mirror of https://github.com/perkeep/perkeep.git
98 lines
2.6 KiB
Python
98 lines
2.6 KiB
Python
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#!/usr/bin/env python
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from __future__ import with_statement
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from errno import EACCES
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from os.path import realpath
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from sys import argv, exit
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from threading import Lock
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import os
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from fuse import FUSE, FuseOSError, Operations, LoggingMixIn
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class Loopback(LoggingMixIn, Operations):
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def __init__(self, root):
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self.root = realpath(root)
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self.rwlock = Lock()
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def __call__(self, op, path, *args):
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return super(Loopback, self).__call__(op, self.root + path, *args)
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def access(self, path, mode):
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if not os.access(path, mode):
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raise FuseOSError(EACCES)
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chmod = os.chmod
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chown = os.chown
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def create(self, path, mode):
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return os.open(path, os.O_WRONLY | os.O_CREAT, mode)
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def flush(self, path, fh):
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return os.fsync(fh)
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def fsync(self, path, datasync, fh):
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return os.fsync(fh)
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def getattr(self, path, fh=None):
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st = os.lstat(path)
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return dict((key, getattr(st, key)) for key in ('st_atime', 'st_ctime',
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'st_gid', 'st_mode', 'st_mtime', 'st_nlink', 'st_size', 'st_uid'))
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getxattr = None
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def link(self, target, source):
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return os.link(source, target)
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listxattr = None
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mkdir = os.mkdir
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mknod = os.mknod
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open = os.open
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def read(self, path, size, offset, fh):
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with self.rwlock:
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os.lseek(fh, offset, 0)
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return os.read(fh, size)
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def readdir(self, path, fh):
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return ['.', '..'] + os.listdir(path)
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readlink = os.readlink
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def release(self, path, fh):
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return os.close(fh)
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def rename(self, old, new):
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return os.rename(old, self.root + new)
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rmdir = os.rmdir
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def statfs(self, path):
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stv = os.statvfs(path)
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return dict((key, getattr(stv, key)) for key in ('f_bavail', 'f_bfree',
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'f_blocks', 'f_bsize', 'f_favail', 'f_ffree', 'f_files', 'f_flag',
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'f_frsize', 'f_namemax'))
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def symlink(self, target, source):
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return os.symlink(source, target)
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def truncate(self, path, length, fh=None):
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with open(path, 'r+') as f:
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f.truncate(length)
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unlink = os.unlink
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utimens = os.utime
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def write(self, path, data, offset, fh):
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with self.rwlock:
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os.lseek(fh, offset, 0)
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return os.write(fh, data)
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if __name__ == "__main__":
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if len(argv) != 3:
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print 'usage: %s <root> <mountpoint>' % argv[0]
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exit(1)
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fuse = FUSE(Loopback(argv[1]), argv[2], foreground=True)
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