From 97e9a72c71d0238c9f241612ce4af923c16954c7 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 14 Nov 2016 04:55:04 +0100
Subject: [PATCH] Make halt/poweroff/reboot independently selectable

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 init/halt.c | 41 ++++++++++++++++++++++++++++++++---------
 1 file changed, 32 insertions(+), 9 deletions(-)

diff --git a/init/halt.c b/init/halt.c
index 29e60657b..b7fb10869 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -7,22 +7,28 @@
  * Licensed under GPLv2, see file LICENSE in this source tree.
  */
 
-//applet:IF_HALT(APPLET(halt, BB_DIR_SBIN, BB_SUID_DROP))
-//applet:IF_HALT(APPLET_ODDNAME(poweroff, halt, BB_DIR_SBIN, BB_SUID_DROP, poweroff))
-//applet:IF_HALT(APPLET_ODDNAME(reboot, halt, BB_DIR_SBIN, BB_SUID_DROP, reboot))
-
-//kbuild:lib-$(CONFIG_HALT) += halt.o
-
 //config:config HALT
-//config:	bool "poweroff, halt, and reboot"
+//config:	bool "halt"
 //config:	default y
 //config:	help
-//config:	  Stop all processes and either halt, reboot, or power off the system.
+//config:	  Stop all processes and halt the system.
+//config:
+//config:config POWEROFF
+//config:	bool "poweroff"
+//config:	default y
+//config:	help
+//config:	  Stop all processes and power off the system.
+//config:
+//config:config REBOOT
+//config:	bool "reboot"
+//config:	default y
+//config:	help
+//config:	  Stop all processes and reboot the system.
 //config:
 //config:config FEATURE_CALL_TELINIT
 //config:	bool "Call telinit on shutdown and reboot"
 //config:	default y
-//config:	depends on HALT && !INIT
+//config:	depends on (HALT || POWEROFF || REBOOT) && !INIT
 //config:	help
 //config:	  Call an external program (normally telinit) to facilitate
 //config:	  a switch to a proper runlevel.
@@ -39,6 +45,14 @@
 //config:	  to facilitate proper shutdown, this path is to be used when
 //config:	  locating telinit executable.
 
+//applet:IF_HALT(APPLET(halt, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_POWEROFF(APPLET_ODDNAME(poweroff, halt, BB_DIR_SBIN, BB_SUID_DROP, poweroff))
+//applet:IF_REBOOT(APPLET_ODDNAME(reboot, halt, BB_DIR_SBIN, BB_SUID_DROP, reboot))
+
+//kbuild:lib-$(CONFIG_HALT) += halt.o
+//kbuild:lib-$(CONFIG_POWEROFF) += halt.o
+//kbuild:lib-$(CONFIG_REBOOT) += halt.o
+
 //usage:#define halt_trivial_usage
 //usage:       "[-d DELAY] [-n] [-f]" IF_FEATURE_WTMP(" [-w]")
 //usage:#define halt_full_usage "\n\n"
@@ -109,6 +123,15 @@ int halt_main(int argc UNUSED_PARAM, char **argv)
 	int which, flags, rc;
 
 	/* Figure out which applet we're running */
+	if (ENABLE_HALT && !ENABLE_POWEROFF && !ENABLE_REBOOT)
+		which = 0;
+	else
+	if (!ENABLE_HALT && ENABLE_POWEROFF && !ENABLE_REBOOT)
+		which = 1;
+	else
+	if (!ENABLE_HALT && !ENABLE_POWEROFF && ENABLE_REBOOT)
+		which = 2;
+	else
 	for (which = 0; "hpr"[which] != applet_name[0]; which++)
 		continue;