Audit patch

[Robert Watson]

The attached, uncompiled and untested patch adds audit points to the PowerPC 
system call path.  The chances it works are good, the chances of it compiling 
are moderate.  Since I don't have any FreeBSD/ppc boxes set up, a hand in 
testing and committing would be appreciated.

Thanks,

Robert N M Watson
Computer Laboratory
University of Cambridge

--- //depot/projects/trustedbsd/base/sys/powerpc/powerpc/trap.c	2006/08/05 14:21:26
+++ //depot/projects/trustedbsd/audit3/sys/powerpc/powerpc/trap.c	2006/08/06 13:22:21
@@ -55,6 +55,8 @@
  #endif
  #include <sys/vmmeter.h>

+#include <security/audit/audit.h>
+
  #include <vm/vm.h>
  #include <vm/pmap.h>
  #include <vm/vm_extern.h>
@@ -418,7 +420,9 @@

  		PTRACESTOP_SC(p, td, S_PT_SCE);

+		AUDIT_SYSCALL_ENTER(code, td);
  		error = (*callp->sy_call)(td, params);
+		AUDIT_SYSCALL_EXIT(error, td);

  		CTR3(KTR_SYSC, "syscall: p=%s %s ret=%x", p->p_comm,
  		     syscallnames[code], td->td_retval[0]);