[kexec-tools/f19] dracut-module-setup.sh: improve the approach to get a bridged interface list

[Baoquan He]

commit 29009939636126d58292fc626f66798473cefeb5
Author: WANG Chao <chaowang at redhat.com>
Date:   Thu Jun 13 10:06:28 2013 +0800

    dracut-module-setup.sh: improve the approach to get a bridged interface list
    
    When directory is empty, echo * will output *, not empty string. That's
    not intended.
    Also it looks a little bit nicer now.
    
    Signed-off-by: WANG Chao <chaowang at redhat.com>
    Acked-by: Baoquan He <bhe at redhat.com>

 dracut-module-setup.sh |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
index 87d0a20..725eecf 100755
--- a/dracut-module-setup.sh
+++ b/dracut-module-setup.sh
@@ -100,6 +100,7 @@ kdump_get_perm_addr() {
 
 kdump_setup_bridge() {
     local _netdev=$1
+    local _brif=""
     for _dev in `ls /sys/class/net/$_netdev/brif/`; do
         if kdump_is_bond "$_dev"; then
             kdump_setup_bond "$_dev"
@@ -110,8 +111,9 @@ kdump_setup_bridge() {
         else
             echo -n " ifname=$_dev:$(kdump_get_mac_addr $_dev)" >> ${initdir}/etc/cmdline.d/41bridge.conf
         fi
+        _brif+="$_dev,"
     done
-    echo " bridge=$_netdev:$(cd /sys/class/net/$_netdev/brif/; echo * | sed -e 's/ /,/g')" >> ${initdir}/etc/cmdline.d/41bridge.conf
+    echo " bridge=$_netdev:$(echo $_brif | sed -e 's/,$//')" >> ${initdir}/etc/cmdline.d/41bridge.conf
 }
 
 kdump_setup_bond() {