wip

Author: Omarabdul3ziz

scripts/debug_image.sh

@@ -1,17 +1,20 @@
 #!/bin/bash
-
+set -x
 socket="/tmp/virtiofs.sock"
 
 rootfs=""
 kernel="$rootfs/boot/vmlinuz"
 initram="$rootfs/boot/initrd.img"
 cmdline="rw console=ttyS0 reboot=k panic=1 root=vroot rootfstype=virtiofs rootdelay=30"
+overlayfs="/tmp/merged"
+flist=""
 
 user="user"
 pass="pass"
 name="cloud"
 
 fspid=0
+flpid=0
 
 fail() {
     echo "$1" >&2
@@ -31,19 +34,30 @@ usage() {
 }
 
 handle_options() {
+
     while [[ "$#" -gt 0 ]]; do
         case $1 in
         --rootfs)
             rootfs="$2"
             kernel="$rootfs/boot/vmlinuz"
             initram="$rootfs/boot/initrd.img"
-
-            if [[ -z "$rootfs" ]]; then
-                echo "Error: -r (rootfs) flag is required."
-                usage
+            shift
+            ;;
+        --flist)
+            flist="$2"
+            shift
+            ;;
+        --cidata)
+            cidata="$2"
+            shift
+            ;;
+        --init)
+            if [ ! -z "$2" ]; then
+                cmdline="$cmdline init=$2"
             fi
             shift
             ;;
+        
         --user)
             user="$2"
             shift
@@ -56,12 +70,7 @@ handle_options() {
             name="$2"
             shift
             ;;
-        --init)
-            if [ ! -z "$2" ]; then
-                cmdline="$cmdline init=$2"
-            fi
-            shift
-            ;;
+        
         *)
             usage
             ;;
@@ -72,6 +81,8 @@ handle_options() {
 }
 
 validate() {
+    # if no rootfs or metadata, fail
+    # check other binaries
     which virtiofsd &>/dev/null || fail "virtiofsd not found in PATH"
     which cloud-hypervisor &>/dev/null || fail "cloud-hypervior not found in path"
 
@@ -112,14 +123,16 @@ EOF
 start_fs() {
     sudo virtiofsd \
         --socket-path="${socket}" \
-        --shared-dir="${rootfs}" \
+        --shared-dir="${overlayfs}" \
         --cache=never \
         &
 
     fspid=$!
 }
 
 cleanup() {
+    sudo umount "$overlayfs"
+    kill "$flpid" &>/dev/null
     kill "$fspid" &>/dev/null || true
 }
 trap cleanup EXIT
@@ -137,8 +150,53 @@ run_hypervisor() {
         --console off
 }
 
+create_rwlayer() {
+    sudo mkdir -p /tmp/upper /tmp/workdir "$overlayfs"
+
+    sudo mount \
+        -t overlay \
+        -o lowerdir="$rootfs",upperdir=/tmp/upper,workdir=/tmp/workdir \
+        none \
+        "$overlayfs"
+}
+
+mount_flist() {
+    wget "$flist" -O /tmp/flist.flist
+
+    rootfs=/home/omar/tmp
+    mkdir -p "$rootfs"
+    rfs1 --meta /tmp/flist.flist "$rootfs" &
+
+    flpid=$!
+}
+
+# decompress_kernel() {
+#     wget -O /tmp/extract-vmlinux https://raw.githubusercontent.com/torvalds/linux/master/scripts/extract-vmlinux
+#     chmod +x /tmp/extract-vmlinux
+    
+# }
+
+prepare_cloud_image() {
+    # chroot and install ci
+    # symlink to host vmlinuz/initrd
+    # load virtiofs and update ramfs
+}
+
+boot() {
+    start_fs
+    run_hypervisor
+}
+
 handle_options "$@"
+
 validate
+
+# if no cidata
 create_cidata
-start_fs
-run_hypervisor
+
+# if is metadata
+mount_flist
+
+create_rwlayer
+
+boot