def _register_watches(self, libvirt_domain):
if libvirt_domain:
name = libvirt_domain.name()
if name in self._qdb:
return
if not libvirt_domain.isActive():
return
# open separate connection to Qubes DB:
# 1. to not confuse pull() with responses to real commands sent from
# other threads (like read, write etc) with watch events
# 2. to not think whether QubesDB is thread-safe (it isn't)
try:
self._qdb[name] = QubesDB(name)
except Error as e:
if e.args[0] != 2:
raise
libvirt.virEventAddTimeout(500, self._retry_register_watches,
libvirt_domain)
return
else:
name = "dom0"
self._qdb[name] = QubesDB(name)
try:
self._qdb[name].watch('/qubes-block-devices')
except Error as e:
if e.args[0] == 102: # Connection reset by peer
# QubesDB daemon not running - most likely we've connected to
# stale daemon which just exited; retry later
libvirt.virEventAddTimeout(500, self._retry_register_watches,
libvirt_domain)
return
self._qdb_events[name] = libvirt.virEventAddHandle(
self._qdb[name].watch_fd(),
libvirt.VIR_EVENT_HANDLE_READABLE,
self._qdb_handler, name)
def add_handle(self, fd, events, cb, opaque):
try:
return libvirt.virEventAddHandle(fd, events, cb, opaque)
except libvirt.libvirtError, e:
message = e.get_error_message()
code = e.get_error_code()
raise exception.LibvirtAPI(message, code)
def _register_watches(self, libvirt_domain):
if libvirt_domain:
name = libvirt_domain.name()
if name in self._qdb:
return
# open separate connection to Qubes DB:
# 1. to not confuse pull() with responses to real commands sent from
# other threads (like read, write etc) with watch events
# 2. to not think whether QubesDB is thread-safe (it isn't)
while libvirt_domain.isActive() and name not in self._qdb:
try:
self._qdb[name] = QubesDB(name)
except Error as e:
if e.args[0] != 2:
raise
time.sleep(0.5)
if name not in self._qdb:
# domain no longer active
return
else:
name = "dom0"
self._qdb[name] = QubesDB(name)
self._qdb[name].watch('/qubes-block-devices')
self._qdb_events[name] = libvirt.virEventAddHandle(
self._qdb[name].watch_fd(),
libvirt.VIR_EVENT_HANDLE_READABLE,
self._qdb_handler, name)
def _register_watches(self, libvirt_domain):
if libvirt_domain:
name = libvirt_domain.name()
if name in self._qdb:
return
# open separate connection to Qubes DB:
# 1. to not confuse pull() with responses to real commands sent from
# other threads (like read, write etc) with watch events
# 2. to not think whether QubesDB is thread-safe (it isn't)
while libvirt_domain.isActive() and name not in self._qdb:
try:
self._qdb[name] = QubesDB(name)
except Error as e:
if e.args[0] != 2:
raise
time.sleep(0.5)
if name not in self._qdb:
# domain no longer active
return
else:
name = "dom0"
self._qdb[name] = QubesDB(name)
self._qdb[name].watch('/qubes-block-devices')
self._qdb_events[name] = libvirt.virEventAddHandle(
self._qdb[name].watch_fd(), libvirt.VIR_EVENT_HANDLE_READABLE,
self._qdb_handler, name)
def start(self):
libvirt.virEventRegisterDefaultImpl()
libvirt.registerErrorHandler(error_handler, None)
atexit.register(self.reset_term)
self.attrs = termios.tcgetattr(0)
tty.setraw(0)
self.connection = LibvirtConnect.get_connection()
self.domain = self.connection.lookupByName(self.domain_name)
self.state = self.domain.state(0)
self.connection.domainEventRegister(self.lifecycle_callback, self)
sys.stdout.write('Press Control+] to quit.\n\r')
sys.stdout.flush()
libvirt.virEventAddHandle(
0, libvirt.VIR_EVENT_HANDLE_READABLE, self.stdin_callback, None)
while self.check_console():
libvirt.virEventRunDefaultImpl()
sys.stdout.write('\n\rExited.\n\r')
sys.stdout.flush()
console.state = console.domain.state(0)
logging.info("%s transitioned to state %d, reason %d",
console.uuid, console.state[0], console.state[1])
# main
if len(sys.argv) != 3:
print("Usage:", sys.argv[0], "URI UUID")
print("for example:", sys.argv[0], "'qemu:///system' '32ad945f-7e78-c33a-e96d-39f25e025d81'")
sys.exit(1)
uri = sys.argv[1]
uuid = sys.argv[2]
print("Escape character is ^]")
logging.basicConfig(filename='msg.log', level=logging.DEBUG)
logging.info("URI: %s", uri)
logging.info("UUID: %s", uuid)
libvirt.virEventRegisterDefaultImpl()
libvirt.registerErrorHandler(error_handler, None)
atexit.register(reset_term)
attrs = termios.tcgetattr(0)
tty.setraw(0)
console = Console(uri, uuid)
console.stdin_watch = libvirt.virEventAddHandle(0, libvirt.VIR_EVENT_HANDLE_READABLE, stdin_callback, console)
while check_console(console):
libvirt.virEventRunDefaultImpl()
logging.info("%s transitioned to state %d, reason %d",
console.uuid, console.state[0], console.state[1])
# main
if len(sys.argv) != 3:
print("Usage:", sys.argv[0], "URI UUID")
print("for example:", sys.argv[0], "'qemu:///system' '32ad945f-7e78-c33a-e96d-39f25e025d81'")
sys.exit(1)
uri = sys.argv[1]
uuid = sys.argv[2]
print("Escape character is ^]")
logging.basicConfig(filename='msg.log', level=logging.DEBUG)
logging.info("URI: %s", uri)
logging.info("UUID: %s", uuid)
libvirt.virEventRegisterDefaultImpl()
libvirt.registerErrorHandler(error_handler, None)
atexit.register(reset_term)
attrs = termios.tcgetattr(0)
tty.setraw(0)
console = Console(uri, uuid)
console.stdin_watch = libvirt.virEventAddHandle(0, libvirt.VIR_EVENT_HANDLE_READABLE, stdin_callback, console)
while check_console(console):
libvirt.virEventRunDefaultImpl()
