1#!/usr/bin/perl -w 2 3# 4# Generate the reentr.c and reentr.h, 5# and optionally also the relevant metaconfig units (-U option). 6# 7 8BEGIN { 9 # Get function prototypes 10 require 'regen_lib.pl'; 11} 12 13use strict; 14use Getopt::Std; 15my %opts; 16getopts('U', \%opts); 17 18my %map = ( 19 V => "void", 20 A => "char*", # as an input argument 21 B => "char*", # as an output argument 22 C => "const char*", # as a read-only input argument 23 I => "int", 24 L => "long", 25 W => "size_t", 26 H => "FILE**", 27 E => "int*", 28 ); 29 30# (See the definitions after __DATA__.) 31# In func|inc|type|... a "S" means "type*", and a "R" means "type**". 32# (The "types" are often structs, such as "struct passwd".) 33# 34# After the prototypes one can have |X=...|Y=... to define more types. 35# A commonly used extra type is to define D to be equal to "type_data", 36# for example "struct_hostent_data to" go with "struct hostent". 37# 38# Example #1: I_XSBWR means int func_r(X, type, char*, size_t, type**) 39# Example #2: S_SBIE means type func_r(type, char*, int, int*) 40# Example #3: S_CBI means type func_r(const char*, char*, int) 41 42 43safer_unlink 'reentr.h'; 44die "reentr.h: $!" unless open(H, ">reentr.h"); 45binmode H; 46select H; 47print <<EOF; 48/* -*- buffer-read-only: t -*- 49 * 50 * reentr.h 51 * 52 * Copyright (C) 2002, 2003, 2005, 2006 by Larry Wall and others 53 * 54 * You may distribute under the terms of either the GNU General Public 55 * License or the Artistic License, as specified in the README file. 56 * 57 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!! 58 * This file is built by reentr.pl from data in reentr.pl. 59 */ 60 61#ifndef REENTR_H 62#define REENTR_H 63 64#ifdef USE_REENTRANT_API 65 66#ifdef PERL_CORE 67# define PL_REENTRANT_RETINT PL_reentrant_retint 68#endif 69 70/* Deprecations: some platforms have the said reentrant interfaces 71 * but they are declared obsolete and are not to be used. Often this 72 * means that the platform has threadsafed the interfaces (hopefully). 73 * All this is OS version dependent, so we are of course fooling ourselves. 74 * If you know of more deprecations on some platforms, please add your own. */ 75 76#ifdef __hpux 77# undef HAS_CRYPT_R 78# undef HAS_DRAND48_R 79# undef HAS_ENDGRENT_R 80# undef HAS_ENDPWENT_R 81# undef HAS_GETGRENT_R 82# undef HAS_GETPWENT_R 83# undef HAS_SETLOCALE_R 84# undef HAS_SRAND48_R 85# undef HAS_STRERROR_R 86# define NETDB_R_OBSOLETE 87#endif 88 89#if defined(__osf__) && defined(__alpha) /* Tru64 aka Digital UNIX */ 90# undef HAS_CRYPT_R 91# undef HAS_STRERROR_R 92# define NETDB_R_OBSOLETE 93#endif 94 95#ifdef NETDB_R_OBSOLETE 96# undef HAS_ENDHOSTENT_R 97# undef HAS_ENDNETENT_R 98# undef HAS_ENDPROTOENT_R 99# undef HAS_ENDSERVENT_R 100# undef HAS_GETHOSTBYADDR_R 101# undef HAS_GETHOSTBYNAME_R 102# undef HAS_GETHOSTENT_R 103# undef HAS_GETNETBYADDR_R 104# undef HAS_GETNETBYNAME_R 105# undef HAS_GETNETENT_R 106# undef HAS_GETPROTOBYNAME_R 107# undef HAS_GETPROTOBYNUMBER_R 108# undef HAS_GETPROTOENT_R 109# undef HAS_GETSERVBYNAME_R 110# undef HAS_GETSERVBYPORT_R 111# undef HAS_GETSERVENT_R 112# undef HAS_SETHOSTENT_R 113# undef HAS_SETNETENT_R 114# undef HAS_SETPROTOENT_R 115# undef HAS_SETSERVENT_R 116#endif 117 118#ifdef I_PWD 119# include <pwd.h> 120#endif 121#ifdef I_GRP 122# include <grp.h> 123#endif 124#ifdef I_NETDB 125# include <netdb.h> 126#endif 127#ifdef I_STDLIB 128# include <stdlib.h> /* drand48_data */ 129#endif 130#ifdef I_CRYPT 131# ifdef I_CRYPT 132# include <crypt.h> 133# endif 134#endif 135#ifdef HAS_GETSPNAM_R 136# ifdef I_SHADOW 137# include <shadow.h> 138# endif 139#endif 140 141EOF 142 143my %seenh; # the different prototypes signatures for this function 144my %seena; # the different prototypes signatures for this function in order 145my @seenf; # all the seen functions 146my %seenp; # the different prototype signatures for all functions 147my %seent; # the return type of this function 148my %seens; # the type of this function's "S" 149my %seend; # the type of this function's "D" 150my %seenm; # all the types 151my %seenu; # the length of the argument list of this function 152my %seenr; # the return type of this function 153 154while (<DATA>) { # Read in the protypes. 155 next if /^\s+$/; 156 chomp; 157 my ($func, $hdr, $type, @p) = split(/\s*\|\s*/, $_, -1); 158 my ($r,$u); 159 # Split off the real function name and the argument list. 160 ($func, $u) = split(' ', $func); 161 $u = "V_V" unless $u; 162 ($r, $u) = ($u =~ /^(.)_(.+)/); 163 $seenu{$func} = $u eq 'V' ? 0 : length $u; 164 $seenr{$func} = $r; 165 my $FUNC = uc $func; # for output. 166 push @seenf, $func; 167 my %m = %map; 168 if ($type) { 169 $m{S} = "$type*"; 170 $m{R} = "$type**"; 171 } 172 173 # Set any special mapping variables (like X=x_t) 174 if (@p) { 175 while ($p[-1] =~ /=/) { 176 my ($k, $v) = ($p[-1] =~ /^([A-Za-z])\s*=\s*(.*)/); 177 $m{$k} = $v; 178 pop @p; 179 } 180 } 181 182 # If given the -U option open up the metaconfig unit for this function. 183 if ($opts{U} && open(U, ">d_${func}_r.U")) { 184 binmode U; 185 select U; 186 } 187 188 if ($opts{U}) { 189 # The metaconfig units needs prerequisite dependencies. 190 my $prereqs = ''; 191 my $prereqh = ''; 192 my $prereqsh = ''; 193 if ($hdr ne 'stdio') { # There's no i_stdio. 194 $prereqs = "i_$hdr"; 195 $prereqh = "$hdr.h"; 196 $prereqsh = "\$$prereqs $prereqh"; 197 } 198 my @prereq = qw(Inlibc Protochk Hasproto i_systypes usethreads); 199 push @prereq, $prereqs; 200 my $hdrs = "\$i_systypes sys/types.h define stdio.h $prereqsh"; 201 if ($hdr eq 'time') { 202 $hdrs .= " \$i_systime sys/time.h"; 203 push @prereq, 'i_systime'; 204 } 205 # Output the metaconfig unit header. 206 print <<EOF; 207?RCS: \$Id: d_${func}_r.U,v $ 208?RCS: 209?RCS: Copyright (c) 2002,2003 Jarkko Hietaniemi 210?RCS: 211?RCS: You may distribute under the terms of either the GNU General Public 212?RCS: License or the Artistic License, as specified in the README file. 213?RCS: 214?RCS: Generated by the reentr.pl from the Perl 5.8 distribution. 215?RCS: 216?MAKE:d_${func}_r ${func}_r_proto: @prereq 217?MAKE: -pick add \$@ %< 218?S:d_${func}_r: 219?S: This variable conditionally defines the HAS_${FUNC}_R symbol, 220?S: which indicates to the C program that the ${func}_r() 221?S: routine is available. 222?S:. 223?S:${func}_r_proto: 224?S: This variable encodes the prototype of ${func}_r. 225?S: It is zero if d_${func}_r is undef, and one of the 226?S: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r 227?S: is defined. 228?S:. 229?C:HAS_${FUNC}_R: 230?C: This symbol, if defined, indicates that the ${func}_r routine 231?C: is available to ${func} re-entrantly. 232?C:. 233?C:${FUNC}_R_PROTO: 234?C: This symbol encodes the prototype of ${func}_r. 235?C: It is zero if d_${func}_r is undef, and one of the 236?C: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r 237?C: is defined. 238?C:. 239?H:#\$d_${func}_r HAS_${FUNC}_R /**/ 240?H:#define ${FUNC}_R_PROTO \$${func}_r_proto /**/ 241?H:. 242?T:try hdrs d_${func}_r_proto 243?LINT:set d_${func}_r 244?LINT:set ${func}_r_proto 245: see if ${func}_r exists 246set ${func}_r d_${func}_r 247eval \$inlibc 248case "\$d_${func}_r" in 249"\$define") 250EOF 251 print <<EOF; 252 hdrs="$hdrs" 253 case "\$d_${func}_r_proto:\$usethreads" in 254 ":define") d_${func}_r_proto=define 255 set d_${func}_r_proto ${func}_r \$hdrs 256 eval \$hasproto ;; 257 *) ;; 258 esac 259 case "\$d_${func}_r_proto" in 260 define) 261EOF 262 } 263 for my $p (@p) { 264 my ($r, $a) = ($p =~ /^(.)_(.+)/); 265 my $v = join(", ", map { $m{$_} } split '', $a); 266 if ($opts{U}) { 267 print <<EOF ; 268 case "\$${func}_r_proto" in 269 ''|0) try='$m{$r} ${func}_r($v);' 270 ./protochk "extern \$try" \$hdrs && ${func}_r_proto=$p ;; 271 esac 272EOF 273 } 274 $seenh{$func}->{$p}++; 275 push @{$seena{$func}}, $p; 276 $seenp{$p}++; 277 $seent{$func} = $type; 278 $seens{$func} = $m{S}; 279 $seend{$func} = $m{D}; 280 $seenm{$func} = \%m; 281 } 282 if ($opts{U}) { 283 print <<EOF; 284 case "\$${func}_r_proto" in 285 ''|0) d_${func}_r=undef 286 ${func}_r_proto=0 287 echo "Disabling ${func}_r, cannot determine prototype." >&4 ;; 288 * ) case "\$${func}_r_proto" in 289 REENTRANT_PROTO*) ;; 290 *) ${func}_r_proto="REENTRANT_PROTO_\$${func}_r_proto" ;; 291 esac 292 echo "Prototype: \$try" ;; 293 esac 294 ;; 295 *) case "\$usethreads" in 296 define) echo "${func}_r has no prototype, not using it." >&4 ;; 297 esac 298 d_${func}_r=undef 299 ${func}_r_proto=0 300 ;; 301 esac 302 ;; 303*) ${func}_r_proto=0 304 ;; 305esac 306 307EOF 308 close(U); 309 } 310} 311 312close DATA; 313 314# Prepare to continue writing the reentr.h. 315 316select H; 317 318{ 319 # Write out all the known prototype signatures. 320 my $i = 1; 321 for my $p (sort keys %seenp) { 322 print "#define REENTRANT_PROTO_${p} ${i}\n"; 323 $i++; 324 } 325} 326 327my @struct; # REENTR struct members 328my @size; # struct member buffer size initialization code 329my @init; # struct member buffer initialization (malloc) code 330my @free; # struct member buffer release (free) code 331my @wrap; # the wrapper (foo(a) -> foo_r(a,...)) cpp code 332my @define; # defines for optional features 333 334sub ifprotomatch { 335 my $FUNC = shift; 336 join " || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @_; 337} 338 339sub pushssif { 340 push @struct, @_; 341 push @size, @_; 342 push @init, @_; 343 push @free, @_; 344} 345 346sub pushinitfree { 347 my $func = shift; 348 push @init, <<EOF; 349 Newx(PL_reentrant_buffer->_${func}_buffer, PL_reentrant_buffer->_${func}_size, char); 350EOF 351 push @free, <<EOF; 352 Safefree(PL_reentrant_buffer->_${func}_buffer); 353EOF 354} 355 356sub define { 357 my ($n, $p, @F) = @_; 358 my @H; 359 my $H = uc $F[0]; 360 push @define, <<EOF; 361/* The @F using \L$n? */ 362 363EOF 364 my $GENFUNC; 365 for my $func (@F) { 366 my $FUNC = uc $func; 367 my $HAS = "${FUNC}_R_HAS_$n"; 368 push @H, $HAS; 369 my @h = grep { /$p/ } @{$seena{$func}}; 370 unless (defined $GENFUNC) { 371 $GENFUNC = $FUNC; 372 $GENFUNC =~ s/^GET//; 373 } 374 if (@h) { 375 push @define, "#if defined(HAS_${FUNC}_R) && (" . join(" || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @h) . ")\n"; 376 377 push @define, <<EOF; 378# define $HAS 379#else 380# undef $HAS 381#endif 382EOF 383 } 384 } 385 return if @F == 1; 386 push @define, <<EOF; 387 388/* Any of the @F using \L$n? */ 389 390EOF 391 push @define, "#if (" . join(" || ", map { "defined($_)" } @H) . ")\n"; 392 push @define, <<EOF; 393# define USE_${GENFUNC}_$n 394#else 395# undef USE_${GENFUNC}_$n 396#endif 397 398EOF 399} 400 401define('BUFFER', 'B', 402 qw(getgrent getgrgid getgrnam)); 403 404define('PTR', 'R', 405 qw(getgrent getgrgid getgrnam)); 406define('PTR', 'R', 407 qw(getpwent getpwnam getpwuid)); 408define('PTR', 'R', 409 qw(getspent getspnam)); 410 411define('FPTR', 'H', 412 qw(getgrent getgrgid getgrnam setgrent endgrent)); 413define('FPTR', 'H', 414 qw(getpwent getpwnam getpwuid setpwent endpwent)); 415 416define('BUFFER', 'B', 417 qw(getpwent getpwgid getpwnam)); 418 419define('PTR', 'R', 420 qw(gethostent gethostbyaddr gethostbyname)); 421define('PTR', 'R', 422 qw(getnetent getnetbyaddr getnetbyname)); 423define('PTR', 'R', 424 qw(getprotoent getprotobyname getprotobynumber)); 425define('PTR', 'R', 426 qw(getservent getservbyname getservbyport)); 427 428define('BUFFER', 'B', 429 qw(gethostent gethostbyaddr gethostbyname)); 430define('BUFFER', 'B', 431 qw(getnetent getnetbyaddr getnetbyname)); 432define('BUFFER', 'B', 433 qw(getprotoent getprotobyname getprotobynumber)); 434define('BUFFER', 'B', 435 qw(getservent getservbyname getservbyport)); 436 437define('ERRNO', 'E', 438 qw(gethostent gethostbyaddr gethostbyname)); 439define('ERRNO', 'E', 440 qw(getnetent getnetbyaddr getnetbyname)); 441 442# The following loop accumulates the "ssif" (struct, size, init, free) 443# sections that declare the struct members (in reentr.h), and the buffer 444# size initialization, buffer initialization (malloc), and buffer 445# release (free) code (in reentr.c). 446# 447# The loop also contains a lot of intrinsic logic about groups of 448# functions (since functions of certain kind operate the same way). 449 450for my $func (@seenf) { 451 my $FUNC = uc $func; 452 my $ifdef = "#ifdef HAS_${FUNC}_R\n"; 453 my $endif = "#endif /* HAS_${FUNC}_R */\n"; 454 if (exists $seena{$func}) { 455 my @p = @{$seena{$func}}; 456 if ($func =~ /^(asctime|ctime|getlogin|setlocale|strerror|ttyname)$/) { 457 pushssif $ifdef; 458 push @struct, <<EOF; 459 char* _${func}_buffer; 460 size_t _${func}_size; 461EOF 462 push @size, <<EOF; 463 PL_reentrant_buffer->_${func}_size = REENTRANTSMALLSIZE; 464EOF 465 pushinitfree $func; 466 pushssif $endif; 467 } 468 elsif ($func =~ /^(crypt)$/) { 469 pushssif $ifdef; 470 push @struct, <<EOF; 471#if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD 472 $seend{$func} _${func}_data; 473#else 474 $seent{$func} _${func}_struct; 475#endif 476EOF 477 push @init, <<EOF; 478#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD 479 PL_reentrant_buffer->_${func}_struct_buffer = 0; 480#endif 481EOF 482 push @free, <<EOF; 483#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD 484 Safefree(PL_reentrant_buffer->_${func}_struct_buffer); 485#endif 486EOF 487 pushssif $endif; 488 } 489 elsif ($func =~ /^(drand48|gmtime|localtime)$/) { 490 pushssif $ifdef; 491 push @struct, <<EOF; 492 $seent{$func} _${func}_struct; 493EOF 494 if ($1 eq 'drand48') { 495 push @struct, <<EOF; 496 double _${func}_double; 497EOF 498 } 499 pushssif $endif; 500 } 501 elsif ($func =~ /^random$/) { 502 pushssif $ifdef; 503 push @struct, <<EOF; 504# if RANDOM_R_PROTO != REENTRANT_PROTO_I_St 505 $seent{$func} _${func}_struct; 506# endif 507EOF 508 pushssif $endif; 509 } 510 elsif ($func =~ /^(getgrnam|getpwnam|getspnam)$/) { 511 pushssif $ifdef; 512 # 'genfunc' can be read either as 'generic' or 'genre', 513 # it represents a group of functions. 514 my $genfunc = $func; 515 $genfunc =~ s/nam/ent/g; 516 $genfunc =~ s/^get//; 517 my $GENFUNC = uc $genfunc; 518 push @struct, <<EOF; 519 $seent{$func} _${genfunc}_struct; 520 char* _${genfunc}_buffer; 521 size_t _${genfunc}_size; 522EOF 523 push @struct, <<EOF; 524# ifdef USE_${GENFUNC}_PTR 525 $seent{$func}* _${genfunc}_ptr; 526# endif 527EOF 528 push @struct, <<EOF; 529# ifdef USE_${GENFUNC}_FPTR 530 FILE* _${genfunc}_fptr; 531# endif 532EOF 533 push @init, <<EOF; 534# ifdef USE_${GENFUNC}_FPTR 535 PL_reentrant_buffer->_${genfunc}_fptr = NULL; 536# endif 537EOF 538 my $sc = $genfunc eq 'grent' ? 539 '_SC_GETGR_R_SIZE_MAX' : '_SC_GETPW_R_SIZE_MAX'; 540 my $sz = "_${genfunc}_size"; 541 push @size, <<EOF; 542# if defined(HAS_SYSCONF) && defined($sc) && !defined(__GLIBC__) 543 PL_reentrant_buffer->$sz = sysconf($sc); 544 if (PL_reentrant_buffer->$sz == -1) 545 PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE; 546# else 547# if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ) 548 PL_reentrant_buffer->$sz = SIABUFSIZ; 549# else 550# ifdef __sgi 551 PL_reentrant_buffer->$sz = BUFSIZ; 552# else 553 PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE; 554# endif 555# endif 556# endif 557EOF 558 pushinitfree $genfunc; 559 pushssif $endif; 560 } 561 elsif ($func =~ /^(gethostbyname|getnetbyname|getservbyname|getprotobyname)$/) { 562 pushssif $ifdef; 563 my $genfunc = $func; 564 $genfunc =~ s/byname/ent/; 565 $genfunc =~ s/^get//; 566 my $GENFUNC = uc $genfunc; 567 my $D = ifprotomatch($FUNC, grep {/D/} @p); 568 my $d = $seend{$func}; 569 $d =~ s/\*$//; # snip: we need need the base type. 570 push @struct, <<EOF; 571 $seent{$func} _${genfunc}_struct; 572# if $D 573 $d _${genfunc}_data; 574# else 575 char* _${genfunc}_buffer; 576 size_t _${genfunc}_size; 577# endif 578# ifdef USE_${GENFUNC}_PTR 579 $seent{$func}* _${genfunc}_ptr; 580# endif 581EOF 582 push @struct, <<EOF; 583# ifdef USE_${GENFUNC}_ERRNO 584 int _${genfunc}_errno; 585# endif 586EOF 587 push @size, <<EOF; 588#if !($D) 589 PL_reentrant_buffer->_${genfunc}_size = REENTRANTUSUALSIZE; 590#endif 591EOF 592 push @init, <<EOF; 593#if !($D) 594 Newx(PL_reentrant_buffer->_${genfunc}_buffer, PL_reentrant_buffer->_${genfunc}_size, char); 595#endif 596EOF 597 push @free, <<EOF; 598#if !($D) 599 Safefree(PL_reentrant_buffer->_${genfunc}_buffer); 600#endif 601EOF 602 pushssif $endif; 603 } 604 elsif ($func =~ /^(readdir|readdir64)$/) { 605 pushssif $ifdef; 606 my $R = ifprotomatch($FUNC, grep {/R/} @p); 607 push @struct, <<EOF; 608 $seent{$func}* _${func}_struct; 609 size_t _${func}_size; 610# if $R 611 $seent{$func}* _${func}_ptr; 612# endif 613EOF 614 push @size, <<EOF; 615 /* This is the size Solaris recommends. 616 * (though we go static, should use pathconf() instead) */ 617 PL_reentrant_buffer->_${func}_size = sizeof($seent{$func}) + MAXPATHLEN + 1; 618EOF 619 push @init, <<EOF; 620 PL_reentrant_buffer->_${func}_struct = ($seent{$func}*)safemalloc(PL_reentrant_buffer->_${func}_size); 621EOF 622 push @free, <<EOF; 623 Safefree(PL_reentrant_buffer->_${func}_struct); 624EOF 625 pushssif $endif; 626 } 627 628 push @wrap, $ifdef; 629 630 push @wrap, <<EOF; 631# undef $func 632EOF 633 634 # Write out what we have learned. 635 636 my @v = 'a'..'z'; 637 my $v = join(", ", @v[0..$seenu{$func}-1]); 638 for my $p (@p) { 639 my ($r, $a) = split '_', $p; 640 my $test = $r eq 'I' ? ' == 0' : ''; 641 my $true = 1; 642 my $genfunc = $func; 643 if ($genfunc =~ /^(?:get|set|end)(pw|gr|host|net|proto|serv|sp)/) { 644 $genfunc = "${1}ent"; 645 } elsif ($genfunc eq 'srand48') { 646 $genfunc = "drand48"; 647 } 648 my $b = $a; 649 my $w = ''; 650 substr($b, 0, $seenu{$func}) = ''; 651 if ($func =~ /^random$/) { 652 $true = "PL_reentrant_buffer->_random_retval"; 653 } elsif ($b =~ /R/) { 654 $true = "PL_reentrant_buffer->_${genfunc}_ptr"; 655 } elsif ($b =~ /T/ && $func eq 'drand48') { 656 $true = "PL_reentrant_buffer->_${genfunc}_double"; 657 } elsif ($b =~ /S/) { 658 if ($func =~ /^readdir/) { 659 $true = "PL_reentrant_buffer->_${genfunc}_struct"; 660 } else { 661 $true = "&PL_reentrant_buffer->_${genfunc}_struct"; 662 } 663 } elsif ($b =~ /B/) { 664 $true = "PL_reentrant_buffer->_${genfunc}_buffer"; 665 } 666 if (length $b) { 667 $w = join ", ", 668 map { 669 $_ eq 'R' ? 670 "&PL_reentrant_buffer->_${genfunc}_ptr" : 671 $_ eq 'E' ? 672 "&PL_reentrant_buffer->_${genfunc}_errno" : 673 $_ eq 'B' ? 674 "PL_reentrant_buffer->_${genfunc}_buffer" : 675 $_ =~ /^[WI]$/ ? 676 "PL_reentrant_buffer->_${genfunc}_size" : 677 $_ eq 'H' ? 678 "&PL_reentrant_buffer->_${genfunc}_fptr" : 679 $_ eq 'D' ? 680 "&PL_reentrant_buffer->_${genfunc}_data" : 681 $_ eq 'S' ? 682 ($func =~ /^readdir\d*$/ ? 683 "PL_reentrant_buffer->_${genfunc}_struct" : 684 $func =~ /^crypt$/ ? 685 "PL_reentrant_buffer->_${genfunc}_struct_buffer" : 686 "&PL_reentrant_buffer->_${genfunc}_struct") : 687 $_ eq 'T' && $func eq 'drand48' ? 688 "&PL_reentrant_buffer->_${genfunc}_double" : 689 $_ =~ /^[ilt]$/ && $func eq 'random' ? 690 "&PL_reentrant_buffer->_random_retval" : 691 $_ 692 } split '', $b; 693 $w = ", $w" if length $v; 694 } 695 my $call = "${func}_r($v$w)"; 696 697 # Must make OpenBSD happy 698 my $memzero = ''; 699 if($p =~ /D$/ && 700 ($genfunc eq 'protoent' || $genfunc eq 'servent')) { 701 $memzero = 'REENTR_MEMZERO(&PL_reentrant_buffer->_' . $genfunc . '_data, sizeof(PL_reentrant_buffer->_' . $genfunc . '_data))'; 702 } 703 push @wrap, <<EOF; 704# if !defined($func) && ${FUNC}_R_PROTO == REENTRANT_PROTO_$p 705EOF 706 if ($r eq 'V' || $r eq 'B') { 707 push @wrap, <<EOF; 708# define $func($v) $call 709EOF 710 } else { 711 if ($func =~ /^get/) { 712 my $rv = $v ? ", $v" : ""; 713 if ($r eq 'I') { 714 $call = qq[((PL_REENTRANT_RETINT = $call)$test ? $true : (((PL_REENTRANT_RETINT == ERANGE) || (errno == ERANGE)) ? ($seenm{$func}{$seenr{$func}})Perl_reentrant_retry("$func"$rv) : 0))]; 715 my $arg = join(", ", map { $seenm{$func}{substr($a,$_,1)}." ".$v[$_] } 0..$seenu{$func}-1); 716 my $ret = $seenr{$func} eq 'V' ? "" : "return "; 717 my $memzero_ = $memzero ? "$memzero, " : ""; 718 push @wrap, <<EOF; 719# ifdef PERL_CORE 720# define $func($v) ($memzero_$call) 721# else 722# if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC) 723# define $func($v) ({int PL_REENTRANT_RETINT; $memzero; $call;}) 724# else 725# define $func($v) Perl_reentr_$func($v) 726 static $seenm{$func}{$seenr{$func}} Perl_reentr_$func($arg) { 727 dTHX; 728 int PL_REENTRANT_RETINT; 729 $memzero; 730 $ret$call; 731 } 732# endif 733# endif 734EOF 735 } else { 736 push @wrap, <<EOF; 737# define $func($v) ($call$test ? $true : ((errno == ERANGE) ? ($seent{$func} *) Perl_reentrant_retry("$func"$rv) : 0)) 738EOF 739 } 740 } else { 741 push @wrap, <<EOF; 742# define $func($v) ($call$test ? $true : 0) 743EOF 744 } 745 } 746 push @wrap, <<EOF; 747# endif 748EOF 749 } 750 751 push @wrap, $endif, "\n"; 752 } 753} 754 755# New struct members added here to maintain binary compatibility with 5.8.0 756 757if (exists $seena{crypt}) { 758 push @struct, <<EOF; 759#ifdef HAS_CRYPT_R 760#if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD 761#else 762 struct crypt_data *_crypt_struct_buffer; 763#endif 764#endif /* HAS_CRYPT_R */ 765EOF 766} 767 768if (exists $seena{random}) { 769 push @struct, <<EOF; 770#ifdef HAS_RANDOM_R 771# if RANDOM_R_PROTO == REENTRANT_PROTO_I_iS 772 int _random_retval; 773# endif 774# if RANDOM_R_PROTO == REENTRANT_PROTO_I_lS 775 long _random_retval; 776# endif 777# if RANDOM_R_PROTO == REENTRANT_PROTO_I_St 778 $seent{random} _random_struct; 779 int32_t _random_retval; 780# endif 781#endif /* HAS_RANDOM_R */ 782EOF 783} 784 785if (exists $seena{srandom}) { 786 push @struct, <<EOF; 787#ifdef HAS_SRANDOM_R 788 $seent{srandom} _srandom_struct; 789#endif /* HAS_SRANDOM_R */ 790EOF 791} 792 793 794local $" = ''; 795 796print <<EOF; 797 798/* Defines for indicating which special features are supported. */ 799 800@define 801typedef struct { 802@struct 803 int dummy; /* cannot have empty structs */ 804} REENTR; 805 806#endif /* USE_REENTRANT_API */ 807 808#endif 809EOF 810 811close(H); 812 813die "reentr.inc: $!" unless open(H, ">reentr.inc"); 814select H; 815 816local $" = ''; 817 818print <<EOF; 819/* 820 * reentr.inc 821 * 822 * You may distribute under the terms of either the GNU General Public 823 * License or the Artistic License, as specified in the README file. 824 * 825 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!! 826 * This file is built by reentrl.pl from data in reentr.pl. 827 */ 828 829#ifndef REENTRINC 830#define REENTRINC 831 832#ifdef USE_REENTRANT_API 833 834/* 835 * As of OpenBSD 3.7, reentrant functions are now working, they just are 836 * incompatible with everyone else. To make OpenBSD happy, we have to 837 * memzero out certain structures before calling the functions. 838 */ 839#if defined(__OpenBSD__) 840# define REENTR_MEMZERO(a,b) memzero(a,b) 841#else 842# define REENTR_MEMZERO(a,b) 0 843#endif 844 845/* The reentrant wrappers. */ 846 847@wrap 848 849#endif /* USE_REENTRANT_API */ 850 851#endif 852 853/* ex: set ro: */ 854EOF 855 856close(H); 857 858# Prepare to write the reentr.c. 859 860safer_unlink 'reentr.c'; 861die "reentr.c: $!" unless open(C, ">reentr.c"); 862binmode C; 863select C; 864print <<EOF; 865/* -*- buffer-read-only: t -*- 866 * 867 * reentr.c 868 * 869 * Copyright (C) 2002, 2003, 2005, 2006 by Larry Wall and others 870 * 871 * You may distribute under the terms of either the GNU General Public 872 * License or the Artistic License, as specified in the README file. 873 * 874 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!! 875 * This file is built by reentr.pl from data in reentr.pl. 876 * 877 * "Saruman," I said, standing away from him, "only one hand at a time can 878 * wield the One, and you know that well, so do not trouble to say we!" 879 * 880 * This file contains a collection of automatically created wrappers 881 * (created by running reentr.pl) for reentrant (thread-safe) versions of 882 * various library calls, such as getpwent_r. The wrapping is done so 883 * that other files like pp_sys.c calling those library functions need not 884 * care about the differences between various platforms' idiosyncrasies 885 * regarding these reentrant interfaces. 886 */ 887 888#include "EXTERN.h" 889#define PERL_IN_REENTR_C 890#include "perl.h" 891#include "reentr.h" 892 893void 894Perl_reentrant_size(pTHX) { 895#ifdef USE_REENTRANT_API 896#define REENTRANTSMALLSIZE 256 /* Make something up. */ 897#define REENTRANTUSUALSIZE 4096 /* Make something up. */ 898@size 899#endif /* USE_REENTRANT_API */ 900} 901 902void 903Perl_reentrant_init(pTHX) { 904#ifdef USE_REENTRANT_API 905 Newx(PL_reentrant_buffer, 1, REENTR); 906 Perl_reentrant_size(aTHX); 907@init 908#endif /* USE_REENTRANT_API */ 909} 910 911void 912Perl_reentrant_free(pTHX) { 913#ifdef USE_REENTRANT_API 914@free 915 Safefree(PL_reentrant_buffer); 916#endif /* USE_REENTRANT_API */ 917} 918 919void* 920Perl_reentrant_retry(const char *f, ...) 921{ 922 dTHX; 923 void *retptr = NULL; 924#ifdef USE_REENTRANT_API 925# 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) 926 void *p0; 927# endif 928# if defined(USE_SERVENT_BUFFER) 929 void *p1; 930# endif 931# if defined(USE_HOSTENT_BUFFER) 932 size_t asize; 933# endif 934# if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER) 935 int anint; 936# endif 937 va_list ap; 938 939 va_start(ap, f); 940 941 switch (PL_op->op_type) { 942#ifdef USE_HOSTENT_BUFFER 943 case OP_GHBYADDR: 944 case OP_GHBYNAME: 945 case OP_GHOSTENT: 946 { 947#ifdef PERL_REENTRANT_MAXSIZE 948 if (PL_reentrant_buffer->_hostent_size <= 949 PERL_REENTRANT_MAXSIZE / 2) 950#endif 951 { 952 PL_reentrant_buffer->_hostent_size *= 2; 953 Renew(PL_reentrant_buffer->_hostent_buffer, 954 PL_reentrant_buffer->_hostent_size, char); 955 switch (PL_op->op_type) { 956 case OP_GHBYADDR: 957 p0 = va_arg(ap, void *); 958 asize = va_arg(ap, size_t); 959 anint = va_arg(ap, int); 960 retptr = gethostbyaddr(p0, asize, anint); break; 961 case OP_GHBYNAME: 962 p0 = va_arg(ap, void *); 963 retptr = gethostbyname((char *)p0); break; 964 case OP_GHOSTENT: 965 retptr = gethostent(); break; 966 default: 967 SETERRNO(ERANGE, LIB_INVARG); 968 break; 969 } 970 } 971 } 972 break; 973#endif 974#ifdef USE_GRENT_BUFFER 975 case OP_GGRNAM: 976 case OP_GGRGID: 977 case OP_GGRENT: 978 { 979#ifdef PERL_REENTRANT_MAXSIZE 980 if (PL_reentrant_buffer->_grent_size <= 981 PERL_REENTRANT_MAXSIZE / 2) 982#endif 983 { 984 Gid_t gid; 985 PL_reentrant_buffer->_grent_size *= 2; 986 Renew(PL_reentrant_buffer->_grent_buffer, 987 PL_reentrant_buffer->_grent_size, char); 988 switch (PL_op->op_type) { 989 case OP_GGRNAM: 990 p0 = va_arg(ap, void *); 991 retptr = getgrnam((char *)p0); break; 992 case OP_GGRGID: 993#if Gid_t_size < INTSIZE 994 gid = (Gid_t)va_arg(ap, int); 995#else 996 gid = va_arg(ap, Gid_t); 997#endif 998 retptr = getgrgid(gid); break; 999 case OP_GGRENT: 1000 retptr = getgrent(); break; 1001 default: 1002 SETERRNO(ERANGE, LIB_INVARG); 1003 break; 1004 } 1005 } 1006 } 1007 break; 1008#endif 1009#ifdef USE_NETENT_BUFFER 1010 case OP_GNBYADDR: 1011 case OP_GNBYNAME: 1012 case OP_GNETENT: 1013 { 1014#ifdef PERL_REENTRANT_MAXSIZE 1015 if (PL_reentrant_buffer->_netent_size <= 1016 PERL_REENTRANT_MAXSIZE / 2) 1017#endif 1018 { 1019 Netdb_net_t net; 1020 PL_reentrant_buffer->_netent_size *= 2; 1021 Renew(PL_reentrant_buffer->_netent_buffer, 1022 PL_reentrant_buffer->_netent_size, char); 1023 switch (PL_op->op_type) { 1024 case OP_GNBYADDR: 1025 net = va_arg(ap, Netdb_net_t); 1026 anint = va_arg(ap, int); 1027 retptr = getnetbyaddr(net, anint); break; 1028 case OP_GNBYNAME: 1029 p0 = va_arg(ap, void *); 1030 retptr = getnetbyname((char *)p0); break; 1031 case OP_GNETENT: 1032 retptr = getnetent(); break; 1033 default: 1034 SETERRNO(ERANGE, LIB_INVARG); 1035 break; 1036 } 1037 } 1038 } 1039 break; 1040#endif 1041#ifdef USE_PWENT_BUFFER 1042 case OP_GPWNAM: 1043 case OP_GPWUID: 1044 case OP_GPWENT: 1045 { 1046#ifdef PERL_REENTRANT_MAXSIZE 1047 if (PL_reentrant_buffer->_pwent_size <= 1048 PERL_REENTRANT_MAXSIZE / 2) 1049#endif 1050 { 1051 Uid_t uid; 1052 PL_reentrant_buffer->_pwent_size *= 2; 1053 Renew(PL_reentrant_buffer->_pwent_buffer, 1054 PL_reentrant_buffer->_pwent_size, char); 1055 switch (PL_op->op_type) { 1056 case OP_GPWNAM: 1057 p0 = va_arg(ap, void *); 1058 retptr = getpwnam((char *)p0); break; 1059 case OP_GPWUID: 1060#if Uid_t_size < INTSIZE 1061 uid = (Uid_t)va_arg(ap, int); 1062#else 1063 uid = va_arg(ap, Uid_t); 1064#endif 1065 retptr = getpwuid(uid); break; 1066 case OP_GPWENT: 1067 retptr = getpwent(); break; 1068 default: 1069 SETERRNO(ERANGE, LIB_INVARG); 1070 break; 1071 } 1072 } 1073 } 1074 break; 1075#endif 1076#ifdef USE_PROTOENT_BUFFER 1077 case OP_GPBYNAME: 1078 case OP_GPBYNUMBER: 1079 case OP_GPROTOENT: 1080 { 1081#ifdef PERL_REENTRANT_MAXSIZE 1082 if (PL_reentrant_buffer->_protoent_size <= 1083 PERL_REENTRANT_MAXSIZE / 2) 1084#endif 1085 { 1086 PL_reentrant_buffer->_protoent_size *= 2; 1087 Renew(PL_reentrant_buffer->_protoent_buffer, 1088 PL_reentrant_buffer->_protoent_size, char); 1089 switch (PL_op->op_type) { 1090 case OP_GPBYNAME: 1091 p0 = va_arg(ap, void *); 1092 retptr = getprotobyname((char *)p0); break; 1093 case OP_GPBYNUMBER: 1094 anint = va_arg(ap, int); 1095 retptr = getprotobynumber(anint); break; 1096 case OP_GPROTOENT: 1097 retptr = getprotoent(); break; 1098 default: 1099 SETERRNO(ERANGE, LIB_INVARG); 1100 break; 1101 } 1102 } 1103 } 1104 break; 1105#endif 1106#ifdef USE_SERVENT_BUFFER 1107 case OP_GSBYNAME: 1108 case OP_GSBYPORT: 1109 case OP_GSERVENT: 1110 { 1111#ifdef PERL_REENTRANT_MAXSIZE 1112 if (PL_reentrant_buffer->_servent_size <= 1113 PERL_REENTRANT_MAXSIZE / 2) 1114#endif 1115 { 1116 PL_reentrant_buffer->_servent_size *= 2; 1117 Renew(PL_reentrant_buffer->_servent_buffer, 1118 PL_reentrant_buffer->_servent_size, char); 1119 switch (PL_op->op_type) { 1120 case OP_GSBYNAME: 1121 p0 = va_arg(ap, void *); 1122 p1 = va_arg(ap, void *); 1123 retptr = getservbyname((char *)p0, (char *)p1); break; 1124 case OP_GSBYPORT: 1125 anint = va_arg(ap, int); 1126 p0 = va_arg(ap, void *); 1127 retptr = getservbyport(anint, (char *)p0); break; 1128 case OP_GSERVENT: 1129 retptr = getservent(); break; 1130 default: 1131 SETERRNO(ERANGE, LIB_INVARG); 1132 break; 1133 } 1134 } 1135 } 1136 break; 1137#endif 1138 default: 1139 /* Not known how to retry, so just fail. */ 1140 break; 1141 } 1142 1143 va_end(ap); 1144#endif 1145 return retptr; 1146} 1147 1148/* ex: set ro: */ 1149EOF 1150 1151__DATA__ 1152asctime B_S |time |const struct tm|B_SB|B_SBI|I_SB|I_SBI 1153crypt B_CC |crypt |struct crypt_data|B_CCS|B_CCD|D=CRYPTD* 1154ctermid B_B |stdio | |B_B 1155ctime B_S |time |const time_t |B_SB|B_SBI|I_SB|I_SBI 1156drand48 d_V |stdlib |struct drand48_data |I_ST|T=double*|d=double 1157endgrent |grp | |I_H|V_H 1158endhostent |netdb | |I_D|V_D|D=struct hostent_data* 1159endnetent |netdb | |I_D|V_D|D=struct netent_data* 1160endprotoent |netdb | |I_D|V_D|D=struct protoent_data* 1161endpwent |pwd | |I_H|V_H 1162endservent |netdb | |I_D|V_D|D=struct servent_data* 1163getgrent S_V |grp |struct group |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH 1164getgrgid S_T |grp |struct group |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=gid_t 1165getgrnam S_C |grp |struct group |I_CSBWR|I_CSBIR|S_CBI|I_CSBI|S_CSBI 1166gethostbyaddr S_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 1167gethostbyname S_C |netdb |struct hostent |I_CSBWRE|S_CSBIE|I_CSD|D=struct hostent_data* 1168gethostent S_V |netdb |struct hostent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct hostent_data* 1169getlogin B_V |unistd |char |I_BW|I_BI|B_BW|B_BI 1170getnetbyaddr S_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 1171getnetbyname S_C |netdb |struct netent |I_CSBWRE|I_CSBI|S_CSBI|I_CSD|D=struct netent_data* 1172getnetent S_V |netdb |struct netent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct netent_data* 1173getprotobyname S_C |netdb |struct protoent|I_CSBWR|S_CSBI|I_CSD|D=struct protoent_data* 1174getprotobynumber S_I |netdb |struct protoent|I_ISBWR|S_ISBI|I_ISD|D=struct protoent_data* 1175getprotoent S_V |netdb |struct protoent|I_SBWR|I_SBI|S_SBI|I_SD|D=struct protoent_data* 1176getpwent S_V |pwd |struct passwd |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH 1177getpwnam S_C |pwd |struct passwd |I_CSBWR|I_CSBIR|S_CSBI|I_CSBI 1178getpwuid S_T |pwd |struct passwd |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=uid_t 1179getservbyname S_CC |netdb |struct servent |I_CCSBWR|S_CCSBI|I_CCSD|D=struct servent_data* 1180getservbyport S_IC |netdb |struct servent |I_ICSBWR|S_ICSBI|I_ICSD|D=struct servent_data* 1181getservent S_V |netdb |struct servent |I_SBWR|I_SBI|S_SBI|I_SD|D=struct servent_data* 1182getspnam S_C |shadow |struct spwd |I_CSBWR|S_CSBI 1183gmtime S_T |time |struct tm |S_TS|I_TS|T=const time_t* 1184localtime S_T |time |struct tm |S_TS|I_TS|T=const time_t* 1185random L_V |stdlib |struct random_data|I_iS|I_lS|I_St|i=int*|l=long*|t=int32_t* 1186readdir S_T |dirent |struct dirent |I_TSR|I_TS|T=DIR* 1187readdir64 S_T |dirent |struct dirent64|I_TSR|I_TS|T=DIR* 1188setgrent |grp | |I_H|V_H 1189sethostent V_I |netdb | |I_ID|V_ID|D=struct hostent_data* 1190setlocale B_IC |locale | |I_ICBI 1191setnetent V_I |netdb | |I_ID|V_ID|D=struct netent_data* 1192setprotoent V_I |netdb | |I_ID|V_ID|D=struct protoent_data* 1193setpwent |pwd | |I_H|V_H 1194setservent V_I |netdb | |I_ID|V_ID|D=struct servent_data* 1195srand48 V_L |stdlib |struct drand48_data |I_LS 1196srandom V_T |stdlib |struct random_data|I_TS|T=unsigned int 1197strerror B_I |string | |I_IBW|I_IBI|B_IBW 1198tmpnam B_B |stdio | |B_B 1199ttyname B_I |unistd | |I_IBW|I_IBI|B_IBI 1200