@@ -332,7 +332,6 @@ void nfs_callback_down(int minorversion)
int
check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp)
{
- struct rpc_clnt *r = clp->cl_rpcclient;
char *p = svc_gss_principal(rqstp);
if (rqstp->rq_authop->flavour != RPC_AUTH_GSS)
@@ -353,7 +352,7 @@ check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp)
if (memcmp(p, "nfs@", 4) != 0)
return 0;
p += 4;
- if (strcmp(p, r->cl_server) != 0)
+ if (strcmp(p, clp->cl_hostname) != 0)
return 0;
return 1;
}
@@ -42,7 +42,6 @@ struct rpc_clnt {
cl_vers, /* RPC version number */
cl_maxproc; /* max procedure number */
- char * cl_server; /* server machine name */
char * cl_protname; /* protocol name */
struct rpc_auth * cl_auth; /* authenticator */
struct rpc_stat * cl_stats; /* per-program statistics */
@@ -116,7 +115,7 @@ struct rpc_create_args {
size_t addrsize;
struct sockaddr *saddress;
const struct rpc_timeout *timeout;
- char *servername;
+ const char *servername;
struct rpc_program *program;
u32 prognumber; /* overrides program->number */
u32 version;
@@ -225,6 +225,7 @@ struct rpc_xprt {
} stat;
struct net *xprt_net;
+ const char *servername;
const char *address_strings[RPC_DISPLAY_MAX];
};
@@ -254,6 +255,7 @@ struct xprt_create {
struct sockaddr * srcaddr; /* optional local address */
struct sockaddr * dstaddr; /* remote peer address */
size_t addrlen;
+ const char * servername;
struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
};
@@ -150,15 +150,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
struct rpc_clnt *clnt = NULL;
struct rpc_auth *auth;
int err;
- size_t len;
/* sanity check the name before trying to print it */
- err = -EINVAL;
- len = strlen(args->servername);
- if (len > RPC_MAXNETNAMELEN)
- goto out_no_rpciod;
- len++;
-
dprintk("RPC: creating %s client for %s (xprt %p)\n",
program->name, args->servername, xprt);
@@ -181,16 +174,6 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
goto out_err;
clnt->cl_parent = clnt;
- clnt->cl_server = clnt->cl_inline_name;
- if (len > sizeof(clnt->cl_inline_name)) {
- char *buf = kmalloc(len, GFP_KERNEL);
- if (buf != NULL)
- clnt->cl_server = buf;
- else
- len = sizeof(clnt->cl_inline_name);
- }
- strlcpy(clnt->cl_server, args->servername, len);
-
rcu_assign_pointer(clnt->cl_xprt, xprt);
clnt->cl_procinfo = version->procs;
clnt->cl_maxproc = version->nrprocs;
@@ -259,8 +242,6 @@ out_no_path:
out_no_principal:
rpc_free_iostats(clnt->cl_metrics);
out_no_stats:
- if (clnt->cl_server != clnt->cl_inline_name)
- kfree(clnt->cl_server);
kfree(clnt);
out_err:
xprt_put(xprt);
@@ -290,6 +271,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
.srcaddr = args->saddress,
.dstaddr = args->address,
.addrlen = args->addrsize,
+ .servername = args->servername,
.bc_xprt = args->bc_xprt,
};
char servername[48];
@@ -298,7 +280,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
* If the caller chooses not to specify a hostname, whip
* up a string representation of the passed-in address.
*/
- if (args->servername == NULL) {
+ if (xprtargs.servername == NULL) {
struct sockaddr_un *sun =
(struct sockaddr_un *)args->address;
struct sockaddr_in *sin =
@@ -325,7 +307,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
* address family isn't recognized. */
return ERR_PTR(-EINVAL);
}
- args->servername = servername;
+ xprtargs.servername = servername;
}
xprt = xprt_create_transport(&xprtargs);
@@ -467,8 +449,9 @@ EXPORT_SYMBOL_GPL(rpc_killall_tasks);
*/
void rpc_shutdown_client(struct rpc_clnt *clnt)
{
- dprintk("RPC: shutting down %s client for %s\n",
- clnt->cl_protname, clnt->cl_server);
+ dprintk_rcu("RPC: shutting down %s client for %s\n",
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
while (!list_empty(&clnt->cl_tasks)) {
rpc_killall_tasks(clnt);
@@ -486,8 +469,9 @@ EXPORT_SYMBOL_GPL(rpc_shutdown_client);
static void
rpc_free_client(struct rpc_clnt *clnt)
{
- dprintk("RPC: destroying %s client for %s\n",
- clnt->cl_protname, clnt->cl_server);
+ dprintk_rcu("RPC: destroying %s client for %s\n",
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
if (!IS_ERR(clnt->cl_path.dentry)) {
rpc_remove_client_dir(clnt->cl_path.dentry);
rpc_put_mount();
@@ -496,8 +480,6 @@ rpc_free_client(struct rpc_clnt *clnt)
rpc_release_client(clnt->cl_parent);
goto out_free;
}
- if (clnt->cl_server != clnt->cl_inline_name)
- kfree(clnt->cl_server);
out_free:
rpc_unregister_client(clnt);
rpc_free_iostats(clnt->cl_metrics);
@@ -1645,8 +1627,11 @@ call_timeout(struct rpc_task *task)
}
if (RPC_IS_SOFT(task)) {
if (clnt->cl_chatty)
+ rcu_read_lock();
printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
- clnt->cl_protname, clnt->cl_server);
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
+ rcu_read_unlock();
if (task->tk_flags & RPC_TASK_TIMEOUT)
rpc_exit(task, -ETIMEDOUT);
else
@@ -1656,9 +1641,13 @@ call_timeout(struct rpc_task *task)
if (!(task->tk_flags & RPC_CALL_MAJORSEEN)) {
task->tk_flags |= RPC_CALL_MAJORSEEN;
- if (clnt->cl_chatty)
+ if (clnt->cl_chatty) {
+ rcu_read_lock();
printk(KERN_NOTICE "%s: server %s not responding, still trying\n",
- clnt->cl_protname, clnt->cl_server);
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
+ rcu_read_unlock();
+ }
}
rpc_force_rebind(clnt);
/*
@@ -1688,9 +1677,13 @@ call_decode(struct rpc_task *task)
task->tk_pid, task->tk_status);
if (task->tk_flags & RPC_CALL_MAJORSEEN) {
- if (clnt->cl_chatty)
+ if (clnt->cl_chatty) {
+ rcu_read_lock();
printk(KERN_NOTICE "%s: server %s OK\n",
- clnt->cl_protname, clnt->cl_server);
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
+ rcu_read_unlock();
+ }
task->tk_flags &= ~RPC_CALL_MAJORSEEN;
}
@@ -1841,8 +1834,11 @@ rpc_verify_header(struct rpc_task *task)
task->tk_action = call_bind;
goto out_retry;
case RPC_AUTH_TOOWEAK:
+ rcu_read_lock();
printk(KERN_NOTICE "RPC: server %s requires stronger "
- "authentication.\n", task->tk_client->cl_server);
+ "authentication.\n",
+ rcu_dereference(task->tk_client->cl_xprt)->servername);
+ rcu_read_unlock();
break;
default:
dprintk("RPC: %5u %s: unknown auth error: %x\n",
@@ -1865,28 +1861,28 @@ rpc_verify_header(struct rpc_task *task)
case RPC_SUCCESS:
return p;
case RPC_PROG_UNAVAIL:
- dprintk("RPC: %5u %s: program %u is unsupported by server %s\n",
+ dprintk_rcu("RPC: %5u %s: program %u is unsupported by server %s\n",
task->tk_pid, __func__,
(unsigned int)task->tk_client->cl_prog,
- task->tk_client->cl_server);
+ rcu_dereference(task->tk_client->cl_xprt)->servername);
error = -EPFNOSUPPORT;
goto out_err;
case RPC_PROG_MISMATCH:
- dprintk("RPC: %5u %s: program %u, version %u unsupported by "
+ dprintk_rcu("RPC: %5u %s: program %u, version %u unsupported by "
"server %s\n", task->tk_pid, __func__,
(unsigned int)task->tk_client->cl_prog,
(unsigned int)task->tk_client->cl_vers,
- task->tk_client->cl_server);
+ rcu_dereference(task->tk_client->cl_xprt)->servername);
error = -EPROTONOSUPPORT;
goto out_err;
case RPC_PROC_UNAVAIL:
- dprintk("RPC: %5u %s: proc %s unsupported by program %u, "
+ dprintk_rcu("RPC: %5u %s: proc %s unsupported by program %u, "
"version %u on server %s\n",
task->tk_pid, __func__,
rpc_proc_name(task),
task->tk_client->cl_prog,
task->tk_client->cl_vers,
- task->tk_client->cl_server);
+ rcu_dereference(task->tk_client->cl_xprt)->servername);
error = -EOPNOTSUPP;
goto out_err;
case RPC_GARBAGE_ARGS:
@@ -361,7 +361,7 @@ rpc_show_info(struct seq_file *m, void *v)
struct rpc_clnt *clnt = m->private;
rcu_read_lock();
- seq_printf(m, "RPC server: %s\n", clnt->cl_server);
+ seq_printf(m, "RPC server: %s\n", rcu_dereference(clnt->cl_xprt)->servername);
seq_printf(m, "service: %s (%d) version %d\n", clnt->cl_protname,
clnt->cl_prog, clnt->cl_vers);
seq_printf(m, "address: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_ADDR));
@@ -291,8 +291,9 @@ out:
return result;
}
-static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
- size_t salen, int proto, u32 version)
+static struct rpc_clnt *rpcb_create(const char *hostname,
+ struct sockaddr *srvaddr, size_t salen,
+ int proto, u32 version)
{
struct rpc_create_args args = {
.net = &init_net,
@@ -614,7 +615,7 @@ void rpcb_getport_async(struct rpc_task *task)
dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
task->tk_pid, __func__,
- clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot);
+ xprt->servername, clnt->cl_prog, clnt->cl_vers, xprt->prot);
/* Put self on the wait queue to ensure we get notified if
* some other task is already attempting to bind the port */
@@ -665,7 +666,7 @@ void rpcb_getport_async(struct rpc_task *task)
dprintk("RPC: %5u %s: trying rpcbind version %u\n",
task->tk_pid, __func__, bind_version);
- rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
+ rpcb_clnt = rpcb_create(xprt->servername, sap, salen, xprt->prot,
bind_version);
if (IS_ERR(rpcb_clnt)) {
status = PTR_ERR(rpcb_clnt);
@@ -65,6 +65,7 @@
static void xprt_request_init(struct rpc_task *, struct rpc_xprt *);
static void xprt_connect_status(struct rpc_task *task);
static int __xprt_get_cong(struct rpc_xprt *, struct rpc_task *);
+static void xprt_destroy(struct rpc_xprt *xprt);
static DEFINE_SPINLOCK(xprt_list_lock);
static LIST_HEAD(xprt_list);
@@ -740,7 +741,7 @@ static void xprt_connect_status(struct rpc_task *task)
default:
dprintk("RPC: %5u xprt_connect_status: error %d connecting to "
"server %s\n", task->tk_pid, -task->tk_status,
- task->tk_client->cl_server);
+ xprt->servername);
xprt_release_write(xprt, task);
task->tk_status = -EIO;
}
@@ -1138,6 +1139,16 @@ found:
xprt_init_xid(xprt);
+ if (strlen(args->servername) > RPC_MAXNETNAMELEN) {
+ xprt_destroy(xprt);
+ return ERR_PTR(-EINVAL);
+ }
+ xprt->servername = kstrdup(args->servername, GFP_KERNEL);
+ if (xprt->servername == NULL) {
+ xprt_destroy(xprt);
+ return ERR_PTR(-ENOMEM);
+ }
+
dprintk("RPC: created transport %p with %u slots\n", xprt,
xprt->max_reqs);
return xprt;
@@ -1160,6 +1171,7 @@ static void xprt_destroy(struct rpc_xprt *xprt)
rpc_destroy_wait_queue(&xprt->resend);
rpc_destroy_wait_queue(&xprt->backlog);
cancel_work_sync(&xprt->task_cleanup);
+ kfree(xprt->servername);
/*
* Tear down transport state and free the rpc_xprt
*/