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How to use checkDebugFS method of host Package

Best Syzkaller code snippet using host.checkDebugFS

features_linux.go

Source:features_linux.go

...25	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 uint64120	// Handles []uint64 goes here.121}122func checkFault() string {123	if err := osutil.IsAccessible("/proc/self/make-it-fail"); err != nil {124		return "CONFIG_FAULT_INJECTION is not enabled"125	}126	if err := osutil.IsAccessible("/proc/thread-self/fail-nth"); err != nil {127		return "kernel does not have systematic fault injection support"128	}129	if reason := checkDebugFS(); reason != "" {130		return reason131	}132	if err := osutil.IsAccessible("/sys/kernel/debug/failslab/ignore-gfp-wait"); err != nil {133		return "CONFIG_FAULT_INJECTION_DEBUG_FS or CONFIG_FAILSLAB are not enabled"134	}135	return ""136}137func checkLeak() string {138	if reason := checkDebugFS(); reason != "" {139		return reason140	}141	fd, err := syscall.Open("/sys/kernel/debug/kmemleak", syscall.O_RDWR, 0)142	if err != nil {143		return "CONFIG_DEBUG_KMEMLEAK is not enabled"144	}145	defer syscall.Close(fd)146	if _, err := syscall.Write(fd, []byte("scan=off")); err != nil {147		if err == syscall.EBUSY {148			return "KMEMLEAK disabled: increase CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE or unset CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF"149		}150		return fmt.Sprintf("/sys/kernel/debug/kmemleak write failed: %v", err)151	}152	return ""153}154func checkSandboxNamespace() string {155	if err := osutil.IsAccessible("/proc/self/ns/user"); err != nil {156		return err.Error()157	}158	return ""159}160func checkSandboxAndroid() string {161	if err := osutil.IsAccessible("/sys/fs/selinux/policy"); err != nil {162		return err.Error()163	}164	return ""165}166func checkNetInjection() string {167	if err := osutil.IsAccessible("/dev/net/tun"); err != nil {168		return err.Error()169	}170	return ""171}172func checkUSBEmulation() string {173	if err := osutil.IsAccessible("/dev/raw-gadget"); err != nil {174		return err.Error()175	}176	return ""177}178func checkDebugFS() string {179	if err := osutil.IsAccessible("/sys/kernel/debug"); err != nil {180		return "debugfs is not enabled or not mounted"181	}182	return ""183}184func checkKCSAN() string {185	if err := osutil.IsAccessible("/sys/kernel/debug/kcsan"); err != nil {186		return err.Error()187	}188	return ""189}190func checkDevlinkPCI() string {191	if err := osutil.IsAccessible("/sys/bus/pci/devices/0000:00:10.0/"); err != nil {192		return "PCI device 0000:00:10.0 is not available"...

checkDebugFS

Using AI Code Generation

1import (2func main() {3    err := shim.CheckDebugFS()4    if err != nil {5        fmt.Println("Error: ", err)6    } else {7        fmt.Println("DebugFS is enabled")8    }9}

checkDebugFS

Using AI Code Generation

1func main() {2    host := new(Host)3    host.checkDebugFS()4}5func main() {6    host := new(Host)7    host.checkDebugFS()8}9func main() {10    host := new(Host)11    host.checkDebugFS()12}13func main() {14    host := new(Host)15    host.checkDebugFS()16}17func main() {18    host := new(Host)19    host.checkDebugFS()20}21func main() {22    host := new(Host)23    host.checkDebugFS()24}25func main() {26    host := new(Host)27    host.checkDebugFS()28}29func main() {30    host := new(Host)31    host.checkDebugFS()32}33func main() {34    host := new(Host)35    host.checkDebugFS()36}37func main() {38    host := new(Host)39    host.checkDebugFS()40}41func main() {42    host := new(Host)43    host.checkDebugFS()44}45func main() {46    host := new(Host)47    host.checkDebugFS()48}49func main() {50    host := new(Host)51    host.checkDebugFS()52}53func main() {54    host := new(Host)55    host.checkDebugFS()

checkDebugFS

Using AI Code Generation

1import "fmt"2func main() {3    h.checkDebugFS()4}5import "fmt"6func main() {7    h.checkDebugFS()8}9import "fmt"10func main() {11    h.checkDebugFS()12}13import "fmt"14func main() {15    h.checkDebugFS()16}17import "fmt"18func main() {19    h.checkDebugFS()20}21import "fmt"22func main() {23    h.checkDebugFS()24}25import "fmt"26func main() {27    h.checkDebugFS()28}29import "fmt"30func main() {31    h.checkDebugFS()32}33import "fmt"34func main() {35    h.checkDebugFS()36}37import "fmt"38func main() {39    h.checkDebugFS()40}41import "fmt"42func main() {43    h.checkDebugFS()44}45import "fmt"46func main() {47    h.checkDebugFS()48}

checkDebugFS

Using AI Code Generation

1import (2func main() {3        cmd := exec.Command("/bin/ls", "-l", "/sys/kernel/debug")4        cmd.SysProcAttr = &syscall.SysProcAttr{}5        cmd.SysProcAttr.Credential = &syscall.Credential{Uid: 0, Gid: 0}6        err := cmd.Run()7        if err != nil {8                fmt.Println("Error:", err)9        }10}

checkDebugFS

Using AI Code Generation

1import (2func TestDebugfs(t *testing.T) {3	_, err := utils.CheckDebugFS()4	if err != nil {5		t.Fatalf("Error while checking debugfs: %v", err)6	}7}8import (9func TestDebugfs(t *testing.T) {10	_, err := utils.CheckDebugFS()11	if err != nil {12		t.Fatalf("Error while checking debugfs: %v", err)13	}14}15import (16func TestDebugfs(t *testing.T) {17	_, err := utils.CheckDebugFS()18	if err != nil {19		t.Fatalf("Error while checking debugfs: %v", err)20	}21}22import (23func TestDebugfs(t *testing.T) {24	_, err := utils.CheckDebugFS()25	if err != nil {26		t.Fatalf("Error while checking debugfs: %v", err)27	}28}29import (30func TestDebugfs(t *testing.T) {31	_, err := utils.CheckDebugFS()32	if err != nil {33		t.Fatalf("Error while checking debugfs: %v", err)34	}35}36import (

checkDebugFS

Using AI Code Generation

1import (2func main() {3	host := host.New()4	if host.CheckDebugFS() {5		fmt.Println("DebugFS is enabled")6	} else {7		fmt.Println("DebugFS is disabled")8	}9}10import (11func main() {12	host := host.New()13	if host.FileExists("/etc/hosts") {14		fmt.Println("/etc/hosts exists")15	} else {16		fmt.Println("/etc/hosts does not exist")17	}18}19import (20func main() {21	host := host.New()22	if host.DirExists("/etc") {23		fmt.Println("/etc exists")24	} else {25		fmt.Println("/etc does not exist")26	}27}

checkDebugFS

Using AI Code Generation

1import (2func main() {3    host := host.Host{}4    host.CheckDebugFS()5}6import (7func main() {8    host := host.Host{}9    fmt.Println(host.FileExists("/etc/hosts"))10}11import (12func main() {13    host := host.Host{}14    fmt.Println(host.GetNetworkInterfaces())15}16import (17func main() {18    host := host.Host{}19    fmt.Println(host.GetNetworkInterfaces())20}21import (22func main() {23    host := host.Host{}24    fmt.Println(host.IsNetworkInterfaceUp("lo"))25}26import (27func main() {28    host := host.Host{}29    fmt.Println(host.IsNetworkInterfaceDown("lo"))30}

checkDebugFS

Using AI Code Generation

1import (2func main() {3	h := host.Host{}4	if h.CheckDebugFS() {5		fmt.Println("DebugFS is mounted")6	} else {7		fmt.Println("DebugFS is not mounted")8	}9}10import (11func main() {12	h := host.Host{}13	if h.CheckDebugFS() {14		fmt.Println("DebugFS is mounted")15	} else {16		fmt.Println("DebugFS is not mounted")17	}18}19import (20func main() {21	h := host.Host{}22	if h.CheckDebugFS() {23		fmt.Println("DebugFS is mounted")24	} else {25		fmt.Println("DebugFS is not mounted")26	}27}28import (29func main() {30	h := host.Host{}31	if h.CheckDebugFS() {32		fmt.Println("DebugFS is mounted")33	} else {34		fmt.Println("DebugFS is not mounted")35	}36}37import (38func main() {39	h := host.Host{}40	if h.CheckDebugFS() {41		fmt.Println("DebugFS is mounted")42	} else {43		fmt.Println("DebugFS is not mounted")44	}45}46import (

checkDebugFS

Using AI Code Generation

1import (2func main() {3	err := syscall.Mount("debugfs", "/sys/kernel/debug/", "debugfs", 0, "")4	if err != nil {5		fmt.Println("Error mounting debugfs: ", err)6		os.Exit(1)7	}8}9import (10func main() {11	err := syscall.Mount("debugfs", "/sys/kernel/debug/", "debugfs", 0, "")12	if err != nil {13		fmt.Println("Error mounting debugfs: ", err)14		os.Exit(1)15	}16	err = syscall.Mount("debugfs", "/sys/kernel/debug/", "debugfs", 0, "")17	if err != nil {18		fmt.Println("Error mounting debugfs

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