Move regen scripts to regen/

Moves the various scripts that are called by regen.pl to a subdirectory
to reduce clutter.

1 files changed, 1149 insertions, 0 deletions

diff --git a/regen/reentr.pl b/regen/reentr.pl
new file mode 100644
index 0000000000..b43229663f
--- /dev/null
+++ b/regen/reentr.pl
@@ -0,0 +1,1149 @@
+#!/usr/bin/perl -w
+# 
+# Regenerate (overwriting only if changed):
+#
+#    reentr.h
+#    reentr.c
+#
+# from information stored in the DATA section of this file.
+#
+# With the -U option, it also unconditionally regenerates the relevant
+# metaconfig units:
+#
+#    d_${func}_r.U
+#
+# Also accepts the standard regen_lib -q and -v args.
+#
+# This script is normally invoked from regen.pl.
+
+BEGIN {
+    # Get function prototypes
+    require 'regen/regen_lib.pl';
+}
+
+use strict;
+use Getopt::Std;
+my %opts;
+getopts('Uv', \%opts);
+
+my %map = (
+	   V => "void",
+	   A => "char*",	# as an input argument
+	   B => "char*",	# as an output argument 
+	   C => "const char*",	# as a read-only input argument
+	   I => "int",
+	   L => "long",
+	   W => "size_t",
+	   H => "FILE**",
+	   E => "int*",
+	  );
+
+# (See the definitions after __DATA__.)
+# In func|inc|type|... a "S" means "type*", and a "R" means "type**".
+# (The "types" are often structs, such as "struct passwd".)
+#
+# After the prototypes one can have |X=...|Y=... to define more types.
+# A commonly used extra type is to define D to be equal to "type_data",
+# for example "struct_hostent_data to" go with "struct hostent".
+#
+# Example #1: I_XSBWR means int  func_r(X, type, char*, size_t, type**)
+# Example #2: S_SBIE  means type func_r(type, char*, int, int*)
+# Example #3: S_CBI   means type func_r(const char*, char*, int)
+
+
+# safer_unlink 'reentr.h';
+my $h = safer_open("reentr.h-new");
+select $h;
+print <<EOF;
+/* -*- buffer-read-only: t -*-
+ *
+ *    reentr.h
+ *
+ *    Copyright (C) 2002, 2003, 2005, 2006, 2007 by Larry Wall and others
+ *
+ *    You may distribute under the terms of either the GNU General Public
+ *    License or the Artistic License, as specified in the README file.
+ *
+ *  !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
+ *  This file is built by reentr.pl from data in reentr.pl.
+ */
+
+#ifndef REENTR_H
+#define REENTR_H
+
+/* If compiling for a threaded perl, we will macro-wrap the system/library
+ * interfaces (e.g. getpwent()) which have threaded versions
+ * (e.g. getpwent_r()), which will handle things correctly for
+ * the Perl interpreter, but otherwise (for XS) the wrapping does
+ * not take place.  See L<perlxs/Thread-aware system interfaces>.
+ */
+
+#ifndef PERL_REENTR_API
+# if defined(PERL_CORE) || defined(PERL_EXT)
+#  define PERL_REENTR_API 1
+# else
+#  define PERL_REENTR_API 0
+# endif
+#endif
+
+#ifdef USE_REENTRANT_API
+ 
+/* Deprecations: some platforms have the said reentrant interfaces
+ * but they are declared obsolete and are not to be used.  Often this
+ * means that the platform has threadsafed the interfaces (hopefully).
+ * All this is OS version dependent, so we are of course fooling ourselves.
+ * If you know of more deprecations on some platforms, please add your own
+ * (by editing reentr.pl, mind!) */
+
+#ifdef __hpux
+#   undef HAS_CRYPT_R
+#   undef HAS_DRAND48_R
+#   undef HAS_ENDGRENT_R
+#   undef HAS_ENDPWENT_R
+#   undef HAS_GETGRENT_R
+#   undef HAS_GETPWENT_R
+#   undef HAS_SETLOCALE_R
+#   undef HAS_SRAND48_R
+#   undef HAS_STRERROR_R
+#   define NETDB_R_OBSOLETE
+#endif
+
+#if defined(__osf__) && defined(__alpha) /* Tru64 aka Digital UNIX */
+#   undef HAS_CRYPT_R
+#   undef HAS_STRERROR_R
+#   define NETDB_R_OBSOLETE
+#endif
+
+/*
+ * As of OpenBSD 3.7, reentrant functions are now working, they just are
+ * incompatible with everyone else.  To make OpenBSD happy, we have to
+ * memzero out certain structures before calling the functions.
+ */
+#if defined(__OpenBSD__)
+#    define REENTR_MEMZERO(a,b) memzero(a,b)
+#else
+#    define REENTR_MEMZERO(a,b) 0
+#endif 
+
+#ifdef NETDB_R_OBSOLETE
+#   undef HAS_ENDHOSTENT_R
+#   undef HAS_ENDNETENT_R
+#   undef HAS_ENDPROTOENT_R
+#   undef HAS_ENDSERVENT_R
+#   undef HAS_GETHOSTBYADDR_R
+#   undef HAS_GETHOSTBYNAME_R
+#   undef HAS_GETHOSTENT_R
+#   undef HAS_GETNETBYADDR_R
+#   undef HAS_GETNETBYNAME_R
+#   undef HAS_GETNETENT_R
+#   undef HAS_GETPROTOBYNAME_R
+#   undef HAS_GETPROTOBYNUMBER_R
+#   undef HAS_GETPROTOENT_R
+#   undef HAS_GETSERVBYNAME_R
+#   undef HAS_GETSERVBYPORT_R
+#   undef HAS_GETSERVENT_R
+#   undef HAS_SETHOSTENT_R
+#   undef HAS_SETNETENT_R
+#   undef HAS_SETPROTOENT_R
+#   undef HAS_SETSERVENT_R
+#endif
+
+#ifdef I_PWD
+#   include <pwd.h>
+#endif
+#ifdef I_GRP
+#   include <grp.h>
+#endif
+#ifdef I_NETDB
+#   include <netdb.h>
+#endif
+#ifdef I_STDLIB
+#   include <stdlib.h>	/* drand48_data */
+#endif
+#ifdef I_CRYPT
+#   ifdef I_CRYPT
+#       include <crypt.h>
+#   endif
+#endif
+#ifdef HAS_GETSPNAM_R
+#   ifdef I_SHADOW
+#       include <shadow.h>
+#   endif
+#endif
+
+EOF
+
+my %seenh; # the different prototypes signatures for this function
+my %seena; # the different prototypes signatures for this function in order
+my @seenf; # all the seen functions
+my %seenp; # the different prototype signatures for all functions
+my %seent; # the return type of this function
+my %seens; # the type of this function's "S"
+my %seend; # the type of this function's "D"
+my %seenm; # all the types
+my %seenu; # the length of the argument list of this function
+
+while (<DATA>) { # Read in the protypes.
+    next if /^\s+$/;
+    chomp;
+    my ($func, $hdr, $type, @p) = split(/\s*\|\s*/, $_, -1);
+    my $u;
+    # Split off the real function name and the argument list.
+    ($func, $u) = split(' ', $func);
+    $seenu{$func} = defined $u ? length $u : 0;
+    my $FUNC = uc $func; # for output.
+    push @seenf, $func;
+    my %m = %map;
+    if ($type) {
+	$m{S} = "$type*";
+	$m{R} = "$type**";
+    }
+
+    # Set any special mapping variables (like X=x_t)
+    if (@p) {
+	while ($p[-1] =~ /=/) {
+	    my ($k, $v) = ($p[-1] =~ /^([A-Za-z])\s*=\s*(.*)/);
+	    $m{$k} = $v;
+	    pop @p;
+	}
+    }
+
+    # If given the -U option open up the metaconfig unit for this function.
+    if ($opts{U} && open(U, ">d_${func}_r.U"))  {
+    	binmode U;
+	select U;
+    }
+
+    if ($opts{U}) {
+	# The metaconfig units needs prerequisite dependencies.
+	my $prereqs  = '';
+	my $prereqh  = '';
+	my $prereqsh = '';
+	if ($hdr ne 'stdio') { # There's no i_stdio.
+	    $prereqs  = "i_$hdr";
+	    $prereqh  = "$hdr.h";
+	    $prereqsh = "\$$prereqs $prereqh";
+	}
+	my @prereq = qw(Inlibc Protochk Hasproto i_systypes usethreads);
+	push @prereq, $prereqs;
+        my $hdrs = "\$i_systypes sys/types.h define stdio.h $prereqsh";
+        if ($hdr eq 'time') {
+	    $hdrs .= " \$i_systime sys/time.h";
+	    push @prereq, 'i_systime';
+	}
+	# Output the metaconfig unit header.
+	print <<EOF;
+?RCS: \$Id: d_${func}_r.U,v $
+?RCS:
+?RCS: Copyright (c) 2002,2003 Jarkko Hietaniemi
+?RCS:
+?RCS: You may distribute under the terms of either the GNU General Public
+?RCS: License or the Artistic License, as specified in the README file.
+?RCS:
+?RCS: Generated by the reentr.pl from the Perl 5.8 distribution.
+?RCS:
+?MAKE:d_${func}_r ${func}_r_proto: @prereq
+?MAKE:	-pick add \$@ %<
+?S:d_${func}_r:
+?S:	This variable conditionally defines the HAS_${FUNC}_R symbol,
+?S:	which indicates to the C program that the ${func}_r()
+?S:	routine is available.
+?S:.
+?S:${func}_r_proto:
+?S:	This variable encodes the prototype of ${func}_r.
+?S:	It is zero if d_${func}_r is undef, and one of the
+?S:	REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
+?S:	is defined.
+?S:.
+?C:HAS_${FUNC}_R:
+?C:	This symbol, if defined, indicates that the ${func}_r routine
+?C:	is available to ${func} re-entrantly.
+?C:.
+?C:${FUNC}_R_PROTO:
+?C:	This symbol encodes the prototype of ${func}_r.
+?C:	It is zero if d_${func}_r is undef, and one of the
+?C:	REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
+?C:	is defined.
+?C:.
+?H:#\$d_${func}_r HAS_${FUNC}_R	   /**/
+?H:#define ${FUNC}_R_PROTO \$${func}_r_proto	   /**/
+?H:.
+?T:try hdrs d_${func}_r_proto
+?LINT:set d_${func}_r
+?LINT:set ${func}_r_proto
+: see if ${func}_r exists
+set ${func}_r d_${func}_r
+eval \$inlibc
+case "\$d_${func}_r" in
+"\$define")
+EOF
+	print <<EOF;
+	hdrs="$hdrs"
+	case "\$d_${func}_r_proto:\$usethreads" in
+	":define")	d_${func}_r_proto=define
+		set d_${func}_r_proto ${func}_r \$hdrs
+		eval \$hasproto ;;
+	*)	;;
+	esac
+	case "\$d_${func}_r_proto" in
+	define)
+EOF
+    }
+    for my $p (@p) {
+        my ($r, $a) = ($p =~ /^(.)_(.+)/);
+	my $v = join(", ", map { $m{$_} } split '', $a);
+	if ($opts{U}) {
+	    print <<EOF ;
+	case "\$${func}_r_proto" in
+	''|0) try='$m{$r} ${func}_r($v);'
+	./protochk "extern \$try" \$hdrs && ${func}_r_proto=$p ;;
+	esac
+EOF
+        }
+        $seenh{$func}->{$p}++;
+        push @{$seena{$func}}, $p;
+        $seenp{$p}++;
+        $seent{$func} = $type;
+        $seens{$func} = $m{S};
+        $seend{$func} = $m{D};
+	$seenm{$func} = \%m;
+    }
+    if ($opts{U}) {
+	print <<EOF;
+	case "\$${func}_r_proto" in
+	''|0)	d_${func}_r=undef
+ 	        ${func}_r_proto=0
+		echo "Disabling ${func}_r, cannot determine prototype." >&4 ;;
+	* )	case "\$${func}_r_proto" in
+		REENTRANT_PROTO*) ;;
+		*) ${func}_r_proto="REENTRANT_PROTO_\$${func}_r_proto" ;;
+		esac
+		echo "Prototype: \$try" ;;
+	esac
+	;;
+	*)	case "\$usethreads" in
+		define) echo "${func}_r has no prototype, not using it." >&4 ;;
+		esac
+		d_${func}_r=undef
+		${func}_r_proto=0
+		;;
+	esac
+	;;
+*)	${func}_r_proto=0
+	;;
+esac
+
+EOF
+	close(U);		    
+    }
+}
+
+close DATA;
+
+# Prepare to continue writing the reentr.h.
+
+select $h;
+
+{
+    # Write out all the known prototype signatures.
+    my $i = 1;
+    for my $p (sort keys %seenp) {
+	print "#define REENTRANT_PROTO_${p}	${i}\n";
+	$i++;
+    }
+}
+
+my @struct; # REENTR struct members
+my @size;   # struct member buffer size initialization code
+my @init;   # struct member buffer initialization (malloc) code
+my @free;   # struct member buffer release (free) code
+my @wrap;   # the wrapper (foo(a) -> foo_r(a,...)) cpp code
+my @define; # defines for optional features
+
+sub ifprotomatch {
+    my $FUNC = shift;
+    join " || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @_;
+}
+
+sub pushssif {
+    push @struct, @_;
+    push @size, @_;
+    push @init, @_;
+    push @free, @_;
+}
+
+sub pushinitfree {
+    my $func = shift;
+    push @init, <<EOF;
+	Newx(PL_reentrant_buffer->_${func}_buffer, PL_reentrant_buffer->_${func}_size, char);
+EOF
+    push @free, <<EOF;
+	Safefree(PL_reentrant_buffer->_${func}_buffer);
+EOF
+}
+
+sub define {
+    my ($n, $p, @F) = @_;
+    my @H;
+    my $H = uc $F[0];
+    push @define, <<EOF;
+/* The @F using \L$n? */
+
+EOF
+    my $GENFUNC;
+    for my $func (@F) {
+	my $FUNC = uc $func;
+	my $HAS = "${FUNC}_R_HAS_$n";
+	push @H, $HAS;
+	my @h = grep { /$p/ } @{$seena{$func}};
+	unless (defined $GENFUNC) {
+	    $GENFUNC = $FUNC;
+	    $GENFUNC =~ s/^GET//;
+	}
+	if (@h) {
+	    push @define, "#if defined(HAS_${FUNC}_R) && (" . join(" || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @h) . ")\n";
+
+	    push @define, <<EOF;
+#   define $HAS
+#else
+#   undef  $HAS
+#endif
+EOF
+        }
+    }
+    return if @F == 1;
+    push @define, <<EOF;
+
+/* Any of the @F using \L$n? */
+
+EOF
+    push @define, "#if (" . join(" || ", map { "defined($_)" } @H) . ")\n";
+    push @define, <<EOF;
+#   define USE_${GENFUNC}_$n
+#else
+#   undef  USE_${GENFUNC}_$n
+#endif
+
+EOF
+}
+
+define('BUFFER',  'B',
+       qw(getgrent getgrgid getgrnam));
+
+define('PTR',  'R',
+       qw(getgrent getgrgid getgrnam));
+define('PTR',  'R',
+       qw(getpwent getpwnam getpwuid));
+define('PTR',  'R',
+       qw(getspent getspnam));
+
+define('FPTR', 'H',
+       qw(getgrent getgrgid getgrnam setgrent endgrent));
+define('FPTR', 'H',
+       qw(getpwent getpwnam getpwuid setpwent endpwent));
+
+define('BUFFER',  'B',
+       qw(getpwent getpwgid getpwnam));
+
+define('PTR', 'R',
+       qw(gethostent gethostbyaddr gethostbyname));
+define('PTR', 'R',
+       qw(getnetent getnetbyaddr getnetbyname));
+define('PTR', 'R',
+       qw(getprotoent getprotobyname getprotobynumber));
+define('PTR', 'R',
+       qw(getservent getservbyname getservbyport));
+
+define('BUFFER', 'B',
+       qw(gethostent gethostbyaddr gethostbyname));
+define('BUFFER', 'B',
+       qw(getnetent getnetbyaddr getnetbyname));
+define('BUFFER', 'B',
+       qw(getprotoent getprotobyname getprotobynumber));
+define('BUFFER', 'B',
+       qw(getservent getservbyname getservbyport));
+
+define('ERRNO', 'E',
+       qw(gethostent gethostbyaddr gethostbyname));
+define('ERRNO', 'E',
+       qw(getnetent getnetbyaddr getnetbyname));
+
+# The following loop accumulates the "ssif" (struct, size, init, free)
+# sections that declare the struct members (in reentr.h), and the buffer
+# size initialization, buffer initialization (malloc), and buffer
+# release (free) code (in reentr.c).
+#
+# The loop also contains a lot of intrinsic logic about groups of
+# functions (since functions of certain kind operate the same way).
+
+for my $func (@seenf) {
+    my $FUNC = uc $func;
+    my $ifdef = "#ifdef HAS_${FUNC}_R\n";
+    my $endif = "#endif /* HAS_${FUNC}_R */\n";
+    if (exists $seena{$func}) {
+	my @p = @{$seena{$func}};
+	if ($func =~ /^(asctime|ctime|getlogin|setlocale|strerror|ttyname)$/) {
+	    pushssif $ifdef;
+	    push @struct, <<EOF;
+	char*	_${func}_buffer;
+	size_t	_${func}_size;
+EOF
+	    push @size, <<EOF;
+	PL_reentrant_buffer->_${func}_size = REENTRANTSMALLSIZE;
+EOF
+	    pushinitfree $func;
+	    pushssif $endif;
+	}
+        elsif ($func =~ /^(crypt)$/) {
+	    pushssif $ifdef;
+	    push @struct, <<EOF;
+#if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD
+	$seend{$func} _${func}_data;
+#else
+	$seent{$func} *_${func}_struct_buffer;
+#endif
+EOF
+    	    push @init, <<EOF;
+#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
+	PL_reentrant_buffer->_${func}_struct_buffer = 0;
+#endif
+EOF
+    	    push @free, <<EOF;
+#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
+	Safefree(PL_reentrant_buffer->_${func}_struct_buffer);
+#endif
+EOF
+	    pushssif $endif;
+	}
+        elsif ($func =~ /^(drand48|random|srandom)$/) {
+	    pushssif $ifdef;
+	    push @struct, <<EOF;
+	$seent{$func} _${func}_struct;
+EOF
+	    if ($1 eq 'drand48') {
+	        push @struct, <<EOF;
+	double	_${func}_double;
+EOF
+	    } elsif ($1 eq 'random') {
+	    push @struct, <<EOF;
+#   if RANDOM_R_PROTO == REENTRANT_PROTO_I_iS
+	int	_${func}_retval;
+#   endif
+#   if RANDOM_R_PROTO == REENTRANT_PROTO_I_lS
+	long	_${func}_retval;
+#   endif
+#   if RANDOM_R_PROTO == REENTRANT_PROTO_I_St
+	int32_t	_${func}_retval;
+#   endif
+EOF
+	    }
+	    pushssif $endif;
+	}
+        elsif ($func =~ /^(getgrnam|getpwnam|getspnam)$/) {
+	    pushssif $ifdef;
+	    # 'genfunc' can be read either as 'generic' or 'genre',
+	    # it represents a group of functions.
+	    my $genfunc = $func;
+	    $genfunc =~ s/nam/ent/g;
+	    $genfunc =~ s/^get//;
+	    my $GENFUNC = uc $genfunc;
+	    push @struct, <<EOF;
+	$seent{$func}	_${genfunc}_struct;
+	char*	_${genfunc}_buffer;
+	size_t	_${genfunc}_size;
+EOF
+            push @struct, <<EOF;
+#   ifdef USE_${GENFUNC}_PTR
+	$seent{$func}*	_${genfunc}_ptr;
+#   endif
+EOF
+	    push @struct, <<EOF;
+#   ifdef USE_${GENFUNC}_FPTR
+	FILE*	_${genfunc}_fptr;
+#   endif
+EOF
+	    push @init, <<EOF;
+#   ifdef USE_${GENFUNC}_FPTR
+	PL_reentrant_buffer->_${genfunc}_fptr = NULL;
+#   endif
+EOF
+	    my $sc = $genfunc eq 'grent' ?
+		    '_SC_GETGR_R_SIZE_MAX' : '_SC_GETPW_R_SIZE_MAX';
+	    my $sz = "_${genfunc}_size";
+	    push @size, <<EOF;
+#   if defined(HAS_SYSCONF) && defined($sc) && !defined(__GLIBC__)
+	PL_reentrant_buffer->$sz = sysconf($sc);
+	if (PL_reentrant_buffer->$sz == (size_t) -1)
+		PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
+#   else
+#       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
+	PL_reentrant_buffer->$sz = SIABUFSIZ;
+#       else
+#           ifdef __sgi
+	PL_reentrant_buffer->$sz = BUFSIZ;
+#           else
+	PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
+#           endif
+#       endif
+#   endif 
+EOF
+	    pushinitfree $genfunc;
+	    pushssif $endif;
+	}
+        elsif ($func =~ /^(gethostbyname|getnetbyname|getservbyname|getprotobyname)$/) {
+	    pushssif $ifdef;
+	    my $genfunc = $func;
+	    $genfunc =~ s/byname/ent/;
+	    $genfunc =~ s/^get//;
+	    my $GENFUNC = uc $genfunc;
+	    my $D = ifprotomatch($FUNC, grep {/D/} @p);
+	    my $d = $seend{$func};
+	    $d =~ s/\*$//; # snip: we need need the base type.
+	    push @struct, <<EOF;
+	$seent{$func}	_${genfunc}_struct;
+#   if $D
+	$d	_${genfunc}_data;
+#   else
+	char*	_${genfunc}_buffer;
+	size_t	_${genfunc}_size;
+#   endif
+#   ifdef USE_${GENFUNC}_PTR
+	$seent{$func}*	_${genfunc}_ptr;
+#   endif
+EOF
+    	    push @struct, <<EOF;
+#   ifdef USE_${GENFUNC}_ERRNO
+	int	_${genfunc}_errno;
+#   endif 
+EOF
+	    push @size, <<EOF;
+#if   !($D)
+	PL_reentrant_buffer->_${genfunc}_size = REENTRANTUSUALSIZE;
+#endif
+EOF
+	    push @init, <<EOF;
+#if   !($D)
+	Newx(PL_reentrant_buffer->_${genfunc}_buffer, PL_reentrant_buffer->_${genfunc}_size, char);
+#endif
+EOF
+	    push @free, <<EOF;
+#if   !($D)
+	Safefree(PL_reentrant_buffer->_${genfunc}_buffer);
+#endif
+EOF
+	    pushssif $endif;
+	}
+        elsif ($func =~ /^(readdir|readdir64)$/) {
+	    pushssif $ifdef;
+	    my $R = ifprotomatch($FUNC, grep {/R/} @p);
+	    push @struct, <<EOF;
+	$seent{$func}*	_${func}_struct;
+	size_t	_${func}_size;
+#   if $R
+	$seent{$func}*	_${func}_ptr;
+#   endif
+EOF
+	    push @size, <<EOF;
+	/* This is the size Solaris recommends.
+	 * (though we go static, should use pathconf() instead) */
+	PL_reentrant_buffer->_${func}_size = sizeof($seent{$func}) + MAXPATHLEN + 1;
+EOF
+    	    push @init, <<EOF;
+	PL_reentrant_buffer->_${func}_struct = ($seent{$func}*)safemalloc(PL_reentrant_buffer->_${func}_size);
+EOF
+	    push @free, <<EOF;
+	Safefree(PL_reentrant_buffer->_${func}_struct);
+EOF
+	    pushssif $endif;
+	}
+
+	push @wrap, $ifdef;
+
+	push @wrap, <<EOF;
+#  if defined(PERL_REENTR_API) && (PERL_REENTR_API+0 == 1)
+#   undef $func
+EOF
+
+        # Write out what we have learned.
+	
+        my @v = 'a'..'z';
+        my $v = join(", ", @v[0..$seenu{$func}-1]);
+	for my $p (@p) {
+	    my ($r, $a) = split '_', $p;
+	    my $test = $r eq 'I' ? ' == 0' : '';
+	    my $true  = 1;
+	    my $genfunc = $func;
+	    if ($genfunc =~ /^(?:get|set|end)(pw|gr|host|net|proto|serv|sp)/) {
+		$genfunc = "${1}ent";
+	    } elsif ($genfunc eq 'srand48') {
+		$genfunc = "drand48";
+	    }
+	    my $b = $a;
+	    my $w = '';
+	    substr($b, 0, $seenu{$func}) = '';
+	    if ($func =~ /^random$/) {
+		$true = "PL_reentrant_buffer->_random_retval";
+	    } elsif ($b =~ /R/) {
+		$true = "PL_reentrant_buffer->_${genfunc}_ptr";
+	    } elsif ($b =~ /T/ && $func eq 'drand48') {
+		$true = "PL_reentrant_buffer->_${genfunc}_double";
+	    } elsif ($b =~ /S/) {
+		if ($func =~ /^readdir/) {
+		    $true = "PL_reentrant_buffer->_${genfunc}_struct";
+		} else {
+		    $true = "&PL_reentrant_buffer->_${genfunc}_struct";
+		}
+	    } elsif ($b =~ /B/) {
+		$true = "PL_reentrant_buffer->_${genfunc}_buffer";
+	    }
+	    if (length $b) {
+		$w = join ", ",
+		         map {
+			     $_ eq 'R' ?
+				 "&PL_reentrant_buffer->_${genfunc}_ptr" :
+			     $_ eq 'E' ?
+				 "&PL_reentrant_buffer->_${genfunc}_errno" :
+			     $_ eq 'B' ?
+				 "PL_reentrant_buffer->_${genfunc}_buffer" :
+			     $_ =~ /^[WI]$/ ?
+				 "PL_reentrant_buffer->_${genfunc}_size" :
+			     $_ eq 'H' ?
+				 "&PL_reentrant_buffer->_${genfunc}_fptr" :
+			     $_ eq 'D' ?
+				 "&PL_reentrant_buffer->_${genfunc}_data" :
+			     $_ eq 'S' ?
+				 ($func =~ /^readdir\d*$/ ?
+				  "PL_reentrant_buffer->_${genfunc}_struct" :
+				  $func =~ /^crypt$/ ?
+				  "PL_reentrant_buffer->_${genfunc}_struct_buffer" :
+				  "&PL_reentrant_buffer->_${genfunc}_struct") :
+			     $_ eq 'T' && $func eq 'drand48' ?
+				 "&PL_reentrant_buffer->_${genfunc}_double" :
+			     $_ =~ /^[ilt]$/ && $func eq 'random' ?
+				 "&PL_reentrant_buffer->_random_retval" :
+				 $_
+			 } split '', $b;
+		$w = ", $w" if length $v;
+	    }
+
+	    my $call = "${func}_r($v$w)";
+
+            # Must make OpenBSD happy
+            my $memzero = '';
+            if($p =~ /D$/ &&
+                ($genfunc eq 'protoent' || $genfunc eq 'servent')) {
+                $memzero = 'REENTR_MEMZERO(&PL_reentrant_buffer->_' . $genfunc . '_data, sizeof(PL_reentrant_buffer->_' . $genfunc . '_data)),';
+            }
+	    push @wrap, <<EOF;
+#   if !defined($func) && ${FUNC}_R_PROTO == REENTRANT_PROTO_$p
+EOF
+	    if ($r eq 'V' || $r eq 'B') {
+	        push @wrap, <<EOF;
+#       define $func($v) $call
+EOF
+	    } else {
+		if ($func =~ /^get/) {
+		    my $rv = $v ? ", $v" : "";
+		    if ($r eq 'I') {
+			push @wrap, <<EOF;
+#       define $func($v) ($memzero(PL_reentrant_retint = $call)$test ? $true : ((PL_reentrant_retint == ERANGE) ? ($seent{$func} *) Perl_reentrant_retry("$func"$rv) : 0))
+EOF
+		    } else {
+			push @wrap, <<EOF;
+#       define $func($v) ($call$test ? $true : ((errno == ERANGE) ? ($seent{$func} *) Perl_reentrant_retry("$func"$rv) : 0))
+EOF
+                    }
+		} else {
+		    push @wrap, <<EOF;
+#       define $func($v) ($call$test ? $true : 0)
+EOF
+		}
+	    }
+	    push @wrap, <<EOF;  # !defined(xxx) && XXX_R_PROTO == REENTRANT_PROTO_Y_TS
+#   endif
+EOF
+	}
+
+	    push @wrap, <<EOF;  # defined(PERL_REENTR_API) && (PERL_REENTR_API+0 == 1)
+#  endif
+EOF
+
+	push @wrap, $endif, "\n";
+    }
+}
+
+local $" = '';
+
+print <<EOF;
+
+/* Defines for indicating which special features are supported. */
+
+@define
+typedef struct {
+@struct
+    int dummy; /* cannot have empty structs */
+} REENTR;
+
+/* The wrappers. */
+
+@wrap
+
+#endif /* USE_REENTRANT_API */
+ 
+#endif
+
+/* ex: set ro: */
+EOF
+
+safer_close($h);
+rename_if_different('reentr.h-new', 'reentr.h');
+
+# Prepare to write the reentr.c.
+
+# safer_unlink 'reentr.c';
+my $c = safer_open("reentr.c-new");
+select $c;
+print <<EOF;
+/* -*- buffer-read-only: t -*-
+ *
+ *    reentr.c
+ *
+ *    Copyright (C) 2002, 2003, 2005, 2006, 2007 by Larry Wall and others
+ *
+ *    You may distribute under the terms of either the GNU General Public
+ *    License or the Artistic License, as specified in the README file.
+ *
+ *  !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
+ *  This file is built by reentr.pl from data in reentr.pl.
+ *
+ * "Saruman," I said, standing away from him, "only one hand at a time can
+ *  wield the One, and you know that well, so do not trouble to say we!"
+ *
+ * This file contains a collection of automatically created wrappers
+ * (created by running reentr.pl) for reentrant (thread-safe) versions of
+ * various library calls, such as getpwent_r.  The wrapping is done so
+ * that other files like pp_sys.c calling those library functions need not
+ * care about the differences between various platforms' idiosyncrasies
+ * regarding these reentrant interfaces.  
+ */
+
+#include "EXTERN.h"
+#define PERL_IN_REENTR_C
+#include "perl.h"
+#include "reentr.h"
+
+void
+Perl_reentrant_size(pTHX) {
+#ifdef USE_REENTRANT_API
+#define REENTRANTSMALLSIZE	 256	/* Make something up. */
+#define REENTRANTUSUALSIZE	4096	/* Make something up. */
+@size
+#endif /* USE_REENTRANT_API */
+}
+
+void
+Perl_reentrant_init(pTHX) {
+#ifdef USE_REENTRANT_API
+	Newx(PL_reentrant_buffer, 1, REENTR);
+	Perl_reentrant_size(aTHX);
+@init
+#endif /* USE_REENTRANT_API */
+}
+
+void
+Perl_reentrant_free(pTHX) {
+#ifdef USE_REENTRANT_API
+@free
+	Safefree(PL_reentrant_buffer);
+#endif /* USE_REENTRANT_API */
+}
+
+void*
+Perl_reentrant_retry(const char *f, ...)
+{
+    dTHX;
+    void *retptr = NULL;
+    va_list ap;
+#ifdef USE_REENTRANT_API
+    /* Easier to special case this here than in embed.pl. (Look at what it
+       generates for proto.h) */
+    PERL_ARGS_ASSERT_REENTRANT_RETRY;
+#endif
+    va_start(ap, f);
+    {
+#ifdef USE_REENTRANT_API
+#  if defined(USE_HOSTENT_BUFFER) || defined(USE_GRENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PWENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
+    void *p0;
+#  endif
+#  if defined(USE_SERVENT_BUFFER)
+    void *p1;
+#  endif
+#  if defined(USE_HOSTENT_BUFFER)
+    size_t asize;
+#  endif
+#  if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
+    int anint;
+#  endif
+
+    switch (PL_op->op_type) {
+#ifdef USE_HOSTENT_BUFFER
+    case OP_GHBYADDR:
+    case OP_GHBYNAME:
+    case OP_GHOSTENT:
+	{
+#ifdef PERL_REENTRANT_MAXSIZE
+	    if (PL_reentrant_buffer->_hostent_size <=
+		PERL_REENTRANT_MAXSIZE / 2)
+#endif
+	    {
+		PL_reentrant_buffer->_hostent_size *= 2;
+		Renew(PL_reentrant_buffer->_hostent_buffer,
+		      PL_reentrant_buffer->_hostent_size, char);
+		switch (PL_op->op_type) {
+	        case OP_GHBYADDR:
+		    p0    = va_arg(ap, void *);
+		    asize = va_arg(ap, size_t);
+		    anint  = va_arg(ap, int);
+		    retptr = gethostbyaddr(p0, asize, anint); break;
+	        case OP_GHBYNAME:
+		    p0 = va_arg(ap, void *);
+		    retptr = gethostbyname((char *)p0); break;
+	        case OP_GHOSTENT:
+		    retptr = gethostent(); break;
+	        default:
+		    SETERRNO(ERANGE, LIB_INVARG);
+		    break;
+	        }
+	    }
+	}
+	break;
+#endif
+#ifdef USE_GRENT_BUFFER
+    case OP_GGRNAM:
+    case OP_GGRGID:
+    case OP_GGRENT:
+	{
+#ifdef PERL_REENTRANT_MAXSIZE
+	    if (PL_reentrant_buffer->_grent_size <=
+		PERL_REENTRANT_MAXSIZE / 2)
+#endif
+	    {
+		Gid_t gid;
+		PL_reentrant_buffer->_grent_size *= 2;
+		Renew(PL_reentrant_buffer->_grent_buffer,
+		      PL_reentrant_buffer->_grent_size, char);
+		switch (PL_op->op_type) {
+	        case OP_GGRNAM:
+		    p0 = va_arg(ap, void *);
+		    retptr = getgrnam((char *)p0); break;
+	        case OP_GGRGID:
+#if Gid_t_size < INTSIZE
+		    gid = (Gid_t)va_arg(ap, int);
+#else
+		    gid = va_arg(ap, Gid_t);
+#endif
+		    retptr = getgrgid(gid); break;
+	        case OP_GGRENT:
+		    retptr = getgrent(); break;
+	        default:
+		    SETERRNO(ERANGE, LIB_INVARG);
+		    break;
+	        }
+	    }
+	}
+	break;
+#endif
+#ifdef USE_NETENT_BUFFER
+    case OP_GNBYADDR:
+    case OP_GNBYNAME:
+    case OP_GNETENT:
+	{
+#ifdef PERL_REENTRANT_MAXSIZE
+	    if (PL_reentrant_buffer->_netent_size <=
+		PERL_REENTRANT_MAXSIZE / 2)
+#endif
+	    {
+		Netdb_net_t net;
+		PL_reentrant_buffer->_netent_size *= 2;
+		Renew(PL_reentrant_buffer->_netent_buffer,
+		      PL_reentrant_buffer->_netent_size, char);
+		switch (PL_op->op_type) {
+	        case OP_GNBYADDR:
+		    net = va_arg(ap, Netdb_net_t);
+		    anint = va_arg(ap, int);
+		    retptr = getnetbyaddr(net, anint); break;
+	        case OP_GNBYNAME:
+		    p0 = va_arg(ap, void *);
+		    retptr = getnetbyname((char *)p0); break;
+	        case OP_GNETENT:
+		    retptr = getnetent(); break;
+	        default:
+		    SETERRNO(ERANGE, LIB_INVARG);
+		    break;
+	        }
+	    }
+	}
+	break;
+#endif
+#ifdef USE_PWENT_BUFFER
+    case OP_GPWNAM:
+    case OP_GPWUID:
+    case OP_GPWENT:
+	{
+#ifdef PERL_REENTRANT_MAXSIZE
+	    if (PL_reentrant_buffer->_pwent_size <=
+		PERL_REENTRANT_MAXSIZE / 2)
+#endif
+	    {
+		Uid_t uid;
+		PL_reentrant_buffer->_pwent_size *= 2;
+		Renew(PL_reentrant_buffer->_pwent_buffer,
+		      PL_reentrant_buffer->_pwent_size, char);
+		switch (PL_op->op_type) {
+	        case OP_GPWNAM:
+		    p0 = va_arg(ap, void *);
+		    retptr = getpwnam((char *)p0); break;
+	        case OP_GPWUID:
+#if Uid_t_size < INTSIZE
+		    uid = (Uid_t)va_arg(ap, int);
+#else
+		    uid = va_arg(ap, Uid_t);
+#endif
+		    retptr = getpwuid(uid); break;
+	        case OP_GPWENT:
+		    retptr = getpwent(); break;
+	        default:
+		    SETERRNO(ERANGE, LIB_INVARG);
+		    break;
+	        }
+	    }
+	}
+	break;
+#endif
+#ifdef USE_PROTOENT_BUFFER
+    case OP_GPBYNAME:
+    case OP_GPBYNUMBER:
+    case OP_GPROTOENT:
+	{
+#ifdef PERL_REENTRANT_MAXSIZE
+	    if (PL_reentrant_buffer->_protoent_size <=
+		PERL_REENTRANT_MAXSIZE / 2)
+#endif
+	    {
+		PL_reentrant_buffer->_protoent_size *= 2;
+		Renew(PL_reentrant_buffer->_protoent_buffer,
+		      PL_reentrant_buffer->_protoent_size, char);
+		switch (PL_op->op_type) {
+	        case OP_GPBYNAME:
+		    p0 = va_arg(ap, void *);
+		    retptr = getprotobyname((char *)p0); break;
+	        case OP_GPBYNUMBER:
+		    anint = va_arg(ap, int);
+		    retptr = getprotobynumber(anint); break;
+	        case OP_GPROTOENT:
+		    retptr = getprotoent(); break;
+	        default:
+		    SETERRNO(ERANGE, LIB_INVARG);
+		    break;
+	        }
+	    }
+	}
+	break;
+#endif
+#ifdef USE_SERVENT_BUFFER
+    case OP_GSBYNAME:
+    case OP_GSBYPORT:
+    case OP_GSERVENT:
+	{
+#ifdef PERL_REENTRANT_MAXSIZE
+	    if (PL_reentrant_buffer->_servent_size <=
+		PERL_REENTRANT_MAXSIZE / 2)
+#endif
+	    {
+		PL_reentrant_buffer->_servent_size *= 2;
+		Renew(PL_reentrant_buffer->_servent_buffer,
+		      PL_reentrant_buffer->_servent_size, char);
+		switch (PL_op->op_type) {
+	        case OP_GSBYNAME:
+		    p0 = va_arg(ap, void *);
+		    p1 = va_arg(ap, void *);
+		    retptr = getservbyname((char *)p0, (char *)p1); break;
+	        case OP_GSBYPORT:
+		    anint = va_arg(ap, int);
+		    p0 = va_arg(ap, void *);
+		    retptr = getservbyport(anint, (char *)p0); break;
+	        case OP_GSERVENT:
+		    retptr = getservent(); break;
+	        default:
+		    SETERRNO(ERANGE, LIB_INVARG);
+		    break;
+	        }
+	    }
+	}
+	break;
+#endif
+    default:
+	/* Not known how to retry, so just fail. */
+	break;
+    }
+#else
+    PERL_UNUSED_ARG(f);
+#endif
+    }
+    va_end(ap);
+    return retptr;
+}
+
+/* ex: set ro: */
+EOF
+
+safer_close($c);
+rename_if_different('reentr.c-new', 'reentr.c');
+
+__DATA__
+asctime S	|time	|const struct tm|B_SB|B_SBI|I_SB|I_SBI
+crypt CC	|crypt	|struct crypt_data|B_CCS|B_CCD|D=CRYPTD*
+ctermid	B	|stdio	|		|B_B
+ctime S		|time	|const time_t	|B_SB|B_SBI|I_SB|I_SBI
+drand48		|stdlib	|struct drand48_data	|I_ST|T=double*
+endgrent	|grp	|		|I_H|V_H
+endhostent	|netdb	|		|I_D|V_D|D=struct hostent_data*
+endnetent	|netdb	|		|I_D|V_D|D=struct netent_data*
+endprotoent	|netdb	|		|I_D|V_D|D=struct protoent_data*
+endpwent	|pwd	|		|I_H|V_H
+endservent	|netdb	|		|I_D|V_D|D=struct servent_data*
+getgrent	|grp	|struct group	|I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
+getgrgid T	|grp	|struct group	|I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=gid_t
+getgrnam C	|grp	|struct group	|I_CSBWR|I_CSBIR|S_CBI|I_CSBI|S_CSBI
+gethostbyaddr CWI	|netdb	|struct hostent	|I_CWISBWRE|S_CWISBWIE|S_CWISBIE|S_TWISBIE|S_CIISBIE|S_CSBIE|S_TSBIE|I_CWISD|I_CIISD|I_CII|I_TsISBWRE|D=struct hostent_data*|T=const void*|s=socklen_t
+gethostbyname C	|netdb	|struct hostent	|I_CSBWRE|S_CSBIE|I_CSD|D=struct hostent_data*
+gethostent	|netdb	|struct hostent	|I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct hostent_data*
+getlogin	|unistd	|char		|I_BW|I_BI|B_BW|B_BI
+getnetbyaddr LI	|netdb	|struct netent	|I_UISBWRE|I_LISBI|S_TISBI|S_LISBI|I_TISD|I_LISD|I_IISD|I_uISBWRE|D=struct netent_data*|T=in_addr_t|U=unsigned long|u=uint32_t
+getnetbyname C	|netdb	|struct netent	|I_CSBWRE|I_CSBI|S_CSBI|I_CSD|D=struct netent_data*
+getnetent	|netdb	|struct netent	|I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct netent_data*
+getprotobyname C|netdb	|struct protoent|I_CSBWR|S_CSBI|I_CSD|D=struct protoent_data*
+getprotobynumber I	|netdb	|struct protoent|I_ISBWR|S_ISBI|I_ISD|D=struct protoent_data*
+getprotoent	|netdb	|struct protoent|I_SBWR|I_SBI|S_SBI|I_SD|D=struct protoent_data*
+getpwent	|pwd	|struct passwd	|I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
+getpwnam C	|pwd	|struct passwd	|I_CSBWR|I_CSBIR|S_CSBI|I_CSBI
+getpwuid T	|pwd	|struct passwd	|I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=uid_t
+getservbyname CC|netdb	|struct servent	|I_CCSBWR|S_CCSBI|I_CCSD|D=struct servent_data*
+getservbyport IC|netdb	|struct servent	|I_ICSBWR|S_ICSBI|I_ICSD|D=struct servent_data*
+getservent	|netdb	|struct servent	|I_SBWR|I_SBI|S_SBI|I_SD|D=struct servent_data*
+getspnam C	|shadow	|struct spwd	|I_CSBWR|S_CSBI
+random		|stdlib	|struct random_data|I_iS|I_lS|I_St|i=int*|l=long*|t=int32_t*
+readdir T	|dirent	|struct dirent	|I_TSR|I_TS|T=DIR*
+readdir64 T	|dirent	|struct dirent64|I_TSR|I_TS|T=DIR*
+setgrent	|grp	|		|I_H|V_H
+sethostent I	|netdb	|		|I_ID|V_ID|D=struct hostent_data*
+setlocale IC	|locale	|		|I_ICBI
+setnetent I	|netdb	|		|I_ID|V_ID|D=struct netent_data*
+setprotoent I	|netdb	|		|I_ID|V_ID|D=struct protoent_data*
+setpwent	|pwd	|		|I_H|V_H
+setservent I	|netdb	|		|I_ID|V_ID|D=struct servent_data*
+srand48 L	|stdlib	|struct drand48_data	|I_LS
+srandom	T	|stdlib	|struct random_data|I_TS|T=unsigned int
+strerror I	|string	|		|I_IBW|I_IBI|B_IBW
+tmpnam B	|stdio	|		|B_B
+ttyname	I	|unistd	|		|I_IBW|I_IBI|B_IBI