Implemented a generic syscall mechanism.

Minor cleanup in syscalls.h. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10451 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-12-14 15:46:53 +00:00
parent a36b16ba28
commit c3c3d22f64
3 changed files with 79 additions and 24 deletions
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2004, Axel Dörfler, [email protected]. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _KERNEL_GENERIC_SYSCALLS_H
+#define _KERNEL_GENERIC_SYSCALLS_H
+
+
+#include <SupportDefs.h>
+
+
+/* If we decide to make this API public, the contents of this file
+ * should be moved to KernelExport.h
+ */
+
+typedef status_t (*syscall_hook)(uint32 subsystem, uint32 function, void *buffer, size_t bufferSize);
+
+/* predefined functions */
+#define B_SYSCALL_INFO	~0UL
+	// gets a minimum version uint32, and fills it with the current version on return
+
+/* syscall flags */
+#define B_SYSCALL_NOT_REPLACEABLE	1
+#define B_DO_NOT_REPLACE_SYSCALL	2
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+status_t register_generic_syscall(uint32 subsystem, syscall_hook hook,
+			uint32 version, uint32 flags);
+status_t unregister_generic_syscall(uint32 subsystem, uint32 version);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _KERNEL_GENERIC_SYSCALLS_H */