base-files: make postinst script run inside a subshell

Signed-off-by: John Crispin <blogic@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42800 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
index fafb7a3..7f14822 100755 (executable)
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -173,7 +173,7 @@ default_prerm() {
 default_postinst() {
        local name rusers
        name=$(echo $(basename $1) | cut -d. -f1)
-       [ -f ${IPKG_INSTROOT}/usr/lib/opkg/info/${name}.postinst-pkg ] && . ${IPKG_INSTROOT}/usr/lib/opkg/info/${name}.postinst-pkg
+       [ -f ${IPKG_INSTROOT}/usr/lib/opkg/info/${name}.postinst-pkg ] && ( . ${IPKG_INSTROOT}/usr/lib/opkg/info/${name}.postinst-pkg )
        rusers=$(grep "Require-User:" ${IPKG_INSTROOT}/usr/lib/opkg/info/${name}.control)
        [ -n "$rusers" ] && {
                local user group