linux-kernel - [PATCH 1/2] tools/leds: Add '-h' & '--help' cmd line options to uledmon

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Message-Id: <20240820072341.41153-2-rajkumarvad@gmail.com>
Date: Tue, 20 Aug 2024 12:53:40 +0530
From: Rajkumar Vadhyar <rajkumarvad@...il.com>
To: jacek.anaszewski@...il.com,
	rbmarliere@...il.com,
	skhan@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org,
	Rajkumar Vadhyar <rajkumarvad@...il.com>
Subject: [PATCH 1/2] tools/leds: Add '-h' & '--help' cmd line options to uledmon

Add '-h' and '--help' command line options to uledmon

Signed-off-by: Rajkumar Vadhyar <rajkumarvad@...il.com> 
---
 tools/leds/uledmon.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/leds/uledmon.c b/tools/leds/uledmon.c
index c15a39c1f271..6609235d80b0 100644
--- a/tools/leds/uledmon.c
+++ b/tools/leds/uledmon.c
@@ -11,6 +11,8 @@
  * CTRL+C will exit.
  */
 
+#define	ULEDMON_USAGE	"Usage: ./uledmon <device-name>\n"
+
 #include <fcntl.h>
 #include <stdio.h>
 #include <string.h>
@@ -19,6 +21,7 @@
 
 #include <linux/uleds.h>
 
+
 int main(int argc, char const *argv[])
 {
 	struct uleds_user_dev uleds_dev;
@@ -30,6 +33,10 @@ int main(int argc, char const *argv[])
 		fprintf(stderr, "Requires <device-name> argument\n");
 		return 1;
 	}
+	if (!(strcmp(argv[1], "-h")) || !(strcmp(argv[1], "--help"))) {
+		fprintf(stderr, ULEDMON_USAGE);
+		return 1;
+	}
 
 	strncpy(uleds_dev.name, argv[1], LED_MAX_NAME_SIZE);
 	uleds_dev.max_brightness = 100;
-- 
2.40.1