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