update from main archive 960107cvs/libc-970113cvs/libc-970112cvs/libc-970111cvs/libc-970110cvs/libc-970109cvs/libc-970108

Tue Jan  7 09:48:15 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* signal/sigempty.c (sigemptyset): Correct typo: Empty set should
	have all bits zero.

Tue Jan  7 23:44:39 1997  Ulrich Drepper  <drepper@cygnus.com>

	* inet/gethstbynm.c: Include additional headers for additional
	code in nss/digits_dots.c.
	* inet/gethstbynm_r.c: Likewise.
	* inet/gethstbynm2.c: Likewise.
	* inet/gethstbynm2_r.c: Likewise.
	* nss/digits_dots.c: New file.  Handle dotted pair notation for
	gethstbynm functions.
	* nss/getXXbyYY.c: Include digits_dots.c to get extra code for
	handling dotted pair notation.
	* nss/getXXbyYY_r.c: Likewise.
	Patches by HJ Lu.

	* resolv/nss_dns/dns-host.c: Don't handle dotted pair notation.

	* io/getwd.c: Optimized a bit.

	* signal/signal.h: Always declare __sysv_signal.

	* sysdeps/generic/setenv.c: Add some portability code.

	* sysdeps/unix/sysv/fcntlbits.h: Update copyright.

	* sysdeps/unix/sysv/linux/fcntlbits.h: Add definitions from kernel
	to avoid using kernel headers.
	* sysdeps/unix/sysv/linux/alpha/fcntlbits.h: New file.  Alpha
	specific version.

	* sysdeps/unix/sysv/linux/syscalls.list: Add sys_mknod.  Don't
	mark sigreturn as EXTRA.

	* sysdeps/unix/sysv/linux/ustat.c: Declare __syscall_ustat.
	* sysdeps/unix/sysv/linux/alpha/ustat.c: New file.  Alpha version.

Tue Jan  7 09:48:15 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* io/fts.c (fts_alloc): Add const to second parameter of function.

	* io/Makefile: Change CFLAGS-fts.c and define CFLAGS-ftw.c to
	prevent warnings.

	* signal/sigfillset.c: Include <string.h> for memset declaration.

Tue Jan  7 11:14:32 1997  Miles Bader  <miles@gnu.ai.mit.edu>

	* sysdeps/generic/setenv.c: Fix portability problems.

Tue Jan  7 02:10:17 1997  Ulrich Drepper  <drepper@cygnus.com>

	* posix/getopt.c (_getopt_internal): Don't reset __getopt_initialized
	after the last option was seen.

Mon Jan  6 15:30:21 1997  Ulrich Drepper  <drepper@cygnus.com>

	* elf/elf.h (DT_EXTRANUM): Set to 3 since 0x7ffffffd is used.

24 files changed, 648 insertions, 184 deletions

diff --git a/ChangeLog b/ChangeLog
index d413e3a..357e0d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,65 @@
+Tue Jan  7 09:48:15 1997  Andreas Jaeger  <aj@arthur.pfalz.de>
+
+	* signal/sigempty.c (sigemptyset): Correct typo: Empty set should
+	have all bits zero.
+
+Tue Jan  7 23:44:39 1997  Ulrich Drepper  <drepper@cygnus.com>
+
+	* inet/gethstbynm.c: Include additional headers for additional
+	code in nss/digits_dots.c.
+	* inet/gethstbynm_r.c: Likewise.
+	* inet/gethstbynm2.c: Likewise.
+	* inet/gethstbynm2_r.c: Likewise.
+	* nss/digits_dots.c: New file.  Handle dotted pair notation for
+	gethstbynm functions.
+	* nss/getXXbyYY.c: Include digits_dots.c to get extra code for
+	handling dotted pair notation.
+	* nss/getXXbyYY_r.c: Likewise.
+	Patches by HJ Lu.
+
+	* resolv/nss_dns/dns-host.c: Don't handle dotted pair notation.
+
+	* io/getwd.c: Optimized a bit.
+
+	* signal/signal.h: Always declare __sysv_signal.
+
+	* sysdeps/generic/setenv.c: Add some portability code.
+
+	* sysdeps/unix/sysv/fcntlbits.h: Update copyright.
+
+	* sysdeps/unix/sysv/linux/fcntlbits.h: Add definitions from kernel
+	to avoid using kernel headers.
+	* sysdeps/unix/sysv/linux/alpha/fcntlbits.h: New file.  Alpha
+	specific version.
+
+	* sysdeps/unix/sysv/linux/syscalls.list: Add sys_mknod.  Don't
+	mark sigreturn as EXTRA.
+
+	* sysdeps/unix/sysv/linux/ustat.c: Declare __syscall_ustat.
+	* sysdeps/unix/sysv/linux/alpha/ustat.c: New file.  Alpha version.
+
+Tue Jan  7 09:48:15 1997  Andreas Jaeger  <aj@arthur.pfalz.de>
+
+	* io/fts.c (fts_alloc): Add const to second parameter of function.
+
+	* io/Makefile: Change CFLAGS-fts.c and define CFLAGS-ftw.c to
+	prevent warnings.
+
+	* signal/sigfillset.c: Include <string.h> for memset declaration.
+
+Tue Jan  7 11:14:32 1997  Miles Bader  <miles@gnu.ai.mit.edu>
+
+	* sysdeps/generic/setenv.c: Fix portability problems.
+
+Tue Jan  7 02:10:17 1997  Ulrich Drepper  <drepper@cygnus.com>
+
+	* posix/getopt.c (_getopt_internal): Don't reset __getopt_initialized
+	after the last option was seen.
+
+Mon Jan  6 15:30:21 1997  Ulrich Drepper  <drepper@cygnus.com>
+
+	* elf/elf.h (DT_EXTRANUM): Set to 3 since 0x7ffffffd is used.
+
 Mon Jan  6 13:57:05 1997  Ulrich Drepper  <drepper@cygnus.com>
 
 	* io/ftw.c: Add `const' to second parameter of function given as
diff --git a/inet/gethstbynm.c b/inet/gethstbynm.c
index 0717810..08ee4cd 100644
--- a/inet/gethstbynm.c
+++ b/inet/gethstbynm.c
@@ -1,23 +1,28 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
+#include <ctype.h>
+#include <errno.h>
 #include <netdb.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
 
 
 #define LOOKUP_TYPE	struct hostent
@@ -28,4 +33,6 @@ Boston, MA 02111-1307, USA.  */
 #define BUFLEN		1024
 #define NEED_H_ERRNO	1
 
+#define HANDLE_DIGITS_DOTS	1
+
 #include "../nss/getXXbyYY.c"
diff --git a/inet/gethstbynm2.c b/inet/gethstbynm2.c
index 42a01d4..7a6793c 100644
--- a/inet/gethstbynm2.c
+++ b/inet/gethstbynm2.c
@@ -1,23 +1,28 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
+#include <ctype.h>
+#include <errno.h>
 #include <netdb.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
 
 
 #define LOOKUP_TYPE	struct hostent
@@ -28,4 +33,7 @@ Boston, MA 02111-1307, USA.  */
 #define BUFLEN		1024
 #define NEED_H_ERRNO	1
 
+#define HANDLE_DIGITS_DOTS	1
+#define HAVE_AF			1
+
 #include "../nss/getXXbyYY.c"
diff --git a/inet/gethstbynm2_r.c b/inet/gethstbynm2_r.c
index a2aee54..f4a1357 100644
--- a/inet/gethstbynm2_r.c
+++ b/inet/gethstbynm2_r.c
@@ -1,23 +1,28 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
+#include <ctype.h>
+#include <errno.h>
 #include <netdb.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
 
 
 #define LOOKUP_TYPE	struct hostent
@@ -27,4 +32,8 @@ Boston, MA 02111-1307, USA.  */
 #define ADD_VARIABLES	name, af
 #define NEED_H_ERRNO	1
 
+#define HANDLE_DIGITS_DOTS	1
+#define HAVE_LOOKUP_BUFFER	1
+#define HAVE_AF			1
+
 #include "../nss/getXXbyYY_r.c"
diff --git a/inet/gethstbynm_r.c b/inet/gethstbynm_r.c
index 6bd2920..dbc063c 100644
--- a/inet/gethstbynm_r.c
+++ b/inet/gethstbynm_r.c
@@ -1,23 +1,28 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
+#include <ctype.h>
+#include <errno.h>
 #include <netdb.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
 
 
 #define LOOKUP_TYPE	struct hostent
@@ -28,4 +33,7 @@ Boston, MA 02111-1307, USA.  */
 #define NEED_H_ERRNO	1
 #define NEED__RES	1
 
+#define HANDLE_DIGITS_DOTS	1
+#define HAVE_LOOKUP_BUFFER	1
+
 #include "../nss/getXXbyYY_r.c"
diff --git a/io/Makefile b/io/Makefile
index ca17832..f1efd21 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+# Copyright (C) 1992, 93, 94, 95, 96, 97 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
@@ -55,4 +55,5 @@ tests		:= test-utime
 
 include ../Rules
 
-CFLAGS-fts.c = -Wno-write-strings
+CFLAGS-fts.c = -Wno-uninitialized
+CFLAGS-ftw.c = -Wno-uninitialized
diff --git a/io/fts.c b/io/fts.c
index ef0c7a3..f283c17 100644
--- a/io/fts.c
+++ b/io/fts.c
@@ -57,7 +57,7 @@ static char sccsid[] = "@(#)fts.c	8.2 (Berkeley) 1/2/94";
 #endif
 
 
-static FTSENT	*fts_alloc __P((FTS *, char *, int));
+static FTSENT	*fts_alloc __P((FTS *, const char *, int));
 static FTSENT	*fts_build __P((FTS *, int));
 static void	 fts_lfree __P((FTSENT *));
 static void	 fts_load __P((FTS *, FTSENT *));
@@ -886,7 +886,7 @@ fts_sort(sp, head, nitems)
 static FTSENT *
 fts_alloc(sp, name, namelen)
 	FTS *sp;
-	char *name;
+	const char *name;
 	register int namelen;
 {
 	register FTSENT *p;
diff --git a/io/getwd.c b/io/getwd.c
index 506aac8..ae17245 100644
--- a/io/getwd.c
+++ b/io/getwd.c
@@ -1,5 +1,5 @@
 /* Obsolete function to get current working directory.
-   Copyright (C) 1991, 1992, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1991, 1992, 1996, 1997 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
@@ -49,9 +49,7 @@ getwd (buf)
   /* This is completely unsafe.  Nobody can say how big the user
      provided buffer is.  Perhaps the application and the libc
      disagree about the value of PATH_MAX.  */
-  strcpy (buf, tmpbuf);
-
-  return buf;
+  return strcpy (buf, tmpbuf);
 }
 
 link_warning (getwd,
diff --git a/misc/syscall.h b/misc/syscall.h
new file mode 100644
index 0000000..4c30578
--- /dev/null
+++ b/misc/syscall.h
@@ -0,0 +1 @@
+#include <sys/syscall.h>
diff --git a/nss/digits_dots.c b/nss/digits_dots.c
new file mode 100644
index 0000000..b86f66c
--- /dev/null
+++ b/nss/digits_dots.c
@@ -0,0 +1,273 @@
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by H.J. Lu <hjl@gnu.ai.mit.edu>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+  /*
+   * disallow names consisting only of digits/dots, unless
+   * they end in a dot.
+   */
+  if (isdigit (name[0]) || (isxdigit (name[0]) || name[0] == ':'))
+    {
+      const char *cp;
+      char *hostname;
+      struct hostent *host;
+      typedef unsigned char host_addr_t [16];
+      host_addr_t *host_addr;
+      typedef char *host_addr_list_t [2];
+      host_addr_list_t *host_aliases;
+      host_addr_list_t *h_addr_ptrs;
+      size_t size_needed;
+      int addr_size;
+#ifndef HAVE_AF
+      int af = -1;
+#endif
+
+      switch (af)
+	{
+	case AF_INET:
+	  addr_size = INADDRSZ;
+	  break;
+
+	case AF_INET6:
+	  addr_size = IN6ADDRSZ;
+	  break;
+
+	default:
+	  af = (_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET;
+	  addr_size = (af == AF_INET6 ) ? IN6ADDRSZ : INADDRSZ;
+	  break;
+	}
+
+      size_needed = (sizeof (*host) + sizeof (*host_addr)
+		     + sizeof (*host_aliases) + sizeof (*h_addr_ptrs)
+		     + strlen (name) + 1);
+
+#ifdef HAVE_LOOKUP_BUFFER
+      if (buflen < size_needed)
+	{
+	  __set_errno (ERANGE);
+	  goto done;
+	}
+#else
+      if (buffer_size < size_needed)
+	{
+	  char *new_buf;
+	  buffer_size = size_needed;
+	  new_buf = realloc (buffer, buffer_size);
+
+	  if (new_buf == NULL)
+	    {
+	      save = errno;
+	      free (buffer);
+	      buffer = NULL;
+	      buffer_size = 0;
+	      __set_errno (save);
+	      result = (struct hostent *) NULL;
+	      goto done;
+	    }
+	  buffer = new_buf;
+	}
+#endif /* HAVE_LOOKUP_BUFFER */
+
+      memset (buffer, 0, size_needed);
+
+      host = (struct hostent *) buffer;
+      host_addr = (host_addr_t *) ((char *) host + sizeof (*host));
+      host_aliases = (host_addr_list_t *)
+	((char *) host_addr + sizeof (*host_addr));
+      h_addr_ptrs = (host_addr_list_t *)
+	((char *) host_aliases + sizeof (*host_aliases));
+      hostname = (char *) h_addr_ptrs + sizeof (*h_addr_ptrs);
+
+      if (isdigit (name[0]))
+	{
+	  for (cp = name;; ++cp)
+	    {
+	      if (!*cp)
+		{
+		  if (*--cp == '.') break;
+
+	/* All-numeric, no dot at the end. Fake up a hostent as if
+	   we'd actually done a lookup.  What if someone types
+	   255.255.255.255?  The test below will succeed
+	   spuriously... ???  */
+		  if (inet_pton (af, name, host_addr) <= 0)
+		    {
+		      __set_h_errno (HOST_NOT_FOUND);
+#ifndef HAVE_LOOKUP_BUFFER
+		      result = (struct hostent *) NULL;
+#endif
+		      goto done;
+		    }
+
+		  strcpy (hostname, name);
+		  host->h_name = hostname;
+		  host->h_aliases = *host_aliases;
+		  (*host_aliases)[0] = NULL;
+		  (*h_addr_ptrs)[0] = (char *)host_addr;
+		  (*h_addr_ptrs)[1] = (char *)0;
+		  host->h_addr_list = *h_addr_ptrs;
+		  if (_res.options & RES_USE_INET6 && af == AF_INET)
+		    {
+		      /* We need to change the IP v4 address into the
+			 IP v6 address.  */
+		      char tmp[INADDRSZ], *p = (char *) host_addr;
+		      int i;
+
+		      /* Save a copy of the IP v4 address. */
+		      memcpy (tmp, host_addr, INADDRSZ);
+		      /* Mark this ipv6 addr as a mapped ipv4. */
+		      for (i = 0; i < 10; i++)
+			*p++ = 0x00;
+		      *p++ = 0xff;
+		      *p++ = 0xff;
+		      /* Copy the IP v4 address. */
+		      memcpy (p, tmp, INADDRSZ);
+		      host->h_addrtype = AF_INET6;
+		      host->h_length = IN6ADDRSZ;
+		    }
+		  else
+		    {
+		      host->h_addrtype = af;
+		      host->h_length = addr_size;
+		    }
+		  __set_h_errno (NETDB_SUCCESS);
+#ifdef HAVE_LOOKUP_BUFFER
+		  status = NSS_STATUS_SUCCESS;
+#else
+		  result = host;
+#endif
+		  goto done;
+		}
+
+	      if (!isdigit (*cp) && *cp != '.') break;
+	    }
+	}
+
+      if (isxdigit (name[0]) || name[0] == ':')
+	{
+	  const char *cp;
+	  char *hostname;
+	  struct hostent *host;
+	  typedef unsigned char host_addr_t [16];
+	  host_addr_t *host_addr;
+	  typedef char *host_addr_list_t [2];
+	  host_addr_list_t *host_aliases;
+	  host_addr_list_t *h_addr_ptrs;
+	  size_t size_needed;
+	  int addr_size;
+#ifndef HAVE_AF
+	  int af = -1;
+#endif
+
+	  switch (af)
+	    {
+	    case AF_INET:
+	      addr_size = INADDRSZ;
+	      break;
+
+	    case AF_INET6:
+	      addr_size = IN6ADDRSZ;
+	      break;
+
+	    default:
+	      af = (_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET;
+	      addr_size = (af == AF_INET6 ) ? IN6ADDRSZ : INADDRSZ;
+	      break;
+	    }
+
+	  size_needed = (sizeof (*host) + sizeof (*host_addr)
+			 + sizeof (*host_aliases) + sizeof (*h_addr_ptrs)
+			 + strlen (name) + 1);
+
+#ifdef HAVE_LOOKUP_BUFFER
+	  if (buflen < size_needed)
+	    {
+	      __set_errno (ERANGE);
+	      goto done;
+	    }
+#else
+	  if (buffer_size < size_needed)
+	    {
+	      char *new_buf;
+	      buffer_size = size_needed;
+	      new_buf = realloc (buffer, buffer_size);
+
+	      if (new_buf == NULL)
+		{
+		  save = errno;
+		  free (buffer);
+		  __set_errno (save);
+		  buffer = NULL;
+		  buffer_size = 0;
+		  result = (struct hostent *) NULL;
+		  goto done;
+		}
+	      buffer = new_buf;
+	    }
+#endif /* HAVE_LOOKUP_BUFFER */
+
+	  memset (buffer, 0, size_needed);
+
+	  host = (struct hostent *) buffer;
+	  host_addr = (host_addr_t *) ((char *) host + sizeof (*host));
+	  host_aliases = (host_addr_list_t *)
+	    ((char *) host_addr + sizeof (*host_addr));
+	  h_addr_ptrs = (host_addr_list_t *)
+	    ((char *) host_aliases + sizeof (*host_aliases));
+	  hostname = (char *) h_addr_ptrs + sizeof (*h_addr_ptrs);
+
+	  for (cp = name;; ++cp)
+	    {
+	      if (!*cp)
+		{
+		  if (*--cp == '.') break;
+
+		  /* All-IPv6-legal, no dot at the end. Fake up a
+		     hostent as if we'd actually done a lookup.  */
+		  if (inet_pton (af, name, host_addr) <= 0)
+		    {
+		      __set_h_errno (HOST_NOT_FOUND);
+#ifndef HAVE_LOOKUP_BUFFER
+		      result = (struct hostent *) NULL;
+#endif
+		      goto done;
+		    }
+
+		  strcpy (hostname, name);
+		  host->h_name = hostname;
+		  host->h_aliases = *host_aliases;
+		  (*host_aliases)[0] = NULL;
+		  (*h_addr_ptrs)[0] = (char *) host_addr;
+		  (*h_addr_ptrs)[1] = (char *) 0;
+		  host->h_addr_list = *h_addr_ptrs;
+		  host->h_addrtype = af;
+		  host->h_length = addr_size;
+		  __set_h_errno (NETDB_SUCCESS);
+#ifdef HAVE_LOOKUP_BUFFER
+		  status = NSS_STATUS_SUCCESS;
+#else
+		  result = host;
+#endif
+		  goto done;
+		}
+
+	      if (!isxdigit (*cp) && *cp != ':' && *cp != '.') break;
+	    }
+	}
+    }
diff --git a/nss/getXXbyYY.c b/nss/getXXbyYY.c
index 529864a..542072b 100644
--- a/nss/getXXbyYY.c
+++ b/nss/getXXbyYY.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997 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
@@ -93,6 +93,13 @@ FUNCTION_NAME (ADD_PARAMS)
       buffer = malloc (buffer_size);
     }
 
+  if (buffer != NULL)
+    {
+#ifdef HANDLE_DIGITS_DOTS
+# include "digits_dots.c"
+#endif
+    }
+
   while (buffer != NULL
 	 && INTERNAL (REENTRANT_NAME) (ADD_VARIABLES, &resbuf, buffer,
 				       buffer_size, &result H_ERRNO_VAR) != 0
@@ -115,6 +122,9 @@ FUNCTION_NAME (ADD_PARAMS)
       buffer = new_buf;
     }
 
+#ifdef HANDLE_DIGITS_DOTS
+done:
+#endif
   /* Release lock.  Preserve error value.  */
   save = errno;
   __libc_lock_unlock (lock);
diff --git a/nss/getXXbyYY_r.c b/nss/getXXbyYY_r.c
index 6350238..371b2e3 100644
--- a/nss/getXXbyYY_r.c
+++ b/nss/getXXbyYY_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -93,6 +93,10 @@ INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer,
   int no_more;
   enum nss_status status = NSS_STATUS_UNAVAIL;
 
+#ifdef HANDLE_DIGITS_DOTS
+# include "digits_dots.c"
+#endif
+
   if (startp == NULL)
     {
       no_more = DB_LOOKUP_FCT (&nip, REENTRANT_NAME_STRING, (void **) &fct);
@@ -129,6 +133,9 @@ INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer,
 			    (void **) &fct, status, 0);
     }
 
+#ifdef HANDLE_DIGITS_DOTS
+done:
+#endif
   *result = status == NSS_STATUS_SUCCESS ? resbuf : NULL;
   return status == NSS_STATUS_SUCCESS ? 0 : -1;
 }
diff --git a/posix/getopt.c b/posix/getopt.c
index ac6ebe0..1cefc10 100644
--- a/posix/getopt.c
+++ b/posix/getopt.c
@@ -546,11 +546,6 @@ _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
 	     that we previously skipped, so the caller will digest them.  */
 	  if (first_nonopt != last_nonopt)
 	    optind = first_nonopt;
-
-	  /* Before we can be provide the next result we must be
-	     reinitialized.  */
-	  __getopt_initialized = 0;
-
 	  return EOF;
 	}
 
@@ -560,12 +555,7 @@ _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
       if (NONOPTION_P)
 	{
 	  if (ordering == REQUIRE_ORDER)
-	    {
-	      /* Before we can be provide the next result we must be
-		 reinitialized.  */
-	      __getopt_initialized = 0;
-	      return EOF;
-	    }
+	    return EOF;
 	  optarg = argv[optind++];
 	  return 1;
 	}
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 6ddf11c..8d9d517 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -164,84 +164,6 @@ _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result,
   if (strchr (name, '.') == NULL && (cp = __hostalias (name)) != NULL)
     name = cp;
 
-  /*
-   * disallow names consisting only of digits/dots, unless
-   * they end in a dot.
-   */
-  if (isdigit (name[0]))
-    for (cp = name;; ++cp)
-      {
-	if (*cp == '\0')
-	  {
-	    char *bp;
-
-	    if (*--cp == '.')
-	      break;
-	    /*
-	     * All-numeric, no dot at the end.  Fake up a hostent
-	     * as if we'd actually done a lookup.
-	     */
-	    if (inet_pton (af, name, host_data->host_addr) <= 0)
-	      {
-		*h_errnop = HOST_NOT_FOUND;
-		return NSS_STATUS_NOTFOUND;
-	      }
-
-	    bp = __stpncpy (host_data->linebuffer, name, linebuflen);
-	    host_data->linebuffer[linebuflen - 1] = '\0';
-	    linebuflen -= bp - host_data->linebuffer;
-
-	    result->h_name = host_data->linebuffer;
-	    result->h_aliases = host_data->aliases;
-	    host_data->aliases[0] = NULL;
-	    host_data->h_addr_ptrs[0] = (char *) host_data->host_addr;
-	    host_data->h_addr_ptrs[1] = NULL;
-	    result->h_addr_list = host_data->h_addr_ptrs;
-
-	    if (_res.options & RES_USE_INET6)
-	      map_v4v6_hostent (result, &bp, &linebuflen);
-	    *h_errnop = NETDB_SUCCESS;
-	    return NSS_STATUS_SUCCESS;
-	  }
-	if (!isdigit (*cp) && *cp != '.')
-	  break;
-      }
-  if (isxdigit (name[0]) || name[0] == ':')
-    for (cp = name;; ++cp)
-      {
-	if (*cp == '\0')
-	  {
-	    char *bp;
-
-	    if (*--cp == '.')
-	      break;
-	    /*
-	     * All-IPv6-legal, no dot at the end.  Fake up a hostent
-	     * as if we'd actually done a lookup.
-	     */
-	    if (inet_pton (af, name, host_data->host_addr) <= 0)
-	      {
-		*h_errnop = HOST_NOT_FOUND;
-		return NSS_STATUS_NOTFOUND;
-	      }
-
-	    bp = __stpncpy (host_data->linebuffer, name, linebuflen);
-	    host_data->linebuffer[linebuflen - 1] = '\0';
-	    linebuflen -= bp - host_data->linebuffer;
-
-	    result->h_name = host_data->linebuffer;
-	    result->h_aliases = host_data->aliases;
-	    host_data->aliases[0] = NULL;
-	    host_data->h_addr_ptrs[0] = (char *) host_data->host_addr;
-	    host_data->h_addr_ptrs[1] = NULL;
-	    result->h_addr_list = host_data->h_addr_ptrs;
-	    *h_errnop = NETDB_SUCCESS;
-	    return NSS_STATUS_SUCCESS;
-	  }
-	if (!isxdigit (*cp) && *cp != ':' && *cp != '.')
-	  break;
-      }
-
   n = res_search (name, C_IN, type, host_buffer.buf, sizeof (host_buffer));
   if (n < 0)
     return errno == ECONNREFUSED ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
diff --git a/signal/sigempty.c b/signal/sigempty.c
index 9dde24d..b6e0486 100644
--- a/signal/sigempty.c
+++ b/signal/sigempty.c
@@ -31,7 +31,7 @@ sigemptyset (set)
       return -1;
     }
 
-  memset (set, 0xff, sizeof (sigset_t));
+  memset (set, 0, sizeof (sigset_t));
 
   return 0;
 }
diff --git a/signal/sigfillset.c b/signal/sigfillset.c
index 04c80a5..2b42ed0 100644
--- a/signal/sigfillset.c
+++ b/signal/sigfillset.c
@@ -18,6 +18,7 @@
 
 #include <errno.h>
 #include <signal.h>
+#include <string.h>
 
 /* Set all signals in SET.  */
 int
diff --git a/signal/signal.h b/signal/signal.h
index cd833e8..b1953e5 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -52,12 +52,13 @@ typedef void (*__sighandler_t) __P ((int));
    By default `signal' has the BSD semantic.  */
 extern __sighandler_t signal __P ((int __sig, __sighandler_t __handler));
 
-#if defined __USE_XOPEN && !defined __USE_GNU
 /* The X/Open definition of `signal' specifies the SVID semantic.  Use
    the additional function `sysv_signal' when X/Open compatibility is
    requested.  */
 extern __sighandler_t __sysv_signal __P ((int __sig,
 					  __sighandler_t __handler));
+
+#if defined __USE_XOPEN && !defined __USE_GNU
 extern __sighandler_t sysv_signal __P ((int __sig, __sighandler_t __handler));
 
 /* Make sure the used `signal' implementation is the SVID version.  */
diff --git a/sysdeps/generic/setenv.c b/sysdeps/generic/setenv.c
index 9403ccb..6d0c231 100644
--- a/sysdeps/generic/setenv.c
+++ b/sysdeps/generic/setenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1995, 1996, 1997 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
@@ -21,6 +21,12 @@
 #endif
 
 #include <errno.h>
+#if !_LIBC
+# if !defined(errno) && !defined(HAVE_ERRNO_DECL)
+extern int errno;
+# endif
+# define __set_errno(ev) ((errno) = (ev))
+#endif
 
 #if _LIBC || HAVE_STDLIB_H
 # include <stdlib.h>
@@ -32,11 +38,14 @@
 # include <unistd.h>
 #endif
 
-#if _LIBC - 0 == 0
+#if !_LIBC
 # define __environ	environ
+# ifndef HAVE_ENVIRON_DECL
+extern char **environ;
+# endif
 #endif
 
-#if _LIBC - 0
+#if _LIBC
 /* This lock protects against simultaneous modifications of `environ'.  */
 # include <libc-lock.h>
 __libc_lock_define_initialized (static, envlock)
diff --git a/sysdeps/unix/sysv/fcntlbits.h b/sysdeps/unix/sysv/fcntlbits.h
index d7dbd0c..d049014 100644
--- a/sysdeps/unix/sysv/fcntlbits.h
+++ b/sysdeps/unix/sysv/fcntlbits.h
@@ -1,21 +1,21 @@
 /* O_*, F_*, FD_* bit values for System V.
-Copyright (C) 1991, 1992 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
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-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.  */
+   Copyright (C) 1991, 1992, 1997 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 #ifndef	_FCNTLBITS_H
 
diff --git a/sysdeps/unix/sysv/linux/alpha/fcntlbits.h b/sysdeps/unix/sysv/linux/alpha/fcntlbits.h
new file mode 100644
index 0000000..e8697d9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/fcntlbits.h
@@ -0,0 +1,93 @@
+/* O_*, F_*, FD_* bit values for Linux.
+   Copyright (C) 1995, 1996, 1997 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
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef	_FCNTLBITS_H
+#define	_FCNTLBITS_H	1
+
+#include <sys/types.h>
+
+
+/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
+   located on an ext2 file system */
+#define O_ACCMODE	  0003
+#define O_RDONLY	    00
+#define O_WRONLY	    01
+#define O_RDWR		    02
+#define O_CREAT		 01000	/* not fcntl */
+#define O_TRUNC		 02000	/* not fcntl */
+#define O_EXCL		 04000	/* not fcntl */
+#define O_NOCTTY	010000	/* not fcntl */
+
+#define O_NONBLOCK	 00004
+#define O_APPEND	 00010
+#define O_NDELAY	O_NONBLOCK
+#define O_SYNC		040000
+#define FASYNC		020000	/* fcntl, for BSD compatibility */
+
+#define F_DUPFD		0	/* dup */
+#define F_GETFD		1	/* get f_flags */
+#define F_SETFD		2	/* set f_flags */
+#define F_GETFL		3	/* more flags (cloexec) */
+#define F_SETFL		4
+#define F_GETLK		7
+#define F_SETLK		8
+#define F_SETLKW	9
+
+#define F_SETOWN	5	/*  for sockets. */
+#define F_GETOWN	6	/*  for sockets. */
+
+/* for F_[GET|SET]FL */
+#define FD_CLOEXEC	1	/* actually anything with low bit set goes */
+
+/* for posix fcntl() and lockf() */
+#define F_RDLCK		1
+#define F_WRLCK		2
+#define F_UNLCK		8
+
+/* for old implementation of bsd flock () */
+#define F_EXLCK		16	/* or 3 */
+#define F_SHLCK		32	/* or 4 */
+
+/* operations for bsd flock(), also used by the kernel implementation */
+#define LOCK_SH		1	/* shared lock */
+#define LOCK_EX		2	/* exclusive lock */
+#define LOCK_NB		4	/* or'd with one of the above to prevent
+				   blocking */
+#define LOCK_UN		8	/* remove lock */
+
+struct flock
+  {
+    short int l_type;
+    short int l_whence;
+    __off_t l_start;
+    __off_t l_len;
+    __pid_t l_pid;
+  };
+
+
+/* Define some more compatibility macros to be backward compatible with
+   BSD systems which did not managed to hide these kernel macros.  */
+#ifdef	__USE_BSD
+#define	FAPPEND		O_APPEND
+#define	FFSYNC		O_FSYNC
+#define	FNONBLOCK	O_NONBLOCK
+#define	FNDELAY		O_NDELAY
+#endif /* Use BSD.  */
+
+#endif	/* fcntlbits.h */
diff --git a/sysdeps/unix/sysv/linux/alpha/ustat.c b/sysdeps/unix/sysv/linux/alpha/ustat.c
index c09b4fd..6c64d31 100644
--- a/sysdeps/unix/sysv/linux/alpha/ustat.c
+++ b/sysdeps/unix/sysv/linux/alpha/ustat.c
@@ -20,6 +20,9 @@
 #include <sys/ustat.h>
 #include <sys/sysmacros.h>
 
+
+extern int __syscall_ustat (unsigned int dev, struct ustat *ubuf);
+
 int
 ustat (dev_t dev, struct ustat *ubuf)
 {
diff --git a/sysdeps/unix/sysv/linux/fcntlbits.h b/sysdeps/unix/sysv/linux/fcntlbits.h
index 43954df..d7e889f 100644
--- a/sysdeps/unix/sysv/linux/fcntlbits.h
+++ b/sysdeps/unix/sysv/linux/fcntlbits.h
@@ -1,5 +1,5 @@
 /* O_*, F_*, FD_* bit values for Linux.
-   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997 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
@@ -21,7 +21,64 @@
 #define	_FCNTLBITS_H	1
 
 #include <sys/types.h>
-#include <linux/fcntl.h>
+
+
+/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
+   located on an ext2 file system */
+#define O_ACCMODE	  0003
+#define O_RDONLY	    00
+#define O_WRONLY	    01
+#define O_RDWR		    02
+#define O_CREAT		  0100	/* not fcntl */
+#define O_EXCL		  0200	/* not fcntl */
+#define O_NOCTTY	  0400	/* not fcntl */
+#define O_TRUNC		 01000	/* not fcntl */
+#define O_APPEND	 02000
+#define O_NONBLOCK	 04000
+#define O_NDELAY	O_NONBLOCK
+#define O_SYNC		010000
+#define FASYNC		020000	/* fcntl, for BSD compatibility */
+
+#define F_DUPFD		0	/* dup */
+#define F_GETFD		1	/* get f_flags */
+#define F_SETFD		2	/* set f_flags */
+#define F_GETFL		3	/* more flags (cloexec) */
+#define F_SETFL		4
+#define F_GETLK		5
+#define F_SETLK		6
+#define F_SETLKW	7
+
+#define F_SETOWN	8	/*  for sockets. */
+#define F_GETOWN	9	/*  for sockets. */
+
+/* for F_[GET|SET]FL */
+#define FD_CLOEXEC	1	/* actually anything with low bit set goes */
+
+/* for posix fcntl() and lockf() */
+#define F_RDLCK		0
+#define F_WRLCK		1
+#define F_UNLCK		2
+
+/* for old implementation of bsd flock () */
+#define F_EXLCK		4	/* or 3 */
+#define F_SHLCK		8	/* or 4 */
+
+/* operations for bsd flock(), also used by the kernel implementation */
+#define LOCK_SH		1	/* shared lock */
+#define LOCK_EX		2	/* exclusive lock */
+#define LOCK_NB		4	/* or'd with one of the above to prevent
+				   blocking */
+#define LOCK_UN		8	/* remove lock */
+
+struct flock
+  {
+    short int l_type;
+    short int l_whence;
+    __off_t l_start;
+    __off_t l_len;
+    __pid_t l_pid;
+  };
+
 
 /* Define some more compatibility macros to be backward compatible with
    BSD systems which did not managed to hide these kernel macros.  */
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 246470a..5367a28 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -53,7 +53,8 @@ setpgid		-	setpgid		2	__setpgid	setpgid
 setresuid	EXTRA	setresuid	3	setresuid
 sigpending	-	sigpending	1	sigpending
 sigprocmask	-	sigprocmask	3	__sigprocmask	sigprocmask
-sigreturn	EXTRA	sigreturn	1	__sigreturn	sigreturn
+sigreturn	-	sigreturn	1	__sigreturn	sigreturn
+sys_mknod	xmknod	mknod		3	__syscall_mknod
 sysinfo		EXTRA	sysinfo		1	sysinfo
 swapon		-	swapon		2	swapon
 umount		EXTRA	umount		1	__umount	umount
diff --git a/sysdeps/unix/sysv/linux/ustat.c b/sysdeps/unix/sysv/linux/ustat.c
index 8cec8eb..a8dfbb4 100644
--- a/sysdeps/unix/sysv/linux/ustat.c
+++ b/sysdeps/unix/sysv/linux/ustat.c
@@ -20,6 +20,9 @@
 #include <sys/ustat.h>
 #include <sys/sysmacros.h>
 
+
+extern int __syscall_ustat (unsigned short int dev, struct ustat *ubuf);
+
 int
 ustat (dev_t dev, struct ustat *ubuf)
 {