[PATCH] add --version arg to tgt, tgtadm

[Alexander Nezhinsky <alexandern@xxxxxxxxxxxx>]

Added --version, -V arg to tgtd and tgtadm, to print version and exit.
Useful for scripts, e.g. to quickly check that tgtd and tgtadm versions match.

Signed-off-by: Alexander Nezhinsky <alexandern@xxxxxxxxxxxx>
---
 usr/tgtadm.c |   12 +++++++++++-
 usr/tgtd.c   |   14 +++++++++++---
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/usr/tgtadm.c b/usr/tgtadm.c
index 149767e..e81a419 100644
--- a/usr/tgtadm.c
+++ b/usr/tgtadm.c
@@ -90,6 +90,7 @@ static const char * tgtadm_strerror(int err)
 struct option const long_options[] = {
 	{"debug", no_argument, NULL, 'd'},
 	{"help", no_argument, NULL, 'h'},
+	{"version", no_argument, NULL, 'V'},
 	{"lld", required_argument, NULL, 'L'},
 	{"op", required_argument, NULL, 'o'},
 	{"mode", required_argument, NULL, 'm'},
@@ -116,7 +117,7 @@ struct option const long_options[] = {
 	{NULL, 0, NULL, 0},
 };
 
-static char *short_options = "dhL:o:m:t:s:c:l:n:v:b:E:f:T:I:u:p:H:P:B:Y:O:C:";
+static char *short_options = "dhVL:o:m:t:s:c:l:n:v:b:E:f:T:I:u:p:H:P:B:Y:O:C:";
 
 static void usage(int status)
 {
@@ -176,6 +177,12 @@ Report bugs to <stgt@xxxxxxxxxxxxxxx>.\n", TGT_VERSION);
 	exit(status == 0 ? 0 : EINVAL);
 }
 
+static void version(void)
+{
+	printf("%s\n", TGT_VERSION);
+	exit(0);
+}
+
 /* default port to use for the mgmt channel */
 static short int control_port = 0;
 
@@ -527,6 +534,9 @@ int main(int argc, char **argv)
 		case 'C':
 			control_port = strtol(optarg, NULL, 10);
 			break;
+		case 'V':
+			version();
+			break;
 		case 'd':
 			debug = 1;
 			break;
diff --git a/usr/tgtd.c b/usr/tgtd.c
index 13ff65c..c3abca8 100644
--- a/usr/tgtd.c
+++ b/usr/tgtd.c
@@ -55,11 +55,12 @@ static struct option const long_options[] =
 	{"foreground", no_argument, 0, 'f'},
 	{"control-port", required_argument, 0, 'C'},
 	{"debug", required_argument, 0, 'd'},
+	{"version", no_argument, 0, 'V'},
 	{"help", no_argument, 0, 'h'},
 	{0, 0, 0, 0},
 };
 
-static char *short_options = "fC:d:h";
+static char *short_options = "fC:d:Vh";
 
 static void usage(int status)
 {
@@ -72,12 +73,19 @@ Target framework daemon, version %s\n\
   -f, --foreground        make the program run in the foreground\n\
   -C, --control-port NNNN use port NNNN for the mgmt channel\n\
   -d, --debug debuglevel  print debugging information\n\
+  -V, --version           print version and exit\n\
   -h, --help              display this help and exit\n\
 ", TGT_VERSION);
 	}
 	exit(status);
 }
 
+static void version(void)
+{
+	printf("%s\n", TGT_VERSION);
+	exit(0);
+}
+
 /* Default TGT mgmt port */
 short int control_port = 0;
 
@@ -459,8 +467,8 @@ int main(int argc, char **argv)
 		case 'd':
 			is_debug = atoi(optarg);
 			break;
-		case 'v':
-			exit(0);
+		case 'V':
+			version();
 			break;
 		case 'h':
 			usage(0);
--
1.6.5.5
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