[PATCH] sigpause(2) doesn't check signal validity before setting mask

[Garrett Cooper]

    The following patch fixes the case where the value for sigmask
specified is invalid (to match the requirements stated in the manpage
and POSIX), and also converts the parameter name -- mask -- to match
the manpage.
Thanks,
-Garrett

Index: compat-43/sigcompat.c
===================================================================
--- compat-43/sigcompat.c	(revision 210226)
+++ compat-43/sigcompat.c	(working copy)
@@ -99,12 +99,16 @@
 }

 int
-sigpause(int mask)
+sigpause(int sigmask)
 {
 	sigset_t set;

+	if (!_SIG_VALID(sigmask)) {
+		errno = EINVAL;
+		return (-1);
+	}
 	sigemptyset(&set);
-	set.__bits[0] = mask;
+	set.__bits[0] = sigmask;
 	return (_sigsuspend(&set));
 }