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How to use isExecutorFd method of openbsd Package

Best Syzkaller code snippet using openbsd.isExecutorFd

init.go

Source:init.go

...62// openbsd:src/sys/sys/types.h63func devminor(dev uint64) uint64 {64	return (dev & 0xff) | ((dev & 0xffff0000) >> 8)65}66func isExecutorFd(dev uint64) bool {67	major := devmajor(dev)68	minor := devminor(dev)69	return major == devFdMajor && minor >= 20070}71func (arch *arch) neutralize(c *prog.Call) {72	argStart := 173	switch c.Meta.CallName {74	case "chflagsat":75		argStart = 276		fallthrough77	case "chflags", "fchflags":78		// Prevent changing mutability flags on files. This is79		// especially problematic for file descriptors referring to80		// tty/pty devices since it can cause the SSH connection to the81		// VM to die.82		flags := c.Args[argStart].(*prog.ConstArg)83		badflags := [...]uint64{84			0x00000002, // UF_IMMUTABLE85			0x00000004, // UF_APPEND86			0x00020000, // SF_IMMUTABLE87			0x00040000, // SF_APPEND88		}89		for _, f := range badflags {90			flags.Val &= ^f91		}92	case "clock_settime":93		arch.neutralizeClockSettime(c)94	case "ioctl":95		// Performing the following ioctl commands on a /dev/pf file96		// descriptor causes the ssh VM connection to die. For now, just97		// rewire them to an invalid command.98		request := c.Args[1].(*prog.ConstArg)99		if request.Val == arch.DIOCCLRSTATES || request.Val == arch.DIOCKILLSTATES {100			request.Val = 0101		}102	case "mknodat":103		argStart = 2104		fallthrough105	case "mknod":106		// Prevent vnodes of type VBAD from being created. Such vnodes will107		// likely trigger assertion errors by the kernel.108		mode := c.Args[argStart+mknodMode].(*prog.ConstArg)109		if mode.Val&arch.S_IFMT == arch.S_IFMT {110			mode.Val &^= arch.S_IFMT111			mode.Val |= arch.S_IFCHR112		}113		// Prevent certain /dev/fd/X devices from getting created since114		// they belong to the executor. It's especially dangerous to let115		// the executor interact with kcov file descriptors since it can116		// interfere with the coverage collection and cause corpus117		// explosion.118		// https://groups.google.com/d/msg/syzkaller/_IRWeAjVoy4/Akl2XMZTDAAJ119		dev := c.Args[argStart+mknodDev].(*prog.ConstArg)120		if isExecutorFd(dev.Val) {121			dev.Val = devNullDevT122		}123		// Prevent /dev/sd0b (swap partition) and /dev/sd0c (raw disk)124		// nodes from being created. Writing to such devices can corrupt125		// the file system.126		if devmajor(dev.Val) == 4 && (devminor(dev.Val) == 1 || devminor(dev.Val) == 2) {127			dev.Val = devNullDevT128		}129	case "mlockall":130		flags := c.Args[0].(*prog.ConstArg)131		flags.Val &= ^arch.MCL_FUTURE132	case "setrlimit":133		arch.neutralizeRlimit(c)134	case "sysctl":...

isExecutorFd

Using AI Code Generation

1import (2func main() {3	f, err := os.Open("1.go")4	if err != nil {5		fmt.Println("Error:", err)6	}7	defer f.Close()8	_, err = f.Write([]byte("Hello, World"))9	if err != nil {10		fmt.Println("Error:", err)11	}12}13import (14func main() {15	f, err := os.Open("1.go")16	if err != nil {17		fmt.Println("Error:", err)18	}19	defer f.Close()20	_, err = f.Write([]byte("Hello, World"))21	if err != nil {22		fmt.Println("Error:", err)23	}24}25import (26func main() {27	f, err := os.Open("1.go")28	if err != nil {29		fmt.Println("Error:", err)30	}31	defer f.Close()32	_, err = f.Write([]byte("Hello, World"))33	if err != nil {34		fmt.Println("Error:", err)35	}36}37import (38func main() {39	f, err := os.Open("1.go")40	if err != nil {41		fmt.Println("Error:", err)42	}43	defer f.Close()44	_, err = f.Write([]byte("Hello, World"))45	if err != nil {46		fmt.Println("Error:", err)47	}48}49import (50func main() {51	f, err := os.Open("1.go")52	if err != nil {53		fmt.Println("Error:", err)54	}55	defer f.Close()56	_, err = f.Write([]byte("Hello, World"))57	if err != nil {58		fmt.Println("Error:", err)59	}60}61import (

isExecutorFd

Using AI Code Generation

1import (2func main() {3	fd, err := syscall.Open("/dev/null", syscall.O_RDWR, 0)4	if err != nil {5		fmt.Printf("Error opening file: %v6		os.Exit(1)7	}8	defer syscall.Close(fd)9	if err = syscall.FcntlInt(fd, syscall.F_SETFD, 0); err != nil {10		fmt.Printf("Error with FcntlInt: %v11		os.Exit(1)12	}13	fmt.Println("File descriptor is valid")14}

isExecutorFd

Using AI Code Generation

1import (2func main() {3	f, err := os.Open("test.txt")4	if err != nil {5		fmt.Println("error opening file")6	}7	fmt.Println(f.Fd())8	fmt.Println(os.IsExecutorFd(int(f.Fd())))9}10import (11func IsExecutorFd(fd int) bool {12	if err := syscall.Fstat(fd, &st); err != nil {13	}14}15import (16func TestIsExecutorFd(t *testing.T) {17	f, err := os.Open("test.txt")18	if err != nil {19		t.Fatal("error opening file")20	}21	if !IsExecutorFd(int(f.Fd())) {22		t.Fatal("expected true")23	}24}25Your name to display (optional):26Your name to display (optional):27import (28func main() {29	f, err := os.Open("test.txt")30	if err != nil {31		fmt.Println("error opening file")32	}33	fmt.Println(f.Fd())34	fmt.Println(os.IsExecutorFd(int(f.Fd())))35}

isExecutorFd

Using AI Code Generation

1func (p *openbsd) isExecutorFd(fd int) bool {2}3func (p *openbsd) isExecutorFd(fd int) bool {4}5func (p *openbsd) isExecutorFd(fd int) bool {6}7func (p *openbsd) isExecutorFd(fd int) bool {8}9func (p *openbsd) isExecutorFd(fd int) bool {10}11func (p *openbsd) isExecutorFd(fd int) bool {12}13func (p *openbsd) isExecutorFd(fd int) bool {14}15func (p *openbsd) isExecutorFd(fd int) bool {16}17func (p *openbsd) isExecutorFd(fd int) bool {18}19func (p *openbsd) isExecutorFd(fd int) bool {20}21func (p *openbsd) isExecutorFd(fd int) bool {22}23func (p *openbsd) isExecutorFd(fd int) bool {24}25func (p *openbsd) isExecutorFd(fd int) bool {26}27func (p *openbsd) isExecutorFd(fd int) bool {28}

isExecutorFd

Using AI Code Generation

1import (2func main() {3    if len(os.Args) < 2 {4        fmt.Println("Please specify a file descriptor")5        os.Exit(1)6    }7    executorFd, err := syscall.Open(fd, syscall.O_RDWR, 0)8    if err != nil {9        fmt.Printf("failed to open executor fd: %v", err)10        os.Exit(1)11    }12    defer syscall.Close(executorFd)13    isExecutorFd := host.IsExecutorFD(executorFd)14    fmt.Printf("isExecutorFd: %v", isExecutorFd)15}

isExecutorFd

Using AI Code Generation

1import (2func main() {3	fd := os.NewFile(3, "fd")4	if fd == nil {5		fmt.Println("Error: Could not convert fd to os.File")6	}7	fmt.Println("fd is an executor fd:", fd.(*os.File).(*openbsd).isExecutorFd())8}9import (10func main() {11	fd := os.NewFile(3, "fd")12	if fd == nil {13		fmt.Println("Error: Could not convert fd to os.File")14	}15	fmt.Println("fd is an executor fd:", fd.(*os.File).(*openbsd).isExecutorFd())16}17import (18func main() {19	fd := os.NewFile(3, "fd")20	if fd == nil {21		fmt.Println("Error: Could not convert fd to os.File")22	}23	fmt.Println("fd is an executor fd:", fd.(*os.File).(*openbsd).isExecutorFd())24}25import (26func main() {27	fd := os.NewFile(3, "fd")28	if fd == nil {29		fmt.Println("Error: Could not convert fd to os.File")30	}31	fmt.Println("fd is an executor fd:", fd.(*os.File).(*openbsd).isExecutorFd())32}33import (34func main() {35	fd := os.NewFile(3, "fd")36	if fd == nil {37		fmt.Println("Error: Could not convert fd to os.File")38	}39	fmt.Println("fd is an executor fd:", fd.(*os.File).(*openbsd).isExecutorFd())40}41import (42func main() {43	fd := os.NewFile(3, "fd")

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