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 */ 61