// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package disk

import (
	"os"
	"syscall"
)

// Fdatasync is fsync on freebsd/darwin
func Fdatasync(f *os.File) error {
	return syscall.Fsync(int(f.Fd()))
}

// FadviseDontNeed is a no-op
func FadviseDontNeed(f *os.File) error {
	return nil

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package disk

import (
	"os"
	"syscall"

	"golang.org/x/sys/unix"
)

// Fdatasync - fdatasync() is similar to fsync(), but does not flush modified metadata
// unless that metadata is needed in order to allow a subsequent data retrieval
// to  be  correctly  handled.   For example, changes to st_atime or st_mtime

			close(fd, callback) { callback(enosys()); },
			fchmod(fd, mode, callback) { callback(enosys()); },
			fchown(fd, uid, gid, callback) { callback(enosys()); },
			fstat(fd, callback) { callback(enosys()); },
			fsync(fd, callback) { callback(null); },
			ftruncate(fd, length, callback) { callback(enosys()); },
			lchown(path, uid, gid, callback) { callback(enosys()); },
			link(path, link, callback) { callback(enosys()); },

  if (fflush(posix_file->handle) != 0)
    TF_SetStatusFromIOError(status, errno, posix_file->filename);
}

static void Sync(const TF_WritableFile* file, TF_Status* status) {
  // For historical reasons, this does the same as `Flush` at the moment.
  // TODO(b/144055243): This should use `fsync`/`sync`.
  Flush(file, status);
}

static void Close(const TF_WritableFile* file, TF_Status* status) {

pkg syscall (netbsd-arm64-cgo), const SYS_FSTATVFS1 ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_FSYNC = 95
pkg syscall (netbsd-arm64-cgo), const SYS_FSYNC ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_FSYNC_RANGE = 354
pkg syscall (netbsd-arm64-cgo), const SYS_FSYNC_RANGE ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_FTRUNCATE = 201
pkg syscall (netbsd-arm64-cgo), const SYS_FTRUNCATE ideal-int

pkg syscall (darwin-arm64), const SYS_FSTAT_EXTENDED ideal-int
pkg syscall (darwin-arm64), const SYS_FSYNC = 95
pkg syscall (darwin-arm64), const SYS_FSYNC ideal-int
pkg syscall (darwin-arm64), const SYS_FSYNC_NOCANCEL = 408
pkg syscall (darwin-arm64), const SYS_FSYNC_NOCANCEL ideal-int
pkg syscall (darwin-arm64), const SYS_FTRUNCATE = 201
pkg syscall (darwin-arm64), const SYS_FTRUNCATE ideal-int

pkg syscall (freebsd-riscv64), const MS_ASYNC = 1 #53466
pkg syscall (freebsd-riscv64), const MS_ASYNC ideal-int #53466
pkg syscall (freebsd-riscv64), const MS_INVALIDATE = 2 #53466
pkg syscall (freebsd-riscv64), const MS_INVALIDATE ideal-int #53466
pkg syscall (freebsd-riscv64), const MS_SYNC = 0 #53466
pkg syscall (freebsd-riscv64), const MS_SYNC ideal-int #53466

pkg strings, func IndexByte(string, uint8) int
pkg sync/atomic, func SwapInt32(*int32, int32) int32
pkg sync/atomic, func SwapInt64(*int64, int64) int64
pkg sync/atomic, func SwapPointer(*unsafe.Pointer, unsafe.Pointer) unsafe.Pointer
pkg sync/atomic, func SwapUint32(*uint32, uint32) uint32
pkg sync/atomic, func SwapUint64(*uint64, uint64) uint64
pkg sync/atomic, func SwapUintptr(*uintptr, uintptr) uintptr

pkg syscall (freebsd-386), const MSG_WAITALL = 64
pkg syscall (freebsd-386), const MS_ASYNC = 1
pkg syscall (freebsd-386), const MS_ASYNC ideal-int
pkg syscall (freebsd-386), const MS_INVALIDATE = 2
pkg syscall (freebsd-386), const MS_INVALIDATE ideal-int
pkg syscall (freebsd-386), const MS_SYNC = 0
pkg syscall (freebsd-386), const MS_SYNC ideal-int
pkg syscall (freebsd-386), const NET_RT_DUMP = 1

pkg sync, method (*RWMutex) Unlock()
pkg sync, method (*WaitGroup) Add(int)
pkg sync, method (*WaitGroup) Done()
pkg sync, method (*WaitGroup) Wait()
pkg sync, type Cond struct
pkg sync, type Cond struct, L Locker
pkg sync, type Locker interface { Lock, Unlock }
pkg sync, type Locker interface, Lock()
pkg sync, type Locker interface, Unlock()
pkg sync, type Mutex struct
pkg sync, type Once struct