From 43d6b9d0085c393c7cdb0fd1f1181654d0f87e61 Mon Sep 17 00:00:00 2001
From: Pingfan Liu <piliu@redhat.com>
Date: Mon, 4 Dec 2017 17:24:11 +0800
Subject: [PATCH] dracut.sh: for_each_host_xx() function should indicate the
 empty case

The caller of "for_each_host_xx func" needs to tell three cases:
func success/ fail / not be called.
E.g, in kdump case, host_devs can be empty, and we want to know it.

Signed-off-by: Pingfan Liu <piliu@redhat.com>

Cherry-picked from: e6199960d9bbfe6d860a32716b7e9bac7e657a4f
Resolves: #1520721
---
 dracut-functions.sh | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/dracut-functions.sh b/dracut-functions.sh
index 23768bdc..4051596b 100755
--- a/dracut-functions.sh
+++ b/dracut-functions.sh
@@ -593,7 +593,8 @@ for_each_host_dev_fs()
     local _dev
     local _ret=1
 
-    [[ "${#host_fs_types[@]}" ]] || return 0
+    [[ "${#host_fs_types[@]}" ]] || return 2
+
 
     for _dev in "${!host_fs_types[@]}"; do
         $_func "$_dev" "${host_fs_types[$_dev]}" && _ret=0
@@ -652,7 +653,7 @@ for_each_host_dev_and_slaves_all()
     local _dev
     local _ret=1
 
-    [[ "${host_devs[@]}" ]] || return 0
+    [[ "${host_devs[@]}" ]] || return 2
 
     for _dev in "${host_devs[@]}"; do
         [[ -b "$_dev" ]] || continue
@@ -668,7 +669,7 @@ for_each_host_dev_and_slaves()
     local _func="$1"
     local _dev
 
-    [[ "${host_devs[@]}" ]] || return 0
+    [[ "${host_devs[@]}" ]] || return 2
 
     for _dev in "${host_devs[@]}"; do
         [[ -b "$_dev" ]] || continue