3 # A FUSE filesystem implementation to provide a file interface for
4 # vsys_publickeys VSYS script. To be used by OMF Resource Controller.
6 # Usage: ./keys_fs.py /keys
11 # Sliver has to have following ccapabilities set.
23 fuse.fuse_python_api = (0, 2)
26 keys_file = os.path.join(keys_dir, "all")
30 return "reading PLC users' public keys\n"
32 class MyStat(fuse.Stat):
47 def __init__(self, *args, **kw):
48 Fuse.__init__(self, *args, **kw)
50 def getattr(self, path):
53 st.st_mode = stat.S_IFDIR | 0755
56 st.st_mode = stat.S_IFREG | 0444
58 st.st_size = len(read_keys())
61 def readdir(self, path, offset):
62 for r in '.', '..', os.path.basename(keys_file):
63 yield fuse.Direntry(r)
65 def open(self, path, flags):
66 accmode = os.O_RDONLY | os.O_WRONLY | os.O_RDWR
67 if (flags & accmode) != os.O_RDONLY:
70 def read (self, path, size, offset):
75 if offset + size > slen:
77 buf = keys[offset:offset+size]
84 if __name__ == '__main__':
87 fs.parse(values=fs, errex=1)
89 if fs.fuse_args.mount_expected():
92 sys.stderr.write("can't enter root of underlying filesystem\n")