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How to use Allocate method of prog Package

Best Syzkaller code snippet using prog.Allocate

bpf.go

Source:bpf.go

...7	"github.com/cilium/cilium/pkg/logging/logfields"8)9var (10	log = logging.DefaultLogger.WithField(logfields.LogSubsys, "bpf")11	preAllocateMapSetting uint32 = BPF_F_NO_PREALLOC12)13const (14	// BPF syscall command constants. Must match enum bpf_cmd from linux/bpf.h15	BPF_MAP_CREATE          = 016	BPF_MAP_LOOKUP_ELEM     = 117	BPF_MAP_UPDATE_ELEM     = 218	BPF_MAP_DELETE_ELEM     = 319	BPF_MAP_GET_NEXT_KEY    = 420	BPF_PROG_LOAD           = 521	BPF_OBJ_PIN             = 622	BPF_OBJ_GET             = 723	BPF_PROG_ATTACH         = 824	BPF_PROG_DETACH         = 925	BPF_PROG_TEST_RUN       = 1026	BPF_PROG_GET_NEXT_ID    = 1127	BPF_MAP_GET_NEXT_ID     = 1228	BPF_PROG_GET_FD_BY_ID   = 1329	BPF_MAP_GET_FD_BY_ID    = 1430	BPF_OBJ_GET_INFO_BY_FD  = 1531	BPF_PROG_QUERY          = 1632	BPF_RAW_TRACEPOINT_OPEN = 1733	BPF_BTF_LOAD            = 1834	BPF_BTF_GET_FD_BY_ID    = 1935	BPF_TASK_FD_QUERY       = 2036	// BPF syscall attach types37	BPF_CGROUP_INET_INGRESS      = 038	BPF_CGROUP_INET_EGRESS       = 139	BPF_CGROUP_INET_SOCK_CREATE  = 240	BPF_CGROUP_SOCK_OPS          = 341	BPF_SK_SKB_STREAM_PARSER     = 442	BPF_SK_SKB_STREAM_VERDICT    = 543	BPF_CGROUP_DEVICE            = 644	BPF_SK_MSG_VERDICT           = 745	BPF_CGROUP_INET4_BIND        = 846	BPF_CGROUP_INET6_BIND        = 947	BPF_CGROUP_INET4_CONNECT     = 1048	BPF_CGROUP_INET6_CONNECT     = 1149	BPF_CGROUP_INET4_POST_BIND   = 1250	BPF_CGROUP_INET6_POST_BIND   = 1351	BPF_CGROUP_UDP4_SENDMSG      = 1452	BPF_CGROUP_UDP6_SENDMSG      = 1553	BPF_LIRC_MODE2               = 1654	BPF_FLOW_DISSECTOR           = 1755	BPF_CGROUP_SYSCTL            = 1856	BPF_CGROUP_UDP4_RECVMSG      = 1957	BPF_CGROUP_UDP6_RECVMSG      = 2058	BPF_CGROUP_INET4_GETPEERNAME = 2959	BPF_CGROUP_INET6_GETPEERNAME = 3060	BPF_CGROUP_INET4_GETSOCKNAME = 3161	BPF_CGROUP_INET6_GETSOCKNAME = 3262	// Flags for BPF_MAP_UPDATE_ELEM. Must match values from linux/bpf.h63	BPF_ANY     = 064	BPF_NOEXIST = 165	BPF_EXIST   = 266	// Flags for BPF_MAP_CREATE. Must match values from linux/bpf.h67	BPF_F_NO_PREALLOC   = 1 << 068	BPF_F_NO_COMMON_LRU = 1 << 169	BPF_F_NUMA_NODE     = 1 << 270	// Flags for BPF_PROG_QUERY71	BPF_F_QUERY_EFFECTVE = 1 << 072	// Flags for accessing BPF object73	BPF_F_RDONLY = 1 << 374	BPF_F_WRONLY = 1 << 475	// Flag for stack_map, store build_id+offset instead of pointer76	BPF_F_STACK_BUILD_ID = 1 << 577)78// EnableMapPreAllocation enables BPF map pre-allocation on map types that79// support it. This does not take effect on existing map although some map80// types could be recreated later when objCheck() runs.81func EnableMapPreAllocation() {82	atomic.StoreUint32(&preAllocateMapSetting, 0)83}84// DisableMapPreAllocation disables BPF map pre-allocation as a default85// setting. Some map types enforces pre-alloc strategy so this does not86// take effect in that case. Also note that this does not take effect on87// existing map although could be recreated later when objCheck() runs.88func DisableMapPreAllocation() {89	atomic.StoreUint32(&preAllocateMapSetting, 1)90}91// GetPreAllocateMapFlags returns the map flags for map which use conditional92// pre-allocation.93func GetPreAllocateMapFlags(t MapType) uint32 {94	switch {95	case !t.allowsPreallocation():96		return BPF_F_NO_PREALLOC97	case t.requiresPreallocation():98		return 099	}100	return atomic.LoadUint32(&preAllocateMapSetting)101}...

Allocate

Using AI Code Generation

1func main() {2    p := new(prog)3    p.Allocate(100)4    fmt.Println(p.i)5}6type prog struct {7}8func (p *prog) Allocate(i int) {9}

Allocate

Using AI Code Generation

1import (2func main() {3    p.Allocate()4    fmt.Println(p)5}6import (7type Prog struct {8}9func (p *Prog) Allocate() {10    p.dob = time.Now()11}12func (p Prog) String() string {13    return fmt.Sprintf("Name: %s, Age: %d, DOB: %v", p.name, p.age, p.dob)14}

Allocate

Using AI Code Generation

1import "fmt"2func main() {3	fmt.Println("Welcome to Go")4	p.Allocate(100)5	fmt.Println("Value of a is", p.a)6}7type prog struct {8}9func (p *prog) Allocate(i int) {10}

Allocate

Using AI Code Generation

1import (2func main() {3	p.Allocate(100)4	p.Run()5}6import (7type prog struct {8}9func (p *prog) Allocate(size int) {10	p.mem = make([]int, size)11}12func (p *prog) Run() {13	fmt.Println("Running program")14}

Allocate

Using AI Code Generation

1import (2func main() {3	slice := make([]int, 10)4	for i := 0; i < 10; i++ {5	}6	fmt.Println(slice)7	fmt.Println(unsafe.Sizeof(slice))8}

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