X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=blobdiff_plain;f=include%2Fshell.sh;h=f6be6c526f26fb489cc660d7201bce3c3a1117b7;hp=6ee0cf6030ac5e0a71d7be1c2438c58ee9724caf;hb=065091e0152a13dab298f115973aebdf589d724f;hpb=60c1f0f64d23003a19a07d6b9638542130f6641d

diff --git a/include/shell.sh b/include/shell.sh
index 6ee0cf6030..f6be6c526f 100644
--- a/include/shell.sh
+++ b/include/shell.sh
@@ -13,3 +13,22 @@ isset() {
 	eval "var=\"\${$1}\""
 	[ -n "$var" ]
 }
+
+trapret() {(
+	local retvals="$1"; shift
+	local cmd="$1"; shift
+	for retval in $(echo $retvals); do
+		local trap_$retval=1
+	done
+	"$cmd" "$@" || {
+		local retval="$?"
+		eval "trapped=\${trap_$retval}"
+		[ -n "$trapped" ] || {
+			return $retval
+		}
+	}
+)}
+
+md5s() {
+	which md5sum 2>&1 >/dev/null && md5sum "$@" | awk '{print $1}' || md5 "$@"
+}