From 1e2ddd4ebd7a9266e6070f275fa35752752fdfd6 Mon Sep 17 00:00:00 2001 From: Steve Dickson Date: Tue, 30 May 2017 11:29:58 -0400 Subject: [PATCH 6/6] rpcbproc_callit_com: No need to allocate output buffer Now that sendz is a fixed size (UDPMSGSIZE) which is small then RPC_BUF_MAX, no need to check the sendz size. Signed-off-by: Steve Dickson --- src/rpcb_svc_com.c | 33 +++++---------------------------- 1 file changed, 5 insertions(+), 28 deletions(-) diff --git a/src/rpcb_svc_com.c b/src/rpcb_svc_com.c index 1fc2229..d36b090 100644 --- a/src/rpcb_svc_com.c +++ b/src/rpcb_svc_com.c @@ -612,8 +612,6 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp, struct netconfig *nconf; struct netbuf *caller; struct r_rmtcall_args a; - char *outbufp; - char *outbuf_alloc = NULL; char outbuf[RPC_BUF_MAX]; struct netbuf *na = (struct netbuf *) NULL; struct rpc_msg call_msg; @@ -674,7 +672,6 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp, rpcbs_rmtcall(versnum - 2, reply_type, a.rmt_prog, a.rmt_vers, a.rmt_proc, transp->xp_netid, rbl); - if (rbl == (rpcblist_ptr)NULL) { #ifdef RPCBIND_DEBUG if (debugging) @@ -793,24 +790,10 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp, call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; call_msg.rm_call.cb_prog = a.rmt_prog; call_msg.rm_call.cb_vers = a.rmt_vers; - if (sendsz > RPC_BUF_MAX) { -#ifdef notyet - outbuf_alloc = alloca(sendsz); /* not in IDR2? */ -#else - outbuf_alloc = malloc(sendsz); -#endif /* notyet */ - if (outbuf_alloc == NULL) { - if (reply_type == RPCBPROC_INDIRECT) - svcerr_systemerr(transp); - if (debugging) - xlog(LOG_DEBUG, - "rpcbproc_callit_com: No memory!\n"); - goto error; - } - xdrmem_create(&outxdr, outbuf_alloc, sendsz, XDR_ENCODE); - } else { - xdrmem_create(&outxdr, outbuf, sendsz, XDR_ENCODE); - } + + memset(outbuf, '\0', sendsz); /* Zero out the output buffer */ + xdrmem_create(&outxdr, outbuf, sendsz, XDR_ENCODE); + if (!xdr_callhdr(&outxdr, &call_msg)) { if (reply_type == RPCBPROC_INDIRECT) svcerr_systemerr(transp); @@ -875,10 +858,6 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp, goto error; } outlen = (int) XDR_GETPOS(&outxdr); - if (outbuf_alloc) - outbufp = outbuf_alloc; - else - outbufp = outbuf; na = uaddr2taddr(nconf, local_uaddr); if (!na) { @@ -887,7 +866,7 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp, goto error; } - if (sendto(fd, outbufp, outlen, 0, (struct sockaddr *)na->buf, na->len) + if (sendto(fd, outbuf, outlen, 0, (struct sockaddr *)na->buf, na->len) != outlen) { if (debugging) xlog(LOG_DEBUG, @@ -912,8 +891,6 @@ out: } if (local_uaddr) free(local_uaddr); - if (outbuf_alloc) - free(outbuf_alloc); if (na) { free(na->buf); free(na); -- 2.13.2