Move prctl PR_SET_DUMPABLE into platform.c.

This should make it easier to add additional platform support such as
Solaris (bz#2584).

1 files changed, 14 insertions, 0 deletions

diff --git a/platform.c b/platform.c
index 1f68df3a..ee3e0691 100644
--- a/platform.c
+++ b/platform.c
@@ -19,6 +19,9 @@
 #include "includes.h"
 
 #include <sys/types.h>
+#if defined(HAVE_SYS_PRCTL_H)
+#include <sys/prctl.h>	/* For prctl() and PR_SET_DUMPABLE */
+#endif
 
 #include <stdarg.h>
 #include <unistd.h>
@@ -217,3 +220,14 @@ platform_sys_dir_uid(uid_t uid)
 #endif
 	return 0;
 }
+
+void
+platform_disable_tracing(int strict)
+{
+#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE)
+	/* Disable ptrace on Linux without sgid bit */
+	if (prctl(PR_SET_DUMPABLE, 0) != 0)
+		if (strict)
+			fatal("unable to make the process undumpable");
+#endif
+}