devfsadm(1M)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | FILES | ATTRIBUTES | SEE ALSO | NOTES

NAME

devfsadm, devfsadmd– administration command for /dev and /devices

SYNOPSIS

/usr/sbin/devfsadm [-C] [-c device_class] [-i driver_name] [ -n] [-r root_dir] [-s] [-t table_file] [-v]
/usr/lib/devfsadm/devfsadmd

DESCRIPTION

devfsadm(1M) maintains the /dev and /devices namespaces. 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. devfsadm then creates device special files in /devices and logical links in /dev.

devfsadmd(1M) is the daemon version of devfsadm(1M). The daemon is started by the /etc/rc* scripts 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 kernel.

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 and /devices, devfsadm also maintains the path_to_inst(4) database.

OPTIONS

The following options are supported:

-C

Cleanup mode. Prompts devfsadm to invoke cleanup routines that are not normally invoked to remove dangling logical links. If -c 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 may 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 or /devices. This is useful with the -v option for debugging.

-t table_file

Read an alternate devlink.tab file. devfsadm normally reads /etc/devlink.tab.

-r root_dir

Presume that the /dev and /devices 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 and /devices 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

/etc/init.d/devfsadm

daemon start/stop script

/etc/rcS.d/S50devfsadm

link to init.d script

/etc/rc0.d/K83devfsadm

link to init.d script

/dev/.devfsadm_dev.lock

update lock file

/dev/.devfsadm_daemon.lock

daemon lock file

ATTRIBUTES

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

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWcsu

SEE ALSO

add_drv(1M), devlinks(1M), disks(1M), drvconfig(1M), modinfo(1M), modload(1M), modunload(1M), ports(1M), tapes(1M), path_to_inst(4), attributes(5)

NOTES

This document does not constitute an API. /etc/minor_perm, /etc/name_to_major, /etc/driver_classes, and /devices may not exist or may 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.

SunOS 5.8  Last Revised 7 Aug 2000

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | FILES | ATTRIBUTES | SEE ALSO | NOTES