Added mount helpers.

mount.py

@@ -0,0 +1,59 @@
+from ctypes import Structure, \
+    c_uint32, \
+    c_uint64, \
+    c_int64, \
+    c_int, \
+    c_char, \
+    CDLL, \
+    POINTER, \
+    ARRAY, \
+    byref
+from ctypes.util import find_library
+
+
+MFSNAMELEN = 16
+MNAMELEN = 1024
+
+
+class statfs(Structure):
+    pass
+
+
+statfs._fields_ = [
+    ('f_version', c_uint32),
+    ('f_type', c_uint32),
+    ('f_flags', c_uint64),
+    ('f_bsize', c_uint64),
+    ('f_iosize', c_uint64),
+    ('f_blocks', c_uint64),
+    ('f_bfree', c_uint64),
+    ('f_bavail', c_int64),
+    ('f_files', c_uint64),
+    ('f_ffree', c_int64),
+    ('f_syncwrites', c_uint64),
+    ('f_asyncwrites', c_uint64),
+    ('f_syncreads', c_uint64),
+    ('f_asyncreads', c_uint64),
+    ('f_spare', ARRAY(c_uint64, 10)),
+    ('f_namemax', c_uint32),
+    ('f_owner', c_uint32),
+    ('f_fsid', ARRAY(c_uint32, 2)),
+    ('f_charspare', ARRAY(c_char, 80)),
+    ('f_fstypename', ARRAY(c_char, MFSNAMELEN)),
+    ('f_mntfromname', ARRAY(c_char, MNAMELEN)),
+    ('f_mntonname', ARRAY(c_char, MNAMELEN))
+]
+
+libc = CDLL(find_library('c'))
+
+def getdict(struct):
+    return dict((field, getattr(struct, field)) for field, _ in struct._fields_)
+
+_getmntinfo = libc.getmntinfo
+_getmntinfo.argtypes = [ POINTER(POINTER(statfs)), c_int ]
+
+def getmntinfo():
+    p = POINTER(statfs)()
+    n = _getmntinfo(byref(p), c_int(1))
+    res = [ getdict(p[i]) for i in range(n) ]
+    return res