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// Copyright 2015 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 csource
import (
"fmt"
"math/rand"
"os"
"reflect"
"testing"
"time"
"github.com/google/syzkaller/pkg/fileutil"
"github.com/google/syzkaller/prog"
)
func initTest(t *testing.T) (rand.Source, int) {
t.Parallel()
iters := 1
seed := int64(time.Now().UnixNano())
rs := rand.NewSource(seed)
t.Logf("seed=%v", seed)
return rs, iters
}
func enumerateField(opt Options, field int) []Options {
var opts []Options
s := reflect.ValueOf(&opt).Elem()
fldName := s.Type().Field(field).Name
fld := s.Field(field)
if fldName == "Sandbox" {
for _, sandbox := range []string{"", "none", "setuid", "namespace"} {
fld.SetString(sandbox)
opts = append(opts, opt)
}
} else if fldName == "Procs" {
for _, procs := range []int64{1, 4} {
fld.SetInt(procs)
opts = append(opts, opt)
}
} else if fldName == "FaultCall" {
opts = append(opts, opt)
} else if fldName == "FaultNth" {
opts = append(opts, opt)
} else if fld.Kind() == reflect.Bool {
for _, v := range []bool{false, true} {
fld.SetBool(v)
opts = append(opts, opt)
}
} else {
panic(fmt.Sprintf("field '%v' is not boolean", fldName))
}
return opts
}
func allOptionsSingle() []Options {
var opts []Options
fields := reflect.TypeOf(Options{}).NumField()
for i := 0; i < fields; i++ {
opts = append(opts, enumerateField(Options{}, i)...)
}
return opts
}
func allOptionsPermutations() []Options {
opts := []Options{Options{}}
fields := reflect.TypeOf(Options{}).NumField()
for i := 0; i < fields; i++ {
var newOpts []Options
for _, opt := range opts {
newOpts = append(newOpts, enumerateField(opt, i)...)
}
opts = newOpts
}
return opts
}
func TestOne(t *testing.T) {
rs, _ := initTest(t)
opts := Options{
Threaded: true,
Collide: true,
Repeat: true,
Procs: 2,
Sandbox: "namespace",
Repro: true,
}
p := prog.GenerateAllSyzProg(rs)
testOne(t, p, opts)
}
func TestOptions(t *testing.T) {
rs, _ := initTest(t)
syzProg := prog.GenerateAllSyzProg(rs)
t.Logf("syz program:\n%s\n", syzProg.Serialize())
permutations := allOptionsSingle()
allPermutations := allOptionsPermutations()
if testing.Short() {
r := rand.New(rs)
for i := 0; i < 32; i++ {
permutations = append(permutations, allPermutations[r.Intn(len(allPermutations))])
}
} else {
permutations = append(permutations, allPermutations...)
}
for i, opts := range permutations {
t.Run(fmt.Sprintf("%v", i), func(t *testing.T) {
rs, iters := initTest(t)
t.Logf("opts: %+v", opts)
for i := 0; i < iters; i++ {
p := prog.Generate(rs, 10, nil)
testOne(t, p, opts)
}
testOne(t, syzProg, opts)
})
}
}
func testOne(t *testing.T, p *prog.Prog, opts Options) {
src, err := Write(p, opts)
if err != nil {
t.Logf("program:\n%s\n", p.Serialize())
t.Fatalf("%v", err)
}
srcf, err := fileutil.WriteTempFile(src)
if err != nil {
t.Logf("program:\n%s\n", p.Serialize())
t.Fatalf("%v", err)
}
defer os.Remove(srcf)
bin, err := Build("c", srcf)
if err != nil {
t.Logf("program:\n%s\n", p.Serialize())
t.Fatalf("%v", err)
}
defer os.Remove(bin)
}
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