func getxattr(path string, attr string, dest []byte, pos int, options int) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(dest) > 0 {
_p2 = unsafe.Pointer(&dest[0])
} else {
_p2 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), uintptr(pos), uintptr(options))
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
func setxattr(path string, attr string, data []byte, flags int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(data) > 0 {
_p2 = unsafe.Pointer(&data[0])
} else {
_p2 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall.Syscall6(syscall.SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
func (this Lua) LoadBufferX(title string, chank []byte, mode string) error {
if this == 0 {
return errors.New("lua.LoadBufferX: this is null.")
}
title_ptr, title_err := syscall.BytePtrFromString(title)
if title_err != nil {
return title_err
}
mode_ptr, mode_err := syscall.BytePtrFromString(mode)
if mode_err != nil {
return mode_err
}
rc, _, _ := luaL_loadbufferx.Call(
this.State(),
uintptr(unsafe.Pointer(&chank[0])),
uintptr(len(chank)),
uintptr(unsafe.Pointer(title_ptr)),
uintptr(unsafe.Pointer(mode_ptr)))
if rc == 0 {
return nil
} else {
return fmt.Errorf("LUA_ERROR(%d)", rc)
}
}
func add_key(keyType, keyDesc string, payload []byte, id int32) (int32, error) {
var (
err error
errno syscall.Errno
b1, b2 *byte
r1 uintptr
pptr unsafe.Pointer
)
if b1, err = syscall.BytePtrFromString(keyType); err != nil {
return 0, err
}
if b2, err = syscall.BytePtrFromString(keyDesc); err != nil {
return 0, err
}
if len(payload) > 0 {
pptr = unsafe.Pointer(&payload[0])
}
r1, _, errno = syscall.Syscall6(syscall_add_key,
uintptr(unsafe.Pointer(b1)),
uintptr(unsafe.Pointer(b2)),
uintptr(pptr),
uintptr(len(payload)),
uintptr(id),
0)
if errno != 0 {
err = errno
return 0, err
}
return int32(r1), nil
}
// Darwin doesn't have support for syscall.Getxattr() so we pull it into its own file and implement it by hand on Darwin.
func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(dest) > 0 {
_p2 = unsafe.Pointer(&dest[0])
} else {
var _zero uintptr
_p2 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
// Lgetxattr retrieves the value of the extended attribute identified by attr
// and associated with the given path in the file system.
// It will returns a nil slice and nil error if the xattr is not set.
func Lgetxattr(path string, attr string) ([]byte, error) {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return nil, err
}
attrBytes, err := syscall.BytePtrFromString(attr)
if err != nil {
return nil, err
}
dest := make([]byte, 128)
destBytes := unsafe.Pointer(&dest[0])
sz, _, errno := syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
if errno == syscall.ENODATA {
return nil, nil
}
if errno == syscall.ERANGE {
dest = make([]byte, sz)
destBytes := unsafe.Pointer(&dest[0])
sz, _, errno = syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
}
if errno != 0 {
return nil, errno
}
return dest[:sz], nil
}
func getVfsCap(path string, dest *vfscapData) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(dest)), vfscapDataSizeV2, 0, 0)
if e1 != 0 {
err = e1
}
switch dest.magic & vfsCapVerMask {
case vfsCapVer1:
dest.version = 1
if r0 != vfscapDataSizeV1 {
return syscall.EINVAL
}
dest.data[1].permitted = 0
dest.data[1].inheritable = 0
case vfsCapVer2:
dest.version = 2
if r0 != vfscapDataSizeV2 {
return syscall.EINVAL
}
default:
return syscall.EINVAL
}
if dest.magic&vfsCapFlageffective != 0 {
dest.effective[0] = dest.data[0].permitted | dest.data[0].inheritable
dest.effective[1] = dest.data[1].permitted | dest.data[1].inheritable
} else {
dest.effective[0] = 0
dest.effective[1] = 0
}
return
}
func (this Lua) GetGlobal(str string) {
cstr, err := syscall.BytePtrFromString(str)
if err != nil {
panic(err.Error())
}
lua_getglobal.Call(this.State(), uintptr(unsafe.Pointer(cstr)))
}
func (this Lua) GetField(index int, str string) {
cstr, err := syscall.BytePtrFromString(str)
if err != nil {
panic(err.Error())
}
lua_getfield.Call(this.State(), uintptr(index), uintptr(unsafe.Pointer(cstr)))
}
func callPPBGetInterface(g ppbGetInterface, name string) unsafe.Pointer {
p0, err := syscall.BytePtrFromString(name)
if err != nil {
panic(err)
}
return _callPPBGetInterface(g, p0)
}
func setVfsCap(path string, data *vfscapData) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var size uintptr
if data.version == 1 {
data.magic = vfsCapVer1
size = vfscapDataSizeV1
} else if data.version == 2 {
data.magic = vfsCapVer2
if data.effective[0] != 0 || data.effective[1] != 0 {
data.magic |= vfsCapFlageffective
}
size = vfscapDataSizeV2
} else {
return syscall.EINVAL
}
_, _, e1 := syscall.Syscall6(syscall.SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(data)), size, 0, 0)
if e1 != 0 {
err = e1
}
return
}
func (this Lua) PushString(str string) {
cstr, err := syscall.BytePtrFromString(str)
if err != nil {
panic(err.Error())
}
lua_pushstring.Call(this.State(), uintptr(unsafe.Pointer(cstr)))
}
func searchKeyring(id keyId, name, keyType string) (keyId, error) {
var (
r1 int32
b1, b2 *byte
err error
)
if b1, err = syscall.BytePtrFromString(keyType); err != nil {
return 0, err
}
if b2, err = syscall.BytePtrFromString(name); err != nil {
return 0, err
}
r1, _, err = keyctl(keyctlSearch, uintptr(id), uintptr(unsafe.Pointer(b1)), uintptr(unsafe.Pointer(b2)))
return keyId(r1), err
}
func removexattr(path string, attr string, options int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := syscall.Syscall(syscall.SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(options))
if e1 != 0 {
err = e1
}
return
}
func getxattr(path string, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(position), uintptr(options))
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
func lremovexattr(path string, attr string) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := syscall.Syscall(syscall.SYS_LREMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// Returns a []byte slice if the xattr is set and nil otherwise
// Requires path and its attribute as arguments
func Lgetxattr(path string, attr string) ([]byte, error) {
var sz int
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return nil, err
}
attrBytes, err := syscall.BytePtrFromString(attr)
if err != nil {
return nil, err
}
// Start with a 128 length byte array
sz = 128
dest := make([]byte, sz)
destBytes := unsafe.Pointer(&dest[0])
_sz, _, errno := syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
switch {
case errno == syscall.ENODATA:
return nil, errno
case errno == syscall.ENOTSUP:
return nil, errno
case errno == syscall.ERANGE:
// 128 byte array might just not be good enough,
// A dummy buffer is used ``uintptr(0)`` to get real size
// of the xattrs on disk
_sz, _, errno = syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(unsafe.Pointer(nil)), uintptr(0), 0, 0)
sz = int(_sz)
if sz < 0 {
return nil, errno
}
dest = make([]byte, sz)
destBytes := unsafe.Pointer(&dest[0])
_sz, _, errno = syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
if errno != 0 {
return nil, errno
}
case errno != 0:
return nil, errno
}
sz = int(_sz)
return dest[:sz], nil
}
func BenchmarkSyscallBaseline(b *testing.B) {
initAdds()
var r uintptr
for i := 0; i < b.N; i++ {
t, _ := syscall.BytePtrFromString("LoadLibraryA")
r, _, _ = a.Call(h, (uintptr)(unsafe.Pointer(t)))
}
if r != control {
b.Fail()
}
}
func TestCDecl(t *testing.T) {
var buf [50]byte
fmtp, _ := syscall.BytePtrFromString("%d %d %d")
a, _, _ := GetDLL(t, "user32.dll").Proc("wsprintfA").Call(
uintptr(unsafe.Pointer(&buf[0])),
uintptr(unsafe.Pointer(fmtp)),
1000, 2000, 3000)
if string(buf[:a]) != "1000 2000 3000" {
t.Error("cdecl USER32.wsprintfA returns", a, "buf=", buf[:a])
}
}
func Set(name string, value string) error {
var (
bptrname *byte
bptrvalue *byte
err error
)
if bptrname, err = syscall.BytePtrFromString(name); err != nil {
return err
}
if bptrvalue, err = syscall.BytePtrFromString(value); err != nil {
return err
}
if _, err = kenv_sys(SET, unsafe.Pointer(bptrname), unsafe.Pointer(bptrvalue), len(value)+1); err != nil {
return err
}
return nil
}
// Lsetxattr sets the value of the extended attribute identified by attr
// and associated with the given path in the file system.
func Lsetxattr(path string, attr string, data []byte, flags int) error {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
attrBytes, err := syscall.BytePtrFromString(attr)
if err != nil {
return err
}
var dataBytes unsafe.Pointer
if len(data) > 0 {
dataBytes = unsafe.Pointer(&data[0])
} else {
dataBytes = unsafe.Pointer(&_zero)
}
_, _, errno := syscall.Syscall6(syscall.SYS_LSETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(dataBytes), uintptr(len(data)), uintptr(flags), 0)
if errno != 0 {
return errno
}
return nil
}
func (libcConn) writeString(p Priority, hostname, tag, msg, nl string) error {
timestamp := time.Now().Format(time.RFC3339)
log := fmt.Sprintf("%s %s %s[%d]: %s%s", timestamp, hostname, tag, os.Getpid(), msg, nl)
buf, err := syscall.BytePtrFromString(log)
if err != nil {
return err
}
syscall.Entersyscall()
syslog_c(int(p), buf)
syscall.Exitsyscall()
return nil
}
func utimensat(dirfd int, path string, times *[2]syscall.Timespec, flags int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
_, _, e1 := syscall.Syscall6(syscall.SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
if e1 != 0 {
err = e1
}
return
}
func Unlink(regionName string) error {
name, err := syscall.BytePtrFromString(regionName)
if err != nil {
return err
}
if _, _, errno := syscall.Syscall(syscall.SYS_SHM_UNLINK,
uintptr(unsafe.Pointer(name)), 0, 0,
); errno != 0 {
return errno
}
return nil
}
func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
_, _, e1 := syscall.Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
use(unsafe.Pointer(_p0))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// LUtimesNano is used to change access and modification time of the specified path.
// It's used for symbol link file because syscall.UtimesNano doesn't support a NOFOLLOW flag atm.
func LUtimesNano(path string, ts []syscall.Timespec) error {
var _path *byte
_path, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
if _, _, err := syscall.Syscall(syscall.SYS_LUTIMES, uintptr(unsafe.Pointer(_path)), uintptr(unsafe.Pointer(&ts[0])), 0); err != 0 && err != syscall.ENOSYS {
return err
}
return nil
}
func Open(regionName string, flags int, perm os.FileMode) (*os.File, error) {
name, err := syscall.BytePtrFromString(regionName)
if err != nil {
return nil, err
}
fd, _, errno := syscall.Syscall(syscall.SYS_SHM_OPEN,
uintptr(unsafe.Pointer(name)),
uintptr(flags), uintptr(perm),
)
if errno != 0 {
return nil, errno
}
return os.NewFile(fd, regionName), nil
}
func (L Lua) LoadFile(path string, mode string) (int, error) {
fd, err := os.OpenFile(path, os.O_RDONLY, 0666)
if err != nil {
return 0, err
}
defer fd.Close()
path_ptr, path_err := syscall.BytePtrFromString(path)
if path_err != nil {
return 0, err
}
mode_ptr, mode_err := syscall.BytePtrFromString(mode)
if mode_err != nil {
return 0, err
}
callback := syscall.NewCallbackCDecl(callback_reader)
load_buffer_mutex.Lock()
defer load_buffer_mutex.Unlock()
rc, _, _ := lua_load.Call(
L.State(),
callback,
uintptr(unsafe.Pointer(fd)),
uintptr(unsafe.Pointer(path_ptr)),
uintptr(unsafe.Pointer(mode_ptr)))
if rc == LUA_OK {
return 0, nil
} else if rc == LUA_ERRSYNTAX {
return LUA_ERRSYNTAX, errors.New("lua_load: LUA_ERRSYNTAX")
} else if rc == LUA_ERRMEM {
return LUA_ERRMEM, errors.New("lua_load: LUA_ERRMEM")
} else if rc == LUA_ERRGCMM {
return LUA_ERRGCMM, errors.New("lua_load: LUA_ERRGCMM")
} else {
return int(rc), fmt.Errorf("lua_load: returns %d", rc)
}
}
func getVfsStats(path string) (total uint64, free uint64, err error) {
_p0, err := syscall.BytePtrFromString(path)
if err != nil {
return 0, 0, err
}
res, err := C.getBytesFree((*C.char)(unsafe.Pointer(_p0)), (*_Ctype_ulonglong)(unsafe.Pointer(&free)))
if res != 0 {
return 0, 0, err
}
res, err = C.getBytesTotal((*C.char)(unsafe.Pointer(_p0)), (*_Ctype_ulonglong)(unsafe.Pointer(&total)))
if res != 0 {
return 0, 0, err
}
return total, free, nil
}
// Delete the actual bridge device.
func DeleteBridge(name string) error {
s, err := getIfSocket()
if err != nil {
return err
}
defer syscall.Close(s)
nameBytePtr, err := syscall.BytePtrFromString(name)
if err != nil {
return err
}
var ifr ifreqFlags
copy(ifr.IfrnName[:len(ifr.IfrnName)-1], []byte(name))
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, uintptr(s),
syscall.SIOCSIFFLAGS, uintptr(unsafe.Pointer(&ifr))); err != 0 {
return err
}
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, uintptr(s),
SIOC_BRDELBR, uintptr(unsafe.Pointer(nameBytePtr))); err != 0 {
return err
}
return nil
}
