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// Copyright 2022 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 trace
import (
"context"
"fmt"
"sort"
"strings"
"github.com/google/subcommands"
"gvisor.dev/gvisor/pkg/sentry/seccheck"
"gvisor.dev/gvisor/runsc/flag"
)
// metadata implements subcommands.Command for the "metadata" command.
type metadata struct{}
// Name implements subcommands.Command.
func (*metadata) Name() string {
return "metadata"
}
// Synopsis implements subcommands.Command.
func (*metadata) Synopsis() string {
return "list all trace points configuration information"
}
// Usage implements subcommands.Command.
func (*metadata) Usage() string {
return `metadata - list all trace points configuration information
`
}
// SetFlags implements subcommands.Command.
func (*metadata) SetFlags(*flag.FlagSet) {}
// Execute implements subcommands.Command.
func (l *metadata) Execute(context.Context, *flag.FlagSet, ...any) subcommands.ExitStatus {
// Sort to keep related points together.
points := make([]seccheck.PointDesc, 0, len(seccheck.Points))
for _, pt := range seccheck.Points {
points = append(points, pt)
}
sort.Slice(points, func(i int, j int) bool {
return points[i].Name < points[j].Name
})
fmt.Printf("POINTS (%d)\n", len(seccheck.Points))
for _, pt := range points {
optFields := fieldNames(pt.OptionalFields)
ctxFields := fieldNames(pt.ContextFields)
fmt.Printf("Name: %s, optional fields: [%s], context fields: [%s]\n", pt.Name, strings.Join(optFields, "|"), strings.Join(ctxFields, "|"))
}
fmt.Printf("\nSINKS (%d)\n", len(seccheck.Sinks))
for _, sink := range seccheck.Sinks {
fmt.Printf("Name: %s\n", sink.Name)
}
return subcommands.ExitSuccess
}
func fieldNames(fields []seccheck.FieldDesc) []string {
names := make([]string, 0, len(fields))
for _, f := range fields {
names = append(names, f.Name)
}
return names
}
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