NAME

ddi_create_minor_node - create a minor node for this device

SYNOPSIS

#include <sys/stat.h>

#include <sys/sunddi.h>

int ddi_create_minor_node(dev_info_t * dip, char * name,

        int spec_type, int minor_num, char * node_type,
        int is_clone);

ARGUMENTS

dip

A pointer to the device's dev_info structure.

name

The name of this particular minor device.

spec_type

S_IFCHR or S_IFBLK for character or block minor devices respectively.

minor_num

The minor number for this particular minor device.

node_type

Any string that uniquely identifies the type of node. The following predefined node types are provided with this release:

DDI_NT_SERIAL

For serial ports

DDI_NT_SERIAL_MB

For on board serial ports

DDI_NT_SERIAL_DO

For dial out ports

DDI_NT_SERIAL_MB_DO

For on board dial out ports

DDI_NT_BLOCK

For hard disks

DDI_NT_BLOCK_CHAN

For hard disks with channel or target

numbers

DDI_NT_CD

For CDROM drives

DDI_NT_CD_CHAN

For CDROM drives with channel or target

numbers

DDI_NT_FD

For floppy disks

DDI_NT_TAPE

For tape drives

DDI_NT_NET

For network devices

DDI_NT_DISPLAY

For display devices

DDI_PSEUDO

For pseudo devices

is_clone

If the device is a clone device then this flag is set to CLONE_DEV else it is set to 0.

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

DESCRIPTION

ddi_create_minor_node( ) provides the necessary information to enable the system to create the /dev and /devices hierarchies. The name is used to create the minor name of the block or character special file under the /devices hierarchy. At sign (@), slash (/), and space are not allowed. The spec_type specifies whether this is a block or character device. The minor_num is the minor number for the device.

The node_type is used to create the names in the /dev hierarchy that refers to the names in the /devices hierarchy. See disks(1M), ports(1M), tapes(1M), devlinks(1M). Finally is_clone determines if this is a clone device or not.

RETURN VALUES

ddi_create_minor_node( ) returns:

DDI_SUCCESS

if it was able to allocate memory, create the minor data structure, and place it into the linked list of minor devices for this driver.

DDI_FAILURE

if minor node creation failed.

EXAMPLES

The following example creates a data structure describing a minor device called foo which has a minor number of 0. It is of type DDI_NT_BLOCK (a block device) and it is not a clone device.

ddi_create_minor_node(dip, "foo", S_IFBLK, 0, DDI_NT_BLOCK, 0);

SEE ALSO

add_drv(1M), devlinks(1M), disks(1M), drvconfig(1M), ports(1M), tapes(1M), attach(9E), ddi_remove_minor_node(9F)

Writing Device Drivers