Add CONFIG_AUDITSC and CONFIG_SECCOMP support for ppc32

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 36 insertions, 4 deletions

diff --git a/arch/ppc/kernel/ptrace.c b/arch/ppc/kernel/ptrace.c
index 59d59a8dc24..e7aee4108de 100644
--- a/arch/ppc/kernel/ptrace.c
+++ b/arch/ppc/kernel/ptrace.c
@@ -27,6 +27,9 @@
 #include <linux/user.h>
 #include <linux/security.h>
 #include <linux/signal.h>
+#include <linux/seccomp.h>
+#include <linux/audit.h>
+#include <linux/module.h>
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
@@ -455,11 +458,10 @@ out:
 	return ret;
 }
 
-void do_syscall_trace(void)
+static void do_syscall_trace(void)
 {
-        if (!test_thread_flag(TIF_SYSCALL_TRACE)
-	    || !(current->ptrace & PT_PTRACED))
-		return;
+	/* the 0x80 provides a way for the tracing parent to distinguish
+	   between a syscall stop and SIGTRAP delivery */
 	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
 				 ? 0x80 : 0));
 
@@ -473,3 +475,33 @@ void do_syscall_trace(void)
 		current->exit_code = 0;
 	}
 }
+
+void do_syscall_trace_enter(struct pt_regs *regs)
+{
+	if (test_thread_flag(TIF_SYSCALL_TRACE)
+	    && (current->ptrace & PT_PTRACED))
+		do_syscall_trace();
+
+	if (unlikely(current->audit_context))
+		audit_syscall_entry(current, AUDIT_ARCH_PPC,
+				    regs->gpr[0],
+				    regs->gpr[3], regs->gpr[4],
+				    regs->gpr[5], regs->gpr[6]);
+}
+
+void do_syscall_trace_leave(struct pt_regs *regs)
+{
+	secure_computing(regs->gpr[0]);
+
+	if (unlikely(current->audit_context))
+		audit_syscall_exit(current,
+				   (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
+				   regs->result);
+
+	if ((test_thread_flag(TIF_SYSCALL_TRACE))
+	    && (current->ptrace & PT_PTRACED))
+		do_syscall_trace();
+}
+
+EXPORT_SYMBOL(do_syscall_trace_enter);
+EXPORT_SYMBOL(do_syscall_trace_leave);