hald(1m) [opensolaris man page]

hald(1M)						  System Administration Commands						  hald(1M)

NAME

       hald - daemon that supports hardware abstraction layer

SYNOPSIS

       /usr/lib/hal/hald  [--daemon={yes | no}]] [--help] [--use-syslog]
	[--verbose={yes | no}] [--version]

DESCRIPTION

       The  hald  daemon  supports the recognition of hardware changes for devices that conform to the Hardware Abstraction Layer (HAL) specifica-
       tion.

       The enabling and disabling of hald can be performed through the service management facility (SMF) (see smf(5)). hald is managed	using  the
       fault management resource identifier (FMRI) svc:/system/hal. Options can be specified as SMF properties. See EXAMPLES.

OPTIONS

       The following options are supported:

       --daemon        Run as a daemon.

       --help	       Display usage information and exit.

       --use-syslog    Display debug messages to syslog instead of stderr. Use this option to record debug messages if HAL runs as daemon.

       --verbose       Display debug information.

       --version       Display version information and exit.

EXAMPLES

       Example 1 Specifying a Property

       The following svccfg(1M) command specifies the --verbose option.

	 example# svccfg
	 svc:> select hal
	 svc:/system/hal> listprop hal/*
	 hal/verbose	      boolean  false
	 hal/use_syslog       boolean  false
	 svc:/system/hal> setprop hal/verbose=true
	 svc:/system/hal> exit

FILES

       /usr/lib/hal    HAL-related files

       /etc/hal/fdi    Device information files

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWhalr			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       svccfg(1M), attributes(5), hal(5), smf(5)

SunOS 5.11							    2 Jul 2008								  hald(1M)

HALD(8) 						      System Manager's Manual							   HALD(8)

NAME

       hald - HAL daemon

SYNOPSIS

       hald [options]

DESCRIPTION

       hald  is  a  daemon  that maintains a database of the devices connected to the system system in real-time. The daemon connects to the D-Bus
       system message bus to provide an API that applications can use to discover, monitor and invoke operations on devices. For more  information
       about  both the big picture and specific API details, refer to the HAL spec which can be found in /usr/share/doc/hal-doc/spec/hal-spec.html
       depending on the distribution.

OPTIONS

       The following options are supported:

       --daemon=yes|no
	      Specify whether to run in the foreground or the background.

       --verbose=yes|no
	      Enable verbose debug output.

       --use-syslog
	      Enable logging of debug output to the syslog instead of stderr. Use this option only together with --verbose.

       --help Print out usage.

       --version
	      Print the version of the daemon and exit.

BUGS AND DEBUGGING

       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.

       First,  to  obtain  useful debug traces you will need to have debuginfo packages installed. On a Fedora system this is in the hal-debuginfo
       package and can be installed via the yum update program.

       Second, shut down the existing hald daemon instance; on a Fedora system this is achieved by

       /etc/init.d/haldaemon stop

       After having shut down the daemon, you might want to run

       pkill hald

       to ensure that all the helper processe of hald are killed too. To start the HAL daemon, use

       /usr/sbin/hald --daemon=no --verbose=yes

       If the daemon crashes, you can start it under a debugger via

       gdb /usr/sbin/hald

       and then typing

       run --daemon=no --verbose=yes

       at the (gdb) prompt. To capture a back trace, use the bt command and attach this to the bug report.

       Please also attach the output of lshal(1) in the bug report if possible (it's not possible if the hald daemon crashed). If  the	nature	of
       the bug has to do with hotplugging, attach two outputs of lshal(1) - one before the device hotplug event and one after.

SEE ALSO

       udev(7),  dbus-daemon(1),  lshal(1),  hal-set-property(1), hal-get-property(1), hal-find-by-property(1), hal-find-by-capability(1), hal-is-
       caller-locked-out(1)

AUTHOR

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

																	   HALD(8)