base-files: Add support for bzipped images in sysupgrade

SVN-Revision: 16408

package/base-files/files/lib/upgrade/common.sh

@@ -45,7 +45,7 @@ pivot() { # <new_root> <old_root>
 }
 
 run_ramfs() { # <command> [...]
-	install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount /sbin/pivot_root /usr/bin/wget /sbin/reboot /bin/sync /bin/dd /bin/grep /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" /bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump /bin/sleep /bin/zcat
+	install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount /sbin/pivot_root /usr/bin/wget /sbin/reboot /bin/sync /bin/dd /bin/grep /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" /bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump /bin/sleep /bin/zcat /usr/bin/bzcat
 	install_bin /sbin/mtd
 	for file in $RAMFS_COPY_BIN; do
 		install_bin $file
@@ -116,6 +116,7 @@ get_image() { # <source> [ <command> ]
 		local magic="$(eval $cmd $from | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
 		case "$magic" in
 			1f8b) conc="| zcat";;
+			425a) conc="| bzcat";;
 		esac
 	fi