#!/usr/bin/env python3 # Handle running OE images standalone with QEMU # # Copyright (C) 2006-2011 Linux Foundation # Copyright (c) 2016 Wind River Systems, Inc. # # SPDX-License-Identifier: GPL-2.0-only # import os import sys import logging import subprocess import re import fcntl import shutil import glob import configparser import signal class RunQemuError(Exception): """Custom exception to raise on known errors.""" pass class OEPathError(RunQemuError): """Custom Exception to give better guidance on missing binaries""" def __init__(self, message): super().__init__("In order for this script to dynamically infer paths\n \ kernels or filesystem images, you either need bitbake in your PATH\n \ or to source oe-init-build-env before running this script.\n\n \ Dynamic path inference can be avoided by passing a *.qemuboot.conf to\n \ runqemu, i.e. `runqemu /path/to/my-image-name.qemuboot.conf`\n\n %s" % message) def create_logger(): logger = logging.getLogger('runqemu') logger.setLevel(logging.INFO) # create console handler and set level to debug ch = logging.StreamHandler() ch.setLevel(logging.DEBUG) # create formatter formatter = logging.Formatter('%(name)s - %(levelname)s - %(message)s') # add formatter to ch ch.setFormatter(formatter) # add ch to logger logger.addHandler(ch) return logger logger = create_logger() def print_usage(): print(""" Usage: you can run this script with any valid combination of the following environment variables (in any order): KERNEL - the kernel image file to use BIOS - the bios image file to use ROOTFS - the rootfs image file or nfsroot directory to use DEVICE_TREE - the device tree blob to use MACHINE - the machine name (optional, autodetected from KERNEL filename if unspecified) Simplified QEMU command-line options can be passed with: nographic - disable video console sdl - choose the SDL UI frontend gtk - choose the Gtk UI frontend gl - enable virgl-based GL acceleration (also needs gtk or sdl options) gl-es - enable virgl-based GL acceleration, using OpenGL ES (also needs gtk or sdl options) egl-headless - enable headless EGL output; use vnc (via publicvnc option) or spice to see it serial - enable a serial console on /dev/ttyS0 serialstdio - enable a serial console on the console (regardless of graphics mode) slirp - enable user networking, no root privileges is required snapshot - don't write changes to back to images kvm - enable KVM when running x86/x86_64 (VT-capable CPU required) kvm-vhost - enable KVM with vhost when running x86/x86_64 (VT-capable CPU required) publicvnc - enable a VNC server open to all hosts audio - enable audio [*/]ovmf* - OVMF firmware file or base name for booting with UEFI tcpserial= - specify tcp serial port number qemuparams= - specify custom parameters to QEMU bootparams= - specify custom kernel parameters during boot help, -h, --help: print this text -d, --debug: Enable debug output -q, --quiet: Hide most output except error messages Examples: runqemu runqemu qemuarm runqemu tmp/deploy/images/qemuarm runqemu tmp/deploy/images/qemux86/ runqemu qemux86-64 core-image-sato ext4 runqemu qemux86-64 wic-image-minimal wic runqemu path/to/bzImage-qemux86.bin path/to/nfsrootdir/ serial runqemu qemux86 iso/hddimg/wic.vmdk/wic.qcow2/wic.vdi/ramfs/cpio.gz... runqemu qemux86 qemuparams="-m 256" runqemu qemux86 bootparams="psplash=false" runqemu path/to/-.wic runqemu path/to/-.wic.vmdk """) def check_tun(): """Check /dev/net/tun""" dev_tun = '/dev/net/tun' if not os.path.exists(dev_tun): raise RunQemuError("TUN control device %s is unavailable; you may need to enable TUN (e.g. sudo modprobe tun)" % dev_tun) if not os.access(dev_tun, os.W_OK): raise RunQemuError("TUN control device %s is not writable, please fix (e.g. sudo chmod 666 %s)" % (dev_tun, dev_tun)) def get_first_file(cmds): """Return first file found in wildcard cmds""" for cmd in cmds: all_files = glob.glob(cmd) if all_files: for f in all_files: if not os.path.isdir(f): return f return '' class BaseConfig(object): def __init__(self): # The self.d saved vars from self.set(), part of them are from qemuboot.conf self.d = {'QB_KERNEL_ROOT': '/dev/vda'} # Supported env vars, add it here if a var can be got from env, # and don't use os.getenv in the code. self.env_vars = ('MACHINE', 'ROOTFS', 'KERNEL', 'BIOS', 'DEVICE_TREE', 'DEPLOY_DIR_IMAGE', 'OE_TMPDIR', 'OECORE_NATIVE_SYSROOT', 'MULTICONFIG', ) self.qemu_opt = '' self.qemu_opt_script = '' self.qemuparams = '' self.clean_nfs_dir = False self.nfs_server = '' self.rootfs = '' # File name(s) of a OVMF firmware file or variable store, # to be added with -drive if=pflash. # Found in the same places as the rootfs, with or without one of # these suffices: qcow2, bin. self.ovmf_bios = [] # When enrolling default Secure Boot keys, the hypervisor # must provide the Platform Key and the first Key Exchange Key # certificate in the Type 11 SMBIOS table. self.ovmf_secboot_pkkek1 = '' self.qemuboot = '' self.qbconfload = False self.kernel = '' self.bios = '' self.kernel_cmdline = '' self.kernel_cmdline_script = '' self.bootparams = '' self.dtb = '' self.fstype = '' self.kvm_enabled = False self.vhost_enabled = False self.slirp_enabled = False self.net_bridge = None self.nfs_instance = 0 self.nfs_running = False self.serialconsole = False self.serialstdio = False self.cleantap = False self.saved_stty = '' self.audio_enabled = False self.tcpserial_portnum = '' self.taplock = '' self.taplock_descriptor = None self.portlocks = {} self.bitbake_e = '' self.snapshot = False self.wictypes = ('wic', 'wic.vmdk', 'wic.qcow2', 'wic.vdi') self.fstypes = ('ext2', 'ext3', 'ext4', 'jffs2', 'nfs', 'btrfs', 'cpio.gz', 'cpio', 'ramfs', 'tar.bz2', 'tar.gz') self.vmtypes = ('hddimg', 'iso') self.fsinfo = {} self.network_device = "-device e1000,netdev=net0,mac=@MAC@" self.cmdline_ip_slirp = "ip=dhcp" self.cmdline_ip_tap = "ip=192.168.7.@CLIENT@::192.168.7.@GATEWAY@:255.255.255.0" # Use different mac section for tap and slirp to avoid # conflicts, e.g., when one is running with tap, the other is # running with slirp. # The last section is dynamic, which is for avoiding conflicts, # when multiple qemus are running, e.g., when multiple tap or # slirp qemus are running. self.mac_tap = "52:54:00:12:34:" self.mac_slirp = "52:54:00:12:35:" # pid of the actual qemu process self.qemupid = None # avoid cleanup twice self.cleaned = False def acquire_taplock(self, error=True): logger.debug("Acquiring lockfile %s..." % self.taplock) try: self.taplock_descriptor = open(self.taplock, 'w') fcntl.flock(self.taplock_descriptor, fcntl.LOCK_EX|fcntl.LOCK_NB) except Exception as e: msg = "Acquiring lockfile %s failed: %s" % (self.taplock, e) if error: logger.error(msg) else: logger.info(msg) if self.taplock_descriptor: self.taplock_descriptor.close() self.taplock_descriptor = None return False return True def release_taplock(self): if self.taplock_descriptor: logger.debug("Releasing lockfile for tap device '%s'" % self.tap) fcntl.flock(self.taplock_descriptor, fcntl.LOCK_UN) self.taplock_descriptor.close() os.remove(self.taplock) self.taplock_descriptor = None def check_free_port(self, host, port, lockdir): """ Check whether the port is free or not """ import socket from contextlib import closing lockfile = os.path.join(lockdir, str(port) + '.lock') if self.acquire_portlock(lockfile): with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock: if sock.connect_ex((host, port)) == 0: # Port is open, so not free self.release_portlock(lockfile) return False else: # Port is not open, so free return True else: return False def acquire_portlock(self, lockfile): logger.debug("Acquiring lockfile %s..." % lockfile) try: portlock_descriptor = open(lockfile, 'w') self.portlocks.update({lockfile: portlock_descriptor}) fcntl.flock(self.portlocks[lockfile], fcntl.LOCK_EX|fcntl.LOCK_NB) except Exception as e: msg = "Acquiring lockfile %s failed: %s" % (lockfile, e) logger.info(msg) if lockfile in self.portlocks.keys() and self.portlocks[lockfile]: self.portlocks[lockfile].close() del self.portlocks[lockfile] return False return True def release_portlock(self, lockfile=None): if lockfile != None: logger.debug("Releasing lockfile '%s'" % lockfile) fcntl.flock(self.portlocks[lockfile], fcntl.LOCK_UN) self.portlocks[lockfile].close() os.remove(lockfile) del self.portlocks[lockfile] elif len(self.portlocks): for lockfile, descriptor in self.portlocks.items(): logger.debug("Releasing lockfile '%s'" % lockfile) fcntl.flock(descriptor, fcntl.LOCK_UN) descriptor.close() os.remove(lockfile) self.portlocks = {} def get(self, key): if key in self.d: return self.d.get(key) elif os.getenv(key): return os.getenv(key) else: return '' def set(self, key, value): self.d[key] = value def is_deploy_dir_image(self, p): if os.path.isdir(p): if not re.search('.qemuboot.conf$', '\n'.join(os.listdir(p)), re.M): logger.debug("Can't find required *.qemuboot.conf in %s" % p) return False if not any(map(lambda name: '-image-' in name, os.listdir(p))): logger.debug("Can't find *-image-* in %s" % p) return False return True else: return False def check_arg_fstype(self, fst): """Check and set FSTYPE""" if fst not in self.fstypes + self.vmtypes + self.wictypes: logger.warning("Maybe unsupported FSTYPE: %s" % fst) if not self.fstype or self.fstype == fst: if fst == 'ramfs': fst = 'cpio.gz' if fst in ('tar.bz2', 'tar.gz'): fst = 'nfs' self.fstype = fst else: raise RunQemuError("Conflicting: FSTYPE %s and %s" % (self.fstype, fst)) def set_machine_deploy_dir(self, machine, deploy_dir_image): """Set MACHINE and DEPLOY_DIR_IMAGE""" logger.debug('MACHINE: %s' % machine) self.set("MACHINE", machine) logger.debug('DEPLOY_DIR_IMAGE: %s' % deploy_dir_image) self.set("DEPLOY_DIR_IMAGE", deploy_dir_image) def check_arg_nfs(self, p): if os.path.isdir(p): self.rootfs = p else: m = re.match('(.*):(.*)', p) self.nfs_server = m.group(1) self.rootfs = m.group(2) self.check_arg_fstype('nfs') def check_arg_path(self, p): """ - Check whether it is .qemuboot.conf or contains .qemuboot.conf - Check whether is a kernel file - Check whether is a image file - Check whether it is a nfs dir - Check whether it is a OVMF flash file """ if p.endswith('.qemuboot.conf'): self.qemuboot = p self.qbconfload = True elif re.search('\.bin$', p) or re.search('bzImage', p) or \ re.search('zImage', p) or re.search('vmlinux', p) or \ re.search('fitImage', p) or re.search('uImage', p): self.kernel = p elif os.path.exists(p) and (not os.path.isdir(p)) and '-image-' in os.path.basename(p): self.rootfs = p # Check filename against self.fstypes can hanlde .cpio.gz, # otherwise, its type would be "gz", which is incorrect. fst = "" for t in self.fstypes: if p.endswith(t): fst = t break if not fst: m = re.search('.*\.(.*)$', self.rootfs) if m: fst = m.group(1) if fst: self.check_arg_fstype(fst) qb = re.sub('\.' + fst + "$", '', self.rootfs) qb = '%s%s' % (re.sub('\.rootfs$', '', qb), '.qemuboot.conf') if os.path.exists(qb): self.qemuboot = qb self.qbconfload = True else: logger.warning("%s doesn't exist" % qb) else: raise RunQemuError("Can't find FSTYPE from: %s" % p) elif os.path.isdir(p) or re.search(':', p) and re.search('/', p): if self.is_deploy_dir_image(p): logger.debug('DEPLOY_DIR_IMAGE: %s' % p) self.set("DEPLOY_DIR_IMAGE", p) else: logger.debug("Assuming %s is an nfs rootfs" % p) self.check_arg_nfs(p) elif os.path.basename(p).startswith('ovmf'): self.ovmf_bios.append(p) else: raise RunQemuError("Unknown path arg %s" % p) def check_arg_machine(self, arg): """Check whether it is a machine""" if self.get('MACHINE') == arg: return elif self.get('MACHINE') and self.get('MACHINE') != arg: raise RunQemuError("Maybe conflicted MACHINE: %s vs %s" % (self.get('MACHINE'), arg)) elif re.search('/', arg): raise RunQemuError("Unknown arg: %s" % arg) logger.debug('Assuming MACHINE = %s' % arg) # if we're running under testimage, or similarly as a child # of an existing bitbake invocation, we can't invoke bitbake # to validate the MACHINE setting and must assume it's correct... # FIXME: testimage.bbclass exports these two variables into env, # are there other scenarios in which we need to support being # invoked by bitbake? deploy = self.get('DEPLOY_DIR_IMAGE') bbchild = deploy and self.get('OE_TMPDIR') if bbchild: self.set_machine_deploy_dir(arg, deploy) return # also check whether we're running under a sourced toolchain # environment file if self.get('OECORE_NATIVE_SYSROOT'): self.set("MACHINE", arg) return self.bitbake_e = self.run_bitbake_env(arg) # bitbake -e doesn't report invalid MACHINE as an error, so # let's check DEPLOY_DIR_IMAGE to make sure that it is a valid # MACHINE. s = re.search('^DEPLOY_DIR_IMAGE="(.*)"', self.bitbake_e, re.M) if s: deploy_dir_image = s.group(1) else: raise RunQemuError("bitbake -e %s" % self.bitbake_e) if self.is_deploy_dir_image(deploy_dir_image): self.set_machine_deploy_dir(arg, deploy_dir_image) else: logger.error("%s not a directory valid DEPLOY_DIR_IMAGE" % deploy_dir_image) self.set("MACHINE", arg) def check_args(self): for debug in ("-d", "--debug"): if debug in sys.argv: logger.setLevel(logging.DEBUG) sys.argv.remove(debug) for quiet in ("-q", "--quiet"): if quiet in sys.argv: logger.setLevel(logging.ERROR) sys.argv.remove(quiet) unknown_arg = "" for arg in sys.argv[1:]: if arg in self.fstypes + self.vmtypes + self.wictypes: self.check_arg_fstype(arg) elif arg == 'nographic': self.qemu_opt_script += ' -nographic' self.kernel_cmdline_script += ' console=ttyS0' elif arg == 'sdl': if 'gl' in sys.argv[1:]: self.qemu_opt_script += ' -vga virtio -display sdl,gl=on' elif 'gl-es' in sys.argv[1:]: self.qemu_opt_script += ' -vga virtio -display sdl,gl=es' else: self.qemu_opt_script += ' -display sdl' elif arg == 'gtk': if 'gl' in sys.argv[1:]: self.qemu_opt_script += ' -vga virtio -display gtk,gl=on' elif 'gl-es' in sys.argv[1:]: self.qemu_opt_script += ' -vga virtio -display gtk,gl=es' else: self.qemu_opt_script += ' -display gtk' elif arg == 'gl' or arg == 'gl-es': # These args are handled inside sdl or gtk blocks above pass elif arg == 'egl-headless': self.qemu_opt_script += ' -vga virtio -display egl-headless' # As runqemu can be run within bitbake (when using testimage, for example), # we need to ensure that we run host pkg-config, and that it does not # get mis-directed to native build paths set by bitbake. try: del os.environ['PKG_CONFIG_PATH'] del os.environ['PKG_CONFIG_DIR'] del os.environ['PKG_CONFIG_LIBDIR'] del os.environ['PKG_CONFIG_SYSROOT_DIR'] except KeyError: pass try: dripath = subprocess.check_output("PATH=/bin:/usr/bin:$PATH pkg-config --variable=dridriverdir dri", shell=True) except subprocess.CalledProcessError as e: raise RunQemuError("Could not determine the path to dri drivers on the host via pkg-config.\nPlease install Mesa development files (particularly, dri.pc) on the host machine.") os.environ['LIBGL_DRIVERS_PATH'] = dripath.decode('utf-8').strip() elif arg == 'serial': self.kernel_cmdline_script += ' console=ttyS0' self.serialconsole = True elif arg == "serialstdio": self.kernel_cmdline_script += ' console=ttyS0' self.serialstdio = True elif arg == 'audio': logger.info("Enabling audio in qemu") logger.info("Please install sound drivers in linux host") self.audio_enabled = True elif arg == 'kvm': self.kvm_enabled = True elif arg == 'kvm-vhost': self.vhost_enabled = True elif arg == 'slirp': self.slirp_enabled = True elif arg.startswith('bridge='): self.net_bridge = '%s' % arg[len('bridge='):] elif arg == 'snapshot': self.snapshot = True elif arg == 'publicvnc': self.qemu_opt_script += ' -vnc :0' elif arg.startswith('tcpserial='): self.tcpserial_portnum = '%s' % arg[len('tcpserial='):] elif arg.startswith('qemuparams='): self.qemuparams = ' %s' % arg[len('qemuparams='):] elif arg.startswith('bootparams='): self.bootparams = arg[len('bootparams='):] elif os.path.exists(arg) or (re.search(':', arg) and re.search('/', arg)): self.check_arg_path(os.path.abspath(arg)) elif re.search(r'-image-|-image$', arg): # Lazy rootfs self.rootfs = arg elif arg.startswith('ovmf'): self.ovmf_bios.append(arg) else: # At last, assume it is the MACHINE if (not unknown_arg) or unknown_arg == arg: unknown_arg = arg else: raise RunQemuError("Can't handle two unknown args: %s %s\n" "Try 'runqemu help' on how to use it" % \ (unknown_arg, arg)) # Check to make sure it is a valid machine if unknown_arg and self.get('MACHINE') != unknown_arg: if self.get('DEPLOY_DIR_IMAGE'): machine = os.path.basename(self.get('DEPLOY_DIR_IMAGE')) if unknown_arg == machine: self.set("MACHINE", machine) self.check_arg_machine(unknown_arg) if not (self.get('DEPLOY_DIR_IMAGE') or self.qbconfload): self.load_bitbake_env() s = re.search('^DEPLOY_DIR_IMAGE="(.*)"', self.bitbake_e, re.M) if s: self.set("DEPLOY_DIR_IMAGE", s.group(1)) def check_kvm(self): """Check kvm and kvm-host""" if not (self.kvm_enabled or self.vhost_enabled): self.qemu_opt_script += ' %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU')) return if not self.get('QB_CPU_KVM'): raise RunQemuError("QB_CPU_KVM is NULL, this board doesn't support kvm") self.qemu_opt_script += ' %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU_KVM')) yocto_kvm_wiki = "https://wiki.yoctoproject.org/wiki/How_to_enable_KVM_for_Poky_qemu" yocto_paravirt_kvm_wiki = "https://wiki.yoctoproject.org/wiki/Running_an_x86_Yocto_Linux_image_under_QEMU_KVM" dev_kvm = '/dev/kvm' dev_vhost = '/dev/vhost-net' if self.qemu_system.endswith(('i386', 'x86_64')): with open('/proc/cpuinfo', 'r') as f: kvm_cap = re.search('vmx|svm', "".join(f.readlines())) if not kvm_cap: logger.error("You are trying to enable KVM on a cpu without VT support.") logger.error("Remove kvm from the command-line, or refer:") raise RunQemuError(yocto_kvm_wiki) if not os.path.exists(dev_kvm): logger.error("Missing KVM device. Have you inserted kvm modules?") logger.error("For further help see:") raise RunQemuError(yocto_kvm_wiki) if os.access(dev_kvm, os.W_OK|os.R_OK): self.qemu_opt_script += ' -enable-kvm' if self.get('MACHINE') == "qemux86": # Workaround for broken APIC window on pre 4.15 host kernels which causes boot hangs # See YOCTO #12301 # On 64 bit we use x2apic self.kernel_cmdline_script += " clocksource=kvm-clock hpet=disable noapic nolapic" else: logger.error("You have no read or write permission on /dev/kvm.") logger.error("Please change the ownership of this file as described at:") raise RunQemuError(yocto_kvm_wiki) if self.vhost_enabled: if not os.path.exists(dev_vhost): logger.error("Missing virtio net device. Have you inserted vhost-net module?") logger.error("For further help see:") raise RunQemuError(yocto_paravirt_kvm_wiki) if not os.access(dev_kvm, os.W_OK|os.R_OK): logger.error("You have no read or write permission on /dev/vhost-net.") logger.error("Please change the ownership of this file as described at:") raise RunQemuError(yocto_kvm_wiki) def check_fstype(self): """Check and setup FSTYPE""" if not self.fstype: fstype = self.get('QB_DEFAULT_FSTYPE') if fstype: self.fstype = fstype else: raise RunQemuError("FSTYPE is NULL!") # parse QB_FSINFO into dict, e.g. { 'wic': ['no-kernel-in-fs', 'a-flag'], 'ext4': ['another-flag']} wic_fs = False qb_fsinfo = self.get('QB_FSINFO') if qb_fsinfo: qb_fsinfo = qb_fsinfo.split() for fsinfo in qb_fsinfo: try: fstype, fsflag = fsinfo.split(':') if fstype == 'wic': if fsflag == 'no-kernel-in-fs': wic_fs = True elif fsflag == 'kernel-in-fs': wic_fs = False else: logger.warn('Unknown flag "%s:%s" in QB_FSINFO', fstype, fsflag) continue else: logger.warn('QB_FSINFO is not supported for image type "%s"', fstype) continue if fstype in self.fsinfo: self.fsinfo[fstype].append(fsflag) else: self.fsinfo[fstype] = [fsflag] except Exception: logger.error('Invalid parameter "%s" in QB_FSINFO', fsinfo) # treat wic images as vmimages (with kernel) or as fsimages (rootfs only) if wic_fs: self.fstypes = self.fstypes + self.wictypes else: self.vmtypes = self.vmtypes + self.wictypes def check_rootfs(self): """Check and set rootfs""" if self.fstype == "none": return if self.get('ROOTFS'): if not self.rootfs: self.rootfs = self.get('ROOTFS') elif self.get('ROOTFS') != self.rootfs: raise RunQemuError("Maybe conflicted ROOTFS: %s vs %s" % (self.get('ROOTFS'), self.rootfs)) if self.fstype == 'nfs': return if self.rootfs and not os.path.exists(self.rootfs): # Lazy rootfs self.rootfs = "%s/%s-%s.%s" % (self.get('DEPLOY_DIR_IMAGE'), self.rootfs, self.get('MACHINE'), self.fstype) elif not self.rootfs: cmd_name = '%s/%s*.%s' % (self.get('DEPLOY_DIR_IMAGE'), self.get('IMAGE_NAME'), self.fstype) cmd_link = '%s/%s*.%s' % (self.get('DEPLOY_DIR_IMAGE'), self.get('IMAGE_LINK_NAME'), self.fstype) cmds = (cmd_name, cmd_link) self.rootfs = get_first_file(cmds) if not self.rootfs: raise RunQemuError("Failed to find rootfs: %s or %s" % cmds) if not os.path.exists(self.rootfs): raise RunQemuError("Can't find rootfs: %s" % self.rootfs) def setup_pkkek1(self): """ Extract from PEM certificate the Platform Key and first Key Exchange Key certificate string. The hypervisor needs to provide it in the Type 11 SMBIOS table """ pemcert = '%s/%s' % (self.get('DEPLOY_DIR_IMAGE'), 'OvmfPkKek1.pem') try: with open(pemcert, 'r') as pemfile: key = pemfile.read().replace('\n', ''). \ replace('-----BEGIN CERTIFICATE-----', ''). \ replace('-----END CERTIFICATE-----', '') self.ovmf_secboot_pkkek1 = key except FileNotFoundError: raise RunQemuError("Can't open PEM certificate %s " % pemcert) def check_ovmf(self): """Check and set full path for OVMF firmware and variable file(s).""" for index, ovmf in enumerate(self.ovmf_bios): if os.path.exists(ovmf): continue for suffix in ('qcow2', 'bin'): path = '%s/%s.%s' % (self.get('DEPLOY_DIR_IMAGE'), ovmf, suffix) if os.path.exists(path): self.ovmf_bios[index] = path if ovmf.endswith('secboot'): self.setup_pkkek1() break else: raise RunQemuError("Can't find OVMF firmware: %s" % ovmf) def check_kernel(self): """Check and set kernel""" # The vm image doesn't need a kernel if self.fstype in self.vmtypes: return # See if the user supplied a KERNEL option if self.get('KERNEL'): self.kernel = self.get('KERNEL') # QB_DEFAULT_KERNEL is always a full file path kernel_name = os.path.basename(self.get('QB_DEFAULT_KERNEL')) # The user didn't want a kernel to be loaded if kernel_name == "none" and not self.kernel: return deploy_dir_image = self.get('DEPLOY_DIR_IMAGE') if not self.kernel: kernel_match_name = "%s/%s" % (deploy_dir_image, kernel_name) kernel_match_link = "%s/%s" % (deploy_dir_image, self.get('KERNEL_IMAGETYPE')) kernel_startswith = "%s/%s*" % (deploy_dir_image, self.get('KERNEL_IMAGETYPE')) cmds = (kernel_match_name, kernel_match_link, kernel_startswith) self.kernel = get_first_file(cmds) if not self.kernel: raise RunQemuError('KERNEL not found: %s, %s or %s' % cmds) if not os.path.exists(self.kernel): raise RunQemuError("KERNEL %s not found" % self.kernel) def check_dtb(self): """Check and set dtb""" # Did the user specify a device tree? if self.get('DEVICE_TREE'): self.dtb = self.get('DEVICE_TREE') if not os.path.exists(self.dtb): raise RunQemuError('Specified DTB not found: %s' % self.dtb) return dtb = self.get('QB_DTB') if dtb: deploy_dir_image = self.get('DEPLOY_DIR_IMAGE') cmd_match = "%s/%s" % (deploy_dir_image, dtb) cmd_startswith = "%s/%s*" % (deploy_dir_image, dtb) cmd_wild = "%s/*.dtb" % deploy_dir_image cmds = (cmd_match, cmd_startswith, cmd_wild) self.dtb = get_first_file(cmds) if not os.path.exists(self.dtb): raise RunQemuError('DTB not found: %s, %s or %s' % cmds) def check_bios(self): """Check and set bios""" # See if the user supplied a BIOS option if self.get('BIOS'): self.bios = self.get('BIOS') # QB_DEFAULT_BIOS is always a full file path bios_name = os.path.basename(self.get('QB_DEFAULT_BIOS')) # The user didn't want a bios to be loaded if (bios_name == "" or bios_name == "none") and not self.bios: return if not self.bios: deploy_dir_image = self.get('DEPLOY_DIR_IMAGE') self.bios = "%s/%s" % (deploy_dir_image, bios_name) if not self.bios: raise RunQemuError('BIOS not found: %s' % bios_match_name) if not os.path.exists(self.bios): raise RunQemuError("KERNEL %s not found" % self.bios) def check_mem(self): """ Both qemu and kernel needs memory settings, so check QB_MEM and set it for both. """ s = re.search('-m +([0-9]+)', self.qemuparams) if s: self.set('QB_MEM', '-m %s' % s.group(1)) elif not self.get('QB_MEM'): logger.info('QB_MEM is not set, use 256M by default') self.set('QB_MEM', '-m 256') # Check and remove M or m suffix qb_mem = self.get('QB_MEM') if qb_mem.endswith('M') or qb_mem.endswith('m'): qb_mem = qb_mem[:-1] # Add -m prefix it not present if not qb_mem.startswith('-m'): qb_mem = '-m %s' % qb_mem self.set('QB_MEM', qb_mem) mach = self.get('MACHINE') if not mach.startswith('qemumips'): self.kernel_cmdline_script += ' mem=%s' % self.get('QB_MEM').replace('-m','').strip() + 'M' self.qemu_opt_script += ' %s' % self.get('QB_MEM') def check_tcpserial(self): if self.tcpserial_portnum: ports = self.tcpserial_portnum.split(':') port = ports[0] if self.get('QB_TCPSERIAL_OPT'): self.qemu_opt_script += ' ' + self.get('QB_TCPSERIAL_OPT').replace('@PORT@', port) else: self.qemu_opt_script += ' -serial tcp:127.0.0.1:%s' % port if len(ports) > 1: for port in ports[1:]: self.qemu_opt_script += ' -serial tcp:127.0.0.1:%s' % port def check_and_set(self): """Check configs sanity and set when needed""" self.validate_paths() if not self.slirp_enabled and not self.net_bridge: check_tun() # Check audio if self.audio_enabled: if not self.get('QB_AUDIO_DRV'): raise RunQemuError("QB_AUDIO_DRV is NULL, this board doesn't support audio") if not self.get('QB_AUDIO_OPT'): logger.warning('QB_AUDIO_OPT is NULL, you may need define it to make audio work') else: self.qemu_opt_script += ' %s' % self.get('QB_AUDIO_OPT') os.putenv('QEMU_AUDIO_DRV', self.get('QB_AUDIO_DRV')) else: os.putenv('QEMU_AUDIO_DRV', 'none') self.check_qemu_system() self.check_kvm() self.check_fstype() self.check_rootfs() self.check_ovmf() self.check_kernel() self.check_dtb() self.check_bios() self.check_mem() self.check_tcpserial() def read_qemuboot(self): if not self.qemuboot: if self.get('DEPLOY_DIR_IMAGE'): deploy_dir_image = self.get('DEPLOY_DIR_IMAGE') else: logger.warning("Can't find qemuboot conf file, DEPLOY_DIR_IMAGE is NULL!") return if self.rootfs and not os.path.exists(self.rootfs): # Lazy rootfs machine = self.get('MACHINE') if not machine: machine = os.path.basename(deploy_dir_image) self.qemuboot = "%s/%s-%s.qemuboot.conf" % (deploy_dir_image, self.rootfs, machine) else: cmd = 'ls -t %s/*.qemuboot.conf' % deploy_dir_image logger.debug('Running %s...' % cmd) try: qbs = subprocess.check_output(cmd, shell=True).decode('utf-8') except subprocess.CalledProcessError as err: raise RunQemuError(err) if qbs: for qb in qbs.split(): # Don't use initramfs when other choices unless fstype is ramfs if '-initramfs-' in os.path.basename(qb) and self.fstype != 'cpio.gz': continue self.qemuboot = qb break if not self.qemuboot: # Use the first one when no choice self.qemuboot = qbs.split()[0] self.qbconfload = True if not self.qemuboot: # If we haven't found a .qemuboot.conf at this point it probably # doesn't exist, continue without return if not os.path.exists(self.qemuboot): raise RunQemuError("Failed to find %s (wrong image name or BSP does not support running under qemu?)." % self.qemuboot) logger.debug('CONFFILE: %s' % self.qemuboot) cf = configparser.ConfigParser() cf.read(self.qemuboot) for k, v in cf.items('config_bsp'): k_upper = k.upper() if v.startswith("../"): v = os.path.abspath(os.path.dirname(self.qemuboot) + "/" + v) elif v == ".": v = os.path.dirname(self.qemuboot) self.set(k_upper, v) def validate_paths(self): """Ensure all relevant path variables are set""" # When we're started with a *.qemuboot.conf arg assume that image # artefacts are relative to that file, rather than in whatever # directory DEPLOY_DIR_IMAGE in the conf file points to. if self.qbconfload: imgdir = os.path.realpath(os.path.dirname(self.qemuboot)) if imgdir != os.path.realpath(self.get('DEPLOY_DIR_IMAGE')): logger.info('Setting DEPLOY_DIR_IMAGE to folder containing %s (%s)' % (self.qemuboot, imgdir)) self.set('DEPLOY_DIR_IMAGE', imgdir) # If the STAGING_*_NATIVE directories from the config file don't exist # and we're in a sourced OE build directory try to extract the paths # from `bitbake -e` havenative = os.path.exists(self.get('STAGING_DIR_NATIVE')) and \ os.path.exists(self.get('STAGING_BINDIR_NATIVE')) if not havenative: if not self.bitbake_e: self.load_bitbake_env() if self.bitbake_e: native_vars = ['STAGING_DIR_NATIVE'] for nv in native_vars: s = re.search('^%s="(.*)"' % nv, self.bitbake_e, re.M) if s and s.group(1) != self.get(nv): logger.info('Overriding conf file setting of %s to %s from Bitbake environment' % (nv, s.group(1))) self.set(nv, s.group(1)) else: # when we're invoked from a running bitbake instance we won't # be able to call `bitbake -e`, then try: # - get OE_TMPDIR from environment and guess paths based on it # - get OECORE_NATIVE_SYSROOT from environment (for sdk) tmpdir = self.get('OE_TMPDIR') oecore_native_sysroot = self.get('OECORE_NATIVE_SYSROOT') if tmpdir: logger.info('Setting STAGING_DIR_NATIVE and STAGING_BINDIR_NATIVE relative to OE_TMPDIR (%s)' % tmpdir) hostos, _, _, _, machine = os.uname() buildsys = '%s-%s' % (machine, hostos.lower()) staging_dir_native = '%s/sysroots/%s' % (tmpdir, buildsys) self.set('STAGING_DIR_NATIVE', staging_dir_native) elif oecore_native_sysroot: logger.info('Setting STAGING_DIR_NATIVE to OECORE_NATIVE_SYSROOT (%s)' % oecore_native_sysroot) self.set('STAGING_DIR_NATIVE', oecore_native_sysroot) if self.get('STAGING_DIR_NATIVE'): # we have to assume that STAGING_BINDIR_NATIVE is at usr/bin staging_bindir_native = '%s/usr/bin' % self.get('STAGING_DIR_NATIVE') logger.info('Setting STAGING_BINDIR_NATIVE to %s' % staging_bindir_native) self.set('STAGING_BINDIR_NATIVE', '%s/usr/bin' % self.get('STAGING_DIR_NATIVE')) def print_config(self): logoutput = ['Continuing with the following parameters:'] if not self.fstype in self.vmtypes: logoutput.append('KERNEL: [%s]' % self.kernel) if self.bios: logoutput.append('BIOS: [%s]' % self.bios) if self.dtb: logoutput.append('DTB: [%s]' % self.dtb) logoutput.append('MACHINE: [%s]' % self.get('MACHINE')) try: fstype_flags = ' (' + ', '.join(self.fsinfo[self.fstype]) + ')' except KeyError: fstype_flags = '' logoutput.append('FSTYPE: [%s%s]' % (self.fstype, fstype_flags)) if self.fstype == 'nfs': logoutput.append('NFS_DIR: [%s]' % self.rootfs) else: logoutput.append('ROOTFS: [%s]' % self.rootfs) if self.ovmf_bios: logoutput.append('OVMF: %s' % self.ovmf_bios) if (self.ovmf_secboot_pkkek1): logoutput.append('SECBOOT PKKEK1: [%s...]' % self.ovmf_secboot_pkkek1[0:100]) logoutput.append('CONFFILE: [%s]' % self.qemuboot) logoutput.append('') logger.info('\n'.join(logoutput)) def setup_nfs(self): if not self.nfs_server: if self.slirp_enabled: self.nfs_server = '10.0.2.2' else: self.nfs_server = '192.168.7.1' # Figure out a new nfs_instance to allow multiple qemus running. ps = subprocess.check_output(("ps", "auxww")).decode('utf-8') pattern = '/bin/unfsd .* -i .*\.pid -e .*/exports([0-9]+) ' all_instances = re.findall(pattern, ps, re.M) if all_instances: all_instances.sort(key=int) self.nfs_instance = int(all_instances.pop()) + 1 nfsd_port = 3049 + 2 * self.nfs_instance mountd_port = 3048 + 2 * self.nfs_instance # Export vars for runqemu-export-rootfs export_dict = { 'NFS_INSTANCE': self.nfs_instance, 'NFSD_PORT': nfsd_port, 'MOUNTD_PORT': mountd_port, } for k, v in export_dict.items(): # Use '%s' since they are integers os.putenv(k, '%s' % v) self.unfs_opts="nfsvers=3,port=%s,tcp,mountport=%s" % (nfsd_port, mountd_port) # Extract .tar.bz2 or .tar.bz if no nfs dir if not (self.rootfs and os.path.isdir(self.rootfs)): src_prefix = '%s/%s' % (self.get('DEPLOY_DIR_IMAGE'), self.get('IMAGE_LINK_NAME')) dest = "%s-nfsroot" % src_prefix if os.path.exists('%s.pseudo_state' % dest): logger.info('Use %s as NFS_DIR' % dest) self.rootfs = dest else: src = "" src1 = '%s.tar.bz2' % src_prefix src2 = '%s.tar.gz' % src_prefix if os.path.exists(src1): src = src1 elif os.path.exists(src2): src = src2 if not src: raise RunQemuError("No NFS_DIR is set, and can't find %s or %s to extract" % (src1, src2)) logger.info('NFS_DIR not found, extracting %s to %s' % (src, dest)) cmd = ('runqemu-extract-sdk', src, dest) logger.info('Running %s...' % str(cmd)) if subprocess.call(cmd) != 0: raise RunQemuError('Failed to run %s' % cmd) self.clean_nfs_dir = True self.rootfs = dest # Start the userspace NFS server cmd = ('runqemu-export-rootfs', 'start', self.rootfs) logger.info('Running %s...' % str(cmd)) if subprocess.call(cmd) != 0: raise RunQemuError('Failed to run %s' % cmd) self.nfs_running = True def setup_net_bridge(self): self.set('NETWORK_CMD', '-netdev bridge,br=%s,id=net0,helper=%s -device virtio-net-pci,netdev=net0 ' % ( self.net_bridge, os.path.join(self.bindir_native, 'qemu-oe-bridge-helper'))) def setup_slirp(self): """Setup user networking""" if self.fstype == 'nfs': self.setup_nfs() netconf = " " + self.cmdline_ip_slirp logger.info("Network configuration:%s", netconf) self.kernel_cmdline_script += netconf # Port mapping hostfwd = ",hostfwd=tcp::2222-:22,hostfwd=tcp::2323-:23" qb_slirp_opt_default = "-netdev user,id=net0%s,tftp=%s" % (hostfwd, self.get('DEPLOY_DIR_IMAGE')) qb_slirp_opt = self.get('QB_SLIRP_OPT') or qb_slirp_opt_default # Figure out the port ports = re.findall('hostfwd=[^-]*:([0-9]+)-[^,-]*', qb_slirp_opt) ports = [int(i) for i in ports] mac = 2 lockdir = "/tmp/qemu-port-locks" if not os.path.exists(lockdir): # There might be a race issue when multi runqemu processess are # running at the same time. try: os.mkdir(lockdir) os.chmod(lockdir, 0o777) except FileExistsError: pass # Find a free port to avoid conflicts for p in ports[:]: p_new = p while not self.check_free_port('localhost', p_new, lockdir): p_new += 1 mac += 1 while p_new in ports: p_new += 1 mac += 1 if p != p_new: ports.append(p_new) qb_slirp_opt = re.sub(':%s-' % p, ':%s-' % p_new, qb_slirp_opt) logger.info("Port forward changed: %s -> %s" % (p, p_new)) mac = "%s%02x" % (self.mac_slirp, mac) self.set('NETWORK_CMD', '%s %s' % (self.network_device.replace('@MAC@', mac), qb_slirp_opt)) # Print out port foward hostfwd = re.findall('(hostfwd=[^,]*)', qb_slirp_opt) if hostfwd: logger.info('Port forward: %s' % ' '.join(hostfwd)) def setup_tap(self): """Setup tap""" # This file is created when runqemu-gen-tapdevs creates a bank of tap # devices, indicating that the user should not bring up new ones using # sudo. nosudo_flag = '/etc/runqemu-nosudo' self.qemuifup = shutil.which('runqemu-ifup') self.qemuifdown = shutil.which('runqemu-ifdown') ip = shutil.which('ip') lockdir = "/tmp/qemu-tap-locks" if not (self.qemuifup and self.qemuifdown and ip): logger.error("runqemu-ifup: %s" % self.qemuifup) logger.error("runqemu-ifdown: %s" % self.qemuifdown) logger.error("ip: %s" % ip) raise OEPathError("runqemu-ifup, runqemu-ifdown or ip not found") if not os.path.exists(lockdir): # There might be a race issue when multi runqemu processess are # running at the same time. try: os.mkdir(lockdir) os.chmod(lockdir, 0o777) except FileExistsError: pass cmd = (ip, 'link') logger.debug('Running %s...' % str(cmd)) ip_link = subprocess.check_output(cmd).decode('utf-8') # Matches line like: 6: tap0: possibles = re.findall('^[0-9]+: +(tap[0-9]+): <.*', ip_link, re.M) tap = "" for p in possibles: lockfile = os.path.join(lockdir, p) if os.path.exists('%s.skip' % lockfile): logger.info('Found %s.skip, skipping %s' % (lockfile, p)) continue self.taplock = lockfile + '.lock' if self.acquire_taplock(error=False): tap = p logger.info("Using preconfigured tap device %s" % tap) logger.info("If this is not intended, touch %s.skip to make runqemu skip %s." %(lockfile, tap)) break if not tap: if os.path.exists(nosudo_flag): logger.error("Error: There are no available tap devices to use for networking,") logger.error("and I see %s exists, so I am not going to try creating" % nosudo_flag) raise RunQemuError("a new one with sudo.") gid = os.getgid() uid = os.getuid() logger.info("Setting up tap interface under sudo") cmd = ('sudo', self.qemuifup, str(uid), str(gid), self.bindir_native) try: tap = subprocess.check_output(cmd).decode('utf-8').strip() except subprocess.CalledProcessError as e: logger.error('Setting up tap device failed:\n%s\nRun runqemu-gen-tapdevs to manually create one.' % str(e)) sys.exit(1) lockfile = os.path.join(lockdir, tap) self.taplock = lockfile + '.lock' self.acquire_taplock() self.cleantap = True logger.debug('Created tap: %s' % tap) if not tap: logger.error("Failed to setup tap device. Run runqemu-gen-tapdevs to manually create.") sys.exit(1) self.tap = tap tapnum = int(tap[3:]) gateway = tapnum * 2 + 1 client = gateway + 1 if self.fstype == 'nfs': self.setup_nfs() netconf = " " + self.cmdline_ip_tap netconf = netconf.replace('@CLIENT@', str(client)) netconf = netconf.replace('@GATEWAY@', str(gateway)) logger.info("Network configuration:%s", netconf) self.kernel_cmdline_script += netconf mac = "%s%02x" % (self.mac_tap, client) qb_tap_opt = self.get('QB_TAP_OPT') if qb_tap_opt: qemu_tap_opt = qb_tap_opt.replace('@TAP@', tap) else: qemu_tap_opt = "-netdev tap,id=net0,ifname=%s,script=no,downscript=no" % (self.tap) if self.vhost_enabled: qemu_tap_opt += ',vhost=on' self.set('NETWORK_CMD', '%s %s' % (self.network_device.replace('@MAC@', mac), qemu_tap_opt)) def setup_network(self): if self.get('QB_NET') == 'none': return if sys.stdin.isatty(): self.saved_stty = subprocess.check_output(("stty", "-g")).decode('utf-8').strip() self.network_device = self.get('QB_NETWORK_DEVICE') or self.network_device if self.net_bridge: self.setup_net_bridge() elif self.slirp_enabled: self.cmdline_ip_slirp = self.get('QB_CMDLINE_IP_SLIRP') or self.cmdline_ip_slirp self.setup_slirp() else: self.cmdline_ip_tap = self.get('QB_CMDLINE_IP_TAP') or self.cmdline_ip_tap self.setup_tap() def setup_rootfs(self): if self.get('QB_ROOTFS') == 'none': return if 'wic.' in self.fstype: self.fstype = self.fstype[4:] rootfs_format = self.fstype if self.fstype in ('vmdk', 'qcow2', 'vdi') else 'raw' qb_rootfs_opt = self.get('QB_ROOTFS_OPT') if qb_rootfs_opt: self.rootfs_options = qb_rootfs_opt.replace('@ROOTFS@', self.rootfs) else: self.rootfs_options = '-drive file=%s,if=virtio,format=%s' % (self.rootfs, rootfs_format) qb_rootfs_extra_opt = self.get("QB_ROOTFS_EXTRA_OPT") if qb_rootfs_extra_opt and not qb_rootfs_extra_opt.startswith(","): qb_rootfs_extra_opt = "," + qb_rootfs_extra_opt if self.fstype in ('cpio.gz', 'cpio'): self.kernel_cmdline = 'root=/dev/ram0 rw debugshell' self.rootfs_options = '-initrd %s' % self.rootfs else: vm_drive = '' if self.fstype in self.vmtypes: if self.fstype == 'iso': vm_drive = '-drive file=%s,if=virtio,media=cdrom' % self.rootfs elif self.get('QB_DRIVE_TYPE'): drive_type = self.get('QB_DRIVE_TYPE') if drive_type.startswith("/dev/sd"): logger.info('Using scsi drive') vm_drive = '-drive if=none,id=hd,file=%s,format=%s -device virtio-scsi-pci,id=scsi -device scsi-hd,drive=hd%s' \ % (self.rootfs, rootfs_format, qb_rootfs_extra_opt) elif drive_type.startswith("/dev/hd"): logger.info('Using ide drive') vm_drive = "-drive file=%s,format=%s" % (self.rootfs, rootfs_format) elif drive_type.startswith("/dev/vdb"): logger.info('Using block virtio drive'); vm_drive = '-drive id=disk0,file=%s,if=none,format=%s -device virtio-blk-device,drive=disk0%s' \ % (self.rootfs, rootfs_format,qb_rootfs_extra_opt) else: # virtio might have been selected explicitly (just use it), or # is used as fallback (then warn about that). if not drive_type.startswith("/dev/vd"): logger.warning("Unknown QB_DRIVE_TYPE: %s" % drive_type) logger.warning("Failed to figure out drive type, consider define or fix QB_DRIVE_TYPE") logger.warning('Trying to use virtio block drive') vm_drive = '-drive if=virtio,file=%s,format=%s' % (self.rootfs, rootfs_format) # All branches above set vm_drive. self.rootfs_options = '%s -no-reboot' % vm_drive self.kernel_cmdline = 'root=%s rw' % (self.get('QB_KERNEL_ROOT')) if self.fstype == 'nfs': self.rootfs_options = '' k_root = '/dev/nfs nfsroot=%s:%s,%s' % (self.nfs_server, os.path.abspath(self.rootfs), self.unfs_opts) self.kernel_cmdline = 'root=%s rw' % k_root if self.fstype == 'none': self.rootfs_options = '' self.set('ROOTFS_OPTIONS', self.rootfs_options) def guess_qb_system(self): """attempt to determine the appropriate qemu-system binary""" mach = self.get('MACHINE') if not mach: search = '.*(qemux86-64|qemux86|qemuarm64|qemuarm|qemumips64|qemumips64el|qemumipsel|qemumips|qemuppc).*' if self.rootfs: match = re.match(search, self.rootfs) if match: mach = match.group(1) elif self.kernel: match = re.match(search, self.kernel) if match: mach = match.group(1) if not mach: return None if mach == 'qemuarm': qbsys = 'arm' elif mach == 'qemuarm64': qbsys = 'aarch64' elif mach == 'qemux86': qbsys = 'i386' elif mach == 'qemux86-64': qbsys = 'x86_64' elif mach == 'qemuppc': qbsys = 'ppc' elif mach == 'qemumips': qbsys = 'mips' elif mach == 'qemumips64': qbsys = 'mips64' elif mach == 'qemumipsel': qbsys = 'mipsel' elif mach == 'qemumips64el': qbsys = 'mips64el' elif mach == 'qemuriscv64': qbsys = 'riscv64' elif mach == 'qemuriscv32': qbsys = 'riscv32' else: logger.error("Unable to determine QEMU PC System emulator for %s machine." % mach) logger.error("As %s is not among valid QEMU machines such as," % mach) logger.error("qemux86-64, qemux86, qemuarm64, qemuarm, qemumips64, qemumips64el, qemumipsel, qemumips, qemuppc") raise RunQemuError("Set qb_system_name with suitable QEMU PC System emulator in .*qemuboot.conf.") return 'qemu-system-%s' % qbsys def check_qemu_system(self): qemu_system = self.get('QB_SYSTEM_NAME') if not qemu_system: qemu_system = self.guess_qb_system() if not qemu_system: raise RunQemuError("Failed to boot, QB_SYSTEM_NAME is NULL!") self.qemu_system = qemu_system def setup_final(self): qemu_bin = os.path.join(self.bindir_native, self.qemu_system) # It is possible to have qemu-native in ASSUME_PROVIDED, and it won't # find QEMU in sysroot, it needs to use host's qemu. if not os.path.exists(qemu_bin): logger.info("QEMU binary not found in %s, trying host's QEMU" % qemu_bin) for path in (os.environ['PATH'] or '').split(':'): qemu_bin_tmp = os.path.join(path, self.qemu_system) logger.info("Trying: %s" % qemu_bin_tmp) if os.path.exists(qemu_bin_tmp): qemu_bin = qemu_bin_tmp if not os.path.isabs(qemu_bin): qemu_bin = os.path.abspath(qemu_bin) logger.info("Using host's QEMU: %s" % qemu_bin) break if not os.access(qemu_bin, os.X_OK): raise OEPathError("No QEMU binary '%s' could be found" % qemu_bin) self.qemu_opt = "%s %s %s %s" % (qemu_bin, self.get('NETWORK_CMD'), self.get('ROOTFS_OPTIONS'), self.get('QB_OPT_APPEND')) for ovmf in self.ovmf_bios: format = ovmf.rsplit('.', 1)[-1] self.qemu_opt += ' -drive if=pflash,format=%s,file=%s' % (format, ovmf) self.qemu_opt += ' ' + self.qemu_opt_script if self.ovmf_secboot_pkkek1: # Provide the Platform Key and first Key Exchange Key certificate as an # OEM string in the SMBIOS Type 11 table. Prepend the certificate string # with "application prefix" of the EnrollDefaultKeys.efi application self.qemu_opt += ' -smbios type=11,value=4e32566d-8e9e-4f52-81d3-5bb9715f9727:' \ + self.ovmf_secboot_pkkek1 # Append qemuparams to override previous settings if self.qemuparams: self.qemu_opt += ' ' + self.qemuparams if self.snapshot: self.qemu_opt += " -snapshot" if self.serialconsole: if sys.stdin.isatty(): subprocess.check_call(("stty", "intr", "^]")) logger.info("Interrupt character is '^]'") first_serial = "" if not re.search("-nographic", self.qemu_opt): first_serial = "-serial mon:vc" # We always want a ttyS1. Since qemu by default adds a serial # port when nodefaults is not specified, it seems that all that # would be needed is to make sure a "-serial" is there. However, # it appears that when "-serial" is specified, it ignores the # default serial port that is normally added. So here we make # sure to add two -serial if there are none. And only one if # there is one -serial already. serial_num = len(re.findall("-serial", self.qemu_opt)) if serial_num == 0: self.qemu_opt += " %s %s" % (first_serial, self.get("QB_SERIAL_OPT")) elif serial_num == 1: self.qemu_opt += " %s" % self.get("QB_SERIAL_OPT") # We always wants ttyS0 and ttyS1 in qemu machines (see SERIAL_CONSOLES), # if not serial or serialtcp options was specified only ttyS0 is created # and sysvinit shows an error trying to enable ttyS1: # INIT: Id "S1" respawning too fast: disabled for 5 minutes serial_num = len(re.findall("-serial", self.qemu_opt)) if serial_num == 0: if re.search("-nographic", self.qemu_opt) or self.serialstdio: self.qemu_opt += " -serial mon:stdio -serial null" else: self.qemu_opt += " -serial mon:vc -serial null" def start_qemu(self): import shlex if self.kernel: kernel_opts = "-kernel %s -append '%s %s %s %s'" % (self.kernel, self.kernel_cmdline, self.kernel_cmdline_script, self.get('QB_KERNEL_CMDLINE_APPEND'), self.bootparams) if self.bios: kernel_opts += " -bios %s" % self.bios if self.dtb: kernel_opts += " -dtb %s" % self.dtb else: kernel_opts = "" cmd = "%s %s" % (self.qemu_opt, kernel_opts) cmds = shlex.split(cmd) logger.info('Running %s\n' % cmd) pass_fds = [] if self.taplock_descriptor: pass_fds = [self.taplock_descriptor.fileno()] if len(self.portlocks): for descriptor in self.portlocks.values(): pass_fds.append(descriptor.fileno()) process = subprocess.Popen(cmds, stderr=subprocess.PIPE, pass_fds=pass_fds) self.qemupid = process.pid retcode = process.wait() if retcode: if retcode == -signal.SIGTERM: logger.info("Qemu terminated by SIGTERM") else: logger.error("Failed to run qemu: %s", process.stderr.read().decode()) def cleanup(self): if self.cleaned: return # avoid dealing with SIGTERM when cleanup function is running signal.signal(signal.SIGTERM, signal.SIG_IGN) logger.info("Cleaning up") if self.cleantap: cmd = ('sudo', self.qemuifdown, self.tap, self.bindir_native) logger.debug('Running %s' % str(cmd)) subprocess.check_call(cmd) self.release_taplock() self.release_portlock() if self.nfs_running: logger.info("Shutting down the userspace NFS server...") cmd = ("runqemu-export-rootfs", "stop", self.rootfs) logger.debug('Running %s' % str(cmd)) subprocess.check_call(cmd) if self.saved_stty: subprocess.check_call(("stty", self.saved_stty)) if self.clean_nfs_dir: logger.info('Removing %s' % self.rootfs) shutil.rmtree(self.rootfs) shutil.rmtree('%s.pseudo_state' % self.rootfs) self.cleaned = True def run_bitbake_env(self, mach=None): bitbake = shutil.which('bitbake') if not bitbake: return if not mach: mach = self.get('MACHINE') multiconfig = self.get('MULTICONFIG') if multiconfig: multiconfig = "mc:%s" % multiconfig if mach: cmd = 'MACHINE=%s bitbake -e %s' % (mach, multiconfig) else: cmd = 'bitbake -e %s' % multiconfig logger.info('Running %s...' % cmd) return subprocess.check_output(cmd, shell=True).decode('utf-8') def load_bitbake_env(self, mach=None): if self.bitbake_e: return try: self.bitbake_e = self.run_bitbake_env(mach=mach) except subprocess.CalledProcessError as err: self.bitbake_e = '' logger.warning("Couldn't run 'bitbake -e' to gather environment information:\n%s" % err.output.decode('utf-8')) def validate_combos(self): if (self.fstype in self.vmtypes) and self.kernel: raise RunQemuError("%s doesn't need kernel %s!" % (self.fstype, self.kernel)) @property def bindir_native(self): result = self.get('STAGING_BINDIR_NATIVE') if result and os.path.exists(result): return result cmd = ['bitbake', '-e'] multiconfig = self.get('MULTICONFIG') if multiconfig: cmd.append('mc:%s:qemu-helper-native' % multiconfig) else: cmd.append('qemu-helper-native') logger.info('Running %s...' % str(cmd)) out = subprocess.check_output(cmd).decode('utf-8') match = re.search('^STAGING_BINDIR_NATIVE="(.*)"', out, re.M) if match: result = match.group(1) if os.path.exists(result): self.set('STAGING_BINDIR_NATIVE', result) return result raise RunQemuError("Native sysroot directory %s doesn't exist" % result) else: raise RunQemuError("Can't find STAGING_BINDIR_NATIVE in '%s' output" % cmd) def main(): if "help" in sys.argv or '-h' in sys.argv or '--help' in sys.argv: print_usage() return 0 try: config = BaseConfig() def sigterm_handler(signum, frame): logger.info("SIGTERM received") os.kill(config.qemupid, signal.SIGTERM) config.cleanup() # Deliberately ignore the return code of 'tput smam'. subprocess.call(["tput", "smam"]) signal.signal(signal.SIGTERM, sigterm_handler) config.check_args() config.read_qemuboot() config.check_and_set() # Check whether the combos is valid or not config.validate_combos() config.print_config() config.setup_network() config.setup_rootfs() config.setup_final() config.start_qemu() except RunQemuError as err: logger.error(err) return 1 except Exception as err: import traceback traceback.print_exc() return 1 finally: config.cleanup() # Deliberately ignore the return code of 'tput smam'. subprocess.call(["tput", "smam"]) if __name__ == "__main__": sys.exit(main())