devices with lower priorities. -If the device that currently owns the link, goes away, the symlink -will be removed, and recreated, pointing to the next device with the -highest actual priority. This should make /dev/disk/by-{label,uuid,id} -more reliable, if multiple devices contain the same metadata and overwrite -these symlinks. - -The dasd_id program is removed from the udev tree, and dasdinfo, with the -needed rules, are part of the s390-tools now. - -Please add KERNEL=="[0-9]*:[0-9]*" to the scsi wait-for-sysfs rule, -we may get the scsi sysfs mess fixed some day, and this will only catch -the devices we are looking for. - -USB serial numbers for storage devices have the target:lun now appended, -to make it possibble to distinguish broken multi-lun devices with all -the same SCSI identifiers. - -Note: The extra "run_directory" which searches and executes stuff in -/etc/hotplug.d/ and /etc/dev.d/ is long deprecated, and will be removed -with the next release. Make sure, that you don't use it anymore, or -provides your own implementation of that inefficient stuff. -We are tired of reports about a "slow udev", because these directories -contain stuff, that runs with _every_ event, instead of using rules, -that run programs only for the matching events. - -udev 106 -======== -Bugfixes. - -udev 105 -======== -Bugfixes. - -DRIVER== will match only for devices that actually have a real -driver. DRIVERS== must be used, if parent devices should be -included in the match. - -Libvolume_id's "linux_raid" detection needed another fix. - -udev 104 -======== -Bugfixes. - -udev 103 -======== -Add additional check to volume_id detection of via_raid, cause -some company decided to put a matching pattern all over the empty -storage area of their music players. - -udev 102 -======== -Fix path_id for SAS devices. - -udev 101 -======== -The udev daemon can be started with --debug-trace now, which will -execute all events serialized to get a chance to catch a possible -action that crashes the box. - -A warning is logged, if PHYSDEV* keys, the "device" link, or a parent -device attribute like $attr{../file} is used, only WAIT_FOR_SYSFS rules -are excluded from the warning. Referencing parent attributes directly -may break when something in the kernel driver model changes. Udev will -just find the attribute by walking up the parent chain. - -Udevtrigger now sorts the list of devices depending on the device -dependency, so a "usb" device is triggered after the parent "pci" -device. - -udev 100 -======== -Revert persistent-storage ata-serial '_' '-' replacement. - -udev 099 -======== -Bugfixes. - -Udevtrigger can now filter the list of devices to be triggered. Matches -for subsystems or sysfs attributes can be specified. - -The entries in /dev/.udev/queue and /dev/.udev/failed have changed to -zero-sized files to avoid pointing to /sys and confuse broken tools which -scan the /dev directory. To retry failed events, udevtrigger --retry-failed -should be used now. - -The rules and scripts to create udev rules for persistent network -devices and optical drives are in the extras/rules_generator directory -now. If you use something similar, please consider replacing your own -version with this, to share the support effort. The rule_generator -installs its own rules into /etc/udev/rules.d. - -The cdrom_id tool installs its own rule now in /etc/udev/rules.d, cause -the rule_generator depends on cdrom_id to be called in an earlier rule. - -udev 098 -======== -Bugfixes. - -Renaming of some key names (the old names still work): -BUS -> SUBSYSTEMS, ID -> KERNELS, SYSFS -> ATTRS, DRIVER -> DRIVERS. -(The behavior of the key DRIVER will change soon in one of the next -releases, to match only the event device, please switch to DRIVERS -instead. If DRIVER is used, it will behave like DRIVERS, but an error -is logged. -With the new key names, we have a more consistent and simpler scheme. -We can match the properties of the event device only, with: KERNEL, -SUBSYSTEM, ATTR, DRIVER. Or include all the parent devices in the match, -with: KERNELS, SUBSYSTEMS, ATTRS, DRIVERS. ID, BUS, SYSFS, DRIVER are no -longer mentioned in the man page and should be switched in the rule -files. - -ATTR{file}="value" can be used now, to write to a sysfs file of the -event device. Instead of: - ..., SYSFS{type}=="0|7|14", RUN+="/bin/sh -c 'echo 60 > /sys$$DEVPATH/timeout'" -we now can do: - ..., ATTR{type}=="0|7|14", ATTR{timeout}="60" - -All the PHYSDEV* keys are deprecated and will be removed from a -future kernel: - PHYDEVPATH - is the path of a parent device and should not be - needed at all. - PHYSDEVBUS - is just a SUBSYSTEM value of a parent, and can be - matched with SUBSYSTEMS== - PHYSDEVDRIVER - for bus devices it is available as ENV{DRIVER}. - Newer kernels will have DRIVER in the environment, - for older kernels udev puts in. Class device will - no longer carry this property of a parent and - DRIVERS== can be used to match such a parent value. -Note that ENV{DRIVER} is only available for a few bus devices, where -the driver is already bound at device event time. On coldplug, the -events for a lot devices are already bound to a driver, and they will have -that value set. But on hotplug, at the time the kernel creates the device, -it can't know what driver may claim the device after that, therefore -in most cases it will be empty. - -Failed events should now be re-triggered with: - udevtrigger --retry-failed. -Please switch to this command, so we keep the details of the /dev/.udev/failed/ -files private to the udev tools. We may need to switch the current symlink -target, cause some obviously broken tools try to scan all files in /dev -including /dev/.udev/, find the links to /sys and end up stat()'ing sysfs files -million times. This takes ages on slow boxes. - -The udevinfo attribute walk (-a) now works with giving a device node -name (-n) instead of a devpath (-p). The query now always works, also when -no database file was created by udev. - -The built-in /etc/passwd /etc/group parser is removed, we always depend on -getpwnam() and getgrnam() now. One of the next releases will depend on -fnmatch() and may use getopt_long(). - -udev 097 -======== -Bugfixes and small improvements. - -udev 096 -======== -Fix path_id for recent kernels. - -udev 095 -======== -%e is finally gone. - -Added support for swapping network interface names, by temporarily -renaming the device and wait for the target name to become free. - -udev 094 -======== -The built-in MODALIAS key and substitution is removed. - -udev 093 -======== -The binary firmware helper is replaced by the usual simple -shell script. Udevsend is removed from the tree. - -udev 092 -======== -Bugfix release. - -udev 091 -======== -Some more keys require the correct use of '==' and '=' depending -on the kind of operation beeing an assignment or a match. Rules -with invalid operations are skipped and logged to syslog. Please -test with udevtest if the parsing of your rules throws errors and -fix possibly broken rules. - -udev 090 -======== -Provide "udevsettle" to wait for all current udev events to finish. -It also watches the current kernel netlink queue by comparing the -even sequence number to make sure that there are no current pending -events that have not already arrived in the daemon. - -udev 089 -======== -Fix rule to skip persistent rules for removable IDE devices, which -also skipped optical IDE drives. - -All *_id program are installed in /lib/udev/ by default now. - -No binary is stripped anymore as this should be done in the -packaging process and not at build time. - -libvolume_id is provided as a shared library now and vol_id is -linked against it. Also one of the next HAL versions will require -this library, and the HAL build process will also require the -header file to be installed. The copy of the same code in HAL will -be removed to have only a single copy left on the system. - -udev 088 -======== -Add persistent links for SCSI tapes. The rules file is renamed -to 60-persistent-storage.rules. - -Create persistent path for usb devices. Can be used for all sorts -of devices that can't be distinguished by other properties like -multiple identical keyboards and mice connected to the same box. - -Provide "udevtrigger" program to request events on coldplug. The -shell script is much too slow with thousends of devices. - -udev 087 -======== -Fix persistent disk rules to exclude removable IDE drives. - -Warn if %e, $modalias or MODALIAS is used. - -udev 086 -======== -Fix queue export, which wasn't correct for subsequent add/remove -events for the same device. - -udev 085 -======== -Fix cramfs detection on big endian. - -Make WAIT_FOR_SYSFS usable in "normal" rules and silent if the whole -device goes away. - -udev 084 -======== -If BUS== and SYSFS{}== have been used in the same rule, the sysfs -attributes were only checked at the parent device that matched the -by BUS requested subsystem. Fix it to also look at the device we -received the event for. - -Build variable CROSS has changed to CROSS_COMPILE to match the kernel -build name. - -udev 083 -======== -Fix a bug where NAME="" would prevent RUN from beeing executed. - -RUN="/bin/program" does not longer automatically add the subsystem -as the first parameter. This is from the days of /sbin/hotplug -which is dead now and it's just confusing to need to add a space at -the end of the program name to prevent this. -If you use rules that need the subsystem as the first parameter, -like the old "udev_run_hotlugd" and "udev_run_devd", add the subsystem -to the key like RUN+="/bin/program $env{SUBSYSTEM}". - -udev 082 -======== -The udev man page has moved to udev(7) as it does not describe a command -anymore. The programs udev, udevstart and udevsend are no longer installed -by default and must be copied manually, if they should be installed or -included in a package. - -Fix a bug where "ignore_device" could run earlier collected RUN keys before -the ignore rule was applied. - -More preparation for future sysfs changes. usb_id and scsi_id no longer -depend on a magic order of devices in the /devices chain. Specific devices -should be requested by their subsytem. - -This will always find the scsi parent device without depending on a specific -path position: - dev = sysfs_device_get(devpath); - dev_usb = sysfs_device_get_parent_with_subsystem(dev, "scsi"); - -The "device" link in the current sysfs layout will be automatically -_resolved_ as a parent and in the new sysfs layout it will just _be_ the -parent in the devpath. If a device is requested by it's symlink, like all -class devices in the new sysfs layout will look like, it gets automatically -resolved and substituted with the real devpath and not the symlink path. - -Note: -A similar logic must be applied to _all_ sysfs users, including -scripts, that search along parent devices in sysfs. The explicit use of -the "device" link must be avoided. With the future sysfs layout all -DEVPATH's will start with /devices/ and have a "subsystem" symlink poiting -back to the "class" or the "bus". The layout of the parent devices in -/devices is not necessarily expected to be stable across kernel releases and -searching for parents by their subsystem should make sysfs users tolerant -for changed parent chains. - -udev 081 -======== -Prepare udev to work with the experimental kernel patch, that moves -/sys/class devices to /sys/devices and /sys/block to /sys/class/block. - -Clarify BUS, ID, $id usage and fix $id behavior. This prepares for -moving the class devices to /sys/devices. - -Thanks again to Marco for help finding a hopefully nice compromise -to make %b simpler and working again. - -udev 080 -======== -Complete removal of libsysfs, replaced by simple helper functions -which are much simpler and a bit faster. The udev daemon operatesentirely -on event parameters and does not use sysfs for simple rules anymore. -Please report any new bugs/problems, that may be caused by this big -change. They will be fixed immediately. - -The enumeration format character '%e' is deprecated and will be -removed sometimes from a future udev version. It never worked correctly -outside of udevstart, so we can't use it with the new parallel -coldplug. A simple enumeration is as useless as the devfs naming -scheme, just get rid of both if you still use it. - -MODALIAS and $modalias is not needed and will be removed from one of -the next udev versions, replace it in all rules with ENV{MODALIAS} or -the sysfs "modalias" value. - -Thanks a lot to Marco for all his help on finding and fixing bugs. - -udev 079 -======== -Let scsi_id request libata drive serial numbers from page 0x80. - -Renamed etc/udev/persistent.rules to persistent-disk.rules and -added /dev/disk/by-name/* for device mapper device names. - -Removed %e from the man page. It never worked reliably outside -of udevstart and udevstart is no longer recommended to use. - -udev 078 -======== -Symlinks are now exported to the event environment. Hopefully it's no -longer needed to run udevinfo from an event process, like it was -mentioned on the hotplug list: - UDEV [1134776873.702967] add@/block/sdb - ... - DEVNAME=/dev/sdb - DEVLINKS=/dev/disk/by-id/usb-IBM_Memory_Key_0218B301030027E8 /dev/disk/by-path/usb-0218B301030027E8:0:0:0 - -udev 077 -======== -Fix a problem if udevsend is used as the hotplug handler and tries to use -syslog, which causes a "vc" event loop. 2.6.15 will make udevsend obsolete -and this kind of problems will hopefully go away soon. - -udev 076 -======== -All built-in logic to work around bad sysfs timing is removed with this -version. The need to wait for sysfs files is almost fixed with a kernel -version that doesn't work with this udev version anyway. Until we fix -the timing of the "bus" link creation, the former integrated logic should -be emulated by a rule placed before all other rules: - ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus" - -The option "udev_db" does no longer exist. All udev state will be in -/$udev_root/.udev/ now, there is no longer an option to set this -to anything else. -If the init script or something else used this value, just depend on -this hardcoded path. But remember _all_content_ of this directory is -still private to udev and can change at any time. - -Default location for rule sripts and helper programs is now: /lib/udev/. -Everything that is not useful on the commandline should go into this -directory. Some of the helpers in the extras folder are installed there -now. The rules need to be changed, to find the helpers there. - -Also /lib/udev/devices is recommended as a directory where packages or -the user can place real device nodes, which get copied over to /dev at -every boot. This should replace the various solutions with custom config -files. - -Udevsend does no longer start the udev daemon. This must be done with -the init script that prepares /dev on tmpfs and creates the initial nodes, -before starting the daemon. - -udev 075 -======== -Silent a too verbose error logging for the old hotplug.d/ dev.d/ -emulation. - -The copy of klibc is removed. A systemwide installed version of klibc -should be used to build a klibc udev now. - -udev 074 -======== -NAME="" will not create any nodes, but execute RUN keys. To completely -ignore an event the OPTION "ignore_device" should be used. - -After removal of the reorder queue, events with a TIMEOUT can be executed -without any queuing now. - -udev 073 -======== -Fixed bug in udevd, if inotify is not available. We depend on netlink -uevents now, kernels without that event source will not work with that -version of udev anymore. - -udev 072 -======== -The rule parsing happens now in the daemon once at startup, all udev -event processes inherit the already parsed rules from the daemon. -It is shipped with SUSE10.0 and reduces heavily the system load at -startup. The option to save precompiled rules and let the udev process -pick the them up is removed, as it's no longer needed. - -Kernel 2.6.15 will have symlinks at /class/input pointing to the real -device. Libsysfs is changed to "translate" the requested link into the -real device path, as it would happen with the hotplug event. Otherwise -device removal and the udev database will not work. - -Using 'make STRIPCMD=' will leave the binaries unstripped for debugging -and packaging. - -A few improvements for vol_id, the filesytem probing code. - -udev 071 -======== -Fix a stupid typo in extras/run_directory for "make install". - -scsi_id creates the temporary devnode now in /dev for usage with a -non-writable /tmp directory. - -The uevent kernel socket buffer can carry app. 50.000 events now, -let's see who can break this again. :) - -The upcoming kernel will have a new input driver core integration. -Some class devices are now symlinks to the real device. libsysfs -needs a fix for this to work correctly. Udevstart of older udev -versions will _not_ create these devices! - -udev 070 -======== -Fix a 'install' target in the Makefile, that prevents EXTRAS from -beeing installed. - -udev 069 -======== -A bunch of mostly trivial bugfixes. From now on no node name or -symlink name can contain any character than plain whitelisted ascii -characters or validated utf8 byte-streams. This is needed for the -/dev/disk/by-label/* links, because we import untrusted data and -export it to the filesystem. - -udev 068 -======== -More bugfixes. If udevd was started from the kernel, we don't -have stdin/stdout/stderr, which broke the forked tools in some -situations. - -udev 067 -======== -Bugfix. udevstart event ordering was broken for a long time. -The new run_program() uncovered it, because /dev/null was not -available while we try to run external programs. -Now udevstart should create it before we run anything. - -udev 066 -======== -Minor bugfixes and some distro rules updates. If you don't have the -persistent disk rules in /dev/disk/by-*/* on your distro, just -grab it from here. :) - -udev 065 -======== -We can use socket communication now to pass events from udev to -other programs: - RUN+="socket:/org/freedesktop/hal/udev_event" -will pass the whole udev event to the HAL daemon without the need -for a forked helper. (See ChangeLog for udevmonitor, as an example) - -udev 064 -======== -Mostly bugfixes and see ChangeLog. - -The test for the existence of an environment value should be -switched from: - ENV{KEY}=="*" to ENV{KEY}=="?*" -because "*" will not fail anymore, if the key does not exist or -is empty. - -udev 063 -======== -Bugfixes and a few tweaks described in the ChangeLog. - -udev 062 -======== -Mostly a Bugfix release. - -Added WAIT_FOR_SYSFS="<attribute>" to be able to fight against the sysfs -timing with custom rules. - -udev 061 -======== -We changed the internal rule storage format. Our large rule files took -2 MB of RAM, with the change we are down to 99kB. - -If the device-node has been created with default name and no symlink or -options are to remenber, it is not longer stored in the udevdb. HAL will -need to be updated to work correctly with that change. - -To overrride optimization flags, OPTFLAGS may be used now. - -udev 060 -======== -Bugfix release. - -udev 059 -======== -Major changes happened with this release. The goal is to take over the -complete kernel-event handling and provide a more efficient way to dispatch -kernel events. Replacing most of the current shell script logic and the -kernel forked helper with a netlink-daemon and a rule-based event handling. - -o udevd listens to netlink events now. The first valid netlink event - will make udevd ignore any message from udevsend that contains a - SEQNUM, to avoid duplicate events. The forked events can be disabled - with: - echo "" > /proc/sys/kernel/hotplug - For full support, the broken input-subsytem needs to be fixed, not to - bypass the driver core. - -o /etc/dev.d/ + /etc/hotplug.d/ directory multiplexing is completely - removed from udev itself and must be emulated by calling small - helper binaries provided in the extras folder: - make EXTRAS=extras/run_directory/ - will build udev_run_devd and udev_run_hotplugd, which can be called - from a rule if needed: - RUN+="/sbin/udev_run_hotplugd" - The recommended way to handle this is to convert all the calls from - the directories to explicit udev rules and get completely rid of the - multiplexing. (To catch a ttyUSB event, you now no longer need to - fork and exit 300 tty script instances you are not interested in, it - is just one rule that matches exactly the device.) - -o udev handles now _all_ events not just events for class and block - devices, this way it is possible to control the complete event - behavior with udev rules. Especially useful for rules like: - ACTION="add", DEVPATH="/devices/*", MODALIAS=="?*", RUN+="/sbin/modprobe $modalias" - -o As used in the modalias rule, udev supports now textual - substitution placeholder along with the usual format chars. This - needs to be documented, for now it's only visible in udev_rules_parse.c. - -o The rule keys support now more operations. This is documented in the - man page. It is possible to add values to list-keys like the SYMLINK - and RUN list with KEY+="value" and to clear the list by assigning KEY="". - Also "final"-assignments are supported by using KEY:="value", which will - prevent changing the key by any later rule. - -o kernel 2.6.12 has the "detached_state" attribute removed from - sysfs, which was used to recognize sysfs population. We switched that - to wait for the "bus" link, which is only available in kernels after 2.6.11. - Running this udev version on older kernels may cause a short delay for - some events. - -o To provide infrastructure for persistent device naming, the id programs: - scsi_id, vol_id (former udev_volume_id), and ata_id (new) are able now - to export the probed data in environment key format: - pim:~ # /sbin/ata_id --export /dev/hda - ID_MODEL=HTS726060M9AT00 - ID_SERIAL=MRH401M4G6UM9B - ID_REVISION=MH4OA6BA - - The following rules: - KERNEL="hd*[!0-9]", IMPORT="/sbin/ata_id --export $tempnode" - KERNEL="hd*[!0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_MODEL}_$env{ID_SERIAL}" - - Will create: - kay@pim:~> tree /dev/disk - /dev/disk - |-- by-id - | |-- HTS726060M9AT00_MRH401M4G6UM9B -> ../../hda - | `-- IBM-Memory_Key -> ../../sda - |-- by-label - | |-- swap -> ../../hda1 - | |-- date -> ../../sda1 - | `-- home -> ../../hda3 - `-- by-uuid - |-- 2E08712B0870F2E7 -> ../../hda3 - |-- 9352cfef-7687-47bc-a2a3-34cf136f72e1 -> ../../hda1 - |-- E845-7A89 -> ../../sda1 - `-- b2a61681-3812-4f13-a4ff-920d70604299 -> ../../hda2 - - The IMPORT= operation will import these keys in the environment and make - it available for later PROGRAM= and RUN= executed programs. The keys are - also stored in the udevdb and can be queried from there with one of the - next udev versions. - -o A few binaries are silently added to the repository, which can be used - to replay kernel events from initramfs instead of using coldplug. udevd - can be instructed now to queue-up events while the stored events from - initramfs are filled into the udevd-queue. This code is still under - development and there is no documentation now besides the code itself. - The additional binaries get compiled, but are not installed by default. - -o There is also a temporary fix for a performance problem where too many - events happen in parallel and every event needs to parse the rules. - udev can now read precompiled rules stored on disk. This is likely to be - replaced by a more elegant solution in a future udev version. - -udev 058 -======== -With kernel version 2.6.12, the sysfs file "detached_state" was removed. -Fix for libsysfs not to expect this file was added. - -udev 057 -======== -All rules are applied now, but only the first matching rule with a NAME-key -will be applied. All later rules with NAME-key are completely ignored. This -way system supplied symlinks or permissions gets applied to user-defined -naming rules. - -Note: -Please check your rules setup, if you may need to add OPTIONS="last_rule" -to some rules, to keep the old behavior. - -The rules are read on "remove"-events too. That makes is possible to match -with keys that are available on remove (KERNEL, SUBSYSTEM, ID, ENV, ...) to -instruct udev to ignore an event (OPTIONS="ignore_device"). -The new ACTION-key may be used to let a rule act only at a "remove"-event. - -The new RUN-key supports rule-based execution of programs after device-node -handling. This is meant as a general replacement for the dev.d/-directories -to give fine grained control over the execution of programs. - -The %s{}-sysfs format char replacement values are searched at any of the -devices in the device chain now, not only at the class-device. - -We support log priority levels now. The value udev_log in udev.conf is used -to determine what is printed to syslog. This makes it possible to -run a version with compiled-in debug messages in a production environment -which is sometimes needed to find a bug. -It is still possible to supress the inclusion of _any_ syslog usage with -USE_LOG=false to create the smallest possible binaries if needed. -The configured udev_log value can be overridden with the environment variable -UDEV_LOG. - -udev 056 -======== -Possible use of a system-wide klibc: - make USE_KLIBC=true KLCC=/usr/bin/klcc all -will link against an external klibc and our own version will be ignored. - -udev 055 -======== -We support an unlimited count of symlinks now. - -If USE_STATIC=true is passed to a glibc build, we link statically and use -a built-in userdb parser to resolve user and group names. - -The PLACE= key is gone. It can be replaced by an ID= for a long time, because -we walk up the chain of physical devices to find a match. - -The KEY="<value>" format supports '=', '==', '!=,' , '+=' now. This makes it -easy to skip certain attribute matches without composing rules with weird -character class negations like: - KERNEL="[!s][!c][!d]*" -this can now be replaced with: - KERNEL!="scd*" -The current simple '=' is still supported, and should work as it does today, -but existing rules should be converted if possible, to be better readable. - -We have new ENV{}== key now, to match against a maximum of 5 environment -variables. - -udevstart is its own binary again, because we don't need co carry this araound -with every forked event. |