SuSE 11.3 - man page for hal-lock (suse section 1)
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hal-lock - lock an interface
hal-lock can be used to acquire a lock on a given interface either on a given device or
globally. For more information about both the big picture and the semantics of HAL locks,
refer to the HAL spec which can be found in /usr/share/doc/packages/hal/spec/hal-spec.html
depending on the distribution.
The following options are supported:
The name of the interface to lock.
--run Program to run if the lock was acquired.
--udi The UDI (Unique Device Identifier) of the device object. If this is ommitted, the
global lock will be tried.
Whether the lock can be held by others.
Kill the program if the acquired lock is lost. This only makes sense if you pass a
specific UDI due to the semantics of HAL locks.
Kill the program if the device is removed. This only makes sense if you pass a spe-
cific UDI due to the semantics of HAL locks.
--help Print out usage.
Print the version.
This program will attempt to grab a lock on a given interface. Unless, a specific UDI is
given, the global lock will be tried. If the lock was succesfully acquired the program
specified by the option --run will be run and upon termination this program will exit with
exit code 0. If the lock wasn't acquired or an error occured while taking the lock, this
program will exit with a non-zero exit code and the given program will not be run.
This program is only useful for launching software that doesn't use HAL at all (since such
software launched using hal-lock would be locked out itself); for example a partition ta-
ble editor part-foo may use wrapper script like this
hal-lock --interface org.freedesktop.Hal.Device.Storage --exclusive --run /path/to/part-
Please send bug reports to either the distribution or the HAL mailing list, see
http://lists.freedesktop.org/mailman/listinfo/hal on how to subscribe.
hald(8), lshal(1), hal-get-property(1), hal-set-property(1), hal-find-by-property(1), hal-
Written by David Zeuthen <email@example.com> with a lot of help from many others.
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