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|
// Automatically generated marshal implementation. See tools/go_marshal.
// +build amd64
package linux
import (
"gvisor.dev/gvisor/pkg/safecopy"
"gvisor.dev/gvisor/pkg/usermem"
"gvisor.dev/gvisor/tools/go_marshal/marshal"
"io"
"reflect"
"runtime"
"unsafe"
)
// Marshallable types used by this file.
var _ marshal.Marshallable = (*Stat)(nil)
var _ marshal.Marshallable = (*Timespec)(nil)
// SizeBytes implements marshal.Marshallable.SizeBytes.
func (s *Stat) SizeBytes() int {
return 96 +
(*Timespec)(nil).SizeBytes() +
(*Timespec)(nil).SizeBytes() +
(*Timespec)(nil).SizeBytes()
}
// MarshalBytes implements marshal.Marshallable.MarshalBytes.
func (s *Stat) MarshalBytes(dst []byte) {
usermem.ByteOrder.PutUint64(dst[:8], uint64(s.Dev))
dst = dst[8:]
usermem.ByteOrder.PutUint64(dst[:8], uint64(s.Ino))
dst = dst[8:]
usermem.ByteOrder.PutUint64(dst[:8], uint64(s.Nlink))
dst = dst[8:]
usermem.ByteOrder.PutUint32(dst[:4], uint32(s.Mode))
dst = dst[4:]
usermem.ByteOrder.PutUint32(dst[:4], uint32(s.UID))
dst = dst[4:]
usermem.ByteOrder.PutUint32(dst[:4], uint32(s.GID))
dst = dst[4:]
// Padding: dst[:sizeof(int32)] ~= int32(0)
dst = dst[4:]
usermem.ByteOrder.PutUint64(dst[:8], uint64(s.Rdev))
dst = dst[8:]
usermem.ByteOrder.PutUint64(dst[:8], uint64(s.Size))
dst = dst[8:]
usermem.ByteOrder.PutUint64(dst[:8], uint64(s.Blksize))
dst = dst[8:]
usermem.ByteOrder.PutUint64(dst[:8], uint64(s.Blocks))
dst = dst[8:]
s.ATime.MarshalBytes(dst[:s.ATime.SizeBytes()])
dst = dst[s.ATime.SizeBytes():]
s.MTime.MarshalBytes(dst[:s.MTime.SizeBytes()])
dst = dst[s.MTime.SizeBytes():]
s.CTime.MarshalBytes(dst[:s.CTime.SizeBytes()])
dst = dst[s.CTime.SizeBytes():]
// Padding: dst[:sizeof(int64)*3] ~= [3]int64{0}
dst = dst[24:]
}
// UnmarshalBytes implements marshal.Marshallable.UnmarshalBytes.
func (s *Stat) UnmarshalBytes(src []byte) {
s.Dev = usermem.ByteOrder.Uint64(src[:8])
src = src[8:]
s.Ino = usermem.ByteOrder.Uint64(src[:8])
src = src[8:]
s.Nlink = usermem.ByteOrder.Uint64(src[:8])
src = src[8:]
s.Mode = usermem.ByteOrder.Uint32(src[:4])
src = src[4:]
s.UID = usermem.ByteOrder.Uint32(src[:4])
src = src[4:]
s.GID = usermem.ByteOrder.Uint32(src[:4])
src = src[4:]
// Padding: var _ int32 ~= src[:sizeof(int32)]
src = src[4:]
s.Rdev = usermem.ByteOrder.Uint64(src[:8])
src = src[8:]
s.Size = int64(usermem.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.Blksize = int64(usermem.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.Blocks = int64(usermem.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.ATime.UnmarshalBytes(src[:s.ATime.SizeBytes()])
src = src[s.ATime.SizeBytes():]
s.MTime.UnmarshalBytes(src[:s.MTime.SizeBytes()])
src = src[s.MTime.SizeBytes():]
s.CTime.UnmarshalBytes(src[:s.CTime.SizeBytes()])
src = src[s.CTime.SizeBytes():]
// Padding: ~ copy([3]int64(s._), src[:sizeof(int64)*3])
src = src[24:]
}
// Packed implements marshal.Marshallable.Packed.
func (s *Stat) Packed() bool {
return s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed()
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
func (s *Stat) MarshalUnsafe(dst []byte) {
if s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() {
safecopy.CopyIn(dst, unsafe.Pointer(s))
} else {
s.MarshalBytes(dst)
}
}
// UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
func (s *Stat) UnmarshalUnsafe(src []byte) {
if s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
safecopy.CopyOut(unsafe.Pointer(s), src)
} else {
s.UnmarshalBytes(src)
}
}
// CopyOut implements marshal.Marshallable.CopyOut.
func (s *Stat) CopyOut(task marshal.Task, addr usermem.Addr) (int, error) {
if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := task.CopyScratchBuffer(s.SizeBytes())
s.MarshalBytes(buf)
return task.CopyOutBytes(addr, buf)
}
// Bypass escape analysis on s. The no-op arithmetic operation on the
// pointer makes the compiler think val doesn't depend on s.
// See src/runtime/stubs.go:noescape() in the golang toolchain.
ptr := unsafe.Pointer(s)
val := uintptr(ptr)
val = val^0
// Construct a slice backed by s's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = val
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
len, err := task.CopyOutBytes(addr, buf)
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until after the CopyOutBytes.
runtime.KeepAlive(s)
return len, err
}
// CopyIn implements marshal.Marshallable.CopyIn.
func (s *Stat) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := task.CopyScratchBuffer(s.SizeBytes())
n, err := task.CopyInBytes(addr, buf)
if err != nil {
return n, err
}
s.UnmarshalBytes(buf)
return n, nil
}
// Bypass escape analysis on s. The no-op arithmetic operation on the
// pointer makes the compiler think val doesn't depend on s.
// See src/runtime/stubs.go:noescape() in the golang toolchain.
ptr := unsafe.Pointer(s)
val := uintptr(ptr)
val = val^0
// Construct a slice backed by s's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = val
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
len, err := task.CopyInBytes(addr, buf)
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until after the CopyInBytes.
runtime.KeepAlive(s)
return len, err
}
// WriteTo implements io.WriterTo.WriteTo.
func (s *Stat) WriteTo(w io.Writer) (int64, error) {
if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := make([]byte, s.SizeBytes())
s.MarshalBytes(buf)
n, err := w.Write(buf)
return int64(n), err
}
// Bypass escape analysis on s. The no-op arithmetic operation on the
// pointer makes the compiler think val doesn't depend on s.
// See src/runtime/stubs.go:noescape() in the golang toolchain.
ptr := unsafe.Pointer(s)
val := uintptr(ptr)
val = val^0
// Construct a slice backed by s's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = val
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
len, err := w.Write(buf)
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until after the Write.
runtime.KeepAlive(s)
return int64(len), err
}
|
