PROP_DATA(3)

NAME
prop_data, prop_data_create_data, prop_data_create_data_nocopy, prop_data_copy, prop_data_size, prop_data_data, prop_data_data_nocopy, prop_data_equals, prop_data_equals_data - opaque data value property object

LIBRARY
libprop

SYNOPSIS
#include <prop/proplib.h>
prop_data_t
prop_data_create_data(const void *blob, size_t len);
prop_data_t
prop_data_create_data_nocopy(const void *blob, size_t len);
prop_data_t
prop_data_copy(prop_data_t data);
void *
prop_data_data(prop_data_t data);
const void *
prop_data_data_nocopy(prop_data_t data);
boolean_t
prop_data_equals(prop_data_t dat1, prop_data_t dat2);
boolean_t
prop_data_equals_data(prop_data_t data, const void *blob, size_t len);

DESCRIPTION
The prop_data family of functions operate on an opaque data value property object type.

prop_data_create_data(const void *blob, size_t len)
    Create a data object that contains a copy of blob with size len.

prop_data_create_data_nocopy(const void *blob, size_t len)
    Create a data object that contains a reference to blob with size len.

prop_data_copy(prop_data_t data)
    Copy a data object. If the the data object being copied is an external data reference, then the copy also references the same external data.

prop_data_size(prop_data_t data)
    Returns the size of the data object.

prop_data_data(prop_data_t data)
    Returns a copy of the data object's contents. The caller is responsible for freeing the returned buffer.

    In user space, the buffer is allocated using malloc(3). In the kernel, the buffer is allocated using malloc(9) using the malloc type M_TEMP.

prop_data_data_nocopy(prop_data_t data)
    Returns an immutable reference to the contents of the data object.

prop_data_equals(prop_data_t dat1, prop_data_t dat2)
    Returns TRUE if the two data objects are equivalent.

prop_data_equals_data(prop_data_t data, const void *blob, size_t len)
    Returns TRUE if the data object's value is equivalent to blob with size len.

SEE ALSO
prop_array(3), prop_bool(3), prop_dictionary(3), prop_number(3), prop_object(3), prop_string(3), proplib(3)

HISTORY
The proplib property container object library first appeared in NetBSD 4.0.