mirror of
https://github.com/restic/restic.git
synced 2024-07-02 08:40:55 +02:00
05958caf6e
This is a follow-up on fb9729fdb9, which
runs the `ssh` in its own process group and selects that process group
as the foreground group. After the sftp connection is established,
restic switches back to the previous foreground process group.
This allows `ssh` to prompt for the password, but it won't receive
the interrupt signal (SIGINT, ^C) later on, because it is not in the
foreground process group any more, allowing a clean tear down.
22 lines
526 B
Go
22 lines
526 B
Go
package sftp
|
|
|
|
import (
|
|
"os/exec"
|
|
|
|
"github.com/restic/restic/internal/errors"
|
|
)
|
|
|
|
// startForeground runs cmd in the foreground, by temporarily switching to the
|
|
// new process group created for cmd. The returned function `bg` switches back
|
|
// to the previous process group.
|
|
func startForeground(cmd *exec.Cmd) (bg func() error, err error) {
|
|
// just start the process and hope for the best
|
|
err = cmd.Start()
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "cmd.Start")
|
|
}
|
|
|
|
bg = func() error { return nil }
|
|
return bg, nil
|
|
}
|