update from main archive 961201 cvs/libc-961202

Mon Dec  2 03:59:38 1996  Ulrich Drepper  <drepper@cygnus.com>

	* grp/initgroups.c: Update and reformat copyright.
	Use __getgrent_r instead of getgrent.

	* inet/rcmd.c: Update and reformat copyright.
	Use __gethostbyname_r instead of gethostbyname.
	* inet/rexec.c: Likewise.

	* intl/finddomain.c: Correct comment about CEN sponsor and revision.
	* locale/findlocale.c: Likewise.
	* intl/l10nflist.c: Correct handling of CEN sponsor and revision.
	* locale/Makefile (CPPFLAGS): Add definition of LOCALEDIR.
	* locale/setlocale.c (setlocale): Correctly split value of
	LOCALE_PATH.
	* locale/programs/localedef.c: Use LOCALEDIR not LOCALE_PATH to
	find output directory.

	* nss/getXXbyYY.c [NEED_H_ERRNO]: Before enlarging buffer test
	h_errno_tmp variable.
	Save error value from being changed during `free' call.
	* nss/getXXent.c: Likewise.

	* nss/nss_files/files-XXX.c: Set h_errno variable to NETDB_INTERNAL
	before returning ERANGE error.

	* posix/glob.c: Use getlogin_r and getpwnam_r function when available
	or in GNU libc.

	* pwd/getpw.c: Use getpwuid_r instead of getpwuid.

	* sunrpc/clnt_gen.c: Use gethostbyname_r and getprotobyname_r.
	* sunrpc/clnt_simp.c: Likewise.
	* sunrpc/getrpcport.c: Likewise.
	* sysdeps/unix/sysv/linux/gethostid.c: Likewise.

	* posix/getconf.c: Treat _SC_UNIT_MAX and _SC_ULONG_MAX separately
	since the value might be outsode the range of the `long int'.
	Print string `undefined' when a value is undefined.

	* stdlib/l64a.c: Return correct pointer.
	Patch by NIIBE Yutaka <gniibe@mri.co.jp>.

	* string/Makefile (routines): Add argz-addsep.
	* string/argz-addsep.c: New file.
	* string/argz.h: Add prototypes for argz_add_sep.

	* string/argz-ctsep.c: Prevent memory leak.

	* string/strcoll.c: Correct typo in comment.

Sat Nov 30 02:53:59 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/sys/serial.h: Removed again.  The file is
	not general enough to be part of the libc.
	* sysdeps/unix/sysv/linux/Dist: Remove sys/serial.h.
	* sysdeps/unix/sysv/linux/Makefile: Don't install sys/serial.h.

Thu Nov 28 20:04:41 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* login/Makefile: Fix typo.

	* nss/Makefile (generated): Filter out db-alias.c.

Thu Nov 28 14:44:01 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* time/Makefile (echo-zonenames): Don't depend on non-existing
	target `zonenames'.

Thu Nov 28 12:34:05 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* link.h: New file.
	* nss/nsswitch.c: Use it.

	* printf.h: Fix file name.
	* stdlib/strfmon.c: Use it.

3 files changed, 96 insertions, 31 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);
diff --git a/sunrpc/clnt_simp.c b/sunrpc/clnt_simp.c
index e289b3400d..dd2ae75f1e 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);
diff --git a/sunrpc/getrpcport.c b/sunrpc/getrpcport.c
index 9b13bac6b0..3e94dbbf7b 100644
--- a/sunrpc/getrpcport.c
+++ b/sunrpc/getrpcport.c
@@ -9,23 +9,23 @@ static  char sccsid[] = "@(#)getrpcport.c 1.3 87/08/11 SMI";
  * 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.
- * 
+ *
  * 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
@@ -35,19 +35,36 @@ static  char sccsid[] = "@(#)getrpcport.c 1.3 87/08/11 SMI";
  * Copyright (c) 1985 by Sun Microsystems, Inc.
  */
 
+#include <alloca.h>
+#include <errno.h>
 #include <stdio.h>
 #include <rpc/rpc.h>
 #include <netdb.h>
 #include <sys/socket.h>
 
+int
 getrpcport(host, prognum, versnum, proto)
 	char *host;
 {
 	struct sockaddr_in addr;
-	struct hostent *hp;
+	struct hostent hostbuf, *hp;
+	size_t buflen;
+	char *buffer;
+	int herr;
+
+	buflen = 1024;
+	buffer = __alloca (buflen);
+	while (__gethostbyname_r (host, &hostbuf, buffer, buflen, &hp, &herr)
+	       < 0)
+	  if (herr != NETDB_INTERNAL || errno != ERANGE)
+	    return 0;
+	  else
+	    {
+	      /* Enlarge the buffer.  */
+	      buflen *= 2;
+	      buffer = __alloca (buflen);
+	    }
 
-	if ((hp = gethostbyname(host)) == NULL)
-		return (0);
 	bcopy(hp->h_addr, (char *) &addr.sin_addr, hp->h_length);
 	addr.sin_family = AF_INET;
 	addr.sin_port =  0;