NAME
 sec_rgy_attr_test_and_update - Updates specified attribute instances
                                for a specified object only if a set
                                of control attribute instances match
                                the object's existing attribute instances

 SYNOPSIS

 #include <dce/sec_rgy_attr.h>

 void sec_rgy_attr_test_and_update (
         sec_rgy_handle_t context,
         sec_rgy_domain_t name_domain,
         sec_rgy_name_t name,
         unsigned32 num_to_test,
         sec_attr_t test_attrs[],
         unsigned32 num_to_write,
         sec_attr_t update_attrs[],
         signed32 *failure_index,
         error_status_t *status);

 PARAMETERS

 Input

 context
        An opaque handle bound to a registry server.  Use
        sec_rgy_site_open() to acquire a bound handle.

 name_domain
        A value of type sec_rgy_domain_t that identifies the registry
        domain in which the object specified by name resides. The valid
        values are as follows:

        sec_rgy_domain_person
                    The name identifies a principal.

        sec_rgy_domain_group
                    The name identifies a group.

        sec_rgy_domain_org
                    The name identifies an organization.

 This parameter is ignored if name is policy or replist.

 name   A character string of type sec_rgy_name_t specifying the name
        of the person, group, or organization to which the attribute
        is attached.

 num_to_test
        An unsigned 32-bit integer that specifies the number of elements
        in the test_attrs[] array.  This integer must be greater than 0.

 test_attrs[]
        An array of values of type sec_attr_t that specifies the control
        attributes.  The update takes place only if the types and values
        of the control attributes exactly match those of the attribute
        instances on the named registry object. The size of the array is
        determined by num_to_test.

 num_to_write
        A 32-bit integer that specifies the number of attribute
        instances returned in the update_attrs[] array.

 update_attrs
        An array of values of type sec_attr_t that specifies the
        attribute instances to be updated.  The size of the array is
        determined by num_to_write.

 Output

 failure_index
        In the event of an error, failure_index is a pointer to the
        element in the update_attrs[] array that caused the update to
        fail.  If the failure cannot be attributed to a specific
        attribute, the value of failure_index is -1.

 status
        A pointer to the completion status.  On successful completion,
        the routine returns error_status_ok.  Otherwise, it returns an
        error.

 DESCRIPTION

 The sec_rgy_attr_test_and_update() routine updates an attribute only
 if the set of control attributes specified in the test_attrs[] match
 attributes that already exist for the object.

 This update is an atomic operation:  if any of the control attributes
 do not match existing attributes, none of the updates are performed,
 and if an update should be performed, but the write cannot occur for
 whatever reason to any member of the update_attrs[] array, all updates
 are aborted. The attribute causing the update to fail is identified in
 failure_index. If the failure cannot be attributed to a given attribute,
 failure_index contains -1.

 If an attribute instance already exists which is identical in both
 attr_id and attr_value to an attribute specified in in_attrs[], the
 existing attribute information is overwritten by the new information.
 For multi-valued attributes, every instance with the same attr_id is
 overwritten with the supplied values.

 If an attribute instance does not exist, it is created.

 If you specify an attribute set for updating, the update applies to the
 set instance, the set itself, not the members of the set.  To update a
 member of an attribute set, supply the UUID of the set member.

 If an input attribute is associated with an update attribute trigger
 server, the attribute trigger server is invoked (by the
 sec_attr_trig_update() function) and the in_attr[] array is supplied
 as input. The output attributes from the update attribute trigger server
 are stored in the registry database and returned in the out_attrs[]
 array. Note that the update attribute trigger server may modify the
 values before they are used to update the registry database.  This is
 the only circumstance under which the values in the out_attrs[] array
 differ from the values in the in_attrs[] array.

 Permissions Required

 The sec_rgy_attr_test_and_update() routine routine requires the test
 permission and the update permission set set for each attribute type
 identified in the test_attrs[] array. These permissions are defined as
 part of the ACL manager set in the schema entry of each attribute type.

 FILES

 SYS$COMMON:[DCE$LIBRARY]SEC_RGY_ATTR.IDL
              The idl file from which dce/sec_rgy_attr.h was derived.

 ERRORS

 control attribute has changed

 unauthorized

 database read only

 server unavailable

 invalid/unsupported attribute type

 invalid encoding type

 value not unique

 trigger server unavailable

 site read only

 error_status_ok

 RELATED INFORMATION

 Functions: sec_intro
            sec_rgy_attr_update
            sec_rgy_attr_delete