nscd/selinux.h

   1 /* Header for nscd SELinux access controls.
   2    Copyright (C) 2004-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Matthew Rickard <mjricka@epoch.ncsc.mil>, 2004.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _SELINUX_H
  21 #define _SELINUX_H 1
  22
  23 #include "nscd.h"
  24 #ifdef HAVE_LIBCAP
  25 # include <sys/capability.h>
  26 #endif
  27
  28 #ifdef HAVE_SELINUX
  29 /* Global variable to tell if the kernel has SELinux support.  */
  30 extern int selinux_enabled;
  31
  32 /* Define this for AVC stat usage.  */
  33 struct avc_cache_stats;
  34
  35 /* Initialize the userspace AVC.  */
  36 extern void nscd_avc_init (void);
  37 /* Determine if we are running on an SELinux kernel.  */
  38 extern void nscd_selinux_enabled (int *selinux_enabled);
  39 /* Check if the client has permission for the request type.  */
  40 extern int nscd_request_avc_has_perm (int fd, request_type req);
  41 /* Initialize AVC statistic information.  */
  42 extern void nscd_avc_cache_stats (struct avc_cache_stats *cstats);
  43 /* Display statistics on AVC usage.  */
  44 extern void nscd_avc_print_stats (struct avc_cache_stats *cstats);
  45
  46 # ifdef HAVE_LIBCAP
  47 /* Preserve capabilities to connect to the audit daemon. */
  48 extern cap_t preserve_capabilities (void);
  49 /* Install final capabilities.  */
  50 extern void install_real_capabilities (cap_t new_caps);
  51 # endif
  52 #else
  53 # define selinux_enabled 0
  54 # define nscd_avc_init() (void) 0
  55 # define nscd_selinux_enabled(selinux_enabled) (void) 0
  56 # define nscd_request_avc_has_perm(fd, req) 0
  57 # define nscd_avc_cache_stats(cstats) (void) 0
  58 # define nscd_avc_print_stats(cstats) (void) 0
  59 #endif /* HAVE_SELINUX */
  60
  61 #endif /* _SELINUX_H */