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Fix the krpc so that it can handle NFSv3,UDP mounts with a read/write

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data size greater than 8192. Since soreserve(so, 256*1024, 256*1024)
would always fail for the default value of sb_max, modify clnt_dg.c
so that it uses the calculated values and checks for an error return
from soreserve(). Also, add a check for error return from soreserve()
to clnt_vc.c and change __rpc_get_t_size() to use sb_max_adj instead of
the bogus maxsize == 256*1024.

PR:		kern/150910
Reviewed by:	jhb
MFC after:	2 weeks
This commit is contained in:
Rick Macklem 2010-10-13 00:57:14 +00:00
parent ac731af567
commit cec077bc8f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=213756
3 changed files with 20 additions and 7 deletions
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8
sys/rpc/clnt_dg.c
View File

@ -193,6 +193,7 @@ clnt_dg_create(
struct rpc_msg call_msg;
struct __rpc_sockinfo si;
XDR xdrs;
int error;
if (svcaddr == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
@ -267,7 +268,12 @@ clnt_dg_create(
*/
cu->cu_closeit = FALSE;
cu->cu_socket = so;
soreserve(so, 256*1024, 256*1024);
error = soreserve(so, (u_long)sendsz, (u_long)recvsz);
if (error != 0) {
rpc_createerr.cf_stat = RPC_FAILED;
rpc_createerr.cf_error.re_errno = error;
goto err2;
}
sb = &so->so_rcv;
SOCKBUF_LOCK(&so->so_rcv);

12
sys/rpc/clnt_vc.c
View File

@ -288,13 +288,19 @@ clnt_vc_create(
* Create a client handle which uses xdrrec for serialization
* and authnone for authentication.
*/
sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
error = soreserve(ct->ct_socket, sendsz, recvsz);
if (error != 0) {
if (ct->ct_closeit) {
soclose(ct->ct_socket);
}
goto err;
}
cl->cl_refs = 1;
cl->cl_ops = &clnt_vc_ops;
cl->cl_private = ct;
cl->cl_auth = authnone_create();
sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
soreserve(ct->ct_socket, sendsz, recvsz);
SOCKBUF_LOCK(&ct->ct_socket->so_rcv);
soupcall_set(ct->ct_socket, SO_RCV, clnt_vc_soupcall, ct);

7
sys/rpc/rpc_generic.c
View File

@ -63,6 +63,8 @@ __FBSDID("$FreeBSD$");
#include <rpc/rpc_com.h>
extern u_long sb_max_adj; /* not defined in socketvar.h */
#if __FreeBSD_version < 700000
#define strrchr rindex
#endif
@ -113,9 +115,8 @@ u_int
/*ARGSUSED*/
__rpc_get_t_size(int af, int proto, int size)
{
int maxsize, defsize;
int defsize;
maxsize = 256 * 1024; /* XXX */
switch (proto) {
case IPPROTO_TCP:
defsize = 64 * 1024; /* XXX */
@ -131,7 +132,7 @@ __rpc_get_t_size(int af, int proto, int size)
return defsize;
/* Check whether the value is within the upper max limit */
return (size > maxsize ? (u_int)maxsize : (u_int)size);
return (size > sb_max_adj ? (u_int)sb_max_adj : (u_int)size);
}
/*