Manual Pages for UNIX Operating System command usage for man di_prop_type

Device Information Library Functions      di_prop_bytes(3DEVINFO)



NAME
     di_prop_bytes,  di_prop_devt,  di_prop_ints,   di_prop_name,
     di_prop_strings,  di_prop_type,  di_prop_int64 - access pro-
     perty values and attributes

SYNOPSIS
     cc [ flag... ] file... -ldevinfo [ library... ]
     #include 

     int di_prop_bytes(di_prop_t prop, uchar_t **prop_data);


     dev_t di_prop_devt(di_prop_t prop);


     int di_prop_ints(di_prop_t prop, int **prop_data);


     int di_prop_int64(di_prop_t prop, int64_t **prop_data);


     char *di_prop_name(di_prop_t prop);


     int di_prop_strings(di_prop_t prop, char **prop_data);


     int di_prop_type(di_prop_t prop);


PARAMETERS
     prop         Handle    to    a    property    returned    by
                  di_prop_next(3DEVINFO).


     prop_data    For di_prop_bytes(), the address of  a  pointer
                  to an unsigned character.

                  For di_prop_ints(), the address of a pointer to
                  an integer.

                  For di_prop_int64(), the address of  a  pointer
                  to a 64-bit integer.

                  For di_prop_strings(), the address  of  pointer
                  to a character.


DESCRIPTION
     These functions access information associated with  property
     values  and  attributes. All memory allocated by these func-
     tions is managed by the library and must not be freed by the



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Device Information Library Functions      di_prop_bytes(3DEVINFO)



     caller.


     The di_prop_bytes() function returns the property data as  a
     series of unsigned characters.


     The di_prop_devt() function returns  the  dev_t  with  which
     this property is associated. If the value is DDI_DEV_T_NONE,
     the property is not associated with any specific minor node.


     The di_prop_ints() function returns the property data  as  a
     series of integers.


     The di_prop_int64() function returns the property data as  a
     series of 64-bit integers.


     The di_prop_name() function returns the  name  of  the  pro-
     perty.


     The di_prop_strings() function returns the property data  as
     a concatenation of null-terminated strings.


     The di_prop_type() function returns the  type  of  the  pro-
     perty.  The  type  determines  the  appropriate interface to
     access property values. The following is a list of  possible
     types:

     DI_PROP_TYPE_BOOLEAN     There is no interface to call since
                              there  is  no property data associ-
                              ated with boolean  properties.  The
                              existence of the property defines a
                              TRUE value.


     DI_PROP_TYPE_INT         Use di_prop_ints() to  access  pro-
                              perty data.


     DI_PROP_TYPE_INT64       Use di_prop_int64() to access  pro-
                              perty data.


     DI_PROP_TYPE_STRING      Use  di_prop_strings()  to   access
                              property data.





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Device Information Library Functions      di_prop_bytes(3DEVINFO)



     DI_PROP_TYPE_BYTE        Use di_prop_bytes() to access  pro-
                              perty data.


     DI_PROP_TYPE_UNKNOWN     Use di_prop_bytes() to access  pro-
                              perty  data. Since the type of pro-
                              perty is  unknown,  the  caller  is
                              responsible  for  interpreting  the
                              contents of the data.


     DI_PROP_TYPE_UNDEF_IT    The property has been undefined  by
                              the  driver.  No  property  data is
                              available.


RETURN VALUES
     Upon successful completion, di_prop_bytes(), di_prop_ints(),
     di_prop_int64(), and di_prop_strings() return a non-negative
     value, indicating the number  of  entries  in  the  property
     value  buffer. See di_prom_prop_lookup_bytes(3DEVINFO) for a
     description of the return values. Otherwise, -1 is  returned
     and errno is set to indicate the error.


     The di_prop_devt() function returns the dev_t value  associ-
     ated with the property.


     The di_prop_name() function returns a pointer  to  a  string
     containing the name of the property.


     The  di_prop_type()  function  can  return  one   of   types
     described in the DESCRIPTION section.

ERRORS
     These functions will fail if:

     EINVAL    Invalid argument. For example, the  property  type
               does not match the interface.


ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:









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Device Information Library Functions      di_prop_bytes(3DEVINFO)



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | Safe                        |
    |_____________________________|_____________________________|


SEE ALSO
     di_prom_prop_lookup_bytes(3DEVINFO), di_prop_next(3DEVINFO),
     libdevinfo(3LIB), attributes(5)


     Writing Device Drivers








































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