upstream: Add a -V (version) option to sshd like the ssh client

has. OK markus@ deraadt@

OpenBSD-Commit-ID: abe990ec3e636fb040132aab8cbbede98f0c413e

Author: millert

sshd.8

@@ -33,8 +33,8 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: sshd.8,v 1.321 2022/09/11 06:38:11 jmc Exp $
-.Dd $Mdocdate: September 11 2022 $
+.\" $OpenBSD: sshd.8,v 1.322 2023/01/18 01:50:21 millert Exp $
+.Dd $Mdocdate: January 18 2023 $
 .Dt SSHD 8
 .Os
 .Sh NAME
@@ -43,7 +43,7 @@
 .Sh SYNOPSIS
 .Nm sshd
 .Bk -words
-.Op Fl 46DdeiqTt
+.Op Fl 46DdeiqTtV
 .Op Fl C Ar connection_spec
 .Op Fl c Ar host_certificate_file
 .Op Fl E Ar log_file
@@ -245,6 +245,8 @@ USER@HOST pattern in
 .Cm AllowUsers
 or
 .Cm DenyUsers .
+.It Fl V
+Display the version number and exit.
 .El
 .Sh AUTHENTICATION
 The OpenSSH SSH daemon supports SSH protocol 2 only.

sshd.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: sshd.c,v 1.595 2023/01/06 02:47:19 djm Exp $ */
+/* $OpenBSD: sshd.c,v 1.596 2023/01/18 01:50:21 millert Exp $ */
 /*
  * Author: Tatu Ylonen <[email protected]>
  * Copyright (c) 1995 Tatu Ylonen <[email protected]>, Espoo, Finland
@@ -901,7 +901,7 @@ usage(void)
 {
 	fprintf(stderr, "%s, %s\n", SSH_RELEASE, SSH_OPENSSL_VERSION);
 	fprintf(stderr,
-"usage: sshd [-46DdeiqTt] [-C connection_spec] [-c host_cert_file]\n"
+"usage: sshd [-46DdeiqTtV] [-C connection_spec] [-c host_cert_file]\n"
 "            [-E log_file] [-f config_file] [-g login_grace_time]\n"
 "            [-h host_key_file] [-o option] [-p port] [-u len]\n"
 	);
@@ -1581,7 +1581,7 @@ main(int ac, char **av)
 
 	/* Parse command-line arguments. */
 	while ((opt = getopt(ac, av,
-	    "C:E:b:c:f:g:h:k:o:p:u:46DQRTdeiqrt")) != -1) {
+	    "C:E:b:c:f:g:h:k:o:p:u:46DQRTdeiqrtV")) != -1) {
 		switch (opt) {
 		case '4':
 			options.address_family = AF_INET;
@@ -1682,6 +1682,10 @@ main(int ac, char **av)
 				exit(1);
 			free(line);
 			break;
+		case 'V':
+			fprintf(stderr, "%s, %s\n",
+			    SSH_VERSION, SSH_OPENSSL_VERSION);
+			exit(0);
 		default:
 			usage();
 			break;