static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
size_t salen, int proto, u32 version,
int privileged)
{
struct rpc_create_args args = {
.protocol = proto,
.address = srvaddr,
.addrsize = salen,
.servername = hostname,
.program = &rpcb_program,
.version = version,
.authflavor = RPC_AUTH_UNIX,
.flags = RPC_CLNT_CREATE_NOPING,
};
switch (srvaddr->sa_family) {
case AF_INET:
((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT);
break;
case AF_INET6:
((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT);
break;
default:
return NULL;
}
if (!privileged)
args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
return rpc_create(&args);
}
flux_rpc_t *flux_rpc_raw (flux_t *h,
const char *topic,
const void *data,
int len,
uint32_t nodeid,
int flags)
{
flux_rpc_t *rpc;
int rx_expected = 1;
if ((flags & FLUX_RPC_NORESPONSE))
rx_expected = 0;
if (!(rpc = rpc_create (h, rx_expected)))
goto error;
#if HAVE_CALIPER
cali_begin_string_byname ("flux.message.rpc", "single");
cali_begin_int_byname ("flux.message.response_expected",
!(flags & FLUX_RPC_NORESPONSE));
#endif
if (rpc_request_send_raw (rpc, topic, nodeid, data, len) < 0)
goto error;
#if HAVE_CALIPER
cali_end_byname ("flux.message.response_expected");
cali_end_byname ("flux.message.rpc");
#endif
return rpc;
error:
flux_rpc_destroy (rpc);
return NULL;
}
static flux_rpc_t *flux_vrpcf (flux_t *h, const char *topic, uint32_t nodeid,
int flags, const char *fmt, va_list ap)
{
flux_rpc_t *rpc;
int rx_expected = 1;
if ((flags & FLUX_RPC_NORESPONSE))
rx_expected = 0;
if (!(rpc = rpc_create (h, rx_expected)))
goto error;
#if HAVE_CALIPER
cali_begin_string_byname ("flux.message.rpc", "single");
cali_begin_int_byname ("flux.message.rpc.nodeid", nodeid);
cali_begin_int_byname ("flux.message.response_expected",
!(flags & FLUX_RPC_NORESPONSE));
#endif
if (rpc_request_vsendf (rpc, topic, nodeid, fmt, ap) < 0)
goto error;
#if HAVE_CALIPER
cali_end_byname ("flux.message.response_expected");
cali_end_byname ("flux.message.rpc.nodeid");
cali_end_byname ("flux.message.rpc");
#endif
return rpc;
error:
flux_rpc_destroy (rpc);
return NULL;
}
static int gssp_rpc_create(struct net *net, struct rpc_clnt **_clnt)
{
static const struct sockaddr_un gssp_localaddr = {
.sun_family = AF_LOCAL,
.sun_path = GSSPROXY_SOCK_PATHNAME,
};
struct rpc_create_args args = {
.net = net,
.protocol = XPRT_TRANSPORT_LOCAL,
.address = (struct sockaddr *)&gssp_localaddr,
.addrsize = sizeof(gssp_localaddr),
.servername = "localhost",
.program = &gssp_program,
.version = GSSPROXY_VERS_1,
.authflavor = RPC_AUTH_NULL,
/*
* Note we want connection to be done in the caller's
* filesystem namespace. We therefore turn off the idle
* timeout, which would result in reconnections being
* done without the correct namespace:
*/
.flags = RPC_CLNT_CREATE_NOPING |
RPC_CLNT_CREATE_NO_IDLE_TIMEOUT
};
struct rpc_clnt *clnt;
int result = 0;
clnt = rpc_create(&args);
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create AF_LOCAL gssproxy "
"client (errno %ld).\n", PTR_ERR(clnt));
result = -PTR_ERR(clnt);
*_clnt = NULL;
goto out;
}
dprintk("RPC: created new gssp local client (gssp_local_clnt: "
"%p)\n", clnt);
*_clnt = clnt;
out:
return result;
}
void init_gssp_clnt(struct sunrpc_net *sn)
{
mutex_init(&sn->gssp_lock);
sn->gssp_clnt = NULL;
init_waitqueue_head(&sn->gssp_wq);
}
flux_rpc_t *flux_rpc (flux_t h, const char *topic, const char *json_str,
uint32_t nodeid, int flags)
{
flux_rpc_t *rpc = rpc_create (h, flags, 1);
if (rpc_request_send (rpc, 0, topic, json_str, nodeid) < 0)
goto error;
if (!rpc->oneway)
rpc->nodemap[0] = nodeid;
return rpc;
error:
flux_rpc_destroy (rpc);
return NULL;
}
flux_rpc_t *flux_rpc_multi (flux_t h, const char *topic, const char *json_str,
const char *nodeset, int flags)
{
nodeset_t *ns = NULL;
nodeset_iterator_t *itr = NULL;
flux_rpc_t *rpc = NULL;
int i;
uint32_t count;
if (!topic || !nodeset) {
errno = EINVAL;
goto error;
}
if (!strcmp (nodeset, "all")) {
if (flux_get_size (h, &count) < 0)
goto error;
ns = nodeset_create_range (0, count - 1);
} else {
if ((ns = nodeset_create_string (nodeset)))
count = nodeset_count (ns);
}
if (!ns) {
errno = EINVAL;
goto error;
}
if (!(rpc = rpc_create (h, flags, count)))
goto error;
if (!(itr = nodeset_iterator_create (ns)))
goto error;
for (i = 0; i < count; i++) {
uint32_t nodeid = nodeset_next (itr);
assert (nodeid != NODESET_EOF);
if (rpc_request_send (rpc, i, topic, json_str, nodeid) < 0)
goto error;
if (!rpc->oneway)
rpc->nodemap[i] = nodeid;
}
nodeset_iterator_destroy (itr);
return rpc;
error:
if (rpc)
flux_rpc_destroy (rpc);
if (itr)
nodeset_iterator_destroy (itr);
if (ns)
nodeset_destroy (ns);
return NULL;
}
struct p2p *p2p_init(const char *rpc_srv, const char *stun_srv)
{
char ip[64];
struct skt_addr tmpaddr;
static stun_addr _mapped;
struct p2p *p2p = CALLOC(1, struct p2p);
if (!p2p) {
loge("malloc failed: %d\n", errno);
return NULL;
}
p2p->rpc = rpc_create(rpc_srv, _rpc_port);
if (!p2p->rpc) {
loge("rpc_create failed\n");
return NULL;
}
RPC_REGISTER_MSG_MAP(BASIC_RPC_API_RESP);
rpc_set_cb(p2p->rpc, on_rpc_read, on_rpc_write, on_rpc_error, p2p);
skt_getaddr_by_fd(p2p->rpc->fd, &tmpaddr);
skt_addr_ntop(_local_ip, tmpaddr.ip);
//_local_port = tmpaddr.port;
//logi("_local_port = %d\n", _local_port);
stun_init(stun_srv);
p2p->nat.type = stun_nat_type();
p2p->nat.uuid = p2p->rpc->send_pkt.header.uuid_src;
p2p->nat.local.ip = skt_addr_pton(_local_ip);
_local_port = random_port();
p2p->nat.local.port = _local_port;
p2p->nat.fd = stun_socket(_local_ip, _local_port, &_mapped);
_mapped.addr = ntohl(_mapped.addr);
skt_addr_ntop(ip, _mapped.addr);
p2p->nat.reflect.ip = _mapped.addr;
p2p->nat.reflect.port = _mapped.port;
logi("get nat info from local\n");
logi("nat.type = %d\n", p2p->nat.type);
logi("nat.local_addr %s:%d\n", _local_ip, p2p->nat.local.port);
logi("nat.reflect_addr %s:%d\n", ip, p2p->nat.reflect.port);
p2p->rpc_state = P2P_RPC_INIT;
_p2p = p2p;
return p2p;
}
static int do_probe_callback(void *data)
{
struct nfs4_client *clp = data;
struct sockaddr_in addr;
struct nfs4_callback *cb = &clp->cl_callback;
struct rpc_timeout timeparms = {
.to_initval = (NFSD_LEASE_TIME/4) * HZ,
.to_retries = 5,
.to_maxval = (NFSD_LEASE_TIME/2) * HZ,
.to_exponential = 1,
};
struct rpc_program * program = &cb->cb_program;
struct rpc_create_args args = {
.protocol = IPPROTO_TCP,
.address = (struct sockaddr *)&addr,
.addrsize = sizeof(addr),
.timeout = &timeparms,
.program = program,
.version = nfs_cb_version[1]->number,
.authflavor = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */
.flags = (RPC_CLNT_CREATE_NOPING),
};
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
};
struct rpc_clnt *client;
int status;
/* Initialize address */
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(cb->cb_port);
addr.sin_addr.s_addr = htonl(cb->cb_addr);
/* Initialize rpc_program */
program->name = "nfs4_cb";
program->number = cb->cb_prog;
program->nrvers = ARRAY_SIZE(nfs_cb_version);
program->version = nfs_cb_version;
program->stats = &cb->cb_stat;
/* Initialize rpc_stat */
memset(program->stats, 0, sizeof(cb->cb_stat));
program->stats->program = program;
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client\n");
status = PTR_ERR(client);
goto out_err;
}
status = rpc_call_sync(client, &msg, RPC_TASK_SOFT);
if (status)
goto out_release_client;
cb->cb_client = client;
atomic_set(&cb->cb_set, 1);
put_nfs4_client(clp);
return 0;
out_release_client:
rpc_shutdown_client(client);
out_err:
put_nfs4_client(clp);
dprintk("NFSD: warning: no callback path to client %.*s\n",
(int)clp->cl_name.len, clp->cl_name.data);
return status;
}
/*
* Set up the callback client and put a NFSPROC4_CB_NULL on the wire...
*/
void
nfsd4_probe_callback(struct nfs4_client *clp)
{
struct task_struct *t;
BUG_ON(atomic_read(&clp->cl_callback.cb_set));
/* the task holds a reference to the nfs4_client struct */
atomic_inc(&clp->cl_count);
t = kthread_run(do_probe_callback, clp, "nfs4_cb_probe");
if (IS_ERR(t))
atomic_dec(&clp->cl_count);
return;
}
/*
* called with dp->dl_count inc'ed.
* nfs4_lock_state() may or may not have been called.
*/
void
nfsd4_cb_recall(struct nfs4_delegation *dp)
{
struct nfs4_client *clp = dp->dl_client;
struct rpc_clnt *clnt = clp->cl_callback.cb_client;
struct nfs4_cb_recall *cbr = &dp->dl_recall;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
.rpc_argp = cbr,
};
int retries = 1;
int status = 0;
cbr->cbr_trunc = 0; /* XXX need to implement truncate optimization */
cbr->cbr_dp = dp;
status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
while (retries--) {
switch (status) {
case -EIO:
/* Network partition? */
atomic_set(&clp->cl_callback.cb_set, 0);
case -EBADHANDLE:
case -NFS4ERR_BAD_STATEID:
/* Race: client probably got cb_recall
* before open reply granting delegation */
break;
default:
goto out_put_cred;
}
ssleep(2);
status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
}
out_put_cred:
/*
* Success or failure, now we're either waiting for lease expiration
* or deleg_return.
*/
put_nfs4_client(clp);
nfs4_put_delegation(dp);
return;
}
int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
{
struct rpc_timeout timeparms = {
.to_initval = max_cb_time(),
.to_retries = 0,
};
struct rpc_create_args args = {
.net = &init_net,
.address = (struct sockaddr *) &conn->cb_addr,
.addrsize = conn->cb_addrlen,
.timeout = &timeparms,
.program = &cb_program,
.version = 0,
.authflavor = clp->cl_flavor,
.flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
};
struct rpc_clnt *client;
if (clp->cl_minorversion == 0) {
if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
return -EINVAL;
args.client_name = clp->cl_principal;
args.prognumber = conn->cb_prog,
args.protocol = XPRT_TRANSPORT_TCP;
clp->cl_cb_ident = conn->cb_ident;
} else {
args.bc_xprt = conn->cb_xprt;
args.prognumber = clp->cl_cb_session->se_cb_prog;
args.protocol = XPRT_TRANSPORT_BC_TCP;
}
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client: %ld\n",
PTR_ERR(client));
return PTR_ERR(client);
}
clp->cl_cb_client = client;
return 0;
}
static void warn_no_callback_path(struct nfs4_client *clp, int reason)
{
dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
(int)clp->cl_name.len, clp->cl_name.data, reason);
}
static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
{
struct nfs4_client *clp = container_of(calldata, struct nfs4_client, cl_cb_null);
if (task->tk_status)
warn_no_callback_path(clp, task->tk_status);
else
atomic_set(&clp->cl_cb_set, 1);
}
static const struct rpc_call_ops nfsd4_cb_probe_ops = {
/* XXX: release method to ensure we set the cb channel down if
* necessary on early failure? */
.rpc_call_done = nfsd4_cb_probe_done,
};
static struct rpc_cred *callback_cred;
int set_callback_cred(void)
{
if (callback_cred)
return 0;
callback_cred = rpc_lookup_machine_cred();
if (!callback_cred)
return -ENOMEM;
return 0;
}
static struct workqueue_struct *callback_wq;
static void do_probe_callback(struct nfs4_client *clp)
{
struct nfsd4_callback *cb = &clp->cl_cb_null;
cb->cb_op = NULL;
cb->cb_clp = clp;
cb->cb_msg.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL];
cb->cb_msg.rpc_argp = NULL;
cb->cb_msg.rpc_resp = NULL;
cb->cb_msg.rpc_cred = callback_cred;
cb->cb_ops = &nfsd4_cb_probe_ops;
queue_work(callback_wq, &cb->cb_work);
}
/*
* Poke the callback thread to process any updates to the callback
* parameters, and send a null probe.
*/
void nfsd4_probe_callback(struct nfs4_client *clp)
{
set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_cb_flags);
do_probe_callback(clp);
}
int setup_callback_client(struct nfs4_client *clp)
{
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_timeout timeparms = {
.to_initval = max_cb_time(),
.to_retries = 0,
};
struct rpc_create_args args = {
.protocol = XPRT_TRANSPORT_TCP,
.address = (struct sockaddr *) &cb->cb_addr,
.addrsize = cb->cb_addrlen,
.timeout = &timeparms,
.program = &cb_program,
.prognumber = cb->cb_prog,
.version = nfs_cb_version[1]->number,
.authflavor = clp->cl_flavor,
.flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
.client_name = clp->cl_principal,
};
struct rpc_clnt *client;
if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
return -EINVAL;
if (cb->cb_minorversion) {
args.bc_xprt = clp->cl_cb_xprt;
args.protocol = XPRT_TRANSPORT_BC_TCP;
}
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client: %ld\n",
PTR_ERR(client));
return PTR_ERR(client);
}
cb->cb_client = client;
return 0;
}
static void warn_no_callback_path(struct nfs4_client *clp, int reason)
{
dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
(int)clp->cl_name.len, clp->cl_name.data, reason);
}
static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
{
struct nfs4_client *clp = calldata;
if (task->tk_status)
warn_no_callback_path(clp, task->tk_status);
else
atomic_set(&clp->cl_cb_conn.cb_set, 1);
put_nfs4_client(clp);
}
static const struct rpc_call_ops nfsd4_cb_probe_ops = {
.rpc_call_done = nfsd4_cb_probe_done,
};
static struct rpc_cred *callback_cred;
int set_callback_cred(void)
{
callback_cred = rpc_lookup_machine_cred();
if (!callback_cred)
return -ENOMEM;
return 0;
}
int setup_callback_client(struct nfs4_client *clp)
{
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_timeout timeparms = {
.to_initval = max_cb_time(),
.to_retries = 0,
};
struct rpc_create_args args = {
.protocol = XPRT_TRANSPORT_TCP,
.address = (struct sockaddr *) &cb->cb_addr,
.addrsize = cb->cb_addrlen,
.timeout = &timeparms,
.program = &cb_program,
.prognumber = cb->cb_prog,
.version = nfs_cb_version[1]->number,
.authflavor = clp->cl_flavor,
.flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
.client_name = clp->cl_principal,
};
struct rpc_clnt *client;
if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
return -EINVAL;
if (cb->cb_minorversion) {
args.bc_xprt = clp->cl_cb_xprt;
args.protocol = XPRT_TRANSPORT_BC_TCP;
}
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client: %ld\n",
PTR_ERR(client));
return PTR_ERR(client);
}
cb->cb_client = client;
return 0;
}
static void warn_no_callback_path(struct nfs4_client *clp, int reason)
{
dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
(int)clp->cl_name.len, clp->cl_name.data, reason);
}
static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
{
struct nfs4_client *clp = calldata;
if (task->tk_status)
warn_no_callback_path(clp, task->tk_status);
else
atomic_set(&clp->cl_cb_conn.cb_set, 1);
put_nfs4_client(clp);
}
static const struct rpc_call_ops nfsd4_cb_probe_ops = {
.rpc_call_done = nfsd4_cb_probe_done,
};
static struct rpc_cred *callback_cred;
int set_callback_cred(void)
{
if (callback_cred)
return 0;
callback_cred = rpc_lookup_machine_cred();
if (!callback_cred)
return -ENOMEM;
return 0;
}
void do_probe_callback(struct nfs4_client *clp)
{
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
.rpc_cred = callback_cred
};
int status;
status = rpc_call_async(cb->cb_client, &msg,
RPC_TASK_SOFT | RPC_TASK_SOFTCONN,
&nfsd4_cb_probe_ops, (void *)clp);
if (status) {
warn_no_callback_path(clp, status);
put_nfs4_client(clp);
}
}
/*
* Set up the callback client and put a NFSPROC4_CB_NULL on the wire...
*/
void
nfsd4_probe_callback(struct nfs4_client *clp)
{
int status;
BUG_ON(atomic_read(&clp->cl_cb_conn.cb_set));
status = setup_callback_client(clp);
if (status) {
warn_no_callback_path(clp, status);
return;
}
/* the task holds a reference to the nfs4_client struct */
atomic_inc(&clp->cl_count);
do_probe_callback(clp);
}
flux_rpc_t *flux_rpc_multi (flux_t *h,
const char *topic,
const char *json_str,
const char *nodeset,
int flags)
{
nodeset_t *ns = NULL;
nodeset_iterator_t *itr = NULL;
flux_rpc_t *rpc = NULL;
int i;
uint32_t count;
int rx_expected;
if (!topic || !nodeset) {
errno = EINVAL;
goto error;
}
if (!strcmp (nodeset, "all")) {
if (flux_get_size (h, &count) < 0)
goto error;
ns = nodeset_create_range (0, count - 1);
} else {
if ((ns = nodeset_create_string (nodeset)))
count = nodeset_count (ns);
}
if (!ns) {
errno = EINVAL;
goto error;
}
rx_expected = count;
if ((flags & FLUX_RPC_NORESPONSE))
rx_expected = 0;
if (!(rpc = rpc_create (h, rx_expected)))
goto error;
if (!(itr = nodeset_iterator_create (ns)))
goto error;
#if HAVE_CALIPER
cali_begin_string_byname ("flux.message.rpc", "multi");
cali_begin_int_byname ("flux.message.response_expected",
!(flags & FLUX_RPC_NORESPONSE));
#endif
for (i = 0; i < count; i++) {
uint32_t nodeid = nodeset_next (itr);
assert (nodeid != NODESET_EOF);
#if HAVE_CALIPER
cali_begin_int_byname ("flux.message.rpc.nodeid", nodeid);
#endif
if (rpc_request_send (rpc, topic, nodeid, json_str) < 0)
goto error;
#if HAVE_CALIPER
cali_end_byname ("flux.message.rpc.nodeid");
#endif
}
#if HAVE_CALIPER
cali_end_byname ("flux.message.response_expected");
cali_end_byname ("flux.message.rpc");
#endif
nodeset_iterator_destroy (itr);
return rpc;
error:
if (rpc)
flux_rpc_destroy (rpc);
if (itr)
nodeset_iterator_destroy (itr);
if (ns)
nodeset_destroy (ns);
return NULL;
}
int setup_callback_client(struct nfs4_client *clp)
{
struct sockaddr_in addr;
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_timeout timeparms = {
.to_initval = max_cb_time(),
.to_retries = 0,
};
struct rpc_create_args args = {
.protocol = IPPROTO_TCP,
.address = (struct sockaddr *)&addr,
.addrsize = sizeof(addr),
.timeout = &timeparms,
.program = &cb_program,
.prognumber = cb->cb_prog,
.version = nfs_cb_version[1]->number,
.authflavor = clp->cl_flavor,
.flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
.client_name = clp->cl_principal,
};
struct rpc_clnt *client;
if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
return -EINVAL;
/* Initialize address */
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(cb->cb_port);
addr.sin_addr.s_addr = htonl(cb->cb_addr);
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client: %ld\n",
PTR_ERR(client));
return PTR_ERR(client);
}
cb->cb_client = client;
return 0;
}
static void warn_no_callback_path(struct nfs4_client *clp, int reason)
{
dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
(int)clp->cl_name.len, clp->cl_name.data, reason);
}
static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
{
struct nfs4_client *clp = calldata;
if (task->tk_status)
warn_no_callback_path(clp, task->tk_status);
else
atomic_set(&clp->cl_cb_conn.cb_set, 1);
put_nfs4_client(clp);
}
static const struct rpc_call_ops nfsd4_cb_probe_ops = {
.rpc_call_done = nfsd4_cb_probe_done,
};
static struct rpc_cred *lookup_cb_cred(struct nfs4_cb_conn *cb)
{
struct auth_cred acred = {
.machine_cred = 1
};
/*
* Note in the gss case this doesn't actually have to wait for a
* gss upcall (or any calls to the client); this just creates a
* non-uptodate cred which the rpc state machine will fill in with
* a refresh_upcall later.
*/
return rpcauth_lookup_credcache(cb->cb_client->cl_auth, &acred,
RPCAUTH_LOOKUP_NEW);
}
void do_probe_callback(struct nfs4_client *clp)
{
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
};
struct rpc_cred *cred;
int status;
cred = lookup_cb_cred(cb);
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
cb->cb_cred = cred;
msg.rpc_cred = cb->cb_cred;
status = rpc_call_async(cb->cb_client, &msg, RPC_TASK_SOFT,
&nfsd4_cb_probe_ops, (void *)clp);
out:
if (status) {
warn_no_callback_path(clp, status);
put_nfs4_client(clp);
}
}
/*
* Set up the callback client and put a NFSPROC4_CB_NULL on the wire...
*/
void
nfsd4_probe_callback(struct nfs4_client *clp)
{
int status;
BUG_ON(atomic_read(&clp->cl_cb_conn.cb_set));
status = setup_callback_client(clp);
if (status) {
warn_no_callback_path(clp, status);
return;
}
/* the task holds a reference to the nfs4_client struct */
atomic_inc(&clp->cl_count);
do_probe_callback(clp);
}
static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
{
struct nfs4_delegation *dp = calldata;
struct nfs4_client *clp = dp->dl_client;
switch (task->tk_status) {
case -EIO:
/* Network partition? */
atomic_set(&clp->cl_cb_conn.cb_set, 0);
warn_no_callback_path(clp, task->tk_status);
case -EBADHANDLE:
case -NFS4ERR_BAD_STATEID:
/* Race: client probably got cb_recall
* before open reply granting delegation */
break;
default:
/* success, or error we can't handle */
return;
}
if (dp->dl_retries--) {
rpc_delay(task, 2*HZ);
task->tk_status = 0;
rpc_restart_call(task);
} else {
atomic_set(&clp->cl_cb_conn.cb_set, 0);
warn_no_callback_path(clp, task->tk_status);
}
}
static void nfsd4_cb_recall_release(void *calldata)
{
struct nfs4_delegation *dp = calldata;
struct nfs4_client *clp = dp->dl_client;
nfs4_put_delegation(dp);
put_nfs4_client(clp);
}
static const struct rpc_call_ops nfsd4_cb_recall_ops = {
.rpc_call_done = nfsd4_cb_recall_done,
.rpc_release = nfsd4_cb_recall_release,
};
/*
* called with dp->dl_count inc'ed.
*/
void
nfsd4_cb_recall(struct nfs4_delegation *dp)
{
struct nfs4_client *clp = dp->dl_client;
struct rpc_clnt *clnt = clp->cl_cb_conn.cb_client;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
.rpc_argp = dp,
.rpc_cred = clp->cl_cb_conn.cb_cred
};
int status;
dp->dl_retries = 1;
status = rpc_call_async(clnt, &msg, RPC_TASK_SOFT,
&nfsd4_cb_recall_ops, dp);
if (status) {
put_nfs4_client(clp);
nfs4_put_delegation(dp);
}
}
static int vsnfs_create_rpcclient(struct vsnfs_server *server)
{
struct rpc_clnt *clnt = NULL;
struct vsnfs_fh *resp = NULL;
struct vsnfs_getrootargs argp = {
.path = server->mnt_path,
.len = strlen(server->mnt_path),
};
int ret = VSNFS_OK;
struct rpc_create_args args = {
.protocol = IPPROTO_TCP,
.address = (struct sockaddr *)&server->cl_addr,
.addrsize = server->cl_addrlen,
.servername = server->ip_addr,
.program = &vsnfs_program,
.version = server->cl_rpc_ops->version,
.authflavor = RPC_AUTH_NULL,
.flags = RPC_CLNT_CREATE_NOPING, /* check the flags options */
};
printk(KERN_ERR "inside vsnfs_Create_rpcClient\n");
printk(KERN_ERR "calling rpc_create\n");
clnt = rpc_create(&args);
if (IS_ERR(clnt)) {
printk(KERN_ERR "%s: cannot create RPC client = %ld\n",
__func__, PTR_ERR(clnt));
ret = PTR_ERR(clnt);
goto out_rpcclient;
}
printk(KERN_ERR "RPC client created\n");
server->cl_rpcclient = clnt;
/* TO DO: getting root handle should be moved outside of this function */
resp = kmalloc(sizeof(struct vsnfs_fh), GFP_KERNEL);
if (!resp) {
ret = -ENOMEM;
goto out_rpcclient;
}
ret = server->cl_rpc_ops->getroot(server, &argp, resp);
if (ret == 0) {
vsnfs_trace(KERN_DEFAULT, "success :-) inode : %s type: %d\n",
resp->data, resp->type);
} else {
vsnfs_trace(KERN_DEFAULT, "failure :-( %d\n", ret);
ret = -VSNFSERR_REMOTE;
goto out_rpcclient;
}
memcpy(&server->root_fh, resp, sizeof(struct vsnfs_fh));
vsnfs_trace(KERN_DEFAULT, "success :-) inode : %s\n",
server->root_fh.data);
out_rpcclient:
kfree(resp);
return ret;
}
/* 2. Filesystem registration and superblock operations */
static int vsnfs_get_sb(struct file_system_type *, int, const char *,
void *, struct vfsmount *);
static void vsnfs_kill_sb(struct super_block *);
/**
* vsnfs_umount_begin: - Used to unmount the filesystem
*/
static void vsnfs_umount_begin(struct super_block *sb)
{
struct vsnfs_server *server = VSNFS_SB(sb);
struct rpc_clnt *rpc;
if ((rpc = server->cl_rpcclient) != NULL)
rpc_killall_tasks(rpc);
}
int vsnfs_write_inode(struct inode *inode, int sync)
{
printk("Inside wrrite inode\n");
return -EOPNOTSUPP;
}
void vsnfs_clear_inode(struct inode *inode)
{
printk("Inside clear inode\n");
}
/*
* Create NSM client for the local host
*/
static struct rpc_clnt *
nsm_create(void)
{
struct sockaddr_in sin = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(INADDR_LOOPBACK),
.sin_port = 0,
};
struct rpc_create_args args = {
.protocol = IPPROTO_UDP,
.address = (struct sockaddr *)&sin,
.addrsize = sizeof(sin),
.servername = "localhost",
.program = &nsm_program,
.version = SM_VERSION,
.authflavor = RPC_AUTH_NULL,
.flags = (RPC_CLNT_CREATE_ONESHOT),
};
return rpc_create(&args);
}
/*
* XDR functions for NSM.
*/
static __be32 *
xdr_encode_common(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
{
char buffer[20], *name;
/*
* Use the dotted-quad IP address of the remote host as
* identifier. Linux statd always looks up the canonical
* hostname first for whatever remote hostname it receives,
* so this works alright.
*/
if (nsm_use_hostnames) {
name = argp->mon_name;
} else {
sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(argp->addr));
name = buffer;
}
if (!(p = xdr_encode_string(p, name))
|| !(p = xdr_encode_string(p, utsname()->nodename)))
return ERR_PTR(-EIO);
*p++ = htonl(argp->prog);
*p++ = htonl(argp->vers);
*p++ = htonl(argp->proc);
return p;
}
static int
xdr_encode_mon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
{
p = xdr_encode_common(rqstp, p, argp);
if (IS_ERR(p))
return PTR_ERR(p);
/* Surprise - there may even be room for an IPv6 address now */
*p++ = argp->addr;
*p++ = 0;
*p++ = 0;
*p++ = 0;
rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
return 0;
}