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SUNRPC: Split another new rpcbind retry error code from EACCES 

Add more new error code processing to the kernel's rpcbind client
and to call_bind_status() to distinguish two cases:

Case 1: the remote has replied that the program/version tuple is not
registered (returns EACCES)

Case 2: retry with a lesser rpcbind version (rpcb now returns EPFNOSUPPORT)

This change allows more specific error processing for each of these two
cases.  We now fail case 2 instead of retrying... it's a server
configuration error not to support even rpcbind version 2.  And don't
expose this new error code to user land -- convert it to EIO before
failing the RPC.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2007-09-11 18:00:47 -04:00 committed by Trond Myklebust
parent 2429cbf6a1
commit 906462af4c
2 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/sunrpc/clnt.c
View File

@ -940,7 +940,7 @@ call_bind(struct rpc_task *task)
static void
call_bind_status(struct rpc_task *task)
{
int status = -EACCES;
int status = -EIO;
if (task->tk_status >= 0) {
dprint_status(task);
@ -966,6 +966,7 @@ call_bind_status(struct rpc_task *task)
task->tk_pid);
goto retry_timeout;
case -EPFNOSUPPORT:
/* server doesn't support any rpcbind version we know of */
dprintk("RPC: %5u remote rpcbind service unavailable\n",
task->tk_pid);
break;
@ -978,7 +979,6 @@ call_bind_status(struct rpc_task *task)
default:
dprintk("RPC: %5u unrecognized rpcbind error (%d)\n",
task->tk_pid, -task->tk_status);
status = -EIO;
}
rpc_exit(task, status);

2
net/sunrpc/rpcb_clnt.c
View File

@ -377,7 +377,7 @@ void rpcb_getport_async(struct rpc_task *task)
}
if (info[xprt->bind_index].rpc_proc == NULL) {
xprt->bind_index = 0;
status = -EACCES; /* tell caller to try again later */
status = -EPFNOSUPPORT;
dprintk("RPC: %5u %s: no more getport versions available\n",
task->tk_pid, __FUNCTION__);
goto bailout_nofree;