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}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.