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#!/usr/bin/env python
# Copyright (C) 2006 Andrew Straw <strawman@astraw.com>
#
# This program can be distributed under the terms of the GNU LGPL.
# See the file COPYING.
#
import os, stat, errno
# pull in some spaghetti to make this stuff work without fuse-py being installed
try:
import _find_fuse_parts
except ImportError:
pass
import fuse
from fuse import Fuse
if not hasattr(fuse, '__version__'):
raise RuntimeError, \
"your fuse-py doesn't know of fuse.__version__, probably it's too old."
fuse.fuse_python_api = (0, 2)
hello_path = '/hello'
hello_str = 'Hello World!\n'
class MyStat(fuse.Stat):
def __init__(self):
self.st_mode = 0
self.st_ino = 0
self.st_dev = 0
self.st_nlink = 0
self.st_uid = 0
self.st_gid = 0
self.st_size = 0
self.st_atime = 0
self.st_mtime = 0
self.st_ctime = 0
class HelloFS(Fuse):
def getattr(self, path):
st = MyStat()
if path == '/':
st.st_mode = stat.S_IFDIR | 0755
st.st_nlink = 2
elif path == hello_path:
st.st_mode = stat.S_IFREG | 0444
st.st_nlink = 1
st.st_size = len(hello_str)
else:
return -errno.ENOENT
return st
def readdir(self, path, offset):
for r in '.', '..', hello_path[1:]:
yield fuse.Direntry(r)
def open(self, path, flags):
if path != hello_path:
return -errno.ENOENT
accmode = os.O_RDONLY | os.O_WRONLY | os.O_RDWR
if (flags & accmode) != os.O_RDONLY:
return -errno.EACCES
def read(self, path, size, offset):
if path != hello_path:
return -errno.ENOENT
slen = len(hello_str)
if offset < slen:
if offset + size > slen:
size = slen - offset
buf = hello_str[offset:offset+size]
else:
buf = ''
return buf
def main():
usage="""
Userspace hello example
""" + Fuse.fusage
server = HelloFS(version="%prog " + fuse.__version__,
usage=usage,
dash_s_do='setsingle')
server.parse(errex=1)
server.main()
if __name__ == '__main__':
main()
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