adjtimex: make it NOFORK

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/miscutils/adjtimex.c b/miscutils/adjtimex.c
index a39c4f5..ce6f8cc 100644
--- a/miscutils/adjtimex.c
+++ b/miscutils/adjtimex.c
@@ -18,7 +18,7 @@
 //config:	Adjtimex reads and optionally sets adjustment parameters for
 //config:	the Linux clock adjustment algorithm.
 
-//applet:IF_ADJTIMEX(APPLET(adjtimex, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_ADJTIMEX(APPLET_NOFORK(adjtimex, adjtimex, BB_DIR_SBIN, BB_SUID_DROP, adjtimex))
 
 //kbuild:lib-$(CONFIG_ADJTIMEX) += adjtimex.o
 
@@ -116,6 +116,11 @@
 		txc.modes |= ADJ_TICK;
 	}
 
+	/* It's NOFORK applet because the code is very simple:
+	 * just some printf. No opens, no allocs.
+	 * If you need to make it more complex, feel free to downgrade to NOEXEC
+	 */
+
 	ret = adjtimex(&txc);
 	if (ret < 0)
 		bb_perror_nomsg_and_die();