1 files changed, 62 insertions, 0 deletions
diff --git a/lib/libc/gen/nice.c b/lib/libc/gen/nice.c
new file mode 100644
index 0000000000000..7f217059fb114
--- /dev/null
+++ b/lib/libc/gen/nice.c
@@ -0,0 +1,62 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1983, 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 <sys/cdefs.h>
+__SCCSID("@(#)nice.c	8.1 (Berkeley) 6/4/93");
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <errno.h>
+#include <unistd.h>
+
+/*
+ * Backwards compatible nice.
+ */
+int
+nice(int incr)
+{
+	int saverrno, prio;
+
+	saverrno = errno;
+	errno = 0;
+	prio = getpriority(PRIO_PROCESS, 0);
+	if (prio == -1 && errno != 0)
+		return (-1);
+	if (setpriority(PRIO_PROCESS, 0, prio + incr) == -1) {
+		if (errno == EACCES)
+			errno = EPERM;
+		return (-1);
+	}
+	errno = saverrno;
+	return (0);
+}