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a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
0cb96387
GS		 28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS		 43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS		 50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS		 67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS		 73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS		 85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS		 87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS		 94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS		 99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS		 102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS		 104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS		 106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS		 112#endif
113
32e30700
GS		 114 return my_perl;
115}
116#else
954c1994
GS		 117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS		 140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1
MB		 151#ifdef USE_THREADS
152 int i;
153#ifndef FAKE_THREADS
e1f15930 154 struct perl_thread *thr = NULL;
a863c7d1
MB		 155#endif /* FAKE_THREADS */
156#endif /* USE_THREADS */
ba869deb 157
8990e307 158#ifdef MULTIPLICITY
54aff467 159 init_interp();
ac27b0f5 160 PL_perl_destruct_level = 1;
54aff467
GS		 161#else
162 if (PL_perl_destruct_level > 0)
163 init_interp();
164#endif
165
33f46ff6 166 /* Init the real globals (and main thread)? */
3280af22 167 if (!PL_linestr) {
1feb2720 168#ifdef USE_THREADS
533c011a 169 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 170 /*
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
173 */
533c011a
NIS		 174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
ba869deb 178# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 179 MUTEX_INIT(&PL_svref_mutex);
ba869deb 180# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 181
5ff3f7a4 182 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 185
199100c8 186 thr = init_main_thread();
11343788
MB		 187#endif /* USE_THREADS */
188
14dd3ad8 189#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 191#endif
312caa8e 192
2aea9f8a
GS		 193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194
3280af22
NIS		 195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 197
3280af22 198 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 199 /* set read-only and try to insure than we wont see REFCNT==0
200 very often */
201
3280af22
NIS		 202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 204
3280af22
NIS		 205 sv_setpv(&PL_sv_no,PL_No);
206 SvNV(&PL_sv_no);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 209
3280af22
NIS		 210 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvNV(&PL_sv_yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 214 }
79072805 215
76e3520e
GS		 216#ifdef PERL_OBJECT
217 /* TODO: */
6b88bc9c 218 /* PL_sighandlerp = sighandler; */
76e3520e 219#else
cea2e8a9 220 PL_sighandlerp = Perl_sighandler;
76e3520e 221#endif
3280af22 222 PL_pidstatus = newHV();
44a8e56a 223
79072805
LW		 224#ifdef MSDOS
225 /*
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
228 * filehandles.
229 */
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
232#endif
233 }
234
79cb57f6 235 PL_nrs = newSVpvn("\n", 1);
3280af22 236 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 237
cea2e8a9 238 init_stacks();
79072805 239
748a9306 240 init_ids();
3280af22 241 PL_lex_state = LEX_NOTPARSING;
a5f75d66 242
312caa8e 243 JMPENV_BOOTSTRAP;
f86702cc 244 STATUS_ALL_SUCCESS;
245
0672f40e 246 init_i18nl10n(1);
36477c24 247 SET_NUMERIC_STANDARD();
0b5b802d 248
a7cb1f99
GS		 249 {
250 U8 *s;
251 PL_patchlevel = NEWSV(0,4);
155aba94 252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99
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{
748a9306 301 int destruct_level; /* 0=none, 1=full, 2=full with checks */
8990e307 302 I32 last_sv_count;
a0d0e21e 303 HV *hv;
1f2bfc8a 304#ifdef USE_THREADS
33f46ff6 305 Thread t;
cea2e8a9 306 dTHX;
1f2bfc8a 307#endif /* USE_THREADS */
8990e307 308
7766f137
GS		 309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
311
11343788 312#ifdef USE_THREADS
0f15f207 313#ifndef FAKE_THREADS
8023c3ce
MB		 314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 retry_cleanup:
533c011a 316 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 317 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 318 "perl_destruct: waiting for %d threads...\n",
533c011a 319 PL_nthreads - 1));
33f46ff6 320 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
323 AV *av;
c7848ba1 324 case THRf_ZOMBIE:
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
533c011a 329 PL_nthreads--;
8023c3ce
MB		 330 /*
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
334 * all over again.
335 */
533c011a 336 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 337 JOIN(t, &av);
605e5515 338 SvREFCNT_dec((SV*)av);
bf49b057 339 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 340 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 341 goto retry_cleanup;
c7848ba1 342 case THRf_R_JOINABLE:
bf49b057 343 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 346 /*
c7848ba1
MB		 347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
351 */
533c011a 352 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 353 DETACH(t);
354 MUTEX_UNLOCK(&t->mutex);
8023c3ce 355 goto retry_cleanup;
c7848ba1 356 default:
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 358 "perl_destruct: ignoring %p (state %u)\n",
359 t, ThrSTATE(t)));
360 MUTEX_UNLOCK(&t->mutex);
c7848ba1 361 /* fall through and out */
33f46ff6
MB		 362 }
363 }
8023c3ce
MB		 364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 367 while (PL_nthreads > 1)
11343788 368 {
bf49b057 369 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 370 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 371 PL_nthreads - 1));
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 373 }
374 /* At this point, we're the last thread */
533c011a 375 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
b57a092c 379 PL_nthreads--;
0f15f207 380#endif /* !defined(FAKE_THREADS) */
11343788
MB		 381#endif /* USE_THREADS */
382
3280af22 383 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 384#ifdef DEBUGGING
385 {
386 char *s;
155aba94 387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 388 int i = atoi(s);
389 if (destruct_level < i)
390 destruct_level = i;
391 }
4633a7c4
LW		 392 }
393#endif
394
8990e307 395 LEAVE;
a0d0e21e
LW		 396 FREETMPS;
397
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 435 DEBUG_P(debprofdump());
ac27b0f5 436
a0d0e21e
LW		 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
7889fe52
NIS		 476 SvREFCNT_dec(PL_ofs_sv); /* $, */
477 PL_ofs_sv = Nullsv;
5f05dabc 478
7889fe52
NIS		 479 SvREFCNT_dec(PL_ors_sv); /* $\ */
480 PL_ors_sv = Nullsv;
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;
ac27b0f5
NIS		 605 if (!specialCopIO(PL_compiling.cop_io))
606 SvREFCNT_dec(PL_compiling.cop_io);
607 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 608#ifdef USE_ITHREADS
609 Safefree(CopFILE(&PL_compiling));
610 CopFILE(&PL_compiling) = Nullch;
611 Safefree(CopSTASHPV(&PL_compiling));
612#else
01724ea0 613 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 614 CopFILEGV(&PL_compiling) = Nullgv;
615 /* cop_stash is not refcounted */
01724ea0 616#endif
5c831c24 617
a0d0e21e 618 /* Prepare to destruct main symbol table. */
5f05dabc 619
3280af22
NIS		 620 hv = PL_defstash;
621 PL_defstash = 0;
a0d0e21e 622 SvREFCNT_dec(hv);
5c831c24
GS		 623 SvREFCNT_dec(PL_curstname);
624 PL_curstname = Nullsv;
a0d0e21e 625
5a844595
GS		 626 /* clear queued errors */
627 SvREFCNT_dec(PL_errors);
628 PL_errors = Nullsv;
629
a0d0e21e 630 FREETMPS;
0453d815 631 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 632 if (PL_scopestack_ix != 0)
0453d815
PM		 633 Perl_warner(aTHX_ WARN_INTERNAL,
634 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 635 (long)PL_scopestack_ix);
636 if (PL_savestack_ix != 0)
0453d815
PM		 637 Perl_warner(aTHX_ WARN_INTERNAL,
638 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 639 (long)PL_savestack_ix);
640 if (PL_tmps_floor != -1)
0453d815 641 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 642 (long)PL_tmps_floor + 1);
a0d0e21e 643 if (cxstack_ix != -1)
0453d815 644 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 645 (long)cxstack_ix + 1);
a0d0e21e 646 }
8990e307
LW		 647
648 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 649 last_sv_count = 0;
d33b2eba 650 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS		 651 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
652 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
653 last_sv_count = PL_sv_count;
8990e307
LW		 654 sv_clean_all();
655 }
d33b2eba
GS		 656 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
657 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 658 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
659 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 660
d4777f27
GS		 661 AvREAL_off(PL_fdpid); /* no surviving entries */
662 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 663 PL_fdpid = Nullav;
664
6c644e78
GS		 665#ifdef HAVE_INTERP_INTERN
666 sys_intern_clear();
667#endif
668
6e72f9df 669 /* Destruct the global string table. */
670 {
671 /* Yell and reset the HeVAL() slots that are still holding refcounts,
672 * so that sv_free() won't fail on them.
673 */
674 I32 riter;
675 I32 max;
676 HE *hent;
677 HE **array;
678
679 riter = 0;
3280af22
NIS		 680 max = HvMAX(PL_strtab);
681 array = HvARRAY(PL_strtab);
6e72f9df 682 hent = array[0];
683 for (;;) {
0453d815
PM		 684 if (hent && ckWARN_d(WARN_INTERNAL)) {
685 Perl_warner(aTHX_ WARN_INTERNAL,
686 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 687 HeVAL(hent) - Nullsv, HeKEY(hent));
688 HeVAL(hent) = Nullsv;
689 hent = HeNEXT(hent);
690 }
691 if (!hent) {
692 if (++riter > max)
693 break;
694 hent = array[riter];
695 }
696 }
697 }
3280af22 698 SvREFCNT_dec(PL_strtab);
6e72f9df 699
d33b2eba
GS		 700 /* free special SVs */
701
702 SvREFCNT(&PL_sv_yes) = 0;
703 sv_clear(&PL_sv_yes);
704 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 705 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 706
707 SvREFCNT(&PL_sv_no) = 0;
708 sv_clear(&PL_sv_no);
709 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 710 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 711
712 SvREFCNT(&PL_sv_undef) = 0;
713 SvREADONLY_off(&PL_sv_undef);
d33b2eba 714
0453d815
PM		 715 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
716 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 717
3280af22 718 Safefree(PL_origfilename);
3280af22 719 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 720 if (PL_reg_curpm)
721 Safefree(PL_reg_curpm);
82ba1be6 722 Safefree(PL_reg_poscache);
3280af22
NIS		 723 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
724 Safefree(PL_op_mask);
cf36064f
GS		 725 Safefree(PL_psig_ptr);
726 Safefree(PL_psig_name);
6e72f9df 727 nuke_stacks();
3280af22 728 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 729
a0d0e21e 730 DEBUG_P(debprofdump());
11343788 731#ifdef USE_THREADS
5f08fbcd 732 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 733 MUTEX_DESTROY(&PL_sv_mutex);
734 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 735 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 736 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 737 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 738#ifdef EMULATE_ATOMIC_REFCOUNTS
739 MUTEX_DESTROY(&PL_svref_mutex);
740#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 741
8023c3ce 742 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 743 Safefree(SvPVX(PL_thrsv));
744 Safefree(SvANY(PL_thrsv));
745 Safefree(PL_thrsv);
746 PL_thrsv = Nullsv;
8023c3ce 747#endif /* USE_THREADS */
d33b2eba 748
612f20c3
GS		 749 sv_free_arenas();
750
fc36a67e 751 /* As the absolutely last thing, free the non-arena SV for mess() */
752
3280af22 753 if (PL_mess_sv) {
9c63abab
GS		 754 /* it could have accumulated taint magic */
755 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
756 MAGIC* mg;
757 MAGIC* moremagic;
758 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
759 moremagic = mg->mg_moremagic;
760 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
761 Safefree(mg->mg_ptr);
762 Safefree(mg);
763 }
764 }
fc36a67e 765 /* we know that type >= SVt_PV */
155aba94 766 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 767 Safefree(SvPVX(PL_mess_sv));
768 Safefree(SvANY(PL_mess_sv));
769 Safefree(PL_mess_sv);
770 PL_mess_sv = Nullsv;
fc36a67e 771 }
79072805
LW		 772}
773
954c1994
GS		 774/*
775=for apidoc perl_free
776
777Releases a Perl interpreter. See L<perlembed>.
778
779=cut
780*/
781
79072805 782void
0cb96387 783perl_free(pTHXx)
79072805 784{
c5be433b 785#if defined(PERL_OBJECT)
7f0d82f7 786 PerlMem_free(this);
76e3520e 787#else
ce3e5b80
NIS		 788# if defined(WIN32)
789# if defined(PERL_IMPLICIT_SYS)
1c0ca838 790 void *host = w32_internal_host;
ba247512
NIS		 791 if (PerlProc_lasthost()) {
792 PerlIO_cleanup();
793 }
7f0d82f7 794 PerlMem_free(aTHXx);
1c0ca838 795 win32_delete_internal_host(host);
ce3e5b80 796#else
ba247512 797 PerlIO_cleanup();
ce3e5b80
NIS		 798 PerlMem_free(aTHXx);
799#endif
1c0ca838
GS		 800# else
801 PerlMem_free(aTHXx);
802# endif
76e3520e 803#endif
79072805
LW		 804}
805
4b556e6c 806void
864dbfa3 807Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 808{
3280af22
NIS		 809 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
810 PL_exitlist[PL_exitlistlen].fn = fn;
811 PL_exitlist[PL_exitlistlen].ptr = ptr;
812 ++PL_exitlistlen;
4b556e6c
JD		 813}
814
954c1994
GS		 815/*
816=for apidoc perl_parse
817
818Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
819
820=cut
821*/
822
79072805 823int
0cb96387 824perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 825{
6224f72b 826 I32 oldscope;
6224f72b 827 int ret;
db36c5a1 828 dJMPENV;
cea2e8a9
GS		 829#ifdef USE_THREADS
830 dTHX;
831#endif
8d063cd8 832
a687059c
LW		 833#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
834#ifdef IAMSUID
835#undef IAMSUID
cea2e8a9 836 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 837setuid perl scripts securely.\n");
838#endif
839#endif
840
8f1f23e8 841#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 842 _dyld_lookup_and_bind
843 ("__environ", (unsigned long *) &environ_pointer, NULL);
844#endif /* environ */
845
3280af22
NIS		 846 PL_origargv = argv;
847 PL_origargc = argc;
fa6a1c44 848#ifdef USE_ENVIRON_ARRAY
3280af22 849 PL_origenviron = environ;
a0d0e21e
LW		 850#endif
851
3280af22 852 if (PL_do_undump) {
a0d0e21e
LW		 853
854 /* Come here if running an undumped a.out. */
855
3280af22
NIS		 856 PL_origfilename = savepv(argv[0]);
857 PL_do_undump = FALSE;
a0d0e21e 858 cxstack_ix = -1; /* start label stack again */
748a9306 859 init_ids();
a0d0e21e
LW		 860 init_postdump_symbols(argc,argv,env);
861 return 0;
862 }
863
3280af22
NIS		 864 if (PL_main_root) {
865 PL_curpad = AvARRAY(PL_comppad);
866 op_free(PL_main_root);
867 PL_main_root = Nullop;
ff0cee69 868 }
3280af22
NIS		 869 PL_main_start = Nullop;
870 SvREFCNT_dec(PL_main_cv);
871 PL_main_cv = Nullcv;
79072805 872
3280af22
NIS		 873 time(&PL_basetime);
874 oldscope = PL_scopestack_ix;
599cee73 875 PL_dowarn = G_WARN_OFF;
f86702cc 876
14dd3ad8
GS		 877#ifdef PERL_FLEXIBLE_EXCEPTIONS
878 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
879#else
880 JMPENV_PUSH(ret);
881#endif
6224f72b 882 switch (ret) {
312caa8e 883 case 0:
14dd3ad8
GS		 884#ifndef PERL_FLEXIBLE_EXCEPTIONS
885 parse_body(env,xsinit);
886#endif
7d30b5c4
GS		 887 if (PL_checkav)
888 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 889 ret = 0;
890 break;
6224f72b
GS		 891 case 1:
892 STATUS_ALL_FAILURE;
893 /* FALL THROUGH */
894 case 2:
895 /* my_exit() was called */
3280af22 896 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 897 LEAVE;
898 FREETMPS;
3280af22 899 PL_curstash = PL_defstash;
7d30b5c4
GS		 900 if (PL_checkav)
901 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 902 ret = STATUS_NATIVE_EXPORT;
903 break;
6224f72b 904 case 3:
bf49b057 905 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 906 ret = 1;
907 break;
6224f72b 908 }
14dd3ad8
GS		 909 JMPENV_POP;
910 return ret;
911}
912
913#ifdef PERL_FLEXIBLE_EXCEPTIONS
914STATIC void *
915S_vparse_body(pTHX_ va_list args)
916{
917 char **env = va_arg(args, char**);
918 XSINIT_t xsinit = va_arg(args, XSINIT_t);
919
920 return parse_body(env, xsinit);
312caa8e 921}
14dd3ad8 922#endif
312caa8e
CS		 923
924STATIC void *
14dd3ad8 925S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 926{
312caa8e
CS		 927 int argc = PL_origargc;
928 char **argv = PL_origargv;
312caa8e
CS		 929 char *scriptname = NULL;
930 int fdscript = -1;
931 VOL bool dosearch = FALSE;
932 char *validarg = "";
933 AV* comppadlist;
934 register SV *sv;
935 register char *s;
f4c556ac 936 char *cddir = Nullch;
312caa8e 937
3280af22 938 sv_setpvn(PL_linestr,"",0);
79cb57f6 939 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 940 SAVEFREESV(sv);
941 init_main_stash();
54310121 942
6224f72b
GS		 943 for (argc--,argv++; argc > 0; argc--,argv++) {
944 if (argv[0][0] != '-' || !argv[0][1])
945 break;
946#ifdef DOSUID
947 if (*validarg)
948 validarg = " PHOOEY ";
949 else
950 validarg = argv[0];
13281fa4 951#endif
6224f72b
GS		 952 s = argv[0]+1;
953 reswitch:
954 switch (*s) {
729a02f2
GS		 955 case 'C':
956#ifdef WIN32
c0932edc 957 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 958 /* FALL THROUGH */
959#endif
1d5472a9
GS		 960#ifndef PERL_STRICT_CR
961 case '\r':
962#endif
6224f72b
GS		 963 case ' ':
964 case '0':
965 case 'F':
966 case 'a':
967 case 'c':
968 case 'd':
969 case 'D':
970 case 'h':
971 case 'i':
972 case 'l':
973 case 'M':
974 case 'm':
975 case 'n':
976 case 'p':
977 case 's':
978 case 'u':
979 case 'U':
980 case 'v':
599cee73
PM		 981 case 'W':
982 case 'X':
6224f72b 983 case 'w':
155aba94 984 if ((s = moreswitches(s)))
6224f72b
GS		 985 goto reswitch;
986 break;
33b78306 987
6224f72b 988 case 'T':
3280af22 989 PL_tainting = TRUE;
6224f72b
GS		 990 s++;
991 goto reswitch;
f86702cc 992
6224f72b 993 case 'e':
bf4acbe4
GS		 994#ifdef MACOS_TRADITIONAL
995 /* ignore -e for Dev:Pseudo argument */
996 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 997 break;
bf4acbe4 998#endif
3280af22 999 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1000 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1001 if (!PL_e_script) {
79cb57f6 1002 PL_e_script = newSVpvn("",0);
0cb96387 1003 filter_add(read_e_script, NULL);
6224f72b
GS		 1004 }
1005 if (*++s)
3280af22 1006 sv_catpv(PL_e_script, s);
6224f72b 1007 else if (argv[1]) {
3280af22 1008 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1009 argc--,argv++;
1010 }
1011 else
cea2e8a9 1012 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1013 sv_catpv(PL_e_script, "\n");
6224f72b 1014 break;
afe37c7d 1015
6224f72b
GS		 1016 case 'I': /* -I handled both here and in moreswitches() */
1017 forbid_setid("-I");
1018 if (!*++s && (s=argv[1]) != Nullch) {
1019 argc--,argv++;
1020 }
6224f72b 1021 if (s && *s) {
0df16ed7
GS		 1022 char *p;
1023 STRLEN len = strlen(s);
1024 p = savepvn(s, len);
9c8a64f0 1025 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1026 sv_catpvn(sv, "-I", 2);
1027 sv_catpvn(sv, p, len);
1028 sv_catpvn(sv, " ", 1);
6224f72b 1029 Safefree(p);
0df16ed7
GS		 1030 }
1031 else
a67e862a 1032 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1033 break;
1034 case 'P':
1035 forbid_setid("-P");
3280af22 1036 PL_preprocess = TRUE;
6224f72b
GS		 1037 s++;
1038 goto reswitch;
1039 case 'S':
1040 forbid_setid("-S");
1041 dosearch = TRUE;
1042 s++;
1043 goto reswitch;
1044 case 'V':
3280af22
NIS		 1045 if (!PL_preambleav)
1046 PL_preambleav = newAV();
1047 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1048 if (*++s != ':') {
3280af22 1049 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1050#ifdef VMS
6b88bc9c 1051 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1052#else
3280af22 1053 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1054#endif
3280af22 1055 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1056# ifdef DEBUGGING
3280af22 1057 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1058# endif
6224f72b 1059# ifdef MULTIPLICITY
8f872242 1060 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1061# endif
b363f7ed
GS		 1062# ifdef USE_THREADS
1063 sv_catpv(PL_Sv," USE_THREADS");
1064# endif
ac5e8965
JH		 1065# ifdef USE_ITHREADS
1066 sv_catpv(PL_Sv," USE_ITHREADS");
1067# endif
10cc9d2a
JH		 1068# ifdef USE_64_BIT_INT
1069 sv_catpv(PL_Sv," USE_64_BIT_INT");
1070# endif
1071# ifdef USE_64_BIT_ALL
1072 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1073# endif
1074# ifdef USE_LONG_DOUBLE
1075 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1076# endif
53430762
JH		 1077# ifdef USE_LARGE_FILES
1078 sv_catpv(PL_Sv," USE_LARGE_FILES");
1079# endif
ac5e8965
JH		 1080# ifdef USE_SOCKS
1081 sv_catpv(PL_Sv," USE_SOCKS");
1082# endif
b363f7ed
GS		 1083# ifdef PERL_OBJECT
1084 sv_catpv(PL_Sv," PERL_OBJECT");
1085# endif
1086# ifdef PERL_IMPLICIT_CONTEXT
1087 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1088# endif
1089# ifdef PERL_IMPLICIT_SYS
1090 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1091# endif
3280af22 1092 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1093
6224f72b
GS		 1094#if defined(LOCAL_PATCH_COUNT)
1095 if (LOCAL_PATCH_COUNT > 0) {
1096 int i;
3280af22 1097 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1098 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1099 if (PL_localpatches[i])
cea2e8a9 1100 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1101 }
1102 }
1103#endif
cea2e8a9 1104 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1105#ifdef __DATE__
1106# ifdef __TIME__
cea2e8a9 1107 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1108# else
cea2e8a9 1109 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1110# endif
1111#endif
3280af22 1112 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1113$\"=\"\\n \"; \
1114@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1115print \" \\%ENV:\\n @env\\n\" if @env; \
1116print \" \\@INC:\\n @INC\\n\";");
1117 }
1118 else {
3280af22
NIS		 1119 PL_Sv = newSVpv("config_vars(qw(",0);
1120 sv_catpv(PL_Sv, ++s);
1121 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1122 s += strlen(s);
1123 }
3280af22 1124 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1125 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1126 goto reswitch;
1127 case 'x':
3280af22 1128 PL_doextract = TRUE;
6224f72b
GS		 1129 s++;
1130 if (*s)
f4c556ac 1131 cddir = s;
6224f72b
GS		 1132 break;
1133 case 0:
1134 break;
1135 case '-':
1136 if (!*++s || isSPACE(*s)) {
1137 argc--,argv++;
1138 goto switch_end;
1139 }
1140 /* catch use of gnu style long options */
1141 if (strEQ(s, "version")) {
1142 s = "v";
1143 goto reswitch;
1144 }
1145 if (strEQ(s, "help")) {
1146 s = "h";
1147 goto reswitch;
1148 }
1149 s--;
1150 /* FALL THROUGH */
1151 default:
cea2e8a9 1152 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1153 }
1154 }
6224f72b 1155 switch_end:
54310121 1156
f675dbe5
CB		 1157 if (
1158#ifndef SECURE_INTERNAL_GETENV
1159 !PL_tainting &&
1160#endif
0df16ed7
GS		 1161 (s = PerlEnv_getenv("PERL5OPT")))
1162 {
74288ac8
GS		 1163 while (isSPACE(*s))
1164 s++;
1165 if (*s == '-' && *(s+1) == 'T')
1166 PL_tainting = TRUE;
1167 else {
1168 while (s && *s) {
1169 while (isSPACE(*s))
1170 s++;
1171 if (*s == '-') {
1172 s++;
1173 if (isSPACE(*s))
1174 continue;
1175 }
1176 if (!*s)
1177 break;
1178 if (!strchr("DIMUdmw", *s))
cea2e8a9 1179 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 1180 s = moreswitches(s);
6224f72b 1181 }
6224f72b
GS		 1182 }
1183 }
a0d0e21e 1184
6224f72b
GS		 1185 if (!scriptname)
1186 scriptname = argv[0];
3280af22 1187 if (PL_e_script) {
6224f72b
GS		 1188 argc++,argv--;
1189 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1190 }
1191 else if (scriptname == Nullch) {
1192#ifdef MSDOS
1193 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1194 moreswitches("h");
1195#endif
1196 scriptname = "-";
1197 }
1198
1199 init_perllib();
1200
1201 open_script(scriptname,dosearch,sv,&fdscript);
1202
1203 validate_suid(validarg, scriptname,fdscript);
1204
64ca3a65 1205#ifndef PERL_MICRO
0b5b802d
GS		 1206#if defined(SIGCHLD) || defined(SIGCLD)
1207 {
1208#ifndef SIGCHLD
1209# define SIGCHLD SIGCLD
1210#endif
1211 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1212 if (sigstate == SIG_IGN) {
1213 if (ckWARN(WARN_SIGNAL))
1214 Perl_warner(aTHX_ WARN_SIGNAL,
1215 "Can't ignore signal CHLD, forcing to default");
1216 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1217 }
1218 }
1219#endif
64ca3a65 1220#endif
0b5b802d 1221
bf4acbe4
GS		 1222#ifdef MACOS_TRADITIONAL
1223 if (PL_doextract || gMacPerl_AlwaysExtract) {
1224#else
f4c556ac 1225 if (PL_doextract) {
bf4acbe4 1226#endif
6224f72b 1227 find_beginning();
f4c556ac
GS		 1228 if (cddir && PerlDir_chdir(cddir) < 0)
1229 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1230
1231 }
6224f72b 1232
3280af22
NIS		 1233 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1234 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1235 CvUNIQUE_on(PL_compcv);
1236
1237 PL_comppad = newAV();
1238 av_push(PL_comppad, Nullsv);
1239 PL_curpad = AvARRAY(PL_comppad);
1240 PL_comppad_name = newAV();
1241 PL_comppad_name_fill = 0;
1242 PL_min_intro_pending = 0;
1243 PL_padix = 0;
6224f72b 1244#ifdef USE_THREADS
79cb57f6 1245 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1246 PL_curpad[0] = (SV*)newAV();
1247 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1248 CvOWNER(PL_compcv) = 0;
1249 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1250 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1251#endif /* USE_THREADS */
1252
1253 comppadlist = newAV();
1254 AvREAL_off(comppadlist);
3280af22
NIS		 1255 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1256 av_store(comppadlist, 1, (SV*)PL_comppad);
1257 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1258
1259 boot_core_UNIVERSAL();
9a34ef1d 1260#ifndef PERL_MICRO
09bef843 1261 boot_core_xsutils();
9a34ef1d 1262#endif
6224f72b
GS		 1263
1264 if (xsinit)
0cb96387 1265 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1266#ifndef PERL_MICRO
ed79a026 1267#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1268 init_os_extras();
6224f72b 1269#endif
64ca3a65 1270#endif
6224f72b 1271
29209bc5 1272#ifdef USE_SOCKS
1b9c9cf5
DH		 1273# ifdef HAS_SOCKS5_INIT
1274 socks5_init(argv[0]);
1275# else
29209bc5 1276 SOCKSinit(argv[0]);
1b9c9cf5 1277# endif
ac27b0f5 1278#endif
29209bc5 1279
6224f72b
GS		 1280 init_predump_symbols();
1281 /* init_postdump_symbols not currently designed to be called */
1282 /* more than once (ENV isn't cleared first, for example) */
1283 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1284 if (!PL_do_undump)
6224f72b
GS		 1285 init_postdump_symbols(argc,argv,env);
1286
1287 init_lexer();
1288
1289 /* now parse the script */
1290
1291 SETERRNO(0,SS$_NORMAL);
3280af22 1292 PL_error_count = 0;
bf4acbe4
GS		 1293#ifdef MACOS_TRADITIONAL
1294 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1295 if (PL_minus_c)
1296 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1297 else {
1298 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1299 MacPerl_MPWFileName(PL_origfilename));
1300 }
1301 }
1302#else
3280af22
NIS		 1303 if (yyparse() || PL_error_count) {
1304 if (PL_minus_c)
cea2e8a9 1305 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1306 else {
cea2e8a9 1307 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1308 PL_origfilename);
6224f72b
GS		 1309 }
1310 }
bf4acbe4 1311#endif
57843af0 1312 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1313 PL_curstash = PL_defstash;
1314 PL_preprocess = FALSE;
1315 if (PL_e_script) {
1316 SvREFCNT_dec(PL_e_script);
1317 PL_e_script = Nullsv;
6224f72b
GS		 1318 }
1319
1320 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1321 SvREFCNT_dec(PL_rs);
1322 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1323 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1324 if (PL_do_undump)
6224f72b
GS		 1325 my_unexec();
1326
57843af0
GS		 1327 if (isWARN_ONCE) {
1328 SAVECOPFILE(PL_curcop);
1329 SAVECOPLINE(PL_curcop);
3280af22 1330 gv_check(PL_defstash);
57843af0 1331 }
6224f72b
GS		 1332
1333 LEAVE;
1334 FREETMPS;
1335
1336#ifdef MYMALLOC
1337 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1338 dump_mstats("after compilation:");
1339#endif
1340
1341 ENTER;
3280af22 1342 PL_restartop = 0;
312caa8e 1343 return NULL;
6224f72b
GS		 1344}
1345
954c1994
GS		 1346/*
1347=for apidoc perl_run
1348
1349Tells a Perl interpreter to run. See L<perlembed>.
1350
1351=cut
1352*/
1353
6224f72b 1354int
0cb96387 1355perl_run(pTHXx)
6224f72b 1356{
6224f72b 1357 I32 oldscope;
14dd3ad8 1358 int ret = 0;
db36c5a1 1359 dJMPENV;
cea2e8a9
GS		 1360#ifdef USE_THREADS
1361 dTHX;
1362#endif
6224f72b 1363
3280af22 1364 oldscope = PL_scopestack_ix;
6224f72b 1365
14dd3ad8 1366#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1367 redo_body:
14dd3ad8
GS		 1368 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1369#else
1370 JMPENV_PUSH(ret);
1371#endif
6224f72b
GS		 1372 switch (ret) {
1373 case 1:
1374 cxstack_ix = -1; /* start context stack again */
312caa8e 1375 goto redo_body;
14dd3ad8
GS		 1376 case 0: /* normal completion */
1377#ifndef PERL_FLEXIBLE_EXCEPTIONS
1378 redo_body:
1379 run_body(oldscope);
1380#endif
1381 /* FALL THROUGH */
1382 case 2: /* my_exit() */
3280af22 1383 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1384 LEAVE;
1385 FREETMPS;
3280af22 1386 PL_curstash = PL_defstash;
865be832 1387 if (PL_endav && !PL_minus_c)
3280af22 1388 call_list(oldscope, PL_endav);
6224f72b
GS		 1389#ifdef MYMALLOC
1390 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1391 dump_mstats("after execution: ");
1392#endif
14dd3ad8
GS		 1393 ret = STATUS_NATIVE_EXPORT;
1394 break;
6224f72b 1395 case 3:
312caa8e
CS		 1396 if (PL_restartop) {
1397 POPSTACK_TO(PL_mainstack);
1398 goto redo_body;
6224f72b 1399 }
bf49b057 1400 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1401 FREETMPS;
14dd3ad8
GS		 1402 ret = 1;
1403 break;
6224f72b
GS		 1404 }
1405
14dd3ad8
GS		 1406 JMPENV_POP;
1407 return ret;
312caa8e
CS		 1408}
1409
14dd3ad8 1410#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1411STATIC void *
14dd3ad8 1412S_vrun_body(pTHX_ va_list args)
312caa8e 1413{
312caa8e
CS		 1414 I32 oldscope = va_arg(args, I32);
1415
14dd3ad8
GS		 1416 return run_body(oldscope);
1417}
1418#endif
1419
1420
1421STATIC void *
1422S_run_body(pTHX_ I32 oldscope)
1423{
6224f72b 1424 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1425 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1426
3280af22 1427 if (!PL_restartop) {
6224f72b
GS		 1428 DEBUG_x(dump_all());
1429 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1430 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1431 PTR2UV(thr)));
6224f72b 1432
3280af22 1433 if (PL_minus_c) {
bf4acbe4
GS		 1434#ifdef MACOS_TRADITIONAL
1435 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1436#else
bf49b057 1437 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1438#endif
6224f72b
GS		 1439 my_exit(0);
1440 }
3280af22 1441 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1442 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1443 if (PL_initav)
1444 call_list(oldscope, PL_initav);
6224f72b
GS		 1445 }
1446
1447 /* do it */
1448
3280af22 1449 if (PL_restartop) {
533c011a 1450 PL_op = PL_restartop;
3280af22 1451 PL_restartop = 0;
cea2e8a9 1452 CALLRUNOPS(aTHX);
6224f72b 1453 }
3280af22
NIS		 1454 else if (PL_main_start) {
1455 CvDEPTH(PL_main_cv) = 1;
533c011a 1456 PL_op = PL_main_start;
cea2e8a9 1457 CALLRUNOPS(aTHX);
6224f72b
GS		 1458 }
1459
f6b3007c
JH		 1460 my_exit(0);
1461 /* NOTREACHED */
312caa8e 1462 return NULL;
6224f72b
GS		 1463}
1464
954c1994
GS		 1465/*
1466=for apidoc p||get_sv
1467
1468Returns the SV of the specified Perl scalar. If C<create> is set and the
1469Perl variable does not exist then it will be created. If C<create> is not
1470set and the variable does not exist then NULL is returned.
1471
1472=cut
1473*/
1474
6224f72b 1475SV*
864dbfa3 1476Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1477{
1478 GV *gv;
1479#ifdef USE_THREADS
1480 if (name[1] == '\0' && !isALPHA(name[0])) {
1481 PADOFFSET tmp = find_threadsv(name);
411caa50 1482 if (tmp != NOT_IN_PAD)
6224f72b 1483 return THREADSV(tmp);
6224f72b
GS		 1484 }
1485#endif /* USE_THREADS */
1486 gv = gv_fetchpv(name, create, SVt_PV);
1487 if (gv)
1488 return GvSV(gv);
1489 return Nullsv;
1490}
1491
954c1994
GS		 1492/*
1493=for apidoc p||get_av
1494
1495Returns the AV of the specified Perl array. If C<create> is set and the
1496Perl variable does not exist then it will be created. If C<create> is not
1497set and the variable does not exist then NULL is returned.
1498
1499=cut
1500*/
1501
6224f72b 1502AV*
864dbfa3 1503Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1504{
1505 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1506 if (create)
1507 return GvAVn(gv);
1508 if (gv)
1509 return GvAV(gv);
1510 return Nullav;
1511}
1512
954c1994
GS		 1513/*
1514=for apidoc p||get_hv
1515
1516Returns the HV of the specified Perl hash. If C<create> is set and the
1517Perl variable does not exist then it will be created. If C<create> is not
1518set and the variable does not exist then NULL is returned.
1519
1520=cut
1521*/
1522
6224f72b 1523HV*
864dbfa3 1524Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1525{
a0d0e21e
LW		 1526 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1527 if (create)
1528 return GvHVn(gv);
1529 if (gv)
1530 return GvHV(gv);
1531 return Nullhv;
1532}
1533
954c1994
GS		 1534/*
1535=for apidoc p||get_cv
1536
1537Returns the CV of the specified Perl subroutine. If C<create> is set and
1538the Perl subroutine does not exist then it will be declared (which has the
1539same effect as saying C<sub name;>). If C<create> is not set and the
1540subroutine does not exist then NULL is returned.
1541
1542=cut
1543*/
1544
a0d0e21e 1545CV*
864dbfa3 1546Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1547{
1548 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1549 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1550 /* XXX this is probably not what they think they're getting.
1551 * It has the same effect as "sub name;", i.e. just a forward
1552 * declaration! */
8ebc5c01 1553 if (create && !GvCVu(gv))
774d564b 1554 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1555 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1556 Nullop,
a0d0e21e
LW		 1557 Nullop);
1558 if (gv)
8ebc5c01 1559 return GvCVu(gv);
a0d0e21e
LW		 1560 return Nullcv;
1561}
1562
79072805
LW		 1563/* Be sure to refetch the stack pointer after calling these routines. */
1564
954c1994
GS		 1565/*
1566=for apidoc p||call_argv
1567
1568Performs a callback to the specified Perl sub. See L<perlcall>.
1569
1570=cut
1571*/
1572
a0d0e21e 1573I32
864dbfa3 1574Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1575
8ac85365
NIS		 1576 /* See G_* flags in cop.h */
1577 /* null terminated arg list */
8990e307 1578{
a0d0e21e 1579 dSP;
8990e307 1580
924508f0 1581 PUSHMARK(SP);
a0d0e21e 1582 if (argv) {
8990e307 1583 while (*argv) {
a0d0e21e 1584 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1585 argv++;
1586 }
a0d0e21e 1587 PUTBACK;
8990e307 1588 }
864dbfa3 1589 return call_pv(sub_name, flags);
8990e307
LW		 1590}
1591
954c1994
GS		 1592/*
1593=for apidoc p||call_pv
1594
1595Performs a callback to the specified Perl sub. See L<perlcall>.
1596
1597=cut
1598*/
1599
a0d0e21e 1600I32
864dbfa3 1601Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1602 /* name of the subroutine */
1603 /* See G_* flags in cop.h */
a0d0e21e 1604{
864dbfa3 1605 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1606}
1607
954c1994
GS		 1608/*
1609=for apidoc p||call_method
1610
1611Performs a callback to the specified Perl method. The blessed object must
1612be on the stack. See L<perlcall>.
1613
1614=cut
1615*/
1616
a0d0e21e 1617I32
864dbfa3 1618Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1619 /* name of the subroutine */
1620 /* See G_* flags in cop.h */
a0d0e21e 1621{
968b3946 1622 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1623}
1624
1625/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1626/*
1627=for apidoc p||call_sv
1628
1629Performs a callback to the Perl sub whose name is in the SV. See
1630L<perlcall>.
1631
1632=cut
1633*/
1634
a0d0e21e 1635I32
864dbfa3 1636Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1637 /* See G_* flags in cop.h */
a0d0e21e 1638{
924508f0 1639 dSP;
a0d0e21e 1640 LOGOP myop; /* fake syntax tree node */
968b3946 1641 UNOP method_op;
aa689395 1642 I32 oldmark;
a0d0e21e 1643 I32 retval;
a0d0e21e 1644 I32 oldscope;
54310121 1645 bool oldcatch = CATCH_GET;
6224f72b 1646 int ret;
533c011a 1647 OP* oldop = PL_op;
db36c5a1 1648 dJMPENV;
1e422769 1649
a0d0e21e
LW		 1650 if (flags & G_DISCARD) {
1651 ENTER;
1652 SAVETMPS;
1653 }
1654
aa689395 1655 Zero(&myop, 1, LOGOP);
54310121 1656 myop.op_next = Nullop;
f51d4af5 1657 if (!(flags & G_NOARGS))
aa689395 1658 myop.op_flags |= OPf_STACKED;
54310121 1659 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1660 (flags & G_ARRAY) ? OPf_WANT_LIST :
1661 OPf_WANT_SCALAR);
462e5cf6 1662 SAVEOP();
533c011a 1663 PL_op = (OP*)&myop;
aa689395 1664
3280af22
NIS		 1665 EXTEND(PL_stack_sp, 1);
1666 *++PL_stack_sp = sv;
aa689395 1667 oldmark = TOPMARK;
3280af22 1668 oldscope = PL_scopestack_ix;
a0d0e21e 1669
3280af22 1670 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1671 /* Handle first BEGIN of -d. */
3280af22 1672 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1673 /* Try harder, since this may have been a sighandler, thus
1674 * curstash may be meaningless. */
3280af22 1675 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1676 && !(flags & G_NODEBUG))
533c011a 1677 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1678
968b3946
GS		 1679 if (flags & G_METHOD) {
1680 Zero(&method_op, 1, UNOP);
1681 method_op.op_next = PL_op;
1682 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1683 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1684 PL_op = (OP*)&method_op;
968b3946
GS		 1685 }
1686
312caa8e 1687 if (!(flags & G_EVAL)) {
0cdb2077 1688 CATCH_SET(TRUE);
14dd3ad8 1689 call_body((OP*)&myop, FALSE);
312caa8e 1690 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1691 CATCH_SET(oldcatch);
312caa8e
CS		 1692 }
1693 else {
d78bda3d 1694 myop.op_other = (OP*)&myop;
3280af22 1695 PL_markstack_ptr--;
4633a7c4
LW		 1696 /* we're trying to emulate pp_entertry() here */
1697 {
c09156bb 1698 register PERL_CONTEXT *cx;
54310121 1699 I32 gimme = GIMME_V;
ac27b0f5 1700
4633a7c4
LW		 1701 ENTER;
1702 SAVETMPS;
ac27b0f5 1703
968b3946 1704 push_return(Nullop);
1d76a5c3 1705 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1706 PUSHEVAL(cx, 0, 0);
533c011a 1707 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1708
faef0170 1709 PL_in_eval = EVAL_INEVAL;
4633a7c4 1710 if (flags & G_KEEPERR)
faef0170 1711 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1712 else
38a03e6e 1713 sv_setpv(ERRSV,"");
4633a7c4 1714 }
3280af22 1715 PL_markstack_ptr++;
a0d0e21e 1716
14dd3ad8
GS		 1717#ifdef PERL_FLEXIBLE_EXCEPTIONS
1718 redo_body:
1719 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1720 (OP*)&myop, FALSE);
14dd3ad8
GS		 1721#else
1722 JMPENV_PUSH(ret);
1723#endif
6224f72b
GS		 1724 switch (ret) {
1725 case 0:
14dd3ad8
GS		 1726#ifndef PERL_FLEXIBLE_EXCEPTIONS
1727 redo_body:
1728 call_body((OP*)&myop, FALSE);
1729#endif
312caa8e
CS		 1730 retval = PL_stack_sp - (PL_stack_base + oldmark);
1731 if (!(flags & G_KEEPERR))
1732 sv_setpv(ERRSV,"");
a0d0e21e 1733 break;
6224f72b 1734 case 1:
f86702cc 1735 STATUS_ALL_FAILURE;
a0d0e21e 1736 /* FALL THROUGH */
6224f72b 1737 case 2:
a0d0e21e 1738 /* my_exit() was called */
3280af22 1739 PL_curstash = PL_defstash;
a0d0e21e 1740 FREETMPS;
14dd3ad8 1741 JMPENV_POP;
cc3604b1 1742 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1743 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1744 my_exit_jump();
a0d0e21e 1745 /* NOTREACHED */
6224f72b 1746 case 3:
3280af22 1747 if (PL_restartop) {
533c011a 1748 PL_op = PL_restartop;
3280af22 1749 PL_restartop = 0;
312caa8e 1750 goto redo_body;
a0d0e21e 1751 }
3280af22 1752 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1753 if (flags & G_ARRAY)
1754 retval = 0;
1755 else {
1756 retval = 1;
3280af22 1757 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1758 }
312caa8e 1759 break;
a0d0e21e 1760 }
a0d0e21e 1761
3280af22 1762 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1763 SV **newsp;
1764 PMOP *newpm;
1765 I32 gimme;
c09156bb 1766 register PERL_CONTEXT *cx;
a0a2876f
LW		 1767 I32 optype;
1768
1769 POPBLOCK(cx,newpm);
1770 POPEVAL(cx);
1771 pop_return();
3280af22 1772 PL_curpm = newpm;
a0a2876f 1773 LEAVE;
a0d0e21e 1774 }
14dd3ad8 1775 JMPENV_POP;
a0d0e21e 1776 }
1e422769 1777
a0d0e21e 1778 if (flags & G_DISCARD) {
3280af22 1779 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1780 retval = 0;
1781 FREETMPS;
1782 LEAVE;
1783 }
533c011a 1784 PL_op = oldop;
a0d0e21e
LW		 1785 return retval;
1786}
1787
14dd3ad8 1788#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1789STATIC void *
14dd3ad8 1790S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1791{
1792 OP *myop = va_arg(args, OP*);
1793 int is_eval = va_arg(args, int);
1794
14dd3ad8 1795 call_body(myop, is_eval);
312caa8e
CS		 1796 return NULL;
1797}
14dd3ad8 1798#endif
312caa8e
CS		 1799
1800STATIC void
14dd3ad8 1801S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1802{
312caa8e
CS		 1803 if (PL_op == myop) {
1804 if (is_eval)
f807eda9 1805 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1806 else
f807eda9 1807 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1808 }
1809 if (PL_op)
cea2e8a9 1810 CALLRUNOPS(aTHX);
312caa8e
CS		 1811}
1812
6e72f9df 1813/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1814
954c1994
GS		 1815/*
1816=for apidoc p||eval_sv
1817
1818Tells Perl to C<eval> the string in the SV.
1819
1820=cut
1821*/
1822
a0d0e21e 1823I32
864dbfa3 1824Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1825
8ac85365 1826 /* See G_* flags in cop.h */
a0d0e21e 1827{
924508f0 1828 dSP;
a0d0e21e 1829 UNOP myop; /* fake syntax tree node */
3280af22 1830 I32 oldmark = SP - PL_stack_base;
4633a7c4 1831 I32 retval;
4633a7c4 1832 I32 oldscope;
6224f72b 1833 int ret;
533c011a 1834 OP* oldop = PL_op;
db36c5a1 1835 dJMPENV;
84902520 1836
4633a7c4
LW		 1837 if (flags & G_DISCARD) {
1838 ENTER;
1839 SAVETMPS;
1840 }
1841
462e5cf6 1842 SAVEOP();
533c011a
NIS		 1843 PL_op = (OP*)&myop;
1844 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1845 EXTEND(PL_stack_sp, 1);
1846 *++PL_stack_sp = sv;
1847 oldscope = PL_scopestack_ix;
79072805 1848
4633a7c4
LW		 1849 if (!(flags & G_NOARGS))
1850 myop.op_flags = OPf_STACKED;
79072805 1851 myop.op_next = Nullop;
6e72f9df 1852 myop.op_type = OP_ENTEREVAL;
54310121 1853 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1854 (flags & G_ARRAY) ? OPf_WANT_LIST :
1855 OPf_WANT_SCALAR);
6e72f9df 1856 if (flags & G_KEEPERR)
1857 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1858
14dd3ad8 1859#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1860 redo_body:
14dd3ad8 1861 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1862 (OP*)&myop, TRUE);
14dd3ad8
GS		 1863#else
1864 JMPENV_PUSH(ret);
1865#endif
6224f72b
GS		 1866 switch (ret) {
1867 case 0:
14dd3ad8
GS		 1868#ifndef PERL_FLEXIBLE_EXCEPTIONS
1869 redo_body:
1870 call_body((OP*)&myop,TRUE);
1871#endif
312caa8e
CS		 1872 retval = PL_stack_sp - (PL_stack_base + oldmark);
1873 if (!(flags & G_KEEPERR))
1874 sv_setpv(ERRSV,"");
4633a7c4 1875 break;
6224f72b 1876 case 1:
f86702cc 1877 STATUS_ALL_FAILURE;
4633a7c4 1878 /* FALL THROUGH */
6224f72b 1879 case 2:
4633a7c4 1880 /* my_exit() was called */
3280af22 1881 PL_curstash = PL_defstash;
4633a7c4 1882 FREETMPS;
14dd3ad8 1883 JMPENV_POP;
cc3604b1 1884 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1885 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1886 my_exit_jump();
4633a7c4 1887 /* NOTREACHED */
6224f72b 1888 case 3:
3280af22 1889 if (PL_restartop) {
533c011a 1890 PL_op = PL_restartop;
3280af22 1891 PL_restartop = 0;
312caa8e 1892 goto redo_body;
4633a7c4 1893 }
3280af22 1894 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1895 if (flags & G_ARRAY)
1896 retval = 0;
1897 else {
1898 retval = 1;
3280af22 1899 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1900 }
312caa8e 1901 break;
4633a7c4
LW		 1902 }
1903
14dd3ad8 1904 JMPENV_POP;
4633a7c4 1905 if (flags & G_DISCARD) {
3280af22 1906 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1907 retval = 0;
1908 FREETMPS;
1909 LEAVE;
1910 }
533c011a 1911 PL_op = oldop;
4633a7c4
LW		 1912 return retval;
1913}
1914
954c1994
GS		 1915/*
1916=for apidoc p||eval_pv
1917
1918Tells Perl to C<eval> the given string and return an SV* result.
1919
1920=cut
1921*/
1922
137443ea 1923SV*
864dbfa3 1924Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1925{
1926 dSP;
1927 SV* sv = newSVpv(p, 0);
1928
864dbfa3 1929 eval_sv(sv, G_SCALAR);
137443ea 1930 SvREFCNT_dec(sv);
1931
1932 SPAGAIN;
1933 sv = POPs;
1934 PUTBACK;
1935
2d8e6c8d
GS		 1936 if (croak_on_error && SvTRUE(ERRSV)) {
1937 STRLEN n_a;
cea2e8a9 1938 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1939 }
137443ea 1940
1941 return sv;
1942}
1943
4633a7c4
LW		 1944/* Require a module. */
1945
954c1994
GS		 1946/*
1947=for apidoc p||require_pv
1948
1949Tells Perl to C<require> a module.
1950
1951=cut
1952*/
1953
4633a7c4 1954void
864dbfa3 1955Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1956{
d3acc0f7
JP		 1957 SV* sv;
1958 dSP;
e788e7d3 1959 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 1960 PUTBACK;
1961 sv = sv_newmortal();
4633a7c4
LW		 1962 sv_setpv(sv, "require '");
1963 sv_catpv(sv, pv);
1964 sv_catpv(sv, "'");
864dbfa3 1965 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 1966 SPAGAIN;
1967 POPSTACK;
79072805
LW		 1968}
1969
79072805 1970void
864dbfa3 1971Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 1972{
1973 register GV *gv;
1974
155aba94 1975 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW		 1976 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1977}
1978
76e3520e 1979STATIC void
cea2e8a9 1980S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 1981{
ab821d7f 1982 /* This message really ought to be max 23 lines.
1983 * Removed -h because the user already knows that opton. Others? */
fb73857a 1984
76e3520e 1985 static char *usage_msg[] = {
fb73857a 1986"-0[octal] specify record separator (\\0, if no argument)",
1987"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 1988"-C enable native wide character system interfaces",
1950ee41 1989"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 1990"-d[:debugger] run program under debugger",
1991"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1992"-e 'command' one line of program (several -e's allowed, omit programfile)",
1993"-F/pattern/ split() pattern for -a switch (//'s are optional)",
1994"-i[extension] edit <> files in place (makes backup if extension supplied)",
1995"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 1996"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 1997"-[mM][-]module execute `use/no module...' before executing program",
1998"-n assume 'while (<>) { ... }' loop around program",
1999"-p assume loop like -n but print line also, like sed",
2000"-P run program through C preprocessor before compilation",
2001"-s enable rudimentary parsing for switches after programfile",
2002"-S look for programfile using PATH environment variable",
2003"-T enable tainting checks",
2004"-u dump core after parsing program",
fb73857a 2005"-U allow unsafe operations",
aac3bd0d
GS		 2006"-v print version, subversion (includes VERY IMPORTANT perl info)",
2007"-V[:variable] print configuration summary (or a single Config.pm variable)",
2008"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2009"-W enable all warnings",
2010"-X disable all warnings",
fb73857a 2011"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2012"\n",
2013NULL
2014};
76e3520e 2015 char **p = usage_msg;
fb73857a 2016
b0e47665
GS		 2017 PerlIO_printf(PerlIO_stdout(),
2018 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2019 name);
fb73857a 2020 while (*p)
b0e47665 2021 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2022}
2023
79072805
LW		 2024/* This routine handles any switches that can be given during run */
2025
2026char *
864dbfa3 2027Perl_moreswitches(pTHX_ char *s)
79072805 2028{
ba210ebe 2029 STRLEN numlen;
c07a80fd 2030 U32 rschar;
79072805
LW		 2031
2032 switch (*s) {
2033 case '0':
a863c7d1 2034 {
b21ed0a9 2035 numlen = 0; /* disallow underscores */
dff6d3cd 2036 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2037 SvREFCNT_dec(PL_nrs);
c07a80fd 2038 if (rschar & ~((U8)~0))
3280af22 2039 PL_nrs = &PL_sv_undef;
c07a80fd 2040 else if (!rschar && numlen >= 2)
79cb57f6 2041 PL_nrs = newSVpvn("", 0);
c07a80fd 2042 else {
2043 char ch = rschar;
79cb57f6 2044 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2045 }
2046 return s + numlen;
a863c7d1 2047 }
46487f74
GS		 2048 case 'C':
2049 PL_widesyscalls = TRUE;
2050 s++;
2051 return s;
2304df62 2052 case 'F':
3280af22
NIS		 2053 PL_minus_F = TRUE;
2054 PL_splitstr = savepv(s + 1);
2304df62
AD		 2055 s += strlen(s);
2056 return s;
79072805 2057 case 'a':
3280af22 2058 PL_minus_a = TRUE;
79072805
LW		 2059 s++;
2060 return s;
2061 case 'c':
3280af22 2062 PL_minus_c = TRUE;
79072805
LW		 2063 s++;
2064 return s;
2065 case 'd':
bbce6d69 2066 forbid_setid("-d");
4633a7c4 2067 s++;
70c94a19
RR		 2068 /* The following permits -d:Mod to accepts arguments following an =
2069 in the fashion that -MSome::Mod does. */
2070 if (*s == ':' || *s == '=') {
2071 char *start;
2072 SV *sv;
2073 sv = newSVpv("use Devel::", 0);
2074 start = ++s;
2075 /* We now allow -d:Module=Foo,Bar */
2076 while(isALNUM(*s) || *s==':') ++s;
2077 if (*s != '=')
2078 sv_catpv(sv, start);
2079 else {
2080 sv_catpvn(sv, start, s-start);
2081 sv_catpv(sv, " split(/,/,q{");
2082 sv_catpv(sv, ++s);
2083 sv_catpv(sv, "})");
2084 }
4633a7c4 2085 s += strlen(s);
70c94a19 2086 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2087 }
ed094faf 2088 if (!PL_perldb) {
3280af22 2089 PL_perldb = PERLDB_ALL;
a0d0e21e 2090 init_debugger();
ed094faf 2091 }
79072805
LW		 2092 return s;
2093 case 'D':
0453d815 2094 {
79072805 2095#ifdef DEBUGGING
bbce6d69 2096 forbid_setid("-D");
79072805 2097 if (isALPHA(s[1])) {
607df283 2098 static char debopts[] = "psltocPmfrxuLHXDST";
79072805
LW		 2099 char *d;
2100
93a17b20 2101 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2102 PL_debug |= 1 << (d - debopts);
79072805
LW		 2103 }
2104 else {
3280af22 2105 PL_debug = atoi(s+1);
79072805
LW		 2106 for (s++; isDIGIT(*s); s++) ;
2107 }
3280af22 2108 PL_debug |= 0x80000000;
79072805 2109#else
0453d815
PM		 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':
ac27b0f5 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++;
7889fe52
NIS		 2161 if (PL_ors_sv) {
2162 SvREFCNT_dec(PL_ors_sv);
2163 PL_ors_sv = Nullsv;
2164 }
79072805 2165 if (isDIGIT(*s)) {
7889fe52 2166 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2167 numlen = 0; /* disallow underscores */
7889fe52 2168 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2169 s += numlen;
2170 }
2171 else {
3280af22 2172 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2173 PL_ors_sv = newSVpvn("\n\n",2);
2174 }
2175 else {
2176 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2177 }
79072805
LW		 2178 }
2179 return s;
1a30305b 2180 case 'M':
bbce6d69 2181 forbid_setid("-M"); /* XXX ? */
1a30305b 2182 /* FALL THROUGH */
2183 case 'm':
bbce6d69 2184 forbid_setid("-m"); /* XXX ? */
1a30305b 2185 if (*++s) {
a5f75d66 2186 char *start;
11343788 2187 SV *sv;
a5f75d66
AD		 2188 char *use = "use ";
2189 /* -M-foo == 'no foo' */
2190 if (*s == '-') { use = "no "; ++s; }
11343788 2191 sv = newSVpv(use,0);
a5f75d66 2192 start = s;
1a30305b 2193 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2194 while(isALNUM(*s) || *s==':') ++s;
2195 if (*s != '=') {
11343788 2196 sv_catpv(sv, start);
c07a80fd 2197 if (*(start-1) == 'm') {
2198 if (*s != '\0')
cea2e8a9 2199 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2200 sv_catpv( sv, " ()");
c07a80fd 2201 }
2202 } else {
6df41af2 2203 if (s == start)
be98fb35
GS		 2204 Perl_croak(aTHX_ "Module name required with -%c option",
2205 s[-1]);
11343788
MB		 2206 sv_catpvn(sv, start, s-start);
2207 sv_catpv(sv, " split(/,/,q{");
2208 sv_catpv(sv, ++s);
2209 sv_catpv(sv, "})");
c07a80fd 2210 }
1a30305b 2211 s += strlen(s);
5c831c24 2212 if (!PL_preambleav)
3280af22
NIS		 2213 PL_preambleav = newAV();
2214 av_push(PL_preambleav, sv);
1a30305b 2215 }
2216 else
cea2e8a9 2217 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2218 return s;
79072805 2219 case 'n':
3280af22 2220 PL_minus_n = TRUE;
79072805
LW		 2221 s++;
2222 return s;
2223 case 'p':
3280af22 2224 PL_minus_p = TRUE;
79072805
LW		 2225 s++;
2226 return s;
2227 case 's':
bbce6d69 2228 forbid_setid("-s");
3280af22 2229 PL_doswitches = TRUE;
79072805
LW		 2230 s++;
2231 return s;
463ee0b2 2232 case 'T':
3280af22 2233 if (!PL_tainting)
cea2e8a9 2234 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2235 s++;
2236 return s;
79072805 2237 case 'u':
bf4acbe4
GS		 2238#ifdef MACOS_TRADITIONAL
2239 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2240#endif
3280af22 2241 PL_do_undump = TRUE;
79072805
LW		 2242 s++;
2243 return s;
2244 case 'U':
3280af22 2245 PL_unsafe = TRUE;
79072805
LW		 2246 s++;
2247 return s;
2248 case 'v':
b0e47665 2249 PerlIO_printf(PerlIO_stdout(),
d2560b70 2250 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2251 PL_patchlevel, ARCHNAME));
fb73857a 2252#if defined(LOCAL_PATCH_COUNT)
2253 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2254 PerlIO_printf(PerlIO_stdout(),
2255 "\n(with %d registered patch%s, "
2256 "see perl -V for more detail)",
2257 (int)LOCAL_PATCH_COUNT,
2258 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2259#endif
1a30305b 2260
b0e47665 2261 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2262 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2263#ifdef MACOS_TRADITIONAL
2264 PerlIO_printf(PerlIO_stdout(),
2265 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2266#endif
79072805 2267#ifdef MSDOS
b0e47665
GS		 2268 PerlIO_printf(PerlIO_stdout(),
2269 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2270#endif
2271#ifdef DJGPP
b0e47665
GS		 2272 PerlIO_printf(PerlIO_stdout(),
2273 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2274 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2275#endif
79072805 2276#ifdef OS2
b0e47665
GS		 2277 PerlIO_printf(PerlIO_stdout(),
2278 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2279 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2280#endif
79072805 2281#ifdef atarist
b0e47665
GS		 2282 PerlIO_printf(PerlIO_stdout(),
2283 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2284#endif
a3f9223b 2285#ifdef __BEOS__
b0e47665
GS		 2286 PerlIO_printf(PerlIO_stdout(),
2287 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2288#endif
1d84e8df 2289#ifdef MPE
b0e47665
GS		 2290 PerlIO_printf(PerlIO_stdout(),
2291 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2292#endif
9d116dd7 2293#ifdef OEMVS
b0e47665
GS		 2294 PerlIO_printf(PerlIO_stdout(),
2295 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2296#endif
495c5fdc 2297#ifdef __VOS__
b0e47665
GS		 2298 PerlIO_printf(PerlIO_stdout(),
2299 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2300#endif
092bebab 2301#ifdef __OPEN_VM
b0e47665
GS		 2302 PerlIO_printf(PerlIO_stdout(),
2303 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2304#endif
a1a0e61e 2305#ifdef POSIX_BC
b0e47665
GS		 2306 PerlIO_printf(PerlIO_stdout(),
2307 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2308#endif
61ae2fbf 2309#ifdef __MINT__
b0e47665
GS		 2310 PerlIO_printf(PerlIO_stdout(),
2311 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2312#endif
f83d2536 2313#ifdef EPOC
b0e47665
GS		 2314 PerlIO_printf(PerlIO_stdout(),
2315 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2316#endif
baed7233
DL		 2317#ifdef BINARY_BUILD_NOTICE
2318 BINARY_BUILD_NOTICE;
2319#endif
b0e47665
GS		 2320 PerlIO_printf(PerlIO_stdout(),
2321 "\n\
79072805 2322Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2323GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2324Complete documentation for Perl, including FAQ lists, should be found on\n\
2325this system using `man perl' or `perldoc perl'. If you have access to the\n\
2326Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2327 PerlProc_exit(0);
79072805 2328 case 'w':
599cee73 2329 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2330 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2331 s++;
2332 return s;
2333 case 'W':
ac27b0f5 2334 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2335 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2336 s++;
2337 return s;
2338 case 'X':
ac27b0f5 2339 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2340 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2341 s++;
2342 return s;
a0d0e21e 2343 case '*':
79072805
LW		 2344 case ' ':
2345 if (s[1] == '-') /* Additional switches on #! line. */
2346 return s+2;
2347 break;
a0d0e21e 2348 case '-':
79072805 2349 case 0:
51882d45 2350#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2351 case '\r':
2352#endif
79072805
LW		 2353 case '\n':
2354 case '\t':
2355 break;
aa689395 2356#ifdef ALTERNATE_SHEBANG
2357 case 'S': /* OS/2 needs -S on "extproc" line. */
2358 break;
2359#endif
a0d0e21e 2360 case 'P':
3280af22 2361 if (PL_preprocess)
a0d0e21e
LW		 2362 return s+1;
2363 /* FALL THROUGH */
79072805 2364 default:
cea2e8a9 2365 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2366 }
2367 return Nullch;
2368}
2369
2370/* compliments of Tom Christiansen */
2371
2372/* unexec() can be found in the Gnu emacs distribution */
ee580363 2373/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2374
2375void
864dbfa3 2376Perl_my_unexec(pTHX)
79072805
LW		 2377{
2378#ifdef UNEXEC
46fc3d4c 2379 SV* prog;
2380 SV* file;
ee580363 2381 int status = 1;
79072805
LW		 2382 extern int etext;
2383
ee580363 2384 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2385 sv_catpv(prog, "/perl");
6b88bc9c 2386 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2387 sv_catpv(file, ".perldump");
79072805 2388
ee580363
GS		 2389 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2390 /* unexec prints msg to stderr in case of failure */
6ad3d225 2391 PerlProc_exit(status);
79072805 2392#else
a5f75d66
AD		 2393# ifdef VMS
2394# include <lib$routines.h>
2395 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2396# else
79072805 2397 ABORT(); /* for use with undump */
aa689395 2398# endif
a5f75d66 2399#endif
79072805
LW		 2400}
2401
cb68f92d
GS		 2402/* initialize curinterp */
2403STATIC void
cea2e8a9 2404S_init_interp(pTHX)
cb68f92d
GS		 2405{
2406
066ef5b5 2407#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2408#define I_REINIT \
6b88bc9c
GS		 2409 STMT_START { \
2410 PL_chopset = " \n-"; \
2411 PL_copline = NOLINE; \
2412 PL_curcop = &PL_compiling;\
2413 PL_curcopdb = NULL; \
2414 PL_dbargs = 0; \
3967c732 2415 PL_dumpindent = 4; \
6b88bc9c
GS		 2416 PL_laststatval = -1; \
2417 PL_laststype = OP_STAT; \
2418 PL_maxscream = -1; \
2419 PL_maxsysfd = MAXSYSFD; \
2420 PL_statname = Nullsv; \
2421 PL_tmps_floor = -1; \
2422 PL_tmps_ix = -1; \
2423 PL_op_mask = NULL; \
6b88bc9c
GS		 2424 PL_laststatval = -1; \
2425 PL_laststype = OP_STAT; \
2426 PL_mess_sv = Nullsv; \
2427 PL_splitstr = " "; \
2428 PL_generation = 100; \
2429 PL_exitlist = NULL; \
2430 PL_exitlistlen = 0; \
2431 PL_regindent = 0; \
2432 PL_in_clean_objs = FALSE; \
2433 PL_in_clean_all = FALSE; \
2434 PL_profiledata = NULL; \
2435 PL_rsfp = Nullfp; \
2436 PL_rsfp_filters = Nullav; \
24d3c518 2437 PL_dirty = FALSE; \
cb68f92d 2438 } STMT_END
9666903d 2439 I_REINIT;
066ef5b5
GS		 2440#else
2441# ifdef MULTIPLICITY
2442# define PERLVAR(var,type)
51371543 2443# define PERLVARA(var,n,type)
cea2e8a9 2444# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2445# if defined(USE_THREADS)
2446# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2447# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2448# else /* !USE_THREADS */
2449# define PERLVARI(var,type,init) aTHX->var = init;
2450# define PERLVARIC(var,type,init) aTHX->var = init;
2451# endif /* USE_THREADS */
cea2e8a9 2452# else
c5be433b
GS		 2453# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2454# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2455# endif
066ef5b5
GS		 2456# include "intrpvar.h"
2457# ifndef USE_THREADS
2458# include "thrdvar.h"
2459# endif
2460# undef PERLVAR
51371543 2461# undef PERLVARA
066ef5b5
GS		 2462# undef PERLVARI
2463# undef PERLVARIC
3967c732 2464# else
066ef5b5 2465# define PERLVAR(var,type)
51371543 2466# define PERLVARA(var,n,type)
533c011a
NIS		 2467# define PERLVARI(var,type,init) PL_##var = init;
2468# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2469# include "intrpvar.h"
2470# ifndef USE_THREADS
2471# include "thrdvar.h"
2472# endif
2473# undef PERLVAR
51371543 2474# undef PERLVARA
066ef5b5
GS		 2475# undef PERLVARI
2476# undef PERLVARIC
2477# endif
cb68f92d
GS		 2478#endif
2479
cb68f92d
GS		 2480}
2481
76e3520e 2482STATIC void
cea2e8a9 2483S_init_main_stash(pTHX)
79072805 2484{
463ee0b2 2485 GV *gv;
6e72f9df 2486
2487 /* Note that strtab is a rather special HV. Assumptions are made
2488 about not iterating on it, and not adding tie magic to it.
2489 It is properly deallocated in perl_destruct() */
3280af22 2490 PL_strtab = newHV();
5f08fbcd
GS		 2491#ifdef USE_THREADS
2492 MUTEX_INIT(&PL_strtab_mutex);
2493#endif
3280af22
NIS		 2494 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2495 hv_ksplit(PL_strtab, 512);
ac27b0f5 2496
3280af22 2497 PL_curstash = PL_defstash = newHV();
79cb57f6 2498 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2499 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2500 SvREFCNT_dec(GvHV(gv));
3280af22 2501 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2502 SvREADONLY_on(gv);
3280af22
NIS		 2503 HvNAME(PL_defstash) = savepv("main");
2504 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2505 GvMULTI_on(PL_incgv);
2506 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2507 GvMULTI_on(PL_hintgv);
2508 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2509 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2510 GvMULTI_on(PL_errgv);
2511 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2512 GvMULTI_on(PL_replgv);
cea2e8a9 2513 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2514 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2515 sv_setpvn(ERRSV, "", 0);
3280af22 2516 PL_curstash = PL_defstash;
11faa288 2517 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2518 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2519 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2520 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2521 /* We must init $/ before switches are processed. */
864dbfa3 2522 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2523}
2524
76e3520e 2525STATIC void
cea2e8a9 2526S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2527{
6c4ab083 2528 *fdscript = -1;
79072805 2529
3280af22
NIS		 2530 if (PL_e_script) {
2531 PL_origfilename = savepv("-e");
96436eeb 2532 }
6c4ab083
GS		 2533 else {
2534 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2535 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2536
2537 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2538 char *s = scriptname + 8;
2539 *fdscript = atoi(s);
2540 while (isDIGIT(*s))
2541 s++;
2542 if (*s) {
2543 scriptname = savepv(s + 1);
3280af22
NIS		 2544 Safefree(PL_origfilename);
2545 PL_origfilename = scriptname;
6c4ab083
GS		 2546 }
2547 }
2548 }
2549
f4dd75d9
GS		 2550#ifdef USE_ITHREADS
2551 Safefree(CopFILE(PL_curcop));
2552#else
2553 SvREFCNT_dec(CopFILEGV(PL_curcop));
2554#endif
57843af0 2555 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2556 if (strEQ(PL_origfilename,"-"))
79072805 2557 scriptname = "";
01f988be 2558 if (*fdscript >= 0) {
3280af22 2559 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2560#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2561 if (PL_rsfp)
2562 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2563#endif
2564 }
3280af22 2565 else if (PL_preprocess) {
46fc3d4c 2566 char *cpp_cfg = CPPSTDIN;
79cb57f6 2567 SV *cpp = newSVpvn("",0);
46fc3d4c 2568 SV *cmd = NEWSV(0,0);
2569
2570 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2571 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2572 sv_catpv(cpp, cpp_cfg);
79072805 2573
0df16ed7 2574 sv_catpvn(sv, "-I", 2);
fed7345c 2575 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2576
52853b95 2577#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2578 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2579sed %s -e \"/^[^#]/b\" \
2580 -e \"/^#[ ]*include[ ]/b\" \
2581 -e \"/^#[ ]*define[ ]/b\" \
2582 -e \"/^#[ ]*if[ ]/b\" \
2583 -e \"/^#[ ]*ifdef[ ]/b\" \
2584 -e \"/^#[ ]*ifndef[ ]/b\" \
2585 -e \"/^#[ ]*else/b\" \
2586 -e \"/^#[ ]*elif[ ]/b\" \
2587 -e \"/^#[ ]*undef[ ]/b\" \
2588 -e \"/^#[ ]*endif/b\" \
2589 -e \"s/^#.*//\" \
894356b3 2590 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2591 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2592#else
092bebab 2593# ifdef __OPEN_VM
cea2e8a9 2594 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2595%s %s -e '/^[^#]/b' \
2596 -e '/^#[ ]*include[ ]/b' \
2597 -e '/^#[ ]*define[ ]/b' \
2598 -e '/^#[ ]*if[ ]/b' \
2599 -e '/^#[ ]*ifdef[ ]/b' \
2600 -e '/^#[ ]*ifndef[ ]/b' \
2601 -e '/^#[ ]*else/b' \
2602 -e '/^#[ ]*elif[ ]/b' \
2603 -e '/^#[ ]*undef[ ]/b' \
2604 -e '/^#[ ]*endif/b' \
2605 -e 's/^[ ]*#.*//' \
894356b3 2606 %s | %"SVf" %"SVf" %s",
092bebab 2607# else
cea2e8a9 2608 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2609%s %s -e '/^[^#]/b' \
2610 -e '/^#[ ]*include[ ]/b' \
2611 -e '/^#[ ]*define[ ]/b' \
2612 -e '/^#[ ]*if[ ]/b' \
2613 -e '/^#[ ]*ifdef[ ]/b' \
2614 -e '/^#[ ]*ifndef[ ]/b' \
2615 -e '/^#[ ]*else/b' \
2616 -e '/^#[ ]*elif[ ]/b' \
2617 -e '/^#[ ]*undef[ ]/b' \
2618 -e '/^#[ ]*endif/b' \
2619 -e 's/^[ ]*#.*//' \
894356b3 2620 %s | %"SVf" -C %"SVf" %s",
092bebab 2621# endif
79072805
LW		 2622#ifdef LOC_SED
2623 LOC_SED,
2624#else
2625 "sed",
2626#endif
3280af22 2627 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2628#endif
46fc3d4c 2629 scriptname, cpp, sv, CPPMINUS);
3280af22 2630 PL_doextract = FALSE;
79072805 2631#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2632 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2633#ifdef HAS_SETEUID
b28d0864 2634 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2635#else
2636#ifdef HAS_SETREUID
b28d0864 2637 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2638#else
2639#ifdef HAS_SETRESUID
b28d0864 2640 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2641#else
b28d0864 2642 PerlProc_setuid(PL_uid);
79072805
LW		 2643#endif
2644#endif
85e6fe83 2645#endif
b28d0864 2646 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2647 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2648 }
2649#endif /* IAMSUID */
3280af22 2650 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2651 SvREFCNT_dec(cmd);
2652 SvREFCNT_dec(cpp);
79072805
LW		 2653 }
2654 else if (!*scriptname) {
bbce6d69 2655 forbid_setid("program input from stdin");
3280af22 2656 PL_rsfp = PerlIO_stdin();
79072805 2657 }
96436eeb 2658 else {
3280af22 2659 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2660#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2661 if (PL_rsfp)
2662 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2663#endif
2664 }
3280af22 2665 if (!PL_rsfp) {
13281fa4 2666#ifdef DOSUID
a687059c 2667#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2668 if (PL_euid &&
cc49e20b 2669 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2670 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2671 {
46fc3d4c 2672 /* try again */
a7cb1f99 2673 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2674 (int)PERL_REVISION, (int)PERL_VERSION,
2675 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2676 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2677 }
2678#endif
2679#endif
cea2e8a9 2680 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2681 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2682 }
79072805 2683}
8d063cd8 2684
7b89560d
JH		 2685/* Mention
2686 * I_SYSSTATVFS HAS_FSTATVFS
2687 * I_SYSMOUNT
c890dc6c 2688 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2689 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2690 * here so that metaconfig picks them up. */
2691
104d25b7 2692#ifdef IAMSUID
864dbfa3 2693STATIC int
e688b231 2694S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2695{
0545a864
JH		 2696 int check_okay = 0; /* able to do all the required sys/libcalls */
2697 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2698/*
ad27e871 2699 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2700 * fstatvfs() is UNIX98.
0545a864 2701 * fstatfs() is 4.3 BSD.
ad27e871 2702 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2703 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2704 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2705 */
2706
6439433f
JH		 2707#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2708
2709# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2710 defined(HAS_FSTATVFS)
2711# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2712 struct statvfs stfs;
6439433f 2713
104d25b7
JH		 2714 check_okay = fstatvfs(fd, &stfs) == 0;
2715 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2716# endif /* fstatvfs */
ac27b0f5 2717
6439433f
JH		 2718# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2719 defined(PERL_MOUNT_NOSUID) && \
2720 defined(HAS_FSTATFS) && \
2721 defined(HAS_STRUCT_STATFS) && \
2722 defined(HAS_STRUCT_STATFS_F_FLAGS)
2723# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2724 struct statfs stfs;
6439433f 2725
104d25b7 2726 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2727 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2728# endif /* fstatfs */
2729
2730# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2731 defined(PERL_MOUNT_NOSUID) && \
2732 defined(HAS_FSTAT) && \
2733 defined(HAS_USTAT) && \
2734 defined(HAS_GETMNT) && \
2735 defined(HAS_STRUCT_FS_DATA) && \
2736 defined(NOSTAT_ONE)
2737# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2738 struct stat fdst;
6439433f 2739
0545a864 2740 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2741 struct ustat us;
2742 if (ustat(fdst.st_dev, &us) == 0) {
2743 struct fs_data fsd;
2744 /* NOSTAT_ONE here because we're not examining fields which
2745 * vary between that case and STAT_ONE. */
ad27e871 2746 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2747 size_t cmplen = sizeof(us.f_fname);
2748 if (sizeof(fsd.fd_req.path) < cmplen)
2749 cmplen = sizeof(fsd.fd_req.path);
2750 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2751 fdst.st_dev == fsd.fd_req.dev) {
2752 check_okay = 1;
2753 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2754 }
2755 }
2756 }
2757 }
0545a864 2758 }
6439433f
JH		 2759# endif /* fstat+ustat+getmnt */
2760
2761# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2762 defined(HAS_GETMNTENT) && \
2763 defined(HAS_HASMNTOPT) && \
2764 defined(MNTOPT_NOSUID)
2765# define FD_ON_NOSUID_CHECK_OKAY
2766 FILE *mtab = fopen("/etc/mtab", "r");
2767 struct mntent *entry;
2768 struct stat stb, fsb;
104d25b7
JH		 2769
2770 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2771 while (entry = getmntent(mtab)) {
2772 if (stat(entry->mnt_dir, &fsb) == 0
2773 && fsb.st_dev == stb.st_dev)
2774 {
2775 /* found the filesystem */
2776 check_okay = 1;
2777 if (hasmntopt(entry, MNTOPT_NOSUID))
2778 on_nosuid = 1;
2779 break;
2780 } /* A single fs may well fail its stat(). */
2781 }
104d25b7
JH		 2782 }
2783 if (mtab)
6439433f
JH		 2784 fclose(mtab);
2785# endif /* getmntent+hasmntopt */
0545a864 2786
ac27b0f5 2787 if (!check_okay)
0545a864 2788 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2789 return on_nosuid;
2790}
2791#endif /* IAMSUID */
2792
76e3520e 2793STATIC void
cea2e8a9 2794S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2795{
155aba94 2796#ifdef IAMSUID
96436eeb 2797 int which;
155aba94 2798#endif
96436eeb 2799
13281fa4
LW		 2800 /* do we need to emulate setuid on scripts? */
2801
2802 /* This code is for those BSD systems that have setuid #! scripts disabled
2803 * in the kernel because of a security problem. Merely defining DOSUID
2804 * in perl will not fix that problem, but if you have disabled setuid
2805 * scripts in the kernel, this will attempt to emulate setuid and setgid
2806 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2807 * root version must be called suidperl or sperlN.NNN. If regular perl
2808 * discovers that it has opened a setuid script, it calls suidperl with
2809 * the same argv that it had. If suidperl finds that the script it has
2810 * just opened is NOT setuid root, it sets the effective uid back to the
2811 * uid. We don't just make perl setuid root because that loses the
2812 * effective uid we had before invoking perl, if it was different from the
2813 * uid.
13281fa4
LW		 2814 *
2815 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2816 * be defined in suidperl only. suidperl must be setuid root. The
2817 * Configure script will set this up for you if you want it.
2818 */
a687059c 2819
13281fa4 2820#ifdef DOSUID
6e72f9df 2821 char *s, *s2;
a0d0e21e 2822
b28d0864 2823 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2824 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2825 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2826 I32 len;
2d8e6c8d 2827 STRLEN n_a;
13281fa4 2828
a687059c 2829#ifdef IAMSUID
fe14fcc3 2830#ifndef HAS_SETREUID
a687059c
LW		 2831 /* On this access check to make sure the directories are readable,
2832 * there is actually a small window that the user could use to make
2833 * filename point to an accessible directory. So there is a faint
2834 * chance that someone could execute a setuid script down in a
2835 * non-accessible directory. I don't know what to do about that.
2836 * But I don't think it's too important. The manual lies when
2837 * it says access() is useful in setuid programs.
2838 */
cc49e20b 2839 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2840 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2841#else
2842 /* If we can swap euid and uid, then we can determine access rights
2843 * with a simple stat of the file, and then compare device and
2844 * inode to make sure we did stat() on the same file we opened.
2845 * Then we just have to make sure he or she can execute it.
2846 */
2847 {
2848 struct stat tmpstatbuf;
2849
85e6fe83
LW		 2850 if (
2851#ifdef HAS_SETREUID
b28d0864 2852 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2853#else
2854# if HAS_SETRESUID
b28d0864 2855 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2856# endif
85e6fe83 2857#endif
b28d0864 2858 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2859 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2860 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2861 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2862#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2863 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2864 Perl_croak(aTHX_ "Permission denied");
104d25b7 2865#endif
b28d0864
NIS		 2866 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2867 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2868 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2869 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2870 }
85e6fe83
LW		 2871 if (
2872#ifdef HAS_SETREUID
b28d0864 2873 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2874#else
2875# if defined(HAS_SETRESUID)
b28d0864 2876 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2877# endif
85e6fe83 2878#endif
b28d0864 2879 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2880 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2881 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2882 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2883 }
fe14fcc3 2884#endif /* HAS_SETREUID */
a687059c
LW		 2885#endif /* IAMSUID */
2886
b28d0864 2887 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2888 Perl_croak(aTHX_ "Permission denied");
b28d0864 2889 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2890 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2891 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2892 CopLINE_inc(PL_curcop);
6b88bc9c 2893 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2894 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2895 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2896 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2897 if (*s == ' ') s++;
45d8adaa 2898 while (!isSPACE(*s)) s++;
2d8e6c8d 2899 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2900 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2901 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2902 Perl_croak(aTHX_ "Not a perl script");
a687059c 2903 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2904 /*
2905 * #! arg must be what we saw above. They can invoke it by
2906 * mentioning suidperl explicitly, but they may not add any strange
2907 * arguments beyond what #! says if they do invoke suidperl that way.
2908 */
2909 len = strlen(validarg);
2910 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2911 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2912 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2913
2914#ifndef IAMSUID
b28d0864
NIS		 2915 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2916 PL_euid == PL_statbuf.st_uid)
2917 if (!PL_do_undump)
cea2e8a9 2918 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2919FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2920#endif /* IAMSUID */
13281fa4 2921
b28d0864
NIS		 2922 if (PL_euid) { /* oops, we're not the setuid root perl */
2923 (void)PerlIO_close(PL_rsfp);
13281fa4 2924#ifndef IAMSUID
46fc3d4c 2925 /* try again */
a7cb1f99 2926 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2927 (int)PERL_REVISION, (int)PERL_VERSION,
2928 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2929#endif
cea2e8a9 2930 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2931 }
2932
b28d0864 2933 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2934#ifdef HAS_SETEGID
b28d0864 2935 (void)setegid(PL_statbuf.st_gid);
a687059c 2936#else
fe14fcc3 2937#ifdef HAS_SETREGID
b28d0864 2938 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 2939#else
2940#ifdef HAS_SETRESGID
b28d0864 2941 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2942#else
b28d0864 2943 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 2944#endif
2945#endif
85e6fe83 2946#endif
b28d0864 2947 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2948 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2949 }
b28d0864
NIS		 2950 if (PL_statbuf.st_mode & S_ISUID) {
2951 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2952#ifdef HAS_SETEUID
b28d0864 2953 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2954#else
fe14fcc3 2955#ifdef HAS_SETREUID
b28d0864 2956 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 2957#else
2958#ifdef HAS_SETRESUID
b28d0864 2959 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2960#else
b28d0864 2961 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 2962#endif
2963#endif
85e6fe83 2964#endif
b28d0864 2965 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2966 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2967 }
b28d0864 2968 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2969#ifdef HAS_SETEUID
b28d0864 2970 (void)seteuid((Uid_t)PL_uid);
a687059c 2971#else
fe14fcc3 2972#ifdef HAS_SETREUID
b28d0864 2973 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2974#else
85e6fe83 2975#ifdef HAS_SETRESUID
b28d0864 2976 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2977#else
b28d0864 2978 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2979#endif
a687059c
LW		 2980#endif
2981#endif
b28d0864 2982 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2983 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2984 }
748a9306 2985 init_ids();
b28d0864 2986 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2987 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 2988 }
2989#ifdef IAMSUID
6b88bc9c 2990 else if (PL_preprocess)
cea2e8a9 2991 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2992 else if (fdscript >= 0)
cea2e8a9 2993 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 2994 else
cea2e8a9 2995 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 2996
2997 /* We absolutely must clear out any saved ids here, so we */
2998 /* exec the real perl, substituting fd script for scriptname. */
2999 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3000 PerlIO_rewind(PL_rsfp);
3001 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3002 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3003 if (!PL_origargv[which])
cea2e8a9
GS		 3004 Perl_croak(aTHX_ "Permission denied");
3005 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3006 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3007#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3008 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3009#endif
a7cb1f99 3010 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3011 (int)PERL_REVISION, (int)PERL_VERSION,
3012 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3013 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3014#endif /* IAMSUID */
a687059c 3015#else /* !DOSUID */
3280af22 3016 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3017#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3018 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3019 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3020 ||
b28d0864 3021 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3022 )
b28d0864 3023 if (!PL_do_undump)
cea2e8a9 3024 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3025FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3026#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3027 /* not set-id, must be wrapped */
a687059c 3028 }
13281fa4 3029#endif /* DOSUID */
79072805 3030}
13281fa4 3031
76e3520e 3032STATIC void
cea2e8a9 3033S_find_beginning(pTHX)
79072805 3034{
6e72f9df 3035 register char *s, *s2;
33b78306
LW		 3036
3037 /* skip forward in input to the real script? */
3038
bbce6d69 3039 forbid_setid("-x");
bf4acbe4
GS		 3040#ifdef MACOS_TRADITIONAL
3041 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
ac27b0f5 3042
bf4acbe4
GS		 3043 while (PL_doextract || gMacPerl_AlwaysExtract) {
3044 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3045 if (!gMacPerl_AlwaysExtract)
3046 Perl_croak(aTHX_ "No Perl script found in input\n");
3047
3048 if (PL_doextract) /* require explicit override ? */
3049 if (!OverrideExtract(PL_origfilename))
3050 Perl_croak(aTHX_ "User aborted script\n");
3051 else
3052 PL_doextract = FALSE;
3053
3054 /* Pater peccavi, file does not have #! */
3055 PerlIO_rewind(PL_rsfp);
ac27b0f5 3056
bf4acbe4
GS		 3057 break;
3058 }
3059#else
3280af22
NIS		 3060 while (PL_doextract) {
3061 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3062 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3063#endif
6e72f9df 3064 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3065 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3066 PL_doextract = FALSE;
6e72f9df 3067 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3068 s2 = s;
3069 while (*s == ' ' || *s == '\t') s++;
3070 if (*s++ == '-') {
3071 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3072 if (strnEQ(s2-4,"perl",4))
3073 /*SUPPRESS 530*/
155aba94
GS		 3074 while ((s = moreswitches(s)))
3075 ;
33b78306 3076 }
83025b21
LW		 3077 }
3078 }
3079}
3080
afe37c7d 3081
76e3520e 3082STATIC void
cea2e8a9 3083S_init_ids(pTHX)
352d5a3a 3084{
d8eceb89
JH		 3085 PL_uid = PerlProc_getuid();
3086 PL_euid = PerlProc_geteuid();
3087 PL_gid = PerlProc_getgid();
3088 PL_egid = PerlProc_getegid();
748a9306 3089#ifdef VMS
b28d0864
NIS		 3090 PL_uid |= PL_gid << 16;
3091 PL_euid |= PL_egid << 16;
748a9306 3092#endif
3280af22 3093 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3094}
79072805 3095
76e3520e 3096STATIC void
cea2e8a9 3097S_forbid_setid(pTHX_ char *s)
bbce6d69 3098{
3280af22 3099 if (PL_euid != PL_uid)
cea2e8a9 3100 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3101 if (PL_egid != PL_gid)
cea2e8a9 3102 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3103}
3104
1ee4443e
IZ		 3105void
3106Perl_init_debugger(pTHX)
748a9306 3107{
1ee4443e
IZ		 3108 HV *ostash = PL_curstash;
3109
3280af22
NIS		 3110 PL_curstash = PL_debstash;
3111 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3112 AvREAL_off(PL_dbargs);
3113 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3114 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3115 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3116 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3117 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3118 sv_setiv(PL_DBsingle, 0);
3280af22 3119 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3120 sv_setiv(PL_DBtrace, 0);
3280af22 3121 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3122 sv_setiv(PL_DBsignal, 0);
1ee4443e 3123 PL_curstash = ostash;
352d5a3a
LW		 3124}
3125
2ce36478
SM		 3126#ifndef STRESS_REALLOC
3127#define REASONABLE(size) (size)
3128#else
3129#define REASONABLE(size) (1) /* unreasonable */
3130#endif
3131
11343788 3132void
cea2e8a9 3133Perl_init_stacks(pTHX)
79072805 3134{
e336de0d 3135 /* start with 128-item stack and 8K cxstack */
3280af22 3136 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3137 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3138 PL_curstackinfo->si_type = PERLSI_MAIN;
3139 PL_curstack = PL_curstackinfo->si_stack;
3140 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3141
3280af22
NIS		 3142 PL_stack_base = AvARRAY(PL_curstack);
3143 PL_stack_sp = PL_stack_base;
3144 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3145
3280af22
NIS		 3146 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3147 PL_tmps_floor = -1;
3148 PL_tmps_ix = -1;
3149 PL_tmps_max = REASONABLE(128);
8990e307 3150
3280af22
NIS		 3151 New(54,PL_markstack,REASONABLE(32),I32);
3152 PL_markstack_ptr = PL_markstack;
3153 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3154
ce2f7c3b 3155 SET_MARK_OFFSET;
e336de0d 3156
3280af22
NIS		 3157 New(54,PL_scopestack,REASONABLE(32),I32);
3158 PL_scopestack_ix = 0;
3159 PL_scopestack_max = REASONABLE(32);
79072805 3160
3280af22
NIS		 3161 New(54,PL_savestack,REASONABLE(128),ANY);
3162 PL_savestack_ix = 0;
3163 PL_savestack_max = REASONABLE(128);
79072805 3164
3280af22
NIS		 3165 New(54,PL_retstack,REASONABLE(16),OP*);
3166 PL_retstack_ix = 0;
3167 PL_retstack_max = REASONABLE(16);
378cc40b 3168}
33b78306 3169
2ce36478
SM		 3170#undef REASONABLE
3171
76e3520e 3172STATIC void
cea2e8a9 3173S_nuke_stacks(pTHX)
6e72f9df 3174{
3280af22
NIS		 3175 while (PL_curstackinfo->si_next)
3176 PL_curstackinfo = PL_curstackinfo->si_next;
3177 while (PL_curstackinfo) {
3178 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3179 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3180 Safefree(PL_curstackinfo->si_cxstack);
3181 Safefree(PL_curstackinfo);
3182 PL_curstackinfo = p;
e336de0d 3183 }
3280af22
NIS		 3184 Safefree(PL_tmps_stack);
3185 Safefree(PL_markstack);
3186 Safefree(PL_scopestack);
3187 Safefree(PL_savestack);
3188 Safefree(PL_retstack);
378cc40b 3189}
33b78306 3190
76e3520e 3191#ifndef PERL_OBJECT
760ac839 3192static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3193#endif
7aa04957 3194
76e3520e 3195STATIC void
cea2e8a9 3196S_init_lexer(pTHX)
8990e307 3197{
76e3520e
GS		 3198#ifdef PERL_OBJECT
3199 PerlIO *tmpfp;
3200#endif
3280af22
NIS		 3201 tmpfp = PL_rsfp;
3202 PL_rsfp = Nullfp;
3203 lex_start(PL_linestr);
3204 PL_rsfp = tmpfp;
79cb57f6 3205 PL_subname = newSVpvn("main",4);
8990e307
LW		 3206}
3207
76e3520e 3208STATIC void
cea2e8a9 3209S_init_predump_symbols(pTHX)
45d8adaa 3210{
93a17b20 3211 GV *tmpgv;
af8c498a 3212 IO *io;
79072805 3213
864dbfa3 3214 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3215 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3216 GvMULTI_on(PL_stdingv);
af8c498a
GS		 3217 io = GvIOp(PL_stdingv);
3218 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3219 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3220 GvMULTI_on(tmpgv);
af8c498a 3221 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3222
85e6fe83 3223 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3224 GvMULTI_on(tmpgv);
af8c498a
GS		 3225 io = GvIOp(tmpgv);
3226 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3227 setdefout(tmpgv);
adbc6bb1 3228 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3229 GvMULTI_on(tmpgv);
af8c498a 3230 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3231
bf49b057
GS		 3232 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3233 GvMULTI_on(PL_stderrgv);
3234 io = GvIOp(PL_stderrgv);
af8c498a 3235 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3236 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3237 GvMULTI_on(tmpgv);
af8c498a 3238 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3239
3280af22 3240 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3241
bf4acbe4
GS		 3242 if (PL_osname)
3243 Safefree(PL_osname);
3244 PL_osname = savepv(OSNAME);
79072805 3245}
33b78306 3246
76e3520e 3247STATIC void
cea2e8a9 3248S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3249{
79072805
LW		 3250 char *s;
3251 SV *sv;
3252 GV* tmpgv;
fe14fcc3 3253
79072805 3254 argc--,argv++; /* skip name of script */
3280af22 3255 if (PL_doswitches) {
79072805
LW		 3256 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3257 if (!argv[0][1])
3258 break;
379d538a 3259 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3260 argc--,argv++;
3261 break;
3262 }
155aba94 3263 if ((s = strchr(argv[0], '='))) {
79072805 3264 *s++ = '\0';
85e6fe83 3265 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3266 }
3267 else
85e6fe83 3268 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3269 }
79072805 3270 }
3280af22
NIS		 3271 PL_toptarget = NEWSV(0,0);
3272 sv_upgrade(PL_toptarget, SVt_PVFM);
3273 sv_setpvn(PL_toptarget, "", 0);
3274 PL_bodytarget = NEWSV(0,0);
3275 sv_upgrade(PL_bodytarget, SVt_PVFM);
3276 sv_setpvn(PL_bodytarget, "", 0);
3277 PL_formtarget = PL_bodytarget;
79072805 3278
bbce6d69 3279 TAINT;
155aba94 3280 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3281#ifdef MACOS_TRADITIONAL
3282 /* $0 is not majick on a Mac */
3283 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3284#else
3280af22 3285 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3286 magicname("0", "0", 1);
bf4acbe4 3287#endif
79072805 3288 }
155aba94 3289 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3290#ifdef OS2
23da6c43 3291 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3292#else
3280af22 3293 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3294#endif
155aba94 3295 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3296 GvMULTI_on(PL_argvgv);
3297 (void)gv_AVadd(PL_argvgv);
3298 av_clear(GvAVn(PL_argvgv));
79072805 3299 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3300 SV *sv = newSVpv(argv[0],0);
3301 av_push(GvAVn(PL_argvgv),sv);
3302 if (PL_widesyscalls)
e84ff256 3303 (void)sv_utf8_decode(sv);
79072805
LW		 3304 }
3305 }
155aba94 3306 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3307 HV *hv;
3280af22
NIS		 3308 GvMULTI_on(PL_envgv);
3309 hv = GvHVn(PL_envgv);
3310 hv_magic(hv, PL_envgv, 'E');
fa6a1c44 3311#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3312 /* Note that if the supplied env parameter is actually a copy
3313 of the global environ then it may now point to free'd memory
3314 if the environment has been modified since. To avoid this
3315 problem we treat env==NULL as meaning 'use the default'
3316 */
3317 if (!env)
3318 env = environ;
5aabfad6 3319 if (env != environ)
79072805
LW		 3320 environ[0] = Nullch;
3321 for (; *env; env++) {
93a17b20 3322 if (!(s = strchr(*env,'=')))
79072805
LW		 3323 continue;
3324 *s++ = '\0';
60ce6247 3325#if defined(MSDOS)
137443ea 3326 (void)strupr(*env);
3327#endif
79072805
LW		 3328 sv = newSVpv(s--,0);
3329 (void)hv_store(hv, *env, s - *env, sv, 0);
3330 *s = '=';
3e3baf6d
TB		 3331#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3332 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 3333 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 3334#endif
fe14fcc3 3335 }
4550b24a 3336#endif
3337#ifdef DYNAMIC_ENV_FETCH
3338 HvNAME(hv) = savepv(ENV_HV_NAME);
3339#endif
79072805 3340 }
bbce6d69 3341 TAINT_NOT;
155aba94 3342 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3343 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3344}
34de22dd 3345
76e3520e 3346STATIC void
cea2e8a9 3347S_init_perllib(pTHX)
34de22dd 3348{
85e6fe83 3349 char *s;
3280af22 3350 if (!PL_tainting) {
552a7a9b 3351#ifndef VMS
76e3520e 3352 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3353 if (s)
9c8a64f0 3354 incpush(s, TRUE, TRUE);
85e6fe83 3355 else
9c8a64f0 3356 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3357#else /* VMS */
3358 /* Treat PERL5?LIB as a possible search list logical name -- the
3359 * "natural" VMS idiom for a Unix path string. We allow each
3360 * element to be a set of |-separated directories for compatibility.
3361 */
3362 char buf[256];
3363 int idx = 0;
3364 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3365 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3366 else
9c8a64f0 3367 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3368#endif /* VMS */
85e6fe83 3369 }
34de22dd 3370
c90c0ff4 3371/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3372 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3373*/
4633a7c4 3374#ifdef APPLLIB_EXP
9c8a64f0 3375 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3376#endif
4633a7c4 3377
fed7345c 3378#ifdef ARCHLIB_EXP
9c8a64f0 3379 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3380#endif
bf4acbe4
GS		 3381#ifdef MACOS_TRADITIONAL
3382 {
3383 struct stat tmpstatbuf;
3384 SV * privdir = NEWSV(55, 0);
3385 char * macperl = PerlEnv_getenv("MACPERL");
3386
3387 if (!macperl)
3388 macperl = "";
3389
3390 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3391 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3392 incpush(SvPVX(privdir), TRUE, FALSE);
3393 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3394 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3395 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3396
bf4acbe4
GS		 3397 SvREFCNT_dec(privdir);
3398 }
3399 if (!PL_tainting)
3400 incpush(":", FALSE, FALSE);
3401#else
fed7345c 3402#ifndef PRIVLIB_EXP
65f19062 3403# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3404#endif
ac27b0f5 3405#if defined(WIN32)
9c8a64f0 3406 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3407#else
9c8a64f0 3408 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3409#endif
4633a7c4 3410
65f19062 3411#ifdef SITEARCH_EXP
3b290362
GS		 3412 /* sitearch is always relative to sitelib on Windows for
3413 * DLL-based path intuition to work correctly */
3414# if !defined(WIN32)
9c8a64f0 3415 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3416# endif
3417#endif
3418
4633a7c4 3419#ifdef SITELIB_EXP
65f19062 3420# if defined(WIN32)
9c8a64f0 3421 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3422# else
9c8a64f0 3423 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3424# endif
3425#endif
189d1e8d 3426
65f19062 3427#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3428 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3429#endif
65f19062
GS		 3430
3431#ifdef PERL_VENDORARCH_EXP
4ea817c6 3432 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3433 * DLL-based path intuition to work correctly */
3434# if !defined(WIN32)
9c8a64f0 3435 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3436# endif
4b03c463 3437#endif
65f19062
GS		 3438
3439#ifdef PERL_VENDORLIB_EXP
3440# if defined(WIN32)
9c8a64f0 3441 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3442# else
9c8a64f0 3443 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3444# endif
a3635516 3445#endif
65f19062
GS		 3446
3447#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3448 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3449#endif
65f19062 3450
3b777bb4
GS		 3451#ifdef PERL_OTHERLIBDIRS
3452 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3453#endif
3454
3280af22 3455 if (!PL_tainting)
9c8a64f0 3456 incpush(".", FALSE, FALSE);
bf4acbe4 3457#endif /* MACOS_TRADITIONAL */
774d564b 3458}
3459
ed79a026 3460#if defined(DOSISH) || defined(EPOC)
774d564b 3461# define PERLLIB_SEP ';'
3462#else
3463# if defined(VMS)
3464# define PERLLIB_SEP '|'
3465# else
bf4acbe4
GS		 3466# if defined(MACOS_TRADITIONAL)
3467# define PERLLIB_SEP ','
3468# else
3469# define PERLLIB_SEP ':'
3470# endif
774d564b 3471# endif
3472#endif
3473#ifndef PERLLIB_MANGLE
3474# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3475#endif
774d564b 3476
76e3520e 3477STATIC void
9c8a64f0 3478S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3479{
3480 SV *subdir = Nullsv;
774d564b 3481
3b290362 3482 if (!p || !*p)
774d564b 3483 return;
3484
9c8a64f0 3485 if (addsubdirs || addoldvers) {
00db4c45 3486 subdir = sv_newmortal();
774d564b 3487 }
3488
3489 /* Break at all separators */
3490 while (p && *p) {
8c52afec 3491 SV *libdir = NEWSV(55,0);
774d564b 3492 char *s;
3493
3494 /* skip any consecutive separators */
3495 while ( *p == PERLLIB_SEP ) {
3496 /* Uncomment the next line for PATH semantics */
79cb57f6 3497 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3498 p++;
3499 }
3500
3501 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3502 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3503 (STRLEN)(s - p));
3504 p = s + 1;
3505 }
3506 else {
3507 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3508 p = Nullch; /* break out */
3509 }
bf4acbe4
GS		 3510#ifdef MACOS_TRADITIONAL
3511 if (!strchr(SvPVX(libdir), ':'))
3512 sv_insert(libdir, 0, 0, ":", 1);
3513 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3514 sv_catpv(libdir, ":");
3515#endif
774d564b 3516
3517 /*
3518 * BEFORE pushing libdir onto @INC we may first push version- and
3519 * archname-specific sub-directories.
3520 */
9c8a64f0 3521 if (addsubdirs || addoldvers) {
29d82f8d 3522#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3523 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3524 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3525 const char **incver;
3526#endif
774d564b 3527 struct stat tmpstatbuf;
aa689395 3528#ifdef VMS
3529 char *unix;
3530 STRLEN len;
774d564b 3531
2d8e6c8d 3532 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3533 len = strlen(unix);
3534 while (unix[len-1] == '/') len--; /* Cosmetic */
3535 sv_usepvn(libdir,unix,len);
3536 }
3537 else
bf49b057 3538 PerlIO_printf(Perl_error_log,
aa689395 3539 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3540 SvPV(libdir,len));
aa689395 3541#endif
9c8a64f0 3542 if (addsubdirs) {
bf4acbe4
GS		 3543#ifdef MACOS_TRADITIONAL
3544#define PERL_AV_SUFFIX_FMT ""
3545#define PERL_ARCH_FMT ":%s"
3546#else
3547#define PERL_AV_SUFFIX_FMT "/"
3548#define PERL_ARCH_FMT "/%s"
3549#endif
9c8a64f0 3550 /* .../version/archname if -d .../version/archname */
ac27b0f5 3551 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
9c8a64f0
GS		 3552 libdir,
3553 (int)PERL_REVISION, (int)PERL_VERSION,
3554 (int)PERL_SUBVERSION, ARCHNAME);
3555 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3556 S_ISDIR(tmpstatbuf.st_mode))
3557 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3558
9c8a64f0 3559 /* .../version if -d .../version */
bf4acbe4 3560 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
9c8a64f0
GS		 3561 (int)PERL_REVISION, (int)PERL_VERSION,
3562 (int)PERL_SUBVERSION);
3563 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3564 S_ISDIR(tmpstatbuf.st_mode))
3565 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3566
3567 /* .../archname if -d .../archname */
bf4acbe4 3568 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3569 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3570 S_ISDIR(tmpstatbuf.st_mode))
3571 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3572 }
9c8a64f0 3573
9c8a64f0 3574#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3575 if (addoldvers) {
9c8a64f0
GS		 3576 for (incver = incverlist; *incver; incver++) {
3577 /* .../xxx if -d .../xxx */
bf4acbe4 3578 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3579 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3580 S_ISDIR(tmpstatbuf.st_mode))
3581 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3582 }
3583 }
29d82f8d 3584#endif
774d564b 3585 }
3586
3587 /* finally push this lib directory on the end of @INC */
3280af22 3588 av_push(GvAVn(PL_incgv), libdir);
774d564b 3589 }
34de22dd 3590}
93a17b20 3591
199100c8 3592#ifdef USE_THREADS
76e3520e 3593STATIC struct perl_thread *
cea2e8a9 3594S_init_main_thread(pTHX)
199100c8 3595{
c5be433b 3596#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3597 struct perl_thread *thr;
cea2e8a9 3598#endif
199100c8
MB		 3599 XPV *xpv;
3600
52e1cb5e 3601 Newz(53, thr, 1, struct perl_thread);
533c011a 3602 PL_curcop = &PL_compiling;
c5be433b 3603 thr->interp = PERL_GET_INTERP;
199100c8 3604 thr->cvcache = newHV();
54b9620d 3605 thr->threadsv = newAV();
940cb80d 3606 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3607 thr->specific = newAV();
3608 thr->flags = THRf_R_JOINABLE;
3609 MUTEX_INIT(&thr->mutex);
3610 /* Handcraft thrsv similarly to mess_sv */
533c011a 3611 New(53, PL_thrsv, 1, SV);
199100c8 3612 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3613 SvFLAGS(PL_thrsv) = SVt_PV;
3614 SvANY(PL_thrsv) = (void*)xpv;
3615 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3616 SvPVX(PL_thrsv) = (char*)thr;
3617 SvCUR_set(PL_thrsv, sizeof(thr));
3618 SvLEN_set(PL_thrsv, sizeof(thr));
3619 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3620 thr->oursv = PL_thrsv;
3621 PL_chopset = " \n-";
3967c732 3622 PL_dumpindent = 4;
533c011a
NIS		 3623
3624 MUTEX_LOCK(&PL_threads_mutex);
3625 PL_nthreads++;
199100c8
MB		 3626 thr->tid = 0;
3627 thr->next = thr;
3628 thr->prev = thr;
8dcd6f7b 3629 thr->thr_done = 0;
533c011a 3630 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3631
4b026b9e 3632#ifdef HAVE_THREAD_INTERN
4f63d024 3633 Perl_init_thread_intern(thr);
235db74f
GS		 3634#endif
3635
3636#ifdef SET_THREAD_SELF
3637 SET_THREAD_SELF(thr);
199100c8
MB		 3638#else
3639 thr->self = pthread_self();
235db74f 3640#endif /* SET_THREAD_SELF */
06d86050 3641 PERL_SET_THX(thr);
199100c8
MB		 3642
3643 /*
411caa50
JH		 3644 * These must come after the thread self setting
3645 * because sv_setpvn does SvTAINT and the taint
3646 * fields thread selfness being set.
199100c8 3647 */
533c011a
NIS		 3648 PL_toptarget = NEWSV(0,0);
3649 sv_upgrade(PL_toptarget, SVt_PVFM);
3650 sv_setpvn(PL_toptarget, "", 0);
3651 PL_bodytarget = NEWSV(0,0);
3652 sv_upgrade(PL_bodytarget, SVt_PVFM);
3653 sv_setpvn(PL_bodytarget, "", 0);
3654 PL_formtarget = PL_bodytarget;
79cb57f6 3655 thr->errsv = newSVpvn("", 0);
78857c3c 3656 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3657
533c011a 3658 PL_maxscream = -1;
0b94c7bb
GS		 3659 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3660 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3661 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3662 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3663 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3664 PL_regindent = 0;
3665 PL_reginterp_cnt = 0;
5c0ca799 3666
199100c8
MB		 3667 return thr;
3668}
3669#endif /* USE_THREADS */
3670
93a17b20 3671void
864dbfa3 3672Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3673{
971a9dd3 3674 SV *atsv;
57843af0 3675 line_t oldline = CopLINE(PL_curcop);
312caa8e 3676 CV *cv;
22921e25 3677 STRLEN len;
6224f72b 3678 int ret;
db36c5a1 3679 dJMPENV;
93a17b20 3680
76e3520e 3681 while (AvFILL(paramList) >= 0) {
312caa8e 3682 cv = (CV*)av_shift(paramList);
059a8bb7
JH		 3683 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3684 /* save PL_beginav for compiler */
3685 if (! PL_beginav_save)
3686 PL_beginav_save = newAV();
3687 av_push(PL_beginav_save, (SV*)cv);
3688 } else {
3689 SAVEFREESV(cv);
3690 }
14dd3ad8
GS		 3691#ifdef PERL_FLEXIBLE_EXCEPTIONS
3692 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3693#else
3694 JMPENV_PUSH(ret);
3695#endif
6224f72b 3696 switch (ret) {
312caa8e 3697 case 0:
14dd3ad8
GS		 3698#ifndef PERL_FLEXIBLE_EXCEPTIONS
3699 call_list_body(cv);
3700#endif
971a9dd3 3701 atsv = ERRSV;
312caa8e
CS		 3702 (void)SvPV(atsv, len);
3703 if (len) {
971a9dd3 3704 STRLEN n_a;
312caa8e 3705 PL_curcop = &PL_compiling;
57843af0 3706 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3707 if (paramList == PL_beginav)
3708 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3709 else
4f25aa18
GS		 3710 Perl_sv_catpvf(aTHX_ atsv,
3711 "%s failed--call queue aborted",
7d30b5c4 3712 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3713 : paramList == PL_initav ? "INIT"
3714 : "END");
312caa8e
CS		 3715 while (PL_scopestack_ix > oldscope)
3716 LEAVE;
14dd3ad8 3717 JMPENV_POP;
971a9dd3 3718 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3719 }
85e6fe83 3720 break;
6224f72b 3721 case 1:
f86702cc 3722 STATUS_ALL_FAILURE;
85e6fe83 3723 /* FALL THROUGH */
6224f72b 3724 case 2:
85e6fe83 3725 /* my_exit() was called */
3280af22 3726 while (PL_scopestack_ix > oldscope)
2ae324a7 3727 LEAVE;
84902520 3728 FREETMPS;
3280af22 3729 PL_curstash = PL_defstash;
3280af22 3730 PL_curcop = &PL_compiling;
57843af0 3731 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3732 JMPENV_POP;
cc3604b1 3733 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3734 if (paramList == PL_beginav)
cea2e8a9 3735 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3736 else
4f25aa18 3737 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3738 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3739 : paramList == PL_initav ? "INIT"
3740 : "END");
85e6fe83 3741 }
f86702cc 3742 my_exit_jump();
85e6fe83 3743 /* NOTREACHED */
6224f72b 3744 case 3:
312caa8e
CS		 3745 if (PL_restartop) {
3746 PL_curcop = &PL_compiling;
57843af0 3747 CopLINE_set(PL_curcop, oldline);
312caa8e 3748 JMPENV_JUMP(3);
85e6fe83 3749 }
bf49b057 3750 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3751 FREETMPS;
3752 break;
8990e307 3753 }
14dd3ad8 3754 JMPENV_POP;
93a17b20 3755 }
93a17b20 3756}
93a17b20 3757
14dd3ad8 3758#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3759STATIC void *
14dd3ad8 3760S_vcall_list_body(pTHX_ va_list args)
312caa8e 3761{
312caa8e 3762 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3763 return call_list_body(cv);
3764}
3765#endif
312caa8e 3766
14dd3ad8
GS		 3767STATIC void *
3768S_call_list_body(pTHX_ CV *cv)
3769{
312caa8e 3770 PUSHMARK(PL_stack_sp);
864dbfa3 3771 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3772 return NULL;
3773}
3774
f86702cc 3775void
864dbfa3 3776Perl_my_exit(pTHX_ U32 status)
f86702cc 3777{
8b73bbec 3778 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3779 thr, (unsigned long) status));
f86702cc 3780 switch (status) {
3781 case 0:
3782 STATUS_ALL_SUCCESS;
3783 break;
3784 case 1:
3785 STATUS_ALL_FAILURE;
3786 break;
3787 default:
3788 STATUS_NATIVE_SET(status);
3789 break;
3790 }
3791 my_exit_jump();
3792}
3793
3794void
864dbfa3 3795Perl_my_failure_exit(pTHX)
f86702cc 3796{
3797#ifdef VMS
3798 if (vaxc$errno & 1) {
4fdae800 3799 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3800 STATUS_NATIVE_SET(44);
f86702cc 3801 }
3802 else {
ff0cee69 3803 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3804 STATUS_NATIVE_SET(44);
f86702cc 3805 else
4fdae800 3806 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3807 }
3808#else
9b599b2a 3809 int exitstatus;
f86702cc 3810 if (errno & 255)
3811 STATUS_POSIX_SET(errno);
9b599b2a 3812 else {
ac27b0f5 3813 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3814 if (exitstatus & 255)
3815 STATUS_POSIX_SET(exitstatus);
3816 else
3817 STATUS_POSIX_SET(255);
3818 }
f86702cc 3819#endif
3820 my_exit_jump();
93a17b20
LW		 3821}
3822
76e3520e 3823STATIC void
cea2e8a9 3824S_my_exit_jump(pTHX)
f86702cc 3825{
c09156bb 3826 register PERL_CONTEXT *cx;
f86702cc 3827 I32 gimme;
3828 SV **newsp;
3829
3280af22
NIS		 3830 if (PL_e_script) {
3831 SvREFCNT_dec(PL_e_script);
3832 PL_e_script = Nullsv;
f86702cc 3833 }
3834
3280af22 3835 POPSTACK_TO(PL_mainstack);
f86702cc 3836 if (cxstack_ix >= 0) {
3837 if (cxstack_ix > 0)
3838 dounwind(0);
3280af22 3839 POPBLOCK(cx,PL_curpm);
f86702cc 3840 LEAVE;
3841 }
ff0cee69 3842
6224f72b 3843 JMPENV_JUMP(2);
f86702cc 3844}
873ef191 3845
7a5f8e82 3846#ifdef PERL_OBJECT
873ef191 3847#include "XSUB.h"
51371543 3848#endif
873ef191 3849
0cb96387
GS		 3850static I32
3851read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3852{
3853 char *p, *nl;
3280af22 3854 p = SvPVX(PL_e_script);
873ef191 3855 nl = strchr(p, '\n');
3280af22 3856 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3857 if (nl-p == 0) {
0cb96387 3858 filter_del(read_e_script);
873ef191 3859 return 0;
7dfe3f66 3860 }
873ef191 3861 sv_catpvn(buf_sv, p, nl-p);
3280af22 3862 sv_chop(PL_e_script, nl);
873ef191
GS		 3863 return 1;
3864}
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