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NFS COPY xdr handle async reply

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If server returns async reply, it must include a callback stateid,
wr_callback_id in the write_response4.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Olga Kornievskaia 2018-07-09 15:13:30 -04:00 committed by Anna Schumaker
parent cb95deea0b
commit 67aa7444c4
2 changed files with 13 additions and 10 deletions
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22
fs/nfs/nfs42xdr.c
View File

@ -389,21 +389,23 @@ static int decode_write_response(struct xdr_stream *xdr,
struct nfs42_write_res *res)
{
__be32 *p;
int status, count;
p = xdr_inline_decode(xdr, 4 + 8 + 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
/*
* We never use asynchronous mode, so warn if a server returns
* a stateid.
*/
if (unlikely(*p != 0)) {
pr_err_once("%s: server has set unrequested "
"asynchronous mode\n", __func__);
count = be32_to_cpup(p);
if (count > 1)
return -EREMOTEIO;
else if (count == 1) {
status = decode_opaque_fixed(xdr, &res->stateid,
NFS4_STATEID_SIZE);
if (unlikely(status))
goto out_overflow;
}
p++;
p = xdr_inline_decode(xdr, 8 + 4);
if (unlikely(!p))
goto out_overflow;
p = xdr_decode_hyper(p, &res->count);
res->verifier.committed = be32_to_cpup(p);
return decode_verifier(xdr, &res->verifier.verifier);

1
include/linux/nfs_xdr.h
View File

@ -1391,6 +1391,7 @@ struct nfs42_copy_args {
};
struct nfs42_write_res {
nfs4_stateid stateid;
u64 count;
struct nfs_writeverf verifier;
};