Fri Jun 28 02:41:08 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> cvs/libc-960628

	* nss/Makefile (databases): New variable.
	(routines, libnss_files-routines): Use it.
	(subdir-dirs): Compute from $(services).

	* sysdeps/unix/sysv/linux/syscalls.list (create_module, delete_module,
	init_module, klogctl): Use EXTRA in the "caller" column so these get
	added to unix-extra-syscalls and thus compiled in misc.

	* string/Makefile (routines): Add strndup.
	* string/strndup.c: New file.
	* string/string.h: Declare strndup.
	(strndupa): New macro.

	* string/string.h: Declare __strdup.
	* string/strdup.c: Deansideclized.  Define __ name and weak alias.

	* string/string.h: Don't define memccpy as macro for [__OPTIMIZE__].

Thu Jun 27 23:43:22 1996  Richard Henderson  <rth@tamu.edu>

	* sysdeps/alpha/dl-machine.h (elf_machine_rela):  The Alpha's
	address-of operation and plt format conspire to require all
	dynamic relocs to be resolved to actual symbols not plt entries.

Thu Jun 27 02:49:28 1996  Ulrich Drepper  <drepper@cygnus.com>

	* catgets/gencat.c: Add casts to avoid signed<->unsigned warnings.

	* grp/initgroups.c (initgroups): De-ansi-fy.
	Move declaration of NGROUPS and GROUPS outside #if so that
	the code compiles for NGROUPS_MAX != 0.

	* inet/Makefile (headers): Add netinet/ether.h and netinet/if_ether.h.
	(routines): Add ether_aton, ether_aton_r, ether_hton, ether_line,
	ether_ntoa, ether_ntoa_r, and ether_ntoh.
	* inet/ether_aton.c, inet/ether_aton_r.c, inet/ether_hton.c,
	inet/ether_line.c, inet/ether_ntoa.c, inet/ether_ntoa_r.c,
	inet/ether_ntoh.c: New files.  Implementation of functions to
	handle Ethernet address to host mapping.
	* inet/netinet/ether.h: New file.  Declare ether_* functions.
	* netinet/ether.h: Wrapper around inet/netinet/ether.h for glibc
	compilation.
	* nss/ethers-lookup.c: New file.  Lookup function for ethers database.
	* nss/Makefile (routines): Add ethers-lookup.
	(libnss_files-routines): Add files-ethers.

	* nss/getXXent_r.c: Don't define set*ent and end*ent function
	with _r suffix.

	* nss/nss_files/files-XXX.c (internal_endent): Don't reset
	KEEP_STREAM every time called.
	(_nss_files_end): Reset KEEP_STREAM here instead.
	(internal_getent): If STREAM == NULL try to open instead of
	signalling error.
	Use cast to prevent warning.
	Terminate read line in case the buffer is too small.

	* nss/nss_files/files-ethers.c: New file.  Implementation of
	Ethernet adress<->hostname lookup through files interface.

	* stdlib/mbstowcs.c: Define based on mbsrtowcs().
	* stdlib/mbtowc.c: Define based on mbrtowc().
	* stdlib/wcstombs.c: Define based on wcsrtombs().
	* stdlib/wctomb.c: Define based on wcrtomb().

	* sunrpc/xdr.c (xdr_u_int): Avoid bogus call to
	unexpected_sizes_in_xdr_u_int.

	* sysdeps/generic/netinet/if_ether.h: New file.  Generic declaration
	of `struct ether_addr'.
	* sysdeps/unix/sysv/linux/netinet/if_ether.h: New file.  Linux specific
	declaration of `struct ether_addr'.

	* wcsmbs/mbrtowc.c: Handle case where argument PS is NULL.
	* wcsmbs/mbsrtowcs.c: Ditto.
	* wcsmbs/wcrtomb.c: Ditto.
	* wcsmbs/wcsrtombs.c: Ditto.

	* wcsmbs/mbsinit.c: Prepare for PS being NULL.

1 files changed, 26 insertions, 58 deletions

diff --git a/stdlib/mbtowc.c b/stdlib/mbtowc.c
index fd9449251c..c340dd72a6 100644
--- a/stdlib/mbtowc.c
+++ b/stdlib/mbtowc.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1995, 1996 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
@@ -16,73 +16,41 @@ License along with the GNU C Library; see the file COPYING.LIB.  If
 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
 Cambridge, MA 02139, USA.  */
 
-#include <ansidecl.h>
-#include "../locale/localeinfo.h"
-#include <ctype.h>
-#include <stddef.h>
-#include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
+#include <wchar.h>
 
 
-long int _mb_shift = 0;
+/* Common state for all non-restartable conversion functions.  */
+mbstate_t __no_r_state;
 
 /* Convert the multibyte character at S, which is no longer
    than N characters, to its `wchar_t' representation, placing
-   this n *PWC and returning its length.  */
+   this n *PWC and returning its length.
+
+   Attention: this function should NEVER be intentionally used.
+   The interface is completely stupid.  The state is shared between
+   all conversion functions.  You should use instead the restartable
+   version `mbrtowc'.  */
 int
-DEFUN(mbtowc, (pwc, s, n), wchar_t *pwc AND CONST char *s AND size_t n)
+mbtowc (wchar_t *pwc, const char *s, size_t n)
 {
-#if 0
-  register CONST mb_char *mb;
-  register wchar_t i;
-#endif
-
+  int result;
+
+  /* If S is NULL the function has to return null or not null
+     depending on the encoding having a state depending encoding or
+     not.  This is nonsense because any multibyte encoding has a
+     state.  The ISO C amendment 1 corrects this while introducing the
+     restartable functions.  We simply say here all encodings have a
+     state.  */
   if (s == NULL)
-    return _mb_shift != 0;
-
-  if (*s == '\0')
-    /* ANSI 4.10.7.2, line 19.  */
-    return 0;
-
-  if (isascii (*s))
-    {
-      /* A normal ASCII character translates to itself.  */
-      if (pwc != NULL)
-	*pwc = (wchar_t) *s;
-      return 1;
-    }
-
-#if 0
-  if (_ctype_info->mbchar == NULL ||
-      _ctype_info->mbchar->mb_chars == NULL)
-    return -1;
+    return 1;
 
-  if (n > MB_CUR_MAX)
-    n = MB_CUR_MAX;
+  result = mbrtowc (pwc, s, n, &__no_r_state);
 
-  for (i = 0; i < WCHAR_MAX; ++i)
-    {
-      mb = &_ctype_info->mbchar->mb_chars[i];
-      /* EOF and NUL aren't MB chars.  */
-      if (i == (wchar_t) EOF || i == (wchar_t) '\0')
-	continue;
-      /* Normal ASCII values can't start MB chars.  */
-      else if (isascii(i))
-	continue;
-      else if (mb->string == NULL || mb->len == 0)
-	continue;
-      else if (mb->len > n)
-	continue;
-      else if (!strncmp(mb->string, s, mb->len))
-	{
-	  _mb_shift += mb->shift;
-	  if (pwc != NULL)
-	    *pwc = i;
-	  return mb->len;
-	}
-    }
-#endif
+  /* The `mbrtowc' functions tell us more than we need.  Fold the -1
+     and -2 result into -1.  */
+  if (result < 0)
+    result = -1;
 
-  return -1;
+  return result;
 }