nptl/pthread_attr_setstack.c

   1 /* Copyright (C) 2002-2022 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 #include <errno.h>
  19 #include <limits.h>
  20 #include "pthreadP.h"
  21 #include <shlib-compat.h>
  22
  23
  24 #ifndef NEW_VERNUM
  25 # define NEW_VERNUM GLIBC_2_3_3
  26 #endif
  27
  28
  29 int
  30 __pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
  31                          size_t stacksize)
  32 {
  33   struct pthread_attr *iattr;
  34
  35   iattr = (struct pthread_attr *) attr;
  36
  37   /* Catch invalid sizes.  */
  38   int ret = check_stacksize_attr (stacksize);
  39   if (ret)
  40     return ret;
  41
  42 #ifdef EXTRA_PARAM_CHECKS
  43   EXTRA_PARAM_CHECKS;
  44 #endif
  45
  46   iattr->stacksize = stacksize;
  47 #if _STACK_GROWS_DOWN
  48   iattr->stackaddr = (char *) stackaddr + stacksize;
  49 #else
  50   iattr->stackaddr = (char *) stackaddr;
  51 #endif
  52   iattr->flags |= ATTR_FLAG_STACKADDR;
  53
  54   return 0;
  55 }
  56 versioned_symbol (libc, __pthread_attr_setstack, pthread_attr_setstack,
  57                   GLIBC_2_34);
  58
  59 #if PTHREAD_STACK_MIN == 16384
  60 # if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
  61 compat_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
  62                GLIBC_2_2);
  63 # endif
  64 #else /* PTHREAD_STACK_MIN != 16384 */
  65 # if OTHER_SHLIB_COMPAT (libpthread, NEW_VERNUM, GLIBC_2_34)
  66 compat_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
  67                NEW_VERNUM);
  68 # endif
  69
  70 # if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, NEW_VERNUM)
  71 int
  72 __old_pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
  73                              size_t stacksize)
  74 {
  75   struct pthread_attr *iattr;
  76
  77   iattr = (struct pthread_attr *) attr;
  78
  79   /* Catch invalid sizes.  */
  80   if (stacksize < 16384)
  81     return EINVAL;
  82
  83 #  ifdef EXTRA_PARAM_CHECKS
  84   EXTRA_PARAM_CHECKS;
  85 #  endif
  86
  87   iattr->stacksize = stacksize;
  88 #  if _STACK_GROWS_DOWN
  89   iattr->stackaddr = (char *) stackaddr + stacksize;
  90 #  else
  91   iattr->stackaddr = (char *) stackaddr;
  92 #  endif
  93   iattr->flags |= ATTR_FLAG_STACKADDR;
  94
  95   return 0;
  96 }
  97
  98 compat_symbol (libpthread, __old_pthread_attr_setstack, pthread_attr_setstack,
  99                GLIBC_2_2);
 100 # endif /* OTHER_SHLIB_COMPAT */
 101 #endif /* PTHREAD_STACK_MIN != 16384 */