X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Fudevd.xml;h=d335e2ec88b019e86a12ec936ec7eee3548909fe;hp=5368f281441522a217c2175fa36cbb9a72fb25d8;hb=378380397c085c3c8858d3d7017b106f36577117;hpb=8e534e2a47385253a00ffa58247d69d079b66ca7 diff --git a/udev/udevd.xml b/udev/udevd.xml index 5368f2814..d335e2ec8 100644 --- a/udev/udevd.xml +++ b/udev/udevd.xml @@ -1,119 +1,151 @@ - + -
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+ + udevd - - - udevd - udev - + udev + - - udevd - 8 - - + + udevd + 8 + + - - udevdevent managing daemon - + + udevdevent managing daemon + - - - udevd - - - - - - - - + + + udevd + + + + + + + + + - DESCRIPTION - udevd listens to kernel uevents and passes the incoming events to - udev. It ensures the correct event order and takes care, that events for child - devices are delayed until the parent event has finished the device handling. - The behavior of the running daemon can be changed with - udevadm control. - + Description + udevd listens to kernel uevents. For every event, udevd executes matching + instructions specified in udev rules. See + udev7 + . + On startup the content of the directory /lib/udev/devices + is copied to /dev. If kernel modules specify static device + nodes, these nodes are created even without a corresponding kernel device, to + allow on-demand loading of kernel modules. Matching permissions specified in udev + rules are applied to these static device nodes. + The behavior of the running daemon can be changed with + udevadm control. + - OPTIONS - - - - - Detach and run in the background. - - - - - - Run all events completely serialized. This may be useful if udev triggers - actions or loads kernel modules which cause problems and a slow but continuous - operation is needed, where no events are processed in parallel. - - - - - - - Print debug messages to stderr. - - - - - - Specify when udevd should resolve names of users and groups. - When set to (the default) names will be - resolved when the rules are parsed. When set to - names will be resolved for every event. - When set to names will never be resolved - and all devices will be owned by root. - - - - - - Print version number. - - - - - - Print help text. - - - - + Options + + + + + Detach and run in the background. + + + + + + Print debug messages to stderr. + + + + + + Limit the number of parallel executed events. + + + + + + Number of seconds to delay the execution of RUN instructions. + This might be useful when debugging system crashes during coldplug + cause by loading non-working kernel modules. + + + + + + Specify when udevd should resolve names of users and groups. + When set to (the default) names will be + resolved when the rules are parsed. When set to + names will be resolved for every event. + When set to names will never be resolved + and all devices will be owned by root. + + + + + + Print version number. + + + + + + Print help text. + + + + - ENVIRONMENT - - - - - Overrides the syslog priority specified in the config file. - - - - + Environment + + + UDEV_LOG= + + Set the logging priority. + + + + - AUTHOR - Written by Kay Sievers kay.sievers@vrfy.org. - + Kernel command line + + + udev.log-priority= + + Set the logging priority. + + + + udev.children-max= + + Limit the number of parallel executed events. + + + + udev.exec-delay= + + Number of seconds to delay the execution of RUN instructions. + This might be useful when debugging system crashes during coldplug + cause by loading non-working kernel modules. + + + + - - SEE ALSO - - udev7 - , - - udevadm8 - - - -
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+ Author + Written by Kay Sievers kay.sievers@vrfy.org. + + + + See Also + + udev7 + , + udevadm8 + + +