Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/shared/tomoyo-util.c b/src/shared/tomoyo-util.c
new file mode 100644
index 0000000..2347179
--- /dev/null
+++ b/src/shared/tomoyo-util.c
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <unistd.h>
+
+#include "tomoyo-util.h"
+
+bool mac_tomoyo_use(void) {
+        static int cached_use = -1;
+
+        if (cached_use < 0)
+                cached_use = (access("/sys/kernel/security/tomoyo/version",
+                                     F_OK) == 0);
+
+        return cached_use;
+}