Relicense under GPLv3

6 files changed, 6 insertions, 1534 deletions

diff --git a/lib/Makefile.am b/lib/Makefile.am
index b9fc8a45..466a477a 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -1,11 +1,11 @@
 # Makefile for GNU tar library.			-*- Makefile -*-
 
 # Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2003, 2004,
-# 2005, 2006 Free Software Foundation, Inc.
+# 2005, 2006, 2007 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 
 # This program is distributed in the hope that it will be useful,
diff --git a/lib/prepargs.c b/lib/prepargs.c
index 1b0d9f5e..1b6b0ce6 100644
--- a/lib/prepargs.c
+++ b/lib/prepargs.c
@@ -1,9 +1,9 @@
 /* Parse arguments from a string and prepend them to an argv.
-   Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright 1999, 2000, 2001, 2007 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
+   the Free Software Foundation; either version 3, or (at your option)
    any later version.
 
    This program is distributed in the hope that it will be useful,
diff --git a/lib/printf-parse.c b/lib/printf-parse.c
deleted file mode 100644
index f8e0ceda..00000000
--- a/lib/printf-parse.c
+++ /dev/null
@@ -1,535 +0,0 @@
-/* Formatted output to strings.
-   Copyright (C) 1999-2000, 2002-2004, 2006 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License along
-   with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-#include <config.h>
-
-/* Specification.  */
-#if WIDE_CHAR_VERSION
-# include "wprintf-parse.h"
-#else
-# include "printf-parse.h"
-#endif
-
-/* Get size_t, NULL.  */
-#include <stddef.h>
-
-/* Get intmax_t.  */
-#if HAVE_STDINT_H_WITH_UINTMAX
-# include <stdint.h>
-#endif
-#if HAVE_INTTYPES_H_WITH_UINTMAX
-# include <inttypes.h>
-#endif
-
-/* malloc(), realloc(), free().  */
-#include <stdlib.h>
-
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
-#if WIDE_CHAR_VERSION
-# define PRINTF_PARSE wprintf_parse
-# define CHAR_T wchar_t
-# define DIRECTIVE wchar_t_directive
-# define DIRECTIVES wchar_t_directives
-#else
-# define PRINTF_PARSE printf_parse
-# define CHAR_T char
-# define DIRECTIVE char_directive
-# define DIRECTIVES char_directives
-#endif
-
-#ifdef STATIC
-STATIC
-#endif
-int
-PRINTF_PARSE (const CHAR_T *format, DIRECTIVES *d, arguments *a)
-{
-  const CHAR_T *cp = format;		/* pointer into format */
-  size_t arg_posn = 0;		/* number of regular arguments consumed */
-  size_t d_allocated;			/* allocated elements of d->dir */
-  size_t a_allocated;			/* allocated elements of a->arg */
-  size_t max_width_length = 0;
-  size_t max_precision_length = 0;
-
-  d->count = 0;
-  d_allocated = 1;
-  d->dir = malloc (d_allocated * sizeof (DIRECTIVE));
-  if (d->dir == NULL)
-    /* Out of memory.  */
-    return -1;
-
-  a->count = 0;
-  a_allocated = 0;
-  a->arg = NULL;
-
-#define REGISTER_ARG(_index_,_type_) \
-  {									\
-    size_t n = (_index_);						\
-    if (n >= a_allocated)						\
-      {									\
-	size_t memory_size;						\
-	argument *memory;						\
-									\
-	a_allocated *= 2;						\
-	if (a_allocated <= n)						\
-	  a_allocated = n + 1;						\
-	if (SIZE_MAX / sizeof (argument) < a_allocated)			\
-	  /* Overflow, would lead to out of memory.  */			\
-	  goto error;							\
-	memory_size = a_allocated * sizeof (argument);			\
-	memory = (a->arg						\
-		  ? realloc (a->arg, memory_size)			\
-		  : malloc (memory_size));				\
-	if (memory == NULL)						\
-	  /* Out of memory.  */						\
-	  goto error;							\
-	a->arg = memory;						\
-      }									\
-    while (a->count <= n)						\
-      a->arg[a->count++].type = TYPE_NONE;				\
-    if (a->arg[n].type == TYPE_NONE)					\
-      a->arg[n].type = (_type_);					\
-    else if (a->arg[n].type != (_type_))				\
-      /* Ambiguous type for positional argument.  */			\
-      goto error;							\
-  }
-
-  while (*cp != '\0')
-    {
-      CHAR_T c = *cp++;
-      if (c == '%')
-	{
-	  size_t arg_index = ARG_NONE;
-	  DIRECTIVE *dp = &d->dir[d->count];/* pointer to next directive */
-
-	  /* Initialize the next directive.  */
-	  dp->dir_start = cp - 1;
-	  dp->flags = 0;
-	  dp->width_start = NULL;
-	  dp->width_end = NULL;
-	  dp->width_arg_index = ARG_NONE;
-	  dp->precision_start = NULL;
-	  dp->precision_end = NULL;
-	  dp->precision_arg_index = ARG_NONE;
-	  dp->arg_index = ARG_NONE;
-
-	  /* Test for positional argument.  */
-	  if (*cp >= '0' && *cp <= '9')
-	    {
-	      const CHAR_T *np;
-
-	      for (np = cp; *np >= '0' && *np <= '9'; np++)
-		;
-	      if (*np == '$')
-		{
-		  size_t n = 0;
-
-		  for (np = cp; *np >= '0' && *np <= '9'; np++)
-		    if (n < SIZE_MAX / 10)
-		      n = 10 * n + (*np - '0');
-		    else
-		      /* n too large for memory.  */
-		      goto error;
-		  if (n == 0)
-		    /* Positional argument 0.  */
-		    goto error;
-		  arg_index = n - 1;
-		  cp = np + 1;
-		}
-	    }
-
-	  /* Read the flags.  */
-	  for (;;)
-	    {
-	      if (*cp == '\'')
-		{
-		  dp->flags |= FLAG_GROUP;
-		  cp++;
-		}
-	      else if (*cp == '-')
-		{
-		  dp->flags |= FLAG_LEFT;
-		  cp++;
-		}
-	      else if (*cp == '+')
-		{
-		  dp->flags |= FLAG_SHOWSIGN;
-		  cp++;
-		}
-	      else if (*cp == ' ')
-		{
-		  dp->flags |= FLAG_SPACE;
-		  cp++;
-		}
-	      else if (*cp == '#')
-		{
-		  dp->flags |= FLAG_ALT;
-		  cp++;
-		}
-	      else if (*cp == '0')
-		{
-		  dp->flags |= FLAG_ZERO;
-		  cp++;
-		}
-	      else
-		break;
-	    }
-
-	  /* Parse the field width.  */
-	  if (*cp == '*')
-	    {
-	      dp->width_start = cp;
-	      cp++;
-	      dp->width_end = cp;
-	      if (max_width_length < 1)
-		max_width_length = 1;
-
-	      /* Test for positional argument.  */
-	      if (*cp >= '0' && *cp <= '9')
-		{
-		  const CHAR_T *np;
-
-		  for (np = cp; *np >= '0' && *np <= '9'; np++)
-		    ;
-		  if (*np == '$')
-		    {
-		      size_t n = 0;
-
-		      for (np = cp; *np >= '0' && *np <= '9'; np++)
-			if (n < SIZE_MAX / 10)
-			  n = 10 * n + (*np - '0');
-			else
-			  /* n too large for memory.  */
-			  goto error;
-		      if (n == 0)
-			/* Positional argument 0.  */
-			goto error;
-		      dp->width_arg_index = n - 1;
-		      cp = np + 1;
-		    }
-		}
-	      if (dp->width_arg_index == ARG_NONE)
-		{
-		  dp->width_arg_index = arg_posn++;
-		  if (dp->width_arg_index == ARG_NONE)
-		    /* arg_posn wrapped around.  */
-		    goto error;
-		}
-	      REGISTER_ARG (dp->width_arg_index, TYPE_INT);
-	    }
-	  else if (*cp >= '0' && *cp <= '9')
-	    {
-	      size_t width_length;
-
-	      dp->width_start = cp;
-	      for (; *cp >= '0' && *cp <= '9'; cp++)
-		;
-	      dp->width_end = cp;
-	      width_length = dp->width_end - dp->width_start;
-	      if (max_width_length < width_length)
-		max_width_length = width_length;
-	    }
-
-	  /* Parse the precision.  */
-	  if (*cp == '.')
-	    {
-	      cp++;
-	      if (*cp == '*')
-		{
-		  dp->precision_start = cp - 1;
-		  cp++;
-		  dp->precision_end = cp;
-		  if (max_precision_length < 2)
-		    max_precision_length = 2;
-
-		  /* Test for positional argument.  */
-		  if (*cp >= '0' && *cp <= '9')
-		    {
-		      const CHAR_T *np;
-
-		      for (np = cp; *np >= '0' && *np <= '9'; np++)
-			;
-		      if (*np == '$')
-			{
-			  size_t n = 0;
-
-			  for (np = cp; *np >= '0' && *np <= '9'; np++)
-			    if (n < SIZE_MAX / 10)
-			      n = 10 * n + (*np - '0');
-			    else
-			      /* n too large for memory.  */
-			      goto error;
-			  if (n == 0)
-			    /* Positional argument 0.  */
-			    goto error;
-			  dp->precision_arg_index = n - 1;
-			  cp = np + 1;
-			}
-		    }
-		  if (dp->precision_arg_index == ARG_NONE)
-		    {
-		      dp->precision_arg_index = arg_posn++;
-		      if (dp->precision_arg_index == ARG_NONE)
-			/* arg_posn wrapped around.  */
-			goto error;
-		    }
-		  REGISTER_ARG (dp->precision_arg_index, TYPE_INT);
-		}
-	      else
-		{
-		  size_t precision_length;
-
-		  dp->precision_start = cp - 1;
-		  for (; *cp >= '0' && *cp <= '9'; cp++)
-		    ;
-		  dp->precision_end = cp;
-		  precision_length = dp->precision_end - dp->precision_start;
-		  if (max_precision_length < precision_length)
-		    max_precision_length = precision_length;
-		}
-	    }
-
-	  {
-	    arg_type type;
-
-	    /* Parse argument type/size specifiers.  */
-	    {
-	      int flags = 0;
-
-	      for (;;)
-		{
-		  if (*cp == 'h')
-		    {
-		      flags |= (1 << (flags & 1));
-		      cp++;
-		    }
-		  else if (*cp == 'L')
-		    {
-		      flags |= 4;
-		      cp++;
-		    }
-		  else if (*cp == 'l')
-		    {
-		      flags += 8;
-		      cp++;
-		    }
-#ifdef HAVE_INTMAX_T
-		  else if (*cp == 'j')
-		    {
-		      if (sizeof (intmax_t) > sizeof (long))
-			{
-			  /* intmax_t = long long */
-			  flags += 16;
-			}
-		      else if (sizeof (intmax_t) > sizeof (int))
-			{
-			  /* intmax_t = long */
-			  flags += 8;
-			}
-		      cp++;
-		    }
-#endif
-		  else if (*cp == 'z' || *cp == 'Z')
-		    {
-		      /* 'z' is standardized in ISO C 99, but glibc uses 'Z'
-			 because the warning facility in gcc-2.95.2 understands
-			 only 'Z' (see gcc-2.95.2/gcc/c-common.c:1784).  */
-		      if (sizeof (size_t) > sizeof (long))
-			{
-			  /* size_t = long long */
-			  flags += 16;
-			}
-		      else if (sizeof (size_t) > sizeof (int))
-			{
-			  /* size_t = long */
-			  flags += 8;
-			}
-		      cp++;
-		    }
-		  else if (*cp == 't')
-		    {
-		      if (sizeof (ptrdiff_t) > sizeof (long))
-			{
-			  /* ptrdiff_t = long long */
-			  flags += 16;
-			}
-		      else if (sizeof (ptrdiff_t) > sizeof (int))
-			{
-			  /* ptrdiff_t = long */
-			  flags += 8;
-			}
-		      cp++;
-		    }
-		  else
-		    break;
-		}
-
-	      /* Read the conversion character.  */
-	      c = *cp++;
-	      switch (c)
-		{
-		case 'd': case 'i':
-#ifdef HAVE_LONG_LONG
-		  if (flags >= 16 || (flags & 4))
-		    type = TYPE_LONGLONGINT;
-		  else
-#endif
-		  if (flags >= 8)
-		    type = TYPE_LONGINT;
-		  else if (flags & 2)
-		    type = TYPE_SCHAR;
-		  else if (flags & 1)
-		    type = TYPE_SHORT;
-		  else
-		    type = TYPE_INT;
-		  break;
-		case 'o': case 'u': case 'x': case 'X':
-#ifdef HAVE_LONG_LONG
-		  if (flags >= 16 || (flags & 4))
-		    type = TYPE_ULONGLONGINT;
-		  else
-#endif
-		  if (flags >= 8)
-		    type = TYPE_ULONGINT;
-		  else if (flags & 2)
-		    type = TYPE_UCHAR;
-		  else if (flags & 1)
-		    type = TYPE_USHORT;
-		  else
-		    type = TYPE_UINT;
-		  break;
-		case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
-		case 'a': case 'A':
-#ifdef HAVE_LONG_DOUBLE
-		  if (flags >= 16 || (flags & 4))
-		    type = TYPE_LONGDOUBLE;
-		  else
-#endif
-		  type = TYPE_DOUBLE;
-		  break;
-		case 'c':
-		  if (flags >= 8)
-#ifdef HAVE_WINT_T
-		    type = TYPE_WIDE_CHAR;
-#else
-		    goto error;
-#endif
-		  else
-		    type = TYPE_CHAR;
-		  break;
-#ifdef HAVE_WINT_T
-		case 'C':
-		  type = TYPE_WIDE_CHAR;
-		  c = 'c';
-		  break;
-#endif
-		case 's':
-		  if (flags >= 8)
-#ifdef HAVE_WCHAR_T
-		    type = TYPE_WIDE_STRING;
-#else
-		    goto error;
-#endif
-		  else
-		    type = TYPE_STRING;
-		  break;
-#ifdef HAVE_WCHAR_T
-		case 'S':
-		  type = TYPE_WIDE_STRING;
-		  c = 's';
-		  break;
-#endif
-		case 'p':
-		  type = TYPE_POINTER;
-		  break;
-		case 'n':
-#ifdef HAVE_LONG_LONG
-		  if (flags >= 16 || (flags & 4))
-		    type = TYPE_COUNT_LONGLONGINT_POINTER;
-		  else
-#endif
-		  if (flags >= 8)
-		    type = TYPE_COUNT_LONGINT_POINTER;
-		  else if (flags & 2)
-		    type = TYPE_COUNT_SCHAR_POINTER;
-		  else if (flags & 1)
-		    type = TYPE_COUNT_SHORT_POINTER;
-		  else
-		    type = TYPE_COUNT_INT_POINTER;
-		  break;
-		case '%':
-		  type = TYPE_NONE;
-		  break;
-		default:
-		  /* Unknown conversion character.  */
-		  goto error;
-		}
-	    }
-
-	    if (type != TYPE_NONE)
-	      {
-		dp->arg_index = arg_index;
-		if (dp->arg_index == ARG_NONE)
-		  {
-		    dp->arg_index = arg_posn++;
-		    if (dp->arg_index == ARG_NONE)
-		      /* arg_posn wrapped around.  */
-		      goto error;
-		  }
-		REGISTER_ARG (dp->arg_index, type);
-	      }
-	    dp->conversion = c;
-	    dp->dir_end = cp;
-	  }
-
-	  d->count++;
-	  if (d->count >= d_allocated)
-	    {
-	      DIRECTIVE *memory;
-
-	      if (SIZE_MAX / (2 * sizeof (DIRECTIVE)) < d_allocated)
-		/* Overflow, would lead to out of memory.  */
-		goto error;
-	      d_allocated *= 2;
-	      memory = realloc (d->dir, d_allocated * sizeof (DIRECTIVE));
-	      if (memory == NULL)
-		/* Out of memory.  */
-		goto error;
-	      d->dir = memory;
-	    }
-	}
-    }
-  d->dir[d->count].dir_start = cp;
-
-  d->max_width_length = max_width_length;
-  d->max_precision_length = max_precision_length;
-  return 0;
-
-error:
-  if (a->arg)
-    free (a->arg);
-  if (d->dir)
-    free (d->dir);
-  return -1;
-}
-
-#undef DIRECTIVES
-#undef DIRECTIVE
-#undef CHAR_T
-#undef PRINTF_PARSE
diff --git a/lib/stdopen.c b/lib/stdopen.c
index 92825b58..0b637ad1 100644
--- a/lib/stdopen.c
+++ b/lib/stdopen.c
@@ -1,10 +1,10 @@
 /* stdopen.c - ensure that the three standard file descriptors are in use
 
-   Copyright (C) 2005 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
+   the Free Software Foundation; either version 3, or (at your option)
    any later version.
 
    This program is distributed in the hope that it will be useful,
diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
deleted file mode 100644
index 78ead8e3..00000000
--- a/lib/vasnprintf.c
+++ /dev/null
@@ -1,918 +0,0 @@
-/* vsprintf with automatic memory allocation.
-   Copyright (C) 1999, 2002-2006 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License along
-   with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Tell glibc's <stdio.h> to provide a prototype for snprintf().
-   This must come before <config.h> because <config.h> may include
-   <features.h>, and once <features.h> has been included, it's too late.  */
-#ifndef _GNU_SOURCE
-# define _GNU_SOURCE    1
-#endif
-
-#include <config.h>
-
-#ifndef IN_LIBINTL
-# include <alloca.h>
-#endif
-
-/* Specification.  */
-#if WIDE_CHAR_VERSION
-# include "vasnwprintf.h"
-#else
-# include "vasnprintf.h"
-#endif
-
-#include <stdio.h>	/* snprintf(), sprintf() */
-#include <stdlib.h>	/* abort(), malloc(), realloc(), free() */
-#include <string.h>	/* memcpy(), strlen() */
-#include <errno.h>	/* errno */
-#include <limits.h>	/* CHAR_BIT, INT_MAX */
-#include <float.h>	/* DBL_MAX_EXP, LDBL_MAX_EXP */
-#if WIDE_CHAR_VERSION
-# include "wprintf-parse.h"
-#else
-# include "printf-parse.h"
-#endif
-
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
-/* Some systems, like OSF/1 4.0 and Woe32, don't have EOVERFLOW.  */
-#ifndef EOVERFLOW
-# define EOVERFLOW E2BIG
-#endif
-
-#ifdef HAVE_WCHAR_T
-# ifdef HAVE_WCSLEN
-#  define local_wcslen wcslen
-# else
-   /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
-      a dependency towards this library, here is a local substitute.
-      Define this substitute only once, even if this file is included
-      twice in the same compilation unit.  */
-#  ifndef local_wcslen_defined
-#   define local_wcslen_defined 1
-static size_t
-local_wcslen (const wchar_t *s)
-{
-  const wchar_t *ptr;
-
-  for (ptr = s; *ptr != (wchar_t) 0; ptr++)
-    ;
-  return ptr - s;
-}
-#  endif
-# endif
-#endif
-
-#if WIDE_CHAR_VERSION
-# define VASNPRINTF vasnwprintf
-# define CHAR_T wchar_t
-# define DIRECTIVE wchar_t_directive
-# define DIRECTIVES wchar_t_directives
-# define PRINTF_PARSE wprintf_parse
-# define USE_SNPRINTF 1
-# if HAVE_DECL__SNWPRINTF
-   /* On Windows, the function swprintf() has a different signature than
-      on Unix; we use the _snwprintf() function instead.  */
-#  define SNPRINTF _snwprintf
-# else
-   /* Unix.  */
-#  define SNPRINTF swprintf
-# endif
-#else
-# define VASNPRINTF vasnprintf
-# define CHAR_T char
-# define DIRECTIVE char_directive
-# define DIRECTIVES char_directives
-# define PRINTF_PARSE printf_parse
-# define USE_SNPRINTF (HAVE_DECL__SNPRINTF || HAVE_SNPRINTF)
-# if HAVE_DECL__SNPRINTF
-   /* Windows.  */
-#  define SNPRINTF _snprintf
-# else
-   /* Unix.  */
-#  define SNPRINTF snprintf
-# endif
-#endif
-
-CHAR_T *
-VASNPRINTF (CHAR_T *resultbuf, size_t *lengthp, const CHAR_T *format, va_list args)
-{
-  DIRECTIVES d;
-  arguments a;
-
-  if (PRINTF_PARSE (format, &d, &a) < 0)
-    {
-      errno = EINVAL;
-      return NULL;
-    }
-
-#define CLEANUP() \
-  free (d.dir);								\
-  if (a.arg)								\
-    free (a.arg);
-
-  if (printf_fetchargs (args, &a) < 0)
-    {
-      CLEANUP ();
-      errno = EINVAL;
-      return NULL;
-    }
-
-  {
-    size_t buf_neededlength;
-    CHAR_T *buf;
-    CHAR_T *buf_malloced;
-    const CHAR_T *cp;
-    size_t i;
-    DIRECTIVE *dp;
-    /* Output string accumulator.  */
-    CHAR_T *result;
-    size_t allocated;
-    size_t length;
-
-    /* Allocate a small buffer that will hold a directive passed to
-       sprintf or snprintf.  */
-    buf_neededlength = 7 + d.max_width_length + d.max_precision_length + 6;
-#if HAVE_ALLOCA
-    if (buf_neededlength < 4000 / sizeof (CHAR_T))
-      {
-	buf = (CHAR_T *) alloca (buf_neededlength * sizeof (CHAR_T));
-	buf_malloced = NULL;
-      }
-    else
-#endif
-      {
-	if (SIZE_MAX / sizeof (CHAR_T) < buf_neededlength)
-	  goto out_of_memory_1;
-	buf = (CHAR_T *) malloc (buf_neededlength * sizeof (CHAR_T));
-	if (buf == NULL)
-	  goto out_of_memory_1;
-	buf_malloced = buf;
-      }
-
-    if (resultbuf != NULL)
-      {
-	result = resultbuf;
-	allocated = *lengthp;
-      }
-    else
-      {
-	result = NULL;
-	allocated = 0;
-      }
-    length = 0;
-    /* Invariants:
-       result is either == resultbuf or == NULL or malloc-allocated.
-       If length > 0, then result != NULL.  */
-
-    /* Ensures that allocated >= length + extra.  Aborts through a jump to
-       out_of_memory if size is too big.  */
-#define ENSURE_ALLOCATION(extra) \
-  {									     \
-    size_t needed = length + (extra);					     \
-    if (needed < length)						     \
-      goto out_of_memory;						     \
-    if (needed > allocated)						     \
-      {									     \
-	size_t memory_size;						     \
-	CHAR_T *memory;							     \
-									     \
-	allocated = (allocated > 0 ? 2 * allocated : 12);		     \
-	if (needed > allocated)						     \
-	  allocated = needed;						     \
-	if (SIZE_MAX / sizeof (CHAR_T) < allocated)			     \
-	  goto out_of_memory;						     \
-	memory_size = allocated * sizeof (CHAR_T);			     \
-	if (result == resultbuf || result == NULL)			     \
-	  memory = (CHAR_T *) malloc (memory_size);			     \
-	else								     \
-	  memory = (CHAR_T *) realloc (result, memory_size);		     \
-	if (memory == NULL)						     \
-	  goto out_of_memory;						     \
-	if (result == resultbuf && length > 0)				     \
-	  memcpy (memory, result, length * sizeof (CHAR_T));		     \
-	result = memory;						     \
-      }									     \
-  }
-
-    for (cp = format, i = 0, dp = &d.dir[0]; ; cp = dp->dir_end, i++, dp++)
-      {
-	if (cp != dp->dir_start)
-	  {
-	    size_t n = dp->dir_start - cp;
-
-	    ENSURE_ALLOCATION (n);
-	    memcpy (result + length, cp, n * sizeof (CHAR_T));
-	    length += n;
-	  }
-	if (i == d.count)
-	  break;
-
-	/* Execute a single directive.  */
-	if (dp->conversion == '%')
-	  {
-	    if (!(dp->arg_index == ARG_NONE))
-	      abort ();
-	    ENSURE_ALLOCATION (1);
-	    result[length] = '%';
-	    length += 1;
-	  }
-	else
-	  {
-	    if (!(dp->arg_index != ARG_NONE))
-	      abort ();
-
-	    if (dp->conversion == 'n')
-	      {
-		switch (a.arg[dp->arg_index].type)
-		  {
-		  case TYPE_COUNT_SCHAR_POINTER:
-		    *a.arg[dp->arg_index].a.a_count_schar_pointer = length;
-		    break;
-		  case TYPE_COUNT_SHORT_POINTER:
-		    *a.arg[dp->arg_index].a.a_count_short_pointer = length;
-		    break;
-		  case TYPE_COUNT_INT_POINTER:
-		    *a.arg[dp->arg_index].a.a_count_int_pointer = length;
-		    break;
-		  case TYPE_COUNT_LONGINT_POINTER:
-		    *a.arg[dp->arg_index].a.a_count_longint_pointer = length;
-		    break;
-#ifdef HAVE_LONG_LONG
-		  case TYPE_COUNT_LONGLONGINT_POINTER:
-		    *a.arg[dp->arg_index].a.a_count_longlongint_pointer = length;
-		    break;
-#endif
-		  default:
-		    abort ();
-		  }
-	      }
-	    else
-	      {
-		arg_type type = a.arg[dp->arg_index].type;
-		CHAR_T *p;
-		unsigned int prefix_count;
-		int prefixes[2];
-#if !USE_SNPRINTF
-		size_t tmp_length;
-		CHAR_T tmpbuf[700];
-		CHAR_T *tmp;
-
-		/* Allocate a temporary buffer of sufficient size for calling
-		   sprintf.  */
-		{
-		  size_t width;
-		  size_t precision;
-
-		  width = 0;
-		  if (dp->width_start != dp->width_end)
-		    {
-		      if (dp->width_arg_index != ARG_NONE)
-			{
-			  int arg;
-
-			  if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
-			    abort ();
-			  arg = a.arg[dp->width_arg_index].a.a_int;
-			  width = (arg < 0 ? (unsigned int) (-arg) : arg);
-			}
-		      else
-			{
-			  const CHAR_T *digitp = dp->width_start;
-
-			  do
-			    {
-			      size_t w_tmp = width * 10 + (*digitp++ - '0');
-			      if (SIZE_MAX / 10 < width || w_tmp < width)
-				goto out_of_memory;
-			      width = w_tmp;
-			    }
-			  while (digitp != dp->width_end);
-			}
-		    }
-
-		  precision = 6;
-		  if (dp->precision_start != dp->precision_end)
-		    {
-		      if (dp->precision_arg_index != ARG_NONE)
-			{
-			  int arg;
-
-			  if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
-			    abort ();
-			  arg = a.arg[dp->precision_arg_index].a.a_int;
-			  precision = (arg < 0 ? 0 : arg);
-			}
-		      else
-			{
-			  const CHAR_T *digitp = dp->precision_start + 1;
-
-			  precision = 0;
-			  while (digitp != dp->precision_end)
-			    {
-			      size_t p1 = 10 * precision + (*digitp++ - '0');
-			      precision = ((SIZE_MAX / 10 < precision
-					    || p1 < precision)
-					   ? SIZE_MAX : p1);
-			    }
-			}
-		    }
-
-		  switch (dp->conversion)
-		    {
-
-		    case 'd': case 'i': case 'u':
-# ifdef HAVE_LONG_LONG
-		      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
-					  * 0.30103 /* binary -> decimal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      else
-# endif
-		      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned long) * CHAR_BIT
-					  * 0.30103 /* binary -> decimal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      else
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned int) * CHAR_BIT
-					  * 0.30103 /* binary -> decimal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      if (tmp_length < precision)
-			tmp_length = precision;
-		      /* Multiply by 2, as an estimate for FLAG_GROUP.  */
-		      /* Add 1, to account for a leading sign.  */
-		      tmp_length = (tmp_length < SIZE_MAX / 2
-				    ? 2 * tmp_length + 1
-				    : SIZE_MAX);
-		      break;
-
-		    case 'o':
-# ifdef HAVE_LONG_LONG
-		      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
-					  * 0.333334 /* binary -> octal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      else
-# endif
-		      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned long) * CHAR_BIT
-					  * 0.333334 /* binary -> octal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      else
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned int) * CHAR_BIT
-					  * 0.333334 /* binary -> octal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      if (tmp_length < precision)
-			tmp_length = precision;
-		      /* Add 1, to account for a leading sign.  */
-		      tmp_length += (tmp_length < SIZE_MAX);
-		      break;
-
-		    case 'x': case 'X':
-# ifdef HAVE_LONG_LONG
-		      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
-					  * 0.25 /* binary -> hexadecimal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      else
-# endif
-		      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned long) * CHAR_BIT
-					  * 0.25 /* binary -> hexadecimal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      else
-			tmp_length =
-			  (unsigned int) (sizeof (unsigned int) * CHAR_BIT
-					  * 0.25 /* binary -> hexadecimal */
-					 )
-			  + 1; /* turn floor into ceil */
-		      if (tmp_length < precision)
-			tmp_length = precision;
-		      /* Add 2, to account for a leading sign or alternate form.  */
-		      if (tmp_length <= SIZE_MAX / 2)
-			tmp_length *= 2;
-		      break;
-
-		    case 'f': case 'F':
-# ifdef HAVE_LONG_DOUBLE
-		      if (type == TYPE_LONGDOUBLE)
-			tmp_length =
-			  (unsigned int) (LDBL_MAX_EXP
-					  * 0.30103 /* binary -> decimal */
-					  * 2 /* estimate for FLAG_GROUP */
-					 )
-			  + 1 /* turn floor into ceil */
-			  + 10; /* sign, decimal point etc. */
-		      else
-# endif
-			tmp_length =
-			  (unsigned int) (DBL_MAX_EXP
-					  * 0.30103 /* binary -> decimal */
-					  * 2 /* estimate for FLAG_GROUP */
-					 )
-			  + 1 /* turn floor into ceil */
-			  + 10; /* sign, decimal point etc. */
-		      tmp_length += precision;
-		      if (tmp_length < precision)
-			goto out_of_memory;
-		      break;
-
-		    case 'e': case 'E': case 'g': case 'G':
-		    case 'a': case 'A':
-		      tmp_length =
-			12; /* sign, decimal point, exponent etc. */
-		      tmp_length += precision;
-		      if (tmp_length < precision)
-			goto out_of_memory;
-		      break;
-
-		    case 'c':
-# if defined HAVE_WINT_T && !WIDE_CHAR_VERSION
-		      if (type == TYPE_WIDE_CHAR)
-			tmp_length = MB_CUR_MAX;
-		      else
-# endif
-			tmp_length = 1;
-		      break;
-
-		    case 's':
-# ifdef HAVE_WCHAR_T
-		      if (type == TYPE_WIDE_STRING)
-			{
-			  tmp_length =
-			    local_wcslen (a.arg[dp->arg_index].a.a_wide_string);
-
-#  if !WIDE_CHAR_VERSION
-			  if (SIZE_MAX / MB_CUR_MAX < tmp_length)
-			    goto out_of_memory;
-			  tmp_length *= MB_CUR_MAX;
-#  endif
-			}
-		      else
-# endif
-			tmp_length = strlen (a.arg[dp->arg_index].a.a_string);
-		      break;
-
-		    case 'p':
-		      tmp_length =
-			(unsigned int) (sizeof (void *) * CHAR_BIT
-					* 0.25 /* binary -> hexadecimal */
-				       )
-			  + 1 /* turn floor into ceil */
-			  + 2; /* account for leading 0x */
-		      break;
-
-		    default:
-		      abort ();
-		    }
-
-		  if (tmp_length < width)
-		    tmp_length = width;
-
-		  tmp_length++; /* account for trailing NUL */
-		  if (!tmp_length)
-		    goto out_of_memory;
-		}
-
-		if (tmp_length <= sizeof (tmpbuf) / sizeof (CHAR_T))
-		  tmp = tmpbuf;
-		else
-		  {
-		    if (SIZE_MAX / sizeof (CHAR_T) < tmp_length)
-		      /* Overflow, would lead to out of memory.  */
-		      goto out_of_memory;
-		    tmp = (CHAR_T *) malloc (tmp_length * sizeof (CHAR_T));
-		    if (tmp == NULL)
-		      /* Out of memory.  */
-		      goto out_of_memory;
-		  }
-#endif
-
-		/* Construct the format string for calling snprintf or
-		   sprintf.  */
-		p = buf;
-		*p++ = '%';
-		if (dp->flags & FLAG_GROUP)
-		  *p++ = '\'';
-		if (dp->flags & FLAG_LEFT)
-		  *p++ = '-';
-		if (dp->flags & FLAG_SHOWSIGN)
-		  *p++ = '+';
-		if (dp->flags & FLAG_SPACE)
-		  *p++ = ' ';
-		if (dp->flags & FLAG_ALT)
-		  *p++ = '#';
-		if (dp->flags & FLAG_ZERO)
-		  *p++ = '0';
-		if (dp->width_start != dp->width_end)
-		  {
-		    size_t n = dp->width_end - dp->width_start;
-		    memcpy (p, dp->width_start, n * sizeof (CHAR_T));
-		    p += n;
-		  }
-		if (dp->precision_start != dp->precision_end)
-		  {
-		    size_t n = dp->precision_end - dp->precision_start;
-		    memcpy (p, dp->precision_start, n * sizeof (CHAR_T));
-		    p += n;
-		  }
-
-		switch (type)
-		  {
-#ifdef HAVE_LONG_LONG
-		  case TYPE_LONGLONGINT:
-		  case TYPE_ULONGLONGINT:
-		    *p++ = 'l';
-		    /*FALLTHROUGH*/
-#endif
-		  case TYPE_LONGINT:
-		  case TYPE_ULONGINT:
-#ifdef HAVE_WINT_T
-		  case TYPE_WIDE_CHAR:
-#endif
-#ifdef HAVE_WCHAR_T
-		  case TYPE_WIDE_STRING:
-#endif
-		    *p++ = 'l';
-		    break;
-#ifdef HAVE_LONG_DOUBLE
-		  case TYPE_LONGDOUBLE:
-		    *p++ = 'L';
-		    break;
-#endif
-		  default:
-		    break;
-		  }
-		*p = dp->conversion;
-#if USE_SNPRINTF
-		p[1] = '%';
-		p[2] = 'n';
-		p[3] = '\0';
-#else
-		p[1] = '\0';
-#endif
-
-		/* Construct the arguments for calling snprintf or sprintf.  */
-		prefix_count = 0;
-		if (dp->width_arg_index != ARG_NONE)
-		  {
-		    if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
-		      abort ();
-		    prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
-		  }
-		if (dp->precision_arg_index != ARG_NONE)
-		  {
-		    if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
-		      abort ();
-		    prefixes[prefix_count++] = a.arg[dp->precision_arg_index].a.a_int;
-		  }
-
-#if USE_SNPRINTF
-		/* Prepare checking whether snprintf returns the count
-		   via %n.  */
-		ENSURE_ALLOCATION (1);
-		result[length] = '\0';
-#endif
-
-		for (;;)
-		  {
-		    size_t maxlen;
-		    int count;
-		    int retcount;
-
-		    maxlen = allocated - length;
-		    count = -1;
-		    retcount = 0;
-
-#if USE_SNPRINTF
-# define SNPRINTF_BUF(arg) \
-		    switch (prefix_count)				    \
-		      {							    \
-		      case 0:						    \
-			retcount = SNPRINTF (result + length, maxlen, buf,  \
-					     arg, &count);		    \
-			break;						    \
-		      case 1:						    \
-			retcount = SNPRINTF (result + length, maxlen, buf,  \
-					     prefixes[0], arg, &count);	    \
-			break;						    \
-		      case 2:						    \
-			retcount = SNPRINTF (result + length, maxlen, buf,  \
-					     prefixes[0], prefixes[1], arg, \
-					     &count);			    \
-			break;						    \
-		      default:						    \
-			abort ();					    \
-		      }
-#else
-# define SNPRINTF_BUF(arg) \
-		    switch (prefix_count)				    \
-		      {							    \
-		      case 0:						    \
-			count = sprintf (tmp, buf, arg);		    \
-			break;						    \
-		      case 1:						    \
-			count = sprintf (tmp, buf, prefixes[0], arg);	    \
-			break;						    \
-		      case 2:						    \
-			count = sprintf (tmp, buf, prefixes[0], prefixes[1],\
-					 arg);				    \
-			break;						    \
-		      default:						    \
-			abort ();					    \
-		      }
-#endif
-
-		    switch (type)
-		      {
-		      case TYPE_SCHAR:
-			{
-			  int arg = a.arg[dp->arg_index].a.a_schar;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_UCHAR:
-			{
-			  unsigned int arg = a.arg[dp->arg_index].a.a_uchar;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_SHORT:
-			{
-			  int arg = a.arg[dp->arg_index].a.a_short;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_USHORT:
-			{
-			  unsigned int arg = a.arg[dp->arg_index].a.a_ushort;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_INT:
-			{
-			  int arg = a.arg[dp->arg_index].a.a_int;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_UINT:
-			{
-			  unsigned int arg = a.arg[dp->arg_index].a.a_uint;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_LONGINT:
-			{
-			  long int arg = a.arg[dp->arg_index].a.a_longint;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_ULONGINT:
-			{
-			  unsigned long int arg = a.arg[dp->arg_index].a.a_ulongint;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#ifdef HAVE_LONG_LONG
-		      case TYPE_LONGLONGINT:
-			{
-			  long long int arg = a.arg[dp->arg_index].a.a_longlongint;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      case TYPE_ULONGLONGINT:
-			{
-			  unsigned long long int arg = a.arg[dp->arg_index].a.a_ulonglongint;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#endif
-		      case TYPE_DOUBLE:
-			{
-			  double arg = a.arg[dp->arg_index].a.a_double;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#ifdef HAVE_LONG_DOUBLE
-		      case TYPE_LONGDOUBLE:
-			{
-			  long double arg = a.arg[dp->arg_index].a.a_longdouble;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#endif
-		      case TYPE_CHAR:
-			{
-			  int arg = a.arg[dp->arg_index].a.a_char;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#ifdef HAVE_WINT_T
-		      case TYPE_WIDE_CHAR:
-			{
-			  wint_t arg = a.arg[dp->arg_index].a.a_wide_char;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#endif
-		      case TYPE_STRING:
-			{
-			  const char *arg = a.arg[dp->arg_index].a.a_string;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#ifdef HAVE_WCHAR_T
-		      case TYPE_WIDE_STRING:
-			{
-			  const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-#endif
-		      case TYPE_POINTER:
-			{
-			  void *arg = a.arg[dp->arg_index].a.a_pointer;
-			  SNPRINTF_BUF (arg);
-			}
-			break;
-		      default:
-			abort ();
-		      }
-
-#if USE_SNPRINTF
-		    /* Portability: Not all implementations of snprintf()
-		       are ISO C 99 compliant.  Determine the number of
-		       bytes that snprintf() has produced or would have
-		       produced.  */
-		    if (count >= 0)
-		      {
-			/* Verify that snprintf() has NUL-terminated its
-			   result.  */
-			if (count < maxlen && result[length + count] != '\0')
-			  abort ();
-			/* Portability hack.  */
-			if (retcount > count)
-			  count = retcount;
-		      }
-		    else
-		      {
-			/* snprintf() doesn't understand the '%n'
-			   directive.  */
-			if (p[1] != '\0')
-			  {
-			    /* Don't use the '%n' directive; instead, look
-			       at the snprintf() return value.  */
-			    p[1] = '\0';
-			    continue;
-			  }
-			else
-			  {
-			    /* Look at the snprintf() return value.  */
-			    if (retcount < 0)
-			      {
-				/* HP-UX 10.20 snprintf() is doubly deficient:
-				   It doesn't understand the '%n' directive,
-				   *and* it returns -1 (rather than the length
-				   that would have been required) when the
-				   buffer is too small.  */
-				size_t bigger_need =
-				  (allocated > 12 ? allocated : 12);
-				ENSURE_ALLOCATION (bigger_need);
-				continue;
-			      }
-			    else
-			      count = retcount;
-			  }
-		      }
-#endif
-
-		    /* Attempt to handle failure.  */
-		    if (count < 0)
-		      {
-			if (!(result == resultbuf || result == NULL))
-			  free (result);
-			if (buf_malloced != NULL)
-			  free (buf_malloced);
-			CLEANUP ();
-			errno = EINVAL;
-			return NULL;
-		      }
-
-#if !USE_SNPRINTF
-		    if (count >= tmp_length)
-		      /* tmp_length was incorrectly calculated - fix the
-			 code above!  */
-		      abort ();
-#endif
-
-		    /* Make room for the result.  */
-		    if (count >= maxlen)
-		      {
-			/* Need at least count bytes.  But allocate
-			   proportionally, to avoid looping eternally if
-			   snprintf() reports a too small count.  */
-			ENSURE_ALLOCATION (count < allocated
-					   ? allocated : count);
-#if USE_SNPRINTF
-			continue;
-#endif
-		      }
-
-#if USE_SNPRINTF
-		    /* The snprintf() result did fit.  */
-#else
-		    /* Append the sprintf() result.  */
-		    memcpy (result + length, tmp, count * sizeof (CHAR_T));
-		    if (tmp != tmpbuf)
-		      free (tmp);
-#endif
-
-		    length += count;
-		    break;
-		  }
-	      }
-	  }
-      }
-
-    /* Add the final NUL.  */
-    ENSURE_ALLOCATION (1);
-    result[length] = '\0';
-
-    if (result != resultbuf && length + 1 < allocated)
-      {
-	/* Shrink the allocated memory if possible.  */
-	CHAR_T *memory;
-
-	memory = (CHAR_T *) realloc (result, (length + 1) * sizeof (CHAR_T));
-	if (memory != NULL)
-	  result = memory;
-      }
-
-    if (buf_malloced != NULL)
-      free (buf_malloced);
-    CLEANUP ();
-    *lengthp = length;
-    if (length > INT_MAX)
-      goto length_overflow;
-    return result;
-
-  length_overflow:
-    /* We could produce such a big string, but its length doesn't fit into
-       an 'int'.  POSIX says that snprintf() fails with errno = EOVERFLOW in
-       this case.  */
-    if (result != resultbuf)
-      free (result);
-    errno = EOVERFLOW;
-    return NULL;
-
-  out_of_memory:
-    if (!(result == resultbuf || result == NULL))
-      free (result);
-    if (buf_malloced != NULL)
-      free (buf_malloced);
-  out_of_memory_1:
-    CLEANUP ();
-    errno = ENOMEM;
-    return NULL;
-  }
-}
-
-#undef SNPRINTF
-#undef USE_SNPRINTF
-#undef PRINTF_PARSE
-#undef DIRECTIVES
-#undef DIRECTIVE
-#undef CHAR_T
-#undef VASNPRINTF
diff --git a/lib/waitpid.c b/lib/waitpid.c
deleted file mode 100644
index b6f585e4..00000000
--- a/lib/waitpid.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/* Emulate waitpid on systems that just have wait.
-   Copyright 1994, 1995, 1998, 1999 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; see the file COPYING.
-   If not, write to the Free Software Foundation, 
-   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
-
-#define WAITPID_CHILDREN 8
-static pid_t waited_pid[WAITPID_CHILDREN];
-static int waited_status[WAITPID_CHILDREN];
-
-pid_t
-waitpid (pid_t pid, int *stat_loc, int options)
-{
-  int i;
-  pid_t p;
-
-  if (!options && (pid == -1 || 0 < pid))
-    {
-      /* If we have already waited for this child, return it immediately.  */
-      for (i = 0;  i < WAITPID_CHILDREN;  i++)
-	{
-	  p = waited_pid[i];
-	  if (p && (p == pid || pid == -1))
-	    {
-	      waited_pid[i] = 0;
-	      goto success;
-	    }
-	}
-
-      /* The child has not returned yet; wait for it, accumulating status.  */
-      for (i = 0;  i < WAITPID_CHILDREN;  i++)
-	if (! waited_pid[i])
-	  {
-	    p = wait (&waited_status[i]);
-	    if (p < 0)
-	      return p;
-	    if (p == pid || pid == -1)
-	      goto success;
-	    waited_pid[i] = p;
-	  }
-    }
-
-  /* We cannot emulate this wait call, e.g. because of too many children.  */
-  errno = EINVAL;
-  return -1;
-
-success:
-  if (stat_loc)
-    *stat_loc = waited_status[i];
-  return p;
-}