include/os/linux/spl/sys/cred.h

   1 /*
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *
  10  *  The SPL is free software; you can redistribute it and/or modify it
  11  *  under the terms of the GNU General Public License as published by the
  12  *  Free Software Foundation; either version 2 of the License, or (at your
  13  *  option) any later version.
  14  *
  15  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  16  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18  *  for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License along
  21  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #ifndef _SPL_CRED_H
  25 #define _SPL_CRED_H
  26
  27 #include <linux/module.h>
  28 #include <linux/cred.h>
  29 #include <sys/types.h>
  30 #include <sys/vfs.h>
  31
  32 typedef struct cred cred_t;
  33
  34 #define kcred           ((cred_t *)(init_task.cred))
  35 #define CRED()          ((cred_t *)current_cred())
  36
  37 /* Linux 4.9 API change, GROUP_AT was removed */
  38 #ifndef GROUP_AT
  39 #define GROUP_AT(gi, i) ((gi)->gid[i])
  40 #endif
  41
  42 #define KUID_TO_SUID(x)         (__kuid_val(x))
  43 #define KGID_TO_SGID(x)         (__kgid_val(x))
  44 #define SUID_TO_KUID(x)         (KUIDT_INIT(x))
  45 #define SGID_TO_KGID(x)         (KGIDT_INIT(x))
  46 #define KGIDP_TO_SGIDP(x)       (&(x)->val)
  47
  48 extern void crhold(cred_t *cr);
  49 extern void crfree(cred_t *cr);
  50 extern uid_t crgetuid(const cred_t *cr);
  51 extern uid_t crgetruid(const cred_t *cr);
  52 extern uid_t crgetsuid(const cred_t *cr);
  53 extern uid_t crgetfsuid(const cred_t *cr);
  54 extern gid_t crgetgid(const cred_t *cr);
  55 extern gid_t crgetrgid(const cred_t *cr);
  56 extern gid_t crgetsgid(const cred_t *cr);
  57 extern gid_t crgetfsgid(const cred_t *cr);
  58 extern int crgetngroups(const cred_t *cr);
  59 extern gid_t *crgetgroups(const cred_t *cr);
  60 extern int groupmember(gid_t gid, const cred_t *cr);
  61
  62 #endif  /* _SPL_CRED_H */