Bump dependency opencontainers/runc@v1.0.0-rc10
This commit is contained in:
Odin Ugedal
394
vendor/github.com/cilium/ebpf/syscalls.go
generated
vendored
Normal file
394
vendor/github.com/cilium/ebpf/syscalls.go
generated
vendored
Normal file
@@ -0,0 +1,394 @@
|
||||
package ebpf
|
||||
|
||||
import (
|
||||
"path/filepath"
|
||||
"strings"
|
||||
"unsafe"
|
||||
|
||||
"github.com/cilium/ebpf/internal"
|
||||
"github.com/cilium/ebpf/internal/btf"
|
||||
"github.com/cilium/ebpf/internal/unix"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// bpfObjName is a null-terminated string made up of
|
||||
// 'A-Za-z0-9_' characters.
|
||||
type bpfObjName [unix.BPF_OBJ_NAME_LEN]byte
|
||||
|
||||
// newBPFObjName truncates the result if it is too long.
|
||||
func newBPFObjName(name string) (bpfObjName, error) {
|
||||
idx := strings.IndexFunc(name, invalidBPFObjNameChar)
|
||||
if idx != -1 {
|
||||
return bpfObjName{}, errors.Errorf("invalid character '%c' in name '%s'", name[idx], name)
|
||||
}
|
||||
|
||||
var result bpfObjName
|
||||
copy(result[:unix.BPF_OBJ_NAME_LEN-1], name)
|
||||
return result, nil
|
||||
}
|
||||
|
||||
func invalidBPFObjNameChar(char rune) bool {
|
||||
switch {
|
||||
case char >= 'A' && char <= 'Z':
|
||||
fallthrough
|
||||
case char >= 'a' && char <= 'z':
|
||||
fallthrough
|
||||
case char >= '0' && char <= '9':
|
||||
fallthrough
|
||||
case char == '_':
|
||||
return false
|
||||
default:
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
type bpfMapCreateAttr struct {
|
||||
mapType MapType
|
||||
keySize uint32
|
||||
valueSize uint32
|
||||
maxEntries uint32
|
||||
flags uint32
|
||||
innerMapFd uint32 // since 4.12 56f668dfe00d
|
||||
numaNode uint32 // since 4.14 96eabe7a40aa
|
||||
mapName bpfObjName // since 4.15 ad5b177bd73f
|
||||
mapIfIndex uint32
|
||||
btfFd uint32
|
||||
btfKeyTypeID btf.TypeID
|
||||
btfValueTypeID btf.TypeID
|
||||
}
|
||||
|
||||
type bpfMapOpAttr struct {
|
||||
mapFd uint32
|
||||
padding uint32
|
||||
key internal.Pointer
|
||||
value internal.Pointer
|
||||
flags uint64
|
||||
}
|
||||
|
||||
type bpfMapInfo struct {
|
||||
mapType uint32
|
||||
id uint32
|
||||
keySize uint32
|
||||
valueSize uint32
|
||||
maxEntries uint32
|
||||
flags uint32
|
||||
mapName bpfObjName // since 4.15 ad5b177bd73f
|
||||
}
|
||||
|
||||
type bpfPinObjAttr struct {
|
||||
fileName internal.Pointer
|
||||
fd uint32
|
||||
padding uint32
|
||||
}
|
||||
|
||||
type bpfProgLoadAttr struct {
|
||||
progType ProgramType
|
||||
insCount uint32
|
||||
instructions internal.Pointer
|
||||
license internal.Pointer
|
||||
logLevel uint32
|
||||
logSize uint32
|
||||
logBuf internal.Pointer
|
||||
kernelVersion uint32 // since 4.1 2541517c32be
|
||||
progFlags uint32 // since 4.11 e07b98d9bffe
|
||||
progName bpfObjName // since 4.15 067cae47771c
|
||||
progIfIndex uint32 // since 4.15 1f6f4cb7ba21
|
||||
expectedAttachType AttachType // since 4.17 5e43f899b03a
|
||||
progBTFFd uint32
|
||||
funcInfoRecSize uint32
|
||||
funcInfo internal.Pointer
|
||||
funcInfoCnt uint32
|
||||
lineInfoRecSize uint32
|
||||
lineInfo internal.Pointer
|
||||
lineInfoCnt uint32
|
||||
}
|
||||
|
||||
type bpfProgInfo struct {
|
||||
progType uint32
|
||||
id uint32
|
||||
tag [unix.BPF_TAG_SIZE]byte
|
||||
jitedLen uint32
|
||||
xlatedLen uint32
|
||||
jited internal.Pointer
|
||||
xlated internal.Pointer
|
||||
loadTime uint64 // since 4.15 cb4d2b3f03d8
|
||||
createdByUID uint32
|
||||
nrMapIDs uint32
|
||||
mapIds internal.Pointer
|
||||
name bpfObjName
|
||||
}
|
||||
|
||||
type bpfProgTestRunAttr struct {
|
||||
fd uint32
|
||||
retval uint32
|
||||
dataSizeIn uint32
|
||||
dataSizeOut uint32
|
||||
dataIn internal.Pointer
|
||||
dataOut internal.Pointer
|
||||
repeat uint32
|
||||
duration uint32
|
||||
}
|
||||
|
||||
type bpfProgAlterAttr struct {
|
||||
targetFd uint32
|
||||
attachBpfFd uint32
|
||||
attachType uint32
|
||||
attachFlags uint32
|
||||
}
|
||||
|
||||
type bpfObjGetInfoByFDAttr struct {
|
||||
fd uint32
|
||||
infoLen uint32
|
||||
info internal.Pointer // May be either bpfMapInfo or bpfProgInfo
|
||||
}
|
||||
|
||||
type bpfGetFDByIDAttr struct {
|
||||
id uint32
|
||||
next uint32
|
||||
}
|
||||
|
||||
func bpfProgLoad(attr *bpfProgLoadAttr) (*internal.FD, error) {
|
||||
for {
|
||||
fd, err := internal.BPF(_ProgLoad, unsafe.Pointer(attr), unsafe.Sizeof(*attr))
|
||||
// As of ~4.20 the verifier can be interrupted by a signal,
|
||||
// and returns EAGAIN in that case.
|
||||
if err == unix.EAGAIN {
|
||||
continue
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return internal.NewFD(uint32(fd)), nil
|
||||
}
|
||||
}
|
||||
|
||||
func bpfProgAlter(cmd int, attr *bpfProgAlterAttr) error {
|
||||
_, err := internal.BPF(cmd, unsafe.Pointer(attr), unsafe.Sizeof(*attr))
|
||||
return err
|
||||
}
|
||||
|
||||
func bpfMapCreate(attr *bpfMapCreateAttr) (*internal.FD, error) {
|
||||
fd, err := internal.BPF(_MapCreate, unsafe.Pointer(attr), unsafe.Sizeof(*attr))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return internal.NewFD(uint32(fd)), nil
|
||||
}
|
||||
|
||||
var haveNestedMaps = internal.FeatureTest("nested maps", "4.12", func() bool {
|
||||
inner, err := bpfMapCreate(&bpfMapCreateAttr{
|
||||
mapType: Array,
|
||||
keySize: 4,
|
||||
valueSize: 4,
|
||||
maxEntries: 1,
|
||||
})
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
defer inner.Close()
|
||||
|
||||
innerFd, _ := inner.Value()
|
||||
nested, err := bpfMapCreate(&bpfMapCreateAttr{
|
||||
mapType: ArrayOfMaps,
|
||||
keySize: 4,
|
||||
valueSize: 4,
|
||||
maxEntries: 1,
|
||||
innerMapFd: innerFd,
|
||||
})
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
_ = nested.Close()
|
||||
return true
|
||||
})
|
||||
|
||||
func bpfMapLookupElem(m *internal.FD, key, valueOut internal.Pointer) error {
|
||||
fd, err := m.Value()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
attr := bpfMapOpAttr{
|
||||
mapFd: fd,
|
||||
key: key,
|
||||
value: valueOut,
|
||||
}
|
||||
_, err = internal.BPF(_MapLookupElem, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
return err
|
||||
}
|
||||
|
||||
func bpfMapLookupAndDelete(m *internal.FD, key, valueOut internal.Pointer) error {
|
||||
fd, err := m.Value()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
attr := bpfMapOpAttr{
|
||||
mapFd: fd,
|
||||
key: key,
|
||||
value: valueOut,
|
||||
}
|
||||
_, err = internal.BPF(_MapLookupAndDeleteElem, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
return err
|
||||
}
|
||||
|
||||
func bpfMapUpdateElem(m *internal.FD, key, valueOut internal.Pointer, flags uint64) error {
|
||||
fd, err := m.Value()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
attr := bpfMapOpAttr{
|
||||
mapFd: fd,
|
||||
key: key,
|
||||
value: valueOut,
|
||||
flags: flags,
|
||||
}
|
||||
_, err = internal.BPF(_MapUpdateElem, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
return err
|
||||
}
|
||||
|
||||
func bpfMapDeleteElem(m *internal.FD, key internal.Pointer) error {
|
||||
fd, err := m.Value()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
attr := bpfMapOpAttr{
|
||||
mapFd: fd,
|
||||
key: key,
|
||||
}
|
||||
_, err = internal.BPF(_MapDeleteElem, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
return err
|
||||
}
|
||||
|
||||
func bpfMapGetNextKey(m *internal.FD, key, nextKeyOut internal.Pointer) error {
|
||||
fd, err := m.Value()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
attr := bpfMapOpAttr{
|
||||
mapFd: fd,
|
||||
key: key,
|
||||
value: nextKeyOut,
|
||||
}
|
||||
_, err = internal.BPF(_MapGetNextKey, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
return err
|
||||
}
|
||||
|
||||
const bpfFSType = 0xcafe4a11
|
||||
|
||||
func bpfPinObject(fileName string, fd *internal.FD) error {
|
||||
dirName := filepath.Dir(fileName)
|
||||
var statfs unix.Statfs_t
|
||||
if err := unix.Statfs(dirName, &statfs); err != nil {
|
||||
return err
|
||||
}
|
||||
if uint64(statfs.Type) != bpfFSType {
|
||||
return errors.Errorf("%s is not on a bpf filesystem", fileName)
|
||||
}
|
||||
|
||||
value, err := fd.Value()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
_, err = internal.BPF(_ObjPin, unsafe.Pointer(&bpfPinObjAttr{
|
||||
fileName: internal.NewStringPointer(fileName),
|
||||
fd: value,
|
||||
}), 16)
|
||||
return errors.Wrapf(err, "pin object %s", fileName)
|
||||
}
|
||||
|
||||
func bpfGetObject(fileName string) (*internal.FD, error) {
|
||||
ptr, err := internal.BPF(_ObjGet, unsafe.Pointer(&bpfPinObjAttr{
|
||||
fileName: internal.NewStringPointer(fileName),
|
||||
}), 16)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "get object %s", fileName)
|
||||
}
|
||||
return internal.NewFD(uint32(ptr)), nil
|
||||
}
|
||||
|
||||
func bpfGetObjectInfoByFD(fd *internal.FD, info unsafe.Pointer, size uintptr) error {
|
||||
value, err := fd.Value()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// available from 4.13
|
||||
attr := bpfObjGetInfoByFDAttr{
|
||||
fd: value,
|
||||
infoLen: uint32(size),
|
||||
info: internal.NewPointer(info),
|
||||
}
|
||||
_, err = internal.BPF(_ObjGetInfoByFD, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
return errors.Wrapf(err, "fd %d", fd)
|
||||
}
|
||||
|
||||
func bpfGetProgInfoByFD(fd *internal.FD) (*bpfProgInfo, error) {
|
||||
var info bpfProgInfo
|
||||
err := bpfGetObjectInfoByFD(fd, unsafe.Pointer(&info), unsafe.Sizeof(info))
|
||||
return &info, errors.Wrap(err, "can't get program info")
|
||||
}
|
||||
|
||||
func bpfGetMapInfoByFD(fd *internal.FD) (*bpfMapInfo, error) {
|
||||
var info bpfMapInfo
|
||||
err := bpfGetObjectInfoByFD(fd, unsafe.Pointer(&info), unsafe.Sizeof(info))
|
||||
return &info, errors.Wrap(err, "can't get map info")
|
||||
}
|
||||
|
||||
var haveObjName = internal.FeatureTest("object names", "4.15", func() bool {
|
||||
name, err := newBPFObjName("feature_test")
|
||||
if err != nil {
|
||||
// This really is a fatal error, but it should be caught
|
||||
// by the unit tests not working.
|
||||
return false
|
||||
}
|
||||
|
||||
attr := bpfMapCreateAttr{
|
||||
mapType: Array,
|
||||
keySize: 4,
|
||||
valueSize: 4,
|
||||
maxEntries: 1,
|
||||
mapName: name,
|
||||
}
|
||||
|
||||
fd, err := bpfMapCreate(&attr)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
_ = fd.Close()
|
||||
return true
|
||||
})
|
||||
|
||||
func bpfGetMapFDByID(id uint32) (*internal.FD, error) {
|
||||
// available from 4.13
|
||||
attr := bpfGetFDByIDAttr{
|
||||
id: id,
|
||||
}
|
||||
ptr, err := internal.BPF(_MapGetFDByID, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "can't get fd for map id %d", id)
|
||||
}
|
||||
return internal.NewFD(uint32(ptr)), nil
|
||||
}
|
||||
|
||||
func bpfGetProgramFDByID(id uint32) (*internal.FD, error) {
|
||||
// available from 4.13
|
||||
attr := bpfGetFDByIDAttr{
|
||||
id: id,
|
||||
}
|
||||
ptr, err := internal.BPF(_ProgGetFDByID, unsafe.Pointer(&attr), unsafe.Sizeof(attr))
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "can't get fd for program id %d", id)
|
||||
}
|
||||
return internal.NewFD(uint32(ptr)), nil
|
||||
}
|
||||
Reference in New Issue
Block a user