devfsadm, devfsadmd - administration command for /dev
/usr/sbin/devfsadm [-C] [-c device_class] [-i driver_name]
[ -n] [-r root_dir] [-s] [-t table_file] [-v]
DESCRIPTIONdevfsadm(1M) maintains the /dev namespace. It replaces the previous
suite of devfs administration tools including drvconfig(1M), disks(1M),
tapes(1M), ports(1M), audlinks(1M), and devlinks(1M).
The default operation is to attempt to load every driver in the system
and attach to all possible device instances. Next, devfsadm creates
logical links to device nodes in /dev and /devices and loads the device
devfsadmd(1M) is the daemon version of devfsadm(1M). The daemon is
started during system startup and is responsible for handling both
reconfiguration boot processing and updating /dev and /devices in
response to dynamic reconfiguration event notifications from the ker‐
For compatibility purposes, drvconfig(1M), disks(1M), tapes(1M),
ports(1M), audlinks(1M), and devlinks(1M) are implemented as links to
In addition to managing /dev, devfsadm also maintains the
The following options are supported:
Cleanup mode. Prompt devfsadm to cleanup dangling
/dev links that are not normally removed. If the -c
option is also used, devfsadm only cleans up for the
listed devices' classes.
Restrict operations to devices of class
device_class. Solaris defines the following values
for device_class: disk, tape, port, audio, and
pseudo. This option might be specified more than
once to specify multiple device classes.
Configure only the devices for the named driver,
Do not attempt to load drivers or add new nodes to
the kernel device tree.
Suppress any changes to /dev. This is useful with
the -v option for debugging.
Read an alternate devlink.tab file. devfsadm nor‐
mally reads /etc/devlink.tab.
Presume that the /dev directory trees are found
under root_dir, not directly under root (/). No
other use or assumptions are made about root_dir.
Print changes to /dev in verbose mode.
The following exit values are returned:
An error occurred.
device nodes directory
logical symbolic links to /devices
update lock file
daemon lock file
device policy file
additional device privileges
SEE ALSOsvcs(1), add_drv(1M), modinfo(1M), modload(1M), modunload(1M),
rem_drv(1M), svcadm(1M), tapes(1M), path_to_inst(4), attributes(5),
privileges(5), smf(5), devfs(7FS)NOTES
This document does not constitute an API. The /devices directory might
not exist or might have different contents or interpretations in a
future release. The existence of this notice does not imply that any
other documentation that lacks this notice constitutes an API.
devfsadm no longer manages the /devices name space. See devfs(7FS).
The device configuration service is managed by the service management
facility, smf(5), under the service identifier, and can be used to
start devfsadm during reconfiguration boot by:
Otherwise, devfsadm is started by:
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using svcadm(1M). The service's
status can be queried using the svcs(1) command.
Jun 23, 2008 DEVFSADM(1M)