hal-lock man page on Mandriva

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HAL-LOCK(1)							   HAL-LOCK(1)

NAME
       hal-lock - lock an interface

SYNOPSIS
       hal-lock [options]

DESCRIPTION
       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  pic‐
       ture and the semantics of HAL locks, refer to the HAL spec which can be
       found in /usr/share/doc/hal/spec/hal-spec.html depending on the distri‐
       bution.

OPTIONS
       The following options are supported:

       --interface
	      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.

       --exclusive
	      Whether the lock can be held by others.

       --exit-with-lock
	      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.

       --exit-with-dev
	      Kill the program if the device is removed. This only makes sense
	      if you pass a specific UDI due to the semantics of HAL locks.

       --help Print out usage.

       --version
	      Print the version.

RETURN VALUE
       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.

NOTES
       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 table editor part-foo may use wrapper
       script like this

       hal-lock	 --interface  org.freedesktop.Hal.Device.Storage   --exclusive
       --run /path/to/part-foo-program

BUGS
       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.

SEE ALSO
       hald(8),	 lshal(1), hal-get-property(1), hal-set-property(1), hal-find-
       by-property(1), hal-find-by-capability(1)

AUTHOR
       Written by David Zeuthen <david@fubar.dk> with a lot of help from  many
       others.

								   HAL-LOCK(1)
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