mirror of https://github.com/perkeep/perkeep.git
123 lines
3.7 KiB
Python
Executable File
123 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python
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from collections import defaultdict
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from errno import ENOENT
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from stat import S_IFDIR, S_IFLNK, S_IFREG
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from sys import argv, exit
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from time import time
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from fuse import FUSE, FuseOSError, Operations, LoggingMixIn
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class Memory(LoggingMixIn, Operations):
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"""Example memory filesystem. Supports only one level of files."""
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def __init__(self):
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self.files = {}
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self.data = defaultdict(str)
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self.fd = 0
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now = time()
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self.files['/'] = dict(st_mode=(S_IFDIR | 0755), st_ctime=now,
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st_mtime=now, st_atime=now, st_nlink=2)
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def chmod(self, path, mode):
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self.files[path]['st_mode'] &= 0770000
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self.files[path]['st_mode'] |= mode
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return 0
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def chown(self, path, uid, gid):
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self.files[path]['st_uid'] = uid
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self.files[path]['st_gid'] = gid
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def create(self, path, mode):
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self.files[path] = dict(st_mode=(S_IFREG | mode), st_nlink=1,
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st_size=0, st_ctime=time(), st_mtime=time(), st_atime=time())
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self.fd += 1
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return self.fd
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def getattr(self, path, fh=None):
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if path not in self.files:
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raise FuseOSError(ENOENT)
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st = self.files[path]
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return st
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def getxattr(self, path, name, position=0):
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attrs = self.files[path].get('attrs', {})
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try:
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return attrs[name]
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except KeyError:
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return '' # Should return ENOATTR
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def listxattr(self, path):
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attrs = self.files[path].get('attrs', {})
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return attrs.keys()
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def mkdir(self, path, mode):
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self.files[path] = dict(st_mode=(S_IFDIR | mode), st_nlink=2,
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st_size=0, st_ctime=time(), st_mtime=time(), st_atime=time())
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self.files['/']['st_nlink'] += 1
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def open(self, path, flags):
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self.fd += 1
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return self.fd
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def read(self, path, size, offset, fh):
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return self.data[path][offset:offset + size]
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def readdir(self, path, fh):
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return ['.', '..'] + [x[1:] for x in self.files if x != '/']
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def readlink(self, path):
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return self.data[path]
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def removexattr(self, path, name):
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attrs = self.files[path].get('attrs', {})
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try:
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del attrs[name]
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except KeyError:
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pass # Should return ENOATTR
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def rename(self, old, new):
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self.files[new] = self.files.pop(old)
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def rmdir(self, path):
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self.files.pop(path)
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self.files['/']['st_nlink'] -= 1
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def setxattr(self, path, name, value, options, position=0):
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# Ignore options
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attrs = self.files[path].setdefault('attrs', {})
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attrs[name] = value
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def statfs(self, path):
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return dict(f_bsize=512, f_blocks=4096, f_bavail=2048)
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def symlink(self, target, source):
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self.files[target] = dict(st_mode=(S_IFLNK | 0777), st_nlink=1,
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st_size=len(source))
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self.data[target] = source
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def truncate(self, path, length, fh=None):
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self.data[path] = self.data[path][:length]
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self.files[path]['st_size'] = length
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def unlink(self, path):
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self.files.pop(path)
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def utimens(self, path, times=None):
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now = time()
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atime, mtime = times if times else (now, now)
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self.files[path]['st_atime'] = atime
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self.files[path]['st_mtime'] = mtime
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def write(self, path, data, offset, fh):
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self.data[path] = self.data[path][:offset] + data
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self.files[path]['st_size'] = len(self.data[path])
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return len(data)
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if __name__ == "__main__":
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if len(argv) != 2:
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print 'usage: %s <mountpoint>' % argv[0]
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exit(1)
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fuse = FUSE(Memory(), argv[1], foreground=True) |