root / QMP / qom-fuse @ 992aeb8e
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#!/usr/bin/python |
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## |
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# QEMU Object Model test tools |
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# |
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# Copyright IBM, Corp. 2012 |
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# |
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# Authors: |
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# Anthony Liguori <aliguori@us.ibm.com> |
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# |
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# This work is licensed under the terms of the GNU GPL, version 2 or later. See |
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# the COPYING file in the top-level directory. |
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## |
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|
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import fuse, stat |
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from fuse import Fuse |
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import os, posix |
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from errno import * |
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from qmp import QEMUMonitorProtocol |
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|
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fuse.fuse_python_api = (0, 2) |
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|
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class QOMFS(Fuse): |
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def __init__(self, qmp, *args, **kwds): |
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Fuse.__init__(self, *args, **kwds) |
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self.qmp = qmp |
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self.qmp.connect() |
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self.ino_map = {}
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self.ino_count = 1 |
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|
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def get_ino(self, path): |
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if self.ino_map.has_key(path): |
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return self.ino_map[path] |
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self.ino_map[path] = self.ino_count |
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self.ino_count += 1 |
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return self.ino_map[path] |
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|
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def is_object(self, path): |
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try: |
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items = self.qmp.command('qom-list', path=path)
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return True |
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except: |
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return False |
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|
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def is_property(self, path): |
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try: |
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path, prop = path.rsplit('/', 1)
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for item in self.qmp.command('qom-list', path=path):
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if item['name'] == prop: |
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return True |
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return False |
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except: |
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return False |
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|
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def is_link(self, path): |
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try: |
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path, prop = path.rsplit('/', 1)
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for item in self.qmp.command('qom-list', path=path):
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if item['name'] == prop: |
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if item['type'].startswith('link<'):
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return True |
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return False |
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return False |
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except: |
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return False |
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|
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def read(self, path, length, offset): |
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if not self.is_property(path): |
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return -ENOENT |
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|
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path, prop = path.rsplit('/', 1)
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try: |
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data = str(self.qmp.command('qom-get', path=path, property=prop))
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data += '\n' # make values shell friendly |
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except: |
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return -EPERM |
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|
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if offset > len(data): |
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return '' |
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|
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return str(data[offset:][:length]) |
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|
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def readlink(self, path): |
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if not self.is_link(path): |
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return False |
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path, prop = path.rsplit('/', 1)
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prefix = '/'.join(['..'] * (len(path.split('/')) - 1))
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return prefix + str(self.qmp.command('qom-get', path=path,
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property=prop)) |
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|
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def getattr(self, path): |
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if self.is_link(path): |
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value = posix.stat_result((0755 | stat.S_IFLNK, |
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self.get_ino(path), |
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0, |
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2, |
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1000, |
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1000, |
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4096, |
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0, |
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0, |
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0)) |
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elif self.is_object(path): |
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value = posix.stat_result((0755 | stat.S_IFDIR, |
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self.get_ino(path), |
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0, |
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2, |
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1000, |
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1000, |
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4096, |
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0, |
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0, |
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0)) |
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elif self.is_property(path): |
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value = posix.stat_result((0644 | stat.S_IFREG, |
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self.get_ino(path), |
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0, |
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1, |
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1000, |
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1000, |
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4096, |
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0, |
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0, |
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0)) |
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else: |
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value = -ENOENT |
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return value |
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|
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def readdir(self, path, offset): |
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yield fuse.Direntry('.')
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yield fuse.Direntry('..')
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for item in self.qmp.command('qom-list', path=path):
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yield fuse.Direntry(str(item['name'])) |
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|
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if __name__ == '__main__': |
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import sys, os |
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|
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fs = QOMFS(QEMUMonitorProtocol(os.environ['QMP_SOCKET'])) |
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fs.main(sys.argv) |