| 1 | # NFS RPC client -- RFC 1094
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| 2 |
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| 3 | # XXX This is not yet complete.
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| 4 | # XXX Only GETATTR, SETTTR, LOOKUP and READDIR are supported.
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| 5 |
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| 6 | # (See mountclient.py for some hints on how to write RPC clients in
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| 7 | # Python in general)
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| 8 |
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| 9 | import rpc
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| 10 | from rpc import UDPClient, TCPClient
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| 11 | from mountclient import FHSIZE, MountPacker, MountUnpacker
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| 12 |
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| 13 | NFS_PROGRAM = 100003
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| 14 | NFS_VERSION = 2
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| 15 |
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| 16 | # enum stat
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| 17 | NFS_OK = 0
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| 18 | # (...many error values...)
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| 19 |
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| 20 | # enum ftype
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| 21 | NFNON = 0
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| 22 | NFREG = 1
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| 23 | NFDIR = 2
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| 24 | NFBLK = 3
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| 25 | NFCHR = 4
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| 26 | NFLNK = 5
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| 27 |
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| 28 |
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| 29 | class NFSPacker(MountPacker):
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| 30 |
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| 31 | def pack_sattrargs(self, sa):
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| 32 | file, attributes = sa
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| 33 | self.pack_fhandle(file)
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| 34 | self.pack_sattr(attributes)
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| 35 |
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| 36 | def pack_sattr(self, sa):
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| 37 | mode, uid, gid, size, atime, mtime = sa
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| 38 | self.pack_uint(mode)
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| 39 | self.pack_uint(uid)
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| 40 | self.pack_uint(gid)
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| 41 | self.pack_uint(size)
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| 42 | self.pack_timeval(atime)
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| 43 | self.pack_timeval(mtime)
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| 44 |
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| 45 | def pack_diropargs(self, da):
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| 46 | dir, name = da
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| 47 | self.pack_fhandle(dir)
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| 48 | self.pack_string(name)
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| 49 |
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| 50 | def pack_readdirargs(self, ra):
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| 51 | dir, cookie, count = ra
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| 52 | self.pack_fhandle(dir)
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| 53 | self.pack_uint(cookie)
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| 54 | self.pack_uint(count)
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| 55 |
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| 56 | def pack_timeval(self, tv):
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| 57 | secs, usecs = tv
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| 58 | self.pack_uint(secs)
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| 59 | self.pack_uint(usecs)
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| 60 |
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| 61 |
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| 62 | class NFSUnpacker(MountUnpacker):
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| 63 |
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| 64 | def unpack_readdirres(self):
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| 65 | status = self.unpack_enum()
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| 66 | if status == NFS_OK:
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| 67 | entries = self.unpack_list(self.unpack_entry)
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| 68 | eof = self.unpack_bool()
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| 69 | rest = (entries, eof)
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| 70 | else:
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| 71 | rest = None
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| 72 | return (status, rest)
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| 73 |
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| 74 | def unpack_entry(self):
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| 75 | fileid = self.unpack_uint()
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| 76 | name = self.unpack_string()
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| 77 | cookie = self.unpack_uint()
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| 78 | return (fileid, name, cookie)
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| 79 |
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| 80 | def unpack_diropres(self):
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| 81 | status = self.unpack_enum()
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| 82 | if status == NFS_OK:
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| 83 | fh = self.unpack_fhandle()
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| 84 | fa = self.unpack_fattr()
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| 85 | rest = (fh, fa)
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| 86 | else:
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| 87 | rest = None
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| 88 | return (status, rest)
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| 89 |
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| 90 | def unpack_attrstat(self):
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| 91 | status = self.unpack_enum()
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| 92 | if status == NFS_OK:
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| 93 | attributes = self.unpack_fattr()
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| 94 | else:
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