include/os/linux/spl/sys/zone.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_ZONE_H
  25 #define _SPL_ZONE_H
  26
  27 #include <sys/byteorder.h>
  28 #include <sys/cred.h>
  29
  30 #include <linux/cred.h>
  31 #include <linux/user_namespace.h>
  32
  33 /*
  34  * Attach the given dataset to the given user namespace.
  35  */
  36 extern int zone_dataset_attach(cred_t *, const char *, int);
  37
  38 /*
  39  * Detach the given dataset from the given user namespace.
  40  */
  41 extern int zone_dataset_detach(cred_t *, const char *, int);
  42
  43 /*
  44  * Returns true if the named pool/dataset is visible in the current zone.
  45  */
  46 extern int zone_dataset_visible(const char *dataset, int *write);
  47
  48 int spl_zone_init(void);
  49 void spl_zone_fini(void);
  50
  51 extern unsigned int crgetzoneid(const cred_t *);
  52 extern unsigned int global_zoneid(void);
  53 extern boolean_t inglobalzone(proc_t *);
  54
  55 #define INGLOBALZONE(x) inglobalzone(x)
  56 #define GLOBAL_ZONEID   global_zoneid()
  57
  58 #endif /* SPL_ZONE_H */