From 5f580a148a73e996851b711426e0759fa1f8baef Mon Sep 17 00:00:00 2001
From: yihuang <yi.codeplayer@gmail.com>
Date: Fri, 13 Nov 2020 22:54:30 +0800
Subject: [PATCH] cosmovisor: pass quit signals to subprocess (#7776)

fix #7740

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
---
 cosmovisor/process.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/cosmovisor/process.go b/cosmovisor/process.go
index 055c4ebfc657..cfd201e2be99 100644
--- a/cosmovisor/process.go
+++ b/cosmovisor/process.go
@@ -4,9 +4,13 @@ import (
 	"bufio"
 	"fmt"
 	"io"
+	"log"
+	"os"
 	"os/exec"
+	"os/signal"
 	"strings"
 	"sync"
+	"syscall"
 )
 
 // LaunchProcess runs a subprocess and returns when the subprocess exits,
@@ -39,6 +43,15 @@ func LaunchProcess(cfg *Config, args []string, stdout, stderr io.Writer) (bool,
 		return false, fmt.Errorf("launching process %s %s: %w", bin, strings.Join(args, " "), err)
 	}
 
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs, syscall.SIGQUIT, syscall.SIGTERM)
+	go func() {
+		sig := <-sigs
+		if err := cmd.Process.Signal(sig); err != nil {
+			log.Fatal(err)
+		}
+	}()
+
 	// three ways to exit - command ends, find regexp in scanOut, find regexp in scanErr
 	upgradeInfo, err := WaitForUpgradeOrExit(cmd, scanOut, scanErr)
 	if err != nil {