nscd/selinux.h

   1 /* Header for nscd SELinux access controls.
   2    Copyright (C) 2004, 2006 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #ifndef _SELINUX_H
  22 #define _SELINUX_H 1
  23
  24 #include "nscd.h"
  25 #ifdef HAVE_LIBCAP
  26 # include <sys/capabilities.h>
  27 #endif
  28
  29 #ifdef HAVE_SELINUX
  30 /* Global variable to tell if the kernel has SELinux support.  */
  31 extern int selinux_enabled;
  32
  33 /* Define this for AVC stat usage.  */
  34 struct avc_cache_stats;
  35
  36 /* Initialize the userspace AVC.  */
  37 extern void nscd_avc_init (void);
  38 /* Destroy the userspace AVC.  */
  39 extern void nscd_avc_destroy (void);
  40 /* Determine if we are running on an SELinux kernel.  */
  41 extern void nscd_selinux_enabled (int *selinux_enabled);
  42 /* Check if the client has permission for the request type.  */
  43 extern int nscd_request_avc_has_perm (int fd, request_type req);
  44 /* Initialize AVC statistic information.  */
  45 extern void nscd_avc_cache_stats (struct avc_cache_stats *cstats);
  46 /* Display statistics on AVC usage.  */
  47 extern void nscd_avc_print_stats (struct avc_cache_stats *cstats);
  48
  49 # ifdef HAVE_LIBCAP
  50 /* Preserve capabilities to connect to connnect to the audit daemon.  */
  51 extern cap_t preserve_capabilities (void);
  52 /* Install final capabilities.  */
  53 extern void install_real_capabilities (cap_t new_caps);
  54 # endif
  55 #else
  56 # define selinux_enabled 0
  57 # define nscd_avc_init() (void) 0
  58 # define nscd_avc_destroy() (void) 0
  59 # define nscd_selinux_enabled(selinux_enabled) (void) 0
  60 # define nscd_request_avc_has_perm(fd, req) 0
  61 # define nscd_avc_cache_stats(cstats) (void) 0
  62 # define nscd_avc_print_stats(cstats) (void) 0
  63 #endif /* HAVE_SELINUX */
  64
  65 #endif /* _SELINUX_H */