Source: fd_fsync_darwin.go in package internal/poll

Source File
	fd_fsync_darwin.go

Belonging Package
	internal/poll


package poll

import "syscall"

Fsync invokes SYS_FCNTL with SYS_FULLFSYNC because on OS X, SYS_FSYNC doesn't fully flush contents to disk. See Issue #26650 as well as the man page for fsync on OS X.

func (fd *FD) Fsync() error {
	if err := fd.incref(); err != nil {
		return err
	}
	defer fd.decref()
	return ignoringEINTR(func() error {
		_, err := fcntl(fd.Sysfd, syscall.F_FULLFSYNC, 0)
		return err
	})


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