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How to use MakeResultArg method of prog Package

Best Syzkaller code snippet using prog.MakeResultArg

init.go

Source:init.go

...94			prog.MakePointerArg(meta.Args[0], start, 0, npages, nil),95			prog.MakeConstArg(meta.Args[1], npages*pageSize),96			prog.MakeConstArg(meta.Args[2], arch.PROT_READ|arch.PROT_WRITE),97			prog.MakeConstArg(meta.Args[3], arch.MAP_ANONYMOUS|arch.MAP_PRIVATE|arch.MAP_FIXED),98			prog.MakeResultArg(meta.Args[4], nil, invalidFD),99			prog.MakeConstArg(meta.Args[5], 0),100		},101		Ret: prog.MakeReturnArg(meta.Ret),102	}103}104func (arch *arch) analyzeMmap(c *prog.Call) (start, npages uint64, mapped bool) {105	switch c.Meta.Name {106	case "mmap":107		// Filter out only very wrong arguments.108		npages = c.Args[1].(*prog.ConstArg).Val / pageSize109		if npages == 0 {110			return111		}112		flags := c.Args[3].(*prog.ConstArg).Val113		fd := c.Args[4].(*prog.ResultArg).Val114		if flags&arch.MAP_ANONYMOUS == 0 && fd == invalidFD {115			return116		}117		start = c.Args[0].(*prog.PointerArg).PageIndex118		mapped = true119		return120	case "munmap":121		start = c.Args[0].(*prog.PointerArg).PageIndex122		npages = c.Args[1].(*prog.ConstArg).Val / pageSize123		mapped = false124		return125	case "mremap":126		start = c.Args[4].(*prog.PointerArg).PageIndex127		npages = c.Args[2].(*prog.ConstArg).Val / pageSize128		mapped = true129		return130	default:131		return132	}133}134func (arch *arch) sanitizeCall(c *prog.Call) {135	switch c.Meta.CallName {136	case "mmap":137		// Add MAP_FIXED flag, otherwise it produces non-deterministic results.138		c.Args[3].(*prog.ConstArg).Val |= arch.MAP_FIXED139	case "mremap":140		// Add MREMAP_FIXED flag, otherwise it produces non-deterministic results.141		flags := c.Args[3].(*prog.ConstArg)142		if flags.Val&arch.MREMAP_MAYMOVE != 0 {143			flags.Val |= arch.MREMAP_FIXED144		}145	case "mknod", "mknodat":146		pos := 1147		if c.Meta.CallName == "mknodat" {148			pos = 2149		}150		mode := c.Args[pos].(*prog.ConstArg)151		dev := c.Args[pos+1].(*prog.ConstArg)152		// Char and block devices read/write io ports, kernel memory and do other nasty things.153		// TODO: not required if executor drops privileges.154		switch mode.Val & (arch.S_IFREG | arch.S_IFCHR | arch.S_IFBLK | arch.S_IFIFO | arch.S_IFSOCK) {155		case arch.S_IFREG, arch.S_IFIFO, arch.S_IFSOCK:156		case arch.S_IFBLK:157			// TODO(dvyukov): mknod dev argument is uint32,158			// but prog arguments contain not-truncated uint64 values,159			// so we can mistakenly assume that this is not loop, when it actually is.160			// This is not very harmful, but need to verify other arguments in this function.161			if dev.Val>>8 == 7 {162				break // loop163			}164			mode.Val &^= arch.S_IFBLK165			mode.Val |= arch.S_IFREG166		case arch.S_IFCHR:167			mode.Val &^= arch.S_IFCHR168			mode.Val |= arch.S_IFREG169		}170	case "syslog":171		cmd := c.Args[0].(*prog.ConstArg)172		// These disable console output, but we need it.173		if cmd.Val == arch.SYSLOG_ACTION_CONSOLE_OFF || cmd.Val == arch.SYSLOG_ACTION_CONSOLE_ON {174			cmd.Val = arch.SYSLOG_ACTION_SIZE_UNREAD175		}176	case "ioctl":177		cmd := c.Args[1].(*prog.ConstArg)178		// Freeze kills machine. Though, it is an interesting functions,179		// so we need to test it somehow.180		// TODO: not required if executor drops privileges.181		if uint64(uint32(cmd.Val)) == arch.FIFREEZE {182			cmd.Val = arch.FITHAW183		}184	case "ptrace":185		req := c.Args[0].(*prog.ConstArg)186		// PTRACE_TRACEME leads to unkillable processes, see:187		// https://groups.google.com/forum/#!topic/syzkaller/uGzwvhlCXAw188		if req.Val == arch.PTRACE_TRACEME {189			req.Val = ^uint64(0)190		}191	case "exit", "exit_group":192		code := c.Args[0].(*prog.ConstArg)193		// These codes are reserved by executor.194		if code.Val%128 == 67 || code.Val%128 == 68 {195			code.Val = 1196		}197	}198}199func (arch *arch) generateTimespec(g *prog.Gen, typ *prog.StructType, old *prog.GroupArg) (arg prog.Arg, calls []*prog.Call) {200	// We need to generate timespec/timeval that are either201	// (1) definitely in the past, or202	// (2) definitely in unreachable fututre, or203	// (3) few ms ahead of now.204	// Note: timespec/timeval can be absolute or relative to now.205	// Note: executor has blocking syscall timeout of 20ms,206	// so we generate both 10ms and 30ms.207	usec := typ.Name() == "timeval"208	switch {209	case g.NOutOf(1, 4):210		// Now for relative, past for absolute.211		arg = prog.MakeGroupArg(typ, []prog.Arg{212			prog.MakeResultArg(typ.Fields[0], nil, 0),213			prog.MakeResultArg(typ.Fields[1], nil, 0),214		})215	case g.NOutOf(1, 3):216		// Few ms ahead for relative, past for absolute217		nsec := uint64(10 * 1e6)218		if g.NOutOf(1, 2) {219			nsec = 30 * 1e6220		}221		if usec {222			nsec /= 1e3223		}224		arg = prog.MakeGroupArg(typ, []prog.Arg{225			prog.MakeResultArg(typ.Fields[0], nil, 0),226			prog.MakeResultArg(typ.Fields[1], nil, nsec),227		})228	case g.NOutOf(1, 2):229		// Unreachable fututre for both relative and absolute230		arg = prog.MakeGroupArg(typ, []prog.Arg{231			prog.MakeResultArg(typ.Fields[0], nil, 2e9),232			prog.MakeResultArg(typ.Fields[1], nil, 0),233		})234	default:235		// Few ms ahead for absolute.236		meta := arch.clockGettimeSyscall237		ptrArgType := meta.Args[1].(*prog.PtrType)238		argType := ptrArgType.Type.(*prog.StructType)239		tp := prog.MakeGroupArg(argType, []prog.Arg{240			prog.MakeResultArg(argType.Fields[0], nil, 0),241			prog.MakeResultArg(argType.Fields[1], nil, 0),242		})243		var tpaddr prog.Arg244		tpaddr, calls = g.Alloc(ptrArgType, tp)245		gettime := &prog.Call{246			Meta: meta,247			Args: []prog.Arg{248				prog.MakeConstArg(meta.Args[0], arch.CLOCK_REALTIME),249				tpaddr,250			},251			Ret: prog.MakeReturnArg(meta.Ret),252		}253		calls = append(calls, gettime)254		sec := prog.MakeResultArg(typ.Fields[0], tp.(*prog.GroupArg).Inner[0], 0)255		nsec := prog.MakeResultArg(typ.Fields[1], tp.(*prog.GroupArg).Inner[1], 0)256		msec := uint64(10)257		if g.NOutOf(1, 2) {258			msec = 30259		}260		if usec {261			nsec.(*prog.ResultArg).OpDiv = 1e3262			nsec.(*prog.ResultArg).OpAdd = msec * 1e3263		} else {264			nsec.(*prog.ResultArg).OpAdd = msec * 1e6265		}266		arg = prog.MakeGroupArg(typ, []prog.Arg{sec, nsec})267	}268	return269}...

MakeResultArg

Using AI Code Generation

1import (2func main() {3	engine, _ := gapstone.New(4	insn, _ := engine.Assemble("add eax, 0x1234", 0x1000)5	prog, _ := engine.NewProgram()6	prog.AddInstruction(insn[0])7	resultArg, _ := prog.MakeResultArg()8	prog.AddResultArg(resultArg)9	fmt.Println(prog.String())10}11import (12func main() {13	engine, _ := gapstone.New(14	insn, _ := engine.Assemble("add eax, 0x1234", 0x1000)15	prog, _ := engine.NewProgram()16	prog.AddInstruction(insn[0])17	resultArg, _ := prog.MakeResultArg()18	prog.AddResultArg(resultArg)19	fmt.Println(prog.String())20}21import (22func main() {23	engine, _ := gapstone.New(

MakeResultArg

Using AI Code Generation

1import (2func main() {3	fset := token.NewFileSet()4	f, err := parser.ParseFile(fset, files[0], nil, 0)5	if err != nil {6		log.Fatal(err)7	}8	conf := loader.Config{Fset: fset, TypeCheckFuncBodies: func(path string) bool { return true }}9	conf.CreateFromFiles("main", f)10	prog, err := conf.Load()11	if err != nil {12		log.Fatal(err)13	}14	pkg := prog.Package("main")15	if pkg == nil {16		log.Fatal("no package found")17	}18	funcMap := make(map[string][]string)19	for _, file := range files {20		f, err := parser.ParseFile(fset, file, nil, 0)21		if err != nil {22			log.Fatal(err)23		}24		funcDecls := astutil.DeclaredFuncs(f)25		for _, funcDecl := range funcDecls {26			funcRetTypes := getFuncRetTypes(funcDecl.Type.Results, info)27		}28	}

MakeResultArg

Using AI Code Generation

1import "fmt"2import "github.com/google/syzkaller/prog"3func main() {4    p := prog.Prog{}5    p.MakeResultArg()6    fmt.Println(p)7}8{[] 0x0}

MakeResultArg

Using AI Code Generation

1import (2func main() {3	req := new(plugin_go.CodeGeneratorRequest)4	req.Read(os.Stdin)5	resp := new(plugin_go.CodeGeneratorResponse)6	files := protoc.NewFileDescriptorSet()7	for _, protoFile := range req.ProtoFile {8		fd := protoc.NewFileDescriptor(protoFile, files)9		files.Add(fd)10	}11	for _, name := range req.FileToGenerate {12		fd := files.ByName(name)13		if fd == nil {14		}15		g := generator_go.NewGenerator()16		g.CommandLineParameters(req.GetParameter())17		g.WrapTypes()18		g.SetPackageNames(fd)19		g.BuildTypeNameMap(fd)20		g.GenerateAllFiles(fd)21		resp.File = append(resp.File, g.Response...)22	}23	resp.Write(os.Stdout)24}

MakeResultArg

Using AI Code Generation

1import (2func main() {3	p := prog.Prog{}4	r := prog.ResultArg{}5	r1 := p.MakeResultArg(&r, 4)6	fmt.Println(r1)7}8&{0 0 0 0 0 0 0 0}9func (p *Prog) MakeReturnArg(res *ResultArg, size uint64) *ReturnArg10import (11func main() {12	p := prog.Prog{}13	r := prog.ResultArg{}14	r1 := p.MakeReturnArg(&r, 4)15	fmt.Println(r1)16}17&{0 0 0 0 0 0 0 0}18func (p *Prog) MakeReturn(res *ResultArg, size uint64) *Return19import (20func main() {

MakeResultArg

Using AI Code Generation

1import (2func main() {3	p := prog.MakeResultArg()4	fmt.Println(p)5}6type ResultArg struct {7}8func MakeResultArg() *ResultArg {9	return &ResultArg{Arg1: 1, Arg2: 2, Arg3: 3}10}11prog.go:7: can't find import: "prog"12To fix this, we need to use the import path as the package name. In the above example, we can use prog/prog as the package name. The following is the updated code:13type ResultArg struct {14}15func MakeResultArg() *ResultArg {16	return &ResultArg{Arg1: 1, Arg2: 2, Arg3: 3}17}18import (19func main() {20	p := prog.MakeResultArg()21	fmt.Println(p)22}

MakeResultArg

Using AI Code Generation

1import (2func main() {3	fmt.Println(prog.MakeResultArg())4}5import (6func main() {7	fmt.Println(prog.MakeResultArg())8}9import "fmt"10func MakeResultArg() string {11	return fmt.Sprintf("Hello, World!")12}13import "fmt"14func MakeResultArg() string {15	return fmt.Sprintf("Hello, World!")16}17import "fmt"18func MakeResultArg() string {19	return fmt.Sprintf("Hello, World!")20}21import "fmt"22func MakeResultArg() string {23	return fmt.Sprintf("Hello, World!")24}25import "fmt"

MakeResultArg

Using AI Code Generation

1import (2func main() {3	prog.MakeResultArg()4	fmt.Println("Done")5}6import (7func main() {8	prog.MakeResultArg()9	fmt.Println("Done")10}11import (12func main() {13	prog.MakeResultArg()14	fmt.Println("Done")15}16import (17func main() {18	prog.MakeResultArg()19	fmt.Println("Done")20}21import (22func main() {23	prog.MakeResultArg()24	fmt.Println("Done")25}26import (27func main() {28	prog.MakeResultArg()29	fmt.Println("Done")30}31import (32func main() {33	prog.MakeResultArg()34	fmt.Println("Done")35}

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