Added Python (Thanks to Beholder) - it fails to build properly using my build system,

so there's a precompiled binary included, with a hack in Android.mk to make it work on NDK r4b

project/jni/python/src/Demo/rpc/mountclient.py

@@ -0,0 +1,202 @@
+# Mount RPC client -- RFC 1094 (NFS), Appendix A
+
+# This module demonstrates how to write your own RPC client in Python.
+# When this example was written, there was no RPC compiler for
+# Python. Without such a compiler, you must first create classes
+# derived from Packer and Unpacker to handle the data types for the
+# server you want to interface to.  You then write the client class.
+# If you want to support both the TCP and the UDP version of a
+# protocol, use multiple inheritance as shown below.
+
+
+import rpc
+from rpc import Packer, Unpacker, TCPClient, UDPClient
+
+
+# Program number and version for the mount protocol
+MOUNTPROG = 100005
+MOUNTVERS = 1
+
+# Size of the 'fhandle' opaque structure
+FHSIZE = 32
+
+
+# Packer derived class for Mount protocol clients.
+# The only thing we need to pack beyond basic types is an 'fhandle'
+
+class MountPacker(Packer):
+
+    def pack_fhandle(self, fhandle):
+        self.pack_fopaque(FHSIZE, fhandle)
+
+
+# Unpacker derived class for Mount protocol clients.
+# The important types we need to unpack are fhandle, fhstatus,
+# mountlist and exportlist; mountstruct, exportstruct and groups are
+# used to unpack components of mountlist and exportlist and the
+# corresponding functions are passed as function argument to the
+# generic unpack_list function.
+
+class MountUnpacker(Unpacker):
+
+    def unpack_fhandle(self):
+        return self.unpack_fopaque(FHSIZE)
+
+    def unpack_fhstatus(self):
+        status = self.unpack_uint()
+        if status == 0:
+            fh = self.unpack_fhandle()
+        else:
+            fh = None
+        return status, fh
+
+    def unpack_mountlist(self):
+        return self.unpack_list(self.unpack_mountstruct)
+
+    def unpack_mountstruct(self):
+        hostname = self.unpack_string()
+        directory = self.unpack_string()
+        return (hostname, directory)
+
+    def unpack_exportlist(self):
+        return self.unpack_list(self.unpack_exportstruct)
+
+    def unpack_exportstruct(self):
+        filesys = self.unpack_string()
+        groups = self.unpack_groups()
+        return (filesys, groups)
+
+    def unpack_groups(self):
+        return self.unpack_list(self.unpack_string)
+
+
+# These are the procedures specific to the Mount client class.
+# Think of this as a derived class of either TCPClient or UDPClient.
+
+class PartialMountClient:
+
+    # This method is called by Client.__init__ to initialize
+    # self.packer and self.unpacker
+    def addpackers(self):
+        self.packer = MountPacker()
+        self.unpacker = MountUnpacker('')
+
+    # This method is called by Client.__init__ to bind the socket
+    # to a particular network interface and port.  We use the
+    # default network interface, but if we're running as root,
+    # we want to bind to a reserved port
+    def bindsocket(self):
+        import os
+        try:
+            uid = os.getuid()
+        except AttributeError:
+            uid = 1
+        if uid == 0:
+            port = rpc.bindresvport(self.sock, '')
+            # 'port' is not used
+        else:
+            self.sock.bind(('', 0))
+
+    # This function is called to cough up a suitable
+    # authentication object for a call to procedure 'proc'.
+    def mkcred(self):
+        if self.cred is None:
+            self.cred = rpc.AUTH_UNIX, rpc.make_auth_unix_default()
+        return self.cred
+
+    # The methods Mnt, Dump etc. each implement one Remote
+    # Procedure Call.  This is done by calling self.make_call()
+    # with as arguments:
+    #
+    # - the procedure number
+    # - the arguments (or None)
+    # - the "packer" function for the arguments (or None)
+    # - the "unpacker" function for the return value (or None)
+    #
+    # The packer and unpacker function, if not None, *must* be
+    # methods of self.packer and self.unpacker, respectively.
+    # A value of None means that there are no arguments or is no
+    # return value, respectively.
+    #
+    # The return value from make_call() is the return value from
+    # the remote procedure call, as unpacked by the "unpacker"
+    # function, or None if the unpacker function is None.
+    #
+    # (Even if you expect a result of None, you should still
+    # return the return value from make_call(), since this may be
+    # needed by a broadcasting version of the class.)
+    #
+    # If the call fails, make_call() raises an exception
+    # (this includes time-outs and invalid results).
+    #
+    # Note that (at least with the UDP protocol) there is no
+    # guarantee that a call is executed at most once.  When you do
+    # get a reply, you know it has been executed at least once;
+    # when you don't get a reply, you know nothing.
+
+    def Mnt(self, directory):
+        return self.make_call(1, directory, \
+                self.packer.pack_string, \
+                self.unpacker.unpack_fhstatus)
+
+    def Dump(self):
+        return self.make_call(2, None, \
+                None, self.unpacker.unpack_mountlist)
+
+    def Umnt(self, directory):
+        return self.make_call(3, directory, \
+                self.packer.pack_string, None)
+
+    def Umntall(self):
+        return self.make_call(4, None, None, None)
+
+    def Export(self):
+        return self.make_call(5, None, \
+                None, self.unpacker.unpack_exportlist)
+
+
+# We turn the partial Mount client into a full one for either protocol
+# by use of multiple inheritance.  (In general, when class C has base
+# classes B1...Bn, if x is an instance of class C, methods of x are
+# searched first in C, then in B1, then in B2, ..., finally in Bn.)
+
+class TCPMountClient(PartialMountClient, TCPClient):
+
+    def __init__(self, host):
+        TCPClient.__init__(self, host, MOUNTPROG, MOUNTVERS)
+
+
+class UDPMountClient(PartialMountClient, UDPClient):
+
+    def __init__(self, host):
+        UDPClient.__init__(self, host, MOUNTPROG, MOUNTVERS)
+
+
+# A little test program for the Mount client.  This takes a host as
+# command line argument (default the local machine), prints its export
+# list, and attempts to mount and unmount each exported files system.
+# An optional first argument of -t or -u specifies the protocol to use
+# (TCP or UDP), default is UDP.
+
+def test():
+    import sys
+    if sys.argv[1:] and sys.argv[1] == '-t':
+        C = TCPMountClient
+        del sys.argv[1]
+    elif sys.argv[1:] and sys.argv[1] == '-u':
+        C = UDPMountClient
+        del sys.argv[1]
+    else:
+        C = UDPMountClient
+    if sys.argv[1:]: host = sys.argv[1]
+    else: host = ''
+    mcl = C(host)
+    list = mcl.Export()
+    for item in list:
+        print item
+        try:
+            mcl.Mnt(item[0])
+        except:
+            print 'Sorry'
+            continue
+        mcl.Umnt(item[0])