1 /* sysconf_sigstksz (). Linux version. 2 Copyright (C) 2020-2022 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 /* Return sysconf (_SC_SIGSTKSZ). */ 20 21 static long int sysconf_sigstksz(void)22sysconf_sigstksz (void) 23 { 24 long int minsigstacksize = GLRO(dl_minsigstacksize); 25 assert (minsigstacksize != 0); 26 _Static_assert (__builtin_constant_p (MINSIGSTKSZ), 27 "MINSIGSTKSZ is constant"); 28 if (minsigstacksize < MINSIGSTKSZ) 29 minsigstacksize = MINSIGSTKSZ; 30 /* MAX (MINSIGSTKSZ, sysconf (_SC_MINSIGSTKSZ)) * 4. */ 31 long int sigstacksize = minsigstacksize * 4; 32 /* Return MAX (SIGSTKSZ, sigstacksize). */ 33 _Static_assert (__builtin_constant_p (SIGSTKSZ), 34 "SIGSTKSZ is constant"); 35 if (sigstacksize < SIGSTKSZ) 36 sigstacksize = SIGSTKSZ; 37 return sigstacksize; 38 } 39