checkpoint

lib/isc/include/isc/result.h

@@ -23,7 +23,9 @@ typedef unsigned int isc_result_t;
 #define ISC_R_TASKSHUTDOWN		16	/* task was shut down */
 #define ISC_R_LOCKBUSY			17
 #define ISC_R_EXISTS			18
-#define ISC_R_LASTENTRY			18	/* last entry in the list */
+#define ISC_R_TOOSMALL			19	/* buffer is too small */
+#define ISC_R_CANCELED			20
+#define ISC_R_LASTENTRY			20	/* last entry in the list */
 
 #define ISC_R_UNEXPECTED		0xFFFFFFFFL
 

lib/isc/include/isc/socket.h

@@ -1,4 +1,4 @@
-/* $Id: socket.h,v 1.8 1998/12/01 17:58:34 explorer Exp $ */
+/* $Id: socket.h,v 1.9 1998/12/01 23:59:39 explorer Exp $ */
 
 #ifndef ISC_SOCKET_H
 #define ISC_SOCKET_H 1
@@ -153,46 +153,56 @@ isc_socket_create(isc_socketmgr_t manager,
  *	ISC_R_UNEXPECTED
  */
 
+int
+isc_socket_cancel(isc_socket_t socket, isc_task_t task,
+		  int how);
+/*
+ * Cancel pending I/O of the type specified by "how".
+ *
+ * Note: if "task" is NULL, then the cancel applies to all tasks using the
+ * socket.
+ *
+ * Requires:
+ *
+ *	"socket" is a valid socket
+ *
+ *	"task" is NULL or a valid task
+ *
+ * "how" is a bitmask describing the type of cancelation to perform.
+ * The type ISC_SOCKCANCEL_ALL will cancel all pending I/O on this
+ * socket.
+ *
+ * ISC_SOCKCANCEL_RECV:
+ *	Cancel pending isc_socket_recv() calls.
+ *
+ * ISC_SOCKCANCEL_SEND:
+ *	Cancel pending isc_socket_send() and isc_socket_sendto() calls.
+ *
+ * ISC_SOCKCANCEL_
+ */
 
 void 
-isc_socket_shutdown(isc_socket_t socket, isc_task_t task,
-		    isc_socketshutdown_t how);
+isc_socket_shutdown(isc_socket_t socket, isc_socketshutdown_t how);
 /*
  * Shutdown 'socket' according to 'how'.
  *
- * Note: if 'task' is NULL, then the shutdown applies to all tasks using the
- * socket.
- *
  * Requires:
  *
  *	'socket' is a valid socket.
  *
  *	'task' is NULL or is a valid task.
  *
- * Ensures:
- *
  *	If 'how' is 'isc_sockshut_reading' or 'isc_sockshut_all' then
  *
- *		Any pending read completion events for the task are
- *		removed from the task's event queue.
- *
- *		No further read completion events will be delivered to the
- *		task.
+ *		The read queue must be empty.
  *
  *		No further read requests may be made.
  *
  *	If 'how' is 'isc_sockshut_writing' or 'isc_sockshut_all' then
  *
- *		Any pending write completion events for the task are
- *		removed from the task's event queue.
- *
- *		No further write completion events will be delivered to the
- *		task.
+ *		The write queue must be empty.
  *
  *		No further write requests may be made.
- *
- *		If 'socket' is a TCP socket, then when the last currently
- *		pending write completes, TCP FIN will sent to the remote peer.
  */
 
 void
@@ -357,8 +367,9 @@ isc_socket_getpeername(isc_socket_t socket, struct isc_sockaddr *addressp,
  *
  * Returns:
  *
- *	Success
- *	Address buffer too small
+ *	ISC_R_SUCCESS
+ *	ISC_R_TOOSMALL
+ *	ISC_R_UNEXPECTED
  */
 
 isc_result_t
@@ -375,8 +386,9 @@ isc_socket_getsockname(isc_socket_t socket, struct isc_sockaddr *addressp,
  *
  * Returns:
  *
- *	Success
- *	Address buffer too small
+ *	ISC_R_SUCCESS
+ *	ISC_R_TOOSMALL
+ *	ISC_R_UNEXPECTED
  */
 
 isc_result_t

lib/isc/result.c

@@ -21,6 +21,8 @@ static char *text_table[ISC_R_LASTENTRY + 1] = {
 	"task was shut down",			/* 16 */
 	"lock busy",				/* 17 */
 	"already exists",			/* 18 */
+	"buffer too small",			/* 19 */
+	"operation canceled",			/* 20 */
 };
 
 char *

lib/isc/unix/socket.c

@@ -1,4 +1,4 @@
-/* $Id: socket.c,v 1.13 1998/12/01 21:39:00 explorer Exp $ */
+/* $Id: socket.c,v 1.14 1998/12/01 23:59:39 explorer Exp $ */
 
 #include "attribute.h"
 
@@ -110,7 +110,7 @@ struct isc_socket {
 	isc_socket_intev_t		wiev;
 	isc_socket_connintev_t		ciev;
 	struct isc_sockaddr		address;
-	unsigned int			addrlength;
+	int				addrlength;
 };
 
 #define SOCKET_MANAGER_MAGIC		0x494f6d67U	/* IOmg */
@@ -1983,3 +1983,44 @@ internal_connect(isc_task_t task, isc_event_t ev)
 
 	return (0);
 }
+
+/*
+ * Locking should not be necessary
+ */
+isc_result_t
+isc_socket_getpeername(isc_socket_t sock, struct isc_sockaddr *addressp,
+		       int *lengthp)
+{
+	if (*lengthp < sock->addrlength)
+		return (ISC_R_TOOSMALL);
+	memcpy(addressp, &sock->address, sock->addrlength);
+	*lengthp = sock->addrlength;
+
+	return (ISC_R_SUCCESS);
+}
+
+/*
+ * Locking should not be necessary
+ */
+isc_result_t
+isc_socket_getsockname(isc_socket_t sock, struct isc_sockaddr *addressp,
+		       int *lengthp)
+{
+	struct isc_sockaddr addr;
+	int len;
+
+	len = sizeof(addr);
+	if (getsockname(sock->fd, (struct sockaddr *)&addr, &len) < 0) {
+		UNEXPECTED_ERROR(__FILE__, __LINE__,
+				 "getsockname: %s", strerror(errno));
+		return (ISC_R_UNEXPECTED);
+	}
+
+	if (*lengthp < sock->addrlength)
+		return (ISC_R_TOOSMALL);
+
+	memcpy(addressp, &sock->address, sock->addrlength);
+	*lengthp = sock->addrlength;
+
+	return (ISC_R_SUCCESS);
+}