OSF DCE Application Development Guide--Core Components

DCE Host Services

Set Up service_t Structures for Each Interface

Each service that the server supports is represented by a

service_t data structure that contains the interface

speciﬁcation, among other things. In this example the client

stub for the interface was compiled with the program so that

the interface speciﬁcation (greetif_v1_0_c_ifspec) could be

obtained without building the structure from scratch.

Set Up a server_ﬁxedattr_t Structure

Other ﬁxed attributes required for all servers describe how

the server can start, the program name and pathname for the

server so that dced knows which program to start, and the

program’s arguments, among other things.

dced_server_create()

This routine uses the ﬁlled-in server_t structure to create a

srvrconf entry for dced. The data is stored in memory for

quick access whenever the server is started.

dced_binding_free()

Each call to the dced_binding_create() routine requires a

corresponding call to dced_binding_free() to release the

binding resources allocated.

2.6.2.2 Modifying a Server’s Conﬁguration Attributes

The data for conﬁguring servers includes arrays of attributes. For ﬂexibility, dced is

implemented using the extensible and dynamic data structures developed for the DCE

security registry attributes. This extended registry attribute (ERA) schema gives vendors

the ﬂexibility to modify the attributes appropriate for conﬁguring servers on various

systems. The use and modiﬁcation of these data structures are described in Chapter 28.

Applications commonly use dced_server_modify_attributes() after the

dced_server_create() routine to change the default conﬁguration attributes (the

attributes ﬁeld of a server_t structure) for a remote server. A dced_attr_list_t data

structure is input that contains an array of sec_attr_t data structures and a count of the

number in the array.

2.6.2.3 Deleting a DCE Server

Management applications use dced_server_delete( ) to delete a server’s conﬁguration

data and entry in its hosts dced. Although this does not delete the actual server program

from the host, it removes it from DCE control.

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