sysdeps/unix/sysv/linux/x86/dl-cet.h

   1 /* Linux/x86 CET initializers function.
   2    Copyright (C) 2018-2023 Free Software Foundation, Inc.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <sys/prctl.h>
  19 #include <asm/prctl.h>
  20
  21 static inline int __attribute__ ((always_inline))
  22 dl_cet_disable_cet (unsigned int cet_feature)
  23 {
  24   return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_CET_DISABLE,
  25                                       cet_feature);
  26 }
  27
  28 static inline int __attribute__ ((always_inline))
  29 dl_cet_lock_cet (void)
  30 {
  31   return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_CET_LOCK, 0);
  32 }