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Re: Why t/TEST and not Test::Harness?
[perl5.git] / perl.c
CommitLineData
a0d0e21e
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1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
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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
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8 */
9
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10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
26#endif
27
0cb96387
GS
28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW
36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS
43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS
50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS
67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS
73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS
85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS
87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS
94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS
102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS
104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS
106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS
112#endif
113
32e30700
GS
114 return my_perl;
115}
116#else
954c1994
GS
117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS
140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1
MB
151#ifdef USE_THREADS
152 int i;
153#ifndef FAKE_THREADS
e1f15930 154 struct perl_thread *thr = NULL;
a863c7d1
MB
155#endif /* FAKE_THREADS */
156#endif /* USE_THREADS */
ba869deb 157
8990e307 158#ifdef MULTIPLICITY
54aff467 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
PP
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
PP
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
PP
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
PP
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
PP
441 /* loosen bonds of global variables */
442
3280af22
NIS
443 if(PL_rsfp) {
444 (void)PerlIO_close(PL_rsfp);
445 PL_rsfp = Nullfp;
8ebc5c01
PP
446 }
447
448 /* Filters for program text */
3280af22
NIS
449 SvREFCNT_dec(PL_rsfp_filters);
450 PL_rsfp_filters = Nullav;
8ebc5c01
PP
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
PP
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
PP
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
PP
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;
eff180cd 565 SvREFCNT_dec(PL_numeric_radix);
b9582b6a 566#endif
d33b2eba 567
5c831c24
GS
568 /* clear utf8 character classes */
569 SvREFCNT_dec(PL_utf8_alnum);
570 SvREFCNT_dec(PL_utf8_alnumc);
571 SvREFCNT_dec(PL_utf8_ascii);
572 SvREFCNT_dec(PL_utf8_alpha);
573 SvREFCNT_dec(PL_utf8_space);
574 SvREFCNT_dec(PL_utf8_cntrl);
575 SvREFCNT_dec(PL_utf8_graph);
576 SvREFCNT_dec(PL_utf8_digit);
577 SvREFCNT_dec(PL_utf8_upper);
578 SvREFCNT_dec(PL_utf8_lower);
579 SvREFCNT_dec(PL_utf8_print);
580 SvREFCNT_dec(PL_utf8_punct);
581 SvREFCNT_dec(PL_utf8_xdigit);
582 SvREFCNT_dec(PL_utf8_mark);
583 SvREFCNT_dec(PL_utf8_toupper);
584 SvREFCNT_dec(PL_utf8_tolower);
585 PL_utf8_alnum = Nullsv;
586 PL_utf8_alnumc = Nullsv;
587 PL_utf8_ascii = Nullsv;
588 PL_utf8_alpha = Nullsv;
589 PL_utf8_space = Nullsv;
590 PL_utf8_cntrl = Nullsv;
591 PL_utf8_graph = Nullsv;
592 PL_utf8_digit = Nullsv;
593 PL_utf8_upper = Nullsv;
594 PL_utf8_lower = Nullsv;
595 PL_utf8_print = Nullsv;
596 PL_utf8_punct = Nullsv;
597 PL_utf8_xdigit = Nullsv;
598 PL_utf8_mark = Nullsv;
599 PL_utf8_toupper = Nullsv;
600 PL_utf8_totitle = Nullsv;
601 PL_utf8_tolower = Nullsv;
602
971a9dd3
GS
603 if (!specialWARN(PL_compiling.cop_warnings))
604 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 605 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
606 if (!specialCopIO(PL_compiling.cop_io))
607 SvREFCNT_dec(PL_compiling.cop_io);
608 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
609#ifdef USE_ITHREADS
610 Safefree(CopFILE(&PL_compiling));
611 CopFILE(&PL_compiling) = Nullch;
612 Safefree(CopSTASHPV(&PL_compiling));
613#else
01724ea0 614 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
615 CopFILEGV(&PL_compiling) = Nullgv;
616 /* cop_stash is not refcounted */
01724ea0 617#endif
5c831c24 618
a0d0e21e 619 /* Prepare to destruct main symbol table. */
5f05dabc 620
3280af22
NIS
621 hv = PL_defstash;
622 PL_defstash = 0;
a0d0e21e 623 SvREFCNT_dec(hv);
5c831c24
GS
624 SvREFCNT_dec(PL_curstname);
625 PL_curstname = Nullsv;
a0d0e21e 626
5a844595
GS
627 /* clear queued errors */
628 SvREFCNT_dec(PL_errors);
629 PL_errors = Nullsv;
630
a0d0e21e 631 FREETMPS;
0453d815 632 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 633 if (PL_scopestack_ix != 0)
0453d815
PM
634 Perl_warner(aTHX_ WARN_INTERNAL,
635 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
636 (long)PL_scopestack_ix);
637 if (PL_savestack_ix != 0)
0453d815
PM
638 Perl_warner(aTHX_ WARN_INTERNAL,
639 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
640 (long)PL_savestack_ix);
641 if (PL_tmps_floor != -1)
0453d815 642 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 643 (long)PL_tmps_floor + 1);
a0d0e21e 644 if (cxstack_ix != -1)
0453d815 645 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 646 (long)cxstack_ix + 1);
a0d0e21e 647 }
8990e307
LW
648
649 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 650 last_sv_count = 0;
d33b2eba 651 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS
652 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
653 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
654 last_sv_count = PL_sv_count;
8990e307
LW
655 sv_clean_all();
656 }
d33b2eba
GS
657 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
658 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
659 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
660 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 661
d4777f27
GS
662 AvREAL_off(PL_fdpid); /* no surviving entries */
663 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
664 PL_fdpid = Nullav;
665
6c644e78
GS
666#ifdef HAVE_INTERP_INTERN
667 sys_intern_clear();
668#endif
669
6e72f9df
PP
670 /* Destruct the global string table. */
671 {
672 /* Yell and reset the HeVAL() slots that are still holding refcounts,
673 * so that sv_free() won't fail on them.
674 */
675 I32 riter;
676 I32 max;
677 HE *hent;
678 HE **array;
679
680 riter = 0;
3280af22
NIS
681 max = HvMAX(PL_strtab);
682 array = HvARRAY(PL_strtab);
6e72f9df
PP
683 hent = array[0];
684 for (;;) {
0453d815
PM
685 if (hent && ckWARN_d(WARN_INTERNAL)) {
686 Perl_warner(aTHX_ WARN_INTERNAL,
687 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
688 HeVAL(hent) - Nullsv, HeKEY(hent));
689 HeVAL(hent) = Nullsv;
690 hent = HeNEXT(hent);
691 }
692 if (!hent) {
693 if (++riter > max)
694 break;
695 hent = array[riter];
696 }
697 }
698 }
3280af22 699 SvREFCNT_dec(PL_strtab);
6e72f9df 700
e652bb2f 701#ifdef USE_ITHREADS
a0739874
DM
702 /* free the pointer table used for cloning */
703 ptr_table_free(PL_ptr_table);
53186e96 704#endif
a0739874 705
d33b2eba
GS
706 /* free special SVs */
707
708 SvREFCNT(&PL_sv_yes) = 0;
709 sv_clear(&PL_sv_yes);
710 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 711 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
712
713 SvREFCNT(&PL_sv_no) = 0;
714 sv_clear(&PL_sv_no);
715 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 716 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
717
718 SvREFCNT(&PL_sv_undef) = 0;
719 SvREADONLY_off(&PL_sv_undef);
d33b2eba 720
0453d815
PM
721 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
722 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 723
3280af22 724 Safefree(PL_origfilename);
3280af22 725 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
726 if (PL_reg_curpm)
727 Safefree(PL_reg_curpm);
82ba1be6 728 Safefree(PL_reg_poscache);
3280af22
NIS
729 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
730 Safefree(PL_op_mask);
cf36064f
GS
731 Safefree(PL_psig_ptr);
732 Safefree(PL_psig_name);
ce08f86c 733 Safefree(PL_psig_pend);
6e72f9df 734 nuke_stacks();
3280af22 735 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 736
a0d0e21e 737 DEBUG_P(debprofdump());
11343788 738#ifdef USE_THREADS
5f08fbcd 739 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
740 MUTEX_DESTROY(&PL_sv_mutex);
741 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 742 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 743 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 744 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
745#ifdef EMULATE_ATOMIC_REFCOUNTS
746 MUTEX_DESTROY(&PL_svref_mutex);
747#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 748
8023c3ce 749 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
750 Safefree(SvPVX(PL_thrsv));
751 Safefree(SvANY(PL_thrsv));
752 Safefree(PL_thrsv);
753 PL_thrsv = Nullsv;
8023c3ce 754#endif /* USE_THREADS */
d33b2eba 755
612f20c3
GS
756 sv_free_arenas();
757
fc36a67e
PP
758 /* As the absolutely last thing, free the non-arena SV for mess() */
759
3280af22 760 if (PL_mess_sv) {
9c63abab
GS
761 /* it could have accumulated taint magic */
762 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
763 MAGIC* mg;
764 MAGIC* moremagic;
765 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
766 moremagic = mg->mg_moremagic;
767 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
768 Safefree(mg->mg_ptr);
769 Safefree(mg);
770 }
771 }
fc36a67e 772 /* we know that type >= SVt_PV */
155aba94 773 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
774 Safefree(SvPVX(PL_mess_sv));
775 Safefree(SvANY(PL_mess_sv));
776 Safefree(PL_mess_sv);
777 PL_mess_sv = Nullsv;
fc36a67e 778 }
79072805
LW
779}
780
954c1994
GS
781/*
782=for apidoc perl_free
783
784Releases a Perl interpreter. See L<perlembed>.
785
786=cut
787*/
788
79072805 789void
0cb96387 790perl_free(pTHXx)
79072805 791{
c5be433b 792#if defined(PERL_OBJECT)
7f0d82f7 793 PerlMem_free(this);
76e3520e 794#else
ce3e5b80
NIS
795# if defined(WIN32)
796# if defined(PERL_IMPLICIT_SYS)
1c0ca838 797 void *host = w32_internal_host;
ba247512 798 if (PerlProc_lasthost()) {
ce08f86c 799 PerlIO_cleanup();
ba247512 800 }
7f0d82f7 801 PerlMem_free(aTHXx);
1c0ca838 802 win32_delete_internal_host(host);
ce3e5b80 803#else
ce08f86c 804 PerlIO_cleanup();
ce3e5b80
NIS
805 PerlMem_free(aTHXx);
806#endif
1c0ca838
GS
807# else
808 PerlMem_free(aTHXx);
809# endif
76e3520e 810#endif
79072805
LW
811}
812
4b556e6c 813void
864dbfa3 814Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 815{
3280af22
NIS
816 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
817 PL_exitlist[PL_exitlistlen].fn = fn;
818 PL_exitlist[PL_exitlistlen].ptr = ptr;
819 ++PL_exitlistlen;
4b556e6c
JD
820}
821
954c1994
GS
822/*
823=for apidoc perl_parse
824
825Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
826
827=cut
828*/
829
79072805 830int
0cb96387 831perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 832{
6224f72b 833 I32 oldscope;
6224f72b 834 int ret;
db36c5a1 835 dJMPENV;
cea2e8a9
GS
836#ifdef USE_THREADS
837 dTHX;
838#endif
8d063cd8 839
a687059c
LW
840#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
841#ifdef IAMSUID
842#undef IAMSUID
cea2e8a9 843 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
844setuid perl scripts securely.\n");
845#endif
846#endif
847
8f1f23e8 848#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
849 _dyld_lookup_and_bind
850 ("__environ", (unsigned long *) &environ_pointer, NULL);
851#endif /* environ */
852
3280af22
NIS
853 PL_origargv = argv;
854 PL_origargc = argc;
fa6a1c44 855#ifdef USE_ENVIRON_ARRAY
3280af22 856 PL_origenviron = environ;
a0d0e21e
LW
857#endif
858
3280af22 859 if (PL_do_undump) {
a0d0e21e
LW
860
861 /* Come here if running an undumped a.out. */
862
3280af22
NIS
863 PL_origfilename = savepv(argv[0]);
864 PL_do_undump = FALSE;
a0d0e21e 865 cxstack_ix = -1; /* start label stack again */
748a9306 866 init_ids();
a0d0e21e
LW
867 init_postdump_symbols(argc,argv,env);
868 return 0;
869 }
870
3280af22
NIS
871 if (PL_main_root) {
872 PL_curpad = AvARRAY(PL_comppad);
873 op_free(PL_main_root);
874 PL_main_root = Nullop;
ff0cee69 875 }
3280af22
NIS
876 PL_main_start = Nullop;
877 SvREFCNT_dec(PL_main_cv);
878 PL_main_cv = Nullcv;
79072805 879
3280af22
NIS
880 time(&PL_basetime);
881 oldscope = PL_scopestack_ix;
599cee73 882 PL_dowarn = G_WARN_OFF;
f86702cc 883
14dd3ad8
GS
884#ifdef PERL_FLEXIBLE_EXCEPTIONS
885 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
886#else
887 JMPENV_PUSH(ret);
888#endif
6224f72b 889 switch (ret) {
312caa8e 890 case 0:
14dd3ad8
GS
891#ifndef PERL_FLEXIBLE_EXCEPTIONS
892 parse_body(env,xsinit);
893#endif
7d30b5c4
GS
894 if (PL_checkav)
895 call_list(oldscope, PL_checkav);
14dd3ad8
GS
896 ret = 0;
897 break;
6224f72b
GS
898 case 1:
899 STATUS_ALL_FAILURE;
900 /* FALL THROUGH */
901 case 2:
902 /* my_exit() was called */
3280af22 903 while (PL_scopestack_ix > oldscope)
6224f72b
GS
904 LEAVE;
905 FREETMPS;
3280af22 906 PL_curstash = PL_defstash;
7d30b5c4
GS
907 if (PL_checkav)
908 call_list(oldscope, PL_checkav);
14dd3ad8
GS
909 ret = STATUS_NATIVE_EXPORT;
910 break;
6224f72b 911 case 3:
bf49b057 912 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
913 ret = 1;
914 break;
6224f72b 915 }
14dd3ad8
GS
916 JMPENV_POP;
917 return ret;
918}
919
920#ifdef PERL_FLEXIBLE_EXCEPTIONS
921STATIC void *
922S_vparse_body(pTHX_ va_list args)
923{
924 char **env = va_arg(args, char**);
925 XSINIT_t xsinit = va_arg(args, XSINIT_t);
926
927 return parse_body(env, xsinit);
312caa8e 928}
14dd3ad8 929#endif
312caa8e
CS
930
931STATIC void *
14dd3ad8 932S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 933{
312caa8e
CS
934 int argc = PL_origargc;
935 char **argv = PL_origargv;
312caa8e
CS
936 char *scriptname = NULL;
937 int fdscript = -1;
938 VOL bool dosearch = FALSE;
939 char *validarg = "";
940 AV* comppadlist;
941 register SV *sv;
942 register char *s;
f4c556ac 943 char *cddir = Nullch;
312caa8e 944
3280af22 945 sv_setpvn(PL_linestr,"",0);
79cb57f6 946 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
947 SAVEFREESV(sv);
948 init_main_stash();
54310121 949
6224f72b
GS
950 for (argc--,argv++; argc > 0; argc--,argv++) {
951 if (argv[0][0] != '-' || !argv[0][1])
952 break;
953#ifdef DOSUID
954 if (*validarg)
955 validarg = " PHOOEY ";
956 else
957 validarg = argv[0];
13281fa4 958#endif
6224f72b
GS
959 s = argv[0]+1;
960 reswitch:
961 switch (*s) {
729a02f2
GS
962 case 'C':
963#ifdef WIN32
c0932edc 964 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
965 /* FALL THROUGH */
966#endif
1d5472a9
GS
967#ifndef PERL_STRICT_CR
968 case '\r':
969#endif
6224f72b
GS
970 case ' ':
971 case '0':
972 case 'F':
973 case 'a':
974 case 'c':
975 case 'd':
976 case 'D':
977 case 'h':
978 case 'i':
979 case 'l':
980 case 'M':
981 case 'm':
982 case 'n':
983 case 'p':
984 case 's':
985 case 'u':
986 case 'U':
987 case 'v':
599cee73
PM
988 case 'W':
989 case 'X':
6224f72b 990 case 'w':
155aba94 991 if ((s = moreswitches(s)))
6224f72b
GS
992 goto reswitch;
993 break;
33b78306 994
6224f72b 995 case 'T':
3280af22 996 PL_tainting = TRUE;
6224f72b
GS
997 s++;
998 goto reswitch;
f86702cc 999
6224f72b 1000 case 'e':
bf4acbe4
GS
1001#ifdef MACOS_TRADITIONAL
1002 /* ignore -e for Dev:Pseudo argument */
1003 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1004 break;
bf4acbe4 1005#endif
3280af22 1006 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1007 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1008 if (!PL_e_script) {
79cb57f6 1009 PL_e_script = newSVpvn("",0);
0cb96387 1010 filter_add(read_e_script, NULL);
6224f72b
GS
1011 }
1012 if (*++s)
3280af22 1013 sv_catpv(PL_e_script, s);
6224f72b 1014 else if (argv[1]) {
3280af22 1015 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1016 argc--,argv++;
1017 }
1018 else
cea2e8a9 1019 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1020 sv_catpv(PL_e_script, "\n");
6224f72b 1021 break;
afe37c7d 1022
6224f72b
GS
1023 case 'I': /* -I handled both here and in moreswitches() */
1024 forbid_setid("-I");
1025 if (!*++s && (s=argv[1]) != Nullch) {
1026 argc--,argv++;
1027 }
6224f72b 1028 if (s && *s) {
0df16ed7
GS
1029 char *p;
1030 STRLEN len = strlen(s);
1031 p = savepvn(s, len);
9c8a64f0 1032 incpush(p, TRUE, TRUE);
0df16ed7
GS
1033 sv_catpvn(sv, "-I", 2);
1034 sv_catpvn(sv, p, len);
1035 sv_catpvn(sv, " ", 1);
6224f72b 1036 Safefree(p);
0df16ed7
GS
1037 }
1038 else
a67e862a 1039 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1040 break;
1041 case 'P':
1042 forbid_setid("-P");
3280af22 1043 PL_preprocess = TRUE;
6224f72b
GS
1044 s++;
1045 goto reswitch;
1046 case 'S':
1047 forbid_setid("-S");
1048 dosearch = TRUE;
1049 s++;
1050 goto reswitch;
1051 case 'V':
3280af22
NIS
1052 if (!PL_preambleav)
1053 PL_preambleav = newAV();
1054 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1055 if (*++s != ':') {
3280af22 1056 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1057#ifdef VMS
6b88bc9c 1058 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1059#else
3280af22 1060 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1061#endif
3280af22 1062 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1063# ifdef DEBUGGING
3280af22 1064 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1065# endif
6224f72b 1066# ifdef MULTIPLICITY
8f872242 1067 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1068# endif
b363f7ed
GS
1069# ifdef USE_THREADS
1070 sv_catpv(PL_Sv," USE_THREADS");
1071# endif
ac5e8965
JH
1072# ifdef USE_ITHREADS
1073 sv_catpv(PL_Sv," USE_ITHREADS");
1074# endif
10cc9d2a
JH
1075# ifdef USE_64_BIT_INT
1076 sv_catpv(PL_Sv," USE_64_BIT_INT");
1077# endif
1078# ifdef USE_64_BIT_ALL
1079 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1080# endif
1081# ifdef USE_LONG_DOUBLE
1082 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1083# endif
53430762
JH
1084# ifdef USE_LARGE_FILES
1085 sv_catpv(PL_Sv," USE_LARGE_FILES");
1086# endif
ac5e8965
JH
1087# ifdef USE_SOCKS
1088 sv_catpv(PL_Sv," USE_SOCKS");
1089# endif
b363f7ed
GS
1090# ifdef PERL_OBJECT
1091 sv_catpv(PL_Sv," PERL_OBJECT");
1092# endif
1093# ifdef PERL_IMPLICIT_CONTEXT
1094 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1095# endif
1096# ifdef PERL_IMPLICIT_SYS
1097 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1098# endif
3280af22 1099 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1100
6224f72b
GS
1101#if defined(LOCAL_PATCH_COUNT)
1102 if (LOCAL_PATCH_COUNT > 0) {
1103 int i;
3280af22 1104 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1105 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1106 if (PL_localpatches[i])
cea2e8a9 1107 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1108 }
1109 }
1110#endif
cea2e8a9 1111 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1112#ifdef __DATE__
1113# ifdef __TIME__
cea2e8a9 1114 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1115# else
cea2e8a9 1116 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1117# endif
1118#endif
3280af22 1119 sv_catpv(PL_Sv, "; \
6224f72b
GS
1120$\"=\"\\n \"; \
1121@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1122print \" \\%ENV:\\n @env\\n\" if @env; \
1123print \" \\@INC:\\n @INC\\n\";");
1124 }
1125 else {
3280af22
NIS
1126 PL_Sv = newSVpv("config_vars(qw(",0);
1127 sv_catpv(PL_Sv, ++s);
1128 sv_catpv(PL_Sv, "))");
6224f72b
GS
1129 s += strlen(s);
1130 }
3280af22 1131 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1132 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1133 goto reswitch;
1134 case 'x':
3280af22 1135 PL_doextract = TRUE;
6224f72b
GS
1136 s++;
1137 if (*s)
f4c556ac 1138 cddir = s;
6224f72b
GS
1139 break;
1140 case 0:
1141 break;
1142 case '-':
1143 if (!*++s || isSPACE(*s)) {
1144 argc--,argv++;
1145 goto switch_end;
1146 }
1147 /* catch use of gnu style long options */
1148 if (strEQ(s, "version")) {
1149 s = "v";
1150 goto reswitch;
1151 }
1152 if (strEQ(s, "help")) {
1153 s = "h";
1154 goto reswitch;
1155 }
1156 s--;
1157 /* FALL THROUGH */
1158 default:
cea2e8a9 1159 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1160 }
1161 }
6224f72b 1162 switch_end:
54310121 1163
f675dbe5
CB
1164 if (
1165#ifndef SECURE_INTERNAL_GETENV
1166 !PL_tainting &&
1167#endif
0df16ed7
GS
1168 (s = PerlEnv_getenv("PERL5OPT")))
1169 {
74288ac8
GS
1170 while (isSPACE(*s))
1171 s++;
1172 if (*s == '-' && *(s+1) == 'T')
1173 PL_tainting = TRUE;
1174 else {
1175 while (s && *s) {
1176 while (isSPACE(*s))
1177 s++;
1178 if (*s == '-') {
1179 s++;
1180 if (isSPACE(*s))
1181 continue;
1182 }
1183 if (!*s)
1184 break;
1185 if (!strchr("DIMUdmw", *s))
cea2e8a9 1186 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 1187 s = moreswitches(s);
6224f72b 1188 }
6224f72b
GS
1189 }
1190 }
a0d0e21e 1191
6224f72b
GS
1192 if (!scriptname)
1193 scriptname = argv[0];
3280af22 1194 if (PL_e_script) {
6224f72b
GS
1195 argc++,argv--;
1196 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1197 }
1198 else if (scriptname == Nullch) {
1199#ifdef MSDOS
1200 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1201 moreswitches("h");
1202#endif
1203 scriptname = "-";
1204 }
1205
1206 init_perllib();
1207
1208 open_script(scriptname,dosearch,sv,&fdscript);
1209
1210 validate_suid(validarg, scriptname,fdscript);
1211
64ca3a65 1212#ifndef PERL_MICRO
0b5b802d
GS
1213#if defined(SIGCHLD) || defined(SIGCLD)
1214 {
1215#ifndef SIGCHLD
1216# define SIGCHLD SIGCLD
1217#endif
1218 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1219 if (sigstate == SIG_IGN) {
1220 if (ckWARN(WARN_SIGNAL))
1221 Perl_warner(aTHX_ WARN_SIGNAL,
1222 "Can't ignore signal CHLD, forcing to default");
1223 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1224 }
1225 }
1226#endif
64ca3a65 1227#endif
0b5b802d 1228
bf4acbe4
GS
1229#ifdef MACOS_TRADITIONAL
1230 if (PL_doextract || gMacPerl_AlwaysExtract) {
1231#else
f4c556ac 1232 if (PL_doextract) {
bf4acbe4 1233#endif
6224f72b 1234 find_beginning();
f4c556ac
GS
1235 if (cddir && PerlDir_chdir(cddir) < 0)
1236 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1237
1238 }
6224f72b 1239
3280af22
NIS
1240 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1241 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1242 CvUNIQUE_on(PL_compcv);
1243
1244 PL_comppad = newAV();
1245 av_push(PL_comppad, Nullsv);
1246 PL_curpad = AvARRAY(PL_comppad);
1247 PL_comppad_name = newAV();
1248 PL_comppad_name_fill = 0;
1249 PL_min_intro_pending = 0;
1250 PL_padix = 0;
6224f72b 1251#ifdef USE_THREADS
79cb57f6 1252 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1253 PL_curpad[0] = (SV*)newAV();
1254 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1255 CvOWNER(PL_compcv) = 0;
1256 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1257 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1258#endif /* USE_THREADS */
1259
1260 comppadlist = newAV();
1261 AvREAL_off(comppadlist);
3280af22
NIS
1262 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1263 av_store(comppadlist, 1, (SV*)PL_comppad);
1264 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS
1265
1266 boot_core_UNIVERSAL();
9a34ef1d 1267#ifndef PERL_MICRO
09bef843 1268 boot_core_xsutils();
9a34ef1d 1269#endif
6224f72b
GS
1270
1271 if (xsinit)
0cb96387 1272 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1273#ifndef PERL_MICRO
ed79a026 1274#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1275 init_os_extras();
6224f72b 1276#endif
64ca3a65 1277#endif
6224f72b 1278
29209bc5 1279#ifdef USE_SOCKS
1b9c9cf5
DH
1280# ifdef HAS_SOCKS5_INIT
1281 socks5_init(argv[0]);
1282# else
29209bc5 1283 SOCKSinit(argv[0]);
1b9c9cf5 1284# endif
ac27b0f5 1285#endif
29209bc5 1286
6224f72b
GS
1287 init_predump_symbols();
1288 /* init_postdump_symbols not currently designed to be called */
1289 /* more than once (ENV isn't cleared first, for example) */
1290 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1291 if (!PL_do_undump)
6224f72b
GS
1292 init_postdump_symbols(argc,argv,env);
1293
1294 init_lexer();
1295
1296 /* now parse the script */
1297
1298 SETERRNO(0,SS$_NORMAL);
3280af22 1299 PL_error_count = 0;
bf4acbe4
GS
1300#ifdef MACOS_TRADITIONAL
1301 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1302 if (PL_minus_c)
1303 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1304 else {
1305 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1306 MacPerl_MPWFileName(PL_origfilename));
1307 }
1308 }
1309#else
3280af22
NIS
1310 if (yyparse() || PL_error_count) {
1311 if (PL_minus_c)
cea2e8a9 1312 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1313 else {
cea2e8a9 1314 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1315 PL_origfilename);
6224f72b
GS
1316 }
1317 }
bf4acbe4 1318#endif
57843af0 1319 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1320 PL_curstash = PL_defstash;
1321 PL_preprocess = FALSE;
1322 if (PL_e_script) {
1323 SvREFCNT_dec(PL_e_script);
1324 PL_e_script = Nullsv;
6224f72b
GS
1325 }
1326
1327 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1328 SvREFCNT_dec(PL_rs);
1329 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1330 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1331 if (PL_do_undump)
6224f72b
GS
1332 my_unexec();
1333
57843af0
GS
1334 if (isWARN_ONCE) {
1335 SAVECOPFILE(PL_curcop);
1336 SAVECOPLINE(PL_curcop);
3280af22 1337 gv_check(PL_defstash);
57843af0 1338 }
6224f72b
GS
1339
1340 LEAVE;
1341 FREETMPS;
1342
1343#ifdef MYMALLOC
1344 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1345 dump_mstats("after compilation:");
1346#endif
1347
1348 ENTER;
3280af22 1349 PL_restartop = 0;
312caa8e 1350 return NULL;
6224f72b
GS
1351}
1352
954c1994
GS
1353/*
1354=for apidoc perl_run
1355
1356Tells a Perl interpreter to run. See L<perlembed>.
1357
1358=cut
1359*/
1360
6224f72b 1361int
0cb96387 1362perl_run(pTHXx)
6224f72b 1363{
6224f72b 1364 I32 oldscope;
14dd3ad8 1365 int ret = 0;
db36c5a1 1366 dJMPENV;
cea2e8a9
GS
1367#ifdef USE_THREADS
1368 dTHX;
1369#endif
6224f72b 1370
3280af22 1371 oldscope = PL_scopestack_ix;
6224f72b 1372
14dd3ad8 1373#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1374 redo_body:
14dd3ad8
GS
1375 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1376#else
1377 JMPENV_PUSH(ret);
1378#endif
6224f72b
GS
1379 switch (ret) {
1380 case 1:
1381 cxstack_ix = -1; /* start context stack again */
312caa8e 1382 goto redo_body;
14dd3ad8
GS
1383 case 0: /* normal completion */
1384#ifndef PERL_FLEXIBLE_EXCEPTIONS
1385 redo_body:
1386 run_body(oldscope);
1387#endif
1388 /* FALL THROUGH */
1389 case 2: /* my_exit() */
3280af22 1390 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1391 LEAVE;
1392 FREETMPS;
3280af22 1393 PL_curstash = PL_defstash;
865be832 1394 if (PL_endav && !PL_minus_c)
3280af22 1395 call_list(oldscope, PL_endav);
6224f72b
GS
1396#ifdef MYMALLOC
1397 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1398 dump_mstats("after execution: ");
1399#endif
14dd3ad8
GS
1400 ret = STATUS_NATIVE_EXPORT;
1401 break;
6224f72b 1402 case 3:
312caa8e
CS
1403 if (PL_restartop) {
1404 POPSTACK_TO(PL_mainstack);
1405 goto redo_body;
6224f72b 1406 }
bf49b057 1407 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1408 FREETMPS;
14dd3ad8
GS
1409 ret = 1;
1410 break;
6224f72b
GS
1411 }
1412
14dd3ad8
GS
1413 JMPENV_POP;
1414 return ret;
312caa8e
CS
1415}
1416
14dd3ad8 1417#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1418STATIC void *
14dd3ad8 1419S_vrun_body(pTHX_ va_list args)
312caa8e 1420{
312caa8e
CS
1421 I32 oldscope = va_arg(args, I32);
1422
14dd3ad8
GS
1423 return run_body(oldscope);
1424}
1425#endif
1426
1427
1428STATIC void *
1429S_run_body(pTHX_ I32 oldscope)
1430{
6224f72b 1431 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1432 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1433
3280af22 1434 if (!PL_restartop) {
6224f72b
GS
1435 DEBUG_x(dump_all());
1436 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1437 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1438 PTR2UV(thr)));
6224f72b 1439
3280af22 1440 if (PL_minus_c) {
bf4acbe4
GS
1441#ifdef MACOS_TRADITIONAL
1442 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1443#else
bf49b057 1444 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1445#endif
6224f72b
GS
1446 my_exit(0);
1447 }
3280af22 1448 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1449 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1450 if (PL_initav)
1451 call_list(oldscope, PL_initav);
6224f72b
GS
1452 }
1453
1454 /* do it */
1455
3280af22 1456 if (PL_restartop) {
533c011a 1457 PL_op = PL_restartop;
3280af22 1458 PL_restartop = 0;
cea2e8a9 1459 CALLRUNOPS(aTHX);
6224f72b 1460 }
3280af22
NIS
1461 else if (PL_main_start) {
1462 CvDEPTH(PL_main_cv) = 1;
533c011a 1463 PL_op = PL_main_start;
cea2e8a9 1464 CALLRUNOPS(aTHX);
6224f72b
GS
1465 }
1466
f6b3007c
JH
1467 my_exit(0);
1468 /* NOTREACHED */
312caa8e 1469 return NULL;
6224f72b
GS
1470}
1471
954c1994
GS
1472/*
1473=for apidoc p||get_sv
1474
1475Returns the SV of the specified Perl scalar. If C<create> is set and the
1476Perl variable does not exist then it will be created. If C<create> is not
1477set and the variable does not exist then NULL is returned.
1478
1479=cut
1480*/
1481
6224f72b 1482SV*
864dbfa3 1483Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1484{
1485 GV *gv;
1486#ifdef USE_THREADS
1487 if (name[1] == '\0' && !isALPHA(name[0])) {
1488 PADOFFSET tmp = find_threadsv(name);
411caa50 1489 if (tmp != NOT_IN_PAD)
6224f72b 1490 return THREADSV(tmp);
6224f72b
GS
1491 }
1492#endif /* USE_THREADS */
1493 gv = gv_fetchpv(name, create, SVt_PV);
1494 if (gv)
1495 return GvSV(gv);
1496 return Nullsv;
1497}
1498
954c1994
GS
1499/*
1500=for apidoc p||get_av
1501
1502Returns the AV of the specified Perl array. If C<create> is set and the
1503Perl variable does not exist then it will be created. If C<create> is not
1504set and the variable does not exist then NULL is returned.
1505
1506=cut
1507*/
1508
6224f72b 1509AV*
864dbfa3 1510Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1511{
1512 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1513 if (create)
1514 return GvAVn(gv);
1515 if (gv)
1516 return GvAV(gv);
1517 return Nullav;
1518}
1519
954c1994
GS
1520/*
1521=for apidoc p||get_hv
1522
1523Returns the HV of the specified Perl hash. If C<create> is set and the
1524Perl variable does not exist then it will be created. If C<create> is not
1525set and the variable does not exist then NULL is returned.
1526
1527=cut
1528*/
1529
6224f72b 1530HV*
864dbfa3 1531Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1532{
a0d0e21e
LW
1533 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1534 if (create)
1535 return GvHVn(gv);
1536 if (gv)
1537 return GvHV(gv);
1538 return Nullhv;
1539}
1540
954c1994
GS
1541/*
1542=for apidoc p||get_cv
1543
1544Returns the CV of the specified Perl subroutine. If C<create> is set and
1545the Perl subroutine does not exist then it will be declared (which has the
1546same effect as saying C<sub name;>). If C<create> is not set and the
1547subroutine does not exist then NULL is returned.
1548
1549=cut
1550*/
1551
a0d0e21e 1552CV*
864dbfa3 1553Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1554{
1555 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1556 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1557 /* XXX this is probably not what they think they're getting.
1558 * It has the same effect as "sub name;", i.e. just a forward
1559 * declaration! */
8ebc5c01 1560 if (create && !GvCVu(gv))
774d564b 1561 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1562 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1563 Nullop,
a0d0e21e
LW
1564 Nullop);
1565 if (gv)
8ebc5c01 1566 return GvCVu(gv);
a0d0e21e
LW
1567 return Nullcv;
1568}
1569
79072805
LW
1570/* Be sure to refetch the stack pointer after calling these routines. */
1571
954c1994
GS
1572/*
1573=for apidoc p||call_argv
1574
1575Performs a callback to the specified Perl sub. See L<perlcall>.
1576
1577=cut
1578*/
1579
a0d0e21e 1580I32
864dbfa3 1581Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1582
8ac85365
NIS
1583 /* See G_* flags in cop.h */
1584 /* null terminated arg list */
8990e307 1585{
a0d0e21e 1586 dSP;
8990e307 1587
924508f0 1588 PUSHMARK(SP);
a0d0e21e 1589 if (argv) {
8990e307 1590 while (*argv) {
a0d0e21e 1591 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1592 argv++;
1593 }
a0d0e21e 1594 PUTBACK;
8990e307 1595 }
864dbfa3 1596 return call_pv(sub_name, flags);
8990e307
LW
1597}
1598
954c1994
GS
1599/*
1600=for apidoc p||call_pv
1601
1602Performs a callback to the specified Perl sub. See L<perlcall>.
1603
1604=cut
1605*/
1606
a0d0e21e 1607I32
864dbfa3 1608Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1609 /* name of the subroutine */
1610 /* See G_* flags in cop.h */
a0d0e21e 1611{
864dbfa3 1612 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1613}
1614
954c1994
GS
1615/*
1616=for apidoc p||call_method
1617
1618Performs a callback to the specified Perl method. The blessed object must
1619be on the stack. See L<perlcall>.
1620
1621=cut
1622*/
1623
a0d0e21e 1624I32
864dbfa3 1625Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1626 /* name of the subroutine */
1627 /* See G_* flags in cop.h */
a0d0e21e 1628{
968b3946 1629 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1630}
1631
1632/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1633/*
1634=for apidoc p||call_sv
1635
1636Performs a callback to the Perl sub whose name is in the SV. See
1637L<perlcall>.
1638
1639=cut
1640*/
1641
a0d0e21e 1642I32
864dbfa3 1643Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1644 /* See G_* flags in cop.h */
a0d0e21e 1645{
924508f0 1646 dSP;
a0d0e21e 1647 LOGOP myop; /* fake syntax tree node */
968b3946 1648 UNOP method_op;
aa689395 1649 I32 oldmark;
a0d0e21e 1650 I32 retval;
a0d0e21e 1651 I32 oldscope;
54310121 1652 bool oldcatch = CATCH_GET;
6224f72b 1653 int ret;
533c011a 1654 OP* oldop = PL_op;
db36c5a1 1655 dJMPENV;
1e422769 1656
a0d0e21e
LW
1657 if (flags & G_DISCARD) {
1658 ENTER;
1659 SAVETMPS;
1660 }
1661
aa689395 1662 Zero(&myop, 1, LOGOP);
54310121 1663 myop.op_next = Nullop;
f51d4af5 1664 if (!(flags & G_NOARGS))
aa689395 1665 myop.op_flags |= OPf_STACKED;
54310121
PP
1666 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1667 (flags & G_ARRAY) ? OPf_WANT_LIST :
1668 OPf_WANT_SCALAR);
462e5cf6 1669 SAVEOP();
533c011a 1670 PL_op = (OP*)&myop;
aa689395 1671
3280af22
NIS
1672 EXTEND(PL_stack_sp, 1);
1673 *++PL_stack_sp = sv;
aa689395 1674 oldmark = TOPMARK;
3280af22 1675 oldscope = PL_scopestack_ix;
a0d0e21e 1676
3280af22 1677 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1678 /* Handle first BEGIN of -d. */
3280af22 1679 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1680 /* Try harder, since this may have been a sighandler, thus
1681 * curstash may be meaningless. */
3280af22 1682 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1683 && !(flags & G_NODEBUG))
533c011a 1684 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1685
968b3946
GS
1686 if (flags & G_METHOD) {
1687 Zero(&method_op, 1, UNOP);
1688 method_op.op_next = PL_op;
1689 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1690 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1691 PL_op = (OP*)&method_op;
968b3946
GS
1692 }
1693
312caa8e 1694 if (!(flags & G_EVAL)) {
0cdb2077 1695 CATCH_SET(TRUE);
14dd3ad8 1696 call_body((OP*)&myop, FALSE);
312caa8e 1697 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1698 CATCH_SET(oldcatch);
312caa8e
CS
1699 }
1700 else {
d78bda3d 1701 myop.op_other = (OP*)&myop;
3280af22 1702 PL_markstack_ptr--;
4633a7c4
LW
1703 /* we're trying to emulate pp_entertry() here */
1704 {
c09156bb 1705 register PERL_CONTEXT *cx;
54310121 1706 I32 gimme = GIMME_V;
ac27b0f5 1707
4633a7c4
LW
1708 ENTER;
1709 SAVETMPS;
ac27b0f5 1710
968b3946 1711 push_return(Nullop);
1d76a5c3 1712 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1713 PUSHEVAL(cx, 0, 0);
533c011a 1714 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1715
faef0170 1716 PL_in_eval = EVAL_INEVAL;
4633a7c4 1717 if (flags & G_KEEPERR)
faef0170 1718 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1719 else
38a03e6e 1720 sv_setpv(ERRSV,"");
4633a7c4 1721 }
3280af22 1722 PL_markstack_ptr++;
a0d0e21e 1723
14dd3ad8
GS
1724#ifdef PERL_FLEXIBLE_EXCEPTIONS
1725 redo_body:
1726 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1727 (OP*)&myop, FALSE);
14dd3ad8
GS
1728#else
1729 JMPENV_PUSH(ret);
1730#endif
6224f72b
GS
1731 switch (ret) {
1732 case 0:
14dd3ad8
GS
1733#ifndef PERL_FLEXIBLE_EXCEPTIONS
1734 redo_body:
1735 call_body((OP*)&myop, FALSE);
1736#endif
312caa8e
CS
1737 retval = PL_stack_sp - (PL_stack_base + oldmark);
1738 if (!(flags & G_KEEPERR))
1739 sv_setpv(ERRSV,"");
a0d0e21e 1740 break;
6224f72b 1741 case 1:
f86702cc 1742 STATUS_ALL_FAILURE;
a0d0e21e 1743 /* FALL THROUGH */
6224f72b 1744 case 2:
a0d0e21e 1745 /* my_exit() was called */
3280af22 1746 PL_curstash = PL_defstash;
a0d0e21e 1747 FREETMPS;
14dd3ad8 1748 JMPENV_POP;
cc3604b1 1749 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1750 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1751 my_exit_jump();
a0d0e21e 1752 /* NOTREACHED */
6224f72b 1753 case 3:
3280af22 1754 if (PL_restartop) {
533c011a 1755 PL_op = PL_restartop;
3280af22 1756 PL_restartop = 0;
312caa8e 1757 goto redo_body;
a0d0e21e 1758 }
3280af22 1759 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1760 if (flags & G_ARRAY)
1761 retval = 0;
1762 else {
1763 retval = 1;
3280af22 1764 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1765 }
312caa8e 1766 break;
a0d0e21e 1767 }
a0d0e21e 1768
3280af22 1769 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1770 SV **newsp;
1771 PMOP *newpm;
1772 I32 gimme;
c09156bb 1773 register PERL_CONTEXT *cx;
a0a2876f
LW
1774 I32 optype;
1775
1776 POPBLOCK(cx,newpm);
1777 POPEVAL(cx);
1778 pop_return();
3280af22 1779 PL_curpm = newpm;
a0a2876f 1780 LEAVE;
a0d0e21e 1781 }
14dd3ad8 1782 JMPENV_POP;
a0d0e21e 1783 }
1e422769 1784
a0d0e21e 1785 if (flags & G_DISCARD) {
3280af22 1786 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1787 retval = 0;
1788 FREETMPS;
1789 LEAVE;
1790 }
533c011a 1791 PL_op = oldop;
a0d0e21e
LW
1792 return retval;
1793}
1794
14dd3ad8 1795#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1796STATIC void *
14dd3ad8 1797S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1798{
1799 OP *myop = va_arg(args, OP*);
1800 int is_eval = va_arg(args, int);
1801
14dd3ad8 1802 call_body(myop, is_eval);
312caa8e
CS
1803 return NULL;
1804}
14dd3ad8 1805#endif
312caa8e
CS
1806
1807STATIC void
14dd3ad8 1808S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1809{
312caa8e
CS
1810 if (PL_op == myop) {
1811 if (is_eval)
f807eda9 1812 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1813 else
f807eda9 1814 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1815 }
1816 if (PL_op)
cea2e8a9 1817 CALLRUNOPS(aTHX);
312caa8e
CS
1818}
1819
6e72f9df 1820/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1821
954c1994
GS
1822/*
1823=for apidoc p||eval_sv
1824
1825Tells Perl to C<eval> the string in the SV.
1826
1827=cut
1828*/
1829
a0d0e21e 1830I32
864dbfa3 1831Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1832
8ac85365 1833 /* See G_* flags in cop.h */
a0d0e21e 1834{
924508f0 1835 dSP;
a0d0e21e 1836 UNOP myop; /* fake syntax tree node */
3280af22 1837 I32 oldmark = SP - PL_stack_base;
4633a7c4 1838 I32 retval;
4633a7c4 1839 I32 oldscope;
6224f72b 1840 int ret;
533c011a 1841 OP* oldop = PL_op;
db36c5a1 1842 dJMPENV;
84902520 1843
4633a7c4
LW
1844 if (flags & G_DISCARD) {
1845 ENTER;
1846 SAVETMPS;
1847 }
1848
462e5cf6 1849 SAVEOP();
533c011a
NIS
1850 PL_op = (OP*)&myop;
1851 Zero(PL_op, 1, UNOP);
3280af22
NIS
1852 EXTEND(PL_stack_sp, 1);
1853 *++PL_stack_sp = sv;
1854 oldscope = PL_scopestack_ix;
79072805 1855
4633a7c4
LW
1856 if (!(flags & G_NOARGS))
1857 myop.op_flags = OPf_STACKED;
79072805 1858 myop.op_next = Nullop;
6e72f9df 1859 myop.op_type = OP_ENTEREVAL;
54310121
PP
1860 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1861 (flags & G_ARRAY) ? OPf_WANT_LIST :
1862 OPf_WANT_SCALAR);
6e72f9df
PP
1863 if (flags & G_KEEPERR)
1864 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1865
14dd3ad8 1866#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1867 redo_body:
14dd3ad8 1868 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1869 (OP*)&myop, TRUE);
14dd3ad8
GS
1870#else
1871 JMPENV_PUSH(ret);
1872#endif
6224f72b
GS
1873 switch (ret) {
1874 case 0:
14dd3ad8
GS
1875#ifndef PERL_FLEXIBLE_EXCEPTIONS
1876 redo_body:
1877 call_body((OP*)&myop,TRUE);
1878#endif
312caa8e
CS
1879 retval = PL_stack_sp - (PL_stack_base + oldmark);
1880 if (!(flags & G_KEEPERR))
1881 sv_setpv(ERRSV,"");
4633a7c4 1882 break;
6224f72b 1883 case 1:
f86702cc 1884 STATUS_ALL_FAILURE;
4633a7c4 1885 /* FALL THROUGH */
6224f72b 1886 case 2:
4633a7c4 1887 /* my_exit() was called */
3280af22 1888 PL_curstash = PL_defstash;
4633a7c4 1889 FREETMPS;
14dd3ad8 1890 JMPENV_POP;
cc3604b1 1891 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1892 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1893 my_exit_jump();
4633a7c4 1894 /* NOTREACHED */
6224f72b 1895 case 3:
3280af22 1896 if (PL_restartop) {
533c011a 1897 PL_op = PL_restartop;
3280af22 1898 PL_restartop = 0;
312caa8e 1899 goto redo_body;
4633a7c4 1900 }
3280af22 1901 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1902 if (flags & G_ARRAY)
1903 retval = 0;
1904 else {
1905 retval = 1;
3280af22 1906 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1907 }
312caa8e 1908 break;
4633a7c4
LW
1909 }
1910
14dd3ad8 1911 JMPENV_POP;
4633a7c4 1912 if (flags & G_DISCARD) {
3280af22 1913 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1914 retval = 0;
1915 FREETMPS;
1916 LEAVE;
1917 }
533c011a 1918 PL_op = oldop;
4633a7c4
LW
1919 return retval;
1920}
1921
954c1994
GS
1922/*
1923=for apidoc p||eval_pv
1924
1925Tells Perl to C<eval> the given string and return an SV* result.
1926
1927=cut
1928*/
1929
137443ea 1930SV*
864dbfa3 1931Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
1932{
1933 dSP;
1934 SV* sv = newSVpv(p, 0);
1935
864dbfa3 1936 eval_sv(sv, G_SCALAR);
137443ea
PP
1937 SvREFCNT_dec(sv);
1938
1939 SPAGAIN;
1940 sv = POPs;
1941 PUTBACK;
1942
2d8e6c8d
GS
1943 if (croak_on_error && SvTRUE(ERRSV)) {
1944 STRLEN n_a;
cea2e8a9 1945 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1946 }
137443ea
PP
1947
1948 return sv;
1949}
1950
4633a7c4
LW
1951/* Require a module. */
1952
954c1994
GS
1953/*
1954=for apidoc p||require_pv
1955
1956Tells Perl to C<require> a module.
1957
1958=cut
1959*/
1960
4633a7c4 1961void
864dbfa3 1962Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1963{
d3acc0f7
JP
1964 SV* sv;
1965 dSP;
e788e7d3 1966 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
1967 PUTBACK;
1968 sv = sv_newmortal();
4633a7c4
LW
1969 sv_setpv(sv, "require '");
1970 sv_catpv(sv, pv);
1971 sv_catpv(sv, "'");
864dbfa3 1972 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
1973 SPAGAIN;
1974 POPSTACK;
79072805
LW
1975}
1976
79072805 1977void
864dbfa3 1978Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
1979{
1980 register GV *gv;
1981
155aba94 1982 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW
1983 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1984}
1985
76e3520e 1986STATIC void
cea2e8a9 1987S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 1988{
ab821d7f
PP
1989 /* This message really ought to be max 23 lines.
1990 * Removed -h because the user already knows that opton. Others? */
fb73857a 1991
76e3520e 1992 static char *usage_msg[] = {
fb73857a
PP
1993"-0[octal] specify record separator (\\0, if no argument)",
1994"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 1995"-C enable native wide character system interfaces",
1950ee41 1996"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
1997"-d[:debugger] run program under debugger",
1998"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1999"-e 'command' one line of program (several -e's allowed, omit programfile)",
2000"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2001"-i[extension] edit <> files in place (makes backup if extension supplied)",
2002"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2003"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2004"-[mM][-]module execute `use/no module...' before executing program",
2005"-n assume 'while (<>) { ... }' loop around program",
2006"-p assume loop like -n but print line also, like sed",
2007"-P run program through C preprocessor before compilation",
2008"-s enable rudimentary parsing for switches after programfile",
2009"-S look for programfile using PATH environment variable",
2010"-T enable tainting checks",
2011"-u dump core after parsing program",
fb73857a 2012"-U allow unsafe operations",
aac3bd0d
GS
2013"-v print version, subversion (includes VERY IMPORTANT perl info)",
2014"-V[:variable] print configuration summary (or a single Config.pm variable)",
2015"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2016"-W enable all warnings",
2017"-X disable all warnings",
fb73857a
PP
2018"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2019"\n",
2020NULL
2021};
76e3520e 2022 char **p = usage_msg;
fb73857a 2023
b0e47665
GS
2024 PerlIO_printf(PerlIO_stdout(),
2025 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2026 name);
fb73857a 2027 while (*p)
b0e47665 2028 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2029}
2030
79072805
LW
2031/* This routine handles any switches that can be given during run */
2032
2033char *
864dbfa3 2034Perl_moreswitches(pTHX_ char *s)
79072805 2035{
ba210ebe 2036 STRLEN numlen;
c07a80fd 2037 U32 rschar;
79072805
LW
2038
2039 switch (*s) {
2040 case '0':
a863c7d1 2041 {
b21ed0a9 2042 numlen = 0; /* disallow underscores */
dff6d3cd 2043 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2044 SvREFCNT_dec(PL_nrs);
c07a80fd 2045 if (rschar & ~((U8)~0))
3280af22 2046 PL_nrs = &PL_sv_undef;
c07a80fd 2047 else if (!rschar && numlen >= 2)
79cb57f6 2048 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2049 else {
2050 char ch = rschar;
79cb57f6 2051 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2052 }
2053 return s + numlen;
a863c7d1 2054 }
46487f74
GS
2055 case 'C':
2056 PL_widesyscalls = TRUE;
2057 s++;
2058 return s;
2304df62 2059 case 'F':
3280af22
NIS
2060 PL_minus_F = TRUE;
2061 PL_splitstr = savepv(s + 1);
2304df62
AD
2062 s += strlen(s);
2063 return s;
79072805 2064 case 'a':
3280af22 2065 PL_minus_a = TRUE;
79072805
LW
2066 s++;
2067 return s;
2068 case 'c':
3280af22 2069 PL_minus_c = TRUE;
79072805
LW
2070 s++;
2071 return s;
2072 case 'd':
bbce6d69 2073 forbid_setid("-d");
4633a7c4 2074 s++;
70c94a19
RR
2075 /* The following permits -d:Mod to accepts arguments following an =
2076 in the fashion that -MSome::Mod does. */
2077 if (*s == ':' || *s == '=') {
2078 char *start;
2079 SV *sv;
2080 sv = newSVpv("use Devel::", 0);
2081 start = ++s;
2082 /* We now allow -d:Module=Foo,Bar */
2083 while(isALNUM(*s) || *s==':') ++s;
2084 if (*s != '=')
2085 sv_catpv(sv, start);
2086 else {
2087 sv_catpvn(sv, start, s-start);
2088 sv_catpv(sv, " split(/,/,q{");
2089 sv_catpv(sv, ++s);
2090 sv_catpv(sv, "})");
2091 }
4633a7c4 2092 s += strlen(s);
70c94a19 2093 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2094 }
ed094faf 2095 if (!PL_perldb) {
3280af22 2096 PL_perldb = PERLDB_ALL;
a0d0e21e 2097 init_debugger();
ed094faf 2098 }
79072805
LW
2099 return s;
2100 case 'D':
0453d815 2101 {
79072805 2102#ifdef DEBUGGING
bbce6d69 2103 forbid_setid("-D");
79072805 2104 if (isALPHA(s[1])) {
607df283 2105 static char debopts[] = "psltocPmfrxuLHXDST";
79072805
LW
2106 char *d;
2107
93a17b20 2108 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2109 PL_debug |= 1 << (d - debopts);
79072805
LW
2110 }
2111 else {
3280af22 2112 PL_debug = atoi(s+1);
79072805
LW
2113 for (s++; isDIGIT(*s); s++) ;
2114 }
3280af22 2115 PL_debug |= 0x80000000;
79072805 2116#else
0453d815
PM
2117 if (ckWARN_d(WARN_DEBUGGING))
2118 Perl_warner(aTHX_ WARN_DEBUGGING,
2119 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2120 for (s++; isALNUM(*s); s++) ;
79072805
LW
2121#endif
2122 /*SUPPRESS 530*/
2123 return s;
0453d815 2124 }
4633a7c4 2125 case 'h':
ac27b0f5 2126 usage(PL_origargv[0]);
6ad3d225 2127 PerlProc_exit(0);
79072805 2128 case 'i':
3280af22
NIS
2129 if (PL_inplace)
2130 Safefree(PL_inplace);
2131 PL_inplace = savepv(s+1);
79072805 2132 /*SUPPRESS 530*/
3280af22 2133 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2134 if (*s) {
fb73857a 2135 *s++ = '\0';
7b8d334a
GS
2136 if (*s == '-') /* Additional switches on #! line. */
2137 s++;
2138 }
fb73857a
PP
2139 return s;
2140 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2141 forbid_setid("-I");
fb73857a
PP
2142 ++s;
2143 while (*s && isSPACE(*s))
2144 ++s;
2145 if (*s) {
774d564b 2146 char *e, *p;
0df16ed7
GS
2147 p = s;
2148 /* ignore trailing spaces (possibly followed by other switches) */
2149 do {
2150 for (e = p; *e && !isSPACE(*e); e++) ;
2151 p = e;
2152 while (isSPACE(*p))
2153 p++;
2154 } while (*p && *p != '-');
2155 e = savepvn(s, e-s);
9c8a64f0 2156 incpush(e, TRUE, TRUE);
0df16ed7
GS
2157 Safefree(e);
2158 s = p;
2159 if (*s == '-')
2160 s++;
79072805
LW
2161 }
2162 else
a67e862a 2163 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2164 return s;
79072805 2165 case 'l':
3280af22 2166 PL_minus_l = TRUE;
79072805 2167 s++;
7889fe52
NIS
2168 if (PL_ors_sv) {
2169 SvREFCNT_dec(PL_ors_sv);
2170 PL_ors_sv = Nullsv;
2171 }
79072805 2172 if (isDIGIT(*s)) {
7889fe52 2173 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2174 numlen = 0; /* disallow underscores */
7889fe52 2175 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2176 s += numlen;
2177 }
2178 else {
3280af22 2179 if (RsPARA(PL_nrs)) {
7889fe52
NIS
2180 PL_ors_sv = newSVpvn("\n\n",2);
2181 }
2182 else {
2183 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2184 }
79072805
LW
2185 }
2186 return s;
1a30305b 2187 case 'M':
bbce6d69 2188 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2189 /* FALL THROUGH */
2190 case 'm':
bbce6d69 2191 forbid_setid("-m"); /* XXX ? */
1a30305b 2192 if (*++s) {
a5f75d66 2193 char *start;
11343788 2194 SV *sv;
a5f75d66
AD
2195 char *use = "use ";
2196 /* -M-foo == 'no foo' */
2197 if (*s == '-') { use = "no "; ++s; }
11343788 2198 sv = newSVpv(use,0);
a5f75d66 2199 start = s;
1a30305b 2200 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2201 while(isALNUM(*s) || *s==':') ++s;
2202 if (*s != '=') {
11343788 2203 sv_catpv(sv, start);
c07a80fd
PP
2204 if (*(start-1) == 'm') {
2205 if (*s != '\0')
cea2e8a9 2206 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2207 sv_catpv( sv, " ()");
c07a80fd
PP
2208 }
2209 } else {
6df41af2 2210 if (s == start)
be98fb35
GS
2211 Perl_croak(aTHX_ "Module name required with -%c option",
2212 s[-1]);
11343788
MB
2213 sv_catpvn(sv, start, s-start);
2214 sv_catpv(sv, " split(/,/,q{");
2215 sv_catpv(sv, ++s);
2216 sv_catpv(sv, "})");
c07a80fd 2217 }
1a30305b 2218 s += strlen(s);
5c831c24 2219 if (!PL_preambleav)
3280af22
NIS
2220 PL_preambleav = newAV();
2221 av_push(PL_preambleav, sv);
1a30305b
PP
2222 }
2223 else
cea2e8a9 2224 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2225 return s;
79072805 2226 case 'n':
3280af22 2227 PL_minus_n = TRUE;
79072805
LW
2228 s++;
2229 return s;
2230 case 'p':
3280af22 2231 PL_minus_p = TRUE;
79072805
LW
2232 s++;
2233 return s;
2234 case 's':
bbce6d69 2235 forbid_setid("-s");
3280af22 2236 PL_doswitches = TRUE;
79072805
LW
2237 s++;
2238 return s;
463ee0b2 2239 case 'T':
3280af22 2240 if (!PL_tainting)
cea2e8a9 2241 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2242 s++;
2243 return s;
79072805 2244 case 'u':
bf4acbe4
GS
2245#ifdef MACOS_TRADITIONAL
2246 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2247#endif
3280af22 2248 PL_do_undump = TRUE;
79072805
LW
2249 s++;
2250 return s;
2251 case 'U':
3280af22 2252 PL_unsafe = TRUE;
79072805
LW
2253 s++;
2254 return s;
2255 case 'v':
b0e47665 2256 PerlIO_printf(PerlIO_stdout(),
d2560b70 2257 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2258 PL_patchlevel, ARCHNAME));
fb73857a
PP
2259#if defined(LOCAL_PATCH_COUNT)
2260 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2261 PerlIO_printf(PerlIO_stdout(),
2262 "\n(with %d registered patch%s, "
2263 "see perl -V for more detail)",
2264 (int)LOCAL_PATCH_COUNT,
2265 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2266#endif
1a30305b 2267
b0e47665 2268 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2269 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2270#ifdef MACOS_TRADITIONAL
2271 PerlIO_printf(PerlIO_stdout(),
084592ab 2272 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2273#endif
79072805 2274#ifdef MSDOS
b0e47665
GS
2275 PerlIO_printf(PerlIO_stdout(),
2276 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2277#endif
2278#ifdef DJGPP
b0e47665
GS
2279 PerlIO_printf(PerlIO_stdout(),
2280 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2281 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2282#endif
79072805 2283#ifdef OS2
b0e47665
GS
2284 PerlIO_printf(PerlIO_stdout(),
2285 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2286 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2287#endif
79072805 2288#ifdef atarist
b0e47665
GS
2289 PerlIO_printf(PerlIO_stdout(),
2290 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2291#endif
a3f9223b 2292#ifdef __BEOS__
b0e47665
GS
2293 PerlIO_printf(PerlIO_stdout(),
2294 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2295#endif
1d84e8df 2296#ifdef MPE
b0e47665
GS
2297 PerlIO_printf(PerlIO_stdout(),
2298 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2299#endif
9d116dd7 2300#ifdef OEMVS
b0e47665
GS
2301 PerlIO_printf(PerlIO_stdout(),
2302 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2303#endif
495c5fdc 2304#ifdef __VOS__
b0e47665
GS
2305 PerlIO_printf(PerlIO_stdout(),
2306 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2307#endif
092bebab 2308#ifdef __OPEN_VM
b0e47665
GS
2309 PerlIO_printf(PerlIO_stdout(),
2310 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2311#endif
a1a0e61e 2312#ifdef POSIX_BC
b0e47665
GS
2313 PerlIO_printf(PerlIO_stdout(),
2314 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2315#endif
61ae2fbf 2316#ifdef __MINT__
b0e47665
GS
2317 PerlIO_printf(PerlIO_stdout(),
2318 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2319#endif
f83d2536 2320#ifdef EPOC
b0e47665
GS
2321 PerlIO_printf(PerlIO_stdout(),
2322 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2323#endif
baed7233
DL
2324#ifdef BINARY_BUILD_NOTICE
2325 BINARY_BUILD_NOTICE;
2326#endif
b0e47665
GS
2327 PerlIO_printf(PerlIO_stdout(),
2328 "\n\
79072805 2329Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2330GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2331Complete documentation for Perl, including FAQ lists, should be found on\n\
2332this system using `man perl' or `perldoc perl'. If you have access to the\n\
2333Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2334 PerlProc_exit(0);
79072805 2335 case 'w':
599cee73 2336 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2337 PL_dowarn |= G_WARN_ON;
599cee73
PM
2338 s++;
2339 return s;
2340 case 'W':
ac27b0f5 2341 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2342 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2343 s++;
2344 return s;
2345 case 'X':
ac27b0f5 2346 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2347 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2348 s++;
2349 return s;
a0d0e21e 2350 case '*':
79072805
LW
2351 case ' ':
2352 if (s[1] == '-') /* Additional switches on #! line. */
2353 return s+2;
2354 break;
a0d0e21e 2355 case '-':
79072805 2356 case 0:
51882d45 2357#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2358 case '\r':
2359#endif
79072805
LW
2360 case '\n':
2361 case '\t':
2362 break;
aa689395
PP
2363#ifdef ALTERNATE_SHEBANG
2364 case 'S': /* OS/2 needs -S on "extproc" line. */
2365 break;
2366#endif
a0d0e21e 2367 case 'P':
3280af22 2368 if (PL_preprocess)
a0d0e21e
LW
2369 return s+1;
2370 /* FALL THROUGH */
79072805 2371 default:
cea2e8a9 2372 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2373 }
2374 return Nullch;
2375}
2376
2377/* compliments of Tom Christiansen */
2378
2379/* unexec() can be found in the Gnu emacs distribution */
ee580363 2380/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2381
2382void
864dbfa3 2383Perl_my_unexec(pTHX)
79072805
LW
2384{
2385#ifdef UNEXEC
46fc3d4c
PP
2386 SV* prog;
2387 SV* file;
ee580363 2388 int status = 1;
79072805
LW
2389 extern int etext;
2390
ee580363 2391 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2392 sv_catpv(prog, "/perl");
6b88bc9c 2393 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2394 sv_catpv(file, ".perldump");
79072805 2395
ee580363
GS
2396 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2397 /* unexec prints msg to stderr in case of failure */
6ad3d225 2398 PerlProc_exit(status);
79072805 2399#else
a5f75d66
AD
2400# ifdef VMS
2401# include <lib$routines.h>
2402 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2403# else
79072805 2404 ABORT(); /* for use with undump */
aa689395 2405# endif
a5f75d66 2406#endif
79072805
LW
2407}
2408
cb68f92d
GS
2409/* initialize curinterp */
2410STATIC void
cea2e8a9 2411S_init_interp(pTHX)
cb68f92d
GS
2412{
2413
066ef5b5 2414#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2415#define I_REINIT \
6b88bc9c
GS
2416 STMT_START { \
2417 PL_chopset = " \n-"; \
2418 PL_copline = NOLINE; \
2419 PL_curcop = &PL_compiling;\
2420 PL_curcopdb = NULL; \
2421 PL_dbargs = 0; \
3967c732 2422 PL_dumpindent = 4; \
6b88bc9c
GS
2423 PL_laststatval = -1; \
2424 PL_laststype = OP_STAT; \
2425 PL_maxscream = -1; \
2426 PL_maxsysfd = MAXSYSFD; \
2427 PL_statname = Nullsv; \
2428 PL_tmps_floor = -1; \
2429 PL_tmps_ix = -1; \
2430 PL_op_mask = NULL; \
6b88bc9c
GS
2431 PL_laststatval = -1; \
2432 PL_laststype = OP_STAT; \
2433 PL_mess_sv = Nullsv; \
2434 PL_splitstr = " "; \
2435 PL_generation = 100; \
2436 PL_exitlist = NULL; \
2437 PL_exitlistlen = 0; \
2438 PL_regindent = 0; \
2439 PL_in_clean_objs = FALSE; \
2440 PL_in_clean_all = FALSE; \
2441 PL_profiledata = NULL; \
2442 PL_rsfp = Nullfp; \
2443 PL_rsfp_filters = Nullav; \
24d3c518 2444 PL_dirty = FALSE; \
cb68f92d 2445 } STMT_END
9666903d 2446 I_REINIT;
066ef5b5
GS
2447#else
2448# ifdef MULTIPLICITY
2449# define PERLVAR(var,type)
51371543 2450# define PERLVARA(var,n,type)
cea2e8a9 2451# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2452# if defined(USE_THREADS)
2453# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2454# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2455# else /* !USE_THREADS */
2456# define PERLVARI(var,type,init) aTHX->var = init;
2457# define PERLVARIC(var,type,init) aTHX->var = init;
2458# endif /* USE_THREADS */
cea2e8a9 2459# else
c5be433b
GS
2460# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2461# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2462# endif
066ef5b5
GS
2463# include "intrpvar.h"
2464# ifndef USE_THREADS
2465# include "thrdvar.h"
2466# endif
2467# undef PERLVAR
51371543 2468# undef PERLVARA
066ef5b5
GS
2469# undef PERLVARI
2470# undef PERLVARIC
3967c732 2471# else
066ef5b5 2472# define PERLVAR(var,type)
51371543 2473# define PERLVARA(var,n,type)
533c011a
NIS
2474# define PERLVARI(var,type,init) PL_##var = init;
2475# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2476# include "intrpvar.h"
2477# ifndef USE_THREADS
2478# include "thrdvar.h"
2479# endif
2480# undef PERLVAR
51371543 2481# undef PERLVARA
066ef5b5
GS
2482# undef PERLVARI
2483# undef PERLVARIC
2484# endif
cb68f92d
GS
2485#endif
2486
cb68f92d
GS
2487}
2488
76e3520e 2489STATIC void
cea2e8a9 2490S_init_main_stash(pTHX)
79072805 2491{
463ee0b2 2492 GV *gv;
6e72f9df
PP
2493
2494 /* Note that strtab is a rather special HV. Assumptions are made
2495 about not iterating on it, and not adding tie magic to it.
2496 It is properly deallocated in perl_destruct() */
3280af22 2497 PL_strtab = newHV();
5f08fbcd
GS
2498#ifdef USE_THREADS
2499 MUTEX_INIT(&PL_strtab_mutex);
2500#endif
3280af22
NIS
2501 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2502 hv_ksplit(PL_strtab, 512);
ac27b0f5 2503
3280af22 2504 PL_curstash = PL_defstash = newHV();
79cb57f6 2505 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2506 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2507 SvREFCNT_dec(GvHV(gv));
3280af22 2508 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2509 SvREADONLY_on(gv);
3280af22
NIS
2510 HvNAME(PL_defstash) = savepv("main");
2511 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2512 GvMULTI_on(PL_incgv);
2513 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2514 GvMULTI_on(PL_hintgv);
2515 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2516 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2517 GvMULTI_on(PL_errgv);
2518 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2519 GvMULTI_on(PL_replgv);
cea2e8a9 2520 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2521 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2522 sv_setpvn(ERRSV, "", 0);
3280af22 2523 PL_curstash = PL_defstash;
11faa288 2524 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2525 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2526 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2527 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2528 /* We must init $/ before switches are processed. */
864dbfa3 2529 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2530}
2531
76e3520e 2532STATIC void
cea2e8a9 2533S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2534{
6c4ab083 2535 *fdscript = -1;
79072805 2536
3280af22
NIS
2537 if (PL_e_script) {
2538 PL_origfilename = savepv("-e");
96436eeb 2539 }
6c4ab083
GS
2540 else {
2541 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2542 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2543
2544 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2545 char *s = scriptname + 8;
2546 *fdscript = atoi(s);
2547 while (isDIGIT(*s))
2548 s++;
2549 if (*s) {
2550 scriptname = savepv(s + 1);
3280af22
NIS
2551 Safefree(PL_origfilename);
2552 PL_origfilename = scriptname;
6c4ab083
GS
2553 }
2554 }
2555 }
2556
f4dd75d9
GS
2557#ifdef USE_ITHREADS
2558 Safefree(CopFILE(PL_curcop));
2559#else
2560 SvREFCNT_dec(CopFILEGV(PL_curcop));
2561#endif
57843af0 2562 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2563 if (strEQ(PL_origfilename,"-"))
79072805 2564 scriptname = "";
01f988be 2565 if (*fdscript >= 0) {
3280af22 2566 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2567#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2568 if (PL_rsfp)
2569 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2570#endif
2571 }
3280af22 2572 else if (PL_preprocess) {
46fc3d4c 2573 char *cpp_cfg = CPPSTDIN;
79cb57f6 2574 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2575 SV *cmd = NEWSV(0,0);
2576
2577 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2578 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2579 sv_catpv(cpp, cpp_cfg);
79072805 2580
0df16ed7 2581 sv_catpvn(sv, "-I", 2);
fed7345c 2582 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2583
52853b95 2584#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2585 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2586sed %s -e \"/^[^#]/b\" \
2587 -e \"/^#[ ]*include[ ]/b\" \
2588 -e \"/^#[ ]*define[ ]/b\" \
2589 -e \"/^#[ ]*if[ ]/b\" \
2590 -e \"/^#[ ]*ifdef[ ]/b\" \
2591 -e \"/^#[ ]*ifndef[ ]/b\" \
2592 -e \"/^#[ ]*else/b\" \
2593 -e \"/^#[ ]*elif[ ]/b\" \
2594 -e \"/^#[ ]*undef[ ]/b\" \
2595 -e \"/^#[ ]*endif/b\" \
2596 -e \"s/^#.*//\" \
894356b3 2597 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2598 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2599#else
092bebab 2600# ifdef __OPEN_VM
cea2e8a9 2601 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2602%s %s -e '/^[^#]/b' \
2603 -e '/^#[ ]*include[ ]/b' \
2604 -e '/^#[ ]*define[ ]/b' \
2605 -e '/^#[ ]*if[ ]/b' \
2606 -e '/^#[ ]*ifdef[ ]/b' \
2607 -e '/^#[ ]*ifndef[ ]/b' \
2608 -e '/^#[ ]*else/b' \
2609 -e '/^#[ ]*elif[ ]/b' \
2610 -e '/^#[ ]*undef[ ]/b' \
2611 -e '/^#[ ]*endif/b' \
2612 -e 's/^[ ]*#.*//' \
894356b3 2613 %s | %"SVf" %"SVf" %s",
092bebab 2614# else
cea2e8a9 2615 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2616%s %s -e '/^[^#]/b' \
2617 -e '/^#[ ]*include[ ]/b' \
2618 -e '/^#[ ]*define[ ]/b' \
2619 -e '/^#[ ]*if[ ]/b' \
2620 -e '/^#[ ]*ifdef[ ]/b' \
2621 -e '/^#[ ]*ifndef[ ]/b' \
2622 -e '/^#[ ]*else/b' \
2623 -e '/^#[ ]*elif[ ]/b' \
2624 -e '/^#[ ]*undef[ ]/b' \
2625 -e '/^#[ ]*endif/b' \
2626 -e 's/^[ ]*#.*//' \
894356b3 2627 %s | %"SVf" -C %"SVf" %s",
092bebab 2628# endif
79072805
LW
2629#ifdef LOC_SED
2630 LOC_SED,
2631#else
2632 "sed",
2633#endif
3280af22 2634 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2635#endif
46fc3d4c 2636 scriptname, cpp, sv, CPPMINUS);
3280af22 2637 PL_doextract = FALSE;
79072805 2638#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2639 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2640#ifdef HAS_SETEUID
b28d0864 2641 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2642#else
2643#ifdef HAS_SETREUID
b28d0864 2644 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2645#else
2646#ifdef HAS_SETRESUID
b28d0864 2647 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2648#else
b28d0864 2649 PerlProc_setuid(PL_uid);
79072805
LW
2650#endif
2651#endif
85e6fe83 2652#endif
b28d0864 2653 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2654 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2655 }
2656#endif /* IAMSUID */
3280af22 2657 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2658 SvREFCNT_dec(cmd);
2659 SvREFCNT_dec(cpp);
79072805
LW
2660 }
2661 else if (!*scriptname) {
bbce6d69 2662 forbid_setid("program input from stdin");
3280af22 2663 PL_rsfp = PerlIO_stdin();
79072805 2664 }
96436eeb 2665 else {
3280af22 2666 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2667#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2668 if (PL_rsfp)
2669 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2670#endif
2671 }
3280af22 2672 if (!PL_rsfp) {
13281fa4 2673#ifdef DOSUID
a687059c 2674#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2675 if (PL_euid &&
cc49e20b 2676 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2677 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2678 {
46fc3d4c 2679 /* try again */
a7cb1f99 2680 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2681 (int)PERL_REVISION, (int)PERL_VERSION,
2682 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2683 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2684 }
2685#endif
2686#endif
cea2e8a9 2687 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2688 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2689 }
79072805 2690}
8d063cd8 2691
7b89560d
JH
2692/* Mention
2693 * I_SYSSTATVFS HAS_FSTATVFS
2694 * I_SYSMOUNT
c890dc6c 2695 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2696 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2697 * here so that metaconfig picks them up. */
2698
104d25b7 2699#ifdef IAMSUID
864dbfa3 2700STATIC int
e688b231 2701S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2702{
0545a864
JH
2703 int check_okay = 0; /* able to do all the required sys/libcalls */
2704 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2705/*
ad27e871 2706 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2707 * fstatvfs() is UNIX98.
0545a864 2708 * fstatfs() is 4.3 BSD.
ad27e871 2709 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2710 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2711 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2712 */
2713
6439433f
JH
2714#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2715
2716# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2717 defined(HAS_FSTATVFS)
2718# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2719 struct statvfs stfs;
6439433f 2720
104d25b7
JH
2721 check_okay = fstatvfs(fd, &stfs) == 0;
2722 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2723# endif /* fstatvfs */
ac27b0f5 2724
6439433f
JH
2725# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2726 defined(PERL_MOUNT_NOSUID) && \
2727 defined(HAS_FSTATFS) && \
2728 defined(HAS_STRUCT_STATFS) && \
2729 defined(HAS_STRUCT_STATFS_F_FLAGS)
2730# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2731 struct statfs stfs;
6439433f 2732
104d25b7 2733 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2734 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2735# endif /* fstatfs */
2736
2737# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2738 defined(PERL_MOUNT_NOSUID) && \
2739 defined(HAS_FSTAT) && \
2740 defined(HAS_USTAT) && \
2741 defined(HAS_GETMNT) && \
2742 defined(HAS_STRUCT_FS_DATA) && \
2743 defined(NOSTAT_ONE)
2744# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2745 struct stat fdst;
6439433f 2746
0545a864 2747 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2748 struct ustat us;
2749 if (ustat(fdst.st_dev, &us) == 0) {
2750 struct fs_data fsd;
2751 /* NOSTAT_ONE here because we're not examining fields which
2752 * vary between that case and STAT_ONE. */
ad27e871 2753 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2754 size_t cmplen = sizeof(us.f_fname);
2755 if (sizeof(fsd.fd_req.path) < cmplen)
2756 cmplen = sizeof(fsd.fd_req.path);
2757 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2758 fdst.st_dev == fsd.fd_req.dev) {
2759 check_okay = 1;
2760 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2761 }
2762 }
2763 }
2764 }
0545a864 2765 }
6439433f
JH
2766# endif /* fstat+ustat+getmnt */
2767
2768# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2769 defined(HAS_GETMNTENT) && \
2770 defined(HAS_HASMNTOPT) && \
2771 defined(MNTOPT_NOSUID)
2772# define FD_ON_NOSUID_CHECK_OKAY
2773 FILE *mtab = fopen("/etc/mtab", "r");
2774 struct mntent *entry;
2775 struct stat stb, fsb;
104d25b7
JH
2776
2777 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2778 while (entry = getmntent(mtab)) {
2779 if (stat(entry->mnt_dir, &fsb) == 0
2780 && fsb.st_dev == stb.st_dev)
2781 {
2782 /* found the filesystem */
2783 check_okay = 1;
2784 if (hasmntopt(entry, MNTOPT_NOSUID))
2785 on_nosuid = 1;
2786 break;
2787 } /* A single fs may well fail its stat(). */
2788 }
104d25b7
JH
2789 }
2790 if (mtab)
6439433f
JH
2791 fclose(mtab);
2792# endif /* getmntent+hasmntopt */
0545a864 2793
ac27b0f5 2794 if (!check_okay)
0545a864 2795 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2796 return on_nosuid;
2797}
2798#endif /* IAMSUID */
2799
76e3520e 2800STATIC void
cea2e8a9 2801S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2802{
155aba94 2803#ifdef IAMSUID
96436eeb 2804 int which;
155aba94 2805#endif
96436eeb 2806
13281fa4
LW
2807 /* do we need to emulate setuid on scripts? */
2808
2809 /* This code is for those BSD systems that have setuid #! scripts disabled
2810 * in the kernel because of a security problem. Merely defining DOSUID
2811 * in perl will not fix that problem, but if you have disabled setuid
2812 * scripts in the kernel, this will attempt to emulate setuid and setgid
2813 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2814 * root version must be called suidperl or sperlN.NNN. If regular perl
2815 * discovers that it has opened a setuid script, it calls suidperl with
2816 * the same argv that it had. If suidperl finds that the script it has
2817 * just opened is NOT setuid root, it sets the effective uid back to the
2818 * uid. We don't just make perl setuid root because that loses the
2819 * effective uid we had before invoking perl, if it was different from the
2820 * uid.
13281fa4
LW
2821 *
2822 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2823 * be defined in suidperl only. suidperl must be setuid root. The
2824 * Configure script will set this up for you if you want it.
2825 */
a687059c 2826
13281fa4 2827#ifdef DOSUID
6e72f9df 2828 char *s, *s2;
a0d0e21e 2829
b28d0864 2830 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2831 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2832 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2833 I32 len;
2d8e6c8d 2834 STRLEN n_a;
13281fa4 2835
a687059c 2836#ifdef IAMSUID
fe14fcc3 2837#ifndef HAS_SETREUID
a687059c
LW
2838 /* On this access check to make sure the directories are readable,
2839 * there is actually a small window that the user could use to make
2840 * filename point to an accessible directory. So there is a faint
2841 * chance that someone could execute a setuid script down in a
2842 * non-accessible directory. I don't know what to do about that.
2843 * But I don't think it's too important. The manual lies when
2844 * it says access() is useful in setuid programs.
2845 */
cc49e20b 2846 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2847 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2848#else
2849 /* If we can swap euid and uid, then we can determine access rights
2850 * with a simple stat of the file, and then compare device and
2851 * inode to make sure we did stat() on the same file we opened.
2852 * Then we just have to make sure he or she can execute it.
2853 */
2854 {
2855 struct stat tmpstatbuf;
2856
85e6fe83
LW
2857 if (
2858#ifdef HAS_SETREUID
b28d0864 2859 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2860#else
2861# if HAS_SETRESUID
b28d0864 2862 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2863# endif
85e6fe83 2864#endif
b28d0864 2865 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2866 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2867 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2868 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2869#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2870 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2871 Perl_croak(aTHX_ "Permission denied");
104d25b7 2872#endif
b28d0864
NIS
2873 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2874 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2875 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2876 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2877 }
85e6fe83
LW
2878 if (
2879#ifdef HAS_SETREUID
b28d0864 2880 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2881#else
2882# if defined(HAS_SETRESUID)
b28d0864 2883 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2884# endif
85e6fe83 2885#endif
b28d0864 2886 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2887 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2888 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2889 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2890 }
fe14fcc3 2891#endif /* HAS_SETREUID */
a687059c
LW
2892#endif /* IAMSUID */
2893
b28d0864 2894 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2895 Perl_croak(aTHX_ "Permission denied");
b28d0864 2896 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2897 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2898 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2899 CopLINE_inc(PL_curcop);
6b88bc9c 2900 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2901 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2902 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2903 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2904 if (*s == ' ') s++;
45d8adaa 2905 while (!isSPACE(*s)) s++;
2d8e6c8d 2906 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2907 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2908 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2909 Perl_croak(aTHX_ "Not a perl script");
a687059c 2910 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2911 /*
2912 * #! arg must be what we saw above. They can invoke it by
2913 * mentioning suidperl explicitly, but they may not add any strange
2914 * arguments beyond what #! says if they do invoke suidperl that way.
2915 */
2916 len = strlen(validarg);
2917 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2918 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2919 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
2920
2921#ifndef IAMSUID
b28d0864
NIS
2922 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2923 PL_euid == PL_statbuf.st_uid)
2924 if (!PL_do_undump)
cea2e8a9 2925 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2926FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2927#endif /* IAMSUID */
13281fa4 2928
b28d0864
NIS
2929 if (PL_euid) { /* oops, we're not the setuid root perl */
2930 (void)PerlIO_close(PL_rsfp);
13281fa4 2931#ifndef IAMSUID
46fc3d4c 2932 /* try again */
a7cb1f99 2933 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2934 (int)PERL_REVISION, (int)PERL_VERSION,
2935 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2936#endif
cea2e8a9 2937 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2938 }
2939
b28d0864 2940 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2941#ifdef HAS_SETEGID
b28d0864 2942 (void)setegid(PL_statbuf.st_gid);
a687059c 2943#else
fe14fcc3 2944#ifdef HAS_SETREGID
b28d0864 2945 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
2946#else
2947#ifdef HAS_SETRESGID
b28d0864 2948 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2949#else
b28d0864 2950 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
2951#endif
2952#endif
85e6fe83 2953#endif
b28d0864 2954 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2955 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2956 }
b28d0864
NIS
2957 if (PL_statbuf.st_mode & S_ISUID) {
2958 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2959#ifdef HAS_SETEUID
b28d0864 2960 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2961#else
fe14fcc3 2962#ifdef HAS_SETREUID
b28d0864 2963 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
2964#else
2965#ifdef HAS_SETRESUID
b28d0864 2966 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2967#else
b28d0864 2968 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
2969#endif
2970#endif
85e6fe83 2971#endif
b28d0864 2972 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2973 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2974 }
b28d0864 2975 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2976#ifdef HAS_SETEUID
b28d0864 2977 (void)seteuid((Uid_t)PL_uid);
a687059c 2978#else
fe14fcc3 2979#ifdef HAS_SETREUID
b28d0864 2980 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2981#else
85e6fe83 2982#ifdef HAS_SETRESUID
b28d0864 2983 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2984#else
b28d0864 2985 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2986#endif
a687059c
LW
2987#endif
2988#endif
b28d0864 2989 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2990 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2991 }
748a9306 2992 init_ids();
b28d0864 2993 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2994 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
2995 }
2996#ifdef IAMSUID
6b88bc9c 2997 else if (PL_preprocess)
cea2e8a9 2998 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2999 else if (fdscript >= 0)
cea2e8a9 3000 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3001 else
cea2e8a9 3002 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3003
3004 /* We absolutely must clear out any saved ids here, so we */
3005 /* exec the real perl, substituting fd script for scriptname. */
3006 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3007 PerlIO_rewind(PL_rsfp);
3008 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3009 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3010 if (!PL_origargv[which])
cea2e8a9
GS
3011 Perl_croak(aTHX_ "Permission denied");
3012 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3013 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3014#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3015 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3016#endif
a7cb1f99 3017 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3018 (int)PERL_REVISION, (int)PERL_VERSION,
3019 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3020 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3021#endif /* IAMSUID */
a687059c 3022#else /* !DOSUID */
3280af22 3023 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3024#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3025 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3026 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3027 ||
b28d0864 3028 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3029 )
b28d0864 3030 if (!PL_do_undump)
cea2e8a9 3031 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3032FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3033#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3034 /* not set-id, must be wrapped */
a687059c 3035 }
13281fa4 3036#endif /* DOSUID */
79072805 3037}
13281fa4 3038
76e3520e 3039STATIC void
cea2e8a9 3040S_find_beginning(pTHX)
79072805 3041{
6e72f9df 3042 register char *s, *s2;
33b78306
LW
3043
3044 /* skip forward in input to the real script? */
3045
bbce6d69 3046 forbid_setid("-x");
bf4acbe4 3047#ifdef MACOS_TRADITIONAL
084592ab 3048 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3049
bf4acbe4
GS
3050 while (PL_doextract || gMacPerl_AlwaysExtract) {
3051 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3052 if (!gMacPerl_AlwaysExtract)
3053 Perl_croak(aTHX_ "No Perl script found in input\n");
3054
3055 if (PL_doextract) /* require explicit override ? */
3056 if (!OverrideExtract(PL_origfilename))
3057 Perl_croak(aTHX_ "User aborted script\n");
3058 else
3059 PL_doextract = FALSE;
3060
3061 /* Pater peccavi, file does not have #! */
3062 PerlIO_rewind(PL_rsfp);
ac27b0f5 3063
bf4acbe4
GS
3064 break;
3065 }
3066#else
3280af22
NIS
3067 while (PL_doextract) {
3068 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3069 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3070#endif
6e72f9df 3071 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS
3072 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3073 PL_doextract = FALSE;
6e72f9df
PP
3074 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3075 s2 = s;
3076 while (*s == ' ' || *s == '\t') s++;
3077 if (*s++ == '-') {
3078 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3079 if (strnEQ(s2-4,"perl",4))
3080 /*SUPPRESS 530*/
155aba94
GS
3081 while ((s = moreswitches(s)))
3082 ;
33b78306 3083 }
83025b21
LW
3084 }
3085 }
3086}
3087
afe37c7d 3088
76e3520e 3089STATIC void
cea2e8a9 3090S_init_ids(pTHX)
352d5a3a 3091{
d8eceb89
JH
3092 PL_uid = PerlProc_getuid();
3093 PL_euid = PerlProc_geteuid();
3094 PL_gid = PerlProc_getgid();
3095 PL_egid = PerlProc_getegid();
748a9306 3096#ifdef VMS
b28d0864
NIS
3097 PL_uid |= PL_gid << 16;
3098 PL_euid |= PL_egid << 16;
748a9306 3099#endif
3280af22 3100 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3101}
79072805 3102
76e3520e 3103STATIC void
cea2e8a9 3104S_forbid_setid(pTHX_ char *s)
bbce6d69 3105{
3280af22 3106 if (PL_euid != PL_uid)
cea2e8a9 3107 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3108 if (PL_egid != PL_gid)
cea2e8a9 3109 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3110}
3111
1ee4443e
IZ
3112void
3113Perl_init_debugger(pTHX)
748a9306 3114{
1ee4443e
IZ
3115 HV *ostash = PL_curstash;
3116
3280af22
NIS
3117 PL_curstash = PL_debstash;
3118 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3119 AvREAL_off(PL_dbargs);
3120 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3121 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3122 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3123 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3124 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3125 sv_setiv(PL_DBsingle, 0);
3280af22 3126 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3127 sv_setiv(PL_DBtrace, 0);
3280af22 3128 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3129 sv_setiv(PL_DBsignal, 0);
1ee4443e 3130 PL_curstash = ostash;
352d5a3a
LW
3131}
3132
2ce36478
SM
3133#ifndef STRESS_REALLOC
3134#define REASONABLE(size) (size)
3135#else
3136#define REASONABLE(size) (1) /* unreasonable */
3137#endif
3138
11343788 3139void
cea2e8a9 3140Perl_init_stacks(pTHX)
79072805 3141{
e336de0d 3142 /* start with 128-item stack and 8K cxstack */
3280af22 3143 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3144 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3145 PL_curstackinfo->si_type = PERLSI_MAIN;
3146 PL_curstack = PL_curstackinfo->si_stack;
3147 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3148
3280af22
NIS
3149 PL_stack_base = AvARRAY(PL_curstack);
3150 PL_stack_sp = PL_stack_base;
3151 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3152
3280af22
NIS
3153 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3154 PL_tmps_floor = -1;
3155 PL_tmps_ix = -1;
3156 PL_tmps_max = REASONABLE(128);
8990e307 3157
3280af22
NIS
3158 New(54,PL_markstack,REASONABLE(32),I32);
3159 PL_markstack_ptr = PL_markstack;
3160 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3161
ce2f7c3b 3162 SET_MARK_OFFSET;
e336de0d 3163
3280af22
NIS
3164 New(54,PL_scopestack,REASONABLE(32),I32);
3165 PL_scopestack_ix = 0;
3166 PL_scopestack_max = REASONABLE(32);
79072805 3167
3280af22
NIS
3168 New(54,PL_savestack,REASONABLE(128),ANY);
3169 PL_savestack_ix = 0;
3170 PL_savestack_max = REASONABLE(128);
79072805 3171
3280af22
NIS
3172 New(54,PL_retstack,REASONABLE(16),OP*);
3173 PL_retstack_ix = 0;
3174 PL_retstack_max = REASONABLE(16);
378cc40b 3175}
33b78306 3176
2ce36478
SM
3177#undef REASONABLE
3178
76e3520e 3179STATIC void
cea2e8a9 3180S_nuke_stacks(pTHX)
6e72f9df 3181{
3280af22
NIS
3182 while (PL_curstackinfo->si_next)
3183 PL_curstackinfo = PL_curstackinfo->si_next;
3184 while (PL_curstackinfo) {
3185 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3186 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3187 Safefree(PL_curstackinfo->si_cxstack);
3188 Safefree(PL_curstackinfo);
3189 PL_curstackinfo = p;
e336de0d 3190 }
3280af22
NIS
3191 Safefree(PL_tmps_stack);
3192 Safefree(PL_markstack);
3193 Safefree(PL_scopestack);
3194 Safefree(PL_savestack);
3195 Safefree(PL_retstack);
378cc40b 3196}
33b78306 3197
76e3520e 3198#ifndef PERL_OBJECT
760ac839 3199static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3200#endif
7aa04957 3201
76e3520e 3202STATIC void
cea2e8a9 3203S_init_lexer(pTHX)
8990e307 3204{
76e3520e
GS
3205#ifdef PERL_OBJECT
3206 PerlIO *tmpfp;
3207#endif
3280af22
NIS
3208 tmpfp = PL_rsfp;
3209 PL_rsfp = Nullfp;
3210 lex_start(PL_linestr);
3211 PL_rsfp = tmpfp;
79cb57f6 3212 PL_subname = newSVpvn("main",4);
8990e307
LW
3213}
3214
76e3520e 3215STATIC void
cea2e8a9 3216S_init_predump_symbols(pTHX)
45d8adaa 3217{
93a17b20 3218 GV *tmpgv;
af8c498a 3219 IO *io;
79072805 3220
864dbfa3 3221 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3222 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3223 GvMULTI_on(PL_stdingv);
af8c498a
GS
3224 io = GvIOp(PL_stdingv);
3225 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3226 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3227 GvMULTI_on(tmpgv);
af8c498a 3228 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3229
85e6fe83 3230 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3231 GvMULTI_on(tmpgv);
af8c498a
GS
3232 io = GvIOp(tmpgv);
3233 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3234 setdefout(tmpgv);
adbc6bb1 3235 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3236 GvMULTI_on(tmpgv);
af8c498a 3237 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3238
bf49b057
GS
3239 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3240 GvMULTI_on(PL_stderrgv);
3241 io = GvIOp(PL_stderrgv);
af8c498a 3242 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3243 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3244 GvMULTI_on(tmpgv);
af8c498a 3245 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3246
3280af22 3247 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3248
bf4acbe4
GS
3249 if (PL_osname)
3250 Safefree(PL_osname);
3251 PL_osname = savepv(OSNAME);
79072805 3252}
33b78306 3253
76e3520e 3254STATIC void
cea2e8a9 3255S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3256{
79072805
LW
3257 char *s;
3258 SV *sv;
3259 GV* tmpgv;
103a7189 3260 char **dup_env_base = 0;
9cbac4c7 3261#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189 3262 int dup_env_count = 0;
9cbac4c7 3263#endif
fe14fcc3 3264
79072805 3265 argc--,argv++; /* skip name of script */
3280af22 3266 if (PL_doswitches) {
79072805
LW
3267 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3268 if (!argv[0][1])
3269 break;
379d538a 3270 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3271 argc--,argv++;
3272 break;
3273 }
155aba94 3274 if ((s = strchr(argv[0], '='))) {
79072805 3275 *s++ = '\0';
85e6fe83 3276 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3277 }
3278 else
85e6fe83 3279 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3280 }
79072805 3281 }
3280af22
NIS
3282 PL_toptarget = NEWSV(0,0);
3283 sv_upgrade(PL_toptarget, SVt_PVFM);
3284 sv_setpvn(PL_toptarget, "", 0);
3285 PL_bodytarget = NEWSV(0,0);
3286 sv_upgrade(PL_bodytarget, SVt_PVFM);
3287 sv_setpvn(PL_bodytarget, "", 0);
3288 PL_formtarget = PL_bodytarget;
79072805 3289
bbce6d69 3290 TAINT;
155aba94 3291 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3292#ifdef MACOS_TRADITIONAL
3293 /* $0 is not majick on a Mac */
3294 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3295#else
3280af22 3296 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3297 magicname("0", "0", 1);
bf4acbe4 3298#endif
79072805 3299 }
155aba94 3300 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3301#ifdef OS2
23da6c43 3302 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3303#else
3280af22 3304 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3305#endif
155aba94 3306 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3307 GvMULTI_on(PL_argvgv);
3308 (void)gv_AVadd(PL_argvgv);
3309 av_clear(GvAVn(PL_argvgv));
79072805 3310 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3311 SV *sv = newSVpv(argv[0],0);
3312 av_push(GvAVn(PL_argvgv),sv);
3313 if (PL_widesyscalls)
e84ff256 3314 (void)sv_utf8_decode(sv);
79072805
LW
3315 }
3316 }
155aba94 3317 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3318 HV *hv;
3280af22
NIS
3319 GvMULTI_on(PL_envgv);
3320 hv = GvHVn(PL_envgv);
3321 hv_magic(hv, PL_envgv, 'E');
fa6a1c44 3322#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3323 /* Note that if the supplied env parameter is actually a copy
3324 of the global environ then it may now point to free'd memory
3325 if the environment has been modified since. To avoid this
3326 problem we treat env==NULL as meaning 'use the default'
3327 */
3328 if (!env)
3329 env = environ;
5aabfad6 3330 if (env != environ)
79072805 3331 environ[0] = Nullch;
103a7189
JH
3332#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3333 {
3334 char **env_base;
3335 for (env_base = env; *env; env++)
3336 dup_env_count++;
3337 if ((dup_env_base = (char **)
3338 safemalloc( sizeof(char *) * (dup_env_count+1) ))) {
3339 char **dup_env;
3340 for (env = env_base, dup_env = dup_env_base;
3341 *env;
3342 env++, dup_env++)
3343 *dup_env = savepv(*env);
3344 *dup_env = Nullch;
3345 env = dup_env_base;
3346 } /* else what? */
3347 }
3348#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3349 for (; *env; env++) {
93a17b20 3350 if (!(s = strchr(*env,'=')))
79072805
LW
3351 continue;
3352 *s++ = '\0';
60ce6247 3353#if defined(MSDOS)
137443ea
PP
3354 (void)strupr(*env);
3355#endif
79072805
LW
3356 sv = newSVpv(s--,0);
3357 (void)hv_store(hv, *env, s - *env, sv, 0);
3358 *s = '=';
3e3baf6d
TB
3359#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3360 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 3361 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 3362#endif
fe14fcc3 3363 }
103a7189
JH
3364 if (dup_env_base) {
3365 char **dup_env;
3366 for (dup_env = dup_env_base; *dup_env; dup_env++)
3367 Safefree(*dup_env);
3368 Safefree(dup_env_base);
3369 }
3370#endif /* USE_ENVIRON_ARRAY */
4550b24a
PP
3371#ifdef DYNAMIC_ENV_FETCH
3372 HvNAME(hv) = savepv(ENV_HV_NAME);
3373#endif
79072805 3374 }
bbce6d69 3375 TAINT_NOT;
155aba94 3376 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3377 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3378}
34de22dd 3379
76e3520e 3380STATIC void
cea2e8a9 3381S_init_perllib(pTHX)
34de22dd 3382{
85e6fe83 3383 char *s;
3280af22 3384 if (!PL_tainting) {
552a7a9b 3385#ifndef VMS
76e3520e 3386 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3387 if (s)
9c8a64f0 3388 incpush(s, TRUE, TRUE);
85e6fe83 3389 else
9c8a64f0 3390 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b
PP
3391#else /* VMS */
3392 /* Treat PERL5?LIB as a possible search list logical name -- the
3393 * "natural" VMS idiom for a Unix path string. We allow each
3394 * element to be a set of |-separated directories for compatibility.
3395 */
3396 char buf[256];
3397 int idx = 0;
3398 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3399 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3400 else
9c8a64f0 3401 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3402#endif /* VMS */
85e6fe83 3403 }
34de22dd 3404
c90c0ff4 3405/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3406 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3407*/
4633a7c4 3408#ifdef APPLLIB_EXP
9c8a64f0 3409 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3410#endif
4633a7c4 3411
fed7345c 3412#ifdef ARCHLIB_EXP
9c8a64f0 3413 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3414#endif
bf4acbe4
GS
3415#ifdef MACOS_TRADITIONAL
3416 {
3417 struct stat tmpstatbuf;
3418 SV * privdir = NEWSV(55, 0);
3419 char * macperl = PerlEnv_getenv("MACPERL");
3420
3421 if (!macperl)
3422 macperl = "";
3423
3424 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3425 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3426 incpush(SvPVX(privdir), TRUE, FALSE);
3427 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3428 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3429 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3430
bf4acbe4
GS
3431 SvREFCNT_dec(privdir);
3432 }
3433 if (!PL_tainting)
3434 incpush(":", FALSE, FALSE);
3435#else
fed7345c 3436#ifndef PRIVLIB_EXP
65f19062 3437# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3438#endif
ac27b0f5 3439#if defined(WIN32)
9c8a64f0 3440 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3441#else
9c8a64f0 3442 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3443#endif
4633a7c4 3444
65f19062 3445#ifdef SITEARCH_EXP
3b290362
GS
3446 /* sitearch is always relative to sitelib on Windows for
3447 * DLL-based path intuition to work correctly */
3448# if !defined(WIN32)
9c8a64f0 3449 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS
3450# endif
3451#endif
3452
4633a7c4 3453#ifdef SITELIB_EXP
65f19062 3454# if defined(WIN32)
9c8a64f0 3455 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3456# else