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nbd: Fix interpretation of the export flags

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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 <mreitz@redhat.com>
Message-Id: <1424887718-10800-20-git-send-email-mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Max Reitz 2015-02-25 13:08:32 -05:00 committed by Paolo Bonzini
parent 9c122adadb
commit 48c7d80de8
1 changed files with 1 additions and 1 deletions
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2
nbd.c
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@ -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");