How to use WriteExecFile method of osutil Package

Best Syzkaller code snippet using osutil.WriteExecFile

kvm.go

Source:kvm.go

...107	if err != nil {108		return nil, fmt.Errorf("failed to lkvm setup: %v\n%s", err, out)109	}110	scriptPath := filepath.Join(workdir, "script.sh")111	if err := osutil.WriteExecFile(scriptPath, []byte(script)); err != nil {112		return nil, fmt.Errorf("failed to create temp file: %v", err)113	}114	rpipe, wpipe, err := osutil.LongPipe()115	if err != nil {116		return nil, fmt.Errorf("failed to create pipe: %v", err)117	}118	inst.lkvm = osutil.Command("taskset", "-c", strconv.Itoa(index%runtime.NumCPU()),119		inst.cfg.Lkvm, "sandbox",120		"--disk", inst.sandbox,121		"--kernel", inst.cfg.Kernel,122		"--params", "slub_debug=UZ "+inst.cfg.Cmdline,123		"--mem", strconv.Itoa(inst.cfg.Mem),124		"--cpus", strconv.Itoa(inst.cfg.CPU),125		"--network", "mode=user",126		"--sandbox", scriptPath,127	)128	inst.lkvm.Stdout = wpipe129	inst.lkvm.Stderr = wpipe130	if err := inst.lkvm.Start(); err != nil {131		rpipe.Close()132		wpipe.Close()133		return nil, fmt.Errorf("failed to start lkvm: %v", err)134	}135	// Start output reading goroutine.136	inst.readerC = make(chan error)137	go func() {138		var buf [64 << 10]byte139		for {140			n, err := rpipe.Read(buf[:])141			if n != 0 {142				if inst.debug {143					os.Stdout.Write(buf[:n])144					os.Stdout.Write([]byte{'\n'})145				}146				inst.mu.Lock()147				inst.outputB = append(inst.outputB, buf[:n]...)148				if inst.outputC != nil {149					select {150					case inst.outputC <- inst.outputB:151						inst.outputB = nil152					default:153					}154				}155				inst.mu.Unlock()156				time.Sleep(time.Millisecond)157			}158			if err != nil {159				rpipe.Close()160				inst.readerC <- err161				return162			}163		}164	}()165	// Wait for the lkvm asynchronously.166	inst.waiterC = make(chan error, 1)167	go func() {168		err := inst.lkvm.Wait()169		wpipe.Close()170		inst.waiterC <- err171	}()172	// Wait for the script to start serving.173	_, errc, err := inst.Run(10*time.Minute, nil, "mount -t debugfs none /sys/kernel/debug/")174	if err == nil {175		err = <-errc176	}177	if err != nil {178		return nil, fmt.Errorf("failed to run script: %v", err)179	}180	closeInst = nil181	return inst, nil182}183func (inst *instance) Close() {184	if inst.lkvm != nil {185		inst.lkvm.Process.Kill()186		err := <-inst.waiterC187		inst.waiterC <- err // repost it for waiting goroutines188		<-inst.readerC189	}190	os.RemoveAll(inst.sandboxPath)191	os.Remove(inst.sandboxPath + ".sock")192}193func (inst *instance) Forward(port int) (string, error) {194	return fmt.Sprintf("%v:%v", hostAddr, port), nil195}196func (inst *instance) Copy(hostSrc string) (string, error) {197	vmDst := filepath.Join("/", filepath.Base(hostSrc))198	dst := filepath.Join(inst.sandboxPath, vmDst)199	if err := osutil.CopyFile(hostSrc, dst); err != nil {200		return "", err201	}202	if err := os.Chmod(dst, 0777); err != nil {203		return "", err204	}205	return vmDst, nil206}207func (inst *instance) Run(timeout time.Duration, stop <-chan bool, command string) (208	<-chan []byte, <-chan error, error) {209	outputC := make(chan []byte, 10)210	errorC := make(chan error, 1)211	inst.mu.Lock()212	inst.outputB = nil213	inst.outputC = outputC214	inst.mu.Unlock()215	cmdFile := filepath.Join(inst.sandboxPath, "/syz-cmd")216	tmpFile := cmdFile + "-tmp"217	if err := osutil.WriteExecFile(tmpFile, []byte(command)); err != nil {218		return nil, nil, err219	}220	if err := osutil.Rename(tmpFile, cmdFile); err != nil {221		return nil, nil, err222	}223	signal := func(err error) {224		inst.mu.Lock()225		if inst.outputC == outputC {226			inst.outputB = nil227			inst.outputC = nil228		}229		inst.mu.Unlock()230		errorC <- err231	}...

WriteExecFile

Using AI Code Generation

1import (2func main() {3   hostInfo, _ := host.Info()4   fmt.Println(hostInfo)5   processInfo, _ := process.Processes()6   fmt.Println(processInfo)7   cpuInfo, _ := cpu.Info()8   fmt.Println(cpuInfo)9   memoryInfo, _ := mem.VirtualMemory()10   fmt.Println(memoryInfo)11   diskInfo, _ := disk.Partitions(true)12   fmt.Println(diskInfo)13   networkInfo, _ := net.Interfaces()14   fmt.Println(networkInfo)

WriteExecFile

Using AI Code Generation

1import (2func main() {3    sshConfig := ssh_config.New()4    if err := sshConfig_util.ReadUserConfig(sshConfig); err != nil {5        fmt.Println("Error reading SSH config file: %s", err)6        os.Exit(1)7    }8    sshConfig.Hosts = append(sshConfig.Hosts, &ssh_config.Host{9        Hostnames: []string{"example.com"},10    })11    if err := sshConfig_util.WriteUserConfig(sshConfig); err != nil {12        fmt.Println("Error writing SSH config file: %s", err)13        os.Exit(1)14    }15    cmd := exec.Command("ssh", "example.com")16    if err := cmd.Run(); err != nil {17        fmt.Println("Error running SSH command: %s", err)18        os.Exit(1)19    }20}

WriteExecFile

Using AI Code Generation

1import (2func main() {3file, err := os.Create("test.txt")4if err != nil {5fmt.Println(err)6}7file.WriteString("This is a test file")8file.Close()9osutil.WriteExecFile("test.txt")10}11import (12func main() {13file, err := os.Create("test.txt")14if err != nil {15fmt.Println(err)16}17file.WriteString("This is a test file")18file.Close()19content := osutil.ReadExecFile("test.txt")20fmt.Println(content)21}22import (23func main() {24file, err := os.Create("test.txt")25if err != nil {26fmt.Println(err)27}28file.WriteString("This is a test file")29file.Close()30osutil.DeleteFile("test.txt")31}32import (33func main() {34file, err := os.Create("test.txt")35if err != nil {36fmt.Println(err)37}38file.WriteString("This is a test file")39file.Close()40content := osutil.ReadFile("test.txt")41fmt.Println(content)42}43import (44func main() {45file, err := os.Create("test.txt")46if err != nil {47fmt.Println(err)48}49file.WriteString("This is a test file")

WriteExecFile

Using AI Code Generation

1import (2func main() {3	m := make(map[uint64]string)4	c := consistent.New(m, nil)5	c.Add("node4")6	fmt.Println(c.Members())7	fmt.Println(c.LocateKey([]byte("key1")))8	fmt.Println(c.LocateKey([]byte("key2")))9	fmt.Println(c.LocateKey([]byte("key3")))10	fmt.Println(c.LocateKey([]byte("key4")))11	fmt.Println(c.LocateKey([]byte("key5")))12	fmt.Println(c.LocateKey([]byte("key6")))

WriteExecFile

Using AI Code Generation

1import (2func main() {3	err := osutil.WriteExecFile("test.txt", "Hello World")4	if err != nil {5		fmt.Println(err)6	}7}8import (9func main() {10	err := osutil.WriteExecFile("test.txt", "Hello World")11	if err != nil {12		fmt.Println(err)13	}14}15import (16func main() {17	err := osutil.WriteExecFile("test.txt", "Hello World")18	if err != nil {19		fmt.Println(err)20	}21}22import (23func main() {24	err := osutil.WriteExecFile("test.txt", "Hello World")25	if err != nil {26		fmt.Println(err)27	}28}

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