From 5ee3fb5affd7646f141749483205ade5fc54adaf Mon Sep 17 00:00:00 2001
From: Darren Tucker <dtucker@zip.com.au>
Date: Tue, 1 Nov 2016 08:12:33 +1100
Subject: [PATCH] Use ptrace(PT_DENY_ATTACH, ..) on OS X.

---
 configure.ac       | 1 +
 platform-tracing.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/configure.ac b/configure.ac
index f5e137812..88c4633d5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -405,6 +405,7 @@ AC_CHECK_HEADERS([ \
 	sys/poll.h \
 	sys/prctl.h \
 	sys/pstat.h \
+	sys/ptrace.h \
 	sys/select.h \
 	sys/stat.h \
 	sys/stream.h \
diff --git a/platform-tracing.c b/platform-tracing.c
index 81020e7f7..4c80a282c 100644
--- a/platform-tracing.c
+++ b/platform-tracing.c
@@ -20,6 +20,9 @@
 #if defined(HAVE_SYS_PRCTL_H)
 #include <sys/prctl.h>	/* For prctl() and PR_SET_DUMPABLE */
 #endif
+#ifdef HAVE_SYS_PTRACE_H
+#include <sys/ptrace.h>
+#endif
 #ifdef HAVE_PRIV_H
 #include <priv.h> /* For setpflags() and __PROC_PROTECT  */
 #endif
@@ -40,4 +43,9 @@ platform_disable_tracing(int strict)
 	if (setpflags(__PROC_PROTECT, 1) != 0 && strict)
 		fatal("unable to make the process untraceable");
 #endif
+#ifdef PT_DENY_ATTACH
+	/* Mac OS X */
+	if (ptrace(PT_DENY_ATTACH, 0, 0, 0) == -1 && strict)
+		fatal("unable to set PT_DENY_ATTACH");
+#endif
 }