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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
8use strict;
9use Getopt::Std;
10my %opts;
11getopts('U', \%opts);
12
13my %map = (
14 V => "void",
15 A => "char*", # as an input argument
16 B => "char*", # as an output argument
17 C => "const char*", # as a read-only input argument
18 I => "int",
19 L => "long",
20 W => "size_t",
21 H => "FILE**",
22 E => "int*",
23 );
24
25# (See the definitions after __DATA__.)
26# In func|inc|type|... a "S" means "type*", and a "R" means "type**".
27# (The "types" are often structs, such as "struct passwd".)
28#
29# After the prototypes one can have |X=...|Y=... to define more types.
30# A commonly used extra type is to define D to be equal to "type_data",
31# for example "struct_hostent_data to" go with "struct hostent".
32#
33# Example #1: I_XSBWR means int func_r(X, type, char*, size_t, type**)
34# Example #2: S_SBIE means type func_r(type, char*, int, int*)
35# Example #3: S_CBI means type func_r(const char*, char*, int)
36
37
38die "reentr.h: $!" unless open(H, ">reentr.h");
39select H;
40print <<EOF;
41/*
42 * reentr.h
43 *
4c79ee7a 44 * Copyright (c) 1997-2003, Larry Wall
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45 *
46 * You may distribute under the terms of either the GNU General Public
47 * License or the Artistic License, as specified in the README file.
48 *
49 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
50 * This file is built by reentrl.pl from data in reentr.pl.
51 */
52
53#ifndef REENTR_H
54#define REENTR_H
55
56#ifdef USE_REENTRANT_API
57
58/* Deprecations: some platforms have the said reentrant interfaces
59 * but they are declared obsolete and are not to be used. Often this
60 * means that the platform has threadsafed the interfaces (hopefully).
61 * All this is OS version dependent, so we are of course fooling ourselves.
62 * If you know of more deprecations on some platforms, please add your own. */
63
64#ifdef __hpux
65# undef HAS_CRYPT_R
66# undef HAS_DRAND48_R
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67# undef HAS_ENDGRENT_R
68# undef HAS_ENDPWENT_R
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69# undef HAS_GETGRENT_R
70# undef HAS_GETPWENT_R
71# undef HAS_SETLOCALE_R
72# undef HAS_SRAND48_R
73# undef HAS_STRERROR_R
74# define NETDB_R_OBSOLETE
75#endif
76
77#if defined(__osf__) && defined(__alpha) /* Tru64 aka Digital UNIX */
78# undef HAS_CRYPT_R
79# undef HAS_STRERROR_R
80# define NETDB_R_OBSOLETE
81#endif
82
83#ifdef NETDB_R_OBSOLETE
84# undef HAS_ENDHOSTENT_R
85# undef HAS_ENDNETENT_R
86# undef HAS_ENDPROTOENT_R
87# undef HAS_ENDSERVENT_R
88# undef HAS_GETHOSTBYADDR_R
89# undef HAS_GETHOSTBYNAME_R
90# undef HAS_GETHOSTENT_R
91# undef HAS_GETNETBYADDR_R
92# undef HAS_GETNETBYNAME_R
93# undef HAS_GETNETENT_R
94# undef HAS_GETPROTOBYNAME_R
95# undef HAS_GETPROTOBYNUMBER_R
96# undef HAS_GETPROTOENT_R
97# undef HAS_GETSERVBYNAME_R
98# undef HAS_GETSERVBYPORT_R
99# undef HAS_GETSERVENT_R
100# undef HAS_SETHOSTENT_R
101# undef HAS_SETNETENT_R
102# undef HAS_SETPROTOENT_R
103# undef HAS_SETSERVENT_R
104#endif
105
106#ifdef I_PWD
107# include <pwd.h>
108#endif
109#ifdef I_GRP
110# include <grp.h>
111#endif
112#ifdef I_NETDB
113# include <netdb.h>
114#endif
115#ifdef I_STDLIB
116# include <stdlib.h> /* drand48_data */
117#endif
118#ifdef I_CRYPT
119# ifdef I_CRYPT
120# include <crypt.h>
121# endif
122#endif
123#ifdef HAS_GETSPNAM_R
124# ifdef I_SHADOW
125# include <shadow.h>
126# endif
127#endif
128
129EOF
130
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131my %seenh; # the different prototypes signatures for this function
132my %seena; # the different prototypes signatures for this function in order
133my @seenf; # all the seen functions
134my %seenp; # the different prototype signatures for all functions
135my %seent; # the return type of this function
136my %seens; # the type of this function's "S"
137my %seend; # the type of this function's "D"
a845a0d4 138my %seenm; # all the types
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139my %seenu; # the length of the argument list of this function
140
141while (<DATA>) { # Read in the protypes.
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142 next if /^\s+$/;
143 chomp;
aa418cf1 144 my ($func, $hdr, $type, @p) = split(/\s*\|\s*/, $_, -1);
10bc17b6 145 my $u;
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146 # Split off the real function name and the argument list.
147 ($func, $u) = split(' ', $func);
148 $seenu{$func} = defined $u ? length $u : 0;
149 my $FUNC = uc $func; # for output.
150 push @seenf, $func;
10bc17b6 151 my %m = %map;
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152 if ($type) {
153 $m{S} = "$type*";
154 $m{R} = "$type**";
10bc17b6 155 }
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156
157 # Set any special mapping variables (like X=x_t)
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158 if (@p) {
159 while ($p[-1] =~ /=/) {
160 my ($k, $v) = ($p[-1] =~ /^([A-Za-z])\s*=\s*(.*)/);
161 $m{$k} = $v;
162 pop @p;
163 }
164 }
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165
166 # If given the -U option open up the metaconfig unit for this function.
167 if ($opts{U} && open(U, ">d_${func}_r.U")) {
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168 select U;
169 }
aa418cf1 170
d63eadf0 171 if ($opts{U}) {
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172 # The metaconfig units needs prerequisite dependencies.
173 my $prereqs = '';
174 my $prereqh = '';
175 my $prereqsh = '';
176 if ($hdr ne 'stdio') { # There's no i_stdio.
177 $prereqs = "i_$hdr";
178 $prereqh = "$hdr.h";
179 $prereqsh = "\$$prereqs $prereqh";
180 }
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181 my @prereq = qw(Inlibc Protochk Hasproto i_systypes usethreads);
182 push @prereq, $prereqs;
183 my $hdrs = "\$i_systypes sys/types.h define stdio.h $prereqsh";
aa418cf1 184 if ($hdr eq 'time') {
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185 $hdrs .= " \$i_systime sys/time.h";
186 push @prereq, 'i_systime';
187 }
aa418cf1 188 # Output the metaconfig unit header.
d63eadf0 189 print <<EOF;
aa418cf1 190?RCS: \$Id: d_${func}_r.U,v $
10bc17b6 191?RCS:
a845a0d4 192?RCS: Copyright (c) 2002,2003 Jarkko Hietaniemi
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193?RCS:
194?RCS: You may distribute under the terms of either the GNU General Public
195?RCS: License or the Artistic License, as specified in the README file.
196?RCS:
197?RCS: Generated by the reentr.pl from the Perl 5.8 distribution.
198?RCS:
aa418cf1 199?MAKE:d_${func}_r ${func}_r_proto: @prereq
10bc17b6 200?MAKE: -pick add \$@ %<
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201?S:d_${func}_r:
202?S: This variable conditionally defines the HAS_${FUNC}_R symbol,
203?S: which indicates to the C program that the ${func}_r()
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204?S: routine is available.
205?S:.
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206?S:${func}_r_proto:
207?S: This variable encodes the prototype of ${func}_r.
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208?S: It is zero if d_${func}_r is undef, and one of the
209?S: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
210?S: is defined.
10bc17b6 211?S:.
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212?C:HAS_${FUNC}_R:
213?C: This symbol, if defined, indicates that the ${func}_r routine
214?C: is available to ${func} re-entrantly.
10bc17b6 215?C:.
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216?C:${FUNC}_R_PROTO:
217?C: This symbol encodes the prototype of ${func}_r.
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218?C: It is zero if d_${func}_r is undef, and one of the
219?C: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
220?C: is defined.
10bc17b6 221?C:.
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222?H:#\$d_${func}_r HAS_${FUNC}_R /**/
223?H:#define ${FUNC}_R_PROTO \$${func}_r_proto /**/
10bc17b6 224?H:.
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225?T:try hdrs d_${func}_r_proto
226?LINT:set d_${func}_r
227?LINT:set ${func}_r_proto
228: see if ${func}_r exists
229set ${func}_r d_${func}_r
10bc17b6 230eval \$inlibc
aa418cf1 231case "\$d_${func}_r" in
10bc17b6 232"\$define")
d63eadf0 233EOF
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234 print <<EOF;
235 hdrs="$hdrs"
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236 case "\$d_${func}_r_proto:\$usethreads" in
237 ":define") d_${func}_r_proto=define
238 set d_${func}_r_proto ${func}_r \$hdrs
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239 eval \$hasproto ;;
240 *) ;;
241 esac
aa418cf1 242 case "\$d_${func}_r_proto" in
a48ec845 243 define)
10bc17b6 244EOF
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245 }
246 for my $p (@p) {
247 my ($r, $a) = ($p =~ /^(.)_(.+)/);
248 my $v = join(", ", map { $m{$_} } split '', $a);
249 if ($opts{U}) {
250 print <<EOF ;
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251 case "\$${func}_r_proto" in
252 ''|0) try='$m{$r} ${func}_r($v);'
253 ./protochk "extern \$try" \$hdrs && ${func}_r_proto=$p ;;
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254 esac
255EOF
d63eadf0 256 }
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257 $seenh{$func}->{$p}++;
258 push @{$seena{$func}}, $p;
d63eadf0 259 $seenp{$p}++;
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260 $seent{$func} = $type;
261 $seens{$func} = $m{S};
262 $seend{$func} = $m{D};
a845a0d4 263 $seenm{$func} = \%m;
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264 }
265 if ($opts{U}) {
266 print <<EOF;
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267 case "\$${func}_r_proto" in
268 ''|0) d_${func}_r=undef
269 ${func}_r_proto=0
270 echo "Disabling ${func}_r, cannot determine prototype." >&4 ;;
271 * ) case "\$${func}_r_proto" in
10bc17b6 272 REENTRANT_PROTO*) ;;
aa418cf1 273 *) ${func}_r_proto="REENTRANT_PROTO_\$${func}_r_proto" ;;
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274 esac
275 echo "Prototype: \$try" ;;
276 esac
277 ;;
c18e646a 278 *) case "\$usethreads" in
aa418cf1 279 define) echo "${func}_r has no prototype, not using it." >&4 ;;
c18e646a 280 esac
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281 d_${func}_r=undef
282 ${func}_r_proto=0
c18e646a 283 ;;
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284 esac
285 ;;
aa418cf1 286*) ${func}_r_proto=0
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287 ;;
288esac
289
290EOF
291 close(U);
292 }
293}
294
295close DATA;
296
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297# Prepare to continue writing the reentr.h.
298
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299select H;
300
301{
aa418cf1 302 # Write out all the known prototype signatures.
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303 my $i = 1;
304 for my $p (sort keys %seenp) {
305 print "#define REENTRANT_PROTO_${p} ${i}\n";
306 $i++;
307 }
308}
309
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310my @struct; # REENTR struct members
311my @size; # struct member buffer size initialization code
312my @init; # struct member buffer initialization (malloc) code
313my @free; # struct member buffer release (free) code
314my @wrap; # the wrapper (foo(a) -> foo_r(a,...)) cpp code
315my @define; # defines for optional features
316
10bc17b6 317sub ifprotomatch {
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318 my $FUNC = shift;
319 join " || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @_;
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320}
321
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322sub pushssif {
323 push @struct, @_;
324 push @size, @_;
325 push @init, @_;
326 push @free, @_;
327}
328
329sub pushinitfree {
aa418cf1 330 my $func = shift;
10bc17b6 331 push @init, <<EOF;
aa418cf1 332 New(31338, PL_reentrant_buffer->_${func}_buffer, PL_reentrant_buffer->_${func}_size, char);
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333EOF
334 push @free, <<EOF;
aa418cf1 335 Safefree(PL_reentrant_buffer->_${func}_buffer);
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336EOF
337}
338
339sub define {
340 my ($n, $p, @F) = @_;
341 my @H;
342 my $H = uc $F[0];
343 push @define, <<EOF;
344/* The @F using \L$n? */
345
346EOF
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347 my $GENFUNC;
348 for my $func (@F) {
349 my $FUNC = uc $func;
350 my $HAS = "${FUNC}_R_HAS_$n";
351 push @H, $HAS;
352 my @h = grep { /$p/ } @{$seena{$func}};
353 unless (defined $GENFUNC) {
354 $GENFUNC = $FUNC;
355 $GENFUNC =~ s/^GET//;
f7937171 356 }
10bc17b6 357 if (@h) {
aa418cf1 358 push @define, "#if defined(HAS_${FUNC}_R) && (" . join(" || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @h) . ")\n";
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359
360 push @define, <<EOF;
aa418cf1 361# define $HAS
10bc17b6 362#else
aa418cf1 363# undef $HAS
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364#endif
365EOF
366 }
367 }
368 push @define, <<EOF;
369
370/* Any of the @F using \L$n? */
371
372EOF
373 push @define, "#if (" . join(" || ", map { "defined($_)" } @H) . ")\n";
374 push @define, <<EOF;
aa418cf1 375# define USE_${GENFUNC}_$n
10bc17b6 376#else
aa418cf1 377# undef USE_${GENFUNC}_$n
10bc17b6
JH
378#endif
379
380EOF
381}
382
edd309b7
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383define('BUFFER', 'B',
384 qw(getgrent getgrgid getgrnam));
385
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386define('PTR', 'R',
387 qw(getgrent getgrgid getgrnam));
388define('PTR', 'R',
389 qw(getpwent getpwnam getpwuid));
390define('PTR', 'R',
391 qw(getspent getspnam));
392
393define('FPTR', 'H',
f7937171 394 qw(getgrent getgrgid getgrnam setgrent endgrent));
10bc17b6 395define('FPTR', 'H',
f7937171 396 qw(getpwent getpwnam getpwuid setpwent endpwent));
10bc17b6 397
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398define('BUFFER', 'B',
399 qw(getpwent getpwgid getpwnam));
400
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401define('PTR', 'R',
402 qw(gethostent gethostbyaddr gethostbyname));
403define('PTR', 'R',
404 qw(getnetent getnetbyaddr getnetbyname));
405define('PTR', 'R',
406 qw(getprotoent getprotobyname getprotobynumber));
407define('PTR', 'R',
408 qw(getservent getservbyname getservbyport));
409
edd309b7
JH
410define('BUFFER', 'B',
411 qw(gethostent gethostbyaddr gethostbyname));
412define('BUFFER', 'B',
413 qw(getnetent getnetbyaddr getnetbyname));
414define('BUFFER', 'B',
415 qw(getprotoent getprotobyname getprotobynumber));
416define('BUFFER', 'B',
417 qw(getservent getservbyname getservbyport));
418
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419define('ERRNO', 'E',
420 qw(gethostent gethostbyaddr gethostbyname));
421define('ERRNO', 'E',
422 qw(getnetent getnetbyaddr getnetbyname));
423
aa418cf1
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424# The following loop accumulates the "ssif" (struct, size, init, free)
425# sections that declare the struct members (in reentr.h), and the buffer
426# size initialization, buffer initialization (malloc), and buffer
427# release (free) code (in reentr.c).
428#
429# The loop also contains a lot of intrinsic logic about groups of
430# functions (since functions of certain kind operate the same way).
431
432for my $func (@seenf) {
433 my $FUNC = uc $func;
434 my $ifdef = "#ifdef HAS_${FUNC}_R\n";
435 my $endif = "#endif /* HAS_${FUNC}_R */\n";
436 if (exists $seena{$func}) {
437 my @p = @{$seena{$func}};
438 if ($func =~ /^(asctime|ctime|getlogin|setlocale|strerror|ttyname)$/) {
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439 pushssif $ifdef;
440 push @struct, <<EOF;
aa418cf1
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441 char* _${func}_buffer;
442 size_t _${func}_size;
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443EOF
444 push @size, <<EOF;
aa418cf1 445 PL_reentrant_buffer->_${func}_size = REENTRANTSMALLSIZE;
10bc17b6 446EOF
aa418cf1 447 pushinitfree $func;
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448 pushssif $endif;
449 }
aa418cf1 450 elsif ($func =~ /^(crypt)$/) {
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451 pushssif $ifdef;
452 push @struct, <<EOF;
b430fd04 453#if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD
aa418cf1 454 $seend{$func} _${func}_data;
b430fd04 455#else
aa418cf1 456 $seent{$func} _${func}_struct;
b430fd04 457#endif
10bc17b6 458EOF
b430fd04 459 push @init, <<EOF;
5c728af0 460#if defined(__GLIBC__) || defined(__EMX__)
aa418cf1 461 PL_reentrant_buffer->_${func}_struct.initialized = 0;
1b6e0668
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462 /* work around glibc-2.2.5 bug */
463 PL_reentrant_buffer->_${func}_struct.current_saltbits = 0;
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464#endif
465EOF
b430fd04
JH
466 pushssif $endif;
467 }
aa418cf1 468 elsif ($func =~ /^(drand48|gmtime|localtime|random)$/) {
b430fd04
JH
469 pushssif $ifdef;
470 push @struct, <<EOF;
aa418cf1 471 $seent{$func} _${func}_struct;
b430fd04 472EOF
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473 if ($1 eq 'drand48') {
474 push @struct, <<EOF;
aa418cf1 475 double _${func}_double;
10bc17b6 476EOF
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477 } elsif ($1 eq 'random') {
478 push @struct, <<EOF;
479# if RANDOM_R_PROTO == REENTRANT_PROTO_iS
480 int _${func}_retval;
481# endif
482# if RANDOM_R_PROTO == REENTRANT_PROTO_lS
483 long _${func}_retval;
484# endif
485# if RANDOM_R_PROTO == REENTRANT_PROTO_tS
486 int32_t _${func}_retval;
487# endif
488EOF
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489 }
490 pushssif $endif;
491 }
aa418cf1 492 elsif ($func =~ /^(getgrnam|getpwnam|getspnam)$/) {
10bc17b6 493 pushssif $ifdef;
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494 # 'genfunc' can be read either as 'generic' or 'genre',
495 # it represents a group of functions.
496 my $genfunc = $func;
497 $genfunc =~ s/nam/ent/g;
498 $genfunc =~ s/^get//;
499 my $GENFUNC = uc $genfunc;
10bc17b6 500 push @struct, <<EOF;
aa418cf1
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501 $seent{$func} _${genfunc}_struct;
502 char* _${genfunc}_buffer;
503 size_t _${genfunc}_size;
10bc17b6
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504EOF
505 push @struct, <<EOF;
aa418cf1
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506# ifdef USE_${GENFUNC}_PTR
507 $seent{$func}* _${genfunc}_ptr;
10bc17b6
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508# endif
509EOF
0de8cad8 510 push @struct, <<EOF;
aa418cf1
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511# ifdef USE_${GENFUNC}_FPTR
512 FILE* _${genfunc}_fptr;
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513# endif
514EOF
0de8cad8 515 push @init, <<EOF;
aa418cf1
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516# ifdef USE_${GENFUNC}_FPTR
517 PL_reentrant_buffer->_${genfunc}_fptr = NULL;
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518# endif
519EOF
0de8cad8 520 my $sc = $genfunc eq 'grent' ?
10bc17b6 521 '_SC_GETGR_R_SIZE_MAX' : '_SC_GETPW_R_SIZE_MAX';
0de8cad8
RGS
522 my $sz = "_${genfunc}_size";
523 push @size, <<EOF;
10bc17b6 524# if defined(HAS_SYSCONF) && defined($sc) && !defined(__GLIBC__)
0de8cad8 525 PL_reentrant_buffer->$sz = sysconf($sc);
e3410746
SR
526 if (PL_reentrant_buffer->$sz == -1)
527 PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
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528# else
529# if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
0de8cad8 530 PL_reentrant_buffer->$sz = SIABUFSIZ;
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JH
531# else
532# ifdef __sgi
0de8cad8 533 PL_reentrant_buffer->$sz = BUFSIZ;
10bc17b6 534# else
0de8cad8 535 PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
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536# endif
537# endif
538# endif
539EOF
aa418cf1 540 pushinitfree $genfunc;
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541 pushssif $endif;
542 }
aa418cf1 543 elsif ($func =~ /^(gethostbyname|getnetbyname|getservbyname|getprotobyname)$/) {
10bc17b6 544 pushssif $ifdef;
aa418cf1
JH
545 my $genfunc = $func;
546 $genfunc =~ s/byname/ent/;
547 $genfunc =~ s/^get//;
548 my $GENFUNC = uc $genfunc;
549 my $D = ifprotomatch($FUNC, grep {/D/} @p);
550 my $d = $seend{$func};
31ee0cb7 551 $d =~ s/\*$//; # snip: we need need the base type.
10bc17b6 552 push @struct, <<EOF;
aa418cf1 553 $seent{$func} _${genfunc}_struct;
10bc17b6 554# if $D
aa418cf1 555 $d _${genfunc}_data;
10bc17b6 556# else
aa418cf1
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557 char* _${genfunc}_buffer;
558 size_t _${genfunc}_size;
10bc17b6 559# endif
aa418cf1
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560# ifdef USE_${GENFUNC}_PTR
561 $seent{$func}* _${genfunc}_ptr;
10bc17b6
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562# endif
563EOF
564 push @struct, <<EOF;
aa418cf1
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565# ifdef USE_${GENFUNC}_ERRNO
566 int _${genfunc}_errno;
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567# endif
568EOF
569 push @size, <<EOF;
570#if !($D)
aa418cf1 571 PL_reentrant_buffer->_${genfunc}_size = REENTRANTUSUALSIZE;
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572#endif
573EOF
574 push @init, <<EOF;
575#if !($D)
aa418cf1 576 New(31338, PL_reentrant_buffer->_${genfunc}_buffer, PL_reentrant_buffer->_${genfunc}_size, char);
10bc17b6
JH
577#endif
578EOF
579 push @free, <<EOF;
580#if !($D)
aa418cf1 581 Safefree(PL_reentrant_buffer->_${genfunc}_buffer);
10bc17b6
JH
582#endif
583EOF
584 pushssif $endif;
585 }
aa418cf1 586 elsif ($func =~ /^(readdir|readdir64)$/) {
10bc17b6 587 pushssif $ifdef;
aa418cf1 588 my $R = ifprotomatch($FUNC, grep {/R/} @p);
10bc17b6 589 push @struct, <<EOF;
aa418cf1
JH
590 $seent{$func}* _${func}_struct;
591 size_t _${func}_size;
10bc17b6 592# if $R
aa418cf1 593 $seent{$func}* _${func}_ptr;
10bc17b6
JH
594# endif
595EOF
596 push @size, <<EOF;
597 /* This is the size Solaris recommends.
598 * (though we go static, should use pathconf() instead) */
aa418cf1 599 PL_reentrant_buffer->_${func}_size = sizeof($seent{$func}) + MAXPATHLEN + 1;
10bc17b6
JH
600EOF
601 push @init, <<EOF;
aa418cf1 602 PL_reentrant_buffer->_${func}_struct = ($seent{$func}*)safemalloc(PL_reentrant_buffer->_${func}_size);
10bc17b6
JH
603EOF
604 push @free, <<EOF;
aa418cf1 605 Safefree(PL_reentrant_buffer->_${func}_struct);
10bc17b6
JH
606EOF
607 pushssif $endif;
608 }
609
610 push @wrap, $ifdef;
611
10bc17b6 612 push @wrap, <<EOF;
aa418cf1 613# undef $func
10bc17b6 614EOF
aa418cf1
JH
615
616 # Write out what we have learned.
617
10bc17b6 618 my @v = 'a'..'z';
aa418cf1 619 my $v = join(", ", @v[0..$seenu{$func}-1]);
10bc17b6
JH
620 for my $p (@p) {
621 my ($r, $a) = split '_', $p;
622 my $test = $r eq 'I' ? ' == 0' : '';
623 my $true = 1;
aa418cf1
JH
624 my $genfunc = $func;
625 if ($genfunc =~ /^(?:get|set|end)(pw|gr|host|net|proto|serv|sp)/) {
626 $genfunc = "${1}ent";
627 } elsif ($genfunc eq 'srand48') {
628 $genfunc = "drand48";
10bc17b6
JH
629 }
630 my $b = $a;
631 my $w = '';
aa418cf1 632 substr($b, 0, $seenu{$func}) = '';
a845a0d4
JH
633 if ($func =~ /^random$/) {
634 $true = "PL_reentrant_buffer->_random_retval";
635 } elsif ($b =~ /R/) {
aa418cf1
JH
636 $true = "PL_reentrant_buffer->_${genfunc}_ptr";
637 } elsif ($b =~ /T/ && $func eq 'drand48') {
638 $true = "PL_reentrant_buffer->_${genfunc}_double";
10bc17b6 639 } elsif ($b =~ /S/) {
aa418cf1
JH
640 if ($func =~ /^readdir/) {
641 $true = "PL_reentrant_buffer->_${genfunc}_struct";
10bc17b6 642 } else {
aa418cf1 643 $true = "&PL_reentrant_buffer->_${genfunc}_struct";
10bc17b6
JH
644 }
645 } elsif ($b =~ /B/) {
aa418cf1 646 $true = "PL_reentrant_buffer->_${genfunc}_buffer";
10bc17b6
JH
647 }
648 if (length $b) {
649 $w = join ", ",
650 map {
651 $_ eq 'R' ?
aa418cf1 652 "&PL_reentrant_buffer->_${genfunc}_ptr" :
10bc17b6 653 $_ eq 'E' ?
aa418cf1 654 "&PL_reentrant_buffer->_${genfunc}_errno" :
10bc17b6 655 $_ eq 'B' ?
aa418cf1 656 "PL_reentrant_buffer->_${genfunc}_buffer" :
10bc17b6 657 $_ =~ /^[WI]$/ ?
aa418cf1 658 "PL_reentrant_buffer->_${genfunc}_size" :
10bc17b6 659 $_ eq 'H' ?
aa418cf1 660 "&PL_reentrant_buffer->_${genfunc}_fptr" :
10bc17b6 661 $_ eq 'D' ?
aa418cf1 662 "&PL_reentrant_buffer->_${genfunc}_data" :
10bc17b6 663 $_ eq 'S' ?
aa418cf1
JH
664 ($func =~ /^readdir/ ?
665 "PL_reentrant_buffer->_${genfunc}_struct" :
666 "&PL_reentrant_buffer->_${genfunc}_struct" ) :
667 $_ eq 'T' && $func eq 'drand48' ?
668 "&PL_reentrant_buffer->_${genfunc}_double" :
a845a0d4
JH
669 $_ =~ /^[ilt]$/ && $func eq 'random' ?
670 "&PL_reentrant_buffer->_random_retval" :
10bc17b6
JH
671 $_
672 } split '', $b;
673 $w = ", $w" if length $v;
674 }
aa418cf1 675 my $call = "${func}_r($v$w)";
a845a0d4 676 $call = "((errno = $call))" if $r eq 'I' && $func ne 'random';
10bc17b6 677 push @wrap, <<EOF;
aa418cf1 678# if !defined($func) && ${FUNC}_R_PROTO == REENTRANT_PROTO_$p
10bc17b6
JH
679EOF
680 if ($r eq 'V' || $r eq 'B') {
681 push @wrap, <<EOF;
aa418cf1 682# define $func($v) $call
10bc17b6
JH
683EOF
684 } else {
aa418cf1 685 if ($func =~ /^get/) {
edd309b7
JH
686 my $rv = $v ? ", $v" : "";
687 push @wrap, <<EOF;
aa418cf1 688# define $func($v) ($call$test ? $true : (errno == ERANGE ? Perl_reentrant_retry("$func"$rv) : 0))
10bc17b6 689EOF
edd309b7
JH
690 } else {
691 push @wrap, <<EOF;
aa418cf1 692# define $func($v) ($call$test ? $true : 0)
edd309b7
JH
693EOF
694 }
10bc17b6
JH
695 }
696 push @wrap, <<EOF;
697# endif
698EOF
699 }
700
701 push @wrap, $endif, "\n";
702 }
703}
704
705local $" = '';
706
707print <<EOF;
708
709/* Defines for indicating which special features are supported. */
710
711@define
712typedef struct {
713@struct
aa418cf1 714 int dummy; /* cannot have empty structs */
10bc17b6
JH
715} REENTR;
716
717/* The wrappers. */
718
719@wrap
720#endif /* USE_REENTRANT_API */
721
722#endif
723
724EOF
725
726close(H);
727
aa418cf1
JH
728# Prepare to write the reentr.c.
729
10bc17b6
JH
730die "reentr.c: $!" unless open(C, ">reentr.c");
731select C;
732print <<EOF;
733/*
734 * reentr.c
735 *
4c79ee7a 736 * Copyright (c) 1997-2003, Larry Wall
10bc17b6
JH
737 *
738 * You may distribute under the terms of either the GNU General Public
739 * License or the Artistic License, as specified in the README file.
740 *
741 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
742 * This file is built by reentrl.pl from data in reentr.pl.
743 *
744 * "Saruman," I said, standing away from him, "only one hand at a time can
745 * wield the One, and you know that well, so do not trouble to say we!"
746 *
747 */
748
749#include "EXTERN.h"
750#define PERL_IN_REENTR_C
751#include "perl.h"
752#include "reentr.h"
753
754void
755Perl_reentrant_size(pTHX) {
756#ifdef USE_REENTRANT_API
8695fa85
SR
757#define REENTRANTSMALLSIZE 256 /* Make something up. */
758#define REENTRANTUSUALSIZE 4096 /* Make something up. */
10bc17b6
JH
759@size
760#endif /* USE_REENTRANT_API */
761}
762
763void
764Perl_reentrant_init(pTHX) {
765#ifdef USE_REENTRANT_API
766 New(31337, PL_reentrant_buffer, 1, REENTR);
767 Perl_reentrant_size(aTHX);
768@init
769#endif /* USE_REENTRANT_API */
770}
771
772void
773Perl_reentrant_free(pTHX) {
774#ifdef USE_REENTRANT_API
775@free
776 Safefree(PL_reentrant_buffer);
777#endif /* USE_REENTRANT_API */
778}
779
edd309b7
JH
780void*
781Perl_reentrant_retry(const char *f, ...)
782{
783 dTHX;
784 void *retptr = NULL;
785#ifdef USE_REENTRANT_API
f7937171 786# if defined(USE_HOSTENT_BUFFER) || defined(USE_GRENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PWENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SRVENT_BUFFER)
e3410746
SR
787 void *p0;
788# endif
f7937171 789# if defined(USE_SERVENT_BUFFER)
e3410746
SR
790 void *p1;
791# endif
f7937171 792# if defined(USE_HOSTENT_BUFFER)
edd309b7 793 size_t asize;
e3410746 794# endif
f7937171 795# if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
edd309b7 796 int anint;
e3410746 797# endif
edd309b7
JH
798 va_list ap;
799
800 va_start(ap, f);
801
edd309b7 802 switch (PL_op->op_type) {
f7937171 803#ifdef USE_HOSTENT_BUFFER
edd309b7
JH
804 case OP_GHBYADDR:
805 case OP_GHBYNAME:
806 case OP_GHOSTENT:
807 {
af685957
JH
808#ifdef PERL_REENTRANT_MAXSIZE
809 if (PL_reentrant_buffer->_hostent_size <=
810 PERL_REENTRANT_MAXSIZE / 2)
811#endif
812 {
f7937171
JH
813 PL_reentrant_buffer->_hostent_size *= 2;
814 Renew(PL_reentrant_buffer->_hostent_buffer,
815 PL_reentrant_buffer->_hostent_size, char);
edd309b7
JH
816 switch (PL_op->op_type) {
817 case OP_GHBYADDR:
818 p0 = va_arg(ap, void *);
819 asize = va_arg(ap, size_t);
820 anint = va_arg(ap, int);
821 retptr = gethostbyaddr(p0, asize, anint); break;
822 case OP_GHBYNAME:
823 p0 = va_arg(ap, void *);
824 retptr = gethostbyname(p0); break;
825 case OP_GHOSTENT:
826 retptr = gethostent(); break;
827 default:
0de8cad8 828 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
829 break;
830 }
831 }
832 }
833 break;
834#endif
f7937171 835#ifdef USE_GRENT_BUFFER
edd309b7
JH
836 case OP_GGRNAM:
837 case OP_GGRGID:
838 case OP_GGRENT:
839 {
af685957
JH
840#ifdef PERL_REENTRANT_MAXSIZE
841 if (PL_reentrant_buffer->_grent_size <=
842 PERL_REENTRANT_MAXSIZE / 2)
843#endif
844 {
edd309b7 845 Gid_t gid;
f7937171
JH
846 PL_reentrant_buffer->_grent_size *= 2;
847 Renew(PL_reentrant_buffer->_grent_buffer,
848 PL_reentrant_buffer->_grent_size, char);
edd309b7
JH
849 switch (PL_op->op_type) {
850 case OP_GGRNAM:
851 p0 = va_arg(ap, void *);
852 retptr = getgrnam(p0); break;
853 case OP_GGRGID:
ab2b559b
JH
854#if Gid_t_size < INTSIZE
855 gid = (Gid_t)va_arg(ap, int);
856#else
edd309b7 857 gid = va_arg(ap, Gid_t);
ab2b559b 858#endif
edd309b7
JH
859 retptr = getgrgid(gid); break;
860 case OP_GGRENT:
861 retptr = getgrent(); break;
862 default:
0de8cad8 863 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
864 break;
865 }
866 }
867 }
868 break;
869#endif
f7937171 870#ifdef USE_NETENT_BUFFER
edd309b7
JH
871 case OP_GNBYADDR:
872 case OP_GNBYNAME:
873 case OP_GNETENT:
874 {
af685957
JH
875#ifdef PERL_REENTRANT_MAXSIZE
876 if (PL_reentrant_buffer->_netent_size <=
877 PERL_REENTRANT_MAXSIZE / 2)
878#endif
879 {
edd309b7 880 Netdb_net_t net;
f7937171
JH
881 PL_reentrant_buffer->_netent_size *= 2;
882 Renew(PL_reentrant_buffer->_netent_buffer,
883 PL_reentrant_buffer->_netent_size, char);
edd309b7
JH
884 switch (PL_op->op_type) {
885 case OP_GNBYADDR:
886 net = va_arg(ap, Netdb_net_t);
887 anint = va_arg(ap, int);
888 retptr = getnetbyaddr(net, anint); break;
889 case OP_GNBYNAME:
890 p0 = va_arg(ap, void *);
891 retptr = getnetbyname(p0); break;
892 case OP_GNETENT:
893 retptr = getnetent(); break;
894 default:
0de8cad8 895 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
896 break;
897 }
898 }
899 }
900 break;
901#endif
f7937171 902#ifdef USE_PWENT_BUFFER
edd309b7
JH
903 case OP_GPWNAM:
904 case OP_GPWUID:
905 case OP_GPWENT:
906 {
af685957
JH
907#ifdef PERL_REENTRANT_MAXSIZE
908 if (PL_reentrant_buffer->_pwent_size <=
909 PERL_REENTRANT_MAXSIZE / 2)
910#endif
911 {
edd309b7 912 Uid_t uid;
f7937171
JH
913 PL_reentrant_buffer->_pwent_size *= 2;
914 Renew(PL_reentrant_buffer->_pwent_buffer,
915 PL_reentrant_buffer->_pwent_size, char);
edd309b7
JH
916 switch (PL_op->op_type) {
917 case OP_GPWNAM:
918 p0 = va_arg(ap, void *);
919 retptr = getpwnam(p0); break;
920 case OP_GPWUID:
ab2b559b
JH
921#if Uid_t_size < INTSIZE
922 uid = (Uid_t)va_arg(ap, int);
923#else
edd309b7 924 uid = va_arg(ap, Uid_t);
ab2b559b 925#endif
edd309b7
JH
926 retptr = getpwuid(uid); break;
927 case OP_GPWENT:
928 retptr = getpwent(); break;
929 default:
0de8cad8 930 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
931 break;
932 }
933 }
934 }
935 break;
936#endif
f7937171 937#ifdef USE_PROTOENT_BUFFER
edd309b7
JH
938 case OP_GPBYNAME:
939 case OP_GPBYNUMBER:
940 case OP_GPROTOENT:
941 {
af685957
JH
942#ifdef PERL_REENTRANT_MAXSIZE
943 if (PL_reentrant_buffer->_protoent_size <=
944 PERL_REENTRANT_MAXSIZE / 2)
945#endif
946 {
f7937171
JH
947 PL_reentrant_buffer->_protoent_size *= 2;
948 Renew(PL_reentrant_buffer->_protoent_buffer,
949 PL_reentrant_buffer->_protoent_size, char);
edd309b7
JH
950 switch (PL_op->op_type) {
951 case OP_GPBYNAME:
952 p0 = va_arg(ap, void *);
953 retptr = getprotobyname(p0); break;
954 case OP_GPBYNUMBER:
955 anint = va_arg(ap, int);
956 retptr = getprotobynumber(anint); break;
957 case OP_GPROTOENT:
958 retptr = getprotoent(); break;
959 default:
0de8cad8 960 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
961 break;
962 }
963 }
964 }
965 break;
966#endif
f7937171 967#ifdef USE_SERVENT_BUFFER
edd309b7
JH
968 case OP_GSBYNAME:
969 case OP_GSBYPORT:
970 case OP_GSERVENT:
971 {
af685957
JH
972#ifdef PERL_REENTRANT_MAXSIZE
973 if (PL_reentrant_buffer->_servent_size <=
974 PERL_REENTRANT_MAXSIZE / 2)
975#endif
976 {
f7937171
JH
977 PL_reentrant_buffer->_servent_size *= 2;
978 Renew(PL_reentrant_buffer->_servent_buffer,
979 PL_reentrant_buffer->_servent_size, char);
edd309b7
JH
980 switch (PL_op->op_type) {
981 case OP_GSBYNAME:
982 p0 = va_arg(ap, void *);
983 p1 = va_arg(ap, void *);
984 retptr = getservbyname(p0, p1); break;
985 case OP_GSBYPORT:
986 anint = va_arg(ap, int);
987 p0 = va_arg(ap, void *);
988 retptr = getservbyport(anint, p0); break;
989 case OP_GSERVENT:
990 retptr = getservent(); break;
991 default:
0de8cad8 992 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
993 break;
994 }
995 }
996 }
997 break;
998#endif
999 default:
1000 /* Not known how to retry, so just fail. */
1001 break;
1002 }
1003
1004 va_end(ap);
1005#endif
1006 return retptr;
1007}
1008
10bc17b6
JH
1009EOF
1010
1011__DATA__
1012asctime S |time |const struct tm|B_SB|B_SBI|I_SB|I_SBI
b430fd04 1013crypt CC |crypt |struct crypt_data|B_CCS|B_CCD|D=CRYPTD*
10bc17b6
JH
1014ctermid B |stdio | |B_B
1015ctime S |time |const time_t |B_SB|B_SBI|I_SB|I_SBI
1016drand48 |stdlib |struct drand48_data |I_ST|T=double*
1017endgrent |grp | |I_H|V_H
31ee0cb7
JH
1018endhostent |netdb | |I_D|V_D|D=struct hostent_data*
1019endnetent |netdb | |I_D|V_D|D=struct netent_data*
1020endprotoent |netdb | |I_D|V_D|D=struct protoent_data*
10bc17b6 1021endpwent |pwd | |I_H|V_H
31ee0cb7 1022endservent |netdb | |I_D|V_D|D=struct servent_data*
10bc17b6
JH
1023getgrent |grp |struct group |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
1024getgrgid T |grp |struct group |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=gid_t
1025getgrnam C |grp |struct group |I_CSBWR|I_CSBIR|S_CBI|I_CSBI|S_CSBI
a845a0d4 1026gethostbyaddr 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
10bc17b6
JH
1027gethostbyname C |netdb |struct hostent |I_CSBWRE|S_CSBIE|I_CSD|D=struct hostent_data*
1028gethostent |netdb |struct hostent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct hostent_data*
1029getlogin |unistd | |I_BW|I_BI|B_BW|B_BI
a845a0d4 1030getnetbyaddr 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
10bc17b6
JH
1031getnetbyname C |netdb |struct netent |I_CSBWRE|I_CSBI|S_CSBI|I_CSD|D=struct netent_data*
1032getnetent |netdb |struct netent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct netent_data*
1033getprotobyname C|netdb |struct protoent|I_CSBWR|S_CSBI|I_CSD|D=struct protoent_data*
1034getprotobynumber I |netdb |struct protoent|I_ISBWR|S_ISBI|I_ISD|D=struct protoent_data*
1035getprotoent |netdb |struct protoent|I_SBWR|I_SBI|S_SBI|I_SD|D=struct protoent_data*
1036getpwent |pwd |struct passwd |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
1037getpwnam C |pwd |struct passwd |I_CSBWR|I_CSBIR|S_CSBI|I_CSBI
1038getpwuid T |pwd |struct passwd |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=uid_t
1039getservbyname CC|netdb |struct servent |I_CCSBWR|S_CCSBI|I_CCSD|D=struct servent_data*
1040getservbyport IC|netdb |struct servent |I_ICSBWR|S_ICSBI|I_ICSD|D=struct servent_data*
1041getservent |netdb |struct servent |I_SBWR|I_SBI|S_SBI|I_SD|D=struct servent_data*
1042getspnam C |shadow |struct spwd |I_CSBWR|S_CSBI
1043gmtime T |time |struct tm |S_TS|I_TS|T=const time_t*
1044localtime T |time |struct tm |S_TS|I_TS|T=const time_t*
a845a0d4 1045random |stdlib |struct random_data|I_iS|I_lS|I_St|i=int*|l=long*|t=int32_t*
10bc17b6
JH
1046readdir T |dirent |struct dirent |I_TSR|I_TS|T=DIR*
1047readdir64 T |dirent |struct dirent64|I_TSR|I_TS|T=DIR*
1048setgrent |grp | |I_H|V_H
1049sethostent I |netdb | |I_ID|V_ID|D=struct hostent_data*
1050setlocale IC |locale | |I_ICBI
1051setnetent I |netdb | |I_ID|V_ID|D=struct netent_data*
1052setprotoent I |netdb | |I_ID|V_ID|D=struct protoent_data*
1053setpwent |pwd | |I_H|V_H
1054setservent I |netdb | |I_ID|V_ID|D=struct servent_data*
1055srand48 L |stdlib |struct drand48_data |I_LS
1056srandom T |stdlib |struct random_data|I_TS|T=unsigned int
1057strerror I |string | |I_IBW|I_IBI|B_IBW
1058tmpnam B |stdio | |B_B
1059ttyname I |unistd | |I_IBW|I_IBI|B_IBI