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xen.import4929
cdrom-removable.patch
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File cdrom-removable.patch of Package xen.import4929
Index: xen-4.0.2-testing/tools/python/xen/xend/server/HalDaemon.py =================================================================== --- /dev/null +++ xen-4.0.2-testing/tools/python/xen/xend/server/HalDaemon.py @@ -0,0 +1,243 @@ +#!/usr/bin/env python +# -*- mode: python; -*- +#============================================================================ +# This library is free software; you can redistribute it and/or +# modify it under the terms of version 2.1 of the GNU Lesser General Public +# License as published by the Free Software Foundation. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +#============================================================================ +# Copyright (C) 2007 Pat Campbell <plc@novell.com> +# Copyright (C) 2007 Novell Inc. +#============================================================================ + +"""hald (Hardware Abstraction Layer Daemon) watcher for Xen management + of removable block device media. + +""" + +import gobject +import dbus +import dbus.glib +import os +import types +import sys +import signal +import traceback +from xen.xend.xenstore.xstransact import xstransact, complete +from xen.xend.xenstore.xsutil import xshandle +from xen.xend import PrettyPrint +from xen.xend import XendLogging +from xen.xend.XendLogging import log + +DEVICE_TYPES = ['vbd', 'tap'] + +class HalDaemon: + """The Hald block device watcher for XEN + """ + + """Default path to the log file. """ + logfile_default = "/var/log/xen/hald.log" + + """Default level of information to be logged.""" + loglevel_default = 'INFO' + + + def __init__(self): + + XendLogging.init(self.logfile_default, self.loglevel_default) + log.debug( "%s", "__init__") + + self.udi_dict = {} + self.debug = 0 + self.dbpath = "/local/domain/0/backend" + self.bus = dbus.SystemBus() + self.hal_manager_obj = self.bus.get_object('org.freedesktop.Hal', '/org/freedesktop/Hal/Manager') + self.hal_manager = dbus.Interface( self.hal_manager_obj, 'org.freedesktop.Hal.Manager') + self.gatherBlockDevices() + self.registerDeviceCallbacks() + + def run(self): + log.debug( "%s", "In new run" ); + try: + self.mainloop = gobject.MainLoop() + self.mainloop.run() + except KeyboardInterrupt, ex: + log.debug('Keyboard exception handler: %s', ex ) + self.mainloop.quit() + except Exception, ex: + log.debug('Generic exception handler: %s', ex ) + self.mainloop.quit() + + def __del__(self): + log.debug( "%s", "In del " ); + self.unRegisterDeviceCallbacks() + self.mainloop.quit() + + def shutdown(self): + log.debug( "%s", "In shutdown now " ); + self.unRegisterDeviceCallbacks() + self.mainloop.quit() + + def stop(self): + log.debug( "%s", "In stop now " ); + self.unRegisterDeviceCallbacks() + self.mainloop.quit() + + def gatherBlockDevices(self): + + # Get all the current devices from hal and save in a dictionary + try: + device_names = self.hal_manager.GetAllDevices() + i = 0; + for name in device_names: + #log.debug("device name, device=%s",name) + dev_obj = self.bus.get_object ('org.freedesktop.Hal', name) + dev = dbus.Interface (dev_obj, 'org.freedesktop.Hal.Device') + dev_properties = dev_obj.GetAllProperties(dbus_interface="org.freedesktop.Hal.Device") + if dev_properties.has_key('block.device'): + dev_str = dev_properties['block.device'] + dev_major = dev_properties['block.major'] + dev_minor = dev_properties['block.minor'] + udi_info = {} + udi_info['device'] = dev_str + udi_info['major'] = dev_major + udi_info['minor'] = dev_minor + udi_info['udi'] = name + self.udi_dict[i] = udi_info + i = i + 1 + except Exception, ex: + print >>sys.stderr, 'Exception gathering block devices:', ex + log.warn("Exception gathering block devices (%s)",ex) + + # + def registerDeviceCallbacks(self): + # setup the callbacks for when the gdl changes + self.hal_manager.connect_to_signal('DeviceAdded', self.device_added_callback) + self.hal_manager.connect_to_signal('DeviceRemoved', self.device_removed_callback) + + # + def unRegisterDeviceCallbacks(self): + # setup the callbacks for when the gdl changes + self.hal_manager.remove_signal_receiver(self.device_added_callback,'DeviceAdded') + self.hal_manager.remove_signal_receiver(self.device_removed_callback,'DeviceRemoved') + + # + def device_removed_callback(self,udi): + log.debug('UDI %s was removed',udi) + self.show_dict(self.udi_dict) + for key in self.udi_dict: + udi_info = self.udi_dict[key] + if udi_info['udi'] == udi: + device = udi_info['device'] + major = udi_info['major'] + minor = udi_info['minor'] + self.change_xenstore( "remove", device, major, minor) + + # Adds device to dictionary if not already there + def device_added_callback(self,udi): + log.debug('UDI %s was added', udi) + self.show_dict(self.udi_dict) + dev_obj = self.bus.get_object ('org.freedesktop.Hal', udi) + dev = dbus.Interface (dev_obj, 'org.freedesktop.Hal.Device') + device = dev.GetProperty ('block.device') + major = dev.GetProperty ('block.major') + minor = dev.GetProperty ('block.minor') + udi_info = {} + udi_info['device'] = device + udi_info['major'] = major + udi_info['minor'] = minor + udi_info['udi'] = udi + already = 0 + cnt = 0; + for key in self.udi_dict: + info = self.udi_dict[key] + if info['udi'] == udi: + already = 1 + break + cnt = cnt + 1 + if already == 0: + self.udi_dict[cnt] = udi_info; + log.debug('UDI %s was added, device:%s major:%s minor:%s index:%d\n', udi, device, major, minor, cnt) + self.change_xenstore( "add", device, major, minor) + + # Debug helper, shows dictionary contents + def show_dict(self,dict=None): + if self.debug == 0 : + return + if dict == None : + dict = self.udi_dict + for key in dict: + log.debug('udi_info %s udi_info:%s',key,dict[key]) + + # Set or clear xenstore media-present depending on the action argument + # for every vbd that has this block device + def change_xenstore(self,action, device, major, minor): + for type in DEVICE_TYPES: + path = self.dbpath + '/' + type + domains = xstransact.List(path) + log.debug('domains: %s', domains) + for domain in domains: # for each domain + devices = xstransact.List( path + '/' + domain) + log.debug('devices: %s',devices) + for device in devices: # for each vbd device + str = device.split('/') + vbd_type = None; + vbd_physical_device = None + vbd_media = None + vbd_device_path = path + '/' + domain + '/' + device + listing = xstransact.List(vbd_device_path) + for entry in listing: # for each entry + item = path + '/' + entry + value = xstransact.Read( vbd_device_path + '/' + entry) + log.debug('%s=%s',item,value) + if item.find('media-present') != -1: + vbd_media = item; + vbd_media_path = item + if item.find('physical-device') != -1: + vbd_physical_device = value; + if item.find('type') != -1: + vbd_type = value; + if vbd_type is not None and vbd_physical_device is not None and vbd_media is not None : + inode = vbd_physical_device.split(':') + imajor = parse_hex(inode[0]) + iminor = parse_hex(inode[1]) + log.debug("action:%s major:%s- minor:%s- imajor:%s- iminor:%s- inode: %s", + action,major,minor, imajor, iminor, inode) + if int(imajor) == int(major) and int(iminor) == int(minor): + if action == "add": + xs_dict = {'media': "1"} + xstransact.Write(vbd_device_path, 'media-present', "1" ) + log.debug("wrote xenstore media-present 1 path:%s",vbd_media_path) + else: + xstransact.Write(vbd_device_path, 'media-present', "0" ) + log.debug("wrote xenstore media 0 path:%s",vbd_media_path) + +def mylog( fmt, *args): + f = open('/tmp/haldaemon.log', 'a') + print >>f, "HalDaemon ", fmt % args + f.close() + + +def parse_hex(val): + try: + if isinstance(val, types.StringTypes): + return int(val, 16) + else: + return val + except ValueError: + return None + +if __name__ == "__main__": + watcher = HalDaemon() + watcher.run() + print 'Falling off end' + + Index: xen-4.0.2-testing/tools/python/xen/xend/server/Hald.py =================================================================== --- /dev/null +++ xen-4.0.2-testing/tools/python/xen/xend/server/Hald.py @@ -0,0 +1,125 @@ +#============================================================================ +# This library is free software; you can redistribute it and/or +# modify it under the terms of version 2.1 of the GNU Lesser General Public +# License as published by the Free Software Foundation. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +#============================================================================ +# Copyright (C) 2007 Pat Campbell <plc@novell.com> +# Copyright (C) 2007 Novell Inc. +#============================================================================ + +import errno +import types +import os +import sys +import time +import signal +from traceback import print_exc + +from xen.xend.XendLogging import log + +class Hald: + def __init__(self): + self.ready = False + self.running = True + + def run(self): + """Starts the HalDaemon process + """ + self.ready = True + try: + myfile = self.find("xen/xend/server/HalDaemon.py") + args = (["python", myfile ]) + self.pid = self.daemonize("python", args ) + #log.debug( "%s %s pid:%d", "Hald.py starting ", args, self.pid ) + except: + self.pid = -1 + log.debug("Unable to start HalDaemon process") + + def shutdown(self): + """Shutdown the HalDaemon process + """ + log.debug("%s pid:%d", "Hald.shutdown()", self.pid) + self.running = False + self.ready = False + if self.pid != -1: + try: + os.kill(self.pid, signal.SIGINT) + except: + print_exc() + + def daemonize(self,prog, args): + """Runs a program as a daemon with the list of arguments. Returns the PID + of the daemonized program, or returns 0 on error. + Copied from xm/create.py instead of importing to reduce coupling + """ + r, w = os.pipe() + pid = os.fork() + + if pid == 0: + os.close(r) + w = os.fdopen(w, 'w') + os.setsid() + try: + pid2 = os.fork() + except: + pid2 = None + if pid2 == 0: + os.chdir("/") + env = os.environ.copy() + env['PYTHONPATH'] = self.getpythonpath() + for fd in range(0, 256): + try: + os.close(fd) + except: + pass + os.open("/dev/null", os.O_RDWR) + os.dup2(0, 1) + os.dup2(0, 2) + os.execvpe(prog, args, env) + os._exit(1) + else: + w.write(str(pid2 or 0)) + w.close() + os._exit(0) + os.close(w) + r = os.fdopen(r) + daemon_pid = int(r.read()) + r.close() + os.waitpid(pid, 0) + #log.debug( "daemon_pid: %d", daemon_pid ) + return daemon_pid + + def getpythonpath(self): + str = " " + for p in sys.path: + if str != " ": + str = str + ":" + p + else: + if str != "": + str = p + return str + + def find(self,path, matchFunc=os.path.isfile): + """Find a module in the sys.path + From web page: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52224 + """ + for dirname in sys.path: + candidate = os.path.join(dirname, path) + if matchFunc(candidate): + return candidate + raise Error("Can't find file %s" % path) + +if __name__ == "__main__": + watcher = Hald() + watcher.run() + time.sleep(10) + watcher.shutdown() Index: xen-4.0.2-testing/tools/python/xen/xend/server/SrvServer.py =================================================================== --- xen-4.0.2-testing.orig/tools/python/xen/xend/server/SrvServer.py +++ xen-4.0.2-testing/tools/python/xen/xend/server/SrvServer.py @@ -56,6 +56,7 @@ from xen.web.SrvDir import SrvDir from SrvRoot import SrvRoot from XMLRPCServer import XMLRPCServer +from xen.xend.server.Hald import Hald xoptions = XendOptions.instance() @@ -245,6 +246,8 @@ def _loadConfig(servers, root, reload): if xoptions.get_xend_unix_xmlrpc_server(): servers.add(XMLRPCServer(XendAPI.AUTH_PAM, False)) + servers.add(Hald()) + def create(): root = SrvDir() Index: xen-4.0.2-testing/tools/ioemu-qemu-xen/xenstore.c =================================================================== --- xen-4.0.2-testing.orig/tools/ioemu-qemu-xen/xenstore.c +++ xen-4.0.2-testing/tools/ioemu-qemu-xen/xenstore.c @@ -18,6 +18,7 @@ #include "exec-all.h" #include "sysemu.h" +#include "console.h" #include "hw.h" #include "pci.h" #include "qemu-timer.h" @@ -553,6 +554,21 @@ void xenstore_parse_domain_config(int hv #endif bs = bdrv_new(dev); + + /* if cdrom physical put a watch on media-present */ + if (bdrv_get_type_hint(bs) == BDRV_TYPE_CDROM) { + if (drv && !strcmp(drv, "phy")) { + if (pasprintf(&buf, "%s/media-present", bpath) != -1) { + if (bdrv_is_inserted(bs)) + xs_write(xsh, XBT_NULL, buf, "1", strlen("1")); + else { + xs_write(xsh, XBT_NULL, buf, "0", strlen("0")); + } + xs_watch(xsh, buf, "media-present"); + } + } + } + /* check if it is a cdrom */ if (danger_type && !strcmp(danger_type, "cdrom")) { bdrv_set_type_hint(bs, BDRV_TYPE_CDROM); @@ -961,6 +977,50 @@ void xenstore_record_dm_state(const char xenstore_record_dm("state", state); } +static void xenstore_process_media_change_event(char **vec) +{ + char *media_present = NULL; + unsigned int len; + + media_present = xs_read(xsh, XBT_NULL, vec[XS_WATCH_PATH], &len); + + if (media_present) { + BlockDriverState *bs; + char *buf = NULL, *cp = NULL, *path = NULL, *dev = NULL; + + path = strdup(vec[XS_WATCH_PATH]); + cp = strstr(path, "media-present"); + if (cp){ + *(cp-1) = '\0'; + pasprintf(&buf, "%s/dev", path); + dev = xs_read(xsh, XBT_NULL, buf, &len); + if (dev) { + if ( !strncmp(dev, "xvd", 3)) { + memmove(dev, dev+1, strlen(dev)); + dev[0] = 'h'; + dev[1] = 'd'; + } + bs = bdrv_find(dev); + if (!bs) { + term_printf("device not found\n"); + return; + } + if (strcmp(media_present, "0") == 0 && bs) { + bdrv_close(bs); + } + else if (strcmp(media_present, "1") == 0 && + bs != NULL && bs->drv == NULL) { + if (bdrv_open(bs, bs->filename, 0 /* snapshot */) < 0) { + fprintf(logfile, "%s() qemu: could not open cdrom disk '%s'\n", + __func__, bs->filename); + } + bs->media_changed = 1; + } + } + } + } +} + void xenstore_process_event(void *opaque) { char **vec, *offset, *bpath = NULL, *buf = NULL, *drv = NULL, *image = NULL; @@ -991,6 +1051,11 @@ void xenstore_process_event(void *opaque xenstore_watch_callbacks[i].cb(vec[XS_WATCH_TOKEN], xenstore_watch_callbacks[i].opaque); + if (!strcmp(vec[XS_WATCH_TOKEN], "media-present")) { + xenstore_process_media_change_event(vec); + goto out; + } + hd_index = drive_name_to_index(vec[XS_WATCH_TOKEN]); if (hd_index == -1) { fprintf(stderr,"medium change watch on `%s' -"
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