feat: Download VirtIO drivers (#304)

src/disk.sh

@@ -5,21 +5,32 @@ set -Eeuo pipefail
 
 : ${DISK_IO:='native'}          # I/O Mode, can be set to 'native', 'threads' or 'io_turing'
 : ${DISK_FMT:=''}            # Disk file format, can be set to "raw" or "qcow2" (default)
+: ${DISK_FLAGS:=''}             # Specifies the options for use with the qcow2 disk format
 : ${DISK_CACHE:='none'}         # Caching mode, can be set to 'writeback' for better performance
 : ${DISK_DISCARD:='on'}         # Controls whether unmap (TRIM) commands are passed to the host.
 : ${DISK_ROTATION:='1'}         # Rotation rate, set to 1 for SSD storage and increase for HDD
-: ${DISK_FLAGS:=''}             # Specifies the options for use with the qcow2 disk format
 
-BOOT="$STORAGE/boot.img"
+BOOT="$STORAGE/$BASE"
+DRIVERS="$STORAGE/drivers.img"
 DISK_OPTS="-object iothread,id=io2"
 
+if [ -f "$BOOT" ] || [ -f "$DRIVERS" ]; then
+  DISK_OPTS="$DISK_OPTS \
+    -device virtio-scsi-pci,id=scsi0,iothread=io2,addr=0x5"
+fi
+
 if [ -f "$BOOT" ]; then
   DISK_OPTS="$DISK_OPTS \
-    -device virtio-scsi-pci,id=scsi0,iothread=io2,addr=0x5 \
     -drive id=cdrom0,if=none,format=raw,readonly=on,file=$BOOT \
     -device scsi-cd,bus=scsi0.0,drive=cdrom0,bootindex=10"
 fi
 
+if [ -f "$DRIVERS" ]; then
+  DISK_OPTS="$DISK_OPTS \
+    -drive id=cdrom1,if=none,format=raw,readonly=on,file=$DRIVERS \
+    -device scsi-cd,bus=scsi0.1,drive=cdrom1"
+fi
+
 fmt2ext() {
   local DISK_FMT=$1
 

src/install.sh

@@ -1,13 +1,15 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-FILE="$STORAGE/boot.img"
-[ -f "$FILE" ] && return 0
+BASE="boot.img"
+[ -f "$STORAGE/$BASE" ] && return 0
 
-TMP="/boot.img"
-rm -f "$TMP"
+if [ -z "$BOOT" ]; then
+  error "No boot disk specified, set BOOT= to the URL of an ISO file." && exit 64
+fi
 
-info "Downloading $BOOT as boot image..."
+BASE=$(basename "$BOOT")
+[ -f "$STORAGE/$BASE" ] && return 0
 
 # Check if running with interactive TTY or redirected to docker log
 if [ -t 1 ]; then
@@ -16,7 +18,26 @@ else
   PROGRESS="--progress=dot:giga"
 fi
 
-[[ "$DEBUG" == [Yy1]* ]] && set -x
+if [[ "${BOOT_MODE,,}" == "windows" ]]; then
+
+  DEST="$STORAGE/drivers.img"
+
+  if [ ! -f "$DEST" ]; then
+
+    info "Downloading VirtIO drivers for Windows..."
+    DRIVERS="https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso"
+
+    { wget "$DRIVERS" -O "$DEST" -q --no-check-certificate --show-progress "$PROGRESS"; rc=$?; } || :
+
+    (( rc != 0 )) && info "Failed to download $DRIVERS, reason: $rc" && rm -f "$DEST"
+
+  fi
+fi
+
+TMP="$STORAGE/${BASE%.*}.tmp"
+rm -f "$TMP"
+
+info "Downloading $BASE as boot image..."
 
 { wget "$BOOT" -O "$TMP" -q --no-check-certificate --show-progress "$PROGRESS"; rc=$?; } || :
 
@@ -29,9 +50,6 @@ if ((SIZE<100000)); then
   error "Invalid ISO file: Size is smaller than 100 KB" && exit 62
 fi
 
-mv -f "$TMP" "$FILE"
-
-{ set +x; } 2>/dev/null
-[[ "$DEBUG" == [Yy1]* ]] && echo
+mv -f "$TMP" "$STORAGE/$BASE"
 
 return 0