include/sys/user.h

   1 /*****************************************************************************\
   2  *  Copyright (C) 2015 Cluster Inc.
   3  *  Produced at ClusterHQ Inc (cf, DISCLAIMER).
   4  *  Written by Richard Yao <richard.yao@clusterhq.com>.
   5  *
   6  *  This file is part of the SPL, Solaris Porting Layer.
   7  *  For details, see <http://zfsonlinux.org/>.
   8  *
   9  *  The SPL is free software; you can redistribute it and/or modify it
  10  *  under the terms of the GNU General Public License as published by the
  11  *  Free Software Foundation; either version 2 of the License, or (at your
  12  *  option) any later version.
  13  *
  14  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  15  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17  *  for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License along
  20  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  21 \*****************************************************************************/
  22
  23 #ifndef _SPL_USER_H
  24 #define _SPL_USER_H
  25
  26 /*
  27  * We have uf_info_t for areleasef(). We implement areleasef() using a global
  28  * linked list of all open file descriptors with the task structs referenced,
  29  * so accessing the correct descriptor from areleasef() only requires knowing
  30  * about the Linux task_struct. Since this is internal to our compatibility
  31  * layer, we make it an opaque type.
  32  *
  33  * XXX: If the descriptor changes under us, we would get an incorrect
  34  * reference.
  35  */
  36
  37 struct uf_info;
  38 typedef struct uf_info uf_info_t;
  39
  40 #define P_FINFO(x) ((uf_info_t *)x)
  41
  42 #endif /* SPL_USER_H */