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Patch from PR 15181 to try using TCP first, fixing problems with long 

responses.
This commit is contained in:
mycroft 2004-08-06 16:10:54 +00:00
parent 0428b497d9
commit de443fd960
1 changed files with 73 additions and 4 deletions
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77
usr.bin/showmount/showmount.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: showmount.c,v 1.12 2003/08/07 11:15:51 agc Exp $ */
/* $NetBSD: showmount.c,v 1.13 2004/08/06 16:10:54 mycroft Exp $ */
/*
* Copyright (c) 1989, 1993, 1995
@ -42,7 +42,7 @@ __COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1995\n\
#if 0
static char sccsid[] = "@(#)showmount.c 8.3 (Berkeley) 3/29/95";
#endif
__RCSID("$NetBSD: showmount.c,v 1.12 2003/08/07 11:15:51 agc Exp $");
__RCSID("$NetBSD: showmount.c,v 1.13 2004/08/06 16:10:54 mycroft Exp $");
#endif /* not lint */
#include <sys/types.h>
@ -94,6 +94,10 @@ void print_dump __P((struct mountlist *));
void usage __P((void));
int xdr_mntdump __P((XDR *, struct mountlist **));
int xdr_exports __P((XDR *, struct exportslist **));
int tcp_callrpc __P((char *host,
int prognum, int versnum, int procnum,
xdrproc_t inproc, char *in,
xdrproc_t outproc, char *out));
/*
* This command queries the NFS mount daemon for it's mount list and/or
@ -152,7 +156,7 @@ main(argc, argv)
rpcs = DODUMP;
if (rpcs & DODUMP)
if ((estat = callrpc(host, RPCPROG_MNT, mntvers,
if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
RPCMNT_DUMP, xdr_void, (char *)0,
xdr_mntdump, (char *)&mntdump)) != 0) {
fprintf(stderr, "showmount: Can't do Mountdump rpc: ");
@ -160,7 +164,7 @@ main(argc, argv)
exit(1);
}
if (rpcs & DOEXPORTS)
if ((estat = callrpc(host, RPCPROG_MNT, mntvers,
if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
RPCMNT_EXPORT, xdr_void, (char *)0,
xdr_exports, (char *)&exports)) != 0) {
fprintf(stderr, "showmount: Can't do Exports rpc: ");
@ -207,6 +211,71 @@ main(argc, argv)
exit(0);
}
/*
* tcp_callrpc has the same interface as callrpc, but tries to
* use tcp as transport method in order to handle large replies.
*/
int
tcp_callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
char *host;
int prognum;
int versnum;
int procnum;
xdrproc_t inproc;
char *in;
xdrproc_t outproc;
char *out;
{
struct hostent *hp;
struct sockaddr_in server_addr;
CLIENT *client;
int sock;
struct timeval timeout;
int rval;
hp = gethostbyname(host);
if (!hp)
return ((int) RPC_UNKNOWNHOST);
memset(&server_addr,0,sizeof(server_addr));
memcpy((char *) &server_addr.sin_addr,
hp->h_addr,
hp->h_length);
server_addr.sin_len = sizeof(struct sockaddr_in);
server_addr.sin_family =AF_INET;
server_addr.sin_port = 0;
sock = RPC_ANYSOCK;
client = clnttcp_create(&server_addr,
(u_long) prognum,
(u_long) versnum, &sock, 0, 0);
if (!client) {
timeout.tv_sec = 5;
timeout.tv_usec = 0;
server_addr.sin_port = 0;
sock = RPC_ANYSOCK;
client = clntudp_create(&server_addr,
(u_long) prognum,
(u_long) versnum,
timeout,
&sock);
}
if (!client)
return ((int) rpc_createerr.cf_stat);
timeout.tv_sec = 25;
timeout.tv_usec = 0;
rval = (int) clnt_call(client, procnum,
inproc, in,
outproc, out,
timeout);
clnt_destroy(client);
return rval;
}
/*
* Xdr routine for retrieving the mount dump list
*/