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<xfix> tar xf perl-5.22.2.tar.gz # Ah, whatever, I\'m doing it anyway
author HackBot
date Sat, 14 May 2016 14:54:38 +0000
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8044:711c038a7dce 8045:a16537d2fe07
1 #!/usr/bin/perl -w
2 #
3 # Regenerate (overwriting only if changed):
4 #
5 # reentr.h
6 # reentr.c
7 #
8 # from information stored in the DATA section of this file.
9 #
10 # With the -U option, it also unconditionally regenerates the relevant
11 # metaconfig units:
12 #
13 # d_${func}_r.U
14 #
15 # Also accepts the standard regen_lib -q and -v args.
16 #
17 # This script is normally invoked from regen.pl.
18
19 BEGIN {
20 # Get function prototypes
21 require 'regen/regen_lib.pl';
22 }
23
24 use strict;
25 use Getopt::Std;
26 my %opts;
27 getopts('Uv', \%opts);
28
29 my %map = (
30 V => "void",
31 A => "char*", # as an input argument
32 B => "char*", # as an output argument
33 C => "const char*", # as a read-only input argument
34 I => "int",
35 L => "long",
36 W => "size_t",
37 H => "FILE**",
38 E => "int*",
39 );
40
41 # (See the definitions after __DATA__.)
42 # In func|inc|type|... a "S" means "type*", and a "R" means "type**".
43 # (The "types" are often structs, such as "struct passwd".)
44 #
45 # After the prototypes one can have |X=...|Y=... to define more types.
46 # A commonly used extra type is to define D to be equal to "type_data",
47 # for example "struct_hostent_data to" go with "struct hostent".
48 #
49 # Example #1: I_XSBWR means int func_r(X, type, char*, size_t, type**)
50 # Example #2: S_SBIE means type func_r(type, char*, int, int*)
51 # Example #3: S_CBI means type func_r(const char*, char*, int)
52
53 sub open_print_header {
54 my ($file, $quote) = @_;
55 return open_new($file, '>',
56 { by => 'regen/reentr.pl',
57 from => 'data in regen/reentr.pl',
58 file => $file, style => '*',
59 copyright => [2002, 2003, 2005 .. 2007],
60 quote => $quote });
61 }
62
63 my $h = open_print_header('reentr.h');
64 print $h <<EOF;
65 #ifndef REENTR_H
66 #define REENTR_H
67
68 /* If compiling for a threaded perl, we will macro-wrap the system/library
69 * interfaces (e.g. getpwent()) which have threaded versions
70 * (e.g. getpwent_r()), which will handle things correctly for
71 * the Perl interpreter, but otherwise (for XS) the wrapping does
72 * not take place. See L<perlxs/Thread-aware system interfaces>.
73 */
74
75 #ifndef PERL_REENTR_API
76 # if defined(PERL_CORE) || defined(PERL_EXT)
77 # define PERL_REENTR_API 1
78 # else
79 # define PERL_REENTR_API 0
80 # endif
81 #endif
82
83 #ifdef USE_REENTRANT_API
84
85 /* Deprecations: some platforms have the said reentrant interfaces
86 * but they are declared obsolete and are not to be used. Often this
87 * means that the platform has threadsafed the interfaces (hopefully).
88 * All this is OS version dependent, so we are of course fooling ourselves.
89 * If you know of more deprecations on some platforms, please add your own
90 * (by editing reentr.pl, mind!) */
91
92 #ifdef __hpux
93 # undef HAS_CRYPT_R
94 # undef HAS_ENDGRENT_R
95 # undef HAS_ENDPWENT_R
96 # undef HAS_GETGRENT_R
97 # undef HAS_GETPWENT_R
98 # undef HAS_SETLOCALE_R
99 # undef HAS_STRERROR_R
100 # define NETDB_R_OBSOLETE
101 #endif
102
103 #if defined(__osf__) && defined(__alpha) /* Tru64 aka Digital UNIX */
104 # undef HAS_CRYPT_R
105 # undef HAS_STRERROR_R
106 # define NETDB_R_OBSOLETE
107 #endif
108
109 /*
110 * As of OpenBSD 3.7, reentrant functions are now working, they just are
111 * incompatible with everyone else. To make OpenBSD happy, we have to
112 * memzero out certain structures before calling the functions.
113 */
114 #if defined(__OpenBSD__)
115 # define REENTR_MEMZERO(a,b) memzero(a,b)
116 #else
117 # define REENTR_MEMZERO(a,b) 0
118 #endif
119
120 #ifdef NETDB_R_OBSOLETE
121 # undef HAS_ENDHOSTENT_R
122 # undef HAS_ENDNETENT_R
123 # undef HAS_ENDPROTOENT_R
124 # undef HAS_ENDSERVENT_R
125 # undef HAS_GETHOSTBYADDR_R
126 # undef HAS_GETHOSTBYNAME_R
127 # undef HAS_GETHOSTENT_R
128 # undef HAS_GETNETBYADDR_R
129 # undef HAS_GETNETBYNAME_R
130 # undef HAS_GETNETENT_R
131 # undef HAS_GETPROTOBYNAME_R
132 # undef HAS_GETPROTOBYNUMBER_R
133 # undef HAS_GETPROTOENT_R
134 # undef HAS_GETSERVBYNAME_R
135 # undef HAS_GETSERVBYPORT_R
136 # undef HAS_GETSERVENT_R
137 # undef HAS_SETHOSTENT_R
138 # undef HAS_SETNETENT_R
139 # undef HAS_SETPROTOENT_R
140 # undef HAS_SETSERVENT_R
141 #endif
142
143 #ifdef I_PWD
144 # include <pwd.h>
145 #endif
146 #ifdef I_GRP
147 # include <grp.h>
148 #endif
149 #ifdef I_NETDB
150 # include <netdb.h>
151 #endif
152 #ifdef I_CRYPT
153 # ifdef I_CRYPT
154 # include <crypt.h>
155 # endif
156 #endif
157 #ifdef HAS_GETSPNAM_R
158 # ifdef I_SHADOW
159 # include <shadow.h>
160 # endif
161 #endif
162
163 EOF
164
165 my %seenh; # the different prototypes signatures for this function
166 my %seena; # the different prototypes signatures for this function in order
167 my @seenf; # all the seen functions
168 my %seenp; # the different prototype signatures for all functions
169 my %seent; # the return type of this function
170 my %seens; # the type of this function's "S"
171 my %seend; # the type of this function's "D"
172 my %seenm; # all the types
173 my %seenu; # the length of the argument list of this function
174
175 while (<DATA>) { # Read in the protoypes.
176 next if /^\s+$/;
177 chomp;
178 my ($func, $hdr, $type, @p) = split(/\s*\|\s*/, $_, -1);
179 my $u;
180 # Split off the real function name and the argument list.
181 ($func, $u) = split(' ', $func);
182 $seenu{$func} = defined $u ? length $u : 0;
183 my $FUNC = uc $func; # for output.
184 push @seenf, $func;
185 my %m = %map;
186 if ($type) {
187 $m{S} = "$type*";
188 $m{R} = "$type**";
189 }
190
191 # Set any special mapping variables (like X=x_t)
192 if (@p) {
193 while ($p[-1] =~ /=/) {
194 my ($k, $v) = ($p[-1] =~ /^([A-Za-z])\s*=\s*(.*)/);
195 $m{$k} = $v;
196 pop @p;
197 }
198 }
199
200 # If given the -U option open up the metaconfig unit for this function.
201 if ($opts{U} && open(U, ">d_${func}_r.U")) {
202 binmode U;
203 }
204
205 if ($opts{U}) {
206 # The metaconfig units needs prerequisite dependencies.
207 my $prereqs = '';
208 my $prereqh = '';
209 my $prereqsh = '';
210 if ($hdr ne 'stdio') { # There's no i_stdio.
211 $prereqs = "i_$hdr";
212 $prereqh = "$hdr.h";
213 $prereqsh = "\$$prereqs $prereqh";
214 }
215 my @prereq = qw(Inlibc Protochk Hasproto i_systypes usethreads);
216 push @prereq, $prereqs;
217 my $hdrs = "\$i_systypes sys/types.h define stdio.h $prereqsh";
218 if ($hdr eq 'time') {
219 $hdrs .= " \$i_systime sys/time.h";
220 push @prereq, 'i_systime';
221 }
222 # Output the metaconfig unit header.
223 print U <<"EOF";
224 ?RCS: \$Id: d_${func}_r.U,v $
225 ?RCS:
226 ?RCS: Copyright (c) 2002,2003 Jarkko Hietaniemi
227 ?RCS:
228 ?RCS: You may distribute under the terms of either the GNU General Public
229 ?RCS: License or the Artistic License, as specified in the README file.
230 ?RCS:
231 ?RCS: Generated by the reentr.pl from the Perl 5.8 distribution.
232 ?RCS:
233 ?MAKE:d_${func}_r ${func}_r_proto: @prereq
234 ?MAKE: -pick add \$@ %<
235 ?S:d_${func}_r:
236 ?S: This variable conditionally defines the HAS_${FUNC}_R symbol,
237 ?S: which indicates to the C program that the ${func}_r()
238 ?S: routine is available.
239 ?S:.
240 ?S:${func}_r_proto:
241 ?S: This variable encodes the prototype of ${func}_r.
242 ?S: It is zero if d_${func}_r is undef, and one of the
243 ?S: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
244 ?S: is defined.
245 ?S:.
246 ?C:HAS_${FUNC}_R:
247 ?C: This symbol, if defined, indicates that the ${func}_r routine
248 ?C: is available to ${func} re-entrantly.
249 ?C:.
250 ?C:${FUNC}_R_PROTO:
251 ?C: This symbol encodes the prototype of ${func}_r.
252 ?C: It is zero if d_${func}_r is undef, and one of the
253 ?C: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
254 ?C: is defined.
255 ?C:.
256 ?H:#\$d_${func}_r HAS_${FUNC}_R /**/
257 ?H:#define ${FUNC}_R_PROTO \$${func}_r_proto /**/
258 ?H:.
259 ?T:try hdrs d_${func}_r_proto
260 ?LINT:set d_${func}_r
261 ?LINT:set ${func}_r_proto
262 : see if ${func}_r exists
263 set ${func}_r d_${func}_r
264 eval \$inlibc
265 case "\$d_${func}_r" in
266 "\$define")
267 EOF
268 print U <<"EOF";
269 hdrs="$hdrs"
270 case "\$d_${func}_r_proto:\$usethreads" in
271 ":define") d_${func}_r_proto=define
272 set d_${func}_r_proto ${func}_r \$hdrs
273 eval \$hasproto ;;
274 *) ;;
275 esac
276 case "\$d_${func}_r_proto" in
277 define)
278 EOF
279 }
280 for my $p (@p) {
281 my ($r, $a) = ($p =~ /^(.)_(.+)/);
282 my $v = join(", ", map { $m{$_} } split '', $a);
283 if ($opts{U}) {
284 print U <<"EOF";
285 case "\$${func}_r_proto" in
286 ''|0) try='$m{$r} ${func}_r($v);'
287 ./protochk "extern \$try" \$hdrs && ${func}_r_proto=$p ;;
288 esac
289 EOF
290 }
291 $seenh{$func}->{$p}++;
292 push @{$seena{$func}}, $p;
293 $seenp{$p}++;
294 $seent{$func} = $type;
295 $seens{$func} = $m{S};
296 $seend{$func} = $m{D};
297 $seenm{$func} = \%m;
298 }
299 if ($opts{U}) {
300 print U <<"EOF";
301 case "\$${func}_r_proto" in
302 ''|0) d_${func}_r=undef
303 ${func}_r_proto=0
304 echo "Disabling ${func}_r, cannot determine prototype." >&4 ;;
305 * ) case "\$${func}_r_proto" in
306 REENTRANT_PROTO*) ;;
307 *) ${func}_r_proto="REENTRANT_PROTO_\$${func}_r_proto" ;;
308 esac
309 echo "Prototype: \$try" ;;
310 esac
311 ;;
312 *) case "\$usethreads" in
313 define) echo "${func}_r has no prototype, not using it." >&4 ;;
314 esac
315 d_${func}_r=undef
316 ${func}_r_proto=0
317 ;;
318 esac
319 ;;
320 *) ${func}_r_proto=0
321 ;;
322 esac
323
324 EOF
325 close(U);
326 }
327 }
328
329 close DATA;
330
331 {
332 # Write out all the known prototype signatures.
333 my $i = 1;
334 for my $p (sort keys %seenp) {
335 print $h "#define REENTRANT_PROTO_${p} ${i}\n";
336 $i++;
337 }
338 }
339
340 my @struct; # REENTR struct members
341 my @size; # struct member buffer size initialization code
342 my @init; # struct member buffer initialization (malloc) code
343 my @free; # struct member buffer release (free) code
344 my @wrap; # the wrapper (foo(a) -> foo_r(a,...)) cpp code
345 my @define; # defines for optional features
346
347 sub ifprotomatch {
348 my $FUNC = shift;
349 join " || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @_;
350 }
351
352 sub pushssif {
353 push @struct, @_;
354 push @size, @_;
355 push @init, @_;
356 push @free, @_;
357 }
358
359 sub pushinitfree {
360 my $func = shift;
361 push @init, <<EOF;
362 Newx(PL_reentrant_buffer->_${func}_buffer, PL_reentrant_buffer->_${func}_size, char);
363 EOF
364 push @free, <<EOF;
365 Safefree(PL_reentrant_buffer->_${func}_buffer);
366 EOF
367 }
368
369 sub define {
370 my ($n, $p, @F) = @_;
371 my @H;
372 my $H = uc $F[0];
373 push @define, <<EOF;
374 /* The @F using \L$n? */
375
376 EOF
377 my $GENFUNC;
378 for my $func (@F) {
379 my $FUNC = uc $func;
380 my $HAS = "${FUNC}_R_HAS_$n";
381 push @H, $HAS;
382 my @h = grep { /$p/ } @{$seena{$func}};
383 unless (defined $GENFUNC) {
384 $GENFUNC = $FUNC;
385 $GENFUNC =~ s/^GET//;
386 }
387 if (@h) {
388 push @define, "#if defined(HAS_${FUNC}_R) && (" . join(" || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @h) . ")\n";
389
390 push @define, <<EOF;
391 # define $HAS
392 #else
393 # undef $HAS
394 #endif
395 EOF
396 }
397 }
398 return if @F == 1;
399 push @define, <<EOF;
400
401 /* Any of the @F using \L$n? */
402
403 EOF
404 push @define, "#if (" . join(" || ", map { "defined($_)" } @H) . ")\n";
405 push @define, <<EOF;
406 # define USE_${GENFUNC}_$n
407 #else
408 # undef USE_${GENFUNC}_$n
409 #endif
410
411 EOF
412 }
413
414 define('BUFFER', 'B',
415 qw(getgrent getgrgid getgrnam));
416
417 define('PTR', 'R',
418 qw(getgrent getgrgid getgrnam));
419 define('PTR', 'R',
420 qw(getpwent getpwnam getpwuid));
421 define('PTR', 'R',
422 qw(getspent getspnam));
423
424 define('FPTR', 'H',
425 qw(getgrent getgrgid getgrnam setgrent endgrent));
426 define('FPTR', 'H',
427 qw(getpwent getpwnam getpwuid setpwent endpwent));
428
429 define('BUFFER', 'B',
430 qw(getpwent getpwgid getpwnam));
431
432 define('PTR', 'R',
433 qw(gethostent gethostbyaddr gethostbyname));
434 define('PTR', 'R',
435 qw(getnetent getnetbyaddr getnetbyname));
436 define('PTR', 'R',
437 qw(getprotoent getprotobyname getprotobynumber));
438 define('PTR', 'R',
439 qw(getservent getservbyname getservbyport));
440
441 define('BUFFER', 'B',
442 qw(gethostent gethostbyaddr gethostbyname));
443 define('BUFFER', 'B',
444 qw(getnetent getnetbyaddr getnetbyname));
445 define('BUFFER', 'B',
446 qw(getprotoent getprotobyname getprotobynumber));
447 define('BUFFER', 'B',
448 qw(getservent getservbyname getservbyport));
449
450 define('ERRNO', 'E',
451 qw(gethostent gethostbyaddr gethostbyname));
452 define('ERRNO', 'E',
453 qw(getnetent getnetbyaddr getnetbyname));
454
455 # The following loop accumulates the "ssif" (struct, size, init, free)
456 # sections that declare the struct members (in reentr.h), and the buffer
457 # size initialization, buffer initialization (malloc), and buffer
458 # release (free) code (in reentr.c).
459 #
460 # The loop also contains a lot of intrinsic logic about groups of
461 # functions (since functions of certain kind operate the same way).
462
463 for my $func (@seenf) {
464 my $FUNC = uc $func;
465 my $ifdef = "#ifdef HAS_${FUNC}_R\n";
466 my $endif = "#endif /* HAS_${FUNC}_R */\n";
467 if (exists $seena{$func}) {
468 my @p = @{$seena{$func}};
469 if ($func =~ /^(asctime|ctime|getlogin|setlocale|strerror|ttyname)$/) {
470 pushssif $ifdef;
471 push @struct, <<EOF;
472 char* _${func}_buffer;
473 size_t _${func}_size;
474 EOF
475 push @size, <<EOF;
476 PL_reentrant_buffer->_${func}_size = REENTRANTSMALLSIZE;
477 EOF
478 pushinitfree $func;
479 pushssif $endif;
480 }
481 elsif ($func =~ /^(crypt)$/) {
482 pushssif $ifdef;
483 push @struct, <<EOF;
484 #if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD
485 $seend{$func} _${func}_data;
486 #else
487 $seent{$func} *_${func}_struct_buffer;
488 #endif
489 EOF
490 push @init, <<EOF;
491 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
492 PL_reentrant_buffer->_${func}_struct_buffer = 0;
493 #endif
494 EOF
495 push @free, <<EOF;
496 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
497 Safefree(PL_reentrant_buffer->_${func}_struct_buffer);
498 #endif
499 EOF
500 pushssif $endif;
501 }
502 elsif ($func =~ /^(getgrnam|getpwnam|getspnam)$/) {
503 pushssif $ifdef;
504 # 'genfunc' can be read either as 'generic' or 'genre',
505 # it represents a group of functions.
506 my $genfunc = $func;
507 $genfunc =~ s/nam/ent/g;
508 $genfunc =~ s/^get//;
509 my $GENFUNC = uc $genfunc;
510 push @struct, <<EOF;
511 $seent{$func} _${genfunc}_struct;
512 char* _${genfunc}_buffer;
513 size_t _${genfunc}_size;
514 EOF
515 push @struct, <<EOF;
516 # ifdef USE_${GENFUNC}_PTR
517 $seent{$func}* _${genfunc}_ptr;
518 # endif
519 EOF
520 push @struct, <<EOF;
521 # ifdef USE_${GENFUNC}_FPTR
522 FILE* _${genfunc}_fptr;
523 # endif
524 EOF
525 push @init, <<EOF;
526 # ifdef USE_${GENFUNC}_FPTR
527 PL_reentrant_buffer->_${genfunc}_fptr = NULL;
528 # endif
529 EOF
530 my $sc = $genfunc eq 'grent' ?
531 '_SC_GETGR_R_SIZE_MAX' : '_SC_GETPW_R_SIZE_MAX';
532 my $sz = "_${genfunc}_size";
533 push @size, <<EOF;
534 # if defined(HAS_SYSCONF) && defined($sc) && !defined(__GLIBC__)
535 PL_reentrant_buffer->$sz = sysconf($sc);
536 if (PL_reentrant_buffer->$sz == (size_t) -1)
537 PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
538 # else
539 # if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
540 PL_reentrant_buffer->$sz = SIABUFSIZ;
541 # else
542 # ifdef __sgi
543 PL_reentrant_buffer->$sz = BUFSIZ;
544 # else
545 PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
546 # endif
547 # endif
548 # endif
549 EOF
550 pushinitfree $genfunc;
551 pushssif $endif;
552 }
553 elsif ($func =~ /^(gethostbyname|getnetbyname|getservbyname|getprotobyname)$/) {
554 pushssif $ifdef;
555 my $genfunc = $func;
556 $genfunc =~ s/byname/ent/;
557 $genfunc =~ s/^get//;
558 my $GENFUNC = uc $genfunc;
559 my $D = ifprotomatch($FUNC, grep {/D/} @p);
560 my $d = $seend{$func};
561 $d =~ s/\*$//; # snip: we need the base type.
562 push @struct, <<EOF;
563 $seent{$func} _${genfunc}_struct;
564 # if $D
565 $d _${genfunc}_data;
566 # else
567 char* _${genfunc}_buffer;
568 size_t _${genfunc}_size;
569 # endif
570 # ifdef USE_${GENFUNC}_PTR
571 $seent{$func}* _${genfunc}_ptr;
572 # endif
573 EOF
574 push @struct, <<EOF;
575 # ifdef USE_${GENFUNC}_ERRNO
576 int _${genfunc}_errno;
577 # endif
578 EOF
579 push @size, <<EOF;
580 #if !($D)
581 PL_reentrant_buffer->_${genfunc}_size = REENTRANTUSUALSIZE;
582 #endif
583 EOF
584 push @init, <<EOF;
585 #if !($D)
586 Newx(PL_reentrant_buffer->_${genfunc}_buffer, PL_reentrant_buffer->_${genfunc}_size, char);
587 #endif
588 EOF
589 push @free, <<EOF;
590 #if !($D)
591 Safefree(PL_reentrant_buffer->_${genfunc}_buffer);
592 #endif
593 EOF
594 pushssif $endif;
595 }
596 elsif ($func =~ /^(readdir|readdir64)$/) {
597 pushssif $ifdef;
598 my $R = ifprotomatch($FUNC, grep {/R/} @p);
599 push @struct, <<EOF;
600 $seent{$func}* _${func}_struct;
601 size_t _${func}_size;
602 # if $R
603 $seent{$func}* _${func}_ptr;
604 # endif
605 EOF
606 push @size, <<EOF;
607 /* This is the size Solaris recommends.
608 * (though we go static, should use pathconf() instead) */
609 PL_reentrant_buffer->_${func}_size = sizeof($seent{$func}) + MAXPATHLEN + 1;
610 EOF
611 push @init, <<EOF;
612 PL_reentrant_buffer->_${func}_struct = ($seent{$func}*)safemalloc(PL_reentrant_buffer->_${func}_size);
613 EOF
614 push @free, <<EOF;
615 Safefree(PL_reentrant_buffer->_${func}_struct);
616 EOF
617 pushssif $endif;
618 }
619
620 push @wrap, $ifdef;
621
622 push @wrap, <<EOF;
623 # if defined(PERL_REENTR_API) && (PERL_REENTR_API+0 == 1)
624 # undef $func
625 EOF
626
627 # Write out what we have learned.
628
629 my @v = 'a'..'z';
630 my $v = join(", ", @v[0..$seenu{$func}-1]);
631 for my $p (@p) {
632 my ($r, $a) = split '_', $p;
633 my $test = $r eq 'I' ? ' == 0' : '';
634 my $true = 1;
635 my $genfunc = $func;
636 if ($genfunc =~ /^(?:get|set|end)(pw|gr|host|net|proto|serv|sp)/) {
637 $genfunc = "${1}ent";
638 }
639 my $b = $a;
640 my $w = '';
641 substr($b, 0, $seenu{$func}) = '';
642 if ($b =~ /R/) {
643 $true = "PL_reentrant_buffer->_${genfunc}_ptr";
644 } elsif ($b =~ /S/) {
645 if ($func =~ /^readdir/) {
646 $true = "PL_reentrant_buffer->_${genfunc}_struct";
647 } else {
648 $true = "&PL_reentrant_buffer->_${genfunc}_struct";
649 }
650 } elsif ($b =~ /B/) {
651 $true = "PL_reentrant_buffer->_${genfunc}_buffer";
652 }
653 if (length $b) {
654 $w = join ", ",
655 map {
656 $_ eq 'R' ?
657 "&PL_reentrant_buffer->_${genfunc}_ptr" :
658 $_ eq 'E' ?
659 "&PL_reentrant_buffer->_${genfunc}_errno" :
660 $_ eq 'B' ?
661 "PL_reentrant_buffer->_${genfunc}_buffer" :
662 $_ =~ /^[WI]$/ ?
663 "PL_reentrant_buffer->_${genfunc}_size" :
664 $_ eq 'H' ?
665 "&PL_reentrant_buffer->_${genfunc}_fptr" :
666 $_ eq 'D' ?
667 "&PL_reentrant_buffer->_${genfunc}_data" :
668 $_ eq 'S' ?
669 ($func =~ /^readdir\d*$/ ?
670 "PL_reentrant_buffer->_${genfunc}_struct" :
671 $func =~ /^crypt$/ ?
672 "PL_reentrant_buffer->_${genfunc}_struct_buffer" :
673 "&PL_reentrant_buffer->_${genfunc}_struct") :
674 $_
675 } split '', $b;
676 $w = ", $w" if length $v;
677 }
678
679 my $call = "${func}_r($v$w)";
680
681 # Must make OpenBSD happy
682 my $memzero = '';
683 if($p =~ /D$/ &&
684 ($genfunc eq 'protoent' || $genfunc eq 'servent')) {
685 $memzero = 'REENTR_MEMZERO(&PL_reentrant_buffer->_' . $genfunc . '_data, sizeof(PL_reentrant_buffer->_' . $genfunc . '_data)),';
686 }
687 push @wrap, <<EOF;
688 # if !defined($func) && ${FUNC}_R_PROTO == REENTRANT_PROTO_$p
689 EOF
690 if ($r eq 'V' || $r eq 'B') {
691 push @wrap, <<EOF;
692 # define $func($v) $call
693 EOF
694 } else {
695 if ($func =~ /^get/) {
696 my $rv = $v ? ", $v" : "";
697 if ($r eq 'I') {
698 push @wrap, <<EOF;
699 # define $func($v) ($memzero(PL_reentrant_retint = $call)$test ? $true : ((PL_reentrant_retint == ERANGE) ? ($seent{$func} *) Perl_reentrant_retry("$func"$rv) : 0))
700 EOF
701 } else {
702 push @wrap, <<EOF;
703 # define $func($v) ($call$test ? $true : ((errno == ERANGE) ? ($seent{$func} *) Perl_reentrant_retry("$func"$rv) : 0))
704 EOF
705 }
706 } else {
707 push @wrap, <<EOF;
708 # define $func($v) ($call$test ? $true : 0)
709 EOF
710 }
711 }
712 push @wrap, <<EOF; # !defined(xxx) && XXX_R_PROTO == REENTRANT_PROTO_Y_TS
713 # endif
714 EOF
715 }
716
717 push @wrap, <<EOF; # defined(PERL_REENTR_API) && (PERL_REENTR_API+0 == 1)
718 # endif
719 EOF
720
721 push @wrap, $endif, "\n";
722 }
723 }
724
725 local $" = '';
726
727 print $h <<EOF;
728
729 /* Defines for indicating which special features are supported. */
730
731 @define
732 typedef struct {
733 @struct
734 int dummy; /* cannot have empty structs */
735 } REENTR;
736
737 /* The wrappers. */
738
739 @wrap
740
741 #endif /* USE_REENTRANT_API */
742
743 #endif
744 EOF
745
746 read_only_bottom_close_and_rename($h);
747
748 # Prepare to write the reentr.c.
749
750 my $c = open_print_header('reentr.c', <<'EOQ');
751 */
752
753 /*
754 * "Saruman," I said, standing away from him, "only one hand at a time can
755 * wield the One, and you know that well, so do not trouble to say we!"
756 *
757 * [p.260 of _The Lord of the Rings_, II/ii: "The Council of Elrond"]
758 */
759
760 /*
761 * This file contains a collection of automatically created wrappers
762 * (created by running reentr.pl) for reentrant (thread-safe) versions of
763 * various library calls, such as getpwent_r. The wrapping is done so
764 * that other files like pp_sys.c calling those library functions need not
765 * care about the differences between various platforms' idiosyncrasies
766 * regarding these reentrant interfaces.
767 */
768 EOQ
769
770 print $c <<"EOF";
771 #include "EXTERN.h"
772 #define PERL_IN_REENTR_C
773 #include "perl.h"
774 #include "reentr.h"
775
776 void
777 Perl_reentrant_size(pTHX) {
778 PERL_UNUSED_CONTEXT;
779 #ifdef USE_REENTRANT_API
780 #define REENTRANTSMALLSIZE 256 /* Make something up. */
781 #define REENTRANTUSUALSIZE 4096 /* Make something up. */
782 @size
783 #endif /* USE_REENTRANT_API */
784 }
785
786 void
787 Perl_reentrant_init(pTHX) {
788 PERL_UNUSED_CONTEXT;
789 #ifdef USE_REENTRANT_API
790 Newx(PL_reentrant_buffer, 1, REENTR);
791 Perl_reentrant_size(aTHX);
792 @init
793 #endif /* USE_REENTRANT_API */
794 }
795
796 void
797 Perl_reentrant_free(pTHX) {
798 PERL_UNUSED_CONTEXT;
799 #ifdef USE_REENTRANT_API
800 @free
801 Safefree(PL_reentrant_buffer);
802 #endif /* USE_REENTRANT_API */
803 }
804
805 void*
806 Perl_reentrant_retry(const char *f, ...)
807 {
808 void *retptr = NULL;
809 va_list ap;
810 #ifdef USE_REENTRANT_API
811 dTHX;
812 /* Easier to special case this here than in embed.pl. (Look at what it
813 generates for proto.h) */
814 PERL_ARGS_ASSERT_REENTRANT_RETRY;
815 #endif
816 va_start(ap, f);
817 {
818 #ifdef USE_REENTRANT_API
819 # 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)
820 void *p0;
821 # endif
822 # if defined(USE_SERVENT_BUFFER)
823 void *p1;
824 # endif
825 # if defined(USE_HOSTENT_BUFFER)
826 size_t asize;
827 # endif
828 # if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
829 int anint;
830 # endif
831
832 switch (PL_op->op_type) {
833 #ifdef USE_HOSTENT_BUFFER
834 case OP_GHBYADDR:
835 case OP_GHBYNAME:
836 case OP_GHOSTENT:
837 {
838 #ifdef PERL_REENTRANT_MAXSIZE
839 if (PL_reentrant_buffer->_hostent_size <=
840 PERL_REENTRANT_MAXSIZE / 2)
841 #endif
842 {
843 PL_reentrant_buffer->_hostent_size *= 2;
844 Renew(PL_reentrant_buffer->_hostent_buffer,
845 PL_reentrant_buffer->_hostent_size, char);
846 switch (PL_op->op_type) {
847 case OP_GHBYADDR:
848 p0 = va_arg(ap, void *);
849 asize = va_arg(ap, size_t);
850 anint = va_arg(ap, int);
851 retptr = gethostbyaddr(p0, asize, anint); break;
852 case OP_GHBYNAME:
853 p0 = va_arg(ap, void *);
854 retptr = gethostbyname((char *)p0); break;
855 case OP_GHOSTENT:
856 retptr = gethostent(); break;
857 default:
858 SETERRNO(ERANGE, LIB_INVARG);
859 break;
860 }
861 }
862 }
863 break;
864 #endif
865 #ifdef USE_GRENT_BUFFER
866 case OP_GGRNAM:
867 case OP_GGRGID:
868 case OP_GGRENT:
869 {
870 #ifdef PERL_REENTRANT_MAXSIZE
871 if (PL_reentrant_buffer->_grent_size <=
872 PERL_REENTRANT_MAXSIZE / 2)
873 #endif
874 {
875 Gid_t gid;
876 PL_reentrant_buffer->_grent_size *= 2;
877 Renew(PL_reentrant_buffer->_grent_buffer,
878 PL_reentrant_buffer->_grent_size, char);
879 switch (PL_op->op_type) {
880 case OP_GGRNAM:
881 p0 = va_arg(ap, void *);
882 retptr = getgrnam((char *)p0); break;
883 case OP_GGRGID:
884 #if Gid_t_size < INTSIZE
885 gid = (Gid_t)va_arg(ap, int);
886 #else
887 gid = va_arg(ap, Gid_t);
888 #endif
889 retptr = getgrgid(gid); break;
890 case OP_GGRENT:
891 retptr = getgrent(); break;
892 default:
893 SETERRNO(ERANGE, LIB_INVARG);
894 break;
895 }
896 }
897 }
898 break;
899 #endif
900 #ifdef USE_NETENT_BUFFER
901 case OP_GNBYADDR:
902 case OP_GNBYNAME:
903 case OP_GNETENT:
904 {
905 #ifdef PERL_REENTRANT_MAXSIZE
906 if (PL_reentrant_buffer->_netent_size <=
907 PERL_REENTRANT_MAXSIZE / 2)
908 #endif
909 {
910 Netdb_net_t net;
911 PL_reentrant_buffer->_netent_size *= 2;
912 Renew(PL_reentrant_buffer->_netent_buffer,
913 PL_reentrant_buffer->_netent_size, char);
914 switch (PL_op->op_type) {
915 case OP_GNBYADDR:
916 net = va_arg(ap, Netdb_net_t);
917 anint = va_arg(ap, int);
918 retptr = getnetbyaddr(net, anint); break;
919 case OP_GNBYNAME:
920 p0 = va_arg(ap, void *);
921 retptr = getnetbyname((char *)p0); break;
922 case OP_GNETENT:
923 retptr = getnetent(); break;
924 default:
925 SETERRNO(ERANGE, LIB_INVARG);
926 break;
927 }
928 }
929 }
930 break;
931 #endif
932 #ifdef USE_PWENT_BUFFER
933 case OP_GPWNAM:
934 case OP_GPWUID:
935 case OP_GPWENT:
936 {
937 #ifdef PERL_REENTRANT_MAXSIZE
938 if (PL_reentrant_buffer->_pwent_size <=
939 PERL_REENTRANT_MAXSIZE / 2)
940 #endif
941 {
942 Uid_t uid;
943 PL_reentrant_buffer->_pwent_size *= 2;
944 Renew(PL_reentrant_buffer->_pwent_buffer,
945 PL_reentrant_buffer->_pwent_size, char);
946 switch (PL_op->op_type) {
947 case OP_GPWNAM:
948 p0 = va_arg(ap, void *);
949 retptr = getpwnam((char *)p0); break;
950 case OP_GPWUID:
951 #if Uid_t_size < INTSIZE
952 uid = (Uid_t)va_arg(ap, int);
953 #else
954 uid = va_arg(ap, Uid_t);
955 #endif
956 retptr = getpwuid(uid); break;
957 #if defined(HAS_GETPWENT) || defined(HAS_GETPWENT_R)
958 case OP_GPWENT:
959 retptr = getpwent(); break;
960 #endif
961 default:
962 SETERRNO(ERANGE, LIB_INVARG);
963 break;
964 }
965 }
966 }
967 break;
968 #endif
969 #ifdef USE_PROTOENT_BUFFER
970 case OP_GPBYNAME:
971 case OP_GPBYNUMBER:
972 case OP_GPROTOENT:
973 {
974 #ifdef PERL_REENTRANT_MAXSIZE
975 if (PL_reentrant_buffer->_protoent_size <=
976 PERL_REENTRANT_MAXSIZE / 2)
977 #endif
978 {
979 PL_reentrant_buffer->_protoent_size *= 2;
980 Renew(PL_reentrant_buffer->_protoent_buffer,
981 PL_reentrant_buffer->_protoent_size, char);
982 switch (PL_op->op_type) {
983 case OP_GPBYNAME:
984 p0 = va_arg(ap, void *);
985 retptr = getprotobyname((char *)p0); break;
986 case OP_GPBYNUMBER:
987 anint = va_arg(ap, int);
988 retptr = getprotobynumber(anint); break;
989 case OP_GPROTOENT:
990 retptr = getprotoent(); break;
991 default:
992 SETERRNO(ERANGE, LIB_INVARG);
993 break;
994 }
995 }
996 }
997 break;
998 #endif
999 #ifdef USE_SERVENT_BUFFER
1000 case OP_GSBYNAME:
1001 case OP_GSBYPORT:
1002 case OP_GSERVENT:
1003 {
1004 #ifdef PERL_REENTRANT_MAXSIZE
1005 if (PL_reentrant_buffer->_servent_size <=
1006 PERL_REENTRANT_MAXSIZE / 2)
1007 #endif
1008 {
1009 PL_reentrant_buffer->_servent_size *= 2;
1010 Renew(PL_reentrant_buffer->_servent_buffer,
1011 PL_reentrant_buffer->_servent_size, char);
1012 switch (PL_op->op_type) {
1013 case OP_GSBYNAME:
1014 p0 = va_arg(ap, void *);
1015 p1 = va_arg(ap, void *);
1016 retptr = getservbyname((char *)p0, (char *)p1); break;
1017 case OP_GSBYPORT:
1018 anint = va_arg(ap, int);
1019 p0 = va_arg(ap, void *);
1020 retptr = getservbyport(anint, (char *)p0); break;
1021 case OP_GSERVENT:
1022 retptr = getservent(); break;
1023 default:
1024 SETERRNO(ERANGE, LIB_INVARG);
1025 break;
1026 }
1027 }
1028 }
1029 break;
1030 #endif
1031 default:
1032 /* Not known how to retry, so just fail. */
1033 break;
1034 }
1035 #else
1036 PERL_UNUSED_ARG(f);
1037 #endif
1038 }
1039 va_end(ap);
1040 return retptr;
1041 }
1042 EOF
1043
1044 read_only_bottom_close_and_rename($c);
1045
1046 __DATA__
1047 asctime S |time |const struct tm|B_SB|B_SBI|I_SB|I_SBI
1048 crypt CC |crypt |struct crypt_data|B_CCS|B_CCD|D=CRYPTD*
1049 ctermid B |stdio | |B_B
1050 ctime S |time |const time_t |B_SB|B_SBI|I_SB|I_SBI
1051 endgrent |grp | |I_H|V_H
1052 endhostent |netdb | |I_D|V_D|D=struct hostent_data*
1053 endnetent |netdb | |I_D|V_D|D=struct netent_data*
1054 endprotoent |netdb | |I_D|V_D|D=struct protoent_data*
1055 endpwent |pwd | |I_H|V_H
1056 endservent |netdb | |I_D|V_D|D=struct servent_data*
1057 getgrent |grp |struct group |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
1058 getgrgid T |grp |struct group |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=gid_t
1059 getgrnam C |grp |struct group |I_CSBWR|I_CSBIR|S_CBI|I_CSBI|S_CSBI
1060 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
1061 gethostbyname C |netdb |struct hostent |I_CSBWRE|S_CSBIE|I_CSD|D=struct hostent_data*
1062 gethostent |netdb |struct hostent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct hostent_data*
1063 getlogin |unistd |char |I_BW|I_BI|B_BW|B_BI
1064 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
1065 getnetbyname C |netdb |struct netent |I_CSBWRE|I_CSBI|S_CSBI|I_CSD|D=struct netent_data*
1066 getnetent |netdb |struct netent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct netent_data*
1067 getprotobyname C|netdb |struct protoent|I_CSBWR|S_CSBI|I_CSD|D=struct protoent_data*
1068 getprotobynumber I |netdb |struct protoent|I_ISBWR|S_ISBI|I_ISD|D=struct protoent_data*
1069 getprotoent |netdb |struct protoent|I_SBWR|I_SBI|S_SBI|I_SD|D=struct protoent_data*
1070 getpwent |pwd |struct passwd |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
1071 getpwnam C |pwd |struct passwd |I_CSBWR|I_CSBIR|S_CSBI|I_CSBI
1072 getpwuid T |pwd |struct passwd |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=uid_t
1073 getservbyname CC|netdb |struct servent |I_CCSBWR|S_CCSBI|I_CCSD|D=struct servent_data*
1074 getservbyport IC|netdb |struct servent |I_ICSBWR|S_ICSBI|I_ICSD|D=struct servent_data*
1075 getservent |netdb |struct servent |I_SBWR|I_SBI|S_SBI|I_SD|D=struct servent_data*
1076 getspnam C |shadow |struct spwd |I_CSBWR|S_CSBI
1077 readdir T |dirent |struct dirent |I_TSR|I_TS|T=DIR*
1078 readdir64 T |dirent |struct dirent64|I_TSR|I_TS|T=DIR*
1079 setgrent |grp | |I_H|V_H
1080 sethostent I |netdb | |I_ID|V_ID|D=struct hostent_data*
1081 setlocale IC |locale | |I_ICBI
1082 setnetent I |netdb | |I_ID|V_ID|D=struct netent_data*
1083 setprotoent I |netdb | |I_ID|V_ID|D=struct protoent_data*
1084 setpwent |pwd | |I_H|V_H
1085 setservent I |netdb | |I_ID|V_ID|D=struct servent_data*
1086 strerror I |string | |I_IBW|I_IBI|B_IBW
1087 tmpnam B |stdio | |B_B
1088 ttyname I |unistd | |I_IBW|I_IBI|B_IBI