1 files changed, 35 insertions, 0 deletions
diff --git a/pkg/sentry/fs/proc/cpuinfo.go b/pkg/sentry/fs/proc/cpuinfo.go
new file mode 100644
index 000000000..15031234e
--- /dev/null
+++ b/pkg/sentry/fs/proc/cpuinfo.go
@@ -0,0 +1,35 @@
+// Copyright 2018 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 (
+	"gvisor.googlesource.com/gvisor/pkg/sentry/context"
+	"gvisor.googlesource.com/gvisor/pkg/sentry/fs"
+	"gvisor.googlesource.com/gvisor/pkg/sentry/kernel"
+)
+
+func newCPUInfo(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
+	k := kernel.KernelFromContext(ctx)
+	features := k.FeatureSet()
+	if features == nil {
+		// Kernel is always initialized with a FeatureSet.
+		panic("cpuinfo read with nil FeatureSet")
+	}
+	contents := make([]byte, 0, 1024)
+	for i, max := uint(0), k.ApplicationCores(); i < max; i++ {
+		contents = append(contents, []byte(features.CPUInfo(i))...)
+	}
+	return newStaticProcInode(ctx, msrc, contents)
+}