diff options
Diffstat (limited to 'sunrpc/clnt_simp.c')
| -rw-r--r-- | sunrpc/clnt_simp.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/sunrpc/clnt_simp.c b/sunrpc/clnt_simp.c index e289b34..dd2ae75 100644 --- a/sunrpc/clnt_simp.c +++ b/sunrpc/clnt_simp.c @@ -38,6 +38,8 @@ static char sccsid[] = "@(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro"; * Copyright (C) 1984, Sun Microsystems, Inc. */ +#include <alloca.h> +#include <errno.h> #include <stdio.h> #include <rpc/rpc.h> #include <sys/socket.h> @@ -59,7 +61,7 @@ callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) register struct callrpc_private *crp = callrpc_private; struct sockaddr_in server_addr; enum clnt_stat clnt_stat; - struct hostent *hp; + struct hostent hostbuf, *hp; struct timeval timeout, tottimeout; if (crp == 0) { @@ -77,6 +79,10 @@ callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) && strcmp(crp->oldhost, host) == 0) { /* reuse old client */ } else { + size_t buflen; + char *buffer; + int herr; + crp->valid = 0; if (crp->socket != RPC_ANYSOCK) { @@ -87,8 +93,20 @@ callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) clnt_destroy(crp->client); crp->client = NULL; } - if ((hp = gethostbyname(host)) == NULL) - return ((int) RPC_UNKNOWNHOST); + + buflen = 1024; + buffer = __alloca (buflen); + while (__gethostbyname_r (host, &hostbuf, buffer, buflen, + &hp, &herr) < 0) + if (herr != NETDB_INTERNAL || errno != ERANGE) + return (int) RPC_UNKNOWNHOST; + else + { + /* Enlarge the buffer. */ + buflen *= 2; + buffer = __alloca (buflen); + } + timeout.tv_usec = 0; timeout.tv_sec = 5; bcopy(hp->h_addr, (char *)&server_addr.sin_addr, hp->h_length); |