forked from TrueCloudLab/restic
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.
21 lines
526 B
Go
21 lines
526 B
Go
package sftp
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import (
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"os/exec"
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"github.com/restic/restic/internal/errors"
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)
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// startForeground runs cmd in the foreground, by temporarily switching to the
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// new process group created for cmd. The returned function `bg` switches back
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// to the previous process group.
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func startForeground(cmd *exec.Cmd) (bg func() error, err error) {
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// just start the process and hope for the best
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err = cmd.Start()
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if err != nil {
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return nil, errors.Wrap(err, "cmd.Start")
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}
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bg = func() error { return nil }
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return bg, nil
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}
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