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Commit 695e12f8 authored by Benny Halevy's avatar Benny Halevy Committed by J. Bruce Fields
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nfsd: tabulate nfs4 xdr encoding functions 

In preparation for minorversion 1

All encoders now return an nfserr status (typically their
nfserr argument).  Unsupported ops go through nfsd4_encode_operation
too, so use nfsd4_encode_noop to encode nothing for their reply body.
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent e86322f6
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Showing with 91 additions and 114 deletions
fs/nfsd/nfs4xdr.c
View file @ 695e12f8
......@@ -1950,7 +1950,7 @@ fail:
return -EINVAL;
}
static void
static __be32
nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
{
ENCODE_HEAD;
......@@ -1961,9 +1961,10 @@ nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
WRITE32(access->ac_resp_access);
ADJUST_ARGS();
}
return nfserr;
}
static void
static __be32
nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
{
ENCODE_SEQID_OP_HEAD;
......@@ -1975,10 +1976,11 @@ nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_c
ADJUST_ARGS();
}
ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
return nfserr;
}
static void
static __be32
nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
{
ENCODE_HEAD;
......@@ -1988,9 +1990,10 @@ nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
WRITEMEM(commit->co_verf.data, 8);
ADJUST_ARGS();
}
return nfserr;
}
static void
static __be32
nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
{
ENCODE_HEAD;
......@@ -2003,6 +2006,7 @@ nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
WRITE32(create->cr_bmval[1]);
ADJUST_ARGS();
}
return nfserr;
}
static __be32
......@@ -2023,9 +2027,10 @@ nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
return nfserr;
}
static void
nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh *fhp)
static __be32
nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp)
{
struct svc_fh *fhp = *fhpp;
unsigned int len;
ENCODE_HEAD;
......@@ -2036,6 +2041,7 @@ nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh
WRITEMEM(&fhp->fh_handle.fh_base, len);
ADJUST_ARGS();
}
return nfserr;
}
/*
......@@ -2063,7 +2069,7 @@ nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denie
ADJUST_ARGS();
}
static void
static __be32
nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock)
{
ENCODE_SEQID_OP_HEAD;
......@@ -2077,16 +2083,18 @@ nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lo
nfsd4_encode_lock_denied(resp, &lock->lk_denied);
ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
return nfserr;
}
static void
static __be32
nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt)
{
if (nfserr == nfserr_denied)
nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
return nfserr;
}
static void
static __be32
nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku)
{
ENCODE_SEQID_OP_HEAD;
......@@ -2099,10 +2107,11 @@ nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_l
}
ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
return nfserr;
}
static void
static __be32
nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
{
ENCODE_HEAD;
......@@ -2112,10 +2121,11 @@ nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_li
WRITECINFO(link->li_cinfo);
ADJUST_ARGS();
}
return nfserr;
}
static void
static __be32
nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
{
ENCODE_SEQID_OP_HEAD;
......@@ -2178,9 +2188,10 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op
/* XXX save filehandle here */
out:
ENCODE_SEQID_OP_TAIL(open->op_stateowner);
return nfserr;
}
static void
static __be32
nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
{
ENCODE_SEQID_OP_HEAD;
......@@ -2193,9 +2204,10 @@ nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct
}
ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
return nfserr;
}
static void
static __be32
nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
{
ENCODE_SEQID_OP_HEAD;
......@@ -2208,6 +2220,7 @@ nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struc
}
ENCODE_SEQID_OP_TAIL(od->od_stateowner);
return nfserr;
}
static __be32
......@@ -2402,7 +2415,7 @@ err_no_verf:
return nfserr;
}
static void
static __be32
nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
{
ENCODE_HEAD;
......@@ -2412,9 +2425,10 @@ nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
WRITECINFO(remove->rm_cinfo);
ADJUST_ARGS();
}
return nfserr;
}
static void
static __be32
nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
{
ENCODE_HEAD;
......@@ -2425,9 +2439,10 @@ nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
WRITECINFO(rename->rn_tinfo);
ADJUST_ARGS();
}
return nfserr;
}
static void
static __be32
nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_secinfo *secinfo)
{
......@@ -2491,13 +2506,14 @@ nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
out:
if (exp)
exp_put(exp);
return nfserr;
}
/*
* The SETATTR encode routine is special -- it always encodes a bitmap,
* regardless of the error status.
*/
static void
static __be32
nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
{
ENCODE_HEAD;
......@@ -2514,9 +2530,10 @@ nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
WRITE32(setattr->sa_bmval[1]);
}
ADJUST_ARGS();
return nfserr;
}
static void
static __be32
nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
{
ENCODE_HEAD;
......@@ -2533,9 +2550,10 @@ nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct n
WRITE32(0);
ADJUST_ARGS();
}
return nfserr;
}
static void
static __be32
nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
{
ENCODE_HEAD;
......@@ -2547,8 +2565,56 @@ nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_w
WRITEMEM(write->wr_verifier.data, 8);
ADJUST_ARGS();
}
return nfserr;
}
static __be32
nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
{
return nfserr;
}
typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
static nfsd4_enc nfsd4_enc_ops[] = {
[OP_ACCESS] (nfsd4_enc)nfsd4_encode_access,
[OP_CLOSE] (nfsd4_enc)nfsd4_encode_close,
[OP_COMMIT] (nfsd4_enc)nfsd4_encode_commit,
[OP_CREATE] (nfsd4_enc)nfsd4_encode_create,
[OP_DELEGPURGE] (nfsd4_enc)nfsd4_encode_noop,
[OP_DELEGRETURN] (nfsd4_enc)nfsd4_encode_noop,
[OP_GETATTR] (nfsd4_enc)nfsd4_encode_getattr,
[OP_GETFH] (nfsd4_enc)nfsd4_encode_getfh,
[OP_LINK] (nfsd4_enc)nfsd4_encode_link,
[OP_LOCK] (nfsd4_enc)nfsd4_encode_lock,
[OP_LOCKT] (nfsd4_enc)nfsd4_encode_lockt,
[OP_LOCKU] (nfsd4_enc)nfsd4_encode_locku,
[OP_LOOKUP] (nfsd4_enc)nfsd4_encode_noop,
[OP_LOOKUPP] (nfsd4_enc)nfsd4_encode_noop,
[OP_NVERIFY] (nfsd4_enc)nfsd4_encode_noop,
[OP_OPEN] (nfsd4_enc)nfsd4_encode_open,
[OP_OPEN_CONFIRM] (nfsd4_enc)nfsd4_encode_open_confirm,
[OP_OPEN_DOWNGRADE] (nfsd4_enc)nfsd4_encode_open_downgrade,
[OP_PUTFH] (nfsd4_enc)nfsd4_encode_noop,
[OP_PUTPUBFH] (nfsd4_enc)nfsd4_encode_noop,
[OP_PUTROOTFH] (nfsd4_enc)nfsd4_encode_noop,
[OP_READ] (nfsd4_enc)nfsd4_encode_read,
[OP_READDIR] (nfsd4_enc)nfsd4_encode_readdir,
[OP_READLINK] (nfsd4_enc)nfsd4_encode_readlink,
[OP_REMOVE] (nfsd4_enc)nfsd4_encode_remove,
[OP_RENAME] (nfsd4_enc)nfsd4_encode_rename,
[OP_RENEW] (nfsd4_enc)nfsd4_encode_noop,
[OP_RESTOREFH] (nfsd4_enc)nfsd4_encode_noop,
[OP_SAVEFH] (nfsd4_enc)nfsd4_encode_noop,
[OP_SECINFO] (nfsd4_enc)nfsd4_encode_secinfo,
[OP_SETATTR] (nfsd4_enc)nfsd4_encode_setattr,
[OP_SETCLIENTID] (nfsd4_enc)nfsd4_encode_setclientid,
[OP_SETCLIENTID_CONFIRM](nfsd4_enc)nfsd4_encode_noop,
[OP_VERIFY] (nfsd4_enc)nfsd4_encode_noop,
[OP_WRITE] (nfsd4_enc)nfsd4_encode_write,
[OP_RELEASE_LOCKOWNER] (nfsd4_enc)nfsd4_encode_noop,
};
void
nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
......@@ -2560,101 +2626,12 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
statp = p++; /* to be backfilled at the end */
ADJUST_ARGS();
switch (op->opnum) {
case OP_ACCESS:
nfsd4_encode_access(resp, op->status, &op->u.access);
break;
case OP_CLOSE:
nfsd4_encode_close(resp, op->status, &op->u.close);
break;
case OP_COMMIT:
nfsd4_encode_commit(resp, op->status, &op->u.commit);
break;
case OP_CREATE:
nfsd4_encode_create(resp, op->status, &op->u.create);
break;
case OP_DELEGRETURN:
break;
case OP_GETATTR:
op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr);
break;
case OP_GETFH:
nfsd4_encode_getfh(resp, op->status, op->u.getfh);
break;
case OP_LINK:
nfsd4_encode_link(resp, op->status, &op->u.link);
break;
case OP_LOCK:
nfsd4_encode_lock(resp, op->status, &op->u.lock);
break;
case OP_LOCKT:
nfsd4_encode_lockt(resp, op->status, &op->u.lockt);
break;
case OP_LOCKU:
nfsd4_encode_locku(resp, op->status, &op->u.locku);
break;
case OP_LOOKUP:
break;
case OP_LOOKUPP:
break;
case OP_NVERIFY:
break;
case OP_OPEN:
nfsd4_encode_open(resp, op->status, &op->u.open);
break;
case OP_OPEN_CONFIRM:
nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm);
break;
case OP_OPEN_DOWNGRADE:
nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade);
break;
case OP_PUTFH:
break;
case OP_PUTROOTFH:
break;
case OP_READ:
op->status = nfsd4_encode_read(resp, op->status, &op->u.read);
break;
case OP_READDIR:
op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir);
break;
case OP_READLINK:
op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink);
break;
case OP_REMOVE:
nfsd4_encode_remove(resp, op->status, &op->u.remove);
break;
case OP_RENAME:
nfsd4_encode_rename(resp, op->status, &op->u.rename);
break;
case OP_RENEW:
break;
case OP_RESTOREFH:
break;
case OP_SAVEFH:
break;
case OP_SECINFO:
nfsd4_encode_secinfo(resp, op->status, &op->u.secinfo);
break;
case OP_SETATTR:
nfsd4_encode_setattr(resp, op->status, &op->u.setattr);
break;
case OP_SETCLIENTID:
nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid);
break;
case OP_SETCLIENTID_CONFIRM:
break;
case OP_VERIFY:
break;
case OP_WRITE:
nfsd4_encode_write(resp, op->status, &op->u.write);
break;
case OP_RELEASE_LOCKOWNER:
break;
default:
break;
}
if (op->opnum == OP_ILLEGAL)
goto status;
BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) ||
!nfsd4_enc_ops[op->opnum]);
op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
status:
/*
* Note: We write the status directly, instead of using WRITE32(),
* since it is already in network byte order.
......
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