1  /* Header for nscd SELinux access controls.
       2     Copyright (C) 2004-2023 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 */