device_allocate - device_allocate file
The device_allocate file is an ASCII file that resides in the /etc/security directory. It contains mandatory access control information about each physical device. Each device is represented by a one– line entry of the form:
Represents an arbitrary ASCII string naming the physical device. This field contains no embedded white space or non-printable characters.
Represents an arbitrary ASCII string naming the generic device type. This field identifies and groups together devices of like type. This field contains no embedded white space or non-printable characters. The following types of devices are currently managed by the system: audio, sr (represents CDROM drives), st (represents tape drives), and rmdisk (removable media devices).
On systems configured with Trusted Extensions, this field stores a colon-separated (:) list of key-value pairs that describe device allocation attributes used in Trusted Extensions. Zero or more keys can be specified. The following keys are currently interpreted by Trusted Extensions systems:
Specifies the minimum label at which device can be allocated. Default value is admin_low.
Specifies the maximum label at which device can be allocated. Default value is admin_high.
Specifies the name of the zone in which device is currently allocated.
Specifies a logical grouping of devices. For example, all Sun Ray devices of all device types. There is no default class.
Specifies the X display name. This is used to identify devices associated with that X session. There is no default xdpy value.
Represents a field reserved for future use.
Represents a field that contains a comma-separated list of authorizations required to allocate the device, an asterisk (*) to indicate that the device is not allocatable, or an '@' symbol to indicate that no explicit authorization is needed to allocate the device. The default authorization is solaris.device.allocate. See auths(1).
The physical device's data clean program to be run any time the device is acted on by allocate. This ensures that unmanaged data does not remain in the physical device between uses. This field contains the filename of a program in /etc/security/lib or the full pathname of a cleanup script provided by the system administrator.
The device_allocate file is an ASCII file that resides in the /etc/security directory.
Lines in device_allocate can end with a ‘\’ to continue an entry on the next line.
Comments can also be included. A ‘#’ makes a comment of all further text until the next NEWLINE not immediately preceded by a ‘\’.
White space is allowed in any field.
The device_allocate file must be created by the system administrator before device allocation is enabled.
The device_allocate file is owned by root, with a group of sys, and a mode of 0644.
Declare that physical device st0 is a type st. st is allocatable, and the script used to clean the device after running deallocate is named /etc/security/lib/st_clean.
# scsi tape st0;\ st;\ reserved;\ reserved;\ solaris.device.allocate;\ /etc/security/lib/st_clean
Making a device allocatable means that you need to allocate and deallocate it to use it (with allocate and deallocate). If a device is not allocatable, there is an asterisk (*) in the auths field, and no one can use the device.
Contains list of allocatable devices
See attributes(7) for descriptions of the following attributes:
On systems configured with Trusted Extensions, the functionality is enabled by default. On such systems, the device_allocate file is updated automatically by the system.