add static uid, but handle squashfs rootfs systems correctly

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@469 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/openntpd/ipkg/CONTROL/postinst b/package/openntpd/ipkg/CONTROL/postinst
index 8881116..daa0baf 100755 (executable)
--- a/package/openntpd/ipkg/CONTROL/postinst
+++ b/package/openntpd/ipkg/CONTROL/postinst
@@ -1,25 +1,35 @@
 #!/bin/sh
-grep -q '^ntp[[:space:]]*123/udp' ${IPKG_INSTROOT}/etc/services 2>/dev/null
-[ $? -ne 0 ] && echo "ntp      123/udp" >>${IPKG_INSTROOT}/etc/services
 
-NU=ntp
-U=`grep "^$NU:" ${IPKG_INSTROOT}/etc/passwd 2>/dev/null | cut -d: -f3`
-if [ .$U = . ]; then
-       U=`cut -d: -f3 ${IPKG_INSTROOT}/etc/passwd 2>/dev/null | sort -n | tail -1`
-       [ .$U = . ] && U=49
-       U=`expr $U + 1`
-       [ $U -lt 50 ] && U=50
-       G=`grep "^$NU:" ${IPKG_INSTROOT}/etc/group 2>/dev/null | cut -d: -f3`
-       if [ .$G = . ]; then
-               G=`cut -d: -f3 ${IPKG_INSTROOT}/etc/group 2>/dev/null | sort -n | tail -1`
-               [ .$G = . ] && G=49
-               G=`expr $G + 1`
-               [ $G -lt 50 ] && G=50
+name=ntp
+id=50
+
+# do not change below
+# check if we are on real system
+if [ -z "${IPKG_INSTROOT}" ]; then
+       # create copies of passwd and group, if we use squashfs
+       rootfs=`mount |awk '/root/ { print $5 }'`
+       if [ "$rootfs" = "squashfs" ]; then
+               if [ -h /etc/group ]; then
+                       rm /etc/group
+                       cp /rom/etc/group /etc/group
+               fi
+               if [ -h /etc/passwd ]; then
+                       rm /etc/passwd
+                       cp /rom/etc/passwd /etc/passwd
+               fi
        fi
-       LINE="$NU:x:$U:$G::/tmp/.ntp:/bin/false"
-       echo "$LINE" >>${IPKG_INSTROOT}/etc/passwd
-else
-       awk -F: '{ if($1=="ntp") printf("%s:%s:%s:%s:%s:/tmp/.ntp:/bin/false\n",$1,$2,$3,$4,$5); else print $0 }' ${IPKG_INSTROOT}/etc/passwd >/tmp/$$
-       mv /tmp/$$ ${IPKG_INSTROOT}/etc/passwd
-       chmod 644 ${IPKG_INSTROOT}/etc/passwd
 fi
+
+echo ""
+if [ -z "$(grep ^\\${name}: ${IPKG_INSTROOT}/etc/group)" ]; then 
+       echo "adding group $name to /etc/group"
+       echo "${name}:x:${id}:" >> ${IPKG_INSTROOT}/etc/group  
+fi
+
+if [ -z "$(grep ^\\${name}: ${IPKG_INSTROOT}/etc/passwd)" ]; then 
+       echo "adding user $name to /etc/passwd"
+       echo "${name}:x:${id}:${id}:${name}:/tmp/.${name}:/bin/false" >> ${IPKG_INSTROOT}/etc/passwd
+fi
+
+grep -q '^ntp[[:space:]]*123/udp' ${IPKG_INSTROOT}/etc/services 2>/dev/null
+[ $? -ne 0 ] && echo "ntp      123/udp" >>${IPKG_INSTROOT}/etc/services