From b9b344aa44ba6221edc8f09398325399049bf388 Mon Sep 17 00:00:00 2001
From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Fri, 31 Oct 2008 00:30:48 +0000
Subject: [PATCH] kill[all[5]]: accept -s SIG too. kill_main: +29 bytes  by
 Steve Bennett (steveb AT workware.net.au)

---
 include/usage.h | 13 ++++++++-----
 procps/kill.c   | 10 +++++++---
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/include/usage.h b/include/usage.h
index 9e18ff640..ac62fbf6d 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2041,11 +2041,12 @@
      "\n	-u	Unicode (utf-8)" \
 
 #define kill_trivial_usage \
-       "[-l] [-signal] process-id..."
+       "[-l] [-SIG] PID..."
 #define kill_full_usage "\n\n" \
-       "Send a signal (default is TERM) to the specified process(es)\n" \
+       "Send a signal (default is TERM) to given PIDs\n" \
      "\nOptions:" \
      "\n	-l	List all signal names and numbers" \
+/*   "\n	-s SIG	Yet another way of specifying SIG" */ \
 
 #define kill_example_usage \
        "$ ps | grep apache\n" \
@@ -2058,22 +2059,24 @@
        "$ kill 252\n"
 
 #define killall_trivial_usage \
-       "[-l] [-q] [-signal] process-name..."
+       "[-l] [-q] [-SIG] process-name..."
 #define killall_full_usage "\n\n" \
-       "Send a signal (default is TERM) to the specified process(es)\n" \
+       "Send a signal (default is TERM) to given processes\n" \
      "\nOptions:" \
      "\n	-l	List all signal names and numbers" \
+/*   "\n	-s SIG	Yet another way of specifying SIG" */ \
      "\n	-q	Do not complain if no processes were killed" \
 
 #define killall_example_usage \
        "$ killall apache\n"
 
 #define killall5_trivial_usage \
-       "[-l] [-signal]"
+       "[-l] [-SIG]"
 #define killall5_full_usage "\n\n" \
        "Send a signal (default is TERM) to all processes outside current session\n" \
      "\nOptions:" \
      "\n	-l	List all signal names and numbers" \
+/*   "\n	-s SIG	Yet another way of specifying SIG" */ \
 
 #define klogd_trivial_usage \
        "[-c N] [-n]"
diff --git a/procps/kill.c b/procps/kill.c
index ed659afdc..140550018 100644
--- a/procps/kill.c
+++ b/procps/kill.c
@@ -96,10 +96,14 @@ int kill_main(int argc, char **argv)
 		if (arg[0] != '-') goto do_it_now;
 	}
 
-	/* -SIG */
-	signo = get_signum(&arg[1]);
+	arg++; /* skip '-' */
+	if (argc > 1 && arg[0] == 's' && arg[1] == '\0') { /* -s SIG? */
+		argc--;
+		arg = *++argv;
+	} /* else it must be -SIG */
+	signo = get_signum(arg);
 	if (signo < 0) { /* || signo > MAX_SIGNUM ? */
-		bb_error_msg("bad signal name '%s'", &arg[1]);
+		bb_error_msg("bad signal name '%s'", arg);
 		return EXIT_FAILURE;
 	}
 	arg = *++argv;