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NAME

ldi_get_dev, ldi_get_otyp, ldi_get_devid, ldi_get_minor_name - Extract information from a layered handle 
 

SYNOPSIS

#include <sys/sunldi.h> 

int ldi_get_dev(ldi_handle_t lh, dev_t *devp);

int ldi_get_otyp(ldi_handle_t lh, int *otyp);

int ldi_get_devid(ldi_handle_t lh, ddi_devid_t *devid);

int ldi_get_minor_name(ldi_handle_t lh, char **minor_name);

PARAMETERS

lh

Layered handle

otyp

Indicates on which interface the driver was opened. Valid settings are:

OTYP_BLK

Open device block interface.

OTYP_CHR

Open device character interface.

devp

Pointer to a device number.

devid

Device ID.

minor_name

Minor device node name.

DESCRIPTION

The ldi_get_dev() function retrieves the dev_t associated with a layered handle.

The ldi_get_otyp() retrieves the open flag that was used to open the device associated with the layered handle.

The ldi_get_devid() function retrieves a devid for the device associated with the layered handle. The caller should use ddi_devid_free() to free the devid when done with it.

The ldi_get_minor_name() function retrieves the name of the minor node opened for the device associated with the layered handle. ldi_get_minor_name() allocates a buffer containing the minor node name and returns it via the minor_name parameter. The caller should use kmem_free() to release the buffer when done with it.  

RETURN VALUES

The ldi_get_dev(), ldi_get_otyp(), ldi_get_devid(), and ldi_get_devid() functions return 0 upon success.

In case of an error, the following values may be returned:

EINVAL

Invalid input parameters.

ENOTSUP

The operation is not supported for this device.

CONTEXT

These functions may be called from user or kernel context.

Index

NAME

SYNOPSIS

PARAMETERS

DESCRIPTION

RETURN VALUES

CONTEXT

Партнёры:

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