PUTDEV(1M) Maintenance Commands PUTDEV(1M)


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(1M) and ufsrestore(1M), 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


devattr(1M), putdgrp(1M), ufsdump(1M), ufsrestore(1M), attributes(5)


April 3, 1997 PUTDEV(1M)