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[PATCH] udev - man page update
Here is a small change to the udev man page: - clarify the use of the NAME{all_partitions} syntax and add a example to udev.rules.example - mention the empty NAME field to ignore the device - prepare a SYMLINK field for the addition of Andrey's "multiple symlinks" documentation :)
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@ -51,6 +51,10 @@ KERNEL="dm-[0-9]*", PROGRAM="/sbin/devmap_name %M %m", NAME="%k", SYMLINK="%c"
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# DRI devices always go into a subdirectory (as per the LSB spec)
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KERNEL="card*", NAME="dri/card%n"
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# create all 15 partitions of a USB flash card reader
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# note the trailing spaces in the attribute, use udevinfo(8) to examine your device
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BUS="scsi", SYSFS{model}="CF/MD ", NAME{all_partitions}="compactflash"
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# alsa devices
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KERNEL="controlC[0-9]*", NAME="snd/%k"
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KERNEL="hw[CD0-9]*", NAME="snd/%k"
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23
udev.8
23
udev.8
@ -151,16 +151,15 @@ file.
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Every line in the rules file defines the mapping between device attributes
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and the device file name. One ore more keys are specified to match a rule
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with the current device. If all keys are matching, the rule will be applied
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and the name is used for the device node. One or more optional symlinks
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targeting the node may be specified.
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and the name is used for the device node.
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.br
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If no matching rule is found, the default kernel device name is used.
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.P
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The line format is:
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Every rule consists of a list a comma separated fields:
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.sp
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.I key,[key,...] name [, symlink]
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.IR "key " ,[ "key " ,...] " name " [, " symlink" ]
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.sp
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where keys are:
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where possible fields are:
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.TP
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.B BUS
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Match the bus type of the device.
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@ -196,13 +195,19 @@ Match the returned string of the last
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call. This key may used in any following rule after a
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.B PROGRAM
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call.
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.P
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The
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.TP
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.B NAME
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field given with the attribute
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The name of the node to be created. If the name field is omitted or its
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value is empty, the device will be ignored and no node will be created.
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.br
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If given with the attribute
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.BR NAME{ all_partitions }
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will create all 15 partitions of a blockdevice.
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it will create all 15 partitions of a blockdevice.
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This may be useful for removable media devices.
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.TP
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.B SYMLINK
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The name of a symlink targeting the node. Multiple symlinks may be
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specified by separating the names by the space character.
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.P
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.RB "The " NAME " ," SYMLINK " and " PROGRAM
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fields support simple printf-like string substitution:
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