Check in gVisor.

PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463

1 files changed, 40 insertions, 0 deletions

diff --git a/runsc/boot/strace.go b/runsc/boot/strace.go
new file mode 100644
index 000000000..1e898672b
--- /dev/null
+++ b/runsc/boot/strace.go
@@ -0,0 +1,40 @@
+// Copyright 2018 Google Inc.
+//
+// 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.
+
+package boot
+
+import (
+	"gvisor.googlesource.com/gvisor/pkg/sentry/strace"
+)
+
+func enableStrace(conf *Config) error {
+	// We must initialize even if strace is not enabled.
+	strace.Initialize()
+
+	if !conf.Strace {
+		return nil
+	}
+
+	max := conf.StraceLogSize
+	if max == 0 {
+		max = 1024
+	}
+	strace.LogMaximumSize = max
+
+	if len(conf.StraceSyscalls) == 0 {
+		strace.EnableAll(strace.SinkTypeLog)
+		return nil
+	}
+	return strace.Enable(conf.StraceSyscalls, strace.SinkTypeLog)
+}