From 695e12f8d2917378d3b93059209e17415de96204 Mon Sep 17 00:00:00 2001 From: Benny Halevy Date: Fri, 4 Jul 2008 14:38:33 +0300 Subject: [PATCH] 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: Benny Halevy Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4xdr.c | 205 ++++++++++++++++++++-------------------------- 1 file changed, 91 insertions(+), 114 deletions(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index a40bec53fa66..9b6a9bafc6b4 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -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.