haiku/headers/private/kernel/generic_syscall.h
Axel Dörfler dbef8d930c As suggested by Ingo, the "subsystem" parameter is now a string. That allows
modules to use their module name directly.
Also introduced a whole range of reserved syscall functions in case we want
to add some more.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10458 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-12-14 17:09:06 +00:00

41 lines
1.0 KiB
C

/*
* Copyright 2004, Axel Dörfler, axeld@pinc-software.de. 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)(const char *subsystem, uint32 function, void *buffer, size_t bufferSize);
/* predefined functions */
#define B_RESERVED_SYSCALL_BASE 0x80000000
#define B_SYSCALL_INFO (B_RESERVED_SYSCALL_BASE)
// 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(const char *subsystem, syscall_hook hook,
uint32 version, uint32 flags);
status_t unregister_generic_syscall(const char *subsystem, uint32 version);
#ifdef __cplusplus
}
#endif
#endif /* _KERNEL_GENERIC_SYSCALLS_H */