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How to use annotateCall method of openbsd Package

Best Syzkaller code snippet using openbsd.annotateCall

init.go

Source:init.go

...15		S_IFCHR:        target.GetConst("S_IFCHR"),16	}17	target.MakeDataMmap = targets.MakePosixMmap(target, false, false)18	target.Neutralize = arch.neutralize19	target.AnnotateCall = arch.annotateCall20}21type arch struct {22	unix           *targets.UnixNeutralizer23	DIOCKILLSTATES uint6424	S_IFMT         uint6425	S_IFCHR        uint6426}27const (28	mknodMode = 029	mknodDev  = 130	// openbsd:src/etc/etc.amd64/MAKEDEV31	devFdMajor  = 2232	devNullDevT = 0x020233	// kCoverFd in executor/executor.cc34	kcovFdMinorMin = 23235	// kOutPipeFd in executor/executor.cc36	kcovFdMinorMax = 24837	// MCL_FUTURE from openbsd:src/sys/sys/mman.h38	mclFuture uint64 = 0x239	// RLIMIT_DATA from openbsd:src/sys/sys/resource.h40	rlimitData = 241	// RLIMIT_STACK from openbsd:src/sys/sys/resource.h42	rlimitStack = 343	// Mask covering all valid rlimit resources.44	rlimitMask = 0xf45)46// openbsd:src/sys/sys/types.h47func devmajor(dev uint64) uint64 {48	return (dev >> 8) & 0xff49}50// openbsd:src/sys/sys/types.h51func devminor(dev uint64) uint64 {52	return (dev & 0xff) | ((dev & 0xffff0000) >> 8)53}54func isKcovFd(dev uint64) bool {55	major := devmajor(dev)56	minor := devminor(dev)57	return major == devFdMajor && minor >= kcovFdMinorMin && minor < kcovFdMinorMax58}59func (arch *arch) neutralize(c *prog.Call) {60	argStart := 161	switch c.Meta.CallName {62	case "chflagsat":63		argStart = 264		fallthrough65	case "chflags", "fchflags":66		// Prevent changing mutability flags on files. This is67		// especially problematic for file descriptors referring to68		// tty/pty devices since it can cause the SSH connection to the69		// VM to die.70		flags := c.Args[argStart].(*prog.ConstArg)71		badflags := [...]uint64{72			0x00000002, // UF_IMMUTABLE73			0x00000004, // UF_APPEND74			0x00020000, // SF_IMMUTABLE75			0x00040000, // SF_APPEND76		}77		for _, f := range badflags {78			flags.Val &= ^f79		}80	case "ioctl":81		// Performing the following ioctl on a /dev/pf file descriptor82		// causes the ssh VM connection to die. For now, just rewire it83		// to an invalid command.84		request := c.Args[1].(*prog.ConstArg)85		if request.Val == arch.DIOCKILLSTATES {86			request.Val = 087		}88	case "mknodat":89		argStart = 290		fallthrough91	case "mknod":92		// Prevent vnodes of type VBAD from being created. Such vnodes will93		// likely trigger assertion errors by the kernel.94		mode := c.Args[argStart+mknodMode].(*prog.ConstArg)95		if mode.Val&arch.S_IFMT == arch.S_IFMT {96			mode.Val &^= arch.S_IFMT97			mode.Val |= arch.S_IFCHR98		}99		// Prevent /dev/fd/X devices from getting created where X maps100		// to an open kcov fd. They interfere with kcov data collection101		// and cause corpus explosion.102		// https://groups.google.com/d/msg/syzkaller/_IRWeAjVoy4/Akl2XMZTDAAJ103		dev := c.Args[argStart+mknodDev].(*prog.ConstArg)104		if isKcovFd(dev.Val) {105			dev.Val = devNullDevT106		}107		// Prevent /dev/sd0b (swap partition) and /dev/sd0c (raw disk)108		// nodes from being created. Writing to such devices can corrupt109		// the file system.110		if devmajor(dev.Val) == 4 && (devminor(dev.Val) == 1 || devminor(dev.Val) == 2) {111			dev.Val = devNullDevT112		}113	case "mlockall":114		flags := c.Args[0].(*prog.ConstArg)115		flags.Val &= ^mclFuture116	case "setrlimit":117		var rlimitMin uint64118		var rlimitMax uint64 = math.MaxUint64119		resource := c.Args[0].(*prog.ConstArg).Val & rlimitMask120		if resource == rlimitData {121			// OpenBSD performs a strict validation of the122			// RLIMIT_DATA soft limit during memory allocation.123			// Lowering the same limit could cause syz-executor to124			// run out of memory quickly. Therefore make sure to not125			// go lower than the default soft limit for the staff126			// group.127			rlimitMin = 1536 * 1024 * 1024128		} else if resource == rlimitStack {129			// Do not allow the stack to grow beyond the initial130			// soft limit chosen by syz-executor. Otherwise,131			// syz-executor will most likely not be able to perform132			// any more heap allocations since they majority of133			// memory is reserved for the stack.134			rlimitMax = 1 * 1024 * 1024135		} else {136			break137		}138		ptr := c.Args[1].(*prog.PointerArg)139		if ptr.Res != nil {140			args := ptr.Res.(*prog.GroupArg).Inner141			for _, arg := range args {142				switch v := arg.(type) {143				case *prog.ConstArg:144					if v.Val < rlimitMin {145						v.Val = rlimitMin146					}147					if v.Val > rlimitMax {148						v.Val = rlimitMax149					}150				}151			}152		}153	default:154		arch.unix.Neutralize(c)155	}156}157func (arch *arch) annotateCall(c prog.ExecCall) string {158	devArg := 2159	switch c.Meta.Name {160	case "mknodat":161		devArg = 3162		fallthrough163	case "mknod":164		dev := c.Args[devArg].(prog.ExecArgConst).Value165		return fmt.Sprintf("major = %v, minor = %v", devmajor(dev), devminor(dev))166	}167	return ""168}...

annotateCall

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println("Hello, playground")4    openbsd := new(Openbsd)5    openbsd.annotateCall()6}7import "fmt"8type Openbsd struct {9}10func (o *Openbsd) annotateCall() {11    fmt.Println("This is a call to annotateCall method of Openbsd class")12}

annotateCall

Using AI Code Generation

1import (2func main() {3	args = []string{"-l", "/tmp"}4	env = []string{"FOO=bar", "ABC=123"}5	cmd = exec.Command(path, args...)6	cmd.SysProcAttr = &syscall.SysProcAttr{Ptrace: true}7	err = syscall.OpenBSDAnnotateCall(cmd)8	if err != nil {9		fmt.Fprintf(os.Stderr, "AnnotateCall failed: %s10		os.Exit(1)11	}12	err = cmd.Run()13	if err != nil {14		fmt.Fprintf(os.Stderr, "Run failed: %s15		os.Exit(1)16	}17	os.Exit(0)18}

annotateCall

Using AI Code Generation

1import (2func main() {3        fmt.Printf("this is a test4        syscall.OpenbsdAnnotateCall("test message")5        os.Exit(0)6}7import (8func main() {9        fmt.Printf("this is a test10        syscall.OpenbsdAnnotateCall("test message")11        os.Exit(0)12}13import (14func main() {15        fmt.Printf("this is a test16        syscall.OpenbsdAnnotateCall("test message")17        os.Exit(0)18}19import (20func main() {21        fmt.Printf("this is a test22        syscall.OpenbsdAnnotateCall("test message")23        os.Exit(0)24}25import (26func main() {27        fmt.Printf("this is a test28        syscall.OpenbsdAnnotateCall("test message")29        os.Exit(0)30}31import (32func main() {33        fmt.Printf("this is a test34        syscall.OpenbsdAnnotateCall("test message")35        os.Exit(0)36}37import (38func main() {39        fmt.Printf("this is a test40        syscall.OpenbsdAnnotateCall("test message")41        os.Exit(0)42}43import (

annotateCall

Using AI Code Generation

1import (2func main() {3	syscall.Syscall(syscall.SYS_ANNOTATE, 0, 0, 0)4	fmt.Println("Hello World")5}6import (7func main() {8	syscall.Syscall(syscall.SYS_ANNOTATE, 0, 0, 0)9	fmt.Println("Hello World")10}11import (12func main() {

annotateCall

Using AI Code Generation

1import "openbsd"2import "syscall"3func main() {4  var syscallArgs []uintptr = []uintptr{1,2,3,4,5,6}5  openbsd.AnnotateCall(pid, syscallNum, syscallName, syscallArgs, syscallReturn, syscallErr, syscallDuration)6}7import "openbsd"8import "syscall"9func main() {10  var syscallArgs []uintptr = []uintptr{1,2,3,4,5,6}11  openbsd.AnnotateCall(pid, syscallNum, syscallName, syscallArgs, syscallReturn, syscallErr, syscallDuration)12}13import "openbsd"14import "syscall"15func main() {16  var syscallArgs []uintptr = []uintptr{1,2,3,4,5,6}17  openbsd.AnnotateCall(pid, syscallNum, syscallName, syscallArgs, syscallReturn, syscallErr, syscallDuration)18}19import "openbsd"20import "syscall"21func main() {22  var syscallArgs []uintptr = []uintptr{1,2,3,4,5,6}

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