Best Syzkaller code snippet using prog.Type
prog.go
Source:prog.go
...16 "errors"17 "unsafe"18 "golang.org/x/sys/unix"19)20// ProgType is the type of an eBPF program.21type ProgType uint3222// Valid eBPF program types.23const (24 ProgTypeUnspec ProgType = iota25 ProgTypeSocketFilter26 ProgTypeKProbe27 ProgTypeSchedCLS28 ProgTypeSchedACT29 ProgTypeTracepoint30 ProgTypeXDP31 ProgTypePerfEvent32 ProgTypeCGroupSKB33 ProgTypeCGroupSock34 ProgTypeLWTIn35 ProgTypeLWTOut36 ProgTypeLWTXMit37 ProgTypeSockOps38 ProgTypeSKSKB39 ProgTypeCGroupDevice40 ProgTypeSKMsg41 ProgTypeRawTracepoint42 ProgTypeCGroupSockAddr43 ProgTypeLWTSeg6Local44 ProgTypeLIRCMode245 ProgTypeSKReusePort46)47// AttachType describes the attach type of an eBPF program.48type AttachType uint3249// Valid program attach types.50const (51 AttachTypeCGroupInetIngress AttachType = iota52 AttachTypeCGroupInetEgress53 AttachTypeCGroupInetSockCreate54 AttachTypeCGroupSockOps55 AttachTypeSKSKBStreamParser56 AttachTypeSKSKBStreamVerdict57 AttachTypeCGroupDevice58 AttachTypeSKMsgVerdict59 AttachTypeCGroupInet4Bind60 AttachTypeCGroupInet6Bind61 AttachTypeCGroupInet4Connect62 AttachTypeCGroupInet6Connect63 AttachTypeCGroupInet4PostBind64 AttachTypeCGroupInet6PostBind65 AttachTypeCGroupUDP4SendMsg66 AttachTypeCGroupUDP6SendMsg67 AttachTypeLIRCMode268)69// Prog configures an eBPF program.70type Prog struct {71 Type ProgType72 License string73 KernelVersion uint3274 StrictAlignment bool75 ObjectName string76 IfIndex uint3277 ExpectedAttachType AttachType78 pfd *progFD79}80// defaultLogBufSize is the log buffer size used by the Linux tools.81// See tools/lib/bpf.h in the Linux kernel source tree. We use it as-is.82// Perhaps it will be configurable one day.83//84// TODO(acln): configurable?85const defaultLogBufSize = 256 * 102486// BPF_PROG_LOAD flags.87const loadStrictAlignment = 1 << 088// CGroupAttachFlag is a flag for an AttachCGroup operation.89type CGroupAttachFlag uint3290// cgroup attach flags.91const (92 // CGroupAttachAllowNone allows no further bpf programs in the target93 // cgroup sub-tree.94 CGroupAttachAllowNone CGroupAttachFlag = 095 // CGroupAttachAllowOverride arranges for the program in this cgroup96 // to yield to programs installed by sub-cgroups.97 CGroupAttachAllowOverride CGroupAttachFlag = 1 << 098 // CGroupAttachAllowMulti arranges for the program in this cgroup99 // to run in addition to programs installed by sub-cgroups.100 CGroupAttachAllowMulti CGroupAttachFlag = 1 << 1101)102// Load attaches the specified InstructionStream to the Prog103// and loads the program into the kernel.104//105// If the specified InstructionStream uses symbols, all symbols must106// be resolved before calling Load.107//108// If loading the program produces output from the eBPF kernel verifier,109// the output is returned in the log string.110func (p *Prog) Load(s *InstructionStream) (log string, err error) {111 if s.empty() {112 return "", errors.New("ebpf: empty instruction stream")113 }114 if s.hasUnresolvedSymbols() {115 return "", errors.New("ebpf: unresolved symbols in instruction stream")116 }117 insns := s.instructions()118 logbuf := make([]byte, defaultLogBufSize)119 attr := progLoadAttr{120 Type: p.Type,121 InstructionCount: uint32(len(insns)),122 Instructions: iptr(insns),123 License: bptr(nullTerminatedString(p.License)),124 LogLevel: 1,125 LogBufSize: uint32(len(logbuf)),126 LogBuf: bptr(logbuf),127 KernelVersion: p.KernelVersion,128 Name: newObjectName(p.ObjectName),129 IfIndex: p.IfIndex,130 ExpectedAttachType: p.ExpectedAttachType,131 }132 if p.StrictAlignment {133 attr.Flags = loadStrictAlignment134 }135 pfd := new(progFD)136 err = pfd.Init(&attr)137 for i := 0; i < len(logbuf); i++ {138 if logbuf[i] == 0 {139 log = string(logbuf[:i])140 break141 }142 }143 if err != nil {144 return log, err145 }146 p.pfd = pfd147 return log, nil148}149// Socket represents a socket an eBPF program can be attached to.150//151// Note that implementations of syscall.RawConn also satisfy Socket.152type Socket interface {153 Control(fn func(fd uintptr)) error154}155// RawSocketFD is an implementation of Socket that uses a raw file descriptor.156type RawSocketFD int157// Control calls fn on raw. It always returns nil.158func (raw RawSocketFD) Control(fn func(fd uintptr)) error {159 fn(uintptr(raw))160 return nil161}162var errProgNotLoaded = errors.New("ebpf: program not loaded")163// AttachToSocket attaches the program to a socket.164//165// It sets the SO_ATTACH_BPF option, at the SOL_SOCKET level.166func (p *Prog) AttachToSocket(sock Socket) error {167 if p.pfd == nil {168 return errProgNotLoaded169 }170 var err error171 cerr := sock.Control(func(fd uintptr) {172 err = p.pfd.AttachToSocket(int(fd))173 })174 if cerr != nil {175 return cerr176 }177 return err178}179// AttachToCGroup attaches the program to a control group.180//181// TODO(acln): implement this182func (p *Prog) AttachToCGroup(fd int, typ AttachType, flag CGroupAttachFlag) error {183 return errNotImplemented184}185// DetachFromSocket detaches the program from the specified socket.186func (p *Prog) DetachFromSocket(sock Socket) error {187 if p.pfd == nil {188 return errProgNotLoaded189 }190 var err error191 cerr := sock.Control(func(fd uintptr) {192 err = p.pfd.DetachFromSocket(int(fd))193 })194 if cerr != nil {195 return cerr196 }197 return err198}199// TestRun specifies a test run for an eBPF program.200type TestRun struct {201 // Input contains the input for the eBPF program.202 Input []byte203 // Output is the memory area where the output of the204 // program will be stored.205 //206 // TODO(acln): document the ENOSPC207 Output []byte208 // Repeat configures the number of times the program is to be209 // executed. The default value of 0 means one execution.210 Repeat uint32211}212// TestResults holds the results of a test run.213type TestResults struct {214 // ReturnValue is the return value of the eBPF program.215 ReturnValue uint32216 // Duration is the total execution time, in nanoseconds.217 Duration uint32218 // Output is the output slice. It aliases TestRun.Output, but its219 // length is set to the length returned by the kernel.220 Output []byte221 // TestRun is the associated test run configuration.222 TestRun TestRun223}224// DoTestRun executes a test run of the program.225func (p *Prog) DoTestRun(tr TestRun) (*TestResults, error) {226 if p.pfd == nil {227 return nil, errProgNotLoaded228 }229 return p.pfd.DoTestRun(tr)230}231// Unload unloads the program from the kernel and releases the associated232// file descriptor.233func (p *Prog) Unload() error {234 if p.pfd == nil {235 return errProgNotLoaded236 }237 return p.pfd.Close()238}239// progFD is a low level wrapper around a bpf program file descriptor.240type progFD struct {241 bfd bpfFD242}243func (pfd *progFD) Init(attr *progLoadAttr) error {244 rawfd, err := loadProg(attr)245 if err != nil {246 return wrapCmdError(cmdProgLoad, err)247 }248 if err := pfd.bfd.Init(rawfd, unix.Close); err != nil {249 return err250 }251 // TODO(acln): what do we do about the attach type?252 return nil253}254func (pfd *progFD) AttachToSocket(sockfd int) error {255 return pfd.bfd.ProgAttach(sockfd, unix.SOL_SOCKET)256}257func (pfd *progFD) DetachFromSocket(sockfd int) error {258 return pfd.bfd.ProgDetach(sockfd, unix.SOL_SOCKET)259}260func (pfd *progFD) DoTestRun(tr TestRun) (*TestResults, error) {261 return pfd.bfd.ProgTestRun(tr)262}263func (pfd *progFD) Close() error {264 return pfd.bfd.Close()265}266type progLoadAttr struct {267 Type ProgType268 InstructionCount uint32269 Instructions u64ptr270 License u64ptr // pointer to null-terminated string271 LogLevel uint32272 LogBufSize uint32273 LogBuf u64ptr274 KernelVersion uint32275 Flags uint32276 Name objectName277 IfIndex uint32278 ExpectedAttachType AttachType279}280func loadProg(attr *progLoadAttr) (int, error) {281 return bpf(cmdProgLoad, unsafe.Pointer(attr), unsafe.Sizeof(*attr))282}...
methods.go
Source:methods.go
...35// LookupMethod returns the implementation of the method of type T36// identified by (pkg, name). It returns nil if the method exists but37// is abstract, and panics if T has no such method.38//39func (prog *Program) LookupMethod(T types.Type, pkg *types.Package, name string) *Function {40 sel := prog.MethodSets.MethodSet(T).Lookup(pkg, name)41 if sel == nil {42 panic(fmt.Sprintf("%s has no method %s", T, types.Id(pkg, name)))43 }44 return prog.MethodValue(sel)45}46// methodSet contains the (concrete) methods of a non-interface type.47type methodSet struct {48 mapping map[string]*Function // populated lazily49 complete bool // mapping contains all methods50}51// Precondition: !isInterface(T).52// EXCLUSIVE_LOCKS_REQUIRED(prog.methodsMu)53func (prog *Program) createMethodSet(T types.Type) *methodSet {54 mset, ok := prog.methodSets.At(T).(*methodSet)55 if !ok {56 mset = &methodSet{mapping: make(map[string]*Function)}57 prog.methodSets.Set(T, mset)58 }59 return mset60}61// EXCLUSIVE_LOCKS_REQUIRED(prog.methodsMu)62func (prog *Program) addMethod(mset *methodSet, sel *types.Selection) *Function {63 if sel.Kind() == types.MethodExpr {64 panic(sel)65 }66 id := sel.Obj().Id()67 fn := mset.mapping[id]68 if fn == nil {69 obj := sel.Obj().(*types.Func)70 needsPromotion := len(sel.Index()) > 171 needsIndirection := !isPointer(recvType(obj)) && isPointer(sel.Recv())72 if needsPromotion || needsIndirection {73 fn = makeWrapper(prog, sel)74 } else {75 fn = prog.declaredFunc(obj)76 }77 if fn.Signature.Recv() == nil {78 panic(fn) // missing receiver79 }80 mset.mapping[id] = fn81 }82 return fn83}84// RuntimeTypes returns a new unordered slice containing all85// concrete types in the program for which a complete (non-empty)86// method set is required at run-time.87//88// Thread-safe.89//90// EXCLUSIVE_LOCKS_ACQUIRED(prog.methodsMu)91//92func (prog *Program) RuntimeTypes() []types.Type {93 prog.methodsMu.Lock()94 defer prog.methodsMu.Unlock()95 var res []types.Type96 prog.methodSets.Iterate(func(T types.Type, v interface{}) {97 if v.(*methodSet).complete {98 res = append(res, T)99 }100 })101 return res102}103// declaredFunc returns the concrete function/method denoted by obj.104// Panic ensues if there is none.105//106func (prog *Program) declaredFunc(obj *types.Func) *Function {107 if v := prog.packageLevelValue(obj); v != nil {108 return v.(*Function)109 }110 panic("no concrete method: " + obj.String())111}112// needMethodsOf ensures that runtime type information (including the113// complete method set) is available for the specified type T and all114// its subcomponents.115//116// needMethodsOf must be called for at least every type that is an117// operand of some MakeInterface instruction, and for the type of118// every exported package member.119//120// Precondition: T is not a method signature (*Signature with Recv()!=nil).121//122// Thread-safe. (Called via emitConv from multiple builder goroutines.)123//124// TODO(adonovan): make this faster. It accounts for 20% of SSA build time.125//126// EXCLUSIVE_LOCKS_ACQUIRED(prog.methodsMu)127//128func (prog *Program) needMethodsOf(T types.Type) {129 prog.methodsMu.Lock()130 prog.needMethods(T, false)131 prog.methodsMu.Unlock()132}133// Precondition: T is not a method signature (*Signature with Recv()!=nil).134// Recursive case: skip => don't create methods for T.135//136// EXCLUSIVE_LOCKS_REQUIRED(prog.methodsMu)137//138func (prog *Program) needMethods(T types.Type, skip bool) {139 // Each package maintains its own set of types it has visited.140 if prevSkip, ok := prog.runtimeTypes.At(T).(bool); ok {141 // needMethods(T) was previously called142 if !prevSkip || skip {143 return // already seen, with same or false 'skip' value144 }145 }146 prog.runtimeTypes.Set(T, skip)147 tmset := prog.MethodSets.MethodSet(T)148 if !skip && !isInterface(T) && tmset.Len() > 0 {149 // Create methods of T.150 mset := prog.createMethodSet(T)151 if !mset.complete {152 mset.complete = true153 n := tmset.Len()154 for i := 0; i < n; i++ {155 prog.addMethod(mset, tmset.At(i))156 }157 }158 }159 // Recursion over signatures of each method.160 for i := 0; i < tmset.Len(); i++ {161 sig := tmset.At(i).Type().(*types.Signature)162 prog.needMethods(sig.Params(), false)163 prog.needMethods(sig.Results(), false)164 }165 switch t := T.(type) {166 case *types.Basic:167 // nop168 case *types.Interface:169 // nop---handled by recursion over method set.170 case *types.Pointer:171 prog.needMethods(t.Elem(), false)172 case *types.Slice:173 prog.needMethods(t.Elem(), false)174 case *types.Chan:175 prog.needMethods(t.Elem(), false)176 case *types.Map:177 prog.needMethods(t.Key(), false)178 prog.needMethods(t.Elem(), false)179 case *types.Signature:180 if t.Recv() != nil {181 panic(fmt.Sprintf("Signature %s has Recv %s", t, t.Recv()))182 }183 prog.needMethods(t.Params(), false)184 prog.needMethods(t.Results(), false)185 case *types.Named:186 // A pointer-to-named type can be derived from a named187 // type via reflection. It may have methods too.188 prog.needMethods(types.NewPointer(T), false)189 // Consider 'type T struct{S}' where S has methods.190 // Reflection provides no way to get from T to struct{S},191 // only to S, so the method set of struct{S} is unwanted,192 // so set 'skip' flag during recursion.193 prog.needMethods(t.Underlying(), true)194 case *types.Array:195 prog.needMethods(t.Elem(), false)196 case *types.Struct:197 for i, n := 0, t.NumFields(); i < n; i++ {198 prog.needMethods(t.Field(i).Type(), false)199 }200 case *types.Tuple:201 for i, n := 0, t.Len(); i < n; i++ {202 prog.needMethods(t.At(i).Type(), false)203 }204 default:205 panic(T)206 }207}...
Type
Using AI Code Generation
1import "fmt"2func main() {3 a.Type()4}5import "fmt"6func main() {7 a.Type()8}9import "fmt"10func main() {11 a.Type()12}13import "fmt"14func main() {15 a.Type()16}17import "fmt"18func main() {19 a.Type()20}21import "fmt"22func main() {23 a.Type()24}25import "fmt"26func main() {27 a.Type()28}29import "fmt"30func main() {31 a.Type()32}33import "fmt"34func main() {35 a.Type()36}37import "fmt"38func main() {39 a.Type()40}41import "fmt"42func main() {43 a.Type()44}45import "fmt"46func main() {47 a.Type()48}49import "fmt"50func main() {51 a.Type()52}53import
Type
Using AI Code Generation
1import (2func main() {3 p := prog.Prog{}4 p.Type()5}6import "fmt"7type Prog struct{}8func (p Prog) Type() {9 fmt.Println("I am a Prog")10}11When we import a package using the relative path, the package is available at the same level as the file importing it. The relative path starts with the current directory. The re
Type
Using AI Code Generation
1import "fmt"2type prog struct {3}4func main() {5p1 := prog{6}7p1.Type()8}9func (p prog) Type() {10fmt.Println("Type method:", p.language, p.rating)11}
Type
Using AI Code Generation
1import "fmt"2func main() {3a.Type()4}5import "fmt"6func main() {7a.Type()8}9import "fmt"10func main() {11a.Type()12}13import "fmt"14func main() {15a.Type()16}17import "fmt"18func main() {19a.Type()20}21import "fmt"22func main() {23a.Type()24}25import "fmt"26func main() {27a.Type()28}29import "fmt"30func main() {31a.Type()32}33import "fmt"34func main() {35a.Type()36}37import "fmt"38func main() {39a.Type()40}41import "fmt"42func main() {43a.Type()44}45import "fmt"46func main() {47a.Type()48}49import "fmt"50func main() {51a.Type()52}53import "fmt"54func main() {55a.Type()56}
Type
Using AI Code Generation
1import "fmt"2func main() {3 p.Type()4}5import "fmt"6type prog struct{}7func (p prog) Type() {8 fmt.Println("I am a prog type")9}10prog.go:10: cannot use p (type prog) as type prog in argument to Type:11 prog does not implement prog (missing Type method)12import "fmt"13type prog struct{}14func (p prog) Type() {15 fmt.Println("I am a prog type")16}17func (p prog) Type() {18 fmt.Println("I am a prog type")19}20prog.go:10: cannot use p (type prog) as type prog in argument to Type:21 prog does not implement prog (missing Type method)22import "fmt"23type prog struct{}24func (p prog) Type() {25 fmt.Println("I am a prog type")26}27func (p prog) Type() {28 fmt.Println("I am a prog type")29}30prog.go:10: cannot use p (type prog) as type prog in argument to Type:31 prog does not implement prog (missing Type method)32import "fmt"33type prog struct{}34func (p prog) Type() {35 fmt.Println("I am a prog
Type
Using AI Code Generation
1import "fmt"2import "GoLang/2"3func main() {4 fmt.Println(x)5}6type Type struct {7}8func (t Type) Type() int {9}10type Type struct {11}12func (t Type) Type() int {13}14type Type struct {15}16func (t Type) Type() int {17}18type Type struct {19}20func (t Type) Type() int {21}
Type
Using AI Code Generation
1import (2func main() {3 p1 = prog{10, "GoLang"}4 fmt.Println("p1 = ", p1)5 fmt.Println("p1.id = ", p1.id)6 fmt.Println("p1.name = ", p1.name)7 p1.Type()8}9import (10func main() {11 p1 = prog{10, "GoLang"}12 fmt.Println("p1 = ", p1)13 fmt.Println("p1.id = ", p1.id)14 fmt.Println("p1.name = ", p1.name)15 p1.Type()16}17import (18func main() {19 p1 = prog{10, "GoLang"}20 fmt.Println("p1 = ", p1)21 fmt.Println("p1.id = ", p1.id)22 fmt.Println("p1.name = ", p1.name)23 p1.Type()24}25import (26func main() {27 p1 = prog{10, "GoLang"}28 fmt.Println("p1 = ", p1)29 fmt.Println("p1.id = ", p1.id)30 fmt.Println("p1.name = ", p1.name)31 p1.Type()32}33import (34func main() {35 p1 = prog{10, "GoLang"}36 fmt.Println("p1 = ", p1)37 fmt.Println("p1.id = ", p1.id)38 fmt.Println("p1.name = ", p1.name)39 p1.Type()40}
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.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!