1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
# NFS RPC client -- RFC 1094
# XXX This is not yet complete.
# XXX Only GETATTR, SETTTR, LOOKUP and READDIR are supported.
# (See mountclient.py for some hints on how to write RPC clients in
# Python in general)
import rpc
from rpc import UDPClient, TCPClient
from mountclient import FHSIZE, MountPacker, MountUnpacker
NFS_PROGRAM = 100003
NFS_VERSION = 2
# enum stat
NFS_OK = 0
# (...many error values...)
# enum ftype
NFNON = 0
NFREG = 1
NFDIR = 2
NFBLK = 3
NFCHR = 4
NFLNK = 5
class NFSPacker(MountPacker):
def pack_sattrargs(self, sa):
file, attributes = sa
self.pack_fhandle(file)
self.pack_sattr(attributes)
def pack_sattr(self, sa):
mode, uid, gid, size, atime, mtime = sa
self.pack_uint(mode)
self.pack_uint(uid)
self.pack_uint(gid)
self.pack_uint(size)
self.pack_timeval(atime)
self.pack_timeval(mtime)
def pack_diropargs(self, da):
dir, name = da
self.pack_fhandle(dir)
self.pack_string(name)
def pack_readdirargs(self, ra):
dir, cookie, count = ra
self.pack_fhandle(dir)
self.pack_uint(cookie)
self.pack_uint(count)
def pack_timeval(self, tv):
secs, usecs = tv
self.pack_uint(secs)
self.pack_uint(usecs)
class NFSUnpacker(MountUnpacker):
def unpack_readdirres(self):
status = self.unpack_enum()
if status == NFS_OK:
entries = self.unpack_list(self.unpack_entry)
eof = self.unpack_bool()
rest = (entries, eof)
else:
rest = None
return (status, rest)
def unpack_entry(self):
fileid = self.unpack_uint()
name = self.unpack_string()
cookie = self.unpack_uint()
return (fileid, name, cookie)
def unpack_diropres(self):
status = self.unpack_enum()
if status == NFS_OK:
fh = self.unpack_fhandle()
fa = self.unpack_fattr()
rest = (fh, fa)
else:
rest = None
return (status, rest)
def unpack_attrstat(self):
status = self.unpack_enum()
if status == NFS_OK:
attributes = self.unpack_fattr()
else:
attributes = None
return status, attributes
def unpack_fattr(self):
type = self.unpack_enum()
mode = self.unpack_uint()
nlink = self.unpack_uint()
uid = self.unpack_uint()
gid = self.unpack_uint()
size = self.unpack_uint()
blocksize = self.unpack_uint()
rdev = self.unpack_uint()
blocks = self.unpack_uint()
fsid = self.unpack_uint()
fileid = self.unpack_uint()
atime = self.unpack_timeval()
mtime = self.unpack_timeval()
ctime = self.unpack_timeval()
return (type, mode, nlink, uid, gid, size, blocksize, \
rdev, blocks, fsid, fileid, atime, mtime, ctime)
def unpack_timeval(self):
secs = self.unpack_uint()
usecs = self.unpack_uint()
return (secs, usecs)
class NFSClient(UDPClient):
def __init__(self, host):
UDPClient.__init__(self, host, NFS_PROGRAM, NFS_VERSION)
def addpackers(self):
self.packer = NFSPacker()
self.unpacker = NFSUnpacker('')
def mkcred(self):
if self.cred == None:
self.cred = rpc.AUTH_UNIX, rpc.make_auth_unix_default()
return self.cred
def Getattr(self, fh):
return self.make_call(1, fh, \
self.packer.pack_fhandle, \
self.unpacker.unpack_attrstat)
def Setattr(self, sa):
return self.make_call(2, sa, \
self.packer.pack_sattrargs, \
self.unpacker.unpack_attrstat)
# Root() is obsolete
def Lookup(self, da):
return self.make_call(4, da, \
self.packer.pack_diropargs, \
self.unpacker.unpack_diropres)
# ...
def Readdir(self, ra):
return self.make_call(16, ra, \
self.packer.pack_readdirargs, \
self.unpacker.unpack_readdirres)
# Shorthand to get the entire contents of a directory
def Listdir(self, dir):
list = []
ra = (dir, 0, 2000)
while 1:
(status, rest) = self.Readdir(ra)
if status <> NFS_OK:
break
entries, eof = rest
last_cookie = None
for fileid, name, cookie in entries:
list.append((fileid, name))
last_cookie = cookie
if eof or last_cookie == None:
break
ra = (ra[0], last_cookie, ra[2])
return list
def test():
import sys
if sys.argv[1:]: host = sys.argv[1]
else: host = ''
if sys.argv[2:]: filesys = sys.argv[2]
else: filesys = None
from mountclient import UDPMountClient, TCPMountClient
mcl = TCPMountClient(host)
if filesys == None:
list = mcl.Export()
for item in list:
print item
return
sf = mcl.Mnt(filesys)
print sf
fh = sf[1]
if fh:
ncl = NFSClient(host)
as = ncl.Getattr(fh)
print as
list = ncl.Listdir(fh)
for item in list: print item
mcl.Umnt(filesys)
|
