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// Copyright 2019 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package vcs
import (
"fmt"
"github.com/google/syzkaller/pkg/debugtracer"
"github.com/google/syzkaller/sys/targets"
)
type testos struct {
*git
}
var _ ConfigMinimizer = new(testos)
func newTestos(dir string, opts []RepoOpt) *testos {
return &testos{
git: newGit(dir, nil, opts),
}
}
func (ctx *testos) PreviousReleaseTags(commit string) ([]string, error) {
return ctx.git.previousReleaseTags(commit, false, false, false)
}
func (ctx *testos) EnvForCommit(binDir, commit string, kernelConfig []byte) (*BisectEnv, error) {
return &BisectEnv{KernelConfig: kernelConfig}, nil
}
func (ctx *testos) Minimize(target *targets.Target, original, baseline []byte,
dt debugtracer.DebugTracer, pred func(test []byte) (BisectResult, error)) ([]byte, error) {
if res, err := pred(baseline); err != nil {
return nil, err
} else if res == BisectBad {
return baseline, nil
}
switch string(baseline) {
case "minimize-fails":
return nil, fmt.Errorf("minimization failure")
case "minimize-succeeds":
config := []byte("new-minimized-config")
pred(config)
return config, nil
default:
return original, nil
}
}
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