static void update(void) { struct timespec ts; struct conf c; struct dbinfo dbi; unsigned int f, n; char buf[128]; void *ss = &c.c_ss; if (clock_gettime(CLOCK_REALTIME, &ts) == -1) { (*lfun)(LOG_ERR, "clock_gettime failed (%m)"); return; } again: for (n = 0, f = 1; state_iterate(state, &c, &dbi, f) == 1; f = 0, n++) { time_t when = c.c_duration + dbi.last; if (debug > 1) { char b1[64], b2[64]; sockaddr_snprintf(buf, sizeof(buf), "%a:%p", ss); (*lfun)(LOG_DEBUG, "%s:[%u] %s count=%d duration=%d " "last=%s " "now=%s", __func__, n, buf, dbi.count, c.c_duration, fmttime(b1, sizeof(b1), dbi.last), fmttime(b2, sizeof(b2), ts.tv_sec)); } if (c.c_duration == -1 || when >= ts.tv_sec) continue; if (dbi.id[0]) { run_change("rem", &c, dbi.id, 0); sockaddr_snprintf(buf, sizeof(buf), "%a", ss); syslog(LOG_INFO, "released %s/%d:%d after %d seconds", buf, c.c_lmask, c.c_port, c.c_duration); } state_del(state, &c); goto again; } }
int nfs4_op_lock(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp) { char __attribute__ ((__unused__)) funcname[] = "nfs4_op_lock"; #ifndef _WITH_NFSV4_LOCKS /* Lock are not supported */ resp->resop = NFS4_OP_LOCK; res_LOCK4.status = NFS4ERR_LOCK_NOTSUPP; return res_LOCK4.status; #else state_status_t state_status; state_data_t candidate_data; state_type_t candidate_type; int rc = 0; seqid4 seqid; state_t * plock_state; /* state for the lock */ state_t * pstate_open; /* state for the open owner */ state_owner_t * plock_owner; state_owner_t * popen_owner; state_owner_t * presp_owner; /* Owner to store response in */ state_owner_t * conflict_owner = NULL; state_nfs4_owner_name_t owner_name; nfs_client_id_t nfs_client_id; state_lock_desc_t lock_desc, conflict_desc; state_blocking_t blocking = STATE_NON_BLOCKING; const char * tag = "LOCK"; LogDebug(COMPONENT_NFS_V4_LOCK, "Entering NFS v4 LOCK handler -----------------------------------------------------"); /* Initialize to sane starting values */ resp->resop = NFS4_OP_LOCK; /* If there is no FH */ if(nfs4_Is_Fh_Empty(&(data->currentFH))) { res_LOCK4.status = NFS4ERR_NOFILEHANDLE; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Is_Fh_Empty"); return res_LOCK4.status; } /* If the filehandle is invalid */ if(nfs4_Is_Fh_Invalid(&(data->currentFH))) { res_LOCK4.status = NFS4ERR_BADHANDLE; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Is_Fh_Invalid"); return res_LOCK4.status; } /* Tests if the Filehandle is expired (for volatile filehandle) */ if(nfs4_Is_Fh_Expired(&(data->currentFH))) { res_LOCK4.status = NFS4ERR_FHEXPIRED; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Is_Fh_Expired"); return res_LOCK4.status; } /* Lock is done only on a file */ if(data->current_filetype != REGULAR_FILE) { /* Type of the entry is not correct */ switch (data->current_filetype) { case DIRECTORY: res_LOCK4.status = NFS4ERR_ISDIR; break; default: res_LOCK4.status = NFS4ERR_INVAL; break; } LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed wrong file type"); return res_LOCK4.status; } /* Convert lock parameters to internal types */ switch(arg_LOCK4.locktype) { case READ_LT: lock_desc.sld_type = STATE_LOCK_R; blocking = STATE_NON_BLOCKING; break; case WRITE_LT: lock_desc.sld_type = STATE_LOCK_W; blocking = STATE_NON_BLOCKING; break; case READW_LT: lock_desc.sld_type = STATE_LOCK_R; blocking = STATE_NFSV4_BLOCKING; break; case WRITEW_LT: lock_desc.sld_type = STATE_LOCK_W; blocking = STATE_NFSV4_BLOCKING; break; } lock_desc.sld_offset = arg_LOCK4.offset; if(arg_LOCK4.length != STATE_LOCK_OFFSET_EOF) lock_desc.sld_length = arg_LOCK4.length; else lock_desc.sld_length = 0; if(arg_LOCK4.locker.new_lock_owner) { /* New lock owner, Find the open owner */ tag = "LOCK (new owner)"; /* Check stateid correctness and get pointer to state */ if((rc = nfs4_Check_Stateid(&arg_LOCK4.locker.locker4_u.open_owner.open_stateid, data->current_entry, 0LL, &pstate_open, data, STATEID_SPECIAL_FOR_LOCK, tag)) != NFS4_OK) { res_LOCK4.status = rc; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Check_Stateid for open owner"); return res_LOCK4.status; } popen_owner = pstate_open->state_powner; plock_state = NULL; plock_owner = NULL; presp_owner = popen_owner; seqid = arg_LOCK4.locker.locker4_u.open_owner.open_seqid; LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG, "LOCK New lock owner from open owner", data->current_entry, data->pcontext, popen_owner, &lock_desc); /* Check is the clientid is known or not */ if(nfs_client_id_get(arg_LOCK4.locker.locker4_u.open_owner.lock_owner.clientid, &nfs_client_id) == CLIENT_ID_NOT_FOUND) { res_LOCK4.status = NFS4ERR_STALE_CLIENTID; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs_client_id_get"); return res_LOCK4.status; } /* The related stateid is already stored in pstate_open */ /* An open state has been found. Check its type */ if(pstate_open->state_type != STATE_TYPE_SHARE) { res_LOCK4.status = NFS4ERR_BAD_STATEID; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed open stateid is not a SHARE"); return res_LOCK4.status; } /* Lock seqid (seqid wanted for new lock) should be 0 (see newpynfs test LOCK8c) */ if(arg_LOCK4.locker.locker4_u.open_owner.lock_seqid != 0) { res_LOCK4.status = NFS4ERR_BAD_SEQID; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed new lock stateid is not 0"); return res_LOCK4.status; } /* Is this lock_owner known ? */ convert_nfs4_lock_owner(&arg_LOCK4.locker.locker4_u.open_owner.lock_owner, &owner_name); } else { /* Existing lock owner * Find the lock stateid * From that, get the open_owner */ tag = "LOCK (existing owner)"; /* There was code here before to handle all-0 stateid, but that * really doesn't apply - when we handle temporary locks for * I/O operations (which is where we will see all-0 or all-1 * stateid, those will not come in through nfs4_op_lock. */ /* Check stateid correctness and get pointer to state */ if((rc = nfs4_Check_Stateid(&arg_LOCK4.locker.locker4_u.lock_owner.lock_stateid, data->current_entry, 0LL, &plock_state, data, STATEID_SPECIAL_FOR_LOCK, tag)) != NFS4_OK) { res_LOCK4.status = rc; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Check_Stateid for existing lock owner"); return res_LOCK4.status; } /* An lock state has been found. Check its type */ if(plock_state->state_type != STATE_TYPE_LOCK) { res_LOCK4.status = NFS4ERR_BAD_STATEID; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed existing lock owner, state type is not LOCK"); return res_LOCK4.status; } /* Get the old lockowner. We can do the following 'cast', in NFSv4 lock_owner4 and open_owner4 * are different types but with the same definition*/ plock_owner = plock_state->state_powner; popen_owner = plock_owner->so_owner.so_nfs4_owner.so_related_owner; pstate_open = plock_state->state_data.lock.popenstate; presp_owner = plock_owner; seqid = arg_LOCK4.locker.locker4_u.lock_owner.lock_seqid; LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG, "LOCK Existing lock owner", data->current_entry, data->pcontext, plock_owner, &lock_desc); #ifdef _CONFORM_TO_TEST_LOCK8c /* Check validity of the seqid */ if(arg_LOCK4.locker.locker4_u.lock_owner.lock_seqid != 0) { res_LOCK4.status = NFS4ERR_BAD_SEQID; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed existing lock owner, lock seqid != 0"); return res_LOCK4.status; } #endif } /* if( arg_LOCK4.locker.new_lock_owner ) */ /* Check seqid (lock_seqid or open_seqid) */ if(!Check_nfs4_seqid(presp_owner, seqid, op, data, resp, tag)) { /* Response is all setup for us and LogDebug told what was wrong */ return res_LOCK4.status; } /* Lock length should not be 0 */ if(arg_LOCK4.length == 0LL) { res_LOCK4.status = NFS4ERR_INVAL; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed length == 0"); /* Save the response in the lock or open owner */ Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag); return res_LOCK4.status; } /* Check for range overflow. * Comparing beyond 2^64 is not possible int 64 bits precision, * but off+len > 2^64-1 is equivalent to len > 2^64-1 - off */ if(lock_desc.sld_length > (STATE_LOCK_OFFSET_EOF - lock_desc.sld_offset)) { res_LOCK4.status = NFS4ERR_INVAL; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed length overflow"); /* Save the response in the lock or open owner */ Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag); return res_LOCK4.status; } /* check if open state has correct access for type of lock. * Don't need to check for conflicting states since this open * state assures there are no conflicting states. */ if(((arg_LOCK4.locktype == WRITE_LT || arg_LOCK4.locktype == WRITEW_LT) && ((pstate_open->state_data.share.share_access & OPEN4_SHARE_ACCESS_WRITE) == 0)) || ((arg_LOCK4.locktype == READ_LT || arg_LOCK4.locktype == READW_LT) && ((pstate_open->state_data.share.share_access & OPEN4_SHARE_ACCESS_READ) == 0))) { /* The open state doesn't allow access based on the type of lock */ LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed, SHARE doesn't allow access", data->current_entry, data->pcontext, plock_owner, &lock_desc); res_LOCK4.status = NFS4ERR_OPENMODE; /* Save the response in the lock or open owner */ Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag); return res_LOCK4.status; } if(arg_LOCK4.locker.new_lock_owner) { /* A lock owner is always associated with a previously made open * which has itself a previously made stateid */ /* Get reference to open owner */ inc_state_owner_ref(popen_owner); if(nfs4_owner_Get_Pointer(&owner_name, &plock_owner)) { /* Lock owner already existsc, check lock_seqid if it's not 0 */ if(!Check_nfs4_seqid(plock_owner, arg_LOCK4.locker.locker4_u.open_owner.lock_seqid, op, data, resp, "LOCK (new owner but owner exists)")) { /* Response is all setup for us and LogDebug told what was wrong */ return res_LOCK4.status; } } else { /* This lock owner is not known yet, allocated and set up a new one */ plock_owner = create_nfs4_owner(data->pclient, &owner_name, STATE_LOCK_OWNER_NFSV4, popen_owner, 0); if(plock_owner == NULL) { res_LOCK4.status = NFS4ERR_RESOURCE; LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed to create new lock owner", data->current_entry, data->pcontext, popen_owner, &lock_desc); return res_LOCK4.status; } } /* Prepare state management structure */ memset(&candidate_type, 0, sizeof(candidate_type)); candidate_type = STATE_TYPE_LOCK; candidate_data.lock.popenstate = pstate_open; /* Add the lock state to the lock table */ if(state_add(data->current_entry, candidate_type, &candidate_data, plock_owner, data->pclient, data->pcontext, &plock_state, &state_status) != STATE_SUCCESS) { res_LOCK4.status = NFS4ERR_RESOURCE; LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed to add new stateid", data->current_entry, data->pcontext, plock_owner, &lock_desc); dec_state_owner_ref(plock_owner, data->pclient); return res_LOCK4.status; } init_glist(&plock_state->state_data.lock.state_locklist); /* Add lock state to the list of lock states belonging to the open state */ glist_add_tail(&pstate_open->state_data.share.share_lockstates, &plock_state->state_data.lock.state_sharelist); } /* if( arg_LOCK4.locker.new_lock_owner ) */ /* Now we have a lock owner and a stateid. * Go ahead and push lock into SAL (and FSAL). */ if(state_lock(data->current_entry, data->pcontext, plock_owner, plock_state, blocking, NULL, /* No block data for now */ &lock_desc, &conflict_owner, &conflict_desc, data->pclient, &state_status) != STATE_SUCCESS) { if(state_status == STATE_LOCK_CONFLICT) { /* A conflicting lock from a different lock_owner, returns NFS4ERR_DENIED */ Process_nfs4_conflict(&res_LOCK4.LOCK4res_u.denied, conflict_owner, &conflict_desc, data->pclient); } LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed with status %s", state_err_str(state_status)); res_LOCK4.status = nfs4_Errno_state(state_status); /* Save the response in the lock or open owner */ if(res_LOCK4.status != NFS4ERR_RESOURCE && res_LOCK4.status != NFS4ERR_BAD_STATEID) Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag); if(arg_LOCK4.locker.new_lock_owner) { /* Need to destroy lock owner and state */ if(state_del(plock_state, data->pclient, &state_status) != STATE_SUCCESS) LogDebug(COMPONENT_NFS_V4_LOCK, "state_del failed with status %s", state_err_str(state_status)); } return res_LOCK4.status; } res_LOCK4.status = NFS4_OK; /* Handle stateid/seqid for success */ update_stateid(plock_state, &res_LOCK4.LOCK4res_u.resok4.lock_stateid, data, tag); LogFullDebug(COMPONENT_NFS_V4_LOCK, "LOCK state_seqid = %u, plock_state = %p", plock_state->state_seqid, plock_state); /* Save the response in the lock or open owner */ Copy_nfs4_state_req(presp_owner, seqid, op, data, resp, tag); LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG, "LOCK applied", data->current_entry, data->pcontext, plock_owner, &lock_desc); return res_LOCK4.status; #endif } /* nfs4_op_lock */
int nfs4_op_open(struct nfs_argop4 *op, compound_data_t *data, struct nfs_resop4 *resp) { /* Shorter alias for OPEN4 arguments */ OPEN4args * const arg_OPEN4 = &(op->nfs_argop4_u.opopen); /* Shorter alias for OPEN4 response */ OPEN4res * const res_OPEN4 = &(resp->nfs_resop4_u.opopen); /* The handle from which the change_info4 is to be * generated. Every mention of change_info4 in RFC5661 * speaks of the parent directory of the file being opened. * However, with CLAIM_FH, CLAIM_DELEG_CUR_FH, and * CLAIM_DELEG_PREV_FH, there is no way to derive the parent * directory from the file handle. It is Unclear what the * correct behavior is. In our implementation, we take the * change_info4 of whatever filehandle is current when the * OPEN operation is invoked. */ struct fsal_obj_handle *obj_change = NULL; /* The found client record */ nfs_client_id_t *clientid = NULL; /* The found or created state owner for this open */ state_owner_t *owner = NULL; /* The supplied calim type */ open_claim_type4 claim = arg_OPEN4->claim.claim; /* The open state for the file */ state_t *file_state = NULL; /* True if the state was newly created */ bool new_state = false; int retval; LogDebug(COMPONENT_STATE, "Entering NFS v4 OPEN handler -----------------------------"); /* What kind of open is it ? */ LogFullDebug(COMPONENT_STATE, "OPEN: Claim type = %d, Open Type = %d, Share Deny = %d, Share Access = %d ", arg_OPEN4->claim.claim, arg_OPEN4->openhow.opentype, arg_OPEN4->share_deny, arg_OPEN4->share_access); resp->resop = NFS4_OP_OPEN; res_OPEN4->status = NFS4_OK; res_OPEN4->OPEN4res_u.resok4.rflags = 0; /* Check export permissions if OPEN4_CREATE */ if ((arg_OPEN4->openhow.opentype == OPEN4_CREATE) && ((op_ctx->export_perms->options & EXPORT_OPTION_MD_WRITE_ACCESS) == 0)) { res_OPEN4->status = NFS4ERR_ROFS; LogDebug(COMPONENT_NFS_V4, "Status of OP_OPEN due to export permissions = %s", nfsstat4_to_str(res_OPEN4->status)); return res_OPEN4->status; } /* Check export permissions if OPEN4_SHARE_ACCESS_WRITE */ if (((arg_OPEN4->share_access & OPEN4_SHARE_ACCESS_WRITE) != 0) && ((op_ctx->export_perms->options & EXPORT_OPTION_WRITE_ACCESS) == 0)) { res_OPEN4->status = NFS4ERR_ROFS; LogDebug(COMPONENT_NFS_V4, "Status of OP_OPEN due to export permissions = %s", nfsstat4_to_str(res_OPEN4->status)); return res_OPEN4->status; } /* Do basic checks on a filehandle */ res_OPEN4->status = nfs4_sanity_check_FH(data, NO_FILE_TYPE, false); if (res_OPEN4->status != NFS4_OK) return res_OPEN4->status; if (data->current_obj == NULL) { /* This should be impossible, as PUTFH fills in the * current entry and previous checks weed out handles * in the PseudoFS and DS handles. */ res_OPEN4->status = NFS4ERR_SERVERFAULT; LogCrit(COMPONENT_NFS_V4, "Impossible condition in compound data at %s:%u.", __FILE__, __LINE__); goto out3; } /* It this a known client id? */ LogDebug(COMPONENT_STATE, "OPEN Client id = %" PRIx64, arg_OPEN4->owner.clientid); retval = nfs_client_id_get_confirmed( data->minorversion == 0 ? arg_OPEN4->owner.clientid : data->session->clientid, &clientid); if (retval != CLIENT_ID_SUCCESS) { res_OPEN4->status = clientid_error_to_nfsstat(retval); LogDebug(COMPONENT_NFS_V4, "nfs_client_id_get_confirmed failed"); return res_OPEN4->status; } /* Check if lease is expired and reserve it */ PTHREAD_MUTEX_lock(&clientid->cid_mutex); if (data->minorversion == 0 && !reserve_lease(clientid)) { PTHREAD_MUTEX_unlock(&clientid->cid_mutex); res_OPEN4->status = NFS4ERR_EXPIRED; LogDebug(COMPONENT_NFS_V4, "Lease expired"); goto out3; } PTHREAD_MUTEX_unlock(&clientid->cid_mutex); /* Get the open owner */ if (!open4_open_owner(op, data, resp, clientid, &owner)) { LogDebug(COMPONENT_NFS_V4, "open4_open_owner failed"); goto out2; } /* Do the claim check here, so we can save the result in the * owner for NFSv4.0. */ res_OPEN4->status = open4_validate_claim(data, claim, clientid); if (res_OPEN4->status != NFS4_OK) { LogDebug(COMPONENT_NFS_V4, "open4_validate_claim failed"); goto out; } /* After this point we know we have only CLAIM_NULL, * CLAIM_FH, or CLAIM_PREVIOUS, and that our grace period and * minor version are appropriate for the claim specified. */ if ((arg_OPEN4->openhow.opentype == OPEN4_CREATE) && (claim != CLAIM_NULL)) { res_OPEN4->status = NFS4ERR_INVAL; LogDebug(COMPONENT_NFS_V4, "OPEN4_CREATE but not CLAIM_NULL"); goto out2; } /* So we still have a reference even after we repalce the * current FH. */ obj_change = data->current_obj; obj_change->obj_ops->get_ref(obj_change); /* Update the change info for entry_change. */ res_OPEN4->OPEN4res_u.resok4.cinfo.before = fsal_get_changeid4(obj_change); /* Check if share_access does not have any access set, or has * invalid bits that are set. check that share_deny doesn't * have any invalid bits set. */ if (!(arg_OPEN4->share_access & OPEN4_SHARE_ACCESS_BOTH) || (data->minorversion == 0 && arg_OPEN4->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || (arg_OPEN4->share_access & (~OPEN4_SHARE_ACCESS_WANT_DELEG_MASK & ~OPEN4_SHARE_ACCESS_BOTH)) || (arg_OPEN4->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { res_OPEN4->status = NFS4ERR_INVAL; LogDebug(COMPONENT_NFS_V4, "Invalid SHARE_ACCESS or SHARE_DENY"); goto out; } /* Utilize the extended FSAL APU functionality to perform the open. */ open4_ex(arg_OPEN4, data, res_OPEN4, clientid, owner, &file_state, &new_state); if (res_OPEN4->status != NFS4_OK) goto out; memset(&res_OPEN4->OPEN4res_u.resok4.attrset, 0, sizeof(struct bitmap4)); if (arg_OPEN4->openhow.openflag4_u.how.mode == EXCLUSIVE4 || arg_OPEN4->openhow.openflag4_u.how.mode == EXCLUSIVE4_1) { struct bitmap4 *bits = &res_OPEN4->OPEN4res_u.resok4.attrset; set_attribute_in_bitmap(bits, FATTR4_TIME_ACCESS); set_attribute_in_bitmap(bits, FATTR4_TIME_MODIFY); } /* If server use OPEN_CONFIRM4, set the correct flag, * but not for 4.1 */ if (owner->so_owner.so_nfs4_owner.so_confirmed == false) res_OPEN4->OPEN4res_u.resok4.rflags |= OPEN4_RESULT_CONFIRM; res_OPEN4->OPEN4res_u.resok4.rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; LogFullDebug(COMPONENT_STATE, "NFS4 OPEN returning NFS4_OK"); /* regular exit */ res_OPEN4->status = NFS4_OK; /* Update change_info4 */ res_OPEN4->OPEN4res_u.resok4.cinfo.after = fsal_get_changeid4(obj_change); res_OPEN4->OPEN4res_u.resok4.cinfo.atomic = FALSE; /* Handle open stateid/seqid for success */ update_stateid(file_state, &res_OPEN4->OPEN4res_u.resok4.stateid, data, open_tag); out: if (res_OPEN4->status != NFS4_OK) { LogDebug(COMPONENT_STATE, "failed with status %s", nfsstat4_to_str(res_OPEN4->status)); } /* Save the response in the open owner. * obj_change is either the parent directory or for a CLAIM_PREV is * the entry itself. In either case, it's the right entry to use in * saving the request results. */ if (data->minorversion == 0) { Copy_nfs4_state_req(owner, arg_OPEN4->seqid, op, obj_change, resp, open_tag); } out2: /* Update the lease before exit */ if (data->minorversion == 0) { PTHREAD_MUTEX_lock(&clientid->cid_mutex); update_lease(clientid); PTHREAD_MUTEX_unlock(&clientid->cid_mutex); } if (file_state != NULL) dec_state_t_ref(file_state); /* Clean up if we have an error exit */ if ((file_state != NULL) && new_state && (res_OPEN4->status != NFS4_OK)) { /* Need to destroy open owner and state */ state_del(file_state); } if (obj_change) obj_change->obj_ops->put_ref(obj_change); if (owner != NULL) { /* Need to release the open owner for this call */ dec_state_owner_ref(owner); } out3: dec_client_id_ref(clientid); return res_OPEN4->status; } /* nfs4_op_open */
int nfs4_op_lock(struct nfs_argop4 *op, compound_data_t *data, struct nfs_resop4 *resp) { /* Shorter alias for arguments */ LOCK4args * const arg_LOCK4 = &op->nfs_argop4_u.oplock; /* Shorter alias for response */ LOCK4res * const res_LOCK4 = &resp->nfs_resop4_u.oplock; /* Status code from state calls */ state_status_t state_status = STATE_SUCCESS; /* Data for lock state to be created */ union state_data candidate_data; /* Status code for protocol functions */ nfsstat4 nfs_status = 0; /* Created or found lock state */ state_t *lock_state = NULL; /* Associated open state */ state_t *state_open = NULL; /* The lock owner */ state_owner_t *lock_owner = NULL; /* The open owner */ state_owner_t *open_owner = NULL; /* The owner of a conflicting lock */ state_owner_t *conflict_owner = NULL; /* The owner in which to store the response for NFSv4.0 */ state_owner_t *resp_owner = NULL; /* Sequence ID, for NFSv4.0 */ seqid4 seqid = 0; /* The client performing these operations */ nfs_client_id_t *clientid = NULL; /* Name for the lock owner */ state_nfs4_owner_name_t owner_name; /* Description of requrested lock */ fsal_lock_param_t lock_desc; /* Description of conflicting lock */ fsal_lock_param_t conflict_desc; /* Whether to block */ state_blocking_t blocking = STATE_NON_BLOCKING; /* Tracking data for the lock state */ struct state_refer refer; /* Indicate if we let FSAL to handle requests during grace. */ bool_t fsal_grace = false; int rc; LogDebug(COMPONENT_NFS_V4_LOCK, "Entering NFS v4 LOCK handler ----------------------"); /* Initialize to sane starting values */ resp->resop = NFS4_OP_LOCK; res_LOCK4->status = NFS4_OK; /* Record the sequence info */ if (data->minorversion > 0) { memcpy(refer.session, data->session->session_id, sizeof(sessionid4)); refer.sequence = data->sequence; refer.slot = data->slot; } res_LOCK4->status = nfs4_sanity_check_FH(data, REGULAR_FILE, false); if (res_LOCK4->status != NFS4_OK) return res_LOCK4->status; /* Convert lock parameters to internal types */ switch (arg_LOCK4->locktype) { case READW_LT: blocking = STATE_NFSV4_BLOCKING; /* Fall through */ case READ_LT: lock_desc.lock_type = FSAL_LOCK_R; break; case WRITEW_LT: blocking = STATE_NFSV4_BLOCKING; /* Fall through */ case WRITE_LT: lock_desc.lock_type = FSAL_LOCK_W; break; default: LogDebug(COMPONENT_NFS_V4_LOCK, "Invalid lock type"); res_LOCK4->status = NFS4ERR_INVAL; return res_LOCK4->status; } lock_desc.lock_start = arg_LOCK4->offset; lock_desc.lock_sle_type = FSAL_POSIX_LOCK; lock_desc.lock_reclaim = arg_LOCK4->reclaim; if (arg_LOCK4->length != STATE_LOCK_OFFSET_EOF) lock_desc.lock_length = arg_LOCK4->length; else lock_desc.lock_length = 0; if (arg_LOCK4->locker.new_lock_owner) { /* Check stateid correctness and get pointer to state */ nfs_status = nfs4_Check_Stateid( &arg_LOCK4->locker.locker4_u.open_owner.open_stateid, data->current_obj, &state_open, data, STATEID_SPECIAL_FOR_LOCK, arg_LOCK4->locker.locker4_u.open_owner.open_seqid, data->minorversion == 0, lock_tag); if (nfs_status != NFS4_OK) { if (nfs_status == NFS4ERR_REPLAY) { open_owner = get_state_owner_ref(state_open); LogStateOwner("Open: ", open_owner); if (open_owner != NULL) { resp_owner = open_owner; seqid = arg_LOCK4->locker.locker4_u .open_owner.open_seqid; goto check_seqid; } } res_LOCK4->status = nfs_status; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Check_Stateid for open owner"); return res_LOCK4->status; } open_owner = get_state_owner_ref(state_open); LogStateOwner("Open: ", open_owner); if (open_owner == NULL) { /* State is going stale. */ res_LOCK4->status = NFS4ERR_STALE; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Check_Stateid, stale open owner"); goto out2; } lock_state = NULL; lock_owner = NULL; resp_owner = open_owner; seqid = arg_LOCK4->locker.locker4_u.open_owner.open_seqid; LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG, "LOCK New lock owner from open owner", data->current_obj, open_owner, &lock_desc); /* Check is the clientid is known or not */ rc = nfs_client_id_get_confirmed( data->minorversion == 0 ? arg_LOCK4->locker. locker4_u.open_owner.lock_owner.clientid : data->session->clientid, &clientid); if (rc != CLIENT_ID_SUCCESS) { res_LOCK4->status = clientid_error_to_nfsstat(rc); LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs_client_id_get"); goto out2; } if (isDebug(COMPONENT_CLIENTID) && (clientid != open_owner->so_owner.so_nfs4_owner.so_clientrec)) { char str_open[LOG_BUFF_LEN / 2]; struct display_buffer dspbuf_open = { sizeof(str_open), str_open, str_open}; char str_lock[LOG_BUFF_LEN / 2]; struct display_buffer dspbuf_lock = { sizeof(str_lock), str_lock, str_lock}; display_client_id_rec(&dspbuf_open, open_owner->so_owner .so_nfs4_owner.so_clientrec); display_client_id_rec(&dspbuf_lock, clientid); LogDebug(COMPONENT_CLIENTID, "Unexpected, new lock owner clientid {%s} doesn't match open owner clientid {%s}", str_lock, str_open); } /* The related stateid is already stored in state_open */ /* An open state has been found. Check its type */ if (state_open->state_type != STATE_TYPE_SHARE) { res_LOCK4->status = NFS4ERR_BAD_STATEID; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed open stateid is not a SHARE"); goto out2; } /* Is this lock_owner known ? */ convert_nfs4_lock_owner(&arg_LOCK4->locker.locker4_u.open_owner. lock_owner, &owner_name); LogStateOwner("Lock: ", lock_owner); } else { /* Existing lock owner Find the lock stateid From * that, get the open_owner * * There was code here before to handle all-0 stateid, * but that really doesn't apply - when we handle * temporary locks for I/O operations (which is where * we will see all-0 or all-1 stateid, those will not * come in through nfs4_op_lock. * * Check stateid correctness and get pointer to state */ nfs_status = nfs4_Check_Stateid( &arg_LOCK4->locker.locker4_u.lock_owner.lock_stateid, data->current_obj, &lock_state, data, STATEID_SPECIAL_FOR_LOCK, arg_LOCK4->locker.locker4_u.lock_owner.lock_seqid, data->minorversion == 0, lock_tag); if (nfs_status != NFS4_OK) { if (nfs_status == NFS4ERR_REPLAY) { lock_owner = get_state_owner_ref(lock_state); LogStateOwner("Lock: ", lock_owner); if (lock_owner != NULL) { open_owner = lock_owner->so_owner .so_nfs4_owner.so_related_owner; inc_state_owner_ref(open_owner); resp_owner = lock_owner; seqid = arg_LOCK4->locker.locker4_u .lock_owner.lock_seqid; goto check_seqid; } } res_LOCK4->status = nfs_status; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Check_Stateid for existing lock owner"); return res_LOCK4->status; } /* Check if lock state belongs to same export */ if (!state_same_export(lock_state, op_ctx->ctx_export)) { LogEvent(COMPONENT_STATE, "Lock Owner Export Conflict, Lock held for export %" PRIu16" request for export %"PRIu16, state_export_id(lock_state), op_ctx->ctx_export->export_id); res_LOCK4->status = NFS4ERR_INVAL; goto out2; } /* A lock state has been found. Check its type */ if (lock_state->state_type != STATE_TYPE_LOCK) { res_LOCK4->status = NFS4ERR_BAD_STATEID; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed existing lock owner, state type is not LOCK"); goto out2; } /* Get the old lockowner. We can do the following * 'cast', in NFSv4 lock_owner4 and open_owner4 are * different types but with the same definition */ lock_owner = get_state_owner_ref(lock_state); LogStateOwner("Lock: ", lock_owner); if (lock_owner == NULL) { /* State is going stale. */ res_LOCK4->status = NFS4ERR_STALE; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed nfs4_Check_Stateid, stale open owner"); goto out2; } open_owner = lock_owner->so_owner.so_nfs4_owner.so_related_owner; LogStateOwner("Open: ", open_owner); inc_state_owner_ref(open_owner); state_open = lock_state->state_data.lock.openstate; inc_state_t_ref(state_open); resp_owner = lock_owner; seqid = arg_LOCK4->locker.locker4_u.lock_owner.lock_seqid; LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG, "LOCK Existing lock owner", data->current_obj, lock_owner, &lock_desc); /* Get the client for this open owner */ clientid = open_owner->so_owner.so_nfs4_owner.so_clientrec; inc_client_id_ref(clientid); } check_seqid: /* Check seqid (lock_seqid or open_seqid) */ if (data->minorversion == 0) { if (!Check_nfs4_seqid(resp_owner, seqid, op, data->current_obj, resp, lock_tag)) { /* Response is all setup for us and LogDebug * told what was wrong */ goto out2; } } /* Lock length should not be 0 */ if (arg_LOCK4->length == 0LL) { res_LOCK4->status = NFS4ERR_INVAL; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed length == 0"); goto out; } /* Check for range overflow. Comparing beyond 2^64 is not * possible int 64 bits precision, but off+len > 2^64-1 is * equivalent to len > 2^64-1 - off */ if (lock_desc.lock_length > (STATE_LOCK_OFFSET_EOF - lock_desc.lock_start)) { res_LOCK4->status = NFS4ERR_INVAL; LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed length overflow"); goto out; } /* Check if open state has correct access for type of lock. * * Don't need to check for conflicting states since this open * state assures there are no conflicting states. */ if (((arg_LOCK4->locktype == WRITE_LT || arg_LOCK4->locktype == WRITEW_LT) && ((state_open->state_data.share.share_access & OPEN4_SHARE_ACCESS_WRITE) == 0)) || ((arg_LOCK4->locktype == READ_LT || arg_LOCK4->locktype == READW_LT) && ((state_open->state_data.share.share_access & OPEN4_SHARE_ACCESS_READ) == 0))) { /* The open state doesn't allow access based on the * type of lock */ LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed, SHARE doesn't allow access", data->current_obj, lock_owner, &lock_desc); res_LOCK4->status = NFS4ERR_OPENMODE; goto out; } /* Do grace period checking (use resp_owner below since a new * lock request with a new lock owner doesn't have a lock owner * yet, but does have an open owner - resp_owner is always one or * the other and non-NULL at this point - so makes for a better log). */ if (nfs_in_grace()) { if (op_ctx->fsal_export->exp_ops. fs_supports(op_ctx->fsal_export, fso_grace_method)) fsal_grace = true; if (!fsal_grace && !arg_LOCK4->reclaim) { LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed, non-reclaim while in grace", data->current_obj, resp_owner, &lock_desc); res_LOCK4->status = NFS4ERR_GRACE; goto out; } if (!fsal_grace && arg_LOCK4->reclaim && !clientid->cid_allow_reclaim) { LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed, invalid reclaim while in grace", data->current_obj, resp_owner, &lock_desc); res_LOCK4->status = NFS4ERR_NO_GRACE; goto out; } } else { if (arg_LOCK4->reclaim) { LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed, reclaim while not in grace", data->current_obj, resp_owner, &lock_desc); res_LOCK4->status = NFS4ERR_NO_GRACE; goto out; } } /* Test if this request is attempting to create a new lock owner */ if (arg_LOCK4->locker.new_lock_owner) { bool_t isnew; /* A lock owner is always associated with a previously made open which has itself a previously made stateid */ /* This lock owner is not known yet, allocated and set up a new one */ lock_owner = create_nfs4_owner(&owner_name, clientid, STATE_LOCK_OWNER_NFSV4, open_owner, 0, &isnew, CARE_ALWAYS); LogStateOwner("Lock: ", lock_owner); if (lock_owner == NULL) { res_LOCK4->status = NFS4ERR_RESOURCE; LogLock(COMPONENT_NFS_V4_LOCK, NIV_EVENT, "LOCK failed to create new lock owner", data->current_obj, open_owner, &lock_desc); goto out2; } if (!isnew) { PTHREAD_MUTEX_lock(&lock_owner->so_mutex); /* Check lock_seqid if it has attached locks. */ if (!glist_empty(&lock_owner->so_lock_list) && (data->minorversion == 0) && !Check_nfs4_seqid(lock_owner, arg_LOCK4->locker.locker4_u. open_owner.lock_seqid, op, data->current_obj, resp, lock_tag)) { LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed to create new lock owner, re-use", data->current_obj, open_owner, &lock_desc); dump_all_locks( "All locks (re-use of lock owner)"); PTHREAD_MUTEX_unlock(&lock_owner->so_mutex); /* Response is all setup for us and * LogDebug told what was wrong */ goto out2; } PTHREAD_MUTEX_unlock(&lock_owner->so_mutex); /* Lock owner is known, see if we also already have * a stateid. Do this here since it's impossible for * there to be such a state if the lock owner was * previously unknown. */ lock_state = nfs4_State_Get_Obj(data->current_obj, lock_owner); } if (lock_state == NULL) { /* Prepare state management structure */ memset(&candidate_data, 0, sizeof(candidate_data)); candidate_data.lock.openstate = state_open; /* Add the lock state to the lock table */ state_status = state_add(data->current_obj, STATE_TYPE_LOCK, &candidate_data, lock_owner, &lock_state, data->minorversion > 0 ? &refer : NULL); if (state_status != STATE_SUCCESS) { res_LOCK4->status = NFS4ERR_RESOURCE; LogLock(COMPONENT_NFS_V4_LOCK, NIV_DEBUG, "LOCK failed to add new stateid", data->current_obj, lock_owner, &lock_desc); goto out2; } glist_init(&lock_state->state_data.lock.state_locklist); /* Add lock state to the list of lock states belonging to the open state */ glist_add_tail( &state_open->state_data.share.share_lockstates, &lock_state->state_data.lock.state_sharelist); } } if (data->minorversion == 0) { op_ctx->clientid = &lock_owner->so_owner.so_nfs4_owner.so_clientid; } /* Now we have a lock owner and a stateid. Go ahead and push * lock into SAL (and FSAL). */ state_status = state_lock(data->current_obj, lock_owner, lock_state, blocking, NULL, /* No block data for now */ &lock_desc, &conflict_owner, &conflict_desc); if (state_status != STATE_SUCCESS) { if (state_status == STATE_LOCK_CONFLICT) { /* A conflicting lock from a different lock_owner, returns NFS4ERR_DENIED */ Process_nfs4_conflict(&res_LOCK4->LOCK4res_u.denied, conflict_owner, &conflict_desc); } LogDebug(COMPONENT_NFS_V4_LOCK, "LOCK failed with status %s", state_err_str(state_status)); res_LOCK4->status = nfs4_Errno_state(state_status); /* Save the response in the lock or open owner */ if (res_LOCK4->status != NFS4ERR_RESOURCE && res_LOCK4->status != NFS4ERR_BAD_STATEID && data->minorversion == 0) { Copy_nfs4_state_req(resp_owner, seqid, op, data->current_obj, resp, lock_tag); } if (arg_LOCK4->locker.new_lock_owner) { /* Need to destroy new state */ state_del(lock_state); } goto out2; } if (data->minorversion == 0) op_ctx->clientid = NULL; res_LOCK4->status = NFS4_OK; /* Handle stateid/seqid for success */ update_stateid(lock_state, &res_LOCK4->LOCK4res_u.resok4.lock_stateid, data, lock_tag); if (arg_LOCK4->locker.new_lock_owner) { /* Also save the response in the lock owner */ Copy_nfs4_state_req(lock_owner, arg_LOCK4->locker.locker4_u.open_owner. lock_seqid, op, data->current_obj, resp, lock_tag); } if (isFullDebug(COMPONENT_NFS_V4_LOCK)) { char str[LOG_BUFF_LEN]; struct display_buffer dspbuf = {sizeof(str), str, str}; display_stateid(&dspbuf, lock_state); LogFullDebug(COMPONENT_NFS_V4_LOCK, "LOCK stateid %s", str); } LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG, "LOCK applied", data->current_obj, lock_owner, &lock_desc); out: if (data->minorversion == 0) { /* Save the response in the lock or open owner */ Copy_nfs4_state_req(resp_owner, seqid, op, data->current_obj, resp, lock_tag); } out2: if (state_open != NULL) dec_state_t_ref(state_open); if (lock_state != NULL) dec_state_t_ref(lock_state); LogStateOwner("Open: ", open_owner); LogStateOwner("Lock: ", lock_owner); if (open_owner != NULL) dec_state_owner_ref(open_owner); if (lock_owner != NULL) dec_state_owner_ref(lock_owner); if (clientid != NULL) dec_client_id_ref(clientid); return res_LOCK4->status; } /* nfs4_op_lock */
PRIVATE inline int Thread::handle_io_page_fault(Trap_state *ts) { Address eip = ts->ip(); if (!check_io_bitmap_delimiter_fault(ts)) return 0; // Check for IO page faults. If we got exception #14, the IO bitmap page is // not available. If we got exception #13, the IO bitmap is available but // the according bit is set. In both cases we have to dispatch the code at // the faulting eip to deterine the IO port and send an IO flexpage to our // pager. If it was a page fault, check the faulting address to prevent // touching userland. if (eip < Kmem::mem_user_max && (ts->_trapno == 13 && (ts->_err & 7) == 0 || ts->_trapno == 14 && Kmem::is_io_bitmap_page_fault(ts->_cr2))) { unsigned port, size; if (get_ioport(eip, ts, &port, &size)) { Mword io_page = L4_fpage::io(port, size).raw(); // set User mode flag to get correct IP in handle_page_fault_pager // pretend a write page fault static const unsigned io_error_code = PF_ERR_WRITE | PF_ERR_USERMODE; CNT_IO_FAULT; if (EXPECT_FALSE (log_page_fault())) page_fault_log(io_page, io_error_code, eip); // treat it as a page fault in the region above 0xf0000000, // We could also reset the Thread_cancel at slowtraps entry but it // could be harmful for debugging (see also comment at slowtraps:). // // This must be done while interrupts are off to prevent that an // other thread sets the flag again. state_del(Thread_cancel); // set cr2 in ts so that we also get the io_page value in an // consecutive exception ts->_cr2 = io_page; if (EXPECT_FALSE(state() & Thread_alien)) { // special case for alien tasks: Don't generate pagefault but // send (pagefault) exception to pager. ts->_trapno = 14; if (send_exception(ts)) return 1; else return 2; // fail, don't send exception again } bool ipc_code = handle_page_fault_pager(_pager, io_page, io_error_code, L4_msg_tag::Label_io_page_fault); if (ipc_code) return 1; } } return 0; // fail }