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--- ass:labs-2025:04:tasks:02 [2025/08/07 14:50]
florin.stancu
+++ ass:labs-2025:04:tasks:02 [2025/08/07 20:54] (current)
florin.stancu
@@ Line 36: / Line 36: @@
 <note warning>
-Keep the partition labels as commented!
+Make the partition have the labels documented above (as they are used throughout the RAUC scripts and/or in u-boot)!
 </note>
@@ Line 47: / Line 47: @@
   - Mount the partitions created previously (already in script);
   - Extract the previously-obtained Debian ''debrootfs.tar.gz'' on each rootfs A/B partition (a simple ''tar xf'' will suffice);
+Note: you will lack ''flash_emmc.bin'' required by this script. So let's proceed without testing, for now.
+=== Entering the rootfs ===
+If you wish to enter your newly bootstrapped Debian rootfs, you can use the following script:
+<file bash enter-rootfs.sh>
+#!/bin/bash
+set -e
+ROOTFS=$1
+if [[ -z "$ROOTFS" ]] || [[ ! -d "$ROOTFS/usr/bin" ]]; then
+    echo "[!] Invalid rootfs argument: '$ROOTFS'"
+    exit 1
+fi
+cleanup() {
+    echo "[*] Cleaning up..."
+    for sub in dev/pts dev proc sys run; do
+        if mountpoint -q "$ROOTFS/$sub"; then
+            echo "    Unmounting $ROOTFS/$sub"
+            sudo umount "$ROOTFS/$sub" || true
+        fi
+    done
+}
+trap cleanup EXIT
+echo "[+] Binding chroot filesystems..."
+for fs in dev dev/pts proc sys run; do
+  sudo mount --bind "/$fs" "$ROOTFS/$fs"
+done
+echo "[+] Ensuring /etc/resolv.conf for DNS inside chroot"
+sudo cp /etc/resolv.conf "$ROOTFS/etc/resolv.conf"
+echo "[+] Entering your chroot shell..."
+echo "Type exit to leave"
+sudo chroot "$ROOTFS" /usr/bin/qemu-aarch64-static /bin/bash
+</file>
+You can even run ''apt install'' in there ;)