OpenSolaris Launch

1 files changed, 132 insertions, 0 deletions

diff --git a/usr/src/lib/libc/port/gen/sigsetops.c b/usr/src/lib/libc/port/gen/sigsetops.c
new file mode 100644
index 0000000000..efb41693b0
--- /dev/null
+++ b/usr/src/lib/libc/port/gen/sigsetops.c
@@ -0,0 +1,132 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+/*
+ * POSIX signal manipulation functions.
+ */
+#pragma weak sigfillset = _sigfillset
+#pragma weak sigemptyset = _sigemptyset
+#pragma weak sigaddset = _sigaddset
+#pragma weak sigdelset = _sigdelset
+#pragma weak sigismember = _sigismember
+
+#pragma weak _private_sigfillset = _sigfillset
+#pragma weak _private_sigemptyset = _sigemptyset
+#pragma weak _private_sigaddset = _sigaddset
+#pragma weak _private_sigdelset = _sigdelset
+#pragma weak _private_sigismember = _sigismember
+
+#include "synonyms.h"
+#include <sys/types.h>
+#include <stdio.h>
+#include <sys/param.h>
+#include <sys/errno.h>
+#include <sys/signal.h>
+#include <errno.h>
+#include "libc.h"
+
+#define	SIGSETSIZE	4
+#define	MAXBITNO (NBPW*8)
+
+static sigset_t sigs;
+static int sigsinit;
+
+#define	sigword(n) ((n-1)/MAXBITNO)
+#define	bitmask(n) (1L<<((n-1)%MAXBITNO))
+
+static int
+sigvalid(int sig)
+{
+	if (sig <= 0 || sig > (MAXBITNO * SIGSETSIZE))
+		return (0);
+
+	if (!sigsinit) {
+		(void) __sigfillset(&sigs);
+		sigsinit++;
+	}
+
+	return ((sigs.__sigbits[sigword(sig)] & bitmask(sig)) != 0);
+}
+
+int
+sigfillset(sigset_t *set)
+{
+	if (!sigsinit) {
+		(void) __sigfillset(&sigs);
+		sigsinit++;
+	}
+
+	*set = sigs;
+	return (0);
+}
+
+int
+sigemptyset(sigset_t *set)
+{
+	set->__sigbits[0] = 0;
+	set->__sigbits[1] = 0;
+	set->__sigbits[2] = 0;
+	set->__sigbits[3] = 0;
+	return (0);
+}
+
+int
+sigaddset(sigset_t *set, int sig)
+{
+	if (!sigvalid(sig)) {
+		errno = EINVAL;
+		return (-1);
+	}
+	set->__sigbits[sigword(sig)] |= bitmask(sig);
+	return (0);
+}
+
+int
+sigdelset(sigset_t *set, int sig)
+{
+	if (!sigvalid(sig)) {
+		errno = EINVAL;
+		return (-1);
+	}
+	set->__sigbits[sigword(sig)] &= ~bitmask(sig);
+	return (0);
+}
+
+int
+sigismember(const sigset_t *set, int sig)
+{
+	if (!sigvalid(sig)) {
+		errno = EINVAL;
+		return (-1);
+	}
+	return ((set->__sigbits[sigword(sig)] & bitmask(sig)) != 0);
+}