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// 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 boot
import (
"strings"
"gvisor.dev/gvisor/pkg/sentry/strace"
"gvisor.dev/gvisor/runsc/config"
)
func enableStrace(conf *config.Config) error {
// We must initialize even if strace is not enabled.
strace.Initialize()
if !conf.Strace {
return nil
}
// For now runsc always allows logging application buffers in strace logs.
strace.LogAppDataAllowed = true
max := conf.StraceLogSize
if max == 0 {
max = 1024
}
strace.LogMaximumSize = max
sink := strace.SinkTypeLog
if conf.StraceEvent {
sink = strace.SinkTypeEvent
}
if len(conf.StraceSyscalls) == 0 {
strace.EnableAll(sink)
return nil
}
return strace.Enable(strings.Split(conf.StraceSyscalls, ","), sink)
}
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