sysdeps/unix/sysv/linux/sys/prctl.h

   1 /* Copyright (C) 1997-2022 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   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 #ifndef _SYS_PRCTL_H
  19 #define _SYS_PRCTL_H    1
  20
  21 #include <features.h>
  22 #include <linux/prctl.h>  /*  The magic values come from here  */
  23
  24 /* Recent extensions to linux which may post-date the kernel headers
  25    we're picking up...  */
  26
  27 /* Memory tagging control operations (for AArch64).  */
  28 #ifndef PR_MTE_TCF_SHIFT
  29 # define PR_MTE_TCF_SHIFT       1
  30 # define PR_MTE_TCF_NONE        (0UL << PR_MTE_TCF_SHIFT)
  31 # define PR_MTE_TCF_SYNC        (1UL << PR_MTE_TCF_SHIFT)
  32 # define PR_MTE_TCF_ASYNC       (2UL << PR_MTE_TCF_SHIFT)
  33 # define PR_MTE_TCF_MASK        (3UL << PR_MTE_TCF_SHIFT)
  34 # define PR_MTE_TAG_SHIFT       3
  35 # define PR_MTE_TAG_MASK        (0xffffUL << PR_MTE_TAG_SHIFT)
  36 #endif
  37
  38 __BEGIN_DECLS
  39
  40 /* Control process execution.  */
  41 #ifndef __USE_TIME_BITS64
  42 extern int prctl (int __option, ...) __THROW;
  43 #else
  44 # ifdef __REDIRECT
  45 extern int __REDIRECT_NTH (prctl, (int __option, ...), __prctl_time64);
  46 # else
  47 extern int __prctl_time64 (int __option,d ...) __THROW;
  48 #  define ioctl __prctl_time64
  49 # endif
  50 #endif
  51
  52
  53 __END_DECLS
  54
  55 #endif  /* sys/prctl.h */