1 files changed, 56 insertions, 0 deletions
diff --git a/util/sbase/nice.c b/util/sbase/nice.c
new file mode 100644
index 00000000..d036e26c
--- /dev/null
+++ b/util/sbase/nice.c
@@ -0,0 +1,56 @@
+/* See LICENSE file for copyright and license details. */
+#include <sys/resource.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "util.h"
+
+#ifndef PRIO_MIN
+#define PRIO_MIN -NZERO
+#endif
+
+#ifndef PRIO_MAX
+#define PRIO_MAX (NZERO-1)
+#endif
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [-n inc] cmd [arg ...]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	int val = 10, r, savederrno;
+
+	ARGBEGIN {
+	case 'n':
+		val = estrtonum(EARGF(usage()), PRIO_MIN, PRIO_MAX);
+		break;
+	default:
+		usage();
+		break;
+	} ARGEND
+
+	if (!argc)
+		usage();
+
+	errno = 0;
+	r = getpriority(PRIO_PROCESS, 0);
+	if (errno)
+		weprintf("getpriority:");
+	else
+		val += r;
+	LIMIT(val, PRIO_MIN, PRIO_MAX);
+	if (setpriority(PRIO_PROCESS, 0, val) < 0)
+		weprintf("setpriority:");
+
+	execvp(argv[0], argv);
+	savederrno = errno;
+	weprintf("execvp %s:", argv[0]);
+
+	_exit(126 + (savederrno == ENOENT));
+}