How to use Clone method of prog Package

Best Syzkaller code snippet using prog.Clone

cgroup.go

Source:cgroup.go

...25	cgroup, err := os.Open(opts.Path)26	if err != nil {27		return nil, fmt.Errorf("can't open cgroup: %s", err)28	}29	clone, err := opts.Program.Clone()30	if err != nil {31		cgroup.Close()32		return nil, err33	}34	var cg Link35	cg, err = newLinkCgroup(cgroup, opts.Attach, clone)36	if errors.Is(err, ErrNotSupported) {37		cg, err = newProgAttachCgroup(cgroup, opts.Attach, clone, flagAllowMulti)38	}39	if errors.Is(err, ErrNotSupported) {40		cg, err = newProgAttachCgroup(cgroup, opts.Attach, clone, flagAllowOverride)41	}42	if err != nil {43		cgroup.Close()44		clone.Close()45		return nil, err46	}47	return cg, nil48}49// LoadPinnedCgroup loads a pinned cgroup from a bpffs.50func LoadPinnedCgroup(fileName string, opts *ebpf.LoadPinOptions) (Link, error) {51	link, err := LoadPinnedRawLink(fileName, CgroupType, opts)52	if err != nil {53		return nil, err54	}55	return &linkCgroup{*link}, nil56}57type progAttachCgroup struct {58	cgroup     *os.File59	current    *ebpf.Program60	attachType ebpf.AttachType61	flags      cgroupAttachFlags62}63var _ Link = (*progAttachCgroup)(nil)64func (cg *progAttachCgroup) isLink() {}65func newProgAttachCgroup(cgroup *os.File, attach ebpf.AttachType, prog *ebpf.Program, flags cgroupAttachFlags) (*progAttachCgroup, error) {66	if flags&flagAllowMulti > 0 {67		if err := haveProgAttachReplace(); err != nil {68			return nil, fmt.Errorf("can't support multiple programs: %w", err)69		}70	}71	err := RawAttachProgram(RawAttachProgramOptions{72		Target:  int(cgroup.Fd()),73		Program: prog,74		Flags:   uint32(flags),75		Attach:  attach,76	})77	if err != nil {78		return nil, fmt.Errorf("cgroup: %w", err)79	}80	return &progAttachCgroup{cgroup, prog, attach, flags}, nil81}82func (cg *progAttachCgroup) Close() error {83	defer cg.cgroup.Close()84	defer cg.current.Close()85	err := RawDetachProgram(RawDetachProgramOptions{86		Target:  int(cg.cgroup.Fd()),87		Program: cg.current,88		Attach:  cg.attachType,89	})90	if err != nil {91		return fmt.Errorf("close cgroup: %s", err)92	}93	return nil94}95func (cg *progAttachCgroup) Update(prog *ebpf.Program) error {96	new, err := prog.Clone()97	if err != nil {98		return err99	}100	args := RawAttachProgramOptions{101		Target:  int(cg.cgroup.Fd()),102		Program: prog,103		Attach:  cg.attachType,104		Flags:   uint32(cg.flags),105	}106	if cg.flags&flagAllowMulti > 0 {107		// Atomically replacing multiple programs requires at least108		// 5.5 (commit 7dd68b3279f17921 "bpf: Support replacing cgroup-bpf109		// program in MULTI mode")110		args.Flags |= uint32(flagReplace)...

proc.go

Source:proc.go

...6	"sync"7	"time"8)9// Proc represents a program in execution.10// Do not copy by value. Use proc.Clone() to obtain copies.11// Construct using NewProc().12type Proc struct {13	prog Prog14	in          *bufio.Reader15	out, outErr io.Writer16	rand *rand.Rand17	dir      direction18	pcX, pcY int19	strMode  bool20	stack    stack21	done     bool22	//lint:ignore U1000 ignore unused copy guard23	noCopy sync.Mutex24}25// NewProc creates a new Proc.26// In is the new procs stdin, out stdout, outErr stderr.27func NewProc(prog *Prog, in io.Reader, out, outErr io.Writer) *Proc {28	seed := time.Now().UnixNano()29	if prog.opts.RandSeed != 0 {30		seed = prog.opts.RandSeed31	}32	return &Proc{33		prog: prog.Clone(),34		// #nosec G404 We want to be deterministic here.35		rand: rand.New(rand.NewSource(seed)),36		in:     bufio.NewReader(in),37		out:    out,38		outErr: outErr,39	}40}41// Prog returns a copy of the current Prog inside the proc.42func (p *Proc) Prog() *Prog {43	prog := p.prog.Clone()44	return &prog45}46// Clone returns a pointer to a deep copy of a proc.47// You need to supply new I/O pipes.48func (p *Proc) Clone(in io.Reader, out, outErr io.Writer) *Proc {49	return &Proc{50		prog: p.prog.Clone(),51		in:     bufio.NewReader(in),52		out:    out,53		outErr: outErr,54		dir:     p.dir,55		pcX:     p.pcX,56		pcY:     p.pcY,57		strMode: p.strMode,58		stack:   p.stack.clone(),59		done:    p.done,60	}61}...

Clone

Using AI Code Generation

1import (2type prog struct {3}4func main() {5 p1 := prog{"Go", 1}6 fmt.Println(p1, p2)7}8{Go 1} {Go 2}

Clone

Using AI Code Generation

1import "fmt"2type prog struct {3}4func main() {5p1 := prog{6}7}8import "fmt"9type prog struct {10}11func main() {12p1 := prog{13}14}15import "fmt"16type prog struct {17}18func main() {19p1 := prog{20}21}22import "fmt"23type prog struct {24}25func main() {26p1 := prog{27}28}29import "fmt"30type prog struct {31}32func main() {33p1 := prog{34}35}36import "fmt"37type prog struct {38}39func main() {40p1 := prog{41}42}43import "fmt"

Clone

Using AI Code Generation

1import "fmt"2func main() {3    p2 = p1.Clone()4    fmt.Println(p2.name)5    fmt.Println(p2.age)6}7type prog struct {8}9func (p prog) Clone() prog {10}

Clone

Using AI Code Generation

1import (2func main() {3p1 := prog{a: 10, b: 20}4p2 := p1.clone()5fmt.Println(p1)6fmt.Println(p2)7}8type prog struct {9}10func (p prog) clone() prog {11}12{10 20}13{10 20}14import (15func main() {16p1 := prog{a: 10, b: 20}17p2 := p1.clone()18fmt.Println(p1)19fmt.Println(p2)20}21type prog struct {22}23func (p *prog) clone() prog {24}25{100 200}26{10 20}

Clone

Using AI Code Generation

1import "fmt"2func main(){3    p1 = prog{"Go", 2009}4    p2 = p1.Clone()5    fmt.Println(p2)6}7type prog struct {8}9func (p prog) Clone() prog {10    return prog{p.name, p.year}11}12{Go 2009}

Clone

Using AI Code Generation

1import (2func main() {3	prog1 := &prog{4	}5	prog2 := prog1.Clone()6	fmt.Printf("%# v7", pretty.Formatter(prog1))8	fmt.Printf("%# v9", pretty.Formatter(prog2))10}11type prog struct {12}13func (p *prog) Clone() *prog {14	return &prog{15	}16}17&main.prog{Name:"prog1", Age:10}18&main.prog{Name:"prog1", Age:10}

Clone

Using AI Code Generation

1import "fmt"2type prog struct {3}4func main() {5    p1 := prog{name: "Chrome", version: 4.5}6    p2 := p1.clone()7    fmt.Println(p1, p2)8}9func (p prog) clone() prog {10    return prog{name: p.name, version: p.version}11}12{Chrome 4.5} {Chrome 4.5}13import (14type prog struct {15}16func main() {17    p1 := prog{name: "Chrome", version: 4.5}18    copy(p2, p1)19    fmt.Println(p1, p2)20}21{Chrome 4.5} {Chrome 4.5}22import "fmt"23func main() {24    s1 := []int{1, 2, 3, 4, 5}25    s2 := make([]int, 5)26    copy(s2, s1)27    fmt.Println(s1, s2)28}

Clone

Using AI Code Generation

1import (2func main() {3	p := prog.Prog{}4	fmt.Println("Original Prog:", p)5	p1 := p.Clone()6	fmt.Println("Original Prog:", p)7	fmt.Println("Cloned Prog:", p1)8}9Original Prog: {Go 1.14}10Original Prog: {Go 1.14}11Cloned Prog: {C 1.0}

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