parisc: add kernel audit feature

Implement missing functions for parisc to provide kernel audit feature.

Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/arch/parisc/kernel/audit.c b/arch/parisc/kernel/audit.c
new file mode 100644
index 0000000..eb64a61
--- /dev/null
+++ b/arch/parisc/kernel/audit.c
@@ -0,0 +1,81 @@
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/audit.h>
+#include <asm/unistd.h>
+
+static unsigned dir_class[] = {
+#include <asm-generic/audit_dir_write.h>
+~0U
+};
+
+static unsigned read_class[] = {
+#include <asm-generic/audit_read.h>
+~0U
+};
+
+static unsigned write_class[] = {
+#include <asm-generic/audit_write.h>
+~0U
+};
+
+static unsigned chattr_class[] = {
+#include <asm-generic/audit_change_attr.h>
+~0U
+};
+
+static unsigned signal_class[] = {
+#include <asm-generic/audit_signal.h>
+~0U
+};
+
+int audit_classify_arch(int arch)
+{
+#ifdef CONFIG_COMPAT
+	if (arch == AUDIT_ARCH_PARISC)
+		return 1;
+#endif
+	return 0;
+}
+
+int audit_classify_syscall(int abi, unsigned syscall)
+{
+#ifdef CONFIG_COMPAT
+	extern int parisc32_classify_syscall(unsigned);
+	if (abi == AUDIT_ARCH_PARISC)
+		return parisc32_classify_syscall(syscall);
+#endif
+	switch (syscall) {
+	case __NR_open:
+		return 2;
+	case __NR_openat:
+		return 3;
+	case __NR_execve:
+		return 5;
+	default:
+		return 0;
+	}
+}
+
+static int __init audit_classes_init(void)
+{
+#ifdef CONFIG_COMPAT
+	extern __u32 parisc32_dir_class[];
+	extern __u32 parisc32_write_class[];
+	extern __u32 parisc32_read_class[];
+	extern __u32 parisc32_chattr_class[];
+	extern __u32 parisc32_signal_class[];
+	audit_register_class(AUDIT_CLASS_WRITE_32, parisc32_write_class);
+	audit_register_class(AUDIT_CLASS_READ_32, parisc32_read_class);
+	audit_register_class(AUDIT_CLASS_DIR_WRITE_32, parisc32_dir_class);
+	audit_register_class(AUDIT_CLASS_CHATTR_32, parisc32_chattr_class);
+	audit_register_class(AUDIT_CLASS_SIGNAL_32, parisc32_signal_class);
+#endif
+	audit_register_class(AUDIT_CLASS_WRITE, write_class);
+	audit_register_class(AUDIT_CLASS_READ, read_class);
+	audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);
+	audit_register_class(AUDIT_CLASS_CHATTR, chattr_class);
+	audit_register_class(AUDIT_CLASS_SIGNAL, signal_class);
+	return 0;
+}
+
+__initcall(audit_classes_init);