How to use regenerate method of prog Package

Best Syzkaller code snippet using prog.regenerate

mutation.go

Source:mutation.go

...227		target.SanitizeCall(c)228	}229	return calls, true230}231func regenerate(r *randGen, s *state, arg Arg) (calls []*Call, retry, preserve bool) {232	var newArg Arg233	newArg, calls = r.generateArg(s, arg.Type())234	replaceArg(arg, newArg)235	return236}237func mutateInt(r *randGen, s *state, arg Arg) (calls []*Call, retry, preserve bool) {238	if r.bin() {239		return regenerate(r, s, arg)240	}241	a := arg.(*ConstArg)242	switch {243	case r.nOutOf(1, 3):244		a.Val += uint64(r.Intn(4)) + 1245	case r.nOutOf(1, 2):246		a.Val -= uint64(r.Intn(4)) + 1247	default:248		a.Val ^= 1 << uint64(r.Intn(64))249	}250	return251}252func (t *IntType) mutate(r *randGen, s *state, arg Arg, ctx ArgCtx) (calls []*Call, retry, preserve bool) {253	return mutateInt(r, s, arg)254}255func (t *FlagsType) mutate(r *randGen, s *state, arg Arg, ctx ArgCtx) (calls []*Call, retry, preserve bool) {256	return mutateInt(r, s, arg)257}258func (t *LenType) mutate(r *randGen, s *state, arg Arg, ctx ArgCtx) (calls []*Call, retry, preserve bool) {259	if !r.mutateSize(arg.(*ConstArg), *ctx.Parent) {260		retry = true261		return262	}263	preserve = true264	return265}266func (t *ResourceType) mutate(r *randGen, s *state, arg Arg, ctx ArgCtx) (calls []*Call, retry, preserve bool) {267	return regenerate(r, s, arg)268}269func (t *VmaType) mutate(r *randGen, s *state, arg Arg, ctx ArgCtx) (calls []*Call, retry, preserve bool) {270	return regenerate(r, s, arg)271}272func (t *ProcType) mutate(r *randGen, s *state, arg Arg, ctx ArgCtx) (calls []*Call, retry, preserve bool) {273	return regenerate(r, s, arg)274}275func (t *BufferType) mutate(r *randGen, s *state, arg Arg, ctx ArgCtx) (calls []*Call, retry, preserve bool) {276	a := arg.(*DataArg)277	switch t.Kind {278	case BufferBlobRand, BufferBlobRange:279		data := append([]byte{}, a.Data()...)280		minLen, maxLen := uint64(0), maxBlobLen281		if t.Kind == BufferBlobRange {282			minLen, maxLen = t.RangeBegin, t.RangeEnd283		}284		a.data = mutateData(r, data, minLen, maxLen)285	case BufferString:286		data := append([]byte{}, a.Data()...)287		if r.bin() {...

endpoint.go

Source:endpoint.go

1// Copyright 2017-2018 Authors of Cilium2//3// Licensed under the Apache License, Version 2.0 (the "License");4// you may not use this file except in compliance with the License.5// You may obtain a copy of the License at6//7//     http://www.apache.org/licenses/LICENSE-2.08//9// Unless required by applicable law or agreed to in writing, software10// distributed under the License is distributed on an "AS IS" BASIS,11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12// See the License for the specific language governing permissions and13// limitations under the License.14package launch15import (16	"bufio"17	"context"18	"fmt"19	"os"20	"os/exec"21	"path/filepath"22	"strings"23	"time"24	"github.com/cilium/cilium/api/v1/models"25	"github.com/cilium/cilium/common/addressing"26	"github.com/cilium/cilium/pkg/datapath/route"27	"github.com/cilium/cilium/pkg/endpoint"28	"github.com/cilium/cilium/pkg/endpoint/connector"29	endpointid "github.com/cilium/cilium/pkg/endpoint/id"30	"github.com/cilium/cilium/pkg/endpointmanager"31	healthPkg "github.com/cilium/cilium/pkg/health/client"32	"github.com/cilium/cilium/pkg/health/defaults"33	"github.com/cilium/cilium/pkg/k8s"34	"github.com/cilium/cilium/pkg/labels"35	"github.com/cilium/cilium/pkg/logging/logfields"36	"github.com/cilium/cilium/pkg/mtu"37	"github.com/cilium/cilium/pkg/node"38	"github.com/cilium/cilium/pkg/option"39	"github.com/cilium/cilium/pkg/pidfile"40	"github.com/vishvananda/netlink"41)42var (43	// vethName is the host-side link device name for cilium-health EP.44	vethName = "cilium_health"45	// vethPeerName is the endpoint-side link device name for cilium-health.46	vethPeerName = "cilium"47	// PidfilePath48	PidfilePath = "health-endpoint.pid"49	// client is used to ping the cilium-health endpoint as a health check.50	client *healthPkg.Client51)52func logFromCommand(cmd *exec.Cmd, netns string) error {53	scopedLog := log.WithField("netns", netns)54	stdout, err := cmd.StdoutPipe()55	if err != nil {56		return err57	}58	go func() {59		in := bufio.NewScanner(stdout)60		for in.Scan() {61			scopedLog.Debugf("%s", in.Text())62		}63	}()64	stderr, err := cmd.StderrPipe()65	if err != nil {66		return err67	}68	go func() {69		in := bufio.NewScanner(stderr)70		for in.Scan() {71			scopedLog.Infof("%s", in.Text())72		}73	}()74	return nil75}76func configureHealthRouting(netns, dev string, addressing *models.NodeAddressing) error {77	routes := []route.Route{}78	v4Routes, err := connector.IPv4Routes(addressing, mtu.GetRouteMTU())79	if err == nil {80		routes = append(routes, v4Routes...)81	} else {82		log.Debugf("Couldn't get IPv4 routes for health routing")83	}84	v6Routes, err := connector.IPv6Routes(addressing, mtu.GetRouteMTU())85	if err != nil {86		return fmt.Errorf("Failed to get IPv6 routes")87	}88	routes = append(routes, v6Routes...)89	prog := "ip"90	args := []string{"netns", "exec", netns, "bash", "-c"}91	routeCmds := []string{}92	for _, rt := range routes {93		cmd := strings.Join(rt.ToIPCommand(dev), " ")94		log.WithField("netns", netns).WithField("command", cmd).Info("Adding route")95		routeCmds = append(routeCmds, cmd)96	}97	cmd := strings.Join(routeCmds, " && ")98	args = append(args, cmd)99	log.Debugf("Running \"%s %+v\"", prog, args)100	out, err := exec.Command(prog, args...).CombinedOutput()101	if err == nil && len(out) > 0 {102		log.Warn(out)103	}104	return err105}106// PingEndpoint attempts to make an API ping request to the local cilium-health107// endpoint, and returns whether this was successful.108//109// This function must only be used from the same goroutine as LaunchAsEndpoint().110// It is safe to call PingEndpoint() before LaunchAsEndpoint() so long as the111// goroutine is the same for both calls.112func PingEndpoint() error {113	// client is shared with LaunchAsEndpoint().114	if client == nil {115		return fmt.Errorf("cilium-health endpoint hasn't yet been initialized")116	}117	_, err := client.Restapi.GetHello(nil)118	return err119}120// KillEndpoint attempts to kill any existing cilium-health endpoint if it121// exists.122//123// This is intended to be invoked in multiple situations:124// * The health endpoint has never been run before125// * The health endpoint was run during a previous run of the Cilium agent126// * The health endpoint crashed during the current run of the Cilium agent127//   and needs to be cleaned up before it is restarted.128func KillEndpoint() {129	path := filepath.Join(option.Config.StateDir, PidfilePath)130	if err := pidfile.Kill(path); err != nil {131		scopedLog := log.WithField(logfields.Path, path).WithError(err)132		scopedLog.Info("Failed to kill previous cilium-health instance")133	}134}135// CleanupEndpoint cleans up remaining resources associated with the health136// endpoint.137//138// This is expected to be called after the process is killed and the endpoint139// is removed from the endpointmanager.140func CleanupEndpoint() {141	scopedLog := log.WithField(logfields.Veth, vethName)142	if link, err := netlink.LinkByName(vethName); err == nil {143		err = netlink.LinkDel(link)144		if err != nil {145			scopedLog.WithError(err).Info("Couldn't delete cilium-health device")146		}147	} else {148		scopedLog.WithError(err).Debug("Didn't find existing device")149	}150}151// LaunchAsEndpoint launches the cilium-health agent in a nested network152// namespace and attaches it to Cilium the same way as any other endpoint,153// but with special reserved labels.154//155// CleanupEndpoint() must be called before calling LaunchAsEndpoint() to ensure156// cleanup of prior cilium-health endpoint instances.157func LaunchAsEndpoint(owner endpoint.Owner, hostAddressing *models.NodeAddressing) error {158	ip4 := node.GetIPv4HealthIP()159	ip6 := node.GetIPv6HealthIP()160	// Prepare the endpoint change request161	id := int64(addressing.CiliumIPv6(ip6).EndpointID())162	info := &models.EndpointChangeRequest{163		ID:            id,164		ContainerID:   endpointid.NewCiliumID(id),165		ContainerName: "cilium-health",166		State:         models.EndpointStateWaitingForIdentity,167		Addressing: &models.AddressPair{168			IPV6: ip6.String(),169			IPV4: ip4.String(),170		},171	}172	if _, _, err := connector.SetupVethWithNames(vethName, vethPeerName, mtu.GetDeviceMTU(), info); err != nil {173		return fmt.Errorf("Error while creating veth: %s", err)174	}175	pidfile := filepath.Join(option.Config.StateDir, PidfilePath)176	healthArgs := fmt.Sprintf("-d --admin=unix --passive --pidfile %s", pidfile)177	args := []string{info.ContainerName, info.InterfaceName, vethPeerName,178		ip6.String(), ip4.String(), "cilium-health", healthArgs}179	prog := filepath.Join(owner.GetBpfDir(), "spawn_netns.sh")180	cmd := exec.CommandContext(context.Background(), prog, args...)181	if err := logFromCommand(cmd, info.ContainerName); err != nil {182		return fmt.Errorf("Error while opening pipes to health endpoint: %s", err)183	}184	if err := cmd.Start(); err != nil {185		target := fmt.Sprintf("%s %s", prog, strings.Join(args, " "))186		return fmt.Errorf("Error spawning endpoint (%q): %s", target, err)187	}188	// Create the endpoint189	ep, err := endpoint.NewEndpointFromChangeModel(info)190	if err != nil {191		return fmt.Errorf("Error while creating endpoint model: %s", err)192	}193	ep.SetDefaultOpts(option.Config.Opts)194	// Give the endpoint a security identity195	lbls := labels.LabelHealth.DeepCopy()196	ep.UpdateLabels(owner, lbls, nil, true)197	// Wait until the cilium-health endpoint is running before setting up routes198	deadline := time.Now().Add(1 * time.Minute)199	for {200		if _, err := os.Stat(pidfile); err == nil {201			log.WithField("pidfile", pidfile).Debug("cilium-health agent running")202			break203		} else if time.Now().After(deadline) {204			return fmt.Errorf("Endpoint failed to run: %s", err)205		} else {206			time.Sleep(1 * time.Second)207		}208	}209	// Set up the endpoint routes210	if err = configureHealthRouting(info.ContainerName, vethPeerName, hostAddressing); err != nil {211		return fmt.Errorf("Error while configuring routes: %s", err)212	}213	if err := endpointmanager.AddEndpoint(owner, ep, "Create cilium-health endpoint"); err != nil {214		return fmt.Errorf("Error while adding endpoint: %s", err)215	}216	if err := ep.LockAlive(); err != nil {217		return err218	}219	if !ep.SetStateLocked(endpoint.StateWaitingToRegenerate, "initial build of health endpoint") {220		endpointmanager.Remove(ep)221		ep.Unlock()222		return fmt.Errorf("unable to transition health endpoint to WaitingToRegenerate state")223	}224	ep.Unlock()225	buildSuccessful := <-ep.Regenerate(owner, "health daemon bootstrap")226	if !buildSuccessful {227		endpointmanager.Remove(ep)228		return fmt.Errorf("unable to build health endpoint")229	}230	// Propagate health IPs to all other nodes via annotations231	if k8s.IsEnabled() {232		err := k8s.AnnotateNode(k8s.Client(), node.GetName(), nil, nil, ip4, ip6, nil)233		if err != nil {234			return fmt.Errorf("Cannot annotate node CIDR range data: %s", err)235		}236	}237	// Initialize the health client to talk to this instance. This is why238	// the caller must limit usage of this package to a single goroutine.239	client, err = healthPkg.NewClient(fmt.Sprintf("tcp://%s:%d", ip4, defaults.HTTPPathPort))240	if err != nil {241		return fmt.Errorf("Cannot establish connection to health endpoint: %s", err)242	}243	return nil244}...

regenerate

Using AI Code Generation

1import (2func main() {3	vm := otto.New()4	vm.Set("regenerate", func(call otto.FunctionCall) otto.Value {5		fmt.Println("regenerate method called")6		return otto.Value{}7	})8	vm.Run(`9		var prog = new Program();10		prog.regenerate();11}12import (13func main() {14	vm := otto.New()15	vm.Set("regenerate", func(call otto.FunctionCall) otto.Value {16		fmt.Println("regenerate method called")17		return otto.Value{}18	})19	vm.Run(`20		var prog = new Program();21		prog.regenerate();22}23import (24func main() {25	vm := otto.New()26	vm.Set("regenerate", func(call otto.FunctionCall) otto.Value {27		fmt.Println("regenerate method called")28		return otto.Value{}29	})30	vm.Run(`31		var prog = new Program();32		prog.regenerate();33}34import (35func main() {36	vm := otto.New()37	vm.Set("regenerate", func(call otto.FunctionCall) otto.Value {38		fmt.Println("regenerate method called")39		return otto.Value{}40	})41	vm.Run(`42		var prog = new Program();43		prog.regenerate();44}45import (46func main() {47	vm := otto.New()48	vm.Set("regenerate", func(call otto.FunctionCall) otto.Value {49		fmt.Println("regenerate method called")50		return otto.Value{}51	})52	vm.Run(`53		var prog = new Program();54		prog.regenerate();55}

regenerate

Using AI Code Generation

1import "fmt"2func main() {3    p := prog{1, 2}4    p.regenerate()5    fmt.Println(p)6}7import "fmt"8func main() {9    p := prog{1, 2}10    p.regenerate()11    fmt.Println(p)12}

regenerate

Using AI Code Generation

1import (2type prog struct {3}4func (p prog) regenerate() prog {5    p.age = rand.Intn(100)6}7func main() {8    p1 := prog{"James", 20}9    p1 = p1.regenerate()10    fmt.Println(p1)11}12{James 90}13import (14type prog struct {15}16func newProg() *prog {17    p := prog{"James", 20}18    p.age = rand.Intn(100)19}20func main() {21    p1 := newProg()22    fmt.Println(p1)23}24&{James 76}25import (26type prog struct {27}28func newProg() *prog {29    p := prog{"James", 20}30    p.age = rand.Intn(100)31}32func main() {33    p1 := newProg()34    fmt.Println(p1.name)35}36import (37type prog struct {38}39func main() {40    p := new(prog)41    p.age = rand.Intn(100)42    fmt.Println(p)43}44&{James 33}45import (46type prog struct {47}

regenerate

Using AI Code Generation

1import (2type prog struct {3}4func (p prog) regen() {5	fmt.Println("Regenerating...")6}7func main() {8	p1 := prog{9	}10	p1.regen()11}

regenerate

Using AI Code Generation

1import "fmt"2func main() {3    p := prog.New()4    p.Regenerate()5    fmt.Println(p)6}7import "fmt"8type Prog struct {9}10func New() *Prog {11    return &Prog{}12}13func (p *Prog) Regenerate() {14}15func (p *Prog) String() string {16    return fmt.Sprintf("prog")17}

regenerate

Using AI Code Generation

1import (2func main() {3    f, err := ioutil.TempFile("", "temp")4    if err != nil {5        fmt.Println(err)6        os.Exit(1)7    }8    defer f.Close()9    path := f.Name()10    f1, err := os.Create(path)11    if err != nil {12        fmt.Println(err)13        os.Exit(1)14    }15    defer f1.Close()16    _, err = f1.WriteString("package main17import (18func main() {19    f, err := ioutil.TempFile("", "temp")20    if err != nil {21        fmt.Println(err)22        os.Exit(1)23    }24    defer f.Close()25    path := f.Name()26    f1, err := os.Create(path)27    if err != nil {28        fmt.Println(err)29        os.Exit(1)30    }31    defer f1.Close()32    _, err = f1.WriteString("package main33import (34func main() {35    f, err := ioutil.TempFile("", "temp")36    if err != nil {37        fmt.Println(err)38        os.Exit(1)39    }40    defer f.Close()41    path := f.Name()42    f1, err := os.Create(path)43    if err != nil {44        fmt.Println(err)45        os.Exit(1)46    }47    defer f1.Close()

regenerate

Using AI Code Generation

1import (2func main() {3    re, err := regexp.Compile(`[a-zA-Z]{2,}`)4    if err != nil {5        panic(err)6    }7    slice := []string{"Hello", "World", "!"}8    for _, str := range slice {9        match := re.FindString(str)10        if match != "" {11            fmt.Println(match)12        }13    }14}15import (16func main() {17    re, err := regexp.Compile(`[a-zA-Z]{2,}`)18    if err != nil {19        panic(err)20    }21    slice := []string{"Hello", "World", "!"}22    for _, str := range slice {23        match := re.FindStringIndex(str)24        if match != nil {25            fmt.Println(match)26        }27    }28}29import (30func main() {31    re, err := regexp.Compile(`([a-zA-Z]+)`)32    if err != nil {33        panic(err)34    }35    slice := []string{"Hello", "World", "!"}36    for _, str := range slice {37        match := re.FindStringSubmatch(str)38        if match != nil {

regenerate

Using AI Code Generation

1import (2func main() {3    fmt.Println("Starting the program")4    prog := proc.Prog{}5    prog.Regenerate()6    fmt.Println("Finished the program")7}8import (9func main() {10    fmt.Println("Starting the program")11    prog := proc.Prog{}12    prog.Regenerate()13    fmt.Println("Finished the program")14}15import (16func main() {17    fmt.Println("Starting the program")18    prog := proc.Prog{}19    prog.Regenerate()20    fmt.Println("Finished the program")21}22import (23func main() {24    fmt.Println("Starting the program")25    prog := proc.Prog{}26    prog.Regenerate()27    fmt.Println("Finished the program")28}29import (30func main() {31    fmt.Println("Starting the program")32    prog := proc.Prog{}33    prog.Regenerate()34    fmt.Println("Finished the program")35}36import (37func main() {38    fmt.Println("Starting the program")39    prog := proc.Prog{}40    prog.Regenerate()41    fmt.Println("Finished the program")42}43import (

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