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-rw-r--r--sysdeps/posix/sigpause.c36
1 files changed, 23 insertions, 13 deletions
diff --git a/sysdeps/posix/sigpause.c b/sysdeps/posix/sigpause.c
index 020a46b120..b3eec8f39a 100644
--- a/sysdeps/posix/sigpause.c
+++ b/sysdeps/posix/sigpause.c
@@ -22,25 +22,35 @@
 /* Set the mask of blocked signals to MASK,
    wait for a signal to arrive, and then restore the mask.  */
 int
-__sigpause (mask)
-     int mask;
+__sigpause (sig_or_mask, is_sig)
+     int sig_or_mask;
+     int is_sig;
 {
   sigset_t set;
   int sig;
 
-  if (__sigemptyset (&set) < 0)
-    return -1;
-
-  if (sizeof (mask) == sizeof (set))
-    *(int *) &set = mask;
-  else if (sizeof (unsigned long int) == sizeof (set))
-    *(unsigned long int *) &set = (unsigned int) mask;
+  if (is_sig != 0)
+    {
+      /* The modern X/Open implementation is requested.  */
+      if (sigprocmask (0, NULL, &set) < 0
+	  /* Yes, we call `sigaddset' and not `__sigaddset'.  */
+	  || sigaddset (&set, sig_or_mask) < 0)
+	return -1;
+    }
   else
-    for (sig = 1; sig < NSIG; ++sig)
-      if ((mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
+    {
+      if (__sigemptyset (&set) < 0)
 	return -1;
 
+      if (sizeof (sig_or_mask) == sizeof (set))
+	*(int *) &set = sig_or_mask;
+      else if (sizeof (unsigned long int) == sizeof (set))
+	*(unsigned long int *) &set = (unsigned int) sig_or_mask;
+      else
+	for (sig = 1; sig < NSIG; ++sig)
+	  if ((sig_or_mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
+	    return -1;
+    }
+
   return sigsuspend (&set);
 }
-
-weak_alias (__sigpause, sigpause)