wmii

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fcall.py (2672B)

      1 from pyxp.messages import MessageBase, Message
      2 from pyxp.fields import *
      3 from types import Qid, Stat
      4 
      5 __all__ = 'Fcall',
      6 
      7 NO_FID = 1<<32 - 1
      8 MAX_WELEM = 16
      9 
     10 class FcallBase(MessageBase):
     11     idx = 99
     12     def __new__(cls, name, bases, attrs):
     13         new_cls = super(FcallBase, cls).__new__(cls, name, bases, attrs)
     14         new_cls.type = FcallBase.idx
     15         if new_cls.type > 99:
     16             new_cls.types[new_cls.type] = new_cls
     17         FcallBase.idx += 1
     18         return new_cls
     19 
     20 class Fcall(Message):
     21     __metaclass__ = FcallBase
     22     types = {}
     23 
     24     def response(self, *args, **kwargs):
     25         assert self.type % 2 == 0, "No respense type for response fcalls"
     26         kwargs['tag'] = self.tag
     27         return self.types[self.type + 1]()
     28 
     29     @classmethod
     30     def unmarshall(cls, data, offset=0):
     31         res = super(Fcall, cls).unmarshall(data, offset)
     32         if cls.type < 100:
     33             res = cls.types[res[1].type].unmarshall(data, offset)
     34         return res
     35 
     36     size = Size(4, 4)
     37     type = Int(1)
     38     tag  = Int(2)
     39 
     40 class Tversion(Fcall):
     41     msize   = Int(4)
     42     version = String()
     43 class Rversion(Fcall):
     44     msize   = Int(4)
     45     version = String()
     46 
     47 class Tauth(Fcall):
     48     afid  = Int(4)
     49     uname = String()
     50     aname = String()
     51 class Rauth(Fcall):
     52     aqid  = Qid.field()
     53 
     54 class Tattach(Fcall):
     55     fid   = Int(4)
     56     afid  = Int(4)
     57     uname = String()
     58     aname = String()
     59 class Rattach(Fcall):
     60     qid   = Qid.field()
     61 
     62 class Terror(Fcall):
     63     def __init__(self):
     64         raise Exception("Illegal 9P tag 'Terror' encountered")
     65 class Rerror(Fcall):
     66     ename = String()
     67 
     68 class Tflush(Fcall):
     69     oldtag = Int(2)
     70 class Rflush(Fcall):
     71     pass
     72 
     73 class Twalk(Fcall):
     74     fid    = Int(4)
     75     newfid = Int(4)
     76     wname  = Array(2, String())
     77 class Rwalk(Fcall):
     78     wqid   = Array(2, Qid.field())
     79 
     80 class Topen(Fcall):
     81     fid    = Int(4)
     82     mode   = Int(1)
     83 class Ropen(Fcall):
     84     qid    = Qid.field()
     85     iounit = Int(4)
     86 
     87 class Tcreate(Fcall):
     88     fid    = Int(4)
     89     name   = String()
     90     perm   = Int(4)
     91     mode   = Int(1)
     92 class Rcreate(Fcall):
     93     qid    = Qid.field()
     94     iounit = Int(4)
     95 
     96 class Tread(Fcall):
     97     fid    = Int(4)
     98     offset = Int(8)
     99     count  = Int(4)
    100 class Rread(Fcall):
    101     data   = Data(4)
    102 
    103 class Twrite(Fcall):
    104     fid    = Int(4)
    105     offset = Int(8)
    106     data   = Data(4)
    107 class Rwrite(Fcall):
    108     count  = Int(4)
    109 
    110 class Tclunk(Fcall):
    111     fid    = Int(4)
    112 class Rclunk(Fcall):
    113     pass
    114 
    115 class Tremove(Tclunk):
    116     pass
    117 class Rremove(Fcall):
    118     pass
    119 
    120 class Tstat(Tclunk):
    121     pass
    122 class Rstat(Fcall):
    123     sstat = Size(2)
    124     stat  = Stat.field()
    125 
    126 class Twstat(Rstat):
    127     pass
    128 class Rwstat(Fcall):
    129     pass
    130 
    131 # vim:se sts=4 sw=4 et: