update from main archive 961030cvs/libc-961031

Thu Oct 31 00:01:39 1996  Ulrich Drepper  <drepper@cygnus.com>

	* signal/Makefile (routines): Add sigwait.
	* signal/signal.h: Add prototype for sigwait.
	* sysdeps/posix/sigwait.c: New file.  Implementation of sigwait
	function from POSIX.1c.
	* sysdeps/stub/sigwait.c: New file.  Stub version of sigwait.

Wed Oct 30 02:01:17 1996  Richard Henderson  <rth@tamu.edu>

	* sunrpc/xdr_float.c (xdr_float): Handle sizeof(float)!=sizeof(long),
	but don't bother going farther than sizeof(float)==sizeof(int).
	(xdr_double): Handle little-endian machines!  Handle sizeof(double)
	!= 2*sizeof(long), though again don't bother with more than int.

Thu Oct 29 16:09:42 1996  Craig Metz  <cmetz@inner.net>

	* sysdeps/posix/getaddrinfo.c: Use buffer limits for inet_ntop
	function.

Tue Oct 29 12:37:22 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Makerules: Create symbolic links for linking in $(libdir).
	(make-link): Use absolute path for destination if this is not in
	the same directory.

	* elf/rtld.c (dl_main): When verifying don't check the name of
	the dynamic linker.

	* shlib-versions: Change entries for Hurd specific libs from
	*-*-gnu* to *-*-gnu?* so that i586-pc-linux-gnu does not match
	these entries.

	* assert/assert.h: Reformat copyright.
	Change reference to ANSI into reference to ISO C.
	* ctype/ctype.h: Likewise.
	* errno.h: Likewise.
	* limits.h: Likewise.
	* math/math.h: Likewise.
	* setjmp/setjmp.h: Likewise.
	* stdio/stdio.h: Likewise.
	* libio/stdio.h: Likewise.
	* stdlib/stdlib.h: Likewise.
	* string/string.h: Likewise.
	* time/time.h: Likewise.

	* string/argz.h: Use __const is definitions.

	* elf/dlfcn.h: Use __const and __P.  Reformat copyright.
	* misc/err.h: Likewise.

	* wctype/wctype.h (wctrans_t): Use __const instead of const.

	* Makeconfig ($(common-objpfx)soversions.mk): Generate list of
	sonames for versioned libraries.
	* Makefile: Remove code to generate libc-version.h.
	Generate gnu/lib-names.h with info from soversions.mk.
	* features.h: Define __GLIBC__ and __GLIBC_MINOR__.

	* dirent/tst-seekdir.c: Initialize save3.
	* grp/testgrp.c: Initialize my_group.

	* grp/fgetgrent_r.c: Change interface to follow POSIX.1c.
	* grp/grp.h: Likewise.
	* nss/getXXbyYY.c: Likewise.
	* nss/getXXbyYY_r.c: Likewise.
	* nss/getXXent.c: Likewise.
	* nss/getXXent_r.c: Likewise.
	* pwd/fgetpwent_r.c: Likewise.
	* pwd/pwd.h: Likewise.
	* shadow/fgetspent_r.c: Likewise.
	* shadow/sgetspent.c: Likewise.
	* shadow/sgetspent_r.c: Likewise.
	* grp/fgetgrent.c: Adapt for change in interface of fgetgrent_r.
	* pwd/fgetpwent.c: Likewise, for fgetpwent_r.c.
	* shadow/fgetspent.c: Likewise, for fgetpwent_r.c.
	* resolv/netdb.h: Adapt prototypes for reentrant functions to
	follow POSIX.1c.
	* sunrpc/rpc/netdb.h: Likewise,
	* shadow/shadow.h: Likewise.

	* inet/getnetgrent_r.c: Follow change in pwd/grp function interface.

	* sysdeps/unix/getlogin_r.c: Return ERANGE when buffer is too small.

	* inet/herrno.c: Don't define __h_errno.  Only h_errno otherwise the
	ELF aliasing creates strange situations.
	* sysdeps/unix/sysv/linux/errnos.H: Define __set_errno as inline
	function.
	* sysdeps/unix/sysv/linux/i386/sysdep.S: Don't define __errno.
	* sysdeps/unix/sysv/linux/m68k/sysdep.S: Likewise.

	* libio/libio.h: Don't declare _IO_flockfile and _IO_funlockfile
	weak.

	* locale/programs/charmap.c: Add casts to prevent warnings.
	* locale/programs/linereader.h: Likewise.
	* locale/programs/ld-collate.c: Likewise.
	* locale/programs/stringtrans.c: Likewise.
	Change types for various variables to prevent warnings.
	* locale/programs/ld-ctype.c: Likewise.
	* locale/programs/linereader.h (lr_ungetc): Likewise.
	* locale/programs/charset.h (struct charset): Use `unsigned int'
	as type for width_default.
	* posix/regex.c: Change type of `this_reg' variables.
	* stdio-common/Makefile: Use -Wno-format for tstdiomisc.c.
	* stdio-common/bug5.c: De-ANSI-fy.  Use correct types for
	variables.
	* stdio-common/printf_fp.c: Initialize to_shift.
	* stdio-common/test_rdwr.c: Add cast.
	* stdio-common/vfprintf.c: Add casts and use correct types to
	prevent warnings.
	* stdio-common/vfscanf.c: Initialize str and strptr.
	* sysdeps/libm-ieee754/e_jnf.c: Use correct types to prevent warnings.
	* sysdeps/libm-ieee754/e_pow.c: Likewise.
	* sysdeps/libm-ieee754/e_powf.c: Likewise.
	* sysdeps/libm-ieee754/e_rem_pio2f.c: Likewise.
	* time/test-tz.c: Likewise.

	* manual/creature.texi: Document _REENTRANT and _THREAD_SAFE.
	* manual/libc.texinfo: Prevent makeinfo failure by avoiding
	libc.cp index.  This must be fixed.
	* manual/nss.texi: Adapt for correct POSIX.1c interface of
	reentrant functions.
	* manual/users.texi: Document netgroup functions.

	* po/es.po: Updated.
	* po/fr.po: Updated.

	* posix/fnmatch.c: Change to match libit version.

	* posix/unistd.h: Change prototype for ttyname_r to match POSIX.1c.
	* sysdep/posix/ttyname_r.c: Likewise.

	* stdlib/atexit.h (__new_exitfn): Add internal locking.
	* stdlib/exit.c: De-ANSI-fy.  Handle new ef_us value for flavor.
	* stdlib/exit.h: De-ANSI-fy.  Define new ef_us value for flavor.
	* stdlib/random.c (__srandom): Add internal locking.
	(__initstate): Likewise.
	(__setstate): Likewise.
	(__random): Likewise.

Mon Oct 28 22:28:37 1996  NIIBE Yutaka  <gniibe@mri.co.jp>

	* sysdeps/generic/crypt-entry.c (crypt_r): Use __set_errno.
	(crypt): Likewise.
	* resolv/gethnamaddr.c (gethostbyname2): Likewise.
	* sysdeps/generic/uname.c: Likewise.
	* sysdeps/posix/rename.c: Likewise.
	* sysdeps/stub/setrlimit.c: Likewise.

	* nss/nss_db/db-netgrp.c (_nss_db_setnetgrent): Fix typo.

Sun Oct 27 11:12:50 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* locale/programs/ld-collate.c (collate_order_elem): Fix format
	string.
	(collate_element_to): Cast field width argument to `int' for
	format string.
	(collate_symbol): Likewise.
	(collate_order_elem): Likewise.
	(collate_weight_bsymbol): Likewise.
	(collate_simple_weight): Likewise.

	* locale/programs/ld-time.c (STRARR_ELEM): Fix format string.

	* locale/programs/ld-ctype.c (ctype_class_newP): Add missing
	argument for format string.
	(ctype_map_newP): Likewise.
	(set_class_defaults): Fix format string.

	* locale/programs/localedef.c (construct_output_path): Putting an
	explicit \0 into the format string does not work, use %c.

Sat Oct 26 20:38:36 1996  Richard Henderson  <rth@tamu.edu>

	* Makerules: Install all shared libraries in $(slibdir).

	* login/Makefile: Build libutil.so in others pass after
	libc.so is created.

	* misc/mntent.h: Include <paths.h> for _PATH_MNTTAB & _PATH_MOUNTED.

	* string/stratcliff.c: Allocate 3 pages instead of one, then use
	mprotect so that we know that the adjacent pages are inaccessible.

	* resource/sys/resource.h: Move all structures and enums to ...
	* sysdeps/generic/resourcebits.h: ... here ...
	* sysdeps/unix/bsd/sun/sunos4/resourcebits.h: ... and here.
	* sysdeps/unix/sysv/linux/alpha/resourcebits.h: Remove.
	* sysdeps/unix/sysv/linux/i386/resourcebits.h: Remove.
	* sysdeps/unix/sysv/linux/m68k/resourcebits.h: Remove.
	* sysdeps/unix/sysv/linux/mips/resourcebits.h: Remove.
	* sysdeps/unix/sysv/linux/resourcebits.h: New file.  Use kernel
	header for RLIMIT_* definitions.  The members of struct rlimit
	are longs.


Thu Oct 24 17:43:34 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* MakeTAGS (sysdep-dirs): Fix typo.

Wed Oct 23 03:45:22 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (headers): Don't mention libc-version.h.
	(install-others): ...but here.

	* time/strptime.c: Recognize %s, %u, %g, and %G format.
 	nothing is found.  This guarantees all subsequent calls behave
	* sysdeps/unix/sysv/linux/syscalls.list: Change function name for
	* io/getwd.c (getwd) [! PATH_MAX]: Don't assume that the user's
	buffer is any longer than the amount necessary to hold the
	filename; the Hurd getcwd uses the *entire* contents of the
	buffer, however long it is specified to be.
	* posix/getconf.c: De-ANSI-fy.  Recognize POSIX.2 constant names.
	since these do not depend on the platform.

5 files changed, 99 insertions, 51 deletions

diff --git a/stdlib/atexit.c b/stdlib/atexit.c
index a2ab453..675de66 100644
--- a/stdlib/atexit.c
+++ b/stdlib/atexit.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 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
@@ -16,16 +16,16 @@ 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 <libc-lock.h>
 #include <stdlib.h>
 #include "exit.h"
 
 
 /* Register FUNC to be executed by `exit'.  */
 int
-DEFUN(atexit, (func), void EXFUN((*func), (NOARGS)))
+atexit (void (*func) (void))
 {
-  struct exit_function *new = __new_exitfn();
+  struct exit_function *new = __new_exitfn ();
 
   if (new == NULL)
     return -1;
@@ -36,30 +36,55 @@ DEFUN(atexit, (func), void EXFUN((*func), (NOARGS)))
 }
 
 
+/* We change global data, so we need locking.  */
+__libc_lock_define_initialized (static, lock)
+
+
 static struct exit_function_list fnlist = { NULL, 0, };
 struct exit_function_list *__exit_funcs = &fnlist;
 
 struct exit_function *
-DEFUN_VOID(__new_exitfn)
+__new_exitfn (void)
 {
-  register struct exit_function_list *l;
+  struct exit_function_list *l;
+  size_t i = 0;
+
+  __libc_lock_lock (lock)
 
   for (l = __exit_funcs; l != NULL; l = l->next)
     {
-      register size_t i;
       for (i = 0; i < l->idx; ++i)
 	if (l->fns[i].flavor == ef_free)
-	  return &l->fns[i];
-      if (l->idx < sizeof(l->fns) / sizeof(l->fns[0]))
-	return &l->fns[l->idx++];
+	  break;
+      if (i < l->idx)
+	break;
+
+      if (l->idx < sizeof (l->fns) / sizeof (l->fns[0]))
+	{
+	  i = l->idx++;
+	  break;
+	}
     }
 
-  l = (struct exit_function_list *) malloc(sizeof(struct exit_function_list));
   if (l == NULL)
-    return NULL;
-  l->next = __exit_funcs;
-  __exit_funcs = l;
+    {
+      l = (struct exit_function_list *)
+	malloc (sizeof (struct exit_function_list));
+      if (l != NULL)
+	{
+	  l->next = __exit_funcs;
+	  __exit_funcs = l;
+
+	  l->idx = 1;
+      	  i = 0;
+	}
+    }
+
+  /* Mark entry as used, but we don't know the flavor now.  */
+  if (l != NULL)
+    l->fns[i].flavor = ef_us;
+
+  __libc_lock_unlock (lock)
 
-  l->idx = 1;
-  return &l->fns[0];
+  return l == NULL ? NULL : &l->fns[i];
 }
diff --git a/stdlib/exit.c b/stdlib/exit.c
index 4f33a25..ec7ee6a 100644
--- a/stdlib/exit.c
+++ b/stdlib/exit.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 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
@@ -16,7 +16,6 @@ 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 <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -32,25 +31,26 @@ DEFINE_HOOK (__libc_atexit, (void))
    in the reverse of the order in which they were registered
    perform stdio cleanup, and terminate program execution with STATUS.  */
 void
-DEFUN(exit, (status), int status)
+exit (int status)
 {
-  register CONST struct exit_function_list *l;
+  const struct exit_function_list *l;
 
   for (l = __exit_funcs; l != NULL; l = l->next)
     {
-      register size_t i = l->idx;
+      size_t i = l->idx;
       while (i-- > 0)
 	{
-	  CONST struct exit_function *CONST f = &l->fns[i];
+	  const struct exit_function *const f = &l->fns[i];
 	  switch (f->flavor)
 	    {
 	    case ef_free:
+	    case ef_us:
 	      break;
 	    case ef_on:
-	      (*f->func.on.fn)(status, f->func.on.arg);
+	      (*f->func.on.fn) (status, f->func.on.arg);
 	      break;
 	    case ef_at:
-	      (*f->func.at)();
+	      (*f->func.at) ();
 	      break;
 	    }
 	}
@@ -60,11 +60,10 @@ DEFUN(exit, (status), int status)
   RUN_HOOK (__libc_atexit, ());
 #else
   {
-    extern void EXFUN(_cleanup, (NOARGS));
-    _cleanup();
+    extern void _cleanup (void);
+    _cleanup ();
   }
 #endif
 
-  _exit(status);
+  _exit (status);
 }
-
diff --git a/stdlib/exit.h b/stdlib/exit.h
index 2142178..83d20b7 100644
--- a/stdlib/exit.h
+++ b/stdlib/exit.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 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
@@ -20,14 +20,14 @@ Cambridge, MA 02139, USA.  */
 
 struct exit_function
   {
-    enum { ef_free, ef_on, ef_at } flavor;	/* `ef_free' MUST be zero!  */
+    enum { ef_free, ef_us, ef_on, ef_at } flavor; /* `ef_free' MUST be zero! */
     union
       {
-	void EXFUN((*at), (NOARGS));
+	void (*at) (void);
 	struct
 	  {
-	    void EXFUN((*fn), (int status, PTR arg));
-	    PTR arg;
+	    void (*fn) (int status, void *arg);
+	    void *arg;
 	  } on;
       } func;
   };
@@ -39,6 +39,6 @@ struct exit_function_list
   };
 extern struct exit_function_list *__exit_funcs;
 
-extern struct exit_function *EXFUN(__new_exitfn, (NOARGS));
+extern struct exit_function *__new_exitfn (void);
 
 #endif	/* exit.h  */
diff --git a/stdlib/random.c b/stdlib/random.c
index e2b191b..461b76f 100644
--- a/stdlib/random.c
+++ b/stdlib/random.c
@@ -22,6 +22,7 @@
  * Rewritten to use reentrant functions by Ulrich Drepper, 1995.
  */
 
+#include <libc-lock.h>
 #include <limits.h>
 #include <stddef.h>
 #include <stdlib.h>
@@ -162,6 +163,11 @@ static struct random_data unsafe_state =
     end_ptr : &randtbl[sizeof (randtbl) / sizeof (randtbl[0])]
 };
 
+/* POSIX.1c requires that there is mutual exclusion for the `rand' and
+   `srand' functions to prevent concurrent calls from modifying common
+   data.  */
+__libc_lock_define_initialized (static, lock)
+
 /* Initialize the random number generator based on the given seed.  If the
    type is the trivial no-state-information type, just remember the seed.
    Otherwise, initializes state[] based on the given "seed" via a linear
@@ -174,7 +180,9 @@ void
 __srandom (x)
      unsigned int x;
 {
+  __libc_lock_lock (lock)
   (void) __srandom_r (x, &unsafe_state);
+  __libc_lock_unlock (lock)
 }
 
 weak_alias (__srandom, srandom)
@@ -197,10 +205,16 @@ __initstate (seed, arg_state, n)
      void *arg_state;
      size_t n;
 {
-  void *ostate = (void *) &unsafe_state.state[-1];
+  void *ostate;
+
+  __libc_lock_lock (lock)
+
+  ostate = (void *) &unsafe_state.state[-1];
 
   __initstate_r (seed, arg_state, n, &unsafe_state);
 
+  __libc_lock_unlock (lock)
+
   return ostate;
 }
 
@@ -218,10 +232,16 @@ void *
 __setstate (arg_state)
      void *arg_state;
 {
-  void *ostate = (void *) &unsafe_state.state[-1];
+  void *ostate;
+
+  __libc_lock_lock (lock)
+
+  ostate = (void *) &unsafe_state.state[-1];
 
   if (__setstate_r (arg_state, &unsafe_state) < 0)
-    return NULL;
+    ostate = NULL;
+
+  __libc_lock_unlock (lock)
 
   return ostate;
 }
@@ -244,8 +264,12 @@ __random ()
 {
   int32_t retval;
 
+  __libc_lock_lock (lock)
+
   (void) __random_r (&unsafe_state, &retval);
 
+  __libc_lock_unlock (lock)
+
   return retval;
 }
 
diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index cb48aa1..d11b8bf 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -1,23 +1,23 @@
 /* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+   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 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., 675 Mass Ave,
-Cambridge, MA 02139, 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.  */
 
 /*
- *	ANSI Standard: 4.10 GENERAL UTILITIES	<stdlib.h>
+ *	ISO S Standard: 4.10 GENERAL UTILITIES	<stdlib.h>
  */
 
 #ifndef	_STDLIB_H