This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Basic tweaks to do_open() type parsing to allow layer/discipline
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW
1/* perl.c
2 *
3818b22b 3 * Copyright (c) 1987-2000 Larry Wall
a687059c 4 *
352d5a3a
LW
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW
8 */
9
a0d0e21e
LW
10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
26#endif
27
0cb96387
GS
28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW
36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS
43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS
50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS
67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS
73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS
85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS
87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS
94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS
102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS
104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS
106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS
112#endif
113
32e30700
GS
114 return my_perl;
115}
116#else
954c1994
GS
117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS
140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1
MB
151#ifdef USE_THREADS
152 int i;
153#ifndef FAKE_THREADS
e1f15930 154 struct perl_thread *thr = NULL;
a863c7d1
MB
155#endif /* FAKE_THREADS */
156#endif /* USE_THREADS */
ba869deb 157
8990e307 158#ifdef MULTIPLICITY
54aff467
GS
159 init_interp();
160 PL_perl_destruct_level = 1;
161#else
162 if (PL_perl_destruct_level > 0)
163 init_interp();
164#endif
165
33f46ff6 166 /* Init the real globals (and main thread)? */
3280af22 167 if (!PL_linestr) {
1feb2720 168#ifdef USE_THREADS
533c011a 169 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB
170 /*
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
173 */
533c011a
NIS
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
ba869deb 178# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 179 MUTEX_INIT(&PL_svref_mutex);
ba869deb 180# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 181
5ff3f7a4 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{
11343788 301 dTHR;
748a9306 302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
8990e307 303 I32 last_sv_count;
a0d0e21e 304 HV *hv;
1f2bfc8a 305#ifdef USE_THREADS
33f46ff6 306 Thread t;
cea2e8a9 307 dTHX;
1f2bfc8a 308#endif /* USE_THREADS */
8990e307 309
7766f137
GS
310 /* wait for all pseudo-forked children to finish */
311 PERL_WAIT_FOR_CHILDREN;
312
11343788 313#ifdef USE_THREADS
0f15f207 314#ifndef FAKE_THREADS
8023c3ce
MB
315 /* Pass 1 on any remaining threads: detach joinables, join zombies */
316 retry_cleanup:
533c011a 317 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 318 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 319 "perl_destruct: waiting for %d threads...\n",
533c011a 320 PL_nthreads - 1));
33f46ff6 321 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
322 MUTEX_LOCK(&t->mutex);
323 switch (ThrSTATE(t)) {
324 AV *av;
c7848ba1 325 case THRf_ZOMBIE:
bf49b057 326 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 327 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
328 ThrSETSTATE(t, THRf_DEAD);
329 MUTEX_UNLOCK(&t->mutex);
533c011a 330 PL_nthreads--;
8023c3ce
MB
331 /*
332 * The SvREFCNT_dec below may take a long time (e.g. av
333 * may contain an object scalar whose destructor gets
334 * called) so we have to unlock threads_mutex and start
335 * all over again.
336 */
533c011a 337 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 338 JOIN(t, &av);
605e5515 339 SvREFCNT_dec((SV*)av);
bf49b057 340 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 341 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 342 goto retry_cleanup;
c7848ba1 343 case THRf_R_JOINABLE:
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
345 "perl_destruct: detaching thread %p\n", t));
346 ThrSETSTATE(t, THRf_R_DETACHED);
347 /*
348 * We unlock threads_mutex and t->mutex in the opposite order
349 * from which we locked them just so that DETACH won't
350 * deadlock if it panics. It's only a breach of good style
351 * not a bug since they are unlocks not locks.
352 */
533c011a 353 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
354 DETACH(t);
355 MUTEX_UNLOCK(&t->mutex);
8023c3ce 356 goto retry_cleanup;
c7848ba1 357 default:
bf49b057 358 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
359 "perl_destruct: ignoring %p (state %u)\n",
360 t, ThrSTATE(t)));
361 MUTEX_UNLOCK(&t->mutex);
c7848ba1 362 /* fall through and out */
33f46ff6
MB
363 }
364 }
8023c3ce
MB
365 /* We leave the above "Pass 1" loop with threads_mutex still locked */
366
367 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 368 while (PL_nthreads > 1)
11343788 369 {
bf49b057 370 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 371 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
372 PL_nthreads - 1));
373 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
374 }
375 /* At this point, we're the last thread */
533c011a 376 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 377 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
378 MUTEX_DESTROY(&PL_threads_mutex);
379 COND_DESTROY(&PL_nthreads_cond);
b57a092c 380 PL_nthreads--;
0f15f207 381#endif /* !defined(FAKE_THREADS) */
11343788
MB
382#endif /* USE_THREADS */
383
3280af22 384 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
385#ifdef DEBUGGING
386 {
387 char *s;
155aba94 388 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
389 int i = atoi(s);
390 if (destruct_level < i)
391 destruct_level = i;
392 }
4633a7c4
LW
393 }
394#endif
395
8990e307 396 LEAVE;
a0d0e21e
LW
397 FREETMPS;
398
ff0cee69
PP
399 /* We must account for everything. */
400
401 /* Destroy the main CV and syntax tree */
3280af22
NIS
402 if (PL_main_root) {
403 PL_curpad = AvARRAY(PL_comppad);
404 op_free(PL_main_root);
405 PL_main_root = Nullop;
a0d0e21e 406 }
3280af22
NIS
407 PL_curcop = &PL_compiling;
408 PL_main_start = Nullop;
409 SvREFCNT_dec(PL_main_cv);
410 PL_main_cv = Nullcv;
24d3c518 411 PL_dirty = TRUE;
ff0cee69 412
3280af22 413 if (PL_sv_objcount) {
a0d0e21e
LW
414 /*
415 * Try to destruct global references. We do this first so that the
416 * destructors and destructees still exist. Some sv's might remain.
417 * Non-referenced objects are on their own.
418 */
a0d0e21e 419 sv_clean_objs();
8990e307
LW
420 }
421
5cd24f17 422 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
423 SvREFCNT_dec(PL_warnhook);
424 PL_warnhook = Nullsv;
425 SvREFCNT_dec(PL_diehook);
426 PL_diehook = Nullsv;
5cd24f17 427
4b556e6c 428 /* call exit list functions */
3280af22 429 while (PL_exitlistlen-- > 0)
0cb96387 430 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 431
3280af22 432 Safefree(PL_exitlist);
4b556e6c 433
a0d0e21e 434 if (destruct_level == 0){
8990e307 435
a0d0e21e
LW
436 DEBUG_P(debprofdump());
437
438 /* The exit() function will do everything that needs doing. */
439 return;
440 }
5dd60ef7 441
5f05dabc
PP
442 /* loosen bonds of global variables */
443
3280af22
NIS
444 if(PL_rsfp) {
445 (void)PerlIO_close(PL_rsfp);
446 PL_rsfp = Nullfp;
8ebc5c01
PP
447 }
448
449 /* Filters for program text */
3280af22
NIS
450 SvREFCNT_dec(PL_rsfp_filters);
451 PL_rsfp_filters = Nullav;
8ebc5c01
PP
452
453 /* switches */
3280af22
NIS
454 PL_preprocess = FALSE;
455 PL_minus_n = FALSE;
456 PL_minus_p = FALSE;
457 PL_minus_l = FALSE;
458 PL_minus_a = FALSE;
459 PL_minus_F = FALSE;
460 PL_doswitches = FALSE;
599cee73 461 PL_dowarn = G_WARN_OFF;
3280af22
NIS
462 PL_doextract = FALSE;
463 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
464 PL_unsafe = FALSE;
465
466 Safefree(PL_inplace);
467 PL_inplace = Nullch;
a7cb1f99 468 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
469
470 if (PL_e_script) {
471 SvREFCNT_dec(PL_e_script);
472 PL_e_script = Nullsv;
8ebc5c01
PP
473 }
474
475 /* magical thingies */
476
d33b2eba 477 Safefree(PL_ofs); /* $, */
3280af22 478 PL_ofs = Nullch;
5f05dabc 479
d33b2eba 480 Safefree(PL_ors); /* $\ */
3280af22 481 PL_ors = Nullch;
8ebc5c01 482
3280af22
NIS
483 SvREFCNT_dec(PL_rs); /* $/ */
484 PL_rs = Nullsv;
dc92893f 485
3280af22
NIS
486 SvREFCNT_dec(PL_nrs); /* $/ helper */
487 PL_nrs = Nullsv;
5f05dabc 488
d33b2eba
GS
489 PL_multiline = 0; /* $* */
490 Safefree(PL_osname); /* $^O */
491 PL_osname = Nullch;
5f05dabc 492
3280af22
NIS
493 SvREFCNT_dec(PL_statname);
494 PL_statname = Nullsv;
495 PL_statgv = Nullgv;
5f05dabc 496
8ebc5c01
PP
497 /* defgv, aka *_ should be taken care of elsewhere */
498
8ebc5c01 499 /* clean up after study() */
3280af22
NIS
500 SvREFCNT_dec(PL_lastscream);
501 PL_lastscream = Nullsv;
502 Safefree(PL_screamfirst);
503 PL_screamfirst = 0;
504 Safefree(PL_screamnext);
505 PL_screamnext = 0;
8ebc5c01 506
7d5ea4e7
GS
507 /* float buffer */
508 Safefree(PL_efloatbuf);
509 PL_efloatbuf = Nullch;
510 PL_efloatsize = 0;
511
8ebc5c01 512 /* startup and shutdown function lists */
3280af22
NIS
513 SvREFCNT_dec(PL_beginav);
514 SvREFCNT_dec(PL_endav);
7d30b5c4 515 SvREFCNT_dec(PL_checkav);
3280af22
NIS
516 SvREFCNT_dec(PL_initav);
517 PL_beginav = Nullav;
518 PL_endav = Nullav;
7d30b5c4 519 PL_checkav = Nullav;
3280af22 520 PL_initav = Nullav;
5618dfe8 521
8ebc5c01 522 /* shortcuts just get cleared */
3280af22 523 PL_envgv = Nullgv;
3280af22
NIS
524 PL_incgv = Nullgv;
525 PL_hintgv = Nullgv;
526 PL_errgv = Nullgv;
527 PL_argvgv = Nullgv;
528 PL_argvoutgv = Nullgv;
529 PL_stdingv = Nullgv;
bf49b057 530 PL_stderrgv = Nullgv;
3280af22
NIS
531 PL_last_in_gv = Nullgv;
532 PL_replgv = Nullgv;
5c831c24 533 PL_debstash = Nullhv;
8ebc5c01
PP
534
535 /* reset so print() ends up where we expect */
536 setdefout(Nullgv);
5c831c24 537
7a1c5554
GS
538 SvREFCNT_dec(PL_argvout_stack);
539 PL_argvout_stack = Nullav;
8ebc5c01 540
5c831c24
GS
541 SvREFCNT_dec(PL_modglobal);
542 PL_modglobal = Nullhv;
543 SvREFCNT_dec(PL_preambleav);
544 PL_preambleav = Nullav;
545 SvREFCNT_dec(PL_subname);
546 PL_subname = Nullsv;
547 SvREFCNT_dec(PL_linestr);
548 PL_linestr = Nullsv;
549 SvREFCNT_dec(PL_pidstatus);
550 PL_pidstatus = Nullhv;
551 SvREFCNT_dec(PL_toptarget);
552 PL_toptarget = Nullsv;
553 SvREFCNT_dec(PL_bodytarget);
554 PL_bodytarget = Nullsv;
555 PL_formtarget = Nullsv;
556
d33b2eba 557 /* free locale stuff */
b9582b6a 558#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
559 Safefree(PL_collation_name);
560 PL_collation_name = Nullch;
b9582b6a 561#endif
d33b2eba 562
b9582b6a 563#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
564 Safefree(PL_numeric_name);
565 PL_numeric_name = Nullch;
b9582b6a 566#endif
d33b2eba 567
5c831c24
GS
568 /* clear utf8 character classes */
569 SvREFCNT_dec(PL_utf8_alnum);
570 SvREFCNT_dec(PL_utf8_alnumc);
571 SvREFCNT_dec(PL_utf8_ascii);
572 SvREFCNT_dec(PL_utf8_alpha);
573 SvREFCNT_dec(PL_utf8_space);
574 SvREFCNT_dec(PL_utf8_cntrl);
575 SvREFCNT_dec(PL_utf8_graph);
576 SvREFCNT_dec(PL_utf8_digit);
577 SvREFCNT_dec(PL_utf8_upper);
578 SvREFCNT_dec(PL_utf8_lower);
579 SvREFCNT_dec(PL_utf8_print);
580 SvREFCNT_dec(PL_utf8_punct);
581 SvREFCNT_dec(PL_utf8_xdigit);
582 SvREFCNT_dec(PL_utf8_mark);
583 SvREFCNT_dec(PL_utf8_toupper);
584 SvREFCNT_dec(PL_utf8_tolower);
585 PL_utf8_alnum = Nullsv;
586 PL_utf8_alnumc = Nullsv;
587 PL_utf8_ascii = Nullsv;
588 PL_utf8_alpha = Nullsv;
589 PL_utf8_space = Nullsv;
590 PL_utf8_cntrl = Nullsv;
591 PL_utf8_graph = Nullsv;
592 PL_utf8_digit = Nullsv;
593 PL_utf8_upper = Nullsv;
594 PL_utf8_lower = Nullsv;
595 PL_utf8_print = Nullsv;
596 PL_utf8_punct = Nullsv;
597 PL_utf8_xdigit = Nullsv;
598 PL_utf8_mark = Nullsv;
599 PL_utf8_toupper = Nullsv;
600 PL_utf8_totitle = Nullsv;
601 PL_utf8_tolower = Nullsv;
602
971a9dd3
GS
603 if (!specialWARN(PL_compiling.cop_warnings))
604 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 605 PL_compiling.cop_warnings = Nullsv;
f4dd75d9
GS
606#ifdef USE_ITHREADS
607 Safefree(CopFILE(&PL_compiling));
608 CopFILE(&PL_compiling) = Nullch;
609 Safefree(CopSTASHPV(&PL_compiling));
610#else
01724ea0 611 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
612 CopFILEGV(&PL_compiling) = Nullgv;
613 /* cop_stash is not refcounted */
01724ea0 614#endif
5c831c24 615
a0d0e21e 616 /* Prepare to destruct main symbol table. */
5f05dabc 617
3280af22
NIS
618 hv = PL_defstash;
619 PL_defstash = 0;
a0d0e21e 620 SvREFCNT_dec(hv);
5c831c24
GS
621 SvREFCNT_dec(PL_curstname);
622 PL_curstname = Nullsv;
a0d0e21e 623
5a844595
GS
624 /* clear queued errors */
625 SvREFCNT_dec(PL_errors);
626 PL_errors = Nullsv;
627
a0d0e21e 628 FREETMPS;
0453d815 629 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 630 if (PL_scopestack_ix != 0)
0453d815
PM
631 Perl_warner(aTHX_ WARN_INTERNAL,
632 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
633 (long)PL_scopestack_ix);
634 if (PL_savestack_ix != 0)
0453d815
PM
635 Perl_warner(aTHX_ WARN_INTERNAL,
636 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
637 (long)PL_savestack_ix);
638 if (PL_tmps_floor != -1)
0453d815 639 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 640 (long)PL_tmps_floor + 1);
a0d0e21e 641 if (cxstack_ix != -1)
0453d815 642 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 643 (long)cxstack_ix + 1);
a0d0e21e 644 }
8990e307
LW
645
646 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 647 last_sv_count = 0;
d33b2eba 648 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS
649 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
650 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
651 last_sv_count = PL_sv_count;
8990e307
LW
652 sv_clean_all();
653 }
d33b2eba
GS
654 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
655 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
656 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
657 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 658
d4777f27
GS
659 AvREAL_off(PL_fdpid); /* no surviving entries */
660 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
661 PL_fdpid = Nullav;
662
6c644e78
GS
663#ifdef HAVE_INTERP_INTERN
664 sys_intern_clear();
665#endif
666
6e72f9df
PP
667 /* Destruct the global string table. */
668 {
669 /* Yell and reset the HeVAL() slots that are still holding refcounts,
670 * so that sv_free() won't fail on them.
671 */
672 I32 riter;
673 I32 max;
674 HE *hent;
675 HE **array;
676
677 riter = 0;
3280af22
NIS
678 max = HvMAX(PL_strtab);
679 array = HvARRAY(PL_strtab);
6e72f9df
PP
680 hent = array[0];
681 for (;;) {
0453d815
PM
682 if (hent && ckWARN_d(WARN_INTERNAL)) {
683 Perl_warner(aTHX_ WARN_INTERNAL,
684 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
685 HeVAL(hent) - Nullsv, HeKEY(hent));
686 HeVAL(hent) = Nullsv;
687 hent = HeNEXT(hent);
688 }
689 if (!hent) {
690 if (++riter > max)
691 break;
692 hent = array[riter];
693 }
694 }
695 }
3280af22 696 SvREFCNT_dec(PL_strtab);
6e72f9df 697
d33b2eba
GS
698 /* free special SVs */
699
700 SvREFCNT(&PL_sv_yes) = 0;
701 sv_clear(&PL_sv_yes);
702 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 703 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
704
705 SvREFCNT(&PL_sv_no) = 0;
706 sv_clear(&PL_sv_no);
707 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 708 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
709
710 SvREFCNT(&PL_sv_undef) = 0;
711 SvREADONLY_off(&PL_sv_undef);
d33b2eba 712
0453d815
PM
713 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
714 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 715
3280af22 716 Safefree(PL_origfilename);
3280af22 717 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
718 if (PL_reg_curpm)
719 Safefree(PL_reg_curpm);
82ba1be6 720 Safefree(PL_reg_poscache);
3280af22
NIS
721 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
722 Safefree(PL_op_mask);
cf36064f
GS
723 Safefree(PL_psig_ptr);
724 Safefree(PL_psig_name);
6e72f9df 725 nuke_stacks();
3280af22 726 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
a0d0e21e
LW
727
728 DEBUG_P(debprofdump());
11343788 729#ifdef USE_THREADS
5f08fbcd 730 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
731 MUTEX_DESTROY(&PL_sv_mutex);
732 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 733 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 734 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 735 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
736#ifdef EMULATE_ATOMIC_REFCOUNTS
737 MUTEX_DESTROY(&PL_svref_mutex);
738#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 739
8023c3ce 740 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
741 Safefree(SvPVX(PL_thrsv));
742 Safefree(SvANY(PL_thrsv));
743 Safefree(PL_thrsv);
744 PL_thrsv = Nullsv;
8023c3ce 745#endif /* USE_THREADS */
d33b2eba 746
612f20c3
GS
747 sv_free_arenas();
748
fc36a67e
PP
749 /* As the absolutely last thing, free the non-arena SV for mess() */
750
3280af22 751 if (PL_mess_sv) {
9c63abab
GS
752 /* it could have accumulated taint magic */
753 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
754 MAGIC* mg;
755 MAGIC* moremagic;
756 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
757 moremagic = mg->mg_moremagic;
758 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
759 Safefree(mg->mg_ptr);
760 Safefree(mg);
761 }
762 }
fc36a67e 763 /* we know that type >= SVt_PV */
155aba94 764 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
765 Safefree(SvPVX(PL_mess_sv));
766 Safefree(SvANY(PL_mess_sv));
767 Safefree(PL_mess_sv);
768 PL_mess_sv = Nullsv;
fc36a67e 769 }
79072805
LW
770}
771
954c1994
GS
772/*
773=for apidoc perl_free
774
775Releases a Perl interpreter. See L<perlembed>.
776
777=cut
778*/
779
79072805 780void
0cb96387 781perl_free(pTHXx)
79072805 782{
c5be433b 783#if defined(PERL_OBJECT)
7f0d82f7 784 PerlMem_free(this);
76e3520e 785#else
1c0ca838
GS
786# if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
787 void *host = w32_internal_host;
7f0d82f7 788 PerlMem_free(aTHXx);
1c0ca838
GS
789 win32_delete_internal_host(host);
790# else
791 PerlMem_free(aTHXx);
792# endif
76e3520e 793#endif
79072805
LW
794}
795
4b556e6c 796void
864dbfa3 797Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 798{
3280af22
NIS
799 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
800 PL_exitlist[PL_exitlistlen].fn = fn;
801 PL_exitlist[PL_exitlistlen].ptr = ptr;
802 ++PL_exitlistlen;
4b556e6c
JD
803}
804
954c1994
GS
805/*
806=for apidoc perl_parse
807
808Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
809
810=cut
811*/
812
79072805 813int
0cb96387 814perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 815{
11343788 816 dTHR;
6224f72b 817 I32 oldscope;
6224f72b 818 int ret;
db36c5a1 819 dJMPENV;
cea2e8a9
GS
820#ifdef USE_THREADS
821 dTHX;
822#endif
8d063cd8 823
a687059c
LW
824#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
825#ifdef IAMSUID
826#undef IAMSUID
cea2e8a9 827 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
828setuid perl scripts securely.\n");
829#endif
830#endif
831
8f1f23e8 832#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
833 _dyld_lookup_and_bind
834 ("__environ", (unsigned long *) &environ_pointer, NULL);
835#endif /* environ */
836
3280af22
NIS
837 PL_origargv = argv;
838 PL_origargc = argc;
ed79a026 839#if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3280af22 840 PL_origenviron = environ;
a0d0e21e
LW
841#endif
842
3280af22 843 if (PL_do_undump) {
a0d0e21e
LW
844
845 /* Come here if running an undumped a.out. */
846
3280af22
NIS
847 PL_origfilename = savepv(argv[0]);
848 PL_do_undump = FALSE;
a0d0e21e 849 cxstack_ix = -1; /* start label stack again */
748a9306 850 init_ids();
a0d0e21e
LW
851 init_postdump_symbols(argc,argv,env);
852 return 0;
853 }
854
3280af22
NIS
855 if (PL_main_root) {
856 PL_curpad = AvARRAY(PL_comppad);
857 op_free(PL_main_root);
858 PL_main_root = Nullop;
ff0cee69 859 }
3280af22
NIS
860 PL_main_start = Nullop;
861 SvREFCNT_dec(PL_main_cv);
862 PL_main_cv = Nullcv;
79072805 863
3280af22
NIS
864 time(&PL_basetime);
865 oldscope = PL_scopestack_ix;
599cee73 866 PL_dowarn = G_WARN_OFF;
f86702cc 867
14dd3ad8
GS
868#ifdef PERL_FLEXIBLE_EXCEPTIONS
869 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
870#else
871 JMPENV_PUSH(ret);
872#endif
6224f72b 873 switch (ret) {
312caa8e 874 case 0:
14dd3ad8
GS
875#ifndef PERL_FLEXIBLE_EXCEPTIONS
876 parse_body(env,xsinit);
877#endif
7d30b5c4
GS
878 if (PL_checkav)
879 call_list(oldscope, PL_checkav);
14dd3ad8
GS
880 ret = 0;
881 break;
6224f72b
GS
882 case 1:
883 STATUS_ALL_FAILURE;
884 /* FALL THROUGH */
885 case 2:
886 /* my_exit() was called */
3280af22 887 while (PL_scopestack_ix > oldscope)
6224f72b
GS
888 LEAVE;
889 FREETMPS;
3280af22 890 PL_curstash = PL_defstash;
7d30b5c4
GS
891 if (PL_checkav)
892 call_list(oldscope, PL_checkav);
14dd3ad8
GS
893 ret = STATUS_NATIVE_EXPORT;
894 break;
6224f72b 895 case 3:
bf49b057 896 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
897 ret = 1;
898 break;
6224f72b 899 }
14dd3ad8
GS
900 JMPENV_POP;
901 return ret;
902}
903
904#ifdef PERL_FLEXIBLE_EXCEPTIONS
905STATIC void *
906S_vparse_body(pTHX_ va_list args)
907{
908 char **env = va_arg(args, char**);
909 XSINIT_t xsinit = va_arg(args, XSINIT_t);
910
911 return parse_body(env, xsinit);
312caa8e 912}
14dd3ad8 913#endif
312caa8e
CS
914
915STATIC void *
14dd3ad8 916S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e
CS
917{
918 dTHR;
919 int argc = PL_origargc;
920 char **argv = PL_origargv;
312caa8e
CS
921 char *scriptname = NULL;
922 int fdscript = -1;
923 VOL bool dosearch = FALSE;
924 char *validarg = "";
925 AV* comppadlist;
926 register SV *sv;
927 register char *s;
f4c556ac 928 char *cddir = Nullch;
312caa8e 929
3280af22 930 sv_setpvn(PL_linestr,"",0);
79cb57f6 931 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
932 SAVEFREESV(sv);
933 init_main_stash();
54310121 934
6224f72b
GS
935 for (argc--,argv++; argc > 0; argc--,argv++) {
936 if (argv[0][0] != '-' || !argv[0][1])
937 break;
938#ifdef DOSUID
939 if (*validarg)
940 validarg = " PHOOEY ";
941 else
942 validarg = argv[0];
13281fa4 943#endif
6224f72b
GS
944 s = argv[0]+1;
945 reswitch:
946 switch (*s) {
729a02f2
GS
947 case 'C':
948#ifdef WIN32
c0932edc 949 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
950 /* FALL THROUGH */
951#endif
1d5472a9
GS
952#ifndef PERL_STRICT_CR
953 case '\r':
954#endif
6224f72b
GS
955 case ' ':
956 case '0':
957 case 'F':
958 case 'a':
959 case 'c':
960 case 'd':
961 case 'D':
962 case 'h':
963 case 'i':
964 case 'l':
965 case 'M':
966 case 'm':
967 case 'n':
968 case 'p':
969 case 's':
970 case 'u':
971 case 'U':
972 case 'v':
599cee73
PM
973 case 'W':
974 case 'X':
6224f72b 975 case 'w':
155aba94 976 if ((s = moreswitches(s)))
6224f72b
GS
977 goto reswitch;
978 break;
33b78306 979
6224f72b 980 case 'T':
3280af22 981 PL_tainting = TRUE;
6224f72b
GS
982 s++;
983 goto reswitch;
f86702cc 984
6224f72b 985 case 'e':
bf4acbe4
GS
986#ifdef MACOS_TRADITIONAL
987 /* ignore -e for Dev:Pseudo argument */
988 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
989 break;
990#endif
3280af22 991 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 992 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 993 if (!PL_e_script) {
79cb57f6 994 PL_e_script = newSVpvn("",0);
0cb96387 995 filter_add(read_e_script, NULL);
6224f72b
GS
996 }
997 if (*++s)
3280af22 998 sv_catpv(PL_e_script, s);
6224f72b 999 else if (argv[1]) {
3280af22 1000 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1001 argc--,argv++;
1002 }
1003 else
cea2e8a9 1004 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1005 sv_catpv(PL_e_script, "\n");
6224f72b 1006 break;
afe37c7d 1007
6224f72b
GS
1008 case 'I': /* -I handled both here and in moreswitches() */
1009 forbid_setid("-I");
1010 if (!*++s && (s=argv[1]) != Nullch) {
1011 argc--,argv++;
1012 }
6224f72b 1013 if (s && *s) {
0df16ed7
GS
1014 char *p;
1015 STRLEN len = strlen(s);
1016 p = savepvn(s, len);
9c8a64f0 1017 incpush(p, TRUE, TRUE);
0df16ed7
GS
1018 sv_catpvn(sv, "-I", 2);
1019 sv_catpvn(sv, p, len);
1020 sv_catpvn(sv, " ", 1);
6224f72b 1021 Safefree(p);
0df16ed7
GS
1022 }
1023 else
a67e862a 1024 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1025 break;
1026 case 'P':
1027 forbid_setid("-P");
3280af22 1028 PL_preprocess = TRUE;
6224f72b
GS
1029 s++;
1030 goto reswitch;
1031 case 'S':
1032 forbid_setid("-S");
1033 dosearch = TRUE;
1034 s++;
1035 goto reswitch;
1036 case 'V':
3280af22
NIS
1037 if (!PL_preambleav)
1038 PL_preambleav = newAV();
1039 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1040 if (*++s != ':') {
3280af22 1041 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1042#ifdef VMS
6b88bc9c 1043 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1044#else
3280af22 1045 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1046#endif
3280af22 1047 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1048# ifdef DEBUGGING
3280af22 1049 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1050# endif
6224f72b 1051# ifdef MULTIPLICITY
8f872242 1052 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1053# endif
b363f7ed
GS
1054# ifdef USE_THREADS
1055 sv_catpv(PL_Sv," USE_THREADS");
1056# endif
ac5e8965
JH
1057# ifdef USE_ITHREADS
1058 sv_catpv(PL_Sv," USE_ITHREADS");
1059# endif
10cc9d2a
JH
1060# ifdef USE_64_BIT_INT
1061 sv_catpv(PL_Sv," USE_64_BIT_INT");
1062# endif
1063# ifdef USE_64_BIT_ALL
1064 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1065# endif
1066# ifdef USE_LONG_DOUBLE
1067 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1068# endif
53430762
JH
1069# ifdef USE_LARGE_FILES
1070 sv_catpv(PL_Sv," USE_LARGE_FILES");
1071# endif
ac5e8965
JH
1072# ifdef USE_SOCKS
1073 sv_catpv(PL_Sv," USE_SOCKS");
1074# endif
b363f7ed
GS
1075# ifdef PERL_OBJECT
1076 sv_catpv(PL_Sv," PERL_OBJECT");
1077# endif
1078# ifdef PERL_IMPLICIT_CONTEXT
1079 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1080# endif
1081# ifdef PERL_IMPLICIT_SYS
1082 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1083# endif
3280af22 1084 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1085
6224f72b
GS
1086#if defined(LOCAL_PATCH_COUNT)
1087 if (LOCAL_PATCH_COUNT > 0) {
1088 int i;
3280af22 1089 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1090 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1091 if (PL_localpatches[i])
cea2e8a9 1092 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1093 }
1094 }
1095#endif
cea2e8a9 1096 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1097#ifdef __DATE__
1098# ifdef __TIME__
cea2e8a9 1099 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1100# else
cea2e8a9 1101 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1102# endif
1103#endif
3280af22 1104 sv_catpv(PL_Sv, "; \
6224f72b
GS
1105$\"=\"\\n \"; \
1106@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1107print \" \\%ENV:\\n @env\\n\" if @env; \
1108print \" \\@INC:\\n @INC\\n\";");
1109 }
1110 else {
3280af22
NIS
1111 PL_Sv = newSVpv("config_vars(qw(",0);
1112 sv_catpv(PL_Sv, ++s);
1113 sv_catpv(PL_Sv, "))");
6224f72b
GS
1114 s += strlen(s);
1115 }
3280af22 1116 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1117 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1118 goto reswitch;
1119 case 'x':
3280af22 1120 PL_doextract = TRUE;
6224f72b
GS
1121 s++;
1122 if (*s)
f4c556ac 1123 cddir = s;
6224f72b
GS
1124 break;
1125 case 0:
1126 break;
1127 case '-':
1128 if (!*++s || isSPACE(*s)) {
1129 argc--,argv++;
1130 goto switch_end;
1131 }
1132 /* catch use of gnu style long options */
1133 if (strEQ(s, "version")) {
1134 s = "v";
1135 goto reswitch;
1136 }
1137 if (strEQ(s, "help")) {
1138 s = "h";
1139 goto reswitch;
1140 }
1141 s--;
1142 /* FALL THROUGH */
1143 default:
cea2e8a9 1144 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1145 }
1146 }
6224f72b 1147 switch_end:
54310121 1148
f675dbe5
CB
1149 if (
1150#ifndef SECURE_INTERNAL_GETENV
1151 !PL_tainting &&
1152#endif
0df16ed7
GS
1153 (s = PerlEnv_getenv("PERL5OPT")))
1154 {
74288ac8
GS
1155 while (isSPACE(*s))
1156 s++;
1157 if (*s == '-' && *(s+1) == 'T')
1158 PL_tainting = TRUE;
1159 else {
1160 while (s && *s) {
1161 while (isSPACE(*s))
1162 s++;
1163 if (*s == '-') {
1164 s++;
1165 if (isSPACE(*s))
1166 continue;
1167 }
1168 if (!*s)
1169 break;
1170 if (!strchr("DIMUdmw", *s))
cea2e8a9 1171 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 1172 s = moreswitches(s);
6224f72b 1173 }
6224f72b
GS
1174 }
1175 }
a0d0e21e 1176
6224f72b
GS
1177 if (!scriptname)
1178 scriptname = argv[0];
3280af22 1179 if (PL_e_script) {
6224f72b
GS
1180 argc++,argv--;
1181 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1182 }
1183 else if (scriptname == Nullch) {
1184#ifdef MSDOS
1185 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1186 moreswitches("h");
1187#endif
1188 scriptname = "-";
1189 }
1190
1191 init_perllib();
1192
1193 open_script(scriptname,dosearch,sv,&fdscript);
1194
1195 validate_suid(validarg, scriptname,fdscript);
1196
64ca3a65 1197#ifndef PERL_MICRO
0b5b802d
GS
1198#if defined(SIGCHLD) || defined(SIGCLD)
1199 {
1200#ifndef SIGCHLD
1201# define SIGCHLD SIGCLD
1202#endif
1203 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1204 if (sigstate == SIG_IGN) {
1205 if (ckWARN(WARN_SIGNAL))
1206 Perl_warner(aTHX_ WARN_SIGNAL,
1207 "Can't ignore signal CHLD, forcing to default");
1208 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1209 }
1210 }
1211#endif
64ca3a65 1212#endif
0b5b802d 1213
bf4acbe4
GS
1214#ifdef MACOS_TRADITIONAL
1215 if (PL_doextract || gMacPerl_AlwaysExtract) {
1216#else
f4c556ac 1217 if (PL_doextract) {
bf4acbe4 1218#endif
6224f72b 1219 find_beginning();
f4c556ac
GS
1220 if (cddir && PerlDir_chdir(cddir) < 0)
1221 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1222
1223 }
6224f72b 1224
3280af22
NIS
1225 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1226 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1227 CvUNIQUE_on(PL_compcv);
1228
1229 PL_comppad = newAV();
1230 av_push(PL_comppad, Nullsv);
1231 PL_curpad = AvARRAY(PL_comppad);
1232 PL_comppad_name = newAV();
1233 PL_comppad_name_fill = 0;
1234 PL_min_intro_pending = 0;
1235 PL_padix = 0;
6224f72b 1236#ifdef USE_THREADS
79cb57f6 1237 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1238 PL_curpad[0] = (SV*)newAV();
1239 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1240 CvOWNER(PL_compcv) = 0;
1241 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1242 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1243#endif /* USE_THREADS */
1244
1245 comppadlist = newAV();
1246 AvREAL_off(comppadlist);
3280af22
NIS
1247 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1248 av_store(comppadlist, 1, (SV*)PL_comppad);
1249 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS
1250
1251 boot_core_UNIVERSAL();
9a34ef1d 1252#ifndef PERL_MICRO
09bef843 1253 boot_core_xsutils();
9a34ef1d 1254#endif
6224f72b
GS
1255
1256 if (xsinit)
0cb96387 1257 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1258#ifndef PERL_MICRO
ed79a026 1259#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1260 init_os_extras();
6224f72b 1261#endif
64ca3a65 1262#endif
6224f72b 1263
29209bc5 1264#ifdef USE_SOCKS
1b9c9cf5
DH
1265# ifdef HAS_SOCKS5_INIT
1266 socks5_init(argv[0]);
1267# else
29209bc5 1268 SOCKSinit(argv[0]);
1b9c9cf5 1269# endif
29209bc5
JH
1270#endif
1271
6224f72b
GS
1272 init_predump_symbols();
1273 /* init_postdump_symbols not currently designed to be called */
1274 /* more than once (ENV isn't cleared first, for example) */
1275 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1276 if (!PL_do_undump)
6224f72b
GS
1277 init_postdump_symbols(argc,argv,env);
1278
1279 init_lexer();
1280
1281 /* now parse the script */
1282
1283 SETERRNO(0,SS$_NORMAL);
3280af22 1284 PL_error_count = 0;
bf4acbe4
GS
1285#ifdef MACOS_TRADITIONAL
1286 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1287 if (PL_minus_c)
1288 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1289 else {
1290 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1291 MacPerl_MPWFileName(PL_origfilename));
1292 }
1293 }
1294#else
3280af22
NIS
1295 if (yyparse() || PL_error_count) {
1296 if (PL_minus_c)
cea2e8a9 1297 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1298 else {
cea2e8a9 1299 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1300 PL_origfilename);
6224f72b
GS
1301 }
1302 }
bf4acbe4 1303#endif
57843af0 1304 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1305 PL_curstash = PL_defstash;
1306 PL_preprocess = FALSE;
1307 if (PL_e_script) {
1308 SvREFCNT_dec(PL_e_script);
1309 PL_e_script = Nullsv;
6224f72b
GS
1310 }
1311
1312 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1313 SvREFCNT_dec(PL_rs);
1314 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1315 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1316 if (PL_do_undump)
6224f72b
GS
1317 my_unexec();
1318
57843af0
GS
1319 if (isWARN_ONCE) {
1320 SAVECOPFILE(PL_curcop);
1321 SAVECOPLINE(PL_curcop);
3280af22 1322 gv_check(PL_defstash);
57843af0 1323 }
6224f72b
GS
1324
1325 LEAVE;
1326 FREETMPS;
1327
1328#ifdef MYMALLOC
1329 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1330 dump_mstats("after compilation:");
1331#endif
1332
1333 ENTER;
3280af22 1334 PL_restartop = 0;
312caa8e 1335 return NULL;
6224f72b
GS
1336}
1337
954c1994
GS
1338/*
1339=for apidoc perl_run
1340
1341Tells a Perl interpreter to run. See L<perlembed>.
1342
1343=cut
1344*/
1345
6224f72b 1346int
0cb96387 1347perl_run(pTHXx)
6224f72b 1348{
de616352 1349 dTHR;
6224f72b 1350 I32 oldscope;
14dd3ad8 1351 int ret = 0;
db36c5a1 1352 dJMPENV;
cea2e8a9
GS
1353#ifdef USE_THREADS
1354 dTHX;
1355#endif
6224f72b 1356
3280af22 1357 oldscope = PL_scopestack_ix;
6224f72b 1358
14dd3ad8 1359#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1360 redo_body:
14dd3ad8
GS
1361 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1362#else
1363 JMPENV_PUSH(ret);
1364#endif
6224f72b
GS
1365 switch (ret) {
1366 case 1:
1367 cxstack_ix = -1; /* start context stack again */
312caa8e 1368 goto redo_body;
14dd3ad8
GS
1369 case 0: /* normal completion */
1370#ifndef PERL_FLEXIBLE_EXCEPTIONS
1371 redo_body:
1372 run_body(oldscope);
1373#endif
1374 /* FALL THROUGH */
1375 case 2: /* my_exit() */
3280af22 1376 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1377 LEAVE;
1378 FREETMPS;
3280af22 1379 PL_curstash = PL_defstash;
865be832 1380 if (PL_endav && !PL_minus_c)
3280af22 1381 call_list(oldscope, PL_endav);
6224f72b
GS
1382#ifdef MYMALLOC
1383 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1384 dump_mstats("after execution: ");
1385#endif
14dd3ad8
GS
1386 ret = STATUS_NATIVE_EXPORT;
1387 break;
6224f72b 1388 case 3:
312caa8e
CS
1389 if (PL_restartop) {
1390 POPSTACK_TO(PL_mainstack);
1391 goto redo_body;
6224f72b 1392 }
bf49b057 1393 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1394 FREETMPS;
14dd3ad8
GS
1395 ret = 1;
1396 break;
6224f72b
GS
1397 }
1398
14dd3ad8
GS
1399 JMPENV_POP;
1400 return ret;
312caa8e
CS
1401}
1402
14dd3ad8 1403#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1404STATIC void *
14dd3ad8 1405S_vrun_body(pTHX_ va_list args)
312caa8e 1406{
312caa8e
CS
1407 I32 oldscope = va_arg(args, I32);
1408
14dd3ad8
GS
1409 return run_body(oldscope);
1410}
1411#endif
1412
1413
1414STATIC void *
1415S_run_body(pTHX_ I32 oldscope)
1416{
1417 dTHR;
1418
6224f72b 1419 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1420 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1421
3280af22 1422 if (!PL_restartop) {
6224f72b
GS
1423 DEBUG_x(dump_all());
1424 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1425 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1426 PTR2UV(thr)));
6224f72b 1427
3280af22 1428 if (PL_minus_c) {
bf4acbe4
GS
1429#ifdef MACOS_TRADITIONAL
1430 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1431#else
bf49b057 1432 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1433#endif
6224f72b
GS
1434 my_exit(0);
1435 }
3280af22 1436 if (PERLDB_SINGLE && PL_DBsingle)
312caa8e 1437 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1438 if (PL_initav)
1439 call_list(oldscope, PL_initav);
6224f72b
GS
1440 }
1441
1442 /* do it */
1443
3280af22 1444 if (PL_restartop) {
533c011a 1445 PL_op = PL_restartop;
3280af22 1446 PL_restartop = 0;
cea2e8a9 1447 CALLRUNOPS(aTHX);
6224f72b 1448 }
3280af22
NIS
1449 else if (PL_main_start) {
1450 CvDEPTH(PL_main_cv) = 1;
533c011a 1451 PL_op = PL_main_start;
cea2e8a9 1452 CALLRUNOPS(aTHX);
6224f72b
GS
1453 }
1454
f6b3007c
JH
1455 my_exit(0);
1456 /* NOTREACHED */
312caa8e 1457 return NULL;
6224f72b
GS
1458}
1459
954c1994
GS
1460/*
1461=for apidoc p||get_sv
1462
1463Returns the SV of the specified Perl scalar. If C<create> is set and the
1464Perl variable does not exist then it will be created. If C<create> is not
1465set and the variable does not exist then NULL is returned.
1466
1467=cut
1468*/
1469
6224f72b 1470SV*
864dbfa3 1471Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1472{
1473 GV *gv;
1474#ifdef USE_THREADS
1475 if (name[1] == '\0' && !isALPHA(name[0])) {
1476 PADOFFSET tmp = find_threadsv(name);
1477 if (tmp != NOT_IN_PAD) {
1478 dTHR;
1479 return THREADSV(tmp);
1480 }
1481 }
1482#endif /* USE_THREADS */
1483 gv = gv_fetchpv(name, create, SVt_PV);
1484 if (gv)
1485 return GvSV(gv);
1486 return Nullsv;
1487}
1488
954c1994
GS
1489/*
1490=for apidoc p||get_av
1491
1492Returns the AV of the specified Perl array. If C<create> is set and the
1493Perl variable does not exist then it will be created. If C<create> is not
1494set and the variable does not exist then NULL is returned.
1495
1496=cut
1497*/
1498
6224f72b 1499AV*
864dbfa3 1500Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1501{
1502 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1503 if (create)
1504 return GvAVn(gv);
1505 if (gv)
1506 return GvAV(gv);
1507 return Nullav;
1508}
1509
954c1994
GS
1510/*
1511=for apidoc p||get_hv
1512
1513Returns the HV of the specified Perl hash. If C<create> is set and the
1514Perl variable does not exist then it will be created. If C<create> is not
1515set and the variable does not exist then NULL is returned.
1516
1517=cut
1518*/
1519
6224f72b 1520HV*
864dbfa3 1521Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1522{
a0d0e21e
LW
1523 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1524 if (create)
1525 return GvHVn(gv);
1526 if (gv)
1527 return GvHV(gv);
1528 return Nullhv;
1529}
1530
954c1994
GS
1531/*
1532=for apidoc p||get_cv
1533
1534Returns the CV of the specified Perl subroutine. If C<create> is set and
1535the Perl subroutine does not exist then it will be declared (which has the
1536same effect as saying C<sub name;>). If C<create> is not set and the
1537subroutine does not exist then NULL is returned.
1538
1539=cut
1540*/
1541
a0d0e21e 1542CV*
864dbfa3 1543Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1544{
1545 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1546 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1547 /* XXX this is probably not what they think they're getting.
1548 * It has the same effect as "sub name;", i.e. just a forward
1549 * declaration! */
8ebc5c01 1550 if (create && !GvCVu(gv))
774d564b 1551 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1552 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1553 Nullop,
a0d0e21e
LW
1554 Nullop);
1555 if (gv)
8ebc5c01 1556 return GvCVu(gv);
a0d0e21e
LW
1557 return Nullcv;
1558}
1559
79072805
LW
1560/* Be sure to refetch the stack pointer after calling these routines. */
1561
954c1994
GS
1562/*
1563=for apidoc p||call_argv
1564
1565Performs a callback to the specified Perl sub. See L<perlcall>.
1566
1567=cut
1568*/
1569
a0d0e21e 1570I32
864dbfa3 1571Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
8ac85365
NIS
1572
1573 /* See G_* flags in cop.h */
1574 /* null terminated arg list */
8990e307 1575{
a0d0e21e 1576 dSP;
8990e307 1577
924508f0 1578 PUSHMARK(SP);
a0d0e21e 1579 if (argv) {
8990e307 1580 while (*argv) {
a0d0e21e 1581 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1582 argv++;
1583 }
a0d0e21e 1584 PUTBACK;
8990e307 1585 }
864dbfa3 1586 return call_pv(sub_name, flags);
8990e307
LW
1587}
1588
954c1994
GS
1589/*
1590=for apidoc p||call_pv
1591
1592Performs a callback to the specified Perl sub. See L<perlcall>.
1593
1594=cut
1595*/
1596
a0d0e21e 1597I32
864dbfa3 1598Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1599 /* name of the subroutine */
1600 /* See G_* flags in cop.h */
a0d0e21e 1601{
864dbfa3 1602 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1603}
1604
954c1994
GS
1605/*
1606=for apidoc p||call_method
1607
1608Performs a callback to the specified Perl method. The blessed object must
1609be on the stack. See L<perlcall>.
1610
1611=cut
1612*/
1613
a0d0e21e 1614I32
864dbfa3 1615Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1616 /* name of the subroutine */
1617 /* See G_* flags in cop.h */
a0d0e21e 1618{
968b3946 1619 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1620}
1621
1622/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1623/*
1624=for apidoc p||call_sv
1625
1626Performs a callback to the Perl sub whose name is in the SV. See
1627L<perlcall>.
1628
1629=cut
1630*/
1631
a0d0e21e 1632I32
864dbfa3 1633Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1634 /* See G_* flags in cop.h */
a0d0e21e 1635{
924508f0 1636 dSP;
a0d0e21e 1637 LOGOP myop; /* fake syntax tree node */
968b3946 1638 UNOP method_op;
aa689395 1639 I32 oldmark;
a0d0e21e 1640 I32 retval;
a0d0e21e 1641 I32 oldscope;
54310121 1642 bool oldcatch = CATCH_GET;
6224f72b 1643 int ret;
533c011a 1644 OP* oldop = PL_op;
db36c5a1 1645 dJMPENV;
1e422769 1646
a0d0e21e
LW
1647 if (flags & G_DISCARD) {
1648 ENTER;
1649 SAVETMPS;
1650 }
1651
aa689395 1652 Zero(&myop, 1, LOGOP);
54310121 1653 myop.op_next = Nullop;
f51d4af5 1654 if (!(flags & G_NOARGS))
aa689395 1655 myop.op_flags |= OPf_STACKED;
54310121
PP
1656 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1657 (flags & G_ARRAY) ? OPf_WANT_LIST :
1658 OPf_WANT_SCALAR);
462e5cf6 1659 SAVEOP();
533c011a 1660 PL_op = (OP*)&myop;
aa689395 1661
3280af22
NIS
1662 EXTEND(PL_stack_sp, 1);
1663 *++PL_stack_sp = sv;
aa689395 1664 oldmark = TOPMARK;
3280af22 1665 oldscope = PL_scopestack_ix;
a0d0e21e 1666
3280af22 1667 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1668 /* Handle first BEGIN of -d. */
3280af22 1669 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1670 /* Try harder, since this may have been a sighandler, thus
1671 * curstash may be meaningless. */
3280af22 1672 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1673 && !(flags & G_NODEBUG))
533c011a 1674 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1675
968b3946
GS
1676 if (flags & G_METHOD) {
1677 Zero(&method_op, 1, UNOP);
1678 method_op.op_next = PL_op;
1679 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1680 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1681 PL_op = (OP*)&method_op;
968b3946
GS
1682 }
1683
312caa8e 1684 if (!(flags & G_EVAL)) {
0cdb2077 1685 CATCH_SET(TRUE);
14dd3ad8 1686 call_body((OP*)&myop, FALSE);
312caa8e 1687 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1688 CATCH_SET(oldcatch);
312caa8e
CS
1689 }
1690 else {
d78bda3d 1691 myop.op_other = (OP*)&myop;
3280af22 1692 PL_markstack_ptr--;
4633a7c4
LW
1693 /* we're trying to emulate pp_entertry() here */
1694 {
c09156bb 1695 register PERL_CONTEXT *cx;
54310121 1696 I32 gimme = GIMME_V;
4633a7c4
LW
1697
1698 ENTER;
1699 SAVETMPS;
1700
968b3946 1701 push_return(Nullop);
1d76a5c3 1702 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1703 PUSHEVAL(cx, 0, 0);
533c011a 1704 PL_eval_root = PL_op; /* Only needed so that goto works right. */
4633a7c4 1705
faef0170 1706 PL_in_eval = EVAL_INEVAL;
4633a7c4 1707 if (flags & G_KEEPERR)
faef0170 1708 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1709 else
38a03e6e 1710 sv_setpv(ERRSV,"");
4633a7c4 1711 }
3280af22 1712 PL_markstack_ptr++;
a0d0e21e 1713
14dd3ad8
GS
1714#ifdef PERL_FLEXIBLE_EXCEPTIONS
1715 redo_body:
1716 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1717 (OP*)&myop, FALSE);
14dd3ad8
GS
1718#else
1719 JMPENV_PUSH(ret);
1720#endif
6224f72b
GS
1721 switch (ret) {
1722 case 0:
14dd3ad8
GS
1723#ifndef PERL_FLEXIBLE_EXCEPTIONS
1724 redo_body:
1725 call_body((OP*)&myop, FALSE);
1726#endif
312caa8e
CS
1727 retval = PL_stack_sp - (PL_stack_base + oldmark);
1728 if (!(flags & G_KEEPERR))
1729 sv_setpv(ERRSV,"");
a0d0e21e 1730 break;
6224f72b 1731 case 1:
f86702cc 1732 STATUS_ALL_FAILURE;
a0d0e21e 1733 /* FALL THROUGH */
6224f72b 1734 case 2:
a0d0e21e 1735 /* my_exit() was called */
3280af22 1736 PL_curstash = PL_defstash;
a0d0e21e 1737 FREETMPS;
14dd3ad8 1738 JMPENV_POP;
cc3604b1 1739 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1740 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1741 my_exit_jump();
a0d0e21e 1742 /* NOTREACHED */
6224f72b 1743 case 3:
3280af22 1744 if (PL_restartop) {
533c011a 1745 PL_op = PL_restartop;
3280af22 1746 PL_restartop = 0;
312caa8e 1747 goto redo_body;
a0d0e21e 1748 }
3280af22 1749 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1750 if (flags & G_ARRAY)
1751 retval = 0;
1752 else {
1753 retval = 1;
3280af22 1754 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1755 }
312caa8e 1756 break;
a0d0e21e 1757 }
a0d0e21e 1758
3280af22 1759 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1760 SV **newsp;
1761 PMOP *newpm;
1762 I32 gimme;
c09156bb 1763 register PERL_CONTEXT *cx;
a0a2876f
LW
1764 I32 optype;
1765
1766 POPBLOCK(cx,newpm);
1767 POPEVAL(cx);
1768 pop_return();
3280af22 1769 PL_curpm = newpm;
a0a2876f 1770 LEAVE;
a0d0e21e 1771 }
14dd3ad8 1772 JMPENV_POP;
a0d0e21e 1773 }
1e422769 1774
a0d0e21e 1775 if (flags & G_DISCARD) {
3280af22 1776 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1777 retval = 0;
1778 FREETMPS;
1779 LEAVE;
1780 }
533c011a 1781 PL_op = oldop;
a0d0e21e
LW
1782 return retval;
1783}
1784
14dd3ad8 1785#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1786STATIC void *
14dd3ad8 1787S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1788{
1789 OP *myop = va_arg(args, OP*);
1790 int is_eval = va_arg(args, int);
1791
14dd3ad8 1792 call_body(myop, is_eval);
312caa8e
CS
1793 return NULL;
1794}
14dd3ad8 1795#endif
312caa8e
CS
1796
1797STATIC void
14dd3ad8 1798S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e
CS
1799{
1800 dTHR;
1801
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)
8ac85365
NIS
1824
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
MB
2033 {
2034 dTHR;
b21ed0a9 2035 numlen = 0; /* disallow underscores */
dff6d3cd 2036 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2037 SvREFCNT_dec(PL_nrs);
c07a80fd 2038 if (rschar & ~((U8)~0))
3280af22 2039 PL_nrs = &PL_sv_undef;
c07a80fd 2040 else if (!rschar && numlen >= 2)
79cb57f6 2041 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2042 else {
2043 char ch = rschar;
79cb57f6 2044 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2045 }
2046 return s + numlen;
a863c7d1 2047 }
46487f74
GS
2048 case 'C':
2049 PL_widesyscalls = TRUE;
2050 s++;
2051 return s;
2304df62 2052 case 'F':
3280af22
NIS
2053 PL_minus_F = TRUE;
2054 PL_splitstr = savepv(s + 1);
2304df62
AD
2055 s += strlen(s);
2056 return s;
79072805 2057 case 'a':
3280af22 2058 PL_minus_a = TRUE;
79072805
LW
2059 s++;
2060 return s;
2061 case 'c':
3280af22 2062 PL_minus_c = TRUE;
79072805
LW
2063 s++;
2064 return s;
2065 case 'd':
bbce6d69 2066 forbid_setid("-d");
4633a7c4 2067 s++;
70c94a19
RR
2068 /* The following permits -d:Mod to accepts arguments following an =
2069 in the fashion that -MSome::Mod does. */
2070 if (*s == ':' || *s == '=') {
2071 char *start;
2072 SV *sv;
2073 sv = newSVpv("use Devel::", 0);
2074 start = ++s;
2075 /* We now allow -d:Module=Foo,Bar */
2076 while(isALNUM(*s) || *s==':') ++s;
2077 if (*s != '=')
2078 sv_catpv(sv, start);
2079 else {
2080 sv_catpvn(sv, start, s-start);
2081 sv_catpv(sv, " split(/,/,q{");
2082 sv_catpv(sv, ++s);
2083 sv_catpv(sv, "})");
2084 }
4633a7c4 2085 s += strlen(s);
70c94a19 2086 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2087 }
ed094faf 2088 if (!PL_perldb) {
3280af22 2089 PL_perldb = PERLDB_ALL;
a0d0e21e 2090 init_debugger();
ed094faf 2091 }
79072805
LW
2092 return s;
2093 case 'D':
0453d815 2094 {
79072805 2095#ifdef DEBUGGING
bbce6d69 2096 forbid_setid("-D");
79072805 2097 if (isALPHA(s[1])) {
8b73bbec 2098 static char debopts[] = "psltocPmfrxuLHXDS";
79072805
LW
2099 char *d;
2100
93a17b20 2101 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2102 PL_debug |= 1 << (d - debopts);
79072805
LW
2103 }
2104 else {
3280af22 2105 PL_debug = atoi(s+1);
79072805
LW
2106 for (s++; isDIGIT(*s); s++) ;
2107 }
3280af22 2108 PL_debug |= 0x80000000;
79072805 2109#else
0453d815
PM
2110 dTHR;
2111 if (ckWARN_d(WARN_DEBUGGING))
2112 Perl_warner(aTHX_ WARN_DEBUGGING,
2113 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2114 for (s++; isALNUM(*s); s++) ;
79072805
LW
2115#endif
2116 /*SUPPRESS 530*/
2117 return s;
0453d815 2118 }
4633a7c4 2119 case 'h':
3280af22 2120 usage(PL_origargv[0]);
6ad3d225 2121 PerlProc_exit(0);
79072805 2122 case 'i':
3280af22
NIS
2123 if (PL_inplace)
2124 Safefree(PL_inplace);
2125 PL_inplace = savepv(s+1);
79072805 2126 /*SUPPRESS 530*/
3280af22 2127 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2128 if (*s) {
fb73857a 2129 *s++ = '\0';
7b8d334a
GS
2130 if (*s == '-') /* Additional switches on #! line. */
2131 s++;
2132 }
fb73857a
PP
2133 return s;
2134 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2135 forbid_setid("-I");
fb73857a
PP
2136 ++s;
2137 while (*s && isSPACE(*s))
2138 ++s;
2139 if (*s) {
774d564b 2140 char *e, *p;
0df16ed7
GS
2141 p = s;
2142 /* ignore trailing spaces (possibly followed by other switches) */
2143 do {
2144 for (e = p; *e && !isSPACE(*e); e++) ;
2145 p = e;
2146 while (isSPACE(*p))
2147 p++;
2148 } while (*p && *p != '-');
2149 e = savepvn(s, e-s);
9c8a64f0 2150 incpush(e, TRUE, TRUE);
0df16ed7
GS
2151 Safefree(e);
2152 s = p;
2153 if (*s == '-')
2154 s++;
79072805
LW
2155 }
2156 else
a67e862a 2157 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2158 return s;
79072805 2159 case 'l':
3280af22 2160 PL_minus_l = TRUE;
79072805 2161 s++;
3280af22
NIS
2162 if (PL_ors)
2163 Safefree(PL_ors);
79072805 2164 if (isDIGIT(*s)) {
3280af22
NIS
2165 PL_ors = savepv("\n");
2166 PL_orslen = 1;
b21ed0a9 2167 numlen = 0; /* disallow underscores */
dff6d3cd 2168 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2169 s += numlen;
2170 }
2171 else {
a863c7d1 2172 dTHR;
3280af22
NIS
2173 if (RsPARA(PL_nrs)) {
2174 PL_ors = "\n\n";
2175 PL_orslen = 2;
c07a80fd
PP
2176 }
2177 else
3280af22
NIS
2178 PL_ors = SvPV(PL_nrs, PL_orslen);
2179 PL_ors = savepvn(PL_ors, PL_orslen);
79072805
LW
2180 }
2181 return s;
1a30305b 2182 case 'M':
bbce6d69 2183 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2184 /* FALL THROUGH */
2185 case 'm':
bbce6d69 2186 forbid_setid("-m"); /* XXX ? */
1a30305b 2187 if (*++s) {
a5f75d66 2188 char *start;
11343788 2189 SV *sv;
a5f75d66
AD
2190 char *use = "use ";
2191 /* -M-foo == 'no foo' */
2192 if (*s == '-') { use = "no "; ++s; }
11343788 2193 sv = newSVpv(use,0);
a5f75d66 2194 start = s;
1a30305b 2195 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2196 while(isALNUM(*s) || *s==':') ++s;
2197 if (*s != '=') {
11343788 2198 sv_catpv(sv, start);
c07a80fd
PP
2199 if (*(start-1) == 'm') {
2200 if (*s != '\0')
cea2e8a9 2201 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2202 sv_catpv( sv, " ()");
c07a80fd
PP
2203 }
2204 } else {
6df41af2 2205 if (s == start)
be98fb35
GS
2206 Perl_croak(aTHX_ "Module name required with -%c option",
2207 s[-1]);
11343788
MB
2208 sv_catpvn(sv, start, s-start);
2209 sv_catpv(sv, " split(/,/,q{");
2210 sv_catpv(sv, ++s);
2211 sv_catpv(sv, "})");
c07a80fd 2212 }
1a30305b 2213 s += strlen(s);
5c831c24 2214 if (!PL_preambleav)
3280af22
NIS
2215 PL_preambleav = newAV();
2216 av_push(PL_preambleav, sv);
1a30305b
PP
2217 }
2218 else
cea2e8a9 2219 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2220 return s;
79072805 2221 case 'n':
3280af22 2222 PL_minus_n = TRUE;
79072805
LW
2223 s++;
2224 return s;
2225 case 'p':
3280af22 2226 PL_minus_p = TRUE;
79072805
LW
2227 s++;
2228 return s;
2229 case 's':
bbce6d69 2230 forbid_setid("-s");
3280af22 2231 PL_doswitches = TRUE;
79072805
LW
2232 s++;
2233 return s;
463ee0b2 2234 case 'T':
3280af22 2235 if (!PL_tainting)
cea2e8a9 2236 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2237 s++;
2238 return s;
79072805 2239 case 'u':
bf4acbe4
GS
2240#ifdef MACOS_TRADITIONAL
2241 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2242#endif
3280af22 2243 PL_do_undump = TRUE;
79072805
LW
2244 s++;
2245 return s;
2246 case 'U':
3280af22 2247 PL_unsafe = TRUE;
79072805
LW
2248 s++;
2249 return s;
2250 case 'v':
b0e47665 2251 PerlIO_printf(PerlIO_stdout(),
d2560b70 2252 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2253 PL_patchlevel, ARCHNAME));
fb73857a
PP
2254#if defined(LOCAL_PATCH_COUNT)
2255 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2256 PerlIO_printf(PerlIO_stdout(),
2257 "\n(with %d registered patch%s, "
2258 "see perl -V for more detail)",
2259 (int)LOCAL_PATCH_COUNT,
2260 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2261#endif
1a30305b 2262
b0e47665
GS
2263 PerlIO_printf(PerlIO_stdout(),
2264 "\n\nCopyright 1987-2000, Larry Wall\n");
eae9c151
JH
2265#ifdef MACOS_TRADITIONAL
2266 PerlIO_printf(PerlIO_stdout(),
2267 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2268#endif
79072805 2269#ifdef MSDOS
b0e47665
GS
2270 PerlIO_printf(PerlIO_stdout(),
2271 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2272#endif
2273#ifdef DJGPP
b0e47665
GS
2274 PerlIO_printf(PerlIO_stdout(),
2275 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2276 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2277#endif
79072805 2278#ifdef OS2
b0e47665
GS
2279 PerlIO_printf(PerlIO_stdout(),
2280 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2281 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2282#endif
79072805 2283#ifdef atarist
b0e47665
GS
2284 PerlIO_printf(PerlIO_stdout(),
2285 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2286#endif
a3f9223b 2287#ifdef __BEOS__
b0e47665
GS
2288 PerlIO_printf(PerlIO_stdout(),
2289 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2290#endif
1d84e8df 2291#ifdef MPE
b0e47665
GS
2292 PerlIO_printf(PerlIO_stdout(),
2293 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2294#endif
9d116dd7 2295#ifdef OEMVS
b0e47665
GS
2296 PerlIO_printf(PerlIO_stdout(),
2297 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2298#endif
495c5fdc 2299#ifdef __VOS__
b0e47665
GS
2300 PerlIO_printf(PerlIO_stdout(),
2301 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2302#endif
092bebab 2303#ifdef __OPEN_VM
b0e47665
GS
2304 PerlIO_printf(PerlIO_stdout(),
2305 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2306#endif
a1a0e61e 2307#ifdef POSIX_BC
b0e47665
GS
2308 PerlIO_printf(PerlIO_stdout(),
2309 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2310#endif
61ae2fbf 2311#ifdef __MINT__
b0e47665
GS
2312 PerlIO_printf(PerlIO_stdout(),
2313 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2314#endif
f83d2536 2315#ifdef EPOC
b0e47665
GS
2316 PerlIO_printf(PerlIO_stdout(),
2317 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2318#endif
baed7233
DL
2319#ifdef BINARY_BUILD_NOTICE
2320 BINARY_BUILD_NOTICE;
2321#endif
b0e47665
GS
2322 PerlIO_printf(PerlIO_stdout(),
2323 "\n\
79072805 2324Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2325GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2326Complete documentation for Perl, including FAQ lists, should be found on\n\
2327this system using `man perl' or `perldoc perl'. If you have access to the\n\
2328Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2329 PerlProc_exit(0);
79072805 2330 case 'w':
599cee73
PM
2331 if (! (PL_dowarn & G_WARN_ALL_MASK))
2332 PL_dowarn |= G_WARN_ON;
2333 s++;
2334 return s;
2335 case 'W':
2336 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2337 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2338 s++;
2339 return s;
2340 case 'X':
2341 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2342 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2343 s++;
2344 return s;
a0d0e21e 2345 case '*':
79072805
LW
2346 case ' ':
2347 if (s[1] == '-') /* Additional switches on #! line. */
2348 return s+2;
2349 break;
a0d0e21e 2350 case '-':
79072805 2351 case 0:
51882d45 2352#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2353 case '\r':
2354#endif
79072805
LW
2355 case '\n':
2356 case '\t':
2357 break;
aa689395
PP
2358#ifdef ALTERNATE_SHEBANG
2359 case 'S': /* OS/2 needs -S on "extproc" line. */
2360 break;
2361#endif
a0d0e21e 2362 case 'P':
3280af22 2363 if (PL_preprocess)
a0d0e21e
LW
2364 return s+1;
2365 /* FALL THROUGH */
79072805 2366 default:
cea2e8a9 2367 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2368 }
2369 return Nullch;
2370}
2371
2372/* compliments of Tom Christiansen */
2373
2374/* unexec() can be found in the Gnu emacs distribution */
ee580363 2375/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2376
2377void
864dbfa3 2378Perl_my_unexec(pTHX)
79072805
LW
2379{
2380#ifdef UNEXEC
46fc3d4c
PP
2381 SV* prog;
2382 SV* file;
ee580363 2383 int status = 1;
79072805
LW
2384 extern int etext;
2385
ee580363 2386 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2387 sv_catpv(prog, "/perl");
6b88bc9c 2388 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2389 sv_catpv(file, ".perldump");
79072805 2390
ee580363
GS
2391 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2392 /* unexec prints msg to stderr in case of failure */
6ad3d225 2393 PerlProc_exit(status);
79072805 2394#else
a5f75d66
AD
2395# ifdef VMS
2396# include <lib$routines.h>
2397 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2398# else
79072805 2399 ABORT(); /* for use with undump */
aa689395 2400# endif
a5f75d66 2401#endif
79072805
LW
2402}
2403
cb68f92d
GS
2404/* initialize curinterp */
2405STATIC void
cea2e8a9 2406S_init_interp(pTHX)
cb68f92d
GS
2407{
2408
066ef5b5 2409#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2410#define I_REINIT \
6b88bc9c
GS
2411 STMT_START { \
2412 PL_chopset = " \n-"; \
2413 PL_copline = NOLINE; \
2414 PL_curcop = &PL_compiling;\
2415 PL_curcopdb = NULL; \
2416 PL_dbargs = 0; \
3967c732 2417 PL_dumpindent = 4; \
6b88bc9c
GS
2418 PL_laststatval = -1; \
2419 PL_laststype = OP_STAT; \
2420 PL_maxscream = -1; \
2421 PL_maxsysfd = MAXSYSFD; \
2422 PL_statname = Nullsv; \
2423 PL_tmps_floor = -1; \
2424 PL_tmps_ix = -1; \
2425 PL_op_mask = NULL; \
6b88bc9c
GS
2426 PL_laststatval = -1; \
2427 PL_laststype = OP_STAT; \
2428 PL_mess_sv = Nullsv; \
2429 PL_splitstr = " "; \
2430 PL_generation = 100; \
2431 PL_exitlist = NULL; \
2432 PL_exitlistlen = 0; \
2433 PL_regindent = 0; \
2434 PL_in_clean_objs = FALSE; \
2435 PL_in_clean_all = FALSE; \
2436 PL_profiledata = NULL; \
2437 PL_rsfp = Nullfp; \
2438 PL_rsfp_filters = Nullav; \
24d3c518 2439 PL_dirty = FALSE; \
cb68f92d 2440 } STMT_END
9666903d 2441 I_REINIT;
066ef5b5
GS
2442#else
2443# ifdef MULTIPLICITY
2444# define PERLVAR(var,type)
51371543 2445# define PERLVARA(var,n,type)
cea2e8a9 2446# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2447# if defined(USE_THREADS)
2448# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2449# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2450# else /* !USE_THREADS */
2451# define PERLVARI(var,type,init) aTHX->var = init;
2452# define PERLVARIC(var,type,init) aTHX->var = init;
2453# endif /* USE_THREADS */
cea2e8a9 2454# else
c5be433b
GS
2455# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2456# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2457# endif
066ef5b5
GS
2458# include "intrpvar.h"
2459# ifndef USE_THREADS
2460# include "thrdvar.h"
2461# endif
2462# undef PERLVAR
51371543 2463# undef PERLVARA
066ef5b5
GS
2464# undef PERLVARI
2465# undef PERLVARIC
3967c732 2466# else
066ef5b5 2467# define PERLVAR(var,type)
51371543 2468# define PERLVARA(var,n,type)
533c011a
NIS
2469# define PERLVARI(var,type,init) PL_##var = init;
2470# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2471# include "intrpvar.h"
2472# ifndef USE_THREADS
2473# include "thrdvar.h"
2474# endif
2475# undef PERLVAR
51371543 2476# undef PERLVARA
066ef5b5
GS
2477# undef PERLVARI
2478# undef PERLVARIC
2479# endif
cb68f92d
GS
2480#endif
2481
cb68f92d
GS
2482}
2483
76e3520e 2484STATIC void
cea2e8a9 2485S_init_main_stash(pTHX)
79072805 2486{
11343788 2487 dTHR;
463ee0b2 2488 GV *gv;
6e72f9df
PP
2489
2490 /* Note that strtab is a rather special HV. Assumptions are made
2491 about not iterating on it, and not adding tie magic to it.
2492 It is properly deallocated in perl_destruct() */
3280af22 2493 PL_strtab = newHV();
5f08fbcd
GS
2494#ifdef USE_THREADS
2495 MUTEX_INIT(&PL_strtab_mutex);
2496#endif
3280af22
NIS
2497 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2498 hv_ksplit(PL_strtab, 512);
6e72f9df 2499
3280af22 2500 PL_curstash = PL_defstash = newHV();
79cb57f6 2501 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2502 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2503 SvREFCNT_dec(GvHV(gv));
3280af22 2504 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2505 SvREADONLY_on(gv);
3280af22
NIS
2506 HvNAME(PL_defstash) = savepv("main");
2507 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2508 GvMULTI_on(PL_incgv);
2509 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2510 GvMULTI_on(PL_hintgv);
2511 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2512 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2513 GvMULTI_on(PL_errgv);
2514 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2515 GvMULTI_on(PL_replgv);
cea2e8a9 2516 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2517 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2518 sv_setpvn(ERRSV, "", 0);
3280af22 2519 PL_curstash = PL_defstash;
11faa288 2520 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2521 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2522 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2523 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2524 /* We must init $/ before switches are processed. */
864dbfa3 2525 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2526}
2527
76e3520e 2528STATIC void
cea2e8a9 2529S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2530{
0f15f207 2531 dTHR;
2a92aaa0 2532
6c4ab083 2533 *fdscript = -1;
79072805 2534
3280af22
NIS
2535 if (PL_e_script) {
2536 PL_origfilename = savepv("-e");
96436eeb 2537 }
6c4ab083
GS
2538 else {
2539 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2540 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2541
2542 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2543 char *s = scriptname + 8;
2544 *fdscript = atoi(s);
2545 while (isDIGIT(*s))
2546 s++;
2547 if (*s) {
2548 scriptname = savepv(s + 1);
3280af22
NIS
2549 Safefree(PL_origfilename);
2550 PL_origfilename = scriptname;
6c4ab083
GS
2551 }
2552 }
2553 }
2554
f4dd75d9
GS
2555#ifdef USE_ITHREADS
2556 Safefree(CopFILE(PL_curcop));
2557#else
2558 SvREFCNT_dec(CopFILEGV(PL_curcop));
2559#endif
57843af0 2560 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2561 if (strEQ(PL_origfilename,"-"))
79072805 2562 scriptname = "";
01f988be 2563 if (*fdscript >= 0) {
3280af22 2564 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2565#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2566 if (PL_rsfp)
2567 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2568#endif
2569 }
3280af22 2570 else if (PL_preprocess) {
46fc3d4c 2571 char *cpp_cfg = CPPSTDIN;
79cb57f6 2572 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2573 SV *cmd = NEWSV(0,0);
2574
2575 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2576 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2577 sv_catpv(cpp, cpp_cfg);
79072805 2578
0df16ed7 2579 sv_catpvn(sv, "-I", 2);
fed7345c 2580 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2581
52853b95 2582#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2583 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2584sed %s -e \"/^[^#]/b\" \
2585 -e \"/^#[ ]*include[ ]/b\" \
2586 -e \"/^#[ ]*define[ ]/b\" \
2587 -e \"/^#[ ]*if[ ]/b\" \
2588 -e \"/^#[ ]*ifdef[ ]/b\" \
2589 -e \"/^#[ ]*ifndef[ ]/b\" \
2590 -e \"/^#[ ]*else/b\" \
2591 -e \"/^#[ ]*elif[ ]/b\" \
2592 -e \"/^#[ ]*undef[ ]/b\" \
2593 -e \"/^#[ ]*endif/b\" \
2594 -e \"s/^#.*//\" \
894356b3 2595 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2596 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2597#else
092bebab 2598# ifdef __OPEN_VM
cea2e8a9 2599 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2600%s %s -e '/^[^#]/b' \
2601 -e '/^#[ ]*include[ ]/b' \
2602 -e '/^#[ ]*define[ ]/b' \
2603 -e '/^#[ ]*if[ ]/b' \
2604 -e '/^#[ ]*ifdef[ ]/b' \
2605 -e '/^#[ ]*ifndef[ ]/b' \
2606 -e '/^#[ ]*else/b' \
2607 -e '/^#[ ]*elif[ ]/b' \
2608 -e '/^#[ ]*undef[ ]/b' \
2609 -e '/^#[ ]*endif/b' \
2610 -e 's/^[ ]*#.*//' \
894356b3 2611 %s | %"SVf" %"SVf" %s",
092bebab 2612# else
cea2e8a9 2613 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2614%s %s -e '/^[^#]/b' \
2615 -e '/^#[ ]*include[ ]/b' \
2616 -e '/^#[ ]*define[ ]/b' \
2617 -e '/^#[ ]*if[ ]/b' \
2618 -e '/^#[ ]*ifdef[ ]/b' \
2619 -e '/^#[ ]*ifndef[ ]/b' \
2620 -e '/^#[ ]*else/b' \
2621 -e '/^#[ ]*elif[ ]/b' \
2622 -e '/^#[ ]*undef[ ]/b' \
2623 -e '/^#[ ]*endif/b' \
2624 -e 's/^[ ]*#.*//' \
894356b3 2625 %s | %"SVf" -C %"SVf" %s",
092bebab 2626# endif
79072805
LW
2627#ifdef LOC_SED
2628 LOC_SED,
2629#else
2630 "sed",
2631#endif
3280af22 2632 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2633#endif
46fc3d4c 2634 scriptname, cpp, sv, CPPMINUS);
3280af22 2635 PL_doextract = FALSE;
79072805 2636#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2637 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2638#ifdef HAS_SETEUID
b28d0864 2639 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2640#else
2641#ifdef HAS_SETREUID
b28d0864 2642 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2643#else
2644#ifdef HAS_SETRESUID
b28d0864 2645 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2646#else
b28d0864 2647 PerlProc_setuid(PL_uid);
79072805
LW
2648#endif
2649#endif
85e6fe83 2650#endif
b28d0864 2651 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2652 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2653 }
2654#endif /* IAMSUID */
3280af22 2655 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2656 SvREFCNT_dec(cmd);
2657 SvREFCNT_dec(cpp);
79072805
LW
2658 }
2659 else if (!*scriptname) {
bbce6d69 2660 forbid_setid("program input from stdin");
3280af22 2661 PL_rsfp = PerlIO_stdin();
79072805 2662 }
96436eeb 2663 else {
3280af22 2664 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2665#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2666 if (PL_rsfp)
2667 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2668#endif
2669 }
3280af22 2670 if (!PL_rsfp) {
13281fa4 2671#ifdef DOSUID
a687059c 2672#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2673 if (PL_euid &&
cc49e20b 2674 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2675 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2676 {
46fc3d4c 2677 /* try again */
a7cb1f99 2678 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2679 (int)PERL_REVISION, (int)PERL_VERSION,
2680 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2681 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2682 }
2683#endif
2684#endif
cea2e8a9 2685 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2686 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2687 }
79072805 2688}
8d063cd8 2689
7b89560d
JH
2690/* Mention
2691 * I_SYSSTATVFS HAS_FSTATVFS
2692 * I_SYSMOUNT
c890dc6c 2693 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2694 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2695 * here so that metaconfig picks them up. */
2696
104d25b7 2697#ifdef IAMSUID
864dbfa3 2698STATIC int
e688b231 2699S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2700{
0545a864
JH
2701 int check_okay = 0; /* able to do all the required sys/libcalls */
2702 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2703/*
ad27e871 2704 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2705 * fstatvfs() is UNIX98.
0545a864 2706 * fstatfs() is 4.3 BSD.
ad27e871 2707 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2708 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2709 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2710 */
2711
6439433f
JH
2712#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2713
2714# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2715 defined(HAS_FSTATVFS)
2716# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2717 struct statvfs stfs;
6439433f 2718
104d25b7
JH
2719 check_okay = fstatvfs(fd, &stfs) == 0;
2720 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f
JH
2721# endif /* fstatvfs */
2722
2723# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2724 defined(PERL_MOUNT_NOSUID) && \
2725 defined(HAS_FSTATFS) && \
2726 defined(HAS_STRUCT_STATFS) && \
2727 defined(HAS_STRUCT_STATFS_F_FLAGS)
2728# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2729 struct statfs stfs;
6439433f 2730
104d25b7 2731 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2732 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2733# endif /* fstatfs */
2734
2735# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2736 defined(PERL_MOUNT_NOSUID) && \
2737 defined(HAS_FSTAT) && \
2738 defined(HAS_USTAT) && \
2739 defined(HAS_GETMNT) && \
2740 defined(HAS_STRUCT_FS_DATA) && \
2741 defined(NOSTAT_ONE)
2742# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2743 struct stat fdst;
6439433f 2744
0545a864 2745 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2746 struct ustat us;
2747 if (ustat(fdst.st_dev, &us) == 0) {
2748 struct fs_data fsd;
2749 /* NOSTAT_ONE here because we're not examining fields which
2750 * vary between that case and STAT_ONE. */
ad27e871 2751 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2752 size_t cmplen = sizeof(us.f_fname);
2753 if (sizeof(fsd.fd_req.path) < cmplen)
2754 cmplen = sizeof(fsd.fd_req.path);
2755 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2756 fdst.st_dev == fsd.fd_req.dev) {
2757 check_okay = 1;
2758 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2759 }
2760 }
2761 }
2762 }
0545a864 2763 }
6439433f
JH
2764# endif /* fstat+ustat+getmnt */
2765
2766# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2767 defined(HAS_GETMNTENT) && \
2768 defined(HAS_HASMNTOPT) && \
2769 defined(MNTOPT_NOSUID)
2770# define FD_ON_NOSUID_CHECK_OKAY
2771 FILE *mtab = fopen("/etc/mtab", "r");
2772 struct mntent *entry;
2773 struct stat stb, fsb;
104d25b7
JH
2774
2775 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2776 while (entry = getmntent(mtab)) {
2777 if (stat(entry->mnt_dir, &fsb) == 0
2778 && fsb.st_dev == stb.st_dev)
2779 {
2780 /* found the filesystem */
2781 check_okay = 1;
2782 if (hasmntopt(entry, MNTOPT_NOSUID))
2783 on_nosuid = 1;
2784 break;
2785 } /* A single fs may well fail its stat(). */
2786 }
104d25b7
JH
2787 }
2788 if (mtab)
6439433f
JH
2789 fclose(mtab);
2790# endif /* getmntent+hasmntopt */
0545a864 2791
104d25b7 2792 if (!check_okay)
0545a864 2793 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2794 return on_nosuid;
2795}
2796#endif /* IAMSUID */
2797
76e3520e 2798STATIC void
cea2e8a9 2799S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2800{
155aba94 2801#ifdef IAMSUID
96436eeb 2802 int which;
155aba94 2803#endif
96436eeb 2804
13281fa4
LW
2805 /* do we need to emulate setuid on scripts? */
2806
2807 /* This code is for those BSD systems that have setuid #! scripts disabled
2808 * in the kernel because of a security problem. Merely defining DOSUID
2809 * in perl will not fix that problem, but if you have disabled setuid
2810 * scripts in the kernel, this will attempt to emulate setuid and setgid
2811 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2812 * root version must be called suidperl or sperlN.NNN. If regular perl
2813 * discovers that it has opened a setuid script, it calls suidperl with
2814 * the same argv that it had. If suidperl finds that the script it has
2815 * just opened is NOT setuid root, it sets the effective uid back to the
2816 * uid. We don't just make perl setuid root because that loses the
2817 * effective uid we had before invoking perl, if it was different from the
2818 * uid.
13281fa4
LW
2819 *
2820 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2821 * be defined in suidperl only. suidperl must be setuid root. The
2822 * Configure script will set this up for you if you want it.
2823 */
a687059c 2824
13281fa4 2825#ifdef DOSUID
ea0efc06 2826 dTHR;
6e72f9df 2827 char *s, *s2;
a0d0e21e 2828
b28d0864 2829 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2830 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2831 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2832 I32 len;
2d8e6c8d 2833 STRLEN n_a;
13281fa4 2834
a687059c 2835#ifdef IAMSUID
fe14fcc3 2836#ifndef HAS_SETREUID
a687059c
LW
2837 /* On this access check to make sure the directories are readable,
2838 * there is actually a small window that the user could use to make
2839 * filename point to an accessible directory. So there is a faint
2840 * chance that someone could execute a setuid script down in a
2841 * non-accessible directory. I don't know what to do about that.
2842 * But I don't think it's too important. The manual lies when
2843 * it says access() is useful in setuid programs.
2844 */
cc49e20b 2845 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2846 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2847#else
2848 /* If we can swap euid and uid, then we can determine access rights
2849 * with a simple stat of the file, and then compare device and
2850 * inode to make sure we did stat() on the same file we opened.
2851 * Then we just have to make sure he or she can execute it.
2852 */
2853 {
2854 struct stat tmpstatbuf;
2855
85e6fe83
LW
2856 if (
2857#ifdef HAS_SETREUID
b28d0864 2858 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2859#else
2860# if HAS_SETRESUID
b28d0864 2861 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2862# endif
85e6fe83 2863#endif
b28d0864 2864 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2865 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2866 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2867 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2868#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2869 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2870 Perl_croak(aTHX_ "Permission denied");
104d25b7 2871#endif
b28d0864
NIS
2872 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2873 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2874 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2875 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2876 }
85e6fe83
LW
2877 if (
2878#ifdef HAS_SETREUID
b28d0864 2879 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2880#else
2881# if defined(HAS_SETRESUID)
b28d0864 2882 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2883# endif
85e6fe83 2884#endif
b28d0864 2885 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2886 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2887 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2888 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2889 }
fe14fcc3 2890#endif /* HAS_SETREUID */
a687059c
LW
2891#endif /* IAMSUID */
2892
b28d0864 2893 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2894 Perl_croak(aTHX_ "Permission denied");
b28d0864 2895 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2896 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2897 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2898 CopLINE_inc(PL_curcop);
6b88bc9c 2899 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2900 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2901 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2902 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2903 if (*s == ' ') s++;
45d8adaa 2904 while (!isSPACE(*s)) s++;
2d8e6c8d 2905 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2906 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2907 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2908 Perl_croak(aTHX_ "Not a perl script");
a687059c 2909 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2910 /*
2911 * #! arg must be what we saw above. They can invoke it by
2912 * mentioning suidperl explicitly, but they may not add any strange
2913 * arguments beyond what #! says if they do invoke suidperl that way.
2914 */
2915 len = strlen(validarg);
2916 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2917 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2918 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
2919
2920#ifndef IAMSUID
b28d0864
NIS
2921 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2922 PL_euid == PL_statbuf.st_uid)
2923 if (!PL_do_undump)
cea2e8a9 2924 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2925FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2926#endif /* IAMSUID */
13281fa4 2927
b28d0864
NIS
2928 if (PL_euid) { /* oops, we're not the setuid root perl */
2929 (void)PerlIO_close(PL_rsfp);
13281fa4 2930#ifndef IAMSUID
46fc3d4c 2931 /* try again */
a7cb1f99 2932 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2933 (int)PERL_REVISION, (int)PERL_VERSION,
2934 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2935#endif
cea2e8a9 2936 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2937 }
2938
b28d0864 2939 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2940#ifdef HAS_SETEGID
b28d0864 2941 (void)setegid(PL_statbuf.st_gid);
a687059c 2942#else
fe14fcc3 2943#ifdef HAS_SETREGID
b28d0864 2944 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
2945#else
2946#ifdef HAS_SETRESGID
b28d0864 2947 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2948#else
b28d0864 2949 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
2950#endif
2951#endif
85e6fe83 2952#endif
b28d0864 2953 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2954 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2955 }
b28d0864
NIS
2956 if (PL_statbuf.st_mode & S_ISUID) {
2957 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2958#ifdef HAS_SETEUID
b28d0864 2959 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2960#else
fe14fcc3 2961#ifdef HAS_SETREUID
b28d0864 2962 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
2963#else
2964#ifdef HAS_SETRESUID
b28d0864 2965 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2966#else
b28d0864 2967 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
2968#endif
2969#endif
85e6fe83 2970#endif
b28d0864 2971 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2972 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2973 }
b28d0864 2974 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2975#ifdef HAS_SETEUID
b28d0864 2976 (void)seteuid((Uid_t)PL_uid);
a687059c 2977#else
fe14fcc3 2978#ifdef HAS_SETREUID
b28d0864 2979 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2980#else
85e6fe83 2981#ifdef HAS_SETRESUID
b28d0864 2982 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2983#else
b28d0864 2984 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2985#endif
a687059c
LW
2986#endif
2987#endif
b28d0864 2988 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2989 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2990 }
748a9306 2991 init_ids();
b28d0864 2992 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2993 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
2994 }
2995#ifdef IAMSUID
6b88bc9c 2996 else if (PL_preprocess)
cea2e8a9 2997 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2998 else if (fdscript >= 0)
cea2e8a9 2999 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3000 else
cea2e8a9 3001 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3002
3003 /* We absolutely must clear out any saved ids here, so we */
3004 /* exec the real perl, substituting fd script for scriptname. */
3005 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3006 PerlIO_rewind(PL_rsfp);
3007 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3008 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3009 if (!PL_origargv[which])
cea2e8a9
GS
3010 Perl_croak(aTHX_ "Permission denied");
3011 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3012 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3013#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3014 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3015#endif
a7cb1f99 3016 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3017 (int)PERL_REVISION, (int)PERL_VERSION,
3018 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3019 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3020#endif /* IAMSUID */
a687059c 3021#else /* !DOSUID */
3280af22 3022 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3023#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
96827780 3024 dTHR;
b28d0864
NIS
3025 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3026 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3027 ||
b28d0864 3028 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3029 )
b28d0864 3030 if (!PL_do_undump)
cea2e8a9 3031 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3032FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3033#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3034 /* not set-id, must be wrapped */
a687059c 3035 }
13281fa4 3036#endif /* DOSUID */
79072805 3037}
13281fa4 3038
76e3520e 3039STATIC void
cea2e8a9 3040S_find_beginning(pTHX)
79072805 3041{
6e72f9df 3042 register char *s, *s2;
33b78306
LW
3043
3044 /* skip forward in input to the real script? */
3045
bbce6d69 3046 forbid_setid("-x");
bf4acbe4
GS
3047#ifdef MACOS_TRADITIONAL
3048 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3049
3050 while (PL_doextract || gMacPerl_AlwaysExtract) {
3051 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3052 if (!gMacPerl_AlwaysExtract)
3053 Perl_croak(aTHX_ "No Perl script found in input\n");
3054
3055 if (PL_doextract) /* require explicit override ? */
3056 if (!OverrideExtract(PL_origfilename))
3057 Perl_croak(aTHX_ "User aborted script\n");
3058 else
3059 PL_doextract = FALSE;
3060
3061 /* Pater peccavi, file does not have #! */
3062 PerlIO_rewind(PL_rsfp);
3063
3064 break;
3065 }
3066#else
3280af22
NIS
3067 while (PL_doextract) {
3068 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3069 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3070#endif
6e72f9df 3071 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS
3072 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3073 PL_doextract = FALSE;
6e72f9df
PP
3074 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3075 s2 = s;
3076 while (*s == ' ' || *s == '\t') s++;
3077 if (*s++ == '-') {
3078 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3079 if (strnEQ(s2-4,"perl",4))
3080 /*SUPPRESS 530*/
155aba94
GS
3081 while ((s = moreswitches(s)))
3082 ;
33b78306 3083 }
83025b21
LW
3084 }
3085 }
3086}
3087
afe37c7d 3088
76e3520e 3089STATIC void
cea2e8a9 3090S_init_ids(pTHX)
352d5a3a 3091{
d8eceb89
JH
3092 PL_uid = PerlProc_getuid();
3093 PL_euid = PerlProc_geteuid();
3094 PL_gid = PerlProc_getgid();
3095 PL_egid = PerlProc_getegid();
748a9306 3096#ifdef VMS
b28d0864
NIS
3097 PL_uid |= PL_gid << 16;
3098 PL_euid |= PL_egid << 16;
748a9306 3099#endif
3280af22 3100 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3101}
79072805 3102
76e3520e 3103STATIC void
cea2e8a9 3104S_forbid_setid(pTHX_ char *s)
bbce6d69 3105{
3280af22 3106 if (PL_euid != PL_uid)
cea2e8a9 3107 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3108 if (PL_egid != PL_gid)
cea2e8a9 3109 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3110}
3111
1ee4443e
IZ
3112void
3113Perl_init_debugger(pTHX)
748a9306 3114{
11343788 3115 dTHR;
1ee4443e
IZ
3116 HV *ostash = PL_curstash;
3117
3280af22
NIS
3118 PL_curstash = PL_debstash;
3119 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3120 AvREAL_off(PL_dbargs);
3121 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3122 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3123 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3124 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22
NIS
3125 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3126 sv_setiv(PL_DBsingle, 0);
3127 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3128 sv_setiv(PL_DBtrace, 0);
3129 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3130 sv_setiv(PL_DBsignal, 0);
1ee4443e 3131 PL_curstash = ostash;
352d5a3a
LW
3132}
3133
2ce36478
SM
3134#ifndef STRESS_REALLOC
3135#define REASONABLE(size) (size)
3136#else
3137#define REASONABLE(size) (1) /* unreasonable */
3138#endif
3139
11343788 3140void
cea2e8a9 3141Perl_init_stacks(pTHX)
79072805 3142{
e336de0d 3143 /* start with 128-item stack and 8K cxstack */
3280af22 3144 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3145 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3146 PL_curstackinfo->si_type = PERLSI_MAIN;
3147 PL_curstack = PL_curstackinfo->si_stack;
3148 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3149
3280af22
NIS
3150 PL_stack_base = AvARRAY(PL_curstack);
3151 PL_stack_sp = PL_stack_base;
3152 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3153
3280af22
NIS
3154 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3155 PL_tmps_floor = -1;
3156 PL_tmps_ix = -1;
3157 PL_tmps_max = REASONABLE(128);
8990e307 3158
3280af22
NIS
3159 New(54,PL_markstack,REASONABLE(32),I32);
3160 PL_markstack_ptr = PL_markstack;
3161 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3162
ce2f7c3b 3163 SET_MARK_OFFSET;
e336de0d 3164
3280af22
NIS
3165 New(54,PL_scopestack,REASONABLE(32),I32);
3166 PL_scopestack_ix = 0;
3167 PL_scopestack_max = REASONABLE(32);
79072805 3168
3280af22
NIS
3169 New(54,PL_savestack,REASONABLE(128),ANY);
3170 PL_savestack_ix = 0;
3171 PL_savestack_max = REASONABLE(128);
79072805 3172
3280af22
NIS
3173 New(54,PL_retstack,REASONABLE(16),OP*);
3174 PL_retstack_ix = 0;
3175 PL_retstack_max = REASONABLE(16);
378cc40b 3176}
33b78306 3177
2ce36478
SM
3178#undef REASONABLE
3179
76e3520e 3180STATIC void
cea2e8a9 3181S_nuke_stacks(pTHX)
6e72f9df 3182{
e858de61 3183 dTHR;
3280af22
NIS
3184 while (PL_curstackinfo->si_next)
3185 PL_curstackinfo = PL_curstackinfo->si_next;
3186 while (PL_curstackinfo) {
3187 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3188 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3189 Safefree(PL_curstackinfo->si_cxstack);
3190 Safefree(PL_curstackinfo);
3191 PL_curstackinfo = p;
e336de0d 3192 }
3280af22
NIS
3193 Safefree(PL_tmps_stack);
3194 Safefree(PL_markstack);
3195 Safefree(PL_scopestack);
3196 Safefree(PL_savestack);
3197 Safefree(PL_retstack);
378cc40b 3198}
33b78306 3199
76e3520e 3200#ifndef PERL_OBJECT
760ac839 3201static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3202#endif
7aa04957 3203
76e3520e 3204STATIC void
cea2e8a9 3205S_init_lexer(pTHX)
8990e307 3206{
76e3520e
GS
3207#ifdef PERL_OBJECT
3208 PerlIO *tmpfp;
3209#endif
3280af22
NIS
3210 tmpfp = PL_rsfp;
3211 PL_rsfp = Nullfp;
3212 lex_start(PL_linestr);
3213 PL_rsfp = tmpfp;
79cb57f6 3214 PL_subname = newSVpvn("main",4);
8990e307
LW
3215}
3216
76e3520e 3217STATIC void
cea2e8a9 3218S_init_predump_symbols(pTHX)
45d8adaa 3219{
11343788 3220 dTHR;
93a17b20 3221 GV *tmpgv;
af8c498a 3222 IO *io;
79072805 3223
864dbfa3 3224 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3225 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3226 GvMULTI_on(PL_stdingv);
af8c498a
GS
3227 io = GvIOp(PL_stdingv);
3228 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3229 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3230 GvMULTI_on(tmpgv);
af8c498a 3231 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3232
85e6fe83 3233 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3234 GvMULTI_on(tmpgv);
af8c498a
GS
3235 io = GvIOp(tmpgv);
3236 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3237 setdefout(tmpgv);
adbc6bb1 3238 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3239 GvMULTI_on(tmpgv);
af8c498a 3240 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3241
bf49b057
GS
3242 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3243 GvMULTI_on(PL_stderrgv);
3244 io = GvIOp(PL_stderrgv);
af8c498a 3245 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3246 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3247 GvMULTI_on(tmpgv);
af8c498a 3248 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3249
3280af22 3250 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3251
bf4acbe4
GS
3252 if (PL_osname)
3253 Safefree(PL_osname);
3254 PL_osname = savepv(OSNAME);
79072805 3255}
33b78306 3256
76e3520e 3257STATIC void
cea2e8a9 3258S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3259{
a863c7d1 3260 dTHR;
79072805
LW
3261 char *s;
3262 SV *sv;
3263 GV* tmpgv;
fe14fcc3 3264
79072805 3265 argc--,argv++; /* skip name of script */
3280af22 3266 if (PL_doswitches) {
79072805
LW
3267 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3268 if (!argv[0][1])
3269 break;
379d538a 3270 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3271 argc--,argv++;
3272 break;
3273 }
155aba94 3274 if ((s = strchr(argv[0], '='))) {
79072805 3275 *s++ = '\0';
85e6fe83 3276 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3277 }
3278 else
85e6fe83 3279 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3280 }
79072805 3281 }
3280af22
NIS
3282 PL_toptarget = NEWSV(0,0);
3283 sv_upgrade(PL_toptarget, SVt_PVFM);
3284 sv_setpvn(PL_toptarget, "", 0);
3285 PL_bodytarget = NEWSV(0,0);
3286 sv_upgrade(PL_bodytarget, SVt_PVFM);
3287 sv_setpvn(PL_bodytarget, "", 0);
3288 PL_formtarget = PL_bodytarget;
79072805 3289
bbce6d69 3290 TAINT;
155aba94 3291 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3292#ifdef MACOS_TRADITIONAL
3293 /* $0 is not majick on a Mac */
3294 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3295#else
3280af22 3296 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3297 magicname("0", "0", 1);
bf4acbe4 3298#endif
79072805 3299 }
155aba94 3300 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3301#ifdef OS2
23da6c43 3302 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3303#else
3280af22 3304 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3305#endif
155aba94 3306 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3307 GvMULTI_on(PL_argvgv);
3308 (void)gv_AVadd(PL_argvgv);
3309 av_clear(GvAVn(PL_argvgv));
79072805 3310 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3311 SV *sv = newSVpv(argv[0],0);
3312 av_push(GvAVn(PL_argvgv),sv);
3313 if (PL_widesyscalls)
e84ff256 3314 (void)sv_utf8_decode(sv);
79072805
LW
3315 }
3316 }
155aba94 3317 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3318 HV *hv;
3280af22
NIS
3319 GvMULTI_on(PL_envgv);
3320 hv = GvHVn(PL_envgv);
3321 hv_magic(hv, PL_envgv, 'E');
bf4acbe4 3322#if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
4633a7c4
LW
3323 /* Note that if the supplied env parameter is actually a copy
3324 of the global environ then it may now point to free'd memory
3325 if the environment has been modified since. To avoid this
3326 problem we treat env==NULL as meaning 'use the default'
3327 */
3328 if (!env)
3329 env = environ;
5aabfad6 3330 if (env != environ)
79072805
LW
3331 environ[0] = Nullch;
3332 for (; *env; env++) {
93a17b20 3333 if (!(s = strchr(*env,'=')))
79072805
LW
3334 continue;
3335 *s++ = '\0';
60ce6247 3336#if defined(MSDOS)
137443ea
PP
3337 (void)strupr(*env);
3338#endif
79072805
LW
3339 sv = newSVpv(s--,0);
3340 (void)hv_store(hv, *env, s - *env, sv, 0);
3341 *s = '=';
3e3baf6d
TB
3342#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3343 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 3344 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 3345#endif
fe14fcc3 3346 }
4550b24a
PP
3347#endif
3348#ifdef DYNAMIC_ENV_FETCH
3349 HvNAME(hv) = savepv(ENV_HV_NAME);
3350#endif
79072805 3351 }
bbce6d69 3352 TAINT_NOT;
155aba94 3353 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3354 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3355}
34de22dd 3356
76e3520e 3357STATIC void
cea2e8a9 3358S_init_perllib(pTHX)
34de22dd 3359{
85e6fe83 3360 char *s;
3280af22 3361 if (!PL_tainting) {
552a7a9b 3362#ifndef VMS
76e3520e 3363 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3364 if (s)
9c8a64f0 3365 incpush(s, TRUE, TRUE);
85e6fe83 3366 else
9c8a64f0 3367 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b
PP
3368#else /* VMS */
3369 /* Treat PERL5?LIB as a possible search list logical name -- the
3370 * "natural" VMS idiom for a Unix path string. We allow each
3371 * element to be a set of |-separated directories for compatibility.
3372 */
3373 char buf[256];
3374 int idx = 0;
3375 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3376 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3377 else
9c8a64f0 3378 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3379#endif /* VMS */
85e6fe83 3380 }
34de22dd 3381
c90c0ff4 3382/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3383 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3384*/
4633a7c4 3385#ifdef APPLLIB_EXP
9c8a64f0 3386 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3387#endif
4633a7c4 3388
fed7345c 3389#ifdef ARCHLIB_EXP
9c8a64f0 3390 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3391#endif
bf4acbe4
GS
3392#ifdef MACOS_TRADITIONAL
3393 {
3394 struct stat tmpstatbuf;
3395 SV * privdir = NEWSV(55, 0);
3396 char * macperl = PerlEnv_getenv("MACPERL");
3397
3398 if (!macperl)
3399 macperl = "";
3400
3401 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3402 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3403 incpush(SvPVX(privdir), TRUE, FALSE);
3404 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3405 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3406 incpush(SvPVX(privdir), TRUE, FALSE);
3407
3408 SvREFCNT_dec(privdir);
3409 }
3410 if (!PL_tainting)
3411 incpush(":", FALSE, FALSE);
3412#else
fed7345c 3413#ifndef PRIVLIB_EXP
65f19062 3414# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3415#endif
00dc2f4f 3416#if defined(WIN32)
9c8a64f0 3417 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3418#else
9c8a64f0 3419 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3420#endif
4633a7c4 3421
65f19062 3422#ifdef SITEARCH_EXP
3b290362
GS
3423 /* sitearch is always relative to sitelib on Windows for
3424 * DLL-based path intuition to work correctly */
3425# if !defined(WIN32)
9c8a64f0 3426 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS
3427# endif
3428#endif
3429
4633a7c4 3430#ifdef SITELIB_EXP
65f19062 3431# if defined(WIN32)
9c8a64f0 3432 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3433# else
9c8a64f0 3434 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS
3435# endif
3436#endif
189d1e8d 3437
65f19062 3438#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3439 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3440#endif
65f19062
GS
3441
3442#ifdef PERL_VENDORARCH_EXP
4ea817c6 3443 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS
3444 * DLL-based path intuition to work correctly */
3445# if !defined(WIN32)
9c8a64f0 3446 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3447# endif
4b03c463 3448#endif
65f19062
GS
3449
3450#ifdef PERL_VENDORLIB_EXP
3451# if defined(WIN32)
9c8a64f0 3452 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3453# else
9c8a64f0 3454 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3455# endif
a3635516 3456#endif
65f19062
GS
3457
3458#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3459 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3460#endif
65f19062 3461
3b777bb4
GS
3462#ifdef PERL_OTHERLIBDIRS
3463 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3464#endif
3465
3280af22 3466 if (!PL_tainting)
9c8a64f0 3467 incpush(".", FALSE, FALSE);
bf4acbe4 3468#endif /* MACOS_TRADITIONAL */
774d564b
PP
3469}
3470
ed79a026 3471#if defined(DOSISH) || defined(EPOC)