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Integrate Memoize 0.64. Few tweaks were required in
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
0cb96387
GS		 28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS		 43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS		 50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS		 67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS		 73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS		 85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS		 87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS		 94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS		 99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS		 102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS		 104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS		 106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS		 112#endif
113
32e30700
GS		 114 return my_perl;
115}
116#else
954c1994
GS		 117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS		 140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1
MB		 151#ifdef USE_THREADS
152 int i;
153#ifndef FAKE_THREADS
e1f15930 154 struct perl_thread *thr = NULL;
a863c7d1
MB		 155#endif /* FAKE_THREADS */
156#endif /* USE_THREADS */
ba869deb 157
8990e307 158#ifdef MULTIPLICITY
54aff467 159 init_interp();
ac27b0f5 160 PL_perl_destruct_level = 1;
54aff467
GS		 161#else
162 if (PL_perl_destruct_level > 0)
163 init_interp();
164#endif
165
33f46ff6 166 /* Init the real globals (and main thread)? */
3280af22 167 if (!PL_linestr) {
1feb2720 168#ifdef USE_THREADS
533c011a 169 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 170 /*
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
173 */
533c011a
NIS		 174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
ba869deb 178# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 179 MUTEX_INIT(&PL_svref_mutex);
ba869deb 180# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 181
5ff3f7a4 182 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 185
199100c8 186 thr = init_main_thread();
11343788
MB		 187#endif /* USE_THREADS */
188
14dd3ad8 189#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 191#endif
312caa8e 192
2aea9f8a
GS		 193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194
3280af22
NIS		 195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 197
3280af22 198 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 199 /* set read-only and try to insure than we wont see REFCNT==0
200 very often */
201
3280af22
NIS		 202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 204
3280af22
NIS		 205 sv_setpv(&PL_sv_no,PL_No);
206 SvNV(&PL_sv_no);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 209
3280af22
NIS		 210 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvNV(&PL_sv_yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 214 }
79072805 215
76e3520e
GS		 216#ifdef PERL_OBJECT
217 /* TODO: */
6b88bc9c 218 /* PL_sighandlerp = sighandler; */
76e3520e 219#else
cea2e8a9 220 PL_sighandlerp = Perl_sighandler;
76e3520e 221#endif
3280af22 222 PL_pidstatus = newHV();
44a8e56a 223
79072805
LW		 224#ifdef MSDOS
225 /*
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
228 * filehandles.
229 */
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
232#endif
233 }
234
79cb57f6 235 PL_nrs = newSVpvn("\n", 1);
3280af22 236 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 237
cea2e8a9 238 init_stacks();
79072805 239
748a9306 240 init_ids();
3280af22 241 PL_lex_state = LEX_NOTPARSING;
a5f75d66 242
312caa8e 243 JMPENV_BOOTSTRAP;
f86702cc 244 STATUS_ALL_SUCCESS;
245
0672f40e 246 init_i18nl10n(1);
36477c24 247 SET_NUMERIC_STANDARD();
0b5b802d 248
a7cb1f99
GS		 249 {
250 U8 *s;
251 PL_patchlevel = NEWSV(0,4);
155aba94 252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 255 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 256 /* Build version strings using "native" characters */
257 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
258 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
259 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 260 *s = '\0';
261 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
262 SvPOK_on(PL_patchlevel);
263 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
264 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 265#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 266 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 267#endif
a7cb1f99
GS		 268 ;
269 SvNOK_on(PL_patchlevel); /* dual valued */
270 SvUTF8_on(PL_patchlevel);
271 SvREADONLY_on(PL_patchlevel);
272 }
79072805 273
ab821d7f 274#if defined(LOCAL_PATCH_COUNT)
3280af22 275 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 276#endif
277
52853b95
GS		 278#ifdef HAVE_INTERP_INTERN
279 sys_intern_init();
280#endif
281
4b556e6c 282 PerlIO_init(); /* Hook to IO system */
760ac839 283
3280af22
NIS		 284 PL_fdpid = newAV(); /* for remembering popen pids by fd */
285 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 286 PL_errors = newSVpvn("",0);
8990e307 287
8990e307 288 ENTER;
79072805
LW		 289}
290
954c1994
GS		 291/*
292=for apidoc perl_destruct
293
294Shuts down a Perl interpreter. See L<perlembed>.
295
296=cut
297*/
298
79072805 299void
0cb96387 300perl_destruct(pTHXx)
79072805 301{
748a9306 302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 303 HV *hv;
1f2bfc8a 304#ifdef USE_THREADS
33f46ff6 305 Thread t;
cea2e8a9 306 dTHX;
1f2bfc8a 307#endif /* USE_THREADS */
8990e307 308
7766f137
GS		 309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
311
11343788 312#ifdef USE_THREADS
0f15f207 313#ifndef FAKE_THREADS
8023c3ce
MB		 314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 retry_cleanup:
533c011a 316 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 317 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 318 "perl_destruct: waiting for %d threads...\n",
533c011a 319 PL_nthreads - 1));
33f46ff6 320 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
323 AV *av;
c7848ba1 324 case THRf_ZOMBIE:
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
533c011a 329 PL_nthreads--;
8023c3ce
MB		 330 /*
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
334 * all over again.
335 */
533c011a 336 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 337 JOIN(t, &av);
605e5515 338 SvREFCNT_dec((SV*)av);
bf49b057 339 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 340 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 341 goto retry_cleanup;
c7848ba1 342 case THRf_R_JOINABLE:
bf49b057 343 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 346 /*
c7848ba1
MB		 347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
351 */
533c011a 352 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 353 DETACH(t);
354 MUTEX_UNLOCK(&t->mutex);
8023c3ce 355 goto retry_cleanup;
c7848ba1 356 default:
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 358 "perl_destruct: ignoring %p (state %u)\n",
359 t, ThrSTATE(t)));
360 MUTEX_UNLOCK(&t->mutex);
c7848ba1 361 /* fall through and out */
33f46ff6
MB		 362 }
363 }
8023c3ce
MB		 364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 367 while (PL_nthreads > 1)
11343788 368 {
bf49b057 369 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 370 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 371 PL_nthreads - 1));
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 373 }
374 /* At this point, we're the last thread */
533c011a 375 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
b57a092c 379 PL_nthreads--;
0f15f207 380#endif /* !defined(FAKE_THREADS) */
11343788
MB		 381#endif /* USE_THREADS */
382
3280af22 383 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 384#ifdef DEBUGGING
385 {
386 char *s;
155aba94 387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 388 int i = atoi(s);
389 if (destruct_level < i)
390 destruct_level = i;
391 }
4633a7c4
LW		 392 }
393#endif
394
8990e307 395 LEAVE;
a0d0e21e
LW		 396 FREETMPS;
397
13621cfb 398
ff0cee69 399 /* We must account for everything. */
400
401 /* Destroy the main CV and syntax tree */
3280af22
NIS		 402 if (PL_main_root) {
403 PL_curpad = AvARRAY(PL_comppad);
404 op_free(PL_main_root);
405 PL_main_root = Nullop;
a0d0e21e 406 }
3280af22
NIS		 407 PL_curcop = &PL_compiling;
408 PL_main_start = Nullop;
409 SvREFCNT_dec(PL_main_cv);
410 PL_main_cv = Nullcv;
24d3c518 411 PL_dirty = TRUE;
ff0cee69 412
13621cfb
NIS		 413 /* Tell PerlIO we are about to tear things apart in case
414 we have layers which are using resources that should
415 be cleaned up now.
416 */
417
418 PerlIO_destruct(aTHX);
419
3280af22 420 if (PL_sv_objcount) {
a0d0e21e
LW		 421 /*
422 * Try to destruct global references. We do this first so that the
423 * destructors and destructees still exist. Some sv's might remain.
424 * Non-referenced objects are on their own.
425 */
a0d0e21e 426 sv_clean_objs();
8990e307
LW		 427 }
428
5cd24f17 429 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 430 SvREFCNT_dec(PL_warnhook);
431 PL_warnhook = Nullsv;
432 SvREFCNT_dec(PL_diehook);
433 PL_diehook = Nullsv;
5cd24f17 434
4b556e6c 435 /* call exit list functions */
3280af22 436 while (PL_exitlistlen-- > 0)
0cb96387 437 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 438
3280af22 439 Safefree(PL_exitlist);
4b556e6c 440
a0d0e21e 441 if (destruct_level == 0){
8990e307 442
a0d0e21e 443 DEBUG_P(debprofdump());
ac27b0f5 444
a0d0e21e
LW		 445 /* The exit() function will do everything that needs doing. */
446 return;
447 }
5dd60ef7 448
551a8b83
JH		 449 /* jettison our possibly duplicated environment */
450
451#ifdef USE_ENVIRON_ARRAY
452 if (environ != PL_origenviron) {
453 I32 i;
454
455 for (i = 0; environ[i]; i++)
4b420006
JH		 456 safesysfree(environ[i]);
457 /* Must use safesysfree() when working with environ. */
458 safesysfree(environ);
551a8b83
JH		 459
460 environ = PL_origenviron;
461 }
462#endif
463
5f05dabc 464 /* loosen bonds of global variables */
465
3280af22
NIS		 466 if(PL_rsfp) {
467 (void)PerlIO_close(PL_rsfp);
468 PL_rsfp = Nullfp;
8ebc5c01 469 }
470
471 /* Filters for program text */
3280af22
NIS		 472 SvREFCNT_dec(PL_rsfp_filters);
473 PL_rsfp_filters = Nullav;
8ebc5c01 474
475 /* switches */
3280af22
NIS		 476 PL_preprocess = FALSE;
477 PL_minus_n = FALSE;
478 PL_minus_p = FALSE;
479 PL_minus_l = FALSE;
480 PL_minus_a = FALSE;
481 PL_minus_F = FALSE;
482 PL_doswitches = FALSE;
599cee73 483 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 484 PL_doextract = FALSE;
485 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 486 PL_unsafe = FALSE;
487
488 Safefree(PL_inplace);
489 PL_inplace = Nullch;
a7cb1f99 490 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 491
492 if (PL_e_script) {
493 SvREFCNT_dec(PL_e_script);
494 PL_e_script = Nullsv;
8ebc5c01 495 }
496
497 /* magical thingies */
498
7889fe52
NIS		 499 SvREFCNT_dec(PL_ofs_sv); /* $, */
500 PL_ofs_sv = Nullsv;
5f05dabc 501
7889fe52
NIS		 502 SvREFCNT_dec(PL_ors_sv); /* $\ */
503 PL_ors_sv = Nullsv;
8ebc5c01 504
3280af22
NIS		 505 SvREFCNT_dec(PL_rs); /* $/ */
506 PL_rs = Nullsv;
dc92893f 507
3280af22
NIS		 508 SvREFCNT_dec(PL_nrs); /* $/ helper */
509 PL_nrs = Nullsv;
5f05dabc 510
d33b2eba
GS		 511 PL_multiline = 0; /* $* */
512 Safefree(PL_osname); /* $^O */
513 PL_osname = Nullch;
5f05dabc 514
3280af22
NIS		 515 SvREFCNT_dec(PL_statname);
516 PL_statname = Nullsv;
517 PL_statgv = Nullgv;
5f05dabc 518
8ebc5c01 519 /* defgv, aka *_ should be taken care of elsewhere */
520
8ebc5c01 521 /* clean up after study() */
3280af22
NIS		 522 SvREFCNT_dec(PL_lastscream);
523 PL_lastscream = Nullsv;
524 Safefree(PL_screamfirst);
525 PL_screamfirst = 0;
526 Safefree(PL_screamnext);
527 PL_screamnext = 0;
8ebc5c01 528
7d5ea4e7
GS		 529 /* float buffer */
530 Safefree(PL_efloatbuf);
531 PL_efloatbuf = Nullch;
532 PL_efloatsize = 0;
533
8ebc5c01 534 /* startup and shutdown function lists */
3280af22
NIS		 535 SvREFCNT_dec(PL_beginav);
536 SvREFCNT_dec(PL_endav);
7d30b5c4 537 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 538 SvREFCNT_dec(PL_initav);
539 PL_beginav = Nullav;
540 PL_endav = Nullav;
7d30b5c4 541 PL_checkav = Nullav;
3280af22 542 PL_initav = Nullav;
5618dfe8 543
8ebc5c01 544 /* shortcuts just get cleared */
3280af22 545 PL_envgv = Nullgv;
3280af22
NIS		 546 PL_incgv = Nullgv;
547 PL_hintgv = Nullgv;
548 PL_errgv = Nullgv;
549 PL_argvgv = Nullgv;
550 PL_argvoutgv = Nullgv;
551 PL_stdingv = Nullgv;
bf49b057 552 PL_stderrgv = Nullgv;
3280af22
NIS		 553 PL_last_in_gv = Nullgv;
554 PL_replgv = Nullgv;
5c831c24 555 PL_debstash = Nullhv;
8ebc5c01 556
557 /* reset so print() ends up where we expect */
558 setdefout(Nullgv);
5c831c24 559
7a1c5554
GS		 560 SvREFCNT_dec(PL_argvout_stack);
561 PL_argvout_stack = Nullav;
8ebc5c01 562
5c831c24
GS		 563 SvREFCNT_dec(PL_modglobal);
564 PL_modglobal = Nullhv;
565 SvREFCNT_dec(PL_preambleav);
566 PL_preambleav = Nullav;
567 SvREFCNT_dec(PL_subname);
568 PL_subname = Nullsv;
569 SvREFCNT_dec(PL_linestr);
570 PL_linestr = Nullsv;
571 SvREFCNT_dec(PL_pidstatus);
572 PL_pidstatus = Nullhv;
573 SvREFCNT_dec(PL_toptarget);
574 PL_toptarget = Nullsv;
575 SvREFCNT_dec(PL_bodytarget);
576 PL_bodytarget = Nullsv;
577 PL_formtarget = Nullsv;
578
d33b2eba 579 /* free locale stuff */
b9582b6a 580#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 581 Safefree(PL_collation_name);
582 PL_collation_name = Nullch;
b9582b6a 583#endif
d33b2eba 584
b9582b6a 585#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 586 Safefree(PL_numeric_name);
587 PL_numeric_name = Nullch;
a453c169 588 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 589#endif
d33b2eba 590
5c831c24
GS		 591 /* clear utf8 character classes */
592 SvREFCNT_dec(PL_utf8_alnum);
593 SvREFCNT_dec(PL_utf8_alnumc);
594 SvREFCNT_dec(PL_utf8_ascii);
595 SvREFCNT_dec(PL_utf8_alpha);
596 SvREFCNT_dec(PL_utf8_space);
597 SvREFCNT_dec(PL_utf8_cntrl);
598 SvREFCNT_dec(PL_utf8_graph);
599 SvREFCNT_dec(PL_utf8_digit);
600 SvREFCNT_dec(PL_utf8_upper);
601 SvREFCNT_dec(PL_utf8_lower);
602 SvREFCNT_dec(PL_utf8_print);
603 SvREFCNT_dec(PL_utf8_punct);
604 SvREFCNT_dec(PL_utf8_xdigit);
605 SvREFCNT_dec(PL_utf8_mark);
606 SvREFCNT_dec(PL_utf8_toupper);
607 SvREFCNT_dec(PL_utf8_tolower);
608 PL_utf8_alnum = Nullsv;
609 PL_utf8_alnumc = Nullsv;
610 PL_utf8_ascii = Nullsv;
611 PL_utf8_alpha = Nullsv;
612 PL_utf8_space = Nullsv;
613 PL_utf8_cntrl = Nullsv;
614 PL_utf8_graph = Nullsv;
615 PL_utf8_digit = Nullsv;
616 PL_utf8_upper = Nullsv;
617 PL_utf8_lower = Nullsv;
618 PL_utf8_print = Nullsv;
619 PL_utf8_punct = Nullsv;
620 PL_utf8_xdigit = Nullsv;
621 PL_utf8_mark = Nullsv;
622 PL_utf8_toupper = Nullsv;
623 PL_utf8_totitle = Nullsv;
624 PL_utf8_tolower = Nullsv;
625
971a9dd3
GS		 626 if (!specialWARN(PL_compiling.cop_warnings))
627 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 628 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 629 if (!specialCopIO(PL_compiling.cop_io))
630 SvREFCNT_dec(PL_compiling.cop_io);
631 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 632#ifdef USE_ITHREADS
633 Safefree(CopFILE(&PL_compiling));
634 CopFILE(&PL_compiling) = Nullch;
635 Safefree(CopSTASHPV(&PL_compiling));
636#else
01724ea0 637 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 638 CopFILEGV(&PL_compiling) = Nullgv;
639 /* cop_stash is not refcounted */
01724ea0 640#endif
5c831c24 641
a0d0e21e 642 /* Prepare to destruct main symbol table. */
5f05dabc 643
3280af22
NIS		 644 hv = PL_defstash;
645 PL_defstash = 0;
a0d0e21e 646 SvREFCNT_dec(hv);
5c831c24
GS		 647 SvREFCNT_dec(PL_curstname);
648 PL_curstname = Nullsv;
a0d0e21e 649
5a844595
GS		 650 /* clear queued errors */
651 SvREFCNT_dec(PL_errors);
652 PL_errors = Nullsv;
653
a0d0e21e 654 FREETMPS;
0453d815 655 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 656 if (PL_scopestack_ix != 0)
0453d815
PM		 657 Perl_warner(aTHX_ WARN_INTERNAL,
658 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 659 (long)PL_scopestack_ix);
660 if (PL_savestack_ix != 0)
0453d815
PM		 661 Perl_warner(aTHX_ WARN_INTERNAL,
662 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 663 (long)PL_savestack_ix);
664 if (PL_tmps_floor != -1)
0453d815 665 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 666 (long)PL_tmps_floor + 1);
a0d0e21e 667 if (cxstack_ix != -1)
0453d815 668 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 669 (long)cxstack_ix + 1);
a0d0e21e 670 }
8990e307
LW		 671
672 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 673 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 674 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 675
676 /* the 2 is for PL_fdpid and PL_strtab */
677 while (PL_sv_count > 2 && sv_clean_all())
678 ;
679
d33b2eba
GS		 680 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
681 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 682 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
683 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 684
d4777f27
GS		 685 AvREAL_off(PL_fdpid); /* no surviving entries */
686 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 687 PL_fdpid = Nullav;
688
6c644e78
GS		 689#ifdef HAVE_INTERP_INTERN
690 sys_intern_clear();
691#endif
692
6e72f9df 693 /* Destruct the global string table. */
694 {
695 /* Yell and reset the HeVAL() slots that are still holding refcounts,
696 * so that sv_free() won't fail on them.
697 */
698 I32 riter;
699 I32 max;
700 HE *hent;
701 HE **array;
702
703 riter = 0;
3280af22
NIS		 704 max = HvMAX(PL_strtab);
705 array = HvARRAY(PL_strtab);
6e72f9df 706 hent = array[0];
707 for (;;) {
0453d815
PM		 708 if (hent && ckWARN_d(WARN_INTERNAL)) {
709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 711 HeVAL(hent) - Nullsv, HeKEY(hent));
712 HeVAL(hent) = Nullsv;
713 hent = HeNEXT(hent);
714 }
715 if (!hent) {
716 if (++riter > max)
717 break;
718 hent = array[riter];
719 }
720 }
721 }
3280af22 722 SvREFCNT_dec(PL_strtab);
6e72f9df 723
e652bb2f 724#ifdef USE_ITHREADS
a0739874
DM		 725 /* free the pointer table used for cloning */
726 ptr_table_free(PL_ptr_table);
53186e96 727#endif
a0739874 728
d33b2eba
GS		 729 /* free special SVs */
730
731 SvREFCNT(&PL_sv_yes) = 0;
732 sv_clear(&PL_sv_yes);
733 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 734 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 735
736 SvREFCNT(&PL_sv_no) = 0;
737 sv_clear(&PL_sv_no);
738 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 739 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 740
741 SvREFCNT(&PL_sv_undef) = 0;
742 SvREADONLY_off(&PL_sv_undef);
d33b2eba 743
0453d815
PM		 744 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
745 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 746
3280af22 747 Safefree(PL_origfilename);
3280af22 748 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 749 if (PL_reg_curpm)
750 Safefree(PL_reg_curpm);
82ba1be6 751 Safefree(PL_reg_poscache);
3280af22
NIS		 752 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
753 Safefree(PL_op_mask);
cf36064f
GS		 754 Safefree(PL_psig_ptr);
755 Safefree(PL_psig_name);
2c2666fc 756 Safefree(PL_bitcount);
ce08f86c 757 Safefree(PL_psig_pend);
6e72f9df 758 nuke_stacks();
3280af22 759 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 760
a0d0e21e 761 DEBUG_P(debprofdump());
11343788 762#ifdef USE_THREADS
5f08fbcd 763 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 764 MUTEX_DESTROY(&PL_sv_mutex);
765 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 766 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 767 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 768 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 769#ifdef EMULATE_ATOMIC_REFCOUNTS
770 MUTEX_DESTROY(&PL_svref_mutex);
771#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 772
8023c3ce 773 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 774 Safefree(SvPVX(PL_thrsv));
775 Safefree(SvANY(PL_thrsv));
776 Safefree(PL_thrsv);
777 PL_thrsv = Nullsv;
8023c3ce 778#endif /* USE_THREADS */
d33b2eba 779
612f20c3
GS		 780 sv_free_arenas();
781
fc36a67e 782 /* As the absolutely last thing, free the non-arena SV for mess() */
783
3280af22 784 if (PL_mess_sv) {
9c63abab
GS		 785 /* it could have accumulated taint magic */
786 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
787 MAGIC* mg;
788 MAGIC* moremagic;
789 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
790 moremagic = mg->mg_moremagic;
14befaf4
DM		 791 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
792 && mg->mg_len >= 0)
9c63abab
GS		 793 Safefree(mg->mg_ptr);
794 Safefree(mg);
795 }
796 }
fc36a67e 797 /* we know that type >= SVt_PV */
155aba94 798 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 799 Safefree(SvPVX(PL_mess_sv));
800 Safefree(SvANY(PL_mess_sv));
801 Safefree(PL_mess_sv);
802 PL_mess_sv = Nullsv;
fc36a67e 803 }
79072805
LW		 804}
805
954c1994
GS		 806/*
807=for apidoc perl_free
808
809Releases a Perl interpreter. See L<perlembed>.
810
811=cut
812*/
813
79072805 814void
0cb96387 815perl_free(pTHXx)
79072805 816{
c5be433b 817#if defined(PERL_OBJECT)
7f0d82f7 818 PerlMem_free(this);
76e3520e 819#else
2986a63f 820# if defined(WIN32) || defined(NETWARE)
ce3e5b80 821# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH		 822 #ifdef NETWARE
823 void *host = nw_internal_host;
824 #else
825 void *host = w32_internal_host;
826 #endif
827 #ifndef NETWARE
828 if (PerlProc_lasthost()) {
ce08f86c 829 PerlIO_cleanup();
2986a63f
JH		 830 }
831 #endif
7f0d82f7 832 PerlMem_free(aTHXx);
2986a63f
JH		 833 #ifdef NETWARE
834 nw5_delete_internal_host(host);
835 #else
836 win32_delete_internal_host(host);
837 #endif
ce3e5b80 838#else
ce08f86c 839 PerlIO_cleanup();
ce3e5b80
NIS		 840 PerlMem_free(aTHXx);
841#endif
1c0ca838
GS		 842# else
843 PerlMem_free(aTHXx);
844# endif
76e3520e 845#endif
79072805
LW		 846}
847
4b556e6c 848void
864dbfa3 849Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 850{
3280af22
NIS		 851 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
852 PL_exitlist[PL_exitlistlen].fn = fn;
853 PL_exitlist[PL_exitlistlen].ptr = ptr;
854 ++PL_exitlistlen;
4b556e6c
JD		 855}
856
954c1994
GS		 857/*
858=for apidoc perl_parse
859
860Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
861
862=cut
863*/
864
79072805 865int
0cb96387 866perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 867{
6224f72b 868 I32 oldscope;
6224f72b 869 int ret;
db36c5a1 870 dJMPENV;
cea2e8a9
GS		 871#ifdef USE_THREADS
872 dTHX;
873#endif
8d063cd8 874
a687059c
LW		 875#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
876#ifdef IAMSUID
877#undef IAMSUID
cea2e8a9 878 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 879setuid perl scripts securely.\n");
880#endif
881#endif
882
8f1f23e8 883#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 884 _dyld_lookup_and_bind
885 ("__environ", (unsigned long *) &environ_pointer, NULL);
886#endif /* environ */
887
3280af22
NIS		 888 PL_origargv = argv;
889 PL_origargc = argc;
fa6a1c44 890#ifdef USE_ENVIRON_ARRAY
3280af22 891 PL_origenviron = environ;
a0d0e21e
LW		 892#endif
893
3280af22 894 if (PL_do_undump) {
a0d0e21e
LW		 895
896 /* Come here if running an undumped a.out. */
897
3280af22
NIS		 898 PL_origfilename = savepv(argv[0]);
899 PL_do_undump = FALSE;
a0d0e21e 900 cxstack_ix = -1; /* start label stack again */
748a9306 901 init_ids();
a0d0e21e
LW		 902 init_postdump_symbols(argc,argv,env);
903 return 0;
904 }
905
3280af22
NIS		 906 if (PL_main_root) {
907 PL_curpad = AvARRAY(PL_comppad);
908 op_free(PL_main_root);
909 PL_main_root = Nullop;
ff0cee69 910 }
3280af22
NIS		 911 PL_main_start = Nullop;
912 SvREFCNT_dec(PL_main_cv);
913 PL_main_cv = Nullcv;
79072805 914
3280af22
NIS		 915 time(&PL_basetime);
916 oldscope = PL_scopestack_ix;
599cee73 917 PL_dowarn = G_WARN_OFF;
f86702cc 918
14dd3ad8
GS		 919#ifdef PERL_FLEXIBLE_EXCEPTIONS
920 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
921#else
922 JMPENV_PUSH(ret);
923#endif
6224f72b 924 switch (ret) {
312caa8e 925 case 0:
14dd3ad8
GS		 926#ifndef PERL_FLEXIBLE_EXCEPTIONS
927 parse_body(env,xsinit);
928#endif
7d30b5c4
GS		 929 if (PL_checkav)
930 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 931 ret = 0;
932 break;
6224f72b
GS		 933 case 1:
934 STATUS_ALL_FAILURE;
935 /* FALL THROUGH */
936 case 2:
937 /* my_exit() was called */
3280af22 938 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 939 LEAVE;
940 FREETMPS;
3280af22 941 PL_curstash = PL_defstash;
7d30b5c4
GS		 942 if (PL_checkav)
943 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 944 ret = STATUS_NATIVE_EXPORT;
945 break;
6224f72b 946 case 3:
bf49b057 947 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 948 ret = 1;
949 break;
6224f72b 950 }
14dd3ad8
GS		 951 JMPENV_POP;
952 return ret;
953}
954
955#ifdef PERL_FLEXIBLE_EXCEPTIONS
956STATIC void *
957S_vparse_body(pTHX_ va_list args)
958{
959 char **env = va_arg(args, char**);
960 XSINIT_t xsinit = va_arg(args, XSINIT_t);
961
962 return parse_body(env, xsinit);
312caa8e 963}
14dd3ad8 964#endif
312caa8e
CS		 965
966STATIC void *
14dd3ad8 967S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 968{
312caa8e
CS		 969 int argc = PL_origargc;
970 char **argv = PL_origargv;
312caa8e
CS		 971 char *scriptname = NULL;
972 int fdscript = -1;
973 VOL bool dosearch = FALSE;
974 char *validarg = "";
975 AV* comppadlist;
976 register SV *sv;
977 register char *s;
659ca9ea 978 char *popts, *cddir = Nullch;
312caa8e 979
3280af22 980 sv_setpvn(PL_linestr,"",0);
79cb57f6 981 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 982 SAVEFREESV(sv);
983 init_main_stash();
54310121 984
6224f72b
GS		 985 for (argc--,argv++; argc > 0; argc--,argv++) {
986 if (argv[0][0] != '-' || !argv[0][1])
987 break;
988#ifdef DOSUID
989 if (*validarg)
990 validarg = " PHOOEY ";
991 else
992 validarg = argv[0];
13281fa4 993#endif
6224f72b
GS		 994 s = argv[0]+1;
995 reswitch:
996 switch (*s) {
729a02f2
GS		 997 case 'C':
998#ifdef WIN32
c0932edc 999 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1000 /* FALL THROUGH */
1001#endif
1d5472a9
GS		 1002#ifndef PERL_STRICT_CR
1003 case '\r':
1004#endif
6224f72b
GS		 1005 case ' ':
1006 case '0':
1007 case 'F':
1008 case 'a':
1009 case 'c':
1010 case 'd':
1011 case 'D':
1012 case 'h':
1013 case 'i':
1014 case 'l':
1015 case 'M':
1016 case 'm':
1017 case 'n':
1018 case 'p':
1019 case 's':
1020 case 'u':
1021 case 'U':
1022 case 'v':
599cee73
PM		 1023 case 'W':
1024 case 'X':
6224f72b 1025 case 'w':
155aba94 1026 if ((s = moreswitches(s)))
6224f72b
GS		 1027 goto reswitch;
1028 break;
33b78306 1029
6224f72b 1030 case 'T':
3280af22 1031 PL_tainting = TRUE;
6224f72b
GS		 1032 s++;
1033 goto reswitch;
f86702cc 1034
6224f72b 1035 case 'e':
bf4acbe4
GS		 1036#ifdef MACOS_TRADITIONAL
1037 /* ignore -e for Dev:Pseudo argument */
1038 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1039 break;
bf4acbe4 1040#endif
3280af22 1041 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1042 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1043 if (!PL_e_script) {
79cb57f6 1044 PL_e_script = newSVpvn("",0);
0cb96387 1045 filter_add(read_e_script, NULL);
6224f72b
GS		 1046 }
1047 if (*++s)
3280af22 1048 sv_catpv(PL_e_script, s);
6224f72b 1049 else if (argv[1]) {
3280af22 1050 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1051 argc--,argv++;
1052 }
1053 else
cea2e8a9 1054 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1055 sv_catpv(PL_e_script, "\n");
6224f72b 1056 break;
afe37c7d 1057
6224f72b
GS		 1058 case 'I': /* -I handled both here and in moreswitches() */
1059 forbid_setid("-I");
1060 if (!*++s && (s=argv[1]) != Nullch) {
1061 argc--,argv++;
1062 }
6224f72b 1063 if (s && *s) {
0df16ed7
GS		 1064 char *p;
1065 STRLEN len = strlen(s);
1066 p = savepvn(s, len);
9c8a64f0 1067 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1068 sv_catpvn(sv, "-I", 2);
1069 sv_catpvn(sv, p, len);
1070 sv_catpvn(sv, " ", 1);
6224f72b 1071 Safefree(p);
0df16ed7
GS		 1072 }
1073 else
a67e862a 1074 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1075 break;
1076 case 'P':
1077 forbid_setid("-P");
3280af22 1078 PL_preprocess = TRUE;
6224f72b
GS		 1079 s++;
1080 goto reswitch;
1081 case 'S':
1082 forbid_setid("-S");
1083 dosearch = TRUE;
1084 s++;
1085 goto reswitch;
1086 case 'V':
3280af22
NIS		 1087 if (!PL_preambleav)
1088 PL_preambleav = newAV();
1089 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1090 if (*++s != ':') {
3280af22 1091 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1092#ifdef VMS
6b88bc9c 1093 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1094#else
3280af22 1095 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1096#endif
3280af22 1097 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1098# ifdef DEBUGGING
3280af22 1099 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1100# endif
6224f72b 1101# ifdef MULTIPLICITY
8f872242 1102 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1103# endif
b363f7ed
GS		 1104# ifdef USE_THREADS
1105 sv_catpv(PL_Sv," USE_THREADS");
1106# endif
ac5e8965
JH		 1107# ifdef USE_ITHREADS
1108 sv_catpv(PL_Sv," USE_ITHREADS");
1109# endif
10cc9d2a
JH		 1110# ifdef USE_64_BIT_INT
1111 sv_catpv(PL_Sv," USE_64_BIT_INT");
1112# endif
1113# ifdef USE_64_BIT_ALL
1114 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1115# endif
1116# ifdef USE_LONG_DOUBLE
1117 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1118# endif
53430762
JH		 1119# ifdef USE_LARGE_FILES
1120 sv_catpv(PL_Sv," USE_LARGE_FILES");
1121# endif
ac5e8965
JH		 1122# ifdef USE_SOCKS
1123 sv_catpv(PL_Sv," USE_SOCKS");
1124# endif
b363f7ed
GS		 1125# ifdef PERL_OBJECT
1126 sv_catpv(PL_Sv," PERL_OBJECT");
1127# endif
1128# ifdef PERL_IMPLICIT_CONTEXT
1129 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1130# endif
1131# ifdef PERL_IMPLICIT_SYS
1132 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1133# endif
3280af22 1134 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1135
6224f72b
GS		 1136#if defined(LOCAL_PATCH_COUNT)
1137 if (LOCAL_PATCH_COUNT > 0) {
1138 int i;
3280af22 1139 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1140 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1141 if (PL_localpatches[i])
cea2e8a9 1142 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1143 }
1144 }
1145#endif
cea2e8a9 1146 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1147#ifdef __DATE__
1148# ifdef __TIME__
cea2e8a9 1149 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1150# else
cea2e8a9 1151 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1152# endif
1153#endif
3280af22 1154 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1155$\"=\"\\n \"; \
1156@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1157print \" \\%ENV:\\n @env\\n\" if @env; \
1158print \" \\@INC:\\n @INC\\n\";");
1159 }
1160 else {
3280af22
NIS		 1161 PL_Sv = newSVpv("config_vars(qw(",0);
1162 sv_catpv(PL_Sv, ++s);
1163 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1164 s += strlen(s);
1165 }
3280af22 1166 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1167 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1168 goto reswitch;
1169 case 'x':
3280af22 1170 PL_doextract = TRUE;
6224f72b
GS		 1171 s++;
1172 if (*s)
f4c556ac 1173 cddir = s;
6224f72b
GS		 1174 break;
1175 case 0:
1176 break;
1177 case '-':
1178 if (!*++s || isSPACE(*s)) {
1179 argc--,argv++;
1180 goto switch_end;
1181 }
1182 /* catch use of gnu style long options */
1183 if (strEQ(s, "version")) {
1184 s = "v";
1185 goto reswitch;
1186 }
1187 if (strEQ(s, "help")) {
1188 s = "h";
1189 goto reswitch;
1190 }
1191 s--;
1192 /* FALL THROUGH */
1193 default:
cea2e8a9 1194 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1195 }
1196 }
6224f72b 1197 switch_end:
54310121 1198
f675dbe5
CB		 1199 if (
1200#ifndef SECURE_INTERNAL_GETENV
1201 !PL_tainting &&
1202#endif
659ca9ea 1203 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1204 {
659ca9ea 1205 s = savepv(popts);
74288ac8
GS		 1206 while (isSPACE(*s))
1207 s++;
1208 if (*s == '-' && *(s+1) == 'T')
1209 PL_tainting = TRUE;
1210 else {
1211 while (s && *s) {
4ea8f8fb 1212 char *d;
74288ac8
GS		 1213 while (isSPACE(*s))
1214 s++;
1215 if (*s == '-') {
1216 s++;
1217 if (isSPACE(*s))
1218 continue;
1219 }
4ea8f8fb 1220 d = s;
74288ac8
GS		 1221 if (!*s)
1222 break;
1223 if (!strchr("DIMUdmw", *s))
cea2e8a9 1224 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1225 while (++s && *s) {
1226 if (isSPACE(*s)) {
1227 *s++ = '\0';
1228 break;
1229 }
1230 }
1231 moreswitches(d);
6224f72b 1232 }
6224f72b
GS		 1233 }
1234 }
a0d0e21e 1235
6224f72b
GS		 1236 if (!scriptname)
1237 scriptname = argv[0];
3280af22 1238 if (PL_e_script) {
6224f72b
GS		 1239 argc++,argv--;
1240 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1241 }
1242 else if (scriptname == Nullch) {
1243#ifdef MSDOS
1244 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1245 moreswitches("h");
1246#endif
1247 scriptname = "-";
1248 }
1249
1250 init_perllib();
1251
1252 open_script(scriptname,dosearch,sv,&fdscript);
1253
1254 validate_suid(validarg, scriptname,fdscript);
1255
64ca3a65 1256#ifndef PERL_MICRO
0b5b802d
GS		 1257#if defined(SIGCHLD) || defined(SIGCLD)
1258 {
1259#ifndef SIGCHLD
1260# define SIGCHLD SIGCLD
1261#endif
1262 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1263 if (sigstate == SIG_IGN) {
1264 if (ckWARN(WARN_SIGNAL))
1265 Perl_warner(aTHX_ WARN_SIGNAL,
1266 "Can't ignore signal CHLD, forcing to default");
1267 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1268 }
1269 }
1270#endif
64ca3a65 1271#endif
0b5b802d 1272
bf4acbe4
GS		 1273#ifdef MACOS_TRADITIONAL
1274 if (PL_doextract || gMacPerl_AlwaysExtract) {
1275#else
f4c556ac 1276 if (PL_doextract) {
bf4acbe4 1277#endif
6224f72b 1278 find_beginning();
f4c556ac
GS		 1279 if (cddir && PerlDir_chdir(cddir) < 0)
1280 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1281
1282 }
6224f72b 1283
3280af22
NIS		 1284 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1285 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1286 CvUNIQUE_on(PL_compcv);
1287
1288 PL_comppad = newAV();
1289 av_push(PL_comppad, Nullsv);
1290 PL_curpad = AvARRAY(PL_comppad);
1291 PL_comppad_name = newAV();
1292 PL_comppad_name_fill = 0;
1293 PL_min_intro_pending = 0;
1294 PL_padix = 0;
6224f72b 1295#ifdef USE_THREADS
79cb57f6 1296 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1297 PL_curpad[0] = (SV*)newAV();
1298 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1299 CvOWNER(PL_compcv) = 0;
1300 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1301 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1302#endif /* USE_THREADS */
1303
1304 comppadlist = newAV();
1305 AvREAL_off(comppadlist);
3280af22
NIS		 1306 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1307 av_store(comppadlist, 1, (SV*)PL_comppad);
1308 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1309
0c4f7ff0 1310 boot_core_PerlIO();
6224f72b 1311 boot_core_UNIVERSAL();
9a34ef1d 1312#ifndef PERL_MICRO
09bef843 1313 boot_core_xsutils();
9a34ef1d 1314#endif
6224f72b
GS		 1315
1316 if (xsinit)
0cb96387 1317 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1318#ifndef PERL_MICRO
ed79a026 1319#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1320 init_os_extras();
6224f72b 1321#endif
64ca3a65 1322#endif
6224f72b 1323
29209bc5 1324#ifdef USE_SOCKS
1b9c9cf5
DH		 1325# ifdef HAS_SOCKS5_INIT
1326 socks5_init(argv[0]);
1327# else
29209bc5 1328 SOCKSinit(argv[0]);
1b9c9cf5 1329# endif
ac27b0f5 1330#endif
29209bc5 1331
6224f72b
GS		 1332 init_predump_symbols();
1333 /* init_postdump_symbols not currently designed to be called */
1334 /* more than once (ENV isn't cleared first, for example) */
1335 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1336 if (!PL_do_undump)
6224f72b
GS		 1337 init_postdump_symbols(argc,argv,env);
1338
1339 init_lexer();
1340
1341 /* now parse the script */
1342
1343 SETERRNO(0,SS$_NORMAL);
3280af22 1344 PL_error_count = 0;
bf4acbe4
GS		 1345#ifdef MACOS_TRADITIONAL
1346 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1347 if (PL_minus_c)
1348 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1349 else {
1350 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1351 MacPerl_MPWFileName(PL_origfilename));
1352 }
1353 }
1354#else
3280af22
NIS		 1355 if (yyparse() || PL_error_count) {
1356 if (PL_minus_c)
cea2e8a9 1357 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1358 else {
cea2e8a9 1359 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1360 PL_origfilename);
6224f72b
GS		 1361 }
1362 }
bf4acbe4 1363#endif
57843af0 1364 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1365 PL_curstash = PL_defstash;
1366 PL_preprocess = FALSE;
1367 if (PL_e_script) {
1368 SvREFCNT_dec(PL_e_script);
1369 PL_e_script = Nullsv;
6224f72b
GS		 1370 }
1371
1372 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1373 SvREFCNT_dec(PL_rs);
1374 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1375 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1376 if (PL_do_undump)
6224f72b
GS		 1377 my_unexec();
1378
57843af0
GS		 1379 if (isWARN_ONCE) {
1380 SAVECOPFILE(PL_curcop);
1381 SAVECOPLINE(PL_curcop);
3280af22 1382 gv_check(PL_defstash);
57843af0 1383 }
6224f72b
GS		 1384
1385 LEAVE;
1386 FREETMPS;
1387
1388#ifdef MYMALLOC
1389 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1390 dump_mstats("after compilation:");
1391#endif
1392
1393 ENTER;
3280af22 1394 PL_restartop = 0;
312caa8e 1395 return NULL;
6224f72b
GS		 1396}
1397
954c1994
GS		 1398/*
1399=for apidoc perl_run
1400
1401Tells a Perl interpreter to run. See L<perlembed>.
1402
1403=cut
1404*/
1405
6224f72b 1406int
0cb96387 1407perl_run(pTHXx)
6224f72b 1408{
6224f72b 1409 I32 oldscope;
14dd3ad8 1410 int ret = 0;
db36c5a1 1411 dJMPENV;
cea2e8a9
GS		 1412#ifdef USE_THREADS
1413 dTHX;
1414#endif
6224f72b 1415
3280af22 1416 oldscope = PL_scopestack_ix;
6224f72b 1417
14dd3ad8 1418#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1419 redo_body:
14dd3ad8
GS		 1420 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1421#else
1422 JMPENV_PUSH(ret);
1423#endif
6224f72b
GS		 1424 switch (ret) {
1425 case 1:
1426 cxstack_ix = -1; /* start context stack again */
312caa8e 1427 goto redo_body;
14dd3ad8
GS		 1428 case 0: /* normal completion */
1429#ifndef PERL_FLEXIBLE_EXCEPTIONS
1430 redo_body:
1431 run_body(oldscope);
1432#endif
1433 /* FALL THROUGH */
1434 case 2: /* my_exit() */
3280af22 1435 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1436 LEAVE;
1437 FREETMPS;
3280af22 1438 PL_curstash = PL_defstash;
865be832 1439 if (PL_endav && !PL_minus_c)
3280af22 1440 call_list(oldscope, PL_endav);
6224f72b
GS		 1441#ifdef MYMALLOC
1442 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1443 dump_mstats("after execution: ");
1444#endif
14dd3ad8
GS		 1445 ret = STATUS_NATIVE_EXPORT;
1446 break;
6224f72b 1447 case 3:
312caa8e
CS		 1448 if (PL_restartop) {
1449 POPSTACK_TO(PL_mainstack);
1450 goto redo_body;
6224f72b 1451 }
bf49b057 1452 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1453 FREETMPS;
14dd3ad8
GS		 1454 ret = 1;
1455 break;
6224f72b
GS		 1456 }
1457
14dd3ad8
GS		 1458 JMPENV_POP;
1459 return ret;
312caa8e
CS		 1460}
1461
14dd3ad8 1462#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1463STATIC void *
14dd3ad8 1464S_vrun_body(pTHX_ va_list args)
312caa8e 1465{
312caa8e
CS		 1466 I32 oldscope = va_arg(args, I32);
1467
14dd3ad8
GS		 1468 return run_body(oldscope);
1469}
1470#endif
1471
1472
1473STATIC void *
1474S_run_body(pTHX_ I32 oldscope)
1475{
6224f72b 1476 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1477 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1478
3280af22 1479 if (!PL_restartop) {
6224f72b
GS		 1480 DEBUG_x(dump_all());
1481 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1482 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1483 PTR2UV(thr)));
6224f72b 1484
3280af22 1485 if (PL_minus_c) {
bf4acbe4
GS		 1486#ifdef MACOS_TRADITIONAL
1487 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1488#else
bf49b057 1489 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1490#endif
6224f72b
GS		 1491 my_exit(0);
1492 }
3280af22 1493 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1494 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1495 if (PL_initav)
1496 call_list(oldscope, PL_initav);
6224f72b
GS		 1497 }
1498
1499 /* do it */
1500
3280af22 1501 if (PL_restartop) {
533c011a 1502 PL_op = PL_restartop;
3280af22 1503 PL_restartop = 0;
cea2e8a9 1504 CALLRUNOPS(aTHX);
6224f72b 1505 }
3280af22
NIS		 1506 else if (PL_main_start) {
1507 CvDEPTH(PL_main_cv) = 1;
533c011a 1508 PL_op = PL_main_start;
cea2e8a9 1509 CALLRUNOPS(aTHX);
6224f72b
GS		 1510 }
1511
f6b3007c
JH		 1512 my_exit(0);
1513 /* NOTREACHED */
312caa8e 1514 return NULL;
6224f72b
GS		 1515}
1516
954c1994
GS		 1517/*
1518=for apidoc p||get_sv
1519
1520Returns the SV of the specified Perl scalar. If C<create> is set and the
1521Perl variable does not exist then it will be created. If C<create> is not
1522set and the variable does not exist then NULL is returned.
1523
1524=cut
1525*/
1526
6224f72b 1527SV*
864dbfa3 1528Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1529{
1530 GV *gv;
1531#ifdef USE_THREADS
1532 if (name[1] == '\0' && !isALPHA(name[0])) {
1533 PADOFFSET tmp = find_threadsv(name);
411caa50 1534 if (tmp != NOT_IN_PAD)
6224f72b 1535 return THREADSV(tmp);
6224f72b
GS		 1536 }
1537#endif /* USE_THREADS */
1538 gv = gv_fetchpv(name, create, SVt_PV);
1539 if (gv)
1540 return GvSV(gv);
1541 return Nullsv;
1542}
1543
954c1994
GS		 1544/*
1545=for apidoc p||get_av
1546
1547Returns the AV of the specified Perl array. If C<create> is set and the
1548Perl variable does not exist then it will be created. If C<create> is not
1549set and the variable does not exist then NULL is returned.
1550
1551=cut
1552*/
1553
6224f72b 1554AV*
864dbfa3 1555Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1556{
1557 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1558 if (create)
1559 return GvAVn(gv);
1560 if (gv)
1561 return GvAV(gv);
1562 return Nullav;
1563}
1564
954c1994
GS		 1565/*
1566=for apidoc p||get_hv
1567
1568Returns the HV of the specified Perl hash. If C<create> is set and the
1569Perl variable does not exist then it will be created. If C<create> is not
1570set and the variable does not exist then NULL is returned.
1571
1572=cut
1573*/
1574
6224f72b 1575HV*
864dbfa3 1576Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1577{
a0d0e21e
LW		 1578 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1579 if (create)
1580 return GvHVn(gv);
1581 if (gv)
1582 return GvHV(gv);
1583 return Nullhv;
1584}
1585
954c1994
GS		 1586/*
1587=for apidoc p||get_cv
1588
1589Returns the CV of the specified Perl subroutine. If C<create> is set and
1590the Perl subroutine does not exist then it will be declared (which has the
1591same effect as saying C<sub name;>). If C<create> is not set and the
1592subroutine does not exist then NULL is returned.
1593
1594=cut
1595*/
1596
a0d0e21e 1597CV*
864dbfa3 1598Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1599{
1600 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1601 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1602 /* XXX this is probably not what they think they're getting.
1603 * It has the same effect as "sub name;", i.e. just a forward
1604 * declaration! */
8ebc5c01 1605 if (create && !GvCVu(gv))
774d564b 1606 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1607 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1608 Nullop,
a0d0e21e
LW		 1609 Nullop);
1610 if (gv)
8ebc5c01 1611 return GvCVu(gv);
a0d0e21e
LW		 1612 return Nullcv;
1613}
1614
79072805
LW		 1615/* Be sure to refetch the stack pointer after calling these routines. */
1616
954c1994
GS		 1617/*
1618=for apidoc p||call_argv
1619
1620Performs a callback to the specified Perl sub. See L<perlcall>.
1621
1622=cut
1623*/
1624
a0d0e21e 1625I32
864dbfa3 1626Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1627
8ac85365
NIS		 1628 /* See G_* flags in cop.h */
1629 /* null terminated arg list */
8990e307 1630{
a0d0e21e 1631 dSP;
8990e307 1632
924508f0 1633 PUSHMARK(SP);
a0d0e21e 1634 if (argv) {
8990e307 1635 while (*argv) {
a0d0e21e 1636 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1637 argv++;
1638 }
a0d0e21e 1639 PUTBACK;
8990e307 1640 }
864dbfa3 1641 return call_pv(sub_name, flags);
8990e307
LW		 1642}
1643
954c1994
GS		 1644/*
1645=for apidoc p||call_pv
1646
1647Performs a callback to the specified Perl sub. See L<perlcall>.
1648
1649=cut
1650*/
1651
a0d0e21e 1652I32
864dbfa3 1653Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1654 /* name of the subroutine */
1655 /* See G_* flags in cop.h */
a0d0e21e 1656{
864dbfa3 1657 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1658}
1659
954c1994
GS		 1660/*
1661=for apidoc p||call_method
1662
1663Performs a callback to the specified Perl method. The blessed object must
1664be on the stack. See L<perlcall>.
1665
1666=cut
1667*/
1668
a0d0e21e 1669I32
864dbfa3 1670Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1671 /* name of the subroutine */
1672 /* See G_* flags in cop.h */
a0d0e21e 1673{
968b3946 1674 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1675}
1676
1677/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1678/*
1679=for apidoc p||call_sv
1680
1681Performs a callback to the Perl sub whose name is in the SV. See
1682L<perlcall>.
1683
1684=cut
1685*/
1686
a0d0e21e 1687I32
864dbfa3 1688Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1689 /* See G_* flags in cop.h */
a0d0e21e 1690{
924508f0 1691 dSP;
a0d0e21e 1692 LOGOP myop; /* fake syntax tree node */
968b3946 1693 UNOP method_op;
aa689395 1694 I32 oldmark;
13689cfe 1695 volatile I32 retval = 0;
a0d0e21e 1696 I32 oldscope;
54310121 1697 bool oldcatch = CATCH_GET;
6224f72b 1698 int ret;
533c011a 1699 OP* oldop = PL_op;
db36c5a1 1700 dJMPENV;
1e422769 1701
a0d0e21e
LW		 1702 if (flags & G_DISCARD) {
1703 ENTER;
1704 SAVETMPS;
1705 }
1706
aa689395 1707 Zero(&myop, 1, LOGOP);
54310121 1708 myop.op_next = Nullop;
f51d4af5 1709 if (!(flags & G_NOARGS))
aa689395 1710 myop.op_flags |= OPf_STACKED;
54310121 1711 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1712 (flags & G_ARRAY) ? OPf_WANT_LIST :
1713 OPf_WANT_SCALAR);
462e5cf6 1714 SAVEOP();
533c011a 1715 PL_op = (OP*)&myop;
aa689395 1716
3280af22
NIS		 1717 EXTEND(PL_stack_sp, 1);
1718 *++PL_stack_sp = sv;
aa689395 1719 oldmark = TOPMARK;
3280af22 1720 oldscope = PL_scopestack_ix;
a0d0e21e 1721
3280af22 1722 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1723 /* Handle first BEGIN of -d. */
3280af22 1724 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1725 /* Try harder, since this may have been a sighandler, thus
1726 * curstash may be meaningless. */
3280af22 1727 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1728 && !(flags & G_NODEBUG))
533c011a 1729 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1730
968b3946
GS		 1731 if (flags & G_METHOD) {
1732 Zero(&method_op, 1, UNOP);
1733 method_op.op_next = PL_op;
1734 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1735 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1736 PL_op = (OP*)&method_op;
968b3946
GS		 1737 }
1738
312caa8e 1739 if (!(flags & G_EVAL)) {
0cdb2077 1740 CATCH_SET(TRUE);
14dd3ad8 1741 call_body((OP*)&myop, FALSE);
312caa8e 1742 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1743 CATCH_SET(oldcatch);
312caa8e
CS		 1744 }
1745 else {
d78bda3d 1746 myop.op_other = (OP*)&myop;
3280af22 1747 PL_markstack_ptr--;
4633a7c4
LW		 1748 /* we're trying to emulate pp_entertry() here */
1749 {
c09156bb 1750 register PERL_CONTEXT *cx;
54310121 1751 I32 gimme = GIMME_V;
ac27b0f5 1752
4633a7c4
LW		 1753 ENTER;
1754 SAVETMPS;
ac27b0f5 1755
968b3946 1756 push_return(Nullop);
1d76a5c3 1757 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1758 PUSHEVAL(cx, 0, 0);
533c011a 1759 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1760
faef0170 1761 PL_in_eval = EVAL_INEVAL;
4633a7c4 1762 if (flags & G_KEEPERR)
faef0170 1763 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1764 else
38a03e6e 1765 sv_setpv(ERRSV,"");
4633a7c4 1766 }
3280af22 1767 PL_markstack_ptr++;
a0d0e21e 1768
14dd3ad8
GS		 1769#ifdef PERL_FLEXIBLE_EXCEPTIONS
1770 redo_body:
1771 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1772 (OP*)&myop, FALSE);
14dd3ad8
GS		 1773#else
1774 JMPENV_PUSH(ret);
1775#endif
6224f72b
GS		 1776 switch (ret) {
1777 case 0:
14dd3ad8
GS		 1778#ifndef PERL_FLEXIBLE_EXCEPTIONS
1779 redo_body:
1780 call_body((OP*)&myop, FALSE);
1781#endif
312caa8e
CS		 1782 retval = PL_stack_sp - (PL_stack_base + oldmark);
1783 if (!(flags & G_KEEPERR))
1784 sv_setpv(ERRSV,"");
a0d0e21e 1785 break;
6224f72b 1786 case 1:
f86702cc 1787 STATUS_ALL_FAILURE;
a0d0e21e 1788 /* FALL THROUGH */
6224f72b 1789 case 2:
a0d0e21e 1790 /* my_exit() was called */
3280af22 1791 PL_curstash = PL_defstash;
a0d0e21e 1792 FREETMPS;
14dd3ad8 1793 JMPENV_POP;
cc3604b1 1794 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1795 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1796 my_exit_jump();
a0d0e21e 1797 /* NOTREACHED */
6224f72b 1798 case 3:
3280af22 1799 if (PL_restartop) {
533c011a 1800 PL_op = PL_restartop;
3280af22 1801 PL_restartop = 0;
312caa8e 1802 goto redo_body;
a0d0e21e 1803 }
3280af22 1804 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1805 if (flags & G_ARRAY)
1806 retval = 0;
1807 else {
1808 retval = 1;
3280af22 1809 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1810 }
312caa8e 1811 break;
a0d0e21e 1812 }
a0d0e21e 1813
3280af22 1814 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1815 SV **newsp;
1816 PMOP *newpm;
1817 I32 gimme;
c09156bb 1818 register PERL_CONTEXT *cx;
a0a2876f
LW		 1819 I32 optype;
1820
1821 POPBLOCK(cx,newpm);
1822 POPEVAL(cx);
1823 pop_return();
3280af22 1824 PL_curpm = newpm;
a0a2876f 1825 LEAVE;
a0d0e21e 1826 }
14dd3ad8 1827 JMPENV_POP;
a0d0e21e 1828 }
1e422769 1829
a0d0e21e 1830 if (flags & G_DISCARD) {
3280af22 1831 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1832 retval = 0;
1833 FREETMPS;
1834 LEAVE;
1835 }
533c011a 1836 PL_op = oldop;
a0d0e21e
LW		 1837 return retval;
1838}
1839
14dd3ad8 1840#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1841STATIC void *
14dd3ad8 1842S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1843{
1844 OP *myop = va_arg(args, OP*);
1845 int is_eval = va_arg(args, int);
1846
14dd3ad8 1847 call_body(myop, is_eval);
312caa8e
CS		 1848 return NULL;
1849}
14dd3ad8 1850#endif
312caa8e
CS		 1851
1852STATIC void
14dd3ad8 1853S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1854{
312caa8e
CS		 1855 if (PL_op == myop) {
1856 if (is_eval)
f807eda9 1857 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1858 else
f807eda9 1859 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1860 }
1861 if (PL_op)
cea2e8a9 1862 CALLRUNOPS(aTHX);
312caa8e
CS		 1863}
1864
6e72f9df 1865/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1866
954c1994
GS		 1867/*
1868=for apidoc p||eval_sv
1869
1870Tells Perl to C<eval> the string in the SV.
1871
1872=cut
1873*/
1874
a0d0e21e 1875I32
864dbfa3 1876Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1877
8ac85365 1878 /* See G_* flags in cop.h */
a0d0e21e 1879{
924508f0 1880 dSP;
a0d0e21e 1881 UNOP myop; /* fake syntax tree node */
8fa7f367 1882 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1883 volatile I32 retval = 0;
4633a7c4 1884 I32 oldscope;
6224f72b 1885 int ret;
533c011a 1886 OP* oldop = PL_op;
db36c5a1 1887 dJMPENV;
84902520 1888
4633a7c4
LW		 1889 if (flags & G_DISCARD) {
1890 ENTER;
1891 SAVETMPS;
1892 }
1893
462e5cf6 1894 SAVEOP();
533c011a
NIS		 1895 PL_op = (OP*)&myop;
1896 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1897 EXTEND(PL_stack_sp, 1);
1898 *++PL_stack_sp = sv;
1899 oldscope = PL_scopestack_ix;
79072805 1900
4633a7c4
LW		 1901 if (!(flags & G_NOARGS))
1902 myop.op_flags = OPf_STACKED;
79072805 1903 myop.op_next = Nullop;
6e72f9df 1904 myop.op_type = OP_ENTEREVAL;
54310121 1905 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1906 (flags & G_ARRAY) ? OPf_WANT_LIST :
1907 OPf_WANT_SCALAR);
6e72f9df 1908 if (flags & G_KEEPERR)
1909 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1910
14dd3ad8 1911#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1912 redo_body:
14dd3ad8 1913 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1914 (OP*)&myop, TRUE);
14dd3ad8
GS		 1915#else
1916 JMPENV_PUSH(ret);
1917#endif
6224f72b
GS		 1918 switch (ret) {
1919 case 0:
14dd3ad8
GS		 1920#ifndef PERL_FLEXIBLE_EXCEPTIONS
1921 redo_body:
1922 call_body((OP*)&myop,TRUE);
1923#endif
312caa8e
CS		 1924 retval = PL_stack_sp - (PL_stack_base + oldmark);
1925 if (!(flags & G_KEEPERR))
1926 sv_setpv(ERRSV,"");
4633a7c4 1927 break;
6224f72b 1928 case 1:
f86702cc 1929 STATUS_ALL_FAILURE;
4633a7c4 1930 /* FALL THROUGH */
6224f72b 1931 case 2:
4633a7c4 1932 /* my_exit() was called */
3280af22 1933 PL_curstash = PL_defstash;
4633a7c4 1934 FREETMPS;
14dd3ad8 1935 JMPENV_POP;
cc3604b1 1936 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1937 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1938 my_exit_jump();
4633a7c4 1939 /* NOTREACHED */
6224f72b 1940 case 3:
3280af22 1941 if (PL_restartop) {
533c011a 1942 PL_op = PL_restartop;
3280af22 1943 PL_restartop = 0;
312caa8e 1944 goto redo_body;
4633a7c4 1945 }
3280af22 1946 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1947 if (flags & G_ARRAY)
1948 retval = 0;
1949 else {
1950 retval = 1;
3280af22 1951 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1952 }
312caa8e 1953 break;
4633a7c4
LW		 1954 }
1955
14dd3ad8 1956 JMPENV_POP;
4633a7c4 1957 if (flags & G_DISCARD) {
3280af22 1958 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1959 retval = 0;
1960 FREETMPS;
1961 LEAVE;
1962 }
533c011a 1963 PL_op = oldop;
4633a7c4
LW		 1964 return retval;
1965}
1966
954c1994
GS		 1967/*
1968=for apidoc p||eval_pv
1969
1970Tells Perl to C<eval> the given string and return an SV* result.
1971
1972=cut
1973*/
1974
137443ea 1975SV*
864dbfa3 1976Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1977{
1978 dSP;
1979 SV* sv = newSVpv(p, 0);
1980
864dbfa3 1981 eval_sv(sv, G_SCALAR);
137443ea 1982 SvREFCNT_dec(sv);
1983
1984 SPAGAIN;
1985 sv = POPs;
1986 PUTBACK;
1987
2d8e6c8d
GS		 1988 if (croak_on_error && SvTRUE(ERRSV)) {
1989 STRLEN n_a;
cea2e8a9 1990 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1991 }
137443ea 1992
1993 return sv;
1994}
1995
4633a7c4
LW		 1996/* Require a module. */
1997
954c1994
GS		 1998/*
1999=for apidoc p||require_pv
2000
7d3fb230
BS		 2001Tells Perl to C<require> the file named by the string argument. It is
2002analogous to the Perl code C<eval "require '$file'">. It's even
2003implemented that way; consider using Perl_load_module instead.
954c1994 2004
7d3fb230 2005=cut */
954c1994 2006
4633a7c4 2007void
864dbfa3 2008Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2009{
d3acc0f7
JP		 2010 SV* sv;
2011 dSP;
e788e7d3 2012 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2013 PUTBACK;
2014 sv = sv_newmortal();
4633a7c4
LW		 2015 sv_setpv(sv, "require '");
2016 sv_catpv(sv, pv);
2017 sv_catpv(sv, "'");
864dbfa3 2018 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2019 SPAGAIN;
2020 POPSTACK;
79072805
LW		 2021}
2022
79072805 2023void
864dbfa3 2024Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2025{
2026 register GV *gv;
2027
155aba94 2028 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2029 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2030}
2031
76e3520e 2032STATIC void
cea2e8a9 2033S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2034{
ab821d7f 2035 /* This message really ought to be max 23 lines.
2036 * Removed -h because the user already knows that opton. Others? */
fb73857a 2037
76e3520e 2038 static char *usage_msg[] = {
fb73857a 2039"-0[octal] specify record separator (\\0, if no argument)",
2040"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2041"-C enable native wide character system interfaces",
1950ee41 2042"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2043"-d[:debugger] run program under debugger",
2044"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2045"-e 'command' one line of program (several -e's allowed, omit programfile)",
2046"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2047"-i[extension] edit <> files in place (makes backup if extension supplied)",
2048"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2049"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2050"-[mM][-]module execute `use/no module...' before executing program",
2051"-n assume 'while (<>) { ... }' loop around program",
2052"-p assume loop like -n but print line also, like sed",
2053"-P run program through C preprocessor before compilation",
2054"-s enable rudimentary parsing for switches after programfile",
2055"-S look for programfile using PATH environment variable",
2056"-T enable tainting checks",
2057"-u dump core after parsing program",
fb73857a 2058"-U allow unsafe operations",
aac3bd0d
GS		 2059"-v print version, subversion (includes VERY IMPORTANT perl info)",
2060"-V[:variable] print configuration summary (or a single Config.pm variable)",
2061"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2062"-W enable all warnings",
2063"-X disable all warnings",
fb73857a 2064"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2065"\n",
2066NULL
2067};
76e3520e 2068 char **p = usage_msg;
fb73857a 2069
b0e47665
GS		 2070 PerlIO_printf(PerlIO_stdout(),
2071 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2072 name);
fb73857a 2073 while (*p)
b0e47665 2074 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2075}
2076
79072805
LW		 2077/* This routine handles any switches that can be given during run */
2078
2079char *
864dbfa3 2080Perl_moreswitches(pTHX_ char *s)
79072805 2081{
ba210ebe 2082 STRLEN numlen;
c07a80fd 2083 U32 rschar;
79072805
LW		 2084
2085 switch (*s) {
2086 case '0':
a863c7d1 2087 {
b21ed0a9 2088 numlen = 0; /* disallow underscores */
dff6d3cd 2089 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2090 SvREFCNT_dec(PL_nrs);
c07a80fd 2091 if (rschar & ~((U8)~0))
3280af22 2092 PL_nrs = &PL_sv_undef;
c07a80fd 2093 else if (!rschar && numlen >= 2)
79cb57f6 2094 PL_nrs = newSVpvn("", 0);
c07a80fd 2095 else {
2096 char ch = rschar;
79cb57f6 2097 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2098 }
2099 return s + numlen;
a863c7d1 2100 }
46487f74
GS		 2101 case 'C':
2102 PL_widesyscalls = TRUE;
2103 s++;
2104 return s;
2304df62 2105 case 'F':
3280af22
NIS		 2106 PL_minus_F = TRUE;
2107 PL_splitstr = savepv(s + 1);
2304df62
AD		 2108 s += strlen(s);
2109 return s;
79072805 2110 case 'a':
3280af22 2111 PL_minus_a = TRUE;
79072805
LW		 2112 s++;
2113 return s;
2114 case 'c':
3280af22 2115 PL_minus_c = TRUE;
79072805
LW		 2116 s++;
2117 return s;
2118 case 'd':
bbce6d69 2119 forbid_setid("-d");
4633a7c4 2120 s++;
70c94a19
RR		 2121 /* The following permits -d:Mod to accepts arguments following an =
2122 in the fashion that -MSome::Mod does. */
2123 if (*s == ':' || *s == '=') {
2124 char *start;
2125 SV *sv;
2126 sv = newSVpv("use Devel::", 0);
2127 start = ++s;
2128 /* We now allow -d:Module=Foo,Bar */
2129 while(isALNUM(*s) || *s==':') ++s;
2130 if (*s != '=')
2131 sv_catpv(sv, start);
2132 else {
2133 sv_catpvn(sv, start, s-start);
2134 sv_catpv(sv, " split(/,/,q{");
2135 sv_catpv(sv, ++s);
2136 sv_catpv(sv, "})");
2137 }
4633a7c4 2138 s += strlen(s);
70c94a19 2139 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2140 }
ed094faf 2141 if (!PL_perldb) {
3280af22 2142 PL_perldb = PERLDB_ALL;
a0d0e21e 2143 init_debugger();
ed094faf 2144 }
79072805
LW		 2145 return s;
2146 case 'D':
0453d815 2147 {
79072805 2148#ifdef DEBUGGING
bbce6d69 2149 forbid_setid("-D");
79072805 2150 if (isALPHA(s[1])) {
04932ac8
DM		 2151 /* if adding extra options, remember to update DEBUG_MASK */
2152 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2153 char *d;
2154
93a17b20 2155 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2156 PL_debug |= 1 << (d - debopts);
79072805
LW		 2157 }
2158 else {
3280af22 2159 PL_debug = atoi(s+1);
79072805
LW		 2160 for (s++; isDIGIT(*s); s++) ;
2161 }
aea4f609 2162 PL_debug |= DEBUG_TOP_FLAG;
79072805 2163#else
0453d815
PM		 2164 if (ckWARN_d(WARN_DEBUGGING))
2165 Perl_warner(aTHX_ WARN_DEBUGGING,
2166 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2167 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2168#endif
2169 /*SUPPRESS 530*/
2170 return s;
0453d815 2171 }
4633a7c4 2172 case 'h':
ac27b0f5 2173 usage(PL_origargv[0]);
6ad3d225 2174 PerlProc_exit(0);
79072805 2175 case 'i':
3280af22
NIS		 2176 if (PL_inplace)
2177 Safefree(PL_inplace);
2178 PL_inplace = savepv(s+1);
79072805 2179 /*SUPPRESS 530*/
3280af22 2180 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2181 if (*s) {
fb73857a 2182 *s++ = '\0';
7b8d334a
GS		 2183 if (*s == '-') /* Additional switches on #! line. */
2184 s++;
2185 }
fb73857a 2186 return s;
2187 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2188 forbid_setid("-I");
fb73857a 2189 ++s;
2190 while (*s && isSPACE(*s))
2191 ++s;
2192 if (*s) {
774d564b 2193 char *e, *p;
0df16ed7
GS		 2194 p = s;
2195 /* ignore trailing spaces (possibly followed by other switches) */
2196 do {
2197 for (e = p; *e && !isSPACE(*e); e++) ;
2198 p = e;
2199 while (isSPACE(*p))
2200 p++;
2201 } while (*p && *p != '-');
2202 e = savepvn(s, e-s);
9c8a64f0 2203 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2204 Safefree(e);
2205 s = p;
2206 if (*s == '-')
2207 s++;
79072805
LW		 2208 }
2209 else
a67e862a 2210 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2211 return s;
79072805 2212 case 'l':
3280af22 2213 PL_minus_l = TRUE;
79072805 2214 s++;
7889fe52
NIS		 2215 if (PL_ors_sv) {
2216 SvREFCNT_dec(PL_ors_sv);
2217 PL_ors_sv = Nullsv;
2218 }
79072805 2219 if (isDIGIT(*s)) {
7889fe52 2220 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2221 numlen = 0; /* disallow underscores */
7889fe52 2222 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2223 s += numlen;
2224 }
2225 else {
3280af22 2226 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2227 PL_ors_sv = newSVpvn("\n\n",2);
2228 }
2229 else {
2230 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2231 }
79072805
LW		 2232 }
2233 return s;
1a30305b 2234 case 'M':
bbce6d69 2235 forbid_setid("-M"); /* XXX ? */
1a30305b 2236 /* FALL THROUGH */
2237 case 'm':
bbce6d69 2238 forbid_setid("-m"); /* XXX ? */
1a30305b 2239 if (*++s) {
a5f75d66 2240 char *start;
11343788 2241 SV *sv;
a5f75d66
AD		 2242 char *use = "use ";
2243 /* -M-foo == 'no foo' */
2244 if (*s == '-') { use = "no "; ++s; }
11343788 2245 sv = newSVpv(use,0);
a5f75d66 2246 start = s;
1a30305b 2247 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2248 while(isALNUM(*s) || *s==':') ++s;
2249 if (*s != '=') {
11343788 2250 sv_catpv(sv, start);
c07a80fd 2251 if (*(start-1) == 'm') {
2252 if (*s != '\0')
cea2e8a9 2253 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2254 sv_catpv( sv, " ()");
c07a80fd 2255 }
2256 } else {
6df41af2 2257 if (s == start)
be98fb35
GS		 2258 Perl_croak(aTHX_ "Module name required with -%c option",
2259 s[-1]);
11343788
MB		 2260 sv_catpvn(sv, start, s-start);
2261 sv_catpv(sv, " split(/,/,q{");
2262 sv_catpv(sv, ++s);
2263 sv_catpv(sv, "})");
c07a80fd 2264 }
1a30305b 2265 s += strlen(s);
5c831c24 2266 if (!PL_preambleav)
3280af22
NIS		 2267 PL_preambleav = newAV();
2268 av_push(PL_preambleav, sv);
1a30305b 2269 }
2270 else
cea2e8a9 2271 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2272 return s;
79072805 2273 case 'n':
3280af22 2274 PL_minus_n = TRUE;
79072805
LW		 2275 s++;
2276 return s;
2277 case 'p':
3280af22 2278 PL_minus_p = TRUE;
79072805
LW		 2279 s++;
2280 return s;
2281 case 's':
bbce6d69 2282 forbid_setid("-s");
3280af22 2283 PL_doswitches = TRUE;
79072805
LW		 2284 s++;
2285 return s;
463ee0b2 2286 case 'T':
3280af22 2287 if (!PL_tainting)
cea2e8a9 2288 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2289 s++;
2290 return s;
79072805 2291 case 'u':
bf4acbe4
GS		 2292#ifdef MACOS_TRADITIONAL
2293 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2294#endif
3280af22 2295 PL_do_undump = TRUE;
79072805
LW		 2296 s++;
2297 return s;
2298 case 'U':
3280af22 2299 PL_unsafe = TRUE;
79072805
LW		 2300 s++;
2301 return s;
2302 case 'v':
8e9464f1 2303#if !defined(DGUX)
b0e47665 2304 PerlIO_printf(PerlIO_stdout(),
d2560b70 2305 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2306 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2307#else /* DGUX */
2308/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2309 PerlIO_printf(PerlIO_stdout(),
2310 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2311 PerlIO_printf(PerlIO_stdout(),
2312 Perl_form(aTHX_ " built under %s at %s %s\n",
2313 OSNAME, __DATE__, __TIME__));
2314 PerlIO_printf(PerlIO_stdout(),
2315 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2316 OSVERS));
8e9464f1
JH		 2317#endif /* !DGUX */
2318
fb73857a 2319#if defined(LOCAL_PATCH_COUNT)
2320 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2321 PerlIO_printf(PerlIO_stdout(),
2322 "\n(with %d registered patch%s, "
2323 "see perl -V for more detail)",
2324 (int)LOCAL_PATCH_COUNT,
2325 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2326#endif
1a30305b 2327
b0e47665 2328 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2329 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2330#ifdef MACOS_TRADITIONAL
2331 PerlIO_printf(PerlIO_stdout(),
084592ab 2332 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2333#endif
79072805 2334#ifdef MSDOS
b0e47665
GS		 2335 PerlIO_printf(PerlIO_stdout(),
2336 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2337#endif
2338#ifdef DJGPP
b0e47665
GS		 2339 PerlIO_printf(PerlIO_stdout(),
2340 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2341 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2342#endif
79072805 2343#ifdef OS2
b0e47665
GS		 2344 PerlIO_printf(PerlIO_stdout(),
2345 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2346 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2347#endif
79072805 2348#ifdef atarist
b0e47665
GS		 2349 PerlIO_printf(PerlIO_stdout(),
2350 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2351#endif
a3f9223b 2352#ifdef __BEOS__
b0e47665
GS		 2353 PerlIO_printf(PerlIO_stdout(),
2354 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2355#endif
1d84e8df 2356#ifdef MPE
b0e47665
GS		 2357 PerlIO_printf(PerlIO_stdout(),
2358 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2359#endif
9d116dd7 2360#ifdef OEMVS
b0e47665
GS		 2361 PerlIO_printf(PerlIO_stdout(),
2362 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2363#endif
495c5fdc 2364#ifdef __VOS__
b0e47665
GS		 2365 PerlIO_printf(PerlIO_stdout(),
2366 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2367#endif
092bebab 2368#ifdef __OPEN_VM
b0e47665
GS		 2369 PerlIO_printf(PerlIO_stdout(),
2370 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2371#endif
a1a0e61e 2372#ifdef POSIX_BC
b0e47665
GS		 2373 PerlIO_printf(PerlIO_stdout(),
2374 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2375#endif
61ae2fbf 2376#ifdef __MINT__
b0e47665
GS		 2377 PerlIO_printf(PerlIO_stdout(),
2378 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2379#endif
f83d2536 2380#ifdef EPOC
b0e47665
GS		 2381 PerlIO_printf(PerlIO_stdout(),
2382 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2383#endif
baed7233
DL		 2384#ifdef BINARY_BUILD_NOTICE
2385 BINARY_BUILD_NOTICE;
2386#endif
b0e47665
GS		 2387 PerlIO_printf(PerlIO_stdout(),
2388 "\n\
79072805 2389Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2390GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2391Complete documentation for Perl, including FAQ lists, should be found on\n\
2392this system using `man perl' or `perldoc perl'. If you have access to the\n\
2393Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2394 PerlProc_exit(0);
79072805 2395 case 'w':
599cee73 2396 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2397 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2398 s++;
2399 return s;
2400 case 'W':
ac27b0f5 2401 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2402 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2403 s++;
2404 return s;
2405 case 'X':
ac27b0f5 2406 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2407 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2408 s++;
2409 return s;
a0d0e21e 2410 case '*':
79072805
LW		 2411 case ' ':
2412 if (s[1] == '-') /* Additional switches on #! line. */
2413 return s+2;
2414 break;
a0d0e21e 2415 case '-':
79072805 2416 case 0:
51882d45 2417#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2418 case '\r':
2419#endif
79072805
LW		 2420 case '\n':
2421 case '\t':
2422 break;
aa689395 2423#ifdef ALTERNATE_SHEBANG
2424 case 'S': /* OS/2 needs -S on "extproc" line. */
2425 break;
2426#endif
a0d0e21e 2427 case 'P':
3280af22 2428 if (PL_preprocess)
a0d0e21e
LW		 2429 return s+1;
2430 /* FALL THROUGH */
79072805 2431 default:
cea2e8a9 2432 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2433 }
2434 return Nullch;
2435}
2436
2437/* compliments of Tom Christiansen */
2438
2439/* unexec() can be found in the Gnu emacs distribution */
ee580363 2440/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2441
2442void
864dbfa3 2443Perl_my_unexec(pTHX)
79072805
LW		 2444{
2445#ifdef UNEXEC
46fc3d4c 2446 SV* prog;
2447 SV* file;
ee580363 2448 int status = 1;
79072805
LW		 2449 extern int etext;
2450
ee580363 2451 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2452 sv_catpv(prog, "/perl");
6b88bc9c 2453 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2454 sv_catpv(file, ".perldump");
79072805 2455
ee580363
GS		 2456 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2457 /* unexec prints msg to stderr in case of failure */
6ad3d225 2458 PerlProc_exit(status);
79072805 2459#else
a5f75d66
AD		 2460# ifdef VMS
2461# include <lib$routines.h>
2462 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2463# else
79072805 2464 ABORT(); /* for use with undump */
aa689395 2465# endif
a5f75d66 2466#endif
79072805
LW		 2467}
2468
cb68f92d
GS		 2469/* initialize curinterp */
2470STATIC void
cea2e8a9 2471S_init_interp(pTHX)
cb68f92d
GS		 2472{
2473
066ef5b5 2474#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2475#define I_REINIT \
6b88bc9c
GS		 2476 STMT_START { \
2477 PL_chopset = " \n-"; \
2478 PL_copline = NOLINE; \
2479 PL_curcop = &PL_compiling;\
2480 PL_curcopdb = NULL; \
2481 PL_dbargs = 0; \
3967c732 2482 PL_dumpindent = 4; \
6b88bc9c
GS		 2483 PL_laststatval = -1; \
2484 PL_laststype = OP_STAT; \
2485 PL_maxscream = -1; \
2486 PL_maxsysfd = MAXSYSFD; \
2487 PL_statname = Nullsv; \
2488 PL_tmps_floor = -1; \
2489 PL_tmps_ix = -1; \
2490 PL_op_mask = NULL; \
6b88bc9c
GS		 2491 PL_laststatval = -1; \
2492 PL_laststype = OP_STAT; \
2493 PL_mess_sv = Nullsv; \
2494 PL_splitstr = " "; \
2495 PL_generation = 100; \
2496 PL_exitlist = NULL; \
2497 PL_exitlistlen = 0; \
2498 PL_regindent = 0; \
2499 PL_in_clean_objs = FALSE; \
2500 PL_in_clean_all = FALSE; \
2501 PL_profiledata = NULL; \
2502 PL_rsfp = Nullfp; \
2503 PL_rsfp_filters = Nullav; \
24d3c518 2504 PL_dirty = FALSE; \
cb68f92d 2505 } STMT_END
9666903d 2506 I_REINIT;
066ef5b5
GS		 2507#else
2508# ifdef MULTIPLICITY
2509# define PERLVAR(var,type)
51371543 2510# define PERLVARA(var,n,type)
cea2e8a9 2511# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2512# if defined(USE_THREADS)
2513# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2514# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2515# else /* !USE_THREADS */
2516# define PERLVARI(var,type,init) aTHX->var = init;
2517# define PERLVARIC(var,type,init) aTHX->var = init;
2518# endif /* USE_THREADS */
cea2e8a9 2519# else
c5be433b
GS		 2520# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2521# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2522# endif
066ef5b5
GS		 2523# include "intrpvar.h"
2524# ifndef USE_THREADS
2525# include "thrdvar.h"
2526# endif
2527# undef PERLVAR
51371543 2528# undef PERLVARA
066ef5b5
GS		 2529# undef PERLVARI
2530# undef PERLVARIC
3967c732 2531# else
066ef5b5 2532# define PERLVAR(var,type)
51371543 2533# define PERLVARA(var,n,type)
533c011a
NIS		 2534# define PERLVARI(var,type,init) PL_##var = init;
2535# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2536# include "intrpvar.h"
2537# ifndef USE_THREADS
2538# include "thrdvar.h"
2539# endif
2540# undef PERLVAR
51371543 2541# undef PERLVARA
066ef5b5
GS		 2542# undef PERLVARI
2543# undef PERLVARIC
2544# endif
cb68f92d
GS		 2545#endif
2546
cb68f92d
GS		 2547}
2548
76e3520e 2549STATIC void
cea2e8a9 2550S_init_main_stash(pTHX)
79072805 2551{
463ee0b2 2552 GV *gv;
6e72f9df 2553
2554 /* Note that strtab is a rather special HV. Assumptions are made
2555 about not iterating on it, and not adding tie magic to it.
2556 It is properly deallocated in perl_destruct() */
3280af22 2557 PL_strtab = newHV();
5f08fbcd
GS		 2558#ifdef USE_THREADS
2559 MUTEX_INIT(&PL_strtab_mutex);
2560#endif
3280af22
NIS		 2561 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2562 hv_ksplit(PL_strtab, 512);
ac27b0f5 2563
3280af22 2564 PL_curstash = PL_defstash = newHV();
79cb57f6 2565 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2566 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2567 SvREFCNT_dec(GvHV(gv));
3280af22 2568 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2569 SvREADONLY_on(gv);
3280af22
NIS		 2570 HvNAME(PL_defstash) = savepv("main");
2571 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2572 GvMULTI_on(PL_incgv);
2573 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2574 GvMULTI_on(PL_hintgv);
2575 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2576 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2577 GvMULTI_on(PL_errgv);
2578 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2579 GvMULTI_on(PL_replgv);
cea2e8a9 2580 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2581 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2582 sv_setpvn(ERRSV, "", 0);
3280af22 2583 PL_curstash = PL_defstash;
11faa288 2584 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2585 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2586 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2587 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2588 /* We must init $/ before switches are processed. */
864dbfa3 2589 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2590}
2591
76e3520e 2592STATIC void
cea2e8a9 2593S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2594{
6c4ab083 2595 *fdscript = -1;
79072805 2596
3280af22
NIS		 2597 if (PL_e_script) {
2598 PL_origfilename = savepv("-e");
96436eeb 2599 }
6c4ab083
GS		 2600 else {
2601 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2602 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2603
2604 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2605 char *s = scriptname + 8;
2606 *fdscript = atoi(s);
2607 while (isDIGIT(*s))
2608 s++;
2609 if (*s) {
2610 scriptname = savepv(s + 1);
3280af22
NIS		 2611 Safefree(PL_origfilename);
2612 PL_origfilename = scriptname;
6c4ab083
GS		 2613 }
2614 }
2615 }
2616
f4dd75d9
GS		 2617#ifdef USE_ITHREADS
2618 Safefree(CopFILE(PL_curcop));
2619#else
2620 SvREFCNT_dec(CopFILEGV(PL_curcop));
2621#endif
57843af0 2622 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2623 if (strEQ(PL_origfilename,"-"))
79072805 2624 scriptname = "";
01f988be 2625 if (*fdscript >= 0) {
3280af22 2626 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2627#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2628 if (PL_rsfp)
2629 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2630#endif
2631 }
3280af22 2632 else if (PL_preprocess) {
46fc3d4c 2633 char *cpp_cfg = CPPSTDIN;
79cb57f6 2634 SV *cpp = newSVpvn("",0);
46fc3d4c 2635 SV *cmd = NEWSV(0,0);
2636
2637 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2638 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2639 sv_catpv(cpp, cpp_cfg);
79072805 2640
0df16ed7 2641 sv_catpvn(sv, "-I", 2);
fed7345c 2642 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2643
14953ddc
MB		 2644 DEBUG_P(PerlIO_printf(Perl_debug_log,
2645 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2646 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2647#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2648 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2649sed %s -e \"/^[^#]/b\" \
2650 -e \"/^#[ ]*include[ ]/b\" \
2651 -e \"/^#[ ]*define[ ]/b\" \
2652 -e \"/^#[ ]*if[ ]/b\" \
2653 -e \"/^#[ ]*ifdef[ ]/b\" \
2654 -e \"/^#[ ]*ifndef[ ]/b\" \
2655 -e \"/^#[ ]*else/b\" \
2656 -e \"/^#[ ]*elif[ ]/b\" \
2657 -e \"/^#[ ]*undef[ ]/b\" \
2658 -e \"/^#[ ]*endif/b\" \
2659 -e \"s/^#.*//\" \
894356b3 2660 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2661 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2662#else
092bebab 2663# ifdef __OPEN_VM
cea2e8a9 2664 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2665%s %s -e '/^[^#]/b' \
2666 -e '/^#[ ]*include[ ]/b' \
2667 -e '/^#[ ]*define[ ]/b' \
2668 -e '/^#[ ]*if[ ]/b' \
2669 -e '/^#[ ]*ifdef[ ]/b' \
2670 -e '/^#[ ]*ifndef[ ]/b' \
2671 -e '/^#[ ]*else/b' \
2672 -e '/^#[ ]*elif[ ]/b' \
2673 -e '/^#[ ]*undef[ ]/b' \
2674 -e '/^#[ ]*endif/b' \
2675 -e 's/^[ ]*#.*//' \
894356b3 2676 %s | %"SVf" %"SVf" %s",
092bebab 2677# else
cea2e8a9 2678 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2679%s %s -e '/^[^#]/b' \
2680 -e '/^#[ ]*include[ ]/b' \
2681 -e '/^#[ ]*define[ ]/b' \
2682 -e '/^#[ ]*if[ ]/b' \
2683 -e '/^#[ ]*ifdef[ ]/b' \
2684 -e '/^#[ ]*ifndef[ ]/b' \
2685 -e '/^#[ ]*else/b' \
2686 -e '/^#[ ]*elif[ ]/b' \
2687 -e '/^#[ ]*undef[ ]/b' \
2688 -e '/^#[ ]*endif/b' \
2689 -e 's/^[ ]*#.*//' \
894356b3 2690 %s | %"SVf" -C %"SVf" %s",
092bebab 2691# endif
79072805
LW		 2692#ifdef LOC_SED
2693 LOC_SED,
2694#else
2695 "sed",
2696#endif
3280af22 2697 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2698#endif
46fc3d4c 2699 scriptname, cpp, sv, CPPMINUS);
3280af22 2700 PL_doextract = FALSE;
79072805 2701#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2702 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2703#ifdef HAS_SETEUID
b28d0864 2704 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2705#else
2706#ifdef HAS_SETREUID
b28d0864 2707 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2708#else
2709#ifdef HAS_SETRESUID
b28d0864 2710 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2711#else
b28d0864 2712 PerlProc_setuid(PL_uid);
79072805
LW		 2713#endif
2714#endif
85e6fe83 2715#endif
b28d0864 2716 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2717 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2718 }
2719#endif /* IAMSUID */
3280af22 2720 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2721 SvREFCNT_dec(cmd);
2722 SvREFCNT_dec(cpp);
79072805
LW		 2723 }
2724 else if (!*scriptname) {
bbce6d69 2725 forbid_setid("program input from stdin");
3280af22 2726 PL_rsfp = PerlIO_stdin();
79072805 2727 }
96436eeb 2728 else {
3280af22 2729 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2730#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2731 if (PL_rsfp)
2732 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2733#endif
2734 }
3280af22 2735 if (!PL_rsfp) {
13281fa4 2736#ifdef DOSUID
a687059c 2737#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2738 if (PL_euid &&
cc49e20b 2739 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2740 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2741 {
46fc3d4c 2742 /* try again */
a7cb1f99 2743 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2744 (int)PERL_REVISION, (int)PERL_VERSION,
2745 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2746 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2747 }
2748#endif
2749#endif
584d69ec
JH		 2750#ifdef IAMSUID
2751 errno = EPERM;
2752 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2753 Strerror(errno));
2754#else
cea2e8a9 2755 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2756 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2757#endif
13281fa4 2758 }
79072805 2759}
8d063cd8 2760
7b89560d
JH		 2761/* Mention
2762 * I_SYSSTATVFS HAS_FSTATVFS
2763 * I_SYSMOUNT
c890dc6c 2764 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2765 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2766 * here so that metaconfig picks them up. */
2767
104d25b7 2768#ifdef IAMSUID
864dbfa3 2769STATIC int
e688b231 2770S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2771{
0545a864
JH		 2772 int check_okay = 0; /* able to do all the required sys/libcalls */
2773 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2774/*
ad27e871 2775 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2776 * fstatvfs() is UNIX98.
0545a864 2777 * fstatfs() is 4.3 BSD.
ad27e871 2778 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2779 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2780 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2781 */
2782
6439433f
JH		 2783#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2784
2785# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2786 defined(HAS_FSTATVFS)
2787# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2788 struct statvfs stfs;
6439433f 2789
104d25b7
JH		 2790 check_okay = fstatvfs(fd, &stfs) == 0;
2791 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2792# endif /* fstatvfs */
ac27b0f5 2793
6439433f
JH		 2794# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2795 defined(PERL_MOUNT_NOSUID) && \
2796 defined(HAS_FSTATFS) && \
2797 defined(HAS_STRUCT_STATFS) && \
2798 defined(HAS_STRUCT_STATFS_F_FLAGS)
2799# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2800 struct statfs stfs;
6439433f 2801
104d25b7 2802 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2803 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2804# endif /* fstatfs */
2805
2806# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2807 defined(PERL_MOUNT_NOSUID) && \
2808 defined(HAS_FSTAT) && \
2809 defined(HAS_USTAT) && \
2810 defined(HAS_GETMNT) && \
2811 defined(HAS_STRUCT_FS_DATA) && \
2812 defined(NOSTAT_ONE)
2813# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2814 struct stat fdst;
6439433f 2815
0545a864 2816 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2817 struct ustat us;
2818 if (ustat(fdst.st_dev, &us) == 0) {
2819 struct fs_data fsd;
2820 /* NOSTAT_ONE here because we're not examining fields which
2821 * vary between that case and STAT_ONE. */
ad27e871 2822 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2823 size_t cmplen = sizeof(us.f_fname);
2824 if (sizeof(fsd.fd_req.path) < cmplen)
2825 cmplen = sizeof(fsd.fd_req.path);
2826 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2827 fdst.st_dev == fsd.fd_req.dev) {
2828 check_okay = 1;
2829 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2830 }
2831 }
2832 }
2833 }
0545a864 2834 }
6439433f
JH		 2835# endif /* fstat+ustat+getmnt */
2836
2837# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2838 defined(HAS_GETMNTENT) && \
2839 defined(HAS_HASMNTOPT) && \
2840 defined(MNTOPT_NOSUID)
2841# define FD_ON_NOSUID_CHECK_OKAY
2842 FILE *mtab = fopen("/etc/mtab", "r");
2843 struct mntent *entry;
2844 struct stat stb, fsb;
104d25b7
JH		 2845
2846 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2847 while (entry = getmntent(mtab)) {
2848 if (stat(entry->mnt_dir, &fsb) == 0
2849 && fsb.st_dev == stb.st_dev)
2850 {
2851 /* found the filesystem */
2852 check_okay = 1;
2853 if (hasmntopt(entry, MNTOPT_NOSUID))
2854 on_nosuid = 1;
2855 break;
2856 } /* A single fs may well fail its stat(). */
2857 }
104d25b7
JH		 2858 }
2859 if (mtab)
6439433f
JH		 2860 fclose(mtab);
2861# endif /* getmntent+hasmntopt */
0545a864 2862
ac27b0f5 2863 if (!check_okay)
0545a864 2864 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2865 return on_nosuid;
2866}
2867#endif /* IAMSUID */
2868
76e3520e 2869STATIC void
cea2e8a9 2870S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2871{
155aba94 2872#ifdef IAMSUID
96436eeb 2873 int which;
155aba94 2874#endif
96436eeb 2875
13281fa4
LW		 2876 /* do we need to emulate setuid on scripts? */
2877
2878 /* This code is for those BSD systems that have setuid #! scripts disabled
2879 * in the kernel because of a security problem. Merely defining DOSUID
2880 * in perl will not fix that problem, but if you have disabled setuid
2881 * scripts in the kernel, this will attempt to emulate setuid and setgid
2882 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2883 * root version must be called suidperl or sperlN.NNN. If regular perl
2884 * discovers that it has opened a setuid script, it calls suidperl with
2885 * the same argv that it had. If suidperl finds that the script it has
2886 * just opened is NOT setuid root, it sets the effective uid back to the
2887 * uid. We don't just make perl setuid root because that loses the
2888 * effective uid we had before invoking perl, if it was different from the
2889 * uid.
13281fa4
LW		 2890 *
2891 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2892 * be defined in suidperl only. suidperl must be setuid root. The
2893 * Configure script will set this up for you if you want it.
2894 */
a687059c 2895
13281fa4 2896#ifdef DOSUID
6e72f9df 2897 char *s, *s2;
a0d0e21e 2898
b28d0864 2899 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2900 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2901 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2902 I32 len;
2d8e6c8d 2903 STRLEN n_a;
13281fa4 2904
a687059c 2905#ifdef IAMSUID
fe14fcc3 2906#ifndef HAS_SETREUID
a687059c
LW		 2907 /* On this access check to make sure the directories are readable,
2908 * there is actually a small window that the user could use to make
2909 * filename point to an accessible directory. So there is a faint
2910 * chance that someone could execute a setuid script down in a
2911 * non-accessible directory. I don't know what to do about that.
2912 * But I don't think it's too important. The manual lies when
2913 * it says access() is useful in setuid programs.
2914 */
cc49e20b 2915 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2916 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2917#else
2918 /* If we can swap euid and uid, then we can determine access rights
2919 * with a simple stat of the file, and then compare device and
2920 * inode to make sure we did stat() on the same file we opened.
2921 * Then we just have to make sure he or she can execute it.
2922 */
2923 {
2924 struct stat tmpstatbuf;
2925
85e6fe83
LW		 2926 if (
2927#ifdef HAS_SETREUID
b28d0864 2928 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2929#else
2930# if HAS_SETRESUID
b28d0864 2931 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2932# endif
85e6fe83 2933#endif
b28d0864 2934 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2935 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2936 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2937 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2938#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2939 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2940 Perl_croak(aTHX_ "Permission denied");
104d25b7 2941#endif
b28d0864
NIS		 2942 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2943 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2944 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2945 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2946 }
85e6fe83
LW		 2947 if (
2948#ifdef HAS_SETREUID
b28d0864 2949 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2950#else
2951# if defined(HAS_SETRESUID)
b28d0864 2952 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2953# endif
85e6fe83 2954#endif
b28d0864 2955 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2956 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2957 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2958 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2959 }
fe14fcc3 2960#endif /* HAS_SETREUID */
a687059c
LW		 2961#endif /* IAMSUID */
2962
b28d0864 2963 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2964 Perl_croak(aTHX_ "Permission denied");
b28d0864 2965 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2966 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2967 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2968 CopLINE_inc(PL_curcop);
6b88bc9c 2969 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2970 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2971 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2972 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2973 if (*s == ' ') s++;
45d8adaa 2974 while (!isSPACE(*s)) s++;
2d8e6c8d 2975 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2976 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2977 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2978 Perl_croak(aTHX_ "Not a perl script");
a687059c 2979 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2980 /*
2981 * #! arg must be what we saw above. They can invoke it by
2982 * mentioning suidperl explicitly, but they may not add any strange
2983 * arguments beyond what #! says if they do invoke suidperl that way.
2984 */
2985 len = strlen(validarg);
2986 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2987 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2988 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2989
2990#ifndef IAMSUID
b28d0864
NIS		 2991 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2992 PL_euid == PL_statbuf.st_uid)
2993 if (!PL_do_undump)
cea2e8a9 2994 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2995FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2996#endif /* IAMSUID */
13281fa4 2997
b28d0864
NIS		 2998 if (PL_euid) { /* oops, we're not the setuid root perl */
2999 (void)PerlIO_close(PL_rsfp);
13281fa4 3000#ifndef IAMSUID
46fc3d4c 3001 /* try again */
a7cb1f99 3002 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3003 (int)PERL_REVISION, (int)PERL_VERSION,
3004 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3005#endif
cea2e8a9 3006 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3007 }
3008
b28d0864 3009 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3010#ifdef HAS_SETEGID
b28d0864 3011 (void)setegid(PL_statbuf.st_gid);
a687059c 3012#else
fe14fcc3 3013#ifdef HAS_SETREGID
b28d0864 3014 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3015#else
3016#ifdef HAS_SETRESGID
b28d0864 3017 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3018#else
b28d0864 3019 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3020#endif
3021#endif
85e6fe83 3022#endif
b28d0864 3023 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3024 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3025 }
b28d0864
NIS		 3026 if (PL_statbuf.st_mode & S_ISUID) {
3027 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3028#ifdef HAS_SETEUID
b28d0864 3029 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3030#else
fe14fcc3 3031#ifdef HAS_SETREUID
b28d0864 3032 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3033#else
3034#ifdef HAS_SETRESUID
b28d0864 3035 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3036#else
b28d0864 3037 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3038#endif
3039#endif
85e6fe83 3040#endif
b28d0864 3041 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3042 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3043 }
b28d0864 3044 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3045#ifdef HAS_SETEUID
b28d0864 3046 (void)seteuid((Uid_t)PL_uid);
a687059c 3047#else
fe14fcc3 3048#ifdef HAS_SETREUID
b28d0864 3049 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3050#else
85e6fe83 3051#ifdef HAS_SETRESUID
b28d0864 3052 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3053#else
b28d0864 3054 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3055#endif
a687059c
LW		 3056#endif
3057#endif
b28d0864 3058 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3059 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3060 }
748a9306 3061 init_ids();
b28d0864 3062 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3063 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3064 }
3065#ifdef IAMSUID
6b88bc9c 3066 else if (PL_preprocess)
cea2e8a9 3067 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3068 else if (fdscript >= 0)
cea2e8a9 3069 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3070 else
cea2e8a9 3071 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3072
3073 /* We absolutely must clear out any saved ids here, so we */
3074 /* exec the real perl, substituting fd script for scriptname. */
3075 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3076 PerlIO_rewind(PL_rsfp);
3077 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3078 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3079 if (!PL_origargv[which])
cea2e8a9
GS		 3080 Perl_croak(aTHX_ "Permission denied");
3081 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3082 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3083#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3084 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3085#endif
a7cb1f99 3086 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3087 (int)PERL_REVISION, (int)PERL_VERSION,
3088 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3089 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3090#endif /* IAMSUID */
a687059c 3091#else /* !DOSUID */
3280af22 3092 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3093#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3094 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3095 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3096 ||
b28d0864 3097 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3098 )
b28d0864 3099 if (!PL_do_undump)
cea2e8a9 3100 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3101FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3102#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3103 /* not set-id, must be wrapped */
a687059c 3104 }
13281fa4 3105#endif /* DOSUID */
79072805 3106}
13281fa4 3107
76e3520e 3108STATIC void
cea2e8a9 3109S_find_beginning(pTHX)
79072805 3110{
6e72f9df 3111 register char *s, *s2;
33b78306
LW		 3112
3113 /* skip forward in input to the real script? */
3114
bbce6d69 3115 forbid_setid("-x");
bf4acbe4 3116#ifdef MACOS_TRADITIONAL
084592ab 3117 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3118
bf4acbe4
GS		 3119 while (PL_doextract || gMacPerl_AlwaysExtract) {
3120 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3121 if (!gMacPerl_AlwaysExtract)
3122 Perl_croak(aTHX_ "No Perl script found in input\n");
3123
3124 if (PL_doextract) /* require explicit override ? */
3125 if (!OverrideExtract(PL_origfilename))
3126 Perl_croak(aTHX_ "User aborted script\n");
3127 else
3128 PL_doextract = FALSE;
3129
3130 /* Pater peccavi, file does not have #! */
3131 PerlIO_rewind(PL_rsfp);
ac27b0f5 3132
bf4acbe4
GS		 3133 break;
3134 }
3135#else
3280af22
NIS		 3136 while (PL_doextract) {
3137 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3138 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3139#endif
6e72f9df 3140 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3141 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3142 PL_doextract = FALSE;
6e72f9df 3143 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3144 s2 = s;
3145 while (*s == ' ' || *s == '\t') s++;
3146 if (*s++ == '-') {
3147 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3148 if (strnEQ(s2-4,"perl",4))
3149 /*SUPPRESS 530*/
155aba94
GS		 3150 while ((s = moreswitches(s)))
3151 ;
33b78306 3152 }
95e8664e
CN		 3153#ifdef MACOS_TRADITIONAL
3154 break;
3155#endif
83025b21
LW		 3156 }
3157 }
3158}
3159
afe37c7d 3160
76e3520e 3161STATIC void
cea2e8a9 3162S_init_ids(pTHX)
352d5a3a 3163{
d8eceb89
JH		 3164 PL_uid = PerlProc_getuid();
3165 PL_euid = PerlProc_geteuid();
3166 PL_gid = PerlProc_getgid();
3167 PL_egid = PerlProc_getegid();
748a9306 3168#ifdef VMS
b28d0864
NIS		 3169 PL_uid |= PL_gid << 16;
3170 PL_euid |= PL_egid << 16;
748a9306 3171#endif
3280af22 3172 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3173}
79072805 3174
76e3520e 3175STATIC void
cea2e8a9 3176S_forbid_setid(pTHX_ char *s)
bbce6d69 3177{
3280af22 3178 if (PL_euid != PL_uid)
cea2e8a9 3179 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3180 if (PL_egid != PL_gid)
cea2e8a9 3181 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3182}
3183
1ee4443e
IZ		 3184void
3185Perl_init_debugger(pTHX)
748a9306 3186{
1ee4443e
IZ		 3187 HV *ostash = PL_curstash;
3188
3280af22
NIS		 3189 PL_curstash = PL_debstash;
3190 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3191 AvREAL_off(PL_dbargs);
3192 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3193 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3194 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3195 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3196 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3197 sv_setiv(PL_DBsingle, 0);
3280af22 3198 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3199 sv_setiv(PL_DBtrace, 0);
3280af22 3200 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3201 sv_setiv(PL_DBsignal, 0);
1ee4443e 3202 PL_curstash = ostash;
352d5a3a
LW		 3203}
3204
2ce36478
SM		 3205#ifndef STRESS_REALLOC
3206#define REASONABLE(size) (size)
3207#else
3208#define REASONABLE(size) (1) /* unreasonable */
3209#endif
3210
11343788 3211void
cea2e8a9 3212Perl_init_stacks(pTHX)
79072805 3213{
e336de0d 3214 /* start with 128-item stack and 8K cxstack */
3280af22 3215 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3216 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3217 PL_curstackinfo->si_type = PERLSI_MAIN;
3218 PL_curstack = PL_curstackinfo->si_stack;
3219 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3220
3280af22
NIS		 3221 PL_stack_base = AvARRAY(PL_curstack);
3222 PL_stack_sp = PL_stack_base;
3223 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3224
3280af22
NIS		 3225 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3226 PL_tmps_floor = -1;
3227 PL_tmps_ix = -1;
3228 PL_tmps_max = REASONABLE(128);
8990e307 3229
3280af22
NIS		 3230 New(54,PL_markstack,REASONABLE(32),I32);
3231 PL_markstack_ptr = PL_markstack;
3232 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3233
ce2f7c3b 3234 SET_MARK_OFFSET;
e336de0d 3235
3280af22
NIS		 3236 New(54,PL_scopestack,REASONABLE(32),I32);
3237 PL_scopestack_ix = 0;
3238 PL_scopestack_max = REASONABLE(32);
79072805 3239
3280af22
NIS		 3240 New(54,PL_savestack,REASONABLE(128),ANY);
3241 PL_savestack_ix = 0;
3242 PL_savestack_max = REASONABLE(128);
79072805 3243
3280af22
NIS		 3244 New(54,PL_retstack,REASONABLE(16),OP*);
3245 PL_retstack_ix = 0;
3246 PL_retstack_max = REASONABLE(16);
378cc40b 3247}
33b78306 3248
2ce36478
SM		 3249#undef REASONABLE
3250
76e3520e 3251STATIC void
cea2e8a9 3252S_nuke_stacks(pTHX)
6e72f9df 3253{
3280af22
NIS		 3254 while (PL_curstackinfo->si_next)
3255 PL_curstackinfo = PL_curstackinfo->si_next;
3256 while (PL_curstackinfo) {
3257 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3258 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3259 Safefree(PL_curstackinfo->si_cxstack);
3260 Safefree(PL_curstackinfo);
3261 PL_curstackinfo = p;
e336de0d 3262 }
3280af22
NIS		 3263 Safefree(PL_tmps_stack);
3264 Safefree(PL_markstack);
3265 Safefree(PL_scopestack);
3266 Safefree(PL_savestack);
3267 Safefree(PL_retstack);
378cc40b 3268}
33b78306 3269
76e3520e 3270#ifndef PERL_OBJECT
760ac839 3271static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3272#endif
7aa04957 3273
76e3520e 3274STATIC void
cea2e8a9 3275S_init_lexer(pTHX)
8990e307 3276{
76e3520e
GS		 3277#ifdef PERL_OBJECT
3278 PerlIO *tmpfp;
3279#endif
3280af22
NIS		 3280 tmpfp = PL_rsfp;
3281 PL_rsfp = Nullfp;
3282 lex_start(PL_linestr);
3283 PL_rsfp = tmpfp;
79cb57f6 3284 PL_subname = newSVpvn("main",4);
8990e307
LW		 3285}
3286
76e3520e 3287STATIC void
cea2e8a9 3288S_init_predump_symbols(pTHX)
45d8adaa 3289{
93a17b20 3290 GV *tmpgv;
af8c498a 3291 IO *io;
79072805 3292
864dbfa3 3293 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3294 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3295 GvMULTI_on(PL_stdingv);
af8c498a 3296 io = GvIOp(PL_stdingv);
a04651f4 3297 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3298 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3299 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3300 GvMULTI_on(tmpgv);
af8c498a 3301 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3302
85e6fe83 3303 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3304 GvMULTI_on(tmpgv);
af8c498a 3305 io = GvIOp(tmpgv);
a04651f4 3306 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3307 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3308 setdefout(tmpgv);
adbc6bb1 3309 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3310 GvMULTI_on(tmpgv);
af8c498a 3311 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3312
bf49b057
GS		 3313 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3314 GvMULTI_on(PL_stderrgv);
3315 io = GvIOp(PL_stderrgv);
a04651f4 3316 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3317 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3318 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3319 GvMULTI_on(tmpgv);
af8c498a 3320 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3321
3280af22 3322 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3323
bf4acbe4
GS		 3324 if (PL_osname)
3325 Safefree(PL_osname);
3326 PL_osname = savepv(OSNAME);
79072805 3327}
33b78306 3328
76e3520e 3329STATIC void
cea2e8a9 3330S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3331{
79072805
LW		 3332 char *s;
3333 SV *sv;
3334 GV* tmpgv;
9cbac4c7 3335#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3336 char **dup_env_base = 0;
103a7189 3337 int dup_env_count = 0;
9cbac4c7 3338#endif
fe14fcc3 3339
79072805 3340 argc--,argv++; /* skip name of script */
3280af22 3341 if (PL_doswitches) {
79072805
LW		 3342 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3343 if (!argv[0][1])
3344 break;
379d538a 3345 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3346 argc--,argv++;
3347 break;
3348 }
155aba94 3349 if ((s = strchr(argv[0], '='))) {
79072805 3350 *s++ = '\0';
85e6fe83 3351 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3352 }
3353 else
85e6fe83 3354 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3355 }
79072805 3356 }
3280af22
NIS		 3357 PL_toptarget = NEWSV(0,0);
3358 sv_upgrade(PL_toptarget, SVt_PVFM);
3359 sv_setpvn(PL_toptarget, "", 0);
3360 PL_bodytarget = NEWSV(0,0);
3361 sv_upgrade(PL_bodytarget, SVt_PVFM);
3362 sv_setpvn(PL_bodytarget, "", 0);
3363 PL_formtarget = PL_bodytarget;
79072805 3364
bbce6d69 3365 TAINT;
155aba94 3366 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3367#ifdef MACOS_TRADITIONAL
3368 /* $0 is not majick on a Mac */
3369 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3370#else
3280af22 3371 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3372 magicname("0", "0", 1);
bf4acbe4 3373#endif
79072805 3374 }
155aba94 3375 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3376#ifdef OS2
23da6c43 3377 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3378#else
3280af22 3379 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3380#endif
155aba94 3381 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3382 GvMULTI_on(PL_argvgv);
3383 (void)gv_AVadd(PL_argvgv);
3384 av_clear(GvAVn(PL_argvgv));
79072805 3385 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3386 SV *sv = newSVpv(argv[0],0);
3387 av_push(GvAVn(PL_argvgv),sv);
3388 if (PL_widesyscalls)
e84ff256 3389 (void)sv_utf8_decode(sv);
79072805
LW		 3390 }
3391 }
155aba94 3392 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3393 HV *hv;
3280af22
NIS		 3394 GvMULTI_on(PL_envgv);
3395 hv = GvHVn(PL_envgv);
14befaf4 3396 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3397#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3398 /* Note that if the supplied env parameter is actually a copy
3399 of the global environ then it may now point to free'd memory
3400 if the environment has been modified since. To avoid this
3401 problem we treat env==NULL as meaning 'use the default'
3402 */
3403 if (!env)
3404 env = environ;
5aabfad6 3405 if (env != environ)
79072805 3406 environ[0] = Nullch;
103a7189
JH		 3407#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3408 {
3409 char **env_base;
9041c2e3 3410 for (env_base = env; *env; env++)
103a7189
JH		 3411 dup_env_count++;
3412 if ((dup_env_base = (char **)
480bfd1e 3413 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3414 char **dup_env;
3415 for (env = env_base, dup_env = dup_env_base;
3416 *env;
480bfd1e
JH		 3417 env++, dup_env++) {
3418 /* With environ one needs to use safesysmalloc(). */
3419 *dup_env = safesysmalloc(strlen(*env) + 1);
3420 (void)strcpy(*dup_env, *env);
3421 }
103a7189
JH		 3422 *dup_env = Nullch;
3423 env = dup_env_base;
3424 } /* else what? */
3425 }
3426#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3427 for (; *env; env++) {
93a17b20 3428 if (!(s = strchr(*env,'=')))
79072805
LW		 3429 continue;
3430 *s++ = '\0';
60ce6247 3431#if defined(MSDOS)
137443ea 3432 (void)strupr(*env);
3433#endif
79072805
LW		 3434 sv = newSVpv(s--,0);
3435 (void)hv_store(hv, *env, s - *env, sv, 0);
3436 *s = '=';
fe14fcc3 3437 }
480bfd1e 3438#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3439 if (dup_env_base) {
3440 char **dup_env;
3441 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3442 safesysfree(*dup_env);
3443 safesysfree(dup_env_base);
103a7189 3444 }
7e0f6a1f 3445#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3446#endif /* USE_ENVIRON_ARRAY */
4550b24a 3447#ifdef DYNAMIC_ENV_FETCH
3448 HvNAME(hv) = savepv(ENV_HV_NAME);
3449#endif
79072805 3450 }
bbce6d69 3451 TAINT_NOT;
155aba94 3452 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3453 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3454}
34de22dd 3455
76e3520e 3456STATIC void
cea2e8a9 3457S_init_perllib(pTHX)
34de22dd 3458{
85e6fe83 3459 char *s;
3280af22 3460 if (!PL_tainting) {
552a7a9b 3461#ifndef VMS
76e3520e 3462 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3463 if (s)
9c8a64f0 3464 incpush(s, TRUE, TRUE);
85e6fe83 3465 else
9c8a64f0 3466 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3467#else /* VMS */
3468 /* Treat PERL5?LIB as a possible search list logical name -- the
3469 * "natural" VMS idiom for a Unix path string. We allow each
3470 * element to be a set of |-separated directories for compatibility.
3471 */
3472 char buf[256];
3473 int idx = 0;
3474 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3475 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3476 else
9c8a64f0 3477 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3478#endif /* VMS */
85e6fe83 3479 }
34de22dd 3480
c90c0ff4 3481/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3482 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3483*/
4633a7c4 3484#ifdef APPLLIB_EXP
9c8a64f0 3485 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3486#endif
4633a7c4 3487
fed7345c 3488#ifdef ARCHLIB_EXP
9c8a64f0 3489 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3490#endif
bf4acbe4
GS		 3491#ifdef MACOS_TRADITIONAL
3492 {
3493 struct stat tmpstatbuf;
3494 SV * privdir = NEWSV(55, 0);
3495 char * macperl = PerlEnv_getenv("MACPERL");
3496
3497 if (!macperl)
3498 macperl = "";
3499
3500 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3501 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3502 incpush(SvPVX(privdir), TRUE, FALSE);
3503 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3504 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3505 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3506
bf4acbe4
GS		 3507 SvREFCNT_dec(privdir);
3508 }
3509 if (!PL_tainting)
3510 incpush(":", FALSE, FALSE);
3511#else
fed7345c 3512#ifndef PRIVLIB_EXP
65f19062 3513# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3514#endif
ac27b0f5 3515#if defined(WIN32)
9c8a64f0 3516 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3517#else
9c8a64f0 3518 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3519#endif
4633a7c4 3520
65f19062 3521#ifdef SITEARCH_EXP
3b290362
GS		 3522 /* sitearch is always relative to sitelib on Windows for
3523 * DLL-based path intuition to work correctly */
3524# if !defined(WIN32)
9c8a64f0 3525 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3526# endif
3527#endif
3528
4633a7c4 3529#ifdef SITELIB_EXP
65f19062 3530# if defined(WIN32)
9c8a64f0 3531 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3532# else
9c8a64f0 3533 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3534# endif
3535#endif
189d1e8d 3536
65f19062 3537#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3538 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3539#endif
65f19062
GS		 3540
3541#ifdef PERL_VENDORARCH_EXP
4ea817c6 3542 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3543 * DLL-based path intuition to work correctly */
3544# if !defined(WIN32)
9c8a64f0 3545 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3546# endif
4b03c463 3547#endif
65f19062
GS		 3548
3549#ifdef PERL_VENDORLIB_EXP
3550# if defined(WIN32)
9c8a64f0 3551 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3552# else
9c8a64f0 3553 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3554# endif
a3635516 3555#endif
65f19062
GS		 3556
3557#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3558 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3559#endif
65f19062 3560
3b777bb4
GS		 3561#ifdef PERL_OTHERLIBDIRS
3562 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3563#endif
3564
3280af22 3565 if (!PL_tainting)
9c8a64f0 3566 incpush(".", FALSE, FALSE);
bf4acbe4 3567#endif /* MACOS_TRADITIONAL */
774d564b 3568}
3569
ed79a026 3570#if defined(DOSISH) || defined(EPOC)
774d564b 3571# define PERLLIB_SEP ';'
3572#else
3573# if defined(VMS)
3574# define PERLLIB_SEP '|'
3575# else
bf4acbe4
GS		 3576# if defined(MACOS_TRADITIONAL)
3577# define PERLLIB_SEP ','
3578# else
3579# define PERLLIB_SEP ':'
3580# endif
774d564b 3581# endif
3582#endif
3583#ifndef PERLLIB_MANGLE
3584# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3585#endif
774d564b 3586
76e3520e 3587STATIC void
9c8a64f0 3588S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3589{
3590 SV *subdir = Nullsv;
774d564b 3591
3b290362 3592 if (!p || !*p)
774d564b 3593 return;
3594
9c8a64f0 3595 if (addsubdirs || addoldvers) {
00db4c45 3596 subdir = sv_newmortal();
774d564b 3597 }
3598
3599 /* Break at all separators */
3600 while (p && *p) {
8c52afec 3601 SV *libdir = NEWSV(55,0);
774d564b 3602 char *s;
3603
3604 /* skip any consecutive separators */
3605 while ( *p == PERLLIB_SEP ) {
3606 /* Uncomment the next line for PATH semantics */
79cb57f6 3607 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3608 p++;
3609 }
3610
3611 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3612 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3613 (STRLEN)(s - p));
3614 p = s + 1;
3615 }
3616 else {
3617 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3618 p = Nullch; /* break out */
3619 }
bf4acbe4
GS		 3620#ifdef MACOS_TRADITIONAL
3621 if (!strchr(SvPVX(libdir), ':'))
3622 sv_insert(libdir, 0, 0, ":", 1);
3623 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3624 sv_catpv(libdir, ":");
3625#endif
774d564b 3626
3627 /*
3628 * BEFORE pushing libdir onto @INC we may first push version- and
3629 * archname-specific sub-directories.
3630 */
9c8a64f0 3631 if (addsubdirs || addoldvers) {
29d82f8d 3632#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3633 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3634 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3635 const char **incver;
3636#endif
774d564b 3637 struct stat tmpstatbuf;
aa689395 3638#ifdef VMS
3639 char *unix;
3640 STRLEN len;
774d564b 3641
2d8e6c8d 3642 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3643 len = strlen(unix);
3644 while (unix[len-1] == '/') len--; /* Cosmetic */
3645 sv_usepvn(libdir,unix,len);
3646 }
3647 else
bf49b057 3648 PerlIO_printf(Perl_error_log,
aa689395 3649 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3650 SvPV(libdir,len));
aa689395 3651#endif
9c8a64f0 3652 if (addsubdirs) {
bf4acbe4
GS		 3653#ifdef MACOS_TRADITIONAL
3654#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3655#define PERL_ARCH_FMT "%s:"
3656#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3657#else
3658#define PERL_AV_SUFFIX_FMT "/"
3659#define PERL_ARCH_FMT "/%s"
084592ab 3660#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3661#endif
9c8a64f0 3662 /* .../version/archname if -d .../version/archname */
084592ab 3663 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3664 libdir,
3665 (int)PERL_REVISION, (int)PERL_VERSION,
3666 (int)PERL_SUBVERSION, ARCHNAME);
3667 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3668 S_ISDIR(tmpstatbuf.st_mode))
3669 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3670
9c8a64f0 3671 /* .../version if -d .../version */
084592ab 3672 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3673 (int)PERL_REVISION, (int)PERL_VERSION,
3674 (int)PERL_SUBVERSION);
3675 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3676 S_ISDIR(tmpstatbuf.st_mode))
3677 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3678
3679 /* .../archname if -d .../archname */
bf4acbe4 3680 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3681 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3682 S_ISDIR(tmpstatbuf.st_mode))
3683 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3684 }
9c8a64f0 3685
9c8a64f0 3686#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3687 if (addoldvers) {
9c8a64f0
GS		 3688 for (incver = incverlist; *incver; incver++) {
3689 /* .../xxx if -d .../xxx */
bf4acbe4 3690 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3691 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3692 S_ISDIR(tmpstatbuf.st_mode))
3693 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3694 }
3695 }
29d82f8d 3696#endif
774d564b 3697 }
3698
3699 /* finally push this lib directory on the end of @INC */
3280af22 3700 av_push(GvAVn(PL_incgv), libdir);
774d564b 3701 }
34de22dd 3702}
93a17b20 3703
199100c8 3704#ifdef USE_THREADS
76e3520e 3705STATIC struct perl_thread *
cea2e8a9 3706S_init_main_thread(pTHX)
199100c8 3707{
c5be433b 3708#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3709 struct perl_thread *thr;
cea2e8a9 3710#endif
199100c8
MB		 3711 XPV *xpv;
3712
52e1cb5e 3713 Newz(53, thr, 1, struct perl_thread);
533c011a 3714 PL_curcop = &PL_compiling;
c5be433b 3715 thr->interp = PERL_GET_INTERP;
199100c8 3716 thr->cvcache = newHV();
54b9620d 3717 thr->threadsv = newAV();
940cb80d 3718 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3719 thr->specific = newAV();
3720 thr->flags = THRf_R_JOINABLE;
3721 MUTEX_INIT(&thr->mutex);
3722 /* Handcraft thrsv similarly to mess_sv */
533c011a 3723 New(53, PL_thrsv, 1, SV);
199100c8 3724 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3725 SvFLAGS(PL_thrsv) = SVt_PV;
3726 SvANY(PL_thrsv) = (void*)xpv;
3727 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3728 SvPVX(PL_thrsv) = (char*)thr;
3729 SvCUR_set(PL_thrsv, sizeof(thr));
3730 SvLEN_set(PL_thrsv, sizeof(thr));
3731 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3732 thr->oursv = PL_thrsv;
3733 PL_chopset = " \n-";
3967c732 3734 PL_dumpindent = 4;
533c011a
NIS		 3735
3736 MUTEX_LOCK(&PL_threads_mutex);
3737 PL_nthreads++;
199100c8
MB		 3738 thr->tid = 0;
3739 thr->next = thr;
3740 thr->prev = thr;
8dcd6f7b 3741 thr->thr_done = 0;
533c011a 3742 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3743
4b026b9e 3744#ifdef HAVE_THREAD_INTERN
4f63d024 3745 Perl_init_thread_intern(thr);
235db74f
GS		 3746#endif
3747
3748#ifdef SET_THREAD_SELF
3749 SET_THREAD_SELF(thr);
199100c8
MB		 3750#else
3751 thr->self = pthread_self();
235db74f 3752#endif /* SET_THREAD_SELF */
06d86050 3753 PERL_SET_THX(thr);
199100c8
MB		 3754
3755 /*
411caa50
JH		 3756 * These must come after the thread self setting
3757 * because sv_setpvn does SvTAINT and the taint
3758 * fields thread selfness being set.
199100c8 3759 */
533c011a
NIS		 3760 PL_toptarget = NEWSV(0,0);
3761 sv_upgrade(PL_toptarget, SVt_PVFM);
3762 sv_setpvn(PL_toptarget, "", 0);
3763 PL_bodytarget = NEWSV(0,0);
3764 sv_upgrade(PL_bodytarget, SVt_PVFM);
3765 sv_setpvn(PL_bodytarget, "", 0);
3766 PL_formtarget = PL_bodytarget;
79cb57f6 3767 thr->errsv = newSVpvn("", 0);
78857c3c 3768 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3769
533c011a 3770 PL_maxscream = -1;
0b94c7bb
GS		 3771 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3772 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3773 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3774 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3775 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3776 PL_regindent = 0;
3777 PL_reginterp_cnt = 0;
5c0ca799 3778
199100c8
MB		 3779 return thr;
3780}
3781#endif /* USE_THREADS */
3782
93a17b20 3783void
864dbfa3 3784Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3785{
971a9dd3 3786 SV *atsv;
57843af0 3787 line_t oldline = CopLINE(PL_curcop);
312caa8e 3788 CV *cv;
22921e25 3789 STRLEN len;
6224f72b 3790 int ret;
db36c5a1 3791 dJMPENV;
93a17b20 3792
76e3520e 3793 while (AvFILL(paramList) >= 0) {
312caa8e 3794 cv = (CV*)av_shift(paramList);
059a8bb7
JH		 3795 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3796 /* save PL_beginav for compiler */
3797 if (! PL_beginav_save)
3798 PL_beginav_save = newAV();
3799 av_push(PL_beginav_save, (SV*)cv);
3800 } else {
3801 SAVEFREESV(cv);
3802 }
14dd3ad8
GS		 3803#ifdef PERL_FLEXIBLE_EXCEPTIONS
3804 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3805#else
3806 JMPENV_PUSH(ret);
3807#endif
6224f72b 3808 switch (ret) {
312caa8e 3809 case 0:
14dd3ad8
GS		 3810#ifndef PERL_FLEXIBLE_EXCEPTIONS
3811 call_list_body(cv);
3812#endif
971a9dd3 3813 atsv = ERRSV;
312caa8e
CS		 3814 (void)SvPV(atsv, len);
3815 if (len) {
971a9dd3 3816 STRLEN n_a;
312caa8e 3817 PL_curcop = &PL_compiling;
57843af0 3818 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3819 if (paramList == PL_beginav)
3820 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3821 else
4f25aa18
GS		 3822 Perl_sv_catpvf(aTHX_ atsv,
3823 "%s failed--call queue aborted",
7d30b5c4 3824 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3825 : paramList == PL_initav ? "INIT"
3826 : "END");
312caa8e
CS		 3827 while (PL_scopestack_ix > oldscope)
3828 LEAVE;
14dd3ad8 3829 JMPENV_POP;
971a9dd3 3830 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3831 }
85e6fe83 3832 break;
6224f72b 3833 case 1:
f86702cc 3834 STATUS_ALL_FAILURE;
85e6fe83 3835 /* FALL THROUGH */
6224f72b 3836 case 2:
85e6fe83 3837 /* my_exit() was called */
3280af22 3838 while (PL_scopestack_ix > oldscope)
2ae324a7 3839 LEAVE;
84902520 3840 FREETMPS;
3280af22 3841 PL_curstash = PL_defstash;
3280af22 3842 PL_curcop = &PL_compiling;
57843af0 3843 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3844 JMPENV_POP;
cc3604b1 3845 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3846 if (paramList == PL_beginav)
cea2e8a9 3847 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3848 else
4f25aa18 3849 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3850 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3851 : paramList == PL_initav ? "INIT"
3852 : "END");
85e6fe83 3853 }
f86702cc 3854 my_exit_jump();
85e6fe83 3855 /* NOTREACHED */
6224f72b 3856 case 3:
312caa8e
CS		 3857 if (PL_restartop) {
3858 PL_curcop = &PL_compiling;
57843af0 3859 CopLINE_set(PL_curcop, oldline);
312caa8e 3860 JMPENV_JUMP(3);
85e6fe83 3861 }
bf49b057 3862 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3863 FREETMPS;
3864 break;
8990e307 3865 }
14dd3ad8 3866 JMPENV_POP;
93a17b20 3867 }
93a17b20 3868}
93a17b20 3869
14dd3ad8 3870#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3871STATIC void *
14dd3ad8 3872S_vcall_list_body(pTHX_ va_list args)
312caa8e 3873{
312caa8e 3874 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3875 return call_list_body(cv);
3876}
3877#endif
312caa8e 3878
14dd3ad8
GS		 3879STATIC void *
3880S_call_list_body(pTHX_ CV *cv)
3881{
312caa8e 3882 PUSHMARK(PL_stack_sp);
864dbfa3 3883 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3884 return NULL;
3885}
3886
f86702cc 3887void
864dbfa3 3888Perl_my_exit(pTHX_ U32 status)
f86702cc 3889{
8b73bbec 3890 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3891 thr, (unsigned long) status));
f86702cc 3892 switch (status) {
3893 case 0:
3894 STATUS_ALL_SUCCESS;
3895 break;
3896 case 1:
3897 STATUS_ALL_FAILURE;
3898 break;
3899 default:
3900 STATUS_NATIVE_SET(status);
3901 break;
3902 }
3903 my_exit_jump();
3904}
3905
3906void
864dbfa3 3907Perl_my_failure_exit(pTHX)
f86702cc 3908{
3909#ifdef VMS
3910 if (vaxc$errno & 1) {
4fdae800 3911 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3912 STATUS_NATIVE_SET(44);
f86702cc 3913 }
3914 else {
ff0cee69 3915 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3916 STATUS_NATIVE_SET(44);
f86702cc 3917 else
4fdae800 3918 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3919 }
3920#else
9b599b2a 3921 int exitstatus;
f86702cc 3922 if (errno & 255)
3923 STATUS_POSIX_SET(errno);
9b599b2a 3924 else {
ac27b0f5 3925 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3926 if (exitstatus & 255)
3927 STATUS_POSIX_SET(exitstatus);
3928 else
3929 STATUS_POSIX_SET(255);
3930 }
f86702cc 3931#endif
3932 my_exit_jump();
93a17b20
LW		 3933}
3934
76e3520e 3935STATIC void
cea2e8a9 3936S_my_exit_jump(pTHX)
f86702cc 3937{
c09156bb 3938 register PERL_CONTEXT *cx;
f86702cc 3939 I32 gimme;
3940 SV **newsp;
3941
3280af22
NIS		 3942 if (PL_e_script) {
3943 SvREFCNT_dec(PL_e_script);
3944 PL_e_script = Nullsv;
f86702cc 3945 }
3946
3280af22 3947 POPSTACK_TO(PL_mainstack);
f86702cc 3948 if (cxstack_ix >= 0) {
3949 if (cxstack_ix > 0)
3950 dounwind(0);
3280af22 3951 POPBLOCK(cx,PL_curpm);
f86702cc 3952 LEAVE;
3953 }
ff0cee69 3954
6224f72b 3955 JMPENV_JUMP(2);
f86702cc 3956}
873ef191 3957
7a5f8e82 3958#ifdef PERL_OBJECT
873ef191 3959#include "XSUB.h"
51371543 3960#endif
873ef191 3961
0cb96387
GS		 3962static I32
3963read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3964{
3965 char *p, *nl;
3280af22 3966 p = SvPVX(PL_e_script);
873ef191 3967 nl = strchr(p, '\n');
3280af22 3968 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3969 if (nl-p == 0) {
0cb96387 3970 filter_del(read_e_script);
873ef191 3971 return 0;
7dfe3f66 3972 }
873ef191 3973 sv_catpvn(buf_sv, p, nl-p);
3280af22 3974 sv_chop(PL_e_script, nl);
873ef191
GS		 3975 return 1;
3976}
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