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 d413e3aa54..357e0d99c3 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 07178108cf..08ee4cd40a 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 42a01d4141..7a6793c5a7 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 a2aee54559..f4a1357169 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 6bd2920e74..dbc063cc97 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 ca17832220..f1efd21e87 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 ef0c7a3137..f283c17450 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 506aac8472..ae1724545e 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 0000000000..4c30578447
--- /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 0000000000..b86f66cf4d
--- /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));
+