Changeset 27d293a in mainline for uspace/lib/libc/generic/ipc.c

Timestamp:

2007-12-31T16:46:43Z (17 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

215e375

Parents:

3115355

Message:

Rename IPC_M_AS_AREA_SEND to IPC_M_SHARE_OUT. Rename IPC_M_AS_AREA_RECV to
IPC_M_SHARE_IN. Provide user-friendly wrappers for these methods so that even
dummies can get it right. Some applications using simpler protocols still use
these methods directly.

File:

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

uspace/lib/libc/generic/ipc.c

@@ -667 +667 @@
 }
 
+/** Wrapper for making IPC_M_SHARE_IN calls.
+ *
+ * @param phoneid       Phone that will be used to contact the receiving side.
+ * @param dst           Destination address space area base.
+ * @param size          Size of the destination address space area.
+ * @param arg           User defined argument.
+ * @param flags         Storage where the received flags will be stored. Can be
+ *                      NULL.
+ *
+ * @return              Zero on success or a negative error code from errno.h.
+ */
+int ipc_share_in_send(int phoneid, void *dst, size_t size, ipcarg_t arg,
+    int *flags)
+{
+        int res;
+        sysarg_t tmp_flags;
+        res = ipc_call_sync_3_2(phoneid, IPC_M_SHARE_IN, (ipcarg_t) dst,
+            (ipcarg_t) size, arg, NULL, &tmp_flags);
+        if (flags)
+                *flags = tmp_flags;
+        return res;
+}
+
+/** Wrapper for receiving the IPC_M_SHARE_IN calls.
+ *
+ * This wrapper only makes it more comfortable to receive IPC_M_SHARE_IN 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_SHARE_IN call will
+ *                      be stored.
+ * @param size          Destination address space area size.    
+ *
+ * @return              Non-zero on success, zero on failure.
+ */
+int ipc_share_in_receive(ipc_callid_t *callid, size_t *size)
+{
+        ipc_call_t data;
+        
+        assert(callid);
+        assert(size);
+
+        *callid = async_get_call(&data);
+        if (IPC_GET_METHOD(data) != IPC_M_SHARE_IN)
+                return 0;
+        *size = (size_t) IPC_GET_ARG2(data);
+        return 1;
+}
+
+/** Wrapper for answering the IPC_M_SHARE_IN calls.
+ *
+ * This wrapper only makes it more comfortable to answer IPC_M_DATA_READ calls
+ * so that the user doesn't have to remember the meaning of each IPC argument.
+ *
+ * @param callid        Hash of the IPC_M_DATA_READ call to answer.
+ * @param src           Source address space base.
+ * @param flags         Flags to be used for sharing. Bits can be only cleared.
+ *
+ * @return              Zero on success or a value from @ref errno.h on failure.
+ */
+int ipc_share_in_deliver(ipc_callid_t callid, void *src, int flags)
+{
+        return ipc_answer_2(callid, EOK, (ipcarg_t) src, (ipcarg_t) flags);
+}
+
+/** Wrapper for making IPC_M_SHARE_OUT calls.
+ *
+ * @param phoneid       Phone that will be used to contact the receiving side.
+ * @param src           Source address space area base address.
+ * @param flags         Flags to be used for sharing. Bits can be only cleared.
+ *
+ * @return              Zero on success or a negative error code from errno.h.
+ */
+int ipc_share_out_send(int phoneid, void *src, int flags)
+{
+        return ipc_call_sync_3_0(phoneid, IPC_M_SHARE_OUT, (ipcarg_t) src, 0,
+            (ipcarg_t) flags);
+}
+
+/** Wrapper for receiving the IPC_M_SHARE_OUT calls.
+ *
+ * This wrapper only makes it more comfortable to receive IPC_M_SHARE_OUT 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_SHARE_OUT call will
+ *                      be stored.
+ * @param size          Storage where the source address space area size will be
+ *                      stored.
+ * @param flags         Storage where the sharing flags will be stored.
+ *
+ * @return              Non-zero on success, zero on failure.
+ */
+int ipc_share_out_receive(ipc_callid_t *callid, size_t *size, int *flags)
+{
+        ipc_call_t data;
+        
+        assert(callid);
+        assert(size);
+        assert(flags);
+
+        *callid = async_get_call(&data);
+        if (IPC_GET_METHOD(data) != IPC_M_DATA_WRITE)
+                return 0;
+        *size = (size_t) IPC_GET_ARG2(data);
+        *flags = (int) IPC_GET_ARG3(data);
+        return 1;
+}
+
+/** Wrapper for answering the IPC_M_SHARE_OUT calls.
+ *
+ * This wrapper only makes it more comfortable to answer IPC_M_SHARE_OUT calls
+ * so that the user doesn't have to remember the meaning of each IPC argument.
+ *
+ * @param callid        Hash of the IPC_M_DATA_WRITE call to answer.
+ * @param dst           Destination address space area base address.    
+ *
+ * @return              Zero on success or a value from @ref errno.h on failure.
+ */
+int ipc_share_out_deliver(ipc_callid_t callid, void *dst)
+{
+        return ipc_answer_1(callid, EOK, (ipcarg_t) dst);
+}
+
+
 /** Wrapper for making IPC_M_DATA_READ calls.
  *