//go:build !windows // +build !windows package restic import ( "os" "os/user" "strconv" "syscall" "github.com/restic/restic/internal/debug" "github.com/restic/restic/internal/errors" ) // uidGidInt returns uid, gid of the user as a number. func uidGidInt(u *user.User) (uid, gid uint32, err error) { ui, err := strconv.ParseUint(u.Uid, 10, 32) if err != nil { return 0, 0, errors.Errorf("invalid UID %q", u.Uid) } gi, err := strconv.ParseUint(u.Gid, 10, 32) if err != nil { return 0, 0, errors.Errorf("invalid GID %q", u.Gid) } return uint32(ui), uint32(gi), nil } // checkProcess will check if the process retaining the lock // exists and responds to SIGHUP signal. // Returns true if the process exists and responds. func (l *Lock) processExists() bool { proc, err := os.FindProcess(l.PID) if err != nil { debug.Log("error searching for process %d: %v\n", l.PID, err) return false } defer func() { _ = proc.Release() }() debug.Log("sending SIGHUP to process %d\n", l.PID) err = proc.Signal(syscall.SIGHUP) if err != nil { debug.Log("signal error: %v, lock is probably stale\n", err) return false } return true }