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Commit 75976de6 authored by Kinglong Mee's avatar Kinglong Mee Committed by J. Bruce Fields
Browse files

NFSD: Return word2 bitmask if setting security label in OPEN/CREATE 



Security label can be set in OPEN/CREATE request, nfsd should set
the bitmask in word2 if setting success.

Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent ead8fb8c

fs/nfsd/nfs4xdr.c

+56 −39
Original line number Diff line number Diff line
@@ -2226,6 +2226,39 @@ static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) 
	return err;

}



static __be32

nfsd4_encode_bitmap(struct xdr_stream *xdr, u32 bmval0, u32 bmval1, u32 bmval2)

{

	__be32 *p;



	if (bmval2) {

		p = xdr_reserve_space(xdr, 16);

		if (!p)

			goto out_resource;

		*p++ = cpu_to_be32(3);

		*p++ = cpu_to_be32(bmval0);

		*p++ = cpu_to_be32(bmval1);

		*p++ = cpu_to_be32(bmval2);

	} else if (bmval1) {

		p = xdr_reserve_space(xdr, 12);

		if (!p)

			goto out_resource;

		*p++ = cpu_to_be32(2);

		*p++ = cpu_to_be32(bmval0);

		*p++ = cpu_to_be32(bmval1);

	} else {

		p = xdr_reserve_space(xdr, 8);

		if (!p)

			goto out_resource;

		*p++ = cpu_to_be32(1);

		*p++ = cpu_to_be32(bmval0);

	}



	return 0;

out_resource:

	return nfserr_resource;

}



/*

 * Note: @fhp can be NULL; in this case, we might have to compose the filehandle

 * ourselves.
@@ -2322,28 +2355,9 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, 
	}

#endif /* CONFIG_NFSD_V4_SECURITY_LABEL */



	if (bmval2) {

		p = xdr_reserve_space(xdr, 16);

		if (!p)

			goto out_resource;

		*p++ = cpu_to_be32(3);

		*p++ = cpu_to_be32(bmval0);

		*p++ = cpu_to_be32(bmval1);

		*p++ = cpu_to_be32(bmval2);

	} else if (bmval1) {

		p = xdr_reserve_space(xdr, 12);

		if (!p)

			goto out_resource;

		*p++ = cpu_to_be32(2);

		*p++ = cpu_to_be32(bmval0);

		*p++ = cpu_to_be32(bmval1);

	} else {

		p = xdr_reserve_space(xdr, 8);

		if (!p)

			goto out_resource;

		*p++ = cpu_to_be32(1);

		*p++ = cpu_to_be32(bmval0);

	}

	status = nfsd4_encode_bitmap(xdr, bmval0, bmval1, bmval2);

	if (status)

		goto out;



	attrlen_offset = xdr->buf->len;

	p = xdr_reserve_space(xdr, 4);
@@ -2736,13 +2750,11 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, 
	}

#endif /* CONFIG_NFSD_PNFS */

	if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {

		p = xdr_reserve_space(xdr, 16);

		if (!p)

			goto out_resource;

		*p++ = cpu_to_be32(3);

		*p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD0);

		*p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD1);

		*p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD2);

		status = nfsd4_encode_bitmap(xdr, NFSD_SUPPATTR_EXCLCREAT_WORD0,

						  NFSD_SUPPATTR_EXCLCREAT_WORD1,

						  NFSD_SUPPATTR_EXCLCREAT_WORD2);

		if (status)

			goto out;

	}



	if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) {
@@ -3069,13 +3081,12 @@ nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_ 
	__be32 *p;



	if (!nfserr) {

		p = xdr_reserve_space(xdr, 32);

		p = xdr_reserve_space(xdr, 20);

		if (!p)

			return nfserr_resource;

		p = encode_cinfo(p, &create->cr_cinfo);

		*p++ = cpu_to_be32(2);

		*p++ = cpu_to_be32(create->cr_bmval[0]);

		*p++ = cpu_to_be32(create->cr_bmval[1]);

		encode_cinfo(p, &create->cr_cinfo);

		nfserr = nfsd4_encode_bitmap(xdr, create->cr_bmval[0],

				create->cr_bmval[1], create->cr_bmval[2]);

	}

	return nfserr;

}
@@ -3215,16 +3226,22 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op 
	nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid);

	if (nfserr)

		goto out;

	p = xdr_reserve_space(xdr, 40);

	p = xdr_reserve_space(xdr, 24);

	if (!p)

		return nfserr_resource;

	p = encode_cinfo(p, &open->op_cinfo);

	*p++ = cpu_to_be32(open->op_rflags);

	*p++ = cpu_to_be32(2);

	*p++ = cpu_to_be32(open->op_bmval[0]);

	*p++ = cpu_to_be32(open->op_bmval[1]);

	*p++ = cpu_to_be32(open->op_delegate_type);



	nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1],

					open->op_bmval[2]);

	if (nfserr)

		goto out;



	p = xdr_reserve_space(xdr, 4);

	if (!p)

		return nfserr_resource;



	*p++ = cpu_to_be32(open->op_delegate_type);

	switch (open->op_delegate_type) {

	case NFS4_OPEN_DELEGATE_NONE:

		break;