PUTDEV(8) Maintenance Commands and Procedures PUTDEV(8)

NAME

putdev - edits device table

SYNOPSIS

putdev -a alias [attribute=value [...]]


putdev -m device attribute=value [attribute = value [...]]


putdev -d device [attribute [...]]

DESCRIPTION

putdev adds a new device to the device table, modifies an existing
device description or removes a device entry from the table. The
first synopsis is used to add a device. The second synopsis is used
to modify existing entries by adding or changing attributes. If a
specified attribute is not defined, this option adds that attribute
to the device definition. If a specified attribute is already
defined, it modifies the attribute definition. The third synopsis is
used to delete either an entire device entry or, if the attribute
argument is used, to delete an attribute assignment for a device.

OPTIONS

The following options are supported:

-a
Add a device to the device table using the specified
attributes. The device must be referenced by its alias.


-d
Remove a device from the device table, when executed without
the attributes argument. Used with the attribute argument, it
deletes the given attribute specification for device from the
table.


-m
Modify a device entry in the device table. If an entry already
exists, it adds any specified attributes that are not defined.
It also modifies any attributes which already have a value
with the value specified by this command.

OPERANDS

The following operands are supported:

alias
Designates the alias of the device to be added.


attribute
Designates a device attribute to be added, modified, or
deleted. Can be any of the device attributes described
under DEVICE ATTRIBUTES except alias. This prevents an
accidental modification or deletion of a device's alias
from the table.


device
Designates the pathname or alias of the device whose
attribute is to be added, modified, or removed.


value
Designates the value to be assigned to a device's
attribute.

DEVICE ATTRIBUTES

The following list shows the standard device attributes, used by
applications such as ufsdump(8) and ufsrestore(8), which can be
defined for a device. You are not limited to this list, you can
define any attribute you like.

alias
The unique name by which a device is known. No two
devices in the database may share the same alias name.
The name is limited in length to 14 characters and
should contain only alphanumeric characters and the
following special characters if they are escaped with a
backslash: underscore ( _ ), dollar sign ($), hyphen
(-), and period (.).


bdevice
The pathname to the block special device node associated
with the device, if any. The associated major/minor
combination should be unique within the database and
should match that associated with the cdevice field, if
any. (It is the administrator's responsibility to
ensure that these major/minor numbers are unique in the
database.)


capacity
The capacity of the device or of the typical volume, if
removable.


cdevice
The pathname to the character special device node
associated with the device, if any. The associated
major/minor combination should be unique within the
database and should match that associated with the
bdevice field, if any. (It is the administrator's
responsibility to ensure that these major/minor numbers
are unique in the database.)


cyl
Used by the command specified in the mkfscmd attribute.


desc
A description of any instance of a volume associated
with this device (such as floppy diskette).


dpartlist
The list of disk partitions associated with this device.
Used only if type=disk. The list should contain device
aliases, each of which must have type=dpart.


dparttype
The type of disk partition represented by this device.
Used only if type=dpart. It should be either fs (for
file system) or dp (for data partition).


erasecmd
The command string that, when executed, erases the
device.


fmtcmd
The command string that, when executed, formats the
device.


fsname
The file system name on the file system administered on
this partition, as supplied to the /usr/sbin/labelit
command. This attribute is specified only if type=dpart
and dparttype=fs.


gap
Used by the command specified in the mkfscmd attribute.


mkfscmd
The command string that, when executed, places a file
system on a previously formatted device.


mountpt
The default mount point to use for the device. Used only
if the device is mountable. For disk partitions where
type=dpart and dparttype=fs, this attribute should
specify the location where the partition is normally
mounted.


nblocks
The number of blocks in the file system administered on
this partition. Used only if type=dpart and
dparttype=fs.


ninodes
The number of inodes in the file system administered on
this partition. Used only if type=dpart and
dparttype=fs.


norewind
The name of the character special device node that
allows access to the serial device without rewinding
when the device is closed.


pathname
Defines the pathname to an i-node describing the device
(used for non-block or character device pathnames, such
as directories).


type
A token that represents inherent qualities of the
device. Standard types include: 9-track, ctape, disk,
directory, diskette, dpart, and qtape.


volname
The volume name on the file system administered on this
partition, as supplied to the /usr/sbin/labelit command.
Used only if type=dpart and dparttype=fs.


volume
A text string used to describe any instance of a volume
associated with this device. This attribute should not
be defined for devices which are not removable.

EXIT STATUS

The following exit values are returned:

0
Successful completion.


1
Command syntax was incorrect, an invalid option was used, or an
internal error occurred.


2
The device table could not be opened for reading, or a new
device table could not be created.


3
If executed with the -a option, indicates that an entry in the
device table with the alias alias already exits. If executed
with the -m or -d options, indicates that no entry exists for
device device.


4
Indicates that -d was requested and one or more of the
specified attributes were not defined for the device.

FILES

/etc/device.tab

SEE ALSO

attributes(7), devattr(8), putdgrp(8), ufsdump(8), ufsrestore(8)


April 3, 1997 PUTDEV(8)