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Commit 8b064946 authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
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NFSv4: Clean up CB_GETATTR encoding 



Replace the open coded bitmap implementation with a generic one.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 8bcbe7d9

fs/nfs/callback_xdr.c

+8 −29
Original line number Diff line number Diff line
@@ -535,35 +535,10 @@ static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char 
	return 0;

}



#define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE)

#define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY)

static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep)

static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, size_t sz)

{

	__be32 bm[2];

	__be32 *p;



	bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0);

	bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1);

	if (bm[1] != 0) {

		p = xdr_reserve_space(xdr, 16);

		if (unlikely(p == NULL))

			return htonl(NFS4ERR_RESOURCE);

		*p++ = htonl(2);

		*p++ = bm[0];

		*p++ = bm[1];

	} else if (bm[0] != 0) {

		p = xdr_reserve_space(xdr, 12);

		if (unlikely(p == NULL))

			return htonl(NFS4ERR_RESOURCE);

		*p++ = htonl(1);

		*p++ = bm[0];

	} else {

		p = xdr_reserve_space(xdr, 8);

		if (unlikely(p == NULL))

			return htonl(NFS4ERR_RESOURCE);

		*p++ = htonl(0);

	}

	*savep = p;

	if (xdr_stream_encode_uint32_array(xdr, bitmap, sz) < 0)

		return cpu_to_be32(NFS4ERR_RESOURCE);

	return 0;

}
@@ -656,9 +631,13 @@ static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, 
	

	if (unlikely(status != 0))

		goto out;

	status = encode_attr_bitmap(xdr, res->bitmap, &savep);

	status = encode_attr_bitmap(xdr, res->bitmap, ARRAY_SIZE(res->bitmap));

	if (unlikely(status != 0))

		goto out;

	status = cpu_to_be32(NFS4ERR_RESOURCE);

	savep = xdr_reserve_space(xdr, sizeof(*savep));

	if (unlikely(!savep))

		goto out;

	status = encode_attr_change(xdr, res->bitmap, res->change_attr);

	if (unlikely(status != 0))

		goto out;