diff options
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 87 | ||||
| -rw-r--r-- | fs/nfsd/state.h | 1 |
2 files changed, 45 insertions, 43 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index aa088bc3b16..ad20bbf0a1f 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3253,7 +3253,6 @@ __be32 nfs4_validate_stateid(stateid_t *stateid, bool has_session) if (!stp) goto out; status = nfserr_bad_stateid; - if (stp->st_stateowner->so_is_open_owner && !openowner(stp->st_stateowner)->oo_confirmed) goto out; @@ -3418,6 +3417,29 @@ setlkflg (int type) RD_STATE : WR_STATE; } +static __be32 nfs4_nospecial_stateid_checks(stateid_t *stateid) +{ + if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) + return nfserr_bad_stateid; + if (STALE_STATEID(stateid)) + return nfserr_stale_stateid; + return nfs_ok; +} + +static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_t *stateid, u32 seqid, struct nfs4_stateid *stp) +{ + struct svc_fh *current_fh = &cstate->current_fh; + struct nfs4_stateowner *sop = stp->st_stateowner; + __be32 status; + + if (nfs4_check_fh(current_fh, stp)) + return nfserr_bad_stateid; + status = nfsd4_check_seqid(cstate, sop, seqid); + if (status) + return status; + return check_stateid_generation(stateid, &stp->st_stateid, nfsd4_has_session(cstate)); +} + /* * Checks for sequence id mutating operations. */ @@ -3426,54 +3448,36 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, stateid_t *stateid, int flags, struct nfs4_stateid **stpp) { - struct nfs4_stateowner *sop; - struct svc_fh *current_fh = &cstate->current_fh; __be32 status; dprintk("NFSD: %s: seqid=%d stateid = " STATEID_FMT "\n", __func__, seqid, STATEID_VAL(stateid)); *stpp = NULL; - - if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) { - dprintk("NFSD: preprocess_seqid_op: magic stateid!\n"); - return nfserr_bad_stateid; - } - - if (STALE_STATEID(stateid)) - return nfserr_stale_stateid; - - /* - * We return BAD_STATEID if filehandle doesn't match stateid, - * the confirmed flag is incorrecly set, or the generation - * number is incorrect. - */ + status = nfs4_nospecial_stateid_checks(stateid); + if (status) + return status; *stpp = find_stateid_by_type(stateid, flags); if (*stpp == NULL) return nfserr_expired; + cstate->replay_owner = (*stpp)->st_stateowner; + renew_client((*stpp)->st_stateowner->so_client); - sop = (*stpp)->st_stateowner; - cstate->replay_owner = sop; + return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp); +} - if (nfs4_check_fh(current_fh, *stpp)) { - dprintk("NFSD: preprocess_seqid_op: fh-stateid mismatch!\n"); - return nfserr_bad_stateid; - } +static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, stateid_t *stateid, struct nfs4_stateid **stpp) +{ + __be32 status; + struct nfs4_openowner *oo; - status = nfsd4_check_seqid(cstate, sop, seqid); + status = nfs4_preprocess_seqid_op(cstate, seqid, stateid, + OPEN_STATE, stpp); if (status) return status; - - if (sop->so_is_open_owner && !openowner(sop)->oo_confirmed - && !(flags & CONFIRM)) { - dprintk("NFSD: preprocess_seqid_op: stateowner not" - " confirmed yet!\n"); + oo = openowner((*stpp)->st_stateowner); + if (!oo->oo_confirmed) return nfserr_bad_stateid; - } - status = check_stateid_generation(stateid, &(*stpp)->st_stateid, nfsd4_has_session(cstate)); - if (status) - return status; - renew_client(sop->so_client); return nfs_ok; } @@ -3497,7 +3501,7 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, status = nfs4_preprocess_seqid_op(cstate, oc->oc_seqid, &oc->oc_req_stateid, - CONFIRM | OPEN_STATE, &stp); + OPEN_STATE, &stp); if (status) goto out; oo = openowner(stp->st_stateowner); @@ -3557,8 +3561,8 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp, return nfserr_inval; nfs4_lock_state(); - status = nfs4_preprocess_seqid_op(cstate, od->od_seqid, - &od->od_stateid, OPEN_STATE, &stp); + status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid, + &od->od_stateid, &stp); if (status) goto out; status = nfserr_inval; @@ -3602,9 +3606,8 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, nfs4_lock_state(); /* check close_lru for replay */ - status = nfs4_preprocess_seqid_op(cstate, close->cl_seqid, - &close->cl_stateid, - OPEN_STATE, &stp); + status = nfs4_preprocess_confirmed_seqid_op(cstate, close->cl_seqid, + &close->cl_stateid, &stp); if (stp == NULL && status == nfserr_expired) { /* * Also, we should make sure this isn't just the result of @@ -3963,10 +3966,10 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, goto out; /* validate and update open stateid and open seqid */ - status = nfs4_preprocess_seqid_op(cstate, + status = nfs4_preprocess_confirmed_seqid_op(cstate, lock->lk_new_open_seqid, &lock->lk_new_open_stateid, - OPEN_STATE, &open_stp); + &open_stp); if (status) goto out; open_sop = openowner(open_stp->st_stateowner); diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 7994ed9be3c..9745cc781e7 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -463,7 +463,6 @@ struct nfs4_stateid { }; /* flags for preprocess_seqid_op() */ -#define CONFIRM 0x00000002 #define OPEN_STATE 0x00000004 #define LOCK_STATE 0x00000008 #define RD_STATE 0x00000010 |