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How to use AllocateVMA method of prog Package

Best Syzkaller code snippet using prog.AllocateVMA

target.go

Source:target.go

...262}263func (pg *Builder) Allocate(size uint64) uint64 {264	return pg.ma.alloc(nil, size)265}266func (pg *Builder) AllocateVMA(npages uint64) uint64 {267	psize := pg.target.PageSize268	addr := pg.ma.alloc(nil, (npages+1)*psize)269	return (addr + psize - 1) & ^(psize - 1)270}271func (pg *Builder) Finalize() (*Prog, error) {272	if err := pg.p.validate(); err != nil {273		return nil, err274	}275	if _, err := pg.p.SerializeForExec(make([]byte, ExecBufferSize)); err != nil {276		return nil, err277	}278	p := pg.p279	pg.p = nil280	return p, nil...

AllocateVMA

Using AI Code Generation

1prog := new(Prog)2prog.AllocateVMA()3func main() {4 prog := new(Prog)5 prog.AllocateVMA()6}

AllocateVMA

Using AI Code Generation

1import (2func main() {3	mapFd, err := syscall.Bpf(syscall.BPF_MAP_CREATE, unsafe.Pointer(&mapAttr), uint32(unsafe.Sizeof(mapAttr)))4	if err != nil {5		fmt.Println("Error creating map: ", err)6	}7	fmt.Println("Map created with fd: ", mapFd)8	progFd, err = syscall.Bpf(syscall.BPF_PROG_LOAD, unsafe.Pointer(&progAttr), uint32(unsafe.Sizeof(progAttr)))9	if err != nil {10		fmt.Println("Error creating program: ", err)11	}12	fmt.Println("Program created with fd: ", progFd)13	err = syscall.Bpf(syscall.BPF_MAP_PROG_ATTACH, unsafe.Pointer(&mapProgAttr), uint32(unsafe.Sizeof(mapProgAttr)))14	if err != nil {15		fmt.Println("Error attaching program to map: ", err)16	}17	fmt.Println("Program attached to map")18	vmaFd, err = syscall.Bpf(syscall.BPF_MAP_PROG_ATTACH, unsafe.Pointer(&vmaAttr), uint32(unsafe.Sizeof(vmaAttr)))19	if err != nil {20		fmt.Println("Error allocating VMA: ", err)21	}22	fmt.Println("VMA allocated with fd: ", vmaFd)23}

AllocateVMA

Using AI Code Generation

1func AllocateVMA(prog *ebpf.Program, size int) (uintptr, error) {2    var (3        mapFD  = C.int(prog.FD())4        length = C.int(size)5    ret = C.allocate_vma(mapFD, length)6    if ret < 0 {7        return 0, fmt.Errorf("error allocating vma: %v", ret)8    }9    return uintptr(ret), nil10}11func FreeVMA(prog *ebpf.Program, vma uintptr) error {12    var (13        mapFD  = C.int(prog.FD())14        addr   = C.ulong(vma)15    ret = C.free_vma(mapFD, addr)16    if ret < 0 {17        return fmt.Errorf("error freeing vma: %v", ret)18    }19}20func ReadVMA(prog *ebpf.Program, vma uintptr, size int) ([]byte, error) {21    var (22        mapFD  = C.int(prog.FD())23        addr   = C.ulong(vma)24        length = C.int(size)25    buf := make([]byte, size)26    ret = C.read_vma(mapFD, addr, length, unsafe.Pointer(&buf[0]))27    if ret < 0 {28        return nil, fmt.Errorf("error reading vma: %v", ret)29    }30}31func WriteVMA(prog *ebpf.Program, vma uintptr, data []byte) error {32    var (33        mapFD  = C.int(prog.FD())34        addr   = C.ulong(vma)35        length = C.int(len(data))36    ret = C.write_vma(mapFD, addr, length, unsafe.Pointer(&data[0]))37    if ret < 0 {38        return fmt.Errorf("error writing vma: %v", ret)39    }40}

AllocateVMA

Using AI Code Generation

1vma, err := prog.AllocateVMA(0, 0)2if err != nil {3    fmt.Printf("error while allocating vma %v4}5defer vma.Close()6err = prog.MapVMA(vma, 0, 0, 0)7if err != nil {8    fmt.Printf("error while mapping vma %v9}10err = prog.MapVMA(0, 0, 0, 0)11if err != nil {12    fmt.Printf("error while mapping vma %v13}14err = prog.MapVMA(0, 0, 0, 0)15if err != nil {16    fmt.Printf("error while mapping vma %v17}18err = prog.MapVMA(0, 0, 0, 0)19if err != nil {20    fmt.Printf("error while mapping vma %v21}22err = prog.MapVMA(0, 0, 0, 0)23if err != nil {24    fmt.Printf("error while mapping vma %v25}26err = prog.MapVMA(0, 0, 0, 0)27if err != nil {28    fmt.Printf("error while mapping vma %v29}30err = prog.MapVMA(0, 0, 0, 0)31if err != nil {32    fmt.Printf("error while mapping vma %v33}34err = prog.MapVMA(0, 0, 0, 0)35if err != nil {36    fmt.Printf("error while mapping vma %v

AllocateVMA

Using AI Code Generation

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AllocateVMA

Using AI Code Generation

1func main() {2}3func main() {4}5func main() {6}7func main() {8}9func main() {10}11func main() {12}13func main() {14}15func main() {16}

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