+/* Read function called when the `-T' command line argument is given. */
+int plugin_read_all_once (void)
+{
+ llentry_t *le;
+ read_func_t *rf;
+ int status;
+ int return_status = 0;
+
+ if (list_read == NULL)
+ {
+ NOTICE ("No read-functions are registered.");
+ return (0);
+ }
+
+ for (le = llist_head (list_read);
+ le != NULL;
+ le = le->next)
+ {
+ rf = (read_func_t *) le->value;
+ status = rf->callback ();
+ if (status != 0)
+ {
+ NOTICE ("read-function of plugin `%s' failed.",
+ le->key);
+ return_status = -1;
+ }
+ }
+
+ return (return_status);
+} /* int plugin_read_all_once */
+
+int plugin_write (const char *plugin, /* {{{ */
+ const data_set_t *ds, const value_list_t *vl)
+{
+ int (*callback) (const data_set_t *ds, const value_list_t *vl);
+ llentry_t *le;
+ int status;
+
+ if (vl == NULL)
+ return (EINVAL);
+
+ if (list_write == NULL)
+ return (ENOENT);
+
+ if (ds == NULL)
+ {
+ ds = plugin_get_ds (vl->type);
+ if (ds == NULL)
+ {
+ ERROR ("plugin_write: Unable to lookup type `%s'.", vl->type);
+ return (ENOENT);
+ }
+ }
+
+ if (plugin == NULL)
+ {
+ int success = 0;
+ int failure = 0;
+
+ le = llist_head (list_write);
+ while (le != NULL)
+ {
+ callback = le->value;
+ status = (*callback) (ds, vl);
+ if (status != 0)
+ failure++;
+ else
+ success++;
+
+ le = le->next;
+ }
+
+ if ((success == 0) && (failure != 0))
+ status = -1;
+ else
+ status = 0;
+ }
+ else /* plugin != NULL */
+ {
+ le = llist_head (list_write);
+ while (le != NULL)
+ {
+ if (strcasecmp (plugin, le->key) == 0)
+ break;
+
+ le = le->next;
+ }
+
+ if (le == NULL)
+ return (ENOENT);
+
+ callback = le->value;
+ status = (*callback) (ds, vl);
+ }
+
+ return (status);
+} /* }}} int plugin_write */
+