from Plugins.Plugin import PluginDescriptor
-from twisted.internet.protocol import Protocol, Factory
-from twisted.internet import reactor
from Components.Harddisk import harddiskmanager
+from Tools.Directories import fileExists
hotplugNotifier = [ ]
+bdpoll = None
-class Hotplug(Protocol):
- def connectionMade(self):
- self.received = ""
+def processHotplugData(self, v):
+ print "hotplug:", v
+ action = v.get("ACTION")
+ device = v.get("DEVPATH")
+ physdevpath = v.get("PHYSDEVPATH")
+ media_state = v.get("X_E2_MEDIA_STATUS")
- def dataReceived(self, data):
- self.received += data
+ dev = device.split('/')[-1]
- def connectionLost(self, reason):
- data = self.received.split('\0')[:-1]
+ if action is not None and action == "add":
+ error, blacklisted, removable, is_cdrom, partitions, medium_found = harddiskmanager.addHotplugPartition(dev, physdevpath)
+ if bdpoll and removable or is_cdrom:
+ bdpoll.addDevice(dev, is_cdrom, medium_found)
+ elif action is not None and action == "remove":
+ if bdpoll:
+ bdpoll.removeDevice(dev)
+ harddiskmanager.removeHotplugPartition(dev)
+ elif media_state is not None:
+ if media_state == '1':
+ harddiskmanager.removeHotplugPartition(dev)
+ harddiskmanager.addHotplugPartition(dev, physdevpath)
+ elif media_state == '0':
+ harddiskmanager.removeHotplugPartition(dev)
- v = {}
+ for callback in hotplugNotifier:
+ try:
+ callback(dev, action or media_state)
+ except AttributeError:
+ hotplugNotifier.remove(callback)
- for x in data:
- i = x.find('=')
- var, val = x[:i], x[i+1:]
- v[var] = val
+CDROM_DRIVE_STATUS = 0x5326
+CDROM_MEDIA_CHANGED = 0x5325
+CDSL_CURRENT = ((int)(~0>>1))
+CDS_NO_INFO = 0
+CDS_NO_DISC = 1
+CDS_TRAY_OPEN = 2
+CDS_DRIVE_NOT_READY = 3
+CDS_DISC_OK = 4
+ENOMEDIUM = 159
+IOC_NRBITS = 8
+IOC_NRSHIFT = 0
+IOC_TYPESHIFT = (IOC_NRSHIFT+IOC_NRBITS)
+BLKRRPART = ((0x12<<IOC_TYPESHIFT) | (95<<IOC_NRSHIFT))
- print "hotplug:", v
+def autostart(reason, **kwargs):
+ if reason == 0:
+ print "starting hotplug handler"
- action = v.get("ACTION")
- device = v.get("DEVPATH")
- physdevpath = v.get("PHYSDEVPATH")
- media_state = v.get("X_E2_MEDIA_STATUS")
+ if fileExists('/dev/.udev'):
+ global netlink
+ global bdpoll
+ from enigma import eSocketNotifier, eTimer, ePythonMessagePump
+ import socket
+ from select import POLLIN, POLLPRI
- dev = device.split('/')[-1]
+ class Netlink:
+ def __init__(self):
+ self.netlink = socket.socket(socket.AF_NETLINK, socket.SOCK_DGRAM, 15)
+ self.netlink.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 65536)
+ self.netlink.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 65536)
+ self.netlink.bind((0, 1))
+ self.sn = eSocketNotifier(self.netlink.fileno(), POLLIN|POLLPRI)
+ self.sn.callback.append(self.dataAvail)
- if action is not None and action == "add":
- harddiskmanager.addHotplugPartition(dev, physdevpath)
- elif action is not None and action == "remove":
- harddiskmanager.removeHotplugPartition(dev)
- elif media_state is not None:
- if media_state == '1':
- harddiskmanager.removeHotplugPartition(dev)
- harddiskmanager.addHotplugPartition(dev, physdevpath)
- elif media_state == '0':
- harddiskmanager.removeHotplugPartition(dev)
-
- for callback in hotplugNotifier:
- try:
- callback(dev, action or media_state)
- except AttributeError:
- hotplugNotifier.remove(callback)
+ def dataAvail(self, what):
+ received = self.netlink.recvfrom(16384)
+# print "HOTPLUG(%d):" %(what), received
-def autostart(reason, **kwargs):
- if reason == 0:
- print "starting hotplug handler"
- factory = Factory()
- factory.protocol = Hotplug
+ data = received[0].split('\0')[:-1]
+ v = {}
+
+ for x in data:
+ i = x.find('=')
+ var, val = x[:i], x[i+1:]
+ v[var] = val
+
+ if v['SUBSYSTEM'] == 'block' and v['ACTION'] in ('add', 'remove'):
+ processHotplugData(self, v)
+
+ from threading import Thread, Semaphore, Lock
+
+ class ThreadQueue:
+ def __init__(self):
+ self.__list = [ ]
+ self.__lock = Lock()
+
+ def push(self, val):
+ list = self.__list
+ lock = self.__lock
+ lock.acquire()
+ list.append(val)
+ lock.release()
+
+ def pop(self):
+ list = self.__list
+ lock = self.__lock
+ lock.acquire()
+ ret = list[0]
+ del list[0]
+ lock.release()
+ return ret
- try:
import os
- os.remove("/tmp/hotplug.socket")
- except OSError:
- pass
+ import errno
+ import fcntl
+
+ class BDPoll(Thread):
+ CHECK_INTERVAL = 2000
+ MSG_MEDIUM_REMOVED = 1
+ MSG_MEDIUM_INSERTED = 2
+ MSG_POLL_FINISHED = 4
+ def __init__(self):
+ Thread.__init__(self)
+ self.__sema = Semaphore(0)
+ self.__lock = Lock()
+ self.running = False
+ self.devices_to_poll = { }
+ self.messages = ThreadQueue()
+ self.checkTimer = eTimer()
+ self.checkTimer.callback.append(self.timeout)
+ self.checkTimer.start(BDPoll.CHECK_INTERVAL, True)
+ self.mp = ePythonMessagePump()
+ self.mp.recv_msg.get().append(self.gotThreadMsg)
+ self.start()
+
+ def gotThreadMsg(self, msg):
+ msg = self.messages.pop()
+ if msg[0] == BDPoll.MSG_MEDIUM_REMOVED:
+ print "MSG_MEDIUM_REMOVED"
+ harddiskmanager.removeHotplugPartition(msg[1])
+ elif msg[0] == BDPoll.MSG_MEDIUM_INSERTED:
+ print "MSG_MEDIUM_INSERTED"
+ harddiskmanager.addHotplugPartition(msg[1])
+ elif msg[0] == BDPoll.MSG_POLL_FINISHED:
+ self.checkTimer.start(BDPoll.CHECK_INTERVAL, True)
+
+ def timeout(self):
+ self.__sema.release() # start bdpoll loop in thread
+
+ def is_mounted(self, dev):
+ mounts = file('/proc/mounts').read()
+ return mounts.find(dev) != -1
+
+ def run(self):
+ sema = self.__sema
+ lock = self.__lock
+ messages = self.messages
+ mp = self.mp
+ self.running = True
+ while self.running:
+ sema.acquire()
+ self.__lock.acquire()
+ devices_to_poll = self.devices_to_poll.items()
+ self.__lock.release()
+ devices_to_poll_processed = [ ]
+ for device, state in devices_to_poll:
+ got_media = False
+ is_cdrom, prev_media_state = state
+ if is_cdrom:
+ try:
+ fd = os.open("/dev/" + device, os.O_RDONLY | os.O_NONBLOCK | os.O_EXCL)
+ except OSError, err:
+ if err.errno == errno.EBUSY:
+ print "open cdrom exclusive failed:",
+ if not self.is_mounted(device):
+ print "not mounted"
+ continue
+ try:
+ print "mounted... try non exclusive"
+ fd = os.open("/dev/" + device, os.O_RDONLY | os.O_NONBLOCK)
+ except OSError, err:
+ print "open cdrom not exclusive failed", os.strerror(err.errno)
+ continue
+ #here the fs must be valid!
+ try:
+ ret = fcntl.ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT)
+ except IOError, err:
+ print "ioctl CDROM_DRIVE_STATUS failed", os.strerror(err.errno)
+ else:
+ if ret in (CDS_NO_INFO, CDS_NO_DISC, CDS_TRAY_OPEN, CDS_DRIVE_NOT_READY):
+ pass
+ elif ret == CDS_DISC_OK:
+ #todo new kernels support events to userspace event on media change
+ #but not 2.6.18.... see hotplug-ng bdpoll.c
+ got_media = True
+ os.close(fd)
+ else:
+ try:
+ fd = os.open("/dev/" + device, os.O_RDONLY)
+ except OSError, err:
+ if err.errno == ENOMEDIUM:
+ pass
+ else:
+ print "open non cdrom failed", os.strerror(err.errno)
+ continue
+ else:
+ got_media = True
+ os.close(fd)
+ if prev_media_state:
+ if not got_media:
+ print "media removal detected on", device
+ try:
+ fd = os.open("/dev/" + device, os.O_RDONLY | os.O_NONBLOCK)
+ except OSError, err:
+ print "open device for blkrrpart ioctl failed", os.strerror(err.errno)
+ else:
+ try:
+ fcntl.ioctl(fd, BLKRRPART)
+ except IOError, err:
+ print "ioctl BLKRRPART failed", os.strerror(err.errno)
+ os.close(fd)
+ else:
+ if got_media:
+ print "media insertion detected on", device
+ devices_to_poll_processed.append((device, is_cdrom, got_media))
+ self.__lock.acquire()
+ for device, is_cdrom, state in devices_to_poll_processed:
+ old_state = self.devices_to_poll.get(device)
+ if old_state is not None and old_state[1] != state:
+ msg = state and BDPoll.MSG_MEDIUM_INSERTED or BDPoll.MSG_MEDIUM_REMOVED
+ self.devices_to_poll[device] = (is_cdrom, state)
+ messages.push((msg, device))
+ mp.send(0)
+
+ self.__lock.release()
+ messages.push((self.MSG_POLL_FINISHED,))
+ mp.send(0)
+
+ def addDevice(self, device, is_cdrom, inserted):
+ self.__lock.acquire()
+ if device in self.devices_to_poll:
+ print "device", device, "already in bdpoll"
+ else:
+ print "add device", device, "to bdpoll current state:",
+ if inserted:
+ print "medium inserted"
+ else:
+ print "medium removed"
+ self.devices_to_poll[device] = (is_cdrom, inserted)
+ self.__lock.release()
+
+ def removeDevice(self, device):
+ self.__lock.acquire()
+ if device in self.devices_to_poll:
+ print "device", device, "removed from bdpoll"
+ del self.devices_to_poll[device]
+ else:
+ print "try to del not exist device", device, "from bdpoll"
+ self.__lock.release()
+
+ netlink = Netlink()
+ bdpoll = BDPoll()
+ for blockdev, removable, is_cdrom, medium_found in harddiskmanager.devices_scanned_on_init:
+ if removable or is_cdrom:
+ bdpoll.addDevice(blockdev, is_cdrom, medium_found)
+ else:
+ from twisted.internet.protocol import Protocol, Factory
+ from twisted.internet import reactor
+
+ try:
+ import os
+ os.remove("/tmp/hotplug.socket")
+ except OSError:
+ pass
+
+ class Hotplug(Protocol):
+ def connectionMade(self):
+ print "HOTPLUG connection!"
+ self.received = ""
+
+ def dataReceived(self, data):
+ print "hotplug:", data
+ self.received += data
+ print "complete", self.received
+
+ def connectionLost(self, reason):
+ print "HOTPLUG connection lost!"
+ data = self.received.split('\0')[:-1]
+ v = {}
+
+ for x in data:
+ i = x.find('=')
+ var, val = x[:i], x[i+1:]
+ v[var] = val
+
+ processHotplugData(self, v)
- reactor.listenUNIX("/tmp/hotplug.socket", factory)
+ factory = Factory()
+ factory.protocol = Hotplug
+ reactor.listenUNIX("/tmp/hotplug.socket", factory)
def Plugins(**kwargs):
return PluginDescriptor(name = "Hotplug", description = "listens to hotplug events", where = PluginDescriptor.WHERE_AUTOSTART, fnc = autostart)
git.cweiske.de / enigma2.git / blobdiff