Manual Pages for UNIX Operating System command usage for man ldi_get_devid

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 

     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.






SunOS 5.11          Last change: 3 June 2003                    1






Kernel Functions for Drivers                      ldi_get_dev(9F)



     The ldi_get_devid() function retrieves a devid for the  dev-
     ice  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 param-
     eter. 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 5.11          Last change: 3 June 2003                    2