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How to use Dir method of prog Package

Best Syzkaller code snippet using prog.Dir

proggen.go

Source:proggen.go

...103		var strArg parser.IrType104		if i < len(straceCall.Args) {105			strArg = straceCall.Args[i]106		}107		res := ctx.genArg(syzCall.Meta.Args[i].Type, prog.DirIn, strArg)108		syzCall.Args = append(syzCall.Args, res)109	}110	ctx.genResult(syzCall.Meta.Ret, straceCall.Ret)111	return syzCall112}113func (ctx *context) Select(syscall *parser.Syscall) *prog.Syscall {114	for _, selector := range ctx.selectors {115		if variant := selector.Select(syscall); variant != nil {116			return variant117		}118	}119	return ctx.target.SyscallMap[syscall.CallName]120}121func (ctx *context) genResult(syzType prog.Type, straceRet int64) {122	if straceRet <= 0 {123		return124	}125	straceExpr := parser.Constant(uint64(straceRet))126	switch syzType.(type) {127	case *prog.ResourceType:128		log.Logf(2, "call: %s returned a resource type with val: %s",129			ctx.currentStraceCall.CallName, straceExpr.String())130		ctx.returnCache.cache(syzType, straceExpr, ctx.currentSyzCall.Ret)131	}132}133func (ctx *context) genArg(syzType prog.Type, dir prog.Dir, traceArg parser.IrType) prog.Arg {134	if traceArg == nil {135		log.Logf(3, "parsing syzType: %s, traceArg is nil. generating default arg...", syzType.Name())136		return syzType.DefaultArg(dir)137	}138	log.Logf(3, "parsing arg of syz type: %s, ir type: %#v", syzType.Name(), traceArg)139	if dir == prog.DirOut {140		switch syzType.(type) {141		case *prog.PtrType, *prog.StructType, *prog.ResourceType, *prog.BufferType:142			// Resource Types need special care. Pointers, Structs can have resource fields e.g. pipe, socketpair143			// Buffer may need special care in out direction144		default:145			return syzType.DefaultArg(dir)146		}147	}148	switch a := syzType.(type) {149	case *prog.IntType, *prog.ConstType, *prog.FlagsType, *prog.CsumType:150		return ctx.genConst(a, dir, traceArg)151	case *prog.LenType:152		return syzType.DefaultArg(dir)153	case *prog.ProcType:154		return ctx.parseProc(a, dir, traceArg)155	case *prog.ResourceType:156		return ctx.genResource(a, dir, traceArg)157	case *prog.PtrType:158		return ctx.genPtr(a, dir, traceArg)159	case *prog.BufferType:160		return ctx.genBuffer(a, dir, traceArg)161	case *prog.StructType:162		return ctx.genStruct(a, dir, traceArg)163	case *prog.ArrayType:164		return ctx.genArray(a, dir, traceArg)165	case *prog.UnionType:166		return ctx.genUnionArg(a, dir, traceArg)167	case *prog.VmaType:168		return ctx.genVma(a, dir, traceArg)169	default:170		log.Fatalf("unsupported type: %#v", syzType)171	}172	return nil173}174func (ctx *context) genVma(syzType *prog.VmaType, dir prog.Dir, _ parser.IrType) prog.Arg {175	npages := uint64(1)176	if syzType.RangeBegin != 0 || syzType.RangeEnd != 0 {177		npages = syzType.RangeEnd178	}179	return prog.MakeVmaPointerArg(syzType, dir, ctx.builder.AllocateVMA(npages), npages)180}181func (ctx *context) genArray(syzType *prog.ArrayType, dir prog.Dir, traceType parser.IrType) prog.Arg {182	var args []prog.Arg183	switch a := traceType.(type) {184	case *parser.GroupType:185		for i := 0; i < len(a.Elems); i++ {186			args = append(args, ctx.genArg(syzType.Elem, dir, a.Elems[i]))187		}188	default:189		log.Fatalf("unsupported type for array: %#v", traceType)190	}191	return prog.MakeGroupArg(syzType, dir, args)192}193func (ctx *context) genStruct(syzType *prog.StructType, dir prog.Dir, traceType parser.IrType) prog.Arg {194	var args []prog.Arg195	switch a := traceType.(type) {196	case *parser.GroupType:197		j := 0198		if ret, recursed := ctx.recurseStructs(syzType, dir, a); recursed {199			return ret200		}201		for i := range syzType.Fields {202			if prog.IsPad(syzType.Fields[i].Type) {203				args = append(args, syzType.Fields[i].DefaultArg(dir))204				continue205			}206			// If the last n fields of a struct are zero or NULL, strace will occasionally omit those values207			// this creates a mismatch in the number of elements in the ir type and in208			// our descriptions. We generate default values for omitted fields209			if j >= len(a.Elems) {210				args = append(args, syzType.Fields[i].DefaultArg(dir))211			} else {212				args = append(args, ctx.genArg(syzType.Fields[i].Type, dir, a.Elems[j]))213			}214			j++215		}216	case *parser.BufferType:217		// We could have a case like the following:218		// ioctl(3, 35111, {ifr_name="\x6c\x6f", ifr_hwaddr=00:00:00:00:00:00}) = 0219		// if_hwaddr gets parsed as a BufferType but our syscall descriptions have it as a struct type220		return syzType.DefaultArg(dir)221	default:222		log.Fatalf("unsupported type for struct: %#v", a)223	}224	return prog.MakeGroupArg(syzType, dir, args)225}226// recurseStructs handles cases where syzType corresponds to struct descriptions like227// sockaddr_storage_in6 {228//        addr    sockaddr_in6229// } [size[SOCKADDR_STORAGE_SIZE], align_ptr]230// which need to be recursively generated. It returns true if we needed to recurse231// along with the generated argument and false otherwise.232func (ctx *context) recurseStructs(syzType *prog.StructType, dir prog.Dir, traceType *parser.GroupType) (prog.Arg, bool) {233	// only consider structs with one non-padded field234	numFields := 0235	for _, field := range syzType.Fields {236		if prog.IsPad(field.Type) {237			continue238		}239		numFields++240	}241	if numFields != 1 {242		return nil, false243	}244	// the strace group type needs to have more one field (a mismatch)245	if len(traceType.Elems) == 1 {246		return nil, false247	}248	// first field needs to be a struct249	switch t := syzType.Fields[0].Type.(type) {250	case *prog.StructType:251		var args []prog.Arg252		// first element and traceType should have the same number of elements253		if len(t.Fields) != len(traceType.Elems) {254			return nil, false255		}256		args = append(args, ctx.genStruct(t, dir, traceType))257		for _, field := range syzType.Fields[1:] {258			args = append(args, field.DefaultArg(dir))259		}260		return prog.MakeGroupArg(syzType, dir, args), true261	}262	return nil, false263}264func (ctx *context) genUnionArg(syzType *prog.UnionType, dir prog.Dir, straceType parser.IrType) prog.Arg {265	if straceType == nil {266		log.Logf(1, "generating union arg. straceType is nil")267		return syzType.DefaultArg(dir)268	}269	log.Logf(4, "generating union arg: %s %#v", syzType.TypeName, straceType)270	// Unions are super annoying because they sometimes need to be handled case by case271	// We might need to lookinto a matching algorithm to identify the union type that most closely272	// matches our strace type.273	switch syzType.TypeName {274	case "sockaddr_storage":275		return ctx.genSockaddrStorage(syzType, dir, straceType)276	case "sockaddr_nl":277		return ctx.genSockaddrNetlink(syzType, dir, straceType)278	case "ifr_ifru":279		return ctx.genIfrIfru(syzType, dir, straceType)280	}281	return prog.MakeUnionArg(syzType, dir, ctx.genArg(syzType.Fields[0].Type, dir, straceType), 0)282}283func (ctx *context) genBuffer(syzType *prog.BufferType, dir prog.Dir, traceType parser.IrType) prog.Arg {284	if dir == prog.DirOut {285		if !syzType.Varlen() {286			return prog.MakeOutDataArg(syzType, dir, syzType.Size())287		}288		switch a := traceType.(type) {289		case *parser.BufferType:290			return prog.MakeOutDataArg(syzType, dir, uint64(len(a.Val)))291		default:292			switch syzType.Kind {293			case prog.BufferBlobRand:294				size := rand.Intn(256)295				return prog.MakeOutDataArg(syzType, dir, uint64(size))296			case prog.BufferBlobRange:297				max := rand.Intn(int(syzType.RangeEnd) - int(syzType.RangeBegin) + 1)298				size := max + int(syzType.RangeBegin)299				return prog.MakeOutDataArg(syzType, dir, uint64(size))300			default:301				log.Fatalf("unexpected buffer type kind: %v. call %v arg %#v", syzType.Kind, ctx.currentSyzCall, traceType)302			}303		}304	}305	var bufVal []byte306	switch a := traceType.(type) {307	case *parser.BufferType:308		bufVal = []byte(a.Val)309	case parser.Constant:310		val := a.Val()311		bArr := make([]byte, 8)312		binary.LittleEndian.PutUint64(bArr, val)313		bufVal = bArr314	default:315		log.Fatalf("unsupported type for buffer: %#v", traceType)316	}317	// strace always drops the null byte for buffer types but we only need to add it back for filenames and strings318	switch syzType.Kind {319	case prog.BufferFilename, prog.BufferString:320		bufVal = append(bufVal, '\x00')321	}322	if !syzType.Varlen() {323		size := syzType.Size()324		for uint64(len(bufVal)) < size {325			bufVal = append(bufVal, 0)326		}327		bufVal = bufVal[:size]328	}329	return prog.MakeDataArg(syzType, dir, bufVal)330}331func (ctx *context) genPtr(syzType *prog.PtrType, dir prog.Dir, traceType parser.IrType) prog.Arg {332	switch a := traceType.(type) {333	case parser.Constant:334		if a.Val() == 0 {335			return prog.MakeSpecialPointerArg(syzType, dir, 0)336		}337		// Likely have a type of the form bind(3, 0xfffffffff, [3]);338		res := syzType.Elem.DefaultArg(syzType.ElemDir)339		return ctx.addr(syzType, dir, res.Size(), res)340	default:341		res := ctx.genArg(syzType.Elem, syzType.ElemDir, a)342		return ctx.addr(syzType, dir, res.Size(), res)343	}344}345func (ctx *context) genConst(syzType prog.Type, dir prog.Dir, traceType parser.IrType) prog.Arg {346	switch a := traceType.(type) {347	case parser.Constant:348		return prog.MakeConstArg(syzType, dir, a.Val())349	case *parser.GroupType:350		// Sometimes strace represents a pointer to int as [0] which gets parsed351		// as Array([0], len=1). A good example is ioctl(3, FIONBIO, [1]). We may also have an union int type that352		// is a represented as a struct in strace e.g.353		// sigev_value={sival_int=-2123636944, sival_ptr=0x7ffd816bdf30}354		// For now we choose the first option355		if len(a.Elems) == 0 {356			log.Logf(2, "parsing const type, got array type with len 0")357			return syzType.DefaultArg(dir)358		}359		return ctx.genConst(syzType, dir, a.Elems[0])360	case *parser.BufferType:361		// strace decodes some arguments as hex strings because those values are network ordered362		// e.g. sin_port or sin_addr fields of sockaddr_in.363		// network order is big endian byte order so if the len of byte array is 1, 2, 4, or 8 then364		// it is a good chance that we are decoding one of those fields. If it isn't, then most likely365		// we have an error i.e. a sockaddr_un struct passed to a connect call with an inet file descriptor366		var val uint64367		toUint64 := binary.LittleEndian.Uint64368		toUint32 := binary.LittleEndian.Uint32369		toUint16 := binary.LittleEndian.Uint16370		if syzType.Format() == prog.FormatBigEndian {371			toUint64 = binary.BigEndian.Uint64372			toUint32 = binary.BigEndian.Uint32373			toUint16 = binary.BigEndian.Uint16374		}375		switch len(a.Val) {376		case 8:377			val = toUint64([]byte(a.Val))378		case 4:379			val = uint64(toUint32([]byte(a.Val)))380		case 2:381			val = uint64(toUint16([]byte(a.Val)))382		case 1:383			val = uint64(a.Val[0])384		default:385			return syzType.DefaultArg(dir)386		}387		return prog.MakeConstArg(syzType, dir, val)388	default:389		log.Fatalf("unsupported type for const: %#v", traceType)390	}391	return nil392}393func (ctx *context) genResource(syzType *prog.ResourceType, dir prog.Dir, traceType parser.IrType) prog.Arg {394	if dir == prog.DirOut {395		log.Logf(2, "resource returned by call argument: %s", traceType.String())396		res := prog.MakeResultArg(syzType, dir, nil, syzType.Default())397		ctx.returnCache.cache(syzType, traceType, res)398		return res399	}400	switch a := traceType.(type) {401	case parser.Constant:402		val := a.Val()403		if arg := ctx.returnCache.get(syzType, traceType); arg != nil {404			res := prog.MakeResultArg(syzType, dir, arg.(*prog.ResultArg), syzType.Default())405			return res406		}407		res := prog.MakeResultArg(syzType, dir, nil, val)408		return res409	case *parser.GroupType:410		if len(a.Elems) == 1 {411			// For example: 5028  ioctl(3, SIOCSPGRP, [0])          = 0412			// last argument is a pointer to a resource. Strace will output a pointer to413			// a number x as [x].414			res := prog.MakeResultArg(syzType, dir, nil, syzType.Default())415			ctx.returnCache.cache(syzType, a.Elems[0], res)416			return res417		}418		log.Fatalf("generating resource type from GroupType with %d elements", len(a.Elems))419	default:420		log.Fatalf("unsupported type for resource: %#v", traceType)421	}422	return nil423}424func (ctx *context) parseProc(syzType *prog.ProcType, dir prog.Dir, traceType parser.IrType) prog.Arg {425	switch a := traceType.(type) {426	case parser.Constant:427		val := a.Val()428		if val >= syzType.ValuesPerProc {429			return prog.MakeConstArg(syzType, dir, syzType.ValuesPerProc-1)430		}431		return prog.MakeConstArg(syzType, dir, val)432	case *parser.BufferType:433		// Again probably an error case434		// Something like the following will trigger this435		// bind(3, {sa_family=AF_INET, sa_data="\xac"}, 3) = -1 EINVAL(Invalid argument)436		return syzType.DefaultArg(dir)437	default:438		log.Fatalf("unsupported type for proc: %#v", traceType)439	}440	return nil441}442func (ctx *context) addr(syzType prog.Type, dir prog.Dir, size uint64, data prog.Arg) prog.Arg {443	return prog.MakePointerArg(syzType, dir, ctx.builder.Allocate(size, data.Type().Alignment()), data)444}445func shouldSkip(c *parser.Syscall) bool {446	switch c.CallName {447	case "write":448		// We skip all writes to stdout and stderr because they can corrupt our crash summary.449		// Also there will be nothing on stdin, so any reads will hang.450		switch a := c.Args[0].(type) {451		case parser.Constant:452			if a.Val() <= 2 {453				return true454			}455		}456	}...

Dir

Using AI Code Generation

1import (2func main() {3    wd, err := os.Getwd()4    if err != nil {5        fmt.Println(err)6        os.Exit(1)7    }8    fmt.Println("Working directory:", wd)9    ex, err := os.Executable()10    if err != nil {11        fmt.Println(err)12        os.Exit(1)13    }14    fmt.Println("Executable path:", ex)15    exPath := filepath.Dir(ex)16    fmt.Println("Executable directory:", exPath)17}

Dir

Using AI Code Generation

1import (2func main() {3	dir, err := os.Getwd()4	if err != nil {5		fmt.Println(err)6	}7	fmt.Println("Current working directory is: ", dir)8	err = os.Chdir("..")9	if err != nil {10		fmt.Println(err)11	}12	fmt.Println("Changed working directory to parent directory")13	dir, err = os.Getwd()14	if err != nil {15		fmt.Println(err)16	}17	fmt.Println("Current working directory is: ", dir)18	err = os.Chdir(dir)19	if err != nil {20		fmt.Println(err)21	}22	fmt.Println("Changed working directory to specified directory")23	dir, err = os.Getwd()24	if err != nil {25		fmt.Println(err)26	}27	fmt.Println("Current working directory is: ", dir)28	err = os.Chdir(dir)29	if err != nil {30		fmt.Println(err)31	}32	fmt.Println("Changed working directory to specified directory")33	dir, err = os.Getwd()34	if err != nil {35		fmt.Println(err)36	}37	fmt.Println("Current working directory is: ", dir)38	err = os.Chdir(dir)39	if err != nil {40		fmt.Println(err)41	}42	fmt.Println("Changed working directory to specified directory")43	dir, err = os.Getwd()44	if err != nil {45		fmt.Println(err)46	}47	fmt.Println("Current working directory is: ", dir)48	err = os.Chdir(dir)49	if err != nil {50		fmt.Println(err)51	}52	fmt.Println("Changed working directory to specified directory")53	dir, err = os.Getwd()54	if err != nil {55		fmt.Println(err)56	}57	fmt.Println("Current working directory is: ", dir

Dir

Using AI Code Generation

1import (2func main() {3	path, err := os.Getwd()4	if err != nil {5		fmt.Println(err)6	}7	dir := filepath.Dir(path)8	fmt.Println("Directory is:", dir)9}10import (11func main() {12	path, err := os.Getwd()13	if err != nil {14		fmt.Println(err)15	}16	base := filepath.Base(path)17	fmt.Println("Base is:", base)18}19import (20func main() {21	path, err := os.Getwd()22	if err != nil {23		fmt.Println(err)24	}25	abs := filepath.IsAbs(path)26	fmt.Println("Is Absolute path:", abs)27}28import (29func main() {30	path, err := os.Getwd()31	if err != nil {32		fmt.Println(err)33	}34	dir, file := filepath.Split(path)35	fmt.Println("Directory is:", dir)36	fmt.Println("File is:", file)37}38import (39func main() {

Dir

Using AI Code Generation

1import (2func main() {3    path, err := exec.LookPath(os.Args[0])4    if err != nil {5        panic(err)6    }7    abspath, err := filepath.Abs(path)8    if err != nil {9        panic(err)10    }11    dir := filepath.Dir(abspath)12    fmt.Println(dir)13}

Dir

Using AI Code Generation

1import (2func main() {3	dir := filepath.Dir(prog)4	fmt.Println("Dir:", dir)5}6import (7func main() {8	base := filepath.Base(prog)9	fmt.Println("Base:", base)10}11import (12func main() {13	abs := filepath.IsAbs(prog)14	fmt.Println("IsAbs:", abs)15}16import (17func main() {18	abs, err := filepath.Abs(prog)19	if err != nil {20		fmt.Println("Error:", err)21	}22	fmt.Println("Abs:", abs)23}24import (25func main() {26	abs, err := filepath.Abs(prog)27	if err != nil {28		fmt.Println("Error:", err)29	}30	rel, err := filepath.Rel("/Users/saikumar", abs)31	if err != nil {32		fmt.Println("Error:", err)33	}34	fmt.Println("Rel:", rel)35}36import (37func main() {38	dir, file := filepath.Split(prog)39	fmt.Println("Dir:", dir)40	fmt.Println("File:", file)41}

Dir

Using AI Code Generation

1import (2func main() {3	prog := filepath.Base(os.Args[0])4	dir := filepath.Dir(os.Args[0])5	fmt.Printf("Program name: %s\n", prog)6	fmt.Printf("Directory path: %s\n", dir)7}8import (9func main() {10	prog := filepath.Base(os.Args[0])11	dir := filepath.Dir(os.Args[0])12	abs, err := filepath.Abs(dir)13	if err != nil {14		fmt.Println(err)15	}16	fmt.Printf("Program name: %s\n", prog)17	fmt.Printf("Directory path: %s\n", dir)18	fmt.Printf("Absolute path: %s\n", abs)19}20import (21func main() {22	prog := filepath.Base(os.Args[0])23	dir := filepath.Dir(os.Args[0])24	abs, err := filepath.Abs(dir)25	if err != nil {26		fmt.Println(err)27	}28	rel, err := filepath.Rel(abs, dir)29	if err != nil {30		fmt.Println(err)31	}32	fmt.Printf("Program name: %s\n", prog)33	fmt.Printf("Directory path: %s\n", dir)34	fmt.Printf("Absolute path: %s\n", abs)35	fmt.Printf("Relative path: %s\n", rel)36}37import (38func main() {39	prog := filepath.Base(os.Args[0])40	dir := filepath.Dir(os.Args[0])41	abs, err := filepath.Abs(dir)42	if err != nil {43		fmt.Println(err)

Dir

Using AI Code Generation

1import (2func main() {3 path, _ := os.Getwd()4 fmt.Println(filepath.Base(path))5 fmt.Println(filepath.Dir(path))6}

Dir

Using AI Code Generation

1import (2func main() {3    dir := filepath.Dir(path)4    fmt.Println(dir)5}6import (7func main() {8    base := filepath.Base(path)9    fmt.Println(base)10}11import (12func main() {13    ext := filepath.Ext(path)14    fmt.Println(ext)15}16import (17func main() {18    abs := filepath.IsAbs(path)19    fmt.Println(abs)20}21import (22func main() {23    path := filepath.Join(path1, path2)24    fmt.Println(path)25}

Dir

Using AI Code Generation

1import (2func main() {3	fmt.Println(filepath.Dir("/home/rajat/go/src/rajat.com"))4}5import (6func main() {7	fmt.Println(filepath.Glob("/home/rajat/go/src/rajat.com/*.go"))8}9import (10func main() {11	fmt.Println(filepath.IsAbs("/home/rajat/go/src/rajat.com"))12}13import (14func main() {15	fmt.Println(filepath.Join("/home/rajat/go/src/rajat.com", "1.go"))16}17import (18func main() {19	fmt.Println(filepath.Match("/home/rajat/go/src/rajat.com/*.go", "/home/rajat/go/src/rajat.com/1.go"))20}21import (22func main() {23	fmt.Println(filepath.Rel("/home/rajat/go/src/rajat.com", "/home/rajat/go/src/rajat.com/1.go"))24}25import (26func main() {27	fmt.Println(filepath.Split("/home/rajat/go/src/rajat.com/1.go"))28}

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