FreeBSD/Linux Kernel Cross Reference
sys/fs/fuse/fuse_param.h

     /*
      * Copyright (c) 2007-2009 Google Inc. and Amit Singh
      * All rights reserved.
      * 
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions are
      * met:
      * 
      * * Redistributions of source code must retain the above copyright
     *   notice, this list of conditions and the following disclaimer.
     * * Redistributions in binary form must reproduce the above
     *   copyright notice, this list of conditions and the following disclaimer
     *   in the documentation and/or other materials provided with the
     *   distribution.
     * * Neither the name of Google Inc. nor the names of its
     *   contributors may be used to endorse or promote products derived from
     *   this software without specific prior written permission.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: releng/10.1/sys/fs/fuse/fuse_param.h 241519 2012-10-13 23:54:26Z attilio $ 
     */
    
    #ifndef _FUSE_PARAM_H_
    #define _FUSE_PARAM_H_
    
    /*
     * This is the prefix ("fuse" by default) of the name of a FUSE device node
     * in devfs. The suffix is the device number. "/dev/fuse0" is the first FUSE
     * device by default. If you change the prefix from the default to something
     * else, the user-space FUSE library will need to know about it too.
     */
    #define FUSE_DEVICE_BASENAME               "fuse"
    
    /*
     * This is the number of /dev/fuse<n> nodes we will create. <n> goes from
     * 0 to (FUSE_NDEVICES - 1).
     */
    #define FUSE_NDEVICES                      16
    
    /*
     * This is the default block size of the virtual storage devices that are
     * implicitly implemented by the FUSE kernel extension. This can be changed
     * on a per-mount basis (there's one such virtual device for each mount).
     */
    #define FUSE_DEFAULT_BLOCKSIZE             4096
    
    /*
     * This is default I/O size used while accessing the virtual storage devices.
     * This can be changed on a per-mount basis.
     */
    #define FUSE_DEFAULT_IOSIZE                4096
    
    #ifdef KERNEL
    
    /*
     * This is the soft upper limit on the number of "request tickets" FUSE's
     * user-kernel IPC layer can have for a given mount. This can be modified
     * through the fuse.* sysctl interface.
     */
    #define FUSE_DEFAULT_MAX_FREE_TICKETS      1024
    
    #define FUSE_DEFAULT_IOV_PERMANENT_BUFSIZE (1L << 19)
    #define FUSE_DEFAULT_IOV_CREDIT            16
    
    #endif
    
    #define FUSE_LINK_MAX                      LINK_MAX
    
    #endif /* _FUSE_PARAM_H_ */

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