OSF DCE Application Development Guide--Core Components

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OSF DCE Application Development Guide—Core Components

int num_attr, str_size;

sec_attr_enc_str_array_t *attr_array;

dced_binding_create(dced_c_service_hostdata,

dced_c_binding_syntax_default,

&dced_bh,

&status);

/*Create Entry Data */

uuid_create(&(entry.id), &status);

entry.name = (dced_string_t)("NEWERprinter");

entry.description = (dced_string_t)("Configuration for a new printer.");

entry.storage_tag = (dced_string_t)("/etc/NEWprinter");

/* Create the Attributes, one for this example */

data.count = 1;

num_attr = 1;

data.list = (sec_attr_t *)malloc( data.count * sizeof(sec_attr_t) );

(data.list)->attr_id = dced_g_uuid_fileattr;

(data.list)->attr_value.attr_encoding = sec_attr_enc_printstring_array;

str_size = sizeof(sec_attr_enc_str_array_t) +

num_attr * sizeof(sec_attr_enc_printstring_p_t);

attr_array = (sec_attr_enc_str_array_t *)malloc(str_size);

(data.list)->attr_value.tagged_union.string_array = attr_array;

attr_array->num_strings = num_attr;

attr_array->strings[0] = (dced_string_t)("New printer configuration data");

dced_hostdata_create(dced_bh, &entry, &data, &status);

dced_binding_free( dced_bh, &status);

The description of this example is as follows:

dced_binding_create()

This routine creates a dced binding to a dced service. The binding

handle created is used in all subsequent calls to appropriate dced API

routines. By using the dced_c_server_hostdata value for the ﬁrst

parameter, we are using the hostdata service on the local host.

Create Entry Data

Prior to creating a hostdata entry, we have to set its values. These

include the name and UUID that dced will use to identify the new data, a

description of the entry, and a ﬁlename with the full pathname of where

the actual data will reside.

Create the Attributes

The data stored is of type sec_attr_t. This data type is a very ﬂexible

one that can store many different kinds of data. In this example, we set

the ﬁle to have one attribute, printable string information. This example

has only one string of data. You can also establish binary data for the

ﬁle.

dced_hostdata_create()

This routine takes the binding handle, entry, and new data as input; it

creates the ﬁle with the new data and returns a status code.

If the printer conﬁguration ﬁle already exists on the host, but you want to

now make it accessible to dced, use the dce_entry_add() routine

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