| Anthony Liguori | 5ade767 | 2012-04-18 17:37:04 -0500 | [diff] [blame] | 1 | #!/usr/bin/python |
| 2 | ## |
| 3 | # QEMU Object Model test tools |
| 4 | # |
| 5 | # Copyright IBM, Corp. 2012 |
| 6 | # |
| 7 | # Authors: |
| 8 | # Anthony Liguori <aliguori@us.ibm.com> |
| 9 | # |
| 10 | # This work is licensed under the terms of the GNU GPL, version 2 or later. See |
| 11 | # the COPYING file in the top-level directory. |
| 12 | ## |
| 13 | |
| 14 | import fuse, stat |
| 15 | from fuse import Fuse |
| 16 | import os, posix |
| 17 | from errno import * |
| 18 | from qmp import QEMUMonitorProtocol |
| 19 | |
| 20 | fuse.fuse_python_api = (0, 2) |
| 21 | |
| 22 | class QOMFS(Fuse): |
| 23 | def __init__(self, qmp, *args, **kwds): |
| 24 | Fuse.__init__(self, *args, **kwds) |
| 25 | self.qmp = qmp |
| 26 | self.qmp.connect() |
| 27 | self.ino_map = {} |
| 28 | self.ino_count = 1 |
| 29 | |
| 30 | def get_ino(self, path): |
| 31 | if self.ino_map.has_key(path): |
| 32 | return self.ino_map[path] |
| 33 | self.ino_map[path] = self.ino_count |
| 34 | self.ino_count += 1 |
| 35 | return self.ino_map[path] |
| 36 | |
| 37 | def is_object(self, path): |
| 38 | try: |
| 39 | items = self.qmp.command('qom-list', path=path) |
| 40 | return True |
| 41 | except: |
| 42 | return False |
| 43 | |
| 44 | def is_property(self, path): |
| 45 | try: |
| 46 | path, prop = path.rsplit('/', 1) |
| 47 | for item in self.qmp.command('qom-list', path=path): |
| 48 | if item['name'] == prop: |
| 49 | return True |
| 50 | return False |
| 51 | except: |
| 52 | return False |
| 53 | |
| 54 | def is_link(self, path): |
| 55 | try: |
| 56 | path, prop = path.rsplit('/', 1) |
| 57 | for item in self.qmp.command('qom-list', path=path): |
| 58 | if item['name'] == prop: |
| 59 | if item['type'].startswith('link<'): |
| 60 | return True |
| 61 | return False |
| 62 | return False |
| 63 | except: |
| 64 | return False |
| 65 | |
| 66 | def read(self, path, length, offset): |
| 67 | if not self.is_property(path): |
| 68 | return -ENOENT |
| 69 | |
| 70 | path, prop = path.rsplit('/', 1) |
| 71 | try: |
| 72 | data = str(self.qmp.command('qom-get', path=path, property=prop)) |
| 73 | data += '\n' # make values shell friendly |
| 74 | except: |
| 75 | return -EPERM |
| 76 | |
| 77 | if offset > len(data): |
| 78 | return '' |
| 79 | |
| 80 | return str(data[offset:][:length]) |
| 81 | |
| 82 | def readlink(self, path): |
| 83 | if not self.is_link(path): |
| 84 | return False |
| 85 | path, prop = path.rsplit('/', 1) |
| 86 | prefix = '/'.join(['..'] * (len(path.split('/')) - 1)) |
| 87 | return prefix + str(self.qmp.command('qom-get', path=path, |
| 88 | property=prop)) |
| 89 | |
| 90 | def getattr(self, path): |
| 91 | if self.is_link(path): |
| 92 | value = posix.stat_result((0755 | stat.S_IFLNK, |
| 93 | self.get_ino(path), |
| 94 | 0, |
| 95 | 2, |
| 96 | 1000, |
| 97 | 1000, |
| 98 | 4096, |
| 99 | 0, |
| 100 | 0, |
| 101 | 0)) |
| 102 | elif self.is_object(path): |
| 103 | value = posix.stat_result((0755 | stat.S_IFDIR, |
| 104 | self.get_ino(path), |
| 105 | 0, |
| 106 | 2, |
| 107 | 1000, |
| 108 | 1000, |
| 109 | 4096, |
| 110 | 0, |
| 111 | 0, |
| 112 | 0)) |
| 113 | elif self.is_property(path): |
| 114 | value = posix.stat_result((0644 | stat.S_IFREG, |
| 115 | self.get_ino(path), |
| 116 | 0, |
| 117 | 1, |
| 118 | 1000, |
| 119 | 1000, |
| 120 | 4096, |
| 121 | 0, |
| 122 | 0, |
| 123 | 0)) |
| 124 | else: |
| 125 | value = -ENOENT |
| 126 | return value |
| 127 | |
| 128 | def readdir(self, path, offset): |
| 129 | yield fuse.Direntry('.') |
| 130 | yield fuse.Direntry('..') |
| 131 | for item in self.qmp.command('qom-list', path=path): |
| 132 | yield fuse.Direntry(str(item['name'])) |
| 133 | |
| 134 | if __name__ == '__main__': |
| 135 | import sys, os |
| 136 | |
| 137 | fs = QOMFS(QEMUMonitorProtocol(os.environ['QMP_SOCKET'])) |
| 138 | fs.main(sys.argv) |
