ldi_get_size(9f) [sunos man page]

ldi_get_size(9F)					   Kernel Functions for Drivers 					  ldi_get_size(9F)

NAME

       ldi_get_size - Retrieve device size

SYNOPSIS

       #include <sys/sunldi.h>

       int ldi_get_size(ldi_handle_t lh, uint64_t *sizep);

PARAMETERS

       lh	       Layered handle.

       sizep	       Pointer to the caller's unsigned 64-bit integer buffer.

DESCRIPTION

       The  ldi_get_size() function uses the layered driver handle to calculate and return a device's size. The device size is returned within the
       caller supplied buffer (*sizep). A valid layered driver handle must be obtained via the ldi_open_by_name(9F)  interface	prior  to  calling
       ldi_get_size().

RETURN VALUES

       The ldi_get_size() function returns the following values:

       DDI_SUCCESS	       The device size has been returned within the caller supplied buffer.

       DDI_FAILURE	       The device size could not be found or determined.

CONTEXT

       This function may be called from user or kernel context.

SEE ALSO

       ldi_open_by_name(9F)

       Writing Device Drivers

SunOS 5.10							    18 Mar 2004 						  ldi_get_size(9F)

ldi_get_dev(9F) 					   Kernel Functions for Drivers 					   ldi_get_dev(9F)

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.

SunOS 5.10							    3 June 2003 						   ldi_get_dev(9F)