run the 2nd ssh with BatchMode for scp -3

2 files changed, 8 insertions, 4 deletions

diff --git a/usr.bin/ssh/scp.1 b/usr.bin/ssh/scp.1
index 9c3a8536649..36d9e735e79 100644
--- a/usr.bin/ssh/scp.1
+++ b/usr.bin/ssh/scp.1
@@ -8,9 +8,9 @@
 .\"
 .\" Created: Sun May  7 00:14:37 1995 ylo
 .\"
-.\" $OpenBSD: scp.1,v 1.87 2019/11/30 07:07:59 jmc Exp $
+.\" $OpenBSD: scp.1,v 1.88 2020/04/30 17:07:10 markus Exp $
 .\"
-.Dd $Mdocdate: November 30 2019 $
+.Dd $Mdocdate: April 30 2020 $
 .Dt SCP 1
 .Os
 .Sh NAME
@@ -74,7 +74,10 @@ The options are as follows:
 Copies between two remote hosts are transferred through the local host.
 Without this option the data is copied directly between the two remote
 hosts.
-Note that this option disables the progress meter.
+Note that this option disables the progress meter and selects batch mode
+for the second host, since
+.Nm scp
+cannot ask passwords or passphrases for both hosts.
 .It Fl 4
 Forces
 .Nm
diff --git a/usr.bin/ssh/scp.c b/usr.bin/ssh/scp.c
index 4830ae1f58f..4b800268bce 100644
--- a/usr.bin/ssh/scp.c
+++ b/usr.bin/ssh/scp.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: scp.c,v 1.207 2020/01/23 07:10:22 dtucker Exp $ */
+/* $OpenBSD: scp.c,v 1.208 2020/04/30 17:07:10 markus Exp $ */
 /*
  * scp - secure remote copy.  This is basically patched BSD rcp which
  * uses ssh to do the data transfer (instead of using rcmd).
@@ -328,6 +328,7 @@ do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout)
 			addargs(&args, "-l");
 			addargs(&args, "%s", remuser);
 		}
+		addargs(&args, "-oBatchMode=yes");
 		addargs(&args, "--");
 		addargs(&args, "%s", host);
 		addargs(&args, "%s", cmd);