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|
//go:build darwin
package fuse
import (
"syscall"
"unsafe"
)
// Extended attributes support for macOS
const (
// macOS-specific flags
XATTR_NOFOLLOW = 0x0001
XATTR_CREATE = 0x0002
XATTR_REPLACE = 0x0004
)
func setXattr(path, name string, value []byte, flags int) error {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
nameBytes, err := syscall.BytePtrFromString(name)
if err != nil {
return err
}
var valuePtr unsafe.Pointer
if len(value) > 0 {
valuePtr = unsafe.Pointer(&value[0])
}
_, _, errno := syscall.Syscall6(syscall.SYS_SETXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(unsafe.Pointer(nameBytes)),
uintptr(valuePtr),
uintptr(len(value)),
uintptr(0), // position (not used for regular files)
uintptr(flags))
if errno != 0 {
return errno
}
return nil
}
func getXattr(path, name string, value []byte) (int, error) {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return 0, err
}
nameBytes, err := syscall.BytePtrFromString(name)
if err != nil {
return 0, err
}
var valuePtr unsafe.Pointer
if len(value) > 0 {
valuePtr = unsafe.Pointer(&value[0])
}
size, _, errno := syscall.Syscall6(syscall.SYS_GETXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(unsafe.Pointer(nameBytes)),
uintptr(valuePtr),
uintptr(len(value)),
uintptr(0), // position
uintptr(0)) // options
if errno != 0 {
return 0, errno
}
return int(size), nil
}
func listXattr(path string, list []byte) (int, error) {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return 0, err
}
var listPtr unsafe.Pointer
if len(list) > 0 {
listPtr = unsafe.Pointer(&list[0])
}
size, _, errno := syscall.Syscall6(syscall.SYS_LISTXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(listPtr),
uintptr(len(list)),
uintptr(0), // options
0, 0)
if errno != 0 {
return 0, errno
}
return int(size), nil
}
func removeXattr(path, name string) error {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
nameBytes, err := syscall.BytePtrFromString(name)
if err != nil {
return err
}
_, _, errno := syscall.Syscall6(syscall.SYS_REMOVEXATTR,
uintptr(unsafe.Pointer(pathBytes)),
uintptr(unsafe.Pointer(nameBytes)),
uintptr(0), // options
0, 0, 0)
if errno != 0 {
return errno
}
return nil
}
func isXattrSupported() bool {
return true
}
|
