Export XSI sigpause

There are two common sigpause variants, both of which take an int argument.
If you request _XOPEN_SOURCE or _GNU_SOURCE, you get the System V version,
which removes the given signal from the process's signal mask; otherwise
you get the BSD version, which sets the process's signal mask to the given
value.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/winsup/cygwin/signal.cc b/winsup/cygwin/signal.cc
index f371a231b..fbd2b241e 100644
--- a/winsup/cygwin/signal.cc
+++ b/winsup/cygwin/signal.cc
@@ -524,6 +524,18 @@ sigpause (int signal_mask)
 }
 
 extern "C" int
+__xpg_sigpause (int sig)
+{
+  int res;
+  sigset_t signal_mask;
+  sigprocmask (0, NULL, &signal_mask);
+  sigdelset (&signal_mask, sig);
+  res = handle_sigsuspend (signal_mask);
+  syscall_printf ("%R = __xpg_sigpause(%y)", res, sig);
+  return res;
+}
+
+extern "C" int
 pause (void)
 {
   int res = handle_sigsuspend (_my_tls.sigmask);