void remove_nfs4_owner(cache_inode_client_t * pclient,
state_owner_t * powner,
const char * str)
{
hash_buffer_t buffkey, old_key, old_value;
state_nfs4_owner_name_t oname;
int rc;
oname.son_clientid = powner->so_owner.so_nfs4_owner.so_clientid;
oname.son_owner_len = powner->so_owner_len;
oname.son_islock = powner->so_type == STATE_LOCK_OWNER_NFSV4;
memcpy(oname.son_owner_val, powner->so_owner_val, powner->so_owner_len);
buffkey.pdata = (caddr_t) &oname;
buffkey.len = sizeof(*powner);
rc = HashTable_DelRef(ht_nfs4_owner,
&buffkey,
&old_key,
&old_value,
Hash_dec_state_owner_ref);
switch(rc)
{
case HASHTABLE_SUCCESS:
if(powner->so_type == STATE_LOCK_OWNER_NFSV4)
dec_state_owner_ref(powner->so_owner.so_nfs4_owner.so_related_owner, pclient);
/* Release the owner_name (key) and owner (data) back to appropriate pools */
LogFullDebug(COMPONENT_STATE, "Free %s", str);
nfs4_Compound_FreeOne(&powner->so_owner.so_nfs4_owner.so_resp);
ReleaseToPool(old_value.pdata, &pclient->pool_state_owner);
ReleaseToPool(old_key.pdata, &pclient->pool_nfs4_owner_name);
break;
case HASHTABLE_NOT_DELETED:
/* ref count didn't end up at 0, don't free. */
LogDebug(COMPONENT_STATE,
"HashTable_DelRef didn't reduce refcount to 0 for %s",
str);
break;
default:
/* some problem occurred */
LogDebug(COMPONENT_STATE,
"HashTable_DelRef failed (%s) for %s",
hash_table_err_to_str(rc), str);
break;
}
}
void Process_nfs4_conflict(LOCK4denied * denied, /* NFS v4 LOck4denied structure to fill in */
state_owner_t * holder, /* owner that holds conflicting lock */
state_lock_desc_t * conflict, /* description of conflicting lock */
cache_inode_client_t * pclient)
{
/* A conflicting lock from a different lock_owner, returns NFS4ERR_DENIED */
denied->offset = conflict->sld_offset;
denied->length = conflict->sld_length;
if(conflict->sld_type == STATE_LOCK_R)
denied->locktype = READ_LT;
else
denied->locktype = WRITE_LT;
if(holder != NULL && holder->so_owner_len != 0)
denied->owner.owner.owner_val = Mem_Alloc(holder->so_owner_len);
else
denied->owner.owner.owner_val = NULL;
LogFullDebug(COMPONENT_STATE,
"denied->owner.owner.owner_val = %p",
denied->owner.owner.owner_val);
if(denied->owner.owner.owner_val != NULL)
{
denied->owner.owner.owner_len = holder->so_owner_len;
memcpy(denied->owner.owner.owner_val,
holder->so_owner_val,
holder->so_owner_len);
}
else
{
denied->owner.owner.owner_len = unknown_owner.so_owner_len;
denied->owner.owner.owner_val = unknown_owner.so_owner_val;
}
if(holder->so_type == STATE_LOCK_OWNER_NFSV4)
denied->owner.clientid = holder->so_owner.so_nfs4_owner.so_clientid;
else
denied->owner.clientid = 0;
/* Release any lock owner reference passed back from SAL */
if(holder != NULL)
dec_state_owner_ref(holder, pclient);
}
void free_nfs4_owner(state_owner_t * owner)
{
if(owner->so_owner.so_nfs4_owner.so_related_owner != NULL)
dec_state_owner_ref(owner->so_owner.so_nfs4_owner.so_related_owner);
/* Release the saved response. */
nfs4_Compound_FreeOne(&owner->so_owner.so_nfs4_owner.so_resp);
/* Remove the owner from the owners per clientid list. */
P(owner->so_owner.so_nfs4_owner.so_clientrec->cid_mutex);
glist_del(&owner->so_owner.so_nfs4_owner.so_perclient);
V(owner->so_owner.so_nfs4_owner.so_clientrec->cid_mutex);
dec_client_id_ref(owner->so_owner.so_nfs4_owner.so_clientrec);
}
void Process_nfs4_conflict(LOCK4denied *denied,
state_owner_t *holder,
fsal_lock_param_t *conflict)
{
/* A conflicting lock from a different lock_owner, returns NFS4ERR_DENIED */
denied->offset = conflict->lock_start;
denied->length = conflict->lock_length;
if(conflict->lock_type == FSAL_LOCK_R)
denied->locktype = READ_LT;
else
denied->locktype = WRITE_LT;
if(holder != NULL && holder->so_owner_len != 0)
denied->owner.owner.owner_val = gsh_malloc(holder->so_owner_len);
else
denied->owner.owner.owner_val = NULL;
LogFullDebug(COMPONENT_STATE,
"denied->owner.owner.owner_val = %p",
denied->owner.owner.owner_val);
if(denied->owner.owner.owner_val != NULL)
{
denied->owner.owner.owner_len = holder->so_owner_len;
memcpy(denied->owner.owner.owner_val,
holder->so_owner_val,
holder->so_owner_len);
}
else
{
denied->owner.owner.owner_len = unknown_owner.so_owner_len;
denied->owner.owner.owner_val = unknown_owner.so_owner_val;
}
if(holder != NULL && holder->so_type == STATE_LOCK_OWNER_NFSV4)
denied->owner.clientid = holder->so_owner.so_nfs4_owner.so_clientid;
else
denied->owner.clientid = 0;
/* Release any lock owner reference passed back from SAL */
if(holder != NULL)
dec_state_owner_ref(holder);
}
void nlm_process_conflict(nlm4_holder * nlm_holder,
state_owner_t * holder,
state_lock_desc_t * conflict,
cache_inode_client_t * pclient)
{
if(conflict != NULL)
{
nlm_holder->exclusive = conflict->sld_type == STATE_LOCK_W;
nlm_holder->l_offset = conflict->sld_offset;
nlm_holder->l_len = conflict->sld_length;
}
else
{
/* For some reason, don't have an actual conflict,
* just make it exclusive over the whole file
* (which would conflict with any lock requested).
*/
nlm_holder->exclusive = TRUE;
nlm_holder->l_offset = 0;
nlm_holder->l_len = 0;
}
if(holder != NULL)
{
if(holder->so_type == STATE_LOCK_OWNER_NLM)
nlm_holder->svid = holder->so_owner.so_nlm_owner.so_nlm_svid;
else
nlm_holder->svid = 0;
fill_netobj(&nlm_holder->oh,
holder->so_owner_val,
holder->so_owner_len);
}
else
{
/* If we don't have an NLM owner, not much we can do. */
nlm_holder->svid = 0;
fill_netobj(&nlm_holder->oh,
unknown_owner.so_owner_val,
unknown_owner.so_owner_len);
}
/* Release any lock owner reference passed back from SAL */
if(holder != NULL)
dec_state_owner_ref(holder, pclient);
}
void free_nfs4_owner(state_owner_t *owner)
{
state_nfs4_owner_t *nfs4_owner = &owner->so_owner.so_nfs4_owner;
if (nfs4_owner->so_related_owner != NULL)
dec_state_owner_ref(nfs4_owner->so_related_owner);
/* Release the saved response. */
nfs4_Compound_FreeOne(&nfs4_owner->so_resp);
/* Remove the owner from the owners per clientid list. */
PTHREAD_MUTEX_lock(&nfs4_owner->so_clientrec->cid_mutex);
glist_del(&nfs4_owner->so_perclient);
PTHREAD_MUTEX_unlock(&nfs4_owner->so_clientrec->cid_mutex);
dec_client_id_ref(nfs4_owner->so_clientrec);
}
/**
* @brief Create an NFSv4 state owner
*
* @param[in] name Owner name
* @param[in] clientid Client record
* @param[in] type Owner type
* @param[in] related_owner For lock owners, the related open owner
* @param[in] init_seqid The starting seqid (for NFSv4.0)
* @param[out] pisnew Whether the owner actually is new
* @param[in] care Care flag (to unify v3/v4 owners?)
*
* @return A new state owner or NULL.
*/
state_owner_t *create_nfs4_owner(state_nfs4_owner_name_t *name,
nfs_client_id_t *clientid,
state_owner_type_t type,
state_owner_t *related_owner,
unsigned int init_seqid, bool_t *pisnew,
care_t care)
{
state_owner_t key;
state_owner_t *owner;
bool_t isnew;
/* set up the content of the open_owner */
memset(&key, 0, sizeof(key));
key.so_type = type;
key.so_owner.so_nfs4_owner.so_seqid = init_seqid;
key.so_owner.so_nfs4_owner.so_related_owner = related_owner;
key.so_owner.so_nfs4_owner.so_clientid = clientid->cid_clientid;
key.so_owner.so_nfs4_owner.so_clientrec = clientid;
key.so_owner_len = name->son_owner_len;
key.so_owner_val = name->son_owner_val;
key.so_owner.so_nfs4_owner.so_resp.resop = NFS4_OP_ILLEGAL;
key.so_owner.so_nfs4_owner.so_args.argop = NFS4_OP_ILLEGAL;
key.so_refcount = 1;
#if 0
/* WAITING FOR COMMUNITY FIX */
/* setting lock owner confirmed */
if (type == STATE_LOCK_OWNER_NFSV4)
key.so_owner.so_nfs4_owner.so_confirmed = 1;
#endif
if (isFullDebug(COMPONENT_STATE)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_owner(&dspbuf, &key);
LogFullDebug(COMPONENT_STATE, "Key=%s", str);
}
owner = get_state_owner(care, &key, init_nfs4_owner, &isnew);
if (owner != NULL && related_owner != NULL) {
PTHREAD_MUTEX_lock(&owner->so_mutex);
/* Related owner already exists. */
if (owner->so_owner.so_nfs4_owner.so_related_owner == NULL) {
/* Attach related owner to owner now that we know it. */
inc_state_owner_ref(related_owner);
owner->so_owner.so_nfs4_owner.so_related_owner =
related_owner;
} else if (owner->so_owner.so_nfs4_owner.so_related_owner !=
related_owner) {
char str1[LOG_BUFF_LEN / 2];
char str2[LOG_BUFF_LEN / 2];
struct display_buffer dspbuf1 = {
sizeof(str1), str1, str1};
struct display_buffer dspbuf2 = {
sizeof(str2), str2, str2};
display_owner(&dspbuf1, related_owner);
display_owner(&dspbuf2, owner);
LogCrit(COMPONENT_NFS_V4_LOCK,
"Related {%s} doesn't match for {%s}", str1,
str2);
PTHREAD_MUTEX_unlock(&owner->so_mutex);
/* Release the reference to the owner. */
dec_state_owner_ref(owner);
return NULL;
}
PTHREAD_MUTEX_unlock(&owner->so_mutex);
}
if (!isnew && owner != NULL && pisnew != NULL) {
if (isDebug(COMPONENT_STATE)) {
char str[LOG_BUFF_LEN];
struct display_buffer dspbuf = {sizeof(str), str, str};
display_owner(&dspbuf, owner);
LogDebug(COMPONENT_STATE,
"Previously known owner {%s} is being reused",
str);
}
}
if (pisnew != NULL)
*pisnew = isnew;
return owner;
}
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 nlm4_Share(nfs_arg_t * parg,
exportlist_t * pexport,
fsal_op_context_t * pcontext,
nfs_worker_data_t * pworker,
struct svc_req * preq,
nfs_res_t * pres)
{
nlm4_shareargs * arg = &parg->arg_nlm4_share;
cache_entry_t * pentry;
state_status_t state_status = STATE_SUCCESS;
char buffer[MAXNETOBJ_SZ * 2];
state_nsm_client_t * nsm_client;
state_nlm_client_t * nlm_client;
state_owner_t * nlm_owner;
int rc;
int grace = nfs_in_grace();
pres->res_nlm4share.sequence = 0;
netobj_to_string(&arg->cookie, buffer, 1024);
LogDebug(COMPONENT_NLM,
"REQUEST PROCESSING: Calling nlm4_Share cookie=%s reclaim=%s",
buffer,
arg->reclaim ? "yes" : "no");
if(!copy_netobj(&pres->res_nlm4share.cookie, &arg->cookie))
{
pres->res_nlm4share.stat = NLM4_FAILED;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Share %s",
lock_result_str(pres->res_nlm4share.stat));
return NFS_REQ_OK;
}
/* Allow only reclaim share request during recovery and visa versa.
* Note: NLM_SHARE is indicated to be non-monitored, however, it does
* have a reclaim flag, so we will honor the reclaim flag if used.
*/
if((grace && !arg->reclaim) ||
(!grace && arg->reclaim))
{
pres->res_nlm4share.stat = NLM4_DENIED_GRACE_PERIOD;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Share %s",
lock_result_str(pres->res_nlm4share.stat));
return NFS_REQ_OK;
}
rc = nlm_process_share_parms(preq,
&arg->share,
&pentry,
pcontext,
CARE_NO_MONITOR,
&nsm_client,
&nlm_client,
&nlm_owner);
if(rc >= 0)
{
/* Present the error back to the client */
pres->res_nlm4share.stat = (nlm4_stats)rc;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Share %s",
lock_result_str(pres->res_nlm4share.stat));
return NFS_REQ_OK;
}
if(state_nlm_share(pentry,
pcontext,
pexport,
arg->share.access,
arg->share.mode,
nlm_owner,
&state_status) != STATE_SUCCESS)
{
pres->res_nlm4share.stat = nlm_convert_state_error(state_status);
}
else
{
pres->res_nlm4share.stat = NLM4_GRANTED;
}
/* Release the NLM Client and NLM Owner references we have */
dec_nsm_client_ref(nsm_client);
dec_nlm_client_ref(nlm_client);
dec_state_owner_ref(nlm_owner);
cache_inode_put(pentry);
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Share %s",
lock_result_str(pres->res_nlm4share.stat));
return NFS_REQ_OK;
}
int nfs4_op_release_lockowner(struct nfs_argop4 * op,
compound_data_t * data,
struct nfs_resop4 * resp)
{
nfs_client_id_t * pnfs_client_id;
state_owner_t * plock_owner;
state_nfs4_owner_name_t owner_name;
int rc;
LogDebug(COMPONENT_NFS_V4_LOCK,
"Entering NFS v4 RELEASE_LOCKOWNER handler -----------------------------------------------------");
resp->resop = NFS4_OP_RELEASE_LOCKOWNER;
res_RELEASE_LOCKOWNER4.status = NFS4_OK;
/* Check clientid */
rc = nfs_client_id_get_confirmed(arg_RELEASE_LOCKOWNER4.lock_owner.clientid,
&pnfs_client_id);
if(rc != CLIENT_ID_SUCCESS)
{
res_RELEASE_LOCKOWNER4.status = clientid_error_to_nfsstat(rc);
goto out2;
}
P(pnfs_client_id->cid_mutex);
if(!reserve_lease(pnfs_client_id))
{
V(pnfs_client_id->cid_mutex);
dec_client_id_ref(pnfs_client_id);
res_RELEASE_LOCKOWNER4.status = NFS4ERR_EXPIRED;
goto out2;
}
V(pnfs_client_id->cid_mutex);
/* look up the lock owner and see if we can find it */
convert_nfs4_lock_owner(&arg_RELEASE_LOCKOWNER4.lock_owner, &owner_name);
/* If this open owner is not known yet, allocated and set up a new one */
plock_owner = create_nfs4_owner(&owner_name,
pnfs_client_id,
STATE_OPEN_OWNER_NFSV4,
NULL,
0,
NULL,
CARE_NOT);
if(plock_owner == NULL)
{
/* the owner doesn't exist, we are done */
LogDebug(COMPONENT_NFS_V4_LOCK,
"lock owner does not exist");
res_RELEASE_LOCKOWNER4.status = NFS4_OK;
goto out1;
}
P(plock_owner->so_mutex);
/* got the owner, does it still have any locks being held */
if(!glist_empty(&plock_owner->so_lock_list))
{
V(plock_owner->so_mutex);
res_RELEASE_LOCKOWNER4.status = NFS4ERR_LOCKS_HELD;
}
else
{
V(plock_owner->so_mutex);
/* found the lock owner and it doesn't have any locks, release it */
release_lockstate(plock_owner);
res_RELEASE_LOCKOWNER4.status = NFS4_OK;
}
/* Release the reference to the lock owner acquired via create_nfs4_owner */
dec_state_owner_ref(plock_owner);
out1:
/* Update the lease before exit */
P(pnfs_client_id->cid_mutex);
update_lease(pnfs_client_id);
V(pnfs_client_id->cid_mutex);
dec_client_id_ref(pnfs_client_id);
out2:
LogDebug(COMPONENT_NFS_V4_LOCK,
"Leaving NFS v4 RELEASE_LOCKOWNER handler -----------------------------------------------------");
return res_RELEASE_LOCKOWNER4.status;
} /* nfs4_op_release_lock_owner */
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 */
static int nfs4_write(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp, fsal_io_direction_t io,
struct io_info *info)
{
WRITE4args * const arg_WRITE4 = &op->nfs_argop4_u.opwrite;
WRITE4res * const res_WRITE4 = &resp->nfs_resop4_u.opwrite;
uint64_t size = 0;
size_t written_size = 0;
uint64_t offset;
bool eof_met;
bool sync = false;
void *bufferdata;
stable_how4 stable_how;
state_t *state_found = NULL;
state_t *state_open = NULL;
fsal_status_t fsal_status = {0, 0};
struct fsal_obj_handle *obj = NULL;
bool anonymous_started = false;
struct gsh_buffdesc verf_desc;
state_owner_t *owner = NULL;
uint64_t MaxWrite =
atomic_fetch_uint64_t(&op_ctx->ctx_export->MaxWrite);
uint64_t MaxOffsetWrite =
atomic_fetch_uint64_t(&op_ctx->ctx_export->MaxOffsetWrite);
/* Lock are not supported */
resp->resop = NFS4_OP_WRITE;
res_WRITE4->status = NFS4_OK;
if ((data->minorversion > 0)
&& (nfs4_Is_Fh_DSHandle(&data->currentFH))) {
if (io == FSAL_IO_WRITE)
return op_dswrite(op, data, resp);
else
return op_dswrite_plus(op, data, resp, info);
}
/*
* Do basic checks on a filehandle
* Only files can be written
*/
res_WRITE4->status = nfs4_sanity_check_FH(data, REGULAR_FILE, true);
if (res_WRITE4->status != NFS4_OK)
return res_WRITE4->status;
/* if quota support is active, then we should check is the FSAL
allows inode creation or not */
fsal_status = op_ctx->fsal_export->exp_ops.check_quota(
op_ctx->fsal_export,
op_ctx->ctx_export->fullpath,
FSAL_QUOTA_INODES);
if (FSAL_IS_ERROR(fsal_status)) {
res_WRITE4->status = NFS4ERR_DQUOT;
return res_WRITE4->status;
}
/* vnode to manage is the current one */
obj = data->current_obj;
/* Check stateid correctness and get pointer to state
* (also checks for special stateids)
*/
res_WRITE4->status = nfs4_Check_Stateid(&arg_WRITE4->stateid,
obj,
&state_found,
data,
STATEID_SPECIAL_ANY,
0,
false,
"WRITE");
if (res_WRITE4->status != NFS4_OK)
return res_WRITE4->status;
/* NB: After this points, if state_found == NULL, then
* the stateid is all-0 or all-1
*/
if (state_found != NULL) {
struct state_deleg *sdeleg;
if (info)
info->io_advise = state_found->state_data.io_advise;
switch (state_found->state_type) {
case STATE_TYPE_SHARE:
state_open = state_found;
/* Note this causes an extra refcount, but it
* simplifies logic below.
*/
inc_state_t_ref(state_open);
/** @todo FSF: need to check against existing locks */
break;
case STATE_TYPE_LOCK:
state_open = state_found->state_data.lock.openstate;
inc_state_t_ref(state_open);
/**
* @todo FSF: should check that write is in range of an
* exclusive lock...
*/
break;
case STATE_TYPE_DELEG:
/* Check if the delegation state allows READ */
sdeleg = &state_found->state_data.deleg;
if (!(sdeleg->sd_type & OPEN_DELEGATE_WRITE) ||
(sdeleg->sd_state != DELEG_GRANTED)) {
/* Invalid delegation for this operation. */
LogDebug(COMPONENT_STATE,
"Delegation type:%d state:%d",
sdeleg->sd_type,
sdeleg->sd_state);
res_WRITE4->status = NFS4ERR_BAD_STATEID;
return res_WRITE4->status;
}
state_open = NULL;
break;
case STATE_TYPE_LAYOUT:
state_open = NULL;
break;
default:
res_WRITE4->status = NFS4ERR_BAD_STATEID;
LogDebug(COMPONENT_NFS_V4_LOCK,
"WRITE with invalid stateid of type %d",
(int)state_found->state_type);
return res_WRITE4->status;
}
/* This is a write operation, this means that the file
* MUST have been opened for writing
*/
if (state_open != NULL &&
(state_open->state_data.share.share_access &
OPEN4_SHARE_ACCESS_WRITE) == 0) {
/* Bad open mode, return NFS4ERR_OPENMODE */
res_WRITE4->status = NFS4ERR_OPENMODE;
if (isDebug(COMPONENT_NFS_V4_LOCK)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {
sizeof(str), str, str};
display_stateid(&dspbuf, state_found);
LogDebug(COMPONENT_NFS_V4_LOCK,
"WRITE %s doesn't have OPEN4_SHARE_ACCESS_WRITE",
str);
}
goto out;
}
} else {
/* Special stateid, no open state, check to see if any
* share conflicts
*/
state_open = NULL;
/* Special stateid, no open state, check to see if any share
* conflicts The stateid is all-0 or all-1
*/
res_WRITE4->status = nfs4_Errno_state(
state_share_anonymous_io_start(
obj,
OPEN4_SHARE_ACCESS_WRITE,
SHARE_BYPASS_NONE));
if (res_WRITE4->status != NFS4_OK)
goto out;
anonymous_started = true;
}
/* Need to permission check the write. */
fsal_status = obj->obj_ops.test_access(obj, FSAL_WRITE_ACCESS,
NULL, NULL, true);
if (FSAL_IS_ERROR(fsal_status)) {
res_WRITE4->status = nfs4_Errno_status(fsal_status);
goto done;
}
/* Get the characteristics of the I/O to be made */
offset = arg_WRITE4->offset;
size = arg_WRITE4->data.data_len;
stable_how = arg_WRITE4->stable;
LogFullDebug(COMPONENT_NFS_V4,
"offset = %" PRIu64 " length = %" PRIu64 " stable = %d",
offset, size, stable_how);
if (MaxOffsetWrite < UINT64_MAX) {
LogFullDebug(COMPONENT_NFS_V4,
"Write offset=%" PRIu64 " count=%" PRIu64
" MaxOffSet=%" PRIu64, offset, size,
MaxOffsetWrite);
if ((offset + size) > MaxOffsetWrite) {
LogEvent(COMPONENT_NFS_V4,
"A client tryed to violate max file size %"
PRIu64 " for exportid #%hu",
MaxOffsetWrite,
op_ctx->ctx_export->export_id);
res_WRITE4->status = NFS4ERR_FBIG;
goto done;
}
}
if (size > MaxWrite) {
/*
* The client asked for too much data, we
* must restrict him
*/
if (info == NULL ||
info->io_content.what != NFS4_CONTENT_HOLE) {
LogFullDebug(COMPONENT_NFS_V4,
"write requested size = %" PRIu64
" write allowed size = %" PRIu64,
size, MaxWrite);
size = MaxWrite;
}
}
/* Where are the data ? */
bufferdata = arg_WRITE4->data.data_val;
LogFullDebug(COMPONENT_NFS_V4,
"offset = %" PRIu64 " length = %" PRIu64,
offset, size);
/* if size == 0 , no I/O) are actually made and everything is alright */
if (size == 0) {
res_WRITE4->WRITE4res_u.resok4.count = 0;
res_WRITE4->WRITE4res_u.resok4.committed = FILE_SYNC4;
verf_desc.addr = res_WRITE4->WRITE4res_u.resok4.writeverf;
verf_desc.len = sizeof(verifier4);
op_ctx->fsal_export->exp_ops.get_write_verifier(
op_ctx->fsal_export, &verf_desc);
res_WRITE4->status = NFS4_OK;
goto done;
}
if (arg_WRITE4->stable == UNSTABLE4)
sync = false;
else
sync = true;
if (!anonymous_started && data->minorversion == 0) {
owner = get_state_owner_ref(state_found);
if (owner != NULL) {
op_ctx->clientid =
&owner->so_owner.so_nfs4_owner.so_clientid;
}
}
if (obj->fsal->m_ops.support_ex(obj)) {
/* Call the new fsal_write */
fsal_status = fsal_write2(obj, false, state_found, offset, size,
&written_size, bufferdata, &sync,
info);
} else {
/* Call legacy fsal_rdwr */
fsal_status = fsal_rdwr(obj, io, offset, size, &written_size,
bufferdata, &eof_met, &sync, info);
}
if (FSAL_IS_ERROR(fsal_status)) {
LogDebug(COMPONENT_NFS_V4, "write returned %s",
fsal_err_txt(fsal_status));
res_WRITE4->status = nfs4_Errno_status(fsal_status);
goto done;
}
if (!anonymous_started && data->minorversion == 0)
op_ctx->clientid = NULL;
/* Set the returned value */
if (sync)
res_WRITE4->WRITE4res_u.resok4.committed = FILE_SYNC4;
else
res_WRITE4->WRITE4res_u.resok4.committed = UNSTABLE4;
res_WRITE4->WRITE4res_u.resok4.count = written_size;
verf_desc.addr = res_WRITE4->WRITE4res_u.resok4.writeverf;
verf_desc.len = sizeof(verifier4);
op_ctx->fsal_export->exp_ops.get_write_verifier(op_ctx->fsal_export,
&verf_desc);
res_WRITE4->status = NFS4_OK;
done:
if (anonymous_started)
state_share_anonymous_io_done(obj, OPEN4_SHARE_ACCESS_WRITE);
server_stats_io_done(size, written_size,
(res_WRITE4->status == NFS4_OK) ? true : false,
true);
out:
if (owner != NULL)
dec_state_owner_ref(owner);
if (state_found != NULL)
dec_state_t_ref(state_found);
if (state_open != NULL)
dec_state_t_ref(state_open);
return res_WRITE4->status;
} /* nfs4_op_write */
/**
* @brief NFS4_OP_OPEN_CONFIRM
*
* This function implements the NFS4_OP_OPEN_CONFIRM operation.
*
* @param[in] op Arguments for nfs4_op
* @param[in,out] data Compound request's data
* @param[out] resp Results for nfs4_op
*
* @retval NFS4_OK or errors for NFSv4.0
* @retval NFS4ERR_NOTSUPP for NFSv4.1
*
*/
int nfs4_op_open_confirm(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
OPEN_CONFIRM4args * const arg_OPEN_CONFIRM4 =
&op->nfs_argop4_u.opopen_confirm;
OPEN_CONFIRM4res * const res_OPEN_CONFIRM4 =
&resp->nfs_resop4_u.opopen_confirm;
OPEN_CONFIRM4resok *resok =
&res_OPEN_CONFIRM4->OPEN_CONFIRM4res_u.resok4;
int rc = 0;
state_t *state_found = NULL;
state_owner_t *open_owner;
const char *tag = "OPEN_CONFIRM";
resp->resop = NFS4_OP_OPEN_CONFIRM;
res_OPEN_CONFIRM4->status = NFS4_OK;
if (data->minorversion > 0) {
res_OPEN_CONFIRM4->status = NFS4ERR_NOTSUPP;
return res_OPEN_CONFIRM4->status;
}
/* Do basic checks on a filehandle
* Should not operate on non-file objects
*/
res_OPEN_CONFIRM4->status =
nfs4_sanity_check_FH(data, REGULAR_FILE, false);
if (res_OPEN_CONFIRM4->status != NFS4_OK)
return res_OPEN_CONFIRM4->status;
/* Check stateid correctness and get pointer to state */
rc = nfs4_Check_Stateid(&arg_OPEN_CONFIRM4->open_stateid,
data->current_obj,
&state_found,
data,
STATEID_SPECIAL_FOR_LOCK,
arg_OPEN_CONFIRM4->seqid,
data->minorversion == 0,
tag);
if (rc != NFS4_OK && rc != NFS4ERR_REPLAY) {
res_OPEN_CONFIRM4->status = rc;
return res_OPEN_CONFIRM4->status;
}
open_owner = get_state_owner_ref(state_found);
if (open_owner == NULL) {
/* State is going stale. */
res_OPEN_CONFIRM4->status = NFS4ERR_STALE;
LogDebug(COMPONENT_NFS_V4,
"OPEN CONFIRM failed nfs4_Check_Stateid, stale open owner");
goto out2;
}
PTHREAD_MUTEX_lock(&open_owner->so_mutex);
/* Check seqid */
if (!Check_nfs4_seqid(open_owner,
arg_OPEN_CONFIRM4->seqid,
op,
data->current_obj,
resp,
tag)) {
/* Response is all setup for us and LogDebug
* told what was wrong
*/
PTHREAD_MUTEX_unlock(&open_owner->so_mutex);
goto out;
}
/* If opened file is already confirmed, retrun NFS4ERR_BAD_STATEID */
if (open_owner->so_owner.so_nfs4_owner.so_confirmed) {
PTHREAD_MUTEX_unlock(&open_owner->so_mutex);
res_OPEN_CONFIRM4->status = NFS4ERR_BAD_STATEID;
goto out;
}
/* Set the state as confirmed */
open_owner->so_owner.so_nfs4_owner.so_confirmed = true;
PTHREAD_MUTEX_unlock(&open_owner->so_mutex);
/* Handle stateid/seqid for success */
update_stateid(state_found, &resok->open_stateid, data, tag);
/* Save the response in the open owner */
Copy_nfs4_state_req(open_owner,
arg_OPEN_CONFIRM4->seqid,
op,
data->current_obj,
resp,
tag);
out:
dec_state_owner_ref(open_owner);
out2:
dec_state_t_ref(state_found);
return res_OPEN_CONFIRM4->status;
} /* nfs4_op_open_confirm */
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_downgrade(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
OPEN_DOWNGRADE4args * const arg_OPEN_DOWNGRADE4 =
&op->nfs_argop4_u.opopen_downgrade;
OPEN_DOWNGRADE4res * const res_OPEN_DOWNGRADE4 =
&resp->nfs_resop4_u.opopen_downgrade;
OPEN_DOWNGRADE4resok *resok =
&res_OPEN_DOWNGRADE4->OPEN_DOWNGRADE4res_u.resok4;
state_t *state_found = NULL;
state_owner_t *open_owner;
int rc;
const char *tag = "OPEN_DOWNGRADE";
char *cause = "";
resp->resop = NFS4_OP_OPEN_DOWNGRADE;
res_OPEN_DOWNGRADE4->status = NFS4_OK;
/* Do basic checks on a filehandle */
res_OPEN_DOWNGRADE4->status =
nfs4_sanity_check_FH(data, NO_FILE_TYPE, false);
if (res_OPEN_DOWNGRADE4->status != NFS4_OK)
return res_OPEN_DOWNGRADE4->status;
/* Open downgrade is done only on a file */
if (data->current_filetype != REGULAR_FILE) {
res_OPEN_DOWNGRADE4->status = NFS4ERR_INVAL;
return res_OPEN_DOWNGRADE4->status;
}
/* Check stateid correctness and get pointer to state */
rc = nfs4_Check_Stateid(&arg_OPEN_DOWNGRADE4->open_stateid,
data->current_obj,
&state_found,
data,
STATEID_SPECIAL_FOR_LOCK,
arg_OPEN_DOWNGRADE4->seqid,
data->minorversion == 0,
tag);
if (rc != NFS4_OK && rc != NFS4ERR_REPLAY) {
res_OPEN_DOWNGRADE4->status = rc;
LogDebug(COMPONENT_STATE,
"OPEN_DOWNGRADE failed nfs4_Check_Stateid");
return res_OPEN_DOWNGRADE4->status;
}
open_owner = get_state_owner_ref(state_found);
if (open_owner == NULL) {
/* Unexpected, but something just went stale. */
res_OPEN_DOWNGRADE4->status = NFS4ERR_STALE;
goto out2;
}
PTHREAD_MUTEX_lock(&open_owner->so_mutex);
/* Check seqid */
if (data->minorversion == 0 &&
!Check_nfs4_seqid(open_owner,
arg_OPEN_DOWNGRADE4->seqid,
op,
data->current_obj,
resp,
tag)) {
/* Response is all setup for us and LogDebug told what was wrong
*/
PTHREAD_MUTEX_unlock(&open_owner->so_mutex);
goto out;
}
PTHREAD_MUTEX_unlock(&open_owner->so_mutex);
/* What kind of open is it ? */
LogFullDebug(COMPONENT_STATE,
"OPEN_DOWNGRADE: Share Deny = %d Share Access = %d ",
arg_OPEN_DOWNGRADE4->share_deny,
arg_OPEN_DOWNGRADE4->share_access);
res_OPEN_DOWNGRADE4->status = nfs4_do_open_downgrade(op,
data,
open_owner,
state_found,
&cause);
if (res_OPEN_DOWNGRADE4->status != NFS4_OK) {
LogEvent(COMPONENT_STATE,
"Failed to open downgrade: %s",
cause);
goto out;
}
/* Successful exit */
res_OPEN_DOWNGRADE4->status = NFS4_OK;
/* Handle stateid/seqid for success */
update_stateid(state_found, &resok->open_stateid, data, tag);
/* Save the response in the open owner */
if (data->minorversion == 0) {
Copy_nfs4_state_req(open_owner,
arg_OPEN_DOWNGRADE4->seqid,
op,
data->current_obj,
resp,
tag);
}
out:
dec_state_owner_ref(open_owner);
out2:
dec_state_t_ref(state_found);
return res_OPEN_DOWNGRADE4->status;
} /* nfs4_op_opendowngrade */
nfsstat4 Process_nfs4_conflict(LOCK4denied *denied, state_owner_t *holder,
fsal_lock_param_t *conflict,
compound_data_t *data)
{
nfsstat4 status;
size_t owner_len;
if (holder != NULL && holder->so_owner_len != 0)
owner_len = holder->so_owner_len;
else
owner_len = unknown_owner.so_owner_len;
/* First check if the response will fit, this is a response to a
* LOCK or LOCKT operation.
*/
status = check_resp_room(data, BASE_RESP_SIZE + owner_len);
if (status != NFS4_OK)
return status;
/* Now set the op_resp_size. */
data->op_resp_size = BASE_RESP_SIZE + owner_len;
/* A conflicting lock from a different lock_owner,
* returns NFS4ERR_DENIED
*/
denied->offset = conflict->lock_start;
denied->length = conflict->lock_length;
if (conflict->lock_type == FSAL_LOCK_R)
denied->locktype = READ_LT;
else
denied->locktype = WRITE_LT;
if (holder != NULL && holder->so_owner_len != 0) {
denied->owner.owner.owner_val =
gsh_malloc(holder->so_owner_len);
denied->owner.owner.owner_len = holder->so_owner_len;
memcpy(denied->owner.owner.owner_val, holder->so_owner_val,
holder->so_owner_len);
} else {
denied->owner.owner.owner_len = unknown_owner.so_owner_len;
denied->owner.owner.owner_val = unknown_owner.so_owner_val;
}
LogFullDebug(COMPONENT_STATE, "denied->owner.owner.owner_val = %p",
denied->owner.owner.owner_val);
if (holder != NULL && holder->so_type == STATE_LOCK_OWNER_NFSV4)
denied->owner.clientid =
holder->so_owner.so_nfs4_owner.so_clientid;
else
denied->owner.clientid = 0;
/* Release any lock owner reference passed back from SAL */
if (holder != NULL)
dec_state_owner_ref(holder);
return NFS4ERR_DENIED;
}
static int nfs4_read(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp, fsal_io_direction_t io,
struct io_info *info)
{
READ4args * const arg_READ4 = &op->nfs_argop4_u.opread;
READ4res * const res_READ4 = &resp->nfs_resop4_u.opread;
uint64_t size = 0;
size_t read_size = 0;
uint64_t offset = 0;
bool eof_met = false;
void *bufferdata = NULL;
fsal_status_t fsal_status = {0, 0};
state_t *state_found = NULL;
state_t *state_open = NULL;
struct fsal_obj_handle *obj = NULL;
bool sync = false;
bool anonymous_started = false;
state_owner_t *owner = NULL;
bool bypass = false;
uint64_t MaxRead = atomic_fetch_uint64_t(&op_ctx->ctx_export->MaxRead);
uint64_t MaxOffsetRead =
atomic_fetch_uint64_t(
&op_ctx->ctx_export->MaxOffsetRead);
/* Say we are managing NFS4_OP_READ */
resp->resop = NFS4_OP_READ;
res_READ4->status = NFS4_OK;
/* Do basic checks on a filehandle Only files can be read */
if ((data->minorversion > 0)
&& nfs4_Is_Fh_DSHandle(&data->currentFH)) {
if (io == FSAL_IO_READ)
return op_dsread(op, data, resp);
else
return op_dsread_plus(op, data, resp, info);
}
res_READ4->status = nfs4_sanity_check_FH(data, REGULAR_FILE, true);
if (res_READ4->status != NFS4_OK)
return res_READ4->status;
obj = data->current_obj;
/* Check stateid correctness and get pointer to state (also
checks for special stateids) */
res_READ4->status =
nfs4_Check_Stateid(&arg_READ4->stateid, obj, &state_found, data,
STATEID_SPECIAL_ANY, 0, false, "READ");
if (res_READ4->status != NFS4_OK)
return res_READ4->status;
/* NB: After this point, if state_found == NULL, then the
stateid is all-0 or all-1 */
if (state_found != NULL) {
struct state_deleg *sdeleg;
if (info)
info->io_advise = state_found->state_data.io_advise;
switch (state_found->state_type) {
case STATE_TYPE_SHARE:
state_open = state_found;
/* Note this causes an extra refcount, but it
* simplifies logic below.
*/
inc_state_t_ref(state_open);
/**
* @todo FSF: need to check against existing locks
*/
break;
case STATE_TYPE_LOCK:
state_open = state_found->state_data.lock.openstate;
inc_state_t_ref(state_open);
/**
* @todo FSF: should check that write is in
* range of an byte range lock...
*/
break;
case STATE_TYPE_DELEG:
/* Check if the delegation state allows READ */
sdeleg = &state_found->state_data.deleg;
if (!(sdeleg->sd_type & OPEN_DELEGATE_READ) ||
(sdeleg->sd_state != DELEG_GRANTED)) {
/* Invalid delegation for this operation. */
LogDebug(COMPONENT_STATE,
"Delegation type:%d state:%d",
sdeleg->sd_type,
sdeleg->sd_state);
res_READ4->status = NFS4ERR_BAD_STATEID;
goto out;
}
state_open = NULL;
break;
default:
res_READ4->status = NFS4ERR_BAD_STATEID;
LogDebug(COMPONENT_NFS_V4_LOCK,
"READ with invalid statid of type %d",
state_found->state_type);
goto out;
}
/* This is a read operation, this means that the file
MUST have been opened for reading */
if (state_open != NULL
&& (state_open->state_data.share.
share_access & OPEN4_SHARE_ACCESS_READ) == 0) {
/* Even if file is open for write, the client
* may do accidently read operation (caching).
* Because of this, READ is allowed if not
* explicitly denied. See page 112 in RFC 7530
* for more details.
*/
if (state_open->state_data.share.
share_deny & OPEN4_SHARE_DENY_READ) {
/* Bad open mode, return NFS4ERR_OPENMODE */
res_READ4->status = NFS4ERR_OPENMODE;
if (isDebug(COMPONENT_NFS_V4_LOCK)) {
char str[LOG_BUFF_LEN] = "\0";
struct display_buffer dspbuf = {
sizeof(str), str, str};
display_stateid(&dspbuf, state_found);
LogDebug(COMPONENT_NFS_V4_LOCK,
"READ %s doesn't have OPEN4_SHARE_ACCESS_READ",
str);
}
goto out;
}
}
/**
* @todo : this piece of code looks a bit suspicious
* (see Rong's mail)
*
* @todo: ACE: This works for now. How do we want to
* handle owner confirmation across NFSv4.0/NFSv4.1?
* Do we want to mark every NFSv4.1 owner
* pre-confirmed, or make the check conditional on
* minorversion like we do here?
*/
switch (state_found->state_type) {
case STATE_TYPE_SHARE:
if (data->minorversion == 0 &&
!state_owner_confirmed(state_found)) {
res_READ4->status = NFS4ERR_BAD_STATEID;
goto out;
}
break;
case STATE_TYPE_LOCK:
case STATE_TYPE_DELEG:
break;
default:
/* Sanity check: all other types are illegal.
* we should not got that place (similar check
* above), anyway it costs nothing to add this
* test */
res_READ4->status = NFS4ERR_BAD_STATEID;
goto out;
}
} else {
/* Special stateid, no open state, check to see if any
share conflicts */
state_open = NULL;
/* Special stateid, no open state, check to see if any share
* conflicts The stateid is all-0 or all-1
*/
bypass = arg_READ4->stateid.seqid != 0;
res_READ4->status = nfs4_Errno_state(
state_share_anonymous_io_start(
obj,
OPEN4_SHARE_ACCESS_READ,
arg_READ4->stateid.seqid != 0
? SHARE_BYPASS_READ
: SHARE_BYPASS_NONE));
if (res_READ4->status != NFS4_OK)
goto out;
anonymous_started = true;
}
/* Need to permission check the read. */
fsal_status = obj->obj_ops.test_access(obj, FSAL_READ_ACCESS,
NULL, NULL, true);
if (fsal_status.major == ERR_FSAL_ACCESS) {
/* Test for execute permission */
fsal_status = fsal_access(obj,
FSAL_MODE_MASK_SET(FSAL_X_OK) |
FSAL_ACE4_MASK_SET
(FSAL_ACE_PERM_EXECUTE));
}
if (FSAL_IS_ERROR(fsal_status)) {
res_READ4->status = nfs4_Errno_status(fsal_status);
goto done;
}
/* Get the size and offset of the read operation */
offset = arg_READ4->offset;
size = arg_READ4->count;
if (MaxOffsetRead < UINT64_MAX) {
LogFullDebug(COMPONENT_NFS_V4,
"Read offset=%" PRIu64
" size=%" PRIu64 " MaxOffSet=%" PRIu64,
offset, size,
MaxOffsetRead);
if ((offset + size) > MaxOffsetRead) {
LogEvent(COMPONENT_NFS_V4,
"A client tryed to violate max file size %"
PRIu64 " for exportid #%hu",
MaxOffsetRead,
op_ctx->ctx_export->export_id);
res_READ4->status = NFS4ERR_FBIG;
goto done;
}
}
if (size > MaxRead) {
/* the client asked for too much data, this should normally
not happen because client will get FATTR4_MAXREAD value
at mount time */
if (info == NULL ||
info->io_content.what != NFS4_CONTENT_HOLE) {
LogFullDebug(COMPONENT_NFS_V4,
"read requested size = %"PRIu64
" read allowed size = %" PRIu64,
size, MaxRead);
size = MaxRead;
}
}
/* If size == 0, no I/O is to be made and everything is
alright */
if (size == 0) {
/* A size = 0 can not lead to EOF */
res_READ4->READ4res_u.resok4.eof = false;
res_READ4->READ4res_u.resok4.data.data_len = 0;
res_READ4->READ4res_u.resok4.data.data_val = NULL;
res_READ4->status = NFS4_OK;
goto done;
}
/* Some work is to be done */
bufferdata = gsh_malloc_aligned(4096, size);
if (!anonymous_started && data->minorversion == 0) {
owner = get_state_owner_ref(state_found);
if (owner != NULL) {
op_ctx->clientid =
&owner->so_owner.so_nfs4_owner.so_clientid;
}
}
if (obj->fsal->m_ops.support_ex(obj)) {
/* Call the new fsal_read2 */
fsal_status = fsal_read2(obj, bypass, state_found, offset, size,
&read_size, bufferdata, &eof_met,
info);
} else {
/* Call legacy fsal_rdwr */
fsal_status = fsal_rdwr(obj, io, offset, size, &read_size,
bufferdata, &eof_met, &sync, info);
}
if (FSAL_IS_ERROR(fsal_status)) {
res_READ4->status = nfs4_Errno_status(fsal_status);
gsh_free(bufferdata);
res_READ4->READ4res_u.resok4.data.data_val = NULL;
goto done;
}
if (!eof_met) {
/** @todo FSF: add a config option for this behavior?
*/
/* Need to check against filesize for ESXi clients */
struct attrlist attrs;
fsal_prepare_attrs(&attrs, ATTR_SIZE);
if (!FSAL_IS_ERROR(obj->obj_ops.getattrs(obj, &attrs)))
eof_met = (offset + read_size) >= attrs.filesize;
/* Done with the attrs */
fsal_release_attrs(&attrs);
}
if (!anonymous_started && data->minorversion == 0)
op_ctx->clientid = NULL;
res_READ4->READ4res_u.resok4.data.data_len = read_size;
res_READ4->READ4res_u.resok4.data.data_val = bufferdata;
LogFullDebug(COMPONENT_NFS_V4,
"NFS4_OP_READ: offset = %" PRIu64
" read length = %zu eof=%u", offset, read_size, eof_met);
/* Is EOF met or not ? */
res_READ4->READ4res_u.resok4.eof = eof_met;
/* Say it is ok */
res_READ4->status = NFS4_OK;
done:
if (anonymous_started)
state_share_anonymous_io_done(obj, OPEN4_SHARE_ACCESS_READ);
server_stats_io_done(size, read_size,
(res_READ4->status == NFS4_OK) ? true : false,
false);
out:
if (owner != NULL)
dec_state_owner_ref(owner);
if (state_found != NULL)
dec_state_t_ref(state_found);
if (state_open != NULL)
dec_state_t_ref(state_open);
return res_READ4->status;
} /* nfs4_op_read */
int nlm4_Unlock(nfs_arg_t *args, struct svc_req *req, nfs_res_t *res)
{
nlm4_unlockargs *arg = &args->arg_nlm4_unlock;
struct fsal_obj_handle *obj;
state_status_t state_status = STATE_SUCCESS;
char buffer[MAXNETOBJ_SZ * 2] = "\0";
state_nsm_client_t *nsm_client;
state_nlm_client_t *nlm_client;
state_owner_t *nlm_owner;
fsal_lock_param_t lock;
int rc;
state_t *state;
/* NLM doesn't have a BADHANDLE error, nor can rpc_execute deal with
* responding to an NLM_*_MSG call, so we check here if the export is
* NULL and if so, handle the response.
*/
if (op_ctx->ctx_export == NULL) {
res->res_nlm4.stat.stat = NLM4_STALE_FH;
LogInfo(COMPONENT_NLM, "INVALID HANDLE: nlm4_Unlock");
return NFS_REQ_OK;
}
netobj_to_string(&arg->cookie, buffer, sizeof(buffer));
LogDebug(COMPONENT_NLM,
"REQUEST PROCESSING: Calling nlm4_Unlock svid=%d off=%llx len=%llx cookie=%s",
(int)arg->alock.svid,
(unsigned long long)arg->alock.l_offset,
(unsigned long long)arg->alock.l_len, buffer);
copy_netobj(&res->res_nlm4test.cookie, &arg->cookie);
if (nfs_in_grace()) {
res->res_nlm4.stat.stat = NLM4_DENIED_GRACE_PERIOD;
LogDebug(COMPONENT_NLM,
"REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(res->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
/* unlock doesn't care if owner is found */
rc = nlm_process_parameters(req,
false,
&arg->alock,
&lock,
&obj,
CARE_NOT,
&nsm_client,
&nlm_client,
&nlm_owner,
NULL,
0,
&state);
if (rc >= 0) {
/* resent the error back to the client */
res->res_nlm4.stat.stat = (nlm4_stats) rc;
LogDebug(COMPONENT_NLM,
"REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(res->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
if (state != NULL)
state_status =
state_unlock(obj, state, nlm_owner, false, 0, &lock);
if (state_status != STATE_SUCCESS) {
/* Unlock could fail in the FSAL and make a bit of a mess,
* especially if we are in out of memory situation. Such an
* error is logged by Cache Inode.
*/
res->res_nlm4test.test_stat.stat =
nlm_convert_state_error(state_status);
} else {
res->res_nlm4.stat.stat = NLM4_GRANTED;
}
/* Release the NLM Client and NLM Owner references we have */
if (state != NULL)
dec_state_t_ref(state);
dec_nsm_client_ref(nsm_client);
dec_nlm_client_ref(nlm_client);
dec_state_owner_ref(nlm_owner);
obj->obj_ops.put_ref(obj);
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(res->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
int nfs4_op_lockt(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
/* Alias for arguments */
LOCKT4args * const arg_LOCKT4 = &op->nfs_argop4_u.oplockt;
/* Alias for response */
LOCKT4res * const res_LOCKT4 = &resp->nfs_resop4_u.oplockt;
/* Return code from state calls */
state_status_t state_status = STATE_SUCCESS;
/* Client id record */
nfs_client_id_t *clientid = NULL;
/* Lock owner name */
state_nfs4_owner_name_t owner_name;
/* Lock owner record */
state_owner_t *lock_owner = NULL;
/* Owner of conflicting lock */
state_owner_t *conflict_owner = NULL;
/* Description of lock to test */
fsal_lock_param_t lock_desc = { FSAL_NO_LOCK, 0, 0 };
/* Description of conflicting lock */
fsal_lock_param_t conflict_desc;
/* return code from id confirm calls */
int rc;
LogDebug(COMPONENT_NFS_V4_LOCK,
"Entering NFS v4 LOCKT handler ----------------------------");
/* Initialize to sane default */
resp->resop = NFS4_OP_LOCKT;
res_LOCKT4->status = nfs4_sanity_check_FH(data, REGULAR_FILE, false);
if (res_LOCKT4->status != NFS4_OK)
return res_LOCKT4->status;
/* Lock length should not be 0 */
if (arg_LOCKT4->length == 0LL) {
res_LOCKT4->status = NFS4ERR_INVAL;
return res_LOCKT4->status;
}
if (nfs_in_grace()) {
res_LOCKT4->status = NFS4ERR_GRACE;
return res_LOCKT4->status;
}
/* Convert lock parameters to internal types */
switch (arg_LOCKT4->locktype) {
case READ_LT:
case READW_LT:
lock_desc.lock_type = FSAL_LOCK_R;
break;
case WRITE_LT:
case WRITEW_LT:
lock_desc.lock_type = FSAL_LOCK_W;
break;
default:
LogDebug(COMPONENT_NFS_V4_LOCK,
"Invalid lock type");
res_LOCKT4->status = NFS4ERR_INVAL;
return res_LOCKT4->status;
}
lock_desc.lock_start = arg_LOCKT4->offset;
if (arg_LOCKT4->length != STATE_LOCK_OFFSET_EOF)
lock_desc.lock_length = arg_LOCKT4->length;
else
lock_desc.lock_length = 0;
/* Check for range overflow. Comparing beyond 2^64 is not
* possible in 64 bit 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_LOCKT4->status = NFS4ERR_INVAL;
return res_LOCKT4->status;
}
/* Check clientid */
rc = nfs_client_id_get_confirmed(data->minorversion == 0 ?
arg_LOCKT4->owner.clientid :
data->session->clientid,
&clientid);
if (rc != CLIENT_ID_SUCCESS) {
res_LOCKT4->status = clientid_error_to_nfsstat(rc);
return res_LOCKT4->status;
}
PTHREAD_MUTEX_lock(&clientid->cid_mutex);
if (data->minorversion == 0 && !reserve_lease(clientid)) {
PTHREAD_MUTEX_unlock(&clientid->cid_mutex);
dec_client_id_ref(clientid);
res_LOCKT4->status = NFS4ERR_EXPIRED;
return res_LOCKT4->status;
}
PTHREAD_MUTEX_unlock(&clientid->cid_mutex);
/* Is this lock_owner known ? */
convert_nfs4_lock_owner(&arg_LOCKT4->owner, &owner_name);
/* 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,
NULL,
0,
NULL,
CARE_ALWAYS);
LogStateOwner("Lock: ", lock_owner);
if (lock_owner == NULL) {
LogEvent(COMPONENT_NFS_V4_LOCK,
"LOCKT unable to create lock owner");
res_LOCKT4->status = NFS4ERR_SERVERFAULT;
goto out;
}
LogLock(COMPONENT_NFS_V4_LOCK, NIV_FULL_DEBUG, "LOCKT",
data->current_entry, lock_owner, &lock_desc);
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 test
* the lock in SAL (and FSAL).
*/
state_status = state_test(data->current_entry,
lock_owner,
&lock_desc,
&conflict_owner,
&conflict_desc);
if (state_status == STATE_LOCK_CONFLICT) {
/* A conflicting lock from a different lock_owner,
* returns NFS4ERR_DENIED
*/
LogStateOwner("Conflict: ", conflict_owner);
Process_nfs4_conflict(&res_LOCKT4->LOCKT4res_u.denied,
conflict_owner,
&conflict_desc);
}
if (data->minorversion == 0)
op_ctx->clientid = NULL;
/* Release NFS4 Open Owner reference */
dec_state_owner_ref(lock_owner);
/* Return result */
res_LOCKT4->status = nfs4_Errno_state(state_status);
out:
/* Update the lease before exit */
if (data->minorversion == 0) {
PTHREAD_MUTEX_lock(&clientid->cid_mutex);
update_lease(clientid);
PTHREAD_MUTEX_unlock(&clientid->cid_mutex);
}
dec_client_id_ref(clientid);
return res_LOCKT4->status;
} /* nfs4_op_lockt */
int nlm4_Lock(nfs_arg_t * parg /* IN */ ,
exportlist_t * pexport /* IN */ ,
fsal_op_context_t * pcontext /* IN */ ,
cache_inode_client_t * pclient /* INOUT */ ,
hash_table_t * ht /* INOUT */ ,
struct svc_req * preq /* IN */ ,
nfs_res_t * pres /* OUT */ )
{
nlm4_lockargs * arg = &parg->arg_nlm4_lock;
cache_entry_t * pentry;
state_status_t state_status = CACHE_INODE_SUCCESS;
char buffer[MAXNETOBJ_SZ * 2];
state_nsm_client_t * nsm_client;
state_nlm_client_t * nlm_client;
state_owner_t * nlm_owner, * holder;
state_lock_desc_t lock, conflict;
int rc;
state_block_data_t * pblock_data;
netobj_to_string(&arg->cookie, buffer, 1024);
LogDebug(COMPONENT_NLM,
"REQUEST PROCESSING: Calling nlm4_Lock svid=%d off=%llx len=%llx cookie=%s",
(int) arg->alock.svid,
(unsigned long long) arg->alock.l_offset,
(unsigned long long) arg->alock.l_len, buffer);
if(!copy_netobj(&pres->res_nlm4test.cookie, &arg->cookie))
{
pres->res_nlm4.stat.stat = NLM4_FAILED;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Test %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
/* allow only reclaim lock request during recovery */
if(in_nlm_grace_period() && !arg->reclaim)
{
pres->res_nlm4.stat.stat = NLM4_DENIED_GRACE_PERIOD;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Lock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
if(!in_nlm_grace_period() && arg->reclaim)
{
pres->res_nlm4.stat.stat = NLM4_DENIED_GRACE_PERIOD;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Lock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
rc = nlm_process_parameters(preq,
arg->exclusive,
&arg->alock,
&lock,
ht,
&pentry,
pcontext,
pclient,
CARE_MONITOR,
&nsm_client,
&nlm_client,
&nlm_owner,
&pblock_data);
if(rc >= 0)
{
/* Present the error back to the client */
pres->res_nlm4.stat.stat = (nlm4_stats)rc;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
/* Cast the state number into a state pointer to protect
* locks from a client that has rebooted from the SM_NOTIFY
* that will release old locks
*/
if(state_lock(pentry,
pcontext,
nlm_owner,
(void *) (ptrdiff_t) arg->state,
arg->block,
pblock_data,
&lock,
&holder,
&conflict,
pclient,
&state_status) != STATE_SUCCESS)
{
pres->res_nlm4test.test_stat.stat = nlm_convert_state_error(state_status);
if(state_status == STATE_LOCK_CONFLICT)
{
nlm_process_conflict(&pres->res_nlm4test.test_stat.nlm4_testrply_u.holder,
holder,
&conflict,
pclient);
}
/* If we didn't block, release the block data */
if(state_status != STATE_LOCK_BLOCKED && pblock_data != NULL)
Mem_Free(pblock_data);
}
else
{
pres->res_nlm4.stat.stat = NLM4_GRANTED;
}
/* Release the NLM Client and NLM Owner references we have */
dec_nsm_client_ref(nsm_client);
dec_nlm_client_ref(nlm_client);
dec_state_owner_ref(nlm_owner, pclient);
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Lock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
int nfs4_op_release_lockowner(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
RELEASE_LOCKOWNER4args * const arg_RELEASE_LOCKOWNER4 =
&op->nfs_argop4_u.oprelease_lockowner;
RELEASE_LOCKOWNER4res * const res_RELEASE_LOCKOWNER4 =
&resp->nfs_resop4_u.oprelease_lockowner;
nfs_client_id_t *nfs_client_id;
state_owner_t *lock_owner;
state_nfs4_owner_name_t owner_name;
int rc;
LogDebug(COMPONENT_NFS_V4_LOCK,
"Entering NFS v4 RELEASE_LOCKOWNER handler ----------------------");
resp->resop = NFS4_OP_RELEASE_LOCKOWNER;
res_RELEASE_LOCKOWNER4->status = NFS4_OK;
if (data->minorversion > 0) {
res_RELEASE_LOCKOWNER4->status = NFS4ERR_NOTSUPP;
return res_RELEASE_LOCKOWNER4->status;
}
/* Check clientid */
rc = nfs_client_id_get_confirmed(arg_RELEASE_LOCKOWNER4->lock_owner.
clientid,
&nfs_client_id);
if (rc != CLIENT_ID_SUCCESS) {
res_RELEASE_LOCKOWNER4->status = clientid_error_to_nfsstat(rc);
goto out2;
}
PTHREAD_MUTEX_lock(&nfs_client_id->cid_mutex);
if (!reserve_lease(nfs_client_id)) {
PTHREAD_MUTEX_unlock(&nfs_client_id->cid_mutex);
dec_client_id_ref(nfs_client_id);
res_RELEASE_LOCKOWNER4->status = NFS4ERR_EXPIRED;
goto out2;
}
PTHREAD_MUTEX_unlock(&nfs_client_id->cid_mutex);
/* look up the lock owner and see if we can find it */
convert_nfs4_lock_owner(&arg_RELEASE_LOCKOWNER4->lock_owner,
&owner_name);
/* If this lock owner is not known yet, allocated
* and set up a new one
*/
lock_owner = create_nfs4_owner(&owner_name,
nfs_client_id,
STATE_LOCK_OWNER_NFSV4,
NULL,
0,
NULL,
CARE_NOT);
if (lock_owner == NULL) {
/* the owner doesn't exist, we are done */
LogDebug(COMPONENT_NFS_V4_LOCK, "lock owner does not exist");
res_RELEASE_LOCKOWNER4->status = NFS4_OK;
goto out1;
}
res_RELEASE_LOCKOWNER4->status = release_lock_owner(lock_owner);
/* Release the reference to the lock owner acquired
* via create_nfs4_owner
*/
dec_state_owner_ref(lock_owner);
out1:
/* Update the lease before exit */
PTHREAD_MUTEX_lock(&nfs_client_id->cid_mutex);
update_lease(nfs_client_id);
PTHREAD_MUTEX_unlock(&nfs_client_id->cid_mutex);
dec_client_id_ref(nfs_client_id);
out2:
LogDebug(COMPONENT_NFS_V4_LOCK,
"Leaving NFS v4 RELEASE_LOCKOWNER handler -----------------------");
return res_RELEASE_LOCKOWNER4->status;
} /* nfs4_op_release_lock_owner */
int nlm4_Unshare(nfs_arg_t *args, struct svc_req *req, nfs_res_t *res)
{
nlm4_shareargs *arg = &args->arg_nlm4_share;
struct fsal_obj_handle *obj;
state_status_t state_status = STATE_SUCCESS;
char buffer[MAXNETOBJ_SZ * 2] = "\0";
state_nsm_client_t *nsm_client;
state_nlm_client_t *nlm_client;
state_owner_t *nlm_owner;
state_t *nlm_state;
int rc;
/* NLM doesn't have a BADHANDLE error, nor can rpc_execute deal with
* responding to an NLM_*_MSG call, so we check here if the export is
* NULL and if so, handle the response.
*/
if (op_ctx->ctx_export == NULL) {
res->res_nlm4share.stat = NLM4_STALE_FH;
LogInfo(COMPONENT_NLM, "INVALID HANDLE: NLM4_UNSHARE");
return NFS_REQ_OK;
}
res->res_nlm4share.sequence = 0;
netobj_to_string(&arg->cookie, buffer, 1024);
if (isDebug(COMPONENT_NLM)) {
char str[LEN_FH_STR];
char oh[MAXNETOBJ_SZ * 2] = "\0";
sprint_fhandle3(str, (struct nfs_fh3 *)&arg->share.fh);
netobj_to_string(&arg->share.oh, oh, 1024);
LogDebug(COMPONENT_NLM,
"REQUEST PROCESSING: Calling NLM4_UNSHARE handle: %s, cookie=%s, reclaim=%s, owner=%s, access=%d, deny=%d",
str, buffer, arg->reclaim ? "yes" : "no", oh,
arg->share.access,
arg->share.mode);
}
copy_netobj(&res->res_nlm4share.cookie, &arg->cookie);
rc = nlm_process_share_parms(req,
&arg->share,
op_ctx->fsal_export,
&obj,
CARE_NOT,
&nsm_client,
&nlm_client,
&nlm_owner,
&nlm_state);
if (rc >= 0) {
/* Present the error back to the client */
res->res_nlm4share.stat = (nlm4_stats) rc;
LogDebug(COMPONENT_NLM,
"REQUEST RESULT: NLM4_UNSHARE %s",
lock_result_str(res->res_nlm4share.stat));
return NFS_REQ_OK;
}
state_status = state_nlm_share(obj,
arg->share.access,
arg->share.mode,
nlm_owner,
nlm_state,
false,
true);
if (state_status != STATE_SUCCESS) {
res->res_nlm4share.stat =
nlm_convert_state_error(state_status);
} else {
res->res_nlm4share.stat = NLM4_GRANTED;
}
/* Release the NLM Client and NLM Owner references we have */
dec_nsm_client_ref(nsm_client);
dec_nlm_client_ref(nlm_client);
dec_state_owner_ref(nlm_owner);
obj->obj_ops->put_ref(obj);
dec_nlm_state_ref(nlm_state);
LogDebug(COMPONENT_NLM, "REQUEST RESULT: NLM4_UNSHARE %s",
lock_result_str(res->res_nlm4share.stat));
return NFS_REQ_OK;
}
int nlm4_Unlock(nfs_arg_t * parg /* IN */ ,
exportlist_t * pexport /* IN */ ,
fsal_op_context_t * pcontext /* IN */ ,
cache_inode_client_t * pclient /* INOUT */ ,
hash_table_t * ht /* INOUT */ ,
struct svc_req *preq /* IN */ ,
nfs_res_t * pres /* OUT */ )
{
nlm4_unlockargs * arg = &parg->arg_nlm4_unlock;
cache_entry_t * pentry;
state_status_t state_status = CACHE_INODE_SUCCESS;
char buffer[MAXNETOBJ_SZ * 2];
state_nsm_client_t * nsm_client;
state_nlm_client_t * nlm_client;
state_owner_t * nlm_owner;
state_lock_desc_t lock;
int rc;
netobj_to_string(&arg->cookie, buffer, sizeof(buffer));
LogDebug(COMPONENT_NLM,
"REQUEST PROCESSING: Calling nlm4_Unlock svid=%d off=%llx len=%llx cookie=%s",
(int) arg->alock.svid,
(unsigned long long) arg->alock.l_offset,
(unsigned long long) arg->alock.l_len,
buffer);
if(!copy_netobj(&pres->res_nlm4test.cookie, &arg->cookie))
{
pres->res_nlm4.stat.stat = NLM4_FAILED;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
if(in_nlm_grace_period())
{
pres->res_nlm4.stat.stat = NLM4_DENIED_GRACE_PERIOD;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
rc = nlm_process_parameters(preq,
FALSE, /* exlcusive doesn't matter */
&arg->alock,
&lock,
ht,
&pentry,
pcontext,
pclient,
CARE_NOT, /* unlock doesn't care if owner is found */
&nsm_client,
&nlm_client,
&nlm_owner,
NULL);
if(rc >= 0)
{
/* Present the error back to the client */
pres->res_nlm4.stat.stat = (nlm4_stats)rc;
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
if(state_unlock(pentry,
pcontext,
nlm_owner,
NULL,
&lock,
pclient,
&state_status) != STATE_SUCCESS)
{
/* Unlock could fail in the FSAL and make a bit of a mess, especially if
* we are in out of memory situation. Such an error is logged by
* Cache Inode.
*/
pres->res_nlm4test.test_stat.stat = nlm_convert_state_error(state_status);
}
else
{
pres->res_nlm4.stat.stat = NLM4_GRANTED;
}
/* Release the NLM Client and NLM Owner references we have */
dec_nsm_client_ref(nsm_client);
dec_nlm_client_ref(nlm_client);
dec_state_owner_ref(nlm_owner, pclient);
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Unlock %s",
lock_result_str(pres->res_nlm4.stat.stat));
return NFS_REQ_OK;
}
int nlm4_Share(nfs_arg_t *args, struct svc_req *req, nfs_res_t *res)
{
nlm4_shareargs *arg = &args->arg_nlm4_share;
struct fsal_obj_handle *obj;
state_status_t state_status = STATE_SUCCESS;
char buffer[MAXNETOBJ_SZ * 2];
state_nsm_client_t *nsm_client;
state_nlm_client_t *nlm_client;
state_owner_t *nlm_owner;
state_t *nlm_state;
int rc;
int grace = nfs_in_grace();
/* Indicate if we let FSAL to handle requests during grace. */
bool_t fsal_grace = false;
/* NLM doesn't have a BADHANDLE error, nor can rpc_execute deal with
* responding to an NLM_*_MSG call, so we check here if the export is
* NULL and if so, handle the response.
*/
if (op_ctx->ctx_export == NULL) {
res->res_nlm4share.stat = NLM4_STALE_FH;
LogInfo(COMPONENT_NLM, "INVALID HANDLE: nlm4_Share");
return NFS_REQ_OK;
}
res->res_nlm4share.sequence = 0;
netobj_to_string(&arg->cookie, buffer, 1024);
LogDebug(COMPONENT_NLM,
"REQUEST PROCESSING: Calling nlm4_Share cookie=%s reclaim=%s",
buffer,
arg->reclaim ? "yes" : "no");
copy_netobj(&res->res_nlm4share.cookie, &arg->cookie);
/* Allow only reclaim share request during recovery and visa versa.
* Note: NLM_SHARE is indicated to be non-monitored, however, it does
* have a reclaim flag, so we will honor the reclaim flag if used.
*/
if (grace) {
if (op_ctx->fsal_export->exp_ops.
fs_supports(op_ctx->fsal_export, fso_grace_method))
fsal_grace = true;
if (!fsal_grace && !arg->reclaim) {
res->res_nlm4share.stat = NLM4_DENIED_GRACE_PERIOD;
LogDebug(COMPONENT_NLM,
"REQUEST RESULT: nlm4_Share %s",
lock_result_str(res->res_nlm4share.stat));
return NFS_REQ_OK;
}
} else if (arg->reclaim) {
res->res_nlm4share.stat = NLM4_DENIED_GRACE_PERIOD;
LogDebug(COMPONENT_NLM,
"REQUEST RESULT: nlm4_Share %s",
lock_result_str(res->res_nlm4share.stat));
return NFS_REQ_OK;
}
rc = nlm_process_share_parms(req,
&arg->share,
op_ctx->fsal_export,
&obj,
CARE_NO_MONITOR,
&nsm_client,
&nlm_client,
&nlm_owner,
&nlm_state);
if (rc >= 0) {
/* Present the error back to the client */
res->res_nlm4share.stat = (nlm4_stats) rc;
LogDebug(COMPONENT_NLM,
"REQUEST RESULT: nlm4_Share %s",
lock_result_str(res->res_nlm4share.stat));
return NFS_REQ_OK;
}
state_status = state_nlm_share(obj,
arg->share.access,
arg->share.mode,
nlm_owner,
nlm_state,
grace);
if (state_status != STATE_SUCCESS) {
res->res_nlm4share.stat =
nlm_convert_state_error(state_status);
} else {
res->res_nlm4share.stat = NLM4_GRANTED;
}
/* Release the NLM Client and NLM Owner references we have */
dec_nsm_client_ref(nsm_client);
dec_nlm_client_ref(nlm_client);
dec_state_owner_ref(nlm_owner);
obj->obj_ops.put_ref(obj);
dec_nlm_state_ref(nlm_state);
LogDebug(COMPONENT_NLM, "REQUEST RESULT: nlm4_Share %s",
lock_result_str(res->res_nlm4share.stat));
return NFS_REQ_OK;
}