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nbd: Simplify trace of client flags in negotiation

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Simplify the tracing of client flags in the server, and return -EINVAL
instead of -EIO if we successfully read but don't like those flags.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20170707203049.534-5-eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Eric Blake 2017-07-07 15:30:44 -05:00 • committed by Paolo Bonzini
parent 3736cc5be3
commit 621c4f4eab
2 changed files with 3 additions and 7 deletions
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6
nbd/server.c
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@ -396,21 +396,19 @@ static int nbd_negotiate_options(NBDClient *client, Error **errp)
error_prepend(errp, "read failed: ");
return -EIO;
}
trace_nbd_negotiate_options_flags();
be32_to_cpus(&flags);
trace_nbd_negotiate_options_flags(flags);
if (flags & NBD_FLAG_C_FIXED_NEWSTYLE) {
trace_nbd_negotiate_options_newstyle();
fixedNewstyle = true;
flags &= ~NBD_FLAG_C_FIXED_NEWSTYLE;
}
if (flags & NBD_FLAG_C_NO_ZEROES) {
trace_nbd_negotiate_options_no_zeroes();
client->no_zeroes = true;
flags &= ~NBD_FLAG_C_NO_ZEROES;
}
if (flags != 0) {
error_setg(errp, "Unknown client flags 0x%" PRIx32 " received", flags);
return -EIO;
return -EINVAL;
}
while (1) {