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a0d0e21e
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1/* perl.c
2 *
3818b22b 3 * Copyright (c) 1987-2000 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
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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
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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
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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
d33b2eba 476 Safefree(PL_ofs); /* $, */
3280af22 477 PL_ofs = Nullch;
5f05dabc 478
d33b2eba 479 Safefree(PL_ors); /* $\ */
3280af22 480 PL_ors = Nullch;
8ebc5c01 481
3280af22
NIS
482 SvREFCNT_dec(PL_rs); /* $/ */
483 PL_rs = Nullsv;
dc92893f 484
3280af22
NIS
485 SvREFCNT_dec(PL_nrs); /* $/ helper */
486 PL_nrs = Nullsv;
5f05dabc 487
d33b2eba
GS
488 PL_multiline = 0; /* $* */
489 Safefree(PL_osname); /* $^O */
490 PL_osname = Nullch;
5f05dabc 491
3280af22
NIS
492 SvREFCNT_dec(PL_statname);
493 PL_statname = Nullsv;
494 PL_statgv = Nullgv;
5f05dabc 495
8ebc5c01
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;
b9582b6a 565#endif
d33b2eba 566
5c831c24
GS
567 /* clear utf8 character classes */
568 SvREFCNT_dec(PL_utf8_alnum);
569 SvREFCNT_dec(PL_utf8_alnumc);
570 SvREFCNT_dec(PL_utf8_ascii);
571 SvREFCNT_dec(PL_utf8_alpha);
572 SvREFCNT_dec(PL_utf8_space);
573 SvREFCNT_dec(PL_utf8_cntrl);
574 SvREFCNT_dec(PL_utf8_graph);
575 SvREFCNT_dec(PL_utf8_digit);
576 SvREFCNT_dec(PL_utf8_upper);
577 SvREFCNT_dec(PL_utf8_lower);
578 SvREFCNT_dec(PL_utf8_print);
579 SvREFCNT_dec(PL_utf8_punct);
580 SvREFCNT_dec(PL_utf8_xdigit);
581 SvREFCNT_dec(PL_utf8_mark);
582 SvREFCNT_dec(PL_utf8_toupper);
583 SvREFCNT_dec(PL_utf8_tolower);
584 PL_utf8_alnum = Nullsv;
585 PL_utf8_alnumc = Nullsv;
586 PL_utf8_ascii = Nullsv;
587 PL_utf8_alpha = Nullsv;
588 PL_utf8_space = Nullsv;
589 PL_utf8_cntrl = Nullsv;
590 PL_utf8_graph = Nullsv;
591 PL_utf8_digit = Nullsv;
592 PL_utf8_upper = Nullsv;
593 PL_utf8_lower = Nullsv;
594 PL_utf8_print = Nullsv;
595 PL_utf8_punct = Nullsv;
596 PL_utf8_xdigit = Nullsv;
597 PL_utf8_mark = Nullsv;
598 PL_utf8_toupper = Nullsv;
599 PL_utf8_totitle = Nullsv;
600 PL_utf8_tolower = Nullsv;
601
971a9dd3
GS
602 if (!specialWARN(PL_compiling.cop_warnings))
603 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 604 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
605 if (!specialCopIO(PL_compiling.cop_io))
606 SvREFCNT_dec(PL_compiling.cop_io);
607 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
608#ifdef USE_ITHREADS
609 Safefree(CopFILE(&PL_compiling));
610 CopFILE(&PL_compiling) = Nullch;
611 Safefree(CopSTASHPV(&PL_compiling));
612#else
01724ea0 613 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
614 CopFILEGV(&PL_compiling) = Nullgv;
615 /* cop_stash is not refcounted */
01724ea0 616#endif
5c831c24 617
a0d0e21e 618 /* Prepare to destruct main symbol table. */
5f05dabc 619
3280af22
NIS
620 hv = PL_defstash;
621 PL_defstash = 0;
a0d0e21e 622 SvREFCNT_dec(hv);
5c831c24
GS
623 SvREFCNT_dec(PL_curstname);
624 PL_curstname = Nullsv;
a0d0e21e 625
5a844595
GS
626 /* clear queued errors */
627 SvREFCNT_dec(PL_errors);
628 PL_errors = Nullsv;
629
a0d0e21e 630 FREETMPS;
0453d815 631 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 632 if (PL_scopestack_ix != 0)
0453d815
PM
633 Perl_warner(aTHX_ WARN_INTERNAL,
634 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
635 (long)PL_scopestack_ix);
636 if (PL_savestack_ix != 0)
0453d815
PM
637 Perl_warner(aTHX_ WARN_INTERNAL,
638 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
639 (long)PL_savestack_ix);
640 if (PL_tmps_floor != -1)
0453d815 641 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 642 (long)PL_tmps_floor + 1);
a0d0e21e 643 if (cxstack_ix != -1)
0453d815 644 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 645 (long)cxstack_ix + 1);
a0d0e21e 646 }
8990e307
LW
647
648 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 649 last_sv_count = 0;
d33b2eba 650 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS
651 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
652 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
653 last_sv_count = PL_sv_count;
8990e307
LW
654 sv_clean_all();
655 }
d33b2eba
GS
656 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
657 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
658 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
659 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 660
d4777f27
GS
661 AvREAL_off(PL_fdpid); /* no surviving entries */
662 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
663 PL_fdpid = Nullav;
664
6c644e78
GS
665#ifdef HAVE_INTERP_INTERN
666 sys_intern_clear();
667#endif
668
6e72f9df
PP
669 /* Destruct the global string table. */
670 {
671 /* Yell and reset the HeVAL() slots that are still holding refcounts,
672 * so that sv_free() won't fail on them.
673 */
674 I32 riter;
675 I32 max;
676 HE *hent;
677 HE **array;
678
679 riter = 0;
3280af22
NIS
680 max = HvMAX(PL_strtab);
681 array = HvARRAY(PL_strtab);
6e72f9df
PP
682 hent = array[0];
683 for (;;) {
0453d815
PM
684 if (hent && ckWARN_d(WARN_INTERNAL)) {
685 Perl_warner(aTHX_ WARN_INTERNAL,
686 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
687 HeVAL(hent) - Nullsv, HeKEY(hent));
688 HeVAL(hent) = Nullsv;
689 hent = HeNEXT(hent);
690 }
691 if (!hent) {
692 if (++riter > max)
693 break;
694 hent = array[riter];
695 }
696 }
697 }
3280af22 698 SvREFCNT_dec(PL_strtab);
6e72f9df 699
d33b2eba
GS
700 /* free special SVs */
701
702 SvREFCNT(&PL_sv_yes) = 0;
703 sv_clear(&PL_sv_yes);
704 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 705 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
706
707 SvREFCNT(&PL_sv_no) = 0;
708 sv_clear(&PL_sv_no);
709 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 710 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
711
712 SvREFCNT(&PL_sv_undef) = 0;
713 SvREADONLY_off(&PL_sv_undef);
d33b2eba 714
0453d815
PM
715 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
716 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 717
3280af22 718 Safefree(PL_origfilename);
3280af22 719 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
720 if (PL_reg_curpm)
721 Safefree(PL_reg_curpm);
82ba1be6 722 Safefree(PL_reg_poscache);
3280af22
NIS
723 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
724 Safefree(PL_op_mask);
cf36064f
GS
725 Safefree(PL_psig_ptr);
726 Safefree(PL_psig_name);
6e72f9df 727 nuke_stacks();
3280af22 728 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 729
a0d0e21e 730 DEBUG_P(debprofdump());
11343788 731#ifdef USE_THREADS
5f08fbcd 732 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
733 MUTEX_DESTROY(&PL_sv_mutex);
734 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 735 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 736 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 737 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
738#ifdef EMULATE_ATOMIC_REFCOUNTS
739 MUTEX_DESTROY(&PL_svref_mutex);
740#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 741
8023c3ce 742 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
743 Safefree(SvPVX(PL_thrsv));
744 Safefree(SvANY(PL_thrsv));
745 Safefree(PL_thrsv);
746 PL_thrsv = Nullsv;
8023c3ce 747#endif /* USE_THREADS */
d33b2eba 748
612f20c3
GS
749 sv_free_arenas();
750
fc36a67e
PP
751 /* As the absolutely last thing, free the non-arena SV for mess() */
752
3280af22 753 if (PL_mess_sv) {
9c63abab
GS
754 /* it could have accumulated taint magic */
755 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
756 MAGIC* mg;
757 MAGIC* moremagic;
758 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
759 moremagic = mg->mg_moremagic;
760 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
761 Safefree(mg->mg_ptr);
762 Safefree(mg);
763 }
764 }
fc36a67e 765 /* we know that type >= SVt_PV */
155aba94 766 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
767 Safefree(SvPVX(PL_mess_sv));
768 Safefree(SvANY(PL_mess_sv));
769 Safefree(PL_mess_sv);
770 PL_mess_sv = Nullsv;
fc36a67e 771 }
79072805
LW
772}
773
954c1994
GS
774/*
775=for apidoc perl_free
776
777Releases a Perl interpreter. See L<perlembed>.
778
779=cut
780*/
781
79072805 782void
0cb96387 783perl_free(pTHXx)
79072805 784{
c5be433b 785#if defined(PERL_OBJECT)
7f0d82f7 786 PerlMem_free(this);
76e3520e 787#else
ce3e5b80
NIS
788# if defined(WIN32)
789# if defined(PERL_IMPLICIT_SYS)
1c0ca838 790 void *host = w32_internal_host;
5f1a76d0 791 if (PerlProc_lasthost())
eadce870 792 PerlIO_cleanup();
7f0d82f7 793 PerlMem_free(aTHXx);
1c0ca838 794 win32_delete_internal_host(host);
ce3e5b80 795#else
eadce870 796 PerlIO_cleanup();
ce3e5b80
NIS
797 PerlMem_free(aTHXx);
798#endif
1c0ca838
GS
799# else
800 PerlMem_free(aTHXx);
801# endif
76e3520e 802#endif
79072805
LW
803}
804
4b556e6c 805void
864dbfa3 806Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 807{
3280af22
NIS
808 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
809 PL_exitlist[PL_exitlistlen].fn = fn;
810 PL_exitlist[PL_exitlistlen].ptr = ptr;
811 ++PL_exitlistlen;
4b556e6c
JD
812}
813
954c1994
GS
814/*
815=for apidoc perl_parse
816
817Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
818
819=cut
820*/
821
79072805 822int
0cb96387 823perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 824{
6224f72b 825 I32 oldscope;
6224f72b 826 int ret;
db36c5a1 827 dJMPENV;
cea2e8a9
GS
828#ifdef USE_THREADS
829 dTHX;
830#endif
8d063cd8 831
a687059c
LW
832#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
833#ifdef IAMSUID
834#undef IAMSUID
cea2e8a9 835 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
836setuid perl scripts securely.\n");
837#endif
838#endif
839
8f1f23e8 840#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
841 _dyld_lookup_and_bind
842 ("__environ", (unsigned long *) &environ_pointer, NULL);
843#endif /* environ */
844
3280af22
NIS
845 PL_origargv = argv;
846 PL_origargc = argc;
fa6a1c44 847#ifdef USE_ENVIRON_ARRAY
3280af22 848 PL_origenviron = environ;
a0d0e21e
LW
849#endif
850
3280af22 851 if (PL_do_undump) {
a0d0e21e
LW
852
853 /* Come here if running an undumped a.out. */
854
3280af22
NIS
855 PL_origfilename = savepv(argv[0]);
856 PL_do_undump = FALSE;
a0d0e21e 857 cxstack_ix = -1; /* start label stack again */
748a9306 858 init_ids();
a0d0e21e
LW
859 init_postdump_symbols(argc,argv,env);
860 return 0;
861 }
862
3280af22
NIS
863 if (PL_main_root) {
864 PL_curpad = AvARRAY(PL_comppad);
865 op_free(PL_main_root);
866 PL_main_root = Nullop;
ff0cee69 867 }
3280af22
NIS
868 PL_main_start = Nullop;
869 SvREFCNT_dec(PL_main_cv);
870 PL_main_cv = Nullcv;
79072805 871
3280af22
NIS
872 time(&PL_basetime);
873 oldscope = PL_scopestack_ix;
599cee73 874 PL_dowarn = G_WARN_OFF;
f86702cc 875
14dd3ad8
GS
876#ifdef PERL_FLEXIBLE_EXCEPTIONS
877 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
878#else
879 JMPENV_PUSH(ret);
880#endif
6224f72b 881 switch (ret) {
312caa8e 882 case 0:
14dd3ad8
GS
883#ifndef PERL_FLEXIBLE_EXCEPTIONS
884 parse_body(env,xsinit);
885#endif
7d30b5c4
GS
886 if (PL_checkav)
887 call_list(oldscope, PL_checkav);
14dd3ad8
GS
888 ret = 0;
889 break;
6224f72b
GS
890 case 1:
891 STATUS_ALL_FAILURE;
892 /* FALL THROUGH */
893 case 2:
894 /* my_exit() was called */
3280af22 895 while (PL_scopestack_ix > oldscope)
6224f72b
GS
896 LEAVE;
897 FREETMPS;
3280af22 898 PL_curstash = PL_defstash;
7d30b5c4
GS
899 if (PL_checkav)
900 call_list(oldscope, PL_checkav);
14dd3ad8
GS
901 ret = STATUS_NATIVE_EXPORT;
902 break;
6224f72b 903 case 3:
bf49b057 904 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
905 ret = 1;
906 break;
6224f72b 907 }
14dd3ad8
GS
908 JMPENV_POP;
909 return ret;
910}
911
912#ifdef PERL_FLEXIBLE_EXCEPTIONS
913STATIC void *
914S_vparse_body(pTHX_ va_list args)
915{
916 char **env = va_arg(args, char**);
917 XSINIT_t xsinit = va_arg(args, XSINIT_t);
918
919 return parse_body(env, xsinit);
312caa8e 920}
14dd3ad8 921#endif
312caa8e
CS
922
923STATIC void *
14dd3ad8 924S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 925{
312caa8e
CS
926 int argc = PL_origargc;
927 char **argv = PL_origargv;
312caa8e
CS
928 char *scriptname = NULL;
929 int fdscript = -1;
930 VOL bool dosearch = FALSE;
931 char *validarg = "";
932 AV* comppadlist;
933 register SV *sv;
934 register char *s;
f4c556ac 935 char *cddir = Nullch;
312caa8e 936
3280af22 937 sv_setpvn(PL_linestr,"",0);
79cb57f6 938 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
939 SAVEFREESV(sv);
940 init_main_stash();
54310121 941
6224f72b
GS
942 for (argc--,argv++; argc > 0; argc--,argv++) {
943 if (argv[0][0] != '-' || !argv[0][1])
944 break;
945#ifdef DOSUID
946 if (*validarg)
947 validarg = " PHOOEY ";
948 else
949 validarg = argv[0];
13281fa4 950#endif
6224f72b
GS
951 s = argv[0]+1;
952 reswitch:
953 switch (*s) {
729a02f2
GS
954 case 'C':
955#ifdef WIN32
c0932edc 956 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
957 /* FALL THROUGH */
958#endif
1d5472a9
GS
959#ifndef PERL_STRICT_CR
960 case '\r':
961#endif
6224f72b
GS
962 case ' ':
963 case '0':
964 case 'F':
965 case 'a':
966 case 'c':
967 case 'd':
968 case 'D':
969 case 'h':
970 case 'i':
971 case 'l':
972 case 'M':
973 case 'm':
974 case 'n':
975 case 'p':
976 case 's':
977 case 'u':
978 case 'U':
979 case 'v':
599cee73
PM
980 case 'W':
981 case 'X':
6224f72b 982 case 'w':
155aba94 983 if ((s = moreswitches(s)))
6224f72b
GS
984 goto reswitch;
985 break;
33b78306 986
6224f72b 987 case 'T':
3280af22 988 PL_tainting = TRUE;
6224f72b
GS
989 s++;
990 goto reswitch;
f86702cc 991
6224f72b 992 case 'e':
bf4acbe4
GS
993#ifdef MACOS_TRADITIONAL
994 /* ignore -e for Dev:Pseudo argument */
995 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 996 break;
bf4acbe4 997#endif
3280af22 998 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 999 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1000 if (!PL_e_script) {
79cb57f6 1001 PL_e_script = newSVpvn("",0);
0cb96387 1002 filter_add(read_e_script, NULL);
6224f72b
GS
1003 }
1004 if (*++s)
3280af22 1005 sv_catpv(PL_e_script, s);
6224f72b 1006 else if (argv[1]) {
3280af22 1007 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1008 argc--,argv++;
1009 }
1010 else
cea2e8a9 1011 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1012 sv_catpv(PL_e_script, "\n");
6224f72b 1013 break;
afe37c7d 1014
6224f72b
GS
1015 case 'I': /* -I handled both here and in moreswitches() */
1016 forbid_setid("-I");
1017 if (!*++s && (s=argv[1]) != Nullch) {
1018 argc--,argv++;
1019 }
6224f72b 1020 if (s && *s) {
0df16ed7
GS
1021 char *p;
1022 STRLEN len = strlen(s);
1023 p = savepvn(s, len);
9c8a64f0 1024 incpush(p, TRUE, TRUE);
0df16ed7
GS
1025 sv_catpvn(sv, "-I", 2);
1026 sv_catpvn(sv, p, len);
1027 sv_catpvn(sv, " ", 1);
6224f72b 1028 Safefree(p);
0df16ed7
GS
1029 }
1030 else
a67e862a 1031 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1032 break;
1033 case 'P':
1034 forbid_setid("-P");
3280af22 1035 PL_preprocess = TRUE;
6224f72b
GS
1036 s++;
1037 goto reswitch;
1038 case 'S':
1039 forbid_setid("-S");
1040 dosearch = TRUE;
1041 s++;
1042 goto reswitch;
1043 case 'V':
3280af22
NIS
1044 if (!PL_preambleav)
1045 PL_preambleav = newAV();
1046 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1047 if (*++s != ':') {
3280af22 1048 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1049#ifdef VMS
6b88bc9c 1050 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1051#else
3280af22 1052 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1053#endif
3280af22 1054 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1055# ifdef DEBUGGING
3280af22 1056 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1057# endif
6224f72b 1058# ifdef MULTIPLICITY
8f872242 1059 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1060# endif
b363f7ed
GS
1061# ifdef USE_THREADS
1062 sv_catpv(PL_Sv," USE_THREADS");
1063# endif
ac5e8965
JH
1064# ifdef USE_ITHREADS
1065 sv_catpv(PL_Sv," USE_ITHREADS");
1066# endif
10cc9d2a
JH
1067# ifdef USE_64_BIT_INT
1068 sv_catpv(PL_Sv," USE_64_BIT_INT");
1069# endif
1070# ifdef USE_64_BIT_ALL
1071 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1072# endif
1073# ifdef USE_LONG_DOUBLE
1074 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1075# endif
53430762
JH
1076# ifdef USE_LARGE_FILES
1077 sv_catpv(PL_Sv," USE_LARGE_FILES");
1078# endif
ac5e8965
JH
1079# ifdef USE_SOCKS
1080 sv_catpv(PL_Sv," USE_SOCKS");
1081# endif
b363f7ed
GS
1082# ifdef PERL_OBJECT
1083 sv_catpv(PL_Sv," PERL_OBJECT");
1084# endif
1085# ifdef PERL_IMPLICIT_CONTEXT
1086 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1087# endif
1088# ifdef PERL_IMPLICIT_SYS
1089 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1090# endif
3280af22 1091 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1092
6224f72b
GS
1093#if defined(LOCAL_PATCH_COUNT)
1094 if (LOCAL_PATCH_COUNT > 0) {
1095 int i;
3280af22 1096 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1097 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1098 if (PL_localpatches[i])
cea2e8a9 1099 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1100 }
1101 }
1102#endif
cea2e8a9 1103 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1104#ifdef __DATE__
1105# ifdef __TIME__
cea2e8a9 1106 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1107# else
cea2e8a9 1108 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1109# endif
1110#endif
3280af22 1111 sv_catpv(PL_Sv, "; \
6224f72b
GS
1112$\"=\"\\n \"; \
1113@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1114print \" \\%ENV:\\n @env\\n\" if @env; \
1115print \" \\@INC:\\n @INC\\n\";");
1116 }
1117 else {
3280af22
NIS
1118 PL_Sv = newSVpv("config_vars(qw(",0);
1119 sv_catpv(PL_Sv, ++s);
1120 sv_catpv(PL_Sv, "))");
6224f72b
GS
1121 s += strlen(s);
1122 }
3280af22 1123 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1124 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1125 goto reswitch;
1126 case 'x':
3280af22 1127 PL_doextract = TRUE;
6224f72b
GS
1128 s++;
1129 if (*s)
f4c556ac 1130 cddir = s;
6224f72b
GS
1131 break;
1132 case 0:
1133 break;
1134 case '-':
1135 if (!*++s || isSPACE(*s)) {
1136 argc--,argv++;
1137 goto switch_end;
1138 }
1139 /* catch use of gnu style long options */
1140 if (strEQ(s, "version")) {
1141 s = "v";
1142 goto reswitch;
1143 }
1144 if (strEQ(s, "help")) {
1145 s = "h";
1146 goto reswitch;
1147 }
1148 s--;
1149 /* FALL THROUGH */
1150 default:
cea2e8a9 1151 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1152 }
1153 }
6224f72b 1154 switch_end:
54310121 1155
f675dbe5
CB
1156 if (
1157#ifndef SECURE_INTERNAL_GETENV
1158 !PL_tainting &&
1159#endif
0df16ed7
GS
1160 (s = PerlEnv_getenv("PERL5OPT")))
1161 {
74288ac8
GS
1162 while (isSPACE(*s))
1163 s++;
1164 if (*s == '-' && *(s+1) == 'T')
1165 PL_tainting = TRUE;
1166 else {
1167 while (s && *s) {
1168 while (isSPACE(*s))
1169 s++;
1170 if (*s == '-') {
1171 s++;
1172 if (isSPACE(*s))
1173 continue;
1174 }
1175 if (!*s)
1176 break;
1177 if (!strchr("DIMUdmw", *s))
cea2e8a9 1178 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 1179 s = moreswitches(s);
6224f72b 1180 }
6224f72b
GS
1181 }
1182 }
a0d0e21e 1183
6224f72b
GS
1184 if (!scriptname)
1185 scriptname = argv[0];
3280af22 1186 if (PL_e_script) {
6224f72b
GS
1187 argc++,argv--;
1188 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1189 }
1190 else if (scriptname == Nullch) {
1191#ifdef MSDOS
1192 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1193 moreswitches("h");
1194#endif
1195 scriptname = "-";
1196 }
1197
1198 init_perllib();
1199
1200 open_script(scriptname,dosearch,sv,&fdscript);
1201
1202 validate_suid(validarg, scriptname,fdscript);
1203
64ca3a65 1204#ifndef PERL_MICRO
0b5b802d
GS
1205#if defined(SIGCHLD) || defined(SIGCLD)
1206 {
1207#ifndef SIGCHLD
1208# define SIGCHLD SIGCLD
1209#endif
1210 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1211 if (sigstate == SIG_IGN) {
1212 if (ckWARN(WARN_SIGNAL))
1213 Perl_warner(aTHX_ WARN_SIGNAL,
1214 "Can't ignore signal CHLD, forcing to default");
1215 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1216 }
1217 }
1218#endif
64ca3a65 1219#endif
0b5b802d 1220
bf4acbe4
GS
1221#ifdef MACOS_TRADITIONAL
1222 if (PL_doextract || gMacPerl_AlwaysExtract) {
1223#else
f4c556ac 1224 if (PL_doextract) {
bf4acbe4 1225#endif
6224f72b 1226 find_beginning();
f4c556ac
GS
1227 if (cddir && PerlDir_chdir(cddir) < 0)
1228 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1229
1230 }
6224f72b 1231
3280af22
NIS
1232 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1233 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1234 CvUNIQUE_on(PL_compcv);
1235
1236 PL_comppad = newAV();
1237 av_push(PL_comppad, Nullsv);
1238 PL_curpad = AvARRAY(PL_comppad);
1239 PL_comppad_name = newAV();
1240 PL_comppad_name_fill = 0;
1241 PL_min_intro_pending = 0;
1242 PL_padix = 0;
6224f72b 1243#ifdef USE_THREADS
79cb57f6 1244 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1245 PL_curpad[0] = (SV*)newAV();
1246 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1247 CvOWNER(PL_compcv) = 0;
1248 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1249 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1250#endif /* USE_THREADS */
1251
1252 comppadlist = newAV();
1253 AvREAL_off(comppadlist);
3280af22
NIS
1254 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1255 av_store(comppadlist, 1, (SV*)PL_comppad);
1256 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS
1257
1258 boot_core_UNIVERSAL();
9a34ef1d 1259#ifndef PERL_MICRO
09bef843 1260 boot_core_xsutils();
9a34ef1d 1261#endif
6224f72b
GS
1262
1263 if (xsinit)
0cb96387 1264 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1265#ifndef PERL_MICRO
ed79a026 1266#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1267 init_os_extras();
6224f72b 1268#endif
64ca3a65 1269#endif
6224f72b 1270
29209bc5 1271#ifdef USE_SOCKS
1b9c9cf5
DH
1272# ifdef HAS_SOCKS5_INIT
1273 socks5_init(argv[0]);
1274# else
29209bc5 1275 SOCKSinit(argv[0]);
1b9c9cf5 1276# endif
ac27b0f5 1277#endif
29209bc5 1278
6224f72b
GS
1279 init_predump_symbols();
1280 /* init_postdump_symbols not currently designed to be called */
1281 /* more than once (ENV isn't cleared first, for example) */
1282 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1283 if (!PL_do_undump)
6224f72b
GS
1284 init_postdump_symbols(argc,argv,env);
1285
1286 init_lexer();
1287
1288 /* now parse the script */
1289
1290 SETERRNO(0,SS$_NORMAL);
3280af22 1291 PL_error_count = 0;
bf4acbe4
GS
1292#ifdef MACOS_TRADITIONAL
1293 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1294 if (PL_minus_c)
1295 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1296 else {
1297 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1298 MacPerl_MPWFileName(PL_origfilename));
1299 }
1300 }
1301#else
3280af22
NIS
1302 if (yyparse() || PL_error_count) {
1303 if (PL_minus_c)
cea2e8a9 1304 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1305 else {
cea2e8a9 1306 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1307 PL_origfilename);
6224f72b
GS
1308 }
1309 }
bf4acbe4 1310#endif
57843af0 1311 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1312 PL_curstash = PL_defstash;
1313 PL_preprocess = FALSE;
1314 if (PL_e_script) {
1315 SvREFCNT_dec(PL_e_script);
1316 PL_e_script = Nullsv;
6224f72b
GS
1317 }
1318
1319 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1320 SvREFCNT_dec(PL_rs);
1321 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1322 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1323 if (PL_do_undump)
6224f72b
GS
1324 my_unexec();
1325
57843af0
GS
1326 if (isWARN_ONCE) {
1327 SAVECOPFILE(PL_curcop);
1328 SAVECOPLINE(PL_curcop);
3280af22 1329 gv_check(PL_defstash);
57843af0 1330 }
6224f72b
GS
1331
1332 LEAVE;
1333 FREETMPS;
1334
1335#ifdef MYMALLOC
1336 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1337 dump_mstats("after compilation:");
1338#endif
1339
1340 ENTER;
3280af22 1341 PL_restartop = 0;
312caa8e 1342 return NULL;
6224f72b
GS
1343}
1344
954c1994
GS
1345/*
1346=for apidoc perl_run
1347
1348Tells a Perl interpreter to run. See L<perlembed>.
1349
1350=cut
1351*/
1352
6224f72b 1353int
0cb96387 1354perl_run(pTHXx)
6224f72b 1355{
6224f72b 1356 I32 oldscope;
14dd3ad8 1357 int ret = 0;
db36c5a1 1358 dJMPENV;
cea2e8a9
GS
1359#ifdef USE_THREADS
1360 dTHX;
1361#endif
6224f72b 1362
3280af22 1363 oldscope = PL_scopestack_ix;
6224f72b 1364
14dd3ad8 1365#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1366 redo_body:
14dd3ad8
GS
1367 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1368#else
1369 JMPENV_PUSH(ret);
1370#endif
6224f72b
GS
1371 switch (ret) {
1372 case 1:
1373 cxstack_ix = -1; /* start context stack again */
312caa8e 1374 goto redo_body;
14dd3ad8
GS
1375 case 0: /* normal completion */
1376#ifndef PERL_FLEXIBLE_EXCEPTIONS
1377 redo_body:
1378 run_body(oldscope);
1379#endif
1380 /* FALL THROUGH */
1381 case 2: /* my_exit() */
3280af22 1382 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1383 LEAVE;
1384 FREETMPS;
3280af22 1385 PL_curstash = PL_defstash;
865be832 1386 if (PL_endav && !PL_minus_c)
3280af22 1387 call_list(oldscope, PL_endav);
6224f72b
GS
1388#ifdef MYMALLOC
1389 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1390 dump_mstats("after execution: ");
1391#endif
14dd3ad8
GS
1392 ret = STATUS_NATIVE_EXPORT;
1393 break;
6224f72b 1394 case 3:
312caa8e
CS
1395 if (PL_restartop) {
1396 POPSTACK_TO(PL_mainstack);
1397 goto redo_body;
6224f72b 1398 }
bf49b057 1399 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1400 FREETMPS;
14dd3ad8
GS
1401 ret = 1;
1402 break;
6224f72b
GS
1403 }
1404
14dd3ad8
GS
1405 JMPENV_POP;
1406 return ret;
312caa8e
CS
1407}
1408
14dd3ad8 1409#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1410STATIC void *
14dd3ad8 1411S_vrun_body(pTHX_ va_list args)
312caa8e 1412{
312caa8e
CS
1413 I32 oldscope = va_arg(args, I32);
1414
14dd3ad8
GS
1415 return run_body(oldscope);
1416}
1417#endif
1418
1419
1420STATIC void *
1421S_run_body(pTHX_ I32 oldscope)
1422{
6224f72b 1423 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1424 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1425
3280af22 1426 if (!PL_restartop) {
6224f72b
GS
1427 DEBUG_x(dump_all());
1428 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1429 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1430 PTR2UV(thr)));
6224f72b 1431
3280af22 1432 if (PL_minus_c) {
bf4acbe4
GS
1433#ifdef MACOS_TRADITIONAL
1434 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1435#else
bf49b057 1436 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1437#endif
6224f72b
GS
1438 my_exit(0);
1439 }
3280af22 1440 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1441 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1442 if (PL_initav)
1443 call_list(oldscope, PL_initav);
6224f72b
GS
1444 }
1445
1446 /* do it */
1447
3280af22 1448 if (PL_restartop) {
533c011a 1449 PL_op = PL_restartop;
3280af22 1450 PL_restartop = 0;
cea2e8a9 1451 CALLRUNOPS(aTHX);
6224f72b 1452 }
3280af22
NIS
1453 else if (PL_main_start) {
1454 CvDEPTH(PL_main_cv) = 1;
533c011a 1455 PL_op = PL_main_start;
cea2e8a9 1456 CALLRUNOPS(aTHX);
6224f72b
GS
1457 }
1458
f6b3007c
JH
1459 my_exit(0);
1460 /* NOTREACHED */
312caa8e 1461 return NULL;
6224f72b
GS
1462}
1463
954c1994
GS
1464/*
1465=for apidoc p||get_sv
1466
1467Returns the SV of the specified Perl scalar. If C<create> is set and the
1468Perl variable does not exist then it will be created. If C<create> is not
1469set and the variable does not exist then NULL is returned.
1470
1471=cut
1472*/
1473
6224f72b 1474SV*
864dbfa3 1475Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1476{
1477 GV *gv;
1478#ifdef USE_THREADS
1479 if (name[1] == '\0' && !isALPHA(name[0])) {
1480 PADOFFSET tmp = find_threadsv(name);
411caa50 1481 if (tmp != NOT_IN_PAD)
6224f72b 1482 return THREADSV(tmp);
6224f72b
GS
1483 }
1484#endif /* USE_THREADS */
1485 gv = gv_fetchpv(name, create, SVt_PV);
1486 if (gv)
1487 return GvSV(gv);
1488 return Nullsv;
1489}
1490
954c1994
GS
1491/*
1492=for apidoc p||get_av
1493
1494Returns the AV of the specified Perl array. If C<create> is set and the
1495Perl variable does not exist then it will be created. If C<create> is not
1496set and the variable does not exist then NULL is returned.
1497
1498=cut
1499*/
1500
6224f72b 1501AV*
864dbfa3 1502Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1503{
1504 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1505 if (create)
1506 return GvAVn(gv);
1507 if (gv)
1508 return GvAV(gv);
1509 return Nullav;
1510}
1511
954c1994
GS
1512/*
1513=for apidoc p||get_hv
1514
1515Returns the HV of the specified Perl hash. If C<create> is set and the
1516Perl variable does not exist then it will be created. If C<create> is not
1517set and the variable does not exist then NULL is returned.
1518
1519=cut
1520*/
1521
6224f72b 1522HV*
864dbfa3 1523Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1524{
a0d0e21e
LW
1525 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1526 if (create)
1527 return GvHVn(gv);
1528 if (gv)
1529 return GvHV(gv);
1530 return Nullhv;
1531}
1532
954c1994
GS
1533/*
1534=for apidoc p||get_cv
1535
1536Returns the CV of the specified Perl subroutine. If C<create> is set and
1537the Perl subroutine does not exist then it will be declared (which has the
1538same effect as saying C<sub name;>). If C<create> is not set and the
1539subroutine does not exist then NULL is returned.
1540
1541=cut
1542*/
1543
a0d0e21e 1544CV*
864dbfa3 1545Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1546{
1547 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1548 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1549 /* XXX this is probably not what they think they're getting.
1550 * It has the same effect as "sub name;", i.e. just a forward
1551 * declaration! */
8ebc5c01 1552 if (create && !GvCVu(gv))
774d564b 1553 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1554 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1555 Nullop,
a0d0e21e
LW
1556 Nullop);
1557 if (gv)
8ebc5c01 1558 return GvCVu(gv);
a0d0e21e
LW
1559 return Nullcv;
1560}
1561
79072805
LW
1562/* Be sure to refetch the stack pointer after calling these routines. */
1563
954c1994
GS
1564/*
1565=for apidoc p||call_argv
1566
1567Performs a callback to the specified Perl sub. See L<perlcall>.
1568
1569=cut
1570*/
1571
a0d0e21e 1572I32
864dbfa3 1573Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1574
8ac85365
NIS
1575 /* See G_* flags in cop.h */
1576 /* null terminated arg list */
8990e307 1577{
a0d0e21e 1578 dSP;
8990e307 1579
924508f0 1580 PUSHMARK(SP);
a0d0e21e 1581 if (argv) {
8990e307 1582 while (*argv) {
a0d0e21e 1583 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1584 argv++;
1585 }
a0d0e21e 1586 PUTBACK;
8990e307 1587 }
864dbfa3 1588 return call_pv(sub_name, flags);
8990e307
LW
1589}
1590
954c1994
GS
1591/*
1592=for apidoc p||call_pv
1593
1594Performs a callback to the specified Perl sub. See L<perlcall>.
1595
1596=cut
1597*/
1598
a0d0e21e 1599I32
864dbfa3 1600Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1601 /* name of the subroutine */
1602 /* See G_* flags in cop.h */
a0d0e21e 1603{
864dbfa3 1604 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1605}
1606
954c1994
GS
1607/*
1608=for apidoc p||call_method
1609
1610Performs a callback to the specified Perl method. The blessed object must
1611be on the stack. See L<perlcall>.
1612
1613=cut
1614*/
1615
a0d0e21e 1616I32
864dbfa3 1617Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1618 /* name of the subroutine */
1619 /* See G_* flags in cop.h */
a0d0e21e 1620{
968b3946 1621 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1622}
1623
1624/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1625/*
1626=for apidoc p||call_sv
1627
1628Performs a callback to the Perl sub whose name is in the SV. See
1629L<perlcall>.
1630
1631=cut
1632*/
1633
a0d0e21e 1634I32
864dbfa3 1635Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1636 /* See G_* flags in cop.h */
a0d0e21e 1637{
924508f0 1638 dSP;
a0d0e21e 1639 LOGOP myop; /* fake syntax tree node */
968b3946 1640 UNOP method_op;
aa689395 1641 I32 oldmark;
a0d0e21e 1642 I32 retval;
a0d0e21e 1643 I32 oldscope;
54310121 1644 bool oldcatch = CATCH_GET;
6224f72b 1645 int ret;
533c011a 1646 OP* oldop = PL_op;
db36c5a1 1647 dJMPENV;
1e422769 1648
a0d0e21e
LW
1649 if (flags & G_DISCARD) {
1650 ENTER;
1651 SAVETMPS;
1652 }
1653
aa689395 1654 Zero(&myop, 1, LOGOP);
54310121 1655 myop.op_next = Nullop;
f51d4af5 1656 if (!(flags & G_NOARGS))
aa689395 1657 myop.op_flags |= OPf_STACKED;
54310121
PP
1658 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1659 (flags & G_ARRAY) ? OPf_WANT_LIST :
1660 OPf_WANT_SCALAR);
462e5cf6 1661 SAVEOP();
533c011a 1662 PL_op = (OP*)&myop;
aa689395 1663
3280af22
NIS
1664 EXTEND(PL_stack_sp, 1);
1665 *++PL_stack_sp = sv;
aa689395 1666 oldmark = TOPMARK;
3280af22 1667 oldscope = PL_scopestack_ix;
a0d0e21e 1668
3280af22 1669 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1670 /* Handle first BEGIN of -d. */
3280af22 1671 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1672 /* Try harder, since this may have been a sighandler, thus
1673 * curstash may be meaningless. */
3280af22 1674 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1675 && !(flags & G_NODEBUG))
533c011a 1676 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1677
968b3946
GS
1678 if (flags & G_METHOD) {
1679 Zero(&method_op, 1, UNOP);
1680 method_op.op_next = PL_op;
1681 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1682 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1683 PL_op = (OP*)&method_op;
968b3946
GS
1684 }
1685
312caa8e 1686 if (!(flags & G_EVAL)) {
0cdb2077 1687 CATCH_SET(TRUE);
14dd3ad8 1688 call_body((OP*)&myop, FALSE);
312caa8e 1689 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1690 CATCH_SET(oldcatch);
312caa8e
CS
1691 }
1692 else {
d78bda3d 1693 myop.op_other = (OP*)&myop;
3280af22 1694 PL_markstack_ptr--;
4633a7c4
LW
1695 /* we're trying to emulate pp_entertry() here */
1696 {
c09156bb 1697 register PERL_CONTEXT *cx;
54310121 1698 I32 gimme = GIMME_V;
ac27b0f5 1699
4633a7c4
LW
1700 ENTER;
1701 SAVETMPS;
ac27b0f5 1702
968b3946 1703 push_return(Nullop);
1d76a5c3 1704 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1705 PUSHEVAL(cx, 0, 0);
533c011a 1706 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1707
faef0170 1708 PL_in_eval = EVAL_INEVAL;
4633a7c4 1709 if (flags & G_KEEPERR)
faef0170 1710 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1711 else
38a03e6e 1712 sv_setpv(ERRSV,"");
4633a7c4 1713 }
3280af22 1714 PL_markstack_ptr++;
a0d0e21e 1715
14dd3ad8
GS
1716#ifdef PERL_FLEXIBLE_EXCEPTIONS
1717 redo_body:
1718 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1719 (OP*)&myop, FALSE);
14dd3ad8
GS
1720#else
1721 JMPENV_PUSH(ret);
1722#endif
6224f72b
GS
1723 switch (ret) {
1724 case 0:
14dd3ad8
GS
1725#ifndef PERL_FLEXIBLE_EXCEPTIONS
1726 redo_body:
1727 call_body((OP*)&myop, FALSE);
1728#endif
312caa8e
CS
1729 retval = PL_stack_sp - (PL_stack_base + oldmark);
1730 if (!(flags & G_KEEPERR))
1731 sv_setpv(ERRSV,"");
a0d0e21e 1732 break;
6224f72b 1733 case 1:
f86702cc 1734 STATUS_ALL_FAILURE;
a0d0e21e 1735 /* FALL THROUGH */
6224f72b 1736 case 2:
a0d0e21e 1737 /* my_exit() was called */
3280af22 1738 PL_curstash = PL_defstash;
a0d0e21e 1739 FREETMPS;
14dd3ad8 1740 JMPENV_POP;
cc3604b1 1741 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1742 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1743 my_exit_jump();
a0d0e21e 1744 /* NOTREACHED */
6224f72b 1745 case 3:
3280af22 1746 if (PL_restartop) {
533c011a 1747 PL_op = PL_restartop;
3280af22 1748 PL_restartop = 0;
312caa8e 1749 goto redo_body;
a0d0e21e 1750 }
3280af22 1751 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1752 if (flags & G_ARRAY)
1753 retval = 0;
1754 else {
1755 retval = 1;
3280af22 1756 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1757 }
312caa8e 1758 break;
a0d0e21e 1759 }
a0d0e21e 1760
3280af22 1761 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1762 SV **newsp;
1763 PMOP *newpm;
1764 I32 gimme;
c09156bb 1765 register PERL_CONTEXT *cx;
a0a2876f
LW
1766 I32 optype;
1767
1768 POPBLOCK(cx,newpm);
1769 POPEVAL(cx);
1770 pop_return();
3280af22 1771 PL_curpm = newpm;
a0a2876f 1772 LEAVE;
a0d0e21e 1773 }
14dd3ad8 1774 JMPENV_POP;
a0d0e21e 1775 }
1e422769 1776
a0d0e21e 1777 if (flags & G_DISCARD) {
3280af22 1778 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1779 retval = 0;
1780 FREETMPS;
1781 LEAVE;
1782 }
533c011a 1783 PL_op = oldop;
a0d0e21e
LW
1784 return retval;
1785}
1786
14dd3ad8 1787#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1788STATIC void *
14dd3ad8 1789S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1790{
1791 OP *myop = va_arg(args, OP*);
1792 int is_eval = va_arg(args, int);
1793
14dd3ad8 1794 call_body(myop, is_eval);
312caa8e
CS
1795 return NULL;
1796}
14dd3ad8 1797#endif
312caa8e
CS
1798
1799STATIC void
14dd3ad8 1800S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1801{
312caa8e
CS
1802 if (PL_op == myop) {
1803 if (is_eval)
f807eda9 1804 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1805 else
f807eda9 1806 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1807 }
1808 if (PL_op)
cea2e8a9 1809 CALLRUNOPS(aTHX);
312caa8e
CS
1810}
1811
6e72f9df 1812/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1813
954c1994
GS
1814/*
1815=for apidoc p||eval_sv
1816
1817Tells Perl to C<eval> the string in the SV.
1818
1819=cut
1820*/
1821
a0d0e21e 1822I32
864dbfa3 1823Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1824
8ac85365 1825 /* See G_* flags in cop.h */
a0d0e21e 1826{
924508f0 1827 dSP;
a0d0e21e 1828 UNOP myop; /* fake syntax tree node */
3280af22 1829 I32 oldmark = SP - PL_stack_base;
4633a7c4 1830 I32 retval;
4633a7c4 1831 I32 oldscope;
6224f72b 1832 int ret;
533c011a 1833 OP* oldop = PL_op;
db36c5a1 1834 dJMPENV;
84902520 1835
4633a7c4
LW
1836 if (flags & G_DISCARD) {
1837 ENTER;
1838 SAVETMPS;
1839 }
1840
462e5cf6 1841 SAVEOP();
533c011a
NIS
1842 PL_op = (OP*)&myop;
1843 Zero(PL_op, 1, UNOP);
3280af22
NIS
1844 EXTEND(PL_stack_sp, 1);
1845 *++PL_stack_sp = sv;
1846 oldscope = PL_scopestack_ix;
79072805 1847
4633a7c4
LW
1848 if (!(flags & G_NOARGS))
1849 myop.op_flags = OPf_STACKED;
79072805 1850 myop.op_next = Nullop;
6e72f9df 1851 myop.op_type = OP_ENTEREVAL;
54310121
PP
1852 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1853 (flags & G_ARRAY) ? OPf_WANT_LIST :
1854 OPf_WANT_SCALAR);
6e72f9df
PP
1855 if (flags & G_KEEPERR)
1856 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1857
14dd3ad8 1858#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1859 redo_body:
14dd3ad8 1860 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1861 (OP*)&myop, TRUE);
14dd3ad8
GS
1862#else
1863 JMPENV_PUSH(ret);
1864#endif
6224f72b
GS
1865 switch (ret) {
1866 case 0:
14dd3ad8
GS
1867#ifndef PERL_FLEXIBLE_EXCEPTIONS
1868 redo_body:
1869 call_body((OP*)&myop,TRUE);
1870#endif
312caa8e
CS
1871 retval = PL_stack_sp - (PL_stack_base + oldmark);
1872 if (!(flags & G_KEEPERR))
1873 sv_setpv(ERRSV,"");
4633a7c4 1874 break;
6224f72b 1875 case 1:
f86702cc 1876 STATUS_ALL_FAILURE;
4633a7c4 1877 /* FALL THROUGH */
6224f72b 1878 case 2:
4633a7c4 1879 /* my_exit() was called */
3280af22 1880 PL_curstash = PL_defstash;
4633a7c4 1881 FREETMPS;
14dd3ad8 1882 JMPENV_POP;
cc3604b1 1883 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1884 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1885 my_exit_jump();
4633a7c4 1886 /* NOTREACHED */
6224f72b 1887 case 3:
3280af22 1888 if (PL_restartop) {
533c011a 1889 PL_op = PL_restartop;
3280af22 1890 PL_restartop = 0;
312caa8e 1891 goto redo_body;
4633a7c4 1892 }
3280af22 1893 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1894 if (flags & G_ARRAY)
1895 retval = 0;
1896 else {
1897 retval = 1;
3280af22 1898 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1899 }
312caa8e 1900 break;
4633a7c4
LW
1901 }
1902
14dd3ad8 1903 JMPENV_POP;
4633a7c4 1904 if (flags & G_DISCARD) {
3280af22 1905 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1906 retval = 0;
1907 FREETMPS;
1908 LEAVE;
1909 }
533c011a 1910 PL_op = oldop;
4633a7c4
LW
1911 return retval;
1912}
1913
954c1994
GS
1914/*
1915=for apidoc p||eval_pv
1916
1917Tells Perl to C<eval> the given string and return an SV* result.
1918
1919=cut
1920*/
1921
137443ea 1922SV*
864dbfa3 1923Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
1924{
1925 dSP;
1926 SV* sv = newSVpv(p, 0);
1927
864dbfa3 1928 eval_sv(sv, G_SCALAR);
137443ea
PP
1929 SvREFCNT_dec(sv);
1930
1931 SPAGAIN;
1932 sv = POPs;
1933 PUTBACK;
1934
2d8e6c8d
GS
1935 if (croak_on_error && SvTRUE(ERRSV)) {
1936 STRLEN n_a;
cea2e8a9 1937 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1938 }
137443ea
PP
1939
1940 return sv;
1941}
1942
4633a7c4
LW
1943/* Require a module. */
1944
954c1994
GS
1945/*
1946=for apidoc p||require_pv
1947
1948Tells Perl to C<require> a module.
1949
1950=cut
1951*/
1952
4633a7c4 1953void
864dbfa3 1954Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1955{
d3acc0f7
JP
1956 SV* sv;
1957 dSP;
e788e7d3 1958 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
1959 PUTBACK;
1960 sv = sv_newmortal();
4633a7c4
LW
1961 sv_setpv(sv, "require '");
1962 sv_catpv(sv, pv);
1963 sv_catpv(sv, "'");
864dbfa3 1964 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
1965 SPAGAIN;
1966 POPSTACK;
79072805
LW
1967}
1968
79072805 1969void
864dbfa3 1970Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
1971{
1972 register GV *gv;
1973
155aba94 1974 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW
1975 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1976}
1977
76e3520e 1978STATIC void
cea2e8a9 1979S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 1980{
ab821d7f
PP
1981 /* This message really ought to be max 23 lines.
1982 * Removed -h because the user already knows that opton. Others? */
fb73857a 1983
76e3520e 1984 static char *usage_msg[] = {
fb73857a
PP
1985"-0[octal] specify record separator (\\0, if no argument)",
1986"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 1987"-C enable native wide character system interfaces",
1950ee41 1988"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
1989"-d[:debugger] run program under debugger",
1990"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1991"-e 'command' one line of program (several -e's allowed, omit programfile)",
1992"-F/pattern/ split() pattern for -a switch (//'s are optional)",
1993"-i[extension] edit <> files in place (makes backup if extension supplied)",
1994"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 1995"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
1996"-[mM][-]module execute `use/no module...' before executing program",
1997"-n assume 'while (<>) { ... }' loop around program",
1998"-p assume loop like -n but print line also, like sed",
1999"-P run program through C preprocessor before compilation",
2000"-s enable rudimentary parsing for switches after programfile",
2001"-S look for programfile using PATH environment variable",
2002"-T enable tainting checks",
2003"-u dump core after parsing program",
fb73857a 2004"-U allow unsafe operations",
aac3bd0d
GS
2005"-v print version, subversion (includes VERY IMPORTANT perl info)",
2006"-V[:variable] print configuration summary (or a single Config.pm variable)",
2007"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2008"-W enable all warnings",
2009"-X disable all warnings",
fb73857a
PP
2010"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2011"\n",
2012NULL
2013};
76e3520e 2014 char **p = usage_msg;
fb73857a 2015
b0e47665
GS
2016 PerlIO_printf(PerlIO_stdout(),
2017 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2018 name);
fb73857a 2019 while (*p)
b0e47665 2020 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2021}
2022
79072805
LW
2023/* This routine handles any switches that can be given during run */
2024
2025char *
864dbfa3 2026Perl_moreswitches(pTHX_ char *s)
79072805 2027{
ba210ebe 2028 STRLEN numlen;
c07a80fd 2029 U32 rschar;
79072805
LW
2030
2031 switch (*s) {
2032 case '0':
a863c7d1 2033 {
b21ed0a9 2034 numlen = 0; /* disallow underscores */
dff6d3cd 2035 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2036 SvREFCNT_dec(PL_nrs);
c07a80fd 2037 if (rschar & ~((U8)~0))
3280af22 2038 PL_nrs = &PL_sv_undef;
c07a80fd 2039 else if (!rschar && numlen >= 2)
79cb57f6 2040 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2041 else {
2042 char ch = rschar;
79cb57f6 2043 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2044 }
2045 return s + numlen;
a863c7d1 2046 }
46487f74
GS
2047 case 'C':
2048 PL_widesyscalls = TRUE;
2049 s++;
2050 return s;
2304df62 2051 case 'F':
3280af22
NIS
2052 PL_minus_F = TRUE;
2053 PL_splitstr = savepv(s + 1);
2304df62
AD
2054 s += strlen(s);
2055 return s;
79072805 2056 case 'a':
3280af22 2057 PL_minus_a = TRUE;
79072805
LW
2058 s++;
2059 return s;
2060 case 'c':
3280af22 2061 PL_minus_c = TRUE;
79072805
LW
2062 s++;
2063 return s;
2064 case 'd':
bbce6d69 2065 forbid_setid("-d");
4633a7c4 2066 s++;
70c94a19
RR
2067 /* The following permits -d:Mod to accepts arguments following an =
2068 in the fashion that -MSome::Mod does. */
2069 if (*s == ':' || *s == '=') {
2070 char *start;
2071 SV *sv;
2072 sv = newSVpv("use Devel::", 0);
2073 start = ++s;
2074 /* We now allow -d:Module=Foo,Bar */
2075 while(isALNUM(*s) || *s==':') ++s;
2076 if (*s != '=')
2077 sv_catpv(sv, start);
2078 else {
2079 sv_catpvn(sv, start, s-start);
2080 sv_catpv(sv, " split(/,/,q{");
2081 sv_catpv(sv, ++s);
2082 sv_catpv(sv, "})");
2083 }
4633a7c4 2084 s += strlen(s);
70c94a19 2085 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2086 }
ed094faf 2087 if (!PL_perldb) {
3280af22 2088 PL_perldb = PERLDB_ALL;
a0d0e21e 2089 init_debugger();
ed094faf 2090 }
79072805
LW
2091 return s;
2092 case 'D':
0453d815 2093 {
79072805 2094#ifdef DEBUGGING
bbce6d69 2095 forbid_setid("-D");
79072805 2096 if (isALPHA(s[1])) {
607df283 2097 static char debopts[] = "psltocPmfrxuLHXDST";
79072805
LW
2098 char *d;
2099
93a17b20 2100 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2101 PL_debug |= 1 << (d - debopts);
79072805
LW
2102 }
2103 else {
3280af22 2104 PL_debug = atoi(s+1);
79072805
LW
2105 for (s++; isDIGIT(*s); s++) ;
2106 }
3280af22 2107 PL_debug |= 0x80000000;
79072805 2108#else
0453d815
PM
2109 if (ckWARN_d(WARN_DEBUGGING))
2110 Perl_warner(aTHX_ WARN_DEBUGGING,
2111 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2112 for (s++; isALNUM(*s); s++) ;
79072805
LW
2113#endif
2114 /*SUPPRESS 530*/
2115 return s;
0453d815 2116 }
4633a7c4 2117 case 'h':
ac27b0f5 2118 usage(PL_origargv[0]);
6ad3d225 2119 PerlProc_exit(0);
79072805 2120 case 'i':
3280af22
NIS
2121 if (PL_inplace)
2122 Safefree(PL_inplace);
2123 PL_inplace = savepv(s+1);
79072805 2124 /*SUPPRESS 530*/
3280af22 2125 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2126 if (*s) {
fb73857a 2127 *s++ = '\0';
7b8d334a
GS
2128 if (*s == '-') /* Additional switches on #! line. */
2129 s++;
2130 }
fb73857a
PP
2131 return s;
2132 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2133 forbid_setid("-I");
fb73857a
PP
2134 ++s;
2135 while (*s && isSPACE(*s))
2136 ++s;
2137 if (*s) {
774d564b 2138 char *e, *p;
0df16ed7
GS
2139 p = s;
2140 /* ignore trailing spaces (possibly followed by other switches) */
2141 do {
2142 for (e = p; *e && !isSPACE(*e); e++) ;
2143 p = e;
2144 while (isSPACE(*p))
2145 p++;
2146 } while (*p && *p != '-');
2147 e = savepvn(s, e-s);
9c8a64f0 2148 incpush(e, TRUE, TRUE);
0df16ed7
GS
2149 Safefree(e);
2150 s = p;
2151 if (*s == '-')
2152 s++;
79072805
LW
2153 }
2154 else
a67e862a 2155 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2156 return s;
79072805 2157 case 'l':
3280af22 2158 PL_minus_l = TRUE;
79072805 2159 s++;
3280af22
NIS
2160 if (PL_ors)
2161 Safefree(PL_ors);
79072805 2162 if (isDIGIT(*s)) {
3280af22
NIS
2163 PL_ors = savepv("\n");
2164 PL_orslen = 1;
b21ed0a9 2165 numlen = 0; /* disallow underscores */
dff6d3cd 2166 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2167 s += numlen;
2168 }
2169 else {
3280af22
NIS
2170 if (RsPARA(PL_nrs)) {
2171 PL_ors = "\n\n";
2172 PL_orslen = 2;
c07a80fd
PP
2173 }
2174 else
3280af22
NIS
2175 PL_ors = SvPV(PL_nrs, PL_orslen);
2176 PL_ors = savepvn(PL_ors, PL_orslen);
79072805
LW
2177 }
2178 return s;
1a30305b 2179 case 'M':
bbce6d69 2180 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2181 /* FALL THROUGH */
2182 case 'm':
bbce6d69 2183 forbid_setid("-m"); /* XXX ? */
1a30305b 2184 if (*++s) {
a5f75d66 2185 char *start;
11343788 2186 SV *sv;
a5f75d66
AD
2187 char *use = "use ";
2188 /* -M-foo == 'no foo' */
2189 if (*s == '-') { use = "no "; ++s; }
11343788 2190 sv = newSVpv(use,0);
a5f75d66 2191 start = s;
1a30305b 2192 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2193 while(isALNUM(*s) || *s==':') ++s;
2194 if (*s != '=') {
11343788 2195 sv_catpv(sv, start);
c07a80fd
PP
2196 if (*(start-1) == 'm') {
2197 if (*s != '\0')
cea2e8a9 2198 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2199 sv_catpv( sv, " ()");
c07a80fd
PP
2200 }
2201 } else {
6df41af2 2202 if (s == start)
be98fb35
GS
2203 Perl_croak(aTHX_ "Module name required with -%c option",
2204 s[-1]);
11343788
MB
2205 sv_catpvn(sv, start, s-start);
2206 sv_catpv(sv, " split(/,/,q{");
2207 sv_catpv(sv, ++s);
2208 sv_catpv(sv, "})");
c07a80fd 2209 }
1a30305b 2210 s += strlen(s);
5c831c24 2211 if (!PL_preambleav)
3280af22
NIS
2212 PL_preambleav = newAV();
2213 av_push(PL_preambleav, sv);
1a30305b
PP
2214 }
2215 else
cea2e8a9 2216 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2217 return s;
79072805 2218 case 'n':
3280af22 2219 PL_minus_n = TRUE;
79072805
LW
2220 s++;
2221 return s;
2222 case 'p':
3280af22 2223 PL_minus_p = TRUE;
79072805
LW
2224 s++;
2225 return s;
2226 case 's':
bbce6d69 2227 forbid_setid("-s");
3280af22 2228 PL_doswitches = TRUE;
79072805
LW
2229 s++;
2230 return s;
463ee0b2 2231 case 'T':
3280af22 2232 if (!PL_tainting)
cea2e8a9 2233 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2234 s++;
2235 return s;
79072805 2236 case 'u':
bf4acbe4
GS
2237#ifdef MACOS_TRADITIONAL
2238 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2239#endif
3280af22 2240 PL_do_undump = TRUE;
79072805
LW
2241 s++;
2242 return s;
2243 case 'U':
3280af22 2244 PL_unsafe = TRUE;
79072805
LW
2245 s++;
2246 return s;
2247 case 'v':
b0e47665 2248 PerlIO_printf(PerlIO_stdout(),
d2560b70 2249 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2250 PL_patchlevel, ARCHNAME));
fb73857a
PP
2251#if defined(LOCAL_PATCH_COUNT)
2252 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2253 PerlIO_printf(PerlIO_stdout(),
2254 "\n(with %d registered patch%s, "
2255 "see perl -V for more detail)",
2256 (int)LOCAL_PATCH_COUNT,
2257 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2258#endif
1a30305b 2259
b0e47665
GS
2260 PerlIO_printf(PerlIO_stdout(),
2261 "\n\nCopyright 1987-2000, Larry Wall\n");
eae9c151
JH
2262#ifdef MACOS_TRADITIONAL
2263 PerlIO_printf(PerlIO_stdout(),
2264 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2265#endif
79072805 2266#ifdef MSDOS
b0e47665
GS
2267 PerlIO_printf(PerlIO_stdout(),
2268 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2269#endif
2270#ifdef DJGPP
b0e47665
GS
2271 PerlIO_printf(PerlIO_stdout(),
2272 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2273 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2274#endif
79072805 2275#ifdef OS2
b0e47665
GS
2276 PerlIO_printf(PerlIO_stdout(),
2277 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2278 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2279#endif
79072805 2280#ifdef atarist
b0e47665
GS
2281 PerlIO_printf(PerlIO_stdout(),
2282 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2283#endif
a3f9223b 2284#ifdef __BEOS__
b0e47665
GS
2285 PerlIO_printf(PerlIO_stdout(),
2286 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2287#endif
1d84e8df 2288#ifdef MPE
b0e47665
GS
2289 PerlIO_printf(PerlIO_stdout(),
2290 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2291#endif
9d116dd7 2292#ifdef OEMVS
b0e47665
GS
2293 PerlIO_printf(PerlIO_stdout(),
2294 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2295#endif
495c5fdc 2296#ifdef __VOS__
b0e47665
GS
2297 PerlIO_printf(PerlIO_stdout(),
2298 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2299#endif
092bebab 2300#ifdef __OPEN_VM
b0e47665
GS
2301 PerlIO_printf(PerlIO_stdout(),
2302 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2303#endif
a1a0e61e 2304#ifdef POSIX_BC
b0e47665
GS
2305 PerlIO_printf(PerlIO_stdout(),
2306 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2307#endif
61ae2fbf 2308#ifdef __MINT__
b0e47665
GS
2309 PerlIO_printf(PerlIO_stdout(),
2310 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2311#endif
f83d2536 2312#ifdef EPOC
b0e47665
GS
2313 PerlIO_printf(PerlIO_stdout(),
2314 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2315#endif
baed7233
DL
2316#ifdef BINARY_BUILD_NOTICE
2317 BINARY_BUILD_NOTICE;
2318#endif
b0e47665
GS
2319 PerlIO_printf(PerlIO_stdout(),
2320 "\n\
79072805 2321Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2322GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2323Complete documentation for Perl, including FAQ lists, should be found on\n\
2324this system using `man perl' or `perldoc perl'. If you have access to the\n\
2325Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2326 PerlProc_exit(0);
79072805 2327 case 'w':
599cee73 2328 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2329 PL_dowarn |= G_WARN_ON;
599cee73
PM
2330 s++;
2331 return s;
2332 case 'W':
ac27b0f5 2333 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2334 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2335 s++;
2336 return s;
2337 case 'X':
ac27b0f5 2338 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2339 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2340 s++;
2341 return s;
a0d0e21e 2342 case '*':
79072805
LW
2343 case ' ':
2344 if (s[1] == '-') /* Additional switches on #! line. */
2345 return s+2;
2346 break;
a0d0e21e 2347 case '-':
79072805 2348 case 0:
51882d45 2349#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2350 case '\r':
2351#endif
79072805
LW
2352 case '\n':
2353 case '\t':
2354 break;
aa689395
PP
2355#ifdef ALTERNATE_SHEBANG
2356 case 'S': /* OS/2 needs -S on "extproc" line. */
2357 break;
2358#endif
a0d0e21e 2359 case 'P':
3280af22 2360 if (PL_preprocess)
a0d0e21e
LW
2361 return s+1;
2362 /* FALL THROUGH */
79072805 2363 default:
cea2e8a9 2364 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2365 }
2366 return Nullch;
2367}
2368
2369/* compliments of Tom Christiansen */
2370
2371/* unexec() can be found in the Gnu emacs distribution */
ee580363 2372/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2373
2374void
864dbfa3 2375Perl_my_unexec(pTHX)
79072805
LW
2376{
2377#ifdef UNEXEC
46fc3d4c
PP
2378 SV* prog;
2379 SV* file;
ee580363 2380 int status = 1;
79072805
LW
2381 extern int etext;
2382
ee580363 2383 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2384 sv_catpv(prog, "/perl");
6b88bc9c 2385 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2386 sv_catpv(file, ".perldump");
79072805 2387
ee580363
GS
2388 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2389 /* unexec prints msg to stderr in case of failure */
6ad3d225 2390 PerlProc_exit(status);
79072805 2391#else
a5f75d66
AD
2392# ifdef VMS
2393# include <lib$routines.h>
2394 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2395# else
79072805 2396 ABORT(); /* for use with undump */
aa689395 2397# endif
a5f75d66 2398#endif
79072805
LW
2399}
2400
cb68f92d
GS
2401/* initialize curinterp */
2402STATIC void
cea2e8a9 2403S_init_interp(pTHX)
cb68f92d
GS
2404{
2405
066ef5b5 2406#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2407#define I_REINIT \
6b88bc9c
GS
2408 STMT_START { \
2409 PL_chopset = " \n-"; \
2410 PL_copline = NOLINE; \
2411 PL_curcop = &PL_compiling;\
2412 PL_curcopdb = NULL; \
2413 PL_dbargs = 0; \
3967c732 2414 PL_dumpindent = 4; \
6b88bc9c
GS
2415 PL_laststatval = -1; \
2416 PL_laststype = OP_STAT; \
2417 PL_maxscream = -1; \
2418 PL_maxsysfd = MAXSYSFD; \
2419 PL_statname = Nullsv; \
2420 PL_tmps_floor = -1; \
2421 PL_tmps_ix = -1; \
2422 PL_op_mask = NULL; \
6b88bc9c
GS
2423 PL_laststatval = -1; \
2424 PL_laststype = OP_STAT; \
2425 PL_mess_sv = Nullsv; \
2426 PL_splitstr = " "; \
2427 PL_generation = 100; \
2428 PL_exitlist = NULL; \
2429 PL_exitlistlen = 0; \
2430 PL_regindent = 0; \
2431 PL_in_clean_objs = FALSE; \
2432 PL_in_clean_all = FALSE; \
2433 PL_profiledata = NULL; \
2434 PL_rsfp = Nullfp; \
2435 PL_rsfp_filters = Nullav; \
24d3c518 2436 PL_dirty = FALSE; \
cb68f92d 2437 } STMT_END
9666903d 2438 I_REINIT;
066ef5b5
GS
2439#else
2440# ifdef MULTIPLICITY
2441# define PERLVAR(var,type)
51371543 2442# define PERLVARA(var,n,type)
cea2e8a9 2443# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2444# if defined(USE_THREADS)
2445# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2446# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2447# else /* !USE_THREADS */
2448# define PERLVARI(var,type,init) aTHX->var = init;
2449# define PERLVARIC(var,type,init) aTHX->var = init;
2450# endif /* USE_THREADS */
cea2e8a9 2451# else
c5be433b
GS
2452# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2453# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2454# endif
066ef5b5
GS
2455# include "intrpvar.h"
2456# ifndef USE_THREADS
2457# include "thrdvar.h"
2458# endif
2459# undef PERLVAR
51371543 2460# undef PERLVARA
066ef5b5
GS
2461# undef PERLVARI
2462# undef PERLVARIC
3967c732 2463# else
066ef5b5 2464# define PERLVAR(var,type)
51371543 2465# define PERLVARA(var,n,type)
533c011a
NIS
2466# define PERLVARI(var,type,init) PL_##var = init;
2467# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2468# include "intrpvar.h"
2469# ifndef USE_THREADS
2470# include "thrdvar.h"
2471# endif
2472# undef PERLVAR
51371543 2473# undef PERLVARA
066ef5b5
GS
2474# undef PERLVARI
2475# undef PERLVARIC
2476# endif
cb68f92d
GS
2477#endif
2478
cb68f92d
GS
2479}
2480
76e3520e 2481STATIC void
cea2e8a9 2482S_init_main_stash(pTHX)
79072805 2483{
463ee0b2 2484 GV *gv;
6e72f9df
PP
2485
2486 /* Note that strtab is a rather special HV. Assumptions are made
2487 about not iterating on it, and not adding tie magic to it.
2488 It is properly deallocated in perl_destruct() */
3280af22 2489 PL_strtab = newHV();
5f08fbcd
GS
2490#ifdef USE_THREADS
2491 MUTEX_INIT(&PL_strtab_mutex);
2492#endif
3280af22
NIS
2493 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2494 hv_ksplit(PL_strtab, 512);
ac27b0f5 2495
3280af22 2496 PL_curstash = PL_defstash = newHV();
79cb57f6 2497 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2498 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2499 SvREFCNT_dec(GvHV(gv));
3280af22 2500 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2501 SvREADONLY_on(gv);
3280af22
NIS
2502 HvNAME(PL_defstash) = savepv("main");
2503 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2504 GvMULTI_on(PL_incgv);
2505 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2506 GvMULTI_on(PL_hintgv);
2507 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2508 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2509 GvMULTI_on(PL_errgv);
2510 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2511 GvMULTI_on(PL_replgv);
cea2e8a9 2512 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2513 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2514 sv_setpvn(ERRSV, "", 0);
3280af22 2515 PL_curstash = PL_defstash;
11faa288 2516 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2517 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2518 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2519 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2520 /* We must init $/ before switches are processed. */
864dbfa3 2521 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2522}
2523
76e3520e 2524STATIC void
cea2e8a9 2525S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2526{
6c4ab083 2527 *fdscript = -1;
79072805 2528
3280af22
NIS
2529 if (PL_e_script) {
2530 PL_origfilename = savepv("-e");
96436eeb 2531 }
6c4ab083
GS
2532 else {
2533 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2534 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2535
2536 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2537 char *s = scriptname + 8;
2538 *fdscript = atoi(s);
2539 while (isDIGIT(*s))
2540 s++;
2541 if (*s) {
2542 scriptname = savepv(s + 1);
3280af22
NIS
2543 Safefree(PL_origfilename);
2544 PL_origfilename = scriptname;
6c4ab083
GS
2545 }
2546 }
2547 }
2548
f4dd75d9
GS
2549#ifdef USE_ITHREADS
2550 Safefree(CopFILE(PL_curcop));
2551#else
2552 SvREFCNT_dec(CopFILEGV(PL_curcop));
2553#endif
57843af0 2554 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2555 if (strEQ(PL_origfilename,"-"))
79072805 2556 scriptname = "";
01f988be 2557 if (*fdscript >= 0) {
3280af22 2558 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2559#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2560 if (PL_rsfp)
2561 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2562#endif
2563 }
3280af22 2564 else if (PL_preprocess) {
46fc3d4c 2565 char *cpp_cfg = CPPSTDIN;
79cb57f6 2566 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2567 SV *cmd = NEWSV(0,0);
2568
2569 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2570 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2571 sv_catpv(cpp, cpp_cfg);
79072805 2572
0df16ed7 2573 sv_catpvn(sv, "-I", 2);
fed7345c 2574 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2575
52853b95 2576#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2577 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2578sed %s -e \"/^[^#]/b\" \
2579 -e \"/^#[ ]*include[ ]/b\" \
2580 -e \"/^#[ ]*define[ ]/b\" \
2581 -e \"/^#[ ]*if[ ]/b\" \
2582 -e \"/^#[ ]*ifdef[ ]/b\" \
2583 -e \"/^#[ ]*ifndef[ ]/b\" \
2584 -e \"/^#[ ]*else/b\" \
2585 -e \"/^#[ ]*elif[ ]/b\" \
2586 -e \"/^#[ ]*undef[ ]/b\" \
2587 -e \"/^#[ ]*endif/b\" \
2588 -e \"s/^#.*//\" \
894356b3 2589 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2590 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2591#else
092bebab 2592# ifdef __OPEN_VM
cea2e8a9 2593 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2594%s %s -e '/^[^#]/b' \
2595 -e '/^#[ ]*include[ ]/b' \
2596 -e '/^#[ ]*define[ ]/b' \
2597 -e '/^#[ ]*if[ ]/b' \
2598 -e '/^#[ ]*ifdef[ ]/b' \
2599 -e '/^#[ ]*ifndef[ ]/b' \
2600 -e '/^#[ ]*else/b' \
2601 -e '/^#[ ]*elif[ ]/b' \
2602 -e '/^#[ ]*undef[ ]/b' \
2603 -e '/^#[ ]*endif/b' \
2604 -e 's/^[ ]*#.*//' \
894356b3 2605 %s | %"SVf" %"SVf" %s",
092bebab 2606# else
cea2e8a9 2607 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2608%s %s -e '/^[^#]/b' \
2609 -e '/^#[ ]*include[ ]/b' \
2610 -e '/^#[ ]*define[ ]/b' \
2611 -e '/^#[ ]*if[ ]/b' \
2612 -e '/^#[ ]*ifdef[ ]/b' \
2613 -e '/^#[ ]*ifndef[ ]/b' \
2614 -e '/^#[ ]*else/b' \
2615 -e '/^#[ ]*elif[ ]/b' \
2616 -e '/^#[ ]*undef[ ]/b' \
2617 -e '/^#[ ]*endif/b' \
2618 -e 's/^[ ]*#.*//' \
894356b3 2619 %s | %"SVf" -C %"SVf" %s",
092bebab 2620# endif
79072805
LW
2621#ifdef LOC_SED
2622 LOC_SED,
2623#else
2624 "sed",
2625#endif
3280af22 2626 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2627#endif
46fc3d4c 2628 scriptname, cpp, sv, CPPMINUS);
3280af22 2629 PL_doextract = FALSE;
79072805 2630#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2631 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2632#ifdef HAS_SETEUID
b28d0864 2633 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2634#else
2635#ifdef HAS_SETREUID
b28d0864 2636 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2637#else
2638#ifdef HAS_SETRESUID
b28d0864 2639 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2640#else
b28d0864 2641 PerlProc_setuid(PL_uid);
79072805
LW
2642#endif
2643#endif
85e6fe83 2644#endif
b28d0864 2645 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2646 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2647 }
2648#endif /* IAMSUID */
3280af22 2649 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2650 SvREFCNT_dec(cmd);
2651 SvREFCNT_dec(cpp);
79072805
LW
2652 }
2653 else if (!*scriptname) {
bbce6d69 2654 forbid_setid("program input from stdin");
3280af22 2655 PL_rsfp = PerlIO_stdin();
79072805 2656 }
96436eeb 2657 else {
3280af22 2658 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2659#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2660 if (PL_rsfp)
2661 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2662#endif
2663 }
3280af22 2664 if (!PL_rsfp) {
13281fa4 2665#ifdef DOSUID
a687059c 2666#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2667 if (PL_euid &&
cc49e20b 2668 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2669 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2670 {
46fc3d4c 2671 /* try again */
a7cb1f99 2672 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2673 (int)PERL_REVISION, (int)PERL_VERSION,
2674 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2675 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2676 }
2677#endif
2678#endif
cea2e8a9 2679 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2680 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2681 }
79072805 2682}
8d063cd8 2683
7b89560d
JH
2684/* Mention
2685 * I_SYSSTATVFS HAS_FSTATVFS
2686 * I_SYSMOUNT
c890dc6c 2687 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2688 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2689 * here so that metaconfig picks them up. */
2690
104d25b7 2691#ifdef IAMSUID
864dbfa3 2692STATIC int
e688b231 2693S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2694{
0545a864
JH
2695 int check_okay = 0; /* able to do all the required sys/libcalls */
2696 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2697/*
ad27e871 2698 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2699 * fstatvfs() is UNIX98.
0545a864 2700 * fstatfs() is 4.3 BSD.
ad27e871 2701 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2702 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2703 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2704 */
2705
6439433f
JH
2706#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2707
2708# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2709 defined(HAS_FSTATVFS)
2710# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2711 struct statvfs stfs;
6439433f 2712
104d25b7
JH
2713 check_okay = fstatvfs(fd, &stfs) == 0;
2714 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2715# endif /* fstatvfs */
ac27b0f5 2716
6439433f
JH
2717# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2718 defined(PERL_MOUNT_NOSUID) && \
2719 defined(HAS_FSTATFS) && \
2720 defined(HAS_STRUCT_STATFS) && \
2721 defined(HAS_STRUCT_STATFS_F_FLAGS)
2722# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2723 struct statfs stfs;
6439433f 2724
104d25b7 2725 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2726 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2727# endif /* fstatfs */
2728
2729# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2730 defined(PERL_MOUNT_NOSUID) && \
2731 defined(HAS_FSTAT) && \
2732 defined(HAS_USTAT) && \
2733 defined(HAS_GETMNT) && \
2734 defined(HAS_STRUCT_FS_DATA) && \
2735 defined(NOSTAT_ONE)
2736# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2737 struct stat fdst;
6439433f 2738
0545a864 2739 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2740 struct ustat us;
2741 if (ustat(fdst.st_dev, &us) == 0) {
2742 struct fs_data fsd;
2743 /* NOSTAT_ONE here because we're not examining fields which
2744 * vary between that case and STAT_ONE. */
ad27e871 2745 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2746 size_t cmplen = sizeof(us.f_fname);
2747 if (sizeof(fsd.fd_req.path) < cmplen)
2748 cmplen = sizeof(fsd.fd_req.path);
2749 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2750 fdst.st_dev == fsd.fd_req.dev) {
2751 check_okay = 1;
2752 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2753 }
2754 }
2755 }
2756 }
0545a864 2757 }
6439433f
JH
2758# endif /* fstat+ustat+getmnt */
2759
2760# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2761 defined(HAS_GETMNTENT) && \
2762 defined(HAS_HASMNTOPT) && \
2763 defined(MNTOPT_NOSUID)
2764# define FD_ON_NOSUID_CHECK_OKAY
2765 FILE *mtab = fopen("/etc/mtab", "r");
2766 struct mntent *entry;
2767 struct stat stb, fsb;
104d25b7
JH
2768
2769 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2770 while (entry = getmntent(mtab)) {
2771 if (stat(entry->mnt_dir, &fsb) == 0
2772 && fsb.st_dev == stb.st_dev)
2773 {
2774 /* found the filesystem */
2775 check_okay = 1;
2776 if (hasmntopt(entry, MNTOPT_NOSUID))
2777 on_nosuid = 1;
2778 break;
2779 } /* A single fs may well fail its stat(). */
2780 }
104d25b7
JH
2781 }
2782 if (mtab)
6439433f
JH
2783 fclose(mtab);
2784# endif /* getmntent+hasmntopt */
0545a864 2785
ac27b0f5 2786 if (!check_okay)
0545a864 2787 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2788 return on_nosuid;
2789}
2790#endif /* IAMSUID */
2791
76e3520e 2792STATIC void
cea2e8a9 2793S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2794{
155aba94 2795#ifdef IAMSUID
96436eeb 2796 int which;
155aba94 2797#endif
96436eeb 2798
13281fa4
LW
2799 /* do we need to emulate setuid on scripts? */
2800
2801 /* This code is for those BSD systems that have setuid #! scripts disabled
2802 * in the kernel because of a security problem. Merely defining DOSUID
2803 * in perl will not fix that problem, but if you have disabled setuid
2804 * scripts in the kernel, this will attempt to emulate setuid and setgid
2805 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2806 * root version must be called suidperl or sperlN.NNN. If regular perl
2807 * discovers that it has opened a setuid script, it calls suidperl with
2808 * the same argv that it had. If suidperl finds that the script it has
2809 * just opened is NOT setuid root, it sets the effective uid back to the
2810 * uid. We don't just make perl setuid root because that loses the
2811 * effective uid we had before invoking perl, if it was different from the
2812 * uid.
13281fa4
LW
2813 *
2814 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2815 * be defined in suidperl only. suidperl must be setuid root. The
2816 * Configure script will set this up for you if you want it.
2817 */
a687059c 2818
13281fa4 2819#ifdef DOSUID
6e72f9df 2820 char *s, *s2;
a0d0e21e 2821
b28d0864 2822 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2823 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2824 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2825 I32 len;
2d8e6c8d 2826 STRLEN n_a;
13281fa4 2827
a687059c 2828#ifdef IAMSUID
fe14fcc3 2829#ifndef HAS_SETREUID
a687059c
LW
2830 /* On this access check to make sure the directories are readable,
2831 * there is actually a small window that the user could use to make
2832 * filename point to an accessible directory. So there is a faint
2833 * chance that someone could execute a setuid script down in a
2834 * non-accessible directory. I don't know what to do about that.
2835 * But I don't think it's too important. The manual lies when
2836 * it says access() is useful in setuid programs.
2837 */
cc49e20b 2838 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2839 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2840#else
2841 /* If we can swap euid and uid, then we can determine access rights
2842 * with a simple stat of the file, and then compare device and
2843 * inode to make sure we did stat() on the same file we opened.
2844 * Then we just have to make sure he or she can execute it.
2845 */
2846 {
2847 struct stat tmpstatbuf;
2848
85e6fe83
LW
2849 if (
2850#ifdef HAS_SETREUID
b28d0864 2851 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2852#else
2853# if HAS_SETRESUID
b28d0864 2854 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2855# endif
85e6fe83 2856#endif
b28d0864 2857 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2858 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2859 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2860 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2861#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2862 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2863 Perl_croak(aTHX_ "Permission denied");
104d25b7 2864#endif
b28d0864
NIS
2865 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2866 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2867 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2868 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2869 }
85e6fe83
LW
2870 if (
2871#ifdef HAS_SETREUID
b28d0864 2872 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2873#else
2874# if defined(HAS_SETRESUID)
b28d0864 2875 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2876# endif
85e6fe83 2877#endif
b28d0864 2878 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2879 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2880 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2881 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2882 }
fe14fcc3 2883#endif /* HAS_SETREUID */
a687059c
LW
2884#endif /* IAMSUID */
2885
b28d0864 2886 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2887 Perl_croak(aTHX_ "Permission denied");
b28d0864 2888 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2889 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2890 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2891 CopLINE_inc(PL_curcop);
6b88bc9c 2892 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2893 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2894 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2895 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2896 if (*s == ' ') s++;
45d8adaa 2897 while (!isSPACE(*s)) s++;
2d8e6c8d 2898 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2899 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2900 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2901 Perl_croak(aTHX_ "Not a perl script");
a687059c 2902 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2903 /*
2904 * #! arg must be what we saw above. They can invoke it by
2905 * mentioning suidperl explicitly, but they may not add any strange
2906 * arguments beyond what #! says if they do invoke suidperl that way.
2907 */
2908 len = strlen(validarg);
2909 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2910 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2911 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
2912
2913#ifndef IAMSUID
b28d0864
NIS
2914 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2915 PL_euid == PL_statbuf.st_uid)
2916 if (!PL_do_undump)
cea2e8a9 2917 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2918FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2919#endif /* IAMSUID */
13281fa4 2920
b28d0864
NIS
2921 if (PL_euid) { /* oops, we're not the setuid root perl */
2922 (void)PerlIO_close(PL_rsfp);
13281fa4 2923#ifndef IAMSUID
46fc3d4c 2924 /* try again */
a7cb1f99 2925 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2926 (int)PERL_REVISION, (int)PERL_VERSION,
2927 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2928#endif
cea2e8a9 2929 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2930 }
2931
b28d0864 2932 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2933#ifdef HAS_SETEGID
b28d0864 2934 (void)setegid(PL_statbuf.st_gid);
a687059c 2935#else
fe14fcc3 2936#ifdef HAS_SETREGID
b28d0864 2937 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
2938#else
2939#ifdef HAS_SETRESGID
b28d0864 2940 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2941#else
b28d0864 2942 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
2943#endif
2944#endif
85e6fe83 2945#endif
b28d0864 2946 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2947 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2948 }
b28d0864
NIS
2949 if (PL_statbuf.st_mode & S_ISUID) {
2950 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2951#ifdef HAS_SETEUID
b28d0864 2952 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2953#else
fe14fcc3 2954#ifdef HAS_SETREUID
b28d0864 2955 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
2956#else
2957#ifdef HAS_SETRESUID
b28d0864 2958 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2959#else
b28d0864 2960 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
2961#endif
2962#endif
85e6fe83 2963#endif
b28d0864 2964 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2965 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2966 }
b28d0864 2967 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2968#ifdef HAS_SETEUID
b28d0864 2969 (void)seteuid((Uid_t)PL_uid);
a687059c 2970#else
fe14fcc3 2971#ifdef HAS_SETREUID
b28d0864 2972 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2973#else
85e6fe83 2974#ifdef HAS_SETRESUID
b28d0864 2975 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2976#else
b28d0864 2977 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2978#endif
a687059c
LW
2979#endif
2980#endif
b28d0864 2981 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2982 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2983 }
748a9306 2984 init_ids();
b28d0864 2985 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2986 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
2987 }
2988#ifdef IAMSUID
6b88bc9c 2989 else if (PL_preprocess)
cea2e8a9 2990 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2991 else if (fdscript >= 0)
cea2e8a9 2992 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 2993 else
cea2e8a9 2994 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
2995
2996 /* We absolutely must clear out any saved ids here, so we */
2997 /* exec the real perl, substituting fd script for scriptname. */
2998 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
2999 PerlIO_rewind(PL_rsfp);
3000 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3001 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3002 if (!PL_origargv[which])
cea2e8a9
GS
3003 Perl_croak(aTHX_ "Permission denied");
3004 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3005 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3006#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3007 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3008#endif
a7cb1f99 3009 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3010 (int)PERL_REVISION, (int)PERL_VERSION,
3011 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3012 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3013#endif /* IAMSUID */
a687059c 3014#else /* !DOSUID */
3280af22 3015 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3016#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3017 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3018 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3019 ||
b28d0864 3020 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3021 )
b28d0864 3022 if (!PL_do_undump)
cea2e8a9 3023 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3024FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3025#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3026 /* not set-id, must be wrapped */
a687059c 3027 }
13281fa4 3028#endif /* DOSUID */
79072805 3029}
13281fa4 3030
76e3520e 3031STATIC void
cea2e8a9 3032S_find_beginning(pTHX)
79072805 3033{
6e72f9df 3034 register char *s, *s2;
33b78306
LW
3035
3036 /* skip forward in input to the real script? */
3037
bbce6d69 3038 forbid_setid("-x");
bf4acbe4
GS
3039#ifdef MACOS_TRADITIONAL
3040 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
ac27b0f5 3041
bf4acbe4
GS
3042 while (PL_doextract || gMacPerl_AlwaysExtract) {
3043 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3044 if (!gMacPerl_AlwaysExtract)
3045 Perl_croak(aTHX_ "No Perl script found in input\n");
3046
3047 if (PL_doextract) /* require explicit override ? */
3048 if (!OverrideExtract(PL_origfilename))
3049 Perl_croak(aTHX_ "User aborted script\n");
3050 else
3051 PL_doextract = FALSE;
3052
3053 /* Pater peccavi, file does not have #! */
3054 PerlIO_rewind(PL_rsfp);
ac27b0f5 3055
bf4acbe4
GS
3056 break;
3057 }
3058#else
3280af22
NIS
3059 while (PL_doextract) {
3060 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3061 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3062#endif
6e72f9df 3063 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS
3064 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3065 PL_doextract = FALSE;
6e72f9df
PP
3066 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3067 s2 = s;
3068 while (*s == ' ' || *s == '\t') s++;
3069 if (*s++ == '-') {
3070 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3071 if (strnEQ(s2-4,"perl",4))
3072 /*SUPPRESS 530*/
155aba94
GS
3073 while ((s = moreswitches(s)))
3074 ;
33b78306 3075 }
83025b21
LW
3076 }
3077 }
3078}
3079
afe37c7d 3080
76e3520e 3081STATIC void
cea2e8a9 3082S_init_ids(pTHX)
352d5a3a 3083{
d8eceb89
JH
3084 PL_uid = PerlProc_getuid();
3085 PL_euid = PerlProc_geteuid();
3086 PL_gid = PerlProc_getgid();
3087 PL_egid = PerlProc_getegid();
748a9306 3088#ifdef VMS
b28d0864
NIS
3089 PL_uid |= PL_gid << 16;
3090 PL_euid |= PL_egid << 16;
748a9306 3091#endif
3280af22 3092 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3093}
79072805 3094
76e3520e 3095STATIC void
cea2e8a9 3096S_forbid_setid(pTHX_ char *s)
bbce6d69 3097{
3280af22 3098 if (PL_euid != PL_uid)
cea2e8a9 3099 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3100 if (PL_egid != PL_gid)
cea2e8a9 3101 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3102}
3103
1ee4443e
IZ
3104void
3105Perl_init_debugger(pTHX)
748a9306 3106{
1ee4443e
IZ
3107 HV *ostash = PL_curstash;
3108
3280af22
NIS
3109 PL_curstash = PL_debstash;
3110 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3111 AvREAL_off(PL_dbargs);
3112 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3113 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3114 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3115 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3116 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3117 sv_setiv(PL_DBsingle, 0);
3280af22 3118 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3119 sv_setiv(PL_DBtrace, 0);
3280af22 3120 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3121 sv_setiv(PL_DBsignal, 0);
1ee4443e 3122 PL_curstash = ostash;
352d5a3a
LW
3123}
3124
2ce36478
SM
3125#ifndef STRESS_REALLOC
3126#define REASONABLE(size) (size)
3127#else
3128#define REASONABLE(size) (1) /* unreasonable */
3129#endif
3130
11343788 3131void
cea2e8a9 3132Perl_init_stacks(pTHX)
79072805 3133{
e336de0d 3134 /* start with 128-item stack and 8K cxstack */
3280af22 3135 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3136 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3137 PL_curstackinfo->si_type = PERLSI_MAIN;
3138 PL_curstack = PL_curstackinfo->si_stack;
3139 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3140
3280af22
NIS
3141 PL_stack_base = AvARRAY(PL_curstack);
3142 PL_stack_sp = PL_stack_base;
3143 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3144
3280af22
NIS
3145 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3146 PL_tmps_floor = -1;
3147 PL_tmps_ix = -1;
3148 PL_tmps_max = REASONABLE(128);
8990e307 3149
3280af22
NIS
3150 New(54,PL_markstack,REASONABLE(32),I32);
3151 PL_markstack_ptr = PL_markstack;
3152 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3153
ce2f7c3b 3154 SET_MARK_OFFSET;
e336de0d 3155
3280af22
NIS
3156 New(54,PL_scopestack,REASONABLE(32),I32);
3157 PL_scopestack_ix = 0;
3158 PL_scopestack_max = REASONABLE(32);
79072805 3159
3280af22
NIS
3160 New(54,PL_savestack,REASONABLE(128),ANY);
3161 PL_savestack_ix = 0;
3162 PL_savestack_max = REASONABLE(128);
79072805 3163
3280af22
NIS
3164 New(54,PL_retstack,REASONABLE(16),OP*);
3165 PL_retstack_ix = 0;
3166 PL_retstack_max = REASONABLE(16);
378cc40b 3167}
33b78306 3168
2ce36478
SM
3169#undef REASONABLE
3170
76e3520e 3171STATIC void
cea2e8a9 3172S_nuke_stacks(pTHX)
6e72f9df 3173{
3280af22
NIS
3174 while (PL_curstackinfo->si_next)
3175 PL_curstackinfo = PL_curstackinfo->si_next;
3176 while (PL_curstackinfo) {
3177 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3178 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3179 Safefree(PL_curstackinfo->si_cxstack);
3180 Safefree(PL_curstackinfo);
3181 PL_curstackinfo = p;
e336de0d 3182 }
3280af22
NIS
3183 Safefree(PL_tmps_stack);
3184 Safefree(PL_markstack);
3185 Safefree(PL_scopestack);
3186 Safefree(PL_savestack);
3187 Safefree(PL_retstack);
378cc40b 3188}
33b78306 3189
76e3520e 3190#ifndef PERL_OBJECT
760ac839 3191static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3192#endif
7aa04957 3193
76e3520e 3194STATIC void
cea2e8a9 3195S_init_lexer(pTHX)
8990e307 3196{
76e3520e
GS
3197#ifdef PERL_OBJECT
3198 PerlIO *tmpfp;
3199#endif
3280af22
NIS
3200 tmpfp = PL_rsfp;
3201 PL_rsfp = Nullfp;
3202 lex_start(PL_linestr);
3203 PL_rsfp = tmpfp;
79cb57f6 3204 PL_subname = newSVpvn("main",4);
8990e307
LW
3205}
3206
76e3520e 3207STATIC void
cea2e8a9 3208S_init_predump_symbols(pTHX)
45d8adaa 3209{
93a17b20 3210 GV *tmpgv;
af8c498a 3211 IO *io;
79072805 3212
864dbfa3 3213 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3214 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3215 GvMULTI_on(PL_stdingv);
af8c498a
GS
3216 io = GvIOp(PL_stdingv);
3217 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3218 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3219 GvMULTI_on(tmpgv);
af8c498a 3220 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3221
85e6fe83 3222 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3223 GvMULTI_on(tmpgv);
af8c498a
GS
3224 io = GvIOp(tmpgv);
3225 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3226 setdefout(tmpgv);
adbc6bb1 3227 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3228 GvMULTI_on(tmpgv);
af8c498a 3229 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3230
bf49b057
GS
3231 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3232 GvMULTI_on(PL_stderrgv);
3233 io = GvIOp(PL_stderrgv);
af8c498a 3234 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3235 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3236 GvMULTI_on(tmpgv);
af8c498a 3237 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3238
3280af22 3239 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3240
bf4acbe4
GS
3241 if (PL_osname)
3242 Safefree(PL_osname);
3243 PL_osname = savepv(OSNAME);
79072805 3244}
33b78306 3245
76e3520e 3246STATIC void
cea2e8a9 3247S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3248{
79072805
LW
3249 char *s;
3250 SV *sv;
3251 GV* tmpgv;
fe14fcc3 3252
79072805 3253 argc--,argv++; /* skip name of script */
3280af22 3254 if (PL_doswitches) {
79072805
LW
3255 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3256 if (!argv[0][1])
3257 break;
379d538a 3258 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3259 argc--,argv++;
3260 break;
3261 }
155aba94 3262 if ((s = strchr(argv[0], '='))) {
79072805 3263 *s++ = '\0';
85e6fe83 3264 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3265 }
3266 else
85e6fe83 3267 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3268 }
79072805 3269 }
3280af22
NIS
3270 PL_toptarget = NEWSV(0,0);
3271 sv_upgrade(PL_toptarget, SVt_PVFM);
3272 sv_setpvn(PL_toptarget, "", 0);
3273 PL_bodytarget = NEWSV(0,0);
3274 sv_upgrade(PL_bodytarget, SVt_PVFM);
3275 sv_setpvn(PL_bodytarget, "", 0);
3276 PL_formtarget = PL_bodytarget;
79072805 3277
bbce6d69 3278 TAINT;
155aba94 3279 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3280#ifdef MACOS_TRADITIONAL
3281 /* $0 is not majick on a Mac */
3282 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3283#else
3280af22 3284 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3285 magicname("0", "0", 1);
bf4acbe4 3286#endif
79072805 3287 }
155aba94 3288 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3289#ifdef OS2
23da6c43 3290 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3291#else
3280af22 3292 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3293#endif
155aba94 3294 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3295 GvMULTI_on(PL_argvgv);
3296 (void)gv_AVadd(PL_argvgv);
3297 av_clear(GvAVn(PL_argvgv));
79072805 3298 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3299 SV *sv = newSVpv(argv[0],0);
3300 av_push(GvAVn(PL_argvgv),sv);
3301 if (PL_widesyscalls)
e84ff256 3302 (void)sv_utf8_decode(sv);
79072805
LW
3303 }
3304 }
155aba94 3305 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3306 HV *hv;
3280af22
NIS
3307 GvMULTI_on(PL_envgv);
3308 hv = GvHVn(PL_envgv);
3309 hv_magic(hv, PL_envgv, 'E');
fa6a1c44 3310#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3311 /* Note that if the supplied env parameter is actually a copy
3312 of the global environ then it may now point to free'd memory
3313 if the environment has been modified since. To avoid this
3314 problem we treat env==NULL as meaning 'use the default'
3315 */
3316 if (!env)
3317 env = environ;
5aabfad6 3318 if (env != environ)
79072805
LW
3319 environ[0] = Nullch;
3320 for (; *env; env++) {
93a17b20 3321 if (!(s = strchr(*env,'=')))
79072805
LW
3322 continue;
3323 *s++ = '\0';
60ce6247 3324#if defined(MSDOS)
137443ea
PP
3325 (void)strupr(*env);
3326#endif
79072805
LW
3327 sv = newSVpv(s--,0);
3328 (void)hv_store(hv, *env, s - *env, sv, 0);
3329 *s = '=';
3e3baf6d
TB
3330#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3331 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 3332 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 3333#endif
fe14fcc3 3334 }
4550b24a
PP
3335#endif
3336#ifdef DYNAMIC_ENV_FETCH
3337 HvNAME(hv) = savepv(ENV_HV_NAME);
3338#endif
79072805 3339 }
bbce6d69 3340 TAINT_NOT;
155aba94 3341 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3342 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3343}
34de22dd 3344
76e3520e 3345STATIC void
cea2e8a9 3346S_init_perllib(pTHX)
34de22dd 3347{
85e6fe83 3348 char *s;
3280af22 3349 if (!PL_tainting) {
552a7a9b 3350#ifndef VMS
76e3520e 3351 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3352 if (s)
9c8a64f0 3353 incpush(s, TRUE, TRUE);
85e6fe83 3354 else
9c8a64f0 3355 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b
PP
3356#else /* VMS */
3357 /* Treat PERL5?LIB as a possible search list logical name -- the
3358 * "natural" VMS idiom for a Unix path string. We allow each
3359 * element to be a set of |-separated directories for compatibility.
3360 */
3361 char buf[256];
3362 int idx = 0;
3363 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3364 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3365 else
9c8a64f0 3366 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3367#endif /* VMS */
85e6fe83 3368 }
34de22dd 3369
c90c0ff4 3370/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3371 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3372*/
4633a7c4 3373#ifdef APPLLIB_EXP
9c8a64f0 3374 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3375#endif
4633a7c4 3376
fed7345c 3377#ifdef ARCHLIB_EXP
9c8a64f0 3378 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3379#endif
bf4acbe4
GS
3380#ifdef MACOS_TRADITIONAL
3381 {
3382 struct stat tmpstatbuf;
3383 SV * privdir = NEWSV(55, 0);
3384 char * macperl = PerlEnv_getenv("MACPERL");
3385
3386 if (!macperl)
3387 macperl = "";
3388
3389 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3390 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3391 incpush(SvPVX(privdir), TRUE, FALSE);
3392 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3393 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3394 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3395
bf4acbe4
GS
3396 SvREFCNT_dec(privdir);
3397 }
3398 if (!PL_tainting)
3399 incpush(":", FALSE, FALSE);
3400#else
fed7345c 3401#ifndef PRIVLIB_EXP
65f19062 3402# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3403#endif
ac27b0f5 3404#if defined(WIN32)
9c8a64f0 3405 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3406#else
9c8a64f0 3407 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3408#endif
4633a7c4 3409
65f19062 3410#ifdef SITEARCH_EXP
3b290362
GS
3411 /* sitearch is always relative to sitelib on Windows for
3412 * DLL-based path intuition to work correctly */
3413# if !defined(WIN32)
9c8a64f0 3414 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS
3415# endif
3416#endif
3417
4633a7c4 3418#ifdef SITELIB_EXP
65f19062 3419# if defined(WIN32)
9c8a64f0 3420 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3421# else
9c8a64f0 3422 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS
3423# endif
3424#endif
189d1e8d 3425
65f19062 3426#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3427 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3428#endif
65f19062
GS
3429
3430#ifdef PERL_VENDORARCH_EXP
4ea817c6 3431 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS
3432 * DLL-based path intuition to work correctly */
3433# if !defined(WIN32)
9c8a64f0 3434 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3435# endif
4b03c463 3436#endif
65f19062
GS
3437
3438#ifdef PERL_VENDORLIB_EXP
3439# if defined(WIN32)
9c8a64f0 3440 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3441# else
9c8a64f0 3442 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3443# endif
a3635516 3444#endif
65f19062
GS
3445
3446#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3447 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3448#endif
65f19062 3449
3b777bb4
GS
3450#ifdef PERL_OTHERLIBDIRS
3451