Add source tree for the management utils.
401d7e16RJj-lbtsVEjua6HYAIiKiA tools/examples/xc_dom_create.py
403b7cf7J7FsSSoEPGhx6gXR4pIdZg tools/examples/xc_physinfo.py
401d7e16X4iojyKopo_j63AyzYZd2A tools/examples/xc_vd_tool.py
+40c9c4684Wfg8VgMKtRFa_ULi2e_tQ tools/examples/xm_dom_control.py
+40c9c468pXANclL7slGaoD0kSrIwoQ tools/examples/xm_dom_create.py
+40c9c468QKoqBHjb5Qwrm60pNVcVng tools/examples/xm_vd_tool.py
3f776bd2Xd-dUcPKlPN2vG89VGtfvQ tools/misc/Makefile
40ab2cfawIw8tsYo0dQKtp83h4qfTQ tools/misc/fakei386xen
3f6dc136ZKOjd8PIqLbFBl_v-rnkGg tools/misc/miniterm/Makefile
4055ee41IfFazrwadCH2J72nz-A9YA tools/xenctl/Makefile
4055ee4b_4Rvns_KzE12csI14EKK6Q tools/xenctl/lib/__init__.py
4055ee4dwy4l0MghZosxoiu6zmhc9Q tools/xenctl/lib/console_client.py
+40c9c468IienauFHQ_xJIcqnPJ8giQ tools/xenctl/lib/ip.py
4059c6a0pnxhG8hwSOivXybbGOwuXw tools/xenctl/lib/tempfile.py
3fbd4bd6GtGwZGxYUJPOheYIR7bPaA tools/xenctl/lib/utils.py
+40c9c468F36e06WH38kpYrD3JfXC0Q tools/xenctl/lib/vdisk.py
4055ee44Bu6oP7U0WxxXypbUt4dNPQ tools/xenctl/setup.py
40431ac64Hj4ixUnKmlugZKhXPFE_Q tools/xend/Makefile
4055ad95Se-FqttgxollqOAAHB94zA tools/xend/lib/__init__.py
40431ac8wrUEj-XM7B8smFtx_HA7lQ tools/xend/lib/utils.c
4054a2fdkdATEnRw-U7AUlgu-6JiUA tools/xend/setup.py
4056cd26Qyp09iNoOjrvzg8KYzSqOw tools/xend/xend
+40c9c468icGyC5RAF1bRKsCXPDCvsA tools/xenmgr/Makefile
+40c9c468SNuObE_YWARyS0hzTPSzKg tools/xenmgr/lib/Args.py
+40c9c468Um_qc66OQeLEceIz1pgD5g tools/xenmgr/lib/EventServer.py
+40c9c468U8EVl0d3G--8YXVg6VJD3g tools/xenmgr/lib/EventTypes.py
+40c9c468QJTEuk9g4qHxGpmIi70PEQ tools/xenmgr/lib/PrettyPrint.py
+40c9c4688m3eqnC8fhLu1APm36VOVA tools/xenmgr/lib/XendClient.py
+40c9c468t6iIKTjwuYoe-UMCikDcOQ tools/xenmgr/lib/XendConsole.py
+40c9c468WnXs6eOUSff23IIGI4kMfQ tools/xenmgr/lib/XendDB.py
+40c9c468fSl3H3IypyT0ppkbb0ZT9A tools/xenmgr/lib/XendDomain.py
+40c9c468bbKq3uC7_fuNUkiMMjArdw tools/xenmgr/lib/XendDomainConfig.py
+40c9c4685ykq87_n1kVUbMr9flx9fg tools/xenmgr/lib/XendDomainInfo.py
+40c9c46854nsHmuxHQHncKk5rAs5NA tools/xenmgr/lib/XendMigrate.py
+40c9c468M96gA1EYDvNa5w5kQNYLFA tools/xenmgr/lib/XendNode.py
+40c9c4686jruMyZIqiaZRMiMoqMJtg tools/xenmgr/lib/XendRoot.py
+40c9c468P75aHqyIE156JXwc-5W92A tools/xenmgr/lib/XendVdisk.py
+40c9c468xzANp6o2D_MeCYwNmOIUsQ tools/xenmgr/lib/XendVnet.py
+40c9c468x191zetrVlMnExfsQWHxIQ tools/xenmgr/lib/__init__.py
+40c9c468S2YnCEKmk4ey8XQIST7INg tools/xenmgr/lib/encode.py
+40c9c468DCpMe542varOolW1Xc68ew tools/xenmgr/lib/server/SrvBase.py
+40c9c468IxQabrKJSWs0aEjl-27mRQ tools/xenmgr/lib/server/SrvConsole.py
+40c9c4689Io5bxfbYIfRiUvsiLX0EQ tools/xenmgr/lib/server/SrvConsoleDir.py
+40c9c468woSmBByfeXA4o_jGf2gCgA tools/xenmgr/lib/server/SrvConsoleServer.py
+40c9c468kACsmkqjxBWKHRo071L26w tools/xenmgr/lib/server/SrvDeviceDir.py
+40c9c468EQZJVkCLds-OhesJVVyZbQ tools/xenmgr/lib/server/SrvDir.py
+40c9c468TyHZUq8sk0FF_vxM6Sozrg tools/xenmgr/lib/server/SrvDomain.py
+40c9c469WzajDjutou3X7FmL9hMf3g tools/xenmgr/lib/server/SrvDomainDir.py
+40c9c469-8mYEJJTAR6w_ClrJRAfwQ tools/xenmgr/lib/server/SrvEventDir.py
+40c9c4694eu5759Dehr4Uhakei0EMg tools/xenmgr/lib/server/SrvNode.py
+40c9c469TaZ83ypsrktmPSHLEZiP5w tools/xenmgr/lib/server/SrvRoot.py
+40c9c469W3sgDMbBJYQdz5wbQweL0Q tools/xenmgr/lib/server/SrvServer.py
+40c9c469JlUVPkwGWZyVnqIsU8U6Bw tools/xenmgr/lib/server/SrvVdisk.py
+40c9c469sG8iuyxjVH3zKw8XOAyxtQ tools/xenmgr/lib/server/SrvVdiskDir.py
+40c9c469aq7oXrE1Ngqf3_lBqL0RoQ tools/xenmgr/lib/server/SrvVnetDir.py
+40c9c469Y_aimoOFfUZoS-4eV8gEKg tools/xenmgr/lib/server/__init__.py
+40c9c4692hckPol_EK0EGB16ZyDsyQ tools/xenmgr/lib/server/blkif.py
+40c9c469N2-b3GqpLHHHPZykJPLVvA tools/xenmgr/lib/server/channel.py
+40c9c469hJ_IlatRne-9QEa0-wlquw tools/xenmgr/lib/server/console.py
+40c9c469UcNJh_NuLU0ytorM0Lk5Ow tools/xenmgr/lib/server/controller.py
+40c9c469vHh-qLiiubdbKEQbJf18Zw tools/xenmgr/lib/server/cstruct.py
+40c9c469yrm31i60pGKslTi2Zgpotg tools/xenmgr/lib/server/messages.py
+40c9c46925x-Rjb0Cv2f1-l2jZrPYg tools/xenmgr/lib/server/netif.py
+40c9c469ZqILEQ8x6yWy0_51jopiCg tools/xenmgr/lib/server/params.py
+40c9c469LNxLVizOUpOjEaTKKCm8Aw tools/xenmgr/lib/sxp.py
+40c9c469kT0H9COWzA4XzPBjWK0WsA tools/xenmgr/netfix
+40c9c469n2RRwCmjWdjdyyVRWKmgWg tools/xenmgr/setup.py
+40c9c4697z76HDfkCLdMhmaEwzFoNQ tools/xenmgr/xend
+40c9c469JkN47d1oXi-e0RjAP-C6uQ tools/xenmgr/xenmgrd
403a3edbrr8RE34gkbR40zep98SXbg tools/xentrace/Makefile
40a107afN60pFdURgBv9KwEzgRl5mQ tools/xentrace/formats
4050c413PhhLNAYk3TEwP37i_iLw9Q tools/xentrace/xentrace.8
linux-2.4.26-xen/.depend
linux-2.4.26-xen/.hdepend
linux-2.4.26-xen/.version
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+tools/xenmgr/lib/server/blkif.py~
+tools/xenmgr/lib/server/messages.py~
+tools/xenmgr/lib/server/netif.py~
$(MAKE) -C xentrace
$(MAKE) -C xenctl
$(MAKE) -C xend
+ $(MAKE) -C xenmgr
install: all
$(MAKE) -C balloon install
$(MAKE) -C xentrace install
$(MAKE) -C xenctl install
$(MAKE) -C xend install
+ $(MAKE) -C xenmgr install
dist: $(TARGET)
$(MAKE) prefix=`pwd`/../../install dist=yes install
$(MAKE) -C xentrace clean
$(MAKE) -C xenctl clean
$(MAKE) -C xend clean
+ $(MAKE) -C xenmgr install
--- /dev/null
+#!/usr/bin/env python
+
+import sys
+import re
+import string
+import time
+import os
+import os.path
+import signal
+
+from xenmgr.XendClient import server
+
+# usage: xc_dom_control [command] <params>
+#
+# this script isn't very smart, but it'll do for now.
+#
+
+def usage (rc=0):
+ if rc:
+ out = sys.stderr
+ else:
+ out = sys.stdout
+ print >> out, """
+Usage: %s [command] <params>
+
+ help -- print usage
+ stop [dom] -- pause a domain
+ start [dom] -- un-pause a domain
+ shutdown [dom] [[-w]] -- request a domain to shutdown (can specify 'all')
+ (optionally wait for complete shutdown)
+ destroy [dom] -- immediately terminate a domain
+ pincpu [dom] [cpu] -- pin a domain to the specified CPU
+ suspend [dom] [file] -- write domain's memory to a file and terminate
+ (resume by re-running xc_dom_create with -L option)
+ unwatch [dom] -- kill the auto-restart daemon for a domain
+ list -- print info about all domains
+ listvbds -- print info about all virtual block devs
+ cpu_bvtset [dom] [mcuadv] [warp] [warpl] [warpu]
+ -- set BVT scheduling parameters for domain
+ cpu_bvtslice [slice] -- set default BVT scheduler slice
+ cpu_atropos_set [dom] [period] [slice] [latency] [xtratime]
+ -- set Atropos scheduling parameters for domain
+ cpu_rrobin_slice [slice] -- set Round Robin scheduler slice
+ vif_stats [dom] [vif] -- get stats for a given network vif
+ vif_addip [dom] [vif] [ip] -- add an IP address to a given vif
+ vif_setsched [dom] [vif] [bytes] [usecs] -- rate limit vif bandwidth
+ vif_getsched [dom] [vif] -- print vif's scheduling parameters
+ vbd_add [dom] [uname] [dev] [mode] -- make disk/partition uname available to
+ domain as dev e.g. 'vbd_add 2 phy:sda3 hda1 w'
+ vbd_remove [dom] [dev] -- remove disk or partition attached as 'dev'
+""" % sys.argv[0]
+ if rc: sys.exit(rc)
+
+if len(sys.argv) < 2: usage(1)
+cmd = sys.argv[1]
+
+#todo: replace all uses of xc with the new api.
+import Xc; xc = Xc.new()
+
+rc = ''
+dom = None
+
+
+def auto_restart_pid_file(dom):
+ # The auto-restart daemon's pid file.
+ return '/var/run/xendomains/%d.pid' % dom
+
+def auto_restart_pid(dom):
+ watcher = auto_restart_pid_file(dom)
+ if os.path.isfile(watcher):
+ fd = open(watcher,'r')
+ pid = int(fd.readline())
+ else:
+ pid = None
+ return pid
+
+def auto_restart_kill(dom):
+ #todo: replace this - tell xend not to restart any more.
+ # Kill a domain's auto restart daemon.
+ pid = auto_restart_pid(dom)
+ if pid:
+ os.kill(pid, signal.SIGTERM)
+
+
+if len( sys.argv ) > 2 and re.match('\d+$', sys.argv[2]):
+ dom = long(sys.argv[2])
+
+if cmd == "help":
+ usage()
+
+elif cmd == 'stop':
+ rc = server.xend_domain_stop(dom)
+
+elif cmd == 'start':
+ rc = server.xend_domain_start(dom)
+
+elif cmd == 'shutdown':
+ doms = []
+ shutdown = []
+ if dom != None:
+ doms = [ dom ]
+ elif sys.argv[2] == 'all':
+ doms = server.xend_domains()
+ doms.remove('0')
+ for d in doms:
+ ret = server.xend_domain_shutdown(d)
+ if ret == 0:
+ shutdown.append(d)
+ else:
+ rc = ret
+
+ wait = (len(sys.argv) == 4 and sys.argv[3] == "-w")
+ if wait:
+ # wait for all domains we shut down to terminate
+ for dom in shutdown:
+ while True:
+ info = server.xend_domain(dom)
+ if not info: break
+ time.sleep(1)
+
+elif cmd == 'destroy':
+ rc = server.xend_domain_halt(dom)
+
+elif cmd == 'pincpu':
+ if len(sys.argv) < 4: usage(1)
+ cpu = int(sys.argv[3])
+ rc = server.xend_domain_pincpu(dom, cpu)
+
+elif cmd == 'list':
+ print 'Dom Name Mem(MB) CPU State Time(s)'
+ for dom in server.xend_domains():
+ info = server.xend_domain(dom)
+ d = {}
+ d['dom'] = dom
+ d['name'] = sxp.get_child_value(info, 'name', '??')
+ d['mem'] = int(sxp.get_child_value(info, 'memory', '0'))
+ d['cpu'] = int(sxp.get_child_value(info, 'cpu', '0'))
+ d['state'] = sxp.get_child_value(info, 'state', '??')
+ d['cpu_time'] = sxp.get_child_value(info, 'cpu_time', '0')
+ print ("%(dom)-4d %(name)-16s %(mem)7d %(cpu)3d %(state)5s %(cpu_time)8d"
+ % d)
+
+elif cmd == 'unwatch':
+ auto_restart_kill(dom)
+
+elif cmd == 'listvbds':
+ print 'Dom Dev Mode Size(MB)'
+ for dom in server.xend_domains():
+ for vbd in server.xend_domain_vbds(dom):
+ info = server.xend_domain_vbd(vbd)
+ v['vbd'] = vbd
+ v['size'] = int(sxp.get_child_value(info, 'size', '0'))
+ v['mode'] = sxp.get_child_value(info, 'mode', '??')
+ vbd['size_mb'] = vbd['nr_sectors'] / 2048
+ print ('%(dom)-4d %(vbd)04x %(mode)-2s %(size)d' % v)
+
+elif cmd == 'suspend':
+ if len(sys.argv) < 4: usage(1)
+ file = os.path.abspath(sys.argv[3])
+ auto_restart_kill(dom)
+ rc = server.xend_domain_save(dom, file, progress=1)
+
+elif cmd == 'cpu_bvtslice':
+ if len(sys.argv) < 3: usage(1)
+ slice = sys.argv[2]
+ rc = server.xend_node_cpu_bvt_slice_set(slice)
+
+elif cmd == 'cpu_bvtset':
+ if len(sys.argv) < 7: usage(1)
+ (mcuadv, warp, warpl, warpu) = map(int, sys.argv[3:7])
+
+ rc = server.xend_domain_cpu_bvt_set(dom, mcuadv, warp, warpl, warpu)
+
+elif cmd == 'vif_stats':
+ if len(sys.argv) < 4: usage(1)
+ vif = int(sys.argv[3])
+
+ print server.xend_domain_vif_stats(dom, vif)
+
+elif cmd == 'vif_addip':
+ if len(sys.argv) < 5: usage(1)
+ vif = int(sys.argv[3])
+ ip = sys.argv[4]
+ rc = server.xend_domain_vif_addip(dom, vif, ip)
+
+elif cmd == 'vif_setsched':
+ if len(sys.argv) < 6: usage(1)
+ (vif, bytes, usecs) = map(int, sys.argv[3:6])
+ rc = server.xend_domain_vif_scheduler_set(dom, vif, bytes, usecs)
+
+elif cmd == 'vif_getsched':
+ if len(sys.argv) < 4: usage(1)
+ vif = int(sys.argv[3])
+ print server.xend_domain_vif_scheduler_get(dom, vif)
+
+elif cmd == 'vbd_add':
+ if len(sys.argv) < 6: usage(1)
+ uname = sys.argv[3]
+ dev = sys.argv[4]
+ mode = sys.argv[5]
+ try:
+ vbd = server.xend_domain_vbd_add(dom, uname, dev, mode)
+ except StandardError, ex:
+ print "Error:", ex
+ sys.exit(1)
+ print "Added disk/partition %s to domain %d as device %s (%x)" % (uname, dom, dev, vbd)
+
+elif cmd == 'vbd_remove':
+ if len(sys.argv) < 4: usage(1)
+ dev = sys.argv[3]
+ vbd = server.xend_domain_vbd_remove(dom, dev)
+ if vbd < 0:
+ print "Failed"
+ sys.exit(1)
+ else:
+ print "Removed disk/partition attached as device %s (%x) in domain %d" % (dev, vbd, dom)
+
+elif cmd == 'cpu_atropos_set': # args: dom period slice latency xtratime
+ if len(sys.argv) < 6: usage(1)
+ (period, slice, latency, xtratime) = map(int, sys.argv[3:7])
+ rc = server.xend_domain_cpu_atropos_set(
+ dom, period, slice, latency, xtratime)
+
+elif cmd == 'cpu_rrobin_slice':
+ if len(sys.argv) < 3: usage(1)
+ slice = int(sys.argv[2])
+ rc = server.xend_node_rrobin_set(slice=slice)
+
+else:
+ usage(1)
+
+if rc != '':
+ print "return code %d" % rc
--- /dev/null
+#!/usr/bin/env python
+
+import string
+import sys
+import os
+import os.path
+import time
+import socket
+import getopt
+import signal
+import syslog
+
+import xenctl.console_client
+
+from xenmgr import sxp
+from xenmgr import PrettyPrint
+from xenmgr.XendClient import server
+
+config_dir = '/etc/xc/'
+config_file = xc_config_file = config_dir + 'defaults'
+
+def main_usage ():
+ print >>sys.stderr,"""
+Usage: %s <args>
+
+This tool is used to create and start new domains. It reads defaults
+from a file written in Python, having allowed variables to be set and
+passed into the file. Further command line arguments allow the
+defaults to be overridden. The defaults for each parameter are listed
+in [] brackets. Arguments are as follows:
+
+Arguments to control the parsing of the defaults file:
+ -f config_file -- Use the specified defaults script.
+ Default: ['%s']
+ -L state_file -- Load virtual machine memory state from state_file
+ -D foo=bar -- Set variable foo=bar before parsing config
+ E.g. '-D vmid=3;ip=1.2.3.4'
+ -h -- Print extended help message, including all arguments
+ -n -- Dry run only, don't actually create domain
+ Prints the config, suitable for -F.
+ -q -- Quiet - write output only to the system log
+ -F domain_config -- Build domain using the config in the file.
+ Suitable files can be made using '-n' to output a config.
+""" % (sys.argv[0], xc_config_file)
+
+def extra_usage ():
+ print >>sys.stderr,"""
+Arguments to override current config read from '%s':
+ -c -- Turn into console terminal after domain is created
+ -k image -- Path to kernel image ['%s']
+ -r ramdisk -- Path to ramdisk (or empty) ['%s']
+ -b builder_fn -- Function to use to build domain ['%s']
+ -m mem_size -- Initial memory allocation in MB [%dMB]
+ -N domain_name -- Set textual name of domain ['%s']
+ -a auto_restart -- Restart domain on exit, yes/no ['%d']
+ -e vbd_expert -- Safety catch to avoid some disk accidents ['%s']
+ -d udisk,dev,rw -- Add disk, partition, or virtual disk to domain. E.g. to
+ make partion sda4 available to the domain as hda1 with
+ read-write access: '-d phy:sda4,hda1,rw' To add
+ multiple disks use multiple -d flags or seperate with ';'
+ Default: ['%s']
+ -i vfr_ipaddr -- Add IP address to the list which Xen will route to
+ the domain. Use multiple times to add more IP addrs.
+ Default: ['%s']
+
+Args to override the kernel command line, which is concatenated from these:
+ -I cmdline_ip -- Override 'ip=ipaddr:nfsserv:gateway:netmask::eth0:off'
+ Default: ['%s']
+ -R cmdline_root -- Override root device parameters.
+ Default: ['%s']
+ -E cmdline_extra -- Override extra kernel args and rc script env vars.
+ Default: ['%s']
+
+""" % (config_file,
+ image, ramdisk, builder_fn, mem_size, domain_name, auto_restart,
+ vbd_expert,
+ printvbds( vbd_list ),
+ reduce ( (lambda a,b: a+':'+b), vfr_ipaddr,'' )[1:],
+ cmdline_ip, cmdline_root, cmdline_extra)
+
+def config_usage (): pass
+
+def answer ( s ):
+ s = string.lower(s)
+ if s == 'yes' or s == 'true' or s == '1': return 1
+ return 0
+
+def printvbds ( v ):
+ s=''
+ for (a,b,c) in v:
+ s = s + '; %s,%s,%s' % (a,b,c)
+ return s[2:]
+
+def output(string):
+ global quiet
+ syslog.syslog(string)
+ if not quiet:
+ print string
+ return
+
+bail=False; dryrun=False; extrahelp=False; quiet = False
+image=''; ramdisk=''; builder_fn='linux'; restore=0; state_file=''
+mem_size=0; domain_name=''; vfr_ipaddr=[];
+vbd_expert='rr'; auto_restart=False;
+vbd_list = []; cmdline_ip = ''; cmdline_root=''; cmdline_extra=''
+pci_device_list = []; console_port = -1
+auto_console = False
+config_from_file = False
+
+##### Determine location of defaults file
+#####
+
+try:
+ opts, args = getopt.getopt(sys.argv[1:], "h?nqcf:F:D:k:r:b:m:N:a:e:d:i:I:R:E:L:" )
+
+ for opt in opts:
+ if opt[0] == '-f': config_file= opt[1]
+ if opt[0] == '-h' or opt[0] == '-?' : bail=True; extrahelp=True
+ if opt[0] == '-n': dryrun=True
+ if opt[0] == '-D':
+ for o in string.split( opt[1], ';' ):
+ (l,r) = string.split( o, '=' )
+ exec "%s='%s'" % (l,r)
+ if opt[0] == '-q': quiet = True
+ if opt[0] == '-L': restore = True; state_file = opt[1]
+ if opt[0] == '-F': config_from_file = True; domain_config = opt[1]
+
+
+except getopt.GetoptError:
+ bail=True
+
+if not config_from_file:
+ try:
+ os.stat( config_file )
+ except:
+ try:
+ d = config_dir + config_file
+ os.stat( d )
+ config_file = d
+ except:
+ print >> sys.stderr, "Unable to open config file '%s'" % config_file
+ bail = True
+
+
+##### Parse the config file
+#####
+
+if not config_from_file:
+ if not quiet:
+ print "Parsing config file '%s'" % config_file
+
+ try:
+ execfile ( config_file )
+ except (AssertionError,IOError):
+ print >>sys.stderr,"Exiting %s" % sys.argv[0]
+ bail = True
+
+##### Print out config if necessary
+#####
+
+def bailout():
+ global extrahelp
+ main_usage()
+ config_usage()
+ if extrahelp: extra_usage()
+ sys.exit(1)
+
+if bail:
+ bailout()
+
+##### Parse any command line overrides
+#####
+
+x_vbd_list = []
+x_vfr_ipaddr = []
+
+for opt in opts:
+ if opt[0] == '-k': image = opt[1]
+ if opt[0] == '-r': ramdisk = opt[1]
+ if opt[0] == '-b': builder_fn = opt[1]
+ if opt[0] == '-m': mem_size = int(opt[1])
+ if opt[0] == '-C': cpu = int(opt[1])
+ if opt[0] == '-N': domain_name = opt[1]
+ if opt[0] == '-a': auto_restart = answer(opt[1])
+ if opt[0] == '-e': vbd_expert = opt[1]
+ if opt[0] == '-I': cmdline_ip = opt[1]
+ if opt[0] == '-R': cmdline_root = opt[1]
+ if opt[0] == '-E': cmdline_extra = opt[1]
+ if opt[0] == '-i': x_vfr_ipaddr.append(opt[1])
+ if opt[0] == '-c': auto_console = True
+ if opt[0] == '-d':
+ try:
+ vv = string.split(opt[1],';')
+ for v in vv:
+ (udisk,dev,mode) = string.split(v,',')
+ x_vbd_list.append( (udisk,dev,mode) )
+ except:
+ print >>sys.stderr, "Invalid block device specification : %s" % opt[1]
+ sys.exit(1)
+
+if x_vbd_list: vbd_list = x_vbd_list
+if x_vfr_ipaddr: vfr_ipaddr = x_vfr_ipaddr
+
+syslog.openlog('xc_dom_create.py %s' % config_file, 0, syslog.LOG_DAEMON)
+
+def strip(pre, s):
+ if s.startswith(pre):
+ return s[len(pre):]
+ else:
+ return s
+
+def make_domain_config():
+ global builder_fn, image, ramdisk, mem_size, domain_name
+ global cpu
+ global cmdline, cmdline_ip, cmdline_root
+ global vfr_ipaddr, vbd_list, vbd_expert
+
+ config = ['config',
+ ['name', domain_name ],
+ ['memory', mem_size ],
+ ]
+ if cpu:
+ config.append(['cpu', cpu])
+
+ config_image = [ builder_fn ]
+ config_image.append([ 'kernel', os.path.abspath(image) ])
+ if ramdisk:
+ config_image.append([ 'ramdisk', os.path.abspath(ramdisk) ])
+ if cmdline_ip:
+ cmdline_ip = strip("ip=", cmdline_ip)
+ config_image.append(['ip', cmdline_ip])
+ if cmdline_root:
+ cmdline_root = strip("root=", cmdline_root)
+ config_image.append(['root', cmdline_root])
+ if cmdline_extra:
+ config_image.append(['args', cmdline_extra])
+ config.append(['image', config_image ])
+
+ config_devs = []
+ for (uname, dev, mode) in vbd_list:
+ config_vbd = ['vbd',
+ ['uname', uname],
+ ['dev', dev ],
+ ['mode', mode ] ]
+ if vbd_expert != 'rr':
+ config_vbd.append(['sharing', vbd_expert])
+ config_devs.append(['device', config_vbd])
+
+ for (bus, dev, func) in pci_device_list:
+ config_pci = ['pci',
+ ['bus', bus ],
+ ['dev', dev ],
+ ['func', func] ]
+ config_devs.append(['device', config_pci])
+
+ config += config_devs
+
+ config_vfr = ['vfr']
+ idx = 0 # No way of saying which IP is for which vif?
+ for ip in vfr_ipaddr:
+ config_vfr.append(['vif', ['id', idx], ['ip', ip]])
+
+ config.append(config_vfr)
+ return config
+
+def parse_config_file(domain_file):
+ config = None
+ fin = None
+ try:
+ fin = file(domain_file, "rb")
+ config = sxp.parse(fin)
+ if len(config) >= 1:
+ config = config[0]
+ else:
+ raise StandardError("Invalid configuration")
+ except StandardError, ex:
+ print >> sys.stderr, "Error :", ex
+ sys.exit(1)
+ #finally:
+ if fin: fin.close()
+ return config
+
+# This function creates, builds and starts a domain, using the values
+# in the global variables, set above. It is used in the subsequent
+# code for starting the new domain and rebooting it if appropriate.
+def make_domain(config):
+ """Create, build and start a domain.
+ Returns: [int] the ID of the new domain.
+ """
+ global restore
+
+ if restore:
+ dominfo = server.xend_domain_restore(state_file, config)
+ else:
+ dominfo = server.xend_domain_create(config)
+
+ dom = int(sxp.child_value(dominfo, 'id'))
+ console_info = sxp.child(dominfo, 'console')
+ if console_info:
+ console_port = int(sxp.child_value(console_info, 'port'))
+ else:
+ console_port = None
+
+ if server.xend_domain_start(dom) < 0:
+ print "Error starting domain"
+ server.xend_domain_halt(dom)
+ sys.exit()
+
+ return (dom, console_port)
+
+PID_DIR = '/var/run/xendomains/'
+
+def pidfile(dom):
+ return PID_DIR + '%d.pid' % dom
+
+def mkpidfile():
+ global current_id
+ if not os.path.isdir(PID_DIR):
+ os.mkdir(PID_DIR)
+
+ fd = open(pidfile(current_id), 'w')
+ print >> fd, str(os.getpid())
+ fd.close()
+ return
+
+def rmpidfile():
+ global current_id
+ os.unlink(pidfile(current_id))
+
+def death_handler(dummy1,dummy2):
+ global current_id
+ os.unlink(pidfile(current_id))
+ output('Auto-restart daemon: daemon PID = %d for domain %d is now exiting'
+ % (os.getpid(), current_id))
+ sys.exit(0)
+ return
+
+#============================================================================
+# The starting / monitoring of the domain actually happens here...
+
+if config_from_file:
+ config = parse_config_file(domain_config)
+else:
+ config = make_domain_config()
+
+if dryrun:
+ print "# %s" % ' '.join(sys.argv)
+ PrettyPrint.prettyprint(config)
+ sys.exit(0)
+elif quiet:
+ pass
+else:
+ PrettyPrint.prettyprint(config)
+
+# start the domain and record its ID number
+(current_id, current_port) = make_domain(config)
+
+def start_msg(prefix, dom, port):
+ output(prefix + "VM started in domain %d" % dom)
+ if port:
+ output(prefix + "Console I/O available on TCP port %d." % port)
+
+start_msg('', current_id, current_port)
+
+if current_port and auto_console:
+ xenctl.console_client.connect('127.0.0.1', current_port)
+
+# if the auto_restart flag is set then keep polling to see if the domain is
+# alive - restart if it is not by calling make_domain() again (it's necessary
+# to update the id variable, since the new domain may have a new ID)
+
+#todo: Replace this - get xend to watch them.
+if auto_restart:
+ ARD = "Auto-restart daemon: "
+ # turn ourselves into a background daemon
+ try:
+ pid = os.fork()
+ if pid > 0:
+ sys.exit(0)
+ os.setsid()
+ pid = os.fork()
+ if pid > 0:
+ output(ARD + 'PID = %d' % pid)
+ sys.exit(0)
+ signal.signal(signal.SIGTERM,death_handler)
+ except OSError:
+ print >> sys.stderr, ARD+'Startup failed'
+ sys.exit(1)
+
+ mkpidfile()
+
+ while True:
+ time.sleep(1)
+ # todo: use new interface
+ info = xc.domain_getinfo(current_id, 1)
+ if info == [] or info[0]['dom'] != current_id:
+ output(ARD + "Domain %d terminated, restarting VM in new domain"
+ % current_id)
+ rmpidfile()
+ (current_id, current_port) = make_domain()
+ mkpidfile()
+ start_msg(ARD, current_id, current_port)
--- /dev/null
+#!/usr/bin/env python
+
+import sys
+import re
+import string
+
+from xenctl import vdisk
+
+def usage():
+
+ print >>sys.stderr,"""
+Usage: %s command <params>
+
+ initialise [dev] [[ext_size]] - init. a physcial partition to store vd's
+ create [size] [[expiry]] - allocate a vd of specified size (and expiry)
+ enlarge [vdid] [extra_size] - enlarge a specified vd by some amount
+ delete [vdid] - delete a vd
+ import [filename] [[expiry]] - create a vd and populate w/ image from file
+ export [vdid] [filename] - copy vd's contents to a file
+ setexpiry [vdid] [[expiry]] - update the expiry time for a vd
+ list - list all the unexpired virtual disks
+ undelete [vdid] [[expiry]] - attempts to recover an expired vd
+ freespace - print out the amount of space in free pool
+
+notes:
+ vdid - the virtual disk's identity string
+ size - measured in MB
+ expiry - is the expiry time of the virtual disk in seconds from now
+ (0 = don't expire)
+ device - physical partition to 'format' to hold vd's. e.g. hda4
+ ext_size - extent size (default 64MB)
+""" % sys.argv[0]
+
+if len(sys.argv) < 2:
+ usage()
+ sys.exit(-1)
+
+rc=''
+src=''
+expiry_time = 0
+cmd = sys.argv[1]
+
+if cmd == 'initialise':
+
+ dev = sys.argv[2]
+
+ if len(sys.argv) > 3:
+ extent_size = int(sys.argv[3])
+ else:
+ print """No extent size specified - using default size of 64MB"""
+ extent_size = 64
+
+ print "Formatting for virtual disks"
+ print "Device: " + dev
+ print "Extent size: " + str(extent_size) + "MB"
+
+ rc = vdisk.vd_format(dev, extent_size)
+
+elif cmd == 'create':
+
+ size = int(sys.argv[2])
+
+ if len(sys.argv) > 3:
+ expiry_time = int(sys.argv[3])
+
+ print "Creating a virtual disk"
+ print "Size: %d" % size
+ print "Expiry time (seconds from now): %d" % expiry_time
+
+ src = vdisk.vd_create(size, expiry_time)
+
+elif cmd == 'enlarge':
+
+ id = sys.argv[2]
+
+ extra_size = int(sys.argv[3])
+
+ rc = vdisk.vd_enlarge(id, extra_size)
+
+elif cmd == 'delete':
+
+ id = sys.argv[2]
+
+ print "Deleting a virtual disk with ID: " + id
+
+ rc = vdisk.vd_delete(id)
+
+elif cmd == 'import':
+
+ file = sys.argv[2]
+
+ if len(sys.argv) > 3:
+ expiry_time = int(sys.argv[3])
+
+ print "Allocate new virtual disk and populate from file : %s" % file
+
+ print vdisk.vd_read_from_file(file, expiry_time)
+
+elif cmd == 'export':
+
+ id = sys.argv[2]
+ file = sys.argv[3]
+
+ print "Dump contents of virtual disk to file : %s" % file
+
+ rc = vdisk.vd_cp_to_file(id, file )
+
+elif cmd == 'setexpiry':
+
+ id = sys.argv[2]
+
+ if len(sys.argv) > 3:
+ expiry_time = int(sys.argv[3])
+
+ print "Refreshing a virtual disk"
+ print "Id: " + id
+ print "Expiry time (seconds from now [or 0]): " + str(expiry_time)
+
+ rc = vdisk.vd_refresh(id, expiry_time)
+
+elif cmd == 'list':
+ print 'ID Size(MB) Expiry'
+
+ for vbd in vdisk.vd_list():
+ vbd['size_mb'] = vbd['size'] / vdisk.VBD_SECTORS_PER_MB
+ vbd['expiry'] = (vbd['expires'] and vbd['expiry_time']) or 'never'
+ print '%(vdisk_id)-4s %(size_mb)-12d %(expiry)s' % vbd
+
+elif cmd == 'freespace':
+
+ print vdisk.vd_freespace()
+
+elif cmd == 'undelete':
+
+ id = sys.argv[2]
+
+ if len(sys.argv) > 3:
+ expiry_time = int(sys.argv[3])
+
+ if vdisk.vd_undelete(id, expiry_time):
+ print "Undelete operation failed for virtual disk: " + id
+ else:
+ print "Undelete operation succeeded for virtual disk: " + id
+
+else:
+ usage()
+ sys.exit(-1)
+
+
+if src != '':
+ print "Returned virtual disk id is : %s" % src
+
+if rc != '':
+ print "return code %d" % rc
+
+
+
--- /dev/null
+import os
+import re
+import socket
+import struct
+
+##### Networking-related functions
+
+def get_current_ipaddr(dev='eth0'):
+ """Return a string containing the primary IP address for the given
+ network interface (default 'eth0').
+ """
+ fd = os.popen( '/sbin/ifconfig ' + dev + ' 2>/dev/null' )
+ lines = readlines(fd)
+ for line in lines:
+ m = re.search( '^\s+inet addr:([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+).*',
+ line )
+ if m:
+ return m.group(1)
+ return None
+
+def get_current_ipmask(dev='eth0'):
+ """Return a string containing the primary IP netmask for the given
+ network interface (default 'eth0').
+ """
+ fd = os.popen( '/sbin/ifconfig ' + dev + ' 2>/dev/null' )
+ lines = readlines(fd)
+ for line in lines:
+ m = re.search( '^.+Mask:([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+).*',
+ line )
+ if m:
+ return m.group(1)
+ return None
+
+def get_current_ipgw(dev='eth0'):
+ """Return a string containing the IP gateway for the given
+ network interface (default 'eth0').
+ """
+ fd = os.popen( '/sbin/route -n' )
+ lines = readlines(fd)
+ for line in lines:
+ m = re.search( '^\S+\s+([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)' +
+ '\s+\S+\s+\S*G.*' + dev + '.*', line )
+ if m:
+ return m.group(1)
+ return None
+
+def setup_vfr_rules_for_vif(dom,vif,addr):
+ """Takes a tuple ( domain-id, vif-id, ip-addr ), where the ip-addr
+ is expressed as a textual dotted quad, and set up appropriate routing
+ rules in Xen. No return value.
+ """
+ fd = os.open( '/proc/xen/vfr', os.O_WRONLY )
+ if ( re.search( '169\.254', addr) ):
+ os.write( fd, 'ADD ACCEPT srcaddr=' + addr +
+ ' srcaddrmask=255.255.255.255' +
+ ' srcdom=' + str(dom) + ' srcidx=' + str(vif) +
+ ' dstdom=0 dstidx=0 proto=any\n' )
+ else:
+ os.write( fd, 'ADD ACCEPT srcaddr=' + addr +
+ ' srcaddrmask=255.255.255.255' +
+ ' srcdom=' + str(dom) + ' srcidx=' + str(vif) +
+ ' dst=PHYS proto=any\n' )
+ os.write( fd, 'ADD ACCEPT dstaddr=' + addr +
+ ' dstaddrmask=255.255.255.255' +
+ ' src=ANY' +
+ ' dstdom=' + str(dom) + ' dstidx=' + str(vif) +
+ ' proto=any\n' )
+ os.close( fd )
+ return None
+
+def inet_aton(addr):
+ """Convert an IP addr in IPv4 dot notation into an int.
+ """
+ b = socket.inet_aton(addr)
+ return struct.unpack('!I', b)[0]
+
+def inet_ntoa(n):
+ """Convert an int into an IP addr in IPv4 dot notation.
+ """
+ b = struct.pack('!I', n)
+ return socket.inet_ntoa(b)
+
+def add_offset_to_ip(addr, offset):
+ """Add a numerical offset to an IP addr in IPv4 dot notation.
+ """
+ n = inet_aton(addr)
+ n += offset
+ return inet_ntoa(n)
+
+def check_subnet( ip, network, netmask ):
+ n_ip = inet_aton(ip)
+ n_net = inet_aton(network)
+ n_mask = inet_aton(netmask)
+ return (n_ip & n_mask) == (n_net & n_mask)
+
--- /dev/null
+import os
+import re
+import socket
+import string
+import sys
+import tempfile
+import struct
+
+##### Module variables
+
+"""Location of the Virtual Disk management database.
+ defaults to /var/db/xen_vdisks.sqlite
+"""
+VD_DB_FILE = "/var/db/xen_vdisks.sqlite"
+
+"""VBD expertise level - determines the strictness of the sanity checking.
+ This mode determines the level of complaints when disk sharing occurs
+ through the current VBD mappings.
+ 0 - only allow shared mappings if both domains have r/o access (always OK)
+ 1 - also allow sharing with one dom r/w and the other r/o
+ 2 - allow sharing with both doms r/w
+"""
+VBD_SAFETY_RR = 0
+VBD_SAFETY_RW = 1
+VBD_SAFETY_WW = 2
+
+VBD_SECTORS_PER_MB = 2048
+
+##### Module initialisation
+
+try:
+ # try to import sqlite (not everyone will have it installed)
+ import sqlite
+except ImportError:
+ # on failure, just catch the error, don't do anything
+ pass
+
+
+
+##### VBD-related Functions
+
+def blkdev_name_to_number(name):
+ """Take the given textual block-device name (e.g., '/dev/sda1',
+ 'hda') and return the device number used by the OS. """
+
+ if not re.match( '/dev/', name ):
+ name = '/dev/' + name
+
+ return os.stat(name).st_rdev
+
+# lookup_blkdev_partn_info( '/dev/sda3' )
+def lookup_raw_partn(partition):
+ """Take the given block-device name (e.g., '/dev/sda1', 'hda')
+ and return a dictionary { device, start_sector,
+ nr_sectors, type }
+ device: Device number of the given partition
+ start_sector: Index of first sector of the partition
+ nr_sectors: Number of sectors comprising this partition
+ type: 'Disk' or identifying name for partition type
+ """
+
+ if not re.match( '/dev/', partition ):
+ partition = '/dev/' + partition
+
+ drive = re.split( '[0-9]', partition )[0]
+
+ if drive == partition:
+ fd = os.popen( '/sbin/sfdisk -s ' + drive + ' 2>/dev/null' )
+ line = readline(fd)
+ if line:
+ return [ { 'device' : blkdev_name_to_number(drive),
+ 'start_sector' : long(0),
+ 'nr_sectors' : long(line) * 2,
+ 'type' : 'Disk' } ]
+ return None
+
+ # determine position on disk
+ fd = os.popen( '/sbin/sfdisk -d ' + drive + ' 2>/dev/null' )
+
+ #['/dev/sda3 : start= 16948575, size=16836120, Id=83, bootable\012']
+ lines = readlines(fd)
+ for line in lines:
+ m = re.search( '^' + partition + '\s*: start=\s*([0-9]+), ' +
+ 'size=\s*([0-9]+), Id=\s*(\S+).*$', line)
+ if m:
+ return [ { 'device' : blkdev_name_to_number(drive),
+ 'start_sector' : long(m.group(1)),
+ 'nr_sectors' : long(m.group(2)),
+ 'type' : m.group(3) } ]
+
+ return None
+
+def lookup_disk_uname( uname ):
+ """Lookup a list of segments for either a physical or a virtual device.
+ uname [string]: name of the device in the format \'vd:id\' for a virtual
+ disk, or \'phy:dev\' for a physical device
+ returns [list of dicts]: list of extents that make up the named device
+ """
+ ( type, d_name ) = string.split( uname, ':' )
+
+ if type == "phy":
+ segments = lookup_raw_partn( d_name )
+ elif type == "vd":
+ segments = vd_lookup( d_name )
+
+ return segments
+
+
+##### VD Management-related functions
+
+##### By Mark Williamson, <mark.a.williamson@intel.com>
+##### (C) Intel Research Cambridge
+
+# TODO:
+#
+# Plenty of room for enhancement to this functionality (contributions
+# welcome - and then you get to have your name in the source ;-)...
+#
+# vd_unformat() : want facilities to unallocate virtual disk
+# partitions, possibly migrating virtual disks of them, with checks to see if
+# it's safe and options to force it anyway
+#
+# vd_create() : should have an optional argument specifying a physical
+# disk preference - useful to allocate for guest doms to do RAID
+#
+# vd_undelete() : add ability to "best effort" undelete as much of a
+# vdisk as is left in the case that some of it has already been
+# reallocated. Some people might still be able to recover some of
+# their data this way, even if some of the disk has disappeared.
+#
+# It'd be nice if we could wipe virtual disks for security purposes -
+# should be easy to do this using dev if=/dev/{zero,random} on each
+# extent in turn. There could be another optional flag to vd_create
+# in order to allow this.
+#
+# Error codes could be more expressive - i.e. actually tell why the
+# error occurred rather than "it broke". Currently the code avoids
+# using exceptions to make control scripting simpler and more
+# accessible to beginners - therefore probably should just use more
+# return codes.
+#
+# Enhancements / additions to the example scripts are also welcome:
+# some people will interact with this code mostly through those
+# scripts.
+#
+# More documentation of how this stuff should be used is always nice -
+# if you have a novel configuration that you feel isn't discussed
+# enough in the HOWTO (which is currently a work in progress), feel
+# free to contribute a walkthrough, or something more substantial.
+#
+
+
+def __vd_no_database():
+ """Called when no database found - exits with an error
+ """
+ print >> sys.stderr, "ERROR: Could not locate the database file at " + VD_DB_FILE
+ sys.exit(1)
+
+def readlines(fd):
+ """Version of readlines safe against EINTR.
+ """
+ import errno
+
+ lines = []
+ while 1:
+ try:
+ line = fd.readline()
+ except IOError, ex:
+ if ex.errno == errno.EINTR:
+ continue
+ else:
+ raise
+ if line == '': break
+ lines.append(line)
+ return lines
+
+def readline(fd):
+ """Version of readline safe against EINTR.
+ """
+ while 1:
+ try:
+ return fd.readline()
+ except IOError, ex:
+ if ex.errno == errno.EINTR:
+ continue
+ else:
+ raise
+
+
+def vd_format(partition, extent_size_mb):
+ """Format a partition or drive for use a virtual disk storage.
+ partition [string]: device file representing the partition
+ extent_size_mb [string]: extent size in megabytes to use on this disk
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ vd_init_db(VD_DB_FILE)
+
+ if not re.match( '/dev/', partition ):
+ partition = '/dev/' + partition
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("select * from vdisk_part where partition = \'"
+ + partition + "\'")
+ row = cu.fetchone()
+
+ extent_size = extent_size_mb * VBD_SECTORS_PER_MB # convert megabytes to sectors
+
+ if not row:
+ part_info = lookup_raw_partn(partition)[0]
+
+ cu.execute("INSERT INTO vdisk_part(partition, part_id, extent_size) " +
+ "VALUES ( \'" + partition + "\', "
+ + str(blkdev_name_to_number(partition))
+ + ", " + str(extent_size) + ")")
+
+
+ cu.execute("SELECT max(vdisk_extent_no) FROM vdisk_extents "
+ + "WHERE vdisk_id = 0")
+
+ max_id, = cu.fetchone()
+
+ if max_id != None:
+ new_id = max_id + 1
+ else:
+ new_id = 0
+
+ num_extents = part_info['nr_sectors'] / extent_size
+
+ for i in range(num_extents):
+ sql ="""INSERT INTO vdisk_extents(vdisk_extent_no, vdisk_id,
+ part_id, part_extent_no)
+ VALUES ("""+ str(new_id + i) + ", 0, "\
+ + str(blkdev_name_to_number(partition))\
+ + ", " + str(num_extents - (i + 1)) + ")"
+ cu.execute(sql)
+
+ cx.commit()
+ cx.close()
+ return 0
+
+
+def vd_create(size_mb, expiry):
+ """Create a new virtual disk.
+ size_mb [int]: size in megabytes for the new virtual disk
+ expiry [int]: expiry time in seconds from now
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ size = size_mb * VBD_SECTORS_PER_MB
+
+ cu.execute("SELECT max(vdisk_id) FROM vdisks")
+ max_id, = cu.fetchone()
+ new_id = int(max_id) + 1
+
+ # fetch a list of extents from the expired disks, along with information
+ # about their size
+ cu.execute("""SELECT vdisks.vdisk_id, vdisk_extent_no, part_extent_no,
+ vdisk_extents.part_id, extent_size
+ FROM vdisks NATURAL JOIN vdisk_extents
+ NATURAL JOIN vdisk_part
+ WHERE expires AND expiry_time <= datetime('now')
+ ORDER BY expiry_time ASC, vdisk_extent_no DESC
+ """) # aims to reuse the last extents
+ # from the longest-expired disks first
+
+ allocated = 0
+
+ if expiry:
+ expiry_ts = "datetime('now', '" + str(expiry) + " seconds')"
+ expires = 1
+ else:
+ expiry_ts = "NULL"
+ expires = 0
+
+ # we'll use this to build the SQL statement we want
+ building_sql = "INSERT INTO vdisks(vdisk_id, size, expires, expiry_time)" \
+ +" VALUES ("+str(new_id)+", "+str(size)+ ", " \
+ + str(expires) + ", " + expiry_ts + "); "
+
+ counter = 0
+
+ while allocated < size:
+ row = cu.fetchone()
+ if not row:
+ print "ran out of space, having allocated %d meg of %d" % (allocated, size)
+ cx.close()
+ return -1
+
+
+ (vdisk_id, vdisk_extent_no, part_extent_no, part_id, extent_size) = row
+ allocated += extent_size
+ building_sql += "UPDATE vdisk_extents SET vdisk_id = " + str(new_id) \
+ + ", " + "vdisk_extent_no = " + str(counter) \
+ + " WHERE vdisk_extent_no = " + str(vdisk_extent_no) \
+ + " AND vdisk_id = " + str(vdisk_id) + "; "
+
+ counter += 1
+
+
+ # this will execute the SQL query we build to store details of the new
+ # virtual disk and allocate space to it print building_sql
+ cu.execute(building_sql)
+
+ cx.commit()
+ cx.close()
+ return str(new_id)
+
+
+def vd_lookup(id):
+ """Lookup a Virtual Disk by ID.
+ id [string]: a virtual disk identifier
+ Returns [list of dicts]: a list of extents as dicts, containing fields:
+ device : Linux device number of host disk
+ start_sector : within the device
+ nr_sectors : size of this extent
+ type : set to \'VD Extent\'
+
+ part_device : Linux device no of host partition
+ part_start_sector : within the partition
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("-- types int")
+ cu.execute("""SELECT COUNT(*)
+ FROM vdisks
+ WHERE (expiry_time > datetime('now') OR NOT expires)
+ AND vdisk_id = """ + id)
+ count, = cu.fetchone()
+
+ if not count:
+ cx.close()
+ return None
+
+ cu.execute("SELECT size from vdisks WHERE vdisk_id = " + id)
+ real_size, = cu.fetchone()
+
+ # This query tells PySQLite how to convert the data returned from the
+ # following query - the use of the multiplication confuses it otherwise ;-)
+ # This row is significant to PySQLite but is syntactically an SQL comment.
+
+ cu.execute("-- types str, int, int, int")
+
+ # This SQL statement is designed so that when the results are fetched they
+ # will be in the right format to return immediately.
+ cu.execute("""SELECT partition, vdisk_part.part_id,
+ round(part_extent_no * extent_size) as start,
+ extent_size
+
+ FROM vdisks NATURAL JOIN vdisk_extents
+ NATURAL JOIN vdisk_part
+
+ WHERE vdisk_extents.vdisk_id = """ + id
+ + " ORDER BY vdisk_extents.vdisk_extent_no ASC"
+ )
+
+ extent_tuples = cu.fetchall()
+
+ # use this function to map the results from the database into a dict
+ # list of extents, for consistency with the rest of the code
+ def transform ((partition, part_device, part_offset, nr_sectors)):
+ return {
+ # the disk device this extent is on - for passing to Xen
+ 'device' : lookup_raw_partn(partition)[0]['device'],
+ # the offset of this extent within the disk - for passing to Xen
+ 'start_sector' : long(part_offset + lookup_raw_partn(partition)[0]['start_sector']),
+ # extent size, in sectors
+ 'nr_sectors' : nr_sectors,
+ # partition device this extent is on (useful to know for xenctl.utils fns)
+ 'part_device' : part_device,
+ # start sector within this partition (useful to know for xenctl.utils fns)
+ 'part_start_sector' : part_offset,
+ # type of this extent - handy to know
+ 'type' : 'VD Extent' }
+
+ cx.commit()
+ cx.close()
+
+ extent_dicts = map(transform, extent_tuples)
+
+ # calculate the over-allocation in sectors (happens because
+ # we allocate whole extents)
+ allocated_size = 0
+ for i in extent_dicts:
+ allocated_size += i['nr_sectors']
+
+ over_allocation = allocated_size - real_size
+
+ # trim down the last extent's length so the resulting VBD will be the
+ # size requested, rather than being rounded up to the nearest extent
+ extent_dicts[len(extent_dicts) - 1]['nr_sectors'] -= over_allocation
+
+ return extent_dicts
+
+
+def vd_enlarge(vdisk_id, extra_size_mb):
+ """Create a new virtual disk.
+ vdisk_id [string] : ID of the virtual disk to enlarge
+ extra_size_mb [int]: size in megabytes to increase the allocation by
+ returns [int] : 0 on success, otherwise non-zero
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ extra_size = extra_size_mb * VBD_SECTORS_PER_MB
+
+ cu.execute("-- types int")
+ cu.execute("SELECT COUNT(*) FROM vdisks WHERE vdisk_id = " + vdisk_id
+ + " AND (expiry_time > datetime('now') OR NOT expires)")
+ count, = cu.fetchone()
+
+ if not count: # no such vdisk
+ cx.close()
+ return -1
+
+ cu.execute("-- types int")
+ cu.execute("""SELECT SUM(extent_size)
+ FROM vdisks NATURAL JOIN vdisk_extents
+ NATURAL JOIN vdisk_part
+ WHERE vdisks.vdisk_id = """ + vdisk_id)
+
+ real_size, = cu.fetchone() # get the true allocated size
+
+ cu.execute("-- types int")
+ cu.execute("SELECT size FROM vdisks WHERE vdisk_id = " + vdisk_id)
+
+ old_size, = cu.fetchone()
+
+
+ cu.execute("--- types int")
+ cu.execute("""SELECT MAX(vdisk_extent_no)
+ FROM vdisk_extents
+ WHERE vdisk_id = """ + vdisk_id)
+
+ counter = cu.fetchone()[0] + 1 # this stores the extent numbers
+
+
+ # because of the extent-based allocation, the VD may already have more
+ # allocated space than they asked for. Find out how much we really
+ # need to add.
+ add_size = extra_size + old_size - real_size
+
+ # fetch a list of extents from the expired disks, along with information
+ # about their size
+ cu.execute("""SELECT vdisks.vdisk_id, vdisk_extent_no, part_extent_no,
+ vdisk_extents.part_id, extent_size
+ FROM vdisks NATURAL JOIN vdisk_extents
+ NATURAL JOIN vdisk_part
+ WHERE expires AND expiry_time <= datetime('now')
+ ORDER BY expiry_time ASC, vdisk_extent_no DESC
+ """) # aims to reuse the last extents
+ # from the longest-expired disks first
+
+ allocated = 0
+
+ building_sql = "UPDATE vdisks SET size = " + str(old_size + extra_size)\
+ + " WHERE vdisk_id = " + vdisk_id + "; "
+
+ while allocated < add_size:
+ row = cu.fetchone()
+ if not row:
+ cx.close()
+ return -1
+
+ (dead_vd_id, vdisk_extent_no, part_extent_no, part_id, extent_size) = row
+ allocated += extent_size
+ building_sql += "UPDATE vdisk_extents SET vdisk_id = " + vdisk_id \
+ + ", " + "vdisk_extent_no = " + str(counter) \
+ + " WHERE vdisk_extent_no = " + str(vdisk_extent_no) \
+ + " AND vdisk_id = " + str(dead_vd_id) + "; "
+
+ counter += 1
+
+
+ # this will execute the SQL query we build to store details of the new
+ # virtual disk and allocate space to it print building_sql
+ cu.execute(building_sql)
+
+ cx.commit()
+ cx.close()
+ return 0
+
+
+def vd_undelete(vdisk_id, expiry_time):
+ """Create a new virtual disk.
+ vdisk_id [int]: size in megabytes for the new virtual disk
+ expiry_time [int]: expiry time, in seconds from now
+ returns [int]: zero on success, non-zero on failure
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ if vdisk_id == '0': # undeleting vdisk 0 isn't sane!
+ return -1
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("-- types int")
+ cu.execute("SELECT COUNT(*) FROM vdisks WHERE vdisk_id = " + vdisk_id)
+ count, = cu.fetchone()
+
+ if not count:
+ cx.close()
+ return -1
+
+ cu.execute("-- types int")
+ cu.execute("""SELECT SUM(extent_size)
+ FROM vdisks NATURAL JOIN vdisk_extents
+ NATURAL JOIN vdisk_part
+ WHERE vdisks.vdisk_id = """ + vdisk_id)
+
+ real_size, = cu.fetchone() # get the true allocated size
+
+
+ cu.execute("-- types int")
+ cu.execute("SELECT size FROM vdisks WHERE vdisk_id = " + vdisk_id)
+
+ old_size, = cu.fetchone()
+
+ if real_size < old_size:
+ cx.close()
+ return -1
+
+ if expiry_time == 0:
+ expires = '0'
+ else:
+ expires = '1'
+
+ # this will execute the SQL query we build to store details of the new
+ # virtual disk and allocate space to it print building_sql
+ cu.execute("UPDATE vdisks SET expiry_time = datetime('now','"
+ + str(expiry_time) + " seconds'), expires = " + expires
+ + " WHERE vdisk_id = " + vdisk_id)
+
+ cx.commit()
+ cx.close()
+ return 0
+
+
+
+
+def vd_list():
+ """Lists all the virtual disks registered in the system.
+ returns [list of dicts]
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("""SELECT vdisk_id, size, expires, expiry_time
+ FROM vdisks
+ WHERE (NOT expires) OR expiry_time > datetime('now')
+ """)
+
+ ret = cu.fetchall()
+
+ cx.close()
+
+ def makedicts((vdisk_id, size, expires, expiry_time)):
+ return { 'vdisk_id' : str(vdisk_id), 'size': size,
+ 'expires' : expires, 'expiry_time' : expiry_time }
+
+ return map(makedicts, ret)
+
+
+def vd_refresh(id, expiry):
+ """Change the expiry time of a virtual disk.
+ id [string] : a virtual disk identifier
+ expiry [int] : expiry time in seconds from now (0 = never expire)
+ returns [int]: zero on success, non-zero on failure
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("-- types int")
+ cu.execute("SELECT COUNT(*) FROM vdisks WHERE vdisk_id = " + id
+ + " AND (expiry_time > datetime('now') OR NOT expires)")
+ count, = cu.fetchone()
+
+ if not count:
+ cx.close()
+ return -1
+
+ if expiry:
+ expires = 1
+ expiry_ts = "datetime('now', '" + str(expiry) + " seconds')"
+ else:
+ expires = 0
+ expiry_ts = "NULL"
+
+ cu.execute("UPDATE vdisks SET expires = " + str(expires)
+ + ", expiry_time = " + expiry_ts
+ + " WHERE (expiry_time > datetime('now') OR NOT expires)"
+ + " AND vdisk_id = " + id)
+
+ cx.commit()
+ cx.close()
+
+ return 0
+
+
+def vd_delete(id):
+ """Deletes a Virtual Disk, making its extents available for future VDs.
+ id [string] : identifier for the virtual disk to delete
+ returns [int] : 0 on success, -1 on failure (VD not found
+ or already deleted)
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("-- types int")
+ cu.execute("SELECT COUNT(*) FROM vdisks WHERE vdisk_id = " + id
+ + " AND (expiry_time > datetime('now') OR NOT expires)")
+ count, = cu.fetchone()
+
+ if not count:
+ cx.close()
+ return -1
+
+ cu.execute("UPDATE vdisks SET expires = 1, expiry_time = datetime('now')"
+ + " WHERE vdisk_id = " + id)
+
+ cx.commit()
+ cx.close()
+
+ return 0
+
+
+def vd_freespace():
+ """Returns the amount of free space available for new virtual disks, in MB
+ returns [int] : free space for VDs in MB
+ """
+
+ if not os.path.isfile(VD_DB_FILE):
+ __vd_no_database()
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("-- types int")
+
+ cu.execute("""SELECT SUM(extent_size)
+ FROM vdisks NATURAL JOIN vdisk_extents
+ NATURAL JOIN vdisk_part
+ WHERE expiry_time <= datetime('now') AND expires""")
+
+ sum, = cu.fetchone()
+
+ cx.close()
+
+ return sum / VBD_SECTORS_PER_MB
+
+
+def vd_init_db(path):
+ """Initialise the VD SQLite database
+ path [string]: path to the SQLite database file
+ """
+
+ cx = sqlite.connect(path)
+ cu = cx.cursor()
+
+ cu.execute(
+ """CREATE TABLE vdisk_extents
+ ( vdisk_extent_no INT,
+ vdisk_id INT,
+ part_id INT,
+ part_extent_no INT )
+ """)
+
+ cu.execute(
+ """CREATE TABLE vdisk_part
+ ( part_id INT,
+ partition VARCHAR,
+ extent_size INT )
+ """)
+
+ cu.execute(
+ """CREATE TABLE vdisks
+ ( vdisk_id INT,
+ size INT,
+ expires BOOLEAN,
+ expiry_time TIMESTAMP )
+ """)
+
+
+ cu.execute(
+ """INSERT INTO vdisks ( vdisk_id, size, expires, expiry_time )
+ VALUES ( 0, 0, 1, datetime('now') )
+ """)
+
+ cx.commit()
+ cx.close()
+
+ VD_DB_FILE = path
+
+
+
+def vd_cp_to_file(vdisk_id,filename):
+ """Writes the contents of a specified vdisk out into a disk file, leaving
+ the original copy in the virtual disk pool."""
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ extents = vd_lookup(vdisk_id)
+
+ if not extents:
+ return -1
+
+ file_idx = 0 # index into source file, in sectors
+
+ for i in extents:
+ cu.execute("""SELECT partition, extent_size FROM vdisk_part
+ WHERE part_id = """ + str(i['part_device']))
+
+ (partition, extent_size) = cu.fetchone()
+
+ os.system("dd bs=1b if=" + partition + " of=" + filename
+ + " skip=" + str(i['part_start_sector'])
+ + " seek=" + str(file_idx)
+ + " count=" + str(i['nr_sectors'])
+ + " > /dev/null")
+
+ file_idx += i['nr_sectors']
+
+ cx.close()
+
+ return 0 # should return -1 if something breaks
+
+
+def vd_mv_to_file(vdisk_id,filename):
+ """Writes a vdisk out into a disk file and frees the space originally
+ taken within the virtual disk pool.
+ vdisk_id [string]: ID of the vdisk to write out
+ filename [string]: file to write vdisk contents out to
+ returns [int]: zero on success, nonzero on failure
+ """
+
+ if vd_cp_to_file(vdisk_id,filename):
+ return -1
+
+ if vd_delete(vdisk_id):
+ return -1
+
+ return 0
+
+
+def vd_read_from_file(filename,expiry):
+ """Reads the contents of a file directly into a vdisk, which is
+ automatically allocated to fit.
+ filename [string]: file to read disk contents from
+ returns [string] : vdisk ID for the destination vdisk
+ """
+
+ size_bytes = os.stat(filename).st_size
+
+ (size_mb,leftover) = divmod(size_bytes,1048580) # size in megabytes
+ if leftover > 0: size_mb += 1 # round up if not an exact number of MB
+
+ vdisk_id = vd_create(size_mb, expiry)
+
+ if vdisk_id < 0:
+ return -1
+
+ cx = sqlite.connect(VD_DB_FILE)
+ cu = cx.cursor()
+
+ cu.execute("""SELECT partition, extent_size, part_extent_no
+ FROM vdisk_part NATURAL JOIN vdisk_extents
+ WHERE vdisk_id = """ + vdisk_id + """
+ ORDER BY vdisk_extent_no ASC""")
+
+ extents = cu.fetchall()
+
+ size_sectors = size_mb * VBD_SECTORS_PER_MB # for feeding to dd
+
+ file_idx = 0 # index into source file, in sectors
+
+ def write_extent_to_vd((partition, extent_size, part_extent_no),
+ file_idx, filename):
+ """Write an extent out to disk and update file_idx"""
+
+ os.system("dd bs=512 if=" + filename + " of=" + partition
+ + " skip=" + str(file_idx)
+ + " seek=" + str(part_extent_no * extent_size)
+ + " count=" + str(min(extent_size, size_sectors - file_idx))
+ + " > /dev/null")
+
+ return extent_size
+
+ for i in extents:
+ file_idx += write_extent_to_vd(i, file_idx, filename)
+
+ cx.close()
+
+ return vdisk_id
+
+
+
+
+def vd_extents_validate(new_extents, new_writeable, safety=VBD_SAFETY_RR):
+ """Validate the extents against the existing extents.
+ Complains if the list supplied clashes against the extents that
+ are already in use in the system.
+ new_extents [list of dicts]: list of new extents, as dicts
+ new_writeable [int]: 1 if they are to be writeable, 0 otherwise
+ returns [int]: either the expertise level of the mapping if it doesn't
+ exceed VBD_EXPERT_MODE or -1 if it does (error)
+ """
+
+ import Xc # this is only needed in this function
+
+ xc = Xc.new()
+
+ ##### Probe for explicitly created virtual disks and build a list
+ ##### of extents for comparison with the ones that are being added
+
+ probe = xc.vbd_probe()
+
+ old_extents = [] # this will hold a list of all existing extents and
+ # their writeable status, as a list of (device,
+ # start, size, writeable?) tuples
+
+ for vbd in probe:
+ this_vbd_extents = xc.vbd_getextents(vbd['dom'],vbd['vbd'])
+ for vbd_ext in this_vbd_extents:
+ vbd_ext['writeable'] = vbd['writeable']
+ old_extents.append(vbd_ext)
+
+ ##### Now scan /proc/mounts for compile a list of extents corresponding to
+ ##### any devices mounted in DOM0. This list is added on to old_extents
+
+ regexp = re.compile("/dev/(\S*) \S* \S* (..).*")
+ fd = open('/proc/mounts', "r")
+
+ while True:
+ line = readline(fd)
+ if not line: # if we've run out of lines then stop reading
+ break
+
+ m = regexp.match(line)
+
+ # if the regexp didn't match then it's probably a line we don't
+ # care about - skip to next line
+ if not m:
+ continue
+
+ # lookup the device
+ ext_list = lookup_raw_partn(m.group(1))
+
+ # if lookup failed, skip to next mounted device
+ if not ext_list:
+ continue
+
+ # set a writeable flag as appropriate
+ for ext in ext_list:
+ ext['writeable'] = m.group(2) == 'rw'
+
+ # now we've got here, the contents of ext_list are in a
+ # suitable format to be added onto the old_extents list, ready
+ # for checking against the new extents
+
+ old_extents.extend(ext_list)
+
+ fd.close() # close /proc/mounts
+
+ ##### By this point, old_extents contains a list of extents, in
+ ##### dictionary format corresponding to every extent of physical
+ ##### disk that's either part of an explicitly created VBD, or is
+ ##### mounted under DOM0. We now check these extents against the
+ ##### proposed additions in new_extents, to see if a conflict will
+ ##### happen if they are added with write status new_writeable
+
+ level = 0 # this'll accumulate the max warning level
+
+ # Search for clashes between the new extents and the old ones
+ # Takes time O(len(new_extents) * len(old_extents))
+ for new_ext in new_extents:
+ for old_ext in old_extents:
+ if(new_ext['device'] == old_ext['device']):
+
+ new_ext_start = new_ext['start_sector']
+ new_ext_end = new_ext_start + new_ext['nr_sectors'] - 1
+
+ old_ext_start = old_ext['start_sector']
+ old_ext_end = old_ext_start + old_ext['nr_sectors'] - 1
+
+ if((old_ext_start <= new_ext_start <= old_ext_end) or
+ (old_ext_start <= new_ext_end <= old_ext_end)):
+ if (not old_ext['writeable']) and new_writeable:
+ level = max(1,level)
+ elif old_ext['writeable'] and (not new_writeable):
+ level = max(1,level)
+ elif old_ext['writeable'] and new_writeable:
+ level = max(2,level)
+
+
+ ##### level now holds the warning level incurred by the current
+ ##### VBD setup and we complain appropriately to the user
+
+
+ if level == 1:
+ print >> sys.stderr, """Warning: one or more hard disk extents
+ writeable by one domain are also readable by another."""
+ elif level == 2:
+ print >> sys.stderr, """Warning: one or more hard disk extents are
+ writeable by two or more domains simultaneously."""
+
+ if level > safety:
+ print >> sys.stderr, """ERROR: This kind of disk sharing is not allowed
+ at the current safety level (%d).""" % safety
+ level = -1
+
+ return level
+
from distutils.core import setup, Extension
import sys
-modules = [ 'xenctl.console_client', 'xenctl.utils' ]
+modules = [ 'xenctl.console_client', 'xenctl.utils', 'xenctl.ip' , 'xenctl.vdisk' ]
# We need the 'tempfile' module from Python 2.3. We install this ourselves
# if the installed Python is older than 2.3.
C2P(netif_fe_interface_status_changed_t, evtchn, Int, Long);
return dict;
case TYPE(CMSG_NETIF_FE, CMSG_NETIF_FE_DRIVER_STATUS_CHANGED):
- C2P(netif_fe_driver_status_changed_t, status, Int, Long);
+ C2P(netif_fe_driver_status_changed_t, status, Int, Long);
+ C2P(netif_fe_driver_status_changed_t, nr_interfaces, Int, Long);
return dict;
case TYPE(CMSG_NETIF_FE, CMSG_NETIF_FE_INTERFACE_CONNECT):
C2P(netif_fe_interface_connect_t, handle, Int, Long);
P2C(netif_be_disconnect_t, domid, u32);
P2C(netif_be_disconnect_t, netif_handle, u32);
break;
+ case TYPE(CMSG_NETIF_FE, CMSG_NETIF_FE_DRIVER_STATUS_CHANGED):
+ P2C(netif_fe_driver_status_changed_t, status, u32);
+ P2C(netif_fe_driver_status_changed_t, nr_interfaces, u32);
}
if ( dict_items_parsed != PyDict_Size(payload) )
--- /dev/null
+
+all:
+ python setup.py build
+
+install: all
+ if [ "$(prefix)" = "" ]; then \
+ python setup.py install; \
+ elif [ "$(dist)" = "yes" ]; then \
+ python setup.py install --home="$(prefix)"; \
+ else \
+ python setup.py install --root="$(prefix)"; \
+ fi
+ mkdir -p $(prefix)/usr/sbin
+ install -m0755 xenmgrd $(prefix)/usr/sbin
+ install -m0755 xend $(prefix)/usr/sbin
+ install -m0755 netfix $(prefix)/usr/sbin
+
+clean:
+ rm -rf build *.pyc *.pyo *.o *.a *~
--- /dev/null
+import sxp
+
+class ArgError(StandardError):
+ pass
+
+class Args:
+ """Argument encoding support for HTTP.
+ """
+
+ def __init__(self, paramspec, keyspec):
+ self.arg_ord = []
+ self.arg_dict = {}
+ self.key_ord = []
+ self.key_dict = {}
+ for (name, type) in paramspec:
+ self.arg_ord.append(name)
+ self.arg_dict[name] = type
+ for (name, type) in keyspec:
+ self.key_ord.append(name)
+ self.key_dict[name] = type
+
+ def get_args(self, d, xargs=None):
+ args = {}
+ keys = {}
+ params = []
+ if xargs:
+ self.split_args(xargs, args, keys)
+ self.split_args(d, args, keys)
+ for a in self.arg_ord:
+ if a in args:
+ params.append(args[a])
+ else:
+ raise ArgError('Missing parameter: %s' % a)
+ return (params, keys)
+
+ def split_args(self, d, args, keys):
+ for (k, v) in d.items():
+ if k in self.arg_dict:
+ type = self.arg_dict[k]
+ val = self.coerce(type, v)
+ args[k] = val
+ elif k in self.key_dict:
+ type = self.key_dict[k]
+ val = self.coerce(type, v)
+ keys[k] = val
+ else:
+ raise ArgError('Invalid parameter: %s' % k)
+
+ def get_form_args(self, f, xargs=None):
+ d = {}
+ for (k, v) in f.items():
+ n = len(v)
+ if ((k not in self.arg_dict) and
+ (k not in self.key_dict)):
+ continue
+ if n == 0:
+ continue
+ elif n == 1:
+ d[k] = v[0]
+ else:
+ raise ArgError('Too many values for %s' % k)
+ return self.get_args(d, xargs=xargs)
+
+ def coerce(self, type, v):
+ try:
+ if type == 'int':
+ return int(v)
+ if type == 'str':
+ return str(v)
+ if type == 'sxpr':
+ return self.sxpr(v)
+ except ArgError:
+ raise
+ except StandardError, ex:
+ raise ArgError(str(ex))
+
+ def sxpr(self, v):
+ if instanceof(v, types.ListType):
+ return v
+ if instanceof(v, types.File) or hasattr(v, 'readline'):
+ return sxpr_file(v)
+ if instanceof(v, types.StringType):
+ return sxpr_file(StringIO(v))
+ return str(v)
+
+ def sxpr_file(self, fin):
+ try:
+ vals = sxp.parse(fin)
+ except:
+ raise ArgError('Coercion to sxpr failed')
+ if len(vals) == 1:
+ return vals[0]
+ else:
+ raise ArgError('Too many sxprs')
+
+ def call_with_args(self, fn, args, xargs=None):
+ (params, keys) = self.get_args(args, xargs=xargs)
+ fn(*params, **keys)
+
+ def call_with_form_args(self, fn, fargs, xargs=None):
+ (params, keys) = self.get_form_args(fargs, xargs=xargs)
+ fn(*params, **keys)
+
+class ArgFn(Args):
+ """Represent a remote HTTP operation as a function.
+ Used on the client.
+ """
+
+ def __init__(self, fn, paramspec, keyspec={}):
+ Args.__init__(self, paramspec, keyspec)
+ self.fn = fn
+
+ def __call__(self, fargs, xargs=None):
+ return self.call_with_args(self.fn, fargs, xargs=xargs)
+
+class FormFn(Args):
+ """Represent an operation as a function over a form.
+ Used in the HTTP server.
+ """
+
+ def __init__(self, fn, paramspec, keyspec={}):
+ Args.__init__(self, paramspec, keyspec)
+ self.fn = fn
+
+ def __call__(self, fargs, xargs=None):
+ return self.call_with_form_args(self.fn, fargs, xargs=xargs)
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+"""Simple publish/subscribe event server.
+
+"""
+import string
+
+# subscribe a.b.c h: map a.b.c -> h
+# subscribe a.b.* h: map a.b.* -> h
+# subscribe a.b.? h: map a.b.? -> h
+#
+# for event a.b.c.d:
+#
+# lookup a.b.c.d, call handlers
+#
+# lookup a.b.c.?, call handlers
+#
+# lookup a.b.c.d.*, call handlers
+# lookup a.b.c.*, call handlers
+# lookup a.b.*, call handlers
+# lookup a.*, call handlers
+# lookup *, call handlers
+
+# a.b.c.d = (a b c d)
+# a.b.c.? = (a b c _)
+# a.b.c.* = (a b c . _)
+
+class EventServer:
+
+ DOT = '.'
+ QUERY = '?'
+ DOT_QUERY = DOT + QUERY
+ STAR = '*'
+ DOT_STAR = DOT + STAR
+
+ def __init__(self, run=0):
+ self.handlers = {}
+ self.run = run
+ self.queue = []
+
+ def start(self):
+ """Enable event handling. Sends any queued events.
+ """
+ self.run = 1
+ for (e,v) in self.queue:
+ self.inject(e, v)
+ self.queue = []
+
+ def stop(self):
+ """Suspend event handling. Events injected while suspended
+ are queued until we are started again.
+ """
+ self.run = 0
+
+ def subscribe(self, event, handler):
+ """Subscribe to an event. For example 'a.b.c.d'.
+ A subcription like 'a.b.c.?' ending in '?' matches any value
+ for the '?'. A subscription like 'a.b.c.*' ending in '*' matches
+ any event type with the same prefix, 'a.b.c' in this case.
+
+ event event name
+ handler event handler fn(event, val)
+ """
+ hl = self.handlers.get(event)
+ if hl is None:
+ self.handlers[event] = [handler]
+ else:
+ hl.append(handler)
+
+ def unsubscribe_all(self, event=None):
+ """Unsubscribe all handlers for a given event, or all handlers.
+
+ event event (optional)
+ """
+ if event == None:
+ self.handlers.clear()
+ else:
+ del self.handlers[event]
+
+ def unsubscribe(self, event, handler):
+ """Unsubscribe a given event and handler.
+
+ event event
+ handler handler
+ """
+ hl = self.handlers.get(event)
+ if hl is None:
+ return
+ hl.remove(handler)
+
+ def inject(self, event, val):
+ """Inject an event. Handlers for it are called if runing, otherwise
+ it is queued.
+
+ event event type
+ val event value
+ """
+ if self.run:
+ #print ">event", event, val
+ self.call_event_handlers(event, event, val)
+ self.call_query_handlers(event, val)
+ self.call_star_handlers(event, val)
+ else:
+ self.queue.append( (event, val) )
+
+ def call_event_handlers(self, key, event, val):
+ """Call the handlers for an event.
+ It is safe for handlers to subscribe or unsubscribe.
+
+ key key for handler list
+ event event type
+ val event value
+ """
+ hl = self.handlers.get(key)
+ if hl is None:
+ return
+ # Copy the handler list so that handlers can call
+ # subscribe/unsubscribe safely - python list iteration
+ # is not safe against list modification.
+ for h in hl[:]:
+ try:
+ h(event, val)
+ except:
+ pass
+
+ def call_query_handlers(self, event, val):
+ """Call regex handlers for events matching 'event' that end in '?'.
+
+ event event type
+ val event value
+ """
+ dot_idx = event.rfind(self.DOT)
+ if dot_idx == -1:
+ self.call_event_handlers(self.QUERY, event, val)
+ else:
+ event_query = event[0:dot_idx] + self.DOT_QUERY
+ self.call_event_handlers(event_query, event, val)
+
+ def call_star_handlers(self, event, val):
+ """Call regex handlers for events matching 'event' that end in '*'.
+
+ event event type
+ val event value
+ """
+ etype = string.split(event, self.DOT)
+ for i in range(len(etype), 0, -1):
+ event_star = self.DOT.join(etype[0:i]) + self.DOT_STAR
+ self.call_event_handlers(event_star, event, val)
+ self.call_event_handlers(self.STAR, event, val)
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = EventServer()
+ inst.start()
+ return inst
+
+def main():
+ def sys_star(event, val):
+ print 'sys_star', event, val
+
+ def sys_foo(event, val):
+ print 'sys_foo', event, val
+ s.unsubscribe('sys.foo', sys_foo)
+
+ def sys_foo2(event, val):
+ print 'sys_foo2', event, val
+
+ def sys_bar(event, val):
+ print 'sys_bar', event, val
+
+ def sys_foo_bar(event, val):
+ print 'sys_foo_bar', event, val
+
+ def foo_bar(event, val):
+ print 'foo_bar', event, val
+
+ s = EventServer()
+ s.start()
+ s.subscribe('sys.*', sys_star)
+ s.subscribe('sys.foo', sys_foo)
+ s.subscribe('sys.foo', sys_foo2)
+ s.subscribe('sys.bar', sys_bar)
+ s.subscribe('sys.foo.bar', sys_foo_bar)
+ s.subscribe('foo.bar', foo_bar)
+ s.inject('sys.foo', 'hello')
+ print
+ s.inject('sys.bar', 'hello again')
+ print
+ s.inject('sys.foo.bar', 'hello again')
+ print
+ s.inject('foo.bar', 'hello again')
+ print
+ s.inject('foo', 'hello again')
+ print
+ s.start()
+ s.unsubscribe('sys.*', sys_star)
+ s.unsubscribe_all('sys.*')
+ s.inject('sys.foo', 'hello')
+
+if __name__ == "__main__":
+ main()
+
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+## XEND_DOMAIN_CREATE = "xend.domain.create": dom
+## create:
+## xend.domain.destroy: dom, reason:died/crashed
+## xend.domain.up ?
+
+## xend.domain.start: dom
+## xend.domain.stop: dom
+## xend.domain.shutdown: dom
+## xend.domain.halt: dom
+
+## xend.domain.migrate.begin: dom, to
+## Begin tells: src host, src domain uri, dst host. Dst id known?
+## err: src host, src domain uri, dst host, dst id if known, status (of domain: ok, dead,...), reason
+## end: src host, src domain uri, dst host, dst uri
+
+## Events for both ends of migrate: for exporter and importer?
+## Include migrate id so can tie together.
+## Have uri /xend/migrate/<id> for migrate info (migrations in progress).
+
+## (xend.domain.migrate.begin (src <host>) (src.domain <id>)
+## (dst <host>) (id <migrate id>))
+
+## xend.domain.migrate.end:
+## (xend.domain.migrate.end (domain <id>) (to <host>)
+
+## xend.node.up: xend uri
+## xend.node.down: xend uri
+
+## xend.error ?
+
+## format:
+
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""General pretty-printer, including support for SXP.
+
+"""
+import sys
+import types
+import StringIO
+import sxp
+
+class PrettyItem:
+
+ def __init__(self, width):
+ self.width = width
+
+ def insert(self, block):
+ block.addtoline(self)
+
+ def get_width(self):
+ return self.width
+
+ def output(self, out):
+ print '***PrettyItem>output>', self
+ pass
+
+ def prettyprint(self, out, width):
+ print '***PrettyItem>prettyprint>', self
+ return width
+
+class PrettyString(PrettyItem):
+
+ def __init__(self, x):
+ PrettyItem.__init__(self, len(x))
+ self.value = x
+
+ def output(self, out):
+ out.write(self.value)
+
+ def prettyprint(self, line):
+ line.output(self)
+
+ def show(self, out):
+ print >> out, ("(string (width %d) '%s')" % (self.width, self.value))
+
+class PrettySpace(PrettyItem):
+
+ def output(self, out):
+ out.write(' ' * self.width)
+
+ def prettyprint(self, line):
+ line.output(self)
+
+ def show(self, out):
+ print >> out, ("(space (width %d))" % self.width)
+
+class PrettyBreak(PrettyItem):
+
+ def __init__(self, width, indent):
+ PrettyItem.__init__(self, width)
+ self.indent = indent
+ self.space = 0
+ self.active = 0
+
+ def output(self, out):
+ out.write(' ' * self.width)
+
+ def prettyprint(self, line):
+ if line.breaks(self.space):
+ self.active = 1
+ line.newline(self.indent)
+ else:
+ line.output(self)
+
+ def show(self, out):
+ print >> out, ("(break (width %d) (indent %d) (space %d) (active %d))"
+ % (self.width, self.indent, self.space, self.lspace, self.active))
+
+class PrettyNewline(PrettySpace):
+
+ def __init__(self, indent):
+ PrettySpace.__init__(self, indent)
+
+ def insert(self, block):
+ block.newline()
+ block.addtoline(self)
+
+ def output(self, out):
+ out.write(' ' * self.width)
+
+ def prettyprint(self, line):
+ line.newline(0)
+ line.output(self)
+
+ def show(self, out):
+ print >> out, ("(nl (indent %d))" % self.indent)
+
+class PrettyLine(PrettyItem):
+ def __init__(self):
+ PrettyItem.__init__(self, 0)
+ self.content = []
+
+ def write(self, x):
+ self.content.append(x)
+
+ def end(self):
+ width = 0
+ lastwidth = 0
+ lastbreak = None
+ for x in self.content:
+ if isinstance(x, PrettyBreak):
+ if lastbreak:
+ lastbreak.space = (width - lastwidth)
+ lastbreak = x
+ lastwidth = width
+ width += x.get_width()
+ if lastbreak:
+ lastbreak.space = (width - lastwidth)
+ self.width = width
+
+ def prettyprint(self, line):
+ for x in self.content:
+ x.prettyprint(line)
+
+ def show(self, out):
+ print >> out, '(LINE (width %d)' % self.width
+ for x in self.content:
+ x.show(out)
+ print >> out, ')'
+
+class PrettyBlock(PrettyItem):
+
+ def __init__(self, all=0, parent=None):
+ self.width = 0
+ self.lines = []
+ self.parent = parent
+ self.indent = 0
+ self.all = all
+ self.broken = 0
+ self.newline()
+
+ def add(self, item):
+ item.insert(self)
+
+ def end(self):
+ self.width = 0
+ for l in self.lines:
+ l.end()
+ if self.width < l.width:
+ self.width = l.width
+
+ def breaks(self, n):
+ return self.all and self.broken
+
+ def newline(self):
+ self.lines.append(PrettyLine())
+
+ def addtoline(self, x):
+ self.lines[-1].write(x)
+
+ def prettyprint(self, line):
+ self.indent = line.used
+ line.block = self
+ if not line.fits(self.width):
+ self.broken = 1
+ for l in self.lines:
+ l.prettyprint(line)
+ line.block = self.parent
+
+ def show(self, out):
+ print >> out, ('(BLOCK (width %d) (indent %d) (all %d) (broken %d)' %
+ (self.width, self.indent, self.all, self.broken))
+ for l in self.lines:
+ l.show(out)
+ print >> out, ')'
+
+class Line:
+
+ def __init__(self, out, width):
+ self.out = out
+ self.width = width
+ self.used = 0
+ self.space = self.width
+
+ def newline(self, indent):
+ indent += self.block.indent
+ self.out.write('\n')
+ self.out.write(' ' * indent)
+ self.used = indent
+ self.space = self.width - self.used
+
+ def fits(self, n):
+ return self.space - n >= 0
+
+ def breaks(self, n):
+ return self.block.breaks(n) or not self.fits(n)
+
+ def output(self, x):
+ n = x.get_width()
+ self.space -= n
+ self.used += n
+ if self.space < 0:
+ self.space = 0
+ x.output(self.out)
+
+class PrettyPrinter:
+ """A prettyprinter based on what I remember of Derek Oppen's
+ prettyprint algorithm from TOPLAS way back.
+ """
+
+ def __init__(self, width=40):
+ self.width = width
+ self.block = None
+ self.top = None
+
+ def write(self, x):
+ self.block.add(PrettyString(x))
+
+ def add(self, item):
+ self.block.add(item)
+
+ def addbreak(self, width=1, indent=4):
+ self.add(PrettyBreak(width, indent))
+
+ def addspace(self, width=1):
+ self.add(PrettySpace(width))
+
+ def addnl(self, indent=0):
+ self.add(PrettyNewline(indent))
+
+ def begin(self, all=0):
+ block = PrettyBlock(all=all, parent=self.block)
+ self.block = block
+
+ def end(self):
+ self.block.end()
+ if self.block.parent:
+ self.block.parent.add(self.block)
+ else:
+ self.top = self.block
+ self.block = self.block.parent
+
+ def prettyprint(self, out=sys.stdout):
+ line = Line(out, self.width)
+ self.top.prettyprint(line)
+
+class SXPPrettyPrinter(PrettyPrinter):
+ """An SXP prettyprinter.
+ """
+
+ def pstring(self, x):
+ io = StringIO.StringIO()
+ sxp.show(x, out=io)
+ io.seek(0)
+ val = io.getvalue()
+ io.close()
+ return val
+
+ def pprint(self, l):
+ if isinstance(l, types.ListType):
+ self.begin(all=1)
+ self.write('(')
+ i = 0
+ for x in l:
+ if(i): self.addbreak()
+ self.pprint(x)
+ i += 1
+ self.addbreak(width=0, indent=0)
+ self.write(')')
+ self.end()
+ else:
+ self.write(self.pstring(l))
+
+def prettyprint(sxpr, out=sys.stdout, width=80):
+ """Prettyprint an SXP form.
+
+ sxpr s-expression
+ out destination
+ width maximum output width
+ """
+ if isinstance(sxpr, types.ListType):
+ pp = SXPPrettyPrinter(width=width)
+ pp.pprint(sxpr)
+ pp.prettyprint(out=out)
+ else:
+ sxp.show(sxpr, out=out)
+ print >> out
+
+def main():
+ pin = sxp.Parser()
+ while 1:
+ buf = sys.stdin.read(100)
+ pin.input(buf)
+ if buf == '': break
+ l = pin.get_val()
+ prettyprint(l, width=80)
+
+if __name__ == "__main__":
+ main()
+
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+"""Client API for the HTTP interface on xend.
+Callable as a script - see main().
+"""
+import sys
+import httplib
+import types
+from StringIO import StringIO
+import urlparse
+
+from encode import *
+import sxp
+import PrettyPrint
+
+DEBUG = 1
+
+class Foo(httplib.HTTPResponse):
+
+ def begin(self):
+ fin = self.fp
+ while(1):
+ buf = fin.readline()
+ print "***", buf
+ if buf == '':
+ print
+ sys.exit()
+
+
+def sxprio(sxpr):
+ io = StringIO()
+ sxp.show(sxpr, out=io)
+ print >> io
+ io.seek(0)
+ return io
+
+def fileof(val):
+ """Converter for passing configs.
+ Handles lists, files directly.
+ Assumes a string is a file name and passes its contents.
+ """
+ if isinstance(val, types.ListType):
+ return sxprio(val)
+ if isinstance(val, types.StringType):
+ return file(val)
+ if hasattr(val, 'readlines'):
+ return val
+
+# todo: need to sort of what urls/paths are using for objects.
+# e.g. for domains at the moment return '0'.
+# should probably return abs path w.r.t. server, e.g. /xend/domain/0.
+# As an arg, assume abs path is obj uri, otherwise just id.
+
+# Function to convert to full url: Xend.uri(path), e.g.
+# maps /xend/domain/0 to http://wray-m-3.hpl.hp.com:8000/xend/domain/0
+# And should accept urls for ids?
+
+def urljoin(location, root, prefix='', rest=''):
+ base = 'http://' + location + root + prefix
+ url = urlparse.urljoin(base, rest)
+ return url
+
+def nodeurl(location, root, id=''):
+ return urljoin(location, root, 'node/', id)
+
+def domainurl(location, root, id=''):
+ return urljoin(location, root, 'domain/', id)
+
+def consoleurl(location, root, id=''):
+ return urljoin(location, root, 'console/', id)
+
+def vbdurl(location, root, id=''):
+ return urljoin(location, root, 'vbd/', id)
+
+def deviceurl(location, root, id=''):
+ return urljoin(location, root, 'device/', id)
+
+def vneturl(location, root, id=''):
+ return urljoin(location, root, 'vnet/', id)
+
+def eventurl(location, root, id=''):
+ return urljoin(location, root, 'event/', id)
+
+def xend_request(url, method, data=None):
+ urlinfo = urlparse.urlparse(url)
+ (uproto, ulocation, upath, uparam, uquery, ufrag) = urlinfo
+ if DEBUG: print url, urlinfo
+ if uproto != 'http':
+ raise StandardError('Invalid protocol: ' + uproto)
+ if DEBUG: print '>xend_request', ulocation, upath, method, data
+ (hdr, args) = encode_data(data)
+ if data and method == 'GET':
+ upath += '?' + args
+ args = None
+ if method == "POST" and upath.endswith('/'):
+ upath = upath[:-1]
+ if DEBUG: print "ulocation=", ulocation, "upath=", upath, "args=", args
+ #hdr['User-Agent'] = 'Mozilla'
+ #hdr['Accept'] = 'text/html,text/plain'
+ conn = httplib.HTTPConnection(ulocation)
+ #conn.response_class = Foo
+ conn.set_debuglevel(1)
+ conn.request(method, upath, args, hdr)
+ resp = conn.getresponse()
+ if DEBUG: print resp.status, resp.reason
+ if DEBUG: print resp.msg.headers
+ if resp.status in [204, 404]:
+ return None
+ if resp.status not in [200, 201, 202, 203]:
+ raise RuntimeError(resp.reason)
+ pin = sxp.Parser()
+ data = resp.read()
+ if DEBUG: print "***data" , data
+ if DEBUG: print "***"
+ pin.input(data);
+ pin.input_eof()
+ conn.close()
+ val = pin.get_val()
+ #if isinstance(val, types.ListType) and sxp.name(val) == 'val':
+ # val = val[1]
+ if isinstance(val, types.ListType) and sxp.name(val) == 'err':
+ raise RuntimeError(val[1])
+ if DEBUG: print '**val='
+ #sxp.show(val); print
+ PrettyPrint.prettyprint(val)
+ if DEBUG: print '**'
+ return val
+
+def xend_get(url, args=None):
+ return xend_request(url, "GET", args)
+
+def xend_call(url, data):
+ return xend_request(url, "POST", data)
+
+class Xend:
+
+ SRV_DEFAULT = "localhost:8000"
+ ROOT_DEFAULT = "/xend/"
+
+ def __init__(self, srv=None, root=None):
+ self.bind(srv, root)
+
+ def bind(self, srv=None, root=None):
+ if srv is None: srv = self.SRV_DEFAULT
+ if root is None: root = self.ROOT_DEFAULT
+ if not root.endswith('/'): root += '/'
+ self.location = srv
+ self.root = root
+
+ def nodeurl(self, id=''):
+ return nodeurl(self.location, self.root, id)
+
+ def domainurl(self, id=''):
+ return domainurl(self.location, self.root, id)
+
+ def consoleurl(self, id=''):
+ return consoleurl(self.location, self.root, id)
+
+ def vbdurl(self, id=''):
+ return vbdurl(self.location, self.root, id)
+
+ def deviceurl(self, id=''):
+ return deviceurl(self.location, self.root, id)
+
+ def vneturl(self, id=''):
+ return vneturl(self.location, self.root, id)
+
+ def eventurl(self, id=''):
+ return eventurl(self.location, self.root, id)
+
+ def xend(self):
+ return xend_get(urljoin(self.location, self.root))
+
+ def xend_node(self):
+ return xend_get(self.nodeurl())
+
+ def xend_node_cpu_rrobin_slice_set(self, slice):
+ return xend_call(self.nodeurl(),
+ {'op' : 'cpu_rrobin_slice_set',
+ 'slice' : slice })
+
+ def xend_node_cpu_bvt_slice_set(self, slice):
+ return xend_call(self.nodeurl(),
+ {'op' : 'cpu_bvt_slice_set',
+ 'slice' : slice })
+
+ def xend_domains(self):
+ return xend_get(self.domainurl())
+
+ def xend_domain_create(self, conf):
+ return xend_call(self.domainurl(),
+ {'op' : 'create',
+ 'config' : fileof(conf) })
+
+ def xend_domain(self, id):
+ return xend_get(self.domainurl(id))
+
+ def xend_domain_start(self, id):
+ return xend_call(self.domainurl(id),
+ {'op' : 'start'})
+
+ def xend_domain_stop(self, id):
+ return xend_call(self.domainurl(id),
+ {'op' : 'stop'})
+
+ def xend_domain_shutdown(self, id):
+ return xend_call(self.domainurl(id),
+ {'op' : 'shutdown'})
+
+ def xend_domain_halt(self, id):
+ return xend_call(self.domainurl(id),
+ {'op' : 'halt'})
+
+ def xend_domain_save(self, id, filename):
+ return xend_call(self.domainurl(id),
+ {'op' : 'save',
+ 'file' : filename})
+
+ def xend_domain_restore(self, id, filename, conf):
+ return xend_call(self.domainurl(id),
+ {'op' : 'restore',
+ 'file' : filename,
+ 'config' : fileof(conf) })
+
+ def xend_domain_migrate(self, id, dst):
+ return xend_call(self.domainurl(id),
+ {'op' : 'migrate',
+ 'dst' : dst})
+
+ def xend_domain_pincpu(self, id, cpu):
+ return xend_call(self.domainurl(id),
+ {'op' : 'pincpu',
+ 'cpu' : cpu})
+
+ def xend_domain_cpu_bvt_set(self, id, mcuadv, warp, warpl, warpu):
+ return xend_call(self.domainurl(id),
+ {'op' : 'cpu_bvt_set',
+ 'mcuadv' : mvuadv,
+ 'warp' : warp,
+ 'warpl' : warpl,
+ 'warpu' : warpu })
+
+ def xend_domain_cpu_atropos_set(self, id, period, slice, latency, xtratime):
+ return xend_call(self.domainurl(id),
+ {'op' : 'cpu_atropos_set',
+ 'period' : period,
+ 'slice' : slice,
+ 'latency' : latency,
+ 'xtratime': xtratime })
+
+ def xend_domain_vifs(self, id):
+ return xend_get(self.domainurl(id),
+ { 'op' : 'vifs' })
+
+ def xend_domain_vif_stats(self, id, vif):
+ return xend_get(self.domainurl(id),
+ { 'op' : 'vif_stats',
+ 'vif' : vif})
+
+ def xend_domain_vif_ip_add(self, id, vif, ipaddr):
+ return xend_call(self.domainurl(id),
+ {'op' : 'vif_ip_add',
+ 'vif' : vif,
+ 'ip' : ipaddr })
+
+ def xend_domain_vif_scheduler_set(id, vif, bytes, usecs):
+ return xend_call(self.domainurl(id),
+ {'op' : 'vif_scheduler_set',
+ 'vif' : vif,
+ 'bytes' : bytes,
+ 'usecs' : usecs })
+
+ def xend_domain_vif_scheduler_get(id, vif):
+ return xend_get(self.domainurl(id),
+ {'op' : 'vif_scheduler_get',
+ 'vif' : vif})
+
+ def xend_domain_vbds(self, id):
+ return xend_get(self.domainurl(id),
+ {'op' : 'vbds'})
+
+ def xend_domain_vbd(self, id, vbd):
+ return xend_get(self.domainurl(id),
+ {'op' : 'vbd',
+ 'vbd' : vbd})
+
+ def xend_domain_vbd_add(self, id, uname, dev, mode):
+ return xend_call(self.domainurl(id),
+ {'op' : 'vbd_add',
+ 'uname' : uname,
+ 'dev' : dev,
+ 'mode' : mode})
+
+ def xend_domain_vbd_remove(self, id, dev):
+ return xend_call(self.domainurl(id),
+ {'op' : 'vbd_remove',
+ 'dev' : dev})
+
+ def xend_consoles(self):
+ return xend_get(self.consoleurl())
+
+ def xend_console(self, id):
+ return xend_get(self.consoleurl(id))
+
+ def xend_vbds(self):
+ return xend_get(self.vbdurl())
+
+ def xend_vbd_create(self, conf):
+ return xend_call(self.vbdurl(),
+ {'op': 'create', 'config': fileof(conf) })
+
+ def xend_vbd(self, id):
+ return xend_get(self.vbdurl(id))
+
+ def xend_vbd_delete(self, id):
+ return xend_call(self.vbdurl(id),
+ {'op': 'delete'})
+
+ def xend_vbd_refresh(self, id, expiry):
+ return xend_call(self.vbdurl(id),
+ {'op': 'refresh', 'expiry': expiry })
+
+ def xend_vbd_expand(self, id, size):
+ return xend_call(self.vbdurl(id),
+ {'op': 'expand', 'size': size})
+
+ def xend_vnets(self):
+ return xend_get(self.vneturl())
+
+ def xend_vnet_create(self, conf):
+ return xend_call(self.vneturl(),
+ {'op': 'create', 'config': fileof(conf) })
+
+ def xend_vnet(self, id):
+ return xend_get(self.vneturl(id))
+
+ def xend_vnet_delete(self, id):
+ return xend_call(self.vneturl(id),
+ {'op': 'delete'})
+
+ def xend_event_inject(self, sxpr):
+ val = xend_call(self.eventurl(),
+ {'op': 'inject', 'event': fileof(sxpr) })
+
+
+def main(argv):
+ """Call an API function:
+
+ python XendClient.py fn args...
+
+ The leading 'xend_' on the function can be omitted.
+ Example:
+
+ > python XendClient.py domains
+ (domain 0 8)
+ > python XendClient.py domain 0
+ (domain (id 0) (name Domain-0) (memory 128))
+ """
+ server = Xend()
+ fn = argv[1]
+ if not fn.startswith('xend'):
+ fn = 'xend_' + fn
+ args = argv[2:]
+ getattr(server, fn)(*args)
+
+if __name__ == "__main__":
+ main(sys.argv)
+else:
+ server = Xend()
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+import socket
+import Xc
+xc = Xc.new()
+
+import sxp
+import XendRoot
+xroot = XendRoot.instance()
+import XendDB
+
+import EventServer
+eserver = EventServer.instance()
+
+from xenmgr.server import SrvConsoleServer
+xcd = SrvConsoleServer.instance()
+
+class XendConsoleInfo:
+ """Console information record.
+ """
+
+ def __init__(self, console, dom1, port1, dom2, port2, conn=None):
+ self.console = console
+ self.dom1 = dom1
+ self.port1 = port1
+ self.dom2 = dom2
+ self.port2 = port2
+ self.conn = conn
+ #self.id = "%d.%d-%d.%d" % (self.dom1, self.port1, self.dom2, self.port2)
+ self.id = str(port1)
+
+ def __str__(self):
+ s = "console"
+ s += " id=%s" % self.id
+ s += " src=%d.%d" % (self.dom1, self.port1)
+ s += " dst=%d.%d" % (self.dom2, self.port2)
+ s += " port=%s" % self.console
+ if self.conn:
+ s += " conn=%s:%s" % (self.conn[0], self.conn[1])
+ return s
+
+ def sxpr(self):
+ sxpr = ['console',
+ ['id', self.id],
+ ['src', self.dom1, self.port1],
+ ['dst', self.dom2, self.port2],
+ ['port', self.console],
+ ]
+ if self.conn:
+ sxpr.append(['connected', self.conn[0], self.conn[1]])
+ return sxpr
+
+ def connection(self):
+ return self.conn
+
+ def update(self, consinfo):
+ conn = sxp.child(consinfo, 'connected')
+ if conn:
+ self.conn = conn[1:]
+ else:
+ self.conn = None
+
+ def uri(self):
+ """Get the uri to use to connect to the console.
+ This will be a telnet: uri.
+
+ return uri
+ """
+ host = socket.gethostname()
+ return "telnet://%s:%s" % (host, self.console)
+
+class XendConsole:
+
+ dbpath = "console"
+
+ def __init__(self):
+ self.db = XendDB.XendDB(self.dbpath)
+ self.console = {}
+ self.console_db = self.db.fetchall("")
+ if xroot.get_rebooted():
+ print 'XendConsole> rebooted: removing all console info'
+ self.rm_all()
+ eserver.subscribe('xend.domain.died', self.onDomainDied)
+
+ def rm_all(self):
+ """Remove all console info. Used after reboot.
+ """
+ for (k, v) in self.console_db.items():
+ self._delete_console(k)
+
+ def refresh(self):
+ consoles = xcd.consoles()
+ cons = {}
+ for consinfo in consoles:
+ id = str(sxp.child_value(consinfo, 'id'))
+ cons[id] = consinfo
+ if id not in self.console:
+ self._new_console(consinfo)
+ for c in self.console.values():
+ consinfo = cons.get(c.id)
+ if consinfo:
+ c.update(consinfo)
+ else:
+ self._delete_console(c.id)
+
+ def onDomainDied(self, event, val):
+ dom = int(val)
+ for c in self.consoles():
+ if (c.dom1 == dom) or (c.dom2 == dom):
+ self._delete_console(c.id)
+
+ def sync(self):
+ self.db.saveall("", self.console_db)
+
+ def sync_console(self, id):
+ self.db.save(id, self.console_db[id])
+
+ def _new_console(self, consinfo):
+ # todo: xen needs a call to get current domain id.
+ dom1 = 0
+ port1 = sxp.child_value(consinfo, 'local_port')
+ dom2 = sxp.child_value(consinfo, 'domain')
+ port2 = sxp.child_value(consinfo, 'remote_port')
+ console = sxp.child_value(consinfo, 'console_port')
+ info = XendConsoleInfo(console, dom1, int(port1), int(dom2), int(port2))
+ info.update(consinfo)
+ self._add_console(info.id, info)
+ return info
+
+ def _add_console(self, id, info):
+ self.console[id] = info
+ self.console_db[id] = info.sxpr()
+ self.sync_console(id)
+
+ def _delete_console(self, id):
+ if id in self.console:
+ del self.console[id]
+ if id in self.console_db:
+ del self.console_db[id]
+ self.db.delete(id)
+
+ def console_ls(self):
+ self.refresh()
+ return self.console.keys()
+
+ def consoles(self):
+ self.refresh()
+ return self.console.values()
+
+ def console_create(self, dom):
+ consinfo = xcd.console_create(dom)
+ info = self._new_console(consinfo)
+ return info
+
+ def console_get(self, id):
+ self.refresh()
+ return self.console.get(id)
+
+ def console_delete(self, id):
+ self._delete_console(id)
+
+ def console_disconnect(self, id):
+ id = int(id)
+ xcd.console_disconnect(id)
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendConsole()
+ return inst
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+import os
+import os.path
+import errno
+import dircache
+import time
+
+import sxp
+import XendRoot
+xroot = XendRoot.instance()
+
+class XendDB:
+ """Persistence for Xend. Stores data in files and directories.
+ """
+
+ def __init__(self, path=None):
+ self.dbpath = xroot.get_dbroot()
+ if path:
+ self.dbpath = os.path.join(self.dbpath, path)
+ pass
+
+ def filepath(self, path):
+ return os.path.join(self.dbpath, path)
+
+ def fetch(self, path):
+ fpath = self.filepath(path)
+ return self.fetchfile(fpath)
+
+ def fetchfile(self, fpath):
+ pin = sxp.Parser()
+ fin = file(fpath, "rb")
+ try:
+ while 1:
+ try:
+ buf = fin.read(1024)
+ except IOError, ex:
+ if ex.errno == errno.EINTR:
+ continue
+ else:
+ raise
+ pin.input(buf)
+ if buf == '':
+ pin.input_eof()
+ break
+ finally:
+ fin.close()
+ return pin.get_val()
+
+ def save(self, path, sxpr):
+ fpath = self.filepath(path)
+ return self.savefile(fpath, sxpr)
+
+ def savefile(self, fpath, sxpr):
+ fdir = os.path.dirname(fpath)
+ if not os.path.isdir(fdir):
+ os.makedirs(fdir)
+ fout = file(fpath, "wb+")
+ try:
+ t = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
+ fout.write("# %s %s\n" % (fpath, t))
+ sxp.show(sxpr, out=fout)
+ finally:
+ fout.close()
+
+ def fetchall(self, path):
+ dpath = self.filepath(path)
+ d = {}
+ for k in dircache.listdir(dpath):
+ try:
+ v = self.fetchfile(os.path.join(dpath, k))
+ d[k] = v
+ except:
+ pass
+ return d
+
+ def saveall(self, path, d):
+ for (k, v) in d.items():
+ self.save(os.path.join(path, k), v)
+
+ def delete(self, path):
+ dpath = self.filepath(path)
+ os.unlink(dpath)
+
+ def ls(self, path):
+ dpath = self.filepath(path)
+ return dircache.listdir(dpath)
+
+
+
+
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Handler for domain operations.
+ Nothing here is persistent (across reboots).
+ Needs to be persistent for one uptime.
+"""
+import sys
+
+import Xc; xc = Xc.new()
+import xenctl.ip
+import xenctl.vdisk
+
+import sxp
+import XendRoot
+xroot = XendRoot.instance()
+import XendDB
+import XendDomainInfo
+import XendConsole
+import EventServer
+
+eserver = EventServer.instance()
+
+__all__ = [ "XendDomain" ]
+
+class XendDomain:
+ """Index of all domains. Singleton.
+ """
+
+ dbpath = "domain"
+ domain = {}
+
+ def __init__(self):
+ self.xconsole = XendConsole.instance()
+ # Table of domain info indexed by domain id.
+ self.db = XendDB.XendDB(self.dbpath)
+ #self.domain = {}
+ self.domain_db = self.db.fetchall("")
+ if xroot.get_rebooted():
+ print 'XendDomain> rebooted: removing all domain info'
+ self.rm_all()
+ self.initial_refresh()
+
+ def rm_all(self):
+ """Remove all domain info. Used after reboot.
+ """
+ for (k, v) in self.domain_db.items():
+ self._delete_domain(k, notify=0)
+
+ def initial_refresh(self):
+ """Refresh initial domain info from domain_db.
+ """
+ domlist = xc.domain_getinfo()
+ doms = {}
+ for d in domlist:
+ domid = str(d['dom'])
+ doms[domid] = d
+ for config in self.domain_db.values():
+ domid = int(sxp.child_value(config, 'id'))
+ if domid in doms:
+ self._new_domain(config)
+ else:
+ self._delete_domain(domid)
+ self.refresh()
+
+ def sync(self):
+ """Sync domain db to disk.
+ """
+ self.db.saveall("", self.domain_db)
+
+ def sync_domain(self, dom):
+ """Sync info for a domain to disk.
+
+ dom domain id (string)
+ """
+ self.db.save(dom, self.domain_db[dom])
+
+ def close(self):
+ pass
+
+ def _new_domain(self, info):
+ """Create a domain entry from saved info.
+ """
+ console = None
+ kernel = None
+ id = sxp.child_value(info, 'id')
+ dom = int(id)
+ name = sxp.child_value(info, 'name')
+ memory = int(sxp.child_value(info, 'memory'))
+ consoleinfo = sxp.child(info, 'console')
+ if consoleinfo:
+ consoleid = sxp.child_value(consoleinfo, 'id')
+ console = self.xconsole.console_get(consoleid)
+ if dom and console is None:
+ # Try to connect a console.
+ console = self.xconsole.console_create(dom)
+ config = sxp.child(info, 'config')
+ if config:
+ image = sxp.child(info, 'image')
+ if image:
+ image = sxp.child0(image)
+ kernel = sxp.child_value(image, 'kernel')
+ dominfo = XendDomainInfo.XendDomainInfo(
+ config, dom, name, memory, kernel, console)
+ self.domain[id] = dominfo
+
+ def _add_domain(self, id, info, notify=1):
+ self.domain[id] = info
+ self.domain_db[id] = info.sxpr()
+ self.sync_domain(id)
+ if notify: eserver.inject('xend.domain.created', id)
+
+ def _delete_domain(self, id, notify=1):
+ if id in self.domain:
+ if notify: eserver.inject('xend.domain.died', id)
+ del self.domain[id]
+ if id in self.domain_db:
+ del self.domain_db[id]
+ self.db.delete(id)
+
+ def refresh(self):
+ """Refresh domain list from Xen.
+ """
+ domlist = xc.domain_getinfo()
+ # Index the domlist by id.
+ # Add entries for any domains we don't know about.
+ doms = {}
+ for d in domlist:
+ id = str(d['dom'])
+ doms[id] = d
+ if id not in self.domain:
+ config = None
+ image = None
+ newinfo = XendDomainInfo.XendDomainInfo(
+ config, d['dom'], d['name'], d['mem_kb']/1024, image)
+ self._add_domain(id, newinfo)
+ # Remove entries for domains that no longer exist.
+ for d in self.domain.values():
+ dominfo = doms.get(d.id)
+ if dominfo:
+ d.update(dominfo)
+ else:
+ self._delete_domain(d.id)
+
+ def refresh_domain(self, id):
+ dom = int(id)
+ dominfo = xc.domain_getinfo(dom, 1)
+ if dominfo == [] or dominfo[0]['dom'] != dom:
+ try:
+ self._delete_domain(id)
+ except:
+ pass
+ else:
+ d = self.domain.get(id)
+ if d:
+ d.update(dominfo)
+
+ def domain_ls(self):
+ # List domains.
+ # Update info from kernel first.
+ self.refresh()
+ return self.domain.keys()
+
+ def domains(self):
+ self.refresh()
+ return self.domain.values()
+
+ def domain_create(self, config):
+ # Create domain, log it.
+ deferred = XendDomainInfo.vm_create(config)
+ def fn(dominfo):
+ self._add_domain(dominfo.id, dominfo)
+ return dominfo
+ deferred.addCallback(fn)
+ return deferred
+
+ def domain_get(self, id):
+ id = str(id)
+ self.refresh_domain(id)
+ return self.domain[id]
+
+ def domain_start(self, id):
+ """Start domain running.
+ """
+ dom = int(id)
+ eserver.inject('xend.domain.start', id)
+ return xc.domain_start(dom=dom)
+
+ def domain_stop(self, id):
+ """Stop domain running.
+ """
+ dom = int(id)
+ return xc.domain_stop(dom=dom)
+
+ def domain_shutdown(self, id):
+ """Shutdown domain (nicely).
+ """
+ dom = int(id)
+ if dom <= 0:
+ return 0
+ eserver.inject('xend.domain.shutdown', id)
+ val = xc.domain_destroy(dom=dom, force=0)
+ self.refresh()
+ return val
+
+ def domain_halt(self, id):
+ """Shutdown domain immediately.
+ """
+ dom = int(id)
+ if dom <= 0:
+ return 0
+ eserver.inject('xend.domain.halt', id)
+ val = xc.domain_destroy(dom=dom, force=1)
+ self.refresh()
+ return val
+
+ def domain_migrate(self, id, dst):
+ """Start domain migration.
+ """
+ # Need a cancel too?
+ pass
+
+ def domain_save(self, id, dst, progress=0):
+ """Save domain state to file, halt domain.
+ """
+ dom = int(id)
+ self.domain_stop(id)
+ eserver.inject('xend.domain.save', id)
+ rc = xc.linux_save(dom=dom, state_file=dst, progress=progress)
+ if rc == 0:
+ self.domain_halt(id)
+ return rc
+
+ def domain_restore(self, src, config, progress=0):
+ """Restore domain from file.
+ """
+ dominfo = XendDomainInfo.dom_restore(dom, config)
+ self._add_domain(dominfo.id, dominfo)
+ return dominfo
+
+ def domain_device_add(self, id, info):
+ """Add a device to a domain.
+ """
+ pass
+
+ def domain_device_remove(self, id, dev):
+ """Delete a device from a domain.
+ """
+ pass
+
+ def domain_device_configure(self, id, dev, info):
+ """Configure a domain device.
+ """
+ pass
+
+ #============================================================================
+ # Backward compatibility stuff from here on.
+
+ def domain_pincpu(self, dom, cpu):
+ dom = int(dom)
+ return xc.domain_pincpu(dom, cpu)
+
+ def domain_cpu_bvt_set(self, dom, mcuadv, warp, warpl, warpu):
+ dom = int(dom)
+ return xc.bvtsched_domain_set(dom=dom, mcuadv=mcuadv,
+ warp=warp, warpl=warpl, warpu=warpu)
+
+ def domain_cpu_bvt_get(self, dom):
+ dom = int(dom)
+ return xc.bvtsched_domain_get(dom)
+
+ def domain_cpu_atropos_set(self, dom, period, slice, latency, xtratime):
+ dom = int(dom)
+ return xc.atropos_domain_set(dom, period, slice, latency, xtratime)
+
+ def domain_cpu_atropos_get(self, dom):
+ dom = int(dom)
+ return xc.atropos_domain_get(dom)
+
+ def domain_vif_ls(self, dom):
+ dominfo = self.domain_get(dom)
+ if not dominfo: return None
+ devs = dominfo.get_devices('vif')
+ return range(0, len(devs))
+
+ def domain_vif_get(self, dom, vif):
+ dominfo = self.domain_get(dom)
+ if not dominfo: return None
+ return dominfo.get_device_by_index(vif)
+
+ def domain_vif_stats(self, dom, vif):
+ dom = int(dom)
+ return xc.vif_stats_get(dom=dom, vif=vif)
+
+ def domain_vif_ip_add(self, dom, vif, ip):
+ dom = int(dom)
+ return xenctl.ip.setup_vfr_rules_for_vif(dom, vif, ip)
+
+ def domain_vif_scheduler_set(self, dom, vif, bytes, usecs):
+ dom = int(dom)
+ return xc.xc_vif_scheduler_set(dom=dom, vif=vif,
+ credit_bytes=bytes, credit_usecs=usecs)
+
+ def domain_vif_scheduler_get(self, dom, vif):
+ dom = int(dom)
+ return xc.vif_scheduler_get(dom=dom, vif=vif)
+
+ def domain_vbd_ls(self, dom):
+ dominfo = self.domain_get(dom)
+ if not dominfo: return []
+ devs = dominfo.get_devices('vbd')
+ return [ sxp.child_value(v, 'dev') for v in devs ]
+
+ def domain_vbd_get(self, dom, vbd):
+ dominfo = self.domain_get(dom)
+ if not dominfo: return None
+ devs = dominfo.get_devices('vbd')
+ for v in devs:
+ if sxp.child_value(v, 'dev') == vbd:
+ return v
+ return None
+
+ def domain_vbd_add(self, dom, uname, dev, mode):
+ dom = int(dom)
+ vbd = vm.make_disk(dom, uname, dev, mode)
+ return vbd
+
+ def domain_vbd_remove(self, dom, dev):
+ dom = int(dom)
+ vbd = xenctl.vdisk.blkdev_name_to_number(dev)
+ if vbd < 0: return vbd
+ err = xc.vbd_destroy(dom, vbd)
+ if err < 0: return err
+ return vbd
+
+ def domain_shadow_control(self, dom, op):
+ dom = int(dom)
+ return xc.shadow_control(dom, op)
+
+ #============================================================================
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendDomain()
+ return inst
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Handler for persistent domain configs.
+
+"""
+
+import sxp
+import XendDB
+import XendDomain
+
+__all__ = [ "XendDomainConfig" ]
+
+class XendDomainConfig:
+
+ dbpath = 'config'
+
+ def __init__(self):
+ self.db = XendDB.XendDB(self.dbpath)
+
+ def domain_config_ls(self, path):
+ return self.db.ls(path)
+
+ def domain_config_create(self, path, sxpr):
+ self.db.save(path, sxpr)
+ pass
+
+ def domain_config_delete(self, path):
+ self.db.delete(path)
+
+ def domain_config_instance(self, path):
+ """Create a domain from a config.
+ """
+ config = self.db.fetch(path)
+ xd = XendDomain.instance()
+ newdom = xd.domain_create(config)
+ return newdom
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendDomainConfig()
+ return inst
--- /dev/null
+#!/usr/bin/python
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Representation of a single domain.
+Includes support for domain construction, using
+open-ended configurations.
+
+Author: Mike Wray <mike.wray@hpl.hp.com>
+
+"""
+
+import sys
+import os
+
+from twisted.internet import defer
+
+import Xc; xc = Xc.new()
+
+import xenctl.ip
+import xenctl.vdisk
+
+import sxp
+
+import XendConsole
+xendConsole = XendConsole.instance()
+
+import server.SrvConsoleServer
+xend = server.SrvConsoleServer.instance()
+
+class VmError(ValueError):
+ """Vm construction error."""
+
+ def __init__(self, value):
+ self.value = value
+
+ def __str__(self):
+ return self.value
+
+
+class XendDomainInfo:
+ """Virtual machine object."""
+
+ def __init__(self, config, dom, name, memory, image=None, console=None):
+ """Construct a virtual machine object.
+
+ config configuration
+ dom domain id
+ name name
+ memory memory size (in MB)
+ image image object
+ """
+ #todo: add info: runtime, state, ...
+ self.config = config
+ self.id = str(dom)
+ self.dom = dom
+ self.name = name
+ self.memory = memory
+ self.image = image
+ self.console = console
+ self.devices = {}
+ self.configs = []
+ self.info = None
+
+ #todo: state: running, suspended
+ self.state = 'running'
+ #todo: set to migrate info if migrating
+ self.migrate = None
+
+ def update(self, info):
+ """Update with info from xc.domain_getinfo().
+ """
+ self.info = info
+
+ def __str__(self):
+ s = "domain"
+ s += " id=" + self.id
+ s += " name=" + self.name
+ s += " memory=" + str(self.memory)
+ if self.console:
+ s += " console=" + self.console.id
+ if self.image:
+ s += " image=" + self.image
+ s += ""
+ return s
+
+ __repr__ = __str__
+
+ def sxpr(self):
+ sxpr = ['domain',
+ ['id', self.id],
+ ['name', self.name],
+ ['memory', self.memory] ]
+ if self.info:
+ run = (self.info['running'] and 'r') or '-'
+ stop = (self.info['stopped'] and 's') or '-'
+ state = run + state
+ sxpr.append(['cpu', self.info['cpu']])
+ sxpr.append(['state', state])
+ sxpr.append(['cpu_time', self.info['cpu_time']/1e8])
+ if self.console:
+ sxpr.append(self.console.sxpr())
+ if self.config:
+ sxpr.append(['config', self.config])
+ return sxpr
+
+ def add_device(self, type, dev):
+ """Add a device to a virtual machine.
+
+ dev device to add
+ """
+ dl = self.devices.get(type, [])
+ dl.append(dev)
+ self.devices[type] = dl
+
+ def get_devices(self, type):
+ val = self.devices.get(type, [])
+ print 'get_devices', type; sxp.show(val); print
+ return val
+
+ def get_device_by_id(self, type, id):
+ """Get the device with the given id.
+
+ id device id
+
+ returns device or None
+ """
+ return sxp.child_with_id(self.get_devices(type), id)
+
+ def get_device_by_index(self, type, idx):
+ dl = self.get_devices(type)
+ if 0 <= idx < len(dl):
+ return dl[idx]
+ else:
+ return None
+
+ def add_config(self, val):
+ """Add configuration data to a virtual machine.
+
+ val data to add
+ """
+ self.configs.append(val)
+
+ def destroy(self):
+ if self.dom <= 0:
+ return 0
+ return xc.domain_destroy(dom=self.dom, force=1)
+
+ def show(self):
+ """Print virtual machine info.
+ """
+ print "[VM dom=%d name=%s memory=%d" % (self.dom, self.name, self.memory)
+ print "image:"
+ sxp.show(self.image)
+ print
+ for dl in self.devices:
+ for dev in dl:
+ print "device:"
+ sxp.show(dev)
+ print
+ for val in self.configs:
+ print "config:"
+ sxp.show(val)
+ print
+ print "]"
+
+def safety_level(sharing):
+ if sharing == 'rw':
+ return xenctl.vdisk.VBD_SAFETY_RW
+ if sharing == 'ww':
+ return xenctl.vdisk.VBD_SAFETY_WW
+ return xenctl.vdisk.VBD_SAFETY_RR
+
+
+def make_disk_old(dom, uname, dev, mode, sharing):
+ writeable = ('w' in mode)
+ safety = safety_level(sharing)
+ vbd = xenctl.vdisk.blkdev_name_to_number(dev)
+ extents = xenctl.vdisk.lookup_disk_uname(uname)
+ if not extents:
+ raise VmError("vbd: Extents not found: uname=%s" % uname)
+
+ # check that setting up this VBD won't violate the sharing
+ # allowed by the current VBD expertise level
+ if xenctl.vdisk.vd_extents_validate(extents, writeable, safety=safety) < 0:
+ raise VmError("vbd: Extents invalid: uname=%s" % uname)
+
+ if xc.vbd_create(dom=dom, vbd=vbd, writeable=writeable):
+ raise VmError("vbd: Creating device failed: dom=%d uname=%s vbd=%d mode=%s"
+ % (dom, uname, vbdmode))
+
+ if xc.vbd_setextents(dom=dom, vbd=vbd, extents=extents):
+ raise VMError("vbd: Setting extents failed: dom=%d uname=%s vbd=%d"
+ % (dom, uname, vbd))
+ return vbd
+
+def make_disk(dom, uname, dev, mode, sharing):
+ """Create a virtual disk device for a domain.
+
+ @returns Deferred
+ """
+ segments = xenctl.vdisk.lookup_disk_uname(uname)
+ if not segments:
+ raise VmError("vbd: Segments not found: uname=%s" % uname)
+ if len(segments) > 1:
+ raise VmError("vbd: Multi-segment vdisk: uname=%s" % uname)
+ segment = segments[0]
+ vdev = xenctl.vdisk.blkdev_name_to_number(dev)
+ ctrl = xend.blkif_create(dom)
+
+ def fn(ctrl):
+ return xend.blkif_dev_create(dom, vdev, mode, segment)
+ ctrl.addCallback(fn)
+ return ctrl
+
+def make_vif_old(dom, vif, vmac, vnet):
+ return # todo: Not supported yet.
+ err = xc.vif_setinfo(dom=dom, vif=vif, vmac=vmac, vnet=vnet)
+ if err < 0:
+ raise VmError('vnet: Error %d setting vif mac dom=%d vif=%d vmac=%s vnet=%d' %
+ (err, dom, vif, vmac, vnet))
+
+def make_vif(dom, vif, vmac):
+ """Create a virtual network device for a domain.
+
+
+ @returns Deferred
+ """
+ xend.netif_create(dom)
+ d = xend.netif_dev_create(dom, vif, vmac)
+ return d
+
+def vif_up(iplist):
+ #todo: Need a better way.
+ # send an unsolicited ARP reply for all non link-local IPs
+
+ IP_NONLOCAL_BIND = '/proc/sys/net/ipv4/ip_nonlocal_bind'
+
+ def get_ip_nonlocal_bind():
+ return int(open(IP_NONLOCAL_BIND, 'r').read()[0])
+
+ def set_ip_nonlocal_bind(v):
+ print >> open(IP_NONLOCAL_BIND, 'w'), str(v)
+
+ def link_local(ip):
+ return xenctl.ip.check_subnet(ip, '169.254.0.0', '255.255.0.0')
+
+ def arping(ip, gw):
+ cmd = '/usr/sbin/arping -A -b -I eth0 -c 1 -s %s %s' % (ip, gw)
+ print cmd
+ os.system(cmd)
+
+ gateway = xenctl.ip.get_current_ipgw() or '255.255.255.255'
+ nlb = get_ip_nonlocal_bind()
+ if not nlb: set_ip_nonlocal_bind(1)
+ try:
+ for ip in iplist:
+ if not link_local(ip):
+ arping(ip, gateway)
+ finally:
+ if not nlb: set_ip_nonlocal_bind(0)
+
+def xen_domain_create(config, ostype, name, memory, kernel, ramdisk, cmdline, vifs_n):
+ if not os.path.isfile(kernel):
+ raise VmError('Kernel image does not exist: %s' % kernel)
+ if ramdisk and not os.path.isfile(ramdisk):
+ raise VMError('Kernel ramdisk does not exist: %s' % ramdisk)
+
+ cpu = int(sxp.child_value(config, 'cpu', '-1'))
+ dom = xc.domain_create(mem_kb= memory * 1024, name= name, cpu= cpu)
+ if dom <= 0:
+ raise VmError('Creating domain failed: name=%s memory=%d kernel=%s'
+ % (name, memory, kernel))
+ console = xendConsole.console_create(dom)
+ buildfn = getattr(xc, '%s_build' % ostype)
+ err = buildfn(dom = dom,
+ image = kernel,
+ control_evtchn = console.port2,
+ cmdline = cmdline,
+ ramdisk = ramdisk)
+ if err != 0:
+ raise VmError('Building domain failed: type=%s dom=%d err=%d'
+ % (ostype, dom, err))
+ vm = XendDomainInfo(config, dom, name, memory, kernel, console)
+ return vm
+
+config_handlers = {}
+
+def add_config_handler(name, h):
+ """Add a handler for a config field.
+
+ name field name
+ h handler: fn(vm, config, field, index)
+ """
+ config_handlers[name] = h
+
+def get_config_handler(name):
+ """Get a handler for a config field.
+
+ returns handler or None
+ """
+ return config_handlers.get(name)
+
+"""Table of handlers for virtual machine images.
+Indexed by image type.
+"""
+image_handlers = {}
+
+def add_image_handler(name, h):
+ """Add a handler for an image type
+ name image type
+ h handler: fn(config, name, memory, image)
+ """
+ image_handlers[name] = h
+
+def get_image_handler(name):
+ """Get the handler for an image type.
+ name image type
+
+ returns handler or None
+ """
+ return image_handlers.get(name)
+
+"""Table of handlers for devices.
+Indexed by device type.
+"""
+device_handlers = {}
+
+def add_device_handler(name, h):
+ """Add a handler for a device type.
+
+ name device type
+ h handler: fn(vm, dev)
+ """
+ device_handlers[name] = h
+
+def get_device_handler(name):
+ """Get the handler for a device type.
+
+ name device type
+
+ returns handler or None
+ """
+ return device_handlers.get(name)
+
+def vm_create(config):
+ """Create a VM from a configuration.
+ If a vm has been partially created and there is an error it
+ is destroyed.
+
+ config configuration
+
+ returns Deferred
+ raises VmError for invalid configuration
+ """
+ # todo - add support for scheduling params?
+ print 'vm_create>'
+ xenctl.vdisk.VBD_EXPERT_MODE = 0
+ vm = None
+ try:
+ name = sxp.child_value(config, 'name')
+ memory = int(sxp.child_value(config, 'memory', '128'))
+ image = sxp.child_value(config, 'image')
+
+ image_name = sxp.name(image)
+ image_handler = get_image_handler(image_name)
+ if image_handler is None:
+ raise VmError('unknown image type: ' + image_name)
+ vm = image_handler(config, name, memory, image)
+ deferred = vm_configure(vm, config)
+ except StandardError, ex:
+ # Catch errors, cleanup and re-raise.
+ if vm:
+ vm.destroy()
+ raise
+ def cbok(x):
+ print 'vm_create> cbok', x
+ return x
+ deferred.addCallback(cbok)
+ print 'vm_create<'
+ return deferred
+
+def vm_restore(src, config, progress=0):
+ ostype = "linux" #todo set from config
+ restorefn = getattr(xc, "%s_restore" % ostype)
+ dom = restorefn(state_file=src, progress=progress)
+ if dom < 0: return dom
+ deferred = dom_configure(dom, config)
+ return deferred
+
+def dom_get(dom):
+ domlist = xc.domain_getinfo(dom=dom)
+ if domlist and dom == domlist[0]['dom']:
+ return domlist[0]
+ return None
+
+def dom_configure(dom, config):
+ d = dom_get(dom)
+ if not d:
+ raise VMError("Domain not found: %d" % dom)
+ try:
+ name = d['name']
+ memory = d['memory']/1024
+ image = None
+ vm = VM(config, dom, name, memory, image)
+ deferred = vm_configure(vm, config)
+ except StandardError, ex:
+ if vm:
+ vm.destroy()
+ raise
+ return deferred
+
+def append_deferred(dlist, v):
+ if isinstance(v, defer.Deferred):
+ dlist.append(v)
+
+def vm_create_devices(vm, config):
+ """Create the devices for a vm.
+
+ vm virtual machine
+ config configuration
+
+ returns Deferred
+ raises VmError for invalid devices
+ """
+ print '>vm_create_devices'
+ dlist = []
+ devices = sxp.children(config, 'device')
+ index = {}
+ for d in devices:
+ dev = sxp.child0(d)
+ if dev is None:
+ raise VmError('invalid device')
+ dev_name = sxp.name(dev)
+ dev_index = index.get(dev_name, 0)
+ dev_handler = get_device_handler(dev_name)
+ if dev_handler is None:
+ raise VmError('unknown device type: ' + dev_name)
+ v = dev_handler(vm, dev, dev_index)
+ append_deferred(dlist, v)
+ index[dev_name] = dev_index + 1
+ deferred = defer.DeferredList(dlist, fireOnOneErrback=1)
+ print '<vm_create_devices'
+ return deferred
+
+def vm_configure(vm, config):
+ """Configure a vm.
+
+ vm virtual machine
+ config configuration
+
+ returns Deferred - calls callback with vm
+ """
+ d = xend.blkif_create(vm.dom)
+ d.addCallback(_vm_configure1, vm, config)
+ return d
+
+def _vm_configure1(val, vm, config):
+ d = vm_create_devices(vm, config)
+ print '_vm_configure1> made devices...'
+ def cbok(x):
+ print '_vm_configure1> cbok', x
+ return x
+ d.addCallback(cbok)
+ d.addCallback(_vm_configure2, vm, config)
+ print '_vm_configure1<'
+ return d
+
+def _vm_configure2(val, vm, config):
+ print '>callback _vm_configure2...'
+ dlist = []
+ index = {}
+ for field in sxp.children(config):
+ field_name = sxp.name(field)
+ field_index = index.get(field_name, 0)
+ field_handler = get_config_handler(field_name)
+ # Ignore unknown fields. Warn?
+ if field_handler:
+ v = field_handler(vm, config, field, field_index)
+ append_deferred(dlist, v)
+ index[field_name] = field_index + 1
+ d = defer.DeferredList(dlist, fireOnOneErrback=1)
+ def cbok(results):
+ print '_vm_configure2> cbok', results
+ return vm
+ def cberr(err):
+ print '_vm_configure2> cberr', err
+ vm.destroy()
+ return err
+ d.addCallback(cbok)
+ d.addErrback(cberr)
+ print '<_vm_configure2'
+ return d
+
+def config_devices(config, name):
+ """Get a list of the 'device' nodes of a given type from a config.
+
+ config configuration
+ name device type
+ return list of device configs
+ """
+ devices = []
+ for d in sxp.children(config, 'device'):
+ dev = sxp.child0(d)
+ if dev is None: continue
+ if name == sxp.name(dev):
+ devices.append(dev)
+ return devices
+
+def vm_image_linux(config, name, memory, image):
+ """Create a VM for a linux image.
+
+ name vm name
+ memory vm memory
+ image image config
+
+ returns vm
+ """
+ kernel = sxp.child_value(image, "kernel")
+ cmdline = ""
+ ip = sxp.child_value(image, "ip", "dhcp")
+ if ip:
+ cmdline += " ip=" + ip
+ root = sxp.child_value(image, "root")
+ if root:
+ cmdline += " root=" + root
+ args = sxp.child_value(image, "args")
+ if args:
+ cmdline += " " + args
+ ramdisk = sxp.child_value(image, "ramdisk", '')
+ vifs = config_devices(config, "vif")
+ vm = xen_domain_create(config, "linux", name, memory, kernel,
+ ramdisk, cmdline, len(vifs))
+ return vm
+
+def vm_image_netbsd(config, name, memory, image):
+ """Create a VM for a bsd image.
+
+ name vm name
+ memory vm memory
+ image image config
+
+ returns vm
+ """
+ #todo: Same as for linux. Is that right? If so can unify them.
+ kernel = sxp.child_value(image, "kernel")
+ cmdline = ""
+ ip = sxp.child_value(image, "ip", "dhcp")
+ if ip:
+ cmdline += "ip=" + ip
+ root = sxp.child_value(image, "root")
+ if root:
+ cmdline += "root=" + root
+ args = sxp.child_value(image, "args")
+ if args:
+ cmdline += " " + args
+ ramdisk = sxp.child_value(image, "ramdisk")
+ vifs = config_devices(config, "vif")
+ vm = xen_domain_create(config, "netbsd", name, memory, kernel,
+ ramdisk, cmdline, len(vifs))
+ return vm
+
+
+def vm_dev_vif(vm, val, index):
+ """Create a virtual network interface (vif).
+
+ vm virtual machine
+ val vif config
+ index vif index
+ """
+ vif = index #todo
+ vmac = sxp.child_value(val, "mac")
+ defer = make_vif(vm.dom, vif, vmac)
+ def fn(id):
+ dev = val + ['vif', vif]
+ vm.add_device('vif', dev)
+ print 'vm_dev_vif> created', dev
+ return id
+ defer.addCallback(fn)
+ return defer
+
+def vm_dev_vbd(vm, val, index):
+ """Create a virtual block device (vbd).
+
+ vm virtual machine
+ val vbd config
+ index vbd index
+ """
+ uname = sxp.child_value(val, 'uname')
+ if not uname:
+ raise VMError('vbd: Missing uname')
+ dev = sxp.child_value(val, 'dev')
+ if not dev:
+ raise VMError('vbd: Missing dev')
+ mode = sxp.child_value(val, 'mode', 'r')
+ sharing = sxp.child_value(val, 'sharing', 'rr')
+ defer = make_disk(vm.dom, uname, dev, mode, sharing)
+ def fn(vbd):
+ vm.add_device('vbd', val)
+ return vbd
+ defer.addCallback(fn)
+ return defer
+
+def vm_dev_pci(vm, val, index):
+ bus = sxp.child_value(val, 'bus')
+ if not bus:
+ raise VMError('pci: Missing bus')
+ dev = sxp.child_value(val, 'dev')
+ if not dev:
+ raise VMError('pci: Missing dev')
+ func = sxp.child_value(val, 'func')
+ if not func:
+ raise VMError('pci: Missing func')
+ rc = xc.physdev_pci_access_modify(dom=vm.dom, bus=bus, dev=dev, func=func, enable=1)
+ if rc < 0:
+ #todo non-fatal
+ raise VMError('pci: Failed to configure device: bus=%s dev=%s func=%s' %
+ (bus, dev, func))
+ return rc
+
+
+def vm_field_vfr(vm, config, val, index):
+ """Handle a vfr field in a config.
+
+ vm virtual machine
+ config vm config
+ val vfr field
+ """
+ # Get the rules and add them.
+ # (vfr (vif (id foo) (ip x.x.x.x)) ... )
+ list = sxp.children(val, 'vif')
+ for v in list:
+ id = sxp.child_value(v, 'id')
+ if id is None:
+ raise VmError('vfr: missing vif id')
+ id = int(id)
+ dev = vm.get_device_by_index('vif', id)
+ if not dev:
+ raise VmError('vfr: invalid vif id %d' % id)
+ vif = sxp.child_value(dev, 'vif')
+ ip = sxp.child_value(v, 'ip')
+ if not ip:
+ raise VmError('vfr: missing ip address')
+ #Don't do this in new i/o model.
+ #print 'vm_field_vfr> add rule', 'dom=', vm.dom, 'vif=', vif, 'ip=', ip
+ #xenctl.ip.setup_vfr_rules_for_vif(vm.dom, vif, ip)
+
+def vnet_bridge(vnet, vmac, dom, idx):
+ """Add the device for the vif to the bridge for its vnet.
+ """
+ vif = "vif%d.%d" % (dom, idx)
+ try:
+ cmd = "(vif.conn (vif %s) (vnet %s) (vmac %s))" % (vif, vnet, vmac)
+ print "*** vnet_bridge>", cmd
+ out = file("/proc/vnet/policy", "wb")
+ out.write(cmd)
+ err = out.close()
+ print "vnet_bridge>", "err=", err
+ except IOError, ex:
+ print "vnet_bridge>", ex
+
+def vm_field_vnet(vm, config, val, index):
+ """Handle a vnet field in a config.
+
+ vm virtual machine
+ config vm config
+ val vnet field
+ index index
+ """
+ # Get the vif children. For each vif look up the vif device
+ # with the given id and configure its vnet.
+ # (vnet (vif (id foo) (vnet 2) (mac x:x:x:x:x:x)) ... )
+ vif_vnets = sxp.children(val, 'vif')
+ for v in vif_vnets:
+ id = sxp.child_value(v, 'id')
+ if id is None:
+ raise VmError('vnet: missing vif id')
+ dev = vm.get_device_by_id('vif', id)
+ if not sxp.elementp(dev, 'vif'):
+ raise VmError('vnet: invalid vif id %s' % id)
+ vnet = sxp.child_value(v, 'vnet', 1)
+ mac = sxp.child_value(dev, 'mac')
+ vif = sxp.child_value(dev, 'vif')
+ vnet_bridge(vnet, mac, vm.dom, 0)
+ vm.add_config([ 'vif.vnet', ['id', id], ['vnet', vnet], ['mac', mac]])
+
+# Register image handlers for linux and bsd.
+add_image_handler('linux', vm_image_linux)
+add_image_handler('netbsd', vm_image_netbsd)
+
+# Register device handlers for vifs and vbds.
+add_device_handler('vif', vm_dev_vif)
+add_device_handler('vbd', vm_dev_vbd)
+add_device_handler('pci', vm_dev_pci)
+
+# Register config handlers for vfr and vnet.
+add_config_handler('vfr', vm_field_vfr)
+add_config_handler('vnet', vm_field_vnet)
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+import sys
+import socket
+
+import sxp
+import XendDB
+import EventServer; eserver = EventServer.instance()
+
+class XendMigrateInfo:
+
+ # states: begin, active, failed, succeeded?
+
+ def __init__(self, id, dom, dst):
+ self.id = id
+ self.state = 'begin'
+ self.src_host = socket.gethostname()
+ self.src_dom = dom
+ self.dst_host = dst
+ self.dst_dom = None
+
+ def set_state(self, state):
+ self.state = state
+
+ def get_state(self):
+ return self.state
+
+ def sxpr(self):
+ sxpr = ['migrate', ['id', self.id], ['state', self.state] ]
+ sxpr_src = ['src', ['host', self.src_host], ['domain', self.src_dom] ]
+ sxpr.append(sxpr_src)
+ sxpr_dst = ['dst', ['host', self.dst] ]
+ if self.dst_dom:
+ sxpr_dst.append(['domain', self.dst_dom])
+ sxpr.append(sxpr_dst)
+ return sxpr
+
+
+class XendMigrate:
+ # Represents migration in progress.
+ # Use log for indications of begin/end/errors?
+ # Need logging of: domain create/halt, migrate begin/end/fail
+ # Log via event server?
+
+ dbpath = "migrate"
+
+ def __init__(self):
+ self.db = XendDB.XendDB(self.dbpath)
+ self.migrate = {}
+ self.migrate_db = self.db.fetchall("")
+ self.id = 0
+
+ def nextid(self):
+ self.id += 1
+ return "%d" % self.id
+
+ def sync(self):
+ self.db.saveall("", self.migrate_db)
+
+ def sync_migrate(self, id):
+ self.db.save(id, self.migrate_db[id])
+
+ def close(self):
+ pass
+
+ def _add_migrate(self, id, info):
+ self.migrate[id] = info
+ self.migrate_db[id] = info.sxpr()
+ self.sync_migrate(id)
+ #eserver.inject('xend.migrate.begin', info.sxpr())
+
+ def _delete_migrate(self, id):
+ #eserver.inject('xend.migrate.end', id)
+ del self.migrate[id]
+ del self.migrate_db[id]
+ self.db.delete(id)
+
+ def migrate_ls(self):
+ return self.migrate.keys()
+
+ def migrates(self):
+ return self.migrate.values()
+
+ def migrate_get(self, id):
+ return self.migrate.get(id)
+
+ def migrate_begin(self, dom, dst):
+ # Check dom for existence, not migrating already.
+ # Create migrate info, tell xend to migrate it?
+ # - or fork migrate command ourselves?
+ # Subscribe to migrate notifications (for updating).
+ id = self.nextid()
+ info = XenMigrateInfo(id, dom, dst)
+ self._add_migrate(id, info)
+ return id
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendMigrate()
+ return inst
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Handler for node operations.
+ Has some persistent state:
+ - logs
+ - notification urls
+
+"""
+
+import Xc
+
+class XendNodeInfo:
+ """Node information record.
+ """
+
+ def __init__(self):
+ pass
+
+class XendNode:
+
+ def __init__(self):
+ self.xc = Xc.new()
+
+ def shutdown(self):
+ return 0
+
+ def reboot(self):
+ return 0
+
+ def notify(self, uri):
+ return 0
+
+ def cpu_bvt_slice_set(self, slice):
+ ret = 0
+ #ret = self.xc.bvtsched_global_set(ctx_allow=slice)
+ return ret
+
+ def cpu_bvt_slice_get(self, slice):
+ ret = 0
+ #ret = self.xc.bvtsched_global_get()
+ return ret
+
+ def cpu_rrobin_slice_set(self, slice):
+ ret = 0
+ #ret = self.xc.rrobin_global_set(slice)
+ return ret
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendNode()
+ return inst
+
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Xend root class.
+Creates the event server and handles configuration.
+"""
+
+import os
+import os.path
+import sys
+import EventServer
+
+# Initial create of the event server.
+eserver = EventServer.instance()
+
+import sxp
+
+def reboots():
+ """Get a list of system reboots from wtmp.
+ """
+ out = os.popen('/usr/bin/last reboot', 'r')
+ list = [ x.strip() for x in out if x.startswith('reboot') ]
+ return list
+
+def last_reboot():
+ """Get the last known system reboot.
+ """
+ l = reboots()
+ return (l and l[-1]) or None
+
+class XendRoot:
+ """Root of the management classes."""
+
+ lastboot_default = "/etc/xen/xend/lastboot"
+
+ """Default path to the root of the database."""
+ dbroot_default = "/etc/xen/xend/xenmgr-db"
+
+ """Default path to the config file."""
+ config_default = "/etc/xen/xenmgr-config.sxp"
+
+ """Environment variable used to override config_default."""
+ config_var = "XEND_CONFIG"
+
+ def __init__(self):
+ self.rebooted = 0
+ self.last_reboot = None
+ self.dbroot = None
+ self.config_path = None
+ self.config = None
+ self.configure()
+ self.check_lastboot()
+ eserver.subscribe('xend.*', self.event_handler)
+ #eserver.subscribe('xend.domain.created', self.event_handler)
+ #eserver.subscribe('xend.domain.died', self.event_handler)
+
+ def start(self):
+ eserver.inject('xend.start', self.rebooted)
+
+ def event_handler(self, event, val):
+ print >> sys.stderr, "EVENT>", event, val
+
+ def read_lastboot(self):
+ try:
+ val = file(self.lastboot, 'rb').readlines()[0]
+ except StandardError, ex:
+ print 'warning: Error reading', self.lastboot, ex
+ val = None
+ return val
+
+ def write_lastboot(self, val):
+ if not val: return
+ try:
+ fdir = os.path.dirname(self.lastboot)
+ if not os.path.isdir(fdir):
+ os.makedirs(fdir)
+ out = file(self.lastboot, 'wb+')
+ out.write(val)
+ out.close()
+ except IOError, ex:
+ print 'warning: Error writing', self.lastboot, ex
+ pass
+
+ def check_lastboot(self):
+ """Check if there has been a system reboot since we saved lastboot.
+ """
+ last_val = self.read_lastboot()
+ this_val = last_reboot()
+ if this_val == last_val:
+ self.rebooted = 0
+ else:
+ self.rebooted = 1
+ self.write_lastboot(this_val)
+ self.last_reboot = this_val
+
+ def get_last_reboot(self):
+ return self.last_reboot
+
+ def get_rebooted(self):
+ return self.rebooted
+
+ def configure(self):
+ self.set_config()
+ self.dbroot = self.get_config_value("dbroot", self.dbroot_default)
+ self.lastboot = self.get_config_value("lastboot", self.lastboot_default)
+
+ def get_dbroot(self):
+ """Get the path to the database root.
+ """
+ return self.dbroot
+
+ def set_config(self):
+ """If the config file exists, read it. If not, ignore it.
+
+ The config file is a sequence of sxp forms.
+ """
+ self.config_path = os.getenv(self.config_var, self.config_default)
+ if os.path.exists(self.config_path):
+ fin = file(self.config_path, 'rb')
+ try:
+ config = sxp.parse(fin)
+ config.insert(0, 'config')
+ self.config = config
+ finally:
+ fin.close()
+ else:
+ self.config = ['config']
+
+ def get_config(self, name=None):
+ """Get the configuration element with the given name, or
+ the whole configuration if no name is given.
+
+ name element name (optional)
+ returns config or none
+ """
+ if name is None:
+ val = self.config
+ else:
+ val = sxp.child(self.config, name)
+ return val
+
+ def get_config_value(self, name, val=None):
+ """Get the value of an atomic configuration element.
+
+ name element name
+ val default value (optional, defaults to None)
+ returns value
+ """
+ return sxp.child_value(self.config, name, val=val)
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendRoot()
+ return inst
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Handler for vdisk operations.
+
+"""
+
+import os
+import os.path
+
+from xenctl import vdisk
+
+import sxp
+
+class XendVdiskInfo:
+
+ def __init__(self, info):
+ self.info = info
+ self.id = info['vdisk_id']
+
+ def __str__(self):
+ return ("vdisk id=%(vdisk_id)s size=%(size)d expires=%(expires)d expiry_time=%(expiry_time)d"
+ % self.info)
+
+ def sxpr(self):
+ val = ['vdisk']
+ for (k,v) in self.info.items():
+ val.append([k, str(v)])
+ return val
+
+class XendVdisk:
+ """Index of all vdisks. Singleton.
+ """
+
+ dbpath = "vdisk"
+
+ def __init__(self):
+ # Table of vdisk info indexed by vdisk id.
+ self.vdisk = {}
+ if not os.path.isfile(vdisk.VD_DB_FILE):
+ vdisk.vd_init_db(vdisk.VD_DB_FILE)
+ self.vdisk_refresh()
+
+ def vdisk_refresh(self):
+ # vdisk = {vdisk_id, size, expires, expiry_time}
+ try:
+ vdisks = vdisk.vd_list()
+ except:
+ vdisks = []
+ for vdisk in vdisks:
+ vdiskinfo = XendVdiskInfo(vdisk)
+ self.vdisk[vdiskinfo.id] = vdiskinfo
+
+ def vdisk_ls(self):
+ """List all vdisk ids.
+ """
+ return self.vdisk.keys()
+
+ def vdisks(self):
+ return self.vdisk.values()
+
+ def vdisk_get(self, id):
+ """Get a vdisk.
+
+ id vdisk id
+ """
+ return self.vdisk.get(id)
+
+ def vdisk_create(self, info):
+ """Create a vdisk.
+
+ info config
+ """
+ # Need to configure for real.
+ # vdisk.vd_create(size, expiry)
+
+ def vdisk_configure(self, info):
+ """Configure a vdisk.
+ id vdisk id
+ info config
+ """
+ # Need to configure for real.
+ # Make bigger: vdisk.vd_enlarge(id, extra_size)
+ # Update expiry time: vdisk.vd_refresh(id, expiry)
+ # Try to recover an expired vdisk : vdisk.vd_undelete(id, expiry)
+
+
+ def vdisk_delete(self, id):
+ """Delete a vdisk.
+
+ id vdisk id
+ """
+ # Need to delete vdisk for real. What if fails?
+ del self.vdisk[id]
+ vdisk.vd_delete(id)
+
+ # def vdisk_copy: copy contents to file, vdisk still exists
+ # def vdisk_export: copy contents to file then delete the vdisk
+ # def vdisk_import: create a vdisk from a file
+ # def vdisk_space: space left for new vdisks
+
+ # def vdisk_recover: recover an expired vdisk
+
+ # def vdisk_init_partition: setup a physical partition for vdisks
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendVdisk()
+ return inst
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Handler for vnet operations.
+"""
+
+import sxp
+import XendDB
+
+class XendVnet:
+ """Index of all vnets. Singleton.
+ """
+
+ dbpath = "vnet"
+
+ def __init__(self):
+ # Table of vnet info indexed by vnet id.
+ self.vnet = {}
+ self.db = XendDB.XendDB(self.dbpath)
+ self.vnet = self.db.fetchall("")
+
+ def vnet_ls(self):
+ """List all vnets.
+ """
+ return self.vnet.keys()
+
+ def vnets(self):
+ return self.vnet.values()
+
+ def vnet_get(self, id):
+ """Get a vnet.
+
+ id vnet id
+ """
+ return self.vnet.get(id)
+
+ def vnet_create(self, info):
+ """Create a vnet.
+
+ info config
+ """
+ self.vnet_configure(info)
+
+ def vnet_configure(self, info):
+ """Configure a vnet.
+ id vnet id
+ info config
+ """
+ # Need to configure for real.
+ # Only sync if succeeded - otherwise need to back out.
+ self.vnet[info.id] = info
+ self.db.save(info.id, info)
+
+ def vnet_delete(self, id):
+ """Delete a vnet.
+
+ id vnet id
+ """
+ # Need to delete for real. What if fails?
+ if id in self.vnet:
+ del self.vnet[id]
+ self.db.delete(id)
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = XendVnet()
+ return inst
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+"""Encoding for arguments to HTTP calls.
+ Uses the url-encoding with MIME type 'application/x-www-form-urlencoded'
+ if the data does not include files. Otherwise it uses the encoding with
+ MIME type 'multipart/form-data'. See the HTML4 spec for details.
+
+ """
+import sys
+import types
+from StringIO import StringIO
+
+import urllib
+import httplib
+import random
+import md5
+
+# Extract from HTML4 spec.
+## The following example illustrates "multipart/form-data"
+## encoding. Suppose we have the following form:
+
+## <FORM action="http://server.com/cgi/handle"
+## enctype="multipart/form-data"
+## method="post">
+## <P>
+## What is your name? <INPUT type="text" name="submit-name"><BR>
+## What files are you sending? <INPUT type="file" name="files"><BR>
+## <INPUT type="submit" value="Send"> <INPUT type="reset">
+## </FORM>
+
+## If the user enters "Larry" in the text input, and selects the text
+## file "file1.txt", the user agent might send back the following data:
+
+## Content-Type: multipart/form-data; boundary=AaB03x
+
+## --AaB03x
+## Content-Disposition: form-data; name="submit-name"
+
+## Larry
+## --AaB03x
+## Content-Disposition: form-data; name="files"; filename="file1.txt"
+## Content-Type: text/plain
+
+## ... contents of file1.txt ...
+## --AaB03x--
+
+## If the user selected a second (image) file "file2.gif", the user agent
+## might construct the parts as follows:
+
+## Content-Type: multipart/form-data; boundary=AaB03x
+
+## --AaB03x
+## Content-Disposition: form-data; name="submit-name"
+
+## Larry
+## --AaB03x
+## Content-Disposition: form-data; name="files"
+## Content-Type: multipart/mixed; boundary=BbC04y
+
+## --BbC04y
+## Content-Disposition: file; filename="file1.txt"
+## Content-Type: text/plain
+
+## ... contents of file1.txt ...
+## --BbC04y
+## Content-Disposition: file; filename="file2.gif"
+## Content-Type: image/gif
+## Content-Transfer-Encoding: binary
+
+## ...contents of file2.gif...
+## --BbC04y--
+## --AaB03x--
+
+__all__ = ['encode_data', 'encode_multipart', 'encode_form', 'mime_boundary' ]
+
+def data_values(d):
+ if isinstance(d, types.DictType):
+ return d.items()
+ else:
+ return d
+
+def encode_data(d):
+ """Encode some data for HTTP transport.
+ The encoding used is stored in 'Content-Type' in the headers.
+
+ d data - sequence of tuples or dictionary
+ returns a 2-tuple of the headers and the encoded data
+ """
+ val = ({}, None)
+ if d is None: return val
+ multipart = 0
+ for (k, v) in data_values(d):
+ if encode_isfile(v):
+ multipart = 1
+ break
+ if multipart:
+ val = encode_multipart(d)
+ else:
+ val = encode_form(d)
+ return val
+
+def encode_isfile(v):
+ if isinstance(v, types.FileType):
+ return 1
+ if hasattr(v, 'readlines'):
+ return 1
+ return 0
+
+def encode_multipart(d):
+ boundary = mime_boundary()
+ hdr = { 'Content-Type': 'multipart/form-data; boundary=' + boundary }
+ out = StringIO()
+ for (k,v) in data_values(d):
+ out.write('--')
+ out.write(boundary)
+ out.write('\r\n')
+ if encode_isfile(v):
+ out.write('Content-Disposition: form-data; name="')
+ out.write(k)
+ if hasattr(v, 'name'):
+ out.write('"; filename="')
+ out.write(v.name)
+ out.write('"\r\n')
+ out.write('Content-Type: application/octet-stream\r\n')
+ out.write('\r\n')
+ for l in v.readlines():
+ out.write(l)
+ else:
+ out.write('Content-Disposition: form-data; name="')
+ out.write(k)
+ out.write('"\r\n')
+ out.write('\r\n')
+ out.write(str(v))
+ out.write('\r\n')
+ out.write('--')
+ out.write(boundary)
+ out.write('--')
+ out.write('\r\n')
+ return (hdr, out.getvalue())
+
+def mime_boundary():
+ random.seed()
+ m = md5.new()
+ for i in range(0, 10):
+ c = chr(random.randint(1, 255))
+ m.update(c)
+ b = m.hexdigest()
+ return b[0:16]
+
+def encode_form(d):
+ hdr = { 'Content-Type': 'application/x-www-form-urlencoded' }
+ val = urllib.urlencode(d)
+ return (hdr, val)
+
+def main():
+ #d = {'a': 1, 'b': 'x y', 'c': file('conf.sxp') }
+ #d = {'a': 1, 'b': 'x y' }
+ d = [ ('a', 1), ('b', 'x y'), ('c', file('conf.sxp')) ]
+ #d = [ ('a', 1), ('b', 'x y')]
+ v = encode_data(d)
+ print v[0]
+ sys.stdout.write(v[1])
+ print
+
+if __name__ == "__main__":
+ main()
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+import cgi
+
+import os
+import sys
+import types
+import StringIO
+
+from twisted.internet import defer
+from twisted.internet import reactor
+from twisted.web import error
+from twisted.web import resource
+from twisted.web import server
+
+from xenmgr import sxp
+from xenmgr import PrettyPrint
+
+def uri_pathlist(p):
+ """Split a path into a list.
+ p path
+ return list of path elements
+ """
+ l = []
+ for x in p.split('/'):
+ if x == '': continue
+ l.append(x)
+ return l
+
+class SrvBase(resource.Resource):
+ """Base class for services.
+ """
+
+ def parse_form(self, req, method):
+ """Parse the data for a request, GET using the URL, POST using encoded data.
+ Posts should use enctype='multipart/form-data' in the <form> tag,
+ rather than 'application/x-www-form-urlencoded'. Only 'multipart/form-data'
+ handles file upload.
+
+ req request
+ returns a cgi.FieldStorage instance
+ """
+ env = {}
+ env['REQUEST_METHOD'] = method
+ if self.query:
+ env['QUERY_STRING'] = self.query
+ val = cgi.FieldStorage(fp=req.rfile, headers=req.headers, environ=env)
+ return val
+
+ def use_sxp(self, req):
+ """Determine whether to send an SXP response to a request.
+ Uses SXP if there is no User-Agent, no Accept, or application/sxp is in Accept.
+
+ req request
+ returns 1 for SXP, 0 otherwise
+ """
+ ok = 0
+ user_agent = req.getHeader('User-Agent')
+ accept = req.getHeader('Accept')
+ if (not user_agent) or (not accept) or (accept.find(sxp.mime_type) >= 0):
+ ok = 1
+ return ok
+
+ def get_op_method(self, op):
+ """Get the method for an operation.
+ For operation 'foo' looks for 'op_foo'.
+
+ op operation name
+ returns method or None
+ """
+ op_method_name = 'op_' + op
+ return getattr(self, op_method_name, None)
+
+ def perform(self, req):
+ """General operation handler for posted operations.
+ For operation 'foo' looks for a method op_foo and calls
+ it with op_foo(op, req). Replies with code 500 if op_foo
+ is not found.
+
+ The method must return a list when req.use_sxp is true
+ and an HTML string otherwise (or list).
+ Methods may also return a Deferred (for incomplete processing).
+
+ req request
+ """
+ op = req.args.get('op')
+ if op is None or len(op) != 1:
+ req.setResponseCode(404, "Invalid")
+ return ''
+ op = op[0]
+ op_method = self.get_op_method(op)
+ if op_method is None:
+ req.setResponseCode(501, "Not implemented")
+ req.setHeader("Content-Type", "text/plain")
+ req.write("Not implemented: " + op)
+ return ''
+ else:
+ val = op_method(op, req)
+ if isinstance(val, defer.Deferred):
+ val.addCallback(self._cb_perform, req, 1)
+ return server.NOT_DONE_YET
+ else:
+ self._cb_perform(val, req, 0)
+ return ''
+
+ def _cb_perform(self, val, req, dfr):
+ """Callback to complete the request.
+ May be called from a Deferred.
+ """
+ if isinstance(val, error.ErrorPage):
+ req.write(val.render(req))
+ elif self.use_sxp(req):
+ req.setHeader("Content-Type", sxp.mime_type)
+ sxp.show(val, req)
+ else:
+ req.write('<html><head></head><body>')
+ self.print_path(req)
+ if isinstance(val, types.ListType):
+ req.write('<code><pre>')
+ PrettyPrint.prettyprint(val, out=req)
+ req.write('</pre></code>')
+ else:
+ req.write(str(val))
+ req.write('</body></html>')
+ if dfr:
+ req.finish()
+
+ def print_path(self, req):
+ """Print the path with hyperlinks.
+ """
+ pathlist = [x for x in req.prepath if x != '' ]
+ s = "/"
+ req.write('<h1><a href="/">/</a>')
+ for x in pathlist:
+ s += x + "/"
+ req.write(' <a href="%s">%s</a>/' % (s, x))
+ req.write("</h1>")
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from xenmgr import sxp
+from xenmgr import XendConsole
+from SrvDir import SrvDir
+
+class SrvConsole(SrvDir):
+ """An individual console.
+ """
+
+ def __init__(self, info):
+ SrvDir.__init__(self)
+ self.info = info
+ self.xc = XendConsole.instance()
+
+ def op_disconnect(self, op, req):
+ val = self.xc.console_disconnect(self.info.id)
+ return val
+
+ def render_POST(self, req):
+ return self.perform(req)
+
+ def render_GET(self, req):
+ if self.use_sxp(req):
+ req.setHeader("Content-Type", sxp.mime_type)
+ sxp.show(self.info.sxpr(), out=req)
+ else:
+ req.write('<html><head></head><body>')
+ self.print_path(req)
+ #self.ls()
+ req.write('<p>%s</p>' % self.info)
+ req.write('<p><a href="%s">Connect to domain %d</a></p>'
+ % (self.info.uri(), self.info.dom2))
+ self.form(req)
+ req.write('</body></html>')
+ return ''
+
+ def form(self, req):
+ req.write('<form method="post" action="%s">' % req.prePathURL())
+ if self.info.connection():
+ req.write('<input type="submit" name="op" value="disconnect">')
+ req.write('</form>')
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from SrvDir import SrvDir
+from SrvConsole import SrvConsole
+from xenmgr import XendConsole
+from xenmgr import sxp
+
+class SrvConsoleDir(SrvDir):
+ """Console directory.
+ """
+
+ def __init__(self):
+ SrvDir.__init__(self)
+ self.xconsole = XendConsole.instance()
+
+ def console(self, x):
+ val = None
+ try:
+ info = self.xconsole.console_get(x)
+ val = SrvConsole(info)
+ except KeyError:
+ pass
+ return val
+
+ def get(self, x):
+ v = SrvDir.get(self, x)
+ if v is not None:
+ return v
+ v = self.console(x)
+ return v
+
+ def render_GET(self, req):
+ if self.use_sxp(req):
+ req.setHeader("Content-Type", sxp.mime_type)
+ self.ls_console(req, 1)
+ else:
+ req.write("<html><head></head><body>")
+ self.print_path(req)
+ self.ls(req)
+ self.ls_console(req)
+ #self.form(req.wfile)
+ req.write("</body></html>")
+ return ''
+
+ def ls_console(self, req, use_sxp=0):
+ url = req.prePathURL()
+ if not url.endswith('/'):
+ url += '/'
+ if use_sxp:
+ consoles = self.xconsole.console_ls()
+ sxp.show(consoles, out=req)
+ else:
+ consoles = self.xconsole.consoles()
+ consoles.sort(lambda x, y: cmp(x.id, y.id))
+ req.write('<ul>')
+ for c in consoles:
+ req.write('<li><a href="%s%s"> %s</a></li>' % (url, c.id, c))
+ req.write('</ul>')
--- /dev/null
+###########################################################
+## Xen controller daemon
+## Copyright (c) 2004, K A Fraser (University of Cambridge)
+## Copyright (C) 2004, Mike Wray <mike.wray@hp.com>
+###########################################################
+
+import os
+import os.path
+import signal
+import sys
+import socket
+import pwd
+import re
+import StringIO
+
+from twisted.internet import pollreactor
+pollreactor.install()
+
+from twisted.internet import reactor
+from twisted.internet import protocol
+from twisted.internet import abstract
+from twisted.internet import defer
+
+import xend.utils
+
+from xenmgr import sxp
+from xenmgr import PrettyPrint
+from xenmgr import EventServer
+eserver = EventServer.instance()
+
+from xenmgr.server import SrvServer
+
+import channel
+import blkif
+import netif
+import console
+from params import *
+
+DEBUG = 1
+
+class MgmtProtocol(protocol.DatagramProtocol):
+ """Handler for the management socket (unix-domain).
+ """
+
+ def __init__(self, daemon):
+ #protocol.DatagramProtocol.__init__(self)
+ self.daemon = daemon
+
+ def write(self, data, addr):
+ return self.transport.write(data, addr)
+
+ def datagramReceived(self, data, addr):
+ if DEBUG: print 'datagramReceived> addr=', addr, 'data=', data
+ io = StringIO.StringIO(data)
+ try:
+ vals = sxp.parse(io)
+ res = self.dispatch(vals[0])
+ self.send_result(addr, res)
+ except SystemExit:
+ raise
+ except:
+ if DEBUG:
+ raise
+ else:
+ self.send_error(addr)
+
+ def send_reply(self, addr, sxpr):
+ io = StringIO.StringIO()
+ sxp.show(sxpr, out=io)
+ io.seek(0)
+ self.write(io.getvalue(), addr)
+
+ def send_result(self, addr, res):
+
+ def fn(res, self=self, addr=addr):
+ self.send_reply(addr, ['ok', res])
+
+ if isinstance(res, defer.Deferred):
+ res.addCallback(fn)
+ else:
+ fn(res)
+
+ def send_error(self, addr):
+ (extype, exval) = sys.exc_info()[:2]
+ self.send_reply(addr, ['err',
+ ['type', str(extype) ],
+ ['value', str(exval) ] ] )
+
+ def opname(self, name):
+ """Get the name of the method for an operation.
+ """
+ return 'op_' + name.replace('.', '_')
+
+ def operror(self, name, v):
+ """Default operation handler - signals an error.
+ """
+ raise NotImplementedError('Invalid operation: ' +name)
+
+ def dispatch(self, req):
+ """Dispatch a request to its handler.
+ """
+ op_name = sxp.name(req)
+ op_method_name = self.opname(op_name)
+ op_method = getattr(self, op_method_name, self.operror)
+ return op_method(op_name, req)
+
+ def op_console_create(self, name, req):
+ """Create a new control interface - console for a domain.
+ """
+ print name, req
+ dom = sxp.child_value(req, 'domain')
+ if not dom: raise ValueError('Missing domain')
+ dom = int(dom)
+ console_port = sxp.child_value(req, 'console_port')
+ if console_port:
+ console_port = int(console_port)
+ resp = self.daemon.console_create(dom, console_port)
+ print name, resp
+ return resp
+
+ def op_consoles(self, name, req):
+ """Get a list of the consoles.
+ """
+ return self.daemon.consoles()
+
+ def op_console_disconnect(self, name, req):
+ id = sxp.child_value(req, 'id')
+ if not id:
+ raise ValueError('Missing console id')
+ id = int(id)
+ console = self.daemon.get_console(id)
+ if not console:
+ raise ValueError('Invalid console id')
+ if console.conn:
+ console.conn.loseConnection()
+ return ['ok']
+
+ def op_blkifs(self, name, req):
+ pass
+
+ def op_blkif_devs(self, name, req):
+ pass
+
+ def op_blkif_create(self, name, req):
+ pass
+
+ def op_blkif_dev_create(self, name, req):
+ pass
+
+ def op_netifs(self, name, req):
+ pass
+
+ def op_netif_devs(self, name, req):
+ pass
+
+ def op_netif_create(self, name, req):
+ pass
+
+ def op_netif_dev_create(self, name, req):
+ pass
+
+class NotifierProtocol(protocol.Protocol):
+ """Asynchronous handler for i/o on the notifier (event channel).
+ """
+
+ def __init__(self, channelFactory):
+ self.channelFactory = channelFactory
+
+ def notificationReceived(self, idx, type):
+ #print 'NotifierProtocol>notificationReceived>', idx, type
+ channel = self.channelFactory.getChannel(idx)
+ if not channel:
+ return
+ #print 'NotifierProtocol>notificationReceived> channel', channel
+ channel.notificationReceived(type)
+
+ def connectionLost(self, reason=None):
+ pass
+
+ def doStart(self):
+ pass
+
+ def doStop(self):
+ pass
+
+ def startProtocol(self):
+ pass
+
+ def stopProtocol(self):
+ pass
+
+class NotifierPort(abstract.FileDescriptor):
+ """Transport class for the event channel.
+ """
+
+ def __init__(self, daemon, notifier, proto, reactor=None):
+ assert isinstance(proto, NotifierProtocol)
+ abstract.FileDescriptor.__init__(self, reactor)
+ self.daemon = daemon
+ self.notifier = notifier
+ self.protocol = proto
+
+ def startListening(self):
+ self._bindNotifier()
+ self._connectToProtocol()
+
+ def stopListening(self):
+ if self.connected:
+ result = self.d = defer.Deferred()
+ else:
+ result = None
+ self.loseConnection()
+ return result
+
+ def fileno(self):
+ return self.notifier.fileno()
+
+ def _bindNotifier(self):
+ self.connected = 1
+
+ def _connectToProtocol(self):
+ self.protocol.makeConnection(self)
+ self.startReading()
+
+ def loseConnection(self):
+ if self.connected:
+ self.stopReading()
+ self.disconnecting = 1
+ reactor.callLater(0, self.connectionLost)
+
+ def connectionLost(self, reason=None):
+ abstract.FileDescriptor.connectionLost(self, reason)
+ if hasattr(self, 'protocol'):
+ self.protocol.doStop()
+ self.connected = 0
+ #self.notifier.close() # Not implemented.
+ os.close(self.fileno())
+ del self.notifier
+ if hasattr(self, 'd'):
+ self.d.callback(None)
+ del self.d
+
+ def doRead(self):
+ #print 'NotifierPort>doRead>', self
+ count = 0
+ while 1:
+ #print 'NotifierPort>doRead>', count
+ notification = self.notifier.read()
+ if not notification:
+ break
+ (idx, type) = notification
+ self.protocol.notificationReceived(idx, type)
+ self.notifier.unmask(idx)
+ count += 1
+ #print 'NotifierPort>doRead<'
+
+class EventProtocol(protocol.Protocol):
+ """Asynchronous handler for a connected event socket.
+ """
+
+ def __init__(self, daemon):
+ #protocol.Protocol.__init__(self)
+ self.daemon = daemon
+ # Event queue.
+ self.queue = []
+ # Subscribed events.
+ self.events = []
+ self.parser = sxp.Parser()
+ self.pretty = 0
+
+ # For debugging subscribe to everything and make output pretty.
+ self.subscribe(['*'])
+ self.pretty = 1
+
+ def dataReceived(self, data):
+ try:
+ self.parser.input(data)
+ if self.parser.ready():
+ val = self.parser.get_val()
+ res = self.dispatch(val)
+ self.send_result(res)
+ if self.parser.at_eof():
+ self.loseConnection()
+ except SystemExit:
+ raise
+ except:
+ if DEBUG:
+ raise
+ else:
+ self.send_error()
+
+ def connectionLost(self, reason=None):
+ self.unsubscribe()
+
+ def send_reply(self, sxpr):
+ io = StringIO.StringIO()
+ if self.pretty:
+ PrettyPrint.prettyprint(sxpr, out=io)
+ else:
+ sxp.show(sxpr, out=io)
+ print >> io
+ io.seek(0)
+ return self.transport.write(io.getvalue())
+
+ def send_result(self, res):
+ return self.send_reply(['ok', res])
+
+ def send_error(self):
+ (extype, exval) = sys.exc_info()[:2]
+ return self.send_reply(['err',
+ ['type', str(extype)],
+ ['value', str(exval)]])
+
+ def send_event(self, val):
+ return self.send_reply(['event', val[0], val[1]])
+
+ def unsubscribe(self):
+ for event in self.events:
+ eserver.unsubscribe(event, self.queue_event)
+
+ def subscribe(self, events):
+ self.unsubscribe()
+ for event in events:
+ eserver.subscribe(event, self.queue_event)
+ self.events = events
+
+ def queue_event(self, name, v):
+ # Despite the name we dont' queue the event here.
+ # We send it because the transport will queue it.
+ self.send_event([name, v])
+
+ def opname(self, name):
+ return 'op_' + name.replace('.', '_')
+
+ def operror(self, name, req):
+ raise NotImplementedError('Invalid operation: ' +name)
+
+ def dispatch(self, req):
+ op_name = sxp.name(req)
+ op_method_name = self.opname(op_name)
+ op_method = getattr(self, op_method_name, self.operror)
+ return op_method(op_name, req)
+
+ def op_help(self, name, req):
+ def nameop(x):
+ if x.startswith('op_'):
+ return x[3:].replace('_', '.')
+ else:
+ return x
+
+ l = [ nameop(k) for k in dir(self) if k.startswith('op_') ]
+ return l
+
+ def op_quit(self, name, req):
+ self.loseConnection()
+
+ def op_exit(self, name, req):
+ sys.exit(0)
+
+ def op_pretty(self, name, req):
+ self.pretty = 1
+ return ['ok']
+
+ def op_console_disconnect(self, name, req):
+ id = sxp.child_value(req, 'id')
+ if not id:
+ raise ValueError('Missing console id')
+ self.daemon.console_disconnect(id)
+ return ['ok']
+
+ def op_info(self, name, req):
+ val = self.daemon.consoles()
+ return val
+
+ def op_sys_subscribe(self, name, v):
+ # (sys.subscribe event*)
+ # Subscribe to the events:
+ self.subscribe(v[1:])
+ return ['ok']
+
+ def op_sys_inject(self, name, v):
+ # (sys.inject event)
+ event = v[1]
+ eserver.inject(sxp.name(event), event)
+ return ['ok']
+
+
+class EventFactory(protocol.Factory):
+ """Asynchronous handler for the event server socket.
+ """
+ protocol = EventProtocol
+ service = None
+
+ def __init__(self, daemon):
+ #protocol.Factory.__init__(self)
+ self.daemon = daemon
+
+ def buildProtocol(self, addr):
+ proto = self.protocol(self.daemon)
+ proto.factory = self
+ return proto
+
+class Daemon:
+ """The xend daemon.
+ """
+ def __init__(self):
+ self.shutdown = 0
+
+ def daemon_pids(self):
+ pids = []
+ pidex = '(?P<pid>\d+)'
+ pythonex = '(?P<python>\S*python\S*)'
+ cmdex = '(?P<cmd>.*)'
+ procre = re.compile('^\s*' + pidex + '\s*' + pythonex + '\s*' + cmdex + '$')
+ xendre = re.compile('^/usr/sbin/xend\s*(start|restart)\s*.*$')
+ procs = os.popen('ps -e -o pid,args 2>/dev/null')
+ for proc in procs:
+ pm = procre.match(proc)
+ if not pm: continue
+ xm = xendre.match(pm.group('cmd'))
+ if not xm: continue
+ #print 'pid=', pm.group('pid'), 'cmd=', pm.group('cmd')
+ pids.append(int(pm.group('pid')))
+ return pids
+
+ def new_cleanup(self, kill=0):
+ err = 0
+ pids = self.daemon_pids()
+ if kill:
+ for pid in pids:
+ print "Killing daemon pid=%d" % pid
+ os.kill(pid, signal.SIGHUP)
+ elif pids:
+ err = 1
+ print "Daemon already running: ", pids
+ return err
+
+ def cleanup(self, kill=False):
+ # No cleanup to do if PID_FILE is empty.
+ if not os.path.isfile(PID_FILE) or not os.path.getsize(PID_FILE):
+ return 0
+ # Read the pid of the previous invocation and search active process list.
+ pid = open(PID_FILE, 'r').read()
+ lines = os.popen('ps ' + pid + ' 2>/dev/null').readlines()
+ for line in lines:
+ if re.search('^ *' + pid + '.+xend', line):
+ if not kill:
+ print "Daemon is already running (pid %d)" % int(pid)
+ return 1
+ # Old daemon is still active: terminate it.
+ os.kill(int(pid), 1)
+ # Delete the stale PID_FILE.
+ os.remove(PID_FILE)
+ return 0
+
+ def install_child_reaper(self):
+ #signal.signal(signal.SIGCHLD, self.onSIGCHLD)
+ # Ensure that zombie children are automatically reaped.
+ xend.utils.autoreap()
+
+ def onSIGCHLD(self, signum, frame):
+ code = 1
+ while code > 0:
+ code = os.waitpid(-1, os.WNOHANG)
+
+ def start(self):
+ if self.cleanup(kill=False):
+ return 1
+
+ # Detach from TTY.
+ if not DEBUG:
+ os.setsid()
+
+ if self.set_user():
+ return 1
+
+ self.install_child_reaper()
+
+ # Fork -- parent writes PID_FILE and exits.
+ pid = os.fork()
+ if pid:
+ # Parent
+ pidfile = open(PID_FILE, 'w')
+ pidfile.write(str(pid))
+ pidfile.close()
+ return 0
+ # Child
+ logfile = self.open_logfile()
+ self.redirect_output(logfile)
+ self.run()
+ return 0
+
+ def open_logfile(self):
+ if not os.path.exists(CONTROL_DIR):
+ os.makedirs(CONTROL_DIR)
+
+ # Open log file. Truncate it if non-empty, and request line buffering.
+ if os.path.isfile(LOG_FILE):
+ os.rename(LOG_FILE, LOG_FILE+'.old')
+ logfile = open(LOG_FILE, 'w+', 1)
+ return logfile
+
+ def set_user(self):
+ # Set the UID.
+ try:
+ os.setuid(pwd.getpwnam(USER)[2])
+ return 0
+ except KeyError, error:
+ print "Error: no such user '%s'" % USER
+ return 1
+
+ def redirect_output(self, logfile):
+ if DEBUG: return
+ # Close down standard file handles
+ try:
+ os.close(0) # stdin
+ os.close(1) # stdout
+ os.close(2) # stderr
+ except:
+ pass
+ # Redirect output to log file.
+ sys.stdout = sys.stderr = logfile
+
+ def stop(self):
+ return self.cleanup(kill=True)
+
+ def run(self):
+ self.createFactories()
+ self.listenMgmt()
+ self.listenEvent()
+ self.listenNotifier()
+ SrvServer.create()
+ reactor.run()
+
+ def createFactories(self):
+ self.channelF = channel.channelFactory()
+ self.blkifCF = blkif.BlkifControllerFactory()
+ self.netifCF = netif.NetifControllerFactory()
+ self.consoleCF = console.ConsoleControllerFactory()
+
+ def listenMgmt(self):
+ protocol = MgmtProtocol(self)
+ s = os.path.join(CONTROL_DIR, MGMT_SOCK)
+ if os.path.exists(s):
+ os.unlink(s)
+ return reactor.listenUNIXDatagram(s, protocol)
+
+ def listenEvent(self):
+ protocol = EventFactory(self)
+ return reactor.listenTCP(EVENT_PORT, protocol)
+
+ def listenNotifier(self):
+ protocol = NotifierProtocol(self.channelF)
+ p = NotifierPort(self, self.channelF.notifier, protocol, reactor)
+ p.startListening()
+ return p
+
+ def exit(self):
+ reactor.diconnectAll()
+ sys.exit(0)
+
+ def blkif_create(self, dom):
+ """Create a block device interface controller.
+
+ Returns Deferred
+ """
+ d = self.blkifCF.createInstance(dom)
+ return d
+
+ def blkif_dev_create(self, dom, vdev, mode, segment):
+ """Create a block device.
+
+ Returns Deferred
+ """
+ ctrl = self.blkifCF.getInstanceByDom(dom)
+ if not ctrl:
+ raise ValueError('No blkif controller: %d' % dom)
+ print 'blkif_dev_create>', dom, vdev, mode, segment
+ d = ctrl.attach_device(vdev, mode, segment)
+ return d
+
+ def netif_create(self, dom):
+ """Create a network interface controller.
+
+ """
+ return self.netifCF.createInstance(dom)
+
+ def netif_dev_create(self, dom, vif, vmac):
+ """Create a network device.
+
+ todo
+ """
+ ctrl = self.netifCF.getInstanceByDom(dom)
+ if not ctrl:
+ raise ValueError('No netif controller: %d' % dom)
+ d = ctrl.attach_device(vif, vmac)
+ return d
+
+ def console_create(self, dom, console_port=None):
+ """Create a console for a domain.
+ """
+ console = self.consoleCF.getInstanceByDom(dom)
+ if console is None:
+ console = self.consoleCF.createInstance(dom, console_port)
+ return console.sxpr()
+
+ def consoles(self):
+ return [ c.sxpr() for c in self.consoleCF.getInstances() ]
+
+ def get_console(self, id):
+ return self.consoleCF.getInstance(id)
+
+ def get_domain_console(self, dom):
+ return self.consoleCF.getInstanceByDom(dom)
+
+ def console_disconnect(self, id):
+ """Disconnect any connected console client.
+ """
+ console = self.get_console(id)
+ if not console:
+ raise ValueError('Invalid console id')
+ if console.conn:
+ console.conn.loseConnection()
+
+def instance():
+ global inst
+ try:
+ inst
+ except:
+ inst = Daemon()
+ return inst
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from SrvDir import SrvDir
+
+class SrvDeviceDir(SrvDir):
+ """Device directory.
+ """
+
+ pass
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from twisted.web import error
+from xenmgr import sxp
+from SrvBase import SrvBase
+
+class SrvConstructor:
+ """Delayed constructor for sub-servers.
+ Does not import the sub-server class or create the object until needed.
+ """
+
+ def __init__(self, klass):
+ """Create a constructor. It is assumed that the class
+ should be imported as 'import klass from klass'.
+
+ klass name of its class
+ """
+ self.klass = klass
+ self.obj = None
+
+ def getobj(self):
+ """Get the sub-server object, importing its class and instantiating it if
+ necessary.
+ """
+ if not self.obj:
+ exec 'from %s import %s' % (self.klass, self.klass)
+ klassobj = eval(self.klass)
+ self.obj = klassobj()
+ return self.obj
+
+class SrvDir(SrvBase):
+ """Base class for directory servlets.
+ """
+ isLeaf = False
+
+ def __init__(self):
+ SrvBase.__init__(self)
+ self.table = {}
+ self.order = []
+
+ def getChild(self, x, req):
+ if x == '': return self
+ val = self.get(x)
+ if val is None:
+ return error.NoResource('Not found')
+ else:
+ return val
+
+ def get(self, x):
+ val = self.table.get(x)
+ if val is not None:
+ val = val.getobj()
+ return val
+
+ def add(self, x, xclass = None):
+ if xclass is None:
+ xclass = 'SrvDir'
+ self.table[x] = SrvConstructor(xclass)
+ self.order.append(x)
+
+ def render_GET(self, req):
+ if self.use_sxp(req):
+ req.setHeader("Content-type", sxp.mime_type)
+ self.ls(req, 1)
+ else:
+ req.write('<html><head></head><body>')
+ self.print_path(req)
+ self.ls(req)
+ self.form(req)
+ req.write('</body></html>')
+ return ''
+
+ def ls(self, req, use_sxp=0):
+ url = req.prePathURL()
+ if not url.endswith('/'):
+ url += '/'
+ if use_sxp:
+ req.write('(ls ')
+ for k in self.order:
+ req.write(' ' + k)
+ req.write(')')
+ else:
+ req.write('<ul>')
+ for k in self.order:
+ v = self.get(k)
+ req.write('<li><a href="%s%s">%s</a></li>'
+ % (url, k, k))
+ req.write('</ul>')
+
+ def form(self, req):
+ pass
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from xenmgr import sxp
+from xenmgr import XendDomain
+from xenmgr import XendConsole
+from xenmgr import PrettyPrint
+from xenmgr.Args import FormFn
+
+from SrvDir import SrvDir
+
+class SrvDomain(SrvDir):
+ """Service managing a single domain.
+ """
+
+ def __init__(self, dom):
+ SrvDir.__init__(self)
+ self.dom = dom
+ self.xd = XendDomain.instance()
+ self.xconsole = XendConsole.instance()
+
+ def op_start(self, op, req):
+ val = self.xd.domain_start(self.dom.id)
+ return val
+
+ def op_stop(self, op, req):
+ val = self.xd.domain_stop(self.dom.id)
+ return val
+
+ def op_shutdown(self, op, req):
+ val = self.xd.domain_shutdown(self.dom.id)
+ req.setResponseCode(202)
+ req.setHeader("Location", "%s/.." % req.prePathURL())
+ return val
+
+ def op_halt(self, op, req):
+ val = self.xd.domain_halt(self.dom.id)
+ req.setHeader("Location", "%s/.." % req.prePathURL())
+ return val
+
+ def op_save(self, op, req):
+ fn = FormFn(self.xd.domain_save,
+ [['dom', 'int'],
+ ['dst', 'str']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_restore(self, op, req):
+ fn = FormFn(self.xd.domain_restore,
+ [['dom', 'int'],
+ ['src', 'str']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_migrate(self, op, req):
+ fn = FormFn(self.xd.domain_migrate,
+ [['dom', 'int'],
+ ['destination', 'str']])
+ val = fn(req.args, {'dom': self.dom.id})
+ val = 0 # Some migrate id.
+ req.setResponseCode(202)
+ #req.send_header("Location", "%s/.." % self.path) # Some migrate url.
+ return val
+
+ def op_pincpu(self, op, req):
+ fn = FormFn(self.xd.domain_migrate,
+ [['dom', 'int'],
+ ['cpu', 'int']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_cpu_bvt_set(self, op, req):
+ fn = FormFn(self.xd.domain_cpu_bvt_set,
+ [['dom', 'int'],
+ ['mcuadv', 'int'],
+ ['warp', 'int'],
+ ['warpl', 'int'],
+ ['warpu', 'int']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_cpu_atropos_set(self, op, req):
+ fn = FormFn(self.xd.domain_cpu_atropos_set,
+ [['dom', 'int'],
+ ['period', 'int'],
+ ['slice', 'int'],
+ ['latency', 'int'],
+ ['xtratime', 'int']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_vifs(self, op, req):
+ return self.xd.domain_vif_ls(self.dom.id)
+
+ def op_vif(self, op, req):
+ fn = FormFn(self.xd.domain_vif_get,
+ [['dom', 'int'],
+ ['vif', 'int']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_vif_stats(self, op, req):
+ #todo
+ fn = FormFn(self.xd.domain_vif_stats,
+ [['dom', 'int'],
+ ['vif', 'int']])
+ #val = fn(req.args, {'dom': self.dom.id})
+ val = 999
+ #return val
+ return val
+
+ def op_vif_ip_add(self, op, req):
+ fn = FormFn(self.xd.domain_vif_ip_add,
+ [['dom', 'int'],
+ ['vif', 'int'],
+ ['ip', 'str']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_vif_scheduler_set(self, op, req):
+ fn = FormFn(self.xd.domain_vif_scheduler_set,
+ [['dom', 'int'],
+ ['vif', 'int'],
+ ['bytes', 'int'],
+ ['usecs', 'int']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_vif_scheduler_get(self, op, req):
+ fn = FormFn(self.xd.domain_vif_scheduler_set,
+ [['dom', 'int'],
+ ['vif', 'int']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_vbds(self, op, req):
+ return self.xd.domain_vbd_ls(self.dom.id)
+
+ def op_vbd(self, op, req):
+ fn = FormFn(self.xd.domain_vbd_get,
+ [['dom', 'int'],
+ ['vbd', 'int']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_vbd_add(self, op, req):
+ fn = FormFn(self.xd.domain_vbd_add,
+ [['dom', 'int'],
+ ['uname', 'str'],
+ ['dev', 'str'],
+ ['mode', 'str']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def op_vbd_remove(self, op, req):
+ fn = FormFn(self.xd.domain_vbd_remove,
+ [['dom', 'int'],
+ ['dev', 'str']])
+ val = fn(req.args, {'dom': self.dom.id})
+ return val
+
+ def render_POST(self, req):
+ return self.perform(req)
+
+ def render_GET(self, req):
+ op = req.args.get('op')
+ if op and op[0] in ['vifs', 'vif', 'vif_stats', 'vbds', 'vbd']:
+ return self.perform(req)
+ if self.use_sxp(req):
+ req.setHeader("Content-Type", sxp.mime_type)
+ sxp.show(self.dom.sxpr(), out=req)
+ else:
+ req.write('<html><head></head><body>')
+ self.print_path(req)
+ #self.ls()
+ req.write('<p>%s</p>' % self.dom)
+ if self.dom.console:
+ cinfo = self.dom.console
+ cid = cinfo.id
+ #todo: Local xref: need to know server prefix.
+ req.write('<p><a href="/xend/console/%s">Console %s</a></p>'
+ % (cid, cid))
+ req.write('<p><a href="%s">Connect to console</a></p>'
+ % cinfo.uri())
+ if self.dom.config:
+ req.write("<code><pre>")
+ PrettyPrint.prettyprint(self.dom.config, out=req)
+ req.write("</pre></code>")
+ req.write('<a href="%s?op=vif_stats&vif=0">vif 0 stats</a>'
+ % req.prePathURL())
+ self.form(req)
+ req.write('</body></html>')
+ return ''
+
+ def form(self, req):
+ req.write('<form method="post" action="%s">' % req.prePathURL())
+ req.write('<input type="submit" name="op" value="start">')
+ req.write('<input type="submit" name="op" value="stop">')
+ req.write('<input type="submit" name="op" value="shutdown">')
+ req.write('<input type="submit" name="op" value="halt">')
+ req.write('<br><input type="submit" name="op" value="migrate">')
+ req.write('To: <input type="text" name="destination">')
+ req.write('</form>')
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from StringIO import StringIO
+
+from twisted.protocols import http
+from twisted.web import error
+
+from xenmgr import sxp
+from xenmgr import XendDomain
+
+from SrvDir import SrvDir
+from SrvDomain import SrvDomain
+
+class SrvDomainDir(SrvDir):
+ """Service that manages the domain directory.
+ """
+
+ def __init__(self):
+ SrvDir.__init__(self)
+ self.xd = XendDomain.instance()
+
+ def domain(self, x):
+ val = None
+ try:
+ dom = self.xd.domain_get(x)
+ val = SrvDomain(dom)
+ except KeyError:
+ pass
+ return val
+
+ def get(self, x):
+ v = SrvDir.get(self, x)
+ if v is not None:
+ return v
+ v = self.domain(x)
+ return v
+
+ def op_create(self, op, req):
+ ok = 0
+ try:
+ configstring = req.args.get('config')[0]
+ print 'config:', configstring
+ pin = sxp.Parser()
+ pin.input(configstring)
+ pin.input_eof()
+ config = pin.get_val()
+ ok = 1
+ except Exception, ex:
+ print ex
+ if not ok:
+ req.setResponseCode(http.BAD_REQUEST, "Invalid configuration")
+ return "Invalid configuration"
+ return error.ErrorPage(http.BAD_REQUEST,
+ "Invalid",
+ "Invalid configuration")
+ try:
+ deferred = self.xd.domain_create(config)
+ deferred.addCallback(self._cb_op_create, configstring, req)
+ return deferred
+ except Exception, ex:
+ raise
+ #return ['err', str(ex) ]
+ #req.setResponseCode(http.BAD_REQUEST, "Error creating domain")
+ #return str(ex)
+ #return error.ErrorPage(http.BAD_REQUEST,
+ # "Error creating domain",
+ # str(ex))
+
+
+ def _cb_op_create(self, dominfo, configstring, req):
+ """Callback to handle deferred domain creation.
+ """
+ dom = dominfo.id
+ domurl = "%s/%s" % (req.prePathURL(), dom)
+ req.setResponseCode(201, "created")
+ req.setHeader("Location", domurl)
+ if self.use_sxp(req):
+ return dominfo.sxpr()
+ else:
+ out = StringIO()
+ print >> out, ('<p> Created <a href="%s">Domain %s</a></p>'
+ % (domurl, dom))
+ print >> out, '<p><pre>'
+ print >> out, configstring
+ print >> out, '</pre></p>'
+ val = out.getvalue()
+ out.close()
+ return val
+
+ def render_POST(self, req):
+ return self.perform(req)
+
+ def render_GET(self, req):
+ if self.use_sxp(req):
+ req.setHeader("Content-Type", sxp.mime_type)
+ self.ls_domain(req, 1)
+ else:
+ req.write("<html><head></head><body>")
+ self.print_path(req)
+ self.ls(req)
+ self.ls_domain(req)
+ self.form(req)
+ req.write("</body></html>")
+ return ''
+
+ def ls_domain(self, req, use_sxp=0):
+ url = req.prePathURL()
+ if not url.endswith('/'):
+ url += '/'
+ if use_sxp:
+ domains = self.xd.domain_ls()
+ sxp.show(domains, out=req)
+ else:
+ domains = self.xd.domains()
+ domains.sort(lambda x, y: cmp(x.id, y.id))
+ req.write('<ul>')
+ for d in domains:
+ req.write('<li><a href="%s%s"> Domain %s</a>'
+ % (url, d.id, d.id))
+ req.write('name=%s' % d.name)
+ req.write('memory=%d'% d.memory)
+ req.write('</li>')
+ req.write('</ul>')
+
+ def form(self, req):
+ req.write('<form method="post" action="%s" enctype="multipart/form-data">'
+ % req.prePathURL())
+ req.write('<button type="submit" name="op" value="create">Create Domain</button>')
+ req.write('Config <input type="file" name="config"><br>')
+ req.write('</form>')
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from xenmgr import sxp
+from xenmgr import EventServer
+from SrvDir import SrvDir
+
+class SrvEventDir(SrvDir):
+ """Event directory.
+ """
+
+ def __init__(self):
+ SrvDir.__init__(self)
+ self.eserver = EventServer.instance()
+
+ def op_inject(self, op, req):
+ eventstring = req.args.get('event')
+ pin = sxp.Parser()
+ pin.input(eventstring)
+ pin.input_eof()
+ sxpr = pin.get_val()
+ self.eserver.inject(sxp.name(sxpr), sxpr)
+ if req.use_sxp:
+ sxp.name(sxpr)
+ else:
+ return '<code>' + eventstring + '</code>'
+
+ def render_POST(self, req):
+ return self.perform(req)
+
+ def form(self, req):
+ action = req.prePathURL()
+ req.write('<form method="post" action="%s" enctype="multipart/form-data">'
+ % action)
+ req.write('<button type="submit" name="op" value="inject">Inject</button>')
+ req.write('Event <input type="text" name="event" size="40"><br>')
+ req.write('</form>')
+ req.write('<form method="post" action="%s" enctype="multipart/form-data">'
+ % action)
+ req.write('<button type="submit" name="op" value="inject">Inject</button>')
+ req.write('Event file<input type="file" name="event"><br>')
+ req.write('</form>')
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+import os
+from SrvDir import SrvDir
+from xenmgr import sxp
+from xenmgr import XendNode
+
+class SrvNode(SrvDir):
+ """Information about the node.
+ """
+
+ def __init__(self):
+ SrvDir.__init__(self)
+ self.xn = XendNode.instance()
+
+ def op_shutdown(self, op, req):
+ val = self.xn.shutdown()
+ return val
+
+ def op_reboot(self, op, req):
+ val = self.xn.reboot()
+ return val
+
+ def op_cpu_rrobin_slice_set(self, op, req):
+ fn = FormFn(self.xn.cpu_rrobin_slice_set,
+ [['slice', 'int']])
+ val = fn(req.args, {})
+ return val
+
+ def op_cpu_bvt_slice_set(self, op, req):
+ fn = FormFn(self.xn.cpu_bvt_slice_set,
+ [['slice', 'int']])
+ val = fn(req.args, {})
+ return val
+
+ def render_POST(self, req):
+ return self.perform(req)
+
+ def render_GET(self, req):
+ if self.use_sxp(req):
+ req.setHeader("Content-Type", sxp.mime_type)
+ sxp.show(['node'] + self.info(), out=req)
+ else:
+ req.write('<html><head></head><body>')
+ self.print_path(req)
+ req.write('<ul>')
+ for d in self.info():
+ req.write('<li> %10s: %s' % (d[0], d[1]))
+ req.write('</ul>')
+ req.write('</body></html>')
+ return ''
+
+ def info(self):
+ (sys, host, rel, ver, mch) = os.uname()
+ return [['system', sys],
+ ['host', host],
+ ['release', rel],
+ ['version', ver],
+ ['machine', mch]]
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from xenmgr import XendRoot
+xroot = XendRoot.instance()
+from SrvDir import SrvDir
+
+class SrvRoot(SrvDir):
+ """The root of the xend server.
+ """
+
+ """Server sub-components. Each entry is (name, class), where
+ 'name' is the entry name and 'class' is the name of its class.
+ """
+ #todo Get this list from the XendRoot config.
+ subdirs = [
+ ('node', 'SrvNode' ),
+ ('domain', 'SrvDomainDir' ),
+ ('console', 'SrvConsoleDir' ),
+ ('event', 'SrvEventDir' ),
+ ('vdisk', 'SrvVdiskDir' ),
+ ('device', 'SrvDeviceDir' ),
+ ('vnet', 'SrvVnetDir' ),
+ ]
+
+ def __init__(self):
+ SrvDir.__init__(self)
+ for (name, klass) in self.subdirs:
+ self.add(name, klass)
+ for (name, klass) in self.subdirs:
+ self.get(name)
+ xroot.start()
--- /dev/null
+#!/usr/bin/python2
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Example xend HTTP and console server.
+
+ Can be accessed from a browser or from a program.
+ Do 'python SrvServer.py' to run the server.
+ Then point a web browser at http://localhost:8000/xend and follow the links.
+ Most are stubs, except /domain which has a list of domains and a 'create domain'
+ button.
+
+ You can also access the server from a program.
+ Do 'python XendClient.py' to run a few test operations.
+
+ The data served differs depending on the client (as defined by User-Agent
+ and Accept in the HTTP headers). If the client is a browser, data
+ is returned in HTML, with interactive forms. If the client is a program,
+ data is returned in SXP format, with no forms.
+
+ The server serves to the world by default. To restrict it to the local host
+ change 'interface' in main().
+
+ Mike Wray <mike.wray@hp.com>
+"""
+# todo Support security settings etc. in the config file.
+# todo Support command-line args.
+
+from twisted.web import server
+from twisted.web import resource
+from twisted.internet import reactor
+
+from xenmgr import XendRoot
+xroot = XendRoot.instance()
+
+from SrvRoot import SrvRoot
+
+def create(port=None, interface=None):
+ if port is None: port = 8000
+ if interface is None: interface = ''
+ root = resource.Resource()
+ xend = SrvRoot()
+ root.putChild('xend', xend)
+ site = server.Site(root)
+ reactor.listenTCP(port, site, interface=interface)
+
+
+def main(port=None, interface=None):
+ create(port, interface)
+ reactor.run()
+
+
+if __name__ == '__main__':
+ main()
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from xenmgr import XendVdisk
+from SrvVdiskDir import SrvVdiskDir
+
+class SrvVdisk(SrvDir):
+ """A virtual disk.
+ """
+
+ def __init__(self):
+ SrvDir.__init__(self)
+ self.xvdisk = XendVdisk.instance()
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from xenmgr import XendVdisk
+from SrvDir import SrvDir
+
+class SrvVdiskDir(SrvDir):
+ """Virtual disk directory.
+ """
+
+ def __init__(self):
+ SrvDir.__init__(self)
+ self.xvdisk = XendVdisk.instance()
+
+ def vdisk(self, x):
+ val = None
+ try:
+ dom = self.xvdisk.vdisk_get(x)
+ val = SrvVdisk(dom)
+ except KeyError:
+ pass
+ return val
+
+ def get(self, x):
+ v = SrvDir.get(self, x)
+ if v is not None:
+ return v
+ v = self.vdisk(x)
+ return v
--- /dev/null
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+from SrvDir import SrvDir
+
+class SrvVnetDir(SrvDir):
+ """Vnet directory.
+ """
+
+ pass
--- /dev/null
+import channel
+import controller
+from messages import *
+
+class BlkifControllerFactory(controller.ControllerFactory):
+ """Factory for creating block device interface controllers.
+ Also handles the 'back-end' channel to dom0.
+ """
+
+ # todo: add support for setting dom controlling blkifs (don't assume 0).
+ # todo: add support for 'recovery'.
+
+ def __init__(self):
+ controller.ControllerFactory.__init__(self)
+
+ self.majorTypes = [ CMSG_BLKIF_BE ]
+
+ self.subTypes = {
+ CMSG_BLKIF_BE_CREATE : self.recv_be_create,
+ CMSG_BLKIF_BE_CONNECT : self.recv_be_connect,
+ CMSG_BLKIF_BE_VBD_CREATE : self.recv_be_vbd_create,
+ CMSG_BLKIF_BE_VBD_GROW : self.recv_be_vbd_grow,
+ CMSG_BLKIF_BE_DRIVER_STATUS_CHANGED: self.recv_be_driver_status_changed,
+ }
+ self.attached = 1
+ self.registerChannel()
+
+ def createInstance(self, dom):
+ d = self.addDeferred()
+ blkif = self.getInstanceByDom(dom)
+ if blkif:
+ self.callDeferred(blkif)
+ else:
+ blkif = BlkifController(self, dom)
+ self.addInstance(blkif)
+ blkif.send_be_create()
+ return d
+
+ def setControlDomain(self, dom):
+ if self.channel:
+ self.deregisterChannel()
+ self.attached = 0
+ self.dom = dom
+ self.registerChannel()
+ #
+ #if xend.blkif.be_port:
+ # xend.blkif.recovery = True
+ #xend.blkif.be_port = xend.main.port_from_dom(dom)
+
+ def recv_be_create(self, msg, req):
+ #print 'recv_be_create>'
+ val = unpackMsg('blkif_be_create_t', msg)
+ blkif = self.getInstanceByDom(val['domid'])
+ self.callDeferred(blkif)
+
+ def recv_be_connect(self, msg, req):
+ #print 'recv_be_create>'
+ val = unpackMsg('blkif_be_connect_t', msg)
+ blkif = self.getInstanceByDom(val['domid'])
+ if blkif:
+ blkif.send_fe_interface_status_changed()
+ else:
+ pass
+
+ def recv_be_vbd_create(self, msg, req):
+ #print 'recv_be_vbd_create>'
+ val = unpackMsg('blkif_be_vbd_create_t', msg)
+ blkif = self.getInstanceByDom(val['domid'])
+ if blkif:
+ blkif.send_be_vbd_grow(val['vdevice'])
+ else:
+ pass
+
+ def recv_be_vbd_grow(self, msg, req):
+ #print 'recv_be_vbd_grow>'
+ val = unpackMsg('blkif_be_vbd_grow_t', msg)
+ # Check status?
+ if self.attached:
+ self.callDeferred(0)
+ else:
+ self.reattach_device(val['domid'], val['vdevice'])
+
+ def reattach_device(self, dom, vdev):
+ blkif = self.getInstanceByDom(dom)
+ if blkif:
+ blkif.reattach_device(vdev)
+ attached = 1
+ for blkif in self.getInstances():
+ if not blkif.attached:
+ attached = 0
+ break
+ self.attached = attached
+ if self.attached:
+ self.reattached()
+
+ def reattached(self):
+ for blkif in self.getInstances():
+ blkif.reattached()
+
+ def recv_be_driver_status_changed(self, msg, req):
+ val = unpackMsg('blkif_be_driver_status_changed_t'. msg)
+ status = val['status']
+ if status == BLKIF_DRIVER_STATUS_UP and not self.attached:
+ for blkif in self.getInstances():
+ blkif.detach()
+
+class BlkDev:
+ """Info record for a block device.
+ """
+
+ def __init__(self, vdev, mode, segment):
+ self.vdev = vdev
+ self.mode = mode
+ self.device = segment['device']
+ self.start_sector = segment['start_sector']
+ self.nr_sectors = segment['nr_sectors']
+ self.attached = 1
+
+ def readonly(self):
+ return 'w' not in self.mode
+
+class BlkifController(controller.Controller):
+ """Block device interface controller. Handles all block devices
+ for a domain.
+ """
+
+ def __init__(self, factory, dom):
+ #print 'BlkifController> dom=', dom
+ controller.Controller.__init__(self, factory, dom)
+ self.devices = {}
+
+ self.majorTypes = [ CMSG_BLKIF_FE ]
+
+ self.subTypes = {
+ CMSG_BLKIF_FE_DRIVER_STATUS_CHANGED:
+ self.recv_fe_driver_status_changed,
+ CMSG_BLKIF_FE_INTERFACE_CONNECT :
+ self.recv_fe_interface_connect,
+ }
+ self.attached = 1
+ self.registerChannel()
+ #print 'BlkifController<', 'dom=', self.dom, 'idx=', self.idx
+
+ def attach_device(self, vdev, mode, segment):
+ """Attach a device to the specified interface.
+ """
+ #print 'BlkifController>attach_device>', self.dom, vdev, mode, segment
+ if vdev in self.devices: return -1
+ dev = BlkDev(vdev, mode, segment)
+ self.devices[vdev] = dev
+ self.send_be_vbd_create(vdev)
+ return self.factory.addDeferred()
+
+ def detach(self):
+ self.attached = 0
+ for dev in self.devices.values():
+ dev.attached = 0
+ self.send_be_vbd_create(vdev)
+
+ def reattach_device(self, vdev):
+ dev = self.devices[vdev]
+ dev.attached = 1
+ attached = 1
+ for dev in self.devices.values():
+ if not dev.attached:
+ attached = 0
+ break
+ self.attached = attached
+ return self.attached
+
+ def reattached(self):
+ msg = packMsg('blkif_fe_interface_status_changed_t',
+ { 'handle' : 0,
+ 'status' : BLKIF_INTERFACE_STATUS_DISCONNECTED})
+ self.writeRequest(msg)
+
+ def recv_fe_driver_status_changed(self, msg, req):
+ msg = packMsg('blkif_fe_interface_status_changed_t',
+ { 'handle' : 0,
+ 'status' : BLKIF_INTERFACE_STATUS_DISCONNECTED,
+ 'evtchn' : 0 })
+ self.writeRequest(msg)
+
+ def recv_fe_interface_connect(self, msg, req):
+ val = unpackMsg('blkif_fe_interface_connect_t', msg)
+ self.evtchn = channel.eventChannel(0, self.dom)
+ msg = packMsg('blkif_be_connect_t',
+ { 'domid' : self.dom,
+ 'blkif_handle' : val['handle'],
+ 'evtchn' : self.evtchn['port1'],
+ 'shmem_frame' : val['shmem_frame'] })
+ self.factory.writeRequest(msg)
+ pass
+
+ #def recv_fe_interface_status_changed(self, msg, req):
+ # (hnd, status, chan) = unpackMsg('blkif_fe_interface_status_changed_t', msg)
+ # print 'recv_fe_interface_status_changed>', hnd, status, chan
+ # pass
+
+ def send_fe_interface_status_changed(self):
+ msg = packMsg('blkif_fe_interface_status_changed_t',
+ { 'handle' : 0,
+ 'status' : BLKIF_INTERFACE_STATUS_CONNECTED,
+ 'evtchn' : self.evtchn['port2'] })
+ self.writeRequest(msg)
+
+ def send_be_create(self):
+ msg = packMsg('blkif_be_create_t',
+ { 'domid' : self.dom,
+ 'blkif_handle' : 0 })
+ self.factory.writeRequest(msg)
+
+ def send_be_vbd_create(self, vdev):
+ dev = self.devices[vdev]
+ msg = packMsg('blkif_be_vbd_create_t',
+ { 'domid' : self.dom,
+ 'blkif_handle' : 0,
+ 'vdevice' : dev.vdev,
+ 'readonly' : dev.readonly() })
+ self.factory.writeRequest(msg)
+
+ def send_be_vbd_grow(self, vdev):
+ dev = self.devices[vdev]
+ msg = packMsg('blkif_be_vbd_grow_t',
+ { 'domid' : self.dom,
+ 'blkif_handle' : 0,
+ 'vdevice' : dev.vdev,
+ 'extent.device' : dev.device,
+ 'extent.sector_start' : dev.start_sector,
+ 'extent.sector_length' : dev.nr_sectors })
+ self.factory.writeRequest(msg)
+
--- /dev/null
+import Xc; xc = Xc.new()
+import xend.utils
+from messages import msgTypeName
+
+def eventChannel(dom1, dom2):
+ return xc.evtchn_bind_interdomain(dom1=dom1, dom2=dom2)
+
+class ChannelFactory:
+ """Factory for creating channels.
+ Maintains a table of channels.
+ """
+
+ channels = {}
+
+ def __init__(self):
+ self.notifier = xend.utils.notifier()
+
+ def addChannel(self, channel):
+ idx = channel.idx
+ self.channels[idx] = channel
+ self.notifier.bind(idx)
+ # Try to wake it up
+ #self.notifier.unmask(idx)
+ #channel.notify()
+
+ def getChannel(self, idx):
+ return self.channels.get(idx)
+
+ def delChannel(self, idx):
+ if idx in self.channels:
+ del self.channels[idx]
+ self.notifier.unbind(idx)
+
+ def domChannel(self, dom):
+ for chan in self.channels.values():
+ if chan.dom == dom:
+ return chan
+ chan = Channel(self, dom)
+ self.addChannel(chan)
+ return chan
+
+ def channelClosed(self, channel):
+ self.delChannel(channel.idx)
+
+ def createPort(self, dom):
+ return xend.utils.port(dom)
+
+def channelFactory():
+ global inst
+ try:
+ inst
+ except:
+ inst = ChannelFactory()
+ return inst
+
+class Channel:
+ """A control channel to a domain. Messages for the domain device controllers
+ are multiplexed over the channel (console, block devs, net devs).
+ """
+
+ def __init__(self, factory, dom):
+ self.factory = factory
+ self.dom = dom
+ self.port = self.factory.createPort(dom)
+ self.idx = self.port.local_port
+ self.devs = []
+ self.devs_by_type = {}
+ self.closed = 0
+ self.queue = []
+
+ def getIndex(self):
+ return self.idx
+
+ def getLocalPort(self):
+ return self.port.local_port
+
+ def getRemotePort(self):
+ return self.port.remote_port
+
+ def close(self):
+ for d in self.devs:
+ d.lostChannel()
+ self.factory.channelClosed(self)
+ del self.devs
+ del self.devs_by_type
+
+ def registerDevice(self, types, dev):
+ """Register a device controller.
+
+ @param types message types the controller handles
+ @param dev device controller
+ """
+ self.devs.append(dev)
+ for ty in types:
+ self.devs_by_type[ty] = dev
+
+ def unregisterDevice(self, dev):
+ """Remove the registration for a device controller.
+
+ @param dev device controller
+ """
+ self.devs.remove(dev)
+ types = [ ty for (ty, d) in self.devs_by_type.items()
+ if d == dev ]
+ for ty in types:
+ del devs_by_type[ty]
+
+ def getDevice(self, type):
+ """Get the device controller handling a message type.
+
+ @param type message type
+ @returns controller or None
+ """
+ return self.devs_by_type.get(type)
+
+ def getMessageType(self, msg):
+ hdr = msg.get_header()
+ return (hdr['type'], hdr.get('subtype'))
+
+ def __repr__(self):
+ return ('<Channel dom=%d ports=%d:%d>'
+ % (self.dom,
+ self.port.local_port,
+ self.port.remote_port))
+
+ def notificationReceived(self, type):
+ #print 'notificationReceived> type=', type, self
+ if self.closed: return
+ if type == self.factory.notifier.EXCEPTION:
+ print 'notificationReceived> EXCEPTION'
+ info = xc.evtchn_status(self.idx)
+ if info['status'] == 'unbound':
+ print 'notificationReceived> EXCEPTION closing...'
+ self.close()
+ return
+ work = 0
+ work += self.handleRequests()
+ work += self.handleResponses()
+ work += self.handleWrites()
+ if work:
+ self.notify()
+ #print 'notificationReceived<', work
+
+ def notify(self):
+ #print 'notify>', self
+ self.port.notify()
+
+ def handleRequests(self):
+ #print 'handleRequests>'
+ work = 0
+ while 1:
+ #print 'handleRequests>', work
+ msg = self.readRequest()
+ #print 'handleRequests> msg=', msg
+ if not msg: break
+ self.requestReceived(msg)
+ work += 1
+ #print 'handleRequests<', work
+ return work
+
+ def requestReceived(self, msg):
+ (ty, subty) = self.getMessageType(msg)
+ #print 'requestReceived>', ty, subty, self
+ #todo: Must respond before writing any more messages.
+ #todo: Should automate this (respond on write)
+ self.port.write_response(msg)
+ dev = self.getDevice(ty)
+ if dev:
+ dev.requestReceived(msg, ty, subty)
+ else:
+ print ("requestReceived> No device: Message type %s %d:%d"
+ % (msgTypeName(ty, subty), ty, subty)), self
+
+ def handleResponses(self):
+ #print 'handleResponses>', self
+ work = 0
+ while 1:
+ #print 'handleResponses>', work
+ msg = self.readResponse()
+ #print 'handleResponses> msg=', msg
+ if not msg: break
+ self.responseReceived(msg)
+ work += 1
+ #print 'handleResponses<', work
+ return work
+
+ def responseReceived(self, msg):
+ (ty, subty) = self.getMessageType(msg)
+ #print 'responseReceived>', ty, subty
+ dev = self.getDevice(ty)
+ if dev:
+ dev.responseReceived(msg, ty, subty)
+ else:
+ print ("responseReceived> No device: Message type %d:%d"
+ % (msgTypeName(ty, subty), ty, subty)), self
+
+ def handleWrites(self):
+ #print 'handleWrites>', self
+ work = 0
+ # Pull data from producers.
+ #print 'handleWrites> pull...'
+ for dev in self.devs:
+ work += dev.produceRequests()
+ # Flush the queue.
+ #print 'handleWrites> flush...'
+ while self.queue and self.port.space_to_write_request():
+ msg = self.queue.pop(0)
+ self.port.write_request(msg)
+ work += 1
+ #print 'handleWrites<', work
+ return work
+
+ def writeRequest(self, msg, notify=1):
+ #print 'writeRequest>', self
+ if self.closed:
+ val = -1
+ elif self.writeReady():
+ self.port.write_request(msg)
+ if notify: self.notify()
+ val = 1
+ else:
+ self.queue.append(msg)
+ val = 0
+ #print 'writeRequest<', val
+ return val
+
+ def writeResponse(self, msg):
+ #print 'writeResponse>', self
+ if self.closed: return -1
+ self.port.write_response(msg)
+ return 1
+
+ def writeReady(self):
+ if self.closed or self.queue: return 0
+ return self.port.space_to_write_request()
+
+ def readRequest(self):
+ #print 'readRequest>', self
+ if self.closed:
+ #print 'readRequest> closed'
+ return None
+ if self.port.request_to_read():
+ val = self.port.read_request()
+ else:
+ val = None
+ #print 'readRequest< ', val
+ return val
+
+ def readResponse(self):
+ #print 'readResponse>', self
+ if self.closed:
+ #print 'readResponse> closed'
+ return None
+ if self.port.response_to_read():
+ val = self.port.read_response()
+ else:
+ val = None
+ #print 'readResponse<', val
+ return val
--- /dev/null
+
+from twisted.internet import reactor
+from twisted.internet import protocol
+from twisted.protocols import telnet
+
+import xend.utils
+
+from xenmgr import EventServer
+eserver = EventServer.instance()
+
+import controller
+from messages import *
+from params import *
+
+"""Telnet binary option."""
+TRANSMIT_BINARY = '0'
+WILL = chr(251)
+IAC = chr(255)
+
+class ConsoleProtocol(protocol.Protocol):
+ """Asynchronous handler for a console TCP socket.
+ """
+
+ def __init__(self, controller, idx):
+ self.controller = controller
+ self.idx = idx
+ self.addr = None
+ self.binary = 0
+
+ def connectionMade(self):
+ peer = self.transport.getPeer()
+ self.addr = (peer.host, peer.port)
+ if self.controller.connect(self.addr, self):
+ self.transport.write("Cannot connect to console %d on domain %d\n"
+ % (self.idx, self.controller.dom))
+ self.loseConnection()
+ return
+ else:
+ self.transport.write("Connected to console %d on domain %d\n"
+ % (self.idx, self.controller.dom))
+ self.setTelnetTransmitBinary()
+ eserver.inject('xend.console.connect',
+ [self.idx, self.addr[0], self.addr[1]])
+
+ def setTelnetTransmitBinary(self):
+ """Send the sequence to set the telnet TRANSMIT-BINARY option.
+ """
+ self.write(IAC + WILL + TRANSMIT_BINARY)
+
+ def dataReceived(self, data):
+ if self.controller.handleInput(self, data):
+ self.loseConnection()
+
+ def write(self, data):
+ #if not self.connected: return -1
+ self.transport.write(data)
+ return len(data)
+
+ def connectionLost(self, reason=None):
+ eserver.inject('xend.console.disconnect',
+ [self.idx, self.addr[0], self.addr[1]])
+ self.controller.disconnect()
+
+ def loseConnection(self):
+ self.transport.loseConnection()
+
+class ConsoleFactory(protocol.ServerFactory):
+ """Asynchronous handler for a console server socket.
+ """
+ protocol = ConsoleProtocol
+
+ def __init__(self, controller, idx):
+ #protocol.ServerFactory.__init__(self)
+ self.controller = controller
+ self.idx = idx
+
+ def buildProtocol(self, addr):
+ proto = self.protocol(self.controller, self.idx)
+ proto.factory = self
+ return proto
+
+class ConsoleControllerFactory(controller.ControllerFactory):
+ """Factory for creating console controllers.
+ """
+
+ def createInstance(self, dom, console_port=None):
+ if console_port is None:
+ console_port = CONSOLE_PORT_BASE + dom
+ console = ConsoleController(self, dom, console_port)
+ self.addInstance(console)
+ eserver.inject('xend.console.create',
+ [console.idx, console.dom, console.console_port])
+ return console
+
+ def consoleClosed(self, console):
+ eserver.inject('xend.console.close', console.idx)
+ self.delInstance(console)
+
+class ConsoleController(controller.Controller):
+ """Console controller for a domain.
+ Does not poll for i/o itself, but relies on the notifier to post console
+ output and the connected TCP sockets to post console input.
+ """
+
+ def __init__(self, factory, dom, console_port):
+ #print 'ConsoleController> dom=', dom
+ controller.Controller.__init__(self, factory, dom)
+ self.majorTypes = [ CMSG_CONSOLE ]
+ self.status = "new"
+ self.addr = None
+ self.conn = None
+ self.rbuf = xend.utils.buffer()
+ self.wbuf = xend.utils.buffer()
+ self.console_port = console_port
+
+ self.registerChannel()
+ self.listener = None
+ self.listen()
+ #print 'ConsoleController<', 'dom=', self.dom, 'idx=', self.idx
+
+ def sxpr(self):
+ val =['console',
+ ['id', self.idx ],
+ ['domain', self.dom ],
+ ['local_port', self.channel.getLocalPort() ],
+ ['remote_port', self.channel.getRemotePort() ],
+ ['console_port', self.console_port ] ]
+ if self.addr:
+ val.append(['connected', self.addr[0], self.addr[1]])
+ return val
+
+ def ready(self):
+ return not (self.closed() or self.rbuf.empty())
+
+ def closed(self):
+ return self.status == 'closed'
+
+ def connected(self):
+ return self.status == 'connected'
+
+ def close(self):
+ self.status = "closed"
+ self.listener.stopListening()
+ self.deregisterChannel()
+ self.lostChannel()
+
+ def listen(self):
+ """Listen for TCP connections to the console port..
+ """
+ if self.closed(): return
+ self.status = "listening"
+ if self.listener:
+ #self.listener.startListening()
+ pass
+ else:
+ f = ConsoleFactory(self, self.idx)
+ self.listener = reactor.listenTCP(self.console_port, f)
+
+ def connect(self, addr, conn):
+ if self.closed(): return -1
+ if self.connected(): return -1
+ self.addr = addr
+ self.conn = conn
+ self.status = "connected"
+ self.handleOutput()
+ return 0
+
+ def disconnect(self):
+ self.addr = None
+ self.conn = None
+ self.listen()
+
+ def requestReceived(self, msg, type, subtype):
+ #print '***Console', self.dom, msg.get_payload()
+ self.rbuf.write(msg.get_payload())
+ self.handleOutput()
+
+ def responseReceived(self, msg, type, subtype):
+ pass
+
+ def produceRequests(self):
+ # Send as much pending console data as there is room for.
+ work = 0
+ while not self.wbuf.empty() and self.channel.writeReady():
+ msg = xend.utils.message(CMSG_CONSOLE, 0, 0)
+ msg.append_payload(self.wbuf.read(msg.MAX_PAYLOAD))
+ work += self.channel.writeRequest(msg, notify=0)
+ return work
+
+ def handleInput(self, conn, data):
+ """Handle some external input aimed at the console.
+ Called from a TCP connection (conn).
+ """
+ if self.closed(): return -1
+ if conn != self.conn: return 0
+ self.wbuf.write(data)
+ if self.produceRequests():
+ self.channel.notify()
+ return 0
+
+ def handleOutput(self):
+ """Handle buffered output from the console.
+ Sends it to the connected console (if any).
+ """
+ if self.closed():
+ #print 'Console>handleOutput> closed'
+ return -1
+ if not self.conn:
+ #print 'Console>handleOutput> not connected'
+ return 0
+ while not self.rbuf.empty():
+ try:
+ #print 'Console>handleOutput> writing...'
+ bytes = self.conn.write(self.rbuf.peek())
+ if bytes > 0:
+ self.rbuf.discard(bytes)
+ except socket.error, error:
+ pass
+ #print 'Console>handleOutput<'
+ return 0
--- /dev/null
+from twisted.internet import defer
+
+import channel
+from messages import msgTypeName
+
+class CtrlMsgRcvr:
+ """Abstract class for things that deal with a control interface to a domain.
+ """
+
+
+ def __init__(self):
+ self.channelFactory = channel.channelFactory()
+ self.majorTypes = [ ]
+ self.subTypes = {}
+ self.dom = None
+ self.channel = None
+ self.idx = None
+
+ def requestReceived(self, msg, type, subtype):
+ method = self.subTypes.get(subtype)
+ if method:
+ method(msg, 1)
+ else:
+ print ('requestReceived> No handler: Message type %s %d:%d'
+ % (msgTypeName(type, subtype), type, subtype)), self
+
+ def responseReceived(self, msg, type, subtype):
+ method = self.subTypes.get(subtype)
+ if method:
+ method(msg, 0)
+ else:
+ print ('responseReceived> No handler: Message type %s %d:%d'
+ % (msgTypeName(type, subtype), type, subtype)), self
+
+ def lostChannel(self):
+ pass
+
+ def registerChannel(self):
+ self.channel = self.channelFactory.domChannel(self.dom)
+ #print 'registerChannel> channel=', self.channel, self
+ self.idx = self.channel.getIndex()
+ #print 'registerChannel> idx=', self.idx
+ if self.majorTypes:
+ self.channel.registerDevice(self.majorTypes, self)
+
+ def deregisterChannel(self):
+ if self.channel:
+ self.channel.deregisterDevice(self)
+ del self.channel
+
+ def produceRequests(self):
+ return 0
+
+ def writeRequest(self, msg):
+ if self.channel:
+ self.channel.writeRequest(msg)
+ else:
+ print 'CtrlMsgRcvr>writeRequest>', 'no channel!', self
+
+ def writeResponse(self, msg):
+ if self.channel:
+ self.channel.writeResponse(msg)
+ else:
+ print 'CtrlMsgRcvr>writeResponse>', 'no channel!', self
+
+class ControllerFactory(CtrlMsgRcvr):
+ """Abstract class for factories creating controllers.
+ Maintains a table of instances.
+ """
+
+ def __init__(self):
+ CtrlMsgRcvr.__init__(self)
+ self.instances = {}
+ self.dlist = []
+ self.dom = 0
+
+ def addInstance(self, instance):
+ self.instances[instance.idx] = instance
+
+ def getInstance(self, idx):
+ return self.instances.get(idx)
+
+ def getInstances(self):
+ return self.instances.values()
+
+ def getInstanceByDom(self, dom):
+ for inst in self.instances.values():
+ if inst.dom == dom:
+ return inst
+ return None
+
+ def delInstance(self, instance):
+ if instance in self.instances:
+ del self.instances[instance.idx]
+
+ def createInstance(self, dom):
+ raise NotImplementedError()
+
+ def instanceClosed(self, instance):
+ self.delInstance(instance)
+
+ def addDeferred(self):
+ d = defer.Deferred()
+ self.dlist.append(d)
+ return d
+
+ def callDeferred(self, *args):
+ if self.dlist:
+ d = self.dlist.pop(0)
+ d.callback(*args)
+
+ def errDeferred(self, *args):
+ if self.dlist:
+ d = self.dlist.pop(0)
+ d.errback(*args)
+
+class Controller(CtrlMsgRcvr):
+ """Abstract class for a device controller attached to a domain.
+ """
+
+ def __init__(self, factory, dom):
+ CtrlMsgRcvr.__init__(self)
+ self.factory = factory
+ self.dom = dom
+ self.channel = None
+ self.idx = None
+
+ def close(self):
+ self.deregisterChannel()
+ self.lostChannel(self)
+
+ def lostChannel(self):
+ self.factory.instanceClosed(self)
--- /dev/null
+import struct
+
+class Struct:
+
+ maxDepth = 10
+
+ base = ['x', 'B', 'H', 'I', 'L', 'Q', 'c', 'h', 'i', 'l', 'q', ]
+
+ sizes = {'B': 1,
+ 'H': 2,
+ 'I': 4,
+ 'L': 4,
+ 'Q': 8,
+ 'c': 1,
+ 'h': 2,
+ 'i': 4,
+ 'l': 4,
+ 'q': 8,
+ 'x': 1,
+ }
+
+ formats = {
+ 'int8' : 'B',
+ 'int16' : 'H',
+ 'int32' : 'I',
+ 'int64' : 'Q',
+ 'u8' : 'B',
+ 'u16' : 'H',
+ 'u32' : 'I',
+ 'u64' : 'Q'
+ }
+
+ def typedef(self, name, val):
+ self.formats[name] = val
+
+ def struct(self, name, *f):
+ self.typedef(name, StructInfo(self, f))
+
+ def getType(self, name):
+ return self.formats[name]
+
+ def format(self, ty):
+ d = 0
+ f = ty
+ while d < self.maxDepth:
+ d += 1
+ f = self.formats[f]
+ if isinstance(f, StructInfo):
+ return f.format()
+ if f in self.base:
+ return f
+ return -1
+
+ def alignedformat(self, ty):
+ fmt = self.format(ty)
+ #print 'alignedformat> %s |%s|' %(ty, fmt)
+ afmt = self.align(fmt)
+ #print 'alignedformat< %s |%s| |%s|' % (ty, fmt, afmt)
+ return afmt
+
+ def align(self, fmt):
+ n1 = 0
+ afmt = ''
+ for a in fmt:
+ n2 = self.getSize(a)
+ m = n1 % n2
+ if m:
+ d = (n2 - m)
+ afmt += 'x' * d
+ n1 += d
+ afmt += a
+ n1 += n2
+ return afmt
+
+ def fmtsize(self, fmt):
+ s = 0
+ for f in fmt:
+ s += self.getSize(f)
+ return s
+
+ def getSize(self, f):
+ return self.sizes[f]
+
+ def pack(self, ty, data):
+ return self.getType(ty).pack(data)
+
+ def unpack(self, ty, data):
+ return self.getType(ty).unpack(data)
+
+ def show(self):
+ l = self.formats.keys()
+ l.sort()
+ for v in l:
+ print "%-35s %-10s %s" % (v, self.format(v), self.alignedformat(v))
+
+
+class StructInfo:
+
+ def __init__(self, s, f):
+ self.fmt = None
+ self.structs = s
+ self.fields = f
+
+ def alignedformat(self):
+ if self.afmt: return self.afmt
+ self.afmt = self.structs.align(self.format())
+ return self.afmt
+
+ def format(self):
+ if self.fmt: return self.fmt
+ fmt = ""
+ for (ty, name) in self.fields:
+ fmt += self.formatString(ty)
+ self.fmt = fmt
+ return fmt
+
+ def formatString(self, ty):
+ if ty in self.fields:
+ ty = self.fields[ty]
+ return self.structs.format(ty)
+
+ def pack(self, *args):
+ return struct.pack(self.alignedformat(), *args)
+
+ def unpack(self, data):
+ return struct.unpack(self.alignedformat(), data)
+
+types = Struct()
+
+types.typedef('short' , 'h')
+types.typedef('int' , 'i')
+types.typedef('long' , 'l')
+types.typedef('unsigned short', 'H')
+types.typedef('unsigned int' , 'I')
+types.typedef('unsigned long' , 'L')
+types.typedef('domid_t' , 'u64')
+types.typedef('blkif_vdev_t' , 'u16')
+types.typedef('blkif_pdev_t' , 'u16')
+types.typedef('blkif_sector_t', 'u64')
+
+types.struct('u8[6]',
+ ('u8', 'a1'),
+ ('u8', 'a2'),
+ ('u8', 'a3'),
+ ('u8', 'a4'),
+ ('u8', 'a5'),
+ ('u8', 'a6'))
+
+types.struct('blkif_fe_interface_status_changed_t',
+ ('unsigned int', 'handle'),
+ ('unsigned int', 'status'),
+ ('unsigned int', 'evtchn'))
+
+types.struct('blkif_fe_driver_status_changed_t',
+ ('unsigned int', 'status'),
+ ('unsigned int', 'nr_interfaces'))
+
+types.struct('blkif_fe_interface_connect_t',
+ ('unsigned int' , 'handle'),
+ ('unsigned long', 'shmem_frame'))
+
+types.struct('blkif_fe_interface_disconnect_t',
+ ('unsigned int', 'handle'))
+
+types.struct('blkif_extent_t',
+ ('blkif_pdev_t' , 'device'),
+ ('blkif_sector_t', 'sector_start'),
+ ('blkif_sector_t', 'sector_length'))
+
+types.struct('blkif_be_create_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'blkif_handle'),
+ ('unsigned int', 'status'))
+
+types.struct('blkif_be_destroy_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'blkif_handle'),
+ ('unsigned int', 'status'))
+
+types.struct('blkif_be_connect_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int' , 'blkif_handle'),
+ ('unsigned int' , 'evtchn'),
+ ('unsigned long', 'shmem_frame'),
+ ('unsigned int' , 'status'))
+
+types.struct('blkif_be_disconnect_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'blkif_handle'),
+ ('unsigned int', 'status'))
+
+types.struct('blkif_be_vbd_create_t',
+ ('domid_t' , 'domid'), #Q
+ ('unsigned int', 'blkif_handle'), #I
+ ('blkif_vdev_t', 'vdevice'), #H
+ ('int' , 'readonly'), #i
+ ('unsigned int', 'status')) #I
+
+types.struct('blkif_be_vbd_destroy_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'blkif_handle'),
+ ('blkif_vdev_t', 'vdevice'),
+ ('unsigned int', 'status'))
+
+types.struct('blkif_be_vbd_grow_t',
+ ('domid_t' , 'domid'), #Q
+ ('unsigned int' , 'blkif_handle'), #I
+ ('blkif_vdev_t' , 'vdevice'), #H
+ ('blkif_extent_t', 'extent'), #HQQ
+ ('unsigned int' , 'status')) #I
+
+types.struct('blkif_be_vbd_shrink_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'blkif_handle'),
+ ('blkif_vdev_t', 'vdevice'),
+ ('unsigned int', 'status'))
+
+types.struct('blkif_be_driver_status_changed_t',
+ ('unsigned int', 'status'),
+ ('unsigned int', 'nr_interfaces'))
+
+types.struct('netif_fe_interface_status_changed_t',
+ ('unsigned int', 'handle'),
+ ('unsigned int', 'status'),
+ ('unsigned int', 'evtchn'),
+ ('u8[6]', 'mac'))
+
+types.struct('netif_fe_driver_status_changed_t',
+ ('unsigned int', 'status'),
+ ('unsigned int', 'nr_interfaces'))
+
+types.struct('netif_fe_interface_connect_t',
+ ('unsigned int', 'handle'),
+ ('unsigned long', 'tx_shmem_frame'),
+ ('unsigned long', 'rx_shmem_frame'))
+
+types.struct('netif_fe_interface_disconnect_t',
+ ('unsigned int', 'handle'))
+
+types.struct('netif_be_create_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'netif_handle'),
+ ('u8[6]' , 'mac'),
+ ('unsigned int', 'status'))
+
+types.struct('netif_be_destroy_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'netif_handle'),
+ ('unsigned int', 'status'))
+
+types.struct('netif_be_connect_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int' , 'netif_handle'),
+ ('unsigned int' , 'evtchn'),
+ ('unsigned long', 'tx_shmem_frame'),
+ ('unsigned long', 'rx_shmem_frame'),
+ ('unsigned int' , 'status'))
+
+types.struct('netif_be_disconnect_t',
+ ('domid_t' , 'domid'),
+ ('unsigned int', 'netif_handle'),
+ ('unsigned int', 'status'))
+
+types.struct('netif_be_driver_status_changed_t',
+ ('unsigned int', 'status'),
+ ('unsigned int', 'nr_interfaces'))
+
+if 1 or __name__ == "__main__":
+ types.show()
--- /dev/null
+import struct
+
+import xend.utils
+
+""" All message formats.
+Added to incrementally for the various message types.
+See below.
+"""
+msg_formats = {}
+
+#============================================================================
+# Console message types.
+#============================================================================
+
+CMSG_CONSOLE = 0
+
+console_formats = { 'console_data': (CMSG_CONSOLE, 0, "?") }
+
+msg_formats.update(console_formats)
+
+#============================================================================
+# Block interface message types.
+#============================================================================
+
+CMSG_BLKIF_BE = 1
+CMSG_BLKIF_FE = 2
+
+CMSG_BLKIF_FE_INTERFACE_STATUS_CHANGED = 0
+CMSG_BLKIF_FE_DRIVER_STATUS_CHANGED = 32
+CMSG_BLKIF_FE_INTERFACE_CONNECT = 33
+CMSG_BLKIF_FE_INTERFACE_DISCONNECT = 34
+
+CMSG_BLKIF_BE_CREATE = 0
+CMSG_BLKIF_BE_DESTROY = 1
+CMSG_BLKIF_BE_CONNECT = 2
+CMSG_BLKIF_BE_DISCONNECT = 3
+CMSG_BLKIF_BE_VBD_CREATE = 4
+CMSG_BLKIF_BE_VBD_DESTROY = 5
+CMSG_BLKIF_BE_VBD_GROW = 6
+CMSG_BLKIF_BE_VBD_SHRINK = 7
+CMSG_BLKIF_BE_DRIVER_STATUS_CHANGED = 32
+
+BLKIF_DRIVER_STATUS_DOWN = 0
+BLKIF_DRIVER_STATUS_UP = 1
+
+BLKIF_INTERFACE_STATUS_DESTROYED = 0 #/* Interface doesn't exist. */
+BLKIF_INTERFACE_STATUS_DISCONNECTED = 1 #/* Exists but is disconnected. */
+BLKIF_INTERFACE_STATUS_CONNECTED = 2 #/* Exists and is connected. */
+
+BLKIF_BE_STATUS_OKAY = 0
+BLKIF_BE_STATUS_ERROR = 1
+BLKIF_BE_STATUS_INTERFACE_EXISTS = 2
+BLKIF_BE_STATUS_INTERFACE_NOT_FOUND = 3
+BLKIF_BE_STATUS_INTERFACE_CONNECTED = 4
+BLKIF_BE_STATUS_VBD_EXISTS = 5
+BLKIF_BE_STATUS_VBD_NOT_FOUND = 6
+BLKIF_BE_STATUS_OUT_OF_MEMORY = 7
+BLKIF_BE_STATUS_EXTENT_NOT_FOUND = 8
+BLKIF_BE_STATUS_MAPPING_ERROR = 9
+
+blkif_formats = {
+ 'blkif_be_connect_t':
+ (CMSG_BLKIF_BE, CMSG_BLKIF_BE_CONNECT, "QIILI"),
+
+ 'blkif_be_create_t':
+ (CMSG_BLKIF_BE, CMSG_BLKIF_BE_CREATE, "QII"),
+
+ 'blkif_be_destroy_t':
+ (CMSG_BLKIF_BE, CMSG_BLKIF_BE_DESTROY, "QII"),
+
+ 'blkif_be_vbd_create_t':
+ (CMSG_BLKIF_BE, CMSG_BLKIF_BE_VBD_CREATE, "QIHII"),
+
+ 'blkif_be_vbd_grow_t':
+ (CMSG_BLKIF_BE, CMSG_BLKIF_BE_VBD_GROW , "QIHHHQQI"),
+
+ 'blkif_fe_interface_status_changed_t':
+ (CMSG_BLKIF_FE, CMSG_BLKIF_FE_INTERFACE_STATUS_CHANGED, "III"),
+
+ 'blkif_fe_driver_status_changed_t':
+ (CMSG_BLKIF_FE, CMSG_BLKIF_FE_DRIVER_STATUS_CHANGED, "?"),
+
+ 'blkif_fe_interface_connect_t':
+ (CMSG_BLKIF_FE, CMSG_BLKIF_FE_INTERFACE_CONNECT, "IL"),
+}
+
+msg_formats.update(blkif_formats)
+
+#============================================================================
+# Network interface message types.
+#============================================================================
+
+CMSG_NETIF_BE = 3
+CMSG_NETIF_FE = 4
+
+CMSG_NETIF_FE_INTERFACE_STATUS_CHANGED = 0
+CMSG_NETIF_FE_DRIVER_STATUS_CHANGED = 32
+CMSG_NETIF_FE_INTERFACE_CONNECT = 33
+CMSG_NETIF_FE_INTERFACE_DISCONNECT = 34
+
+CMSG_NETIF_BE_CREATE = 0
+CMSG_NETIF_BE_DESTROY = 1
+CMSG_NETIF_BE_CONNECT = 2
+CMSG_NETIF_BE_DISCONNECT = 3
+CMSG_NETIF_BE_DRIVER_STATUS_CHANGED = 32
+
+NETIF_INTERFACE_STATUS_DESTROYED = 0 #/* Interface doesn't exist. */
+NETIF_INTERFACE_STATUS_DISCONNECTED = 1 #/* Exists but is disconnected. */
+NETIF_INTERFACE_STATUS_CONNECTED = 2 #/* Exists and is connected. */
+
+NETIF_DRIVER_STATUS_DOWN = 0
+NETIF_DRIVER_STATUS_UP = 1
+
+netif_formats = {
+ 'netif_be_connect_t':
+ (CMSG_NETIF_BE, CMSG_NETIF_BE_CONNECT, "QIILLI"),
+
+ 'netif_be_create_t':
+ (CMSG_NETIF_BE, CMSG_NETIF_BE_CREATE, "QIBBBBBBBBI"),
+
+ 'netif_be_destroy_t':
+ (CMSG_NETIF_BE, CMSG_NETIF_BE_DESTROY, "QII"),
+
+ 'netif_be_disconnect_t':
+ (CMSG_NETIF_BE, CMSG_NETIF_BE_DISCONNECT, "QII"),
+
+ 'netif_be_driver_status_changed_t':
+ (CMSG_NETIF_BE, CMSG_NETIF_BE_DRIVER_STATUS_CHANGED, "QII"),
+
+ 'netif_fe_driver_status_changed_t':
+ (CMSG_NETIF_FE, CMSG_NETIF_FE_DRIVER_STATUS_CHANGED, "II"),
+
+ 'netif_fe_interface_connect_t':
+ (CMSG_NETIF_FE, CMSG_NETIF_FE_INTERFACE_CONNECT, "ILL"),
+
+ 'netif_fe_interface_status_changed_t':
+ (CMSG_NETIF_FE, CMSG_NETIF_FE_INTERFACE_STATUS_CHANGED, "IIIBBBBBBBB"),
+ }
+
+msg_formats.update(netif_formats)
+
+#============================================================================
+
+class Msg:
+ pass
+
+def packMsg(ty, params):
+ print '>packMsg', ty, params
+ (major, minor, packing) = msg_formats[ty]
+ args = {}
+ for (k, v) in params.items():
+ if k == 'mac':
+ for i in range(0, 6):
+ args['mac[%d]' % i] = v[i]
+ else:
+ args[k] = v
+ for (k, v) in args.items():
+ print 'packMsg>', k, v, type(v)
+ msgid = 0
+ msg = xend.utils.message(major, minor, msgid, args)
+ return msg
+
+def unpackMsg(ty, msg):
+ args = msg.get_payload()
+ mac = [0, 0, 0, 0, 0, 0]
+ macs = []
+ for (k, v) in args.items():
+ if k.startswith('mac['):
+ macs += k
+ i = int(k[4:5])
+ mac[i] = v
+ else:
+ pass
+ if macs:
+ args['mac'] = mac
+ for k in macs:
+ del args[k]
+ print '<unpackMsg', ty, args
+ return args
+
+def msgTypeName(ty, subty):
+ for (name, info) in msg_formats.items():
+ if info[0] == ty and info[1] == subty:
+ return name
+ return None
+
--- /dev/null
+import random
+
+import channel
+import controller
+from messages import *
+
+class NetifControllerFactory(controller.ControllerFactory):
+ """Factory for creating network interface controllers.
+ Also handles the 'back-end' channel to dom0.
+ """
+ # todo: add support for setting dom controlling blkifs (don't assume 0).
+ # todo: add support for 'recovery'.
+
+ def __init__(self):
+ controller.ControllerFactory.__init__(self)
+
+ self.majorTypes = [ CMSG_NETIF_BE ]
+
+ self.subTypes = {
+ CMSG_NETIF_BE_CREATE : self.recv_be_create,
+ CMSG_NETIF_BE_CONNECT: self.recv_be_connect,
+ CMSG_NETIF_BE_DRIVER_STATUS_CHANGED: self.recv_be_driver_status_changed,
+ }
+ self.attached = 1
+ self.registerChannel()
+
+ def createInstance(self, dom):
+ #print 'netif>createInstance> dom=', dom
+ netif = self.getInstanceByDom(dom)
+ if netif is None:
+ netif = NetifController(self, dom)
+ self.addInstance(netif)
+ return netif
+
+ def setControlDomain(self, dom):
+ self.deregisterChannel()
+ self.attached = 0
+ self.dom = dom
+ self.registerChannel()
+ #
+ #if xend.netif.be_port.remote_dom != 0:
+ # xend.netif.recovery = True
+ # xend.netif.be_port = xend.main.port_from_dom(dom)
+ #
+ pass
+
+ def recv_be_create(self, msg, req):
+ self.callDeferred(0)
+
+ def recv_be_connect(self, msg, req):
+ val = unpackMsg('netif_be_connect_t', msg)
+ dom = val['domid']
+ vif = val['netif_handle']
+ netif = self.getInstanceByDom(dom)
+ if netif:
+ netif.send_interface_connected(vif)
+ else:
+ print "recv_be_connect> unknown vif=", vif
+ pass
+
+ def recv_be_driver_status_changed(self, msg, req):
+ val = unpackMsg('netif_be_driver_status_changed_t', msg)
+ status = val['status']
+ if status == NETIF_DRIVER_STATUS_UP and not self.attached:
+ for netif in self.getInstances():
+ netif.reattach_devices()
+ self.attached = 1
+
+## pl = msg.get_payload()
+## status = pl['status']
+## if status == NETIF_DRIVER_STATUS_UP:
+## if xend.netif.recovery:
+## print "New netif backend now UP, notifying guests:"
+## for netif_key in interface.list.keys():
+## netif = interface.list[netif_key]
+## netif.create()
+## print " Notifying %d" % netif.dom
+## msg = xend.utils.message(
+## CMSG_NETIF_FE,
+## CMSG_NETIF_FE_INTERFACE_STATUS_CHANGED, 0,
+## { 'handle' : 0, 'status' : 1 })
+## netif.ctrlif_tx_req(xend.main.port_from_dom(netif.dom),msg)
+## print "Done notifying guests"
+## recovery = False
+
+class NetDev:
+ """Info record for a network device.
+ """
+
+ def __init__(self, vif, mac):
+ self.vif = vif
+ self.mac = mac
+ self.evtchn = None
+
+class NetifController(controller.Controller):
+ """Network interface controller. Handles all network devices for a domain.
+ """
+
+ def __init__(self, factory, dom):
+ #print 'NetifController> dom=', dom
+ controller.Controller.__init__(self, factory, dom)
+ self.devices = {}
+
+ self.majorTypes = [ CMSG_NETIF_FE ]
+
+ self.subTypes = {
+ CMSG_NETIF_FE_DRIVER_STATUS_CHANGED:
+ self.recv_fe_driver_status_changed,
+ CMSG_NETIF_FE_INTERFACE_CONNECT :
+ self.recv_fe_interface_connect,
+ }
+ self.registerChannel()
+ #print 'NetifController<', 'dom=', self.dom, 'idx=', self.idx
+
+
+ def randomMAC(self):
+ # VIFs get a random MAC address with a "special" vendor id.
+ #
+ # NB. The vendor is currently an "obsolete" one that used to belong
+ # to DEC (AA-00-00). Using it is probably a bit rude :-)
+ #
+ # NB2. The first bit of the first random octet is set to zero for
+ # all dynamic MAC addresses. This may allow us to manually specify
+ # MAC addresses for some VIFs with no fear of clashes.
+ mac = [ 0xaa, 0x00, 0x00,
+ random.randint(0x00, 0x7f),
+ random.randint(0x00, 0xff),
+ random.randint(0x00, 0xff) ]
+ return mac
+
+ def attach_device(self, vif, vmac):
+ if vmac is None:
+ mac = self.randomMAC()
+ else:
+ mac = [ int(x, 16) for x in vmac.split(':') ]
+ if len(mac) != 6: raise ValueError("invalid mac")
+ #print "attach_device>", "vif=", vif, "mac=", mac
+ self.devices[vif] = NetDev(vif, mac)
+ d = self.factory.addDeferred()
+ self.send_be_create(vif)
+ return d
+
+ def reattach_devices(self):
+ d = self.factory.addDeferred()
+ self.send_be_create(vif)
+ self.attach_fe_devices(0)
+
+ def attach_fe_devices(self):
+ for dev in self.devices.values():
+ msg = packMsg('netif_fe_interface_status_changed_t',
+ { 'handle' : dev.vif,
+ 'status' : NETIF_INTERFACE_STATUS_DISCONNECTED,
+ 'evtchn' : 0,
+ 'mac' : dev.mac })
+ self.writeRequest(msg)
+
+ def recv_fe_driver_status_changed(self, msg, req):
+ if not req: return
+ msg = packMsg('netif_fe_driver_status_changed_t',
+ { 'status' : NETIF_DRIVER_STATUS_UP,
+ 'nr_interfaces' : len(self.devices) })
+ self.writeRequest(msg)
+ self.attach_fe_devices()
+
+ def recv_fe_interface_connect(self, msg, req):
+ val = unpackMsg('netif_fe_interface_connect_t', msg)
+ dev = self.devices[val['handle']]
+ dev.evtchn = channel.eventChannel(0, self.dom)
+ msg = packMsg('netif_be_connect_t',
+ { 'domid' : self.dom,
+ 'netif_handle' : dev.vif,
+ 'evtchn' : dev.evtchn['port1'],
+ 'tx_shmem_frame' : val['tx_shmem_frame'],
+ 'rx_shmem_frame' : val['rx_shmem_frame'] })
+ self.factory.writeRequest(msg)
+
+ #def recv_fe_interface_status_changed(self):
+ # print 'recv_fe_interface_status_changed>'
+ # pass
+
+ def send_interface_connected(self, vif):
+ dev = self.devices[vif]
+ msg = packMsg('netif_fe_interface_status_changed_t',
+ { 'handle' : dev.vif,
+ 'status' : NETIF_INTERFACE_STATUS_CONNECTED,
+ 'evtchn' : dev.evtchn['port2'],
+ 'mac' : dev.mac })
+ self.writeRequest(msg)
+
+ def send_be_create(self, vif):
+ dev = self.devices[vif]
+ msg = packMsg('netif_be_create_t',
+ { 'domid' : self.dom,
+ 'netif_handle' : dev.vif,
+ 'mac' : dev.mac })
+ self.factory.writeRequest(msg)
+
+ def send_be_destroy(self, vif):
+ print 'send_be_destroy>', 'dom=', self.dom, 'vif=', vif
+ dev = self.devices[vif]
+ del self.devices[vif]
+ msg = packMsg('netif_be_destroy_t',
+ { 'domid' : self.dom,
+ 'netif_handle' : vif })
+ self.factory.writeRequest(msg)
--- /dev/null
+# The following parameters could be placed in a configuration file.
+PID_FILE = '/var/run/xend.pid'
+LOG_FILE = '/var/log/xend.log'
+USER = 'root'
+CONTROL_DIR = '/var/run/xend'
+MGMT_SOCK = 'xenmgrsock' # relative to CONTROL_DIR
+EVENT_PORT = 8001
+
+CONSOLE_PORT_BASE = 9600
+
--- /dev/null
+#!/usr/bin/python2
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+"""
+Input-driven parsing for s-expression (sxp) format.
+Create a parser: pin = Parser();
+Then call pin.input(buf) with your input.
+Call pin.input_eof() when done.
+Use pin.read() to see if a value has been parsed, pin.get_val()
+to get a parsed value. You can call ready and get_val at any time -
+you don't have to wait until after calling input_eof.
+
+"""
+from __future__ import generators
+
+import sys
+import types
+import errno
+import string
+
+__all__ = [
+ "mime_type",
+ "ParseError",
+ "Parser",
+ "atomp",
+ "show",
+ "show_xml",
+ "elementp",
+ "name",
+ "attributes",
+ "attribute",
+ "children",
+ "child",
+ "child_at",
+ "child0",
+ "child1",
+ "child2",
+ "child3",
+ "child4",
+ "child_value",
+ "has_id",
+ "with_id",
+ "child_with_id",
+ "elements",
+ "parse",
+ ]
+
+mime_type = "application/sxp"
+
+escapes = {
+ 'a': '\a',
+ 'b': '\b',
+ 't': '\t',
+ 'n': '\n',
+ 'v': '\v',
+ 'f': '\f',
+ 'r': '\r',
+ '\\': '\\',
+ '\'': '\'',
+ '\"': '\"'}
+
+k_list_open = "("
+k_list_close = ")"
+k_attr_open = "@"
+k_eval = "!"
+
+escapes_rev = {}
+for k in escapes:
+ escapes_rev[escapes[k]] = k
+
+class ParseError(StandardError):
+
+ def __init__(self, parser, value):
+ self.parser = parser
+ self.value = value
+
+ def __str__(self):
+ return self.value
+
+class ParserState:
+
+ def __init__(self, fn, parent=None):
+ self.parent = parent
+ self.buf = ''
+ self.val = []
+ self.delim = None
+ self.fn = fn
+
+ def push(self, fn):
+ return ParserState(fn, parent=self)
+
+class Parser:
+
+ def __init__(self):
+ self.error = sys.stderr
+ self.reset()
+
+ def reset(self):
+ self.val = []
+ self.eof = 0
+ self.err = 0
+ self.line_no = 0
+ self.char_no = 0
+ self.state = None
+
+ def push_state(self, fn):
+ self.state = self.state.push(fn)
+
+ def pop_state(self):
+ val = self.state
+ self.state = self.state.parent
+ if self.state and self.state.fn == self.state_start:
+ # Return to start state - produce the value.
+ self.val += self.state.val
+ self.state.val = []
+ return val
+
+ def in_class(self, c, s):
+ return s.find(c) >= 0
+
+ def in_space_class(self, c):
+ return self.in_class(c, ' \t\n\v\f\r')
+
+ def is_separator(self, c):
+ return self.in_class(c, '{}()<>[]!;')
+
+ def in_comment_class(self, c):
+ return self.in_class(c, '#')
+
+ def in_string_quote_class(self, c):
+ return self.in_class(c, '"\'')
+
+ def in_printable_class(self, c):
+ return self.in_class(c, string.printable)
+
+ def set_error_stream(self, error):
+ self.error = error
+
+ def has_error(self):
+ return self.err > 0
+
+ def at_eof(self):
+ return self.eof
+
+ def input_eof(self):
+ self.eof = 1
+ self.input_char(-1)
+
+ def input(self, buf):
+ if not buf or len(buf) == 0:
+ self.input_eof()
+ else:
+ for c in buf:
+ self.input_char(c)
+
+ def input_char(self, c):
+ if self.at_eof():
+ pass
+ elif c == '\n':
+ self.line_no += 1
+ self.char_no = 0
+ else:
+ self.char_no += 1
+
+ if self.state is None:
+ self.begin_start(None)
+ self.state.fn(c)
+
+ def ready(self):
+ return len(self.val) > 0
+
+ def get_val(self):
+ v = self.val[0]
+ self.val = self.val[1:]
+ return v
+
+ def get_all(self):
+ return self.val
+
+ def begin_start(self, c):
+ self.state = ParserState(self.state_start)
+
+ def end_start(self):
+ self.val += self.state.val
+ self.pop_state()
+
+ def state_start(self, c):
+ if self.at_eof():
+ self.end_start()
+ elif self.in_space_class(c):
+ pass
+ elif self.in_comment_class(c):
+ self.begin_comment(c)
+ elif c == k_list_open:
+ self.begin_list(c)
+ elif c == k_list_close:
+ raise ParseError(self, "syntax error: "+c)
+ elif self.in_string_quote_class(c):
+ self.begin_string(c)
+ elif self.in_printable_class(c):
+ self.begin_atom(c)
+ elif c == chr(4):
+ # ctrl-D, EOT: end-of-text.
+ self.input_eof()
+ else:
+ raise ParseError(self, "invalid character: code %d" % ord(c))
+
+ def begin_comment(self, c):
+ self.push_state(self.state_comment)
+ self.state.buf += c
+
+ def end_comment(self):
+ self.pop_state()
+
+ def state_comment(self, c):
+ if c == '\n' or self.at_eof():
+ self.end_comment()
+ else:
+ self.state.buf += c
+
+ def begin_string(self, c):
+ self.push_state(self.state_string)
+ self.state.delim = c
+
+ def end_string(self):
+ val = self.state.buf
+ self.state.parent.val.append(val)
+ self.pop_state()
+
+ def state_string(self, c):
+ if self.at_eof():
+ raise ParseError(self, "unexpected EOF")
+ elif c == self.state.delim:
+ self.end_string()
+ elif c == '\\':
+ self.push_state(self.state_escape)
+ else:
+ self.state.buf += c
+
+ def state_escape(self, c):
+ if self.at_eof():
+ raise ParseError(self, "unexpected EOF")
+ d = escapes.get(c)
+ if d:
+ self.state.parent.buf += d
+ self.pop_state()
+ elif c == 'x':
+ self.state.fn = self.state_hex
+ self.state.val = 0
+ else:
+ self.state.fn = self.state_octal
+ self.state.val = 0
+ self.input_char(c)
+
+ def state_octal(self, c):
+ def octaldigit(c):
+ self.state.val *= 8
+ self.state.val += ord(c) - ord('0')
+ self.state.buf += c
+ if self.state.val < 0 or self.state.val > 0xff:
+ raise ParseError(self, "invalid octal escape: out of range " + self.state.buf)
+ if len(self.state.buf) == 3:
+ octaldone()
+
+ def octaldone():
+ d = chr(self.state.val)
+ self.state.parent.buf += d
+ self.pop_state()
+
+ if self.at_eof():
+ raise ParseError(self, "unexpected EOF")
+ elif '0' <= c <= '7':
+ octaldigit(c)
+ elif len(self.buf):
+ octaldone()
+ self.input_char(c)
+
+ def state_hex(self, c):
+ def hexdone():
+ d = chr(self.state.val)
+ self.state.parent.buf += d
+ self.pop_state()
+
+ def hexdigit(c, d):
+ self.state.val *= 16
+ self.state.val += ord(c) - ord(d)
+ self.state.buf += c
+ if self.state.val < 0 or self.state.val > 0xff:
+ raise ParseError(self, "invalid hex escape: out of range " + self.state.buf)
+ if len(self.state.buf) == 2:
+ hexdone()
+
+ if self.at_eof():
+ raise ParseError(self, "unexpected EOF")
+ elif '0' <= c <= '9':
+ hexdigit(c, '0')
+ elif 'A' <= c <= 'F':
+ hexdigit(c, 'A')
+ elif 'a' <= c <= 'f':
+ hexdigit(c, 'a')
+ elif len(buf):
+ hexdone()
+ self.input_char(c)
+
+ def begin_atom(self, c):
+ self.push_state(self.state_atom)
+ self.state.buf = c
+
+ def end_atom(self):
+ val = self.state.buf
+ self.state.parent.val.append(val)
+ self.pop_state()
+
+ def state_atom(self, c):
+ if self.at_eof():
+ self.end_atom()
+ elif (self.is_separator(c) or
+ self.in_space_class(c) or
+ self.in_comment_class(c)):
+ self.end_atom()
+ self.input_char(c)
+ else:
+ self.state.buf += c
+
+ def begin_list(self, c):
+ self.push_state(self.state_list)
+
+ def end_list(self):
+ val = self.state.val
+ self.state.parent.val.append(val)
+ self.pop_state()
+
+ def state_list(self, c):
+ if self.at_eof():
+ raise ParseError(self, "unexpected EOF")
+ elif c == k_list_close:
+ self.end_list()
+ else:
+ self.state_start(c)
+
+def atomp(sxpr):
+ if sxpr.isalnum() or sxpr == '@':
+ return 1
+ for c in sxpr:
+ if c in string.whitespace: return 0
+ if c in '"\'\\(){}[]<>$#&%^': return 0
+ if c in string.ascii_letters: continue
+ if c in string.digits: continue
+ if c in '.-_:/~': continue
+ return 0
+ return 1
+
+def show(sxpr, out=sys.stdout):
+ if isinstance(sxpr, types.ListType):
+ out.write(k_list_open)
+ i = 0
+ for x in sxpr:
+ if i: out.write(' ')
+ show(x, out)
+ i += 1
+ out.write(k_list_close)
+ elif isinstance(sxpr, types.StringType) and atomp(sxpr):
+ out.write(sxpr)
+ else:
+ #out.write("'" + str(sxpr) + "'")
+ out.write(repr(str(sxpr)))
+
+def show_xml(sxpr, out=sys.stdout):
+ if isinstance(sxpr, types.ListType):
+ element = name(sxpr)
+ out.write('<%s' % element)
+ for attr in attributes(sxpr):
+ out.write(' %s=%s' % (attr[0], attr[1]))
+ out.write('>')
+ i = 0
+ for x in children(sxpr):
+ if i: out.write(' ')
+ show_xml(x, out)
+ i += 1
+ out.write('</%s>' % element)
+ elif isinstance(sxpr, types.StringType) and atomp(sxpr):
+ out.write(sxpr)
+ else:
+ out.write(str(sxpr))
+
+def elementp(sxpr, elt=None):
+ return (isinstance(sxpr, types.ListType)
+ and len(sxpr)
+ and (None == elt or sxpr[0] == elt))
+
+def name(sxpr):
+ val = None
+ if isinstance(sxpr, types.StringType):
+ val = sxpr
+ elif isinstance(sxpr, types.ListType) and len(sxpr):
+ val = sxpr[0]
+ return val
+
+def attributes(sxpr):
+ val = []
+ if isinstance(sxpr, types.ListType) and len(sxpr) > 1:
+ attr = sxpr[1]
+ if elementp(attr, k_attr_open):
+ val = attr[1:]
+ return val
+
+def attribute(sxpr, key, val=None):
+ for x in attributes(sxpr):
+ if x[0] == key:
+ val = x[1]
+ break
+ return val
+
+def children(sxpr, elt=None):
+ val = []
+ if isinstance(sxpr, types.ListType) and len(sxpr) > 1:
+ i = 1
+ x = sxpr[i]
+ if elementp(x, k_attr_open):
+ i += 1
+ val = sxpr[i : ]
+ if elt:
+ def iselt(x):
+ return elementp(x, elt)
+ val = filter(iselt, val)
+ return val
+
+def child(sxpr, elt, val=None):
+ for x in children(sxpr):
+ if elementp(x, elt):
+ val = x
+ break
+ return val
+
+def child_at(sxpr, index, val=None):
+ kids = children(sxpr)
+ if len(kids) > index:
+ val = kids[index]
+ return val
+
+def child0(sxpr, val=None):
+ return child_at(sxpr, 0, val)
+
+def child1(sxpr, val=None):
+ return child_at(sxpr, 1, val)
+
+def child2(sxpr, val=None):
+ return child_at(sxpr, 2, val)
+
+def child3(sxpr, val=None):
+ return child_at(sxpr, 3, val)
+
+def child4(sxpr, val=None):
+ return child_at(sxpr, 4, val)
+
+def child_value(sxpr, elt, val=None):
+ kid = child(sxpr, elt)
+ if kid:
+ val = child_at(kid, 0, val)
+ return val
+
+def has_id(sxpr, id):
+ """Test if an s-expression has a given id.
+ """
+ return attribute(sxpr, 'id') == id
+
+def with_id(sxpr, id, val=None):
+ """Find the first s-expression with a given id, at any depth.
+
+ sxpr s-exp or list
+ id id
+ val value if not found (default None)
+
+ return s-exp or val
+ """
+ if isinstance(sxpr, types.ListType):
+ for n in sxpr:
+ if has_id(n, id):
+ val = n
+ break
+ v = with_id(n, id)
+ if v is None: continue
+ val = v
+ break
+ return val
+
+def child_with_id(sxpr, id, val=None):
+ """Find the first child with a given id.
+
+ sxpr s-exp or list
+ id id
+ val value if not found (default None)
+
+ return s-exp or val
+ """
+ if isinstance(sxpr, types.ListType):
+ for n in sxpr:
+ if has_id(n, id):
+ val = n
+ break
+ return val
+
+def elements(sxpr, ctxt=None):
+ """Generate elements (at any depth).
+ Visit elements in pre-order.
+ Values generated are (node, context)
+ The context is None if there is no parent, otherwise
+ (index, parent, context) where index is the node's index w.r.t its parent,
+ and context is the parent's context.
+
+ sxpr s-exp
+
+ returns generator
+ """
+ yield (sxpr, ctxt)
+ i = 0
+ for n in children(sxpr):
+ if isinstance(n, types.ListType):
+ # Calling elements() recursively does not generate recursively,
+ # it just returns a generator object. So we must iterate over it.
+ for v in elements(n, (i, sxpr, ctxt)):
+ yield v
+ i += 1
+
+def parse(io):
+ """Completely parse all input from 'io'.
+
+ io input file object
+ returns list of values, None if incomplete
+ raises ParseError on parse error
+ """
+ pin = Parser()
+ while 1:
+ buf = io.readline()
+ pin.input(buf)
+ if len(buf) == 0:
+ break
+ if pin.ready():
+ val = pin.get_all()
+ else:
+ val = None
+ return val
+
+
+if __name__ == '__main__':
+ print ">main"
+ pin = Parser()
+ while 1:
+ buf = sys.stdin.read(1024)
+ #buf = sys.stdin.readline()
+ pin.input(buf)
+ while pin.ready():
+ val = pin.get_val()
+ print
+ print '****** val=', val
+ if len(buf) == 0:
+ break
+
--- /dev/null
+#!/usr/bin/python
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+#============================================================================
+# Move the IP address from eth0 onto the Xen bridge (nbe-br).
+# Works best if the bridge control utils (brctl) have been installed.
+#============================================================================
+import os
+import os.path
+import re
+import sys
+
+from getopt import getopt
+
+CMD_IFCONFIG = '/sbin/ifconfig'
+CMD_ROUTE = '/sbin/route'
+CMD_BRCTL = '/usr/local/sbin/brctl'
+
+def routes():
+ """Return a list of the routes.
+ """
+ fin = os.popen(CMD_ROUTE + ' -n', 'r')
+ routes = []
+ for x in fin:
+ if x.startswith('Kernel'): continue
+ if x.startswith('Destination'): continue
+ x = x.strip()
+ y = x.split()
+ z = { 'destination': y[0],
+ 'gateway' : y[1],
+ 'mask' : y[2],
+ 'flags' : y[3],
+ 'metric' : y[4],
+ 'ref' : y[5],
+ 'use' : y[6],
+ 'interface' : y[7] }
+ routes.append(z)
+ return routes
+
+def cmd(p, s):
+ """Print and execute command 'p' with args 's'.
+ """
+ global opts
+ c = p + ' ' + s
+ if opts.verbose: print c
+ if not opts.dryrun:
+ os.system(c)
+
+def ifconfig(interface):
+ """Return the ip config for an interface,
+ """
+ fin = os.popen(CMD_IFCONFIG + ' %s' % interface, 'r')
+ inetre = re.compile('\s*inet\s*addr:(?P<address>\S*)\s*Bcast:(?P<broadcast>\S*)\s*Mask:(?P<mask>\S*)')
+ info = None
+ for x in fin:
+ m = inetre.match(x)
+ if not m: continue
+ info = m.groupdict()
+ info['interface'] = interface
+ break
+ return info
+
+def reconfigure(interface, bridge):
+ """Reconfigure an interface to be attached to a bridge, and give the bridge
+ the IP address etc. from interface. Move the default route to the interface
+ to the bridge.
+ """
+ intf_info = ifconfig(interface)
+ if not intf_info:
+ print 'Interface not found:', interface
+ return
+ #bridge_info = ifconfig(bridge)
+ #if not bridge_info:
+ # print 'Bridge not found:', bridge
+ # return
+ route_info = routes()
+ intf_info['bridge'] = bridge
+ intf_info['gateway'] = None
+ for r in route_info:
+ if (r['destination'] == '0.0.0.0' and
+ 'G' in r['flags'] and
+ r['interface'] == interface):
+ intf_info['gateway'] = r['gateway']
+ if not intf_info['gateway']:
+ print 'Gateway not found: ', interface
+ return
+ cmd(CMD_IFCONFIG, '%(interface)s 0.0.0.0' % intf_info)
+ cmd(CMD_IFCONFIG, '%(bridge)s %(address)s netmask %(mask)s broadcast %(broadcast)s up' % intf_info)
+ cmd(CMD_ROUTE, 'add default gateway %(gateway)s dev %(bridge)s' % intf_info)
+ if os.path.exists(CMD_BRCTL):
+ cmd(CMD_BRCTL, 'addif %(bridge)s %(interface)s' % intf_info)
+
+defaults = {
+ 'interface': 'eth0',
+ 'bridge' : 'nbe-br',
+ 'verbose' : 1,
+ 'dryrun' : 0,
+ }
+
+short_options = 'hvqni:b:'
+long_options = ['help', 'verbose', 'quiet', 'interface=', 'bridge=']
+
+def usage():
+ print """Usage:
+ %s [options]
+
+ Reconfigure routing so that <bridge> has the IP address from
+ <interface>. This lets IP carry on working when <interface>
+ is attached to <bridge> for virtual networking.
+ If brctl is available, <interface> is added to <bridge>,
+ so this can be run before any domains have been created.
+ """ % sys.argv[0]
+ print """
+ -i, --interface <interface> interface, default %(interface)s.
+ -b, --bridge <bridge> bridge, default %(bridge)s.
+ -v, --verbose Print commands.
+ -q, --quiet Don't print commands.
+ -n, --dry-run Don't execute commands.
+ -h, --help Print this help.
+ """ % defaults
+ sys.exit(1)
+
+class Opts:
+
+ def __init__(self, defaults):
+ for (k, v) in defaults.items():
+ setattr(self, k, v)
+ pass
+
+def main():
+ global opts
+ opts = Opts(defaults)
+ (options, args) = getopt(sys.argv[1:], short_options, long_options)
+ if args: usage()
+ for k, v in options:
+ if k in ['-h', '--help']:
+ usage()
+ elif k in ['-i', '--interface']:
+ opts.interface = v
+ elif k in ['-b', '--bridge']:
+ opts.bridge = v
+ elif k in ['-q', '--quiet']:
+ opts.verbose = 0
+ elif k in ['-v', '--verbose']:
+ opts.verbose = 1
+ elif k in ['-n', '--dry-run']:
+ opts.dryrun = 1
+ reconfigure(opts.interface, opts.bridge)
+
+if __name__ == '__main__':
+ main()
--- /dev/null
+
+from distutils.core import setup, Extension
+
+PACKAGE = 'xenmgr'
+VERSION = '1.0'
+
+setup(name = PACKAGE,
+ version = VERSION,
+ description = 'Xen Management API',
+ author = 'Mike Wray',
+ author_email = 'mike.wray@hp.com',
+ packages = [ PACKAGE, PACKAGE + '.server' ],
+ package_dir = { PACKAGE: 'lib' },
+ )
--- /dev/null
+#!/usr/bin/python
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Xen management daemon. Lives in /usr/sbin.
+ Provides console server and HTTP management api.
+
+ Run:
+
+ xend start
+
+ The daemon is stopped with:
+
+ xend stop
+
+ Unfortunately restarting it upsets the channel to dom0 and
+ domain management stops working - needs a reboot to fix.
+"""
+import os
+import sys
+from xenmgr.server import SrvConsoleServer
+
+def main():
+ daemon = SrvConsoleServer.instance()
+ if not sys.argv[1:]:
+ print 'usage: %s {start|stop|restart}' % sys.argv[0]
+ elif os.fork():
+ pid, status = os.wait()
+ return status >> 8
+ elif sys.argv[1] == 'start':
+ return daemon.start()
+ elif sys.argv[1] == 'stop':
+ return daemon.stop()
+ elif sys.argv[1] == 'restart':
+ return daemon.stop() or daemon.start()
+ else:
+ print 'not an option:', sys.argv[1]
+ return 1
+
+if __name__ == '__main__':
+ sys.exit(main())
--- /dev/null
+#!/usr/bin/python
+# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
+
+"""Xen management daemon. Lives in /usr/sbin.
+ Run after running xend to provide http access to the management API.
+
+ NO LONGER NEEDED.
+"""
+from xenmgr.server import SrvServer
+SrvServer.main()
projects / xen.git / commitdiff