From 7dd681d0b442e7ecc9c6dd054ff59691a6795807 Mon Sep 17 00:00:00 2001
From: Tobias Klauser <tklauser@distanz.ch>
Date: Sat, 18 Jul 2009 01:23:03 +0200
Subject: inotify-watch: Print timestamp on every event

---
 inotify-watch.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/inotify-watch.c b/inotify-watch.c
index 9196c1f..b6d8c82 100644
--- a/inotify-watch.c
+++ b/inotify-watch.c
@@ -8,23 +8,34 @@
  * All rights reserved.
  */
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <time.h>
 
 #include <sys/inotify.h>
-
+#include <sys/time.h>
+
+#define log(fmt, args...) do {			\
+	struct timeval now;			\
+	char buf[sizeof("XX:XX:XX")];		\
+	if (gettimeofday(&now, NULL) == 0 &&	\
+	    strftime(buf, sizeof(buf), "%T", localtime(&now.tv_sec)) != 0) { \
+		fprintf(stdout, "%s.%06lu " fmt, buf, now.tv_usec, ##args); \
+	} } while(0)
+#define log_cont(fmt, args...) fprintf(stdout, fmt, ##args)
 #define ARRAY_SIZE(x)	(sizeof(x) / sizeof(*x))
+#define DECLARE_M2STR(x) { x, #x }
 
 struct mask2string {
 	uint32_t mask;
 	const char *desc;
 };
 
-#define DECLARE_M2STR(x) { x, #x }
-
 static const struct mask2string events[] = {
 	DECLARE_M2STR(IN_ACCESS),
 	DECLARE_M2STR(IN_MODIFY),
@@ -53,16 +64,16 @@ static void inotify_print_event(struct inotify_event *inev)
 	unsigned int i;
 
 	/* stat? */
-	printf("(%s) wd=%04x, cookie=%04x, len=%04x, name=\"%s\" :",
+	log("(%s) wd=%04x, cookie=%04x, len=%04x, name=\"%s\" :",
 			inev->mask & IN_ISDIR ? "dir" : "file",
 			inev->wd, inev->cookie, inev->len,
 			inev->len > 0 ? inev->name : "");
 
 	for (i = 0; i < ARRAY_SIZE(events); i++)
 		if (inev->mask & events[i].mask)
-			printf(" %s", events[i].desc);
+			log_cont(" %s", events[i].desc);
 
-	printf("\n");
+	log_cont("\n");
 }
 
 int main(int argc, char *argv[])
@@ -73,7 +84,7 @@ int main(int argc, char *argv[])
 	char buf[1024];
 
 	if (argc < 2) {
-		printf("Usage: %s <path> ...\n", *argv);
+		fprintf(stderr, "Usage: %s <path> ...\n", *argv);
 		exit(EXIT_FAILURE);
 	}
 
-- 
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