How to use checkDebugFS method of host Package

Best Syzkaller code snippet using host.checkDebugFS

features_linux.go

Source:features_linux.go Github

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...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"...

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checkDebugFS

Using AI Code Generation

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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}

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checkDebugFS

Using AI Code Generation

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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()

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checkDebugFS

Using AI Code Generation

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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}

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checkDebugFS

Using AI Code Generation

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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}

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checkDebugFS

Using AI Code Generation

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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 (

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checkDebugFS

Using AI Code Generation

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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}

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checkDebugFS

Using AI Code Generation

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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}

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checkDebugFS

Using AI Code Generation

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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 (

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checkDebugFS

Using AI Code Generation

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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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