How to use GenerateSpecialArg method of prog Package

Best Syzkaller code snippet using prog.GenerateSpecialArg

init_iptables.go

Source:init_iptables.go

...20		nonHookFields = 721		unused        = uint64(^uint32(0))22	)23	if old == nil {24		arg = g.GenerateSpecialArg(typ, dir, &calls)25	} else {26		// TODO(dvyukov): try to restore original hook order after mutation27		// instead of assigning brand new offsets.28		arg = old29		calls = g.MutateArg(arg)30	}31	var tableArg *prog.GroupArg32	if hasUnion {33		tableArg = arg.(*prog.UnionArg).Option.(*prog.GroupArg)34	} else {35		tableArg = arg.(*prog.GroupArg)36	}37	numFileds := nonHookFields + 2*hookCount38	if len(tableArg.Inner) != numFileds {39		panic("wrong number of fields in netfilter table")40	}41	entriesArg := tableArg.Inner[numFileds-1].(*prog.GroupArg)42	if len(entriesArg.Inner) != 2 {43		panic("netfilter entries is expected to have 2 fields")44	}45	entriesArray := entriesArg.Inner[0].(*prog.GroupArg)46	// Collect offsets of entries.47	offsets := make([]uint64, len(entriesArray.Inner))48	var pos uint6449	for i, entryArg := range entriesArray.Inner {50		offsets[i] = pos51		pos += entryArg.Size()52	}53	if pos != entriesArray.Size() {54		panic("netfilter offsets are broken")55	}56	genOffset := func() uint64 {57		if g.Rand().Intn(100) == 0 {58			// Assign the underflow entry once in a while.59			// We have it in underflow hooks, so no point in using it frequently.60			return pos61		}62		return offsets[g.Rand().Intn(len(offsets))]63	}64	// Assign offsets to used hooks.65	for hook := hookStart; hook < hookStart+hookCount; hook++ {66		hookArg := tableArg.Inner[hook].(*prog.ConstArg)67		if hookArg.Type().(*prog.ConstType).Val == unused {68			continue // unused hook69		}70		hookArg.Val = genOffset()71	}72	// Assign offsets to used underflow entries.73	for hook := hookStart + hookCount; hook < hookStart+2*hookCount; hook++ {74		hookArg := tableArg.Inner[hook].(*prog.ConstArg)75		if hookArg.Type().(*prog.ConstType).Val == unused {76			continue // unused hook77		}78		hookArg.Val = pos79	}80	// Now update standard target jump offsets.81	prog.ForeachSubArg(arg, func(arg prog.Arg, _ *prog.ArgCtx) {82		if !strings.HasPrefix(arg.Type().Name(), `xt_target_t["", `) {83			return84		}85		targetArg := arg.(*prog.GroupArg)86		valArg := targetArg.Inner[3].(*prog.ConstArg)87		flagsType, ok := valArg.Type().(*prog.FlagsType)88		if !ok {89			return90		}91		if int64(valArg.Val) < 0 {92			for _, val := range flagsType.Vals {93				if val == valArg.Val {94					return // verdict95				}96			}97		}98		valArg.Val = genOffset()99	})100	return101}102func (arch *arch) generateEbtables(g *prog.Gen, typ prog.Type, dir prog.Dir, old prog.Arg) (103	arg prog.Arg, calls []*prog.Call) {104	if old == nil {105		arg = g.GenerateSpecialArg(typ, dir, &calls)106	} else {107		// TODO(dvyukov): try to restore original hook order after mutation108		// instead of assigning brand new offsets.109		arg = old110		calls = g.MutateArg(arg)111	}112	if g.Target().ArgContainsAny(arg) {113		return114	}115	hooksField, entriesField := 4, 7116	if g.Target().PtrSize == 8 {117		// Account for paddings.118		hooksField, entriesField = 5, 9119	}...

init_vusb.go

Source:init_vusb.go

...44}45func (arch *arch) generateUsbDeviceDescriptor(g *prog.Gen, typ0 prog.Type, dir prog.Dir, old prog.Arg) (46	arg prog.Arg, calls []*prog.Call) {47	if old == nil {48		arg = g.GenerateSpecialArg(typ0, dir, &calls)49	} else {50		arg = old51		calls = g.MutateArg(arg)52	}53	if g.Target().ArgContainsAny(arg) {54		return55	}56	id := randUsbDeviceID(g)57	bcdDevice := id.BcdDeviceLo + uint16(g.Rand().Intn(int(id.BcdDeviceHi-id.BcdDeviceLo)+1))58	devArg := arg.(*prog.GroupArg).Inner[0]59	patchGroupArg(devArg, 7, "idVendor", uint64(id.IDVendor))60	patchGroupArg(devArg, 8, "idProduct", uint64(id.IDProduct))61	patchGroupArg(devArg, 9, "bcdDevice", uint64(bcdDevice))62	patchGroupArg(devArg, 3, "bDeviceClass", uint64(id.BDeviceClass))63	patchGroupArg(devArg, 4, "bDeviceSubClass", uint64(id.BDeviceSubClass))64	patchGroupArg(devArg, 5, "bDeviceProtocol", uint64(id.BDeviceProtocol))65	configArg := devArg.(*prog.GroupArg).Inner[14].(*prog.GroupArg).Inner[0].(*prog.GroupArg).Inner[0]66	interfacesArg := configArg.(*prog.GroupArg).Inner[8]67	for i, interfaceArg := range interfacesArg.(*prog.GroupArg).Inner {68		interfaceArg = interfaceArg.(*prog.GroupArg).Inner[0]69		if i > 0 {70			// Generate new IDs for every interface after the first one.71			id = randUsbDeviceID(g)72		}73		patchGroupArg(interfaceArg, 5, "bInterfaceClass", uint64(id.BInterfaceClass))74		patchGroupArg(interfaceArg, 6, "bInterfaceSubClass", uint64(id.BInterfaceSubClass))75		patchGroupArg(interfaceArg, 7, "bInterfaceProtocol", uint64(id.BInterfaceProtocol))76		patchGroupArg(interfaceArg, 2, "bInterfaceNumber", uint64(id.BInterfaceNumber))77	}78	return79}80func randUsbDeviceID(g *prog.Gen) UsbDeviceID {81	totalIds := len(usbIds) / BytesPerUsbID82	idNum := g.Rand().Intn(totalIds)83	base := usbIds[idNum*BytesPerUsbID : (idNum+1)*BytesPerUsbID]84	p := strings.NewReader(base)85	var id UsbDeviceID86	if binary.Read(p, binary.LittleEndian, &id) != nil {87		panic("not enough data to read")88	}89	if (id.MatchFlags & USB_DEVICE_ID_MATCH_VENDOR) == 0 {90		id.IDVendor = uint16(g.Rand().Intn(0xffff + 1))91	}92	if (id.MatchFlags & USB_DEVICE_ID_MATCH_PRODUCT) == 0 {93		id.IDProduct = uint16(g.Rand().Intn(0xffff + 1))94	}95	if (id.MatchFlags & USB_DEVICE_ID_MATCH_DEV_LO) == 0 {96		id.BcdDeviceLo = 0x097	}98	if (id.MatchFlags & USB_DEVICE_ID_MATCH_DEV_HI) == 0 {99		id.BcdDeviceHi = 0xffff100	}101	if (id.MatchFlags & USB_DEVICE_ID_MATCH_DEV_CLASS) == 0 {102		id.BDeviceClass = uint8(g.Rand().Intn(0xff + 1))103	}104	if (id.MatchFlags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) == 0 {105		id.BDeviceSubClass = uint8(g.Rand().Intn(0xff + 1))106	}107	if (id.MatchFlags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) == 0 {108		id.BDeviceProtocol = uint8(g.Rand().Intn(0xff + 1))109	}110	if (id.MatchFlags & USB_DEVICE_ID_MATCH_INT_CLASS) == 0 {111		id.BInterfaceClass = uint8(g.Rand().Intn(0xff + 1))112	}113	if (id.MatchFlags & USB_DEVICE_ID_MATCH_INT_SUBCLASS) == 0 {114		id.BInterfaceSubClass = uint8(g.Rand().Intn(0xff + 1))115	}116	if (id.MatchFlags & USB_DEVICE_ID_MATCH_INT_PROTOCOL) == 0 {117		id.BInterfaceProtocol = uint8(g.Rand().Intn(0xff + 1))118	}119	if (id.MatchFlags & USB_DEVICE_ID_MATCH_INT_NUMBER) == 0 {120		id.BInterfaceNumber = uint8(g.Rand().Intn(0xff + 1))121	}122	return id123}124func (arch *arch) generateUsbHidDeviceDescriptor(g *prog.Gen, typ0 prog.Type, dir prog.Dir, old prog.Arg) (125	arg prog.Arg, calls []*prog.Call) {126	if old == nil {127		arg = g.GenerateSpecialArg(typ0, dir, &calls)128	} else {129		arg = old130		calls = g.MutateArg(arg)131	}132	if g.Target().ArgContainsAny(arg) {133		return134	}135	totalIds := len(hidIds) / BytesPerHidID136	idNum := g.Rand().Intn(totalIds)137	base := hidIds[idNum*BytesPerHidID : (idNum+1)*BytesPerHidID]138	p := strings.NewReader(base)139	var id HidDeviceID140	if binary.Read(p, binary.LittleEndian, &id) != nil {141		panic("not enough data to read")...

GenerateSpecialArg

Using AI Code Generation

1import (2func main() {3	target, err := prog.GetTarget(sys.TargetOS, sys.TargetArch)4	if err != nil {5		fmt.Printf("error in getting target %v", err)6	}7	p := target.MakeProgram()8	arg = p.GenerateSpecialArg(t, nil, nil, nil)9	fmt.Printf("arg value is %v", arg)10}

GenerateSpecialArg

Using AI Code Generation

1import (2func main() {3	fmt.Println(prog.GenerateSpecialArg())4}5import "fmt"6func GenerateSpecialArg() string {7	return fmt.Sprintf("special arg")8}9import (10func TestGenerateSpecialArg(t *testing.T) {11	if GenerateSpecialArg() != "special arg" {12		t.Error("GenerateSpecialArg() != \"special arg\"")13	}14}15import (16func TestGenerateSpecialArg(t *testing.T) {17	if GenerateSpecialArg() != "special arg" {18		t.Error("GenerateSpecialArg() != \"special arg\"")19	}20}21import (22func TestGenerateSpecialArg(t *testing.T) {23	if GenerateSpecialArg() != "special arg" {24		t.Error("GenerateSpecialArg() != \"special arg\"")25	}26}27import (28func TestGenerateSpecialArg(t *testing.T) {29	if GenerateSpecialArg() != "special arg" {30		t.Error("GenerateSpecialArg() != \"special arg\"")31	}32}33import (34func TestGenerateSpecialArg(t *testing.T) {35	if GenerateSpecialArg() != "special arg" {36		t.Error("GenerateSpecialArg() != \"special arg\"")37	}38}39import (40func TestGenerateSpecialArg(t *testing.T) {41	if GenerateSpecialArg() != "special arg" {42		t.Error("GenerateSpecialArg() != \"special arg\"")43	}44}45import (46func TestGenerateSpecialArg(t *testing.T) {47	if GenerateSpecialArg() != "special arg" {48		t.Error("GenerateSpecialArg() != \"special arg\"")49	}50}51import (52func TestGenerateSpecialArg(t *testing.T) {53	if GenerateSpecialArg() != "special arg" {54		t.Error("

GenerateSpecialArg

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println(prog.GenerateSpecialArg())4}5func GenerateSpecialArg() string {6}7I have a package named prog in folder 1. I have another folder 2 with a file named 2.go . I want to use the GenerateSpecialArg() method of prog . I tried using the following code:8prog.GenerateSpecialArg undefined (type prog has no field or method GenerateSpecialArg)9prog.GenerateSpecialArg undefined (type prog has no field or method GenerateSpecialArg)10prog.GenerateSpecialArg undefined (type prog has no field or method GenerateSpecialArg)11prog.GenerateSpecialArg undefined (type prog has no field or method GenerateSpecialArg)12prog.GenerateSpecialArg undefined (type prog has no field or method GenerateSpecialArg)13prog.GenerateSpecialArg undefined (type prog has no field or method GenerateSpecialArg)14prog.GenerateSpecialArg undefined (type prog has no field or method GenerateSpecialArg)

GenerateSpecialArg

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    p := programs.NewProgram()5    p.GenerateSpecialArg()6}7import (8func main() {9    fmt.Println("Hello, playground")10    p := programs.NewProgram()11    p.GenerateSpecialArg()12}13import (14func main() {15    fmt.Println("Hello, playground")16    p := programs.NewProgram()17    p.GenerateSpecialArg()18}19import (20func main() {21    fmt.Println("Hello, playground")22    p := programs.NewProgram()23    p.GenerateSpecialArg()24}25import (26func main() {27    fmt.Println("Hello, playground")28    p := programs.NewProgram()29    p.GenerateSpecialArg()30}31import (32func main() {33    fmt.Println("Hello, playground")34    p := programs.NewProgram()35    p.GenerateSpecialArg()36}37import (38func main() {39    fmt.Println("Hello, playground")40    p := programs.NewProgram()41    p.GenerateSpecialArg()42}

GenerateSpecialArg

Using AI Code Generation

1import (2func main() {3	specialArg = progObj.GenerateSpecialArg("1", "2")4	fmt.Println("Special arg: ", specialArg)5	progObj.TestMethod(specialArg)6}7import (8func main() {9	specialArg = progObj.GenerateSpecialArg("1", "2")10	fmt.Println("Special arg: ", specialArg)11	progObj.TestMethod(specialArg)12}13import (14func main() {15	specialArg = progObj.GenerateSpecialArg("1", "2")16	fmt.Println("Special arg: ", specialArg)17	progObj.TestMethod(specialArg)18}19import (20func main() {21	specialArg = progObj.GenerateSpecialArg("1", "2")22	fmt.Println("Special arg: ", specialArg)23	progObj.TestMethod(specialArg)24}25import (26func main() {27	specialArg = progObj.GenerateSpecialArg("1", "2")28	fmt.Println("Special arg: ", specialArg)29	progObj.TestMethod(specialArg)30}31import (32func main() {

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