/**
* @brief Display NFSv4 owner
*
* @param[in] owner The state owner
* @param[out] str Output string
*
* @return The length of the output string.
*/
int display_nfs4_owner(state_owner_t *owner, char *str)
{
char *strtmp = str;
strtmp += sprintf(strtmp, "%s %p:",
state_owner_type_to_str(owner->so_type),
owner);
strtmp += sprintf(strtmp, " clientid={");
strtmp += display_client_id_rec(owner->so_owner.so_nfs4_owner.so_clientrec, strtmp);
strtmp += sprintf(strtmp, "} owner=");
strtmp += DisplayOpaqueValue(owner->so_owner_val,
owner->so_owner_len,
strtmp);
strtmp += sprintf(strtmp, " confirmed=%u seqid=%u",
owner->so_owner.so_nfs4_owner.so_confirmed,
owner->so_owner.so_nfs4_owner.so_seqid);
if(owner->so_owner.so_nfs4_owner.so_related_owner != NULL)
{
strtmp += sprintf(strtmp, " related_owner={");
strtmp += display_nfs4_owner(owner->so_owner.so_nfs4_owner.so_related_owner, strtmp);
strtmp += sprintf(strtmp, "}");
}
strtmp += sprintf(strtmp, " refcount=%d",
atomic_fetch_int32_t(&owner->so_refcount));
return strtmp - str;
}
/**
* @brief Release a lease reservation and update lease.
*
* Lease reservation prevents any other thread from expiring the lease. This
* function releases the lease reservation. Before releasing the last
* reservation, cid_last_renew will be updated.
*
* @param[in] clientid Clientid record to update
*
* @return 1 if lease is valid, 0 if not.
*
*/
void update_lease(nfs_client_id_t *clientid)
{
clientid->cid_lease_reservations--;
/* Renew lease when last reservation is released */
if (clientid->cid_lease_reservations == 0)
clientid->cid_last_renew = time(NULL);
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(clientid, str);
LogFullDebug(COMPONENT_CLIENTID, "Update Lease %s", str);
}
}
/**
* @brief Check if lease is valid
*
* The caller must hold cid_mutex.
*
* @param[in] clientid Record to check lease for.
*
* @return 1 if lease is valid, 0 if not.
*
*/
bool valid_lease(nfs_client_id_t *clientid)
{
unsigned int valid;
valid = _valid_lease(clientid);
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(clientid, str);
LogFullDebug(COMPONENT_CLIENTID,
"Check Lease %s (Valid=%s %u seconds left)", str,
valid ? "YES" : "NO", valid);
}
return valid != 0;
}
/**
*
* reserve_lease_lock: Check if lease is valid and reserve it and retain cid_mutex.
*
* Check if lease is valid and reserve it and retain cid_mutex.
*
* Lease reservation prevents any other thread from expiring the lease. Caller
* must call update lease to release the reservation.
*
* @param pclientid [IN] clientid record to check lease for.
*
* @return 1 if lease is valid, 0 if not.
*
*/
int reserve_lease(nfs_client_id_t * pclientid)
{
unsigned int valid;
valid = _valid_lease(pclientid);
if(valid != 0)
pclientid->cid_lease_reservations++;
if(isFullDebug(COMPONENT_CLIENTID))
{
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(pclientid, str);
LogFullDebug(COMPONENT_CLIENTID,
"Reserve Lease %s (Valid=%s %u seconds left)",
str, valid ? "YES" : "NO", valid);
}
return valid != 0;
}
int nfs4_op_setclientid(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
SETCLIENTID4args * const arg_SETCLIENTID4 =
&op->nfs_argop4_u.opsetclientid;
SETCLIENTID4res * const res_SETCLIENTID4 =
&resp->nfs_resop4_u.opsetclientid;
clientaddr4 * const res_SETCLIENTID4_INUSE =
&resp->nfs_resop4_u.opsetclientid.SETCLIENTID4res_u.client_using;
char str_verifier[NFS4_VERIFIER_SIZE * 2 + 1];
char str_client[NFS4_OPAQUE_LIMIT * 2 + 1];
char str_client_addr[SOCK_NAME_MAX + 1];
nfs_client_record_t *client_record;
nfs_client_id_t *conf;
nfs_client_id_t *unconf;
clientid4 clientid;
verifier4 verifier;
sockaddr_t client_addr;
int rc;
resp->resop = NFS4_OP_SETCLIENTID;
if (data->minorversion > 0) {
res_SETCLIENTID4->status = NFS4ERR_NOTSUPP;
return res_SETCLIENTID4->status;
}
copy_xprt_addr(&client_addr, data->req->rq_xprt);
if (isDebug(COMPONENT_CLIENTID)) {
sprint_sockip(&client_addr, str_client_addr,
sizeof(str_client_addr));
DisplayOpaqueValue(arg_SETCLIENTID4->client.id.id_val,
arg_SETCLIENTID4->client.id.id_len,
str_client);
sprint_mem(str_verifier, arg_SETCLIENTID4->client.verifier,
NFS4_VERIFIER_SIZE);
}
LogDebug(COMPONENT_CLIENTID,
"SETCLIENTID Client addr=%s id=%s verf=%s callback={program=%u r_addr=%s r_netid=%s} ident=%u",
str_client_addr, str_client, str_verifier,
arg_SETCLIENTID4->callback.cb_program,
arg_SETCLIENTID4->callback.cb_location.r_addr,
arg_SETCLIENTID4->callback.cb_location.r_netid,
arg_SETCLIENTID4->callback_ident);
/* Do we already have one or more records for client id (x)? */
client_record = get_client_record(arg_SETCLIENTID4->client.id.id_val,
arg_SETCLIENTID4->client.id.id_len,
0,
0);
if (client_record == NULL) {
/* Some major failure */
LogCrit(COMPONENT_CLIENTID, "SETCLIENTID failed");
res_SETCLIENTID4->status = NFS4ERR_SERVERFAULT;
return res_SETCLIENTID4->status;
}
/* The following checks are based on RFC3530bis draft 16
*
* This attempts to implement the logic described in
* 15.35.5. IMPLEMENTATION Consider the major bullets as CASE
* 1, CASE 2, CASE 3, CASE 4, and CASE 5.
*/
pthread_mutex_lock(&client_record->cr_mutex);
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_record(client_record, str);
LogFullDebug(COMPONENT_CLIENTID,
"Client Record %s cr_confirmed_rec=%p "
"cr_unconfirmed_rec=%p", str,
client_record->cr_confirmed_rec,
client_record->cr_unconfirmed_rec);
}
conf = client_record->cr_confirmed_rec;
if (conf != NULL) {
/* Need a reference to the confirmed record for below */
inc_client_id_ref(conf);
if (!nfs_compare_clientcred(&conf->cid_credential,
&data->credential)
|| !cmp_sockaddr(&conf->cid_client_addr,
&client_addr,
true)) {
/* CASE 1:
*
* Confirmed record exists and not the same principal
*/
if (isDebug(COMPONENT_CLIENTID)) {
char confirmed_addr[SOCK_NAME_MAX + 1];
sprint_sockip(&conf->cid_client_addr,
confirmed_addr,
sizeof(confirmed_addr));
LogDebug(COMPONENT_CLIENTID,
"Confirmed ClientId %" PRIx64
"->'%s': Principals do not match... confirmed addr=%s Return NFS4ERR_CLID_INUSE",
conf->cid_clientid, str_client,
confirmed_addr);
}
res_SETCLIENTID4->status = NFS4ERR_CLID_INUSE;
res_SETCLIENTID4_INUSE->r_netid =
(char *)netid_nc_table[conf->cid_cb.v40.cb_addr.nc]
.netid;
res_SETCLIENTID4_INUSE->r_addr =
gsh_strdup(conf->cid_cb.v40.cb_client_r_addr);
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(conf);
goto out;
}
/* Check if confirmed record is for (v, x, c, l, s) */
if (memcmp
(arg_SETCLIENTID4->client.verifier,
conf->cid_incoming_verifier, NFS4_VERIFIER_SIZE) == 0) {
/* CASE 2:
*
* A confirmed record exists for this long
* form client id and verifier.
*
* Consider this to be a possible update of
* the call-back information.
*
* Remove any pre-existing unconfirmed record
* for (v, x, c).
*
* Return the same short form client id (c),
* but a new setclientid_confirm verifier (t).
*/
LogFullDebug(COMPONENT_CLIENTID,
"Update ClientId %" PRIx64 "->%s",
conf->cid_clientid, str_client);
clientid = conf->cid_clientid;
new_clientid_verifier(verifier);
} else {
/* Must be CASE 3 or CASE 4
*
* Confirmed record is for (u, x, c, l, s).
*
* These are actually the same, doesn't really
* matter if an unconfirmed record exists or
* not. Any existing unconfirmed record will
* be removed and a new unconfirmed record
* added.
*
* Return a new short form clientid (d) and a
* new setclientid_confirm verifier (t). (Note
* the spec calls the values e and r for CASE
* 4).
*/
LogFullDebug(COMPONENT_CLIENTID,
"Replace ClientId %" PRIx64 "->%s",
conf->cid_clientid, str_client);
clientid = new_clientid();
new_clientid_verifier(verifier);
}
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(conf);
} else {
/* CASE 5:
*
*
* Remove any existing unconfirmed record.
*
* Return a new short form clientid (d) and a new
* setclientid_confirm verifier (t).
*/
LogFullDebug(COMPONENT_CLIENTID, "New client");
clientid = new_clientid();
new_clientid_verifier(verifier);
}
/* At this point, no matter what the case was above, we should
* remove any pre-existing unconfirmed record.
*/
unconf = client_record->cr_unconfirmed_rec;
if (unconf != NULL) {
/* Delete the unconfirmed clientid record. Because we
* have the cr_mutex, we have won any race to deal
* with this clientid record (whether we raced with a
* SETCLIENTID_CONFIRM or the reaper thread (if either
* of those operations had won the race,
* cr_punconfirmed_id would have been NULL).
*/
if (isDebug(COMPONENT_CLIENTID)) {
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(unconf, str);
LogDebug(COMPONENT_CLIENTID, "Replacing %s", str);
}
/* unhash the clientid record */
remove_unconfirmed_client_id(unconf);
unconf = NULL;
}
/* Now we can proceed to build the new unconfirmed record. We
* have determined the clientid and setclientid_confirm values
* above.
*/
unconf = create_client_id(clientid,
client_record,
&client_addr,
&data->credential,
0);
if (unconf == NULL) {
/* Error already logged, return */
res_SETCLIENTID4->status = NFS4ERR_RESOURCE;
goto out;
}
if (strmaxcpy(unconf->cid_cb.v40.cb_client_r_addr,
arg_SETCLIENTID4->callback.cb_location.r_addr,
sizeof(unconf->cid_cb.v40.cb_client_r_addr)) == -1) {
LogCrit(COMPONENT_CLIENTID, "Callback r_addr %s too long",
arg_SETCLIENTID4->callback.cb_location.r_addr);
res_SETCLIENTID4->status = NFS4ERR_INVAL;
goto out;
}
nfs_set_client_location(unconf,
&arg_SETCLIENTID4->callback.cb_location);
memcpy(unconf->cid_incoming_verifier,
arg_SETCLIENTID4->client.verifier,
NFS4_VERIFIER_SIZE);
memcpy(unconf->cid_verifier, verifier, sizeof(NFS4_write_verifier));
unconf->cid_cb.v40.cb_program = arg_SETCLIENTID4->callback.cb_program;
unconf->cid_cb.v40.cb_callback_ident = arg_SETCLIENTID4->callback_ident;
rc = nfs_client_id_insert(unconf);
if (rc != CLIENT_ID_SUCCESS) {
/* Record is already freed, return. */
res_SETCLIENTID4->status = clientid_error_to_nfsstat(rc);
goto out;
}
if (isDebug(COMPONENT_CLIENTID)) {
char str[HASHTABLE_DISPLAY_STRLEN];
sprint_mem(str_verifier, verifier, NFS4_VERIFIER_SIZE);
display_client_id_rec(unconf, str);
LogDebug(COMPONENT_CLIENTID, "SETCLIENTID reply Verifier=%s %s",
str_verifier, str);
}
res_SETCLIENTID4->status = NFS4_OK;
res_SETCLIENTID4->SETCLIENTID4res_u.resok4.clientid = clientid;
memcpy(res_SETCLIENTID4->SETCLIENTID4res_u.resok4.setclientid_confirm,
&verifier, NFS4_VERIFIER_SIZE);
out:
pthread_mutex_unlock(&client_record->cr_mutex);
/* Release our reference to the client record */
dec_client_record_ref(client_record);
return res_SETCLIENTID4->status;
}
int nfs41_op_exchange_id(struct nfs_argop4 *op,
compound_data_t * data, struct nfs_resop4 *resp)
{
char str_verifier[NFS4_VERIFIER_SIZE * 2 + 1];
char str_client[NFS4_OPAQUE_LIMIT * 2 + 1];
nfs_client_record_t * pclient_record;
nfs_client_id_t * pconf;
nfs_client_id_t * punconf;
int rc;
int len;
char * temp;
bool_t update;
const char * update_str;
log_components_t component = COMPONENT_CLIENTID;
#if 0 /** @todo: plante le client sous windows. Ai-je réellement besoin de cela ???? */
/* Check flags value (test EID4) */
if(arg_EXCHANGE_ID4.eia_flags & all_eia_flags != arg_EXCHANGE_ID4.eia_flags)
{
res_EXCHANGE_ID4.eir_status = NFS4ERR_INVAL;
return res_EXCHANGE_ID4.eir_status;
}
#endif
if(isDebug(COMPONENT_SESSIONS))
component = COMPONENT_SESSIONS;
#define arg_EXCHANGE_ID4 op->nfs_argop4_u.opexchange_id
#define res_EXCHANGE_ID4 resp->nfs_resop4_u.opexchange_id
#define res_EXCHANGE_ID4_ok resp->nfs_resop4_u.opexchange_id.EXCHANGE_ID4res_u.eir_resok4
resp->resop = NFS4_OP_EXCHANGE_ID;
update = (arg_EXCHANGE_ID4.eia_flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) != 0;
if(isDebug(component))
{
DisplayOpaqueValue(arg_EXCHANGE_ID4.eia_clientowner.co_ownerid.co_ownerid_val,
arg_EXCHANGE_ID4.eia_clientowner.co_ownerid.co_ownerid_len,
str_client);
sprint_mem(str_verifier,
arg_EXCHANGE_ID4.eia_clientowner.co_verifier,
NFS4_VERIFIER_SIZE);
update_str = update ? "UPDATE" : "NO UPDATE";
}
LogDebug(component,
"EXCHANGE_ID Client addr=%s id=%s verf=%s %s --------------------",
data->pworker->hostaddr_str,
str_client, str_verifier, update_str);
/* Do we already have one or more records for client id (x)? */
pclient_record = get_client_record(arg_EXCHANGE_ID4.eia_clientowner.co_ownerid.co_ownerid_val,
arg_EXCHANGE_ID4.eia_clientowner.co_ownerid.co_ownerid_len);
if(pclient_record == NULL)
{
/* Some major failure */
LogCrit(component,
"EXCHANGE_ID failed");
res_EXCHANGE_ID4.eir_status = NFS4ERR_SERVERFAULT;
return res_EXCHANGE_ID4.eir_status;
}
/*
* The following checks are based on RFC5661
*
* This attempts to implement the logic described in 18.35.4. IMPLEMENTATION
*/
P(pclient_record->cr_mutex);
if(isFullDebug(COMPONENT_CLIENTID))
{
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_record(pclient_record, str);
LogFullDebug(COMPONENT_CLIENTID,
"Client Record %s cr_pconfirmed_id=%p cr_punconfirmed_id=%p",
str,
pclient_record->cr_pconfirmed_id,
pclient_record->cr_punconfirmed_id);
}
pconf = pclient_record->cr_pconfirmed_id;
if(pconf != NULL)
{
/* Need a reference to the confirmed record for below */
inc_client_id_ref(pconf);
}
if(pconf != NULL && !update)
{
/* EXCHGID4_FLAG_UPD_CONFIRMED_REC_A not set */
/** @todo FSF: old code ifdefed out nfs_compare_clientcred with _NFSV4_COMPARE_CRED_IN_EXCHANGE_ID */
if(!nfs_compare_clientcred(&pconf->cid_credential, &data->credential) ||
!cmp_sockaddr(&pconf->cid_client_addr,
&data->pworker->hostaddr,
IGNORE_PORT))
{
/** @todo FSF: should also check if there is no state */
P(pconf->cid_mutex);
if(valid_lease(pconf))
{
V(pconf->cid_mutex);
/* CASE 3, client collisions, old clientid is expired */
if(isDebug(COMPONENT_CLIENTID))
{
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(pconf, str);
LogDebug(COMPONENT_CLIENTID,
"Expiring %s",
str);
}
/* Expire clientid and release our reference. */
nfs_client_id_expire(pconf);
dec_client_id_ref(pconf);
pconf = NULL;
}
else
{
V(pconf->cid_mutex);
/* CASE 3, client collisions, old clientid is not expired */
if(isDebug(component))
{
char confirmed_addr[SOCK_NAME_MAX];
sprint_sockip(&pconf->cid_client_addr, confirmed_addr, sizeof(confirmed_addr));
LogDebug(component,
"Confirmed ClientId %"PRIx64"->'%s': Principals do not match... confirmed addr=%s Return NFS4ERR_CLID_INUSE",
pconf->cid_clientid, str_client, confirmed_addr);
}
res_EXCHANGE_ID4.eir_status = NFS4ERR_CLID_INUSE;
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(pconf);
goto out;
}
}
else if(memcmp(arg_EXCHANGE_ID4.eia_clientowner.co_verifier,
pconf->cid_incoming_verifier,
NFS4_VERIFIER_SIZE) == 0)
{
/* CASE 2, Non-Update on Existing Client ID */
/* Return what was last returned without changing any refcounts */
LogDebug(COMPONENT_CLIENTID,
"Non-update of confirmed ClientId %"PRIx64"->%s",
pconf->cid_clientid, str_client);
punconf = pconf;
goto return_ok;
}
else
{
/* CASE 5, client restart */
/** @todo FSF: expire old clientid? */
LogDebug(component,
"Restarted ClientId %"PRIx64"->%s",
pconf->cid_clientid, str_client);
}
}
else if(pconf != NULL)
{
/* EXCHGID4_FLAG_UPD_CONFIRMED_REC_A set */
if(memcmp(arg_EXCHANGE_ID4.eia_clientowner.co_verifier,
pconf->cid_incoming_verifier,
NFS4_VERIFIER_SIZE) == 0)
{
/** @todo FSF: old code ifdefed out nfs_compare_clientcred with _NFSV4_COMPARE_CRED_IN_EXCHANGE_ID */
if(!nfs_compare_clientcred(&pconf->cid_credential, &data->credential) ||
!cmp_sockaddr(&pconf->cid_client_addr,
&data->pworker->hostaddr,
IGNORE_PORT))
{
/* CASE 9, Update but wrong principal */
if(isDebug(component))
{
char confirmed_addr[SOCK_NAME_MAX];
sprint_sockip(&pconf->cid_client_addr, confirmed_addr, sizeof(confirmed_addr));
LogDebug(component,
"Confirmed ClientId %"PRIx64"->'%s': Principals do not match... confirmed addr=%s Return NFS4ERR_PERM",
pconf->cid_clientid, str_client, confirmed_addr);
}
res_EXCHANGE_ID4.eir_status = NFS4ERR_PERM;
}
else
{
/* CASE 6, Update */
/** @todo: this is not implemented, the things it updates aren't even tracked */
LogMajor(component,
"EXCHANGE_ID Update not supported");
res_EXCHANGE_ID4.eir_status = NFS4ERR_NOTSUPP;
}
}
else
{
/* CASE 8, Update but wrong verifier */
if(isDebug(component))
{
char str_old_verifier[NFS4_VERIFIER_SIZE * 2 + 1];
sprint_mem(str_old_verifier,
pconf->cid_incoming_verifier,
NFS4_VERIFIER_SIZE);
LogDebug(component,
"Confirmed clientid %"PRIx64"->'%s': Verifiers do not match... confirmed verifier=%s",
pconf->cid_clientid, str_client, str_old_verifier);
}
res_EXCHANGE_ID4.eir_status = NFS4ERR_NOT_SAME;
}
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(pconf);
goto out;
}
else if(pconf == NULL && update)
{
LogDebug(component,
"No confirmed clientid to update for %s",
str_client);
res_EXCHANGE_ID4.eir_status = NFS4ERR_NOENT;
goto out;
}
/* At this point, no matter what the case was above, we should remove any
* pre-existing unconfirmed record.
*/
punconf = pclient_record->cr_punconfirmed_id;
if(punconf != NULL)
{
/* CASE 4, replacement of unconfirmed record */
/* Delete the unconfirmed clientid record */
if(isDebug(COMPONENT_CLIENTID))
{
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(punconf, str);
LogDebug(COMPONENT_CLIENTID,
"Replacing %s",
str);
}
/* unhash the clientid record */
remove_unconfirmed_client_id(punconf);
}
/* Now we can proceed to build the new unconfirmed record. We have determined
* the clientid and setclientid_confirm values above.
*/
punconf = create_client_id(0,
pclient_record,
&data->pworker->hostaddr,
&data->credential);
if(punconf == NULL)
{
/* Error already logged, return */
res_EXCHANGE_ID4.eir_status = NFS4ERR_RESOURCE;
goto out;
}
memcpy(punconf->cid_incoming_verifier,
arg_EXCHANGE_ID4.eia_clientowner.co_verifier,
NFS4_VERIFIER_SIZE);
if(gethostname(punconf->cid_server_owner,
sizeof(punconf->cid_server_owner)) == -1)
{
/* Free the clientid record and return */
free_client_id(punconf);
res_EXCHANGE_ID4.eir_status = NFS4ERR_SERVERFAULT;
goto out;
}
snprintf(punconf->cid_server_scope,
sizeof(punconf->cid_server_scope),
"%s_NFS-Ganesha",
punconf->cid_server_owner);
rc = nfs_client_id_insert(punconf);
if(rc != CLIENT_ID_SUCCESS)
{
/* Record is already freed, return. */
res_EXCHANGE_ID4.eir_status = clientid_error_to_nfsstat(rc);
goto out;
}
return_ok:
/* Build the reply */
res_EXCHANGE_ID4_ok.eir_clientid = punconf->cid_clientid;
res_EXCHANGE_ID4_ok.eir_sequenceid = punconf->cid_create_session_sequence;
#if defined(_USE_FSALMDS) && defined(_USE_FSALDS)
res_EXCHANGE_ID4_ok.eir_flags = EXCHGID4_FLAG_USE_PNFS_MDS |
EXCHGID4_FLAG_USE_PNFS_DS |
EXCHGID4_FLAG_SUPP_MOVED_REFER;
#elif defined(_USE_FSALMDS)
res_EXCHANGE_ID4_ok.eir_flags = EXCHGID4_FLAG_USE_PNFS_MDS |
EXCHGID4_FLAG_SUPP_MOVED_REFER;
#elif defined(_USE_FSALDS)
res_EXCHANGE_ID4_ok.eir_flags = EXCHGID4_FLAG_USE_PNFS_DS |
EXCHGID4_FLAG_SUPP_MOVED_REFER;
#elif defined(_USE_DS)
res_EXCHANGE_ID4_ok.eir_flags = EXCHGID4_FLAG_USE_PNFS_MDS |
EXCHGID4_FLAG_USE_PNFS_DS |
EXCHGID4_FLAG_SUPP_MOVED_REFER;
#else
res_EXCHANGE_ID4_ok.eir_flags = EXCHGID4_FLAG_USE_NON_PNFS |
EXCHGID4_FLAG_SUPP_MOVED_REFER;
#endif
res_EXCHANGE_ID4_ok.eir_state_protect.spr_how = SP4_NONE;
len = strlen(punconf->cid_server_owner);
temp = gsh_malloc(len);
if(temp == NULL)
{
LogDebug(component,
"Could not allocate memory for so_major_id in response");
/** @todo FSF: not the best way to handle this but keeps from crashing */
len = 0;
}
else
memcpy(temp, punconf->cid_server_owner, len);
res_EXCHANGE_ID4_ok.eir_server_owner.so_major_id.so_major_id_len = len;
res_EXCHANGE_ID4_ok.eir_server_owner.so_major_id.so_major_id_val = temp;
res_EXCHANGE_ID4_ok.eir_server_owner.so_minor_id = 0;
len = strlen(punconf->cid_server_scope);
temp = gsh_malloc(len);
if(temp == NULL)
{
LogDebug(component,
"Could not allocate memory for eir_server_scope in response");
/** @todo FSF: not the best way to handle this but keeps from crashing */
len = 0;
}
else
memcpy(temp, punconf->cid_server_scope, len);
res_EXCHANGE_ID4_ok.eir_server_scope.eir_server_scope_len = len;
res_EXCHANGE_ID4_ok.eir_server_scope.eir_server_scope_val = temp;
res_EXCHANGE_ID4_ok.eir_server_impl_id.eir_server_impl_id_len = 0;
res_EXCHANGE_ID4_ok.eir_server_impl_id.eir_server_impl_id_val = NULL;
if(isDebug(COMPONENT_CLIENTID))
{
char str[HASHTABLE_DISPLAY_STRLEN];
sprint_mem(str_verifier,
arg_EXCHANGE_ID4.eia_clientowner.co_verifier,
NFS4_VERIFIER_SIZE);
display_client_id_rec(punconf, str);
LogDebug(COMPONENT_CLIENTID,
"EXCHANGE_ID reply Verifier=%s %s",
str_verifier, str);
}
res_EXCHANGE_ID4.eir_status = NFS4_OK;
out:
V(pclient_record->cr_mutex);
/* Release our reference to the client record */
dec_client_record_ref(pclient_record);
return res_EXCHANGE_ID4.eir_status;
} /* nfs41_op_exchange_id */
int nfs4_op_setclientid_confirm(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
SETCLIENTID_CONFIRM4args * const arg_SETCLIENTID_CONFIRM4 =
&op->nfs_argop4_u.opsetclientid_confirm;
SETCLIENTID_CONFIRM4res * const res_SETCLIENTID_CONFIRM4 =
&resp->nfs_resop4_u.opsetclientid_confirm;
nfs_client_id_t *conf = NULL;
nfs_client_id_t *unconf = NULL;
nfs_client_record_t *client_record;
clientid4 clientid = 0;
char str_verifier[NFS4_VERIFIER_SIZE * 2 + 1];
const char *str_client_addr = "(unknown)";
/* The client name, for gratuitous logging */
char str_client[CLIENTNAME_BUFSIZE];
/* Display buffer for client name */
struct display_buffer dspbuf_client = {
sizeof(str_client), str_client, str_client};
/* The clientid4 broken down into fields */
char str_clientid4[DISPLAY_CLIENTID_SIZE];
/* Display buffer for clientid4 */
struct display_buffer dspbuf_clientid4 = {
sizeof(str_clientid4), str_clientid4, str_clientid4};
int rc;
/* Make sure str_client is always printable even
* if log level changes midstream.
*/
display_printf(&dspbuf_client, "(unknown)");
display_reset_buffer(&dspbuf_client);
resp->resop = NFS4_OP_SETCLIENTID_CONFIRM;
res_SETCLIENTID_CONFIRM4->status = NFS4_OK;
clientid = arg_SETCLIENTID_CONFIRM4->clientid;
display_clientid(&dspbuf_clientid4, clientid);
if (data->minorversion > 0) {
res_SETCLIENTID_CONFIRM4->status = NFS4ERR_NOTSUPP;
return res_SETCLIENTID_CONFIRM4->status;
}
if (op_ctx->client != NULL)
str_client_addr = op_ctx->client->hostaddr_str;
if (isDebug(COMPONENT_CLIENTID)) {
sprint_mem(str_verifier,
arg_SETCLIENTID_CONFIRM4->setclientid_confirm,
NFS4_VERIFIER_SIZE);
} else {
str_verifier[0] = '\0';
}
LogDebug(COMPONENT_CLIENTID,
"SETCLIENTID_CONFIRM client addr=%s clientid=%s setclientid_confirm=%s",
str_client_addr, str_clientid4, str_verifier);
/* First try to look up unconfirmed record */
rc = nfs_client_id_get_unconfirmed(clientid, &unconf);
if (rc == CLIENT_ID_SUCCESS) {
client_record = unconf->cid_client_record;
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogFullDebug(COMPONENT_CLIENTID, "Found %s", str);
}
} else {
rc = nfs_client_id_get_confirmed(clientid, &conf);
if (rc != CLIENT_ID_SUCCESS) {
/* No record whatsoever of this clientid */
LogDebug(COMPONENT_CLIENTID,
"%s clientid = %s",
clientid_error_to_str(rc), str_clientid4);
res_SETCLIENTID_CONFIRM4->status =
clientid_error_to_nfsstat_no_expire(rc);
return res_SETCLIENTID_CONFIRM4->status;
}
client_record = conf->cid_client_record;
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogFullDebug(COMPONENT_CLIENTID, "Found %s", str);
}
}
PTHREAD_MUTEX_lock(&client_record->cr_mutex);
inc_client_record_ref(client_record);
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_record(&dspbuf, client_record);
LogFullDebug(COMPONENT_CLIENTID,
"Client Record %s cr_confirmed_rec=%p cr_unconfirmed_rec=%p",
str,
client_record->cr_confirmed_rec,
client_record->cr_unconfirmed_rec);
}
/* At this point one and only one of pconf and punconf is non-NULL */
if (unconf != NULL) {
/* First must match principal */
if (!nfs_compare_clientcred(&unconf->cid_credential,
&data->credential)
|| op_ctx->client == NULL
|| unconf->gsh_client == NULL
|| op_ctx->client != unconf->gsh_client) {
if (isDebug(COMPONENT_CLIENTID)) {
char *unconfirmed_addr = "(unknown)";
if (unconf->gsh_client != NULL)
unconfirmed_addr =
unconf->gsh_client->hostaddr_str;
LogDebug(COMPONENT_CLIENTID,
"Unconfirmed ClientId %s->'%s': Principals do not match... unconfirmed addr=%s Return NFS4ERR_CLID_INUSE",
str_clientid4,
str_client_addr,
unconfirmed_addr);
}
res_SETCLIENTID_CONFIRM4->status = NFS4ERR_CLID_INUSE;
dec_client_id_ref(unconf);
goto out;
} else if (unconf->cid_confirmed == CONFIRMED_CLIENT_ID &&
memcmp(unconf->cid_verifier,
arg_SETCLIENTID_CONFIRM4->setclientid_confirm,
NFS4_VERIFIER_SIZE) == 0) {
/* We must have raced with another
SETCLIENTID_CONFIRM */
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {
sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogDebug(COMPONENT_CLIENTID,
"Race against confirm for %s", str);
}
res_SETCLIENTID_CONFIRM4->status = NFS4_OK;
dec_client_id_ref(unconf);
goto out;
} else if (unconf->cid_confirmed != UNCONFIRMED_CLIENT_ID) {
/* We raced with another thread that dealt
* with this unconfirmed record. Release our
* reference, and pretend we didn't find a
* record.
*/
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {
sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogDebug(COMPONENT_CLIENTID,
"Race against expire for %s", str);
}
res_SETCLIENTID_CONFIRM4->status =
NFS4ERR_STALE_CLIENTID;
dec_client_id_ref(unconf);
goto out;
}
}
if (conf != NULL) {
if (isDebug(COMPONENT_CLIENTID) && conf != NULL)
display_clientid_name(&dspbuf_client, conf);
/* First must match principal */
if (!nfs_compare_clientcred(&conf->cid_credential,
&data->credential)
|| op_ctx->client == NULL
|| conf->gsh_client == NULL
|| op_ctx->client != conf->gsh_client) {
if (isDebug(COMPONENT_CLIENTID)) {
char *confirmed_addr = "(unknown)";
if (conf->gsh_client != NULL)
confirmed_addr =
conf->gsh_client->hostaddr_str;
LogDebug(COMPONENT_CLIENTID,
"Confirmed ClientId %s->%s addr=%s: Principals do not match... confirmed addr=%s Return NFS4ERR_CLID_INUSE",
str_clientid4,
str_client,
str_client_addr,
confirmed_addr);
}
res_SETCLIENTID_CONFIRM4->status = NFS4ERR_CLID_INUSE;
} else if (memcmp(
conf->cid_verifier,
arg_SETCLIENTID_CONFIRM4->setclientid_confirm,
NFS4_VERIFIER_SIZE) == 0) {
/* In this case, the record was confirmed and
* we have received a retry
*/
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {
sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogDebug(COMPONENT_CLIENTID,
"Retry confirm for %s", str);
}
res_SETCLIENTID_CONFIRM4->status = NFS4_OK;
} else {
/* This is a case not covered... Return
* NFS4ERR_CLID_INUSE
*/
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {
sizeof(str), str, str};
char str_conf_verifier[NFS4_VERIFIER_SIZE * 2 +
1];
sprint_mem(str_conf_verifier,
conf->cid_verifier,
NFS4_VERIFIER_SIZE);
display_client_id_rec(&dspbuf, conf);
LogDebug(COMPONENT_CLIENTID,
"Confirm verifier=%s doesn't match verifier=%s for %s",
str_conf_verifier, str_verifier, str);
}
res_SETCLIENTID_CONFIRM4->status = NFS4ERR_CLID_INUSE;
}
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(conf);
goto out;
}
/* We don't need to do any further principal checks, we can't
* have a confirmed clientid record with a different principal
* than the unconfirmed record. Also, at this point, we have
* a matching unconfirmed clientid (punconf != NULL and pconf
* == NULL).
*/
/* Make sure we have a reference to the confirmed clientid
* record if any
*/
if (conf == NULL) {
conf = client_record->cr_confirmed_rec;
if (isDebug(COMPONENT_CLIENTID) && conf != NULL)
display_clientid_name(&dspbuf_client, conf);
/* Need a reference to the confirmed record for below */
if (conf != NULL)
inc_client_id_ref(conf);
}
if (conf != NULL && conf->cid_clientid != clientid) {
/* Old confirmed record - need to expire it */
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogDebug(COMPONENT_CLIENTID, "Expiring %s", str);
}
/* Expire clientid and release our reference. */
nfs_client_id_expire(conf, false);
dec_client_id_ref(conf);
conf = NULL;
}
if (conf != NULL) {
/* At this point we are updating the confirmed
* clientid. Update the confirmed record from the
* unconfirmed record.
*/
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogFullDebug(COMPONENT_CLIENTID, "Updating from %s",
str);
}
/* Copy callback information into confirmed clientid record */
memcpy(conf->cid_cb.v40.cb_client_r_addr,
unconf->cid_cb.v40.cb_client_r_addr,
sizeof(conf->cid_cb.v40.cb_client_r_addr));
conf->cid_cb.v40.cb_addr = unconf->cid_cb.v40.cb_addr;
conf->cid_cb.v40.cb_program = unconf->cid_cb.v40.cb_program;
conf->cid_cb.v40.cb_callback_ident =
unconf->cid_cb.v40.cb_callback_ident;
nfs_rpc_destroy_chan(&conf->cid_cb.v40.cb_chan);
memcpy(conf->cid_verifier, unconf->cid_verifier,
NFS4_VERIFIER_SIZE);
/* unhash the unconfirmed clientid record */
remove_unconfirmed_client_id(unconf);
/* Release our reference to the unconfirmed entry */
dec_client_id_ref(unconf);
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogDebug(COMPONENT_CLIENTID, "Updated %s", str);
}
/* Check and update call back channel state */
if (nfs_param.nfsv4_param.allow_delegations &&
nfs_test_cb_chan(conf) != RPC_SUCCESS) {
set_cb_chan_down(conf, true);
LogCrit(COMPONENT_CLIENTID,
"setclid confirm: Callback channel is down");
} else {
set_cb_chan_down(conf, false);
LogDebug(COMPONENT_CLIENTID,
"setclid confirm: Callback channel is UP");
}
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(conf);
} else {
/* This is a new clientid */
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogFullDebug(COMPONENT_CLIENTID,
"Confirming new %s",
str);
}
rc = nfs_client_id_confirm(unconf, COMPONENT_CLIENTID);
if (rc != CLIENT_ID_SUCCESS) {
res_SETCLIENTID_CONFIRM4->status =
clientid_error_to_nfsstat_no_expire(rc);
LogEvent(COMPONENT_CLIENTID,
"FAILED to confirm client");
/* Release our reference to the unconfirmed record */
dec_client_id_ref(unconf);
goto out;
}
/* check if the client can perform reclaims */
nfs4_chk_clid(unconf);
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogDebug(COMPONENT_CLIENTID, "Confirmed %s", str);
}
/* Check and update call back channel state */
if (nfs_param.nfsv4_param.allow_delegations &&
nfs_test_cb_chan(unconf) != RPC_SUCCESS) {
set_cb_chan_down(unconf, true);
LogCrit(COMPONENT_CLIENTID,
"setclid confirm: Callback channel is down");
} else {
set_cb_chan_down(unconf, false);
LogDebug(COMPONENT_CLIENTID,
"setclid confirm: Callback channel is UP");
}
/* Release our reference to the now confirmed record */
dec_client_id_ref(unconf);
}
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_record(&dspbuf, client_record);
LogFullDebug(COMPONENT_CLIENTID,
"Client Record %s cr_confirmed_rec=%p cr_unconfirmed_rec=%p",
str,
client_record->cr_confirmed_rec,
client_record->cr_unconfirmed_rec);
}
/* Successful exit */
res_SETCLIENTID_CONFIRM4->status = NFS4_OK;
out:
PTHREAD_MUTEX_unlock(&client_record->cr_mutex);
/* Release our reference to the client record and return */
dec_client_record_ref(client_record);
return res_SETCLIENTID_CONFIRM4->status;
}
/**
* @brief Display NFSv4 owner
*
* @param[in] owner The state owner
* @param[out] str Output string
*
* @return the bytes remaining in the buffer.
*/
int display_nfs4_owner(struct display_buffer *dspbuf, state_owner_t *owner)
{
int b_left;
if (owner == NULL)
return display_cat(dspbuf, "<NULL>");
b_left = display_printf(dspbuf, "%s %p:",
state_owner_type_to_str(owner->so_type),
owner);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, " clientid={");
if (b_left <= 0)
return b_left;
b_left = display_client_id_rec(dspbuf, owner->so_owner.so_nfs4_owner
.so_clientrec);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, "} owner=");
if (b_left <= 0)
return b_left;
b_left = display_opaque_value(dspbuf,
owner->so_owner_val,
owner->so_owner_len);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, " confirmed=%u seqid=%u",
owner->so_owner.so_nfs4_owner.so_confirmed,
owner->so_owner.so_nfs4_owner.so_seqid);
if (b_left <= 0)
return b_left;
if (owner->so_owner.so_nfs4_owner.so_related_owner != NULL) {
b_left = display_printf(dspbuf, " related_owner={");
if (b_left <= 0)
return b_left;
b_left =
display_nfs4_owner(dspbuf, owner->so_owner
.so_nfs4_owner.so_related_owner);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, "}");
if (b_left <= 0)
return b_left;
}
return display_printf(dspbuf, " refcount=%d",
atomic_fetch_int32_t(&owner->so_refcount));
}
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 */
int nfs4_op_create_session(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
/* Result of looking up the clientid in the confirmed ID
table */
nfs_client_id_t *conf = NULL; /* XXX these are not good names */
/* Result of looking up the clientid in the unconfirmed ID
table */
nfs_client_id_t *unconf = NULL;
/* The found clientid (either one of the preceding) */
nfs_client_id_t *found = NULL;
/* The found client record */
nfs_client_record_t *client_record;
/* The created session */
nfs41_session_t *nfs41_session = NULL;
/* Client supplied clientid */
clientid4 clientid = 0;
/* The client address as a string, for gratuitous logging */
const char *str_client_addr = "(unknown)";
/* The client name, for gratuitous logging */
char str_client[CLIENTNAME_BUFSIZE];
/* Display buffer for client name */
struct display_buffer dspbuf_client = {
sizeof(str_client), str_client, str_client
};
/* The clientid4 broken down into fields */
char str_clientid4[DISPLAY_CLIENTID_SIZE];
/* Display buffer for clientid4 */
struct display_buffer dspbuf_clientid4 = {
sizeof(str_clientid4), str_clientid4, str_clientid4
};
/* Return code from clientid calls */
int i, rc = 0;
/* Component for logging */
log_components_t component = COMPONENT_CLIENTID;
/* Abbreviated alias for arguments */
CREATE_SESSION4args * const arg_CREATE_SESSION4 =
&op->nfs_argop4_u.opcreate_session;
/* Abbreviated alias for response */
CREATE_SESSION4res * const res_CREATE_SESSION4 =
&resp->nfs_resop4_u.opcreate_session;
/* Abbreviated alias for successful response */
CREATE_SESSION4resok * const res_CREATE_SESSION4ok =
&res_CREATE_SESSION4->CREATE_SESSION4res_u.csr_resok4;
/* Make sure str_client is always printable even
* if log level changes midstream.
*/
display_printf(&dspbuf_client, "(unknown)");
display_reset_buffer(&dspbuf_client);
if (op_ctx->client != NULL)
str_client_addr = op_ctx->client->hostaddr_str;
if (isDebug(COMPONENT_SESSIONS))
component = COMPONENT_SESSIONS;
resp->resop = NFS4_OP_CREATE_SESSION;
res_CREATE_SESSION4->csr_status = NFS4_OK;
clientid = arg_CREATE_SESSION4->csa_clientid;
display_clientid(&dspbuf_clientid4, clientid);
if (data->minorversion == 0)
return res_CREATE_SESSION4->csr_status = NFS4ERR_INVAL;
LogDebug(component,
"CREATE_SESSION client addr=%s clientid=%s -------------------",
str_client_addr, str_clientid4);
/* First try to look up unconfirmed record */
rc = nfs_client_id_get_unconfirmed(clientid, &unconf);
if (rc == CLIENT_ID_SUCCESS) {
client_record = unconf->cid_client_record;
found = unconf;
} else {
rc = nfs_client_id_get_confirmed(clientid, &conf);
if (rc != CLIENT_ID_SUCCESS) {
/* No record whatsoever of this clientid */
LogDebug(component,
"%s clientid=%s",
clientid_error_to_str(rc), str_clientid4);
if (rc == CLIENT_ID_EXPIRED)
rc = CLIENT_ID_STALE;
res_CREATE_SESSION4->csr_status =
clientid_error_to_nfsstat_no_expire(rc);
return res_CREATE_SESSION4->csr_status;
}
client_record = conf->cid_client_record;
found = conf;
}
PTHREAD_MUTEX_lock(&client_record->cr_mutex);
inc_client_record_ref(client_record);
if (isFullDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_record(&dspbuf, client_record);
LogFullDebug(component,
"Client Record %s cr_confirmed_rec=%p cr_unconfirmed_rec=%p",
str,
client_record->cr_confirmed_rec,
client_record->cr_unconfirmed_rec);
}
/* At this point one and only one of conf and unconf is
* non-NULL, and found also references the single clientid
* record that was found.
*/
LogDebug(component,
"CREATE_SESSION clientid=%s csa_sequence=%" PRIu32
" clientid_cs_seq=%" PRIu32 " data_oppos=%d data_use_drc=%d",
str_clientid4, arg_CREATE_SESSION4->csa_sequence,
found->cid_create_session_sequence, data->oppos,
data->use_drc);
if (isFullDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, found);
LogFullDebug(component, "Found %s", str);
}
data->use_drc = false;
if (data->oppos == 0) {
/* Special case : the request is used without use of
* OP_SEQUENCE
*/
if ((arg_CREATE_SESSION4->csa_sequence + 1 ==
found->cid_create_session_sequence)
&& (found->cid_create_session_slot.cache_used)) {
data->use_drc = true;
data->cached_res =
&found->cid_create_session_slot.cached_result;
res_CREATE_SESSION4->csr_status = NFS4_OK;
dec_client_id_ref(found);
LogDebug(component,
"CREATE_SESSION replay=%p special case",
data->cached_res);
goto out;
} else if (arg_CREATE_SESSION4->csa_sequence !=
found->cid_create_session_sequence) {
res_CREATE_SESSION4->csr_status =
NFS4ERR_SEQ_MISORDERED;
dec_client_id_ref(found);
LogDebug(component,
"CREATE_SESSION returning NFS4ERR_SEQ_MISORDERED");
goto out;
}
}
if (unconf != NULL) {
/* First must match principal */
if (!nfs_compare_clientcred(&unconf->cid_credential,
&data->credential)) {
if (isDebug(component)) {
char *unconfirmed_addr = "(unknown)";
if (unconf->gsh_client != NULL)
unconfirmed_addr =
unconf->gsh_client->hostaddr_str;
LogDebug(component,
"Unconfirmed ClientId %s->'%s': Principals do not match... unconfirmed addr=%s Return NFS4ERR_CLID_INUSE",
str_clientid4,
str_client_addr,
unconfirmed_addr);
}
dec_client_id_ref(unconf);
res_CREATE_SESSION4->csr_status = NFS4ERR_CLID_INUSE;
goto out;
}
}
if (conf != NULL) {
if (isDebug(component) && conf != NULL)
display_clientid_name(&dspbuf_client, conf);
/* First must match principal */
if (!nfs_compare_clientcred(&conf->cid_credential,
&data->credential)) {
if (isDebug(component)) {
char *confirmed_addr = "(unknown)";
if (conf->gsh_client != NULL)
confirmed_addr =
conf->gsh_client->hostaddr_str;
LogDebug(component,
"Confirmed ClientId %s->%s addr=%s: Principals do not match... confirmed addr=%s Return NFS4ERR_CLID_INUSE",
str_clientid4, str_client,
str_client_addr, confirmed_addr);
}
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(conf);
res_CREATE_SESSION4->csr_status = NFS4ERR_CLID_INUSE;
goto out;
}
/* In this case, the record was confirmed proceed with
CREATE_SESSION */
}
/* We don't need to do any further principal checks, we can't
* have a confirmed clientid record with a different principal
* than the unconfirmed record.
*/
/* At this point, we need to try and create the session before
* we modify the confirmed and/or unconfirmed clientid
* records.
*/
/* Check flags value (test CSESS15) */
if (arg_CREATE_SESSION4->csa_flags &
~(CREATE_SESSION4_FLAG_PERSIST |
CREATE_SESSION4_FLAG_CONN_BACK_CHAN |
CREATE_SESSION4_FLAG_CONN_RDMA)) {
LogDebug(component,
"Invalid create session flags %" PRIu32,
arg_CREATE_SESSION4->csa_flags);
dec_client_id_ref(found);
res_CREATE_SESSION4->csr_status = NFS4ERR_INVAL;
goto out;
}
/* Record session related information at the right place */
nfs41_session = pool_alloc(nfs41_session_pool);
if (nfs41_session == NULL) {
LogCrit(component, "Could not allocate memory for a session");
dec_client_id_ref(found);
res_CREATE_SESSION4->csr_status = NFS4ERR_SERVERFAULT;
goto out;
}
nfs41_session->clientid = clientid;
nfs41_session->clientid_record = found;
nfs41_session->refcount = 2; /* sentinel ref + call path ref */
nfs41_session->fore_channel_attrs =
arg_CREATE_SESSION4->csa_fore_chan_attrs;
nfs41_session->back_channel_attrs =
arg_CREATE_SESSION4->csa_back_chan_attrs;
nfs41_session->xprt = data->req->rq_xprt;
nfs41_session->flags = false;
nfs41_session->cb_program = 0;
PTHREAD_MUTEX_init(&nfs41_session->cb_mutex, NULL);
PTHREAD_COND_init(&nfs41_session->cb_cond, NULL);
for (i = 0; i < NFS41_NB_SLOTS; i++)
PTHREAD_MUTEX_init(&nfs41_session->slots[i].lock, NULL);
/* Take reference to clientid record on behalf the session. */
inc_client_id_ref(found);
/* add to head of session list (encapsulate?) */
PTHREAD_MUTEX_lock(&found->cid_mutex);
glist_add(&found->cid_cb.v41.cb_session_list,
&nfs41_session->session_link);
PTHREAD_MUTEX_unlock(&found->cid_mutex);
/* Set ca_maxrequests */
nfs41_session->fore_channel_attrs.ca_maxrequests = NFS41_NB_SLOTS;
nfs41_Build_sessionid(&clientid, nfs41_session->session_id);
res_CREATE_SESSION4ok->csr_sequence = arg_CREATE_SESSION4->csa_sequence;
/* return the input for wanting of something better (will
* change in later versions)
*/
res_CREATE_SESSION4ok->csr_fore_chan_attrs =
nfs41_session->fore_channel_attrs;
res_CREATE_SESSION4ok->csr_back_chan_attrs =
nfs41_session->back_channel_attrs;
res_CREATE_SESSION4ok->csr_flags = 0;
memcpy(res_CREATE_SESSION4ok->csr_sessionid,
nfs41_session->session_id,
NFS4_SESSIONID_SIZE);
/* Create Session replay cache */
data->cached_res = &found->cid_create_session_slot.cached_result;
found->cid_create_session_slot.cache_used = true;
LogDebug(component, "CREATE_SESSION replay=%p", data->cached_res);
if (!nfs41_Session_Set(nfs41_session)) {
LogDebug(component, "Could not insert session into table");
/* Release the session resources by dropping our reference
* and the sentinel reference.
*/
dec_session_ref(nfs41_session);
dec_session_ref(nfs41_session);
/* Decrement our reference to the clientid record */
dec_client_id_ref(found);
/* Maybe a more precise status would be better */
res_CREATE_SESSION4->csr_status = NFS4ERR_SERVERFAULT;
goto out;
}
/* Make sure we have a reference to the confirmed clientid
record if any */
if (conf == NULL) {
conf = client_record->cr_confirmed_rec;
if (isDebug(component) && conf != NULL)
display_clientid_name(&dspbuf_client, conf);
/* Need a reference to the confirmed record for below */
if (conf != NULL)
inc_client_id_ref(conf);
}
if (conf != NULL && conf->cid_clientid != clientid) {
/* Old confirmed record - need to expire it */
if (isDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogDebug(component, "Expiring %s", str);
}
/* Expire clientid and release our reference. */
nfs_client_id_expire(conf, false);
dec_client_id_ref(conf);
conf = NULL;
}
if (conf != NULL) {
/* At this point we are updating the confirmed
* clientid. Update the confirmed record from the
* unconfirmed record.
*/
display_clientid(&dspbuf_clientid4, conf->cid_clientid);
LogDebug(component,
"Updating clientid %s->%s cb_program=%u",
str_clientid4, str_client,
arg_CREATE_SESSION4->csa_cb_program);
if (unconf != NULL) {
/* unhash the unconfirmed clientid record */
remove_unconfirmed_client_id(unconf);
/* Release our reference to the unconfirmed entry */
dec_client_id_ref(unconf);
}
if (isDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogDebug(component, "Updated %s", str);
}
} else {
/* This is a new clientid */
if (isFullDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogFullDebug(component, "Confirming new %s", str);
}
rc = nfs_client_id_confirm(unconf, component);
if (rc != CLIENT_ID_SUCCESS) {
res_CREATE_SESSION4->csr_status =
clientid_error_to_nfsstat_no_expire(rc);
/* Need to destroy the session */
if (!nfs41_Session_Del(nfs41_session->session_id))
LogDebug(component,
"Oops nfs41_Session_Del failed");
/* Release our reference to the unconfirmed record */
dec_client_id_ref(unconf);
goto out;
}
nfs4_chk_clid(unconf);
conf = unconf;
unconf = NULL;
if (isDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogDebug(component, "Confirmed %s", str);
}
}
conf->cid_create_session_sequence++;
/* Bump the lease timer */
conf->cid_last_renew = time(NULL);
/* Release our reference to the confirmed record */
dec_client_id_ref(conf);
if (isFullDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_record(&dspbuf, client_record);
LogFullDebug(component,
"Client Record %s cr_confirmed_rec=%p cr_unconfirmed_rec=%p",
str,
client_record->cr_confirmed_rec,
client_record->cr_unconfirmed_rec);
}
/* Handle the creation of the back channel, if the client
requested one. */
if (arg_CREATE_SESSION4->csa_flags &
CREATE_SESSION4_FLAG_CONN_BACK_CHAN) {
nfs41_session->cb_program = arg_CREATE_SESSION4->csa_cb_program;
if (nfs_rpc_create_chan_v41(
nfs41_session,
arg_CREATE_SESSION4->csa_sec_parms.csa_sec_parms_len,
arg_CREATE_SESSION4->csa_sec_parms.csa_sec_parms_val)
== 0) {
res_CREATE_SESSION4ok->csr_flags |=
CREATE_SESSION4_FLAG_CONN_BACK_CHAN;
}
}
if (isDebug(component)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_session(&dspbuf, nfs41_session);
LogDebug(component,
"success %s csa_flags 0x%X csr_flags 0x%X",
str, arg_CREATE_SESSION4->csa_flags,
res_CREATE_SESSION4ok->csr_flags);
}
/* Release our reference to the session */
dec_session_ref(nfs41_session);
/* Successful exit */
res_CREATE_SESSION4->csr_status = NFS4_OK;
out:
PTHREAD_MUTEX_unlock(&client_record->cr_mutex);
/* Release our reference to the client record and return */
dec_client_record_ref(client_record);
return res_CREATE_SESSION4->csr_status;
}
static void reap_hash_table(hash_table_t * ht_reap)
{
struct rbt_head * head_rbt;
hash_data_t * pdata = NULL;
uint32_t i;
int v4, rc;
struct rbt_node * pn;
nfs_client_id_t * pclientid;
nfs_client_record_t * precord;
/* For each bucket of the requested hashtable */
for(i = 0; i < ht_reap->parameter.index_size; i++)
{
head_rbt = &ht_reap->partitions[i].rbt;
restart:
/* acquire mutex */
pthread_rwlock_wrlock(&ht_reap->partitions[i].lock);
/* go through all entries in the red-black-tree*/
RBT_LOOP(head_rbt, pn)
{
pdata = RBT_OPAQ(pn);
pclientid = (nfs_client_id_t *)pdata->buffval.pdata;
/*
* little hack: only want to reap v4 clients
* 4.1 initializess this field to '1'
*/
v4 = (pclientid->cid_create_session_sequence == 0);
P(pclientid->cid_mutex);
if(!valid_lease(pclientid) && v4)
{
inc_client_id_ref(pclientid);
/* Take a reference to the client record */
precord = pclientid->cid_client_record;
inc_client_record_ref(precord);
V(pclientid->cid_mutex);
pthread_rwlock_unlock(&ht_reap->partitions[i].lock);
if(isDebug(COMPONENT_CLIENTID))
{
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(pclientid, str);
LogFullDebug(COMPONENT_CLIENTID,
"Expire index %d %s",
i, str);
}
/* Take cr_mutex and expire clientid */
P(precord->cr_mutex);
rc = nfs_client_id_expire(pclientid);
V(precord->cr_mutex);
dec_client_id_ref(pclientid);
dec_client_record_ref(precord);
if(rc)
goto restart;
}
else
{
V(pclientid->cid_mutex);
}
RBT_INCREMENT(pn);
}
pthread_rwlock_unlock(&ht_reap->partitions[i].lock);
}
static int reap_hash_table(hash_table_t *ht_reap)
{
struct rbt_head *head_rbt;
struct hash_data *addr = NULL;
uint32_t i;
int rc;
struct rbt_node *pn;
nfs_client_id_t *pclientid;
nfs_client_record_t *precord;
int count = 0;
struct req_op_context req_ctx;
struct user_cred creds;
/* We need a real context. Make all reaping done
* by root,root
*/
memset(&creds, 0, sizeof(creds));
req_ctx.creds = &creds;
/* For each bucket of the requested hashtable */
for (i = 0; i < ht_reap->parameter.index_size; i++) {
head_rbt = &ht_reap->partitions[i].rbt;
restart:
/* acquire mutex */
PTHREAD_RWLOCK_wrlock(&ht_reap->partitions[i].lock);
/* go through all entries in the red-black-tree */
RBT_LOOP(head_rbt, pn) {
addr = RBT_OPAQ(pn);
pclientid = addr->val.addr;
count++;
pthread_mutex_lock(&pclientid->cid_mutex);
if (!valid_lease(pclientid)) {
inc_client_id_ref(pclientid);
/* Take a reference to the client record */
precord = pclientid->cid_client_record;
inc_client_record_ref(precord);
pthread_mutex_unlock(&pclientid->cid_mutex);
PTHREAD_RWLOCK_unlock(&ht_reap->partitions[i].
lock);
if (isDebug(COMPONENT_CLIENTID)) {
char str[HASHTABLE_DISPLAY_STRLEN];
display_client_id_rec(pclientid, str);
LogFullDebug(COMPONENT_CLIENTID,
"Expire index %d %s", i,
str);
}
/* Take cr_mutex and expire clientid */
pthread_mutex_lock(&precord->cr_mutex);
/**
* @TODO This is incomplete! the context has to be filled in from
* somewhere
*/
memset(&req_ctx, 0, sizeof(req_ctx));
rc = nfs_client_id_expire(pclientid, &req_ctx);
pthread_mutex_unlock(&precord->cr_mutex);
dec_client_id_ref(pclientid);
dec_client_record_ref(precord);
if (rc)
goto restart;
} else {
pthread_mutex_unlock(&pclientid->cid_mutex);
}
RBT_INCREMENT(pn);
}
PTHREAD_RWLOCK_unlock(&ht_reap->partitions[i].lock);
}
int nfs4_op_destroy_clientid(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
DESTROY_CLIENTID4args * const arg_DESTROY_CLIENTID4 =
&op->nfs_argop4_u.opdestroy_clientid;
DESTROY_CLIENTID4res * const res_DESTROY_CLIENTID4 =
&resp->nfs_resop4_u.opdestroy_clientid;
nfs_client_record_t *client_record = NULL;
nfs_client_id_t *conf = NULL, *unconf = NULL, *found = NULL;
clientid4 clientid;
int rc;
resp->resop = NFS4_OP_DESTROY_CLIENTID;
clientid = arg_DESTROY_CLIENTID4->dca_clientid;
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_clientid(&dspbuf, clientid);
LogDebug(COMPONENT_CLIENTID,
"DESTROY_CLIENTID clientid=%s",
str);
}
res_DESTROY_CLIENTID4->dcr_status = NFS4_OK;
/* First try to look up confirmed record */
rc = nfs_client_id_get_confirmed(clientid, &conf);
if (rc == CLIENT_ID_SUCCESS) {
client_record = conf->cid_client_record;
found = conf;
} else {
/* fall back to unconfirmed */
rc = nfs_client_id_get_unconfirmed(clientid, &unconf);
if (rc == CLIENT_ID_SUCCESS) {
client_record = unconf->cid_client_record;
found = unconf;
}
/* handle the perverse case of a clientid being confirmed
* in the above interval */
rc = nfs_client_id_get_confirmed(clientid, &conf);
if (rc == CLIENT_ID_SUCCESS) {
if (found != NULL)
dec_client_id_ref(found);
client_record = conf->cid_client_record;
found = conf;
}
}
/* ref +1 */
if (client_record == NULL) {
/* Fine. We're done. */
res_DESTROY_CLIENTID4->dcr_status = NFS4ERR_STALE_CLIENTID;
goto out;
}
(void) inc_client_record_ref(client_record);
PTHREAD_MUTEX_lock(&client_record->cr_mutex);
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_record(&dspbuf, client_record);
LogFullDebug(COMPONENT_CLIENTID,
"Client Record %s cr_confirmed_rec=%p "
"cr_unconfirmed_rec=%p", str,
client_record->cr_confirmed_rec,
client_record->cr_unconfirmed_rec);
}
/* per Frank, we must check the confirmed and unconfirmed
* state of client_record again now that we hold cr_mutex
*/
conf = client_record->cr_confirmed_rec;
unconf = client_record->cr_unconfirmed_rec;
if ((!conf) && (!unconf)) {
/* We raced a thread destroying clientid, and lost.
* We're done. */
goto cleanup;
}
if (conf) {
/* We MUST NOT destroy a clientid that has nfsv41 sessions or
* state. Since the minorversion is 4.1 or higher, this is
* equivalent to a session check.
*/
PTHREAD_MUTEX_lock(&conf->cid_mutex);
if (!glist_empty(&conf->cid_cb.v41.cb_session_list)) {
res_DESTROY_CLIENTID4->dcr_status =
NFS4ERR_CLIENTID_BUSY;
PTHREAD_MUTEX_unlock(&conf->cid_mutex);
goto cleanup;
}
PTHREAD_MUTEX_unlock(&conf->cid_mutex);
/* Delete the confirmed clientid record. Because we
* have the cr_mutex, we have won any race to deal
* with this clientid record.
*/
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, conf);
LogDebug(COMPONENT_CLIENTID,
"Removing confirmed clientid %s", str);
}
/* unhash the clientid record */
(void)remove_confirmed_client_id(conf);
}
if (unconf) {
/* Delete the unconfirmed clientid record. Because we
* have the cr_mutex, we have won any race to deal
* with this clientid record.
*/
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogDebug(COMPONENT_CLIENTID,
"Removing unconfirmed clientid %s", str);
}
/* unhash the clientid record */
(void)remove_unconfirmed_client_id(unconf);
}
cleanup:
PTHREAD_MUTEX_unlock(&client_record->cr_mutex);
dec_client_record_ref(client_record); /* ref +0 */
if (found != NULL)
dec_client_id_ref(found);
out:
return res_DESTROY_CLIENTID4->dcr_status;
}
int nfs4_op_setclientid(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
SETCLIENTID4args * const arg_SETCLIENTID4 =
&op->nfs_argop4_u.opsetclientid;
SETCLIENTID4res * const res_SETCLIENTID4 =
&resp->nfs_resop4_u.opsetclientid;
clientaddr4 * const res_SETCLIENTID4_INUSE =
&resp->nfs_resop4_u.opsetclientid.SETCLIENTID4res_u.client_using;
char str_verifier[NFS4_VERIFIER_SIZE * 2 + 1];
struct display_buffer dspbuf_verifier = {
sizeof(str_verifier), str_verifier, str_verifier};
char str_client[NFS4_OPAQUE_LIMIT * 2 + 1];
struct display_buffer dspbuf_client = {
sizeof(str_client), str_client, str_client};
const char *str_client_addr = "(unknown)";
/* The clientid4 broken down into fields */
char str_clientid4[DISPLAY_CLIENTID_SIZE];
/* Display buffer for clientid4 */
struct display_buffer dspbuf_clientid4 = {
sizeof(str_clientid4), str_clientid4, str_clientid4};
nfs_client_record_t *client_record;
nfs_client_id_t *conf;
nfs_client_id_t *unconf;
clientid4 clientid;
verifier4 verifier;
int rc;
resp->resop = NFS4_OP_SETCLIENTID;
if (data->minorversion > 0) {
res_SETCLIENTID4->status = NFS4ERR_NOTSUPP;
return res_SETCLIENTID4->status;
}
if (op_ctx->client != NULL)
str_client_addr = op_ctx->client->hostaddr_str;
if (isDebug(COMPONENT_CLIENTID)) {
display_opaque_value(&dspbuf_client,
arg_SETCLIENTID4->client.id.id_val,
arg_SETCLIENTID4->client.id.id_len);
display_opaque_bytes(&dspbuf_verifier,
arg_SETCLIENTID4->client.verifier,
NFS4_VERIFIER_SIZE);
} else {
str_client[0] = '\0';
str_verifier[0] = '\0';
}
LogDebug(COMPONENT_CLIENTID,
"SETCLIENTID Client addr=%s id=%s verf=%s callback={program=%u r_addr=%s r_netid=%s} ident=%u",
str_client_addr, str_client, str_verifier,
arg_SETCLIENTID4->callback.cb_program,
arg_SETCLIENTID4->callback.cb_location.r_addr,
arg_SETCLIENTID4->callback.cb_location.r_netid,
arg_SETCLIENTID4->callback_ident);
/* Do we already have one or more records for client id (x)? */
client_record = get_client_record(arg_SETCLIENTID4->client.id.id_val,
arg_SETCLIENTID4->client.id.id_len,
0,
0);
if (client_record == NULL) {
/* Some major failure */
LogCrit(COMPONENT_CLIENTID, "SETCLIENTID failed");
res_SETCLIENTID4->status = NFS4ERR_SERVERFAULT;
return res_SETCLIENTID4->status;
}
/* The following checks are based on RFC3530bis draft 16
*
* This attempts to implement the logic described in
* 15.35.5. IMPLEMENTATION Consider the major bullets as CASE
* 1, CASE 2, CASE 3, CASE 4, and CASE 5.
*/
PTHREAD_MUTEX_lock(&client_record->cr_mutex);
if (isFullDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_record(&dspbuf, client_record);
LogFullDebug(COMPONENT_CLIENTID,
"Client Record %s cr_confirmed_rec=%p cr_unconfirmed_rec=%p",
str,
client_record->cr_confirmed_rec,
client_record->cr_unconfirmed_rec);
}
conf = client_record->cr_confirmed_rec;
if (conf != NULL) {
bool credmatch;
/* Need a reference to the confirmed record for below */
inc_client_id_ref(conf);
clientid = conf->cid_clientid;
display_clientid(&dspbuf_clientid4, clientid);
credmatch = nfs_compare_clientcred(&conf->cid_credential,
&data->credential)
&& op_ctx->client != NULL
&& conf->gsh_client != NULL
&& op_ctx->client == conf->gsh_client;
/* Only reject if the principal doesn't match and the
* clientid has live state associated. Per RFC 7530
* Section 9.1.2. Server Release of Client ID.
*/
if (!credmatch && clientid_has_state(conf)) {
/* CASE 1:
*
* Confirmed record exists and not the same principal
*/
if (isDebug(COMPONENT_CLIENTID)) {
char *confirmed_addr = "(unknown)";
if (conf->gsh_client != NULL)
confirmed_addr =
conf->gsh_client->hostaddr_str;
LogDebug(COMPONENT_CLIENTID,
"Confirmed ClientId %s->'%s': Principals do not match... confirmed addr=%s Return NFS4ERR_CLID_INUSE",
str_clientid4, str_client,
confirmed_addr);
}
res_SETCLIENTID4->status = NFS4ERR_CLID_INUSE;
res_SETCLIENTID4_INUSE->r_netid =
(char *)netid_nc_table[conf->cid_cb.v40.cb_addr.nc]
.netid;
res_SETCLIENTID4_INUSE->r_addr =
gsh_strdup(conf->cid_cb.v40.cb_client_r_addr);
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(conf);
goto out;
}
/* Check if confirmed record is for (v, x, c, l, s) */
if (credmatch && memcmp(arg_SETCLIENTID4->client.verifier,
conf->cid_incoming_verifier,
NFS4_VERIFIER_SIZE) == 0) {
/* CASE 2:
*
* A confirmed record exists for this long
* form client id and verifier.
*
* Consider this to be a possible update of
* the call-back information.
*
* Remove any pre-existing unconfirmed record
* for (v, x, c).
*
* Return the same short form client id (c),
* but a new setclientid_confirm verifier (t).
*/
LogFullDebug(COMPONENT_CLIENTID,
"Update ClientId %s->%s",
str_clientid4, str_client);
new_clientid_verifier(verifier);
} else {
/* Must be CASE 3 or CASE 4
*
* Confirmed record is for (u, x, c, l, s).
*
* These are actually the same, doesn't really
* matter if an unconfirmed record exists or
* not. Any existing unconfirmed record will
* be removed and a new unconfirmed record
* added.
*
* Return a new short form clientid (d) and a
* new setclientid_confirm verifier (t). (Note
* the spec calls the values e and r for CASE
* 4).
*/
LogFullDebug(COMPONENT_CLIENTID,
"Replace ClientId %s->%s",
str_clientid4, str_client);
clientid = new_clientid();
new_clientid_verifier(verifier);
}
/* Release our reference to the confirmed clientid. */
dec_client_id_ref(conf);
} else {
/* CASE 5:
*
*
* Remove any existing unconfirmed record.
*
* Return a new short form clientid (d) and a new
* setclientid_confirm verifier (t).
*/
clientid = new_clientid();
display_clientid(&dspbuf_clientid4, clientid);
LogFullDebug(COMPONENT_CLIENTID,
"New client %s", str_clientid4);
new_clientid_verifier(verifier);
}
/* At this point, no matter what the case was above, we should
* remove any pre-existing unconfirmed record.
*/
unconf = client_record->cr_unconfirmed_rec;
if (unconf != NULL) {
/* Delete the unconfirmed clientid record. Because we
* have the cr_mutex, we have won any race to deal
* with this clientid record (whether we raced with a
* SETCLIENTID_CONFIRM or the reaper thread (if either
* of those operations had won the race,
* cr_punconfirmed_id would have been NULL).
*/
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
display_client_id_rec(&dspbuf, unconf);
LogDebug(COMPONENT_CLIENTID, "Replacing %s", str);
}
/* unhash the clientid record */
remove_unconfirmed_client_id(unconf);
unconf = NULL;
}
/* Now we can proceed to build the new unconfirmed record. We
* have determined the clientid and setclientid_confirm values
* above.
*/
unconf = create_client_id(clientid,
client_record,
&data->credential,
0);
if (unconf == NULL) {
/* Error already logged, return */
res_SETCLIENTID4->status = NFS4ERR_RESOURCE;
goto out;
}
if (strmaxcpy(unconf->cid_cb.v40.cb_client_r_addr,
arg_SETCLIENTID4->callback.cb_location.r_addr,
sizeof(unconf->cid_cb.v40.cb_client_r_addr)) == -1) {
LogCrit(COMPONENT_CLIENTID, "Callback r_addr %s too long",
arg_SETCLIENTID4->callback.cb_location.r_addr);
res_SETCLIENTID4->status = NFS4ERR_INVAL;
goto out;
}
nfs_set_client_location(unconf,
&arg_SETCLIENTID4->callback.cb_location);
memcpy(unconf->cid_incoming_verifier,
arg_SETCLIENTID4->client.verifier,
NFS4_VERIFIER_SIZE);
memcpy(unconf->cid_verifier, verifier, sizeof(NFS4_write_verifier));
unconf->cid_cb.v40.cb_program = arg_SETCLIENTID4->callback.cb_program;
unconf->cid_cb.v40.cb_callback_ident = arg_SETCLIENTID4->callback_ident;
rc = nfs_client_id_insert(unconf);
if (rc != CLIENT_ID_SUCCESS) {
/* Record is already freed, return. */
res_SETCLIENTID4->status =
clientid_error_to_nfsstat_no_expire(rc);
goto out;
}
if (isDebug(COMPONENT_CLIENTID)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {sizeof(str), str, str};
sprint_mem(str_verifier, verifier, NFS4_VERIFIER_SIZE);
display_client_id_rec(&dspbuf, unconf);
LogDebug(COMPONENT_CLIENTID, "SETCLIENTID reply Verifier=%s %s",
str_verifier, str);
}
res_SETCLIENTID4->status = NFS4_OK;
res_SETCLIENTID4->SETCLIENTID4res_u.resok4.clientid = clientid;
memcpy(res_SETCLIENTID4->SETCLIENTID4res_u.resok4.setclientid_confirm,
&verifier, NFS4_VERIFIER_SIZE);
out:
PTHREAD_MUTEX_unlock(&client_record->cr_mutex);
/* Release our reference to the client record */
dec_client_record_ref(client_record);
return res_SETCLIENTID4->status;
}
/**
* @brief Display NFSv4 owner
*
* @param[in] owner The state owner
* @param[out] str Output string
*
* @return the bytes remaining in the buffer.
*/
int display_nfs4_owner(struct display_buffer *dspbuf, state_owner_t *owner)
{
int b_left;
time_t texpire;
struct state_nfs4_owner_t *nfs4_owner = &owner->so_owner.so_nfs4_owner;
if (owner == NULL)
return display_cat(dspbuf, "<NULL>");
b_left = display_printf(dspbuf, "%s %p:",
state_owner_type_to_str(owner->so_type),
owner);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, " clientid={");
if (b_left <= 0)
return b_left;
b_left = display_client_id_rec(dspbuf, nfs4_owner->so_clientrec);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, "} owner=");
if (b_left <= 0)
return b_left;
b_left = display_opaque_value(dspbuf,
owner->so_owner_val,
owner->so_owner_len);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, " confirmed=%u seqid=%u",
nfs4_owner->so_confirmed,
nfs4_owner->so_seqid);
if (b_left <= 0)
return b_left;
if (nfs4_owner->so_related_owner != NULL) {
b_left = display_printf(dspbuf, " related_owner={");
if (b_left <= 0)
return b_left;
b_left =
display_nfs4_owner(dspbuf, nfs4_owner->so_related_owner);
if (b_left <= 0)
return b_left;
b_left = display_printf(dspbuf, "}");
if (b_left <= 0)
return b_left;
}
texpire = atomic_fetch_time_t(&nfs4_owner->so_cache_expire);
if (texpire != 0) {
b_left = display_printf(dspbuf,
" cached(expires in %d secs)",
texpire - time(NULL));
if (b_left <= 0)
return b_left;
}
return display_printf(dspbuf, " refcount=%d",
atomic_fetch_int32_t(&owner->so_refcount));
}