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Golang Type.Default方法代碼示例

本文整理匯總了Golang中github.com/google/syzkaller/sys.Type.Default方法的典型用法代碼示例。如果您正苦於以下問題：Golang Type.Default方法的具體用法？Golang Type.Default怎麽用？Golang Type.Default使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類github.com/google/syzkaller/sys.Type的用法示例。


在下文中一共展示了Type.Default方法的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: generateArg

func (r *randGen) generateArg(s *state, typ sys.Type, dir ArgDir) (arg *Arg, calls []*Call) {
	if dir == DirOut {
		// No need to generate something interesting for output scalar arguments.
		// But we still need to generate the argument itself so that it can be referenced
		// in subsequent calls. For the same reason we do generate pointer/array/struct
		// output arguments (their elements can be referenced in subsequent calls).
		switch typ.(type) {
		case sys.IntType, sys.FlagsType, sys.ConstType, sys.StrConstType, sys.FileoffType, sys.ResourceType:
			return constArg(0), nil
		}
	}

	if typ.Optional() && r.oneOf(5) {
		if _, ok := typ.(sys.BufferType); ok {
			panic("impossible") // parent PtrType must be Optional instead
		}
		return constArg(typ.Default()), nil
	}

	switch a := typ.(type) {
	case sys.ResourceType:
		r.choose(
			1, func() {
				special := a.SpecialValues()
				arg = constArg(special[r.Intn(len(special))])
			},
			90, func() {
				// Get an existing resource.
				var allres []*Arg
				for name1, res1 := range s.resources {
					if sys.IsCompatibleResource(a.Desc.Name, name1) ||
						r.oneOf(20) && sys.IsCompatibleResource(a.Desc.Kind[0], name1) {
						allres = append(allres, res1...)
					}
				}
				if len(allres) != 0 {
					arg = resultArg(allres[r.Intn(len(allres))])
				} else {
					arg, calls = r.createResource(s, a)
				}
			},
			5, func() {
				// Create a new resource.
				arg, calls = r.createResource(s, a)
			},
		)
		return arg, calls
	case sys.FileoffType:
		// TODO: can do better
		var arg *Arg
		r.choose(
			90, func() { arg = constArg(0) },
			10, func() { arg = constArg(r.rand(100)) },
			1, func() { arg = constArg(r.randInt()) },
		)
		return arg, nil
	case sys.BufferType:
		switch a.Kind {
		case sys.BufferBlobRand, sys.BufferBlobRange:
			sz := r.randBufLen()
			if a.Kind == sys.BufferBlobRange {
				sz = r.randRange(int(a.RangeBegin), int(a.RangeEnd))
			}
			data := make([]byte, sz)
			if dir != DirOut {
				for i := range data {
					data[i] = byte(r.Intn(256))
				}
			}
			return dataArg(data), nil
		case sys.BufferString:
			data := r.randString(s)
			return dataArg(data), nil
		case sys.BufferFilesystem:
			data := r.filesystem(s)
			return dataArg(data), nil
		case sys.BufferSockaddr:
			data := r.sockaddr(s)
			if dir == DirOut {
				for i := range data {
					data[i] = 0
				}
			}
			return dataArg(data), nil
		case sys.BufferAlgType:
			data := r.algType(s)
			if dir == DirOut {
				for i := range data {
					data[i] = 0
				}
			}
			return dataArg(data), nil
		case sys.BufferAlgName:
			data := r.algName(s)
			if dir == DirOut {
				for i := range data {
					data[i] = 0
				}
			}
			return dataArg(data), nil
//.........這裏部分代碼省略.........
開發者ID:sploving，項目名稱:syzkaller，代碼行數:101，代碼來源:rand.go

示例2: returnArg

func returnArg(t sys.Type) *Arg {
	if t != nil {
		return &Arg{Type: t, Kind: ArgReturn, Val: t.Default()}
	}
	return &Arg{Type: t, Kind: ArgReturn}
}
開發者ID:google，項目名稱:syzkaller，代碼行數:6，代碼來源:prog.go

示例3: generateArg

func (r *randGen) generateArg(s *state, typ sys.Type, dir ArgDir, sizes map[string]*Arg) (arg, size *Arg, calls []*Call) {
	if dir == DirOut {
		// No need to generate something interesting for output scalar arguments.
		// But we still need to generate the argument itself so that it can be referenced
		// in subsequent calls. For the same reason we do generate pointer/array/struct
		// output arguments (their elements can be referenced in subsequent calls).
		switch typ.(type) {
		case sys.IntType, sys.FlagsType, sys.ConstType, sys.StrConstType, sys.FileoffType, sys.ResourceType:
			return constArg(0), nil, nil
		}
	}

	if typ.Optional() && r.oneOf(10) {
		if _, ok := typ.(sys.BufferType); ok {
			panic("impossible") // parent PtrType must be Optional instead
		}
		return constArg(typ.Default()), constArg(0), nil
	}

	switch a := typ.(type) {
	case sys.ResourceType:
		r.choose(
			1, func() {
				special := a.SpecialValues()
				arg = constArg(special[r.Intn(len(special))])
			},
			90, func() {
				// Get an existing resource.
				if ress := s.resources[a.Kind]; ress != nil {
					allres := ress[a.Subkind]
					allres = append(allres, ress[sys.ResAny]...)
					if a.Subkind == sys.ResAny || r.oneOf(10) {
						for _, v := range ress {
							allres = append(allres, v...)
						}
					}
					if len(allres) != 0 {
						// TODO: negative PIDs mean process group,
						// we should be able to negate an existing PID.
						arg = resultArg(allres[r.Intn(len(allres))])
					}
				}
				if arg == nil {
					arg, calls = r.createResource(s, a)
				}
			},
			5, func() {
				// Create a new resource.
				arg, calls = r.createResource(s, a)
			},
		)
		return arg, nil, calls
	case sys.FileoffType:
		// TODO: can do better
		var arg *Arg
		r.choose(
			90, func() { arg = constArg(0) },
			10, func() { arg = constArg(r.rand(100)) },
			1, func() { arg = constArg(r.randInt()) },
		)
		return arg, nil, nil
	case sys.BufferType:
		switch a.Kind {
		case sys.BufferBlob:
			sz := r.randBufLen()
			if dir == DirOut {
				return nil, constArg(sz), nil
			}
			data := make([]byte, sz)
			for i := range data {
				data[i] = byte(r.Intn(256))
			}
			return dataArg(data), constArg(sz), nil
		case sys.BufferString:
			data := r.randString(s)
			return dataArg(data), constArg(uintptr(len(data))), nil
		case sys.BufferFilesystem:
			data := r.filesystem(s)
			return dataArg(data), constArg(uintptr(len(data))), nil
		case sys.BufferSockaddr:
			data := r.sockaddr(s)
			if dir == DirOut {
				return nil, constArg(uintptr(len(data))), nil
			}
			return dataArg(data), constArg(uintptr(len(data))), nil
		case sys.BufferAlgType:
			data := r.algType(s)
			if dir == DirOut {
				for i := range data {
					data[i] = 0
				}
			}
			return dataArg(data), constArg(uintptr(len(data))), nil
		case sys.BufferAlgName:
			data := r.algName(s)
			if dir == DirOut {
				for i := range data {
					data[i] = 0
				}
			}
//.........這裏部分代碼省略.........
開發者ID:pmarkowsky，項目名稱:syzkaller，代碼行數:101，代碼來源:rand.go

示例4: generateArg

func (r *randGen) generateArg(s *state, typ sys.Type, dir ArgDir, sizes map[string]*Arg) (arg, size *Arg, calls []*Call) {
	if dir == DirOut {
		// No need to generate something interesting for output scalar arguments.
		// But we still need to generate the argument itself so that it can be referenced
		// in subsequent calls. For the same reason we do generate pointer/array/struct
		// output arguments (their elements can be referenced in subsequent calls).
		switch typ.(type) {
		case sys.IntType, sys.FlagsType, sys.FileoffType, sys.ResourceType:
			return constArg(0), nil, nil
		}
	}

	if typ.Optional() && r.oneOf(10) {
		if _, ok := typ.(sys.BufferType); ok {
			panic("impossible") // parent PtrType must be Optional instead
		}
		return constArg(typ.Default()), constArg(0), nil
	}

	switch a := typ.(type) {
	case sys.ResourceType:
		r.choose(
			1, func() {
				special := a.SpecialValues()
				arg = constArg(special[r.Intn(len(special))])
			},
			90, func() {
				// Get an existing resource.
				if ress := s.resources[a.Kind]; ress != nil {
					allres := ress[a.Subkind]
					allres = append(allres, ress[sys.ResAny]...)
					if a.Subkind == sys.ResAny || r.oneOf(10) {
						for _, v := range ress {
							allres = append(allres, v...)
						}
					}
					if len(allres) != 0 {
						// TODO: negative PIDs mean process group,
						// we should be able to negate an existing PID.
						arg = resultArg(allres[r.Intn(len(allres))])
					}
				}
				if arg == nil {
					arg, calls = r.createResource(s, a)
				}
			},
			10, func() {
				// Create a new resource.
				arg, calls = r.createResource(s, a)
			},
		)
		return arg, nil, calls
	case sys.FileoffType:
		// TODO: can do better
		var arg *Arg
		r.choose(
			90, func() { arg = constArg(0) },
			10, func() { arg = constArg(r.rand(100)) },
			1, func() { arg = constArg(r.randInt()) },
		)
		return arg, nil, nil
	case sys.BufferType:
		switch a.Kind {
		case sys.BufferBlob:
			sz := r.randBufLen()
			if dir == DirOut {
				return nil, constArg(sz), nil
			}
			data := make([]byte, sz)
			for i := range data {
				data[i] = byte(r.Intn(256))
			}
			return dataArg(data), constArg(sz), nil
		case sys.BufferString:
			data := r.randString(s)
			return dataArg(data), constArg(uintptr(len(data))), nil
		case sys.BufferSockaddr:
			data := r.sockaddr(s)
			if dir == DirOut {
				return nil, constArg(uintptr(len(data))), nil
			}
			return dataArg(data), constArg(uintptr(len(data))), nil
		default:
			panic("unknown buffer kind")
		}
	case sys.VmaType:
		npages := r.randPageCount()
		arg := r.randPageAddr(s, npages, nil)
		return arg, pageSizeArg(npages, 0), nil
	case sys.FlagsType:
		return constArg(r.flags(a.Vals)), nil, nil
	case sys.IntType:
		v := r.randInt()
		if a.Limit != 0 && !r.oneOf(100) {
			v %= a.Limit
		}
		return constArg(v), nil, nil
	case sys.FilenameType:
		filename := r.filename(s)
		return dataArg([]byte(filename)), nil, nil
//.........這裏部分代碼省略.........
開發者ID:KurSh，項目名稱:syzkaller，代碼行數:101，代碼來源:rand.go


注：本文中的github.com/google/syzkaller/sys.Type.Default方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。