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backend: always start backend process in separate process group

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The process group is necessary to properly handle ctrl-c.
This commit is contained in:
Michael Eischer
2025-04-14 20:18:58 +02:00
parent 4c19d6410f
commit 914bd699be
1 changed files with 7 additions and 5 deletions
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12
internal/backend/util/foreground_unix.go
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@@ -25,6 +25,12 @@ func tcsetpgrp(fd int, pid int) error {
}
func startForeground(cmd *exec.Cmd) (bg func() error, err error) {
// run the command in its own process group
// this ensures that sending ctrl-c to restic will not immediately stop the backend process.
cmd.SysProcAttr = &unix.SysProcAttr{
Setpgid: true,
}
// open the TTY, we need the file descriptor
tty, err := os.OpenFile("/dev/tty", os.O_RDWR, 0)
if err != nil {
@@ -52,11 +58,6 @@ func startForeground(cmd *exec.Cmd) (bg func() error, err error) {
signal.Ignore(unix.SIGTTIN)
signal.Ignore(unix.SIGTTOU)
// run the command in its own process group
cmd.SysProcAttr = &unix.SysProcAttr{
Setpgid: true,
}
// start the process
err = cmd.Start()
if err != nil {
@@ -92,5 +93,6 @@ func startFallback(cmd *exec.Cmd) (bg func() error, err error) {
bg = func() error {
return nil
}
return bg, cmd.Start()
}