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A second "add" event created a new enumeration with %e. Check the
udevdb first and if a matching name is already used.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
No device node or symlink can have other characters as plain
readable ascii or valid utf8. The /dev/disk/by-label/* symlinks
can no longer contain weird stuff read from untrusted sources.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Just like the IMPORT values are stored in the udev database the
exported keys are stored in the udev database. The database is also
imported on a remove event before the rules are matched. So it
is possible to do:
ACTION=="add", KERNEL=="sda", ENV{MY_DEVICE}="1234", RUN+="/bin/logger add $devpath"
ACTION=="remove", ENV{MY_DEVICE}=="1234", RUN+="/bin/logger remove $devpath"
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
This can be uses to export stuff to the event environment or
to carry a state from one rule to another, like enabling/disabling
later rules conditionally.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
If USE_DEBUG=true and udev_log="debug", all output of the forked
programs to stdout and stderr is send to syslog.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
strlcpy counts the sourec string lengt and is therefore not suitable
to copy a defined length of characters from one string to another.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
This will allow us to have whole blocks of rules to skip
conditionally. The following section creates the node "yes":
GOTO="TEST"
NAME="no"
NAME="no2", LABEL="NO"
NAME="yes", LABEL="TEST"
NAME="no3"
This cuts down our 600 rules file to 98 kb instead of 1.9 Mb memory
or file-size with precompiled rules.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Export the type of device from ata_id and scsi_id, also strip
leading and trailing whitespace and substitute consecutive
whitespace with a single underline char.
From: Hannes Reinecke <hare@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Any program can query with udevinfo for persistent device
attributes evaluated on device discovery now.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
This allows to source-in a file into the udev environment to have
the defined keys available for later processing by udev itself or
the forked helper programs.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
All the rule files can be compiled into a single file,
which can be mapped into the udev process to avoid parsing
the rules with every event.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Handle all events with rules. If udev is expected to handle hotplug.d/
the exernal helper must be called.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
SUBSYSTEM=="block", RUN="/sbin/program"
will execute the program only for block device events.
ACTION="remove", SUBSYSTEM=="block", RUN"/sbin/program"
will execute the program, if a block device is removed.
Better remove characters that are useless in a device node name.
It may be a security risk to pass any character read from e.g. a
sysfs attribute to a shell script we execute later.
Prevent the modification of the libsysfs attribute value
cache.
Clear PROGRAM result if the execution encountered an error.
