1 files changed, 73 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/sigwaitinfo.c b/REORG.TODO/sysdeps/unix/sysv/linux/sigwaitinfo.c
new file mode 100644
index 0000000000..5a044f08e3
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/sigwaitinfo.c
@@ -0,0 +1,73 @@
+/* Copyright (C) 1997-2017 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>
+#include <signal.h>
+#define __need_NULL
+#include <stddef.h>
+#include <string.h>
+
+#include <nptl/pthreadP.h>
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+
+#ifdef __NR_rt_sigtimedwait
+
+/* Return any pending signal or wait for one for the given time.  */
+int
+__sigwaitinfo (const sigset_t *set, siginfo_t *info)
+{
+#ifdef SIGCANCEL
+  sigset_t tmpset;
+  if (set != NULL
+      && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+	  || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+	  ))
+    {
+      /* Create a temporary mask without the bit for SIGCANCEL set.  */
+      // We are not copying more than we have to.
+      memcpy (&tmpset, set, _NSIG / 8);
+      __sigdelset (&tmpset, SIGCANCEL);
+# ifdef SIGSETXID
+      __sigdelset (&tmpset, SIGSETXID);
+# endif
+      set = &tmpset;
+    }
+#endif
+
+  /* XXX The size argument hopefully will have to be changed to the
+     real size of the user-level sigset_t.  */
+  int result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, NULL, _NSIG / 8);
+
+  /* The kernel generates a SI_TKILL code in si_code in case tkill is
+     used.  tkill is transparently used in raise().  Since having
+     SI_TKILL as a code is useful in general we fold the results
+     here.  */
+  if (result != -1 && info != NULL && info->si_code == SI_TKILL)
+    info->si_code = SI_USER;
+
+  return result;
+}
+
+libc_hidden_def (__sigwaitinfo)
+weak_alias (__sigwaitinfo, sigwaitinfo)
+#else
+# include <signal/sigwaitinfo.c>
+#endif
+strong_alias (__sigwaitinfo, __libc_sigwaitinfo)