Experimental support for SteamOS recovery images. (#3712 #2875 #1815)

IMG/cpio/ventoy/loop/steamos/ventoy-disk.sh

@@ -0,0 +1,119 @@
+#!/ventoy/busybox/sh
+#************************************************************************************
+# Copyright (c) 2020, longpanda <admin@ventoy.net>
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# 
+#************************************************************************************
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+if is_ventoy_hook_finished; then
+    exit 0
+fi
+
+vtlog "####### $0 $* ########"
+
+VTPATH_OLD=$PATH; PATH=$BUSYBOX_PATH:$VTOY_PATH/tool:$PATH
+
+wait_for_usb_disk_ready
+
+vtdiskname=$(get_ventoy_disk_name)
+if [ "$vtdiskname" = "unknown" ]; then
+    vtlog "ventoy disk not found"
+    exit 0
+fi
+
+/usr/bin/insmod  $VTOY_PATH/modules/dm-mod.ko*
+
+ventoy_udev_disk_common_hook "${vtdiskname#/dev/}2" "noreplace"
+ventoy_create_dev_ventoy_part
+
+
+mkdir -p /ventoy/tmpmnt
+mount /dev/ventoy3 /ventoy/tmpmnt
+mount --bind /ventoy/tmpmnt/lib/modules   /lib/modules
+
+for mod in loop iso9660 ntfs ntfs3 exfat ext2 ext3 ext4 xfs btrfs; do
+    vtlog "modprobe $mod"
+    /usr/bin/modprobe $mod >> $VTLOG 2>&1
+done
+
+umount /lib/modules
+umount /ventoy/tmpmnt
+
+ventoy_remove_all_dm
+
+
+vtimgname=$(get_ventoy_iso_name)
+if [ "$vtimgname" = "unknown" -o -z "$vtimgname" ]; then
+    vterr "image file path not found"
+    exit 0
+fi
+
+if echo "$vtdiskname" | $EGREP -q "nvme|mmc|nbd"; then
+    vtdatapart=${vtdiskname}p1
+else
+    vtdatapart=${vtdiskname}1
+fi
+
+# rw: the holo hook mounts the image rootfs rw
+mkdir -p /run/ventoy-media
+
+if mount "$vtdatapart" /run/ventoy-media >>$VTLOG 2>&1; then    
+    vtlog "mounted $vtdatapart at /run/ventoy-media OK"
+    mount | grep ventoy >>$VTLOG 2>&1    
+else
+    vtlog "mounted $vtdatapart at /run/ventoy-media failed"
+    exit 0
+fi
+
+
+vtimgfile="/run/ventoy-media${vtimgname}"
+if ! [ -f "$vtimgfile" ]; then
+    vterr "$vtimgfile not found on data partition"
+    umount /run/ventoy-media >>$VTLOG 2>&1
+    exit 0
+fi
+
+
+vtloopdev=$(losetup -f)
+if [ -z "$vtloopdev" ]; then
+    vterr "no free loop device"
+    exit 0
+fi
+
+if ! losetup -P "$vtloopdev" "$vtimgfile" >>$VTLOG 2>&1; then
+    vterr "losetup $vtloopdev $vtimgfile failed"
+    exit 0
+fi
+vtlog "attached $vtimgfile to $vtloopdev"
+
+vtloop=0
+while ! [ -e "${vtloopdev}p2" ]; do
+    let vtloop=vtloop+1
+    if [ $vtloop -gt 10 ]; then
+        break
+    fi
+    $SLEEP 0.3
+done
+
+# exact /dev path avoids PARTLABEL/LABEL/UUID collisions with an installed SteamOS
+if [ -e "${vtloopdev}p2" ]; then
+    ln -s "${vtloopdev}p2" /dev/steamos-media-efi
+    vtlog "/dev/steamos-media-efi -> ${vtloopdev}p2"
+else
+    vterr "${vtloopdev}p2 not created, partition scan failed"
+fi
+