From efe030d66c1c8a892bec165e2d181ef157117f11 Mon Sep 17 00:00:00 2001
From: Sami Kerola <kerolasa@iki.fi>
Date: Thu, 15 Mar 2012 22:58:09 +0100
Subject: [PATCH] findfs: add --version & align with howto-usage-function.txt

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---
 misc-utils/findfs.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/misc-utils/findfs.c b/misc-utils/findfs.c
index 04651b3a5..761c6e91f 100644
--- a/misc-utils/findfs.c
+++ b/misc-utils/findfs.c
@@ -16,12 +16,15 @@
 
 static void __attribute__((__noreturn__)) usage(int rc)
 {
-	const char *p = program_invocation_short_name;
-
-	if (!p)
-		p = "findfs";
-
-	fprintf(stderr, _("Usage: %s LABEL=<label>|UUID=<uuid>\n"), p);
+	FILE *out = rc ? stderr : stdout;
+	fputs(USAGE_HEADER, out);
+	fprintf(out, _(" %1$s [options] LABEL=<label>\n"
+		       " %1$s [options] UUID=<uuid>\n"),
+		program_invocation_short_name);
+	fputs(USAGE_OPTIONS, out);
+	fputs(USAGE_HELP, out);
+	fputs(USAGE_VERSION, out);
+	fprintf(out, USAGE_MAN_TAIL("findfs(8)"));
 	exit(rc);
 }
 
@@ -44,8 +47,12 @@ int main(int argc, char **argv)
 	} else if (!strncmp(argv[1], "UUID=", 5)) {
 		tk = "UUID";
 		vl = argv[1] + 5;
-	} else if (!strcmp(argv[1], "-h") == 0 ||
-		   !strcmp(argv[1], "--help") == 0) {
+	} else if (strcmp(argv[1], "-V") == 0 ||
+		   strcmp(argv[1], "--version") == 0) {
+		printf(UTIL_LINUX_VERSION);
+		return EXIT_SUCCESS;
+	} else if (strcmp(argv[1], "-h") == 0 ||
+		   strcmp(argv[1], "--help") == 0) {
 		usage(EXIT_SUCCESS);
 	} else
 		usage(2);