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