PUTDEV(1M)PUTDEV(1M)NAMEputdev - edits device table
SYNOPSISputdev-a alias [attribute=value [...]]
putdev-m device attribute=value [attribute = value [...]]
putdev-d device [attribute [...]]
DESCRIPTIONputdev 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 appli‐
cations 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 charac‐
ters 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 combi‐
nation 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 associ‐
ated 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 data‐
base.)
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 com‐
mand. 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 sys‐
tem 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 ALSOdevattr(1M), putdgrp(1M), ufsdump(1M), ufsrestore(1M), attributes(5)
Apr 3, 1997 PUTDEV(1M)
