How to use init method of vm Package

Best Syzkaller code snippet using vm.init

vm.go

Source:vm.go

...38}39func newVM(m binary.Module, mm instance.Map) *vm {40	vm := &vm{module: m, debug: false}41	vm.linkImports(mm)42	vm.initFuncs()43	vm.initTableAndMem()44	vm.initGlobals()45	vm.execStartFunc()46	return vm47}48/* linking */49func (vm *vm) linkImports(mm instance.Map) {50	for _, imp := range vm.module.ImportSec {51		if m := mm[imp.Module]; m == nil {52			panic(fmt.Errorf("module not found: " + imp.Module))53		} else {54			vm.linkImport(m, imp)55		}56	}57}58func (vm *vm) linkImport(m instance.Module, imp binary.Import) {59	exported := m.GetMember(imp.Name)60	if exported == nil {61		panic(fmt.Errorf("unknown import: %s.%s",62			imp.Module, imp.Name))63	}64	typeMatched := false65	switch x := exported.(type) {66	case instance.Function:67		if imp.Desc.Tag == binary.ImportTagFunc {68			expectedFT := vm.module.TypeSec[imp.Desc.FuncType]69			typeMatched = isFuncTypeMatch(expectedFT, x.Type())70			vm.funcs = append(vm.funcs, newExternalFunc(expectedFT, x))71		}72	case instance.Table:73		if imp.Desc.Tag == binary.ImportTagTable {74			typeMatched = isLimitsMatch(imp.Desc.Table.Limits, x.Type().Limits)75			vm.table = x76		}77	case instance.Memory:78		if imp.Desc.Tag == binary.ImportTagMem {79			typeMatched = isLimitsMatch(imp.Desc.Mem, x.Type())80			vm.memory = x81		}82	case instance.Global:83		if imp.Desc.Tag == binary.ImportTagGlobal {84			typeMatched = isGlobalTypeMatch(imp.Desc.Global, x.Type())85			vm.globals = append(vm.globals, x)86		}87	}88	if !typeMatched {89		panic(fmt.Errorf("incompatible import type: %s.%s",90			imp.Module, imp.Name))91	}92}93/* init */94func (vm *vm) initFuncs() {95	for i, ftIdx := range vm.module.FuncSec {96		ft := vm.module.TypeSec[ftIdx]97		code := vm.module.CodeSec[i]98		vm.funcs = append(vm.funcs, newInternalFunc(vm, ft, code))99	}100}101func (vm *vm) initTableAndMem() {102	if len(vm.module.TableSec) > 0 {103		vm.table = newTable(vm.module.TableSec[0])104	}105	if len(vm.module.MemSec) > 0 {106		vm.memory = newMemory(vm.module.MemSec[0])107	}108	elemOffsets := vm.calcElemOffsets()109	dataOffsets := vm.calcDataOffsets()110	vm.initTable(elemOffsets)111	vm.initMemory(dataOffsets)112}113func (vm *vm) calcElemOffsets() []uint32 {114	offsets := make([]uint32, len(vm.module.ElemSec))115	for i, elem := range vm.module.ElemSec {116		vm.execConstExpr(elem.Offset)117		offset := vm.popU32()118		dataLen := len(elem.Init)119		upperBound := vm.table.Type().Limits.Min120		if offset > 0 || dataLen > 0 {121			if uint64(offset)+uint64(dataLen) > uint64(upperBound) {122				panic(fmt.Errorf("elements segment does not fit"))123			}124		}125		offsets[i] = offset126	}127	return offsets128}129func (vm *vm) calcDataOffsets() []uint64 {130	offsets := make([]uint64, len(vm.module.DataSec))131	for i, data := range vm.module.DataSec {132		vm.execConstExpr(data.Offset)133		offset := uint64(vm.popU32())134		dataLen := uint64(len(data.Init))135		upperBound := uint64(vm.memory.Type().Min) * binary.PageSize136		if offset > 0 || dataLen > 0 {137			if offset+dataLen > upperBound {138				panic(fmt.Errorf("data segment does not fit"))139			}140		}141		offsets[i] = offset142	}143	return offsets144}145func (vm *vm) initTable(offsets []uint32) {146	for i, elem := range vm.module.ElemSec {147		for j, fIdx := range elem.Init {148			offset := offsets[i] + uint32(j)149			f := vm.funcs[fIdx]150			vm.table.SetElem(offset, f)151		}152	}153}154func (vm *vm) initMemory(offsets []uint64) {155	for i, data := range vm.module.DataSec {156		vm.memory.Write(offsets[i], data.Init)157	}158}159func (vm *vm) initGlobals() {160	for _, g := range vm.module.GlobalSec {161		initVal := uint64(0)162		if g.Init != nil {163			vm.execConstExpr(g.Init)164			initVal = vm.popU64()165		}166		g := newGlobal(g.Type, initVal)167		vm.globals = append(vm.globals, g)168	}169}170func (vm *vm) execConstExpr(expr []binary.Instruction) {171	for _, instr := range expr {172		vm.execInstr(instr)173	}174}175func (vm *vm) execStartFunc() {176	if vm.module.StartSec != nil {177		idx := *vm.module.StartSec178		vm.funcs[idx].call(nil)179	}180}...

cli.go

Source:cli.go

...9	cmd_password = app.Flag("password", "Password").Envar("govirt_password").Required().String()10	cmd_url      = app.Flag("url", "URL to API (eg, https://1.2.3.4/ovirt-engine/api)").Envar("govirt_url").Required().String()11	cmd_version = app.Command("version", "prints version and exits")12	cmd_update  = app.Command("update", "updates to latest version and exits")13	// init14	cmd_cloud_init             = app.Command("cloud-init", " ")15	cmd_cloud_init_create      = cmd_cloud_init.Command("create", "generate cloud-init configuration")16	cmd_cloud_init_create_fqdn = cmd_cloud_init_create.Flag("fqdn", "fqdn").Envar("govirt_cloud_init_create_fqdn").Required().String()17	// cmd_cloud_init_create_output        = cmd_cloud_init_create.Flag("output", "output file").Envar("govirt_cloud_init_create_output").Envar("govirt_cloud_init_create_output").Default("script.yml").String()18	cmd_cloud_init_create_cidr          = cmd_cloud_init_create.Flag("cidr", "IPv4 address in CIDR notation to give vm on startup (eg, 192.168.0.99/24)").Envar("govirt_cloud_init_create_cidr").String()19	cmd_cloud_init_create_gateway4      = cmd_cloud_init_create.Flag("gateway4", "IPv4 address to give vm on startup (eg, 192.168.0.1)").Envar("govirt_cloud_init_create_gateway").String()20	cmd_cloud_init_create_dns_addresses = cmd_cloud_init_create.Flag("dns-addresses", "comma-separated list of IPv4 addresses to give vm on startup").Envar("govirt_cloud_init_create_dns_addresses").Default("1.1.1.1,1.0.0.1,8.8.8.8").String()21	cmd_cloud_init_create_user          = cmd_cloud_init_create.Flag("user", "user to customize").Envar("govirt_cloud_init_create_user").Default("root").String()22	cmd_cloud_init_create_ssh_key       = cmd_cloud_init_create.Flag("ssh-key", "public SSH key to go to the specified user").Envar("govirt_cloud_init_create_ssh_key").String()23	cmd_cloud_init_create_nic           = cmd_cloud_init_create.Flag("nic", "name of NIC to configure").Envar("govirt_cloud_init_create_nic").Default("enp1s0").String()24	// vm25	cmd_vm = app.Command("vm", "virtual machines")26	cmd_vm_create                  = cmd_vm.Command("create", "creates VM from template")27	cmd_vm_create_name             = cmd_vm_create.Flag("name", "name of vm to create").Envar("govirt_vm_create_name").Required().String()28	cmd_vm_create_cluster          = cmd_vm_create.Flag("cluster", "cluster in which to create vm").Envar("govirt_vm_create_cluster").Default("Default").String()29	cmd_vm_create_template         = cmd_vm_create.Flag("template", "template from which to create vm").Envar("govirt_vm_create_template").Required().String()30	cmd_vm_create_template_version = cmd_vm_create.Flag("template-version", "version of template from which to create vm").Envar("govirt_vm_create_template_version").Required().Int64()31	cmd_vm_create_datastore        = cmd_vm_create.Flag("datastore", "storage domain in which to create vm").Envar("govirt_vm_create_datastore").Required().String()32	cmd_vm_create_cpu              = cmd_vm_create.Flag("cpu", "cpu socket count (1 core/socket)").Envar("govirt_vm_create_cpu").Default("1").Int64()33	cmd_vm_create_memory           = cmd_vm_create.Flag("memory", "memory (RAM) in GB").Envar("govirt_vm_create_memory").Default("1").Int64()34	cmd_vm_get      = cmd_vm.Command("get", "get details of a vm")35	cmd_vm_get_name = cmd_vm_get.Flag("name", "name of vm to get info of").Envar("govirt_vm_get_name").Required().String()36	cmd_vm_rm      = cmd_vm.Command("rm", "remove a vm")37	cmd_vm_rm_name = cmd_vm_rm.Flag("name", "name of vm to remove").Envar("govirt_vm_rm_name").Required().String()38	cmd_vm_rm_yes  = cmd_vm_rm.Flag("yes", "remove vm from ovirt").Envar("govirt_vm_rm_yes").Default("false").Bool()39	cmd_vm_start        = cmd_vm.Command("start", "start virtual machine with cloud-init")40	cmd_vm_start_name   = cmd_vm_start.Flag("name", "name of vm to start").Envar("govirt_vm_start_name").Required().String()41	cmd_vm_start_init   = cmd_vm_start.Flag("init", "start with cloud-init enabled").Envar("govirt_vm_start_init").Default("false").Bool()42	cmd_vm_start_script = cmd_vm_start.Flag("script", "/path/to/cloud-init-script.yml (eg, /etc/govirt/cloud-init-script.yml)").Envar("govirt_vm_start_script").Default("cloud-init-script.yml").String()43	cmd_vm_stop       = cmd_vm.Command("stop", "shutdown virtual machine gracefully")44	cmd_vm_stop_name  = cmd_vm_stop.Flag("name", "name of vm to stop").Envar("govirt_vm_stop_name").Required().String()45	cmd_vm_stop_force = cmd_vm_stop.Flag("force", "don't wait for shutdown; pull virtual plug").Envar("govirt_vm_stop_force").Default("false").Bool()46	cmd_vm_summary = cmd_vm.Command("summary", "output summary of virtual machines")47	// storage48	cmd_storage         = app.Command("storage", "storage domains")49	cmd_storage_summary = cmd_storage.Command("summary", "output summary of storage")50	// testing51	// cmd_test = app.Command("test", "I wouldn't run this if I were you. You've been warned. No, really, it might delete your entire datacenter without prompting.")52)...

init

Using AI Code Generation

1import (2func main() {3    vm := otto.New()4    vm.Set("foo", "bar")5    value, _ := vm.Get("foo")6    fmt.Println(value)7}8import (9func main() {10    vm := otto.New()11    vm.Set("foo", "bar")12    value, _ := vm.Get("foo")13    fmt.Println(value)14}15import (16func main() {17    vm := otto.New()18    vm.Set("foo", "bar")19    value, _ := vm.Get("foo")20    fmt.Println(value)21}22import (23func main() {24    vm := otto.New()25    vm.Set("foo", "bar")26    value, _ := vm.Get("foo")27    fmt.Println(value)28}29import (30func main() {31    vm := otto.New()32    vm.Set("foo", "bar")33    value, _ := vm.Get("foo")34    fmt.Println(value)35}36import (37func main() {38    vm := otto.New()39    vm.Set("foo", "bar")40    value, _ := vm.Get("foo")41    fmt.Println(value)42}43import (44func main() {45    vm := otto.New()46    vm.Set("foo", "bar

init

Using AI Code Generation

1func main() {2    vm := otto.New()3    vm.Set("println", fmt.Println)4    vm.Set("hello", hello)5    vm.Run(`6        println(hello("World"))7}8func hello(name string) string {9}

init

Using AI Code Generation

1import (2func main() {3	fmt.Printf("Hello world from main4	vm.Init()5}6import (7func main() {8	fmt.Printf("Hello world from main9	vm.Init()10}11import (12func main() {13	fmt.Printf("Hello world from main14	vm.Init()15}16import (17func main() {18	fmt.Printf("Hello world from main19	vm.Init()20}21import (22func main() {23	fmt.Printf("Hello world from main24	vm.Init()25}26import (27func main() {28	fmt.Printf("Hello world from main29	vm.Init()30}31import (32func main() {33	fmt.Printf("Hello world from main34	vm.Init()35}36import (37func main() {38	fmt.Printf("Hello world from main39	vm.Init()40}41import (42func main() {43	fmt.Printf("Hello world from main44	vm.Init()45}46import (47func main() {48	fmt.Printf("Hello world from main49	vm.Init()50}51import (52func main() {53	fmt.Printf("Hello world from main

init

Using AI Code Generation

1func main() {2	vm := otto.New()3	vm.Run(`4        console.log("Hello");5        console.log("World");6}7func main() {8	vm := otto.New()9	vm.Run(`10        console.log("Hello");11        console.log("World");12}13func main() {14	vm := otto.New()15	vm.Run(`16        console.log("Hello");17        console.log("World");18}19func main() {20	vm := otto.New()21	vm.Run(`22        console.log("Hello");23        console.log("World");24}25func main() {26	vm := otto.New()27	vm.Run(`28        console.log("Hello");29        console.log("World");30}31func main() {32	vm := otto.New()33	vm.Run(`34        console.log("Hello");35        console.log("World");36}37func main() {38	vm := otto.New()39	vm.Run(`40        console.log("Hello");41        console.log("World");42}43func main() {44	vm := otto.New()45	vm.Run(`46        console.log("Hello");47        console.log("World");48}49func main() {50	vm := otto.New()51	vm.Run(`52        console.log("Hello");

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