[projects/geninitrd] avoid ls -l errors if ROOT is unset

[glen]

commit e4f493e70d27c821a2511ff17e74e42f015ee662
Author: Elan Ruusamäe <glen at delfi.ee>
Date:   Tue Dec 24 03:04:59 2013 +0200

    avoid ls -l errors if ROOT is unset

 geninitrd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/geninitrd b/geninitrd
index 53bb1be..c26cbcc 100755
--- a/geninitrd
+++ b/geninitrd
@@ -826,7 +826,7 @@ initrd_gen_setrootdev() {
 		if [ "${ROOT##/dev/}" != "${ROOT}" ]; then
 			rootnr="$(busybox awk -v rootnode="${ROOT##/dev/}" '$4 == rootnode { print 256 * $1 + $2 }' /proc/partitions)"
 			# fallback to ls
-			if [ -z "$rootnr" ]; then
+			if [ -z "$rootnr" -a -e "$ROOT" ]; then
 				rootnr="$(busybox ls -lL ${ROOT} | busybox awk '{if (/^b/) { print 256 * $3 + $4; }}')"
 			fi
 			if [ -n "$rootnr" ]; then
================================================================

---- gitweb:

http://git.pld-linux.org/gitweb.cgi/projects/geninitrd.git/commitdiff/e4f493e70d27c821a2511ff17e74e42f015ee662