Changeset 183b4a0 in mainline

Timestamp:

2007-09-15T07:01:47Z (17 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

d79dcdb

Parents:

b3f598e

Message:

Add wrappers facilitating easy use of IPC_M_DATA_SEND calls and answers.

Location:

uspace/lib/libc

Files:

• generic/ipc.c (modified) (2 diffs)
• include/ipc/ipc.h (modified) (1 diff)

uspace/lib/libc/generic/ipc.c

@@ -51 +51 @@
 #include <async.h>
 #include <fibril.h>
+#include <assert.h>
 
 /**
@@ -595 +596 @@
 }
 
+/** Wrapper for accepting the IPC_M_DATA_SEND calls.
+ *
+ * This wrapper only makes it more comfortable to accept IPC_M_DATA_SEND calls
+ * so that the user doesn't have to remember the meaning of each IPC argument.
+ *
+ * So far, this wrapper is to be used from within a connection fibril.
+ *
+ * @param callid        Storage where the hash of the IPC_M_DATA_SEND call will
+ *                      be stored.
+ * @param call          Storage where the incoming call will be stored.
+ * @param dst           Storage where the suggested destination address will
+ *                      be stored. May be NULL.
+ * @param size          Storage where the suggested size will be stored. May be
+ *                      NULL
+ *
+ * @return              Non-zero on success, zero on failure.
+ */
+int ipc_data_send_accept(ipc_callid_t *callid, ipc_call_t *call, void **dst,
+    size_t *size)
+{
+        assert(callid);
+        assert(call);
+
+        *callid = async_get_call(call);
+        if (IPC_GET_METHOD(*call) != IPC_M_DATA_SEND)
+                return 0;
+        if (dst)
+                *dst = (void *) IPC_GET_ARG1(*call);
+        if (size)
+                *size = (size_t) IPC_GET_ARG3(*call);
+        return 1;
+}
+
+/** Wrapper for answering the IPC_M_DATA_SEND calls.
+ *
+ * This wrapper only makes it more comfortable to answer IPC_M_DATA_SEND calls
+ * so that the user doesn't have to remember the meaning of each IPC argument.
+ *
+ * @param callid        Hash of the IPC_M_DATA_SEND call to answer.
+ * @param call          Call structure with the request.
+ * @param dst           Final destination address for the IPC_M_DATA_SEND call.
+ * @param size          Final size for the IPC_M_DATA_SEND call.
+ *
+ * @return              Zero on success or a value from @ref errno.h on failure.
+ */
+ipcarg_t ipc_data_send_answer(ipc_callid_t callid, ipc_call_t *call, void *dst,     size_t size)
+{
+        IPC_SET_RETVAL(*call, EOK);
+        IPC_SET_ARG1(*call, (ipcarg_t) dst);
+        IPC_SET_ARG3(*call, (ipcarg_t) size);
+        return ipc_answer(callid, call);
+}
+ 
 /** @}
  */

uspace/lib/libc/include/ipc/ipc.h

@@ -92 +92 @@
     ipcarg_t arg1);
 
+extern int ipc_data_send_accept(ipc_callid_t *callid, ipc_call_t *call,
+    void **dst, size_t *size);
+extern ipcarg_t ipc_data_send_answer(ipc_callid_t callid, ipc_call_t *call,
+    void *dst, size_t size);
+
 #endif