1 files changed, 55 insertions, 0 deletions
diff --git a/release/src/router/busybox/coreutils/nice.c b/release/src/router/busybox/coreutils/nice.c
new file mode 100644
index 00000000..d24a95b4
--- /dev/null
+++ b/release/src/router/busybox/coreutils/nice.c
@@ -0,0 +1,55 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * nice implementation for busybox
+ *
+ * Copyright (C) 2005  Manuel Novoa III  <mjn3@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include <sys/resource.h>
+#include "libbb.h"
+
+int nice_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int nice_main(int argc, char **argv)
+{
+	int old_priority, adjustment;
+
+	old_priority = getpriority(PRIO_PROCESS, 0);
+
+	if (!*++argv) {	/* No args, so (GNU) output current nice value. */
+		printf("%d\n", old_priority);
+		fflush_stdout_and_exit(EXIT_SUCCESS);
+	}
+
+	adjustment = 10;			/* Set default adjustment. */
+
+	if (argv[0][0] == '-') {
+		if (argv[0][1] == 'n') { /* -n */
+			if (argv[0][2]) { /* -nNNNN (w/o space) */
+				argv[0] += 2; argv--; argc++;
+			}
+		} else { /* -NNN (NNN may be negative) == -n NNN */
+			argv[0] += 1; argv--; argc++;
+		}
+		if (argc < 4) {			/* Missing priority and/or utility! */
+			bb_show_usage();
+		}
+		adjustment = xatoi_range(argv[1], INT_MIN/2, INT_MAX/2);
+		argv += 2;
+	}
+
+	{  /* Set our priority. */
+		int prio = old_priority + adjustment;
+
+		if (setpriority(PRIO_PROCESS, 0, prio) < 0) {
+			bb_perror_msg_and_die("setpriority(%d)", prio);
+		}
+	}
+
+	BB_EXECVP(*argv, argv);		/* Now exec the desired program. */
+
+	/* The exec failed... */
+	xfunc_error_retval = (errno == ENOENT) ? 127 : 126; /* SUSv3 */
+	bb_simple_perror_msg_and_die(*argv);
+}