How to use MakeReturnArg method of prog Package

Best Syzkaller code snippet using prog.MakeReturnArg

vmaCallHandlers.go

Source:vmaCallHandlers.go

...32}33func parseMmap(mmap *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {34	call := &prog.Call{35		Meta: mmap,36		Ret:  prog.MakeReturnArg(mmap.Ret),37	}38	ctx.CurrentSyzCall = call39	length := (parseLength(syscall.Args[1], ctx)/ctx.Target.PageSize + 1) * ctx.Target.PageSize //RoundUp PageSize40	log.Logf(3, "mmap call: %#v requires %d memory", syscall, length)41	addrArg, start := parseAddr(length, mmap.Args[0], syscall.Args[0], ctx)42	lengthArg := prog.MakeConstArg(mmap.Args[1], length)43	protArg := parseFlags(mmap.Args[2], syscall.Args[2], ctx, false)44	flagArg := parseFlags(mmap.Args[3], syscall.Args[3], ctx, true)45	fdArg := parseFd(mmap.Args[4], syscall.Args[4], ctx)46	call.Args = []prog.Arg{47		addrArg,48		lengthArg,49		protArg,50		flagArg,51		fdArg,52		prog.MakeConstArg(mmap.Args[5], 0),53	}54	//All mmaps have fixed mappings in syzkaller55	ctx.Tracker.createMapping(call, len(ctx.Prog.Calls), call.Args[0], start, start+length)56	return call57}58func parseMremap(mremap *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {59	call := &prog.Call{60		Meta: mremap,61		Ret:  prog.MakeReturnArg(mremap.Ret),62	}63	ctx.CurrentSyzCall = call64	oldAddrArg, start := parseAddr(ctx.Target.PageSize, mremap.Args[0], syscall.Args[0], ctx)65	oldSz := parseLength(syscall.Args[1], ctx)66	newSz := parseLength(syscall.Args[2], ctx)67	oldSzArg := prog.MakeConstArg(mremap.Args[1], oldSz)68	newSzArg := prog.MakeConstArg(mremap.Args[2], newSz)69	flagArg := parseFlags(mremap.Args[3], syscall.Args[3], ctx, true)70	var destAddrArg prog.Arg71	var destAddr uint6472	if len(syscall.Args) > 4 {73		destAddrArg, destAddr = parseAddr(ctx.Target.PageSize, mremap.Args[4], syscall.Args[4], ctx)74	} else {75		straceAddrArg := parser.NewIntsType([]int64{syscall.Ret})76		destAddrArg, destAddr = parseAddr(ctx.Target.PageSize, mremap.Args[4], straceAddrArg, ctx)77	}78	addDependency(start, oldSz, oldAddrArg, ctx)79	call.Args = []prog.Arg{80		oldAddrArg,81		oldSzArg,82		newSzArg,83		flagArg,84		destAddrArg,85	}86	//All mmaps have fixed mappings in syzkaller87	ctx.Tracker.createMapping(call, len(ctx.Prog.Calls), call.Args[4], destAddr, destAddr+newSz)88	return call89}90func parseMsync(msync *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {91	var length uint6492	call := &prog.Call{93		Meta: msync,94		Ret:  prog.MakeReturnArg(msync.Ret),95	}96	ctx.CurrentSyzCall = call97	addrArg, address := parseAddr(ctx.Target.PageSize, msync.Args[0], syscall.Args[0], ctx)98	length = parseLength(syscall.Args[1], ctx)99	lengthArg := prog.MakeConstArg(msync.Args[1], length)100	protArg := parseFlags(msync.Args[2], syscall.Args[2], ctx, false)101	addDependency(address, length, addrArg, ctx)102	call.Args = []prog.Arg{103		addrArg,104		lengthArg,105		protArg,106	}107	return call108}109func parseMprotect(mprotect *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {110	call := &prog.Call{111		Meta: mprotect,112		Ret:  prog.MakeReturnArg(mprotect.Ret),113	}114	ctx.CurrentSyzCall = call115	addrArg, address := parseAddr(ctx.Target.PageSize, mprotect.Args[0], syscall.Args[0], ctx)116	length := parseLength(syscall.Args[1], ctx)117	lengthArg := prog.MakeConstArg(mprotect.Args[1], length)118	protArg := parseFlags(mprotect.Args[2], syscall.Args[2], ctx, false)119	addDependency(address, length, addrArg, ctx)120	call.Args = []prog.Arg{121		addrArg,122		lengthArg,123		protArg,124	}125	return call126}127func parseMunmap(munmap *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {128	call := &prog.Call{129		Meta: munmap,130		Ret:  prog.MakeReturnArg(munmap.Ret),131	}132	ctx.CurrentSyzCall = call133	addrArg, address := parseAddr(ctx.Target.PageSize, munmap.Args[0], syscall.Args[0], ctx)134	length := parseLength(syscall.Args[1], ctx)135	lengthArg := prog.MakeConstArg(munmap.Args[1], length)136	addDependency(address, length, addrArg, ctx)137	call.Args = []prog.Arg{138		addrArg,139		lengthArg,140	}141	return call142}143func parseMadvise(madvise *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {144	call := &prog.Call{145		Meta: madvise,146		Ret:  prog.MakeReturnArg(madvise.Ret),147	}148	ctx.CurrentSyzCall = call149	addrArg, address := parseAddr(ctx.Target.PageSize, madvise.Args[0], syscall.Args[0], ctx)150	length := parseLength(syscall.Args[1], ctx)151	lengthArg := prog.MakeConstArg(madvise.Args[1], length)152	var adviceArg prog.Arg153	switch a := syscall.Args[2].(type) {154	case parser.Expression:155		adviceArg = prog.MakeConstArg(madvise.Args[2], a.Eval(ctx.Target))156	default:157		log.Fatalf("Madvise advice arg is not expression")158	}159	addDependency(address, length, addrArg, ctx)160	call.Args = []prog.Arg{161		addrArg,162		lengthArg,163		adviceArg,164	}165	return call166}167func parseMlock(mlock *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {168	call := &prog.Call{169		Meta: mlock,170		Ret:  prog.MakeReturnArg(mlock.Ret),171	}172	ctx.CurrentSyzCall = call173	addrArg, address := parseAddr(ctx.Target.PageSize, mlock.Args[0], syscall.Args[0], ctx)174	length := parseLength(syscall.Args[1], ctx)175	flagArg := prog.MakeConstArg(mlock.Args[1], length)176	addDependency(address, length, addrArg, ctx)177	call.Args = []prog.Arg{178		addrArg,179		flagArg,180	}181	return call182}183func parseMunlock(munlock *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {184	call := &prog.Call{185		Meta: munlock,186		Ret:  prog.MakeReturnArg(munlock.Ret),187	}188	ctx.CurrentSyzCall = call189	addrArg, address := parseAddr(ctx.Target.PageSize, munlock.Args[0], syscall.Args[0], ctx)190	length := parseLength(syscall.Args[1], ctx)191	flagArg := prog.MakeConstArg(munlock.Args[1], length)192	addDependency(address, length, addrArg, ctx)193	call.Args = []prog.Arg{194		addrArg,195		flagArg,196	}197	return call198}199func parseShmat(shmat *prog.Syscall, syscall *parser.Syscall, ctx *Context) *prog.Call {200	/*201	* Shmat will create a shared memory map which we should track.202	* If the second argument is NULL then shmat will create the memory map and203	* store it at that address if successful.204	 */205	shmid := uint64(0)206	var fd prog.Arg207	call := &prog.Call{208		Meta: shmat,209		Ret:  prog.MakeReturnArg(shmat.Ret),210	}211	ctx.CurrentSyzCall = call212	if arg := ctx.ReturnCache.get(shmat.Args[0], syscall.Args[0]); arg != nil {213		switch a := arg.Type().(type) {214		case *prog.ResourceType:215			fd = prog.MakeResultArg(shmat.Args[0], arg.(*prog.ResultArg), a.Default())216		default:217			log.Fatalf("Expected first argument of Shmat to be resource type. Got: %s", a.Name())218		}219	} else {220		switch a := syscall.Args[0].(type) {221		case parser.Expression:222			shmid = a.Eval(ctx.Target)223		default:224			shmid = 0225		}226		fd = prog.MakeResultArg(shmat.Args[0], nil, shmid)227	}228	addrArg, address := parseAddr(ctx.Target.PageSize, shmat.Args[1], syscall.Args[1], ctx)229	flags := parseFlags(shmat.Args[2], syscall.Args[2], ctx, false)230	call.Args = []prog.Arg{231		fd,232		addrArg,233		flags,234	}235	//Cache the mapped address since it is a resource type as well236	call.Ret = prog.MakeReturnArg(shmat.Ret)237	straceRet := parser.NewIntsType([]int64{syscall.Ret})238	ctx.ReturnCache.cache(call.Ret.Type(), straceRet, call.Ret)239	length := uint64(4096)240	if req := ctx.Tracker.findShmRequest(shmid); req != nil {241		length = req.getSize()242	}243	ctx.Tracker.createMapping(call, len(ctx.Prog.Calls), call.Args[1], address, address+length)244	return call245}246func parseAddr(length uint64, syzType prog.Type, traceType parser.IrType, ctx *Context) (prog.Arg, uint64) {247	defAddrStart := (ctx.Target.NumPages - 2) * ctx.Target.PageSize248	switch a := traceType.(type) {249	case *parser.PointerType:250		var addrStart uint64...

common.go

Source:common.go

...34		args = append(args, prog.MakeConstArg(meta.Args[i].Type, prog.DirIn, 0))35		return &prog.Call{36			Meta: meta,37			Args: args,38			Ret:  prog.MakeReturnArg(meta.Ret),39		}40	}41	return func() []*prog.Call {42		if contain {43			return []*prog.Call{44				makeMmap(^target.PageSize+1, target.PageSize, 0),45				makeMmap(0, size, protRW),46				makeMmap(size, target.PageSize, 0),47			}48		}49		return []*prog.Call{makeMmap(0, size, protRW)}50	}51}52func MakeSyzMmap(target *prog.Target) func() []*prog.Call {53	meta := target.SyscallMap["syz_mmap"]54	size := target.NumPages * target.PageSize55	return func() []*prog.Call {56		return []*prog.Call{57			{58				Meta: meta,59				Args: []prog.Arg{60					prog.MakeVmaPointerArg(meta.Args[0].Type, prog.DirIn, 0, size),61					prog.MakeConstArg(meta.Args[1].Type, prog.DirIn, size),62				},63				Ret: prog.MakeReturnArg(meta.Ret),64			},65		}66	}67}68type UnixNeutralizer struct {69	MAP_FIXED uint6470	S_IFREG   uint6471	S_IFCHR   uint6472	S_IFBLK   uint6473	S_IFIFO   uint6474	S_IFSOCK  uint6475}76func MakeUnixNeutralizer(target *prog.Target) *UnixNeutralizer {77	return &UnixNeutralizer{...

MakeReturnArg

Using AI Code Generation

1import (2func main() {3	fmt.Println(prog.MakeReturnArg())4}5func MakeReturnArg() string {6}7Now, if you want to import prog package from 2.go file, you need to import it using relative path. To import prog package, use the following command:8import "prog"9If you want to import a package from a directory that is not a subdirectory of the current directory, you need to use the following command:10import "github.com/your-username/your-repository-name/your-subdirectory-name"11In the above example, the prog package is in a subdirectory of the current directory. So, the correct way to import the prog package is:12import "prog"13import "github.com/your-username/your-repository-name/your-subdirectory-name"14For example, if you want to import the prog package from the following directory:15You need to use the following command to import the prog package:16import "github.com/your-username/your-repository-name/your-subdirectory-name"17If you want to import the prog package from the following directory:18You need to use the following command to import the prog package:19import "github.com/your-username/your-repository-name/your-subdirectory-name/your-sub-subdirectory-name"20If you want to import the prog package from the following directory:21You need to use the following command to import the prog package:22import "github.com/your-username/your-repository-name"23If you want to import the prog package from the following directory:

MakeReturnArg

Using AI Code Generation

1import (2func main() {3	slice := make([]int, 10)4	for i := 0; i < 10; i++ {5		slice[i] = rand.Intn(100)6	}7	fmt.Println(slice)8	fmt.Println("The largest number is", largest(slice))9}10func largest(slice []int) int {11	for i := 1; i < len(slice); i++ {12		if slice[i] > largest {13		}14	}15}16import (17func main() {18	slice := make([]int, 10)19	for i := 0; i < 10; i++ {20		slice[i] = rand.Intn(100)21	}22	fmt.Println(slice)23	fmt.Println("The smallest number is", smallest(slice))24}25func smallest(slice []int) int {26	for i := 1; i < len(slice); i++ {27		if slice[i] < smallest {28		}29	}30}

MakeReturnArg

Using AI Code Generation

1import (2func main() {3	fmt.Println(reflect.ValueOf(3).Interface())4}5import (6func main() {7	fmt.Println(reflect.ValueOf(3).Interface())8}9import (10func main() {11	fmt.Println(reflect.ValueOf(3).Interface())12}13import (14func main() {15	fmt.Println(reflect.ValueOf(3).Interface())16}17import (18func main() {19	fmt.Println(reflect.ValueOf(3).Interface())20}21import (22func main() {23	fmt.Println(reflect.ValueOf(3).Interface())24}25import (

MakeReturnArg

Using AI Code Generation

1import (2func main() {3	target, err := targets.Get("linux", "amd64")4	if err != nil {5		fmt.Println(err)6	}7	p := prog.MakeProg(target)8	f := prog.MakeFile("test.c")9	fn := prog.MakeFunc("test")10	b := prog.MakeInstrBlock()11	c := prog.MakeCall(target.Syscalls[1])12	r := prog.MakeReturnArg(target.Syscalls[1].Ret)13	b.Instrs = append(b.Instrs, c)14	fn.Blocks = append(fn.Blocks, b)15	f.Funcs = append(f.Funcs, fn)16	p.Files = append(p.Files, f)17	fmt.Println(p.Serialize())18}

MakeReturnArg

Using AI Code Generation

1import "fmt"2func main() {3    p := prog{1, 2}4    fmt.Println(p)5    p2 := p.MakeReturnArg()6    fmt.Println(p2)7}8{1 2}9{1 2}10import "fmt"11type prog struct {12}13func (p *prog) change() {14}15func main() {16    p := prog{1, 2}17    fmt.Println(p)18    p.change()19    fmt.Println(p)20}21{1 2}22{6 7}23import "fmt"24type prog struct {25}26func (p prog) change() {27}28func main() {29    p := prog{1, 2}30    fmt.Println(p)31    p.change()32    fmt.Println(p)33}34{1 2}35{1 2}

MakeReturnArg

Using AI Code Generation

1import (2func main() {3    p := gobuild.NewProg()4    f := p.MakeFunc("add", []gobuild.Arg{5        p.MakeArg("int", "arg1"),6        p.MakeArg("string", "arg2"),7    }, []gobuild.Arg{8        p.MakeReturnArg("float", "result"),9    })10    f.AddReturn(p.MakeConst("float", "3.14"))11    file := p.MakeFile("add.go")12    file.AddFunc(f)13    fmt.Println(file)14}15import (16func main() {17    p := gobuild.NewProg()18    f := p.MakeFunc("add", []gobuild.Arg{19        p.MakeArg("int", "arg1"),20        p.MakeArg("string", "arg2"),21    }, []gobuild.Arg{22        p.MakeReturnArg("float", "result"),23    })24    f.AddReturn(p.MakeConst("float", "3.14"))

MakeReturnArg

Using AI Code Generation

1import (2func main() {3	var k reflect.Value = reflect.MakeReturnArg(reflect.TypeOf(i))4	fmt.Printf("%v", k)5}6import (7func main() {8	var i reflect.Value = reflect.MakeSlice(reflect.TypeOf([]int{1, 2, 3}), 3, 3)9	fmt.Printf("%v", i)10}11import (12func main() {13	var i reflect.Value = reflect.MakeString("Hello World")14	fmt.Printf("%v", i)15}16import (17func main() {

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