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nfs: fix bitmap decoder to handle a 3rd word

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It only decodes the first two words at this point. Have it decode the
third word as well. Without this, the client doesn't send delegated
timestamps in the CB_GETATTR response.

With this change we also need to expand the on-stack bitmap in
decode_recallany_args to 3 elements, in case the server sends a larger
bitmap than expected.

Fixes: 43df7110f4 ("NFSv4: Add CB_GETATTR support for delegated attributes")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Jeff Layton 2024-08-21 08:28:25 -04:00 committed by Anna Schumaker
parent cb78f9b7d0
commit 95832998fb
1 changed files with 4 additions and 2 deletions
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6
fs/nfs/callback_xdr.c
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@ -118,7 +118,9 @@ static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
if (likely(attrlen > 0))
bitmap[0] = ntohl(*p++);
if (attrlen > 1)
bitmap[1] = ntohl(*p);
bitmap[1] = ntohl(*p++);
if (attrlen > 2)
bitmap[2] = ntohl(*p);
return 0;
}
@ -446,7 +448,7 @@ static __be32 decode_recallany_args(struct svc_rqst *rqstp,
void *argp)
{
struct cb_recallanyargs *args = argp;
uint32_t bitmap[2];
uint32_t bitmap[3];
__be32 *p, status;
p = xdr_inline_decode(xdr, 4);