nptl/pthread_attr_setstack.c

   1 /* Copyright (C) 2002-2021 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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 #include <errno.h>
  20 #include <limits.h>
  21 #include "pthreadP.h"
  22 #include <shlib-compat.h>
  23
  24
  25 #ifndef NEW_VERNUM
  26 # define NEW_VERNUM GLIBC_2_3_3
  27 #endif
  28
  29
  30 int
  31 __pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
  32                          size_t stacksize)
  33 {
  34   struct pthread_attr *iattr;
  35
  36   iattr = (struct pthread_attr *) attr;
  37
  38   /* Catch invalid sizes.  */
  39   int ret = check_stacksize_attr (stacksize);
  40   if (ret)
  41     return ret;
  42
  43 #ifdef EXTRA_PARAM_CHECKS
  44   EXTRA_PARAM_CHECKS;
  45 #endif
  46
  47   iattr->stacksize = stacksize;
  48 #if _STACK_GROWS_DOWN
  49   iattr->stackaddr = (char *) stackaddr + stacksize;
  50 #else
  51   iattr->stackaddr = (char *) stackaddr;
  52 #endif
  53   iattr->flags |= ATTR_FLAG_STACKADDR;
  54
  55   return 0;
  56 }
  57 versioned_symbol (libc, __pthread_attr_setstack, pthread_attr_setstack,
  58                   GLIBC_2_34);
  59
  60 #if PTHREAD_STACK_MIN == 16384
  61 # if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
  62 compat_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
  63                GLIBC_2_2);
  64 # endif
  65 #else /* PTHREAD_STACK_MIN != 16384 */
  66 # if OTHER_SHLIB_COMPAT (libpthread, NEW_VERNUM, GLIBC_2_34)
  67 compat_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
  68                NEW_VERNUM);
  69 # endif
  70
  71 # if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, NEW_VERNUM)
  72 int
  73 __old_pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
  74                              size_t stacksize)
  75 {
  76   struct pthread_attr *iattr;
  77
  78   iattr = (struct pthread_attr *) attr;
  79
  80   /* Catch invalid sizes.  */
  81   if (stacksize < 16384)
  82     return EINVAL;
  83
  84 #  ifdef EXTRA_PARAM_CHECKS
  85   EXTRA_PARAM_CHECKS;
  86 #  endif
  87
  88   iattr->stacksize = stacksize;
  89 #  if _STACK_GROWS_DOWN
  90   iattr->stackaddr = (char *) stackaddr + stacksize;
  91 #  else
  92   iattr->stackaddr = (char *) stackaddr;
  93 #  endif
  94   iattr->flags |= ATTR_FLAG_STACKADDR;
  95
  96   return 0;
  97 }
  98
  99 compat_symbol (libpthread, __old_pthread_attr_setstack, pthread_attr_setstack,
 100                GLIBC_2_2);
 101 # endif /* OTHER_SHLIB_COMPAT */
 102 #endif /* PTHREAD_STACK_MIN != 16384 */