How to use BitfieldOffset method of prog Package

Best Syzkaller code snippet using prog.BitfieldOffset

csource.go

Source:csource.go

...301}302func (ctx *context) copyin(w *bytes.Buffer, csumSeq *int, copyin prog.ExecCopyin) {303	switch arg := copyin.Arg.(type) {304	case prog.ExecArgConst:305		if arg.BitfieldOffset == 0 && arg.BitfieldLength == 0 {306			ctx.copyinVal(w, copyin.Addr, arg.Size, ctx.constArgToStr(arg, true, false), arg.Format)307		} else {308			if arg.Format != prog.FormatNative && arg.Format != prog.FormatBigEndian {309				panic("bitfield+string format")310			}311			htobe := ""312			if ctx.target.LittleEndian && arg.Format == prog.FormatBigEndian {313				htobe = fmt.Sprintf("htobe%v", arg.Size*8)314			}315			bitfieldOffset := arg.BitfieldOffset316			if !ctx.target.LittleEndian {317				bitfieldOffset = arg.Size*8 - arg.BitfieldOffset - arg.BitfieldLength318			}319			fmt.Fprintf(w, "\tNONFAILING(STORE_BY_BITMASK(uint%v, %v, 0x%x, %v, %v, %v));\n",320				arg.Size*8, htobe, copyin.Addr, ctx.constArgToStr(arg, false, false),321				bitfieldOffset, arg.BitfieldLength)322		}323	case prog.ExecArgResult:324		ctx.copyinVal(w, copyin.Addr, arg.Size, ctx.resultArgToStr(arg), arg.Format)325	case prog.ExecArgData:326		fmt.Fprintf(w, "\tNONFAILING(memcpy((void*)0x%x, \"%s\", %v));\n",327			copyin.Addr, toCString(arg.Data, arg.Readable), len(arg.Data))328	case prog.ExecArgCsum:329		switch arg.Kind {330		case prog.ExecArgCsumInet:331			*csumSeq++...

encodingexec_test.go

Source:encodingexec_test.go

...270								Addr: dataOffset + 0,271								Arg: ExecArgConst{272									Size:           2,273									Value:          0x42,274									BitfieldOffset: 0,275									BitfieldLength: 10,276								},277							},278							{279								Addr: dataOffset + 8,280								Arg: ExecArgConst{281									Size:  8,282									Value: 0x42,283								},284							},285							{286								Addr: dataOffset + 16,287								Arg: ExecArgConst{288									Size:           2,289									Value:          0x42,290									BitfieldOffset: 0,291									BitfieldLength: 5,292								},293							},294							{295								Addr: dataOffset + 16,296								Arg: ExecArgConst{297									Size:           2,298									Value:          0x42,299									BitfieldOffset: 5,300									BitfieldLength: 6,301								},302							},303							{304								Addr: dataOffset + 16,305								Arg: ExecArgConst{306									Size:           4,307									Value:          0x42,308									BitfieldOffset: 11,309									BitfieldLength: 15,310								},311							},312							{313								Addr: dataOffset + 20,314								Arg: ExecArgConst{315									Size:           2,316									Value:          0x42,317									BitfieldOffset: 0,318									BitfieldLength: 11,319								},320							},321							{322								Addr: dataOffset + 22,323								Arg: ExecArgConst{324									Size:           2,325									Format:         FormatBigEndian,326									Value:          0x42,327									BitfieldOffset: 0,328									BitfieldLength: 11,329								},330							},331							{332								Addr: dataOffset + 24,333								Arg: ExecArgConst{334									Size:  1,335									Value: 0x42,336								},337							},338						},339					},340				},341			},...

BitfieldOffset

Using AI Code Generation

1import (2const (3func main() {4	if err := rlimit.RemoveMemlock(); err != nil {5		log.Fatalf("failed to remove rlimit: %v", err)6	}7	objs := MustLoadObject("2.o")8	prog := MustFindProgram(objs, ProgType)9	progLink, err := link.AttachXDP(os.Args[1], prog)10	if err != nil {11		log.Fatalf("failed to attach XDP program: %v", err)12	}13	mapKey := uint32(0)14	mapValue := uint32(0)15	sockmap, err := objs.DemoMap.Open(&mapKey, &mapValue)16	if err != nil {17		log.Fatalf("failed to open map: %v", err)18	}19	sock, err := os.OpenFile(os.Args[2], os.O_RDONLY, 0)20	if err != nil {21		log.Fatalf("failed to open socket: %v", err)22	}23	sockFd := int(sock.Fd())24	if err := sockmap.Put(uint32(sockFd), uint32(0)); err != nil {25		log.Fatalf("failed to insert into map: %v", err)26	}27	off, err := prog.BitfieldOffset("skc_ipv6only")28	if err != nil {29		log.Fatalf("failed to find offset of skc_ipv6only: %v", err)30	}

BitfieldOffset

Using AI Code Generation

1import (2func main() {3    if err := rlimit.RemoveLimits(); err != nil {4        log.Fatalf("Failed to remove rlimits: %v", err)5    }6    m, err := ebpf.NewMap(&ebpf.MapSpec{7    })8    if err != nil {9        log.Fatalf("Failed to create map: %v", err)10    }11    defer m.Close()12    prog, err := ebpf.NewProgram(&ebpf.ProgramSpec{13        Instructions: asm.Instructions{14            asm.LoadImm(asm.R1, 0, asm.DWord),15            asm.Mov.Reg(asm.R2, asm.R1),16            asm.LoadMapPtr(asm.R1, m.FD()),17            asm.Mov.Reg(asm.R2, asm.R1),18            asm.Mov.Reg(asm.R3, asm.R1),19            asm.FnMapUpdateElem.Call(),20            asm.Return(),21        },22    })23    if err != nil {24        log.Fatalf("Failed to create program: %v", err)25    }26    defer prog.Close()27    if err := link.AttachXDP(os.Args[1], prog); err != nil {28        log.Fatalf("Failed to attach XDP program: %v", err)29    }30    defer link.DetachXDP(os.Args[1])

BitfieldOffset

Using AI Code Generation

1import (2type MyStruct struct {3}4func main() {5	file, err := elf.Open("2.o")6	if err != nil {7		log.Fatal(err)8	}9	defer file.Close()10	prog, err := file.Load("xdp_prog1")11	if err != nil {12		log.Fatal(err)13	}14	defer prog.Close()15	map1, err := file.LoadPinnedMap("xdp_map1", elf.MapSpec{16	})17	if err != nil {18		log.Fatal(err)19	}20	defer map1.Close()21	map2, err := file.LoadPinnedMap("xdp_map2", elf.MapSpec{22	})23	if err != nil {24		log.Fatal(err)25	}26	defer map2.Close()27	map3, err := file.LoadPinnedMap("xdp_map3", elf.MapSpec{28	})29	if err != nil {30		log.Fatal(err)31	}32	defer map3.Close()33	map4, err := file.LoadPinnedMap("xdp_map4", elf.MapSpec{34	})35	if err != nil {36		log.Fatal(err)37	}38	defer map4.Close()39	map5, err := file.LoadPinnedMap("xdp_map5", elf.MapSpec{40	})41	if err != nil {42		log.Fatal(err)43	}44	defer map5.Close()45	map6, err := file.LoadPinnedMap("xdp_map6", elf.MapSpec{

BitfieldOffset

Using AI Code Generation

1import "fmt"2import "github.com/google/syzkaller/prog"3func main() {4    s.Fields = append(s.Fields, prog.FieldType{Offset: 0, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 1}})5    s.Fields = append(s.Fields, prog.FieldType{Offset: 4, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 2}})6    s.Fields = append(s.Fields, prog.FieldType{Offset: 8, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 3}})7    s.Fields = append(s.Fields, prog.FieldType{Offset: 12, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 4}})8    s.Fields = append(s.Fields, prog.FieldType{Offset: 16, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 5}})9    s.Fields = append(s.Fields, prog.FieldType{Offset: 20, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 6}})10    s.Fields = append(s.Fields, prog.FieldType{Offset: 24, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 7}})11    s.Fields = append(s.Fields, prog.FieldType{Offset: 28, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 8}})12    s.Fields = append(s.Fields, prog.FieldType{Offset: 32, Type: &prog.ConstType{TypeCommon: prog.TypeCommon{TypeName: "const", TypeSize: 4}, Val: 9}})13    s.Fields = append(s.Fields, prog.FieldType{Offset: 36, Type: &prog.ConstType{TypeCommon: prog

BitfieldOffset

Using AI Code Generation

1import (2func main() {3	prog, err := ebpf.LoadCollectionSpec("collection.o")4	if err != nil {5		panic(err)6	}7	fmt.Println("BitfieldOffset of prog1 is :", prog1.BitfieldOffset())8}9Recommended Posts: How to use BitfieldSize() method of prog class in eBPF?10How to use BitfieldOffset() method of map class in eBPF?11How to use BitfieldSize() method of map class in eBPF?12How to use BTF() method of map class in eBPF?13How to use BTF() method of prog class in eBPF?14How to use Name() method of map class in eBPF?15How to use Name() method of prog class in eBPF?16How to use Type() method of map class in eBPF?17How to use Type() method of prog class in eBPF?18How to use ID() method of map class in eBPF?19How to use ID() method of prog class in eBPF?20How to use FD() method of map class in eBPF?21How to use FD() method of prog class in eBPF?22How to use LookupElement() method of map class in eBPF?23How to use LookupElement() method of prog class in eBPF?24How to use LookupAndDeleteElement() method of map class in eBPF?25How to use LookupAndDeleteElement() method of prog class in eBPF?26How to use UpdateElement() method of map class in eBPF?27How to use UpdateElement() method of prog class in eBPF?28How to use DeleteElement() method of map class in eBPF?29How to use DeleteElement() method of prog class in eBPF?30How to use Pin() method of map class in eBPF?31How to use Pin() method of prog class in eBPF?32How to use Unpin() method of map class in eBPF?33How to use Unpin() method of prog class in eBPF?34How to use Close() method of map class in

BitfieldOffset

Using AI Code Generation

1import (2func main() {3  prog, _ := ebpf.LoadCollectionSpec("/sys/fs/bpf/xdp_prog")4  fmt.Println(prog.Programs["xdp_prog"].BitfieldOffset("xdp_md", "rx_queue_index"))5}6import (7func main() {8  prog, _ := ebpf.LoadCollectionSpec("/sys/fs/bpf/xdp_prog")9  prog.Programs["xdp_prog"].SetBitfieldOffset("xdp_md", "rx_queue_index", 1)10  fmt.Println(prog.Programs["xdp_prog"].BitfieldOffset("xdp_md", "rx_queue_index"))11}

BitfieldOffset

Using AI Code Generation

1import (2func main() {3	ins := asm.Instructions{4		asm.Mov.Imm(asm.R1, 0x00000001),5		asm.And.Imm(asm.R2, asm.R1, 0x00000001),6		asm.Rsh.Imm(asm.R3, asm.R1, 1),7		asm.Rsh.Imm(asm.R4, asm.R1, 2),8		asm.Rsh.Imm(asm.R5, asm.R1, 3),9		asm.Rsh.Imm(asm.R6, asm.R1, 4),10		asm.Rsh.Imm(asm.R7, asm.R1, 5),11		asm.Rsh.Imm(asm.R8, asm.R1, 6),12		asm.Rsh.Imm(asm.R9, asm.R1, 7),13		asm.Rsh.Imm(asm.R10, asm.R1, 8),14		asm.Rsh.Imm(asm.R11, asm.R1, 9),15		asm.Rsh.Imm(asm.R12, asm.R1, 10),16		asm.Rsh.Imm(asm.R13, asm.R1, 11),17		asm.Rsh.Imm(asm.R14, asm.R1, 12),

BitfieldOffset

Using AI Code Generation

1import "fmt"2import "github.com/google/syzkaller/prog"3func main() {4	p := prog.MakeTarget("linux", "amd64", "test", nil)5	s := &prog.StructType{Fields: []prog.FieldType{6		prog.FieldType{Type: prog.IntTypeCommon{TypeCommon: prog.TypeCommon{TypeName: "int"}, BitfieldLength: 4, BitfieldOffset: 4}},7	}}8	fmt.Println(s.BitfieldOffset())9}10func (t *StructType) BitfieldOffset() uint64 {11	for _, f := range t.Fields {12		offset += f.Type.BitfieldOffset()13		if f.Type.BitfieldLength() != 0 {14		}15	}16}17func (t *IntTypeCommon) BitfieldOffset() uint64 {18}

BitfieldOffset

Using AI Code Generation

1import (2func main() {3	p, err := ebpfkit.NewProgramFromFile("test.o")4	if err != nil {5		panic(err)6	}7	defer p.Close()8	m, err := p.FindMapByName("test")9	if err != nil {10		panic(err)11	}12	m2, err := p.FindMapByName("test2")13	if err != nil {14		panic(err)15	}16	m3, err := p.FindMapByName("test3")17	if err != nil {18		panic(err)19	}20	m4, err := p.FindMapByName("test4")21	if err != nil {22		panic(err)23	}24	fmt.Println("Map: test")25	fmt.Println("Offset of field b: ", m.BitfieldOffset("b"))26	fmt.Println("Offset of field c: ", m.BitfieldOffset("c"))27	fmt.Println("Offset of field d: ", m.BitfieldOffset("d"))28	fmt.Println("Offset of field e: ", m.BitfieldOffset("e"))29	fmt.Println("Offset of field f: ", m.BitfieldOffset("f"))30	fmt.Println("Offset of field g: ", m.BitfieldOffset("g"))31	fmt.Println("Offset of field h: ", m.BitfieldOffset("h"))32	fmt.Println("Offset of field i: ", m.BitfieldOffset("i"))33	fmt.Println("Offset of field j: ", m.BitfieldOffset("j"))34	fmt.Println("Offset of field k: ", m.BitfieldOffset("k"))35	fmt.Println("Offset of field l: ", m.BitfieldOffset("l"))36	fmt.Println("Offset of field m: ", m.BitfieldOffset("m"))37	fmt.Println("Offset of field n: ", m.BitfieldOffset("n"))38	fmt.Println("Offset of field o: ", m.BitfieldOffset("o"))39	fmt.Println("Offset of field p: ", m.BitfieldOffset("p"))40	fmt.Println("Offset of field q: ", m.BitfieldOffset("q"))41	fmt.Println("Offset of field r: ", m.BitfieldOffset("r"))42	fmt.Println("Offset of field s: ", m.BitfieldOffset("s"))43	fmt.Println("Offset of field t: ", m.BitfieldOffset("t"))44	fmt.Println("Offset of field u: ", m

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