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@@ -0,0 +1,46 @@
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include $(TOPDIR)/rules.mk
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PKG_NAME:=qemu-vms
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PKG_VERSION:=0.0.1
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PKG_RELEASE:=1
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PKG_MAINTAINER:=Konstantine Shevlakov <shevlakov@132lan.ru>
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include $(INCLUDE_DIR)/package.mk
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define Package/$(PKG_NAME)
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SECTION:=utils
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CATEGORY:=Utilities
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PKGARCH:=all
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TITLE:=QEMU Virtual Machines Simple (VMS)
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DEPENDS:= +qemu-x86_64-softmmu \
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+qemu-bridge-helper \
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+minicom \
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+socat
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endef
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define Package/$(PKG_NAME)/description
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Scripts to run Virtual Machines using QEMU via uci shell.
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Support mupltiple run stop and manage machnes via tty.
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endef
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define Package/$(PKG_NAME)/conffiles
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/etc/config/qemu-vms
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endef
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define Build/Prepare
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endef
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define Build/Configure
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endef
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define Build/Compile
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endef
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define Package/$(PKG_NAME)/install
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$(CP) ./root/* $(1)/
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endef
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$(eval $(call BuildPackage,$(PKG_NAME)))
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@@ -0,0 +1,45 @@
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config pci-passthrough 'wifi_example'
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option pci_id '05:00.0'
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option vendor_id '14c3 7915'
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config usb-passthrough 'example_usb'
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option vendor_id '0bda'
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option product_id 'c811'
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config network 'tap_example'
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option mac '52:54:00:31:6c:4d'
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option ifname 'tap0'
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config network 'tap_example_bridge'
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option mac '52:54:00:31:6c:4e'
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option ifname 'tap1'
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option bridge 'br-tap'
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config vm 'vm_example'
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option enabled '1'
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option image '/mnt/disk/vm/openwrt.img'
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option memory '256'
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option smp '1'
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option cpu 'host'
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option pci_passthrough 'wifi_ap'
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option display_type 'serial'
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list network 'tap_example'
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config vm 'winxp_example'
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option enabled '1'
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option memory '2048'
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option smp '2'
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option cpu 'qemu64'
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option display_type 'vnc'
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option vnc_port '5902'
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list network 'tap_example_bridge'
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option cdrom '/mnt/disk/vm/wxp.iso'
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option image '/mnt/disk/vm/xp.img'
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option disk_bus 'ide'
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list custom_arg '-boot order=d'
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list custom_arg '-machine pc-i440fx'
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list custom_arg '-global q35-pcihost.x-pci-hole64-fix=false'
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list custom_arg '-drive if=floppy,file=/mnt/disk/vm/floppy_xp.img,format=raw'
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list custom_arg '-device VGA,vgamem_mb=64'
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Executable
+249
@@ -0,0 +1,249 @@
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#!/bin/sh /etc/rc.common
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START=95
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STOP=10
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USE_PROCD=1
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STATUS_DIR="/var/run/qemu-vms"
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is_anonymous_section() {
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# UCI auto-generated names look like: cfgXXXXXX (cfg + hex)
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case "$1" in
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cfg[0-9a-f][0-9a-f][0-9a-f][0-9a-f]*) return 0 ;;
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*) return 1 ;;
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esac
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}
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warn_if_anonymous() {
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local cfg="$1"
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if is_anonymous_section "$cfg"; then
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logger -t qemu-vms "WARNING: VM section '$cfg' is anonymous (no name set). " \
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"Paths (console/qmp socket, pidfile) are derived from this auto-generated " \
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"UCI id and may change if the config is reordered or the section is recreated. " \
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"Please set an explicit section name, e.g. config vm 'myvm'."
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fi
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}
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build_netargs() {
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local cfg="$1"
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idx=0
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netdev_opts=""
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device_opts=""
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config_list_foreach "$cfg" network _add_net
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}
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_add_net() {
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local netcfg="$1"
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local mac ifname bridge
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config_get mac "$netcfg" mac
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config_get ifname "$netcfg" ifname
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config_get bridge "$netcfg" bridge
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local id="net${idx}"
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# QEMU's tap "script=" hook only ever calls the script with the tap
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# ifname as $1 - there is no way to pass a second argument (like the
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# target bridge) through QEMU itself. So instead of pointing directly
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# at /etc/qemu-ifup, generate a tiny per-interface wrapper that bakes
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# in this network section's bridge and calls /etc/qemu-ifup with both
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# arguments. If "bridge" is empty, the wrapper still runs but passes
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# an empty $2, and /etc/qemu-ifup simply skips the enslave step.
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local ifup_wrapper="$STATUS_DIR/qemu-ifup-$netcfg.sh"
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mkdir -p "$STATUS_DIR"
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cat > "$ifup_wrapper" <<-EOF
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#!/bin/sh
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exec /etc/qemu-ifup "\$1" "$bridge"
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EOF
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chmod +x "$ifup_wrapper"
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netdev_opts="$netdev_opts -netdev tap,id=$id,ifname=$ifname,script=$ifup_wrapper,downscript=no"
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local mac_opt=""
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[ -n "$mac" ] && mac_opt=",mac=$mac"
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device_opts="$device_opts -device virtio-net-pci${mac_opt},netdev=$id"
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idx=$((idx + 1))
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}
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build_usbargs() {
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local cfg="$1"
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usb_opts=""
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usb_needed=0
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config_list_foreach "$cfg" usb_passthrough _add_usb
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}
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_add_usb() {
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local usbcfg="$1"
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local vendor_id product_id
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config_get vendor_id "$usbcfg" vendor_id
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config_get product_id "$usbcfg" product_id
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[ -n "$vendor_id" ] && [ -n "$product_id" ] || return 0
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usb_opts="$usb_opts -device usb-host,vendorid=0x$vendor_id,productid=0x$product_id"
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usb_needed=1
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}
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build_customargs() {
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local cfg="$1"
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custom_opts=""
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config_list_foreach "$cfg" custom_arg _add_customarg
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}
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_add_customarg() {
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local arg="$1"
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# Deliberately unquoted below (word-splitting is intentional): a
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# single list entry like "-device foo,bar=baz" should become two
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# separate argv elements ("-device" and "foo,bar=baz"), same as if
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# the admin had typed it directly on a qemu command line. This is an
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# escape hatch for arbitrary flags we don't have a dedicated UCI
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# option for - the admin is trusted with their own local config.
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custom_opts="$custom_opts $arg"
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}
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build_diskargs() {
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local cfg="$1"
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local image="$2"
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local bus
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config_get bus "$cfg" disk_bus "virtio"
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disk_controller_opts=""
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disk_opts=""
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case "$bus" in
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virtio)
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disk_opts="-drive file=$image,format=raw,if=virtio"
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;;
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ide)
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# Widest guest compatibility (old Windows/DOS/legacy kernels
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# without virtio drivers), at some cost to I/O throughput.
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disk_opts="-drive file=$image,format=raw,if=ide"
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;;
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scsi)
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disk_controller_opts="-device virtio-scsi-pci,id=scsi0"
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disk_opts="-drive file=$image,format=raw,if=none,id=drive0 -device scsi-hd,drive=drive0,bus=scsi0.0"
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;;
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sata|ahci)
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disk_controller_opts="-device ahci,id=ahci0"
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disk_opts="-drive file=$image,format=raw,if=none,id=drive0 -device ide-hd,drive=drive0,bus=ahci0.0"
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;;
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*)
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logger -t qemu-vms "WARNING: VM '$cfg' has unknown disk_bus '$bus', falling back to virtio"
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disk_opts="-drive file=$image,format=raw,if=virtio"
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;;
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esac
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}
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start_vm() {
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local cfg="$1"
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local enabled image memory smp cpu pci_passthrough
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config_get_bool enabled "$cfg" enabled 0
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[ "$enabled" = "1" ] || return 0
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local existing_pid
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if [ -n "$existing_pid" ] && kill -0 "$existing_pid" 2>/dev/null && \
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grep -aq "qemu-system-x86_64" "/proc/$existing_pid/cmdline" 2>/dev/null; then
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logger -t qemu-vms "start_vm: '$cfg' already running (pid $existing_pid), skipping"
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return 0
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fi
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warn_if_anonymous "$cfg"
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config_get image "$cfg" image
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config_get cdrom "$cfg" cdrom
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config_get memory "$cfg" memory 128
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config_get smp "$cfg" smp 1
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config_get cpu "$cfg" cpu "host"
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config_get pci_passthrough "$cfg" pci_passthrough
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config_get display_type "$cfg" display_type "serial"
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config_get vnc_port "$cfg" vnc_port
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local console_sock="/var/run/qemu-$cfg.sock"
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local console_log="/var/log/qemu-$cfg-console.log"
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local qmp_sock="/var/run/qemu-$cfg.qmp"
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build_netargs "$cfg"
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build_usbargs "$cfg"
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build_customargs "$cfg"
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build_diskargs "$cfg" "$image"
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local pci_id="" vendor_id="" pci_opts=""
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if [ -n "$pci_passthrough" ]; then
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config_get pci_id "$pci_passthrough" pci_id
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config_get vendor_id "$pci_passthrough" vendor_id
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if [ -n "$vendor_id" ] && [ -n "$pci_id" ]; then
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[ -e "/sys/bus/pci/devices/0000:$pci_id/driver" ] || \
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echo "$vendor_id" > /sys/bus/pci/drivers/vfio-pci/new_id 2>/dev/null
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pci_opts="-device vfio-pci,host=$pci_id"
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fi
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fi
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local cdrom_opts=""
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[ -n "$cdrom" ] && cdrom_opts="-cdrom $cdrom"
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local usb_controller_opts=""
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[ "$usb_needed" = "1" ] && usb_controller_opts="-device qemu-xhci,id=usb-bus0"
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local vnc_opts=""
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if [ "$display_type" = "vnc" ] && [ -n "$vnc_port" ]; then
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local vnc_display=$((vnc_port - 5900))
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local vnc_ws_port=$((vnc_port + 1000))
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if [ "$vnc_display" -ge 0 ] 2>/dev/null; then
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vnc_opts="-vnc :${vnc_display},websocket=${vnc_ws_port}"
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else
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logger -t qemu-vms "WARNING: VM '$cfg' has vnc_port=$vnc_port, which is below 5900. Skipping VNC."
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fi
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elif [ "$display_type" = "vnc" ]; then
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logger -t qemu-vms "WARNING: VM '$cfg' has display_type=vnc but no vnc_port set. Skipping VNC."
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fi
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local display_opts="-display none -nographic"
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[ -n "$vnc_opts" ] && display_opts=""
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#rm -f "$console_sock" "$qmp_sock"
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mkdir -p "$STATUS_DIR"
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mkdir -p "$(dirname "$console_log")"
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procd_open_instance "qemu-$cfg"
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procd_set_param command /usr/bin/qemu-system-x86_64 \
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-enable-kvm -cpu "$cpu" -smp "$smp" -m "${memory}M" \
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$disk_controller_opts $disk_opts \
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$device_opts $netdev_opts $pci_opts $cdrom_opts $usb_controller_opts $usb_opts $vnc_opts $custom_opts \
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-device virtio-rng-pci \
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-machine q35 \
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-chardev socket,id=con0,path="$console_sock",server=on,wait=off,logfile="$console_log",logappend=on \
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-serial chardev:con0 \
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-chardev socket,id=qmp0,path="$qmp_sock",server=on,wait=off \
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-qmp chardev:qmp0 \
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-monitor none $display_opts
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procd_set_param respawn 3600 5 5
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procd_set_param stdout 1
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procd_set_param stderr 1
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procd_set_param pidfile "$STATUS_DIR/$cfg.pid"
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procd_close_instance
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# NOTE: no persistent socat/console bridge here on purpose.
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# QEMU discards console output cleanly when nobody is connected to
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# console_sock (server=on,wait=off), while logfile= still captures
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# everything continuously (boot log never stalls). Interactive
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# access is attached on-demand via /usr/bin/vm-console, which only
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# connects for the duration of the minicom session.
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}
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start_service() {
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config_load qemu-vms
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if [ -n "$1" ]; then
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start_vm "$1"
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else
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config_foreach start_vm vm
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fi
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}
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service_triggers() {
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procd_add_reload_trigger "qemu-vms"
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}
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Executable
+22
@@ -0,0 +1,22 @@
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#!/bin/sh
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# /etc/qemu-ifup
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#
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# Invoked by QEMU itself (via -netdev tap,...,script=/etc/qemu-ifup) right
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# after it creates the tap interface. $1 is the tap ifname QEMU created;
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# $2 (bridge) is passed through via the netdev's "downscript"-adjacent
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# vhost/helper convention used by build_netargs in /etc/init.d/qemu-vms,
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# which appends the bridge name as a second positional argument.
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#
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# We only enslave the interface into a bridge if one was actually
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# configured on the network section - a tap interface with no "bridge"
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# option stays standalone (e.g. for point-to-point or manually managed
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# setups).
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ifname="$1"
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bridge="$2"
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ip link set "$ifname" up
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if [ -n "$bridge" ]; then
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ip link set "$ifname" master "$bridge"
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fi
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Executable
+61
@@ -0,0 +1,61 @@
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#!/bin/sh
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# vm-console <vm-name> [log|attach]
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#
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# attach (default): connects to the VM's QEMU console socket on demand,
|
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# bridges it to a temporary PTY via socat, launches minicom, and tears
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# the bridge down again on exit. QEMU only sees a client connected for
|
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# the duration of this session, so boot never stalls waiting for a
|
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# reader, and disconnecting minicom never backs up into QEMU.
|
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#
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# log: just tails the always-on boot/console logfile (safe to run at
|
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# any time, does not touch the live console socket at all).
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VM="$1"
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MODE="${2:-attach}"
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if [ -z "$VM" ]; then
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echo "Usage: vm-console <vm-name> [log|attach]" >&2
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exit 1
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fi
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CONSOLE_SOCK="/var/run/qemu-$VM.sock"
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CONSOLE_LOG="/var/log/qemu-$VM-console.log"
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TMP_PTY="/var/run/qemu-$VM.console-pty.$$"
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||||
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||||
case "$MODE" in
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log)
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||||
[ -f "$CONSOLE_LOG" ] || { echo "No logfile yet: $CONSOLE_LOG" >&2; exit 1; }
|
||||
exec tail -n 200 -f "$CONSOLE_LOG"
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||||
;;
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||||
attach)
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||||
[ -S "$CONSOLE_SOCK" ] || { echo "VM '$VM' is not running (no socket at $CONSOLE_SOCK)" >&2; exit 1; }
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||||
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||||
rm -f "$TMP_PTY"
|
||||
socat UNIX-CONNECT:"$CONSOLE_SOCK" PTY,link="$TMP_PTY",raw,echo=0 &
|
||||
SOCAT_PID=$!
|
||||
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||||
# give socat a moment to create the pty symlink
|
||||
for i in $(seq 1 20); do
|
||||
[ -e "$TMP_PTY" ] && break
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||||
sleep 0.1
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||||
done
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||||
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||||
if [ ! -e "$TMP_PTY" ]; then
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||||
echo "Failed to create console bridge for '$VM'" >&2
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||||
kill "$SOCAT_PID" 2>/dev/null
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exit 1
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||||
fi
|
||||
|
||||
cleanup() {
|
||||
kill "$SOCAT_PID" 2>/dev/null
|
||||
rm -f "$TMP_PTY"
|
||||
}
|
||||
trap cleanup EXIT INT TERM
|
||||
|
||||
minicom -D "$TMP_PTY"
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||||
;;
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||||
*)
|
||||
echo "Unknown mode: $MODE (expected 'log' or 'attach')" >&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
Reference in new issue
Block a user