Changeset cce8a83 in mainline for uspace/lib/c/generic/loc.c

Timestamp:

2011-08-16T17:31:34Z (13 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

45058baa

Parents:

6d605e6

Message:

loc_service_get_name() to translate service ID to name.

File:

• uspace/lib/c/generic/loc.c (modified) (1 diff)

uspace/lib/c/generic/loc.c

@@ -291 +291 @@
 }
 
+/** Get service name.
+ *
+ * Provided ID of a service, return its name.
+ *
+ * @param svc_id        Service ID
+ * @param name          Place to store pointer to new string. Caller should
+ *                      free it using free().
+ * @return              EOK on success or negative error code
+ */
+int loc_service_get_name(service_id_t svc_id, char **name)
+{
+        async_exch_t *exch;
+        char name_buf[LOC_NAME_MAXLEN + 1];
+        
+        *name = NULL;
+        memset(name_buf, 0, LOC_NAME_MAXLEN + 1);
+        exch = loc_exchange_begin_blocking(LOC_PORT_CONSUMER);
+        
+        ipc_call_t answer;
+        aid_t req = async_send_1(exch, LOC_SERVICE_GET_NAME, svc_id, &answer);
+        int rc = async_data_read_start(exch, name_buf, LOC_NAME_MAXLEN);
+        
+        loc_exchange_end(exch);
+        
+        if (rc != EOK) {
+                async_wait_for(req, NULL);
+                return rc;
+        }
+        
+        sysarg_t retval;
+        async_wait_for(req, &retval);
+        
+        if (retval != EOK)
+                return retval;
+        
+        *name = str_dup(name_buf);
+        if (*name == NULL)
+                return ENOMEM;
+        
+        return EOK;
+}
+
+
 int loc_namespace_get_id(const char *name, service_id_t *handle,
     unsigned int flags)