1 files changed, 51 insertions, 0 deletions
diff --git a/pkg/sentry/fsimpl/proc/sys.go b/pkg/sentry/fsimpl/proc/sys.go
new file mode 100644
index 000000000..b88256e12
--- /dev/null
+++ b/pkg/sentry/fsimpl/proc/sys.go
@@ -0,0 +1,51 @@
+// Copyright 2019 The gVisor Authors.
+//
+// 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 proc
+
+import (
+	"bytes"
+	"fmt"
+
+	"gvisor.dev/gvisor/pkg/sentry/context"
+	"gvisor.dev/gvisor/pkg/sentry/kernel"
+	"gvisor.dev/gvisor/pkg/sentry/vfs"
+)
+
+// mmapMinAddrData implements vfs.DynamicBytesSource for
+// /proc/sys/vm/mmap_min_addr.
+//
+// +stateify savable
+type mmapMinAddrData struct {
+	k *kernel.Kernel
+}
+
+var _ vfs.DynamicBytesSource = (*mmapMinAddrData)(nil)
+
+// Generate implements vfs.DynamicBytesSource.Generate.
+func (d *mmapMinAddrData) Generate(ctx context.Context, buf *bytes.Buffer) error {
+	fmt.Fprintf(buf, "%d\n", d.k.Platform.MinUserAddress())
+	return nil
+}
+
+// +stateify savable
+type overcommitMemory struct{}
+
+var _ vfs.DynamicBytesSource = (*overcommitMemory)(nil)
+
+// Generate implements vfs.DynamicBytesSource.Generate.
+func (d *overcommitMemory) Generate(ctx context.Context, buf *bytes.Buffer) error {
+	fmt.Fprintf(buf, "0\n")
+	return nil
+}