ops.py 文件源码

def symlink(self, parent_inode, name, target, ctx):
        assert self._initialized
        assert_or_errno(self.access(parent_inode, WX_OK, ctx),
                        EPERM, 'no wx perm to parent inode')
        n = self._lookup(parent_inode, name, ctx, noref=True)
        assert_or_errno(not n, EEXIST, 'link target exists')
        try:
            self.unlink(parent_inode, name, ctx)
        except llfuse.FUSEError as e:
            if e.errno != ENOENT:
                raise
        fd, a = self.create(parent_inode, name, stat.S_IFLNK | 0o777,
                            os.O_WRONLY, ctx)
        try:
            self.write(fd, 0, target)
            return a
        finally:
            self.release(fd)