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-rw-r--r--sunrpc/clnt_gen.c70
1 files changed, 50 insertions, 20 deletions
diff --git a/sunrpc/clnt_gen.c b/sunrpc/clnt_gen.c
index e54e77828b..d7b949caa6 100644
--- a/sunrpc/clnt_gen.c
+++ b/sunrpc/clnt_gen.c
@@ -6,11 +6,11 @@
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
- *
+ *
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
+ *
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
@@ -18,11 +18,11 @@
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
- *
+ *
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
- *
+ *
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
@@ -33,6 +33,8 @@ static char sccsid[] = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI";
/*
* Copyright (C) 1987, Sun Microsystems, Inc.
*/
+#include <alloca.h>
+#include <errno.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <sys/errno.h>
@@ -40,7 +42,7 @@ static char sccsid[] = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI";
/*
* Generic client creation: takes (hostname, program-number, protocol) and
- * returns client handle. Default options are set, which the user can
+ * returns client handle. Default options are set, which the user can
* change using the rpc equivalent of ioctl()'s.
*/
CLIENT *
@@ -50,36 +52,64 @@ clnt_create(hostname, prog, vers, proto)
unsigned vers;
char *proto;
{
- struct hostent *h;
- struct protoent *p;
+ struct hostent hostbuf, *h;
+ size_t hstbuflen;
+ char *hsttmpbuf;
+ struct protoent protobuf, *p;
+ size_t prtbuflen;
+ char *prttmpbuf;
struct sockaddr_in sin;
int sock;
struct timeval tv;
CLIENT *client;
+ int herr;
+
+ hstbuflen = 1024;
+ hsttmpbuf = __alloca (hstbuflen);
+ while (__gethostbyname_r (hostname, &hostbuf, hsttmpbuf, hstbuflen,
+ &h, &herr) < 0)
+ if (herr != NETDB_INTERNAL || errno != ERANGE)
+ {
+ rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
+ return NULL;
+ }
+ else
+ {
+ /* Enlarge the buffer. */
+ hstbuflen *= 2;
+ hsttmpbuf = __alloca (hstbuflen);
+ }
- h = gethostbyname(hostname);
- if (h == NULL) {
- rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
- return (NULL);
- }
if (h->h_addrtype != AF_INET) {
/*
* Only support INET for now
*/
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = EAFNOSUPPORT;
+ rpc_createerr.cf_error.re_errno = EAFNOSUPPORT;
return (NULL);
}
sin.sin_family = h->h_addrtype;
sin.sin_port = 0;
bzero(sin.sin_zero, sizeof(sin.sin_zero));
bcopy(h->h_addr, (char*)&sin.sin_addr, h->h_length);
- p = getprotobyname(proto);
- if (p == NULL) {
- rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
- rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
- return (NULL);
- }
+
+ prtbuflen = 1024;
+ prttmpbuf = __alloca (prtbuflen);
+ while (__getprotobyname_r (proto, &protobuf, prttmpbuf, prtbuflen, &p)
+ < 0)
+ if (errno != ERANGE)
+ {
+ rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
+ rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
+ return NULL;
+ }
+ else
+ {
+ /* Enlarge the buffer. */
+ prtbuflen *= 2;
+ prttmpbuf = __alloca (prtbuflen);
+ }
+
sock = RPC_ANYSOCK;
switch (p->p_proto) {
case IPPROTO_UDP:
@@ -103,7 +133,7 @@ clnt_create(hostname, prog, vers, proto)
break;
default:
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
+ rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
return (NULL);
}
return (client);