File system sync (syncfs) in Go

syncfs

is just a system call that runs easily in Go.

However, since syscall

package does not have a syscall constant syncfs

, you can use the golang.org/x/sys/unix

one it defines (actually not necessary, since the syscall constant is just a number, but it doesn't hurt to use that package).

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

func syncfs(fd int) error {
    _, _, err := unix.Syscall(unix.SYS_SYNCFS, uintptr(fd), 0, 0)
    if err != 0 {
        return err
    }
    return nil
}

      

        
        
        
      

    

For completeness, here is a solution just using the package syscall

:

import "syscall"

func syncfs(fd int) error {
    _, _, err := syscall.Syscall(306, uintptr(fd), 0, 0)
    if err != 0 {
        return err
    }
    return nil
}