[PATCH] audit signal recipients

When auditing syscalls that send signals, log the pid and security
context for each target process. Optimize the data collection by
adding a counter for signal-related rules, and avoiding allocating an
aux struct unless we have more than one target process. For process
groups, collect pid/context data in blocks of 16. Move the
audit_signal_info() hook up in check_kill_permission() so we audit
attempts where permission is denied.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/sparc64/kernel/audit.c

@@ -28,6 +28,15 @@ static unsigned signal_class[] = {
 ~0U
 };
 
+int audit_classify_arch(int arch)
+{
+#ifdef CONFIG_SPARC32_COMPAT
+	if (arch == AUDIT_ARCH_SPARC)
+		return 1;
+#endif
+	return 0;
+}
+
 int audit_classify_syscall(int abi, unsigned syscall)
 {
 #ifdef CONFIG_SPARC32_COMPAT