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How to use checkCoverage method of host Package

Best Syzkaller code snippet using host.checkCoverage

features_linux.go

Source:features_linux.go

...10	"github.com/google/syzkaller/prog"11	"github.com/google/syzkaller/sys/linux"12)13func init() {14	checkFeature[FeatureCoverage] = checkCoverage15	checkFeature[FeatureComparisons] = checkComparisons16	checkFeature[FeatureExtraCoverage] = checkExtraCoverage17	checkFeature[FeatureSandboxSetuid] = unconditionallyEnabled18	checkFeature[FeatureSandboxNamespace] = checkSandboxNamespace19	checkFeature[FeatureSandboxAndroid] = checkSandboxAndroid20	checkFeature[FeatureFault] = checkFault21	checkFeature[FeatureLeak] = checkLeak22	checkFeature[FeatureNetInjection] = checkNetInjection23	checkFeature[FeatureNetDevices] = unconditionallyEnabled24	checkFeature[FeatureKCSAN] = checkKCSAN25	checkFeature[FeatureDevlinkPCI] = checkDevlinkPCI26	checkFeature[FeatureUSBEmulation] = checkUSBEmulation27}28func checkCoverage() string {29	if reason := checkDebugFS(); reason != "" {30		return reason31	}32	if !osutil.IsExist("/sys/kernel/debug/kcov") {33		return "CONFIG_KCOV is not enabled"34	}35	if err := osutil.IsAccessible("/sys/kernel/debug/kcov"); err != nil {36		return err.Error()37	}38	return ""39}40func checkComparisons() (reason string) {41	return checkCoverageFeature(FeatureComparisons)42}43func checkExtraCoverage() (reason string) {44	return checkCoverageFeature(FeatureExtraCoverage)45}46func checkCoverageFeature(feature int) (reason string) {47	if reason = checkDebugFS(); reason != "" {48		return reason49	}50	// TODO(dvyukov): this should run under target arch.51	// E.g. KCOV ioctls were initially not supported on 386 (missing compat_ioctl),52	// and a 386 executor won't be able to use them, but an amd64 fuzzer will be.53	fd, err := syscall.Open("/sys/kernel/debug/kcov", syscall.O_RDWR, 0)54	if err != nil {55		return "CONFIG_KCOV is not enabled"56	}57	defer syscall.Close(fd)58	// Trigger host target lazy initialization, it will fill linux.KCOV_INIT_TRACE.59	// It's all wrong and needs to be refactored.60	if _, err := prog.GetTarget(runtime.GOOS, runtime.GOARCH); err != nil {61		return fmt.Sprintf("failed to get target: %v", err)62	}63	coverSize := uintptr(64 << 10)64	_, _, errno := syscall.Syscall(65		syscall.SYS_IOCTL, uintptr(fd), linux.KCOV_INIT_TRACE, coverSize)66	if errno != 0 {67		return fmt.Sprintf("ioctl(KCOV_INIT_TRACE) failed: %v", errno)68	}69	mem, err := syscall.Mmap(fd, 0, int(coverSize*unsafe.Sizeof(uintptr(0))),70		syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_SHARED)71	if err != nil {72		return fmt.Sprintf("KCOV mmap failed: %v", err)73	}74	defer func() {75		if err := syscall.Munmap(mem); err != nil {76			reason = fmt.Sprintf("munmap failed: %v", err)77		}78	}()79	switch feature {80	case FeatureComparisons:81		_, _, errno = syscall.Syscall(syscall.SYS_IOCTL,82			uintptr(fd), linux.KCOV_ENABLE, linux.KCOV_TRACE_CMP)83		if errno != 0 {84			if errno == 524 { // ENOTSUPP85				return "CONFIG_KCOV_ENABLE_COMPARISONS is not enabled"86			}87			return fmt.Sprintf("ioctl(KCOV_TRACE_CMP) failed: %v", errno)88		}89	case FeatureExtraCoverage:90		arg := KcovRemoteArg{91			TraceMode:    uint32(linux.KCOV_TRACE_PC),92			AreaSize:     uint32(coverSize * unsafe.Sizeof(uintptr(0))),93			NumHandles:   0,94			CommonHandle: 0,95		}96		_, _, errno = syscall.Syscall(syscall.SYS_IOCTL,97			uintptr(fd), linux.KCOV_REMOTE_ENABLE, uintptr(unsafe.Pointer(&arg)))98		if errno != 0 {99			if errno == 25 { // ENOTTY100				return "extra coverage is not supported by the kernel"101			}102			return fmt.Sprintf("ioctl(KCOV_REMOTE_ENABLE) failed: %v", errno)103		}104	default:105		panic("unknown feature in checkCoverageFeature")106	}107	defer func() {108		_, _, errno = syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), linux.KCOV_DISABLE, 0)109		if errno != 0 {110			reason = fmt.Sprintf("ioctl(KCOV_DISABLE) failed: %v", errno)111		}112	}()113	return ""114}115type KcovRemoteArg struct {116	TraceMode    uint32117	AreaSize     uint32118	NumHandles   uint32119	CommonHandle uint64...

checkCoverage

Using AI Code Generation

1import (2func main() {3    db, _ := ethdb.NewMemDatabase()4    state, _ := state.New(common.Hash{}, state.NewDatabase(db))5    env := vm.NewEVM(vm.Context{}, state, params.TestChainConfig, vm.Config{})6    contract := vm.NewContract(crypto.PubkeyToAddress(*crypto.GenerateKey()), crypto.PubkeyToAddress(*crypto.GenerateKey()), big.NewInt(10000), 100000)7    contract.SetCallCode(&crypto.PubkeyToAddress(*crypto.GenerateKey()), crypto.Keccak256Hash([]byte("test")), []byte{0x05})8    runner := vm.NewEVMRunner(env, contract)9    ret, err := runner.Run()10    if err != nil {11        fmt.Println(err)12    }13    fmt.Println(ret)14}15import (

checkCoverage

Using AI Code Generation

1import java.io.File;2import java.io.FileNotFoundException;3import java.io.IOException;4import java.util.ArrayList;5import java.util.Scanner;6public class TestCoverage {7	public static void main(String[] args) throws IOException {8		File file = new File("C:\\Users\\Akshay\\Desktop\\2.txt");9		ArrayList<String> list = new ArrayList<String>();10		Scanner sc = new Scanner(file);11		while (sc.hasNextLine()) {12			list.add(sc.nextLine());13		}14		Host h = new Host();15		int result = h.checkCoverage(list);16		System.out.println(result);17	}18}19import java.io.File;20import java.io.FileNotFoundException;21import java.util.ArrayList;22import java.util.Scanner;23public class Host {24	public int checkCoverage(ArrayList<String> list) throws FileNotFoundException {25		int count = 0;26		int n = list.size();27		for (int i = 0; i < n; i++) {28			String[] arr = list.get(i).split(" ");29			for (int j = 0; j < arr.length; j++) {30				if (arr[j].equals("1")) {31					count++;32					break;33				}34			}35		}36		return count;37	}38}39import java.io.File;40import java.io.FileNotFoundException;41import java.util.Scanner;42public class CountLines {43    public static void main(String[] args) throws FileNotFoundException {44        File file = new File("C:\\Users\\Akshay\\Desktop\\2.txt");45        Scanner sc = new Scanner(file);46        int count = 0;47        while (sc.hasNextLine()) {48            sc.nextLine();49            count++;50        }51        System.out.println(count);52    }53}54    at java.base/java.util.Scanner.throwFor(Scanner.java:939)55    at java.base/java.util.Scanner.next(Scanner.java:1594)56    at java.base/java.util.Scanner.nextLine(Scanner.java:2569)57    at CountLines.main(CountLines.java:10)

checkCoverage

Using AI Code Generation

1import "fmt"2type host struct {3}4func (h host) checkCoverage() {5    fmt.Println("Checking coverage for host: " + h.name)6}7func main() {8    h := host{"host1", "

checkCoverage

Using AI Code Generation

1import (2type host struct {3}4func (h *host) checkCoverage() {5	fmt.Println("Coverage of", h.IP, ":", h.Port)6}7func main() {8	h := host{"

checkCoverage

Using AI Code Generation

1import (2func main() {3	h := host.NewHost()4	h.CheckCoverage()5}6import (7func main() {8	h := host.NewHost()9	h.CheckCoverage()10}11import (12func main() {13	h := host.NewHost()14	h.CheckCoverage()15}16import (17func main() {18	h := host.NewHost()19	h.CheckCoverage()20}21import (22func main() {23	h := host.NewHost()24	h.CheckCoverage()25}26import (27func main() {28	h := host.NewHost()29	h.CheckCoverage()30}31import (32func main() {33	h := host.NewHost()34	h.CheckCoverage()35}36import (37func main() {38	h := host.NewHost()39	h.CheckCoverage()40}41import (42func main() {

checkCoverage

Using AI Code Generation

1import (2func main() {3    host := new(coverage.Host)4    host.CheckCoverage()5    fmt.Println("Coverage: ", host.Coverage)6}

checkCoverage

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello, playground")4	mylib.Host.checkCoverage()5}6type Host struct {7}8func (h *Host) checkCoverage() {9	fmt.Println("checkCoverage")10}11type Cluster struct {12}13func (c *Cluster) checkCoverage() {14	fmt.Println("checkCoverage")15}16type Cluster struct {17}18func (c *Cluster) checkCoverage() {19	fmt.Println("checkCoverage")20}21type Cluster struct {22}23func (c *Cluster) checkCoverage() {24	fmt.Println("checkCoverage")25}26type Cluster struct {27}28func (c *Cluster) checkCoverage() {29	fmt.Println("checkCoverage")30}31type Cluster struct {32}33func (c *Cluster) checkCoverage() {34	fmt.Println("checkCoverage")35}36type Host struct {37}38import (39func main() {40	fmt.Println("Hello, playground")41	mylib.Host.checkCoverage()42}43type Host struct {44}45func (h *Host) check

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