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#!/usr/bin/python
##
# QEMU Object Model test tools
#
# Copyright IBM, Corp. 2012
#
# Authors:
# Anthony Liguori <aliguori@us.ibm.com>
#
# This work is licensed under the terms of the GNU GPL, version 2 or later. See
# the COPYING file in the top-level directory.
##
from __future__ import absolute_import
import fuse, stat
from fuse import Fuse
import os, posix
from errno import *
from .qmp import QEMUMonitorProtocol
fuse.fuse_python_api = (0, 2)
class QOMFS(Fuse):
def __init__(self, qmp, *args, **kwds):
Fuse.__init__(self, *args, **kwds)
self.qmp = qmp
self.qmp.connect()
self.ino_map = {}
self.ino_count = 1
def get_ino(self, path):
if path in self.ino_map:
return self.ino_map[path]
self.ino_map[path] = self.ino_count
self.ino_count += 1
return self.ino_map[path]
def is_object(self, path):
try:
items = self.qmp.command('qom-list', path=path)
return True
except:
return False
def is_property(self, path):
try:
path, prop = path.rsplit('/', 1)
for item in self.qmp.command('qom-list', path=path):
if item['name'] == prop:
return True
return False
except:
return False
def is_link(self, path):
try:
path, prop = path.rsplit('/', 1)
for item in self.qmp.command('qom-list', path=path):
if item['name'] == prop:
if item['type'].startswith('link<'):
return True
return False
return False
except:
return False
def read(self, path, length, offset):
if not self.is_property(path):
return -ENOENT
path, prop = path.rsplit('/', 1)
try:
data = str(self.qmp.command('qom-get', path=path, property=prop))
data += '\n' # make values shell friendly
except:
return -EPERM
if offset > len(data):
return ''
return str(data[offset:][:length])
def readlink(self, path):
if not self.is_link(path):
return False
path, prop = path.rsplit('/', 1)
prefix = '/'.join(['..'] * (len(path.split('/')) - 1))
return prefix + str(self.qmp.command('qom-get', path=path,
property=prop))
def getattr(self, path):
if self.is_link(path):
value = posix.stat_result((0755 | stat.S_IFLNK,
self.get_ino(path),
0,
2,
1000,
1000,
4096,
0,
0,
0))
elif self.is_object(path):
value = posix.stat_result((0755 | stat.S_IFDIR,
self.get_ino(path),
0,
2,
1000,
1000,
4096,
0,
0,
0))
elif self.is_property(path):
value = posix.stat_result((0644 | stat.S_IFREG,
self.get_ino(path),
0,
1,
1000,
1000,
4096,
0,
0,
0))
else:
value = -ENOENT
return value
def readdir(self, path, offset):
yield fuse.Direntry('.')
yield fuse.Direntry('..')
for item in self.qmp.command('qom-list', path=path):
yield fuse.Direntry(str(item['name']))
if __name__ == '__main__':
import sys, os
fs = QOMFS(QEMUMonitorProtocol(os.environ['QMP_SOCKET']))
fs.main(sys.argv)
|
