1 files changed, 83 insertions, 0 deletions

diff --git a/utils/nwztools/scripts/dump_rootfs.sh b/utils/nwztools/scripts/dump_rootfs.sh
new file mode 100644
index 0000000000..da20e43b41
--- /dev/null
+++ b/utils/nwztools/scripts/dump_rootfs.sh
@@ -0,0 +1,83 @@
+#!/bin/sh
+
+# The updater script on the NWZ has a major bug/feature:
+# it does NOT clear the update flag if the update scrit fails
+# thus causing a update/reboot loop and a bricked device
+# always clear to make sure we don't end up being screwed
+nvpflag fup 0xFFFFFFFF
+
+#
+# This script dumps the root filesystem of the device and saves the resulting
+# in rootfs.tgz in the user partition.
+#
+
+# 1) First we need to detect what is the user (aka contents) device. It is mounted
+# read-only at /contents during upgrade and the device is usually /dev/contents_part
+# The output of mount will look like this:
+# /dev/contents_part on /contents type ....
+CONTENTS="/contents"
+CONTENTS_PART=`mount | grep contents | awk '{ print $1 }'`
+DUMP_DIR="$CONTENTS/dump_rootfs"
+
+lcdmsg -c -f /usr/local/bin/font_08x12.bmp -l 0,3 "Contents partition:\n$CONTENTS_PART"
+
+# 2) We need to remount the contents partition in read-write mode be able to
+# write something on it
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,6 "Remount $CONTENTS rw"
+if ! mount -o remount,rw $CONTENTS_PART $CONTENTS
+then
+    lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,7 "ERROR: remount failed"
+    sleep 10
+    exit 0
+fi
+
+# 3) Dump various files
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,8 "Dumping various files"
+
+mkdir -p "$DUMP_DIR"
+mount 2>&1 >$DUMP_DIR/mount.txt
+dmesg 2>&1 >$DUMP_DIR/dmesg.txt
+mmcinfo map 2>&1 >$DUMP_DIR/mmcinfo_map.txt
+sysinfo 2>&1 >$DUMP_DIR/sysinfo.txt
+
+# 4) Dump / (which is the FU initrd)
+# Don't forget to exclude contents, that would be useless
+# NOTE: this code assumes that CONTENTS is always at the root: /contents
+# NOTE: also exclude /sys because it makes tar stop earlier
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,9 "Dumping FU initrd..."
+LIST=""
+for entry in /*
+do
+    # exclude contents
+    if [ "$entry" != "$CONTENTS" -a "$entry" != "/sys" ]
+    then
+        LIST="$LIST $entry"
+    fi
+done
+tar -cf $DUMP_DIR/fu_initrd.tar $LIST
+find / > $DUMP_DIR/fu_initrd.list
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,10 "Done."
+
+# 5) Dump the root filesystem
+# Mount the root filesystem read-only and dump it
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,12 "Dumping rootfs..."
+ROOTFS_TMP_DIR=/tmp/rootfs
+mkdir $ROOTFS_TMP_DIR
+. /install_script/constant.txt
+if ! mount -t ext2 -o ro $COMMON_ROOTFS_PARTITION $ROOTFS_TMP_DIR
+then
+    lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,13 "ERROR: cannot mount rootfs"
+else
+    tar -cf $DUMP_DIR/rootfs.tar $ROOTFS_TMP_DIR
+    umount $ROOTFS_TMP_DIR
+    lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,13 "Done."
+fi
+
+# 4) Success screen
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,15 "Rebooting in 10 seconds."
+
+sleep 10
+
+sync
+
+exit 0