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// Copyright 2018 Google LLC
//
// 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)
}
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