1 files changed, 75 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/posix/sigset.c b/REORG.TODO/sysdeps/posix/sigset.c
new file mode 100644
index 0000000000..a4dfe0ae93
--- /dev/null
+++ b/REORG.TODO/sysdeps/posix/sigset.c
@@ -0,0 +1,75 @@
+/* Copyright (C) 1998-2017 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#define __need_NULL
+#include <stddef.h>
+#include <signal.h>
+#include <string.h>	/* For the real memset prototype.  */
+#include <sigsetops.h>
+
+/* Set the disposition for SIG.  */
+__sighandler_t
+sigset (int sig, __sighandler_t disp)
+{
+  struct sigaction act;
+  struct sigaction oact;
+  sigset_t set;
+  sigset_t oset;
+
+  /* Check signal extents to protect __sigismember.  */
+  if (disp == SIG_ERR || sig < 1 || sig >= NSIG)
+    {
+      __set_errno (EINVAL);
+      return SIG_ERR;
+    }
+
+  __sigemptyset (&set);
+  __sigaddset (&set, sig);
+
+  if (disp == SIG_HOLD)
+    {
+      /* Add the signal to the current signal mask.  */
+      if (__sigprocmask (SIG_BLOCK, &set, &oset) < 0)
+	return SIG_ERR;
+
+      /* If the signal was already blocked signal this to the caller.  */
+      if (__sigismember (&oset, sig))
+	return SIG_HOLD;
+
+      /* We need to determine whether a specific handler is installed.  */
+      if (__sigaction (sig, NULL, &oact) < 0)
+	return SIG_ERR;
+
+      return oact.sa_handler;
+    }
+  else
+    {
+      act.sa_handler = disp;
+      __sigemptyset (&act.sa_mask);
+      act.sa_flags = 0;
+      if (__sigaction (sig, &act, &oact) < 0)
+	return SIG_ERR;
+
+      /* Remove the signal from the current signal mask.  */
+      if (__sigprocmask (SIG_UNBLOCK, &set, &oset) < 0)
+	return SIG_ERR;
+
+      /* If the signal was already blocked return SIG_HOLD.  */
+      return __sigismember (&oset, sig) ? SIG_HOLD : oact.sa_handler;
+    }
+}