ddi_create_minor_node(9F)

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);

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

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.

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);

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