devfsadm(1M) System Administration Commands devfsadm(1M)NAME
devfsadm, devfsadmd - administration command for /dev
SYNOPSIS
/usr/sbin/devfsadm [-C] [-c device_class] [-i driver_name]
[ -n] [-r root_dir] [-s] [-t table_file] [-v]
/usr/lib/devfsadm/devfsadmd
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
policy.
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‐
nel.
For compatibility purposes, drvconfig(1M), disks(1M), tapes(1M),
ports(1M), audlinks(1M), and devlinks(1M) are implemented as links to
devfsadm.
In addition to managing /dev, devfsadm also maintains the
path_to_inst(4) database.
OPTIONS
The following options are supported:
-C 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.
-c device_class 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.
-i driver_name Configure only the devices for the named driver,
driver_name.
-n Do not attempt to load drivers or add new nodes to
the kernel device tree.
-s Suppress any changes to /dev. This is useful with
the -v option for debugging.
-t table_file Read an alternate devlink.tab file. devfsadm nor‐
mally reads /etc/devlink.tab.
-r root_dir 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.
-v Print changes to /dev in verbose mode.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
1 An error occurred.
FILES
/devices
device nodes directory
/dev
logical symbolic links to /devices
/usr/lib/devfsadm/devfsadmd
devfsadm daemon
/dev/.devfsadm_dev.lock
update lock file
/dev/.devfsadm_daemon.lock
daemon lock file
/etc/security/device_policy
device policy file
/etc/security/extra_privs
additional device privileges
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWcsu │
└─────────────────────────────┴─────────────────────────────┘
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:
svc:/system/device/local:default
Otherwise, devfsadm is started by:
svc:/system/sysevent:default
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.
SunOS 5.10 23 Jun 2008 devfsadm(1M)
