nscd/selinux.h

   1 /* Header for nscd SELinux access controls.
   2    Copyright (C) 2004-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SELINUX_H
  20 #define _SELINUX_H 1
  21
  22 #include "nscd.h"
  23 #ifdef HAVE_LIBCAP
  24 # include <sys/capability.h>
  25 #endif
  26
  27 #ifdef HAVE_SELINUX
  28 /* Global variable to tell if the kernel has SELinux support.  */
  29 extern int selinux_enabled;
  30
  31 /* Define this for AVC stat usage.  */
  32 struct avc_cache_stats;
  33
  34 /* Initialize the userspace AVC.  */
  35 extern void nscd_avc_init (void);
  36 /* Determine if we are running on an SELinux kernel.  */
  37 extern void nscd_selinux_enabled (int *selinux_enabled);
  38 /* Check if the client has permission for the request type.  */
  39 extern int nscd_request_avc_has_perm (int fd, request_type req);
  40 /* Initialize AVC statistic information.  */
  41 extern void nscd_avc_cache_stats (struct avc_cache_stats *cstats);
  42 /* Display statistics on AVC usage.  */
  43 extern void nscd_avc_print_stats (struct avc_cache_stats *cstats);
  44
  45 # ifdef HAVE_LIBCAP
  46 /* Preserve capabilities to connect to the audit daemon. */
  47 extern cap_t preserve_capabilities (void);
  48 /* Install final capabilities.  */
  49 extern void install_real_capabilities (cap_t new_caps);
  50 # endif
  51 #else
  52 # define selinux_enabled 0
  53 # define nscd_avc_init() (void) 0
  54 # define nscd_selinux_enabled(selinux_enabled) (void) 0
  55 # define nscd_request_avc_has_perm(fd, req) 0
  56 # define nscd_avc_cache_stats(cstats) (void) 0
  57 # define nscd_avc_print_stats(cstats) (void) 0
  58 #endif /* HAVE_SELINUX */
  59
  60 #endif /* _SELINUX_H */