diff options
Diffstat (limited to 'fs/nfsd')
-rw-r--r-- | fs/nfsd/nfs4proc.c | 110 | ||||
-rw-r--r-- | fs/nfsd/nfs4xdr.c | 326 | ||||
-rw-r--r-- | fs/nfsd/nfssvc.c | 2 | ||||
-rw-r--r-- | fs/nfsd/xdr4.h | 49 |
4 files changed, 212 insertions, 275 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index d27e75ad25e3..3c69db7d4905 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -784,6 +784,14 @@ out: return status; } + +static void +nfsd4_read_release(union nfsd4_op_u *u) +{ + if (u->read.rd_filp) + fput(u->read.rd_filp); +} + static __be32 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) @@ -912,6 +920,13 @@ nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstat return nfs_ok; } +static void +nfsd4_secinfo_release(union nfsd4_op_u *u) +{ + if (u->secinfo.si_exp) + exp_put(u->secinfo.si_exp); +} + static __be32 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) @@ -1335,6 +1350,12 @@ out: return nfserr; } +static void +nfsd4_getdeviceinfo_release(union nfsd4_op_u *u) +{ + kfree(u->getdeviceinfo.gd_device); +} + static __be32 nfsd4_layoutget(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) @@ -1415,6 +1436,12 @@ out: return nfserr; } +static void +nfsd4_layoutget_release(union nfsd4_op_u *u) +{ + kfree(u->layoutget.lg_content); +} + static __be32 nfsd4_layoutcommit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) @@ -1541,49 +1568,6 @@ static inline void nfsd4_increment_op_stats(u32 opnum) nfsdstats.nfs4_opcount[opnum]++; } -enum nfsd4_op_flags { - ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ - ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ - ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ - /* For rfc 5661 section 2.6.3.1.1: */ - OP_HANDLES_WRONGSEC = 1 << 3, - OP_IS_PUTFH_LIKE = 1 << 4, - /* - * These are the ops whose result size we estimate before - * encoding, to avoid performing an op then not being able to - * respond or cache a response. This includes writes and setattrs - * as well as the operations usually called "nonidempotent": - */ - OP_MODIFIES_SOMETHING = 1 << 5, - /* - * Cache compounds containing these ops in the xid-based drc: - * We use the DRC for compounds containing non-idempotent - * operations, *except* those that are 4.1-specific (since - * sessions provide their own EOS), and except for stateful - * operations other than setclientid and setclientid_confirm - * (since sequence numbers provide EOS for open, lock, etc in - * the v4.0 case). - */ - OP_CACHEME = 1 << 6, - /* - * These are ops which clear current state id. - */ - OP_CLEAR_STATEID = 1 << 7, -}; - -struct nfsd4_operation { - __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *, - union nfsd4_op_u *); - u32 op_flags; - char *op_name; - /* Try to get response size before operation */ - u32 (*op_rsize_bop)(struct svc_rqst *, struct nfsd4_op *); - void (*op_get_currentstateid)(struct nfsd4_compound_state *, - union nfsd4_op_u *); - void (*op_set_currentstateid)(struct nfsd4_compound_state *, - union nfsd4_op_u *); -}; - static const struct nfsd4_operation nfsd4_ops[]; static const char *nfsd4_op_name(unsigned opnum); @@ -1621,7 +1605,7 @@ static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) return nfs_ok; } -static inline const struct nfsd4_operation *OPDESC(struct nfsd4_op *op) +const struct nfsd4_operation *OPDESC(struct nfsd4_op *op) { return &nfsd4_ops[op->opnum]; } @@ -1694,7 +1678,6 @@ nfsd4_proc_compound(struct svc_rqst *rqstp) struct nfsd4_compoundargs *args = rqstp->rq_argp; struct nfsd4_compoundres *resp = rqstp->rq_resp; struct nfsd4_op *op; - const struct nfsd4_operation *opdesc; struct nfsd4_compound_state *cstate = &resp->cstate; struct svc_fh *current_fh = &cstate->current_fh; struct svc_fh *save_fh = &cstate->save_fh; @@ -1747,15 +1730,13 @@ nfsd4_proc_compound(struct svc_rqst *rqstp) goto encode_op; } - opdesc = OPDESC(op); - if (!current_fh->fh_dentry) { - if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { + if (!(op->opdesc->op_flags & ALLOWED_WITHOUT_FH)) { op->status = nfserr_nofilehandle; goto encode_op; } } else if (current_fh->fh_export->ex_fslocs.migrated && - !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { + !(op->opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { op->status = nfserr_moved; goto encode_op; } @@ -1763,12 +1744,12 @@ nfsd4_proc_compound(struct svc_rqst *rqstp) fh_clear_wcc(current_fh); /* If op is non-idempotent */ - if (opdesc->op_flags & OP_MODIFIES_SOMETHING) { + if (op->opdesc->op_flags & OP_MODIFIES_SOMETHING) { /* * Don't execute this op if we couldn't encode a * succesful reply: */ - u32 plen = opdesc->op_rsize_bop(rqstp, op); + u32 plen = op->opdesc->op_rsize_bop(rqstp, op); /* * Plus if there's another operation, make sure * we'll have space to at least encode an error: @@ -1781,9 +1762,9 @@ nfsd4_proc_compound(struct svc_rqst *rqstp) if (op->status) goto encode_op; - if (opdesc->op_get_currentstateid) - opdesc->op_get_currentstateid(cstate, &op->u); - op->status = opdesc->op_func(rqstp, cstate, &op->u); + if (op->opdesc->op_get_currentstateid) + op->opdesc->op_get_currentstateid(cstate, &op->u); + op->status = op->opdesc->op_func(rqstp, cstate, &op->u); /* Only from SEQUENCE */ if (cstate->status == nfserr_replay_cache) { @@ -1792,10 +1773,10 @@ nfsd4_proc_compound(struct svc_rqst *rqstp) goto out; } if (!op->status) { - if (opdesc->op_set_currentstateid) - opdesc->op_set_currentstateid(cstate, &op->u); + if (op->opdesc->op_set_currentstateid) + op->opdesc->op_set_currentstateid(cstate, &op->u); - if (opdesc->op_flags & OP_CLEAR_STATEID) + if (op->opdesc->op_flags & OP_CLEAR_STATEID) clear_current_stateid(cstate); if (need_wrongsec_check(rqstp)) @@ -2160,13 +2141,15 @@ static const struct nfsd4_operation nfsd4_ops[] = { }, [OP_LOCK] = { .op_func = nfsd4_lock, - .op_flags = OP_MODIFIES_SOMETHING, + .op_flags = OP_MODIFIES_SOMETHING | + OP_NONTRIVIAL_ERROR_ENCODE, .op_name = "OP_LOCK", .op_rsize_bop = nfsd4_lock_rsize, .op_set_currentstateid = nfsd4_set_lockstateid, }, [OP_LOCKT] = { .op_func = nfsd4_lockt, + .op_flags = OP_NONTRIVIAL_ERROR_ENCODE, .op_name = "OP_LOCKT", .op_rsize_bop = nfsd4_lock_rsize, }, @@ -2238,6 +2221,7 @@ static const struct nfsd4_operation nfsd4_ops[] = { }, [OP_READ] = { .op_func = nfsd4_read, + .op_release = nfsd4_read_release, .op_name = "OP_READ", .op_rsize_bop = nfsd4_read_rsize, .op_get_currentstateid = nfsd4_get_readstateid, @@ -2287,6 +2271,7 @@ static const struct nfsd4_operation nfsd4_ops[] = { }, [OP_SECINFO] = { .op_func = nfsd4_secinfo, + .op_release = nfsd4_secinfo_release, .op_flags = OP_HANDLES_WRONGSEC, .op_name = "OP_SECINFO", .op_rsize_bop = nfsd4_secinfo_rsize, @@ -2294,14 +2279,16 @@ static const struct nfsd4_operation nfsd4_ops[] = { [OP_SETATTR] = { .op_func = nfsd4_setattr, .op_name = "OP_SETATTR", - .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, + .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME + | OP_NONTRIVIAL_ERROR_ENCODE, .op_rsize_bop = nfsd4_setattr_rsize, .op_get_currentstateid = nfsd4_get_setattrstateid, }, [OP_SETCLIENTID] = { .op_func = nfsd4_setclientid, .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS - | OP_MODIFIES_SOMETHING | OP_CACHEME, + | OP_MODIFIES_SOMETHING | OP_CACHEME + | OP_NONTRIVIAL_ERROR_ENCODE, .op_name = "OP_SETCLIENTID", .op_rsize_bop = nfsd4_setclientid_rsize, }, @@ -2388,6 +2375,7 @@ static const struct nfsd4_operation nfsd4_ops[] = { }, [OP_SECINFO_NO_NAME] = { .op_func = nfsd4_secinfo_no_name, + .op_release = nfsd4_secinfo_release, .op_flags = OP_HANDLES_WRONGSEC, .op_name = "OP_SECINFO_NO_NAME", .op_rsize_bop = nfsd4_secinfo_rsize, @@ -2408,12 +2396,14 @@ static const struct nfsd4_operation nfsd4_ops[] = { #ifdef CONFIG_NFSD_PNFS [OP_GETDEVICEINFO] = { .op_func = nfsd4_getdeviceinfo, + .op_release = nfsd4_getdeviceinfo_release, .op_flags = ALLOWED_WITHOUT_FH, .op_name = "OP_GETDEVICEINFO", .op_rsize_bop = nfsd4_getdeviceinfo_rsize, }, [OP_LAYOUTGET] = { .op_func = nfsd4_layoutget, + .op_release = nfsd4_layoutget_release, .op_flags = OP_MODIFIES_SOMETHING, .op_name = "OP_LAYOUTGET", .op_rsize_bop = nfsd4_layoutget_rsize, diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 5f940d2a136b..08691fe394b2 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1778,7 +1778,7 @@ nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); -static nfsd4_dec nfsd4_dec_ops[] = { +static const nfsd4_dec nfsd4_dec_ops[] = { [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, @@ -1927,6 +1927,7 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp) op->opnum = OP_ILLEGAL; op->status = nfserr_op_illegal; } + op->opdesc = OPDESC(op); /* * We'll try to cache the result in the DRC if any one * op in the compound wants to be cached: @@ -3102,14 +3103,12 @@ nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_ struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, 8); - if (!p) - return nfserr_resource; - *p++ = cpu_to_be32(access->ac_supported); - *p++ = cpu_to_be32(access->ac_resp_access); - } - return nfserr; + p = xdr_reserve_space(xdr, 8); + if (!p) + return nfserr_resource; + *p++ = cpu_to_be32(access->ac_supported); + *p++ = cpu_to_be32(access->ac_resp_access); + return 0; } static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) @@ -3117,17 +3116,15 @@ static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); - if (!p) - return nfserr_resource; - p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, - NFS4_MAX_SESSIONID_LEN); - *p++ = cpu_to_be32(bcts->dir); - /* Upshifting from TCP to RDMA is not supported */ - *p++ = cpu_to_be32(0); - } - return nfserr; + p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); + if (!p) + return nfserr_resource; + p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, + NFS4_MAX_SESSIONID_LEN); + *p++ = cpu_to_be32(bcts->dir); + /* Upshifting from TCP to RDMA is not supported */ + *p++ = cpu_to_be32(0); + return 0; } static __be32 @@ -3135,10 +3132,7 @@ nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_c { struct xdr_stream *xdr = &resp->xdr; - if (!nfserr) - nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid); - - return nfserr; + return nfsd4_encode_stateid(xdr, &close->cl_stateid); } @@ -3148,14 +3142,12 @@ nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_ struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); - if (!p) - return nfserr_resource; - p = xdr_encode_opaque_fixed(p, commit->co_verf.data, + p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); + if (!p) + return nfserr_resource; + p = xdr_encode_opaque_fixed(p, commit->co_verf.data, NFS4_VERIFIER_SIZE); - } - return nfserr; + return 0; } static __be32 @@ -3164,15 +3156,13 @@ nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_ struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, 20); - if (!p) - return nfserr_resource; - 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; + p = xdr_reserve_space(xdr, 20); + if (!p) + return nfserr_resource; + encode_cinfo(p, &create->cr_cinfo); + nfserr = nfsd4_encode_bitmap(xdr, create->cr_bmval[0], + create->cr_bmval[1], create->cr_bmval[2]); + return 0; } static __be32 @@ -3181,13 +3171,8 @@ nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 struct svc_fh *fhp = getattr->ga_fhp; struct xdr_stream *xdr = &resp->xdr; - if (nfserr) - return nfserr; - - nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, - getattr->ga_bmval, - resp->rqstp, 0); - return nfserr; + return nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, + getattr->ga_bmval, resp->rqstp, 0); } static __be32 @@ -3198,14 +3183,12 @@ nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh unsigned int len; __be32 *p; - if (!nfserr) { - len = fhp->fh_handle.fh_size; - p = xdr_reserve_space(xdr, len + 4); - if (!p) - return nfserr_resource; - p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); - } - return nfserr; + len = fhp->fh_handle.fh_size; + p = xdr_reserve_space(xdr, len + 4); + if (!p) + return nfserr_resource; + p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); + return 0; } /* @@ -3275,10 +3258,7 @@ nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_l { struct xdr_stream *xdr = &resp->xdr; - if (!nfserr) - nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid); - - return nfserr; + return nfsd4_encode_stateid(xdr, &locku->lu_stateid); } @@ -3288,13 +3268,11 @@ nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_li struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, 20); - if (!p) - return nfserr_resource; - p = encode_cinfo(p, &link->li_cinfo); - } - return nfserr; + p = xdr_reserve_space(xdr, 20); + if (!p) + return nfserr_resource; + p = encode_cinfo(p, &link->li_cinfo); + return 0; } @@ -3304,12 +3282,9 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (nfserr) - goto out; - nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); if (nfserr) - goto out; + return nfserr; p = xdr_reserve_space(xdr, 24); if (!p) return nfserr_resource; @@ -3319,7 +3294,7 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1], open->op_bmval[2]); if (nfserr) - goto out; + return nfserr; p = xdr_reserve_space(xdr, 4); if (!p) @@ -3392,8 +3367,7 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op BUG(); } /* XXX save filehandle here */ -out: - return nfserr; + return 0; } static __be32 @@ -3401,10 +3375,7 @@ nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct { struct xdr_stream *xdr = &resp->xdr; - if (!nfserr) - nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); - - return nfserr; + return nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); } static __be32 @@ -3412,10 +3383,7 @@ nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struc { struct xdr_stream *xdr = &resp->xdr; - if (!nfserr) - nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid); - - return nfserr; + return nfsd4_encode_stateid(xdr, &od->od_stateid); } static __be32 nfsd4_encode_splice_read( @@ -3552,20 +3520,15 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, struct raparms *ra = NULL; __be32 *p; - if (nfserr) - goto out; - p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ if (!p) { WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); - nfserr = nfserr_resource; - goto out; + return nfserr_resource; } if (resp->xdr.buf->page_len && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { WARN_ON_ONCE(1); - nfserr = nfserr_resource; - goto out; + return nfserr_resource; } xdr_commit_encode(xdr); @@ -3589,9 +3552,6 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, if (nfserr) xdr_truncate_encode(xdr, starting_len); -out: - if (file) - fput(file); return nfserr; } @@ -3605,9 +3565,6 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd int length_offset = xdr->buf->len; __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(xdr, 4); if (!p) return nfserr_resource; @@ -3651,9 +3608,6 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 int starting_len = xdr->buf->len; __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); if (!p) return nfserr_resource; @@ -3739,13 +3693,11 @@ nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_ struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, 20); - if (!p) - return nfserr_resource; - p = encode_cinfo(p, &remove->rm_cinfo); - } - return nfserr; + p = xdr_reserve_space(xdr, 20); + if (!p) + return nfserr_resource; + p = encode_cinfo(p, &remove->rm_cinfo); + return 0; } static __be32 @@ -3754,19 +3706,16 @@ nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_ struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, 40); - if (!p) - return nfserr_resource; - p = encode_cinfo(p, &rename->rn_sinfo); - p = encode_cinfo(p, &rename->rn_tinfo); - } - return nfserr; + p = xdr_reserve_space(xdr, 40); + if (!p) + return nfserr_resource; + p = encode_cinfo(p, &rename->rn_sinfo); + p = encode_cinfo(p, &rename->rn_tinfo); + return 0; } static __be32 -nfsd4_do_encode_secinfo(struct xdr_stream *xdr, - __be32 nfserr, struct svc_export *exp) +nfsd4_do_encode_secinfo(struct xdr_stream *xdr, struct svc_export *exp) { u32 i, nflavs, supported; struct exp_flavor_info *flavs; @@ -3774,9 +3723,6 @@ nfsd4_do_encode_secinfo(struct xdr_stream *xdr, __be32 *p, *flavorsp; static bool report = true; - if (nfserr) - goto out; - nfserr = nfserr_resource; if (exp->ex_nflavors) { flavs = exp->ex_flavors; nflavs = exp->ex_nflavors; @@ -3800,7 +3746,7 @@ nfsd4_do_encode_secinfo(struct xdr_stream *xdr, supported = 0; p = xdr_reserve_space(xdr, 4); if (!p) - goto out; + return nfserr_resource; flavorsp = p++; /* to be backfilled later */ for (i = 0; i < nflavs; i++) { @@ -3812,7 +3758,7 @@ nfsd4_do_encode_secinfo(struct xdr_stream *xdr, p = xdr_reserve_space(xdr, 4 + 4 + XDR_LEN(info.oid.len) + 4 + 4); if (!p) - goto out; + return nfserr_resource; *p++ = cpu_to_be32(RPC_AUTH_GSS); p = xdr_encode_opaque(p, info.oid.data, info.oid.len); *p++ = cpu_to_be32(info.qop); @@ -3821,7 +3767,7 @@ nfsd4_do_encode_secinfo(struct xdr_stream *xdr, supported++; p = xdr_reserve_space(xdr, 4); if (!p) - goto out; + return nfserr_resource; *p++ = cpu_to_be32(pf); } else { if (report) @@ -3833,11 +3779,7 @@ nfsd4_do_encode_secinfo(struct xdr_stream *xdr, if (nflavs != supported) report = false; *flavorsp = htonl(supported); - nfserr = 0; -out: - if (exp) - exp_put(exp); - return nfserr; + return 0; } static __be32 @@ -3846,7 +3788,7 @@ nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, { struct xdr_stream *xdr = &resp->xdr; - return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp); + return nfsd4_do_encode_secinfo(xdr, secinfo->si_exp); } static __be32 @@ -3855,7 +3797,7 @@ nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, { struct xdr_stream *xdr = &resp->xdr; - return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp); + return nfsd4_do_encode_secinfo(xdr, secinfo->sin_exp); } /* @@ -3916,16 +3858,14 @@ nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_w struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (!nfserr) { - p = xdr_reserve_space(xdr, 16); - if (!p) - return nfserr_resource; - *p++ = cpu_to_be32(write->wr_bytes_written); - *p++ = cpu_to_be32(write->wr_how_written); - p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, - NFS4_VERIFIER_SIZE); - } - return nfserr; + p = xdr_reserve_space(xdr, 16); + if (!p) + return nfserr_resource; + *p++ = cpu_to_be32(write->wr_bytes_written); + *p++ = cpu_to_be32(write->wr_how_written); + p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, + NFS4_VERIFIER_SIZE); + return 0; } static __be32 @@ -3938,12 +3878,8 @@ nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, char *server_scope; int major_id_sz; int server_scope_sz; - int status = 0; uint64_t minor_id = 0; - if (nfserr) - return nfserr; - major_id = utsname()->nodename; major_id_sz = strlen(major_id); server_scope = utsname()->nodename; @@ -3968,19 +3904,19 @@ nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, break; case SP4_MACH_CRED: /* spo_must_enforce bitmap: */ - status = nfsd4_encode_bitmap(xdr, + nfserr = nfsd4_encode_bitmap(xdr, exid->spo_must_enforce[0], exid->spo_must_enforce[1], exid->spo_must_enforce[2]); - if (status) - goto out; + if (nfserr) + return nfserr; /* spo_must_allow bitmap: */ - status = nfsd4_encode_bitmap(xdr, + nfserr = nfsd4_encode_bitmap(xdr, exid->spo_must_allow[0], exid->spo_must_allow[1], exid->spo_must_allow[2]); - if (status) - goto out; + if (nfserr) + return nfserr; break; default: WARN_ON_ONCE(1); @@ -4007,8 +3943,6 @@ nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, /* Implementation id */ *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ return 0; -out: - return status; } static __be32 @@ -4018,9 +3952,6 @@ nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(xdr, 24); if (!p) return nfserr_resource; @@ -4074,9 +4005,6 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); if (!p) return nfserr_resource; @@ -4101,9 +4029,6 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_test_stateid_id *stateid, *next; __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); if (!p) return nfserr_resource; @@ -4113,7 +4038,7 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, *p++ = stateid->ts_id_status; } - return nfserr; + return 0; } #ifdef CONFIG_NFSD_PNFS @@ -4126,14 +4051,9 @@ nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, u32 starting_len = xdr->buf->len, needed_len; __be32 *p; - dprintk("%s: err %d\n", __func__, be32_to_cpu(nfserr)); - if (nfserr) - goto out; - - nfserr = nfserr_resource; p = xdr_reserve_space(xdr, 4); if (!p) - goto out; + return nfserr_resource; *p++ = cpu_to_be32(gdev->gd_layout_type); @@ -4149,42 +4069,33 @@ nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, */ if (xdr->buf->len + 4 > gdev->gd_maxcount) goto toosmall; - goto out; + return nfserr; } } - nfserr = nfserr_resource; if (gdev->gd_notify_types) { p = xdr_reserve_space(xdr, 4 + 4); if (!p) - goto out; + return nfserr_resource; *p++ = cpu_to_be32(1); /* bitmap length */ *p++ = cpu_to_be32(gdev->gd_notify_types); } else { p = xdr_reserve_space(xdr, 4); if (!p) - goto out; + return nfserr_resource; *p++ = 0; } - nfserr = 0; -out: - kfree(gdev->gd_device); - dprintk("%s: done: %d\n", __func__, be32_to_cpu(nfserr)); - return nfserr; - + return 0; toosmall: dprintk("%s: maxcount too small\n", __func__); needed_len = xdr->buf->len + 4 /* notifications */; xdr_truncate_encode(xdr, starting_len); p = xdr_reserve_space(xdr, 4); - if (!p) { - nfserr = nfserr_resource; - } else { - *p++ = cpu_to_be32(needed_len); - nfserr = nfserr_toosmall; - } - goto out; + if (!p) + return nfserr_resource; + *p++ = cpu_to_be32(needed_len); + return nfserr_toosmall; } static __be32 @@ -4195,14 +4106,9 @@ nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, const struct nfsd4_layout_ops *ops; __be32 *p; - dprintk("%s: err %d\n", __func__, nfserr); - if (nfserr) - goto out; - - nfserr = nfserr_resource; p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); if (!p) - goto out; + return nfserr_resource; *p++ = cpu_to_be32(1); /* we always set return-on-close */ *p++ = cpu_to_be32(lgp->lg_sid.si_generation); @@ -4216,10 +4122,7 @@ nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, *p++ = cpu_to_be32(lgp->lg_layout_type); ops = nfsd4_layout_ops[lgp->lg_layout_type]; - nfserr = ops->encode_layoutget(xdr, lgp); -out: - kfree(lgp->lg_content); - return nfserr; + return ops->encode_layoutget(xdr, lgp); } static __be32 @@ -4229,9 +4132,6 @@ nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(xdr, 4); if (!p) return nfserr_resource; @@ -4243,7 +4143,7 @@ nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, p = xdr_encode_hyper(p, lcp->lc_newsize); } - return nfs_ok; + return 0; } static __be32 @@ -4253,16 +4153,13 @@ nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, struct xdr_stream *xdr = &resp->xdr; __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(xdr, 4); if (!p) return nfserr_resource; *p++ = cpu_to_be32(lrp->lrs_present); if (lrp->lrs_present) return nfsd4_encode_stateid(xdr, &lrp->lr_sid); - return nfs_ok; + return 0; } #endif /* CONFIG_NFSD_PNFS */ @@ -4289,16 +4186,14 @@ nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr, { __be32 *p; - if (!nfserr) { - nfserr = nfsd42_encode_write_res(resp, ©->cp_res); - if (nfserr) - return nfserr; + nfserr = nfsd42_encode_write_res(resp, ©->cp_res); + if (nfserr) + return nfserr; - p = xdr_reserve_space(&resp->xdr, 4 + 4); - *p++ = cpu_to_be32(copy->cp_consecutive); - *p++ = cpu_to_be32(copy->cp_synchronous); - } - return nfserr; + p = xdr_reserve_space(&resp->xdr, 4 + 4); + *p++ = cpu_to_be32(copy->cp_consecutive); + *p++ = cpu_to_be32(copy->cp_synchronous); + return 0; } static __be32 @@ -4307,14 +4202,11 @@ nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, { __be32 *p; - if (nfserr) - return nfserr; - p = xdr_reserve_space(&resp->xdr, 4 + 8); *p++ = cpu_to_be32(seek->seek_eof); p = xdr_encode_hyper(p, seek->seek_pos); - return nfserr; + return 0; } static __be32 @@ -4330,7 +4222,7 @@ typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); * since we don't need to filter out obsolete ops as this is * done in the decoding phase. */ -static nfsd4_enc nfsd4_enc_ops[] = { +static const 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, @@ -4449,6 +4341,7 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) struct xdr_stream *xdr = &resp->xdr; struct nfs4_stateowner *so = resp->cstate.replay_owner; struct svc_rqst *rqstp = resp->rqstp; + const struct nfsd4_operation *opdesc = op->opdesc; int post_err_offset; nfsd4_enc encoder; __be32 *p; @@ -4463,10 +4356,15 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) if (op->opnum == OP_ILLEGAL) goto status; + if (op->status && opdesc && + !(opdesc->op_flags & OP_NONTRIVIAL_ERROR_ENCODE)) + goto status; BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || !nfsd4_enc_ops[op->opnum]); encoder = nfsd4_enc_ops[op->opnum]; op->status = encoder(resp, op->status, &op->u); + if (opdesc && opdesc->op_release) + opdesc->op_release(&op->u); xdr_commit_encode(xdr); /* nfsd4_check_resp_size guarantees enough room for error status */ diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index 063ae7de2c12..7e3af3ef0917 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -475,7 +475,7 @@ static int nfsd_get_default_max_blksize(void) return ret; } -static struct svc_serv_ops nfsd_thread_sv_ops = { +static const struct svc_serv_ops nfsd_thread_sv_ops = { .svo_shutdown = nfsd_last_thread, .svo_function = nfsd, .svo_enqueue_xprt = svc_xprt_do_enqueue, diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 72c6ad136107..f8a0b6549a88 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -538,6 +538,7 @@ struct nfsd4_seek { struct nfsd4_op { int opnum; + const struct nfsd4_operation * opdesc; __be32 status; union nfsd4_op_u { struct nfsd4_access access; @@ -661,6 +662,7 @@ static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp) return argp->opcnt == resp->opcnt; } +const struct nfsd4_operation *OPDESC(struct nfsd4_op *op); int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op); void warn_on_nonidempotent_op(struct nfsd4_op *op); @@ -748,6 +750,53 @@ extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *, union nfsd4_op_u *); extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr); +enum nfsd4_op_flags { + ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ + ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ + ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ + /* For rfc 5661 section 2.6.3.1.1: */ + OP_HANDLES_WRONGSEC = 1 << 3, + OP_IS_PUTFH_LIKE = 1 << 4, + /* + * These are the ops whose result size we estimate before + * encoding, to avoid performing an op then not being able to + * respond or cache a response. This includes writes and setattrs + * as well as the operations usually called "nonidempotent": + */ + OP_MODIFIES_SOMETHING = 1 << 5, + /* + * Cache compounds containing these ops in the xid-based drc: + * We use the DRC for compounds containing non-idempotent + * operations, *except* those that are 4.1-specific (since + * sessions provide their own EOS), and except for stateful + * operations other than setclientid and setclientid_confirm + * (since sequence numbers provide EOS for open, lock, etc in + * the v4.0 case). + */ + OP_CACHEME = 1 << 6, + /* + * These are ops which clear current state id. + */ + OP_CLEAR_STATEID = 1 << 7, + /* Most ops return only an error on failure; some may do more: */ + OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8, +}; + +struct nfsd4_operation { + __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *, + union nfsd4_op_u *); + void (*op_release)(union nfsd4_op_u *); + u32 op_flags; + char *op_name; + /* Try to get response size before operation */ + u32 (*op_rsize_bop)(struct svc_rqst *, struct nfsd4_op *); + void (*op_get_currentstateid)(struct nfsd4_compound_state *, + union nfsd4_op_u *); + void (*op_set_currentstateid)(struct nfsd4_compound_state *, + union nfsd4_op_u *); +}; + + #endif /* |