[pve-devel] [PATCH storage v3 03/13] export: redirect stdout to avoid any unrelated messages ending up in the export stream

[Fiona Ebner <f.ebner@proxmox.com>]

Current export implementations luckily seems to not run into this
issue yet. However, for the upcoming implementation for RBD, mapping a
volume would print the device path to STDOUT, thus messing up the
export stream.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
 src/PVE/CLI/pvesm.pm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/PVE/CLI/pvesm.pm b/src/PVE/CLI/pvesm.pm
index 9b9676b..d308b3d 100755
--- a/src/PVE/CLI/pvesm.pm
+++ b/src/PVE/CLI/pvesm.pm
@@ -315,7 +315,10 @@ __PACKAGE__->register_method ({
 
 	my $outfh;
 	if ($filename eq '-') {
-	    $outfh = \*STDOUT;
+	    # No other messages must go to STDOUT if it's used for the export stream!
+	    open($outfh, '>&', STDOUT) or die "unable to dup() STDOUT - $!\n";
+	    close(STDOUT);
+	    open(STDOUT, '>', '/dev/null');
 	} else {
 	    sysopen($outfh, $filename, O_CREAT|O_WRONLY|O_TRUNC)
 		or die "open($filename): $!\n";
-- 
2.39.5



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