1 files changed, 28 insertions, 0 deletions
diff --git a/security/sandbox/linux/LinuxCapabilities.cpp b/security/sandbox/linux/LinuxCapabilities.cpp
new file mode 100644
index 000000000..87e24a009
--- /dev/null
+++ b/security/sandbox/linux/LinuxCapabilities.cpp
@@ -0,0 +1,28 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "LinuxCapabilities.h"
+
+#include <unistd.h>
+#include <sys/syscall.h>
+
+namespace mozilla {
+
+bool
+LinuxCapabilities::GetCurrent() {
+  __user_cap_header_struct header = { _LINUX_CAPABILITY_VERSION_3, 0 };
+  return syscall(__NR_capget, &header, &mBits) == 0
+    && header.version == _LINUX_CAPABILITY_VERSION_3;
+}
+
+bool
+LinuxCapabilities::SetCurrentRaw() const {
+  __user_cap_header_struct header = { _LINUX_CAPABILITY_VERSION_3, 0 };
+  return syscall(__NR_capset, &header, &mBits) == 0
+    && header.version == _LINUX_CAPABILITY_VERSION_3;
+}
+
+} // namespace mozilla