From 48c7d80de8863e3436b3b5d5676018b2afaec161 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Wed, 25 Feb 2015 13:08:32 -0500 Subject: [PATCH] nbd: Fix interpretation of the export flags The export flags are a 16 bit value, so be16_to_cpu() has to be used to interpret them correctly. This makes discard and flush actually work for named NBD exports (they did not work before, because the client always assumed them to be unsupported because of the bug fixed by this patch). Signed-off-by: Max Reitz Message-Id: <1424887718-10800-20-git-send-email-mreitz@redhat.com> Signed-off-by: Paolo Bonzini --- nbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/nbd.c b/nbd.c index fb8a4d47f3..563e8207d1 100644 --- a/nbd.c +++ b/nbd.c @@ -625,7 +625,7 @@ int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags, error_setg(errp, "Failed to read export flags"); goto fail; } - *flags |= be32_to_cpu(tmp); + *flags |= be16_to_cpu(tmp); } if (read_sync(csock, &buf, 124) != 124) { error_setg(errp, "Failed to read reserved block");