man pages section 9: DDI and DKI Kernel Functions

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Updated: July 2014
 
 

csx_RemoveDeviceNode(9F)

Name

csx_MakeDeviceNode, csx_RemoveDeviceNode - create and remove minor nodes on behalf of the client

Synopsis

#include <sys/pccard.h> 

int32_t csx_MakeDeviceNode(client_handle_t ch, make_device_node_t *dn);
int32_t csx_RemoveDeviceNode(client_handle_t ch, remove_device_node_t *dn);

Interface Level

Solaris DDI Specific (Solaris DDI)

Parameters

ch

Client handle returned from csx_RegisterClient(9F).

dn

Pointer to a make_device_node_t or remove_device_node_t structure.

Description

csx_MakeDeviceNode() and csx_RemoveDeviceNode() are Solaris-specific extensions to allow the client to request that device nodes in the filesystem are created or removed, respectively, on its behalf.

Structure Members

The structure members of make_device_node_t are:


uint32_t        Action;         /* device operation */
uint32_t        NumDevNodes;    /* number of nodes to create */
devnode_desc_t  *devnode_desc;  /* description of device nodes */

The structure members of remove_device_node_t are:


uint32_t       Action;          /* device operation */
uint32_t       NumDevNodes;     /* number of nodes to remove */
devnode_desc_t *devnode_desc;   /* description of device nodes */

The structure members of devnode_desc_t are:


char           *name;           /* device node path and name */
int32_t        spec_type;       /* device special type (block or char) */
int32_t        minor_num;       /* device node minor number */
char           *node_type;      /* device node type */

The Action field is used to specify the operation that csx_MakeDeviceNode() and csx_RemoveDeviceNode() should perform.

The following Action values are defined for csx_MakeDeviceNode():

CREATE_DEVICE_NODE

Create NumDevNodes minor nodes

The following Action values are defined for csx_RemoveDeviceNode():

REMOVE_DEVICE_NODE

Remove NumDevNodes minor nodes

REMOVE_ALL_DEVICE_NODES

Remove all minor nodes for this client

For csx_MakeDeviceNode(), if the Action field is:

CREATE_DEVICE_NODE

The NumDevNodes field must be set to the number of minor devices to create, and the client must allocate the quantity of devnode_desc_t structures specified by NumDevNodes and fill out the fields in the devnode_desc_t structure with the appropriate minor node information. The meanings of the fields in the devnode_desc_t structure are identical to the parameters of the same name to the ddi_create_minor_node(9F) DDI function.

For csx_RemoveDeviceNode(), if the Action field is:

REMOVE_DEVICE_NODE

The NumDevNodes field must be set to the number of minor devices to remove, and the client must allocate the quantity of devnode_desc_t structures specified by NumDevNodes and fill out the fields in the devnode_desc_t structure with the appropriate minor node information. The meanings of the fields in the devnode_desc_t structure are identical to the parameters of the same name to the ddi_remove_minor_node(9F) DDI function.

REMOVE_ALL_DEVICE_NODES

The NumDevNodes field must be set to 0 and the devnode_desc_t structure pointer must be set to NULL. All device nodes for this client will be removed from the filesystem.

Return Values

CS_SUCCESS

Successful operation.

CS_BAD_HANDLE

Client handle is invalid.

CS_BAD_ATTRIBUTE

The value of one or more arguments is invalid.

CS_BAD_ARGS

Action is invalid.

CS_OUT_OF_RESOURCE

Unable to create or remove device node.

CS_UNSUPPORTED_FUNCTION

No PCMCIA hardware installed.

Context

These functions may be called from user or kernel context.

See Also

csx_RegisterClient(9F), ddi_create_minor_node(9F), ddi_remove_minor_node(9F)

PC Card 95 Standard, PCMCIA/JEIDA