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di_prop_bytes(3devinfo)

di_...ytes(3DEVINFO) Device Information Library Functions di_...ytes(3DEVINFO)

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

SYNOPSIS
       cc [ flag... ] file... -ldevinfo [ library... ]
       #include <libdevinfo.h>

       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 un‐
                    signed character.

                    For di_prop_ints(), the address of a pointer to  an  inte‐
                    ger.

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

                    For di_prop_strings(), the address of pointer to a charac‐
                    ter.


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


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


       The di_prop_type() function returns the type of the property. 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 associated with boolean prop‐
                                erties.  The existence of the property defines
                                a TRUE value.


       DI_PROP_TYPE_INT         Use di_prop_ints() to access property data.


       DI_PROP_TYPE_INT64       Use di_prop_int64() to access property data.


       DI_PROP_TYPE_STRING      Use di_prop_strings() to access property data.


       DI_PROP_TYPE_BYTE        Use di_prop_bytes() to access property data.


       DI_PROP_TYPE_UNKNOWN     Use di_prop_bytes() to access  property  data.
                                Since  the  type  of  property 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, in‐
       dicating 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  er‐
       ror.


       The di_prop_devt() function returns the dev_t value associated 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(7) for descriptions of the following attributes:

       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelSafe


SEE ALSO
       di_prom_prop_lookup_bytes(3DEVINFO),   di_prop_next(3DEVINFO),  libdev‐
       info(3LIB), attributes(7)


       Writing Device Drivers in Oracle Solaris 11.4

Oracle Solaris 11.4               27 Mar 2001             di_...ytes(3DEVINFO)
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