Hi Ioana
+/**
+ * dprc_get_connection() - Get connected endpoint and link status if connection
+ * exists.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @endpoint1: Endpoint 1 configuration parameters
+ * @endpoint2: Returned endpoint 2 configuration parameters
+ * @state: Returned link state:
+ * 1 - link is up;
+ * 0 - link is down;
+ * -1 - no connection (endpoint2 information is irrelevant)
+ *
+ * Return: '0' on Success; -ENAVAIL if connection does not exist.
#define ENAVAIL 119 /* No XENIX semaphores available */
This is not a semaphore.
How about
#define ENOTCONN 107 /* Transport endpoint is not connected */
Andrew