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63 lines
2.5 KiB
Plaintext
63 lines
2.5 KiB
Plaintext
udev 057
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========
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All rules are applied now, but only the first matching rule with a NAME-key
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will be applied. All later rules with NAME-key are completely ignored. This
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way system supplied symlinks or permissions gets applied to user-defined
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naming rules.
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Note:
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Please check your rules setup, if you may need to add OPTIONS="last_rule"
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to some rules, to keep the old behavior.
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The rules are read on "remove"-events too. That makes is possible to match
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with keys that are available on remove (KERNEL, SUBSYSTEM, ID, ENV, ...) to
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instruct udev to ignore an event (OPTIONS="ignore_device").
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The new ACTION-key may be used to let a rule act only at a "remove"-event.
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The new RUN-key supports rule-based execution of programs after device-node
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handling. This is meant as a general replacement for the dev.d/-directories
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to give fine grained control over the execution of programs.
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The %s{}-sysfs format char replacement values are searched at any of the
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devices in the device chain now, not only at the class-device.
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We support log priority levels now. The value udev_log in udev.conf is used
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to determine what is printed to syslog. This makes it possible to
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run a version with compiled-in debug messages in a production environment
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which is sometimes needed to find a bug.
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It is still possible to supress the inclusion of _any_ syslog usage with
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USE_LOG=false to create the smallest possible binaries if needed.
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The configured udev_log value can be overridden with the environment variable
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UDEV_LOG.
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udev 056
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========
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Possible use of a system-wide klibc:
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make USE_KLIBC=true KLCC=/usr/bin/klcc all
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will link against an external klibc and our own version will be ignored.
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udev 055
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========
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We support an unlimited count of symlinks now.
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If USE_STATIC=true is passed to a glibc build, we link statically and use
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a built-in userdb parser to resolve user and group names.
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The PLACE= key is gone. It can be replaced by an ID= for a long time, cause
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we walk up the chain of physical devices to find a match.
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The KEY="<value>" format supports '=', '==', '!=,' , '+=' now. This makes it
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easy to skip certain attribute matches without composing rules with weird
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character class negations like:
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KERNEL="[!s][!c][!d]*"
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this can now be replaced with:
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KERNEL!="scd*"
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The current simple '=' is still supported, and should work as it does today,
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but existing rules should be converted if possible, to be better readable.
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We have new ENV{}== key now, to match against a maximum of 5 environment
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variables.
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udevstart is its own binary again, cause we don't need co carry this araound
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with every forked event.
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