libhwminijail from hardware/interfaces to libhidl.
This library is not a hardware interface, so it doesn't
belong directly in hardware/interfaces. Moving it to
libhidl because it is intended to be a helper library for
hal implementations that want to use minijail/seccomp.
Test: pass
Change-Id: Id435c70ef9483006e09896be81d5f9600b758e47
diff --git a/minijail/HardwareMinijail.cpp b/minijail/HardwareMinijail.cpp
new file mode 100644
index 0000000..e6b1144
--- /dev/null
+++ b/minijail/HardwareMinijail.cpp
@@ -0,0 +1,45 @@
+//
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <android-base/logging.h>
+#include <libminijail.h>
+
+#include <hwminijail/HardwareMinijail.h>
+
+namespace android {
+namespace hardware {
+
+void SetupMinijail(const std::string& seccomp_policy_path) {
+ if (access(seccomp_policy_path.c_str(), R_OK) == -1) {
+ LOG(WARNING) << "Could not find seccomp policy file at: " << seccomp_policy_path;
+ return;
+ }
+
+ struct minijail* jail = minijail_new();
+ if (jail == NULL) {
+ LOG(FATAL) << "Failed to create minijail.";
+ }
+
+ minijail_no_new_privs(jail);
+ minijail_log_seccomp_filter_failures(jail);
+ minijail_use_seccomp_filter(jail);
+ minijail_parse_seccomp_filters(jail, seccomp_policy_path.c_str());
+ minijail_enter(jail);
+ minijail_destroy(jail);
+}
+
+} // namespace hardware
+} // namespace android