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Re: typos in pods
[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 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 182 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 185
199100c8 186 thr = init_main_thread();
11343788
MB		 187#endif /* USE_THREADS */
188
14dd3ad8 189#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 191#endif
312caa8e 192
2aea9f8a
GS		 193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194
3280af22
NIS		 195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 197
3280af22 198 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 199 /* set read-only and try to insure than we wont see REFCNT==0
200 very often */
201
3280af22
NIS		 202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 204
3280af22
NIS		 205 sv_setpv(&PL_sv_no,PL_No);
206 SvNV(&PL_sv_no);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 209
3280af22
NIS		 210 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvNV(&PL_sv_yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 214 }
79072805 215
76e3520e
GS		 216#ifdef PERL_OBJECT
217 /* TODO: */
6b88bc9c 218 /* PL_sighandlerp = sighandler; */
76e3520e 219#else
cea2e8a9 220 PL_sighandlerp = Perl_sighandler;
76e3520e 221#endif
3280af22 222 PL_pidstatus = newHV();
44a8e56a 223
79072805
LW		 224#ifdef MSDOS
225 /*
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
228 * filehandles.
229 */
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
232#endif
233 }
234
79cb57f6 235 PL_nrs = newSVpvn("\n", 1);
3280af22 236 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 237
cea2e8a9 238 init_stacks();
79072805 239
748a9306 240 init_ids();
3280af22 241 PL_lex_state = LEX_NOTPARSING;
a5f75d66 242
312caa8e 243 JMPENV_BOOTSTRAP;
f86702cc 244 STATUS_ALL_SUCCESS;
245
0672f40e 246 init_i18nl10n(1);
36477c24 247 SET_NUMERIC_STANDARD();
0b5b802d 248
a7cb1f99
GS		 249 {
250 U8 *s;
251 PL_patchlevel = NEWSV(0,4);
155aba94 252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99
GS		 255 s = (U8*)SvPVX(PL_patchlevel);
256 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS		 267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 275#endif
276
52853b95
GS		 277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS		 283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
8990e307 286
8990e307 287 ENTER;
79072805
LW		 288}
289
954c1994
GS		 290/*
291=for apidoc perl_destruct
292
293Shuts down a Perl interpreter. See L<perlembed>.
294
295=cut
296*/
297
79072805 298void
0cb96387 299perl_destruct(pTHXx)
79072805 300{
11343788 301 dTHR;
748a9306 302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
8990e307 303 I32 last_sv_count;
a0d0e21e 304 HV *hv;
1f2bfc8a 305#ifdef USE_THREADS
33f46ff6 306 Thread t;
cea2e8a9 307 dTHX;
1f2bfc8a 308#endif /* USE_THREADS */
8990e307 309
7766f137
GS		 310 /* wait for all pseudo-forked children to finish */
311 PERL_WAIT_FOR_CHILDREN;
312
11343788 313#ifdef USE_THREADS
0f15f207 314#ifndef FAKE_THREADS
8023c3ce
MB		 315 /* Pass 1 on any remaining threads: detach joinables, join zombies */
316 retry_cleanup:
533c011a 317 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 318 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 319 "perl_destruct: waiting for %d threads...\n",
533c011a 320 PL_nthreads - 1));
33f46ff6 321 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 322 MUTEX_LOCK(&t->mutex);
323 switch (ThrSTATE(t)) {
324 AV *av;
c7848ba1 325 case THRf_ZOMBIE:
bf49b057 326 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 327 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 328 ThrSETSTATE(t, THRf_DEAD);
329 MUTEX_UNLOCK(&t->mutex);
533c011a 330 PL_nthreads--;
8023c3ce
MB		 331 /*
332 * The SvREFCNT_dec below may take a long time (e.g. av
333 * may contain an object scalar whose destructor gets
334 * called) so we have to unlock threads_mutex and start
335 * all over again.
336 */
533c011a 337 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 338 JOIN(t, &av);
605e5515 339 SvREFCNT_dec((SV*)av);
bf49b057 340 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 341 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 342 goto retry_cleanup;
c7848ba1 343 case THRf_R_JOINABLE:
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 345 "perl_destruct: detaching thread %p\n", t));
346 ThrSETSTATE(t, THRf_R_DETACHED);
347 /*
348 * We unlock threads_mutex and t->mutex in the opposite order
349 * from which we locked them just so that DETACH won't
350 * deadlock if it panics. It's only a breach of good style
351 * not a bug since they are unlocks not locks.
352 */
533c011a 353 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 354 DETACH(t);
355 MUTEX_UNLOCK(&t->mutex);
8023c3ce 356 goto retry_cleanup;
c7848ba1 357 default:
bf49b057 358 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 359 "perl_destruct: ignoring %p (state %u)\n",
360 t, ThrSTATE(t)));
361 MUTEX_UNLOCK(&t->mutex);
c7848ba1 362 /* fall through and out */
33f46ff6
MB		 363 }
364 }
8023c3ce
MB		 365 /* We leave the above "Pass 1" loop with threads_mutex still locked */
366
367 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 368 while (PL_nthreads > 1)
11343788 369 {
bf49b057 370 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 371 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 372 PL_nthreads - 1));
373 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 374 }
375 /* At this point, we're the last thread */
533c011a 376 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 377 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 378 MUTEX_DESTROY(&PL_threads_mutex);
379 COND_DESTROY(&PL_nthreads_cond);
0f15f207 380#endif /* !defined(FAKE_THREADS) */
11343788
MB		 381#endif /* USE_THREADS */
382
3280af22 383 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 384#ifdef DEBUGGING
385 {
386 char *s;
155aba94 387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 388 int i = atoi(s);
389 if (destruct_level < i)
390 destruct_level = i;
391 }
4633a7c4
LW		 392 }
393#endif
394
8990e307 395 LEAVE;
a0d0e21e
LW		 396 FREETMPS;
397
ff0cee69 398 /* We must account for everything. */
399
400 /* Destroy the main CV and syntax tree */
3280af22
NIS		 401 if (PL_main_root) {
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
a0d0e21e 405 }
3280af22
NIS		 406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
409 PL_main_cv = Nullcv;
24d3c518 410 PL_dirty = TRUE;
ff0cee69 411
3280af22 412 if (PL_sv_objcount) {
a0d0e21e
LW		 413 /*
414 * Try to destruct global references. We do this first so that the
415 * destructors and destructees still exist. Some sv's might remain.
416 * Non-referenced objects are on their own.
417 */
a0d0e21e 418 sv_clean_objs();
8990e307
LW		 419 }
420
5cd24f17 421 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 422 SvREFCNT_dec(PL_warnhook);
423 PL_warnhook = Nullsv;
424 SvREFCNT_dec(PL_diehook);
425 PL_diehook = Nullsv;
5cd24f17 426
4b556e6c 427 /* call exit list functions */
3280af22 428 while (PL_exitlistlen-- > 0)
0cb96387 429 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 430
3280af22 431 Safefree(PL_exitlist);
4b556e6c 432
a0d0e21e 433 if (destruct_level == 0){
8990e307 434
a0d0e21e
LW		 435 DEBUG_P(debprofdump());
436
437 /* The exit() function will do everything that needs doing. */
438 return;
439 }
5dd60ef7 440
5f05dabc 441 /* loosen bonds of global variables */
442
3280af22
NIS		 443 if(PL_rsfp) {
444 (void)PerlIO_close(PL_rsfp);
445 PL_rsfp = Nullfp;
8ebc5c01 446 }
447
448 /* Filters for program text */
3280af22
NIS		 449 SvREFCNT_dec(PL_rsfp_filters);
450 PL_rsfp_filters = Nullav;
8ebc5c01 451
452 /* switches */
3280af22
NIS		 453 PL_preprocess = FALSE;
454 PL_minus_n = FALSE;
455 PL_minus_p = FALSE;
456 PL_minus_l = FALSE;
457 PL_minus_a = FALSE;
458 PL_minus_F = FALSE;
459 PL_doswitches = FALSE;
599cee73 460 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 461 PL_doextract = FALSE;
462 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 463 PL_unsafe = FALSE;
464
465 Safefree(PL_inplace);
466 PL_inplace = Nullch;
a7cb1f99 467 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 468
469 if (PL_e_script) {
470 SvREFCNT_dec(PL_e_script);
471 PL_e_script = Nullsv;
8ebc5c01 472 }
473
474 /* magical thingies */
475
d33b2eba 476 Safefree(PL_ofs); /* $, */
3280af22 477 PL_ofs = Nullch;
5f05dabc 478
d33b2eba 479 Safefree(PL_ors); /* $\ */
3280af22 480 PL_ors = Nullch;
8ebc5c01 481
3280af22
NIS		 482 SvREFCNT_dec(PL_rs); /* $/ */
483 PL_rs = Nullsv;
dc92893f 484
3280af22
NIS		 485 SvREFCNT_dec(PL_nrs); /* $/ helper */
486 PL_nrs = Nullsv;
5f05dabc 487
d33b2eba
GS		 488 PL_multiline = 0; /* $* */
489 Safefree(PL_osname); /* $^O */
490 PL_osname = Nullch;
5f05dabc 491
3280af22
NIS		 492 SvREFCNT_dec(PL_statname);
493 PL_statname = Nullsv;
494 PL_statgv = Nullgv;
5f05dabc 495
8ebc5c01 496 /* defgv, aka *_ should be taken care of elsewhere */
497
8ebc5c01 498 /* clean up after study() */
3280af22
NIS		 499 SvREFCNT_dec(PL_lastscream);
500 PL_lastscream = Nullsv;
501 Safefree(PL_screamfirst);
502 PL_screamfirst = 0;
503 Safefree(PL_screamnext);
504 PL_screamnext = 0;
8ebc5c01 505
7d5ea4e7
GS		 506 /* float buffer */
507 Safefree(PL_efloatbuf);
508 PL_efloatbuf = Nullch;
509 PL_efloatsize = 0;
510
8ebc5c01 511 /* startup and shutdown function lists */
3280af22
NIS		 512 SvREFCNT_dec(PL_beginav);
513 SvREFCNT_dec(PL_endav);
7d30b5c4 514 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 515 SvREFCNT_dec(PL_initav);
516 PL_beginav = Nullav;
517 PL_endav = Nullav;
7d30b5c4 518 PL_checkav = Nullav;
3280af22 519 PL_initav = Nullav;
5618dfe8 520
8ebc5c01 521 /* shortcuts just get cleared */
3280af22 522 PL_envgv = Nullgv;
3280af22
NIS		 523 PL_incgv = Nullgv;
524 PL_hintgv = Nullgv;
525 PL_errgv = Nullgv;
526 PL_argvgv = Nullgv;
527 PL_argvoutgv = Nullgv;
528 PL_stdingv = Nullgv;
bf49b057 529 PL_stderrgv = Nullgv;
3280af22
NIS		 530 PL_last_in_gv = Nullgv;
531 PL_replgv = Nullgv;
5c831c24 532 PL_debstash = Nullhv;
8ebc5c01 533
534 /* reset so print() ends up where we expect */
535 setdefout(Nullgv);
5c831c24 536
7a1c5554
GS		 537 SvREFCNT_dec(PL_argvout_stack);
538 PL_argvout_stack = Nullav;
8ebc5c01 539
5c831c24
GS		 540 SvREFCNT_dec(PL_modglobal);
541 PL_modglobal = Nullhv;
542 SvREFCNT_dec(PL_preambleav);
543 PL_preambleav = Nullav;
544 SvREFCNT_dec(PL_subname);
545 PL_subname = Nullsv;
546 SvREFCNT_dec(PL_linestr);
547 PL_linestr = Nullsv;
548 SvREFCNT_dec(PL_pidstatus);
549 PL_pidstatus = Nullhv;
550 SvREFCNT_dec(PL_toptarget);
551 PL_toptarget = Nullsv;
552 SvREFCNT_dec(PL_bodytarget);
553 PL_bodytarget = Nullsv;
554 PL_formtarget = Nullsv;
555
d33b2eba 556 /* free locale stuff */
b9582b6a 557#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 558 Safefree(PL_collation_name);
559 PL_collation_name = Nullch;
b9582b6a 560#endif
d33b2eba 561
b9582b6a 562#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 563 Safefree(PL_numeric_name);
564 PL_numeric_name = Nullch;
b9582b6a 565#endif
d33b2eba 566
5c831c24
GS		 567 /* clear utf8 character classes */
568 SvREFCNT_dec(PL_utf8_alnum);
569 SvREFCNT_dec(PL_utf8_alnumc);
570 SvREFCNT_dec(PL_utf8_ascii);
571 SvREFCNT_dec(PL_utf8_alpha);
572 SvREFCNT_dec(PL_utf8_space);
573 SvREFCNT_dec(PL_utf8_cntrl);
574 SvREFCNT_dec(PL_utf8_graph);
575 SvREFCNT_dec(PL_utf8_digit);
576 SvREFCNT_dec(PL_utf8_upper);
577 SvREFCNT_dec(PL_utf8_lower);
578 SvREFCNT_dec(PL_utf8_print);
579 SvREFCNT_dec(PL_utf8_punct);
580 SvREFCNT_dec(PL_utf8_xdigit);
581 SvREFCNT_dec(PL_utf8_mark);
582 SvREFCNT_dec(PL_utf8_toupper);
583 SvREFCNT_dec(PL_utf8_tolower);
584 PL_utf8_alnum = Nullsv;
585 PL_utf8_alnumc = Nullsv;
586 PL_utf8_ascii = Nullsv;
587 PL_utf8_alpha = Nullsv;
588 PL_utf8_space = Nullsv;
589 PL_utf8_cntrl = Nullsv;
590 PL_utf8_graph = Nullsv;
591 PL_utf8_digit = Nullsv;
592 PL_utf8_upper = Nullsv;
593 PL_utf8_lower = Nullsv;
594 PL_utf8_print = Nullsv;
595 PL_utf8_punct = Nullsv;
596 PL_utf8_xdigit = Nullsv;
597 PL_utf8_mark = Nullsv;
598 PL_utf8_toupper = Nullsv;
599 PL_utf8_totitle = Nullsv;
600 PL_utf8_tolower = Nullsv;
601
971a9dd3
GS		 602 if (!specialWARN(PL_compiling.cop_warnings))
603 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 604 PL_compiling.cop_warnings = Nullsv;
f4dd75d9
GS		 605#ifdef USE_ITHREADS
606 Safefree(CopFILE(&PL_compiling));
607 CopFILE(&PL_compiling) = Nullch;
608 Safefree(CopSTASHPV(&PL_compiling));
609#else
01724ea0 610 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 611 CopFILEGV(&PL_compiling) = Nullgv;
612 /* cop_stash is not refcounted */
01724ea0 613#endif
5c831c24 614
a0d0e21e 615 /* Prepare to destruct main symbol table. */
5f05dabc 616
3280af22
NIS		 617 hv = PL_defstash;
618 PL_defstash = 0;
a0d0e21e 619 SvREFCNT_dec(hv);
5c831c24
GS		 620 SvREFCNT_dec(PL_curstname);
621 PL_curstname = Nullsv;
a0d0e21e 622
5a844595
GS		 623 /* clear queued errors */
624 SvREFCNT_dec(PL_errors);
625 PL_errors = Nullsv;
626
a0d0e21e 627 FREETMPS;
0453d815 628 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 629 if (PL_scopestack_ix != 0)
0453d815
PM		 630 Perl_warner(aTHX_ WARN_INTERNAL,
631 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 632 (long)PL_scopestack_ix);
633 if (PL_savestack_ix != 0)
0453d815
PM		 634 Perl_warner(aTHX_ WARN_INTERNAL,
635 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 636 (long)PL_savestack_ix);
637 if (PL_tmps_floor != -1)
0453d815 638 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 639 (long)PL_tmps_floor + 1);
a0d0e21e 640 if (cxstack_ix != -1)
0453d815 641 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 642 (long)cxstack_ix + 1);
a0d0e21e 643 }
8990e307
LW		 644
645 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 646 last_sv_count = 0;
d33b2eba 647 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS		 648 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
649 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
650 last_sv_count = PL_sv_count;
8990e307
LW		 651 sv_clean_all();
652 }
d33b2eba
GS		 653 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
654 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 655 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
656 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 657
d4777f27
GS		 658 AvREAL_off(PL_fdpid); /* no surviving entries */
659 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 660 PL_fdpid = Nullav;
661
6c644e78
GS		 662#ifdef HAVE_INTERP_INTERN
663 sys_intern_clear();
664#endif
665
6e72f9df 666 /* Destruct the global string table. */
667 {
668 /* Yell and reset the HeVAL() slots that are still holding refcounts,
669 * so that sv_free() won't fail on them.
670 */
671 I32 riter;
672 I32 max;
673 HE *hent;
674 HE **array;
675
676 riter = 0;
3280af22
NIS		 677 max = HvMAX(PL_strtab);
678 array = HvARRAY(PL_strtab);
6e72f9df 679 hent = array[0];
680 for (;;) {
0453d815
PM		 681 if (hent && ckWARN_d(WARN_INTERNAL)) {
682 Perl_warner(aTHX_ WARN_INTERNAL,
683 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 684 HeVAL(hent) - Nullsv, HeKEY(hent));
685 HeVAL(hent) = Nullsv;
686 hent = HeNEXT(hent);
687 }
688 if (!hent) {
689 if (++riter > max)
690 break;
691 hent = array[riter];
692 }
693 }
694 }
3280af22 695 SvREFCNT_dec(PL_strtab);
6e72f9df 696
d33b2eba
GS		 697 /* free special SVs */
698
699 SvREFCNT(&PL_sv_yes) = 0;
700 sv_clear(&PL_sv_yes);
701 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 702 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 703
704 SvREFCNT(&PL_sv_no) = 0;
705 sv_clear(&PL_sv_no);
706 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 707 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 708
709 SvREFCNT(&PL_sv_undef) = 0;
710 SvREADONLY_off(&PL_sv_undef);
d33b2eba 711
0453d815
PM		 712 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
713 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 714
3280af22 715 Safefree(PL_origfilename);
3280af22 716 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 717 if (PL_reg_curpm)
718 Safefree(PL_reg_curpm);
82ba1be6 719 Safefree(PL_reg_poscache);
3280af22
NIS		 720 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
721 Safefree(PL_op_mask);
cf36064f
GS		 722 Safefree(PL_psig_ptr);
723 Safefree(PL_psig_name);
6e72f9df 724 nuke_stacks();
3280af22 725 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
a0d0e21e
LW		 726
727 DEBUG_P(debprofdump());
11343788 728#ifdef USE_THREADS
5f08fbcd 729 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 730 MUTEX_DESTROY(&PL_sv_mutex);
731 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 732 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 733 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 734 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 735#ifdef EMULATE_ATOMIC_REFCOUNTS
736 MUTEX_DESTROY(&PL_svref_mutex);
737#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 738
8023c3ce 739 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 740 Safefree(SvPVX(PL_thrsv));
741 Safefree(SvANY(PL_thrsv));
742 Safefree(PL_thrsv);
743 PL_thrsv = Nullsv;
8023c3ce 744#endif /* USE_THREADS */
d33b2eba 745
612f20c3
GS		 746 sv_free_arenas();
747
fc36a67e 748 /* As the absolutely last thing, free the non-arena SV for mess() */
749
3280af22 750 if (PL_mess_sv) {
9c63abab
GS		 751 /* it could have accumulated taint magic */
752 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
753 MAGIC* mg;
754 MAGIC* moremagic;
755 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
756 moremagic = mg->mg_moremagic;
757 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
758 Safefree(mg->mg_ptr);
759 Safefree(mg);
760 }
761 }
fc36a67e 762 /* we know that type >= SVt_PV */
155aba94 763 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 764 Safefree(SvPVX(PL_mess_sv));
765 Safefree(SvANY(PL_mess_sv));
766 Safefree(PL_mess_sv);
767 PL_mess_sv = Nullsv;
fc36a67e 768 }
79072805
LW		 769}
770
954c1994
GS		 771/*
772=for apidoc perl_free
773
774Releases a Perl interpreter. See L<perlembed>.
775
776=cut
777*/
778
79072805 779void
0cb96387 780perl_free(pTHXx)
79072805 781{
c5be433b 782#if defined(PERL_OBJECT)
7f0d82f7 783 PerlMem_free(this);
76e3520e 784#else
1c0ca838
GS		 785# if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
786 void *host = w32_internal_host;
7f0d82f7 787 PerlMem_free(aTHXx);
1c0ca838
GS		 788 win32_delete_internal_host(host);
789# else
790 PerlMem_free(aTHXx);
791# endif
76e3520e 792#endif
79072805
LW		 793}
794
4b556e6c 795void
864dbfa3 796Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 797{
3280af22
NIS		 798 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
799 PL_exitlist[PL_exitlistlen].fn = fn;
800 PL_exitlist[PL_exitlistlen].ptr = ptr;
801 ++PL_exitlistlen;
4b556e6c
JD		 802}
803
954c1994
GS		 804/*
805=for apidoc perl_parse
806
807Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
808
809=cut
810*/
811
79072805 812int
0cb96387 813perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 814{
11343788 815 dTHR;
6224f72b 816 I32 oldscope;
6224f72b 817 int ret;
db36c5a1 818 dJMPENV;
cea2e8a9
GS		 819#ifdef USE_THREADS
820 dTHX;
821#endif
8d063cd8 822
a687059c
LW		 823#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
824#ifdef IAMSUID
825#undef IAMSUID
cea2e8a9 826 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 827setuid perl scripts securely.\n");
828#endif
829#endif
830
8f1f23e8 831#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 832 _dyld_lookup_and_bind
833 ("__environ", (unsigned long *) &environ_pointer, NULL);
834#endif /* environ */
835
3280af22
NIS		 836 PL_origargv = argv;
837 PL_origargc = argc;
a0d0e21e 838#ifndef VMS /* VMS doesn't have environ array */
3280af22 839 PL_origenviron = environ;
a0d0e21e
LW		 840#endif
841
3280af22 842 if (PL_do_undump) {
a0d0e21e
LW		 843
844 /* Come here if running an undumped a.out. */
845
3280af22
NIS		 846 PL_origfilename = savepv(argv[0]);
847 PL_do_undump = FALSE;
a0d0e21e 848 cxstack_ix = -1; /* start label stack again */
748a9306 849 init_ids();
a0d0e21e
LW		 850 init_postdump_symbols(argc,argv,env);
851 return 0;
852 }
853
3280af22
NIS		 854 if (PL_main_root) {
855 PL_curpad = AvARRAY(PL_comppad);
856 op_free(PL_main_root);
857 PL_main_root = Nullop;
ff0cee69 858 }
3280af22
NIS		 859 PL_main_start = Nullop;
860 SvREFCNT_dec(PL_main_cv);
861 PL_main_cv = Nullcv;
79072805 862
3280af22
NIS		 863 time(&PL_basetime);
864 oldscope = PL_scopestack_ix;
599cee73 865 PL_dowarn = G_WARN_OFF;
f86702cc 866
14dd3ad8
GS		 867#ifdef PERL_FLEXIBLE_EXCEPTIONS
868 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
869#else
870 JMPENV_PUSH(ret);
871#endif
6224f72b 872 switch (ret) {
312caa8e 873 case 0:
14dd3ad8
GS		 874#ifndef PERL_FLEXIBLE_EXCEPTIONS
875 parse_body(env,xsinit);
876#endif
7d30b5c4
GS		 877 if (PL_checkav)
878 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 879 ret = 0;
880 break;
6224f72b
GS		 881 case 1:
882 STATUS_ALL_FAILURE;
883 /* FALL THROUGH */
884 case 2:
885 /* my_exit() was called */
3280af22 886 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 887 LEAVE;
888 FREETMPS;
3280af22 889 PL_curstash = PL_defstash;
7d30b5c4
GS		 890 if (PL_checkav)
891 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 892 ret = STATUS_NATIVE_EXPORT;
893 break;
6224f72b 894 case 3:
bf49b057 895 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 896 ret = 1;
897 break;
6224f72b 898 }
14dd3ad8
GS		 899 JMPENV_POP;
900 return ret;
901}
902
903#ifdef PERL_FLEXIBLE_EXCEPTIONS
904STATIC void *
905S_vparse_body(pTHX_ va_list args)
906{
907 char **env = va_arg(args, char**);
908 XSINIT_t xsinit = va_arg(args, XSINIT_t);
909
910 return parse_body(env, xsinit);
312caa8e 911}
14dd3ad8 912#endif
312caa8e
CS		 913
914STATIC void *
14dd3ad8 915S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e
CS		 916{
917 dTHR;
918 int argc = PL_origargc;
919 char **argv = PL_origargv;
312caa8e
CS		 920 char *scriptname = NULL;
921 int fdscript = -1;
922 VOL bool dosearch = FALSE;
923 char *validarg = "";
924 AV* comppadlist;
925 register SV *sv;
926 register char *s;
f4c556ac 927 char *cddir = Nullch;
312caa8e 928
3280af22 929 sv_setpvn(PL_linestr,"",0);
79cb57f6 930 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 931 SAVEFREESV(sv);
932 init_main_stash();
54310121 933
6224f72b
GS		 934 for (argc--,argv++; argc > 0; argc--,argv++) {
935 if (argv[0][0] != '-' || !argv[0][1])
936 break;
937#ifdef DOSUID
938 if (*validarg)
939 validarg = " PHOOEY ";
940 else
941 validarg = argv[0];
13281fa4 942#endif
6224f72b
GS		 943 s = argv[0]+1;
944 reswitch:
945 switch (*s) {
729a02f2
GS		 946 case 'C':
947#ifdef WIN32
c0932edc 948 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 949 /* FALL THROUGH */
950#endif
1d5472a9
GS		 951#ifndef PERL_STRICT_CR
952 case '\r':
953#endif
6224f72b
GS		 954 case ' ':
955 case '0':
956 case 'F':
957 case 'a':
958 case 'c':
959 case 'd':
960 case 'D':
961 case 'h':
962 case 'i':
963 case 'l':
964 case 'M':
965 case 'm':
966 case 'n':
967 case 'p':
968 case 's':
969 case 'u':
970 case 'U':
971 case 'v':
599cee73
PM		 972 case 'W':
973 case 'X':
6224f72b 974 case 'w':
155aba94 975 if ((s = moreswitches(s)))
6224f72b
GS		 976 goto reswitch;
977 break;
33b78306 978
6224f72b 979 case 'T':
3280af22 980 PL_tainting = TRUE;
6224f72b
GS		 981 s++;
982 goto reswitch;
f86702cc 983
6224f72b 984 case 'e':
bf4acbe4
GS		 985#ifdef MACOS_TRADITIONAL
986 /* ignore -e for Dev:Pseudo argument */
987 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
988 break;
989#endif
3280af22 990 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 991 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 992 if (!PL_e_script) {
79cb57f6 993 PL_e_script = newSVpvn("",0);
0cb96387 994 filter_add(read_e_script, NULL);
6224f72b
GS		 995 }
996 if (*++s)
3280af22 997 sv_catpv(PL_e_script, s);
6224f72b 998 else if (argv[1]) {
3280af22 999 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1000 argc--,argv++;
1001 }
1002 else
cea2e8a9 1003 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1004 sv_catpv(PL_e_script, "\n");
6224f72b 1005 break;
afe37c7d 1006
6224f72b
GS		 1007 case 'I': /* -I handled both here and in moreswitches() */
1008 forbid_setid("-I");
1009 if (!*++s && (s=argv[1]) != Nullch) {
1010 argc--,argv++;
1011 }
6224f72b 1012 if (s && *s) {
0df16ed7
GS		 1013 char *p;
1014 STRLEN len = strlen(s);
1015 p = savepvn(s, len);
9c8a64f0 1016 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1017 sv_catpvn(sv, "-I", 2);
1018 sv_catpvn(sv, p, len);
1019 sv_catpvn(sv, " ", 1);
6224f72b 1020 Safefree(p);
0df16ed7
GS		 1021 }
1022 else
a67e862a 1023 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1024 break;
1025 case 'P':
1026 forbid_setid("-P");
3280af22 1027 PL_preprocess = TRUE;
6224f72b
GS		 1028 s++;
1029 goto reswitch;
1030 case 'S':
1031 forbid_setid("-S");
1032 dosearch = TRUE;
1033 s++;
1034 goto reswitch;
1035 case 'V':
3280af22
NIS		 1036 if (!PL_preambleav)
1037 PL_preambleav = newAV();
1038 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1039 if (*++s != ':') {
3280af22 1040 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1041#ifdef VMS
6b88bc9c 1042 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1043#else
3280af22 1044 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1045#endif
3280af22 1046 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1047# ifdef DEBUGGING
3280af22 1048 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1049# endif
6224f72b 1050# ifdef MULTIPLICITY
8f872242 1051 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1052# endif
b363f7ed
GS		 1053# ifdef USE_THREADS
1054 sv_catpv(PL_Sv," USE_THREADS");
1055# endif
ac5e8965
JH		 1056# ifdef USE_ITHREADS
1057 sv_catpv(PL_Sv," USE_ITHREADS");
1058# endif
10cc9d2a
JH		 1059# ifdef USE_64_BIT_INT
1060 sv_catpv(PL_Sv," USE_64_BIT_INT");
1061# endif
1062# ifdef USE_64_BIT_ALL
1063 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1064# endif
1065# ifdef USE_LONG_DOUBLE
1066 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1067# endif
53430762
JH		 1068# ifdef USE_LARGE_FILES
1069 sv_catpv(PL_Sv," USE_LARGE_FILES");
1070# endif
ac5e8965
JH		 1071# ifdef USE_SOCKS
1072 sv_catpv(PL_Sv," USE_SOCKS");
1073# endif
b363f7ed
GS		 1074# ifdef PERL_OBJECT
1075 sv_catpv(PL_Sv," PERL_OBJECT");
1076# endif
1077# ifdef PERL_IMPLICIT_CONTEXT
1078 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1079# endif
1080# ifdef PERL_IMPLICIT_SYS
1081 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1082# endif
3280af22 1083 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1084
6224f72b
GS		 1085#if defined(LOCAL_PATCH_COUNT)
1086 if (LOCAL_PATCH_COUNT > 0) {
1087 int i;
3280af22 1088 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1089 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1090 if (PL_localpatches[i])
cea2e8a9 1091 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1092 }
1093 }
1094#endif
cea2e8a9 1095 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1096#ifdef __DATE__
1097# ifdef __TIME__
cea2e8a9 1098 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1099# else
cea2e8a9 1100 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1101# endif
1102#endif
3280af22 1103 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1104$\"=\"\\n \"; \
1105@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1106print \" \\%ENV:\\n @env\\n\" if @env; \
1107print \" \\@INC:\\n @INC\\n\";");
1108 }
1109 else {
3280af22
NIS		 1110 PL_Sv = newSVpv("config_vars(qw(",0);
1111 sv_catpv(PL_Sv, ++s);
1112 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1113 s += strlen(s);
1114 }
3280af22 1115 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1116 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1117 goto reswitch;
1118 case 'x':
3280af22 1119 PL_doextract = TRUE;
6224f72b
GS		 1120 s++;
1121 if (*s)
f4c556ac 1122 cddir = s;
6224f72b
GS		 1123 break;
1124 case 0:
1125 break;
1126 case '-':
1127 if (!*++s || isSPACE(*s)) {
1128 argc--,argv++;
1129 goto switch_end;
1130 }
1131 /* catch use of gnu style long options */
1132 if (strEQ(s, "version")) {
1133 s = "v";
1134 goto reswitch;
1135 }
1136 if (strEQ(s, "help")) {
1137 s = "h";
1138 goto reswitch;
1139 }
1140 s--;
1141 /* FALL THROUGH */
1142 default:
cea2e8a9 1143 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1144 }
1145 }
6224f72b 1146 switch_end:
54310121 1147
f675dbe5
CB		 1148 if (
1149#ifndef SECURE_INTERNAL_GETENV
1150 !PL_tainting &&
1151#endif
0df16ed7
GS		 1152 (s = PerlEnv_getenv("PERL5OPT")))
1153 {
74288ac8
GS		 1154 while (isSPACE(*s))
1155 s++;
1156 if (*s == '-' && *(s+1) == 'T')
1157 PL_tainting = TRUE;
1158 else {
1159 while (s && *s) {
1160 while (isSPACE(*s))
1161 s++;
1162 if (*s == '-') {
1163 s++;
1164 if (isSPACE(*s))
1165 continue;
1166 }
1167 if (!*s)
1168 break;
1169 if (!strchr("DIMUdmw", *s))
cea2e8a9 1170 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 1171 s = moreswitches(s);
6224f72b 1172 }
6224f72b
GS		 1173 }
1174 }
a0d0e21e 1175
6224f72b
GS		 1176 if (!scriptname)
1177 scriptname = argv[0];
3280af22 1178 if (PL_e_script) {
6224f72b
GS		 1179 argc++,argv--;
1180 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1181 }
1182 else if (scriptname == Nullch) {
1183#ifdef MSDOS
1184 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1185 moreswitches("h");
1186#endif
1187 scriptname = "-";
1188 }
1189
1190 init_perllib();
1191
1192 open_script(scriptname,dosearch,sv,&fdscript);
1193
1194 validate_suid(validarg, scriptname,fdscript);
1195
64ca3a65 1196#ifndef PERL_MICRO
0b5b802d
GS		 1197#if defined(SIGCHLD) || defined(SIGCLD)
1198 {
1199#ifndef SIGCHLD
1200# define SIGCHLD SIGCLD
1201#endif
1202 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1203 if (sigstate == SIG_IGN) {
1204 if (ckWARN(WARN_SIGNAL))
1205 Perl_warner(aTHX_ WARN_SIGNAL,
1206 "Can't ignore signal CHLD, forcing to default");
1207 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1208 }
1209 }
1210#endif
64ca3a65 1211#endif
0b5b802d 1212
bf4acbe4
GS		 1213#ifdef MACOS_TRADITIONAL
1214 if (PL_doextract || gMacPerl_AlwaysExtract) {
1215#else
f4c556ac 1216 if (PL_doextract) {
bf4acbe4 1217#endif
6224f72b 1218 find_beginning();
f4c556ac
GS		 1219 if (cddir && PerlDir_chdir(cddir) < 0)
1220 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1221
1222 }
6224f72b 1223
3280af22
NIS		 1224 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1225 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1226 CvUNIQUE_on(PL_compcv);
1227
1228 PL_comppad = newAV();
1229 av_push(PL_comppad, Nullsv);
1230 PL_curpad = AvARRAY(PL_comppad);
1231 PL_comppad_name = newAV();
1232 PL_comppad_name_fill = 0;
1233 PL_min_intro_pending = 0;
1234 PL_padix = 0;
6224f72b 1235#ifdef USE_THREADS
79cb57f6 1236 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1237 PL_curpad[0] = (SV*)newAV();
1238 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1239 CvOWNER(PL_compcv) = 0;
1240 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1241 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1242#endif /* USE_THREADS */
1243
1244 comppadlist = newAV();
1245 AvREAL_off(comppadlist);
3280af22
NIS		 1246 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1247 av_store(comppadlist, 1, (SV*)PL_comppad);
1248 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1249
1250 boot_core_UNIVERSAL();
9a34ef1d 1251#ifndef PERL_MICRO
09bef843 1252 boot_core_xsutils();
9a34ef1d 1253#endif
6224f72b
GS		 1254
1255 if (xsinit)
0cb96387 1256 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1257#ifndef PERL_MICRO
5db16f6a 1258#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
c5be433b 1259 init_os_extras();
6224f72b 1260#endif
64ca3a65 1261#endif
6224f72b 1262
29209bc5 1263#ifdef USE_SOCKS
1b9c9cf5
DH		 1264# ifdef HAS_SOCKS5_INIT
1265 socks5_init(argv[0]);
1266# else
29209bc5 1267 SOCKSinit(argv[0]);
1b9c9cf5 1268# endif
29209bc5
JH		 1269#endif
1270
6224f72b
GS		 1271 init_predump_symbols();
1272 /* init_postdump_symbols not currently designed to be called */
1273 /* more than once (ENV isn't cleared first, for example) */
1274 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1275 if (!PL_do_undump)
6224f72b
GS		 1276 init_postdump_symbols(argc,argv,env);
1277
1278 init_lexer();
1279
1280 /* now parse the script */
1281
1282 SETERRNO(0,SS$_NORMAL);
3280af22 1283 PL_error_count = 0;
bf4acbe4
GS		 1284#ifdef MACOS_TRADITIONAL
1285 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1286 if (PL_minus_c)
1287 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1288 else {
1289 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1290 MacPerl_MPWFileName(PL_origfilename));
1291 }
1292 }
1293#else
3280af22
NIS		 1294 if (yyparse() || PL_error_count) {
1295 if (PL_minus_c)
cea2e8a9 1296 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1297 else {
cea2e8a9 1298 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1299 PL_origfilename);
6224f72b
GS		 1300 }
1301 }
bf4acbe4 1302#endif
57843af0 1303 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1304 PL_curstash = PL_defstash;
1305 PL_preprocess = FALSE;
1306 if (PL_e_script) {
1307 SvREFCNT_dec(PL_e_script);
1308 PL_e_script = Nullsv;
6224f72b
GS		 1309 }
1310
1311 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1312 SvREFCNT_dec(PL_rs);
1313 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1314 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1315 if (PL_do_undump)
6224f72b
GS		 1316 my_unexec();
1317
57843af0
GS		 1318 if (isWARN_ONCE) {
1319 SAVECOPFILE(PL_curcop);
1320 SAVECOPLINE(PL_curcop);
3280af22 1321 gv_check(PL_defstash);
57843af0 1322 }
6224f72b
GS		 1323
1324 LEAVE;
1325 FREETMPS;
1326
1327#ifdef MYMALLOC
1328 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1329 dump_mstats("after compilation:");
1330#endif
1331
1332 ENTER;
3280af22 1333 PL_restartop = 0;
312caa8e 1334 return NULL;
6224f72b
GS		 1335}
1336
954c1994
GS		 1337/*
1338=for apidoc perl_run
1339
1340Tells a Perl interpreter to run. See L<perlembed>.
1341
1342=cut
1343*/
1344
6224f72b 1345int
0cb96387 1346perl_run(pTHXx)
6224f72b 1347{
de616352 1348 dTHR;
6224f72b 1349 I32 oldscope;
14dd3ad8 1350 int ret = 0;
db36c5a1 1351 dJMPENV;
cea2e8a9
GS		 1352#ifdef USE_THREADS
1353 dTHX;
1354#endif
6224f72b 1355
3280af22 1356 oldscope = PL_scopestack_ix;
6224f72b 1357
14dd3ad8 1358#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1359 redo_body:
14dd3ad8
GS		 1360 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1361#else
1362 JMPENV_PUSH(ret);
1363#endif
6224f72b
GS		 1364 switch (ret) {
1365 case 1:
1366 cxstack_ix = -1; /* start context stack again */
312caa8e 1367 goto redo_body;
14dd3ad8
GS		 1368 case 0: /* normal completion */
1369#ifndef PERL_FLEXIBLE_EXCEPTIONS
1370 redo_body:
1371 run_body(oldscope);
1372#endif
1373 /* FALL THROUGH */
1374 case 2: /* my_exit() */
3280af22 1375 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1376 LEAVE;
1377 FREETMPS;
3280af22 1378 PL_curstash = PL_defstash;
865be832 1379 if (PL_endav && !PL_minus_c)
3280af22 1380 call_list(oldscope, PL_endav);
6224f72b
GS		 1381#ifdef MYMALLOC
1382 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1383 dump_mstats("after execution: ");
1384#endif
14dd3ad8
GS		 1385 ret = STATUS_NATIVE_EXPORT;
1386 break;
6224f72b 1387 case 3:
312caa8e
CS		 1388 if (PL_restartop) {
1389 POPSTACK_TO(PL_mainstack);
1390 goto redo_body;
6224f72b 1391 }
bf49b057 1392 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1393 FREETMPS;
14dd3ad8
GS		 1394 ret = 1;
1395 break;
6224f72b
GS		 1396 }
1397
14dd3ad8
GS		 1398 JMPENV_POP;
1399 return ret;
312caa8e
CS		 1400}
1401
14dd3ad8 1402#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1403STATIC void *
14dd3ad8 1404S_vrun_body(pTHX_ va_list args)
312caa8e 1405{
312caa8e
CS		 1406 I32 oldscope = va_arg(args, I32);
1407
14dd3ad8
GS		 1408 return run_body(oldscope);
1409}
1410#endif
1411
1412
1413STATIC void *
1414S_run_body(pTHX_ I32 oldscope)
1415{
1416 dTHR;
1417
6224f72b 1418 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1419 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1420
3280af22 1421 if (!PL_restartop) {
6224f72b
GS		 1422 DEBUG_x(dump_all());
1423 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1424 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1425 PTR2UV(thr)));
6224f72b 1426
3280af22 1427 if (PL_minus_c) {
bf4acbe4
GS		 1428#ifdef MACOS_TRADITIONAL
1429 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1430#else
bf49b057 1431 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1432#endif
6224f72b
GS		 1433 my_exit(0);
1434 }
3280af22 1435 if (PERLDB_SINGLE && PL_DBsingle)
312caa8e 1436 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1437 if (PL_initav)
1438 call_list(oldscope, PL_initav);
6224f72b
GS		 1439 }
1440
1441 /* do it */
1442
3280af22 1443 if (PL_restartop) {
533c011a 1444 PL_op = PL_restartop;
3280af22 1445 PL_restartop = 0;
cea2e8a9 1446 CALLRUNOPS(aTHX);
6224f72b 1447 }
3280af22
NIS		 1448 else if (PL_main_start) {
1449 CvDEPTH(PL_main_cv) = 1;
533c011a 1450 PL_op = PL_main_start;
cea2e8a9 1451 CALLRUNOPS(aTHX);
6224f72b
GS		 1452 }
1453
f6b3007c
JH		 1454 my_exit(0);
1455 /* NOTREACHED */
312caa8e 1456 return NULL;
6224f72b
GS		 1457}
1458
954c1994
GS		 1459/*
1460=for apidoc p||get_sv
1461
1462Returns the SV of the specified Perl scalar. 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 1469SV*
864dbfa3 1470Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1471{
1472 GV *gv;
1473#ifdef USE_THREADS
1474 if (name[1] == '\0' && !isALPHA(name[0])) {
1475 PADOFFSET tmp = find_threadsv(name);
1476 if (tmp != NOT_IN_PAD) {
1477 dTHR;
1478 return THREADSV(tmp);
1479 }
1480 }
1481#endif /* USE_THREADS */
1482 gv = gv_fetchpv(name, create, SVt_PV);
1483 if (gv)
1484 return GvSV(gv);
1485 return Nullsv;
1486}
1487
954c1994
GS		 1488/*
1489=for apidoc p||get_av
1490
1491Returns the AV of the specified Perl array. If C<create> is set and the
1492Perl variable does not exist then it will be created. If C<create> is not
1493set and the variable does not exist then NULL is returned.
1494
1495=cut
1496*/
1497
6224f72b 1498AV*
864dbfa3 1499Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1500{
1501 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1502 if (create)
1503 return GvAVn(gv);
1504 if (gv)
1505 return GvAV(gv);
1506 return Nullav;
1507}
1508
954c1994
GS		 1509/*
1510=for apidoc p||get_hv
1511
1512Returns the HV of the specified Perl hash. If C<create> is set and the
1513Perl variable does not exist then it will be created. If C<create> is not
1514set and the variable does not exist then NULL is returned.
1515
1516=cut
1517*/
1518
6224f72b 1519HV*
864dbfa3 1520Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1521{
a0d0e21e
LW		 1522 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1523 if (create)
1524 return GvHVn(gv);
1525 if (gv)
1526 return GvHV(gv);
1527 return Nullhv;
1528}
1529
954c1994
GS		 1530/*
1531=for apidoc p||get_cv
1532
1533Returns the CV of the specified Perl subroutine. If C<create> is set and
1534the Perl subroutine does not exist then it will be declared (which has the
1535same effect as saying C<sub name;>). If C<create> is not set and the
1536subroutine does not exist then NULL is returned.
1537
1538=cut
1539*/
1540
a0d0e21e 1541CV*
864dbfa3 1542Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1543{
1544 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1545 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1546 /* XXX this is probably not what they think they're getting.
1547 * It has the same effect as "sub name;", i.e. just a forward
1548 * declaration! */
8ebc5c01 1549 if (create && !GvCVu(gv))
774d564b 1550 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1551 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1552 Nullop,
a0d0e21e
LW		 1553 Nullop);
1554 if (gv)
8ebc5c01 1555 return GvCVu(gv);
a0d0e21e
LW		 1556 return Nullcv;
1557}
1558
79072805
LW		 1559/* Be sure to refetch the stack pointer after calling these routines. */
1560
954c1994
GS		 1561/*
1562=for apidoc p||call_argv
1563
1564Performs a callback to the specified Perl sub. See L<perlcall>.
1565
1566=cut
1567*/
1568
a0d0e21e 1569I32
864dbfa3 1570Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
8ac85365
NIS		 1571
1572 /* See G_* flags in cop.h */
1573 /* null terminated arg list */
8990e307 1574{
a0d0e21e 1575 dSP;
8990e307 1576
924508f0 1577 PUSHMARK(SP);
a0d0e21e 1578 if (argv) {
8990e307 1579 while (*argv) {
a0d0e21e 1580 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1581 argv++;
1582 }
a0d0e21e 1583 PUTBACK;
8990e307 1584 }
864dbfa3 1585 return call_pv(sub_name, flags);
8990e307
LW		 1586}
1587
954c1994
GS		 1588/*
1589=for apidoc p||call_pv
1590
1591Performs a callback to the specified Perl sub. See L<perlcall>.
1592
1593=cut
1594*/
1595
a0d0e21e 1596I32
864dbfa3 1597Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1598 /* name of the subroutine */
1599 /* See G_* flags in cop.h */
a0d0e21e 1600{
864dbfa3 1601 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1602}
1603
954c1994
GS		 1604/*
1605=for apidoc p||call_method
1606
1607Performs a callback to the specified Perl method. The blessed object must
1608be on the stack. See L<perlcall>.
1609
1610=cut
1611*/
1612
a0d0e21e 1613I32
864dbfa3 1614Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1615 /* name of the subroutine */
1616 /* See G_* flags in cop.h */
a0d0e21e 1617{
968b3946 1618 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1619}
1620
1621/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1622/*
1623=for apidoc p||call_sv
1624
1625Performs a callback to the Perl sub whose name is in the SV. See
1626L<perlcall>.
1627
1628=cut
1629*/
1630
a0d0e21e 1631I32
864dbfa3 1632Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1633 /* See G_* flags in cop.h */
a0d0e21e 1634{
924508f0 1635 dSP;
a0d0e21e 1636 LOGOP myop; /* fake syntax tree node */
968b3946 1637 UNOP method_op;
aa689395 1638 I32 oldmark;
a0d0e21e 1639 I32 retval;
a0d0e21e 1640 I32 oldscope;
54310121 1641 bool oldcatch = CATCH_GET;
6224f72b 1642 int ret;
533c011a 1643 OP* oldop = PL_op;
db36c5a1 1644 dJMPENV;
1e422769 1645
a0d0e21e
LW		 1646 if (flags & G_DISCARD) {
1647 ENTER;
1648 SAVETMPS;
1649 }
1650
aa689395 1651 Zero(&myop, 1, LOGOP);
54310121 1652 myop.op_next = Nullop;
f51d4af5 1653 if (!(flags & G_NOARGS))
aa689395 1654 myop.op_flags |= OPf_STACKED;
54310121 1655 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1656 (flags & G_ARRAY) ? OPf_WANT_LIST :
1657 OPf_WANT_SCALAR);
462e5cf6 1658 SAVEOP();
533c011a 1659 PL_op = (OP*)&myop;
aa689395 1660
3280af22
NIS		 1661 EXTEND(PL_stack_sp, 1);
1662 *++PL_stack_sp = sv;
aa689395 1663 oldmark = TOPMARK;
3280af22 1664 oldscope = PL_scopestack_ix;
a0d0e21e 1665
3280af22 1666 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1667 /* Handle first BEGIN of -d. */
3280af22 1668 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1669 /* Try harder, since this may have been a sighandler, thus
1670 * curstash may be meaningless. */
3280af22 1671 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1672 && !(flags & G_NODEBUG))
533c011a 1673 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1674
968b3946
GS		 1675 if (flags & G_METHOD) {
1676 Zero(&method_op, 1, UNOP);
1677 method_op.op_next = PL_op;
1678 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1679 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1680 PL_op = (OP*)&method_op;
968b3946
GS		 1681 }
1682
312caa8e 1683 if (!(flags & G_EVAL)) {
0cdb2077 1684 CATCH_SET(TRUE);
14dd3ad8 1685 call_body((OP*)&myop, FALSE);
312caa8e 1686 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1687 CATCH_SET(oldcatch);
312caa8e
CS		 1688 }
1689 else {
d78bda3d 1690 myop.op_other = (OP*)&myop;
3280af22 1691 PL_markstack_ptr--;
4633a7c4
LW		 1692 /* we're trying to emulate pp_entertry() here */
1693 {
c09156bb 1694 register PERL_CONTEXT *cx;
54310121 1695 I32 gimme = GIMME_V;
4633a7c4
LW		 1696
1697 ENTER;
1698 SAVETMPS;
1699
968b3946 1700 push_return(Nullop);
1d76a5c3 1701 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1702 PUSHEVAL(cx, 0, 0);
533c011a 1703 PL_eval_root = PL_op; /* Only needed so that goto works right. */
4633a7c4 1704
faef0170 1705 PL_in_eval = EVAL_INEVAL;
4633a7c4 1706 if (flags & G_KEEPERR)
faef0170 1707 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1708 else
38a03e6e 1709 sv_setpv(ERRSV,"");
4633a7c4 1710 }
3280af22 1711 PL_markstack_ptr++;
a0d0e21e 1712
14dd3ad8
GS		 1713#ifdef PERL_FLEXIBLE_EXCEPTIONS
1714 redo_body:
1715 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1716 (OP*)&myop, FALSE);
14dd3ad8
GS		 1717#else
1718 JMPENV_PUSH(ret);
1719#endif
6224f72b
GS		 1720 switch (ret) {
1721 case 0:
14dd3ad8
GS		 1722#ifndef PERL_FLEXIBLE_EXCEPTIONS
1723 redo_body:
1724 call_body((OP*)&myop, FALSE);
1725#endif
312caa8e
CS		 1726 retval = PL_stack_sp - (PL_stack_base + oldmark);
1727 if (!(flags & G_KEEPERR))
1728 sv_setpv(ERRSV,"");
a0d0e21e 1729 break;
6224f72b 1730 case 1:
f86702cc 1731 STATUS_ALL_FAILURE;
a0d0e21e 1732 /* FALL THROUGH */
6224f72b 1733 case 2:
a0d0e21e 1734 /* my_exit() was called */
3280af22 1735 PL_curstash = PL_defstash;
a0d0e21e 1736 FREETMPS;
14dd3ad8 1737 JMPENV_POP;
cc3604b1 1738 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1739 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1740 my_exit_jump();
a0d0e21e 1741 /* NOTREACHED */
6224f72b 1742 case 3:
3280af22 1743 if (PL_restartop) {
533c011a 1744 PL_op = PL_restartop;
3280af22 1745 PL_restartop = 0;
312caa8e 1746 goto redo_body;
a0d0e21e 1747 }
3280af22 1748 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1749 if (flags & G_ARRAY)
1750 retval = 0;
1751 else {
1752 retval = 1;
3280af22 1753 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1754 }
312caa8e 1755 break;
a0d0e21e 1756 }
a0d0e21e 1757
3280af22 1758 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1759 SV **newsp;
1760 PMOP *newpm;
1761 I32 gimme;
c09156bb 1762 register PERL_CONTEXT *cx;
a0a2876f
LW		 1763 I32 optype;
1764
1765 POPBLOCK(cx,newpm);
1766 POPEVAL(cx);
1767 pop_return();
3280af22 1768 PL_curpm = newpm;
a0a2876f 1769 LEAVE;
a0d0e21e 1770 }
14dd3ad8 1771 JMPENV_POP;
a0d0e21e 1772 }
1e422769 1773
a0d0e21e 1774 if (flags & G_DISCARD) {
3280af22 1775 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1776 retval = 0;
1777 FREETMPS;
1778 LEAVE;
1779 }
533c011a 1780 PL_op = oldop;
a0d0e21e
LW		 1781 return retval;
1782}
1783
14dd3ad8 1784#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1785STATIC void *
14dd3ad8 1786S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1787{
1788 OP *myop = va_arg(args, OP*);
1789 int is_eval = va_arg(args, int);
1790
14dd3ad8 1791 call_body(myop, is_eval);
312caa8e
CS		 1792 return NULL;
1793}
14dd3ad8 1794#endif
312caa8e
CS		 1795
1796STATIC void
14dd3ad8 1797S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e
CS		 1798{
1799 dTHR;
1800
1801 if (PL_op == myop) {
1802 if (is_eval)
f807eda9 1803 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1804 else
f807eda9 1805 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1806 }
1807 if (PL_op)
cea2e8a9 1808 CALLRUNOPS(aTHX);
312caa8e
CS		 1809}
1810
6e72f9df 1811/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1812
954c1994
GS		 1813/*
1814=for apidoc p||eval_sv
1815
1816Tells Perl to C<eval> the string in the SV.
1817
1818=cut
1819*/
1820
a0d0e21e 1821I32
864dbfa3 1822Perl_eval_sv(pTHX_ SV *sv, I32 flags)
8ac85365
NIS		 1823
1824 /* See G_* flags in cop.h */
a0d0e21e 1825{
924508f0 1826 dSP;
a0d0e21e 1827 UNOP myop; /* fake syntax tree node */
3280af22 1828 I32 oldmark = SP - PL_stack_base;
4633a7c4 1829 I32 retval;
4633a7c4 1830 I32 oldscope;
6224f72b 1831 int ret;
533c011a 1832 OP* oldop = PL_op;
db36c5a1 1833 dJMPENV;
84902520 1834
4633a7c4
LW		 1835 if (flags & G_DISCARD) {
1836 ENTER;
1837 SAVETMPS;
1838 }
1839
462e5cf6 1840 SAVEOP();
533c011a
NIS		 1841 PL_op = (OP*)&myop;
1842 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1843 EXTEND(PL_stack_sp, 1);
1844 *++PL_stack_sp = sv;
1845 oldscope = PL_scopestack_ix;
79072805 1846
4633a7c4
LW		 1847 if (!(flags & G_NOARGS))
1848 myop.op_flags = OPf_STACKED;
79072805 1849 myop.op_next = Nullop;
6e72f9df 1850 myop.op_type = OP_ENTEREVAL;
54310121 1851 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1852 (flags & G_ARRAY) ? OPf_WANT_LIST :
1853 OPf_WANT_SCALAR);
6e72f9df 1854 if (flags & G_KEEPERR)
1855 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1856
14dd3ad8 1857#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1858 redo_body:
14dd3ad8 1859 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1860 (OP*)&myop, TRUE);
14dd3ad8
GS		 1861#else
1862 JMPENV_PUSH(ret);
1863#endif
6224f72b
GS		 1864 switch (ret) {
1865 case 0:
14dd3ad8
GS		 1866#ifndef PERL_FLEXIBLE_EXCEPTIONS
1867 redo_body:
1868 call_body((OP*)&myop,TRUE);
1869#endif
312caa8e
CS		 1870 retval = PL_stack_sp - (PL_stack_base + oldmark);
1871 if (!(flags & G_KEEPERR))
1872 sv_setpv(ERRSV,"");
4633a7c4 1873 break;
6224f72b 1874 case 1:
f86702cc 1875 STATUS_ALL_FAILURE;
4633a7c4 1876 /* FALL THROUGH */
6224f72b 1877 case 2:
4633a7c4 1878 /* my_exit() was called */
3280af22 1879 PL_curstash = PL_defstash;
4633a7c4 1880 FREETMPS;
14dd3ad8 1881 JMPENV_POP;
cc3604b1 1882 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1883 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1884 my_exit_jump();
4633a7c4 1885 /* NOTREACHED */
6224f72b 1886 case 3:
3280af22 1887 if (PL_restartop) {
533c011a 1888 PL_op = PL_restartop;
3280af22 1889 PL_restartop = 0;
312caa8e 1890 goto redo_body;
4633a7c4 1891 }
3280af22 1892 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1893 if (flags & G_ARRAY)
1894 retval = 0;
1895 else {
1896 retval = 1;
3280af22 1897 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1898 }
312caa8e 1899 break;
4633a7c4
LW		 1900 }
1901
14dd3ad8 1902 JMPENV_POP;
4633a7c4 1903 if (flags & G_DISCARD) {
3280af22 1904 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1905 retval = 0;
1906 FREETMPS;
1907 LEAVE;
1908 }
533c011a 1909 PL_op = oldop;
4633a7c4
LW		 1910 return retval;
1911}
1912
954c1994
GS		 1913/*
1914=for apidoc p||eval_pv
1915
1916Tells Perl to C<eval> the given string and return an SV* result.
1917
1918=cut
1919*/
1920
137443ea 1921SV*
864dbfa3 1922Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1923{
1924 dSP;
1925 SV* sv = newSVpv(p, 0);
1926
864dbfa3 1927 eval_sv(sv, G_SCALAR);
137443ea 1928 SvREFCNT_dec(sv);
1929
1930 SPAGAIN;
1931 sv = POPs;
1932 PUTBACK;
1933
2d8e6c8d
GS		 1934 if (croak_on_error && SvTRUE(ERRSV)) {
1935 STRLEN n_a;
cea2e8a9 1936 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1937 }
137443ea 1938
1939 return sv;
1940}
1941
4633a7c4
LW		 1942/* Require a module. */
1943
954c1994
GS		 1944/*
1945=for apidoc p||require_pv
1946
1947Tells Perl to C<require> a module.
1948
1949=cut
1950*/
1951
4633a7c4 1952void
864dbfa3 1953Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1954{
d3acc0f7
JP		 1955 SV* sv;
1956 dSP;
e788e7d3 1957 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 1958 PUTBACK;
1959 sv = sv_newmortal();
4633a7c4
LW		 1960 sv_setpv(sv, "require '");
1961 sv_catpv(sv, pv);
1962 sv_catpv(sv, "'");
864dbfa3 1963 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 1964 SPAGAIN;
1965 POPSTACK;
79072805
LW		 1966}
1967
79072805 1968void
864dbfa3 1969Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 1970{
1971 register GV *gv;
1972
155aba94 1973 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW		 1974 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1975}
1976
76e3520e 1977STATIC void
cea2e8a9 1978S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 1979{
ab821d7f 1980 /* This message really ought to be max 23 lines.
1981 * Removed -h because the user already knows that opton. Others? */
fb73857a 1982
76e3520e 1983 static char *usage_msg[] = {
fb73857a 1984"-0[octal] specify record separator (\\0, if no argument)",
1985"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 1986"-C enable native wide character system interfaces",
1950ee41 1987"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 1988"-d[:debugger] run program under debugger",
1989"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1990"-e 'command' one line of program (several -e's allowed, omit programfile)",
1991"-F/pattern/ split() pattern for -a switch (//'s are optional)",
1992"-i[extension] edit <> files in place (makes backup if extension supplied)",
1993"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 1994"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 1995"-[mM][-]module execute `use/no module...' before executing program",
1996"-n assume 'while (<>) { ... }' loop around program",
1997"-p assume loop like -n but print line also, like sed",
1998"-P run program through C preprocessor before compilation",
1999"-s enable rudimentary parsing for switches after programfile",
2000"-S look for programfile using PATH environment variable",
2001"-T enable tainting checks",
2002"-u dump core after parsing program",
fb73857a 2003"-U allow unsafe operations",
aac3bd0d
GS		 2004"-v print version, subversion (includes VERY IMPORTANT perl info)",
2005"-V[:variable] print configuration summary (or a single Config.pm variable)",
2006"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2007"-W enable all warnings",
2008"-X disable all warnings",
fb73857a 2009"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2010"\n",
2011NULL
2012};
76e3520e 2013 char **p = usage_msg;
fb73857a 2014
b0e47665
GS		 2015 PerlIO_printf(PerlIO_stdout(),
2016 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2017 name);
fb73857a 2018 while (*p)
b0e47665 2019 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2020}
2021
79072805
LW		 2022/* This routine handles any switches that can be given during run */
2023
2024char *
864dbfa3 2025Perl_moreswitches(pTHX_ char *s)
79072805
LW		 2026{
2027 I32 numlen;
c07a80fd 2028 U32 rschar;
79072805
LW		 2029
2030 switch (*s) {
2031 case '0':
a863c7d1
MB		 2032 {
2033 dTHR;
b21ed0a9 2034 numlen = 0; /* disallow underscores */
dff6d3cd 2035 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2036 SvREFCNT_dec(PL_nrs);
c07a80fd 2037 if (rschar & ~((U8)~0))
3280af22 2038 PL_nrs = &PL_sv_undef;
c07a80fd 2039 else if (!rschar && numlen >= 2)
79cb57f6 2040 PL_nrs = newSVpvn("", 0);
c07a80fd 2041 else {
2042 char ch = rschar;
79cb57f6 2043 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2044 }
2045 return s + numlen;
a863c7d1 2046 }
46487f74
GS		 2047 case 'C':
2048 PL_widesyscalls = TRUE;
2049 s++;
2050 return s;
2304df62 2051 case 'F':
3280af22
NIS		 2052 PL_minus_F = TRUE;
2053 PL_splitstr = savepv(s + 1);
2304df62
AD		 2054 s += strlen(s);
2055 return s;
79072805 2056 case 'a':
3280af22 2057 PL_minus_a = TRUE;
79072805
LW		 2058 s++;
2059 return s;
2060 case 'c':
3280af22 2061 PL_minus_c = TRUE;
79072805
LW		 2062 s++;
2063 return s;
2064 case 'd':
bbce6d69 2065 forbid_setid("-d");
4633a7c4 2066 s++;
70c94a19
RR		 2067 /* The following permits -d:Mod to accepts arguments following an =
2068 in the fashion that -MSome::Mod does. */
2069 if (*s == ':' || *s == '=') {
2070 char *start;
2071 SV *sv;
2072 sv = newSVpv("use Devel::", 0);
2073 start = ++s;
2074 /* We now allow -d:Module=Foo,Bar */
2075 while(isALNUM(*s) || *s==':') ++s;
2076 if (*s != '=')
2077 sv_catpv(sv, start);
2078 else {
2079 sv_catpvn(sv, start, s-start);
2080 sv_catpv(sv, " split(/,/,q{");
2081 sv_catpv(sv, ++s);
2082 sv_catpv(sv, "})");
2083 }
4633a7c4 2084 s += strlen(s);
70c94a19 2085 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2086 }
ed094faf 2087 if (!PL_perldb) {
3280af22 2088 PL_perldb = PERLDB_ALL;
a0d0e21e 2089 init_debugger();
ed094faf 2090 }
79072805
LW		 2091 return s;
2092 case 'D':
0453d815 2093 {
79072805 2094#ifdef DEBUGGING
bbce6d69 2095 forbid_setid("-D");
79072805 2096 if (isALPHA(s[1])) {
8b73bbec 2097 static char debopts[] = "psltocPmfrxuLHXDS";
79072805
LW		 2098 char *d;
2099
93a17b20 2100 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2101 PL_debug |= 1 << (d - debopts);
79072805
LW		 2102 }
2103 else {
3280af22 2104 PL_debug = atoi(s+1);
79072805
LW		 2105 for (s++; isDIGIT(*s); s++) ;
2106 }
3280af22 2107 PL_debug |= 0x80000000;
79072805 2108#else
0453d815
PM		 2109 dTHR;
2110 if (ckWARN_d(WARN_DEBUGGING))
2111 Perl_warner(aTHX_ WARN_DEBUGGING,
2112 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2113 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2114#endif
2115 /*SUPPRESS 530*/
2116 return s;
0453d815 2117 }
4633a7c4 2118 case 'h':
3280af22 2119 usage(PL_origargv[0]);
6ad3d225 2120 PerlProc_exit(0);
79072805 2121 case 'i':
3280af22
NIS		 2122 if (PL_inplace)
2123 Safefree(PL_inplace);
2124 PL_inplace = savepv(s+1);
79072805 2125 /*SUPPRESS 530*/
3280af22 2126 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2127 if (*s) {
fb73857a 2128 *s++ = '\0';
7b8d334a
GS		 2129 if (*s == '-') /* Additional switches on #! line. */
2130 s++;
2131 }
fb73857a 2132 return s;
2133 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2134 forbid_setid("-I");
fb73857a 2135 ++s;
2136 while (*s && isSPACE(*s))
2137 ++s;
2138 if (*s) {
774d564b 2139 char *e, *p;
0df16ed7
GS		 2140 p = s;
2141 /* ignore trailing spaces (possibly followed by other switches) */
2142 do {
2143 for (e = p; *e && !isSPACE(*e); e++) ;
2144 p = e;
2145 while (isSPACE(*p))
2146 p++;
2147 } while (*p && *p != '-');
2148 e = savepvn(s, e-s);
9c8a64f0 2149 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2150 Safefree(e);
2151 s = p;
2152 if (*s == '-')
2153 s++;
79072805
LW		 2154 }
2155 else
a67e862a 2156 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2157 return s;
79072805 2158 case 'l':
3280af22 2159 PL_minus_l = TRUE;
79072805 2160 s++;
3280af22
NIS		 2161 if (PL_ors)
2162 Safefree(PL_ors);
79072805 2163 if (isDIGIT(*s)) {
3280af22
NIS		 2164 PL_ors = savepv("\n");
2165 PL_orslen = 1;
b21ed0a9 2166 numlen = 0; /* disallow underscores */
dff6d3cd 2167 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2168 s += numlen;
2169 }
2170 else {
a863c7d1 2171 dTHR;
3280af22
NIS		 2172 if (RsPARA(PL_nrs)) {
2173 PL_ors = "\n\n";
2174 PL_orslen = 2;
c07a80fd 2175 }
2176 else
3280af22
NIS		 2177 PL_ors = SvPV(PL_nrs, PL_orslen);
2178 PL_ors = savepvn(PL_ors, PL_orslen);
79072805
LW		 2179 }
2180 return s;
1a30305b 2181 case 'M':
bbce6d69 2182 forbid_setid("-M"); /* XXX ? */
1a30305b 2183 /* FALL THROUGH */
2184 case 'm':
bbce6d69 2185 forbid_setid("-m"); /* XXX ? */
1a30305b 2186 if (*++s) {
a5f75d66 2187 char *start;
11343788 2188 SV *sv;
a5f75d66
AD		 2189 char *use = "use ";
2190 /* -M-foo == 'no foo' */
2191 if (*s == '-') { use = "no "; ++s; }
11343788 2192 sv = newSVpv(use,0);
a5f75d66 2193 start = s;
1a30305b 2194 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2195 while(isALNUM(*s) || *s==':') ++s;
2196 if (*s != '=') {
11343788 2197 sv_catpv(sv, start);
c07a80fd 2198 if (*(start-1) == 'm') {
2199 if (*s != '\0')
cea2e8a9 2200 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2201 sv_catpv( sv, " ()");
c07a80fd 2202 }
2203 } else {
6df41af2 2204 if (s == start)
be98fb35
GS		 2205 Perl_croak(aTHX_ "Module name required with -%c option",
2206 s[-1]);
11343788
MB		 2207 sv_catpvn(sv, start, s-start);
2208 sv_catpv(sv, " split(/,/,q{");
2209 sv_catpv(sv, ++s);
2210 sv_catpv(sv, "})");
c07a80fd 2211 }
1a30305b 2212 s += strlen(s);
5c831c24 2213 if (!PL_preambleav)
3280af22
NIS		 2214 PL_preambleav = newAV();
2215 av_push(PL_preambleav, sv);
1a30305b 2216 }
2217 else
cea2e8a9 2218 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2219 return s;
79072805 2220 case 'n':
3280af22 2221 PL_minus_n = TRUE;
79072805
LW		 2222 s++;
2223 return s;
2224 case 'p':
3280af22 2225 PL_minus_p = TRUE;
79072805
LW		 2226 s++;
2227 return s;
2228 case 's':
bbce6d69 2229 forbid_setid("-s");
3280af22 2230 PL_doswitches = TRUE;
79072805
LW		 2231 s++;
2232 return s;
463ee0b2 2233 case 'T':
3280af22 2234 if (!PL_tainting)
cea2e8a9 2235 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2236 s++;
2237 return s;
79072805 2238 case 'u':
bf4acbe4
GS		 2239#ifdef MACOS_TRADITIONAL
2240 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2241#endif
3280af22 2242 PL_do_undump = TRUE;
79072805
LW		 2243 s++;
2244 return s;
2245 case 'U':
3280af22 2246 PL_unsafe = TRUE;
79072805
LW		 2247 s++;
2248 return s;
2249 case 'v':
b0e47665
GS		 2250 PerlIO_printf(PerlIO_stdout(),
2251 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2252 PL_patchlevel, ARCHNAME));
fb73857a 2253#if defined(LOCAL_PATCH_COUNT)
2254 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2255 PerlIO_printf(PerlIO_stdout(),
2256 "\n(with %d registered patch%s, "
2257 "see perl -V for more detail)",
2258 (int)LOCAL_PATCH_COUNT,
2259 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2260#endif
1a30305b 2261
b0e47665
GS		 2262 PerlIO_printf(PerlIO_stdout(),
2263 "\n\nCopyright 1987-2000, Larry Wall\n");
eae9c151
JH		 2264#ifdef MACOS_TRADITIONAL
2265 PerlIO_printf(PerlIO_stdout(),
2266 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2267#endif
79072805 2268#ifdef MSDOS
b0e47665
GS		 2269 PerlIO_printf(PerlIO_stdout(),
2270 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2271#endif
2272#ifdef DJGPP
b0e47665
GS		 2273 PerlIO_printf(PerlIO_stdout(),
2274 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2275 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2276#endif
79072805 2277#ifdef OS2
b0e47665
GS		 2278 PerlIO_printf(PerlIO_stdout(),
2279 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2280 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2281#endif
79072805 2282#ifdef atarist
b0e47665
GS		 2283 PerlIO_printf(PerlIO_stdout(),
2284 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2285#endif
a3f9223b 2286#ifdef __BEOS__
b0e47665
GS		 2287 PerlIO_printf(PerlIO_stdout(),
2288 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2289#endif
1d84e8df 2290#ifdef MPE
b0e47665
GS		 2291 PerlIO_printf(PerlIO_stdout(),
2292 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2293#endif
9d116dd7 2294#ifdef OEMVS
b0e47665
GS		 2295 PerlIO_printf(PerlIO_stdout(),
2296 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2297#endif
495c5fdc 2298#ifdef __VOS__
b0e47665
GS		 2299 PerlIO_printf(PerlIO_stdout(),
2300 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2301#endif
092bebab 2302#ifdef __OPEN_VM
b0e47665
GS		 2303 PerlIO_printf(PerlIO_stdout(),
2304 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2305#endif
a1a0e61e 2306#ifdef POSIX_BC
b0e47665
GS		 2307 PerlIO_printf(PerlIO_stdout(),
2308 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2309#endif
61ae2fbf 2310#ifdef __MINT__
b0e47665
GS		 2311 PerlIO_printf(PerlIO_stdout(),
2312 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2313#endif
f83d2536 2314#ifdef EPOC
b0e47665
GS		 2315 PerlIO_printf(PerlIO_stdout(),
2316 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2317#endif
baed7233
DL		 2318#ifdef BINARY_BUILD_NOTICE
2319 BINARY_BUILD_NOTICE;
2320#endif
b0e47665
GS		 2321 PerlIO_printf(PerlIO_stdout(),
2322 "\n\
79072805 2323Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2324GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2325Complete documentation for Perl, including FAQ lists, should be found on\n\
2326this system using `man perl' or `perldoc perl'. If you have access to the\n\
2327Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2328 PerlProc_exit(0);
79072805 2329 case 'w':
599cee73
PM		 2330 if (! (PL_dowarn & G_WARN_ALL_MASK))
2331 PL_dowarn |= G_WARN_ON;
2332 s++;
2333 return s;
2334 case 'W':
2335 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2336 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2337 s++;
2338 return s;
2339 case 'X':
2340 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2341 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2342 s++;
2343 return s;
a0d0e21e 2344 case '*':
79072805
LW		 2345 case ' ':
2346 if (s[1] == '-') /* Additional switches on #! line. */
2347 return s+2;
2348 break;
a0d0e21e 2349 case '-':
79072805 2350 case 0:
51882d45 2351#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2352 case '\r':
2353#endif
79072805
LW		 2354 case '\n':
2355 case '\t':
2356 break;
aa689395 2357#ifdef ALTERNATE_SHEBANG
2358 case 'S': /* OS/2 needs -S on "extproc" line. */
2359 break;
2360#endif
a0d0e21e 2361 case 'P':
3280af22 2362 if (PL_preprocess)
a0d0e21e
LW		 2363 return s+1;
2364 /* FALL THROUGH */
79072805 2365 default:
cea2e8a9 2366 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2367 }
2368 return Nullch;
2369}
2370
2371/* compliments of Tom Christiansen */
2372
2373/* unexec() can be found in the Gnu emacs distribution */
ee580363 2374/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2375
2376void
864dbfa3 2377Perl_my_unexec(pTHX)
79072805
LW		 2378{
2379#ifdef UNEXEC
46fc3d4c 2380 SV* prog;
2381 SV* file;
ee580363 2382 int status = 1;
79072805
LW		 2383 extern int etext;
2384
ee580363 2385 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2386 sv_catpv(prog, "/perl");
6b88bc9c 2387 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2388 sv_catpv(file, ".perldump");
79072805 2389
ee580363
GS		 2390 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2391 /* unexec prints msg to stderr in case of failure */
6ad3d225 2392 PerlProc_exit(status);
79072805 2393#else
a5f75d66
AD		 2394# ifdef VMS
2395# include <lib$routines.h>
2396 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2397# else
79072805 2398 ABORT(); /* for use with undump */
aa689395 2399# endif
a5f75d66 2400#endif
79072805
LW		 2401}
2402
cb68f92d
GS		 2403/* initialize curinterp */
2404STATIC void
cea2e8a9 2405S_init_interp(pTHX)
cb68f92d
GS		 2406{
2407
066ef5b5 2408#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2409#define I_REINIT \
6b88bc9c
GS		 2410 STMT_START { \
2411 PL_chopset = " \n-"; \
2412 PL_copline = NOLINE; \
2413 PL_curcop = &PL_compiling;\
2414 PL_curcopdb = NULL; \
2415 PL_dbargs = 0; \
3967c732 2416 PL_dumpindent = 4; \
6b88bc9c
GS		 2417 PL_laststatval = -1; \
2418 PL_laststype = OP_STAT; \
2419 PL_maxscream = -1; \
2420 PL_maxsysfd = MAXSYSFD; \
2421 PL_statname = Nullsv; \
2422 PL_tmps_floor = -1; \
2423 PL_tmps_ix = -1; \
2424 PL_op_mask = NULL; \
6b88bc9c
GS		 2425 PL_laststatval = -1; \
2426 PL_laststype = OP_STAT; \
2427 PL_mess_sv = Nullsv; \
2428 PL_splitstr = " "; \
2429 PL_generation = 100; \
2430 PL_exitlist = NULL; \
2431 PL_exitlistlen = 0; \
2432 PL_regindent = 0; \
2433 PL_in_clean_objs = FALSE; \
2434 PL_in_clean_all = FALSE; \
2435 PL_profiledata = NULL; \
2436 PL_rsfp = Nullfp; \
2437 PL_rsfp_filters = Nullav; \
24d3c518 2438 PL_dirty = FALSE; \
cb68f92d 2439 } STMT_END
9666903d 2440 I_REINIT;
066ef5b5
GS		 2441#else
2442# ifdef MULTIPLICITY
2443# define PERLVAR(var,type)
51371543 2444# define PERLVARA(var,n,type)
cea2e8a9 2445# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2446# if defined(USE_THREADS)
2447# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2448# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2449# else /* !USE_THREADS */
2450# define PERLVARI(var,type,init) aTHX->var = init;
2451# define PERLVARIC(var,type,init) aTHX->var = init;
2452# endif /* USE_THREADS */
cea2e8a9 2453# else
c5be433b
GS		 2454# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2455# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2456# endif
066ef5b5
GS		 2457# include "intrpvar.h"
2458# ifndef USE_THREADS
2459# include "thrdvar.h"
2460# endif
2461# undef PERLVAR
51371543 2462# undef PERLVARA
066ef5b5
GS		 2463# undef PERLVARI
2464# undef PERLVARIC
3967c732 2465# else
066ef5b5 2466# define PERLVAR(var,type)
51371543 2467# define PERLVARA(var,n,type)
533c011a
NIS		 2468# define PERLVARI(var,type,init) PL_##var = init;
2469# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2470# include "intrpvar.h"
2471# ifndef USE_THREADS
2472# include "thrdvar.h"
2473# endif
2474# undef PERLVAR
51371543 2475# undef PERLVARA
066ef5b5
GS		 2476# undef PERLVARI
2477# undef PERLVARIC
2478# endif
cb68f92d
GS		 2479#endif
2480
cb68f92d
GS		 2481}
2482
76e3520e 2483STATIC void
cea2e8a9 2484S_init_main_stash(pTHX)
79072805 2485{
11343788 2486 dTHR;
463ee0b2 2487 GV *gv;
6e72f9df 2488
2489 /* Note that strtab is a rather special HV. Assumptions are made
2490 about not iterating on it, and not adding tie magic to it.
2491 It is properly deallocated in perl_destruct() */
3280af22 2492 PL_strtab = newHV();
5f08fbcd
GS		 2493#ifdef USE_THREADS
2494 MUTEX_INIT(&PL_strtab_mutex);
2495#endif
3280af22
NIS		 2496 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2497 hv_ksplit(PL_strtab, 512);
6e72f9df 2498
3280af22 2499 PL_curstash = PL_defstash = newHV();
79cb57f6 2500 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2501 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2502 SvREFCNT_dec(GvHV(gv));
3280af22 2503 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2504 SvREADONLY_on(gv);
3280af22
NIS		 2505 HvNAME(PL_defstash) = savepv("main");
2506 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2507 GvMULTI_on(PL_incgv);
2508 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2509 GvMULTI_on(PL_hintgv);
2510 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2511 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2512 GvMULTI_on(PL_errgv);
2513 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2514 GvMULTI_on(PL_replgv);
cea2e8a9 2515 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2516 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2517 sv_setpvn(ERRSV, "", 0);
3280af22 2518 PL_curstash = PL_defstash;
11faa288 2519 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2520 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2521 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2522 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2523 /* We must init $/ before switches are processed. */
864dbfa3 2524 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2525}
2526
76e3520e 2527STATIC void
cea2e8a9 2528S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2529{
0f15f207 2530 dTHR;
2a92aaa0 2531
6c4ab083 2532 *fdscript = -1;
79072805 2533
3280af22
NIS		 2534 if (PL_e_script) {
2535 PL_origfilename = savepv("-e");
96436eeb 2536 }
6c4ab083
GS		 2537 else {
2538 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2539 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2540
2541 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2542 char *s = scriptname + 8;
2543 *fdscript = atoi(s);
2544 while (isDIGIT(*s))
2545 s++;
2546 if (*s) {
2547 scriptname = savepv(s + 1);
3280af22
NIS		 2548 Safefree(PL_origfilename);
2549 PL_origfilename = scriptname;
6c4ab083
GS		 2550 }
2551 }
2552 }
2553
f4dd75d9
GS		 2554#ifdef USE_ITHREADS
2555 Safefree(CopFILE(PL_curcop));
2556#else
2557 SvREFCNT_dec(CopFILEGV(PL_curcop));
2558#endif
57843af0 2559 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2560 if (strEQ(PL_origfilename,"-"))
79072805 2561 scriptname = "";
01f988be 2562 if (*fdscript >= 0) {
3280af22 2563 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2564#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2565 if (PL_rsfp)
2566 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2567#endif
2568 }
3280af22 2569 else if (PL_preprocess) {
46fc3d4c 2570 char *cpp_cfg = CPPSTDIN;
79cb57f6 2571 SV *cpp = newSVpvn("",0);
46fc3d4c 2572 SV *cmd = NEWSV(0,0);
2573
2574 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2575 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2576 sv_catpv(cpp, cpp_cfg);
79072805 2577
0df16ed7 2578 sv_catpvn(sv, "-I", 2);
fed7345c 2579 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2580
52853b95 2581#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2582 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2583sed %s -e \"/^[^#]/b\" \
2584 -e \"/^#[ ]*include[ ]/b\" \
2585 -e \"/^#[ ]*define[ ]/b\" \
2586 -e \"/^#[ ]*if[ ]/b\" \
2587 -e \"/^#[ ]*ifdef[ ]/b\" \
2588 -e \"/^#[ ]*ifndef[ ]/b\" \
2589 -e \"/^#[ ]*else/b\" \
2590 -e \"/^#[ ]*elif[ ]/b\" \
2591 -e \"/^#[ ]*undef[ ]/b\" \
2592 -e \"/^#[ ]*endif/b\" \
2593 -e \"s/^#.*//\" \
894356b3 2594 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2595 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2596#else
092bebab 2597# ifdef __OPEN_VM
cea2e8a9 2598 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2599%s %s -e '/^[^#]/b' \
2600 -e '/^#[ ]*include[ ]/b' \
2601 -e '/^#[ ]*define[ ]/b' \
2602 -e '/^#[ ]*if[ ]/b' \
2603 -e '/^#[ ]*ifdef[ ]/b' \
2604 -e '/^#[ ]*ifndef[ ]/b' \
2605 -e '/^#[ ]*else/b' \
2606 -e '/^#[ ]*elif[ ]/b' \
2607 -e '/^#[ ]*undef[ ]/b' \
2608 -e '/^#[ ]*endif/b' \
2609 -e 's/^[ ]*#.*//' \
894356b3 2610 %s | %"SVf" %"SVf" %s",
092bebab 2611# else
cea2e8a9 2612 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2613%s %s -e '/^[^#]/b' \
2614 -e '/^#[ ]*include[ ]/b' \
2615 -e '/^#[ ]*define[ ]/b' \
2616 -e '/^#[ ]*if[ ]/b' \
2617 -e '/^#[ ]*ifdef[ ]/b' \
2618 -e '/^#[ ]*ifndef[ ]/b' \
2619 -e '/^#[ ]*else/b' \
2620 -e '/^#[ ]*elif[ ]/b' \
2621 -e '/^#[ ]*undef[ ]/b' \
2622 -e '/^#[ ]*endif/b' \
2623 -e 's/^[ ]*#.*//' \
894356b3 2624 %s | %"SVf" -C %"SVf" %s",
092bebab 2625# endif
79072805
LW		 2626#ifdef LOC_SED
2627 LOC_SED,
2628#else
2629 "sed",
2630#endif
3280af22 2631 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2632#endif
46fc3d4c 2633 scriptname, cpp, sv, CPPMINUS);
3280af22 2634 PL_doextract = FALSE;
79072805 2635#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2636 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2637#ifdef HAS_SETEUID
b28d0864 2638 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2639#else
2640#ifdef HAS_SETREUID
b28d0864 2641 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2642#else
2643#ifdef HAS_SETRESUID
b28d0864 2644 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2645#else
b28d0864 2646 PerlProc_setuid(PL_uid);
79072805
LW		 2647#endif
2648#endif
85e6fe83 2649#endif
b28d0864 2650 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2651 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2652 }
2653#endif /* IAMSUID */
3280af22 2654 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2655 SvREFCNT_dec(cmd);
2656 SvREFCNT_dec(cpp);
79072805
LW		 2657 }
2658 else if (!*scriptname) {
bbce6d69 2659 forbid_setid("program input from stdin");
3280af22 2660 PL_rsfp = PerlIO_stdin();
79072805 2661 }
96436eeb 2662 else {
3280af22 2663 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2664#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2665 if (PL_rsfp)
2666 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2667#endif
2668 }
3280af22 2669 if (!PL_rsfp) {
13281fa4 2670#ifdef DOSUID
a687059c 2671#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2672 if (PL_euid &&
cc49e20b 2673 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2674 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2675 {
46fc3d4c 2676 /* try again */
a7cb1f99 2677 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2678 (int)PERL_REVISION, (int)PERL_VERSION,
2679 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2680 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2681 }
2682#endif
2683#endif
cea2e8a9 2684 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2685 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2686 }
79072805 2687}
8d063cd8 2688
7b89560d
JH		 2689/* Mention
2690 * I_SYSSTATVFS HAS_FSTATVFS
2691 * I_SYSMOUNT
c890dc6c 2692 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2693 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2694 * here so that metaconfig picks them up. */
2695
104d25b7 2696#ifdef IAMSUID
864dbfa3 2697STATIC int
e688b231 2698S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2699{
0545a864
JH		 2700 int check_okay = 0; /* able to do all the required sys/libcalls */
2701 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2702/*
ad27e871 2703 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2704 * fstatvfs() is UNIX98.
0545a864 2705 * fstatfs() is 4.3 BSD.
ad27e871 2706 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2707 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2708 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2709 */
2710
6439433f
JH		 2711#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2712
2713# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2714 defined(HAS_FSTATVFS)
2715# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2716 struct statvfs stfs;
6439433f 2717
104d25b7
JH		 2718 check_okay = fstatvfs(fd, &stfs) == 0;
2719 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f
JH		 2720# endif /* fstatvfs */
2721
2722# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2723 defined(PERL_MOUNT_NOSUID) && \
2724 defined(HAS_FSTATFS) && \
2725 defined(HAS_STRUCT_STATFS) && \
2726 defined(HAS_STRUCT_STATFS_F_FLAGS)
2727# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2728 struct statfs stfs;
6439433f 2729
104d25b7 2730 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2731 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2732# endif /* fstatfs */
2733
2734# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2735 defined(PERL_MOUNT_NOSUID) && \
2736 defined(HAS_FSTAT) && \
2737 defined(HAS_USTAT) && \
2738 defined(HAS_GETMNT) && \
2739 defined(HAS_STRUCT_FS_DATA) && \
2740 defined(NOSTAT_ONE)
2741# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2742 struct stat fdst;
6439433f 2743
0545a864 2744 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2745 struct ustat us;
2746 if (ustat(fdst.st_dev, &us) == 0) {
2747 struct fs_data fsd;
2748 /* NOSTAT_ONE here because we're not examining fields which
2749 * vary between that case and STAT_ONE. */
ad27e871 2750 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2751 size_t cmplen = sizeof(us.f_fname);
2752 if (sizeof(fsd.fd_req.path) < cmplen)
2753 cmplen = sizeof(fsd.fd_req.path);
2754 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2755 fdst.st_dev == fsd.fd_req.dev) {
2756 check_okay = 1;
2757 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2758 }
2759 }
2760 }
2761 }
0545a864 2762 }
6439433f
JH		 2763# endif /* fstat+ustat+getmnt */
2764
2765# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2766 defined(HAS_GETMNTENT) && \
2767 defined(HAS_HASMNTOPT) && \
2768 defined(MNTOPT_NOSUID)
2769# define FD_ON_NOSUID_CHECK_OKAY
2770 FILE *mtab = fopen("/etc/mtab", "r");
2771 struct mntent *entry;
2772 struct stat stb, fsb;
104d25b7
JH		 2773
2774 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2775 while (entry = getmntent(mtab)) {
2776 if (stat(entry->mnt_dir, &fsb) == 0
2777 && fsb.st_dev == stb.st_dev)
2778 {
2779 /* found the filesystem */
2780 check_okay = 1;
2781 if (hasmntopt(entry, MNTOPT_NOSUID))
2782 on_nosuid = 1;
2783 break;
2784 } /* A single fs may well fail its stat(). */
2785 }
104d25b7
JH		 2786 }
2787 if (mtab)
6439433f
JH		 2788 fclose(mtab);
2789# endif /* getmntent+hasmntopt */
0545a864 2790
104d25b7 2791 if (!check_okay)
0545a864 2792 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2793 return on_nosuid;
2794}
2795#endif /* IAMSUID */
2796
76e3520e 2797STATIC void
cea2e8a9 2798S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2799{
155aba94 2800#ifdef IAMSUID
96436eeb 2801 int which;
155aba94 2802#endif
96436eeb 2803
13281fa4
LW		 2804 /* do we need to emulate setuid on scripts? */
2805
2806 /* This code is for those BSD systems that have setuid #! scripts disabled
2807 * in the kernel because of a security problem. Merely defining DOSUID
2808 * in perl will not fix that problem, but if you have disabled setuid
2809 * scripts in the kernel, this will attempt to emulate setuid and setgid
2810 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2811 * root version must be called suidperl or sperlN.NNN. If regular perl
2812 * discovers that it has opened a setuid script, it calls suidperl with
2813 * the same argv that it had. If suidperl finds that the script it has
2814 * just opened is NOT setuid root, it sets the effective uid back to the
2815 * uid. We don't just make perl setuid root because that loses the
2816 * effective uid we had before invoking perl, if it was different from the
2817 * uid.
13281fa4
LW		 2818 *
2819 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2820 * be defined in suidperl only. suidperl must be setuid root. The
2821 * Configure script will set this up for you if you want it.
2822 */
a687059c 2823
13281fa4 2824#ifdef DOSUID
ea0efc06 2825 dTHR;
6e72f9df 2826 char *s, *s2;
a0d0e21e 2827
b28d0864 2828 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2829 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2830 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2831 I32 len;
2d8e6c8d 2832 STRLEN n_a;
13281fa4 2833
a687059c 2834#ifdef IAMSUID
fe14fcc3 2835#ifndef HAS_SETREUID
a687059c
LW		 2836 /* On this access check to make sure the directories are readable,
2837 * there is actually a small window that the user could use to make
2838 * filename point to an accessible directory. So there is a faint
2839 * chance that someone could execute a setuid script down in a
2840 * non-accessible directory. I don't know what to do about that.
2841 * But I don't think it's too important. The manual lies when
2842 * it says access() is useful in setuid programs.
2843 */
cc49e20b 2844 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2845 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2846#else
2847 /* If we can swap euid and uid, then we can determine access rights
2848 * with a simple stat of the file, and then compare device and
2849 * inode to make sure we did stat() on the same file we opened.
2850 * Then we just have to make sure he or she can execute it.
2851 */
2852 {
2853 struct stat tmpstatbuf;
2854
85e6fe83
LW		 2855 if (
2856#ifdef HAS_SETREUID
b28d0864 2857 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2858#else
2859# if HAS_SETRESUID
b28d0864 2860 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2861# endif
85e6fe83 2862#endif
b28d0864 2863 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2864 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2865 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2866 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2867#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2868 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2869 Perl_croak(aTHX_ "Permission denied");
104d25b7 2870#endif
b28d0864
NIS		 2871 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2872 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2873 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2874 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2875 }
85e6fe83
LW		 2876 if (
2877#ifdef HAS_SETREUID
b28d0864 2878 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2879#else
2880# if defined(HAS_SETRESUID)
b28d0864 2881 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2882# endif
85e6fe83 2883#endif
b28d0864 2884 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2885 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2886 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2887 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2888 }
fe14fcc3 2889#endif /* HAS_SETREUID */
a687059c
LW		 2890#endif /* IAMSUID */
2891
b28d0864 2892 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2893 Perl_croak(aTHX_ "Permission denied");
b28d0864 2894 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2895 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2896 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2897 CopLINE_inc(PL_curcop);
6b88bc9c 2898 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2899 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2900 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2901 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2902 if (*s == ' ') s++;
45d8adaa 2903 while (!isSPACE(*s)) s++;
2d8e6c8d 2904 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2905 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2906 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2907 Perl_croak(aTHX_ "Not a perl script");
a687059c 2908 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2909 /*
2910 * #! arg must be what we saw above. They can invoke it by
2911 * mentioning suidperl explicitly, but they may not add any strange
2912 * arguments beyond what #! says if they do invoke suidperl that way.
2913 */
2914 len = strlen(validarg);
2915 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2916 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2917 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2918
2919#ifndef IAMSUID
b28d0864
NIS		 2920 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2921 PL_euid == PL_statbuf.st_uid)
2922 if (!PL_do_undump)
cea2e8a9 2923 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2924FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2925#endif /* IAMSUID */
13281fa4 2926
b28d0864
NIS		 2927 if (PL_euid) { /* oops, we're not the setuid root perl */
2928 (void)PerlIO_close(PL_rsfp);
13281fa4 2929#ifndef IAMSUID
46fc3d4c 2930 /* try again */
a7cb1f99 2931 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2932 (int)PERL_REVISION, (int)PERL_VERSION,
2933 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2934#endif
cea2e8a9 2935 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2936 }
2937
b28d0864 2938 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2939#ifdef HAS_SETEGID
b28d0864 2940 (void)setegid(PL_statbuf.st_gid);
a687059c 2941#else
fe14fcc3 2942#ifdef HAS_SETREGID
b28d0864 2943 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 2944#else
2945#ifdef HAS_SETRESGID
b28d0864 2946 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2947#else
b28d0864 2948 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 2949#endif
2950#endif
85e6fe83 2951#endif
b28d0864 2952 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2953 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2954 }
b28d0864
NIS		 2955 if (PL_statbuf.st_mode & S_ISUID) {
2956 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2957#ifdef HAS_SETEUID
b28d0864 2958 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2959#else
fe14fcc3 2960#ifdef HAS_SETREUID
b28d0864 2961 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 2962#else
2963#ifdef HAS_SETRESUID
b28d0864 2964 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2965#else
b28d0864 2966 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 2967#endif
2968#endif
85e6fe83 2969#endif
b28d0864 2970 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2971 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2972 }
b28d0864 2973 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2974#ifdef HAS_SETEUID
b28d0864 2975 (void)seteuid((Uid_t)PL_uid);
a687059c 2976#else
fe14fcc3 2977#ifdef HAS_SETREUID
b28d0864 2978 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2979#else
85e6fe83 2980#ifdef HAS_SETRESUID
b28d0864 2981 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2982#else
b28d0864 2983 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2984#endif
a687059c
LW		 2985#endif
2986#endif
b28d0864 2987 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2988 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2989 }
748a9306 2990 init_ids();
b28d0864 2991 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2992 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 2993 }
2994#ifdef IAMSUID
6b88bc9c 2995 else if (PL_preprocess)
cea2e8a9 2996 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2997 else if (fdscript >= 0)
cea2e8a9 2998 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 2999 else
cea2e8a9 3000 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3001
3002 /* We absolutely must clear out any saved ids here, so we */
3003 /* exec the real perl, substituting fd script for scriptname. */
3004 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3005 PerlIO_rewind(PL_rsfp);
3006 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3007 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3008 if (!PL_origargv[which])
cea2e8a9
GS		 3009 Perl_croak(aTHX_ "Permission denied");
3010 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3011 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3012#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3013 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3014#endif
a7cb1f99 3015 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3016 (int)PERL_REVISION, (int)PERL_VERSION,
3017 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3018 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3019#endif /* IAMSUID */
a687059c 3020#else /* !DOSUID */
3280af22 3021 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3022#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
96827780 3023 dTHR;
b28d0864
NIS		 3024 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3025 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3026 ||
b28d0864 3027 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3028 )
b28d0864 3029 if (!PL_do_undump)
cea2e8a9 3030 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3031FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3032#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3033 /* not set-id, must be wrapped */
a687059c 3034 }
13281fa4 3035#endif /* DOSUID */
79072805 3036}
13281fa4 3037
76e3520e 3038STATIC void
cea2e8a9 3039S_find_beginning(pTHX)
79072805 3040{
6e72f9df 3041 register char *s, *s2;
33b78306
LW		 3042
3043 /* skip forward in input to the real script? */
3044
bbce6d69 3045 forbid_setid("-x");
bf4acbe4
GS		 3046#ifdef MACOS_TRADITIONAL
3047 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3048
3049 while (PL_doextract || gMacPerl_AlwaysExtract) {
3050 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3051 if (!gMacPerl_AlwaysExtract)
3052 Perl_croak(aTHX_ "No Perl script found in input\n");
3053
3054 if (PL_doextract) /* require explicit override ? */
3055 if (!OverrideExtract(PL_origfilename))
3056 Perl_croak(aTHX_ "User aborted script\n");
3057 else
3058 PL_doextract = FALSE;
3059
3060 /* Pater peccavi, file does not have #! */
3061 PerlIO_rewind(PL_rsfp);
3062
3063 break;
3064 }
3065#else
3280af22
NIS		 3066 while (PL_doextract) {
3067 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3068 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3069#endif
6e72f9df 3070 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3071 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3072 PL_doextract = FALSE;
6e72f9df 3073 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3074 s2 = s;
3075 while (*s == ' ' || *s == '\t') s++;
3076 if (*s++ == '-') {
3077 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3078 if (strnEQ(s2-4,"perl",4))
3079 /*SUPPRESS 530*/
155aba94
GS		 3080 while ((s = moreswitches(s)))
3081 ;
33b78306 3082 }
83025b21
LW		 3083 }
3084 }
3085}
3086
afe37c7d 3087
76e3520e 3088STATIC void
cea2e8a9 3089S_init_ids(pTHX)
352d5a3a 3090{
d8eceb89
JH		 3091 PL_uid = PerlProc_getuid();
3092 PL_euid = PerlProc_geteuid();
3093 PL_gid = PerlProc_getgid();
3094 PL_egid = PerlProc_getegid();
748a9306 3095#ifdef VMS
b28d0864
NIS		 3096 PL_uid |= PL_gid << 16;
3097 PL_euid |= PL_egid << 16;
748a9306 3098#endif
3280af22 3099 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3100}
79072805 3101
76e3520e 3102STATIC void
cea2e8a9 3103S_forbid_setid(pTHX_ char *s)
bbce6d69 3104{
3280af22 3105 if (PL_euid != PL_uid)
cea2e8a9 3106 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3107 if (PL_egid != PL_gid)
cea2e8a9 3108 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3109}
3110
1ee4443e
IZ		 3111void
3112Perl_init_debugger(pTHX)
748a9306 3113{
11343788 3114 dTHR;
1ee4443e
IZ		 3115 HV *ostash = PL_curstash;
3116
3280af22
NIS		 3117 PL_curstash = PL_debstash;
3118 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3119 AvREAL_off(PL_dbargs);
3120 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3121 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3122 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3123 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22
NIS		 3124 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3125 sv_setiv(PL_DBsingle, 0);
3126 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3127 sv_setiv(PL_DBtrace, 0);
3128 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3129 sv_setiv(PL_DBsignal, 0);
1ee4443e 3130 PL_curstash = ostash;
352d5a3a
LW		 3131}
3132
2ce36478
SM		 3133#ifndef STRESS_REALLOC
3134#define REASONABLE(size) (size)
3135#else
3136#define REASONABLE(size) (1) /* unreasonable */
3137#endif
3138
11343788 3139void
cea2e8a9 3140Perl_init_stacks(pTHX)
79072805 3141{
e336de0d 3142 /* start with 128-item stack and 8K cxstack */
3280af22 3143 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3144 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3145 PL_curstackinfo->si_type = PERLSI_MAIN;
3146 PL_curstack = PL_curstackinfo->si_stack;
3147 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3148
3280af22
NIS		 3149 PL_stack_base = AvARRAY(PL_curstack);
3150 PL_stack_sp = PL_stack_base;
3151 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3152
3280af22
NIS		 3153 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3154 PL_tmps_floor = -1;
3155 PL_tmps_ix = -1;
3156 PL_tmps_max = REASONABLE(128);
8990e307 3157
3280af22
NIS		 3158 New(54,PL_markstack,REASONABLE(32),I32);
3159 PL_markstack_ptr = PL_markstack;
3160 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3161
ce2f7c3b 3162 SET_MARK_OFFSET;
e336de0d 3163
3280af22
NIS		 3164 New(54,PL_scopestack,REASONABLE(32),I32);
3165 PL_scopestack_ix = 0;
3166 PL_scopestack_max = REASONABLE(32);
79072805 3167
3280af22
NIS		 3168 New(54,PL_savestack,REASONABLE(128),ANY);
3169 PL_savestack_ix = 0;
3170 PL_savestack_max = REASONABLE(128);
79072805 3171
3280af22
NIS		 3172 New(54,PL_retstack,REASONABLE(16),OP*);
3173 PL_retstack_ix = 0;
3174 PL_retstack_max = REASONABLE(16);
378cc40b 3175}
33b78306 3176
2ce36478
SM		 3177#undef REASONABLE
3178
76e3520e 3179STATIC void
cea2e8a9 3180S_nuke_stacks(pTHX)
6e72f9df 3181{
e858de61 3182 dTHR;
3280af22
NIS		 3183 while (PL_curstackinfo->si_next)
3184 PL_curstackinfo = PL_curstackinfo->si_next;
3185 while (PL_curstackinfo) {
3186 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3187 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3188 Safefree(PL_curstackinfo->si_cxstack);
3189 Safefree(PL_curstackinfo);
3190 PL_curstackinfo = p;
e336de0d 3191 }
3280af22
NIS		 3192 Safefree(PL_tmps_stack);
3193 Safefree(PL_markstack);
3194 Safefree(PL_scopestack);
3195 Safefree(PL_savestack);
3196 Safefree(PL_retstack);
378cc40b 3197}
33b78306 3198
76e3520e 3199#ifndef PERL_OBJECT
760ac839 3200static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3201#endif
7aa04957 3202
76e3520e 3203STATIC void
cea2e8a9 3204S_init_lexer(pTHX)
8990e307 3205{
76e3520e
GS		 3206#ifdef PERL_OBJECT
3207 PerlIO *tmpfp;
3208#endif
3280af22
NIS		 3209 tmpfp = PL_rsfp;
3210 PL_rsfp = Nullfp;
3211 lex_start(PL_linestr);
3212 PL_rsfp = tmpfp;
79cb57f6 3213 PL_subname = newSVpvn("main",4);
8990e307
LW		 3214}
3215
76e3520e 3216STATIC void
cea2e8a9 3217S_init_predump_symbols(pTHX)
45d8adaa 3218{
11343788 3219 dTHR;
93a17b20 3220 GV *tmpgv;
af8c498a 3221 IO *io;
79072805 3222
864dbfa3 3223 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3224 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3225 GvMULTI_on(PL_stdingv);
af8c498a
GS		 3226 io = GvIOp(PL_stdingv);
3227 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3228 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3229 GvMULTI_on(tmpgv);
af8c498a 3230 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3231
85e6fe83 3232 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3233 GvMULTI_on(tmpgv);
af8c498a
GS		 3234 io = GvIOp(tmpgv);
3235 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3236 setdefout(tmpgv);
adbc6bb1 3237 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3238 GvMULTI_on(tmpgv);
af8c498a 3239 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3240
bf49b057
GS		 3241 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3242 GvMULTI_on(PL_stderrgv);
3243 io = GvIOp(PL_stderrgv);
af8c498a 3244 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3245 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3246 GvMULTI_on(tmpgv);
af8c498a 3247 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3248
3280af22 3249 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3250
bf4acbe4
GS		 3251 if (PL_osname)
3252 Safefree(PL_osname);
3253 PL_osname = savepv(OSNAME);
79072805 3254}
33b78306 3255
76e3520e 3256STATIC void
cea2e8a9 3257S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3258{
a863c7d1 3259 dTHR;
79072805
LW		 3260 char *s;
3261 SV *sv;
3262 GV* tmpgv;
fe14fcc3 3263
79072805 3264 argc--,argv++; /* skip name of script */
3280af22 3265 if (PL_doswitches) {
79072805
LW		 3266 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3267 if (!argv[0][1])
3268 break;
379d538a 3269 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3270 argc--,argv++;
3271 break;
3272 }
155aba94 3273 if ((s = strchr(argv[0], '='))) {
79072805 3274 *s++ = '\0';
85e6fe83 3275 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3276 }
3277 else
85e6fe83 3278 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3279 }
79072805 3280 }
3280af22
NIS		 3281 PL_toptarget = NEWSV(0,0);
3282 sv_upgrade(PL_toptarget, SVt_PVFM);
3283 sv_setpvn(PL_toptarget, "", 0);
3284 PL_bodytarget = NEWSV(0,0);
3285 sv_upgrade(PL_bodytarget, SVt_PVFM);
3286 sv_setpvn(PL_bodytarget, "", 0);
3287 PL_formtarget = PL_bodytarget;
79072805 3288
bbce6d69 3289 TAINT;
155aba94 3290 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3291#ifdef MACOS_TRADITIONAL
3292 /* $0 is not majick on a Mac */
3293 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3294#else
3280af22 3295 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3296 magicname("0", "0", 1);
bf4acbe4 3297#endif
79072805 3298 }
155aba94 3299 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3300#ifdef OS2
23da6c43 3301 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3302#else
3280af22 3303 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3304#endif
155aba94 3305 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3306 GvMULTI_on(PL_argvgv);
3307 (void)gv_AVadd(PL_argvgv);
3308 av_clear(GvAVn(PL_argvgv));
79072805 3309 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3310 SV *sv = newSVpv(argv[0],0);
3311 av_push(GvAVn(PL_argvgv),sv);
3312 if (PL_widesyscalls)
e84ff256 3313 (void)sv_utf8_decode(sv);
79072805
LW		 3314 }
3315 }
155aba94 3316 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3317 HV *hv;
3280af22
NIS		 3318 GvMULTI_on(PL_envgv);
3319 hv = GvHVn(PL_envgv);
3320 hv_magic(hv, PL_envgv, 'E');
bf4acbe4 3321#if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
4633a7c4
LW		 3322 /* Note that if the supplied env parameter is actually a copy
3323 of the global environ then it may now point to free'd memory
3324 if the environment has been modified since. To avoid this
3325 problem we treat env==NULL as meaning 'use the default'
3326 */
3327 if (!env)
3328 env = environ;
5aabfad6 3329 if (env != environ)
79072805
LW		 3330 environ[0] = Nullch;
3331 for (; *env; env++) {
93a17b20 3332 if (!(s = strchr(*env,'=')))
79072805
LW		 3333 continue;
3334 *s++ = '\0';
60ce6247 3335#if defined(MSDOS)
137443ea 3336 (void)strupr(*env);
3337#endif
79072805
LW		 3338 sv = newSVpv(s--,0);
3339 (void)hv_store(hv, *env, s - *env, sv, 0);
3340 *s = '=';
3e3baf6d
TB		 3341#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3342 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 3343 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 3344#endif
fe14fcc3 3345 }
4550b24a 3346#endif
3347#ifdef DYNAMIC_ENV_FETCH
3348 HvNAME(hv) = savepv(ENV_HV_NAME);
3349#endif
79072805 3350 }
bbce6d69 3351 TAINT_NOT;
155aba94 3352 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3353 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3354}
34de22dd 3355
76e3520e 3356STATIC void
cea2e8a9 3357S_init_perllib(pTHX)
34de22dd 3358{
85e6fe83 3359 char *s;
3280af22 3360 if (!PL_tainting) {
552a7a9b 3361#ifndef VMS
76e3520e 3362 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3363 if (s)
9c8a64f0 3364 incpush(s, TRUE, TRUE);
85e6fe83 3365 else
9c8a64f0 3366 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3367#else /* VMS */
3368 /* Treat PERL5?LIB as a possible search list logical name -- the
3369 * "natural" VMS idiom for a Unix path string. We allow each
3370 * element to be a set of |-separated directories for compatibility.
3371 */
3372 char buf[256];
3373 int idx = 0;
3374 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3375 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3376 else
9c8a64f0 3377 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3378#endif /* VMS */
85e6fe83 3379 }
34de22dd 3380
c90c0ff4 3381/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3382 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3383*/
4633a7c4 3384#ifdef APPLLIB_EXP
9c8a64f0 3385 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3386#endif
4633a7c4 3387
fed7345c 3388#ifdef ARCHLIB_EXP
9c8a64f0 3389 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3390#endif
bf4acbe4
GS		 3391#ifdef MACOS_TRADITIONAL
3392 {
3393 struct stat tmpstatbuf;
3394 SV * privdir = NEWSV(55, 0);
3395 char * macperl = PerlEnv_getenv("MACPERL");
3396
3397 if (!macperl)
3398 macperl = "";
3399
3400 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3401 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3402 incpush(SvPVX(privdir), TRUE, FALSE);
3403 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3404 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3405 incpush(SvPVX(privdir), TRUE, FALSE);
3406
3407 SvREFCNT_dec(privdir);
3408 }
3409 if (!PL_tainting)
3410 incpush(":", FALSE, FALSE);
3411#else
fed7345c 3412#ifndef PRIVLIB_EXP
65f19062 3413# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3414#endif
00dc2f4f 3415#if defined(WIN32)
9c8a64f0 3416 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3417#else
9c8a64f0 3418 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3419#endif
4633a7c4 3420
65f19062 3421#ifdef SITEARCH_EXP
3b290362
GS		 3422 /* sitearch is always relative to sitelib on Windows for
3423 * DLL-based path intuition to work correctly */
3424# if !defined(WIN32)
9c8a64f0 3425 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3426# endif
3427#endif
3428
4633a7c4 3429#ifdef SITELIB_EXP
65f19062 3430# if defined(WIN32)
9c8a64f0 3431 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3432# else
9c8a64f0 3433 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3434# endif
3435#endif
189d1e8d 3436
65f19062 3437#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3438 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3439#endif
65f19062
GS		 3440
3441#ifdef PERL_VENDORARCH_EXP
4ea817c6 3442 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3443 * DLL-based path intuition to work correctly */
3444# if !defined(WIN32)
9c8a64f0 3445 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3446# endif
4b03c463 3447#endif
65f19062
GS		 3448
3449#ifdef PERL_VENDORLIB_EXP
3450# if defined(WIN32)
9c8a64f0 3451 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3452# else
9c8a64f0 3453 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3454# endif
a3635516 3455#endif
65f19062
GS		 3456
3457#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3458 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3459#endif
65f19062 3460
3b777bb4
GS		 3461#ifdef PERL_OTHERLIBDIRS
3462 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3463#endif
3464
3280af22 3465 if (!PL_tainting)
9c8a64f0 3466 incpush(".", FALSE, FALSE);
bf4acbe4 3467#endif /* MACOS_TRADITIONAL */
774d564b 3468}
3469
3470#if defined(DOSISH)
3471# define PERLLIB_SEP ';'
3472#else
3473# if defined(VMS)
3474# define PERLLIB_SEP '|'
3475# else
bf4acbe4
GS		 3476# if defined(MACOS_TRADITIONAL)
3477# define PERLLIB_SEP ','
3478# else
3479# define PERLLIB_SEP ':'
3480# endif
774d564b 3481# endif
3482#endif
3483#ifndef PERLLIB_MANGLE
3484# define PERLLIB_MANGLE(s,n) (s)
3485#endif
3486
76e3520e 3487STATIC void
9c8a64f0 3488S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3489{
3490 SV *subdir = Nullsv;
774d564b 3491
3b290362 3492 if (!p || !*p)
774d564b 3493 return;
3494
9c8a64f0 3495 if (addsubdirs || addoldvers) {
00db4c45 3496 subdir = sv_newmortal();
774d564b 3497 }
3498
3499 /* Break at all separators */
3500 while (p && *p) {
8c52afec 3501 SV *libdir = NEWSV(55,0);
774d564b 3502 char *s;
3503
3504 /* skip any consecutive separators */
3505 while ( *p == PERLLIB_SEP ) {
3506 /* Uncomment the next line for PATH semantics */
79cb57f6 3507 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3508 p++;
3509 }
3510
3511 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3512 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3513 (STRLEN)(s - p));
3514 p = s + 1;
3515 }
3516 else {
3517 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3518 p = Nullch; /* break out */
3519 }
bf4acbe4
GS		 3520#ifdef MACOS_TRADITIONAL
3521 if (!strchr(SvPVX(libdir), ':'))
3522 sv_insert(libdir, 0, 0, ":", 1);
3523 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3524 sv_catpv(libdir, ":");
3525#endif
774d564b 3526
3527 /*
3528 * BEFORE pushing libdir onto @INC we may first push version- and
3529 * archname-specific sub-directories.
3530 */
9c8a64f0 3531 if (addsubdirs || addoldvers) {
29d82f8d 3532#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3533 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3534 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3535 const char **incver;
3536#endif
774d564b 3537 struct stat tmpstatbuf;
aa689395 3538#ifdef VMS
3539 char *unix;
3540 STRLEN len;
774d564b 3541
2d8e6c8d 3542 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3543 len = strlen(unix);
3544 while (unix[len-1] == '/') len--; /* Cosmetic */
3545 sv_usepvn(libdir,unix,len);
3546 }
3547 else
bf49b057 3548 PerlIO_printf(Perl_error_log,
aa689395 3549 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3550 SvPV(libdir,len));
aa689395 3551#endif
9c8a64f0 3552 if (addsubdirs) {
bf4acbe4
GS		 3553#ifdef MACOS_TRADITIONAL
3554#define PERL_AV_SUFFIX_FMT ""
3555#define PERL_ARCH_FMT ":%s"
3556#else
3557#define PERL_AV_SUFFIX_FMT "/"
3558#define PERL_ARCH_FMT "/%s"
3559#endif
9c8a64f0 3560 /* .../version/archname if -d .../version/archname */
bf4acbe4 3561 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
9c8a64f0
GS		 3562 libdir,
3563 (int)PERL_REVISION, (int)PERL_VERSION,
3564 (int)PERL_SUBVERSION, ARCHNAME);
3565 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3566 S_ISDIR(tmpstatbuf.st_mode))
3567 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3568
9c8a64f0 3569 /* .../version if -d .../version */
bf4acbe4 3570 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
9c8a64f0
GS		 3571 (int)PERL_REVISION, (int)PERL_VERSION,
3572 (int)PERL_SUBVERSION);
3573 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3574 S_ISDIR(tmpstatbuf.st_mode))
3575 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3576
3577 /* .../archname if -d .../archname */
bf4acbe4 3578 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3579 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3580 S_ISDIR(tmpstatbuf.st_mode))
3581 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3582 }
9c8a64f0 3583
9c8a64f0 3584#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3585 if (addoldvers) {
9c8a64f0
GS		 3586 for (incver = incverlist; *incver; incver++) {
3587 /* .../xxx if -d .../xxx */
bf4acbe4 3588 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3589 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3590 S_ISDIR(tmpstatbuf.st_mode))
3591 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3592 }
3593 }
29d82f8d 3594#endif
774d564b 3595 }
3596
3597 /* finally push this lib directory on the end of @INC */
3280af22 3598 av_push(GvAVn(PL_incgv), libdir);
774d564b 3599 }
34de22dd 3600}
93a17b20 3601
199100c8 3602#ifdef USE_THREADS
76e3520e 3603STATIC struct perl_thread *
cea2e8a9 3604S_init_main_thread(pTHX)
199100c8 3605{
c5be433b 3606#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3607 struct perl_thread *thr;
cea2e8a9 3608#endif
199100c8
MB		 3609 XPV *xpv;
3610
52e1cb5e 3611 Newz(53, thr, 1, struct perl_thread);
533c011a 3612 PL_curcop = &PL_compiling;
c5be433b 3613 thr->interp = PERL_GET_INTERP;
199100c8 3614 thr->cvcache = newHV();
54b9620d 3615 thr->threadsv = newAV();
940cb80d 3616 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3617 thr->specific = newAV();
3618 thr->flags = THRf_R_JOINABLE;
3619 MUTEX_INIT(&thr->mutex);
3620 /* Handcraft thrsv similarly to mess_sv */
533c011a 3621 New(53, PL_thrsv, 1, SV);
199100c8 3622 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3623 SvFLAGS(PL_thrsv) = SVt_PV;
3624 SvANY(PL_thrsv) = (void*)xpv;
3625 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3626 SvPVX(PL_thrsv) = (char*)thr;
3627 SvCUR_set(PL_thrsv, sizeof(thr));
3628 SvLEN_set(PL_thrsv, sizeof(thr));
3629 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3630 thr->oursv = PL_thrsv;
3631 PL_chopset = " \n-";
3967c732 3632 PL_dumpindent = 4;
533c011a
NIS		 3633
3634 MUTEX_LOCK(&PL_threads_mutex);
3635 PL_nthreads++;
199100c8
MB		 3636 thr->tid = 0;
3637 thr->next = thr;
3638 thr->prev = thr;
533c011a 3639 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3640
4b026b9e 3641#ifdef HAVE_THREAD_INTERN
4f63d024 3642 Perl_init_thread_intern(thr);
235db74f
GS		 3643#endif
3644
3645#ifdef SET_THREAD_SELF
3646 SET_THREAD_SELF(thr);
199100c8
MB		 3647#else
3648 thr->self = pthread_self();
235db74f 3649#endif /* SET_THREAD_SELF */
06d86050 3650 PERL_SET_THX(thr);
199100c8
MB		 3651
3652 /*
3653 * These must come after the SET_THR because sv_setpvn does
3654 * SvTAINT and the taint fields require dTHR.
3655 */
533c011a
NIS		 3656 PL_toptarget = NEWSV(0,0);
3657 sv_upgrade(PL_toptarget, SVt_PVFM);
3658 sv_setpvn(PL_toptarget, "", 0);
3659 PL_bodytarget = NEWSV(0,0);
3660 sv_upgrade(PL_bodytarget, SVt_PVFM);
3661 sv_setpvn(PL_bodytarget, "", 0);
3662 PL_formtarget = PL_bodytarget;
79cb57f6 3663 thr->errsv = newSVpvn("", 0);
78857c3c 3664 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3665
533c011a 3666 PL_maxscream = -1;
0b94c7bb
GS		 3667 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3668 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3669 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3670 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3671 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3672 PL_regindent = 0;
3673 PL_reginterp_cnt = 0;
5c0ca799 3674
199100c8
MB		 3675 return thr;
3676}
3677#endif /* USE_THREADS */
3678
93a17b20 3679void
864dbfa3 3680Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3681{
11343788 3682 dTHR;
971a9dd3 3683 SV *atsv;
57843af0 3684 line_t oldline = CopLINE(PL_curcop);
312caa8e 3685 CV *cv;
22921e25 3686 STRLEN len;
6224f72b 3687 int ret;
db36c5a1 3688 dJMPENV;
93a17b20 3689
76e3520e 3690 while (AvFILL(paramList) >= 0) {
312caa8e 3691 cv = (CV*)av_shift(paramList);
059a8bb7
JH		 3692 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3693 /* save PL_beginav for compiler */
3694 if (! PL_beginav_save)
3695 PL_beginav_save = newAV();
3696 av_push(PL_beginav_save, (SV*)cv);
3697 } else {
3698 SAVEFREESV(cv);
3699 }
14dd3ad8
GS		 3700#ifdef PERL_FLEXIBLE_EXCEPTIONS
3701 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3702#else
3703 JMPENV_PUSH(ret);
3704#endif
6224f72b 3705 switch (ret) {
312caa8e 3706 case 0:
14dd3ad8
GS		 3707#ifndef PERL_FLEXIBLE_EXCEPTIONS
3708 call_list_body(cv);
3709#endif
971a9dd3 3710 atsv = ERRSV;
312caa8e
CS		 3711 (void)SvPV(atsv, len);
3712 if (len) {
971a9dd3 3713 STRLEN n_a;
312caa8e 3714 PL_curcop = &PL_compiling;
57843af0 3715 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3716 if (paramList == PL_beginav)
3717 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3718 else
4f25aa18
GS		 3719 Perl_sv_catpvf(aTHX_ atsv,
3720 "%s failed--call queue aborted",
7d30b5c4 3721 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3722 : paramList == PL_initav ? "INIT"
3723 : "END");
312caa8e
CS		 3724 while (PL_scopestack_ix > oldscope)
3725 LEAVE;
14dd3ad8 3726 JMPENV_POP;
971a9dd3 3727 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3728 }
85e6fe83 3729 break;
6224f72b 3730 case 1:
f86702cc 3731 STATUS_ALL_FAILURE;
85e6fe83 3732 /* FALL THROUGH */
6224f72b 3733 case 2:
85e6fe83 3734 /* my_exit() was called */
3280af22 3735 while (PL_scopestack_ix > oldscope)
2ae324a7 3736 LEAVE;
84902520 3737 FREETMPS;
3280af22 3738 PL_curstash = PL_defstash;
3280af22 3739 PL_curcop = &PL_compiling;
57843af0 3740 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3741 JMPENV_POP;
cc3604b1 3742 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3743 if (paramList == PL_beginav)
cea2e8a9 3744 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3745 else
4f25aa18 3746 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3747 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3748 : paramList == PL_initav ? "INIT"
3749 : "END");
85e6fe83 3750 }
f86702cc 3751 my_exit_jump();
85e6fe83 3752 /* NOTREACHED */
6224f72b 3753 case 3:
312caa8e
CS		 3754 if (PL_restartop) {
3755 PL_curcop = &PL_compiling;
57843af0 3756 CopLINE_set(PL_curcop, oldline);
312caa8e 3757 JMPENV_JUMP(3);
85e6fe83 3758 }
bf49b057 3759 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3760 FREETMPS;
3761 break;
8990e307 3762 }
14dd3ad8 3763 JMPENV_POP;
93a17b20 3764 }
93a17b20 3765}
93a17b20 3766
14dd3ad8 3767#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3768STATIC void *
14dd3ad8 3769S_vcall_list_body(pTHX_ va_list args)
312caa8e 3770{
312caa8e 3771 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3772 return call_list_body(cv);
3773}
3774#endif
312caa8e 3775
14dd3ad8
GS		 3776STATIC void *
3777S_call_list_body(pTHX_ CV *cv)
3778{
312caa8e 3779 PUSHMARK(PL_stack_sp);
864dbfa3 3780 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3781 return NULL;
3782}
3783
f86702cc 3784void
864dbfa3 3785Perl_my_exit(pTHX_ U32 status)
f86702cc 3786{
5dc0d613
MB		 3787 dTHR;
3788
8b73bbec 3789 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3790 thr, (unsigned long) status));
f86702cc 3791 switch (status) {
3792 case 0:
3793 STATUS_ALL_SUCCESS;
3794 break;
3795 case 1:
3796 STATUS_ALL_FAILURE;
3797 break;
3798 default:
3799 STATUS_NATIVE_SET(status);
3800 break;
3801 }
3802 my_exit_jump();
3803}
3804
3805void
864dbfa3 3806Perl_my_failure_exit(pTHX)
f86702cc 3807{
3808#ifdef VMS
3809 if (vaxc$errno & 1) {
4fdae800 3810 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3811 STATUS_NATIVE_SET(44);
f86702cc 3812 }
3813 else {
ff0cee69 3814 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3815 STATUS_NATIVE_SET(44);
f86702cc 3816 else
4fdae800 3817 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3818 }
3819#else
9b599b2a 3820 int exitstatus;
f86702cc 3821 if (errno & 255)
3822 STATUS_POSIX_SET(errno);
9b599b2a
GS		 3823 else {
3824 exitstatus = STATUS_POSIX >> 8;
3825 if (exitstatus & 255)
3826 STATUS_POSIX_SET(exitstatus);
3827 else
3828 STATUS_POSIX_SET(255);
3829 }
f86702cc 3830#endif
3831 my_exit_jump();
93a17b20
LW		 3832}
3833
76e3520e 3834STATIC void
cea2e8a9 3835S_my_exit_jump(pTHX)
f86702cc 3836{
de616352 3837 dTHR;
c09156bb 3838 register PERL_CONTEXT *cx;
f86702cc 3839 I32 gimme;
3840 SV **newsp;
3841
3280af22
NIS		 3842 if (PL_e_script) {
3843 SvREFCNT_dec(PL_e_script);
3844 PL_e_script = Nullsv;
f86702cc 3845 }
3846
3280af22 3847 POPSTACK_TO(PL_mainstack);
f86702cc 3848 if (cxstack_ix >= 0) {
3849 if (cxstack_ix > 0)
3850 dounwind(0);
3280af22 3851 POPBLOCK(cx,PL_curpm);
f86702cc 3852 LEAVE;
3853 }
ff0cee69 3854
6224f72b 3855 JMPENV_JUMP(2);
f86702cc 3856}
873ef191 3857
7a5f8e82 3858#ifdef PERL_OBJECT
873ef191 3859#include "XSUB.h"
51371543 3860#endif
873ef191 3861
0cb96387
GS		 3862static I32
3863read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3864{
3865 char *p, *nl;
3280af22 3866 p = SvPVX(PL_e_script);
873ef191 3867 nl = strchr(p, '\n');
3280af22 3868 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3869 if (nl-p == 0) {
0cb96387 3870 filter_del(read_e_script);
873ef191 3871 return 0;
7dfe3f66 3872 }
873ef191 3873 sv_catpvn(buf_sv, p, nl-p);
3280af22 3874 sv_chop(PL_e_script, nl);
873ef191
GS		 3875 return 1;
3876}
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