1 files changed, 38 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sysconf-sigstksz.h b/sysdeps/unix/sysv/linux/sysconf-sigstksz.h
new file mode 100644
index 0000000000..64d450b22c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sysconf-sigstksz.h
@@ -0,0 +1,38 @@
+/* sysconf_sigstksz ().  Linux version.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* Return sysconf (_SC_SIGSTKSZ).  */
+
+static long int
+sysconf_sigstksz (void)
+{
+  long int minsigstacksize = GLRO(dl_minsigstacksize);
+  assert (minsigstacksize != 0);
+  _Static_assert (__builtin_constant_p (MINSIGSTKSZ),
+		  "MINSIGSTKSZ is constant");
+  if (minsigstacksize < MINSIGSTKSZ)
+    minsigstacksize = MINSIGSTKSZ;
+  /* MAX (MINSIGSTKSZ, sysconf (_SC_MINSIGSTKSZ)) * 4.  */
+  long int sigstacksize = minsigstacksize * 4;
+  /* Return MAX (SIGSTKSZ, sigstacksize).  */
+  _Static_assert (__builtin_constant_p (SIGSTKSZ),
+		  "SIGSTKSZ is constant");
+  if (sigstacksize < SIGSTKSZ)
+    sigstacksize = SIGSTKSZ;
+  return sigstacksize;
+}