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Fix open.pm to work via XS-implemented method calls rather
[perl5.git] / perl.c
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CommitLineData
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1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
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5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
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8 */
9
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10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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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
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LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
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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
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155#endif /* FAKE_THREADS */
156#endif /* USE_THREADS */
ba869deb 157
8990e307 158#ifdef MULTIPLICITY
54aff467 159 init_interp();
ac27b0f5 160 PL_perl_destruct_level = 1;
54aff467
GS
161#else
162 if (PL_perl_destruct_level > 0)
163 init_interp();
164#endif
165
33f46ff6 166 /* Init the real globals (and main thread)? */
3280af22 167 if (!PL_linestr) {
1feb2720 168#ifdef USE_THREADS
533c011a 169 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
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();
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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
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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 255 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
256 /* Build version strings using "native" characters */
257 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
258 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
259 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS
260 *s = '\0';
261 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
262 SvPOK_on(PL_patchlevel);
263 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
264 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 265#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 266 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 267#endif
a7cb1f99
GS
268 ;
269 SvNOK_on(PL_patchlevel); /* dual valued */
270 SvUTF8_on(PL_patchlevel);
271 SvREADONLY_on(PL_patchlevel);
272 }
79072805 273
ab821d7f 274#if defined(LOCAL_PATCH_COUNT)
3280af22 275 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
276#endif
277
52853b95
GS
278#ifdef HAVE_INTERP_INTERN
279 sys_intern_init();
280#endif
281
4b556e6c 282 PerlIO_init(); /* Hook to IO system */
760ac839 283
3280af22
NIS
284 PL_fdpid = newAV(); /* for remembering popen pids by fd */
285 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 286 PL_errors = newSVpvn("",0);
8990e307 287
8990e307 288 ENTER;
79072805
LW
289}
290
954c1994
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291/*
292=for apidoc perl_destruct
293
294Shuts down a Perl interpreter. See L<perlembed>.
295
296=cut
297*/
298
79072805 299void
0cb96387 300perl_destruct(pTHXx)
79072805 301{
748a9306 302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 303 HV *hv;
1f2bfc8a 304#ifdef USE_THREADS
33f46ff6 305 Thread t;
cea2e8a9 306 dTHX;
1f2bfc8a 307#endif /* USE_THREADS */
8990e307 308
7766f137
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309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
311
11343788 312#ifdef USE_THREADS
0f15f207 313#ifndef FAKE_THREADS
8023c3ce
MB
314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 retry_cleanup:
533c011a 316 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 317 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 318 "perl_destruct: waiting for %d threads...\n",
533c011a 319 PL_nthreads - 1));
33f46ff6 320 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
323 AV *av;
c7848ba1 324 case THRf_ZOMBIE:
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
533c011a 329 PL_nthreads--;
8023c3ce
MB
330 /*
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
334 * all over again.
335 */
533c011a 336 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 337 JOIN(t, &av);
605e5515 338 SvREFCNT_dec((SV*)av);
bf49b057 339 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 340 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 341 goto retry_cleanup;
c7848ba1 342 case THRf_R_JOINABLE:
bf49b057 343 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 346 /*
c7848ba1
MB
347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
351 */
533c011a 352 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
353 DETACH(t);
354 MUTEX_UNLOCK(&t->mutex);
8023c3ce 355 goto retry_cleanup;
c7848ba1 356 default:
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
358 "perl_destruct: ignoring %p (state %u)\n",
359 t, ThrSTATE(t)));
360 MUTEX_UNLOCK(&t->mutex);
c7848ba1 361 /* fall through and out */
33f46ff6
MB
362 }
363 }
8023c3ce
MB
364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 367 while (PL_nthreads > 1)
11343788 368 {
bf49b057 369 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 370 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
371 PL_nthreads - 1));
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
373 }
374 /* At this point, we're the last thread */
533c011a 375 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
b57a092c 379 PL_nthreads--;
0f15f207 380#endif /* !defined(FAKE_THREADS) */
11343788
MB
381#endif /* USE_THREADS */
382
3280af22 383 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
384#ifdef DEBUGGING
385 {
386 char *s;
155aba94 387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
388 int i = atoi(s);
389 if (destruct_level < i)
390 destruct_level = i;
391 }
4633a7c4
LW
392 }
393#endif
394
8990e307 395 LEAVE;
a0d0e21e
LW
396 FREETMPS;
397
13621cfb 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
13621cfb
NIS
413 /* Tell PerlIO we are about to tear things apart in case
414 we have layers which are using resources that should
415 be cleaned up now.
416 */
417
418 PerlIO_destruct(aTHX);
419
3280af22 420 if (PL_sv_objcount) {
a0d0e21e
LW
421 /*
422 * Try to destruct global references. We do this first so that the
423 * destructors and destructees still exist. Some sv's might remain.
424 * Non-referenced objects are on their own.
425 */
a0d0e21e 426 sv_clean_objs();
8990e307
LW
427 }
428
5cd24f17 429 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
430 SvREFCNT_dec(PL_warnhook);
431 PL_warnhook = Nullsv;
432 SvREFCNT_dec(PL_diehook);
433 PL_diehook = Nullsv;
5cd24f17 434
4b556e6c 435 /* call exit list functions */
3280af22 436 while (PL_exitlistlen-- > 0)
0cb96387 437 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 438
3280af22 439 Safefree(PL_exitlist);
4b556e6c 440
a0d0e21e 441 if (destruct_level == 0){
8990e307 442
a0d0e21e 443 DEBUG_P(debprofdump());
ac27b0f5 444
a0d0e21e
LW
445 /* The exit() function will do everything that needs doing. */
446 return;
447 }
5dd60ef7 448
551a8b83
JH
449 /* jettison our possibly duplicated environment */
450
451#ifdef USE_ENVIRON_ARRAY
452 if (environ != PL_origenviron) {
453 I32 i;
454
455 for (i = 0; environ[i]; i++)
4b420006
JH
456 safesysfree(environ[i]);
457 /* Must use safesysfree() when working with environ. */
458 safesysfree(environ);
551a8b83
JH
459
460 environ = PL_origenviron;
461 }
462#endif
463
5f05dabc
PP
464 /* loosen bonds of global variables */
465
3280af22
NIS
466 if(PL_rsfp) {
467 (void)PerlIO_close(PL_rsfp);
468 PL_rsfp = Nullfp;
8ebc5c01
PP
469 }
470
471 /* Filters for program text */
3280af22
NIS
472 SvREFCNT_dec(PL_rsfp_filters);
473 PL_rsfp_filters = Nullav;
8ebc5c01
PP
474
475 /* switches */
3280af22
NIS
476 PL_preprocess = FALSE;
477 PL_minus_n = FALSE;
478 PL_minus_p = FALSE;
479 PL_minus_l = FALSE;
480 PL_minus_a = FALSE;
481 PL_minus_F = FALSE;
482 PL_doswitches = FALSE;
599cee73 483 PL_dowarn = G_WARN_OFF;
3280af22
NIS
484 PL_doextract = FALSE;
485 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
486 PL_unsafe = FALSE;
487
488 Safefree(PL_inplace);
489 PL_inplace = Nullch;
a7cb1f99 490 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
491
492 if (PL_e_script) {
493 SvREFCNT_dec(PL_e_script);
494 PL_e_script = Nullsv;
8ebc5c01
PP
495 }
496
497 /* magical thingies */
498
7889fe52
NIS
499 SvREFCNT_dec(PL_ofs_sv); /* $, */
500 PL_ofs_sv = Nullsv;
5f05dabc 501
7889fe52
NIS
502 SvREFCNT_dec(PL_ors_sv); /* $\ */
503 PL_ors_sv = Nullsv;
8ebc5c01 504
3280af22
NIS
505 SvREFCNT_dec(PL_rs); /* $/ */
506 PL_rs = Nullsv;
dc92893f 507
3280af22
NIS
508 SvREFCNT_dec(PL_nrs); /* $/ helper */
509 PL_nrs = Nullsv;
5f05dabc 510
d33b2eba
GS
511 PL_multiline = 0; /* $* */
512 Safefree(PL_osname); /* $^O */
513 PL_osname = Nullch;
5f05dabc 514
3280af22
NIS
515 SvREFCNT_dec(PL_statname);
516 PL_statname = Nullsv;
517 PL_statgv = Nullgv;
5f05dabc 518
8ebc5c01
PP
519 /* defgv, aka *_ should be taken care of elsewhere */
520
8ebc5c01 521 /* clean up after study() */
3280af22
NIS
522 SvREFCNT_dec(PL_lastscream);
523 PL_lastscream = Nullsv;
524 Safefree(PL_screamfirst);
525 PL_screamfirst = 0;
526 Safefree(PL_screamnext);
527 PL_screamnext = 0;
8ebc5c01 528
7d5ea4e7
GS
529 /* float buffer */
530 Safefree(PL_efloatbuf);
531 PL_efloatbuf = Nullch;
532 PL_efloatsize = 0;
533
8ebc5c01 534 /* startup and shutdown function lists */
3280af22
NIS
535 SvREFCNT_dec(PL_beginav);
536 SvREFCNT_dec(PL_endav);
7d30b5c4 537 SvREFCNT_dec(PL_checkav);
3280af22
NIS
538 SvREFCNT_dec(PL_initav);
539 PL_beginav = Nullav;
540 PL_endav = Nullav;
7d30b5c4 541 PL_checkav = Nullav;
3280af22 542 PL_initav = Nullav;
5618dfe8 543
8ebc5c01 544 /* shortcuts just get cleared */
3280af22 545 PL_envgv = Nullgv;
3280af22
NIS
546 PL_incgv = Nullgv;
547 PL_hintgv = Nullgv;
548 PL_errgv = Nullgv;
549 PL_argvgv = Nullgv;
550 PL_argvoutgv = Nullgv;
551 PL_stdingv = Nullgv;
bf49b057 552 PL_stderrgv = Nullgv;
3280af22
NIS
553 PL_last_in_gv = Nullgv;
554 PL_replgv = Nullgv;
5c831c24 555 PL_debstash = Nullhv;
8ebc5c01
PP
556
557 /* reset so print() ends up where we expect */
558 setdefout(Nullgv);
5c831c24 559
7a1c5554
GS
560 SvREFCNT_dec(PL_argvout_stack);
561 PL_argvout_stack = Nullav;
8ebc5c01 562
5c831c24
GS
563 SvREFCNT_dec(PL_modglobal);
564 PL_modglobal = Nullhv;
565 SvREFCNT_dec(PL_preambleav);
566 PL_preambleav = Nullav;
567 SvREFCNT_dec(PL_subname);
568 PL_subname = Nullsv;
569 SvREFCNT_dec(PL_linestr);
570 PL_linestr = Nullsv;
571 SvREFCNT_dec(PL_pidstatus);
572 PL_pidstatus = Nullhv;
573 SvREFCNT_dec(PL_toptarget);
574 PL_toptarget = Nullsv;
575 SvREFCNT_dec(PL_bodytarget);
576 PL_bodytarget = Nullsv;
577 PL_formtarget = Nullsv;
578
d33b2eba 579 /* free locale stuff */
b9582b6a 580#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
581 Safefree(PL_collation_name);
582 PL_collation_name = Nullch;
b9582b6a 583#endif
d33b2eba 584
b9582b6a 585#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
586 Safefree(PL_numeric_name);
587 PL_numeric_name = Nullch;
a453c169 588 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 589#endif
d33b2eba 590
5c831c24
GS
591 /* clear utf8 character classes */
592 SvREFCNT_dec(PL_utf8_alnum);
593 SvREFCNT_dec(PL_utf8_alnumc);
594 SvREFCNT_dec(PL_utf8_ascii);
595 SvREFCNT_dec(PL_utf8_alpha);
596 SvREFCNT_dec(PL_utf8_space);
597 SvREFCNT_dec(PL_utf8_cntrl);
598 SvREFCNT_dec(PL_utf8_graph);
599 SvREFCNT_dec(PL_utf8_digit);
600 SvREFCNT_dec(PL_utf8_upper);
601 SvREFCNT_dec(PL_utf8_lower);
602 SvREFCNT_dec(PL_utf8_print);
603 SvREFCNT_dec(PL_utf8_punct);
604 SvREFCNT_dec(PL_utf8_xdigit);
605 SvREFCNT_dec(PL_utf8_mark);
606 SvREFCNT_dec(PL_utf8_toupper);
607 SvREFCNT_dec(PL_utf8_tolower);
608 PL_utf8_alnum = Nullsv;
609 PL_utf8_alnumc = Nullsv;
610 PL_utf8_ascii = Nullsv;
611 PL_utf8_alpha = Nullsv;
612 PL_utf8_space = Nullsv;
613 PL_utf8_cntrl = Nullsv;
614 PL_utf8_graph = Nullsv;
615 PL_utf8_digit = Nullsv;
616 PL_utf8_upper = Nullsv;
617 PL_utf8_lower = Nullsv;
618 PL_utf8_print = Nullsv;
619 PL_utf8_punct = Nullsv;
620 PL_utf8_xdigit = Nullsv;
621 PL_utf8_mark = Nullsv;
622 PL_utf8_toupper = Nullsv;
623 PL_utf8_totitle = Nullsv;
624 PL_utf8_tolower = Nullsv;
625
971a9dd3
GS
626 if (!specialWARN(PL_compiling.cop_warnings))
627 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 628 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
629 if (!specialCopIO(PL_compiling.cop_io))
630 SvREFCNT_dec(PL_compiling.cop_io);
631 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
632#ifdef USE_ITHREADS
633 Safefree(CopFILE(&PL_compiling));
634 CopFILE(&PL_compiling) = Nullch;
635 Safefree(CopSTASHPV(&PL_compiling));
636#else
01724ea0 637 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
638 CopFILEGV(&PL_compiling) = Nullgv;
639 /* cop_stash is not refcounted */
01724ea0 640#endif
5c831c24 641
a0d0e21e 642 /* Prepare to destruct main symbol table. */
5f05dabc 643
3280af22
NIS
644 hv = PL_defstash;
645 PL_defstash = 0;
a0d0e21e 646 SvREFCNT_dec(hv);
5c831c24
GS
647 SvREFCNT_dec(PL_curstname);
648 PL_curstname = Nullsv;
a0d0e21e 649
5a844595
GS
650 /* clear queued errors */
651 SvREFCNT_dec(PL_errors);
652 PL_errors = Nullsv;
653
a0d0e21e 654 FREETMPS;
0453d815 655 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 656 if (PL_scopestack_ix != 0)
0453d815
PM
657 Perl_warner(aTHX_ WARN_INTERNAL,
658 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
659 (long)PL_scopestack_ix);
660 if (PL_savestack_ix != 0)
0453d815
PM
661 Perl_warner(aTHX_ WARN_INTERNAL,
662 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
663 (long)PL_savestack_ix);
664 if (PL_tmps_floor != -1)
0453d815 665 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 666 (long)PL_tmps_floor + 1);
a0d0e21e 667 if (cxstack_ix != -1)
0453d815 668 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 669 (long)cxstack_ix + 1);
a0d0e21e 670 }
8990e307
LW
671
672 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 673 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 674 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
675
676 /* the 2 is for PL_fdpid and PL_strtab */
677 while (PL_sv_count > 2 && sv_clean_all())
678 ;
679
d33b2eba
GS
680 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
681 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
682 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
683 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 684
d4777f27
GS
685 AvREAL_off(PL_fdpid); /* no surviving entries */
686 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
687 PL_fdpid = Nullav;
688
6c644e78
GS
689#ifdef HAVE_INTERP_INTERN
690 sys_intern_clear();
691#endif
692
6e72f9df
PP
693 /* Destruct the global string table. */
694 {
695 /* Yell and reset the HeVAL() slots that are still holding refcounts,
696 * so that sv_free() won't fail on them.
697 */
698 I32 riter;
699 I32 max;
700 HE *hent;
701 HE **array;
702
703 riter = 0;
3280af22
NIS
704 max = HvMAX(PL_strtab);
705 array = HvARRAY(PL_strtab);
6e72f9df
PP
706 hent = array[0];
707 for (;;) {
0453d815
PM
708 if (hent && ckWARN_d(WARN_INTERNAL)) {
709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
711 HeVAL(hent) - Nullsv, HeKEY(hent));
712 HeVAL(hent) = Nullsv;
713 hent = HeNEXT(hent);
714 }
715 if (!hent) {
716 if (++riter > max)
717 break;
718 hent = array[riter];
719 }
720 }
721 }
3280af22 722 SvREFCNT_dec(PL_strtab);
6e72f9df 723
e652bb2f 724#ifdef USE_ITHREADS
a0739874
DM
725 /* free the pointer table used for cloning */
726 ptr_table_free(PL_ptr_table);
53186e96 727#endif
a0739874 728
d33b2eba
GS
729 /* free special SVs */
730
731 SvREFCNT(&PL_sv_yes) = 0;
732 sv_clear(&PL_sv_yes);
733 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 734 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
735
736 SvREFCNT(&PL_sv_no) = 0;
737 sv_clear(&PL_sv_no);
738 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 739 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
740
741 SvREFCNT(&PL_sv_undef) = 0;
742 SvREADONLY_off(&PL_sv_undef);
d33b2eba 743
0453d815
PM
744 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
745 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 746
3280af22 747 Safefree(PL_origfilename);
3280af22 748 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
749 if (PL_reg_curpm)
750 Safefree(PL_reg_curpm);
82ba1be6 751 Safefree(PL_reg_poscache);
3280af22
NIS
752 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
753 Safefree(PL_op_mask);
cf36064f
GS
754 Safefree(PL_psig_ptr);
755 Safefree(PL_psig_name);
2c2666fc 756 Safefree(PL_bitcount);
ce08f86c 757 Safefree(PL_psig_pend);
6e72f9df 758 nuke_stacks();
3280af22 759 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 760
a0d0e21e 761 DEBUG_P(debprofdump());
11343788 762#ifdef USE_THREADS
5f08fbcd 763 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
764 MUTEX_DESTROY(&PL_sv_mutex);
765 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 766 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 767 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 768 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
769#ifdef EMULATE_ATOMIC_REFCOUNTS
770 MUTEX_DESTROY(&PL_svref_mutex);
771#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 772
8023c3ce 773 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
774 Safefree(SvPVX(PL_thrsv));
775 Safefree(SvANY(PL_thrsv));
776 Safefree(PL_thrsv);
777 PL_thrsv = Nullsv;
8023c3ce 778#endif /* USE_THREADS */
d33b2eba 779
612f20c3
GS
780 sv_free_arenas();
781
fc36a67e
PP
782 /* As the absolutely last thing, free the non-arena SV for mess() */
783
3280af22 784 if (PL_mess_sv) {
9c63abab
GS
785 /* it could have accumulated taint magic */
786 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
787 MAGIC* mg;
788 MAGIC* moremagic;
789 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
790 moremagic = mg->mg_moremagic;
14befaf4
DM
791 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
792 && mg->mg_len >= 0)
9c63abab
GS
793 Safefree(mg->mg_ptr);
794 Safefree(mg);
795 }
796 }
fc36a67e 797 /* we know that type >= SVt_PV */
155aba94 798 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
799 Safefree(SvPVX(PL_mess_sv));
800 Safefree(SvANY(PL_mess_sv));
801 Safefree(PL_mess_sv);
802 PL_mess_sv = Nullsv;
fc36a67e 803 }
79072805
LW
804}
805
954c1994
GS
806/*
807=for apidoc perl_free
808
809Releases a Perl interpreter. See L<perlembed>.
810
811=cut
812*/
813
79072805 814void
0cb96387 815perl_free(pTHXx)
79072805 816{
c5be433b 817#if defined(PERL_OBJECT)
7f0d82f7 818 PerlMem_free(this);
76e3520e 819#else
ce3e5b80
NIS
820# if defined(WIN32)
821# if defined(PERL_IMPLICIT_SYS)
1c0ca838 822 void *host = w32_internal_host;
ba247512 823 if (PerlProc_lasthost()) {
ce08f86c 824 PerlIO_cleanup();
ba247512 825 }
7f0d82f7 826 PerlMem_free(aTHXx);
1c0ca838 827 win32_delete_internal_host(host);
ce3e5b80 828#else
ce08f86c 829 PerlIO_cleanup();
ce3e5b80
NIS
830 PerlMem_free(aTHXx);
831#endif
1c0ca838
GS
832# else
833 PerlMem_free(aTHXx);
834# endif
76e3520e 835#endif
79072805
LW
836}
837
4b556e6c 838void
864dbfa3 839Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 840{
3280af22
NIS
841 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
842 PL_exitlist[PL_exitlistlen].fn = fn;
843 PL_exitlist[PL_exitlistlen].ptr = ptr;
844 ++PL_exitlistlen;
4b556e6c
JD
845}
846
954c1994
GS
847/*
848=for apidoc perl_parse
849
850Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
851
852=cut
853*/
854
79072805 855int
0cb96387 856perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 857{
6224f72b 858 I32 oldscope;
6224f72b 859 int ret;
db36c5a1 860 dJMPENV;
cea2e8a9
GS
861#ifdef USE_THREADS
862 dTHX;
863#endif
8d063cd8 864
a687059c
LW
865#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
866#ifdef IAMSUID
867#undef IAMSUID
cea2e8a9 868 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
869setuid perl scripts securely.\n");
870#endif
871#endif
872
8f1f23e8 873#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
874 _dyld_lookup_and_bind
875 ("__environ", (unsigned long *) &environ_pointer, NULL);
876#endif /* environ */
877
3280af22
NIS
878 PL_origargv = argv;
879 PL_origargc = argc;
fa6a1c44 880#ifdef USE_ENVIRON_ARRAY
3280af22 881 PL_origenviron = environ;
a0d0e21e
LW
882#endif
883
3280af22 884 if (PL_do_undump) {
a0d0e21e
LW
885
886 /* Come here if running an undumped a.out. */
887
3280af22
NIS
888 PL_origfilename = savepv(argv[0]);
889 PL_do_undump = FALSE;
a0d0e21e 890 cxstack_ix = -1; /* start label stack again */
748a9306 891 init_ids();
a0d0e21e
LW
892 init_postdump_symbols(argc,argv,env);
893 return 0;
894 }
895
3280af22
NIS
896 if (PL_main_root) {
897 PL_curpad = AvARRAY(PL_comppad);
898 op_free(PL_main_root);
899 PL_main_root = Nullop;
ff0cee69 900 }
3280af22
NIS
901 PL_main_start = Nullop;
902 SvREFCNT_dec(PL_main_cv);
903 PL_main_cv = Nullcv;
79072805 904
3280af22
NIS
905 time(&PL_basetime);
906 oldscope = PL_scopestack_ix;
599cee73 907 PL_dowarn = G_WARN_OFF;
f86702cc 908
14dd3ad8
GS
909#ifdef PERL_FLEXIBLE_EXCEPTIONS
910 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
911#else
912 JMPENV_PUSH(ret);
913#endif
6224f72b 914 switch (ret) {
312caa8e 915 case 0:
14dd3ad8
GS
916#ifndef PERL_FLEXIBLE_EXCEPTIONS
917 parse_body(env,xsinit);
918#endif
7d30b5c4
GS
919 if (PL_checkav)
920 call_list(oldscope, PL_checkav);
14dd3ad8
GS
921 ret = 0;
922 break;
6224f72b
GS
923 case 1:
924 STATUS_ALL_FAILURE;
925 /* FALL THROUGH */
926 case 2:
927 /* my_exit() was called */
3280af22 928 while (PL_scopestack_ix > oldscope)
6224f72b
GS
929 LEAVE;
930 FREETMPS;
3280af22 931 PL_curstash = PL_defstash;
7d30b5c4
GS
932 if (PL_checkav)
933 call_list(oldscope, PL_checkav);
14dd3ad8
GS
934 ret = STATUS_NATIVE_EXPORT;
935 break;
6224f72b 936 case 3:
bf49b057 937 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
938 ret = 1;
939 break;
6224f72b 940 }
14dd3ad8
GS
941 JMPENV_POP;
942 return ret;
943}
944
945#ifdef PERL_FLEXIBLE_EXCEPTIONS
946STATIC void *
947S_vparse_body(pTHX_ va_list args)
948{
949 char **env = va_arg(args, char**);
950 XSINIT_t xsinit = va_arg(args, XSINIT_t);
951
952 return parse_body(env, xsinit);
312caa8e 953}
14dd3ad8 954#endif
312caa8e
CS
955
956STATIC void *
14dd3ad8 957S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 958{
312caa8e
CS
959 int argc = PL_origargc;
960 char **argv = PL_origargv;
312caa8e
CS
961 char *scriptname = NULL;
962 int fdscript = -1;
963 VOL bool dosearch = FALSE;
964 char *validarg = "";
965 AV* comppadlist;
966 register SV *sv;
967 register char *s;
659ca9ea 968 char *popts, *cddir = Nullch;
312caa8e 969
3280af22 970 sv_setpvn(PL_linestr,"",0);
79cb57f6 971 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
972 SAVEFREESV(sv);
973 init_main_stash();
54310121 974
6224f72b
GS
975 for (argc--,argv++; argc > 0; argc--,argv++) {
976 if (argv[0][0] != '-' || !argv[0][1])
977 break;
978#ifdef DOSUID
979 if (*validarg)
980 validarg = " PHOOEY ";
981 else
982 validarg = argv[0];
13281fa4 983#endif
6224f72b
GS
984 s = argv[0]+1;
985 reswitch:
986 switch (*s) {
729a02f2
GS
987 case 'C':
988#ifdef WIN32
c0932edc 989 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
990 /* FALL THROUGH */
991#endif
1d5472a9
GS
992#ifndef PERL_STRICT_CR
993 case '\r':
994#endif
6224f72b
GS
995 case ' ':
996 case '0':
997 case 'F':
998 case 'a':
999 case 'c':
1000 case 'd':
1001 case 'D':
1002 case 'h':
1003 case 'i':
1004 case 'l':
1005 case 'M':
1006 case 'm':
1007 case 'n':
1008 case 'p':
1009 case 's':
1010 case 'u':
1011 case 'U':
1012 case 'v':
599cee73
PM
1013 case 'W':
1014 case 'X':
6224f72b 1015 case 'w':
155aba94 1016 if ((s = moreswitches(s)))
6224f72b
GS
1017 goto reswitch;
1018 break;
33b78306 1019
6224f72b 1020 case 'T':
3280af22 1021 PL_tainting = TRUE;
6224f72b
GS
1022 s++;
1023 goto reswitch;
f86702cc 1024
6224f72b 1025 case 'e':
bf4acbe4
GS
1026#ifdef MACOS_TRADITIONAL
1027 /* ignore -e for Dev:Pseudo argument */
1028 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1029 break;
bf4acbe4 1030#endif
3280af22 1031 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1032 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1033 if (!PL_e_script) {
79cb57f6 1034 PL_e_script = newSVpvn("",0);
0cb96387 1035 filter_add(read_e_script, NULL);
6224f72b
GS
1036 }
1037 if (*++s)
3280af22 1038 sv_catpv(PL_e_script, s);
6224f72b 1039 else if (argv[1]) {
3280af22 1040 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1041 argc--,argv++;
1042 }
1043 else
cea2e8a9 1044 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1045 sv_catpv(PL_e_script, "\n");
6224f72b 1046 break;
afe37c7d 1047
6224f72b
GS
1048 case 'I': /* -I handled both here and in moreswitches() */
1049 forbid_setid("-I");
1050 if (!*++s && (s=argv[1]) != Nullch) {
1051 argc--,argv++;
1052 }
6224f72b 1053 if (s && *s) {
0df16ed7
GS
1054 char *p;
1055 STRLEN len = strlen(s);
1056 p = savepvn(s, len);
9c8a64f0 1057 incpush(p, TRUE, TRUE);
0df16ed7
GS
1058 sv_catpvn(sv, "-I", 2);
1059 sv_catpvn(sv, p, len);
1060 sv_catpvn(sv, " ", 1);
6224f72b 1061 Safefree(p);
0df16ed7
GS
1062 }
1063 else
a67e862a 1064 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1065 break;
1066 case 'P':
1067 forbid_setid("-P");
3280af22 1068 PL_preprocess = TRUE;
6224f72b
GS
1069 s++;
1070 goto reswitch;
1071 case 'S':
1072 forbid_setid("-S");
1073 dosearch = TRUE;
1074 s++;
1075 goto reswitch;
1076 case 'V':
3280af22
NIS
1077 if (!PL_preambleav)
1078 PL_preambleav = newAV();
1079 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1080 if (*++s != ':') {
3280af22 1081 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1082#ifdef VMS
6b88bc9c 1083 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1084#else
3280af22 1085 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1086#endif
3280af22 1087 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1088# ifdef DEBUGGING
3280af22 1089 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1090# endif
6224f72b 1091# ifdef MULTIPLICITY
8f872242 1092 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1093# endif
b363f7ed
GS
1094# ifdef USE_THREADS
1095 sv_catpv(PL_Sv," USE_THREADS");
1096# endif
ac5e8965
JH
1097# ifdef USE_ITHREADS
1098 sv_catpv(PL_Sv," USE_ITHREADS");
1099# endif
10cc9d2a
JH
1100# ifdef USE_64_BIT_INT
1101 sv_catpv(PL_Sv," USE_64_BIT_INT");
1102# endif
1103# ifdef USE_64_BIT_ALL
1104 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1105# endif
1106# ifdef USE_LONG_DOUBLE
1107 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1108# endif
53430762
JH
1109# ifdef USE_LARGE_FILES
1110 sv_catpv(PL_Sv," USE_LARGE_FILES");
1111# endif
ac5e8965
JH
1112# ifdef USE_SOCKS
1113 sv_catpv(PL_Sv," USE_SOCKS");
1114# endif
b363f7ed
GS
1115# ifdef PERL_OBJECT
1116 sv_catpv(PL_Sv," PERL_OBJECT");
1117# endif
1118# ifdef PERL_IMPLICIT_CONTEXT
1119 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1120# endif
1121# ifdef PERL_IMPLICIT_SYS
1122 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1123# endif
3280af22 1124 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1125
6224f72b
GS
1126#if defined(LOCAL_PATCH_COUNT)
1127 if (LOCAL_PATCH_COUNT > 0) {
1128 int i;
3280af22 1129 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1130 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1131 if (PL_localpatches[i])
cea2e8a9 1132 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1133 }
1134 }
1135#endif
cea2e8a9 1136 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1137#ifdef __DATE__
1138# ifdef __TIME__
cea2e8a9 1139 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1140# else
cea2e8a9 1141 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1142# endif
1143#endif
3280af22 1144 sv_catpv(PL_Sv, "; \
6224f72b
GS
1145$\"=\"\\n \"; \
1146@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1147print \" \\%ENV:\\n @env\\n\" if @env; \
1148print \" \\@INC:\\n @INC\\n\";");
1149 }
1150 else {
3280af22
NIS
1151 PL_Sv = newSVpv("config_vars(qw(",0);
1152 sv_catpv(PL_Sv, ++s);
1153 sv_catpv(PL_Sv, "))");
6224f72b
GS
1154 s += strlen(s);
1155 }
3280af22 1156 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1157 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1158 goto reswitch;
1159 case 'x':
3280af22 1160 PL_doextract = TRUE;
6224f72b
GS
1161 s++;
1162 if (*s)
f4c556ac 1163 cddir = s;
6224f72b
GS
1164 break;
1165 case 0:
1166 break;
1167 case '-':
1168 if (!*++s || isSPACE(*s)) {
1169 argc--,argv++;
1170 goto switch_end;
1171 }
1172 /* catch use of gnu style long options */
1173 if (strEQ(s, "version")) {
1174 s = "v";
1175 goto reswitch;
1176 }
1177 if (strEQ(s, "help")) {
1178 s = "h";
1179 goto reswitch;
1180 }
1181 s--;
1182 /* FALL THROUGH */
1183 default:
cea2e8a9 1184 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1185 }
1186 }
6224f72b 1187 switch_end:
54310121 1188
f675dbe5
CB
1189 if (
1190#ifndef SECURE_INTERNAL_GETENV
1191 !PL_tainting &&
1192#endif
659ca9ea 1193 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1194 {
659ca9ea 1195 s = savepv(popts);
74288ac8
GS
1196 while (isSPACE(*s))
1197 s++;
1198 if (*s == '-' && *(s+1) == 'T')
1199 PL_tainting = TRUE;
1200 else {
1201 while (s && *s) {
4ea8f8fb 1202 char *d;
74288ac8
GS
1203 while (isSPACE(*s))
1204 s++;
1205 if (*s == '-') {
1206 s++;
1207 if (isSPACE(*s))
1208 continue;
1209 }
4ea8f8fb 1210 d = s;
74288ac8
GS
1211 if (!*s)
1212 break;
1213 if (!strchr("DIMUdmw", *s))
cea2e8a9 1214 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1215 while (++s && *s) {
1216 if (isSPACE(*s)) {
1217 *s++ = '\0';
1218 break;
1219 }
1220 }
1221 moreswitches(d);
6224f72b 1222 }
6224f72b
GS
1223 }
1224 }
a0d0e21e 1225
6224f72b
GS
1226 if (!scriptname)
1227 scriptname = argv[0];
3280af22 1228 if (PL_e_script) {
6224f72b
GS
1229 argc++,argv--;
1230 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1231 }
1232 else if (scriptname == Nullch) {
1233#ifdef MSDOS
1234 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1235 moreswitches("h");
1236#endif
1237 scriptname = "-";
1238 }
1239
1240 init_perllib();
1241
1242 open_script(scriptname,dosearch,sv,&fdscript);
1243
1244 validate_suid(validarg, scriptname,fdscript);
1245
64ca3a65 1246#ifndef PERL_MICRO
0b5b802d
GS
1247#if defined(SIGCHLD) || defined(SIGCLD)
1248 {
1249#ifndef SIGCHLD
1250# define SIGCHLD SIGCLD
1251#endif
1252 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1253 if (sigstate == SIG_IGN) {
1254 if (ckWARN(WARN_SIGNAL))
1255 Perl_warner(aTHX_ WARN_SIGNAL,
1256 "Can't ignore signal CHLD, forcing to default");
1257 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1258 }
1259 }
1260#endif
64ca3a65 1261#endif
0b5b802d 1262
bf4acbe4
GS
1263#ifdef MACOS_TRADITIONAL
1264 if (PL_doextract || gMacPerl_AlwaysExtract) {
1265#else
f4c556ac 1266 if (PL_doextract) {
bf4acbe4 1267#endif
6224f72b 1268 find_beginning();
f4c556ac
GS
1269 if (cddir && PerlDir_chdir(cddir) < 0)
1270 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1271
1272 }
6224f72b 1273
3280af22
NIS
1274 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1275 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1276 CvUNIQUE_on(PL_compcv);
1277
1278 PL_comppad = newAV();
1279 av_push(PL_comppad, Nullsv);
1280 PL_curpad = AvARRAY(PL_comppad);
1281 PL_comppad_name = newAV();
1282 PL_comppad_name_fill = 0;
1283 PL_min_intro_pending = 0;
1284 PL_padix = 0;
6224f72b 1285#ifdef USE_THREADS
79cb57f6 1286 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1287 PL_curpad[0] = (SV*)newAV();
1288 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1289 CvOWNER(PL_compcv) = 0;
1290 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1291 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1292#endif /* USE_THREADS */
1293
1294 comppadlist = newAV();
1295 AvREAL_off(comppadlist);
3280af22
NIS
1296 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1297 av_store(comppadlist, 1, (SV*)PL_comppad);
1298 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1299
0c4f7ff0 1300 boot_core_PerlIO();
6224f72b 1301 boot_core_UNIVERSAL();
9a34ef1d 1302#ifndef PERL_MICRO
09bef843 1303 boot_core_xsutils();
9a34ef1d 1304#endif
6224f72b
GS
1305
1306 if (xsinit)
0cb96387 1307 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1308#ifndef PERL_MICRO
ed79a026 1309#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1310 init_os_extras();
6224f72b 1311#endif
64ca3a65 1312#endif
6224f72b 1313
29209bc5 1314#ifdef USE_SOCKS
1b9c9cf5
DH
1315# ifdef HAS_SOCKS5_INIT
1316 socks5_init(argv[0]);
1317# else
29209bc5 1318 SOCKSinit(argv[0]);
1b9c9cf5 1319# endif
ac27b0f5 1320#endif
29209bc5 1321
6224f72b
GS
1322 init_predump_symbols();
1323 /* init_postdump_symbols not currently designed to be called */
1324 /* more than once (ENV isn't cleared first, for example) */
1325 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1326 if (!PL_do_undump)
6224f72b
GS
1327 init_postdump_symbols(argc,argv,env);
1328
1329 init_lexer();
1330
1331 /* now parse the script */
1332
1333 SETERRNO(0,SS$_NORMAL);
3280af22 1334 PL_error_count = 0;
bf4acbe4
GS
1335#ifdef MACOS_TRADITIONAL
1336 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1337 if (PL_minus_c)
1338 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1339 else {
1340 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1341 MacPerl_MPWFileName(PL_origfilename));
1342 }
1343 }
1344#else
3280af22
NIS
1345 if (yyparse() || PL_error_count) {
1346 if (PL_minus_c)
cea2e8a9 1347 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1348 else {
cea2e8a9 1349 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1350 PL_origfilename);
6224f72b
GS
1351 }
1352 }
bf4acbe4 1353#endif
57843af0 1354 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1355 PL_curstash = PL_defstash;
1356 PL_preprocess = FALSE;
1357 if (PL_e_script) {
1358 SvREFCNT_dec(PL_e_script);
1359 PL_e_script = Nullsv;
6224f72b
GS
1360 }
1361
1362 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1363 SvREFCNT_dec(PL_rs);
1364 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1365 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1366 if (PL_do_undump)
6224f72b
GS
1367 my_unexec();
1368
57843af0
GS
1369 if (isWARN_ONCE) {
1370 SAVECOPFILE(PL_curcop);
1371 SAVECOPLINE(PL_curcop);
3280af22 1372 gv_check(PL_defstash);
57843af0 1373 }
6224f72b
GS
1374
1375 LEAVE;
1376 FREETMPS;
1377
1378#ifdef MYMALLOC
1379 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1380 dump_mstats("after compilation:");
1381#endif
1382
1383 ENTER;
3280af22 1384 PL_restartop = 0;
312caa8e 1385 return NULL;
6224f72b
GS
1386}
1387
954c1994
GS
1388/*
1389=for apidoc perl_run
1390
1391Tells a Perl interpreter to run. See L<perlembed>.
1392
1393=cut
1394*/
1395
6224f72b 1396int
0cb96387 1397perl_run(pTHXx)
6224f72b 1398{
6224f72b 1399 I32 oldscope;
14dd3ad8 1400 int ret = 0;
db36c5a1 1401 dJMPENV;
cea2e8a9
GS
1402#ifdef USE_THREADS
1403 dTHX;
1404#endif
6224f72b 1405
3280af22 1406 oldscope = PL_scopestack_ix;
6224f72b 1407
14dd3ad8 1408#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1409 redo_body:
14dd3ad8
GS
1410 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1411#else
1412 JMPENV_PUSH(ret);
1413#endif
6224f72b
GS
1414 switch (ret) {
1415 case 1:
1416 cxstack_ix = -1; /* start context stack again */
312caa8e 1417 goto redo_body;
14dd3ad8
GS
1418 case 0: /* normal completion */
1419#ifndef PERL_FLEXIBLE_EXCEPTIONS
1420 redo_body:
1421 run_body(oldscope);
1422#endif
1423 /* FALL THROUGH */
1424 case 2: /* my_exit() */
3280af22 1425 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1426 LEAVE;
1427 FREETMPS;
3280af22 1428 PL_curstash = PL_defstash;
865be832 1429 if (PL_endav && !PL_minus_c)
3280af22 1430 call_list(oldscope, PL_endav);
6224f72b
GS
1431#ifdef MYMALLOC
1432 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1433 dump_mstats("after execution: ");
1434#endif
14dd3ad8
GS
1435 ret = STATUS_NATIVE_EXPORT;
1436 break;
6224f72b 1437 case 3:
312caa8e
CS
1438 if (PL_restartop) {
1439 POPSTACK_TO(PL_mainstack);
1440 goto redo_body;
6224f72b 1441 }
bf49b057 1442 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1443 FREETMPS;
14dd3ad8
GS
1444 ret = 1;
1445 break;
6224f72b
GS
1446 }
1447
14dd3ad8
GS
1448 JMPENV_POP;
1449 return ret;
312caa8e
CS
1450}
1451
14dd3ad8 1452#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1453STATIC void *
14dd3ad8 1454S_vrun_body(pTHX_ va_list args)
312caa8e 1455{
312caa8e
CS
1456 I32 oldscope = va_arg(args, I32);
1457
14dd3ad8
GS
1458 return run_body(oldscope);
1459}
1460#endif
1461
1462
1463STATIC void *
1464S_run_body(pTHX_ I32 oldscope)
1465{
6224f72b 1466 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1467 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1468
3280af22 1469 if (!PL_restartop) {
6224f72b
GS
1470 DEBUG_x(dump_all());
1471 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1472 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1473 PTR2UV(thr)));
6224f72b 1474
3280af22 1475 if (PL_minus_c) {
bf4acbe4
GS
1476#ifdef MACOS_TRADITIONAL
1477 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1478#else
bf49b057 1479 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1480#endif
6224f72b
GS
1481 my_exit(0);
1482 }
3280af22 1483 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1484 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1485 if (PL_initav)
1486 call_list(oldscope, PL_initav);
6224f72b
GS
1487 }
1488
1489 /* do it */
1490
3280af22 1491 if (PL_restartop) {
533c011a 1492 PL_op = PL_restartop;
3280af22 1493 PL_restartop = 0;
cea2e8a9 1494 CALLRUNOPS(aTHX);
6224f72b 1495 }
3280af22
NIS
1496 else if (PL_main_start) {
1497 CvDEPTH(PL_main_cv) = 1;
533c011a 1498 PL_op = PL_main_start;
cea2e8a9 1499 CALLRUNOPS(aTHX);
6224f72b
GS
1500 }
1501
f6b3007c
JH
1502 my_exit(0);
1503 /* NOTREACHED */
312caa8e 1504 return NULL;
6224f72b
GS
1505}
1506
954c1994
GS
1507/*
1508=for apidoc p||get_sv
1509
1510Returns the SV of the specified Perl scalar. If C<create> is set and the
1511Perl variable does not exist then it will be created. If C<create> is not
1512set and the variable does not exist then NULL is returned.
1513
1514=cut
1515*/
1516
6224f72b 1517SV*
864dbfa3 1518Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1519{
1520 GV *gv;
1521#ifdef USE_THREADS
1522 if (name[1] == '\0' && !isALPHA(name[0])) {
1523 PADOFFSET tmp = find_threadsv(name);
411caa50 1524 if (tmp != NOT_IN_PAD)
6224f72b 1525 return THREADSV(tmp);
6224f72b
GS
1526 }
1527#endif /* USE_THREADS */
1528 gv = gv_fetchpv(name, create, SVt_PV);
1529 if (gv)
1530 return GvSV(gv);
1531 return Nullsv;
1532}
1533
954c1994
GS
1534/*
1535=for apidoc p||get_av
1536
1537Returns the AV of the specified Perl array. If C<create> is set and the
1538Perl variable does not exist then it will be created. If C<create> is not
1539set and the variable does not exist then NULL is returned.
1540
1541=cut
1542*/
1543
6224f72b 1544AV*
864dbfa3 1545Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1546{
1547 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1548 if (create)
1549 return GvAVn(gv);
1550 if (gv)
1551 return GvAV(gv);
1552 return Nullav;
1553}
1554
954c1994
GS
1555/*
1556=for apidoc p||get_hv
1557
1558Returns the HV of the specified Perl hash. If C<create> is set and the
1559Perl variable does not exist then it will be created. If C<create> is not
1560set and the variable does not exist then NULL is returned.
1561
1562=cut
1563*/
1564
6224f72b 1565HV*
864dbfa3 1566Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1567{
a0d0e21e
LW
1568 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1569 if (create)
1570 return GvHVn(gv);
1571 if (gv)
1572 return GvHV(gv);
1573 return Nullhv;
1574}
1575
954c1994
GS
1576/*
1577=for apidoc p||get_cv
1578
1579Returns the CV of the specified Perl subroutine. If C<create> is set and
1580the Perl subroutine does not exist then it will be declared (which has the
1581same effect as saying C<sub name;>). If C<create> is not set and the
1582subroutine does not exist then NULL is returned.
1583
1584=cut
1585*/
1586
a0d0e21e 1587CV*
864dbfa3 1588Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1589{
1590 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1591 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1592 /* XXX this is probably not what they think they're getting.
1593 * It has the same effect as "sub name;", i.e. just a forward
1594 * declaration! */
8ebc5c01 1595 if (create && !GvCVu(gv))
774d564b 1596 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1597 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1598 Nullop,
a0d0e21e
LW
1599 Nullop);
1600 if (gv)
8ebc5c01 1601 return GvCVu(gv);
a0d0e21e
LW
1602 return Nullcv;
1603}
1604
79072805
LW
1605/* Be sure to refetch the stack pointer after calling these routines. */
1606
954c1994
GS
1607/*
1608=for apidoc p||call_argv
1609
1610Performs a callback to the specified Perl sub. See L<perlcall>.
1611
1612=cut
1613*/
1614
a0d0e21e 1615I32
864dbfa3 1616Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1617
8ac85365
NIS
1618 /* See G_* flags in cop.h */
1619 /* null terminated arg list */
8990e307 1620{
a0d0e21e 1621 dSP;
8990e307 1622
924508f0 1623 PUSHMARK(SP);
a0d0e21e 1624 if (argv) {
8990e307 1625 while (*argv) {
a0d0e21e 1626 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1627 argv++;
1628 }
a0d0e21e 1629 PUTBACK;
8990e307 1630 }
864dbfa3 1631 return call_pv(sub_name, flags);
8990e307
LW
1632}
1633
954c1994
GS
1634/*
1635=for apidoc p||call_pv
1636
1637Performs a callback to the specified Perl sub. See L<perlcall>.
1638
1639=cut
1640*/
1641
a0d0e21e 1642I32
864dbfa3 1643Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1644 /* name of the subroutine */
1645 /* See G_* flags in cop.h */
a0d0e21e 1646{
864dbfa3 1647 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1648}
1649
954c1994
GS
1650/*
1651=for apidoc p||call_method
1652
1653Performs a callback to the specified Perl method. The blessed object must
1654be on the stack. See L<perlcall>.
1655
1656=cut
1657*/
1658
a0d0e21e 1659I32
864dbfa3 1660Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1661 /* name of the subroutine */
1662 /* See G_* flags in cop.h */
a0d0e21e 1663{
968b3946 1664 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1665}
1666
1667/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1668/*
1669=for apidoc p||call_sv
1670
1671Performs a callback to the Perl sub whose name is in the SV. See
1672L<perlcall>.
1673
1674=cut
1675*/
1676
a0d0e21e 1677I32
864dbfa3 1678Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1679 /* See G_* flags in cop.h */
a0d0e21e 1680{
924508f0 1681 dSP;
a0d0e21e 1682 LOGOP myop; /* fake syntax tree node */
968b3946 1683 UNOP method_op;
aa689395 1684 I32 oldmark;
13689cfe 1685 volatile I32 retval = 0;
a0d0e21e 1686 I32 oldscope;
54310121 1687 bool oldcatch = CATCH_GET;
6224f72b 1688 int ret;
533c011a 1689 OP* oldop = PL_op;
db36c5a1 1690 dJMPENV;
1e422769 1691
a0d0e21e
LW
1692 if (flags & G_DISCARD) {
1693 ENTER;
1694 SAVETMPS;
1695 }
1696
aa689395 1697 Zero(&myop, 1, LOGOP);
54310121 1698 myop.op_next = Nullop;
f51d4af5 1699 if (!(flags & G_NOARGS))
aa689395 1700 myop.op_flags |= OPf_STACKED;
54310121
PP
1701 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1702 (flags & G_ARRAY) ? OPf_WANT_LIST :
1703 OPf_WANT_SCALAR);
462e5cf6 1704 SAVEOP();
533c011a 1705 PL_op = (OP*)&myop;
aa689395 1706
3280af22
NIS
1707 EXTEND(PL_stack_sp, 1);
1708 *++PL_stack_sp = sv;
aa689395 1709 oldmark = TOPMARK;
3280af22 1710 oldscope = PL_scopestack_ix;
a0d0e21e 1711
3280af22 1712 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1713 /* Handle first BEGIN of -d. */
3280af22 1714 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1715 /* Try harder, since this may have been a sighandler, thus
1716 * curstash may be meaningless. */
3280af22 1717 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1718 && !(flags & G_NODEBUG))
533c011a 1719 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1720
968b3946
GS
1721 if (flags & G_METHOD) {
1722 Zero(&method_op, 1, UNOP);
1723 method_op.op_next = PL_op;
1724 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1725 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1726 PL_op = (OP*)&method_op;
968b3946
GS
1727 }
1728
312caa8e 1729 if (!(flags & G_EVAL)) {
0cdb2077 1730 CATCH_SET(TRUE);
14dd3ad8 1731 call_body((OP*)&myop, FALSE);
312caa8e 1732 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1733 CATCH_SET(oldcatch);
312caa8e
CS
1734 }
1735 else {
d78bda3d 1736 myop.op_other = (OP*)&myop;
3280af22 1737 PL_markstack_ptr--;
4633a7c4
LW
1738 /* we're trying to emulate pp_entertry() here */
1739 {
c09156bb 1740 register PERL_CONTEXT *cx;
54310121 1741 I32 gimme = GIMME_V;
ac27b0f5 1742
4633a7c4
LW
1743 ENTER;
1744 SAVETMPS;
ac27b0f5 1745
968b3946 1746 push_return(Nullop);
1d76a5c3 1747 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1748 PUSHEVAL(cx, 0, 0);
533c011a 1749 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1750
faef0170 1751 PL_in_eval = EVAL_INEVAL;
4633a7c4 1752 if (flags & G_KEEPERR)
faef0170 1753 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1754 else
38a03e6e 1755 sv_setpv(ERRSV,"");
4633a7c4 1756 }
3280af22 1757 PL_markstack_ptr++;
a0d0e21e 1758
14dd3ad8
GS
1759#ifdef PERL_FLEXIBLE_EXCEPTIONS
1760 redo_body:
1761 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1762 (OP*)&myop, FALSE);
14dd3ad8
GS
1763#else
1764 JMPENV_PUSH(ret);
1765#endif
6224f72b
GS
1766 switch (ret) {
1767 case 0:
14dd3ad8
GS
1768#ifndef PERL_FLEXIBLE_EXCEPTIONS
1769 redo_body:
1770 call_body((OP*)&myop, FALSE);
1771#endif
312caa8e
CS
1772 retval = PL_stack_sp - (PL_stack_base + oldmark);
1773 if (!(flags & G_KEEPERR))
1774 sv_setpv(ERRSV,"");
a0d0e21e 1775 break;
6224f72b 1776 case 1:
f86702cc 1777 STATUS_ALL_FAILURE;
a0d0e21e 1778 /* FALL THROUGH */
6224f72b 1779 case 2:
a0d0e21e 1780 /* my_exit() was called */
3280af22 1781 PL_curstash = PL_defstash;
a0d0e21e 1782 FREETMPS;
14dd3ad8 1783 JMPENV_POP;
cc3604b1 1784 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1785 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1786 my_exit_jump();
a0d0e21e 1787 /* NOTREACHED */
6224f72b 1788 case 3:
3280af22 1789 if (PL_restartop) {
533c011a 1790 PL_op = PL_restartop;
3280af22 1791 PL_restartop = 0;
312caa8e 1792 goto redo_body;
a0d0e21e 1793 }
3280af22 1794 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1795 if (flags & G_ARRAY)
1796 retval = 0;
1797 else {
1798 retval = 1;
3280af22 1799 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1800 }
312caa8e 1801 break;
a0d0e21e 1802 }
a0d0e21e 1803
3280af22 1804 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1805 SV **newsp;
1806 PMOP *newpm;
1807 I32 gimme;
c09156bb 1808 register PERL_CONTEXT *cx;
a0a2876f
LW
1809 I32 optype;
1810
1811 POPBLOCK(cx,newpm);
1812 POPEVAL(cx);
1813 pop_return();
3280af22 1814 PL_curpm = newpm;
a0a2876f 1815 LEAVE;
a0d0e21e 1816 }
14dd3ad8 1817 JMPENV_POP;
a0d0e21e 1818 }
1e422769 1819
a0d0e21e 1820 if (flags & G_DISCARD) {
3280af22 1821 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1822 retval = 0;
1823 FREETMPS;
1824 LEAVE;
1825 }
533c011a 1826 PL_op = oldop;
a0d0e21e
LW
1827 return retval;
1828}
1829
14dd3ad8 1830#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1831STATIC void *
14dd3ad8 1832S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1833{
1834 OP *myop = va_arg(args, OP*);
1835 int is_eval = va_arg(args, int);
1836
14dd3ad8 1837 call_body(myop, is_eval);
312caa8e
CS
1838 return NULL;
1839}
14dd3ad8 1840#endif
312caa8e
CS
1841
1842STATIC void
14dd3ad8 1843S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1844{
312caa8e
CS
1845 if (PL_op == myop) {
1846 if (is_eval)
f807eda9 1847 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1848 else
f807eda9 1849 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1850 }
1851 if (PL_op)
cea2e8a9 1852 CALLRUNOPS(aTHX);
312caa8e
CS
1853}
1854
6e72f9df 1855/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1856
954c1994
GS
1857/*
1858=for apidoc p||eval_sv
1859
1860Tells Perl to C<eval> the string in the SV.
1861
1862=cut
1863*/
1864
a0d0e21e 1865I32
864dbfa3 1866Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1867
8ac85365 1868 /* See G_* flags in cop.h */
a0d0e21e 1869{
924508f0 1870 dSP;
a0d0e21e 1871 UNOP myop; /* fake syntax tree node */
8fa7f367 1872 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1873 volatile I32 retval = 0;
4633a7c4 1874 I32 oldscope;
6224f72b 1875 int ret;
533c011a 1876 OP* oldop = PL_op;
db36c5a1 1877 dJMPENV;
84902520 1878
4633a7c4
LW
1879 if (flags & G_DISCARD) {
1880 ENTER;
1881 SAVETMPS;
1882 }
1883
462e5cf6 1884 SAVEOP();
533c011a
NIS
1885 PL_op = (OP*)&myop;
1886 Zero(PL_op, 1, UNOP);
3280af22
NIS
1887 EXTEND(PL_stack_sp, 1);
1888 *++PL_stack_sp = sv;
1889 oldscope = PL_scopestack_ix;
79072805 1890
4633a7c4
LW
1891 if (!(flags & G_NOARGS))
1892 myop.op_flags = OPf_STACKED;
79072805 1893 myop.op_next = Nullop;
6e72f9df 1894 myop.op_type = OP_ENTEREVAL;
54310121
PP
1895 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1896 (flags & G_ARRAY) ? OPf_WANT_LIST :
1897 OPf_WANT_SCALAR);
6e72f9df
PP
1898 if (flags & G_KEEPERR)
1899 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1900
14dd3ad8 1901#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1902 redo_body:
14dd3ad8 1903 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1904 (OP*)&myop, TRUE);
14dd3ad8
GS
1905#else
1906 JMPENV_PUSH(ret);
1907#endif
6224f72b
GS
1908 switch (ret) {
1909 case 0:
14dd3ad8
GS
1910#ifndef PERL_FLEXIBLE_EXCEPTIONS
1911 redo_body:
1912 call_body((OP*)&myop,TRUE);
1913#endif
312caa8e
CS
1914 retval = PL_stack_sp - (PL_stack_base + oldmark);
1915 if (!(flags & G_KEEPERR))
1916 sv_setpv(ERRSV,"");
4633a7c4 1917 break;
6224f72b 1918 case 1:
f86702cc 1919 STATUS_ALL_FAILURE;
4633a7c4 1920 /* FALL THROUGH */
6224f72b 1921 case 2:
4633a7c4 1922 /* my_exit() was called */
3280af22 1923 PL_curstash = PL_defstash;
4633a7c4 1924 FREETMPS;
14dd3ad8 1925 JMPENV_POP;
cc3604b1 1926 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1927 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1928 my_exit_jump();
4633a7c4 1929 /* NOTREACHED */
6224f72b 1930 case 3:
3280af22 1931 if (PL_restartop) {
533c011a 1932 PL_op = PL_restartop;
3280af22 1933 PL_restartop = 0;
312caa8e 1934 goto redo_body;
4633a7c4 1935 }
3280af22 1936 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1937 if (flags & G_ARRAY)
1938 retval = 0;
1939 else {
1940 retval = 1;
3280af22 1941 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1942 }
312caa8e 1943 break;
4633a7c4
LW
1944 }
1945
14dd3ad8 1946 JMPENV_POP;
4633a7c4 1947 if (flags & G_DISCARD) {
3280af22 1948 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1949 retval = 0;
1950 FREETMPS;
1951 LEAVE;
1952 }
533c011a 1953 PL_op = oldop;
4633a7c4
LW
1954 return retval;
1955}
1956
954c1994
GS
1957/*
1958=for apidoc p||eval_pv
1959
1960Tells Perl to C<eval> the given string and return an SV* result.
1961
1962=cut
1963*/
1964
137443ea 1965SV*
864dbfa3 1966Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
1967{
1968 dSP;
1969 SV* sv = newSVpv(p, 0);
1970
864dbfa3 1971 eval_sv(sv, G_SCALAR);
137443ea
PP
1972 SvREFCNT_dec(sv);
1973
1974 SPAGAIN;
1975 sv = POPs;
1976 PUTBACK;
1977
2d8e6c8d
GS
1978 if (croak_on_error && SvTRUE(ERRSV)) {
1979 STRLEN n_a;
cea2e8a9 1980 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1981 }
137443ea
PP
1982
1983 return sv;
1984}
1985
4633a7c4
LW
1986/* Require a module. */
1987
954c1994
GS
1988/*
1989=for apidoc p||require_pv
1990
7d3fb230
BS
1991Tells Perl to C<require> the file named by the string argument. It is
1992analogous to the Perl code C<eval "require '$file'">. It's even
1993implemented that way; consider using Perl_load_module instead.
954c1994 1994
7d3fb230 1995=cut */
954c1994 1996
4633a7c4 1997void
864dbfa3 1998Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1999{
d3acc0f7
JP
2000 SV* sv;
2001 dSP;
e788e7d3 2002 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2003 PUTBACK;
2004 sv = sv_newmortal();
4633a7c4
LW
2005 sv_setpv(sv, "require '");
2006 sv_catpv(sv, pv);
2007 sv_catpv(sv, "'");
864dbfa3 2008 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2009 SPAGAIN;
2010 POPSTACK;
79072805
LW
2011}
2012
79072805 2013void
864dbfa3 2014Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2015{
2016 register GV *gv;
2017
155aba94 2018 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2019 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2020}
2021
76e3520e 2022STATIC void
cea2e8a9 2023S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2024{
ab821d7f
PP
2025 /* This message really ought to be max 23 lines.
2026 * Removed -h because the user already knows that opton. Others? */
fb73857a 2027
76e3520e 2028 static char *usage_msg[] = {
fb73857a
PP
2029"-0[octal] specify record separator (\\0, if no argument)",
2030"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2031"-C enable native wide character system interfaces",
1950ee41 2032"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2033"-d[:debugger] run program under debugger",
2034"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2035"-e 'command' one line of program (several -e's allowed, omit programfile)",
2036"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2037"-i[extension] edit <> files in place (makes backup if extension supplied)",
2038"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2039"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2040"-[mM][-]module execute `use/no module...' before executing program",
2041"-n assume 'while (<>) { ... }' loop around program",
2042"-p assume loop like -n but print line also, like sed",
2043"-P run program through C preprocessor before compilation",
2044"-s enable rudimentary parsing for switches after programfile",
2045"-S look for programfile using PATH environment variable",
2046"-T enable tainting checks",
2047"-u dump core after parsing program",
fb73857a 2048"-U allow unsafe operations",
aac3bd0d
GS
2049"-v print version, subversion (includes VERY IMPORTANT perl info)",
2050"-V[:variable] print configuration summary (or a single Config.pm variable)",
2051"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2052"-W enable all warnings",
2053"-X disable all warnings",
fb73857a
PP
2054"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2055"\n",
2056NULL
2057};
76e3520e 2058 char **p = usage_msg;
fb73857a 2059
b0e47665
GS
2060 PerlIO_printf(PerlIO_stdout(),
2061 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2062 name);
fb73857a 2063 while (*p)
b0e47665 2064 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2065}
2066
79072805
LW
2067/* This routine handles any switches that can be given during run */
2068
2069char *
864dbfa3 2070Perl_moreswitches(pTHX_ char *s)
79072805 2071{
ba210ebe 2072 STRLEN numlen;
c07a80fd 2073 U32 rschar;
79072805
LW
2074
2075 switch (*s) {
2076 case '0':
a863c7d1 2077 {
b21ed0a9 2078 numlen = 0; /* disallow underscores */
dff6d3cd 2079 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2080 SvREFCNT_dec(PL_nrs);
c07a80fd 2081 if (rschar & ~((U8)~0))
3280af22 2082 PL_nrs = &PL_sv_undef;
c07a80fd 2083 else if (!rschar && numlen >= 2)
79cb57f6 2084 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2085 else {
2086 char ch = rschar;
79cb57f6 2087 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2088 }
2089 return s + numlen;
a863c7d1 2090 }
46487f74
GS
2091 case 'C':
2092 PL_widesyscalls = TRUE;
2093 s++;
2094 return s;
2304df62 2095 case 'F':
3280af22
NIS
2096 PL_minus_F = TRUE;
2097 PL_splitstr = savepv(s + 1);
2304df62
AD
2098 s += strlen(s);
2099 return s;
79072805 2100 case 'a':
3280af22 2101 PL_minus_a = TRUE;
79072805
LW
2102 s++;
2103 return s;
2104 case 'c':
3280af22 2105 PL_minus_c = TRUE;
79072805
LW
2106 s++;
2107 return s;
2108 case 'd':
bbce6d69 2109 forbid_setid("-d");
4633a7c4 2110 s++;
70c94a19
RR
2111 /* The following permits -d:Mod to accepts arguments following an =
2112 in the fashion that -MSome::Mod does. */
2113 if (*s == ':' || *s == '=') {
2114 char *start;
2115 SV *sv;
2116 sv = newSVpv("use Devel::", 0);
2117 start = ++s;
2118 /* We now allow -d:Module=Foo,Bar */
2119 while(isALNUM(*s) || *s==':') ++s;
2120 if (*s != '=')
2121 sv_catpv(sv, start);
2122 else {
2123 sv_catpvn(sv, start, s-start);
2124 sv_catpv(sv, " split(/,/,q{");
2125 sv_catpv(sv, ++s);
2126 sv_catpv(sv, "})");
2127 }
4633a7c4 2128 s += strlen(s);
70c94a19 2129 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2130 }
ed094faf 2131 if (!PL_perldb) {
3280af22 2132 PL_perldb = PERLDB_ALL;
a0d0e21e 2133 init_debugger();
ed094faf 2134 }
79072805
LW
2135 return s;
2136 case 'D':
0453d815 2137 {
79072805 2138#ifdef DEBUGGING
bbce6d69 2139 forbid_setid("-D");
79072805 2140 if (isALPHA(s[1])) {
04932ac8
DM
2141 /* if adding extra options, remember to update DEBUG_MASK */
2142 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2143 char *d;
2144
93a17b20 2145 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2146 PL_debug |= 1 << (d - debopts);
79072805
LW
2147 }
2148 else {
3280af22 2149 PL_debug = atoi(s+1);
79072805
LW
2150 for (s++; isDIGIT(*s); s++) ;
2151 }
aea4f609 2152 PL_debug |= DEBUG_TOP_FLAG;
79072805 2153#else
0453d815
PM
2154 if (ckWARN_d(WARN_DEBUGGING))
2155 Perl_warner(aTHX_ WARN_DEBUGGING,
2156 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2157 for (s++; isALNUM(*s); s++) ;
79072805
LW
2158#endif
2159 /*SUPPRESS 530*/
2160 return s;
0453d815 2161 }
4633a7c4 2162 case 'h':
ac27b0f5 2163 usage(PL_origargv[0]);
6ad3d225 2164 PerlProc_exit(0);
79072805 2165 case 'i':
3280af22
NIS
2166 if (PL_inplace)
2167 Safefree(PL_inplace);
2168 PL_inplace = savepv(s+1);
79072805 2169 /*SUPPRESS 530*/
3280af22 2170 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2171 if (*s) {
fb73857a 2172 *s++ = '\0';
7b8d334a
GS
2173 if (*s == '-') /* Additional switches on #! line. */
2174 s++;
2175 }
fb73857a
PP
2176 return s;
2177 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2178 forbid_setid("-I");
fb73857a
PP
2179 ++s;
2180 while (*s && isSPACE(*s))
2181 ++s;
2182 if (*s) {
774d564b 2183 char *e, *p;
0df16ed7
GS
2184 p = s;
2185 /* ignore trailing spaces (possibly followed by other switches) */
2186 do {
2187 for (e = p; *e && !isSPACE(*e); e++) ;
2188 p = e;
2189 while (isSPACE(*p))
2190 p++;
2191 } while (*p && *p != '-');
2192 e = savepvn(s, e-s);
9c8a64f0 2193 incpush(e, TRUE, TRUE);
0df16ed7
GS
2194 Safefree(e);
2195 s = p;
2196 if (*s == '-')
2197 s++;
79072805
LW
2198 }
2199 else
a67e862a 2200 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2201 return s;
79072805 2202 case 'l':
3280af22 2203 PL_minus_l = TRUE;
79072805 2204 s++;
7889fe52
NIS
2205 if (PL_ors_sv) {
2206 SvREFCNT_dec(PL_ors_sv);
2207 PL_ors_sv = Nullsv;
2208 }
79072805 2209 if (isDIGIT(*s)) {
7889fe52 2210 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2211 numlen = 0; /* disallow underscores */
7889fe52 2212 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2213 s += numlen;
2214 }
2215 else {
3280af22 2216 if (RsPARA(PL_nrs)) {
7889fe52
NIS
2217 PL_ors_sv = newSVpvn("\n\n",2);
2218 }
2219 else {
2220 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2221 }
79072805
LW
2222 }
2223 return s;
1a30305b 2224 case 'M':
bbce6d69 2225 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2226 /* FALL THROUGH */
2227 case 'm':
bbce6d69 2228 forbid_setid("-m"); /* XXX ? */
1a30305b 2229 if (*++s) {
a5f75d66 2230 char *start;
11343788 2231 SV *sv;
a5f75d66
AD
2232 char *use = "use ";
2233 /* -M-foo == 'no foo' */
2234 if (*s == '-') { use = "no "; ++s; }
11343788 2235 sv = newSVpv(use,0);
a5f75d66 2236 start = s;
1a30305b 2237 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2238 while(isALNUM(*s) || *s==':') ++s;
2239 if (*s != '=') {
11343788 2240 sv_catpv(sv, start);
c07a80fd
PP
2241 if (*(start-1) == 'm') {
2242 if (*s != '\0')
cea2e8a9 2243 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2244 sv_catpv( sv, " ()");
c07a80fd
PP
2245 }
2246 } else {
6df41af2 2247 if (s == start)
be98fb35
GS
2248 Perl_croak(aTHX_ "Module name required with -%c option",
2249 s[-1]);
11343788
MB
2250 sv_catpvn(sv, start, s-start);
2251 sv_catpv(sv, " split(/,/,q{");
2252 sv_catpv(sv, ++s);
2253 sv_catpv(sv, "})");
c07a80fd 2254 }
1a30305b 2255 s += strlen(s);
5c831c24 2256 if (!PL_preambleav)
3280af22
NIS
2257 PL_preambleav = newAV();
2258 av_push(PL_preambleav, sv);
1a30305b
PP
2259 }
2260 else
cea2e8a9 2261 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2262 return s;
79072805 2263 case 'n':
3280af22 2264 PL_minus_n = TRUE;
79072805
LW
2265 s++;
2266 return s;
2267 case 'p':
3280af22 2268 PL_minus_p = TRUE;
79072805
LW
2269 s++;
2270 return s;
2271 case 's':
bbce6d69 2272 forbid_setid("-s");
3280af22 2273 PL_doswitches = TRUE;
79072805
LW
2274 s++;
2275 return s;
463ee0b2 2276 case 'T':
3280af22 2277 if (!PL_tainting)
cea2e8a9 2278 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2279 s++;
2280 return s;
79072805 2281 case 'u':
bf4acbe4
GS
2282#ifdef MACOS_TRADITIONAL
2283 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2284#endif
3280af22 2285 PL_do_undump = TRUE;
79072805
LW
2286 s++;
2287 return s;
2288 case 'U':
3280af22 2289 PL_unsafe = TRUE;
79072805
LW
2290 s++;
2291 return s;
2292 case 'v':
8e9464f1 2293#if !defined(DGUX)
b0e47665 2294 PerlIO_printf(PerlIO_stdout(),
d2560b70 2295 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2296 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2297#else /* DGUX */
2298/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2299 PerlIO_printf(PerlIO_stdout(),
2300 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2301 PerlIO_printf(PerlIO_stdout(),
2302 Perl_form(aTHX_ " built under %s at %s %s\n",
2303 OSNAME, __DATE__, __TIME__));
2304 PerlIO_printf(PerlIO_stdout(),
2305 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2306 OSVERS));
8e9464f1
JH
2307#endif /* !DGUX */
2308
fb73857a
PP
2309#if defined(LOCAL_PATCH_COUNT)
2310 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2311 PerlIO_printf(PerlIO_stdout(),
2312 "\n(with %d registered patch%s, "
2313 "see perl -V for more detail)",
2314 (int)LOCAL_PATCH_COUNT,
2315 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2316#endif
1a30305b 2317
b0e47665 2318 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2319 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2320#ifdef MACOS_TRADITIONAL
2321 PerlIO_printf(PerlIO_stdout(),
084592ab 2322 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2323#endif
79072805 2324#ifdef MSDOS
b0e47665
GS
2325 PerlIO_printf(PerlIO_stdout(),
2326 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2327#endif
2328#ifdef DJGPP
b0e47665
GS
2329 PerlIO_printf(PerlIO_stdout(),
2330 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2331 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2332#endif
79072805 2333#ifdef OS2
b0e47665
GS
2334 PerlIO_printf(PerlIO_stdout(),
2335 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2336 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2337#endif
79072805 2338#ifdef atarist
b0e47665
GS
2339 PerlIO_printf(PerlIO_stdout(),
2340 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2341#endif
a3f9223b 2342#ifdef __BEOS__
b0e47665
GS
2343 PerlIO_printf(PerlIO_stdout(),
2344 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2345#endif
1d84e8df 2346#ifdef MPE
b0e47665
GS
2347 PerlIO_printf(PerlIO_stdout(),
2348 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2349#endif
9d116dd7 2350#ifdef OEMVS
b0e47665
GS
2351 PerlIO_printf(PerlIO_stdout(),
2352 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2353#endif
495c5fdc 2354#ifdef __VOS__
b0e47665
GS
2355 PerlIO_printf(PerlIO_stdout(),
2356 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2357#endif
092bebab 2358#ifdef __OPEN_VM
b0e47665
GS
2359 PerlIO_printf(PerlIO_stdout(),
2360 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2361#endif
a1a0e61e 2362#ifdef POSIX_BC
b0e47665
GS
2363 PerlIO_printf(PerlIO_stdout(),
2364 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2365#endif
61ae2fbf 2366#ifdef __MINT__
b0e47665
GS
2367 PerlIO_printf(PerlIO_stdout(),
2368 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2369#endif
f83d2536 2370#ifdef EPOC
b0e47665
GS
2371 PerlIO_printf(PerlIO_stdout(),
2372 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2373#endif
baed7233
DL
2374#ifdef BINARY_BUILD_NOTICE
2375 BINARY_BUILD_NOTICE;
2376#endif
b0e47665
GS
2377 PerlIO_printf(PerlIO_stdout(),
2378 "\n\
79072805 2379Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2380GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2381Complete documentation for Perl, including FAQ lists, should be found on\n\
2382this system using `man perl' or `perldoc perl'. If you have access to the\n\
2383Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2384 PerlProc_exit(0);
79072805 2385 case 'w':
599cee73 2386 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2387 PL_dowarn |= G_WARN_ON;
599cee73
PM
2388 s++;
2389 return s;
2390 case 'W':
ac27b0f5 2391 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2392 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2393 s++;
2394 return s;
2395 case 'X':
ac27b0f5 2396 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2397 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2398 s++;
2399 return s;
a0d0e21e 2400 case '*':
79072805
LW
2401 case ' ':
2402 if (s[1] == '-') /* Additional switches on #! line. */
2403 return s+2;
2404 break;
a0d0e21e 2405 case '-':
79072805 2406 case 0:
51882d45 2407#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2408 case '\r':
2409#endif
79072805
LW
2410 case '\n':
2411 case '\t':
2412 break;
aa689395
PP
2413#ifdef ALTERNATE_SHEBANG
2414 case 'S': /* OS/2 needs -S on "extproc" line. */
2415 break;
2416#endif
a0d0e21e 2417 case 'P':
3280af22 2418 if (PL_preprocess)
a0d0e21e
LW
2419 return s+1;
2420 /* FALL THROUGH */
79072805 2421 default:
cea2e8a9 2422 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2423 }
2424 return Nullch;
2425}
2426
2427/* compliments of Tom Christiansen */
2428
2429/* unexec() can be found in the Gnu emacs distribution */
ee580363 2430/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2431
2432void
864dbfa3 2433Perl_my_unexec(pTHX)
79072805
LW
2434{
2435#ifdef UNEXEC
46fc3d4c
PP
2436 SV* prog;
2437 SV* file;
ee580363 2438 int status = 1;
79072805
LW
2439 extern int etext;
2440
ee580363 2441 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2442 sv_catpv(prog, "/perl");
6b88bc9c 2443 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2444 sv_catpv(file, ".perldump");
79072805 2445
ee580363
GS
2446 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2447 /* unexec prints msg to stderr in case of failure */
6ad3d225 2448 PerlProc_exit(status);
79072805 2449#else
a5f75d66
AD
2450# ifdef VMS
2451# include <lib$routines.h>
2452 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2453# else
79072805 2454 ABORT(); /* for use with undump */
aa689395 2455# endif
a5f75d66 2456#endif
79072805
LW
2457}
2458
cb68f92d
GS
2459/* initialize curinterp */
2460STATIC void
cea2e8a9 2461S_init_interp(pTHX)
cb68f92d
GS
2462{
2463
066ef5b5 2464#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2465#define I_REINIT \
6b88bc9c
GS
2466 STMT_START { \
2467 PL_chopset = " \n-"; \
2468 PL_copline = NOLINE; \
2469 PL_curcop = &PL_compiling;\
2470 PL_curcopdb = NULL; \
2471 PL_dbargs = 0; \
3967c732 2472 PL_dumpindent = 4; \
6b88bc9c
GS
2473 PL_laststatval = -1; \
2474 PL_laststype = OP_STAT; \
2475 PL_maxscream = -1; \
2476 PL_maxsysfd = MAXSYSFD; \
2477 PL_statname = Nullsv; \
2478 PL_tmps_floor = -1; \
2479 PL_tmps_ix = -1; \
2480 PL_op_mask = NULL; \
6b88bc9c
GS
2481 PL_laststatval = -1; \
2482 PL_laststype = OP_STAT; \
2483 PL_mess_sv = Nullsv; \
2484 PL_splitstr = " "; \
2485 PL_generation = 100; \
2486 PL_exitlist = NULL; \
2487 PL_exitlistlen = 0; \
2488 PL_regindent = 0; \
2489 PL_in_clean_objs = FALSE; \
2490 PL_in_clean_all = FALSE; \
2491 PL_profiledata = NULL; \
2492 PL_rsfp = Nullfp; \
2493 PL_rsfp_filters = Nullav; \
24d3c518 2494 PL_dirty = FALSE; \
cb68f92d 2495 } STMT_END
9666903d 2496 I_REINIT;
066ef5b5
GS
2497#else
2498# ifdef MULTIPLICITY
2499# define PERLVAR(var,type)
51371543 2500# define PERLVARA(var,n,type)
cea2e8a9 2501# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2502# if defined(USE_THREADS)
2503# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2504# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2505# else /* !USE_THREADS */
2506# define PERLVARI(var,type,init) aTHX->var = init;
2507# define PERLVARIC(var,type,init) aTHX->var = init;
2508# endif /* USE_THREADS */
cea2e8a9 2509# else
c5be433b
GS
2510# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2511# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2512# endif
066ef5b5
GS
2513# include "intrpvar.h"
2514# ifndef USE_THREADS
2515# include "thrdvar.h"
2516# endif
2517# undef PERLVAR
51371543 2518# undef PERLVARA
066ef5b5
GS
2519# undef PERLVARI
2520# undef PERLVARIC
3967c732 2521# else
066ef5b5 2522# define PERLVAR(var,type)
51371543 2523# define PERLVARA(var,n,type)
533c011a
NIS
2524# define PERLVARI(var,type,init) PL_##var = init;
2525# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2526# include "intrpvar.h"
2527# ifndef USE_THREADS
2528# include "thrdvar.h"
2529# endif
2530# undef PERLVAR
51371543 2531# undef PERLVARA
066ef5b5
GS
2532# undef PERLVARI
2533# undef PERLVARIC
2534# endif
cb68f92d
GS
2535#endif
2536
cb68f92d
GS
2537}
2538
76e3520e 2539STATIC void
cea2e8a9 2540S_init_main_stash(pTHX)
79072805 2541{
463ee0b2 2542 GV *gv;
6e72f9df
PP
2543
2544 /* Note that strtab is a rather special HV. Assumptions are made
2545 about not iterating on it, and not adding tie magic to it.
2546 It is properly deallocated in perl_destruct() */
3280af22 2547 PL_strtab = newHV();
5f08fbcd
GS
2548#ifdef USE_THREADS
2549 MUTEX_INIT(&PL_strtab_mutex);
2550#endif
3280af22
NIS
2551 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2552 hv_ksplit(PL_strtab, 512);
ac27b0f5 2553
3280af22 2554 PL_curstash = PL_defstash = newHV();
79cb57f6 2555 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2556 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2557 SvREFCNT_dec(GvHV(gv));
3280af22 2558 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2559 SvREADONLY_on(gv);
3280af22
NIS
2560 HvNAME(PL_defstash) = savepv("main");
2561 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2562 GvMULTI_on(PL_incgv);
2563 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2564 GvMULTI_on(PL_hintgv);
2565 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2566 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2567 GvMULTI_on(PL_errgv);
2568 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2569 GvMULTI_on(PL_replgv);
cea2e8a9 2570 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2571 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2572 sv_setpvn(ERRSV, "", 0);
3280af22 2573 PL_curstash = PL_defstash;
11faa288 2574 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2575 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2576 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2577 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2578 /* We must init $/ before switches are processed. */
864dbfa3 2579 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2580}
2581
76e3520e 2582STATIC void
cea2e8a9 2583S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2584{
6c4ab083 2585 *fdscript = -1;
79072805 2586
3280af22
NIS
2587 if (PL_e_script) {
2588 PL_origfilename = savepv("-e");
96436eeb 2589 }
6c4ab083
GS
2590 else {
2591 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2592 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2593
2594 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2595 char *s = scriptname + 8;
2596 *fdscript = atoi(s);
2597 while (isDIGIT(*s))
2598 s++;
2599 if (*s) {
2600 scriptname = savepv(s + 1);
3280af22
NIS
2601 Safefree(PL_origfilename);
2602 PL_origfilename = scriptname;
6c4ab083
GS
2603 }
2604 }
2605 }
2606
f4dd75d9
GS
2607#ifdef USE_ITHREADS
2608 Safefree(CopFILE(PL_curcop));
2609#else
2610 SvREFCNT_dec(CopFILEGV(PL_curcop));
2611#endif
57843af0 2612 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2613 if (strEQ(PL_origfilename,"-"))
79072805 2614 scriptname = "";
01f988be 2615 if (*fdscript >= 0) {
3280af22 2616 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2617#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2618 if (PL_rsfp)
2619 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2620#endif
2621 }
3280af22 2622 else if (PL_preprocess) {
46fc3d4c 2623 char *cpp_cfg = CPPSTDIN;
79cb57f6 2624 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2625 SV *cmd = NEWSV(0,0);
2626
2627 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2628 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2629 sv_catpv(cpp, cpp_cfg);
79072805 2630
0df16ed7 2631 sv_catpvn(sv, "-I", 2);
fed7345c 2632 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2633
14953ddc
MB
2634 DEBUG_P(PerlIO_printf(Perl_debug_log,
2635 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2636 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2637#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2638 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2639sed %s -e \"/^[^#]/b\" \
2640 -e \"/^#[ ]*include[ ]/b\" \
2641 -e \"/^#[ ]*define[ ]/b\" \
2642 -e \"/^#[ ]*if[ ]/b\" \
2643 -e \"/^#[ ]*ifdef[ ]/b\" \
2644 -e \"/^#[ ]*ifndef[ ]/b\" \
2645 -e \"/^#[ ]*else/b\" \
2646 -e \"/^#[ ]*elif[ ]/b\" \
2647 -e \"/^#[ ]*undef[ ]/b\" \
2648 -e \"/^#[ ]*endif/b\" \
2649 -e \"s/^#.*//\" \
894356b3 2650 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2651 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2652#else
092bebab 2653# ifdef __OPEN_VM
cea2e8a9 2654 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2655%s %s -e '/^[^#]/b' \
2656 -e '/^#[ ]*include[ ]/b' \
2657 -e '/^#[ ]*define[ ]/b' \
2658 -e '/^#[ ]*if[ ]/b' \
2659 -e '/^#[ ]*ifdef[ ]/b' \
2660 -e '/^#[ ]*ifndef[ ]/b' \
2661 -e '/^#[ ]*else/b' \
2662 -e '/^#[ ]*elif[ ]/b' \
2663 -e '/^#[ ]*undef[ ]/b' \
2664 -e '/^#[ ]*endif/b' \
2665 -e 's/^[ ]*#.*//' \
894356b3 2666 %s | %"SVf" %"SVf" %s",
092bebab 2667# else
cea2e8a9 2668 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2669%s %s -e '/^[^#]/b' \
2670 -e '/^#[ ]*include[ ]/b' \
2671 -e '/^#[ ]*define[ ]/b' \
2672 -e '/^#[ ]*if[ ]/b' \
2673 -e '/^#[ ]*ifdef[ ]/b' \
2674 -e '/^#[ ]*ifndef[ ]/b' \
2675 -e '/^#[ ]*else/b' \
2676 -e '/^#[ ]*elif[ ]/b' \
2677 -e '/^#[ ]*undef[ ]/b' \
2678 -e '/^#[ ]*endif/b' \
2679 -e 's/^[ ]*#.*//' \
894356b3 2680 %s | %"SVf" -C %"SVf" %s",
092bebab 2681# endif
79072805
LW
2682#ifdef LOC_SED
2683 LOC_SED,
2684#else
2685 "sed",
2686#endif
3280af22 2687 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2688#endif
46fc3d4c 2689 scriptname, cpp, sv, CPPMINUS);
3280af22 2690 PL_doextract = FALSE;
79072805 2691#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2692 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2693#ifdef HAS_SETEUID
b28d0864 2694 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2695#else
2696#ifdef HAS_SETREUID
b28d0864 2697 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2698#else
2699#ifdef HAS_SETRESUID
b28d0864 2700 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2701#else
b28d0864 2702 PerlProc_setuid(PL_uid);
79072805
LW
2703#endif
2704#endif
85e6fe83 2705#endif
b28d0864 2706 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2707 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2708 }
2709#endif /* IAMSUID */
3280af22 2710 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2711 SvREFCNT_dec(cmd);
2712 SvREFCNT_dec(cpp);
79072805
LW
2713 }
2714 else if (!*scriptname) {
bbce6d69 2715 forbid_setid("program input from stdin");
3280af22 2716 PL_rsfp = PerlIO_stdin();
79072805 2717 }
96436eeb 2718 else {
3280af22 2719 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2720#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2721 if (PL_rsfp)
2722 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2723#endif
2724 }
3280af22 2725 if (!PL_rsfp) {
13281fa4 2726#ifdef DOSUID
a687059c 2727#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2728 if (PL_euid &&
cc49e20b 2729 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2730 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2731 {
46fc3d4c 2732 /* try again */
a7cb1f99 2733 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2734 (int)PERL_REVISION, (int)PERL_VERSION,
2735 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2736 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2737 }
2738#endif
2739#endif
584d69ec
JH
2740#ifdef IAMSUID
2741 errno = EPERM;
2742 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2743 Strerror(errno));
2744#else
cea2e8a9 2745 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2746 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2747#endif
13281fa4 2748 }
79072805 2749}
8d063cd8 2750
7b89560d
JH
2751/* Mention
2752 * I_SYSSTATVFS HAS_FSTATVFS
2753 * I_SYSMOUNT
c890dc6c 2754 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2755 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2756 * here so that metaconfig picks them up. */
2757
104d25b7 2758#ifdef IAMSUID
864dbfa3 2759STATIC int
e688b231 2760S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2761{
0545a864
JH
2762 int check_okay = 0; /* able to do all the required sys/libcalls */
2763 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2764/*
ad27e871 2765 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2766 * fstatvfs() is UNIX98.
0545a864 2767 * fstatfs() is 4.3 BSD.
ad27e871 2768 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2769 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2770 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2771 */
2772
6439433f
JH
2773#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2774
2775# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2776 defined(HAS_FSTATVFS)
2777# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2778 struct statvfs stfs;
6439433f 2779
104d25b7
JH
2780 check_okay = fstatvfs(fd, &stfs) == 0;
2781 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2782# endif /* fstatvfs */
ac27b0f5 2783
6439433f
JH
2784# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2785 defined(PERL_MOUNT_NOSUID) && \
2786 defined(HAS_FSTATFS) && \
2787 defined(HAS_STRUCT_STATFS) && \
2788 defined(HAS_STRUCT_STATFS_F_FLAGS)
2789# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2790 struct statfs stfs;
6439433f 2791
104d25b7 2792 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2793 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2794# endif /* fstatfs */
2795
2796# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2797 defined(PERL_MOUNT_NOSUID) && \
2798 defined(HAS_FSTAT) && \
2799 defined(HAS_USTAT) && \
2800 defined(HAS_GETMNT) && \
2801 defined(HAS_STRUCT_FS_DATA) && \
2802 defined(NOSTAT_ONE)
2803# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2804 struct stat fdst;
6439433f 2805
0545a864 2806 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2807 struct ustat us;
2808 if (ustat(fdst.st_dev, &us) == 0) {
2809 struct fs_data fsd;
2810 /* NOSTAT_ONE here because we're not examining fields which
2811 * vary between that case and STAT_ONE. */
ad27e871 2812 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2813 size_t cmplen = sizeof(us.f_fname);
2814 if (sizeof(fsd.fd_req.path) < cmplen)
2815 cmplen = sizeof(fsd.fd_req.path);
2816 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2817 fdst.st_dev == fsd.fd_req.dev) {
2818 check_okay = 1;
2819 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2820 }
2821 }
2822 }
2823 }
0545a864 2824 }
6439433f
JH
2825# endif /* fstat+ustat+getmnt */
2826
2827# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2828 defined(HAS_GETMNTENT) && \
2829 defined(HAS_HASMNTOPT) && \
2830 defined(MNTOPT_NOSUID)
2831# define FD_ON_NOSUID_CHECK_OKAY
2832 FILE *mtab = fopen("/etc/mtab", "r");
2833 struct mntent *entry;
2834 struct stat stb, fsb;
104d25b7
JH
2835
2836 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2837 while (entry = getmntent(mtab)) {
2838 if (stat(entry->mnt_dir, &fsb) == 0
2839 && fsb.st_dev == stb.st_dev)
2840 {
2841 /* found the filesystem */
2842 check_okay = 1;
2843 if (hasmntopt(entry, MNTOPT_NOSUID))
2844 on_nosuid = 1;
2845 break;
2846 } /* A single fs may well fail its stat(). */
2847 }
104d25b7
JH
2848 }
2849 if (mtab)
6439433f
JH
2850 fclose(mtab);
2851# endif /* getmntent+hasmntopt */
0545a864 2852
ac27b0f5 2853 if (!check_okay)
0545a864 2854 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2855 return on_nosuid;
2856}
2857#endif /* IAMSUID */
2858
76e3520e 2859STATIC void
cea2e8a9 2860S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2861{
155aba94 2862#ifdef IAMSUID
96436eeb 2863 int which;
155aba94 2864#endif
96436eeb 2865
13281fa4
LW
2866 /* do we need to emulate setuid on scripts? */
2867
2868 /* This code is for those BSD systems that have setuid #! scripts disabled
2869 * in the kernel because of a security problem. Merely defining DOSUID
2870 * in perl will not fix that problem, but if you have disabled setuid
2871 * scripts in the kernel, this will attempt to emulate setuid and setgid
2872 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2873 * root version must be called suidperl or sperlN.NNN. If regular perl
2874 * discovers that it has opened a setuid script, it calls suidperl with
2875 * the same argv that it had. If suidperl finds that the script it has
2876 * just opened is NOT setuid root, it sets the effective uid back to the
2877 * uid. We don't just make perl setuid root because that loses the
2878 * effective uid we had before invoking perl, if it was different from the
2879 * uid.
13281fa4
LW
2880 *
2881 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2882 * be defined in suidperl only. suidperl must be setuid root. The
2883 * Configure script will set this up for you if you want it.
2884 */
a687059c 2885
13281fa4 2886#ifdef DOSUID
6e72f9df 2887 char *s, *s2;
a0d0e21e 2888
b28d0864 2889 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2890 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2891 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2892 I32 len;
2d8e6c8d 2893 STRLEN n_a;
13281fa4 2894
a687059c 2895#ifdef IAMSUID
fe14fcc3 2896#ifndef HAS_SETREUID
a687059c
LW
2897 /* On this access check to make sure the directories are readable,
2898 * there is actually a small window that the user could use to make
2899 * filename point to an accessible directory. So there is a faint
2900 * chance that someone could execute a setuid script down in a
2901 * non-accessible directory. I don't know what to do about that.
2902 * But I don't think it's too important. The manual lies when
2903 * it says access() is useful in setuid programs.
2904 */
cc49e20b 2905 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2906 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2907#else
2908 /* If we can swap euid and uid, then we can determine access rights
2909 * with a simple stat of the file, and then compare device and
2910 * inode to make sure we did stat() on the same file we opened.
2911 * Then we just have to make sure he or she can execute it.
2912 */
2913 {
2914 struct stat tmpstatbuf;
2915
85e6fe83
LW
2916 if (
2917#ifdef HAS_SETREUID
b28d0864 2918 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2919#else
2920# if HAS_SETRESUID
b28d0864 2921 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2922# endif
85e6fe83 2923#endif
b28d0864 2924 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2925 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2926 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2927 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2928#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2929 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2930 Perl_croak(aTHX_ "Permission denied");
104d25b7 2931#endif
b28d0864
NIS
2932 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2933 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2934 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2935 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2936 }
85e6fe83
LW
2937 if (
2938#ifdef HAS_SETREUID
b28d0864 2939 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2940#else
2941# if defined(HAS_SETRESUID)
b28d0864 2942 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2943# endif
85e6fe83 2944#endif
b28d0864 2945 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2946 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2947 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2948 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2949 }
fe14fcc3 2950#endif /* HAS_SETREUID */
a687059c
LW
2951#endif /* IAMSUID */
2952
b28d0864 2953 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2954 Perl_croak(aTHX_ "Permission denied");
b28d0864 2955 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2956 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2957 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2958 CopLINE_inc(PL_curcop);
6b88bc9c 2959 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2960 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2961 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2962 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2963 if (*s == ' ') s++;
45d8adaa 2964 while (!isSPACE(*s)) s++;
2d8e6c8d 2965 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2966 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2967 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2968 Perl_croak(aTHX_ "Not a perl script");
a687059c 2969 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2970 /*
2971 * #! arg must be what we saw above. They can invoke it by
2972 * mentioning suidperl explicitly, but they may not add any strange
2973 * arguments beyond what #! says if they do invoke suidperl that way.
2974 */
2975 len = strlen(validarg);
2976 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2977 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2978 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
2979
2980#ifndef IAMSUID
b28d0864
NIS
2981 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2982 PL_euid == PL_statbuf.st_uid)
2983 if (!PL_do_undump)
cea2e8a9 2984 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2985FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2986#endif /* IAMSUID */
13281fa4 2987
b28d0864
NIS
2988 if (PL_euid) { /* oops, we're not the setuid root perl */
2989 (void)PerlIO_close(PL_rsfp);
13281fa4 2990#ifndef IAMSUID
46fc3d4c 2991 /* try again */
a7cb1f99 2992 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2993 (int)PERL_REVISION, (int)PERL_VERSION,
2994 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2995#endif
cea2e8a9 2996 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2997 }
2998
b28d0864 2999 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3000#ifdef HAS_SETEGID
b28d0864 3001 (void)setegid(PL_statbuf.st_gid);
a687059c 3002#else
fe14fcc3 3003#ifdef HAS_SETREGID
b28d0864 3004 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3005#else
3006#ifdef HAS_SETRESGID
b28d0864 3007 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3008#else
b28d0864 3009 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3010#endif
3011#endif
85e6fe83 3012#endif
b28d0864 3013 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3014 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3015 }
b28d0864
NIS
3016 if (PL_statbuf.st_mode & S_ISUID) {
3017 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3018#ifdef HAS_SETEUID
b28d0864 3019 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3020#else
fe14fcc3 3021#ifdef HAS_SETREUID
b28d0864 3022 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3023#else
3024#ifdef HAS_SETRESUID
b28d0864 3025 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3026#else
b28d0864 3027 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3028#endif
3029#endif
85e6fe83 3030#endif
b28d0864 3031 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3032 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3033 }
b28d0864 3034 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3035#ifdef HAS_SETEUID
b28d0864 3036 (void)seteuid((Uid_t)PL_uid);
a687059c 3037#else
fe14fcc3 3038#ifdef HAS_SETREUID
b28d0864 3039 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3040#else
85e6fe83 3041#ifdef HAS_SETRESUID
b28d0864 3042 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3043#else
b28d0864 3044 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3045#endif
a687059c
LW
3046#endif
3047#endif
b28d0864 3048 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3049 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3050 }
748a9306 3051 init_ids();
b28d0864 3052 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3053 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3054 }
3055#ifdef IAMSUID
6b88bc9c 3056 else if (PL_preprocess)
cea2e8a9 3057 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3058 else if (fdscript >= 0)
cea2e8a9 3059 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3060 else
cea2e8a9 3061 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3062
3063 /* We absolutely must clear out any saved ids here, so we */
3064 /* exec the real perl, substituting fd script for scriptname. */
3065 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3066 PerlIO_rewind(PL_rsfp);
3067 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3068 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3069 if (!PL_origargv[which])
cea2e8a9
GS
3070 Perl_croak(aTHX_ "Permission denied");
3071 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3072 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3073#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3074 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3075#endif
a7cb1f99 3076 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3077 (int)PERL_REVISION, (int)PERL_VERSION,
3078 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3079 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3080#endif /* IAMSUID */
a687059c 3081#else /* !DOSUID */
3280af22 3082 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3083#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3084 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3085 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3086 ||
b28d0864 3087 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3088 )
b28d0864 3089 if (!PL_do_undump)
cea2e8a9 3090 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3091FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3092#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3093 /* not set-id, must be wrapped */
a687059c 3094 }
13281fa4 3095#endif /* DOSUID */
79072805 3096}
13281fa4 3097
76e3520e 3098STATIC void
cea2e8a9 3099S_find_beginning(pTHX)
79072805 3100{
6e72f9df 3101 register char *s, *s2;
33b78306
LW
3102
3103 /* skip forward in input to the real script? */
3104
bbce6d69 3105 forbid_setid("-x");
bf4acbe4 3106#ifdef MACOS_TRADITIONAL
084592ab 3107 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3108
bf4acbe4
GS
3109 while (PL_doextract || gMacPerl_AlwaysExtract) {
3110 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3111 if (!gMacPerl_AlwaysExtract)
3112 Perl_croak(aTHX_ "No Perl script found in input\n");
3113
3114 if (PL_doextract) /* require explicit override ? */
3115 if (!OverrideExtract(PL_origfilename))
3116 Perl_croak(aTHX_ "User aborted script\n");
3117 else
3118 PL_doextract = FALSE;
3119
3120 /* Pater peccavi, file does not have #! */
3121 PerlIO_rewind(PL_rsfp);
ac27b0f5 3122
bf4acbe4
GS
3123 break;
3124 }
3125#else
3280af22
NIS
3126 while (PL_doextract) {
3127 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3128 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3129#endif
6e72f9df 3130 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS
3131 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3132 PL_doextract = FALSE;
6e72f9df
PP
3133 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3134 s2 = s;
3135 while (*s == ' ' || *s == '\t') s++;
3136 if (*s++ == '-') {
3137 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3138 if (strnEQ(s2-4,"perl",4))
3139 /*SUPPRESS 530*/
155aba94
GS
3140 while ((s = moreswitches(s)))
3141 ;
33b78306 3142 }
95e8664e
CN
3143#ifdef MACOS_TRADITIONAL
3144 break;
3145#endif
83025b21
LW
3146 }
3147 }
3148}
3149
afe37c7d 3150
76e3520e 3151STATIC void
cea2e8a9 3152S_init_ids(pTHX)
352d5a3a 3153{
d8eceb89
JH
3154 PL_uid = PerlProc_getuid();
3155 PL_euid = PerlProc_geteuid();
3156 PL_gid = PerlProc_getgid();
3157 PL_egid = PerlProc_getegid();
748a9306 3158#ifdef VMS
b28d0864
NIS
3159 PL_uid |= PL_gid << 16;
3160 PL_euid |= PL_egid << 16;
748a9306 3161#endif
3280af22 3162 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3163}
79072805 3164
76e3520e 3165STATIC void
cea2e8a9 3166S_forbid_setid(pTHX_ char *s)
bbce6d69 3167{
3280af22 3168 if (PL_euid != PL_uid)
cea2e8a9 3169 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3170 if (PL_egid != PL_gid)
cea2e8a9 3171 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3172}
3173
1ee4443e
IZ
3174void
3175Perl_init_debugger(pTHX)
748a9306 3176{
1ee4443e
IZ
3177 HV *ostash = PL_curstash;
3178
3280af22
NIS
3179 PL_curstash = PL_debstash;
3180 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3181 AvREAL_off(PL_dbargs);
3182 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3183 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3184 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3185 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3186 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3187 sv_setiv(PL_DBsingle, 0);
3280af22 3188 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3189 sv_setiv(PL_DBtrace, 0);
3280af22 3190 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3191 sv_setiv(PL_DBsignal, 0);
1ee4443e 3192 PL_curstash = ostash;
352d5a3a
LW
3193}
3194
2ce36478
SM
3195#ifndef STRESS_REALLOC
3196#define REASONABLE(size) (size)
3197#else
3198#define REASONABLE(size) (1) /* unreasonable */
3199#endif
3200
11343788 3201void
cea2e8a9 3202Perl_init_stacks(pTHX)
79072805 3203{
e336de0d 3204 /* start with 128-item stack and 8K cxstack */
3280af22 3205 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3206 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3207 PL_curstackinfo->si_type = PERLSI_MAIN;
3208 PL_curstack = PL_curstackinfo->si_stack;
3209 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3210
3280af22
NIS
3211 PL_stack_base = AvARRAY(PL_curstack);
3212 PL_stack_sp = PL_stack_base;
3213 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3214
3280af22
NIS
3215 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3216 PL_tmps_floor = -1;
3217 PL_tmps_ix = -1;
3218 PL_tmps_max = REASONABLE(128);
8990e307 3219
3280af22
NIS
3220 New(54,PL_markstack,REASONABLE(32),I32);
3221 PL_markstack_ptr = PL_markstack;
3222 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3223
ce2f7c3b 3224 SET_MARK_OFFSET;
e336de0d 3225
3280af22
NIS
3226 New(54,PL_scopestack,REASONABLE(32),I32);
3227 PL_scopestack_ix = 0;
3228 PL_scopestack_max = REASONABLE(32);
79072805 3229
3280af22
NIS
3230 New(54,PL_savestack,REASONABLE(128),ANY);
3231 PL_savestack_ix = 0;
3232 PL_savestack_max = REASONABLE(128);
79072805 3233
3280af22
NIS
3234 New(54,PL_retstack,REASONABLE(16),OP*);
3235 PL_retstack_ix = 0;
3236 PL_retstack_max = REASONABLE(16);
378cc40b 3237}
33b78306 3238
2ce36478
SM
3239#undef REASONABLE
3240
76e3520e 3241STATIC void
cea2e8a9 3242S_nuke_stacks(pTHX)
6e72f9df 3243{
3280af22
NIS
3244 while (PL_curstackinfo->si_next)
3245 PL_curstackinfo = PL_curstackinfo->si_next;
3246 while (PL_curstackinfo) {
3247 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3248 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3249 Safefree(PL_curstackinfo->si_cxstack);
3250 Safefree(PL_curstackinfo);
3251 PL_curstackinfo = p;
e336de0d 3252 }
3280af22
NIS
3253 Safefree(PL_tmps_stack);
3254 Safefree(PL_markstack);
3255 Safefree(PL_scopestack);
3256 Safefree(PL_savestack);
3257 Safefree(PL_retstack);
378cc40b 3258}
33b78306 3259
76e3520e 3260#ifndef PERL_OBJECT
760ac839 3261static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3262#endif
7aa04957 3263
76e3520e 3264STATIC void
cea2e8a9 3265S_init_lexer(pTHX)
8990e307 3266{
76e3520e
GS
3267#ifdef PERL_OBJECT
3268 PerlIO *tmpfp;
3269#endif
3280af22
NIS
3270 tmpfp = PL_rsfp;
3271 PL_rsfp = Nullfp;
3272 lex_start(PL_linestr);
3273 PL_rsfp = tmpfp;
79cb57f6 3274 PL_subname = newSVpvn("main",4);
8990e307
LW
3275}
3276
76e3520e 3277STATIC void
cea2e8a9 3278S_init_predump_symbols(pTHX)
45d8adaa 3279{
93a17b20 3280 GV *tmpgv;
af8c498a 3281 IO *io;
79072805 3282
864dbfa3 3283 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3284 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3285 GvMULTI_on(PL_stdingv);
af8c498a 3286 io = GvIOp(PL_stdingv);
a04651f4 3287 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3288 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3289 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3290 GvMULTI_on(tmpgv);
af8c498a 3291 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3292
85e6fe83 3293 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3294 GvMULTI_on(tmpgv);
af8c498a 3295 io = GvIOp(tmpgv);
a04651f4 3296 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3297 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3298 setdefout(tmpgv);
adbc6bb1 3299 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3300 GvMULTI_on(tmpgv);
af8c498a 3301 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3302
bf49b057
GS
3303 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3304 GvMULTI_on(PL_stderrgv);
3305 io = GvIOp(PL_stderrgv);
a04651f4 3306 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3307 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3308 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3309 GvMULTI_on(tmpgv);
af8c498a 3310 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3311
3280af22 3312 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3313
bf4acbe4
GS
3314 if (PL_osname)
3315 Safefree(PL_osname);
3316 PL_osname = savepv(OSNAME);
79072805 3317}
33b78306 3318
76e3520e 3319STATIC void
cea2e8a9 3320S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3321{
79072805
LW
3322 char *s;
3323 SV *sv;
3324 GV* tmpgv;
9cbac4c7 3325#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3326 char **dup_env_base = 0;
103a7189 3327 int dup_env_count = 0;
9cbac4c7 3328#endif
fe14fcc3 3329
79072805 3330 argc--,argv++; /* skip name of script */
3280af22 3331 if (PL_doswitches) {
79072805
LW
3332 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3333 if (!argv[0][1])
3334 break;
379d538a 3335 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3336 argc--,argv++;
3337 break;
3338 }
155aba94 3339 if ((s = strchr(argv[0], '='))) {
79072805 3340 *s++ = '\0';
85e6fe83 3341 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3342 }
3343 else
85e6fe83 3344 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3345 }
79072805 3346 }
3280af22
NIS
3347 PL_toptarget = NEWSV(0,0);
3348 sv_upgrade(PL_toptarget, SVt_PVFM);
3349 sv_setpvn(PL_toptarget, "", 0);
3350 PL_bodytarget = NEWSV(0,0);
3351 sv_upgrade(PL_bodytarget, SVt_PVFM);
3352 sv_setpvn(PL_bodytarget, "", 0);
3353 PL_formtarget = PL_bodytarget;
79072805 3354
bbce6d69 3355 TAINT;
155aba94 3356 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3357#ifdef MACOS_TRADITIONAL
3358 /* $0 is not majick on a Mac */
3359 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3360#else
3280af22 3361 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3362 magicname("0", "0", 1);
bf4acbe4 3363#endif
79072805 3364 }
155aba94 3365 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3366#ifdef OS2
23da6c43 3367 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3368#else
3280af22 3369 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3370#endif
155aba94 3371 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3372 GvMULTI_on(PL_argvgv);
3373 (void)gv_AVadd(PL_argvgv);
3374 av_clear(GvAVn(PL_argvgv));
79072805 3375 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3376 SV *sv = newSVpv(argv[0],0);
3377 av_push(GvAVn(PL_argvgv),sv);
3378 if (PL_widesyscalls)
e84ff256 3379 (void)sv_utf8_decode(sv);
79072805
LW
3380 }
3381 }
155aba94 3382 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3383 HV *hv;
3280af22
NIS
3384 GvMULTI_on(PL_envgv);
3385 hv = GvHVn(PL_envgv);
14befaf4 3386 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3387#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3388 /* Note that if the supplied env parameter is actually a copy
3389 of the global environ then it may now point to free'd memory
3390 if the environment has been modified since. To avoid this
3391 problem we treat env==NULL as meaning 'use the default'
3392 */
3393 if (!env)
3394 env = environ;
5aabfad6 3395 if (env != environ)
79072805 3396 environ[0] = Nullch;
103a7189
JH
3397#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3398 {
3399 char **env_base;
9041c2e3 3400 for (env_base = env; *env; env++)
103a7189
JH
3401 dup_env_count++;
3402 if ((dup_env_base = (char **)
480bfd1e 3403 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH
3404 char **dup_env;
3405 for (env = env_base, dup_env = dup_env_base;
3406 *env;
480bfd1e
JH
3407 env++, dup_env++) {
3408 /* With environ one needs to use safesysmalloc(). */
3409 *dup_env = safesysmalloc(strlen(*env) + 1);
3410 (void)strcpy(*dup_env, *env);
3411 }
103a7189
JH
3412 *dup_env = Nullch;
3413 env = dup_env_base;
3414 } /* else what? */
3415 }
3416#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3417 for (; *env; env++) {
93a17b20 3418 if (!(s = strchr(*env,'=')))
79072805
LW
3419 continue;
3420 *s++ = '\0';
60ce6247 3421#if defined(MSDOS)
137443ea
PP
3422 (void)strupr(*env);
3423#endif
79072805
LW
3424 sv = newSVpv(s--,0);
3425 (void)hv_store(hv, *env, s - *env, sv, 0);
3426 *s = '=';
fe14fcc3 3427 }
480bfd1e 3428#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH
3429 if (dup_env_base) {
3430 char **dup_env;
3431 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH
3432 safesysfree(*dup_env);
3433 safesysfree(dup_env_base);
103a7189 3434 }
7e0f6a1f 3435#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3436#endif /* USE_ENVIRON_ARRAY */
4550b24a
PP
3437#ifdef DYNAMIC_ENV_FETCH
3438 HvNAME(hv) = savepv(ENV_HV_NAME);
3439#endif
79072805 3440 }
bbce6d69 3441 TAINT_NOT;
155aba94 3442 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3443 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3444}
34de22dd 3445
76e3520e 3446STATIC void
cea2e8a9 3447S_init_perllib(pTHX)
34de22dd 3448{
85e6fe83 3449 char *s;
3280af22 3450 if (!PL_tainting) {
552a7a9b 3451#ifndef VMS
76e3520e 3452 s = PerlEnv_getenv("PERL5LIB");
85e6fe83