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NFSv4: Add a helper for encoding stateids 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2012-03-04 18:13:56 -05:00
parent cb17e556f6
commit ea9d23f510
1 changed files with 62 additions and 51 deletions
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113
fs/nfs/nfs4xdr.c
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@ -928,6 +928,11 @@ static void encode_nops(struct compound_hdr *hdr)
*hdr->nops_p = htonl(hdr->nops);
}
static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
encode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
}
static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
{
encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
@ -1070,10 +1075,10 @@ static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg
{
__be32 *p;
p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
p = reserve_space(xdr, 8);
*p++ = cpu_to_be32(OP_CLOSE);
*p++ = cpu_to_be32(arg->seqid->sequence->counter);
xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
*p = cpu_to_be32(arg->seqid->sequence->counter);
encode_nfs4_stateid(xdr, arg->stateid);
hdr->nops++;
hdr->replen += decode_close_maxsz;
}
@ -1260,15 +1265,16 @@ static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args
p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
*p = cpu_to_be32(args->new_lock_owner);
if (args->new_lock_owner){
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
*p++ = cpu_to_be32(args->open_seqid->sequence->counter);
p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
*p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(args->open_seqid->sequence->counter);
encode_nfs4_stateid(xdr, args->open_stateid);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(args->lock_seqid->sequence->counter);
encode_lockowner(xdr, &args->lock_owner);
}
else {
p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
encode_nfs4_stateid(xdr, args->lock_stateid);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(args->lock_seqid->sequence->counter);
}
hdr->nops++;
@ -1293,11 +1299,12 @@ static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *ar
{
__be32 *p;
p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
p = reserve_space(xdr, 12);
*p++ = cpu_to_be32(OP_LOCKU);
*p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
*p++ = cpu_to_be32(args->seqid->sequence->counter);
p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
*p = cpu_to_be32(args->seqid->sequence->counter);
encode_nfs4_stateid(xdr, args->stateid);
p = reserve_space(xdr, 16);
p = xdr_encode_hyper(p, args->fl->fl_start);
xdr_encode_hyper(p, nfs4_lock_length(args->fl));
hdr->nops++;
@ -1457,9 +1464,9 @@ static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struc
{
__be32 *p;
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
*p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
encode_nfs4_stateid(xdr, stateid);
encode_string(xdr, name->len, name->name);
}
@ -1488,9 +1495,10 @@ static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_co
{
__be32 *p;
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
*p++ = cpu_to_be32(OP_OPEN_CONFIRM);
p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_OPEN_CONFIRM);
encode_nfs4_stateid(xdr, arg->stateid);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(arg->seqid->sequence->counter);
hdr->nops++;
hdr->replen += decode_open_confirm_maxsz;
@ -1500,9 +1508,10 @@ static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_close
{
__be32 *p;
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
*p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_OPEN_DOWNGRADE);
encode_nfs4_stateid(xdr, arg->stateid);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(arg->seqid->sequence->counter);
encode_share_access(xdr, arg->fmode);
hdr->nops++;
@ -1535,16 +1544,14 @@ static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
static void encode_open_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
{
nfs4_stateid stateid;
__be32 *p;
p = reserve_space(xdr, NFS4_STATEID_SIZE);
if (ctx->state != NULL) {
nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
if (zero_seqid)
stateid.stateid.seqid = 0;
xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
encode_nfs4_stateid(xdr, &stateid);
} else
xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
encode_nfs4_stateid(xdr, &zero_stateid);
}
static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
@ -1668,9 +1675,9 @@ encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compoun
{
__be32 *p;
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
*p++ = cpu_to_be32(OP_SETATTR);
xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_SETATTR);
encode_nfs4_stateid(xdr, &zero_stateid);
p = reserve_space(xdr, 2*4);
*p++ = cpu_to_be32(1);
*p = cpu_to_be32(FATTR4_WORD0_ACL);
@ -1697,9 +1704,9 @@ static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs
{
__be32 *p;
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
*p++ = cpu_to_be32(OP_SETATTR);
xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_SETATTR);
encode_nfs4_stateid(xdr, &arg->stateid);
hdr->nops++;
hdr->replen += decode_setattr_maxsz;
encode_attrs(xdr, arg->iap, server);
@ -1760,10 +1767,9 @@ static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *state
{
__be32 *p;
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
*p++ = cpu_to_be32(OP_DELEGRETURN);
xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_DELEGRETURN);
encode_nfs4_stateid(xdr, stateid);
hdr->nops++;
hdr->replen += decode_delegreturn_maxsz;
}
@ -1999,7 +2005,7 @@ encode_layoutget(struct xdr_stream *xdr,
{
__be32 *p;
p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
p = reserve_space(xdr, 40);
*p++ = cpu_to_be32(OP_LAYOUTGET);
*p++ = cpu_to_be32(0); /* Signal layout available */
*p++ = cpu_to_be32(args->type);
@ -2007,7 +2013,8 @@ encode_layoutget(struct xdr_stream *xdr,
p = xdr_encode_hyper(p, args->range.offset);
p = xdr_encode_hyper(p, args->range.length);
p = xdr_encode_hyper(p, args->minlength);
p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(args->maxcount);
dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
@ -2032,13 +2039,14 @@ encode_layoutcommit(struct xdr_stream *xdr,
dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
NFS_SERVER(args->inode)->pnfs_curr_ld->id);
p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
p = reserve_space(xdr, 24);
*p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
/* Only whole file layouts */
p = xdr_encode_hyper(p, 0); /* offset */
p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
*p++ = cpu_to_be32(0); /* reclaim */
p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
*p = cpu_to_be32(0); /* reclaim */
encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 20);
*p++ = cpu_to_be32(1); /* newoffset = TRUE */
p = xdr_encode_hyper(p, args->lastbytewritten);
*p++ = cpu_to_be32(0); /* Never send time_modify_changed */
@ -2070,11 +2078,11 @@ encode_layoutreturn(struct xdr_stream *xdr,
*p++ = cpu_to_be32(args->layout_type);
*p++ = cpu_to_be32(IOMODE_ANY);
*p = cpu_to_be32(RETURN_FILE);
p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE);
p = reserve_space(xdr, 16);
p = xdr_encode_hyper(p, 0);
p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
spin_lock(&args->inode->i_lock);
xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
encode_nfs4_stateid(xdr, &args->stateid);
spin_unlock(&args->inode->i_lock);
if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
@ -2107,10 +2115,10 @@ static void encode_test_stateid(struct xdr_stream *xdr,
{
__be32 *p;
p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE);
p = reserve_space(xdr, 8);
*p++ = cpu_to_be32(OP_TEST_STATEID);
*p++ = cpu_to_be32(1);
xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
*p = cpu_to_be32(1);
encode_nfs4_stateid(xdr, args->stateid);
hdr->nops++;
hdr->replen += decode_test_stateid_maxsz;
}
@ -2120,9 +2128,9 @@ static void encode_free_stateid(struct xdr_stream *xdr,
struct compound_hdr *hdr)
{
__be32 *p;
p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE);
*p++ = cpu_to_be32(OP_FREE_STATEID);
xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_FREE_STATEID);
encode_nfs4_stateid(xdr, args->stateid);
hdr->nops++;
hdr->replen += decode_free_stateid_maxsz;
}
@ -5640,11 +5648,14 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
status = decode_op_hdr(xdr, OP_LAYOUTGET);
if (status)
return status;
p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
res->return_on_close = be32_to_cpup(p);
decode_stateid(xdr, &res->stateid);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
res->return_on_close = be32_to_cpup(p++);
p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
layout_count = be32_to_cpup(p);
if (!layout_count) {
dprintk("%s: server responded with empty layout array\n",