int nfs4_op_destroy_session(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
DESTROY_SESSION4args * const arg_DESTROY_SESSION4 =
&op->nfs_argop4_u.opdestroy_session;
DESTROY_SESSION4res * const res_DESTROY_SESSION4 =
&resp->nfs_resop4_u.opdestroy_session;
sockaddr_t nw_addr;
sockaddr_t client_addr;
nfs41_session_t *session;
resp->resop = NFS4_OP_DESTROY_SESSION;
res_DESTROY_SESSION4->dsr_status = NFS4_OK;
if (data->minorversion == 0) {
res_DESTROY_SESSION4->dsr_status = NFS4ERR_INVAL;
return res_DESTROY_SESSION4->dsr_status = NFS4ERR_INVAL;
}
if (!nfs41_Session_Get_Pointer(arg_DESTROY_SESSION4->dsa_sessionid,
&session)) {
res_DESTROY_SESSION4->dsr_status = NFS4ERR_BADSESSION;
return res_DESTROY_SESSION4->dsr_status;
}
/* DESTROY_SESSION MUST be invoked on a connection that is associated
* with the session being destroyed
*/
/* Copy the address coming over the wire. */
copy_xprt_addr(&nw_addr, data->req->rq_xprt);
/* Copy the address recorded in the session. */
copy_xprt_addr(&client_addr, session->xprt);
/* Compare these fields. */
if (!cmp_sockaddr(&nw_addr, &client_addr, false)) {
res_DESTROY_SESSION4->dsr_status =
NFS4ERR_CONN_NOT_BOUND_TO_SESSION;
return res_DESTROY_SESSION4->dsr_status;
}
if (!nfs41_Session_Del(arg_DESTROY_SESSION4->dsa_sessionid))
res_DESTROY_SESSION4->dsr_status = NFS4ERR_BADSESSION;
else
res_DESTROY_SESSION4->dsr_status = NFS4_OK;
/* Release ref taken in get_pointer */
dec_session_ref(session);
return res_DESTROY_SESSION4->dsr_status;
} /* nfs41_op_destroy_session */
/**
*
* nfs41_op_sequence: the NFS4_OP_SEQUENCE operation
*
* This functions handles the NFS4_OP_SEQUENCE operation in NFSv4. This function can be called only from nfs4_Compound.
*
* @param op [IN] pointer to nfs4_op arguments
* @param data [INOUT] Pointer to the compound request's data
* @param resp [IN] Pointer to nfs4_op results
*
* @return NFS4_OK if successfull, other values show an error.
*
* @see all the nfs4_op_<*> function
* @see nfs4_Compound
*
*/
int nfs41_op_sequence(struct nfs_argop4 *op,
compound_data_t * data, struct nfs_resop4 *resp)
{
#define arg_SEQUENCE4 op->nfs_argop4_u.opsequence
#define res_SEQUENCE4 resp->nfs_resop4_u.opsequence
nfs41_session_t *psession;
resp->resop = NFS4_OP_SEQUENCE;
res_SEQUENCE4.sr_status = NFS4_OK;
/* OP_SEQUENCE is always the first operation of the request */
if(data->oppos != 0)
{
res_SEQUENCE4.sr_status = NFS4ERR_SEQUENCE_POS;
return res_SEQUENCE4.sr_status;
}
if(!nfs41_Session_Get_Pointer(arg_SEQUENCE4.sa_sessionid, &psession))
{
res_SEQUENCE4.sr_status = NFS4ERR_BADSESSION;
return res_SEQUENCE4.sr_status;
}
/* Check is slot is compliant with ca_maxrequests */
if(arg_SEQUENCE4.sa_slotid >= psession->fore_channel_attrs.ca_maxrequests)
{
res_SEQUENCE4.sr_status = NFS4ERR_BADSLOT;
return res_SEQUENCE4.sr_status;
}
/* By default, no DRC replay */
data->use_drc = FALSE;
P(psession->slots[arg_SEQUENCE4.sa_slotid].lock);
if(psession->slots[arg_SEQUENCE4.sa_slotid].sequence + 1 != arg_SEQUENCE4.sa_sequenceid)
{
if(psession->slots[arg_SEQUENCE4.sa_slotid].sequence == arg_SEQUENCE4.sa_sequenceid)
{
if(psession->slots[arg_SEQUENCE4.sa_slotid].cache_used == TRUE)
{
/* Replay operation through the DRC */
data->use_drc = TRUE;
data->pcached_res = psession->slots[arg_SEQUENCE4.sa_slotid].cached_result;
res_SEQUENCE4.sr_status = NFS4_OK;
return res_SEQUENCE4.sr_status;
}
else
{
/* Illegal replay */
res_SEQUENCE4.sr_status = NFS4ERR_RETRY_UNCACHED_REP;
return res_SEQUENCE4.sr_status;
}
}
V(psession->slots[arg_SEQUENCE4.sa_slotid].lock);
res_SEQUENCE4.sr_status = NFS4ERR_SEQ_MISORDERED;
return res_SEQUENCE4.sr_status;
}
/* Keep memory of the session in the COMPOUND's data */
data->psession = psession;
/* Update the sequence id within the slot */
psession->slots[arg_SEQUENCE4.sa_slotid].sequence += 1;
memcpy((char *)res_SEQUENCE4.SEQUENCE4res_u.sr_resok4.sr_sessionid,
(char *)arg_SEQUENCE4.sa_sessionid, NFS4_SESSIONID_SIZE);
res_SEQUENCE4.SEQUENCE4res_u.sr_resok4.sr_sequenceid =
psession->slots[arg_SEQUENCE4.sa_slotid].sequence;
res_SEQUENCE4.SEQUENCE4res_u.sr_resok4.sr_slotid = arg_SEQUENCE4.sa_slotid;
res_SEQUENCE4.SEQUENCE4res_u.sr_resok4.sr_highest_slotid = NFS41_NB_SLOTS - 1;
res_SEQUENCE4.SEQUENCE4res_u.sr_resok4.sr_target_highest_slotid = arg_SEQUENCE4.sa_slotid; /* Maybe not the best choice */
res_SEQUENCE4.SEQUENCE4res_u.sr_resok4.sr_status_flags = 0; /* What is to be set here ? */
if(arg_SEQUENCE4.sa_cachethis == TRUE)
{
data->pcached_res = psession->slots[arg_SEQUENCE4.sa_slotid].cached_result;
psession->slots[arg_SEQUENCE4.sa_slotid].cache_used = TRUE;
}
else
{
data->pcached_res = NULL;
psession->slots[arg_SEQUENCE4.sa_slotid].cache_used = FALSE;
}
V(psession->slots[arg_SEQUENCE4.sa_slotid].lock);
res_SEQUENCE4.sr_status = NFS4_OK;
return res_SEQUENCE4.sr_status;
} /* nfs41_op_sequence */
/**
* @brief the NFS4_OP_SEQUENCE operation
*
* @param[in] op nfs4_op arguments
* @param[in,out] data Compound request's data
* @param[out] resp nfs4_op results
*
* @return per RFC5661, p. 374
*
* @see nfs4_Compound
*
*/
int nfs4_op_sequence(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
SEQUENCE4args * const arg_SEQUENCE4 = &op->nfs_argop4_u.opsequence;
SEQUENCE4res * const res_SEQUENCE4 = &resp->nfs_resop4_u.opsequence;
nfs41_session_t *session;
resp->resop = NFS4_OP_SEQUENCE;
res_SEQUENCE4->sr_status = NFS4_OK;
if (data->minorversion == 0) {
res_SEQUENCE4->sr_status = NFS4ERR_INVAL;
return res_SEQUENCE4->sr_status;
}
/* OP_SEQUENCE is always the first operation of the request */
if (data->oppos != 0) {
res_SEQUENCE4->sr_status = NFS4ERR_SEQUENCE_POS;
return res_SEQUENCE4->sr_status;
}
if (!nfs41_Session_Get_Pointer(arg_SEQUENCE4->sa_sessionid, &session)) {
if (nfs_in_grace()) {
memcpy(res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.
sr_sessionid, arg_SEQUENCE4->sa_sessionid,
NFS4_SESSIONID_SIZE);
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_sequenceid =
arg_SEQUENCE4->sa_sequenceid;
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_slotid =
arg_SEQUENCE4->sa_slotid;
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.
sr_highest_slotid = NFS41_NB_SLOTS - 1;
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.
sr_target_highest_slotid = arg_SEQUENCE4->sa_slotid;
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.
sr_status_flags =
SEQ4_STATUS_RESTART_RECLAIM_NEEDED;
LogDebugAlt(COMPONENT_SESSIONS, COMPONENT_CLIENTID,
"SEQUENCE returning status %s flags 0x%X",
nfsstat4_to_str(res_SEQUENCE4->sr_status),
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.
sr_status_flags);
} else {
res_SEQUENCE4->sr_status = NFS4ERR_BADSESSION;
LogDebugAlt(COMPONENT_SESSIONS, COMPONENT_CLIENTID,
"SEQUENCE returning status %s",
nfsstat4_to_str(res_SEQUENCE4->sr_status));
}
return res_SEQUENCE4->sr_status;
}
/* session->refcount +1 */
LogDebug(COMPONENT_SESSIONS, "SEQUENCE session=%p", session);
/* Check if lease is expired and reserve it */
pthread_mutex_lock(&session->clientid_record->cid_mutex);
if (!reserve_lease(session->clientid_record)) {
pthread_mutex_unlock(&session->clientid_record->cid_mutex);
dec_session_ref(session);
res_SEQUENCE4->sr_status = NFS4ERR_EXPIRED;
LogDebugAlt(COMPONENT_SESSIONS, COMPONENT_CLIENTID,
"SEQUENCE returning status %s",
nfsstat4_to_str(res_SEQUENCE4->sr_status));
return res_SEQUENCE4->sr_status;
}
data->preserved_clientid = session->clientid_record;
pthread_mutex_unlock(&session->clientid_record->cid_mutex);
/* Check is slot is compliant with ca_maxrequests */
if (arg_SEQUENCE4->sa_slotid >=
session->fore_channel_attrs.ca_maxrequests) {
dec_session_ref(session);
res_SEQUENCE4->sr_status = NFS4ERR_BADSLOT;
LogDebugAlt(COMPONENT_SESSIONS, COMPONENT_CLIENTID,
"SEQUENCE returning status %s",
nfsstat4_to_str(res_SEQUENCE4->sr_status));
return res_SEQUENCE4->sr_status;
}
/* By default, no DRC replay */
data->use_drc = false;
pthread_mutex_lock(&session->slots[arg_SEQUENCE4->sa_slotid].lock);
if (session->slots[arg_SEQUENCE4->sa_slotid].sequence + 1 !=
arg_SEQUENCE4->sa_sequenceid) {
if (session->slots[arg_SEQUENCE4->sa_slotid].sequence ==
arg_SEQUENCE4->sa_sequenceid) {
#if IMPLEMENT_CACHETHIS
/** @todo
*
* Ganesha always caches result anyway so ignore
* cachethis
*/
if (session->slots[arg_SEQUENCE4->sa_slotid]
.cache_used) {
#endif
/* Replay operation through the DRC */
data->use_drc = true;
data->cached_res =
&session->slots[arg_SEQUENCE4->sa_slotid].
cached_result;
LogFullDebugAlt(COMPONENT_SESSIONS,
COMPONENT_CLIENTID,
"Use sesson slot %" PRIu32
"=%p for DRC",
arg_SEQUENCE4->sa_slotid,
data->cached_res);
pthread_mutex_unlock(&session->
slots[arg_SEQUENCE4->sa_slotid].lock);
dec_session_ref(session);
res_SEQUENCE4->sr_status = NFS4_OK;
return res_SEQUENCE4->sr_status;
#if IMPLEMENT_CACHETHIS
} else {
/* Illegal replay */
pthread_mutex_unlock(&session->
slots[arg_SEQUENCE4->sa_slotid].lock);
dec_session_ref(session);
res_SEQUENCE4->sr_status =
NFS4ERR_RETRY_UNCACHED_REP;
LogDebugAlt(COMPONENT_SESSIONS,
COMPONENT_CLIENTID,
"SEQUENCE returning status %s",
nfsstat4_to_str(res_SEQUENCE4->
sr_status));
return res_SEQUENCE4->sr_status;
}
#endif
}
pthread_mutex_unlock(&session->
slots[arg_SEQUENCE4->sa_slotid].lock);
dec_session_ref(session);
res_SEQUENCE4->sr_status = NFS4ERR_SEQ_MISORDERED;
LogDebugAlt(COMPONENT_SESSIONS, COMPONENT_CLIENTID,
"SEQUENCE returning status %s",
nfsstat4_to_str(res_SEQUENCE4->sr_status));
return res_SEQUENCE4->sr_status;
}
/* Keep memory of the session in the COMPOUND's data */
data->session = session;
/* Record the sequenceid and slotid in the COMPOUND's data */
data->sequence = arg_SEQUENCE4->sa_sequenceid;
data->slot = arg_SEQUENCE4->sa_slotid;
/* Update the sequence id within the slot */
session->slots[arg_SEQUENCE4->sa_slotid].sequence += 1;
memcpy(res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_sessionid,
arg_SEQUENCE4->sa_sessionid, NFS4_SESSIONID_SIZE);
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_sequenceid =
session->slots[arg_SEQUENCE4->sa_slotid].sequence;
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_slotid =
arg_SEQUENCE4->sa_slotid;
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_highest_slotid =
NFS41_NB_SLOTS - 1;
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_target_highest_slotid =
arg_SEQUENCE4->sa_slotid; /* Maybe not the best choice */
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_status_flags = 0;
if (nfs_rpc_get_chan(session->clientid_record, 0) == NULL) {
res_SEQUENCE4->SEQUENCE4res_u.sr_resok4.sr_status_flags |=
SEQ4_STATUS_CB_PATH_DOWN;
}
#if IMPLEMENT_CACHETHIS
/* Ganesha always caches result anyway so ignore cachethis */
if (arg_SEQUENCE4->sa_cachethis) {
#endif
data->cached_res =
&session->slots[arg_SEQUENCE4->sa_slotid].cached_result;
session->slots[arg_SEQUENCE4->sa_slotid].cache_used = true;
LogFullDebugAlt(COMPONENT_SESSIONS, COMPONENT_CLIENTID,
"Use sesson slot %" PRIu32 "=%p for DRC",
arg_SEQUENCE4->sa_slotid, data->cached_res);
#if IMPLEMENT_CACHETHIS
} else {
data->cached_res = NULL;
session->slots[arg_SEQUENCE4->sa_slotid].cache_used = false;
LogFullDebugAlt(COMPONENT_SESSIONS, COMPONENT_CLIENTID,
"Don't use sesson slot %" PRIu32
"=NULL for DRC", arg_SEQUENCE4->sa_slotid);
}
#endif
pthread_mutex_unlock(&session->slots[arg_SEQUENCE4->sa_slotid].lock);
/* If we were successful, stash the clientid in the request
* context.
*/
data->req_ctx->clientid = &data->session->clientid;
res_SEQUENCE4->sr_status = NFS4_OK;
return res_SEQUENCE4->sr_status;
} /* nfs41_op_sequence */
