This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
introduce illegal symbols into null package so that gv_fetchpv(...,TRUE)
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW
1/* perl.c
2 *
3818b22b 3 * Copyright (c) 1987-2000 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
PP
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
GS
159 init_interp();
160 PL_perl_destruct_level = 1;
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
GS
182 MUTEX_INIT(&PL_cred_mutex);
183
199100c8 184 thr = init_main_thread();
11343788
MB
185#endif /* USE_THREADS */
186
14dd3ad8 187#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 188 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 189#endif
312caa8e 190
2aea9f8a
GS
191 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
192
3280af22
NIS
193 PL_linestr = NEWSV(65,79);
194 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 195
3280af22 196 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
197 /* set read-only and try to insure than we wont see REFCNT==0
198 very often */
199
3280af22
NIS
200 SvREADONLY_on(&PL_sv_undef);
201 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 202
3280af22
NIS
203 sv_setpv(&PL_sv_no,PL_No);
204 SvNV(&PL_sv_no);
205 SvREADONLY_on(&PL_sv_no);
206 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 207
3280af22
NIS
208 sv_setpv(&PL_sv_yes,PL_Yes);
209 SvNV(&PL_sv_yes);
210 SvREADONLY_on(&PL_sv_yes);
211 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 212 }
79072805 213
76e3520e
GS
214#ifdef PERL_OBJECT
215 /* TODO: */
6b88bc9c 216 /* PL_sighandlerp = sighandler; */
76e3520e 217#else
cea2e8a9 218 PL_sighandlerp = Perl_sighandler;
76e3520e 219#endif
3280af22 220 PL_pidstatus = newHV();
44a8e56a 221
79072805
LW
222#ifdef MSDOS
223 /*
224 * There is no way we can refer to them from Perl so close them to save
225 * space. The other alternative would be to provide STDAUX and STDPRN
226 * filehandles.
227 */
228 (void)fclose(stdaux);
229 (void)fclose(stdprn);
230#endif
231 }
232
79cb57f6 233 PL_nrs = newSVpvn("\n", 1);
3280af22 234 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 235
cea2e8a9 236 init_stacks();
79072805 237
748a9306 238 init_ids();
3280af22 239 PL_lex_state = LEX_NOTPARSING;
a5f75d66 240
312caa8e 241 JMPENV_BOOTSTRAP;
f86702cc
PP
242 STATUS_ALL_SUCCESS;
243
0672f40e 244 init_i18nl10n(1);
36477c24 245 SET_NUMERIC_STANDARD();
0b5b802d 246
a7cb1f99
GS
247 {
248 U8 *s;
249 PL_patchlevel = NEWSV(0,4);
155aba94 250 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 251 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 252 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99
GS
253 s = (U8*)SvPVX(PL_patchlevel);
254 s = uv_to_utf8(s, (UV)PERL_REVISION);
255 s = uv_to_utf8(s, (UV)PERL_VERSION);
256 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
257 *s = '\0';
258 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
259 SvPOK_on(PL_patchlevel);
260 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
261 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 262#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 263 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 264#endif
a7cb1f99
GS
265 ;
266 SvNOK_on(PL_patchlevel); /* dual valued */
267 SvUTF8_on(PL_patchlevel);
268 SvREADONLY_on(PL_patchlevel);
269 }
79072805 270
ab821d7f 271#if defined(LOCAL_PATCH_COUNT)
3280af22 272 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
273#endif
274
4b556e6c 275 PerlIO_init(); /* Hook to IO system */
760ac839 276
3280af22
NIS
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
8990e307 279
8990e307 280 ENTER;
79072805
LW
281}
282
954c1994
GS
283/*
284=for apidoc perl_destruct
285
286Shuts down a Perl interpreter. See L<perlembed>.
287
288=cut
289*/
290
79072805 291void
0cb96387 292perl_destruct(pTHXx)
79072805 293{
11343788 294 dTHR;
748a9306 295 int destruct_level; /* 0=none, 1=full, 2=full with checks */
8990e307 296 I32 last_sv_count;
a0d0e21e 297 HV *hv;
1f2bfc8a 298#ifdef USE_THREADS
33f46ff6 299 Thread t;
cea2e8a9 300 dTHX;
1f2bfc8a 301#endif /* USE_THREADS */
8990e307 302
7766f137
GS
303 /* wait for all pseudo-forked children to finish */
304 PERL_WAIT_FOR_CHILDREN;
305
11343788 306#ifdef USE_THREADS
0f15f207 307#ifndef FAKE_THREADS
8023c3ce
MB
308 /* Pass 1 on any remaining threads: detach joinables, join zombies */
309 retry_cleanup:
533c011a 310 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 311 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 312 "perl_destruct: waiting for %d threads...\n",
533c011a 313 PL_nthreads - 1));
33f46ff6 314 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
315 MUTEX_LOCK(&t->mutex);
316 switch (ThrSTATE(t)) {
317 AV *av;
c7848ba1 318 case THRf_ZOMBIE:
bf49b057 319 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 320 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
321 ThrSETSTATE(t, THRf_DEAD);
322 MUTEX_UNLOCK(&t->mutex);
533c011a 323 PL_nthreads--;
8023c3ce
MB
324 /*
325 * The SvREFCNT_dec below may take a long time (e.g. av
326 * may contain an object scalar whose destructor gets
327 * called) so we have to unlock threads_mutex and start
328 * all over again.
329 */
533c011a 330 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 331 JOIN(t, &av);
605e5515 332 SvREFCNT_dec((SV*)av);
bf49b057 333 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 334 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 335 goto retry_cleanup;
c7848ba1 336 case THRf_R_JOINABLE:
bf49b057 337 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
338 "perl_destruct: detaching thread %p\n", t));
339 ThrSETSTATE(t, THRf_R_DETACHED);
340 /*
341 * We unlock threads_mutex and t->mutex in the opposite order
342 * from which we locked them just so that DETACH won't
343 * deadlock if it panics. It's only a breach of good style
344 * not a bug since they are unlocks not locks.
345 */
533c011a 346 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
347 DETACH(t);
348 MUTEX_UNLOCK(&t->mutex);
8023c3ce 349 goto retry_cleanup;
c7848ba1 350 default:
bf49b057 351 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
352 "perl_destruct: ignoring %p (state %u)\n",
353 t, ThrSTATE(t)));
354 MUTEX_UNLOCK(&t->mutex);
c7848ba1 355 /* fall through and out */
33f46ff6
MB
356 }
357 }
8023c3ce
MB
358 /* We leave the above "Pass 1" loop with threads_mutex still locked */
359
360 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 361 while (PL_nthreads > 1)
11343788 362 {
bf49b057 363 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 364 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
365 PL_nthreads - 1));
366 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
367 }
368 /* At this point, we're the last thread */
533c011a 369 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 370 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
371 MUTEX_DESTROY(&PL_threads_mutex);
372 COND_DESTROY(&PL_nthreads_cond);
0f15f207 373#endif /* !defined(FAKE_THREADS) */
11343788
MB
374#endif /* USE_THREADS */
375
3280af22 376 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
377#ifdef DEBUGGING
378 {
379 char *s;
155aba94 380 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
381 int i = atoi(s);
382 if (destruct_level < i)
383 destruct_level = i;
384 }
4633a7c4
LW
385 }
386#endif
387
8990e307 388 LEAVE;
a0d0e21e
LW
389 FREETMPS;
390
ff0cee69
PP
391 /* We must account for everything. */
392
393 /* Destroy the main CV and syntax tree */
3280af22
NIS
394 if (PL_main_root) {
395 PL_curpad = AvARRAY(PL_comppad);
396 op_free(PL_main_root);
397 PL_main_root = Nullop;
a0d0e21e 398 }
3280af22
NIS
399 PL_curcop = &PL_compiling;
400 PL_main_start = Nullop;
401 SvREFCNT_dec(PL_main_cv);
402 PL_main_cv = Nullcv;
24d3c518 403 PL_dirty = TRUE;
ff0cee69 404
3280af22 405 if (PL_sv_objcount) {
a0d0e21e
LW
406 /*
407 * Try to destruct global references. We do this first so that the
408 * destructors and destructees still exist. Some sv's might remain.
409 * Non-referenced objects are on their own.
410 */
a0d0e21e 411 sv_clean_objs();
8990e307
LW
412 }
413
5cd24f17 414 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
415 SvREFCNT_dec(PL_warnhook);
416 PL_warnhook = Nullsv;
417 SvREFCNT_dec(PL_diehook);
418 PL_diehook = Nullsv;
5cd24f17 419
4b556e6c 420 /* call exit list functions */
3280af22 421 while (PL_exitlistlen-- > 0)
0cb96387 422 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 423
3280af22 424 Safefree(PL_exitlist);
4b556e6c 425
a0d0e21e 426 if (destruct_level == 0){
8990e307 427
a0d0e21e
LW
428 DEBUG_P(debprofdump());
429
430 /* The exit() function will do everything that needs doing. */
431 return;
432 }
5dd60ef7 433
5f05dabc
PP
434 /* loosen bonds of global variables */
435
3280af22
NIS
436 if(PL_rsfp) {
437 (void)PerlIO_close(PL_rsfp);
438 PL_rsfp = Nullfp;
8ebc5c01
PP
439 }
440
441 /* Filters for program text */
3280af22
NIS
442 SvREFCNT_dec(PL_rsfp_filters);
443 PL_rsfp_filters = Nullav;
8ebc5c01
PP
444
445 /* switches */
3280af22
NIS
446 PL_preprocess = FALSE;
447 PL_minus_n = FALSE;
448 PL_minus_p = FALSE;
449 PL_minus_l = FALSE;
450 PL_minus_a = FALSE;
451 PL_minus_F = FALSE;
452 PL_doswitches = FALSE;
599cee73 453 PL_dowarn = G_WARN_OFF;
3280af22
NIS
454 PL_doextract = FALSE;
455 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
456 PL_unsafe = FALSE;
457
458 Safefree(PL_inplace);
459 PL_inplace = Nullch;
a7cb1f99 460 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
461
462 if (PL_e_script) {
463 SvREFCNT_dec(PL_e_script);
464 PL_e_script = Nullsv;
8ebc5c01
PP
465 }
466
467 /* magical thingies */
468
d33b2eba 469 Safefree(PL_ofs); /* $, */
3280af22 470 PL_ofs = Nullch;
5f05dabc 471
d33b2eba 472 Safefree(PL_ors); /* $\ */
3280af22 473 PL_ors = Nullch;
8ebc5c01 474
3280af22
NIS
475 SvREFCNT_dec(PL_rs); /* $/ */
476 PL_rs = Nullsv;
dc92893f 477
3280af22
NIS
478 SvREFCNT_dec(PL_nrs); /* $/ helper */
479 PL_nrs = Nullsv;
5f05dabc 480
d33b2eba
GS
481 PL_multiline = 0; /* $* */
482 Safefree(PL_osname); /* $^O */
483 PL_osname = Nullch;
5f05dabc 484
3280af22
NIS
485 SvREFCNT_dec(PL_statname);
486 PL_statname = Nullsv;
487 PL_statgv = Nullgv;
5f05dabc 488
8ebc5c01
PP
489 /* defgv, aka *_ should be taken care of elsewhere */
490
8ebc5c01 491 /* clean up after study() */
3280af22
NIS
492 SvREFCNT_dec(PL_lastscream);
493 PL_lastscream = Nullsv;
494 Safefree(PL_screamfirst);
495 PL_screamfirst = 0;
496 Safefree(PL_screamnext);
497 PL_screamnext = 0;
8ebc5c01 498
7d5ea4e7
GS
499 /* float buffer */
500 Safefree(PL_efloatbuf);
501 PL_efloatbuf = Nullch;
502 PL_efloatsize = 0;
503
8ebc5c01 504 /* startup and shutdown function lists */
3280af22
NIS
505 SvREFCNT_dec(PL_beginav);
506 SvREFCNT_dec(PL_endav);
7d30b5c4 507 SvREFCNT_dec(PL_checkav);
3280af22
NIS
508 SvREFCNT_dec(PL_initav);
509 PL_beginav = Nullav;
510 PL_endav = Nullav;
7d30b5c4 511 PL_checkav = Nullav;
3280af22 512 PL_initav = Nullav;
5618dfe8 513
8ebc5c01 514 /* shortcuts just get cleared */
3280af22 515 PL_envgv = Nullgv;
3280af22
NIS
516 PL_incgv = Nullgv;
517 PL_hintgv = Nullgv;
518 PL_errgv = Nullgv;
519 PL_argvgv = Nullgv;
520 PL_argvoutgv = Nullgv;
521 PL_stdingv = Nullgv;
bf49b057 522 PL_stderrgv = Nullgv;
3280af22
NIS
523 PL_last_in_gv = Nullgv;
524 PL_replgv = Nullgv;
5c831c24 525 PL_debstash = Nullhv;
8ebc5c01
PP
526
527 /* reset so print() ends up where we expect */
528 setdefout(Nullgv);
5c831c24 529
7a1c5554
GS
530 SvREFCNT_dec(PL_argvout_stack);
531 PL_argvout_stack = Nullav;
8ebc5c01 532
5c831c24
GS
533 SvREFCNT_dec(PL_modglobal);
534 PL_modglobal = Nullhv;
535 SvREFCNT_dec(PL_preambleav);
536 PL_preambleav = Nullav;
537 SvREFCNT_dec(PL_subname);
538 PL_subname = Nullsv;
539 SvREFCNT_dec(PL_linestr);
540 PL_linestr = Nullsv;
541 SvREFCNT_dec(PL_pidstatus);
542 PL_pidstatus = Nullhv;
543 SvREFCNT_dec(PL_toptarget);
544 PL_toptarget = Nullsv;
545 SvREFCNT_dec(PL_bodytarget);
546 PL_bodytarget = Nullsv;
547 PL_formtarget = Nullsv;
548
d33b2eba 549 /* free locale stuff */
b9582b6a 550#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
551 Safefree(PL_collation_name);
552 PL_collation_name = Nullch;
b9582b6a 553#endif
d33b2eba 554
b9582b6a 555#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
556 Safefree(PL_numeric_name);
557 PL_numeric_name = Nullch;
b9582b6a 558#endif
d33b2eba 559
5c831c24
GS
560 /* clear utf8 character classes */
561 SvREFCNT_dec(PL_utf8_alnum);
562 SvREFCNT_dec(PL_utf8_alnumc);
563 SvREFCNT_dec(PL_utf8_ascii);
564 SvREFCNT_dec(PL_utf8_alpha);
565 SvREFCNT_dec(PL_utf8_space);
566 SvREFCNT_dec(PL_utf8_cntrl);
567 SvREFCNT_dec(PL_utf8_graph);
568 SvREFCNT_dec(PL_utf8_digit);
569 SvREFCNT_dec(PL_utf8_upper);
570 SvREFCNT_dec(PL_utf8_lower);
571 SvREFCNT_dec(PL_utf8_print);
572 SvREFCNT_dec(PL_utf8_punct);
573 SvREFCNT_dec(PL_utf8_xdigit);
574 SvREFCNT_dec(PL_utf8_mark);
575 SvREFCNT_dec(PL_utf8_toupper);
576 SvREFCNT_dec(PL_utf8_tolower);
577 PL_utf8_alnum = Nullsv;
578 PL_utf8_alnumc = Nullsv;
579 PL_utf8_ascii = Nullsv;
580 PL_utf8_alpha = Nullsv;
581 PL_utf8_space = Nullsv;
582 PL_utf8_cntrl = Nullsv;
583 PL_utf8_graph = Nullsv;
584 PL_utf8_digit = Nullsv;
585 PL_utf8_upper = Nullsv;
586 PL_utf8_lower = Nullsv;
587 PL_utf8_print = Nullsv;
588 PL_utf8_punct = Nullsv;
589 PL_utf8_xdigit = Nullsv;
590 PL_utf8_mark = Nullsv;
591 PL_utf8_toupper = Nullsv;
592 PL_utf8_totitle = Nullsv;
593 PL_utf8_tolower = Nullsv;
594
971a9dd3
GS
595 if (!specialWARN(PL_compiling.cop_warnings))
596 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 597 PL_compiling.cop_warnings = Nullsv;
01724ea0
GS
598#ifndef USE_ITHREADS
599 SvREFCNT_dec(CopFILEGV(&PL_compiling));
600 CopFILEGV_set(&PL_compiling, Nullgv);
601#endif
5c831c24 602
a0d0e21e 603 /* Prepare to destruct main symbol table. */
5f05dabc 604
3280af22
NIS
605 hv = PL_defstash;
606 PL_defstash = 0;
a0d0e21e 607 SvREFCNT_dec(hv);
5c831c24
GS
608 SvREFCNT_dec(PL_curstname);
609 PL_curstname = Nullsv;
a0d0e21e 610
5a844595
GS
611 /* clear queued errors */
612 SvREFCNT_dec(PL_errors);
613 PL_errors = Nullsv;
614
a0d0e21e 615 FREETMPS;
0453d815 616 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 617 if (PL_scopestack_ix != 0)
0453d815
PM
618 Perl_warner(aTHX_ WARN_INTERNAL,
619 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
620 (long)PL_scopestack_ix);
621 if (PL_savestack_ix != 0)
0453d815
PM
622 Perl_warner(aTHX_ WARN_INTERNAL,
623 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
624 (long)PL_savestack_ix);
625 if (PL_tmps_floor != -1)
0453d815 626 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 627 (long)PL_tmps_floor + 1);
a0d0e21e 628 if (cxstack_ix != -1)
0453d815 629 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 630 (long)cxstack_ix + 1);
a0d0e21e 631 }
8990e307
LW
632
633 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 634 last_sv_count = 0;
d33b2eba 635 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS
636 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
637 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
638 last_sv_count = PL_sv_count;
8990e307
LW
639 sv_clean_all();
640 }
d33b2eba
GS
641 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
642 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
643 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
644 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 645
d4777f27
GS
646 AvREAL_off(PL_fdpid); /* no surviving entries */
647 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
648 PL_fdpid = Nullav;
649
6e72f9df
PP
650 /* Destruct the global string table. */
651 {
652 /* Yell and reset the HeVAL() slots that are still holding refcounts,
653 * so that sv_free() won't fail on them.
654 */
655 I32 riter;
656 I32 max;
657 HE *hent;
658 HE **array;
659
660 riter = 0;
3280af22
NIS
661 max = HvMAX(PL_strtab);
662 array = HvARRAY(PL_strtab);
6e72f9df
PP
663 hent = array[0];
664 for (;;) {
0453d815
PM
665 if (hent && ckWARN_d(WARN_INTERNAL)) {
666 Perl_warner(aTHX_ WARN_INTERNAL,
667 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
668 HeVAL(hent) - Nullsv, HeKEY(hent));
669 HeVAL(hent) = Nullsv;
670 hent = HeNEXT(hent);
671 }
672 if (!hent) {
673 if (++riter > max)
674 break;
675 hent = array[riter];
676 }
677 }
678 }
3280af22 679 SvREFCNT_dec(PL_strtab);
6e72f9df 680
d33b2eba
GS
681 /* free special SVs */
682
683 SvREFCNT(&PL_sv_yes) = 0;
684 sv_clear(&PL_sv_yes);
685 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 686 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
687
688 SvREFCNT(&PL_sv_no) = 0;
689 sv_clear(&PL_sv_no);
690 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 691 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
692
693 SvREFCNT(&PL_sv_undef) = 0;
694 SvREADONLY_off(&PL_sv_undef);
d33b2eba 695
0453d815
PM
696 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
697 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 698
4633a7c4 699 sv_free_arenas();
44a8e56a
PP
700
701 /* No SVs have survived, need to clean out */
3280af22 702 Safefree(PL_origfilename);
3280af22 703 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
704 if (PL_reg_curpm)
705 Safefree(PL_reg_curpm);
82ba1be6 706 Safefree(PL_reg_poscache);
3280af22
NIS
707 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
708 Safefree(PL_op_mask);
6e72f9df 709 nuke_stacks();
3280af22 710 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
a0d0e21e
LW
711
712 DEBUG_P(debprofdump());
11343788 713#ifdef USE_THREADS
5f08fbcd 714 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
715 MUTEX_DESTROY(&PL_sv_mutex);
716 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 717 MUTEX_DESTROY(&PL_cred_mutex);
533c011a 718 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
719#ifdef EMULATE_ATOMIC_REFCOUNTS
720 MUTEX_DESTROY(&PL_svref_mutex);
721#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 722
8023c3ce 723 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
724 Safefree(SvPVX(PL_thrsv));
725 Safefree(SvANY(PL_thrsv));
726 Safefree(PL_thrsv);
727 PL_thrsv = Nullsv;
8023c3ce 728#endif /* USE_THREADS */
d33b2eba 729
fc36a67e
PP
730 /* As the absolutely last thing, free the non-arena SV for mess() */
731
3280af22 732 if (PL_mess_sv) {
9c63abab
GS
733 /* it could have accumulated taint magic */
734 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
735 MAGIC* mg;
736 MAGIC* moremagic;
737 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
738 moremagic = mg->mg_moremagic;
739 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
740 Safefree(mg->mg_ptr);
741 Safefree(mg);
742 }
743 }
fc36a67e 744 /* we know that type >= SVt_PV */
155aba94 745 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
746 Safefree(SvPVX(PL_mess_sv));
747 Safefree(SvANY(PL_mess_sv));
748 Safefree(PL_mess_sv);
749 PL_mess_sv = Nullsv;
fc36a67e 750 }
79072805
LW
751}
752
954c1994
GS
753/*
754=for apidoc perl_free
755
756Releases a Perl interpreter. See L<perlembed>.
757
758=cut
759*/
760
79072805 761void
0cb96387 762perl_free(pTHXx)
79072805 763{
c5be433b 764#if defined(PERL_OBJECT)
7f0d82f7 765 PerlMem_free(this);
76e3520e 766#else
1c0ca838
GS
767# if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
768 void *host = w32_internal_host;
7f0d82f7 769 PerlMem_free(aTHXx);
1c0ca838
GS
770 win32_delete_internal_host(host);
771# else
772 PerlMem_free(aTHXx);
773# endif
76e3520e 774#endif
79072805
LW
775}
776
4b556e6c 777void
864dbfa3 778Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 779{
3280af22
NIS
780 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
781 PL_exitlist[PL_exitlistlen].fn = fn;
782 PL_exitlist[PL_exitlistlen].ptr = ptr;
783 ++PL_exitlistlen;
4b556e6c
JD
784}
785
954c1994
GS
786/*
787=for apidoc perl_parse
788
789Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
790
791=cut
792*/
793
79072805 794int
0cb96387 795perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 796{
11343788 797 dTHR;
6224f72b 798 I32 oldscope;
6224f72b 799 int ret;
db36c5a1 800 dJMPENV;
cea2e8a9
GS
801#ifdef USE_THREADS
802 dTHX;
803#endif
8d063cd8 804
a687059c
LW
805#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
806#ifdef IAMSUID
807#undef IAMSUID
cea2e8a9 808 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
809setuid perl scripts securely.\n");
810#endif
811#endif
812
8f1f23e8 813#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
814 _dyld_lookup_and_bind
815 ("__environ", (unsigned long *) &environ_pointer, NULL);
816#endif /* environ */
817
3280af22
NIS
818 PL_origargv = argv;
819 PL_origargc = argc;
a0d0e21e 820#ifndef VMS /* VMS doesn't have environ array */
3280af22 821 PL_origenviron = environ;
a0d0e21e
LW
822#endif
823
3280af22 824 if (PL_do_undump) {
a0d0e21e
LW
825
826 /* Come here if running an undumped a.out. */
827
3280af22
NIS
828 PL_origfilename = savepv(argv[0]);
829 PL_do_undump = FALSE;
a0d0e21e 830 cxstack_ix = -1; /* start label stack again */
748a9306 831 init_ids();
a0d0e21e
LW
832 init_postdump_symbols(argc,argv,env);
833 return 0;
834 }
835
3280af22
NIS
836 if (PL_main_root) {
837 PL_curpad = AvARRAY(PL_comppad);
838 op_free(PL_main_root);
839 PL_main_root = Nullop;
ff0cee69 840 }
3280af22
NIS
841 PL_main_start = Nullop;
842 SvREFCNT_dec(PL_main_cv);
843 PL_main_cv = Nullcv;
79072805 844
3280af22
NIS
845 time(&PL_basetime);
846 oldscope = PL_scopestack_ix;
599cee73 847 PL_dowarn = G_WARN_OFF;
f86702cc 848
14dd3ad8
GS
849#ifdef PERL_FLEXIBLE_EXCEPTIONS
850 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
851#else
852 JMPENV_PUSH(ret);
853#endif
6224f72b 854 switch (ret) {
312caa8e 855 case 0:
14dd3ad8
GS
856#ifndef PERL_FLEXIBLE_EXCEPTIONS
857 parse_body(env,xsinit);
858#endif
7d30b5c4
GS
859 if (PL_checkav)
860 call_list(oldscope, PL_checkav);
14dd3ad8
GS
861 ret = 0;
862 break;
6224f72b
GS
863 case 1:
864 STATUS_ALL_FAILURE;
865 /* FALL THROUGH */
866 case 2:
867 /* my_exit() was called */
3280af22 868 while (PL_scopestack_ix > oldscope)
6224f72b
GS
869 LEAVE;
870 FREETMPS;
3280af22 871 PL_curstash = PL_defstash;
7d30b5c4
GS
872 if (PL_checkav)
873 call_list(oldscope, PL_checkav);
14dd3ad8
GS
874 ret = STATUS_NATIVE_EXPORT;
875 break;
6224f72b 876 case 3:
bf49b057 877 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
878 ret = 1;
879 break;
6224f72b 880 }
14dd3ad8
GS
881 JMPENV_POP;
882 return ret;
883}
884
885#ifdef PERL_FLEXIBLE_EXCEPTIONS
886STATIC void *
887S_vparse_body(pTHX_ va_list args)
888{
889 char **env = va_arg(args, char**);
890 XSINIT_t xsinit = va_arg(args, XSINIT_t);
891
892 return parse_body(env, xsinit);
312caa8e 893}
14dd3ad8 894#endif
312caa8e
CS
895
896STATIC void *
14dd3ad8 897S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e
CS
898{
899 dTHR;
900 int argc = PL_origargc;
901 char **argv = PL_origargv;
312caa8e
CS
902 char *scriptname = NULL;
903 int fdscript = -1;
904 VOL bool dosearch = FALSE;
905 char *validarg = "";
906 AV* comppadlist;
907 register SV *sv;
908 register char *s;
f4c556ac 909 char *cddir = Nullch;
312caa8e 910
3280af22 911 sv_setpvn(PL_linestr,"",0);
79cb57f6 912 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
913 SAVEFREESV(sv);
914 init_main_stash();
54310121 915
6224f72b
GS
916 for (argc--,argv++; argc > 0; argc--,argv++) {
917 if (argv[0][0] != '-' || !argv[0][1])
918 break;
919#ifdef DOSUID
920 if (*validarg)
921 validarg = " PHOOEY ";
922 else
923 validarg = argv[0];
13281fa4 924#endif
6224f72b
GS
925 s = argv[0]+1;
926 reswitch:
927 switch (*s) {
729a02f2
GS
928 case 'C':
929#ifdef WIN32
c0932edc 930 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
931 /* FALL THROUGH */
932#endif
1d5472a9
GS
933#ifndef PERL_STRICT_CR
934 case '\r':
935#endif
6224f72b
GS
936 case ' ':
937 case '0':
938 case 'F':
939 case 'a':
940 case 'c':
941 case 'd':
942 case 'D':
943 case 'h':
944 case 'i':
945 case 'l':
946 case 'M':
947 case 'm':
948 case 'n':
949 case 'p':
950 case 's':
951 case 'u':
952 case 'U':
953 case 'v':
599cee73
PM
954 case 'W':
955 case 'X':
6224f72b 956 case 'w':
155aba94 957 if ((s = moreswitches(s)))
6224f72b
GS
958 goto reswitch;
959 break;
33b78306 960
6224f72b 961 case 'T':
3280af22 962 PL_tainting = TRUE;
6224f72b
GS
963 s++;
964 goto reswitch;
f86702cc 965
6224f72b 966 case 'e':
3280af22 967 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 968 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 969 if (!PL_e_script) {
79cb57f6 970 PL_e_script = newSVpvn("",0);
0cb96387 971 filter_add(read_e_script, NULL);
6224f72b
GS
972 }
973 if (*++s)
3280af22 974 sv_catpv(PL_e_script, s);
6224f72b 975 else if (argv[1]) {
3280af22 976 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
977 argc--,argv++;
978 }
979 else
cea2e8a9 980 Perl_croak(aTHX_ "No code specified for -e");
3280af22 981 sv_catpv(PL_e_script, "\n");
6224f72b 982 break;
afe37c7d 983
6224f72b
GS
984 case 'I': /* -I handled both here and in moreswitches() */
985 forbid_setid("-I");
986 if (!*++s && (s=argv[1]) != Nullch) {
987 argc--,argv++;
988 }
6224f72b 989 if (s && *s) {
0df16ed7
GS
990 char *p;
991 STRLEN len = strlen(s);
992 p = savepvn(s, len);
9c8a64f0 993 incpush(p, TRUE, TRUE);
0df16ed7
GS
994 sv_catpvn(sv, "-I", 2);
995 sv_catpvn(sv, p, len);
996 sv_catpvn(sv, " ", 1);
6224f72b 997 Safefree(p);
0df16ed7
GS
998 }
999 else
a67e862a 1000 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1001 break;
1002 case 'P':
1003 forbid_setid("-P");
3280af22 1004 PL_preprocess = TRUE;
6224f72b
GS
1005 s++;
1006 goto reswitch;
1007 case 'S':
1008 forbid_setid("-S");
1009 dosearch = TRUE;
1010 s++;
1011 goto reswitch;
1012 case 'V':
3280af22
NIS
1013 if (!PL_preambleav)
1014 PL_preambleav = newAV();
1015 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1016 if (*++s != ':') {
3280af22 1017 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1018#ifdef VMS
6b88bc9c 1019 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1020#else
3280af22 1021 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1022#endif
3280af22 1023 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1024# ifdef DEBUGGING
3280af22 1025 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1026# endif
6224f72b 1027# ifdef MULTIPLICITY
8f872242 1028 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1029# endif
b363f7ed
GS
1030# ifdef USE_THREADS
1031 sv_catpv(PL_Sv," USE_THREADS");
1032# endif
ac5e8965
JH
1033# ifdef USE_ITHREADS
1034 sv_catpv(PL_Sv," USE_ITHREADS");
1035# endif
10cc9d2a
JH
1036# ifdef USE_64_BIT_INT
1037 sv_catpv(PL_Sv," USE_64_BIT_INT");
1038# endif
1039# ifdef USE_64_BIT_ALL
1040 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1041# endif
1042# ifdef USE_LONG_DOUBLE
1043 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1044# endif
53430762
JH
1045# ifdef USE_LARGE_FILES
1046 sv_catpv(PL_Sv," USE_LARGE_FILES");
1047# endif
ac5e8965
JH
1048# ifdef USE_SOCKS
1049 sv_catpv(PL_Sv," USE_SOCKS");
1050# endif
b363f7ed
GS
1051# ifdef PERL_OBJECT
1052 sv_catpv(PL_Sv," PERL_OBJECT");
1053# endif
1054# ifdef PERL_IMPLICIT_CONTEXT
1055 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1056# endif
1057# ifdef PERL_IMPLICIT_SYS
1058 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1059# endif
3280af22 1060 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1061
6224f72b
GS
1062#if defined(LOCAL_PATCH_COUNT)
1063 if (LOCAL_PATCH_COUNT > 0) {
1064 int i;
3280af22 1065 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1066 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1067 if (PL_localpatches[i])
cea2e8a9 1068 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1069 }
1070 }
1071#endif
cea2e8a9 1072 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1073#ifdef __DATE__
1074# ifdef __TIME__
cea2e8a9 1075 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1076# else
cea2e8a9 1077 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1078# endif
1079#endif
3280af22 1080 sv_catpv(PL_Sv, "; \
6224f72b
GS
1081$\"=\"\\n \"; \
1082@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1083print \" \\%ENV:\\n @env\\n\" if @env; \
1084print \" \\@INC:\\n @INC\\n\";");
1085 }
1086 else {
3280af22
NIS
1087 PL_Sv = newSVpv("config_vars(qw(",0);
1088 sv_catpv(PL_Sv, ++s);
1089 sv_catpv(PL_Sv, "))");
6224f72b
GS
1090 s += strlen(s);
1091 }
3280af22 1092 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1093 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1094 goto reswitch;
1095 case 'x':
3280af22 1096 PL_doextract = TRUE;
6224f72b
GS
1097 s++;
1098 if (*s)
f4c556ac 1099 cddir = s;
6224f72b
GS
1100 break;
1101 case 0:
1102 break;
1103 case '-':
1104 if (!*++s || isSPACE(*s)) {
1105 argc--,argv++;
1106 goto switch_end;
1107 }
1108 /* catch use of gnu style long options */
1109 if (strEQ(s, "version")) {
1110 s = "v";
1111 goto reswitch;
1112 }
1113 if (strEQ(s, "help")) {
1114 s = "h";
1115 goto reswitch;
1116 }
1117 s--;
1118 /* FALL THROUGH */
1119 default:
cea2e8a9 1120 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1121 }
1122 }
6224f72b 1123 switch_end:
54310121 1124
f675dbe5
CB
1125 if (
1126#ifndef SECURE_INTERNAL_GETENV
1127 !PL_tainting &&
1128#endif
0df16ed7
GS
1129 (s = PerlEnv_getenv("PERL5OPT")))
1130 {
74288ac8
GS
1131 while (isSPACE(*s))
1132 s++;
1133 if (*s == '-' && *(s+1) == 'T')
1134 PL_tainting = TRUE;
1135 else {
1136 while (s && *s) {
1137 while (isSPACE(*s))
1138 s++;
1139 if (*s == '-') {
1140 s++;
1141 if (isSPACE(*s))
1142 continue;
1143 }
1144 if (!*s)
1145 break;
1146 if (!strchr("DIMUdmw", *s))
cea2e8a9 1147 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 1148 s = moreswitches(s);
6224f72b 1149 }
6224f72b
GS
1150 }
1151 }
a0d0e21e 1152
6224f72b
GS
1153 if (!scriptname)
1154 scriptname = argv[0];
3280af22 1155 if (PL_e_script) {
6224f72b
GS
1156 argc++,argv--;
1157 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1158 }
1159 else if (scriptname == Nullch) {
1160#ifdef MSDOS
1161 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1162 moreswitches("h");
1163#endif
1164 scriptname = "-";
1165 }
1166
1167 init_perllib();
1168
1169 open_script(scriptname,dosearch,sv,&fdscript);
1170
1171 validate_suid(validarg, scriptname,fdscript);
1172
0b5b802d
GS
1173#if defined(SIGCHLD) || defined(SIGCLD)
1174 {
1175#ifndef SIGCHLD
1176# define SIGCHLD SIGCLD
1177#endif
1178 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1179 if (sigstate == SIG_IGN) {
1180 if (ckWARN(WARN_SIGNAL))
1181 Perl_warner(aTHX_ WARN_SIGNAL,
1182 "Can't ignore signal CHLD, forcing to default");
1183 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1184 }
1185 }
1186#endif
1187
f4c556ac 1188 if (PL_doextract) {
6224f72b 1189 find_beginning();
f4c556ac
GS
1190 if (cddir && PerlDir_chdir(cddir) < 0)
1191 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1192
1193 }
6224f72b 1194
3280af22
NIS
1195 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1196 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1197 CvUNIQUE_on(PL_compcv);
1198
1199 PL_comppad = newAV();
1200 av_push(PL_comppad, Nullsv);
1201 PL_curpad = AvARRAY(PL_comppad);
1202 PL_comppad_name = newAV();
1203 PL_comppad_name_fill = 0;
1204 PL_min_intro_pending = 0;
1205 PL_padix = 0;
6224f72b 1206#ifdef USE_THREADS
79cb57f6 1207 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1208 PL_curpad[0] = (SV*)newAV();
1209 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1210 CvOWNER(PL_compcv) = 0;
1211 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1212 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1213#endif /* USE_THREADS */
1214
1215 comppadlist = newAV();
1216 AvREAL_off(comppadlist);
3280af22
NIS
1217 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1218 av_store(comppadlist, 1, (SV*)PL_comppad);
1219 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS
1220
1221 boot_core_UNIVERSAL();
9a34ef1d 1222#ifndef PERL_MICRO
09bef843 1223 boot_core_xsutils();
9a34ef1d 1224#endif
6224f72b
GS
1225
1226 if (xsinit)
0cb96387 1227 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
5db16f6a 1228#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
c5be433b 1229 init_os_extras();
6224f72b
GS
1230#endif
1231
29209bc5
JH
1232#ifdef USE_SOCKS
1233 SOCKSinit(argv[0]);
1234#endif
1235
6224f72b
GS
1236 init_predump_symbols();
1237 /* init_postdump_symbols not currently designed to be called */
1238 /* more than once (ENV isn't cleared first, for example) */
1239 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1240 if (!PL_do_undump)
6224f72b
GS
1241 init_postdump_symbols(argc,argv,env);
1242
1243 init_lexer();
1244
1245 /* now parse the script */
1246
1247 SETERRNO(0,SS$_NORMAL);
3280af22
NIS
1248 PL_error_count = 0;
1249 if (yyparse() || PL_error_count) {
1250 if (PL_minus_c)
cea2e8a9 1251 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1252 else {
cea2e8a9 1253 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1254 PL_origfilename);
6224f72b
GS
1255 }
1256 }
57843af0 1257 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1258 PL_curstash = PL_defstash;
1259 PL_preprocess = FALSE;
1260 if (PL_e_script) {
1261 SvREFCNT_dec(PL_e_script);
1262 PL_e_script = Nullsv;
6224f72b
GS
1263 }
1264
1265 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1266 SvREFCNT_dec(PL_rs);
1267 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1268 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1269 if (PL_do_undump)
6224f72b
GS
1270 my_unexec();
1271
57843af0
GS
1272 if (isWARN_ONCE) {
1273 SAVECOPFILE(PL_curcop);
1274 SAVECOPLINE(PL_curcop);
3280af22 1275 gv_check(PL_defstash);
57843af0 1276 }
6224f72b
GS
1277
1278 LEAVE;
1279 FREETMPS;
1280
1281#ifdef MYMALLOC
1282 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1283 dump_mstats("after compilation:");
1284#endif
1285
1286 ENTER;
3280af22 1287 PL_restartop = 0;
312caa8e 1288 return NULL;
6224f72b
GS
1289}
1290
954c1994
GS
1291/*
1292=for apidoc perl_run
1293
1294Tells a Perl interpreter to run. See L<perlembed>.
1295
1296=cut
1297*/
1298
6224f72b 1299int
0cb96387 1300perl_run(pTHXx)
6224f72b 1301{
de616352 1302 dTHR;
6224f72b 1303 I32 oldscope;
14dd3ad8 1304 int ret = 0;
db36c5a1 1305 dJMPENV;
cea2e8a9
GS
1306#ifdef USE_THREADS
1307 dTHX;
1308#endif
6224f72b 1309
3280af22 1310 oldscope = PL_scopestack_ix;
6224f72b 1311
14dd3ad8 1312#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1313 redo_body:
14dd3ad8
GS
1314 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1315#else
1316 JMPENV_PUSH(ret);
1317#endif
6224f72b
GS
1318 switch (ret) {
1319 case 1:
1320 cxstack_ix = -1; /* start context stack again */
312caa8e 1321 goto redo_body;
14dd3ad8
GS
1322 case 0: /* normal completion */
1323#ifndef PERL_FLEXIBLE_EXCEPTIONS
1324 redo_body:
1325 run_body(oldscope);
1326#endif
1327 /* FALL THROUGH */
1328 case 2: /* my_exit() */
3280af22 1329 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1330 LEAVE;
1331 FREETMPS;
3280af22 1332 PL_curstash = PL_defstash;
865be832 1333 if (PL_endav && !PL_minus_c)
3280af22 1334 call_list(oldscope, PL_endav);
6224f72b
GS
1335#ifdef MYMALLOC
1336 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1337 dump_mstats("after execution: ");
1338#endif
14dd3ad8
GS
1339 ret = STATUS_NATIVE_EXPORT;
1340 break;
6224f72b 1341 case 3:
312caa8e
CS
1342 if (PL_restartop) {
1343 POPSTACK_TO(PL_mainstack);
1344 goto redo_body;
6224f72b 1345 }
bf49b057 1346 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1347 FREETMPS;
14dd3ad8
GS
1348 ret = 1;
1349 break;
6224f72b
GS
1350 }
1351
14dd3ad8
GS
1352 JMPENV_POP;
1353 return ret;
312caa8e
CS
1354}
1355
14dd3ad8 1356#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1357STATIC void *
14dd3ad8 1358S_vrun_body(pTHX_ va_list args)
312caa8e 1359{
312caa8e
CS
1360 I32 oldscope = va_arg(args, I32);
1361
14dd3ad8
GS
1362 return run_body(oldscope);
1363}
1364#endif
1365
1366
1367STATIC void *
1368S_run_body(pTHX_ I32 oldscope)
1369{
1370 dTHR;
1371
6224f72b 1372 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1373 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1374
3280af22 1375 if (!PL_restartop) {
6224f72b
GS
1376 DEBUG_x(dump_all());
1377 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1378 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1379 PTR2UV(thr)));
6224f72b 1380
3280af22 1381 if (PL_minus_c) {
bf49b057 1382 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
1383 my_exit(0);
1384 }
3280af22 1385 if (PERLDB_SINGLE && PL_DBsingle)
312caa8e 1386 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1387 if (PL_initav)
1388 call_list(oldscope, PL_initav);
6224f72b
GS
1389 }
1390
1391 /* do it */
1392
3280af22 1393 if (PL_restartop) {
533c011a 1394 PL_op = PL_restartop;
3280af22 1395 PL_restartop = 0;
cea2e8a9 1396 CALLRUNOPS(aTHX);
6224f72b 1397 }
3280af22
NIS
1398 else if (PL_main_start) {
1399 CvDEPTH(PL_main_cv) = 1;
533c011a 1400 PL_op = PL_main_start;
cea2e8a9 1401 CALLRUNOPS(aTHX);
6224f72b
GS
1402 }
1403
f6b3007c
JH
1404 my_exit(0);
1405 /* NOTREACHED */
312caa8e 1406 return NULL;
6224f72b
GS
1407}
1408
954c1994
GS
1409/*
1410=for apidoc p||get_sv
1411
1412Returns the SV of the specified Perl scalar. If C<create> is set and the
1413Perl variable does not exist then it will be created. If C<create> is not
1414set and the variable does not exist then NULL is returned.
1415
1416=cut
1417*/
1418
6224f72b 1419SV*
864dbfa3 1420Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1421{
1422 GV *gv;
1423#ifdef USE_THREADS
1424 if (name[1] == '\0' && !isALPHA(name[0])) {
1425 PADOFFSET tmp = find_threadsv(name);
1426 if (tmp != NOT_IN_PAD) {
1427 dTHR;
1428 return THREADSV(tmp);
1429 }
1430 }
1431#endif /* USE_THREADS */
1432 gv = gv_fetchpv(name, create, SVt_PV);
1433 if (gv)
1434 return GvSV(gv);
1435 return Nullsv;
1436}
1437
954c1994
GS
1438/*
1439=for apidoc p||get_av
1440
1441Returns the AV of the specified Perl array. If C<create> is set and the
1442Perl variable does not exist then it will be created. If C<create> is not
1443set and the variable does not exist then NULL is returned.
1444
1445=cut
1446*/
1447
6224f72b 1448AV*
864dbfa3 1449Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1450{
1451 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1452 if (create)
1453 return GvAVn(gv);
1454 if (gv)
1455 return GvAV(gv);
1456 return Nullav;
1457}
1458
954c1994
GS
1459/*
1460=for apidoc p||get_hv
1461
1462Returns the HV of the specified Perl hash. If C<create> is set and the
1463Perl variable does not exist then it will be created. If C<create> is not
1464set and the variable does not exist then NULL is returned.
1465
1466=cut
1467*/
1468
6224f72b 1469HV*
864dbfa3 1470Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1471{
a0d0e21e
LW
1472 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1473 if (create)
1474 return GvHVn(gv);
1475 if (gv)
1476 return GvHV(gv);
1477 return Nullhv;
1478}
1479
954c1994
GS
1480/*
1481=for apidoc p||get_cv
1482
1483Returns the CV of the specified Perl subroutine. If C<create> is set and
1484the Perl subroutine does not exist then it will be declared (which has the
1485same effect as saying C<sub name;>). If C<create> is not set and the
1486subroutine does not exist then NULL is returned.
1487
1488=cut
1489*/
1490
a0d0e21e 1491CV*
864dbfa3 1492Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1493{
1494 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1495 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1496 /* XXX this is probably not what they think they're getting.
1497 * It has the same effect as "sub name;", i.e. just a forward
1498 * declaration! */
8ebc5c01 1499 if (create && !GvCVu(gv))
774d564b 1500 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1501 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1502 Nullop,
a0d0e21e
LW
1503 Nullop);
1504 if (gv)
8ebc5c01 1505 return GvCVu(gv);
a0d0e21e
LW
1506 return Nullcv;
1507}
1508
79072805
LW
1509/* Be sure to refetch the stack pointer after calling these routines. */
1510
954c1994
GS
1511/*
1512=for apidoc p||call_argv
1513
1514Performs a callback to the specified Perl sub. See L<perlcall>.
1515
1516=cut
1517*/
1518
a0d0e21e 1519I32
864dbfa3 1520Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
8ac85365
NIS
1521
1522 /* See G_* flags in cop.h */
1523 /* null terminated arg list */
8990e307 1524{
a0d0e21e 1525 dSP;
8990e307 1526
924508f0 1527 PUSHMARK(SP);
a0d0e21e 1528 if (argv) {
8990e307 1529 while (*argv) {
a0d0e21e 1530 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1531 argv++;
1532 }
a0d0e21e 1533 PUTBACK;
8990e307 1534 }
864dbfa3 1535 return call_pv(sub_name, flags);
8990e307
LW
1536}
1537
954c1994
GS
1538/*
1539=for apidoc p||call_pv
1540
1541Performs a callback to the specified Perl sub. See L<perlcall>.
1542
1543=cut
1544*/
1545
a0d0e21e 1546I32
864dbfa3 1547Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1548 /* name of the subroutine */
1549 /* See G_* flags in cop.h */
a0d0e21e 1550{
864dbfa3 1551 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1552}
1553
954c1994
GS
1554/*
1555=for apidoc p||call_method
1556
1557Performs a callback to the specified Perl method. The blessed object must
1558be on the stack. See L<perlcall>.
1559
1560=cut
1561*/
1562
a0d0e21e 1563I32
864dbfa3 1564Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1565 /* name of the subroutine */
1566 /* See G_* flags in cop.h */
a0d0e21e
LW
1567{
1568 dSP;
1569 OP myop;
0f79a09d 1570 if (!PL_op) {
9b94d1dd 1571 Zero(&myop, 1, OP);
533c011a 1572 PL_op = &myop;
0f79a09d 1573 }
a0d0e21e
LW
1574 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1575 PUTBACK;
cea2e8a9 1576 pp_method();
d33b2eba
GS
1577 if (PL_op == &myop)
1578 PL_op = Nullop;
864dbfa3 1579 return call_sv(*PL_stack_sp--, flags);
a0d0e21e
LW
1580}
1581
1582/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1583/*
1584=for apidoc p||call_sv
1585
1586Performs a callback to the Perl sub whose name is in the SV. See
1587L<perlcall>.
1588
1589=cut
1590*/
1591
a0d0e21e 1592I32
864dbfa3 1593Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365
NIS
1594
1595 /* See G_* flags in cop.h */
a0d0e21e 1596{
924508f0 1597 dSP;
a0d0e21e 1598 LOGOP myop; /* fake syntax tree node */
aa689395 1599 I32 oldmark;
a0d0e21e 1600 I32 retval;
a0d0e21e 1601 I32 oldscope;
54310121 1602 bool oldcatch = CATCH_GET;
6224f72b 1603 int ret;
533c011a 1604 OP* oldop = PL_op;
db36c5a1 1605 dJMPENV;
1e422769 1606
a0d0e21e
LW
1607 if (flags & G_DISCARD) {
1608 ENTER;
1609 SAVETMPS;
1610 }
1611
aa689395 1612 Zero(&myop, 1, LOGOP);
54310121 1613 myop.op_next = Nullop;
f51d4af5 1614 if (!(flags & G_NOARGS))
aa689395 1615 myop.op_flags |= OPf_STACKED;
54310121
PP
1616 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1617 (flags & G_ARRAY) ? OPf_WANT_LIST :
1618 OPf_WANT_SCALAR);
462e5cf6 1619 SAVEOP();
533c011a 1620 PL_op = (OP*)&myop;
aa689395 1621
3280af22
NIS
1622 EXTEND(PL_stack_sp, 1);
1623 *++PL_stack_sp = sv;
aa689395 1624 oldmark = TOPMARK;
3280af22 1625 oldscope = PL_scopestack_ix;
a0d0e21e 1626
3280af22 1627 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1628 /* Handle first BEGIN of -d. */
3280af22 1629 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1630 /* Try harder, since this may have been a sighandler, thus
1631 * curstash may be meaningless. */
3280af22 1632 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1633 && !(flags & G_NODEBUG))
533c011a 1634 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1635
312caa8e 1636 if (!(flags & G_EVAL)) {
0cdb2077 1637 CATCH_SET(TRUE);
14dd3ad8 1638 call_body((OP*)&myop, FALSE);
312caa8e 1639 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1640 CATCH_SET(oldcatch);
312caa8e
CS
1641 }
1642 else {
533c011a 1643 cLOGOP->op_other = PL_op;
3280af22 1644 PL_markstack_ptr--;
4633a7c4
LW
1645 /* we're trying to emulate pp_entertry() here */
1646 {
c09156bb 1647 register PERL_CONTEXT *cx;
54310121 1648 I32 gimme = GIMME_V;
4633a7c4
LW
1649
1650 ENTER;
1651 SAVETMPS;
1652
533c011a 1653 push_return(PL_op->op_next);
1d76a5c3 1654 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1655 PUSHEVAL(cx, 0, 0);
533c011a 1656 PL_eval_root = PL_op; /* Only needed so that goto works right. */
4633a7c4 1657
faef0170 1658 PL_in_eval = EVAL_INEVAL;
4633a7c4 1659 if (flags & G_KEEPERR)
faef0170 1660 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1661 else
38a03e6e 1662 sv_setpv(ERRSV,"");
4633a7c4 1663 }
3280af22 1664 PL_markstack_ptr++;
a0d0e21e 1665
14dd3ad8
GS
1666#ifdef PERL_FLEXIBLE_EXCEPTIONS
1667 redo_body:
1668 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1669 (OP*)&myop, FALSE);
14dd3ad8
GS
1670#else
1671 JMPENV_PUSH(ret);
1672#endif
6224f72b
GS
1673 switch (ret) {
1674 case 0:
14dd3ad8
GS
1675#ifndef PERL_FLEXIBLE_EXCEPTIONS
1676 redo_body:
1677 call_body((OP*)&myop, FALSE);
1678#endif
312caa8e
CS
1679 retval = PL_stack_sp - (PL_stack_base + oldmark);
1680 if (!(flags & G_KEEPERR))
1681 sv_setpv(ERRSV,"");
a0d0e21e 1682 break;
6224f72b 1683 case 1:
f86702cc 1684 STATUS_ALL_FAILURE;
a0d0e21e 1685 /* FALL THROUGH */
6224f72b 1686 case 2:
a0d0e21e 1687 /* my_exit() was called */
3280af22 1688 PL_curstash = PL_defstash;
a0d0e21e 1689 FREETMPS;
14dd3ad8 1690 JMPENV_POP;
cc3604b1 1691 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1692 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1693 my_exit_jump();
a0d0e21e 1694 /* NOTREACHED */
6224f72b 1695 case 3:
3280af22 1696 if (PL_restartop) {
533c011a 1697 PL_op = PL_restartop;
3280af22 1698 PL_restartop = 0;
312caa8e 1699 goto redo_body;
a0d0e21e 1700 }
3280af22 1701 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1702 if (flags & G_ARRAY)
1703 retval = 0;
1704 else {
1705 retval = 1;
3280af22 1706 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1707 }
312caa8e 1708 break;
a0d0e21e 1709 }
a0d0e21e 1710
3280af22 1711 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1712 SV **newsp;
1713 PMOP *newpm;
1714 I32 gimme;
c09156bb 1715 register PERL_CONTEXT *cx;
a0a2876f
LW
1716 I32 optype;
1717
1718 POPBLOCK(cx,newpm);
1719 POPEVAL(cx);
1720 pop_return();
3280af22 1721 PL_curpm = newpm;
a0a2876f 1722 LEAVE;
a0d0e21e 1723 }
14dd3ad8 1724 JMPENV_POP;
a0d0e21e 1725 }
1e422769 1726
a0d0e21e 1727 if (flags & G_DISCARD) {
3280af22 1728 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1729 retval = 0;
1730 FREETMPS;
1731 LEAVE;
1732 }
533c011a 1733 PL_op = oldop;
a0d0e21e
LW
1734 return retval;
1735}
1736
14dd3ad8 1737#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1738STATIC void *
14dd3ad8 1739S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1740{
1741 OP *myop = va_arg(args, OP*);
1742 int is_eval = va_arg(args, int);
1743
14dd3ad8 1744 call_body(myop, is_eval);
312caa8e
CS
1745 return NULL;
1746}
14dd3ad8 1747#endif
312caa8e
CS
1748
1749STATIC void
14dd3ad8 1750S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e
CS
1751{
1752 dTHR;
1753
1754 if (PL_op == myop) {
1755 if (is_eval)
cea2e8a9 1756 PL_op = Perl_pp_entereval(aTHX);
312caa8e 1757 else
cea2e8a9 1758 PL_op = Perl_pp_entersub(aTHX);
312caa8e
CS
1759 }
1760 if (PL_op)
cea2e8a9 1761 CALLRUNOPS(aTHX);
312caa8e
CS
1762}
1763
6e72f9df 1764/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1765
954c1994
GS
1766/*
1767=for apidoc p||eval_sv
1768
1769Tells Perl to C<eval> the string in the SV.
1770
1771=cut
1772*/
1773
a0d0e21e 1774I32
864dbfa3 1775Perl_eval_sv(pTHX_ SV *sv, I32 flags)
8ac85365
NIS
1776
1777 /* See G_* flags in cop.h */
a0d0e21e 1778{
924508f0 1779 dSP;
a0d0e21e 1780 UNOP myop; /* fake syntax tree node */
3280af22 1781 I32 oldmark = SP - PL_stack_base;
4633a7c4 1782 I32 retval;
4633a7c4 1783 I32 oldscope;
6224f72b 1784 int ret;
533c011a 1785 OP* oldop = PL_op;
db36c5a1 1786 dJMPENV;
84902520 1787
4633a7c4
LW
1788 if (flags & G_DISCARD) {
1789 ENTER;
1790 SAVETMPS;
1791 }
1792
462e5cf6 1793 SAVEOP();
533c011a
NIS
1794 PL_op = (OP*)&myop;
1795 Zero(PL_op, 1, UNOP);
3280af22
NIS
1796 EXTEND(PL_stack_sp, 1);
1797 *++PL_stack_sp = sv;
1798 oldscope = PL_scopestack_ix;
79072805 1799
4633a7c4
LW
1800 if (!(flags & G_NOARGS))
1801 myop.op_flags = OPf_STACKED;
79072805 1802 myop.op_next = Nullop;
6e72f9df 1803 myop.op_type = OP_ENTEREVAL;
54310121
PP
1804 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1805 (flags & G_ARRAY) ? OPf_WANT_LIST :
1806 OPf_WANT_SCALAR);
6e72f9df
PP
1807 if (flags & G_KEEPERR)
1808 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1809
14dd3ad8 1810#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1811 redo_body:
14dd3ad8 1812 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1813 (OP*)&myop, TRUE);
14dd3ad8
GS
1814#else
1815 JMPENV_PUSH(ret);
1816#endif
6224f72b
GS
1817 switch (ret) {
1818 case 0:
14dd3ad8
GS
1819#ifndef PERL_FLEXIBLE_EXCEPTIONS
1820 redo_body:
1821 call_body((OP*)&myop,TRUE);
1822#endif
312caa8e
CS
1823 retval = PL_stack_sp - (PL_stack_base + oldmark);
1824 if (!(flags & G_KEEPERR))
1825 sv_setpv(ERRSV,"");
4633a7c4 1826 break;
6224f72b 1827 case 1:
f86702cc 1828 STATUS_ALL_FAILURE;
4633a7c4 1829 /* FALL THROUGH */
6224f72b 1830 case 2:
4633a7c4 1831 /* my_exit() was called */
3280af22 1832 PL_curstash = PL_defstash;
4633a7c4 1833 FREETMPS;
14dd3ad8 1834 JMPENV_POP;
cc3604b1 1835 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1836 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1837 my_exit_jump();
4633a7c4 1838 /* NOTREACHED */
6224f72b 1839 case 3:
3280af22 1840 if (PL_restartop) {
533c011a 1841 PL_op = PL_restartop;
3280af22 1842 PL_restartop = 0;
312caa8e 1843 goto redo_body;
4633a7c4 1844 }
3280af22 1845 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1846 if (flags & G_ARRAY)
1847 retval = 0;
1848 else {
1849 retval = 1;
3280af22 1850 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1851 }
312caa8e 1852 break;
4633a7c4
LW
1853 }
1854
14dd3ad8 1855 JMPENV_POP;
4633a7c4 1856 if (flags & G_DISCARD) {
3280af22 1857 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1858 retval = 0;
1859 FREETMPS;
1860 LEAVE;
1861 }
533c011a 1862 PL_op = oldop;
4633a7c4
LW
1863 return retval;
1864}
1865
954c1994
GS
1866/*
1867=for apidoc p||eval_pv
1868
1869Tells Perl to C<eval> the given string and return an SV* result.
1870
1871=cut
1872*/
1873
137443ea 1874SV*
864dbfa3 1875Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
1876{
1877 dSP;
1878 SV* sv = newSVpv(p, 0);
1879
924508f0 1880 PUSHMARK(SP);
864dbfa3 1881 eval_sv(sv, G_SCALAR);
137443ea
PP
1882 SvREFCNT_dec(sv);
1883
1884 SPAGAIN;
1885 sv = POPs;
1886 PUTBACK;
1887
2d8e6c8d
GS
1888 if (croak_on_error && SvTRUE(ERRSV)) {
1889 STRLEN n_a;
cea2e8a9 1890 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1891 }
137443ea
PP
1892
1893 return sv;
1894}
1895
4633a7c4
LW
1896/* Require a module. */
1897
954c1994
GS
1898/*
1899=for apidoc p||require_pv
1900
1901Tells Perl to C<require> a module.
1902
1903=cut
1904*/
1905
4633a7c4 1906void
864dbfa3 1907Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1908{
d3acc0f7
JP
1909 SV* sv;
1910 dSP;
e788e7d3 1911 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
1912 PUTBACK;
1913 sv = sv_newmortal();
4633a7c4
LW
1914 sv_setpv(sv, "require '");
1915 sv_catpv(sv, pv);
1916 sv_catpv(sv, "'");
864dbfa3 1917 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
1918 SPAGAIN;
1919 POPSTACK;
79072805
LW
1920}
1921
79072805 1922void
864dbfa3 1923Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
1924{
1925 register GV *gv;
1926
155aba94 1927 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW
1928 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1929}
1930
76e3520e 1931STATIC void
cea2e8a9 1932S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 1933{
ab821d7f
PP
1934 /* This message really ought to be max 23 lines.
1935 * Removed -h because the user already knows that opton. Others? */
fb73857a 1936
76e3520e 1937 static char *usage_msg[] = {
fb73857a
PP
1938"-0[octal] specify record separator (\\0, if no argument)",
1939"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 1940"-C enable native wide character system interfaces",
fb73857a 1941"-c check syntax only (runs BEGIN and END blocks)",
aac3bd0d
GS
1942"-d[:debugger] run program under debugger",
1943"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1944"-e 'command' one line of program (several -e's allowed, omit programfile)",
1945"-F/pattern/ split() pattern for -a switch (//'s are optional)",
1946"-i[extension] edit <> files in place (makes backup if extension supplied)",
1947"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 1948"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
1949"-[mM][-]module execute `use/no module...' before executing program",
1950"-n assume 'while (<>) { ... }' loop around program",
1951"-p assume loop like -n but print line also, like sed",
1952"-P run program through C preprocessor before compilation",
1953"-s enable rudimentary parsing for switches after programfile",
1954"-S look for programfile using PATH environment variable",
1955"-T enable tainting checks",
1956"-u dump core after parsing program",
fb73857a 1957"-U allow unsafe operations",
aac3bd0d
GS
1958"-v print version, subversion (includes VERY IMPORTANT perl info)",
1959"-V[:variable] print configuration summary (or a single Config.pm variable)",
1960"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
1961"-W enable all warnings",
1962"-X disable all warnings",
fb73857a
PP
1963"-x[directory] strip off text before #!perl line and perhaps cd to directory",
1964"\n",
1965NULL
1966};
76e3520e 1967 char **p = usage_msg;
fb73857a 1968
ab821d7f 1969 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
fb73857a
PP
1970 while (*p)
1971 printf("\n %s", *p++);
4633a7c4
LW
1972}
1973
79072805
LW
1974/* This routine handles any switches that can be given during run */
1975
1976char *
864dbfa3 1977Perl_moreswitches(pTHX_ char *s)
79072805
LW
1978{
1979 I32 numlen;
c07a80fd 1980 U32 rschar;
79072805
LW
1981
1982 switch (*s) {
1983 case '0':
a863c7d1
MB
1984 {
1985 dTHR;
dff6d3cd 1986 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 1987 SvREFCNT_dec(PL_nrs);
c07a80fd 1988 if (rschar & ~((U8)~0))
3280af22 1989 PL_nrs = &PL_sv_undef;
c07a80fd 1990 else if (!rschar && numlen >= 2)
79cb57f6 1991 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
1992 else {
1993 char ch = rschar;
79cb57f6 1994 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
1995 }
1996 return s + numlen;
a863c7d1 1997 }
46487f74
GS
1998 case 'C':
1999 PL_widesyscalls = TRUE;
2000 s++;
2001 return s;
2304df62 2002 case 'F':
3280af22
NIS
2003 PL_minus_F = TRUE;
2004 PL_splitstr = savepv(s + 1);
2304df62
AD
2005 s += strlen(s);
2006 return s;
79072805 2007 case 'a':
3280af22 2008 PL_minus_a = TRUE;
79072805
LW
2009 s++;
2010 return s;
2011 case 'c':
3280af22 2012 PL_minus_c = TRUE;
79072805
LW
2013 s++;
2014 return s;
2015 case 'd':
bbce6d69 2016 forbid_setid("-d");
4633a7c4 2017 s++;
c07a80fd 2018 if (*s == ':' || *s == '=') {
cea2e8a9 2019 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
4633a7c4 2020 s += strlen(s);
4633a7c4 2021 }
ed094faf 2022 if (!PL_perldb) {
3280af22 2023 PL_perldb = PERLDB_ALL;
a0d0e21e 2024 init_debugger();
ed094faf 2025 }
79072805
LW
2026 return s;
2027 case 'D':
0453d815 2028 {
79072805 2029#ifdef DEBUGGING
bbce6d69 2030 forbid_setid("-D");
79072805 2031 if (isALPHA(s[1])) {
8b73bbec 2032 static char debopts[] = "psltocPmfrxuLHXDS";
79072805
LW
2033 char *d;
2034
93a17b20 2035 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2036 PL_debug |= 1 << (d - debopts);
79072805
LW
2037 }
2038 else {
3280af22 2039 PL_debug = atoi(s+1);
79072805
LW
2040 for (s++; isDIGIT(*s); s++) ;
2041 }
3280af22 2042 PL_debug |= 0x80000000;
79072805 2043#else
0453d815
PM
2044 dTHR;
2045 if (ckWARN_d(WARN_DEBUGGING))
2046 Perl_warner(aTHX_ WARN_DEBUGGING,
2047 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2048 for (s++; isALNUM(*s); s++) ;
79072805
LW
2049#endif
2050 /*SUPPRESS 530*/
2051 return s;
0453d815 2052 }
4633a7c4 2053 case 'h':
3280af22 2054 usage(PL_origargv[0]);
6ad3d225 2055 PerlProc_exit(0);
79072805 2056 case 'i':
3280af22
NIS
2057 if (PL_inplace)
2058 Safefree(PL_inplace);
2059 PL_inplace = savepv(s+1);
79072805 2060 /*SUPPRESS 530*/
3280af22 2061 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2062 if (*s) {
fb73857a 2063 *s++ = '\0';
7b8d334a
GS
2064 if (*s == '-') /* Additional switches on #! line. */
2065 s++;
2066 }
fb73857a
PP
2067 return s;
2068 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2069 forbid_setid("-I");
fb73857a
PP
2070 ++s;
2071 while (*s && isSPACE(*s))
2072 ++s;
2073 if (*s) {
774d564b 2074 char *e, *p;
0df16ed7
GS
2075 p = s;
2076 /* ignore trailing spaces (possibly followed by other switches) */
2077 do {
2078 for (e = p; *e && !isSPACE(*e); e++) ;
2079 p = e;
2080 while (isSPACE(*p))
2081 p++;
2082 } while (*p && *p != '-');
2083 e = savepvn(s, e-s);
9c8a64f0 2084 incpush(e, TRUE, TRUE);
0df16ed7
GS
2085 Safefree(e);
2086 s = p;
2087 if (*s == '-')
2088 s++;
79072805
LW
2089 }
2090 else
a67e862a 2091 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2092 return s;
79072805 2093 case 'l':
3280af22 2094 PL_minus_l = TRUE;
79072805 2095 s++;
3280af22
NIS
2096 if (PL_ors)
2097 Safefree(PL_ors);
79072805 2098 if (isDIGIT(*s)) {
3280af22
NIS
2099 PL_ors = savepv("\n");
2100 PL_orslen = 1;
dff6d3cd 2101 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2102 s += numlen;
2103 }
2104 else {
a863c7d1 2105 dTHR;
3280af22
NIS
2106 if (RsPARA(PL_nrs)) {
2107 PL_ors = "\n\n";
2108 PL_orslen = 2;
c07a80fd
PP
2109 }
2110 else
3280af22
NIS
2111 PL_ors = SvPV(PL_nrs, PL_orslen);
2112 PL_ors = savepvn(PL_ors, PL_orslen);
79072805
LW
2113 }
2114 return s;
1a30305b 2115 case 'M':
bbce6d69 2116 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2117 /* FALL THROUGH */
2118 case 'm':
bbce6d69 2119 forbid_setid("-m"); /* XXX ? */
1a30305b 2120 if (*++s) {
a5f75d66 2121 char *start;
11343788 2122 SV *sv;
a5f75d66
AD
2123 char *use = "use ";
2124 /* -M-foo == 'no foo' */
2125 if (*s == '-') { use = "no "; ++s; }
11343788 2126 sv = newSVpv(use,0);
a5f75d66 2127 start = s;
1a30305b 2128 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2129 while(isALNUM(*s) || *s==':') ++s;
2130 if (*s != '=') {
11343788 2131 sv_catpv(sv, start);
c07a80fd
PP
2132 if (*(start-1) == 'm') {
2133 if (*s != '\0')
cea2e8a9 2134 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2135 sv_catpv( sv, " ()");
c07a80fd
PP
2136 }
2137 } else {
11343788
MB
2138 sv_catpvn(sv, start, s-start);
2139 sv_catpv(sv, " split(/,/,q{");
2140 sv_catpv(sv, ++s);
2141 sv_catpv(sv, "})");
c07a80fd 2142 }
1a30305b 2143 s += strlen(s);
5c831c24 2144 if (!PL_preambleav)
3280af22
NIS
2145 PL_preambleav = newAV();
2146 av_push(PL_preambleav, sv);
1a30305b
PP
2147 }
2148 else
cea2e8a9 2149 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2150 return s;
79072805 2151 case 'n':
3280af22 2152 PL_minus_n = TRUE;
79072805
LW
2153 s++;
2154 return s;
2155 case 'p':
3280af22 2156 PL_minus_p = TRUE;
79072805
LW
2157 s++;
2158 return s;
2159 case 's':
bbce6d69 2160 forbid_setid("-s");
3280af22 2161 PL_doswitches = TRUE;
79072805
LW
2162 s++;
2163 return s;
463ee0b2 2164 case 'T':
3280af22 2165 if (!PL_tainting)
cea2e8a9 2166 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2167 s++;
2168 return s;
79072805 2169 case 'u':
3280af22 2170 PL_do_undump = TRUE;
79072805
LW
2171 s++;
2172 return s;
2173 case 'U':
3280af22 2174 PL_unsafe = TRUE;
79072805
LW
2175 s++;
2176 return s;
2177 case 'v':
b22c7a20 2178 printf(Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
3cb0bbe5 2179 PL_patchlevel, ARCHNAME));
fb73857a
PP
2180#if defined(LOCAL_PATCH_COUNT)
2181 if (LOCAL_PATCH_COUNT > 0)
2182 printf("\n(with %d registered patch%s, see perl -V for more detail)",
b900a521 2183 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2184#endif
1a30305b 2185
3818b22b 2186 printf("\n\nCopyright 1987-2000, Larry Wall\n");
79072805 2187#ifdef MSDOS
fb73857a 2188 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2189#endif
2190#ifdef DJGPP
2191 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
4eb8286e 2192 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2193#endif
79072805 2194#ifdef OS2
5dd60ef7 2195 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
4eb8286e 2196 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2197#endif
79072805 2198#ifdef atarist
760ac839 2199 printf("atariST series port, ++jrb bammi@cadence.com\n");
79072805 2200#endif
a3f9223b 2201#ifdef __BEOS__
4eb8286e 2202 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2203#endif
1d84e8df 2204#ifdef MPE
4eb8286e 2205 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2206#endif
9d116dd7 2207#ifdef OEMVS
4eb8286e 2208 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2209#endif
495c5fdc 2210#ifdef __VOS__
4eb8286e 2211 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2212#endif
092bebab 2213#ifdef __OPEN_VM
4eb8286e 2214 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2215#endif
a1a0e61e 2216#ifdef POSIX_BC
4eb8286e 2217 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2218#endif
61ae2fbf 2219#ifdef __MINT__
4eb8286e 2220 printf("MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2221#endif
f83d2536
GS
2222#ifdef EPOC
2223 printf("EPOC port by Olaf Flebbe, 1999-2000\n");
2224#endif
baed7233
DL
2225#ifdef BINARY_BUILD_NOTICE
2226 BINARY_BUILD_NOTICE;
2227#endif
760ac839 2228 printf("\n\
79072805 2229Perl may be copied only under the terms of either the Artistic License or the\n\
95103687
GS
2230GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2231Complete documentation for Perl, including FAQ lists, should be found on\n\
2232this system using `man perl' or `perldoc perl'. If you have access to the\n\
2233Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2234 PerlProc_exit(0);
79072805 2235 case 'w':
599cee73
PM
2236 if (! (PL_dowarn & G_WARN_ALL_MASK))
2237 PL_dowarn |= G_WARN_ON;
2238 s++;
2239 return s;
2240 case 'W':
2241 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2242 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2243 s++;
2244 return s;
2245 case 'X':
2246 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2247 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2248 s++;
2249 return s;
a0d0e21e 2250 case '*':
79072805
LW
2251 case ' ':
2252 if (s[1] == '-') /* Additional switches on #! line. */
2253 return s+2;
2254 break;
a0d0e21e 2255 case '-':
79072805 2256 case 0:
51882d45 2257#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2258 case '\r':
2259#endif
79072805
LW
2260 case '\n':
2261 case '\t':
2262 break;
aa689395
PP
2263#ifdef ALTERNATE_SHEBANG
2264 case 'S': /* OS/2 needs -S on "extproc" line. */
2265 break;
2266#endif
a0d0e21e 2267 case 'P':
3280af22 2268 if (PL_preprocess)
a0d0e21e
LW
2269 return s+1;
2270 /* FALL THROUGH */
79072805 2271 default:
cea2e8a9 2272 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2273 }
2274 return Nullch;
2275}
2276
2277/* compliments of Tom Christiansen */
2278
2279/* unexec() can be found in the Gnu emacs distribution */
ee580363 2280/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2281
2282void
864dbfa3 2283Perl_my_unexec(pTHX)
79072805
LW
2284{
2285#ifdef UNEXEC
46fc3d4c
PP
2286 SV* prog;
2287 SV* file;
ee580363 2288 int status = 1;
79072805
LW
2289 extern int etext;
2290
ee580363 2291 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2292 sv_catpv(prog, "/perl");
6b88bc9c 2293 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2294 sv_catpv(file, ".perldump");
79072805 2295
ee580363
GS
2296 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2297 /* unexec prints msg to stderr in case of failure */
6ad3d225 2298 PerlProc_exit(status);
79072805 2299#else
a5f75d66
AD
2300# ifdef VMS
2301# include <lib$routines.h>
2302 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2303# else
79072805 2304 ABORT(); /* for use with undump */
aa689395 2305# endif
a5f75d66 2306#endif
79072805
LW
2307}
2308
cb68f92d
GS
2309/* initialize curinterp */
2310STATIC void
cea2e8a9 2311S_init_interp(pTHX)
cb68f92d
GS
2312{
2313
066ef5b5 2314#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2315#define I_REINIT \
6b88bc9c
GS
2316 STMT_START { \
2317 PL_chopset = " \n-"; \
2318 PL_copline = NOLINE; \
2319 PL_curcop = &PL_compiling;\
2320 PL_curcopdb = NULL; \
2321 PL_dbargs = 0; \
3967c732 2322 PL_dumpindent = 4; \
6b88bc9c
GS
2323 PL_laststatval = -1; \
2324 PL_laststype = OP_STAT; \
2325 PL_maxscream = -1; \
2326 PL_maxsysfd = MAXSYSFD; \
2327 PL_statname = Nullsv; \
2328 PL_tmps_floor = -1; \
2329 PL_tmps_ix = -1; \
2330 PL_op_mask = NULL; \
6b88bc9c
GS
2331 PL_laststatval = -1; \
2332 PL_laststype = OP_STAT; \
2333 PL_mess_sv = Nullsv; \
2334 PL_splitstr = " "; \
2335 PL_generation = 100; \
2336 PL_exitlist = NULL; \
2337 PL_exitlistlen = 0; \
2338 PL_regindent = 0; \
2339 PL_in_clean_objs = FALSE; \
2340 PL_in_clean_all = FALSE; \
2341 PL_profiledata = NULL; \
2342 PL_rsfp = Nullfp; \
2343 PL_rsfp_filters = Nullav; \
24d3c518 2344 PL_dirty = FALSE; \
cb68f92d 2345 } STMT_END
9666903d 2346 I_REINIT;
066ef5b5
GS
2347#else
2348# ifdef MULTIPLICITY
2349# define PERLVAR(var,type)
51371543 2350# define PERLVARA(var,n,type)
cea2e8a9 2351# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2352# if defined(USE_THREADS)
2353# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2354# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2355# else /* !USE_THREADS */
2356# define PERLVARI(var,type,init) aTHX->var = init;
2357# define PERLVARIC(var,type,init) aTHX->var = init;
2358# endif /* USE_THREADS */
cea2e8a9 2359# else
c5be433b
GS
2360# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2361# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2362# endif
066ef5b5
GS
2363# include "intrpvar.h"
2364# ifndef USE_THREADS
2365# include "thrdvar.h"
2366# endif
2367# undef PERLVAR
51371543 2368# undef PERLVARA
066ef5b5
GS
2369# undef PERLVARI
2370# undef PERLVARIC
3967c732 2371# else
066ef5b5 2372# define PERLVAR(var,type)
51371543 2373# define PERLVARA(var,n,type)
533c011a
NIS
2374# define PERLVARI(var,type,init) PL_##var = init;
2375# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2376# include "intrpvar.h"
2377# ifndef USE_THREADS
2378# include "thrdvar.h"
2379# endif
2380# undef PERLVAR
51371543 2381# undef PERLVARA
066ef5b5
GS
2382# undef PERLVARI
2383# undef PERLVARIC
2384# endif
cb68f92d
GS
2385#endif
2386
cb68f92d
GS
2387}
2388
76e3520e 2389STATIC void
cea2e8a9 2390S_init_main_stash(pTHX)
79072805 2391{
11343788 2392 dTHR;
463ee0b2 2393 GV *gv;
6e72f9df
PP
2394
2395 /* Note that strtab is a rather special HV. Assumptions are made
2396 about not iterating on it, and not adding tie magic to it.
2397 It is properly deallocated in perl_destruct() */
3280af22 2398 PL_strtab = newHV();
5f08fbcd
GS
2399#ifdef USE_THREADS
2400 MUTEX_INIT(&PL_strtab_mutex);
2401#endif
3280af22
NIS
2402 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2403 hv_ksplit(PL_strtab, 512);
6e72f9df 2404
3280af22 2405 PL_curstash = PL_defstash = newHV();
79cb57f6 2406 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2407 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2408 SvREFCNT_dec(GvHV(gv));
3280af22 2409 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2410 SvREADONLY_on(gv);
3280af22
NIS
2411 HvNAME(PL_defstash) = savepv("main");
2412 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2413 GvMULTI_on(PL_incgv);
2414 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2415 GvMULTI_on(PL_hintgv);
2416 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2417 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2418 GvMULTI_on(PL_errgv);
2419 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2420 GvMULTI_on(PL_replgv);
cea2e8a9 2421 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2422 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2423 sv_setpvn(ERRSV, "", 0);
3280af22 2424 PL_curstash = PL_defstash;
11faa288 2425 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2426 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2427 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
f180df80 2428 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2429 /* We must init $/ before switches are processed. */
864dbfa3 2430 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2431}
2432
76e3520e 2433STATIC void
cea2e8a9 2434S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2435{
0f15f207 2436 dTHR;
2a92aaa0 2437
6c4ab083 2438 *fdscript = -1;
79072805 2439
3280af22
NIS
2440 if (PL_e_script) {
2441 PL_origfilename = savepv("-e");
96436eeb 2442 }
6c4ab083
GS
2443 else {
2444 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2445 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2446
2447 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2448 char *s = scriptname + 8;
2449 *fdscript = atoi(s);
2450 while (isDIGIT(*s))
2451 s++;
2452 if (*s) {
2453 scriptname = savepv(s + 1);
3280af22
NIS
2454 Safefree(PL_origfilename);
2455 PL_origfilename = scriptname;
6c4ab083
GS
2456 }
2457 }
2458 }
2459
57843af0 2460 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2461 if (strEQ(PL_origfilename,"-"))
79072805 2462 scriptname = "";
01f988be 2463 if (*fdscript >= 0) {
3280af22 2464 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2465#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2466 if (PL_rsfp)
2467 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2468#endif
2469 }
3280af22 2470 else if (PL_preprocess) {
46fc3d4c 2471 char *cpp_cfg = CPPSTDIN;
79cb57f6 2472 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2473 SV *cmd = NEWSV(0,0);
2474
2475 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2476 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2477 sv_catpv(cpp, cpp_cfg);
79072805 2478
0df16ed7 2479 sv_catpvn(sv, "-I", 2);
fed7345c 2480 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2481
79072805 2482#ifdef MSDOS
cea2e8a9 2483 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2484sed %s -e \"/^[^#]/b\" \
2485 -e \"/^#[ ]*include[ ]/b\" \
2486 -e \"/^#[ ]*define[ ]/b\" \
2487 -e \"/^#[ ]*if[ ]/b\" \
2488 -e \"/^#[ ]*ifdef[ ]/b\" \
2489 -e \"/^#[ ]*ifndef[ ]/b\" \
2490 -e \"/^#[ ]*else/b\" \
2491 -e \"/^#[ ]*elif[ ]/b\" \
2492 -e \"/^#[ ]*undef[ ]/b\" \
2493 -e \"/^#[ ]*endif/b\" \
2494 -e \"s/^#.*//\" \
894356b3 2495 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2496 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2497#else
092bebab 2498# ifdef __OPEN_VM
cea2e8a9 2499 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2500%s %s -e '/^[^#]/b' \
2501 -e '/^#[ ]*include[ ]/b' \
2502 -e '/^#[ ]*define[ ]/b' \
2503 -e '/^#[ ]*if[ ]/b' \
2504 -e '/^#[ ]*ifdef[ ]/b' \
2505 -e '/^#[ ]*ifndef[ ]/b' \
2506 -e '/^#[ ]*else/b' \
2507 -e '/^#[ ]*elif[ ]/b' \
2508 -e '/^#[ ]*undef[ ]/b' \
2509 -e '/^#[ ]*endif/b' \
2510 -e 's/^[ ]*#.*//' \
894356b3 2511 %s | %"SVf" %"SVf" %s",
092bebab 2512# else
cea2e8a9 2513 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2514%s %s -e '/^[^#]/b' \
2515 -e '/^#[ ]*include[ ]/b' \
2516 -e '/^#[ ]*define[ ]/b' \
2517 -e '/^#[ ]*if[ ]/b' \
2518 -e '/^#[ ]*ifdef[ ]/b' \
2519 -e '/^#[ ]*ifndef[ ]/b' \
2520 -e '/^#[ ]*else/b' \
2521 -e '/^#[ ]*elif[ ]/b' \
2522 -e '/^#[ ]*undef[ ]/b' \
2523 -e '/^#[ ]*endif/b' \
2524 -e 's/^[ ]*#.*//' \
894356b3 2525 %s | %"SVf" -C %"SVf" %s",
092bebab 2526# endif
79072805
LW
2527#ifdef LOC_SED
2528 LOC_SED,
2529#else
2530 "sed",
2531#endif
3280af22 2532 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2533#endif
46fc3d4c 2534 scriptname, cpp, sv, CPPMINUS);
3280af22 2535 PL_doextract = FALSE;
79072805 2536#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2537 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2538#ifdef HAS_SETEUID
b28d0864 2539 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2540#else
2541#ifdef HAS_SETREUID
b28d0864 2542 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2543#else
2544#ifdef HAS_SETRESUID
b28d0864 2545 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2546#else
b28d0864 2547 PerlProc_setuid(PL_uid);
79072805
LW
2548#endif
2549#endif
85e6fe83 2550#endif
b28d0864 2551 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2552 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2553 }
2554#endif /* IAMSUID */
3280af22 2555 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2556 SvREFCNT_dec(cmd);
2557 SvREFCNT_dec(cpp);
79072805
LW
2558 }
2559 else if (!*scriptname) {
bbce6d69 2560 forbid_setid("program input from stdin");
3280af22 2561 PL_rsfp = PerlIO_stdin();
79072805 2562 }
96436eeb 2563 else {
3280af22 2564 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2565#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2566 if (PL_rsfp)
2567 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2568#endif
2569 }
3280af22 2570 if (!PL_rsfp) {
13281fa4 2571#ifdef DOSUID
a687059c 2572#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2573 if (PL_euid &&
cc49e20b 2574 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2575 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2576 {
46fc3d4c 2577 /* try again */
a7cb1f99 2578 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2579 (int)PERL_REVISION, (int)PERL_VERSION,
2580 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2581 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2582 }
2583#endif
2584#endif
cea2e8a9 2585 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2586 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2587 }
79072805 2588}
8d063cd8 2589
7b89560d
JH
2590/* Mention
2591 * I_SYSSTATVFS HAS_FSTATVFS
2592 * I_SYSMOUNT
c890dc6c 2593 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2594 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2595 * here so that metaconfig picks them up. */
2596
104d25b7 2597#ifdef IAMSUID
864dbfa3 2598STATIC int
e688b231 2599S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2600{
0545a864
JH
2601 int check_okay = 0; /* able to do all the required sys/libcalls */
2602 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2603/*
ad27e871 2604 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2605 * fstatvfs() is UNIX98.
0545a864 2606 * fstatfs() is 4.3 BSD.
ad27e871 2607 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2608 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2609 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2610 */
2611
2612# ifdef HAS_FSTATVFS
2613 struct statvfs stfs;
2614 check_okay = fstatvfs(fd, &stfs) == 0;
2615 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2616# else
0545a864 2617# ifdef PERL_MOUNT_NOSUID
ad27e871
JH
2618# if defined(HAS_FSTATFS) && \
2619 defined(HAS_STRUCT_STATFS) && \
2620 defined(HAS_STRUCT_STATFS_F_FLAGS)
e688b231 2621 struct statfs stfs;
104d25b7 2622 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2623 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
0545a864
JH
2624# else
2625# if defined(HAS_FSTAT) && \
2626 defined(HAS_USTAT) && \
ad27e871 2627 defined(HAS_GETMNT) && \
65d1664e 2628 defined(HAS_STRUCT_FS_DATA) && \
ad27e871 2629 defined(NOSTAT_ONE)
0545a864
JH
2630 struct stat fdst;
2631 if (fstat(fd, &fdst) == 0) {
2632 struct ustat us;
2633 if (ustat(fdst.st_dev, &us) == 0) {
2634 struct fs_data fsd;
ad27e871
JH
2635 /* NOSTAT_ONE here because we're not examining fields which
2636 * vary between that case and STAT_ONE. */
2637 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
0545a864
JH
2638 size_t cmplen = sizeof(us.f_fname);
2639 if (sizeof(fsd.fd_req.path) < cmplen)
2640 cmplen = sizeof(fsd.fd_req.path);
2641 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2642 fdst.st_dev == fsd.fd_req.dev) {
2643 check_okay = 1;
2644 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2645 }
2646 }
2647 }
2648 }
2649 }
ad27e871
JH
2650# endif /* fstat+ustat+getmnt */
2651# endif /* fstatfs */
104d25b7 2652# else
0545a864
JH
2653# if defined(HAS_GETMNTENT) && \
2654 defined(HAS_HASMNTOPT) && \
2655 defined(MNTOPT_NOSUID)
104d25b7
JH
2656 FILE *mtab = fopen("/etc/mtab", "r");
2657 struct mntent *entry;
2658 struct stat stb, fsb;
2659
2660 if (mtab && (fstat(fd, &stb) == 0)) {
e688b231
JH
2661 while (entry = getmntent(mtab)) {
2662 if (stat(entry->mnt_dir, &fsb) == 0
2663 && fsb.st_dev == stb.st_dev)
104d25b7
JH
2664 {
2665 /* found the filesystem */
2666 check_okay = 1;
2667 if (hasmntopt(entry, MNTOPT_NOSUID))
2668 on_nosuid = 1;
2669 break;
e688b231 2670 } /* A single fs may well fail its stat(). */
104d25b7
JH
2671 }
2672 }
2673 if (mtab)
2674 fclose(mtab);
ad27e871 2675# endif /* getmntent+hasmntopt */
0545a864 2676# endif /* PERL_MOUNT_NOSUID: fstatfs or fstat+ustat+statfs */
e688b231 2677# endif /* statvfs */
0545a864 2678
104d25b7 2679 if (!check_okay)
0545a864 2680 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2681 return on_nosuid;
2682}
2683#endif /* IAMSUID */
2684
76e3520e 2685STATIC void
cea2e8a9 2686S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2687{
155aba94 2688#ifdef IAMSUID
96436eeb 2689 int which;
155aba94 2690#endif
96436eeb 2691
13281fa4
LW
2692 /* do we need to emulate setuid on scripts? */
2693
2694 /* This code is for those BSD systems that have setuid #! scripts disabled
2695 * in the kernel because of a security problem. Merely defining DOSUID
2696 * in perl will not fix that problem, but if you have disabled setuid
2697 * scripts in the kernel, this will attempt to emulate setuid and setgid
2698 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2699 * root version must be called suidperl or sperlN.NNN. If regular perl
2700 * discovers that it has opened a setuid script, it calls suidperl with
2701 * the same argv that it had. If suidperl finds that the script it has
2702 * just opened is NOT setuid root, it sets the effective uid back to the
2703 * uid. We don't just make perl setuid root because that loses the
2704 * effective uid we had before invoking perl, if it was different from the
2705 * uid.
13281fa4
LW
2706 *
2707 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2708 * be defined in suidperl only. suidperl must be setuid root. The
2709 * Configure script will set this up for you if you want it.
2710 */
a687059c 2711
13281fa4 2712#ifdef DOSUID
ea0efc06 2713 dTHR;
6e72f9df 2714 char *s, *s2;
a0d0e21e 2715
b28d0864 2716 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2717 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2718 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2719 I32 len;
2d8e6c8d 2720 STRLEN n_a;
13281fa4 2721
a687059c 2722#ifdef IAMSUID
fe14fcc3 2723#ifndef HAS_SETREUID
a687059c
LW
2724 /* On this access check to make sure the directories are readable,
2725 * there is actually a small window that the user could use to make
2726 * filename point to an accessible directory. So there is a faint
2727 * chance that someone could execute a setuid script down in a
2728 * non-accessible directory. I don't know what to do about that.
2729 * But I don't think it's too important. The manual lies when
2730 * it says access() is useful in setuid programs.
2731 */
cc49e20b 2732 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2733 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2734#else
2735 /* If we can swap euid and uid, then we can determine access rights
2736 * with a simple stat of the file, and then compare device and
2737 * inode to make sure we did stat() on the same file we opened.
2738 * Then we just have to make sure he or she can execute it.
2739 */
2740 {
2741 struct stat tmpstatbuf;
2742
85e6fe83
LW
2743 if (
2744#ifdef HAS_SETREUID
b28d0864 2745 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2746#else
2747# if HAS_SETRESUID
b28d0864 2748 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2749# endif
85e6fe83 2750#endif
b28d0864 2751 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2752 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2753 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2754 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2755#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2756 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2757 Perl_croak(aTHX_ "Permission denied");
104d25b7 2758#endif
b28d0864
NIS
2759 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2760 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2761 (void)PerlIO_close(PL_rsfp);
2762 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2763 PerlIO_printf(PL_rsfp,
785fb66b
JH
2764"User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2765(Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2766 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
b28d0864 2767 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
cc49e20b 2768 CopFILE(PL_curcop),
785fb66b 2769 PL_statbuf.st_uid, PL_statbuf.st_gid);
b28d0864 2770 (void)PerlProc_pclose(PL_rsfp);
a687059c 2771 }
cea2e8a9 2772 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2773 }
85e6fe83
LW
2774 if (
2775#ifdef HAS_SETREUID
b28d0864 2776 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2777#else
2778# if defined(HAS_SETRESUID)
b28d0864 2779 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2780# endif
85e6fe83 2781#endif
b28d0864 2782 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2783 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2784 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2785 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2786 }
fe14fcc3 2787#endif /* HAS_SETREUID */
a687059c
LW
2788#endif /* IAMSUID */
2789
b28d0864 2790 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2791 Perl_croak(aTHX_ "Permission denied");
b28d0864 2792 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2793 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2794 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2795 CopLINE_inc(PL_curcop);
6b88bc9c 2796 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2797 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2798 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2799 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2800 if (*s == ' ') s++;
45d8adaa 2801 while (!isSPACE(*s)) s++;
2d8e6c8d 2802 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2803 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2804 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2805 Perl_croak(aTHX_ "Not a perl script");
a687059c 2806 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2807 /*
2808 * #! arg must be what we saw above. They can invoke it by
2809 * mentioning suidperl explicitly, but they may not add any strange
2810 * arguments beyond what #! says if they do invoke suidperl that way.
2811 */
2812 len = strlen(validarg);
2813 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2814 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2815 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
2816
2817#ifndef IAMSUID
b28d0864
NIS
2818 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2819 PL_euid == PL_statbuf.st_uid)
2820 if (!PL_do_undump)
cea2e8a9 2821 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2822FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2823#endif /* IAMSUID */
13281fa4 2824
b28d0864
NIS
2825 if (PL_euid) { /* oops, we're not the setuid root perl */
2826 (void)PerlIO_close(PL_rsfp);
13281fa4 2827#ifndef IAMSUID
46fc3d4c 2828 /* try again */
a7cb1f99 2829 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2830 (int)PERL_REVISION, (int)PERL_VERSION,
2831 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2832#endif
cea2e8a9 2833 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2834 }
2835
b28d0864 2836 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2837#ifdef HAS_SETEGID
b28d0864 2838 (void)setegid(PL_statbuf.st_gid);
a687059c 2839#else
fe14fcc3 2840#ifdef HAS_SETREGID
b28d0864 2841 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
2842#else
2843#ifdef HAS_SETRESGID
b28d0864 2844 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2845#else
b28d0864 2846 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
2847#endif
2848#endif
85e6fe83 2849#endif
b28d0864 2850 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2851 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2852 }
b28d0864
NIS
2853 if (PL_statbuf.st_mode & S_ISUID) {
2854 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2855#ifdef HAS_SETEUID
b28d0864 2856 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2857#else
fe14fcc3 2858#ifdef HAS_SETREUID
b28d0864 2859 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
2860#else
2861#ifdef HAS_SETRESUID
b28d0864 2862 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2863#else
b28d0864 2864 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
2865#endif
2866#endif
85e6fe83 2867#endif
b28d0864 2868 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2869 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2870 }
b28d0864 2871 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2872#ifdef HAS_SETEUID
b28d0864 2873 (void)seteuid((Uid_t)PL_uid);
a687059c 2874#else
fe14fcc3 2875#ifdef HAS_SETREUID
b28d0864 2876 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2877#else
85e6fe83 2878#ifdef HAS_SETRESUID
b28d0864 2879 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2880#else
b28d0864 2881 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2882#endif
a687059c
LW
2883#endif
2884#endif
b28d0864 2885 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2886 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2887 }
748a9306 2888 init_ids();
b28d0864 2889 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2890 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
2891 }
2892#ifdef IAMSUID
6b88bc9c 2893 else if (PL_preprocess)
cea2e8a9 2894 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2895 else if (fdscript >= 0)
cea2e8a9 2896 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 2897 else
cea2e8a9 2898 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
2899
2900 /* We absolutely must clear out any saved ids here, so we */
2901 /* exec the real perl, substituting fd script for scriptname. */
2902 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
2903 PerlIO_rewind(PL_rsfp);
2904 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
2905 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2906 if (!PL_origargv[which])
cea2e8a9
GS
2907 Perl_croak(aTHX_ "Permission denied");
2908 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 2909 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 2910#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 2911 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 2912#endif
a7cb1f99 2913 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2914 (int)PERL_REVISION, (int)PERL_VERSION,
2915 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 2916 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 2917#endif /* IAMSUID */
a687059c 2918#else /* !DOSUID */
3280af22 2919 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 2920#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
96827780 2921 dTHR;
b28d0864
NIS
2922 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2923 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 2924 ||
b28d0864 2925 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 2926 )
b28d0864 2927 if (!PL_do_undump)
cea2e8a9 2928 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2929FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2930#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2931 /* not set-id, must be wrapped */
a687059c 2932 }
13281fa4 2933#endif /* DOSUID */
79072805 2934}
13281fa4 2935
76e3520e 2936STATIC void
cea2e8a9 2937S_find_beginning(pTHX)
79072805 2938{
6e72f9df 2939 register char *s, *s2;
33b78306
LW
2940
2941 /* skip forward in input to the real script? */
2942
bbce6d69 2943 forbid_setid("-x");
3280af22
NIS
2944 while (PL_doextract) {
2945 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 2946 Perl_croak(aTHX_ "No Perl script found in input\n");
6e72f9df 2947 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS
2948 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2949 PL_doextract = FALSE;
6e72f9df
PP
2950 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2951 s2 = s;
2952 while (*s == ' ' || *s == '\t') s++;
2953 if (*s++ == '-') {
2954 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2955 if (strnEQ(s2-4,"perl",4))
2956 /*SUPPRESS 530*/
155aba94
GS
2957 while ((s = moreswitches(s)))
2958 ;
33b78306 2959 }
83025b21
LW
2960 }
2961 }
2962}
2963
afe37c7d 2964
76e3520e 2965STATIC void
cea2e8a9 2966S_init_ids(pTHX)
352d5a3a 2967{
d8eceb89
JH
2968 PL_uid = PerlProc_getuid();
2969 PL_euid = PerlProc_geteuid();
2970 PL_gid = PerlProc_getgid();
2971 PL_egid = PerlProc_getegid();
748a9306 2972#ifdef VMS
b28d0864
NIS
2973 PL_uid |= PL_gid << 16;
2974 PL_euid |= PL_egid << 16;
748a9306 2975#endif
3280af22 2976 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 2977}
79072805 2978
76e3520e 2979STATIC void
cea2e8a9 2980S_forbid_setid(pTHX_ char *s)
bbce6d69 2981{
3280af22 2982 if (PL_euid != PL_uid)
cea2e8a9 2983 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 2984 if (PL_egid != PL_gid)
cea2e8a9 2985 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
2986}
2987
1ee4443e
IZ
2988void
2989Perl_init_debugger(pTHX)
748a9306 2990{
11343788 2991 dTHR;
1ee4443e
IZ
2992 HV *ostash = PL_curstash;
2993
3280af22
NIS
2994 PL_curstash = PL_debstash;
2995 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2996 AvREAL_off(PL_dbargs);
2997 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2998 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2999 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3000 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22
NIS
3001 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3002 sv_setiv(PL_DBsingle, 0);
3003 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3004 sv_setiv(PL_DBtrace, 0);
3005 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3006 sv_setiv(PL_DBsignal, 0);
1ee4443e 3007 PL_curstash = ostash;
352d5a3a
LW
3008}
3009
2ce36478
SM
3010#ifndef STRESS_REALLOC
3011#define REASONABLE(size) (size)
3012#else
3013#define REASONABLE(size) (1) /* unreasonable */
3014#endif
3015
11343788 3016void
cea2e8a9 3017Perl_init_stacks(pTHX)
79072805 3018{
e336de0d 3019 /* start with 128-item stack and 8K cxstack */
3280af22 3020 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3021 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3022 PL_curstackinfo->si_type = PERLSI_MAIN;
3023 PL_curstack = PL_curstackinfo->si_stack;
3024 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3025
3280af22
NIS
3026 PL_stack_base = AvARRAY(PL_curstack);
3027 PL_stack_sp = PL_stack_base;
3028 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3029
3280af22
NIS
3030 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3031 PL_tmps_floor = -1;
3032 PL_tmps_ix = -1;
3033 PL_tmps_max = REASONABLE(128);
8990e307 3034
3280af22
NIS
3035 New(54,PL_markstack,REASONABLE(32),I32);
3036 PL_markstack_ptr = PL_markstack;
3037 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3038
ce2f7c3b 3039 SET_MARK_OFFSET;
e336de0d 3040
3280af22
NIS
3041 New(54,PL_scopestack,REASONABLE(32),I32);
3042 PL_scopestack_ix = 0;
3043 PL_scopestack_max = REASONABLE(32);
79072805 3044
3280af22
NIS
3045 New(54,PL_savestack,REASONABLE(128),ANY);
3046 PL_savestack_ix = 0;
3047 PL_savestack_max = REASONABLE(128);
79072805 3048
3280af22
NIS
3049 New(54,PL_retstack,REASONABLE(16),OP*);
3050 PL_retstack_ix = 0;
3051 PL_retstack_max = REASONABLE(16);
378cc40b 3052}
33b78306 3053
2ce36478
SM
3054#undef REASONABLE
3055
76e3520e 3056STATIC void
cea2e8a9 3057S_nuke_stacks(pTHX)
6e72f9df 3058{
e858de61 3059 dTHR;
3280af22
NIS
3060 while (PL_curstackinfo->si_next)
3061 PL_curstackinfo = PL_curstackinfo->si_next;
3062 while (PL_curstackinfo) {
3063 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3064 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3065 Safefree(PL_curstackinfo->si_cxstack);
3066 Safefree(PL_curstackinfo);
3067 PL_curstackinfo = p;
e336de0d 3068 }
3280af22
NIS
3069 Safefree(PL_tmps_stack);
3070 Safefree(PL_markstack);
3071 Safefree(PL_scopestack);
3072 Safefree(PL_savestack);
3073 Safefree(PL_retstack);
378cc40b 3074}
33b78306 3075
76e3520e 3076#ifndef PERL_OBJECT
760ac839 3077static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3078#endif
7aa04957 3079
76e3520e 3080STATIC void
cea2e8a9 3081S_init_lexer(pTHX)
8990e307 3082{
76e3520e
GS
3083#ifdef PERL_OBJECT
3084 PerlIO *tmpfp;
3085#endif
3280af22
NIS
3086 tmpfp = PL_rsfp;
3087 PL_rsfp = Nullfp;
3088 lex_start(PL_linestr);
3089 PL_rsfp = tmpfp;
79cb57f6 3090 PL_subname = newSVpvn("main",4);
8990e307
LW
3091}
3092
76e3520e 3093STATIC void
cea2e8a9 3094S_init_predump_symbols(pTHX)
45d8adaa 3095{
11343788 3096 dTHR;
93a17b20 3097 GV *tmpgv;
af8c498a 3098 IO *io;
79072805 3099
864dbfa3 3100 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3101 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3102 GvMULTI_on(PL_stdingv);
af8c498a
GS
3103 io = GvIOp(PL_stdingv);
3104 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3105 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3106 GvMULTI_on(tmpgv);
af8c498a 3107 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3108
85e6fe83 3109 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3110 GvMULTI_on(tmpgv);
af8c498a
GS
3111 io = GvIOp(tmpgv);
3112 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3113 setdefout(tmpgv);
adbc6bb1 3114 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3115 GvMULTI_on(tmpgv);
af8c498a 3116 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3117
bf49b057
GS
3118 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3119 GvMULTI_on(PL_stderrgv);
3120 io = GvIOp(PL_stderrgv);
af8c498a 3121 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3122 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3123 GvMULTI_on(tmpgv);
af8c498a 3124 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3125
3280af22 3126 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3127
3280af22
NIS
3128 if (!PL_osname)
3129 PL_osname = savepv(OSNAME);
79072805 3130}
33b78306 3131
76e3520e 3132STATIC void
cea2e8a9 3133S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3134{
a863c7d1 3135 dTHR;
79072805
LW
3136 char *s;
3137 SV *sv;
3138 GV* tmpgv;
fe14fcc3 3139
79072805 3140 argc--,argv++; /* skip name of script */
3280af22 3141 if (PL_doswitches) {
79072805
LW
3142 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3143 if (!argv[0][1])
3144 break;
379d538a 3145 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3146 argc--,argv++;
3147 break;
3148 }
155aba94 3149 if ((s = strchr(argv[0], '='))) {
79072805 3150 *s++ = '\0';
85e6fe83 3151 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3152 }
3153 else
85e6fe83 3154 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3155 }
79072805 3156 }
3280af22
NIS
3157 PL_toptarget = NEWSV(0,0);
3158 sv_upgrade(PL_toptarget, SVt_PVFM);
3159 sv_setpvn(PL_toptarget, "", 0);
3160 PL_bodytarget = NEWSV(0,0);
3161 sv_upgrade(PL_bodytarget, SVt_PVFM);
3162 sv_setpvn(PL_bodytarget, "", 0);
3163 PL_formtarget = PL_bodytarget;
79072805 3164
bbce6d69 3165 TAINT;
155aba94 3166 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3280af22 3167 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805
LW
3168 magicname("0", "0", 1);
3169 }
155aba94 3170 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f
IZ
3171#ifdef OS2
3172 sv_setpv(GvSV(tmpgv), os2_execname());
3173#else
3280af22 3174 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3175#endif
155aba94 3176 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3177 GvMULTI_on(PL_argvgv);
3178 (void)gv_AVadd(PL_argvgv);
3179 av_clear(GvAVn(PL_argvgv));
79072805 3180 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3181 SV *sv = newSVpv(argv[0],0);
3182 av_push(GvAVn(PL_argvgv),sv);
3183 if (PL_widesyscalls)
3184 sv_utf8_upgrade(sv);
79072805
LW
3185 }
3186 }
155aba94 3187 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3188 HV *hv;
3280af22
NIS
3189 GvMULTI_on(PL_envgv);
3190 hv = GvHVn(PL_envgv);
3191 hv_magic(hv, PL_envgv, 'E');
4d2c4e07 3192#if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
4633a7c4
LW
3193 /* Note that if the supplied env parameter is actually a copy
3194 of the global environ then it may now point to free'd memory
3195 if the environment has been modified since. To avoid this
3196 problem we treat env==NULL as meaning 'use the default'
3197 */
3198 if (!env)
3199 env = environ;
5aabfad6 3200 if (env != environ)
79072805
LW
3201 environ[0] = Nullch;
3202 for (; *env; env++) {
93a17b20 3203 if (!(s = strchr(*env,'=')))
79072805
LW
3204 continue;
3205 *s++ = '\0';
60ce6247 3206#if defined(MSDOS)
137443ea
PP
3207 (void)strupr(*env);
3208#endif
79072805
LW
3209 sv = newSVpv(s--,0);
3210 (void)hv_store(hv, *env, s - *env, sv, 0);
3211 *s = '=';
3e3baf6d
TB
3212#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3213 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 3214 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 3215#endif
fe14fcc3 3216 }
4550b24a
PP
3217#endif
3218#ifdef DYNAMIC_ENV_FETCH
3219 HvNAME(hv) = savepv(ENV_HV_NAME);
3220#endif
79072805 3221 }
bbce6d69 3222 TAINT_NOT;
155aba94 3223 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3224 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3225}
34de22dd 3226
76e3520e 3227STATIC void
cea2e8a9 3228S_init_perllib(pTHX)
34de22dd 3229{
85e6fe83 3230 char *s;
3280af22 3231 if (!PL_tainting) {
552a7a9b 3232#ifndef VMS
76e3520e 3233 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3234 if (s)
9c8a64f0 3235 incpush(s, TRUE, TRUE);
85e6fe83 3236 else
9c8a64f0 3237 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b
PP
3238#else /* VMS */
3239 /* Treat PERL5?LIB as a possible search list logical name -- the
3240 * "natural" VMS idiom for a Unix path string. We allow each
3241 * element to be a set of |-separated directories for compatibility.
3242 */
3243 char buf[256];
3244 int idx = 0;
3245 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3246 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3247 else
9c8a64f0 3248 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3249#endif /* VMS */
85e6fe83 3250 }
34de22dd 3251
c90c0ff4 3252/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3253 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3254*/
4633a7c4 3255#ifdef APPLLIB_EXP
9c8a64f0 3256 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3257#endif
4633a7c4 3258
fed7345c 3259#ifdef ARCHLIB_EXP
9c8a64f0 3260 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3261#endif
fed7345c 3262#ifndef PRIVLIB_EXP
65f19062 3263# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3264#endif
00dc2f4f 3265#if defined(WIN32)
9c8a64f0 3266 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3267#else
9c8a64f0 3268 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3269#endif
4633a7c4 3270
65f19062 3271#ifdef SITEARCH_EXP
3b290362
GS
3272 /* sitearch is always relative to sitelib on Windows for
3273 * DLL-based path intuition to work correctly */
3274# if !defined(WIN32)
9c8a64f0 3275 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS
3276# endif
3277#endif
3278
4633a7c4 3279#ifdef SITELIB_EXP
65f19062 3280# if defined(WIN32)
9c8a64f0 3281 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3282# else
9c8a64f0 3283 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS
3284# endif
3285#endif
189d1e8d 3286
65f19062 3287#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3288 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3289#endif
65f19062
GS
3290
3291#ifdef PERL_VENDORARCH_EXP
4ea817c6 3292 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS
3293 * DLL-based path intuition to work correctly */
3294# if !defined(WIN32)
9c8a64f0 3295 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3296# endif
4b03c463 3297#endif
65f19062
GS
3298
3299#ifdef PERL_VENDORLIB_EXP
3300# if defined(WIN32)
9c8a64f0 3301 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3302# else
9c8a64f0 3303 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3304# endif
a3635516 3305#endif
65f19062
GS
3306
3307#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3308 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3309#endif
65f19062 3310
3280af22 3311 if (!PL_tainting)
9c8a64f0 3312 incpush(".", FALSE, FALSE);
774d564b
PP
3313}
3314
3315#if defined(DOSISH)
3316# define PERLLIB_SEP ';'
3317#else
3318# if defined(VMS)
3319# define PERLLIB_SEP '|'
3320# else
3321# define PERLLIB_SEP ':'
3322# endif
3323#endif
3324#ifndef PERLLIB_MANGLE
3325# define PERLLIB_MANGLE(s,n) (s)
3326#endif
3327
76e3520e 3328STATIC void
9c8a64f0 3329S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b
PP
3330{
3331 SV *subdir = Nullsv;
774d564b 3332
3b290362 3333 if (!p || !*p)
774d564b
PP
3334 return;
3335
9c8a64f0 3336 if (addsubdirs || addoldvers) {
00db4c45 3337 subdir = sv_newmortal();
774d564b
PP
3338 }
3339
3340 /* Break at all separators */
3341 while (p && *p) {
8c52afec 3342 SV *libdir = NEWSV(55,0);
774d564b
PP
3343 char *s;
3344
3345 /* skip any consecutive separators */
3346 while ( *p == PERLLIB_SEP ) {
3347 /* Uncomment the next line for PATH semantics */
79cb57f6 3348 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b
PP
3349 p++;
3350 }
3351
3352 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3353 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3354 (STRLEN)(s - p));
3355 p = s + 1;
3356 }
3357 else {
3358 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3359 p = Nullch; /* break out */
3360 }
3361
3362 /*
3363 * BEFORE pushing libdir onto @INC we may first push version- and
3364 * archname-specific sub-directories.
3365 */
9c8a64f0 3366 if (addsubdirs || addoldvers) {
29d82f8d 3367#ifdef PERL_INC_VERSION_LIST
8353b874
GS
3368 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3369 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS
3370 const char **incver;
3371#endif
774d564b 3372 struct stat tmpstatbuf;
aa689395
PP
3373#ifdef VMS
3374 char *unix;
3375 STRLEN len;
774d564b 3376
2d8e6c8d 3377 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395
PP
3378 len = strlen(unix);
3379 while (unix[len-1] == '/') len--; /* Cosmetic */
3380 sv_usepvn(libdir,unix,len);
3381 }
3382 else
bf49b057 3383 PerlIO_printf(Perl_error_log,
aa689395 3384 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3385 SvPV(libdir,len));
aa689395 3386#endif
9c8a64f0
GS
3387 if (addsubdirs) {
3388 /* .../version/archname if -d .../version/archname */
3389 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s",
3390 libdir,
3391 (int)PERL_REVISION, (int)PERL_VERSION,
3392 (int)PERL_SUBVERSION, ARCHNAME);
3393 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3394 S_ISDIR(tmpstatbuf.st_mode))
3395 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3396
9c8a64f0
GS
3397 /* .../version if -d .../version */
3398 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3399 (int)PERL_REVISION, (int)PERL_VERSION,
3400 (int)PERL_SUBVERSION);
3401 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3402 S_ISDIR(tmpstatbuf.st_mode))
3403 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3404
3405 /* .../archname if -d .../archname */
3406 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
29d82f8d
GS
3407 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3408 S_ISDIR(tmpstatbuf.st_mode))
3409 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3410 }
9c8a64f0 3411
9c8a64f0 3412#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3413 if (addoldvers) {
9c8a64f0
GS
3414 for (incver = incverlist; *incver; incver++) {
3415 /* .../xxx if -d .../xxx */
3416 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3417 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3418 S_ISDIR(tmpstatbuf.st_mode))
3419 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3420 }
3421 }
29d82f8d 3422#endif
774d564b
PP
3423 }
3424
3425 /* finally push this lib directory on the end of @INC */
3280af22 3426 av_push(GvAVn(PL_incgv), libdir);
774d564b 3427 }
34de22dd 3428}
93a17b20 3429
199100c8 3430#ifdef USE_THREADS
76e3520e 3431STATIC struct perl_thread *
cea2e8a9 3432S_init_main_thread(pTHX)
199100c8 3433{
c5be433b 3434#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3435 struct perl_thread *thr;
cea2e8a9 3436#endif
199100c8
MB
3437 XPV *xpv;
3438
52e1cb5e 3439 Newz(53, thr, 1, struct perl_thread);
533c011a 3440 PL_curcop = &PL_compiling;
c5be433b 3441 thr->interp = PERL_GET_INTERP;
199100c8 3442 thr->cvcache = newHV();
54b9620d 3443 thr->threadsv = newAV();
940cb80d 3444 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB
3445 thr->specific = newAV();
3446 thr->flags = THRf_R_JOINABLE;
3447 MUTEX_INIT(&thr->mutex);
3448 /* Handcraft thrsv similarly to mess_sv */
533c011a 3449 New(53, PL_thrsv, 1, SV);
199100c8 3450 Newz(53, xpv, 1, XPV);
533c011a
NIS
3451 SvFLAGS(PL_thrsv) = SVt_PV;
3452 SvANY(PL_thrsv) = (void*)xpv;
3453 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3454 SvPVX(PL_thrsv) = (char*)thr;
3455 SvCUR_set(PL_thrsv, sizeof(thr));
3456 SvLEN_set(PL_thrsv, sizeof(thr));
3457 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3458 thr->oursv = PL_thrsv;
3459 PL_chopset = " \n-";
3967c732