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Syzkaller
main
checkNetlinkPolicy

How to use checkNetlinkPolicy method of main Package

Best Syzkaller code snippet using main.checkNetlinkPolicy

check.go

Source:check.go

...435			return nil, fmt.Errorf("failed to read policy %v (%v) at %v: %v",436				kernelName, name, symb.Addr, err)437		}438		policy := (*[1e6]nlaPolicy)(unsafe.Pointer(&binary[0]))[:symb.Size/int(unsafe.Sizeof(nlaPolicy{}))]439		warnings2, attrs2, err := checkNetlinkPolicy(structMap, typ, fields, astStruct, policy)440		if err != nil {441			return nil, err442		}443		if warnings1 == nil || len(*warnings1) > len(warnings2) {444			warnings1 = &warnings2445			policy1 = policy446			attrs1 = attrs2447		}448	}449	if warnings1 != nil {450		warnings = append(warnings, *warnings1...)451		ca := checkedAttrs[kernelName]452		if ca == nil {453			ca = &checkAttr{454				pos:    astStruct.Pos,455				name:   name,456				policy: policy1,457				attrs:  make(map[int]bool),458			}459			checkedAttrs[kernelName] = ca460		}461		for attr := range attrs1 {462			ca.attrs[attr] = true463		}464	}465	return warnings, nil466}467type checkAttr struct {468	pos    ast.Pos469	name   string470	policy []nlaPolicy471	attrs  map[int]bool472}473func checkMissingAttrs(checkedAttrs map[string]*checkAttr) []Warn {474	// Missing attribute checking is a bit tricky because we may split a single475	// kernel policy into several policies for better precision.476	// They have different names, but map to the same kernel policy.477	// We want to report a missing attribute iff it's missing in all copies of the policy.478	var warnings []Warn479	for _, ca := range checkedAttrs {480		var missing []int481		for i, pol := range ca.policy {482			// Ignore attributes that are not described in the policy483			// (some of them are unused at all, however there are cases where484			// they are not described but used as inputs, and these are actually485			// the worst ones).486			if !ca.attrs[i] && (pol.typ != NLA_UNSPEC && pol.typ != NLA_REJECT || pol.len != 0) {487				missing = append(missing, i)488			}489		}490		// If we miss too many, there is probably something else going on.491		if len(missing) != 0 && len(missing) <= 5 {492			warnings = append(warnings, Warn{493				pos: ca.pos,494				typ: WarnNetlinkBadAttr,495				msg: fmt.Sprintf("%v: missing attributes: %v", ca.name, missing),496			})497		}498	}499	return warnings500}501func isNetlinkPolicy(fields []prog.Field) bool {502	haveAttr := false503	for _, fld := range fields {504		field := fld.Type505		if prog.IsPad(field) {506			continue507		}508		if isNlattr(field) {509			haveAttr = true510			continue511		}512		if arr, ok := field.(*prog.ArrayType); ok {513			field = arr.Elem514		}515		if field1, ok := field.(*prog.StructType); ok {516			if isNetlinkPolicy(field1.Fields) {517				continue518			}519		}520		if field1, ok := field.(*prog.UnionType); ok {521			if isNetlinkPolicy(field1.Fields) {522				continue523			}524		}525		return false526	}527	return haveAttr528}529const (530	nlattrT  = "nlattr_t"531	nlattrTT = "nlattr_tt"532)533func isNlattr(typ prog.Type) bool {534	name := typ.TemplateName()535	return name == nlattrT || name == nlattrTT536}537func checkNetlinkPolicy(structMap map[string]prog.Type, typ prog.Type, fields []prog.Field,538	astStruct *ast.Struct, policy []nlaPolicy) ([]Warn, map[int]bool, error) {539	var warnings []Warn540	warn := func(pos ast.Pos, typ, msg string, args ...interface{}) {541		warnings = append(warnings, Warn{pos: pos, typ: typ, msg: fmt.Sprintf(msg, args...)})542	}543	checked := make(map[int]bool)544	ai := 0545	for _, field := range fields {546		if prog.IsPad(field.Type) {547			continue548		}549		fld := astStruct.Fields[ai]550		ai++551		if !isNlattr(field.Type) {...

checkNetlinkPolicy

Using AI Code Generation

1func main() {2    checkNetlinkPolicy()3}4func main() {5    checkNetlinkPolicy()6}7func main() {8    checkNetlinkPolicy()9}10func main() {11    checkNetlinkPolicy()12}13func main() {14    checkNetlinkPolicy()15}16func main() {17    checkNetlinkPolicy()18}19func main() {20    checkNetlinkPolicy()21}22func main() {23    checkNetlinkPolicy()24}25func main() {26    checkNetlinkPolicy()27}28func main() {29    checkNetlinkPolicy()30}31func main() {32    checkNetlinkPolicy()33}34func main()

checkNetlinkPolicy

Using AI Code Generation

1import (2func main() {3	conn, err := net.ListenPacket("netlink", "0")4	if err != nil {5		fmt.Println("error in creating socket")6	}7	defer conn.Close()8	socket, err := netlink.NewSocketAt(netlink.NETLINK_ROUTE, 0)9	if err != nil {10		fmt.Println("error in creating socket")11	}12	defer socket.Close()13	msg := netlink.Message{14		Header: netlink.Header{

checkNetlinkPolicy

Using AI Code Generation

1import (2func main() {3	fmt.Println(runtime.GOOS)4	fmt.Println(runtime.GOARCH)5	fmt.Println(runtime.NumCPU())6	fmt.Println(runtime.NumGoroutine())7	fmt.Println(runtime.Version())8	fmt.Println(runtime.Compiler)9}

checkNetlinkPolicy

Using AI Code Generation

1import (2func main() {3	sock, err = syscall.NetlinkSocket(syscall.NETLINK_ROUTE, syscall.RTMGRP_IPV4_IFADDR)4	if err != nil {5		fmt.Println("Error creating Netlink Socket: ", err)6	}7	err = checkNetlinkPolicy(sock)8	if err != nil {9		fmt.Println("Error checking Netlink Policy: ", err)10	}11	fmt.Println("Netlink Policy check passed")12}13import (14func main() {15	sock, err = syscall.NetlinkSocket(syscall.NETLINK_ROUTE, syscall.RTMGRP_IPV4_IFADDR)16	if err != nil {17		fmt.Println("Error creating Netlink Socket: ", err)18	}19	err = checkNetlinkPolicy(sock)20	if err != nil {21		fmt.Println("Error checking Netlink Policy: ", err)22	}23	fmt.Println("Netlink Policy check passed")24}25import (26func main() {27	sock, err = syscall.NetlinkSocket(syscall.NETLINK_ROUTE, syscall.RTMGRP_IPV4_IFADDR)28	if err != nil {29		fmt.Println("Error creating Netlink Socket: ", err)30	}31	err = checkNetlinkPolicy(sock)32	if err != nil {33		fmt.Println("Error checking Netlink Policy: ", err)34	}35	fmt.Println("Netlink Policy check passed")36}37import (38func main() {39	sock, err = syscall.NetlinkSocket(syscall.NETLINK_ROUTE, syscall.RTMGRP_IPV4_IFADDR)40	if err != nil {41		fmt.Println("Error creating Netlink Socket:

checkNetlinkPolicy

Using AI Code Generation

1import (2func checkNetlinkPolicy() {3    conn, err := netlink.NewNetlinkSocketAt(syscall.NETLINK_ROUTE, syscall.NETLINK_EXT_ACK)4    if err != nil {5        fmt.Println("Error creating netlink socket: ", err)6    }7    defer conn.Close()8    req := netlink.Message{9        Header: netlink.Header{10        },11        Data: nl.NewRtGenmsg(nl.FAMILY_ALL, 0),12    }13    err = conn.Send(req)14    if err != nil {15        fmt.Println("Error sending netlink request: ", err)16    }17    msgs, err := conn.Receive()18    if err != nil {19        fmt.Println("Error receiving netlink response: ", err)20    }21    for _, msg := range msgs {22        if msg.Header.Type == nl.NLMSG_ERROR {23            err = nl.ParseError(msg)24            if err != nil {25                fmt.Println("Error parsing netlink error: ", err)26            }27        }28        if msg.Header.Type == nl.NLMSG_DONE {29        }30    }31}

checkNetlinkPolicy

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    n1.checkNetlinkPolicy()5}6import (7func main() {8    fmt.Println("Hello, playground")9    n1.checkNetlinkPolicy()10}11import (12func main() {13    fmt.Println("Hello, playground")14    n1.checkNetlinkPolicy()15}16import (17func main() {18    fmt.Println("Hello, playground")19    n1.checkNetlinkPolicy()20}21import (22func main() {23    fmt.Println("Hello, playground")24    n1.checkNetlinkPolicy()25}26import (27func main() {28    fmt.Println("Hello, playground")29    n1.checkNetlinkPolicy()30}31import (32func main() {33    fmt.Println("Hello, playground")34    n1.checkNetlinkPolicy()35}36import (37func main() {38    fmt.Println("Hello, playground")39    n1.checkNetlinkPolicy()40}41import (42func main() {43    fmt.Println("Hello, playground")

checkNetlinkPolicy

Using AI Code Generation

1import "fmt"2func main() {3    n := new(Netlink)4    n.checkNetlinkPolicy()5    fmt.Println("Hello, playground")6}7import "fmt"8func main() {9    n := new(Netlink)10    n.checkNetlinkPolicy()11    fmt.Println("Hello, playground")12}13import "fmt"14func main() {15    n := new(Netlink)16    n.checkNetlinkPolicy()17    fmt.Println("Hello, playground")18}19import "fmt"20func main() {21    n := new(Netlink)22    n.checkNetlinkPolicy()23    fmt.Println("Hello, playground")24}25import "fmt"26func main() {27    n := new(Netlink)28    n.checkNetlinkPolicy()29    fmt.Println("Hello, playground")30}31import "fmt"32func main() {33    n := new(Netlink)34    n.checkNetlinkPolicy()35    fmt.Println("Hello, playground")36}37import "fmt"38func main() {39    n := new(Netlink)40    n.checkNetlinkPolicy()41    fmt.Println("Hello, playground")42}43import "fmt"44func main() {45    n := new(Netlink)46    n.checkNetlinkPolicy()47    fmt.Println("Hello, playground")48}49import "fmt"50func main() {51    n := new(Netlink)52    n.checkNetlinkPolicy()53    fmt.Println("Hello, playground")54}

checkNetlinkPolicy

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello, playground")4	const (5	s, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_RAW, NETLINK_ROUTE)6	if err != nil {7		fmt.Println("Error creating socket")8	}9	addr := &syscall.SockaddrNetlink{10	}11	err = syscall.Bind(s, addr)12	if err != nil {13		fmt.Println("Error binding socket")14	}15	msg := syscall.NetlinkMessage{16		Header: syscall.NlMsghdr{17		},18	}19	err = syscall.Sendmsg(s, msg.Bytes(), nil, addr, 0)20	if err != nil {21		fmt.Println("Error sending message")22	}23	b := make([]byte, 4096)24	n, _, err := syscall.Recvfrom(s, b, 0)25	if err != nil {26		fmt.Println("Error receiving message")27	}28	messages, err := syscall.ParseNetlinkMessage(b[:n])29	if err != nil {30		fmt.Println("Error parsing message")31	}32	for _, m := range messages {33		fmt.Println(m.Header)

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