1 files changed, 119 insertions, 0 deletions
diff --git a/lib/libc/gen/sigsetops.c b/lib/libc/gen/sigsetops.c
new file mode 100644
index 000000000000..3e22b0dba5e9
--- /dev/null
+++ b/lib/libc/gen/sigsetops.c
@@ -0,0 +1,119 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <errno.h>
+#include <signal.h>
+
+int
+sigaddset(sigset_t *set, int signo)
+{
+
+	if (signo <= 0 || signo > _SIG_MAXSIG) {
+		errno = EINVAL;
+		return (-1);
+	}
+	set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo);
+	return (0);
+}
+
+int
+sigdelset(sigset_t *set, int signo)
+{
+
+	if (signo <= 0 || signo > _SIG_MAXSIG) {
+		errno = EINVAL;
+		return (-1);
+	}
+	set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
+	return (0);
+}
+
+int
+sigemptyset(sigset_t *set)
+{
+	int i;
+
+	for (i = 0; i < _SIG_WORDS; i++)
+		set->__bits[i] = 0;
+	return (0);
+}
+
+int
+sigfillset(sigset_t *set)
+{
+	int i;
+
+	for (i = 0; i < _SIG_WORDS; i++)
+		set->__bits[i] = ~0U;
+	return (0);
+}
+
+int
+sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
+{
+	int i;
+
+	for (i = 0; i < _SIG_WORDS; i++)
+		dest->__bits[i] = left->__bits[i] | right->__bits[i];
+	return (0);
+}
+
+int
+sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
+{
+	int i;
+
+	for (i = 0; i < _SIG_WORDS; i++)
+		dest->__bits[i] = left->__bits[i] & right->__bits[i];
+	return (0);
+}
+
+int
+sigisemptyset(const sigset_t *set)
+{
+	int i;
+
+	for (i = 0; i < _SIG_WORDS; i++)
+		if (set->__bits[i] != 0)
+			return (0);
+	return (1);
+}
+
+int
+sigismember(const sigset_t *set, int signo)
+{
+
+	if (signo <= 0 || signo > _SIG_MAXSIG) {
+		errno = EINVAL;
+		return (-1);
+	}
+	return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
+}