/*
* Purpose: Test whether a specified lock would be granted if requested
* Returns: nlm_granted (or error code)
* Notes:
*/
nlm4_testres *
nlm4_test_4_svc(nlm4_testargs *arg, struct svc_req *rqstp)
{
static nlm4_testres result;
struct nlm4_holder *holder;
if (debug_level)
log_from_addr("nlm4_test", rqstp);
holder = testlock(&arg->alock, LOCK_V4);
/*
* Copy the cookie from the argument into the result. Note that this
* is slightly hazardous, as the structure contains a pointer to a
* malloc()ed buffer that will get freed by the caller. However, the
* main function transmits the result before freeing the argument
* so it is in fact safe.
*/
result.cookie = arg->cookie;
if (holder == NULL) {
result.stat.stat = nlm4_granted;
} else {
result.stat.stat = nlm4_denied;
memcpy(&result.stat.nlm4_testrply_u.holder, holder,
sizeof(struct nlm4_holder));
}
return &result;
}
/*
* Purpose: Accept result from earlier nlm_test_msg() call
* Returns: Nothing
*/
void *
nlm_test_res_1_svc(nlm_testres *arg, struct svc_req *rqstp)
{
if (debug_level)
log_from_addr("nlm_test_res", rqstp);
return (NULL);
}
/*
* Purpose: Accept result from earlier nlm_granted_msg() call
* Returns: Nothing
*/
void *
/*ARGSUSED*/
nlm_granted_res_1_svc(nlm_res *arg, struct svc_req *rqstp)
{
if (debug_level)
log_from_addr("nlm_granted_res", rqstp);
return NULL;
}
/*
* Purpose: Accept result from earlier nlm_test_msg() call
* Returns: Nothing
*/
void *
/*ARGSUSED*/
nlm4_test_res_4_svc(nlm4_testres *arg, struct svc_req *rqstp)
{
if (debug_level)
log_from_addr("nlm4_test_res", rqstp);
return NULL;
}
/*
* Purpose: Accept result from earlier nlm_test_msg() call
* Returns: Nothing
*/
void *
nlm_test_res_1_svc(nlm_testres *arg, struct svc_req *rqstp)
{
if (debug_level)
log_from_addr("nlm_test_res", rqstp);
(void)lock_answer(-1, &arg->cookie, arg->stat.stat,
&arg->stat.nlm_testrply_u.holder.svid, NLM_VERS);
return (NULL);
}
/*
* Purpose: Accept result from earlier nlm_lock_msg() call
* Returns: Nothing
*/
void *
nlm_lock_res_1_svc(nlm_res *arg, struct svc_req *rqstp)
{
if (debug_level)
log_from_addr("nlm_lock_res", rqstp);
(void)lock_answer(-1, &arg->cookie, arg->stat.stat, NULL, NLM_VERS);
return (NULL);
}
/*
* Purpose: Release all locks held by a named client
* Returns: Nothing
* Notes: Potential denial of service security problem here - the
* locks to be released are specified by a host name, independent
* of the address from which the request has arrived.
* Should probably be rejected if the named host has been
* using monitored locks.
*/
void *
/*ARGSUSED*/
nlm_free_all_3_svc(nlm_notify *arg, struct svc_req *rqstp)
{
static char dummy;
if (debug_level)
log_from_addr("nlm_free_all", rqstp);
return &dummy;
}
/*
* Purpose: Release a DOS-style lock
* Returns: nlm_granted, unless in grace period
* Notes:
*/
nlm_shareres *
nlm_unshare_3_svc(nlm_shareargs *arg, struct svc_req *rqstp)
{
static nlm_shareres result;
if (debug_level)
log_from_addr("nlm_unshare", rqstp);
result.cookie = arg->cookie;
result.stat = nlm_granted;
result.sequence = 1234356; /* X/Open says this field is ignored? */
return &result;
}
/*
* Purpose: non-monitored version of nlm_lock()
* Returns: as for nlm_lock()
* Notes: These locks are in the same style as the standard nlm_lock,
* but the rpc.statd should not be called to establish a
* monitor for the client machine, since that machine is
* declared not to be running a rpc.statd, and so would not
* respond to the statd protocol.
*/
nlm_res *
nlm_nm_lock_3_svc(nlm_lockargs *arg, struct svc_req *rqstp)
{
static nlm_res result;
if (debug_level)
log_from_addr("nlm_nm_lock", rqstp);
/* copy cookie from arg to result. See comment in nlm_test_1() */
result.cookie = arg->cookie;
result.stat.stat = nlm_granted;
return &result;
}
/*
* Purpose: Release an existing lock
* Returns: Always granted, unless during grace period
* Notes: "no such lock" error condition is ignored, as the
* protocol uses unreliable UDP datagrams, and may well
* re-try an unlock that has already succeeded.
*/
nlm4_res *
nlm4_unlock_4_svc(nlm4_unlockargs *arg, struct svc_req *rqstp)
{
static nlm4_res result;
if (debug_level)
log_from_addr("nlm4_unlock", rqstp);
result.stat.stat = unlock(&arg->alock, LOCK_V4);
result.cookie = arg->cookie;
return &result;
}
void *
nlm4_granted_msg_4_svc(nlm4_testargs *arg, struct svc_req *rqstp)
{
static nlm4_res result;
if (debug_level)
log_from_addr("nlm4_granted_msg", rqstp);
result.cookie = arg->cookie;
result.stat.stat = nlm4_granted;
transmit4_result(NLM4_GRANTED_RES, &result, svc_getcaller(rqstp->rq_xprt));
return NULL;
}
void *
nlm_granted_msg_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
{
static nlm_res res;
if (debug_level)
log_from_addr("nlm_granted_msg", rqstp);
res.cookie = arg->cookie;
res.stat.stat = nlm_granted;
transmit_result(NLM_GRANTED_RES, &res,
(struct sockaddr *)svc_getcaller(rqstp->rq_xprt));
return (NULL);
}
/*
* Purposes: Establish a lock
* Returns: granted, denied or blocked
* Notes: *** grace period support missing
*/
nlm4_res *
nlm4_lock_4_svc(nlm4_lockargs *arg, struct svc_req *rqstp)
{
static nlm4_res result;
if (debug_level)
log_from_addr("nlm4_lock", rqstp);
/* copy cookie from arg to result. See comment in nlm_test_4() */
result.cookie = arg->cookie;
result.stat.stat = getlock(arg, rqstp, LOCK_MON | LOCK_V4);
return &result;
}
void *
nlm4_unlock_msg_4_svc(nlm4_unlockargs *arg, struct svc_req *rqstp)
{
static nlm4_res result;
if (debug_level)
log_from_addr("nlm4_unlock_msg", rqstp);
result.stat.stat = unlock(&arg->alock, LOCK_V4);
result.cookie = arg->cookie;
transmit4_result(NLM4_UNLOCK_RES, &result, svc_getcaller(rqstp->rq_xprt));
return NULL;
}
void *
nlm_test_msg_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
{
nlm_testres result;
static char dummy;
struct sockaddr_in *addr;
CLIENT *cli;
int success;
struct timeval timeo;
struct nlm4_lock arg4;
struct nlm4_holder *holder;
nlmtonlm4(&arg->alock, &arg4);
if (debug_level)
log_from_addr("nlm_test_msg", rqstp);
holder = testlock(&arg4, 0);
result.cookie = arg->cookie;
if (holder == NULL) {
result.stat.stat = nlm_granted;
} else {
result.stat.stat = nlm_denied;
memcpy(&result.stat.nlm_testrply_u.holder, holder,
sizeof(struct nlm_holder));
result.stat.nlm_testrply_u.holder.l_offset =
(unsigned int)holder->l_offset;
result.stat.nlm_testrply_u.holder.l_len =
(unsigned int)holder->l_len;
}
/*
* nlm_test has different result type to the other operations, so
* can't use transmit_result() in this case
*/
addr = svc_getcaller(rqstp->rq_xprt);
if ((cli = get_client(addr, NLM_VERS)) != NULL) {
/* No timeout - not expecting response */
timerclear(&timeo);
success = clnt_call(cli, NLM_TEST_RES, xdr_nlm_testres,
&result, xdr_void, &dummy, timeo);
if (debug_level > 2)
syslog(LOG_DEBUG, "clnt_call returns %d", success);
}
return NULL;
}
void *
nlm_granted_msg_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
{
static nlm_res res;
if (debug_level)
log_from_addr("nlm_granted_msg", rqstp);
res.cookie = arg->cookie;
res.stat.stat = lock_answer(arg->alock.svid, &arg->cookie,
nlm_granted, NULL, NLM_VERS) == 0 ?
nlm_granted : nlm_denied;
transmit_result(NLM_GRANTED_RES, &res, getrpcaddr(rqstp));
return (NULL);
}
/*
* Purpose: Release an existing lock
* Returns: Always granted, unless during grace period
* Notes: "no such lock" error condition is ignored, as the
* protocol uses unreliable UDP datagrams, and may well
* re-try an unlock that has already succeeded.
*/
nlm_res *
nlm_unlock_1_svc(nlm_unlockargs *arg, struct svc_req *rqstp)
{
static nlm_res result;
struct nlm4_lock arg4;
nlmtonlm4(&arg->alock, &arg4);
if (debug_level)
log_from_addr("nlm_unlock", rqstp);
result.stat.stat = unlock(&arg4, 0);
result.cookie = arg->cookie;
return &result;
}
void *
nlm_unlock_msg_1_svc(nlm_unlockargs *arg, struct svc_req *rqstp)
{
static nlm_res result;
struct nlm4_lock arg4;
nlmtonlm4(&arg->alock, &arg4);
if (debug_level)
log_from_addr("nlm_unlock_msg", rqstp);
result.stat.stat = unlock(&arg4, 0);
result.cookie = arg->cookie;
transmit_result(NLM_UNLOCK_RES, &result, svc_getcaller(rqstp->rq_xprt));
return NULL;
}
void *
nlm_unlock_msg_1_svc(nlm_unlockargs *arg, struct svc_req *rqstp)
{
static nlm_res res;
struct nlm4_lock arg4;
nlmtonlm4(&arg->alock, &arg4);
if (debug_level)
log_from_addr("nlm_unlock_msg", rqstp);
res.stat.stat = unlock(&arg4, 0);
res.cookie = arg->cookie;
transmit_result(NLM_UNLOCK_RES, &res, getrpcaddr(rqstp));
return (NULL);
}
/*
* Purpose: Receive notification that formerly blocked lock now granted
* Returns: always success ('granted')
* Notes:
*/
nlm_res *
nlm_granted_1_svc(nlm_testargs *arg, struct svc_req *rqstp)
{
static nlm_res res;
if (debug_level)
log_from_addr("nlm_granted", rqstp);
res.stat.stat = lock_answer(arg->alock.svid, &arg->cookie,
nlm_granted, NULL, NLM_VERS) == 0 ?
nlm_granted : nlm_denied;
/* copy cookie from arg to result. See comment in nlm_test_1() */
res.cookie = arg->cookie;
return (&res);
}
void *
nlm4_cancel_msg_4_svc(nlm4_cancargs *arg, struct svc_req *rqstp)
{
static nlm4_res result;
if (debug_level)
log_from_addr("nlm4_cancel_msg", rqstp);
result.cookie = arg->cookie;
/*
* Since at present we never return 'nlm_blocked', there can never be
* a lock to cancel, so this call always fails.
*/
result.stat.stat = unlock(&arg->alock, LOCK_CANCEL | LOCK_V4);
transmit4_result(NLM4_CANCEL_RES, &result, svc_getcaller(rqstp->rq_xprt));
return NULL;
}
/*
* Purpose: Cancel a blocked lock request
* Returns: granted or denied
* Notes:
*/
nlm4_res *
nlm4_cancel_4_svc(nlm4_cancargs *arg, struct svc_req *rqstp)
{
static nlm4_res result;
if (debug_level)
log_from_addr("nlm4_cancel", rqstp);
/* copy cookie from arg to result. See comment in nlm_test_1() */
result.cookie = arg->cookie;
/*
* Since at present we never return 'nlm_blocked', there can never be
* a lock to cancel, so this call always fails.
*/
result.stat.stat = unlock(&arg->alock, LOCK_CANCEL);
return &result;
}
void *
nlm_cancel_msg_1_svc(nlm_cancargs *arg, struct svc_req *rqstp)
{
static nlm_res res;
struct nlm4_lock arg4;
nlmtonlm4(&arg->alock, &arg4);
if (debug_level)
log_from_addr("nlm_cancel_msg", rqstp);
res.cookie = arg->cookie;
/*
* Since at present we never return 'nlm_blocked', there can never be
* a lock to cancel, so this call always fails.
*/
res.stat.stat = unlock(&arg4, LOCK_CANCEL);
transmit_result(NLM_CANCEL_RES, &res, getrpcaddr(rqstp));
return (NULL);
}
/*
* Purposes: Establish a lock
* Returns: granted, denied or blocked
* Notes: *** grace period support missing
*/
nlm_res *
nlm_lock_1_svc(nlm_lockargs *arg, struct svc_req *rqstp)
{
static nlm_res result;
struct nlm4_lockargs arg4;
nlmtonlm4(&arg->alock, &arg4.alock);
arg4.cookie = arg->cookie;
arg4.block = arg->block;
arg4.exclusive = arg->exclusive;
arg4.reclaim = arg->reclaim;
arg4.state = arg->state;
if (debug_level)
log_from_addr("nlm_lock", rqstp);
/* copy cookie from arg to result. See comment in nlm_test_1() */
result.cookie = arg->cookie;
result.stat.stat = getlock(&arg4, rqstp, LOCK_MON);
return &result;
}
void *
nlm_lock_msg_1_svc(nlm_lockargs *arg, struct svc_req *rqstp)
{
static nlm_res result;
struct nlm4_lockargs arg4;
nlmtonlm4(&arg->alock, &arg4.alock);
arg4.cookie = arg->cookie;
arg4.block = arg->block;
arg4.exclusive = arg->exclusive;
arg4.reclaim = arg->reclaim;
arg4.state = arg->state;
if (debug_level)
log_from_addr("nlm_lock_msg", rqstp);
result.cookie = arg->cookie;
result.stat.stat = getlock(&arg4, rqstp, LOCK_ASYNC | LOCK_MON);
transmit_result(NLM_LOCK_RES, &result, svc_getcaller(rqstp->rq_xprt));
return NULL;
}