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/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/
#ifndef _SPL_CRED_H
#define _SPL_CRED_H
#include <linux/module.h>
#include <sys/types.h>
#include <sys/vfs.h>
typedef struct cred cred_t;
#define kcred ((cred_t *)(init_task.cred))
#define CRED() ((cred_t *)current_cred())
#ifdef HAVE_KUIDGID_T
/*
* Linux 3.8+ uses typedefs to redefine uid_t and gid_t. We have to rename the
* typedefs to recover the original types. We then can use them provided that
* we are careful about translating from k{g,u}id_t to the original versions
* and vice versa.
*/
#define uid_t xuid_t
#define gid_t xgid_t
#include <linux/uidgid.h>
#undef uid_t
#undef gid_t
#define KUID_TO_SUID(x) (__kuid_val(x))
#define KGID_TO_SGID(x) (__kgid_val(x))
#define SUID_TO_KUID(x) (KUIDT_INIT(x))
#define SGID_TO_KGID(x) (KGIDT_INIT(x))
#define KGIDP_TO_SGIDP(x) (&(x)->val)
#else /* HAVE_KUIDGID_T */
#define KUID_TO_SUID(x) (x)
#define KGID_TO_SGID(x) (x)
#define SUID_TO_KUID(x) (x)
#define SGID_TO_KGID(x) (x)
#define KGIDP_TO_SGIDP(x) (x)
#endif /* HAVE_KUIDGID_T */
extern void crhold(cred_t *cr);
extern void crfree(cred_t *cr);
extern uid_t crgetuid(const cred_t *cr);
extern uid_t crgetruid(const cred_t *cr);
extern uid_t crgetsuid(const cred_t *cr);
extern uid_t crgetfsuid(const cred_t *cr);
extern gid_t crgetgid(const cred_t *cr);
extern gid_t crgetrgid(const cred_t *cr);
extern gid_t crgetsgid(const cred_t *cr);
extern gid_t crgetfsgid(const cred_t *cr);
extern int crgetngroups(const cred_t *cr);
extern gid_t * crgetgroups(const cred_t *cr);
extern int groupmember(gid_t gid, const cred_t *cr);
#endif /* _SPL_CRED_H */
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