package sysfs

import (
	"os"
	"syscall"

	"github.com/tetratelabs/wazero/internal/platform"
)

func fsync(f *os.File) syscall.Errno {
	errno := platform.UnwrapOSError(f.Sync())
	// Coerce error performing stat on a directory to 0, as it won't work
	// on Windows.
	switch errno {
	case syscall.EACCES /* Go 1.20 */, syscall.EBADF /* Go 1.18 */ :
		if st, err := f.Stat(); err == nil && st.IsDir() {
			errno = 0
		}
	}
	return errno
}