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[perl5.git] / perl.c
CommitLineData
a0d0e21e
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1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
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5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
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8 */
9
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10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
26#endif
27
0cb96387
GS
28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW
36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS
43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS
50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS
67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS
73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS
85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS
87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS
94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS
102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS
104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS
106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS
112#endif
113
32e30700
GS
114 return my_perl;
115}
116#else
954c1994
GS
117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS
140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1 151#ifdef USE_THREADS
a863c7d1 152#ifndef FAKE_THREADS
e1f15930 153 struct perl_thread *thr = NULL;
a863c7d1
MB
154#endif /* FAKE_THREADS */
155#endif /* USE_THREADS */
ba869deb 156
8990e307 157#ifdef MULTIPLICITY
54aff467 158 init_interp();
ac27b0f5 159 PL_perl_destruct_level = 1;
54aff467
GS
160#else
161 if (PL_perl_destruct_level > 0)
162 init_interp();
163#endif
164
33f46ff6 165 /* Init the real globals (and main thread)? */
3280af22 166 if (!PL_linestr) {
1feb2720 167#ifdef USE_THREADS
533c011a 168 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB
169 /*
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
172 */
533c011a
NIS
173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
ba869deb 177# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 178 MUTEX_INIT(&PL_svref_mutex);
ba869deb 179# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 180
5ff3f7a4 181 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS
182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 184
199100c8 185 thr = init_main_thread();
11343788
MB
186#endif /* USE_THREADS */
187
14dd3ad8 188#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 190#endif
312caa8e 191
2aea9f8a
GS
192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193
3280af22
NIS
194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 196
3280af22 197 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
198 /* set read-only and try to insure than we wont see REFCNT==0
199 very often */
200
3280af22
NIS
201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 203
3280af22
NIS
204 sv_setpv(&PL_sv_no,PL_No);
205 SvNV(&PL_sv_no);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 208
3280af22
NIS
209 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvNV(&PL_sv_yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 213 }
79072805 214
76e3520e
GS
215#ifdef PERL_OBJECT
216 /* TODO: */
6b88bc9c 217 /* PL_sighandlerp = sighandler; */
76e3520e 218#else
cea2e8a9 219 PL_sighandlerp = Perl_sighandler;
76e3520e 220#endif
3280af22 221 PL_pidstatus = newHV();
44a8e56a 222
79072805
LW
223#ifdef MSDOS
224 /*
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
227 * filehandles.
228 */
229 (void)fclose(stdaux);
230 (void)fclose(stdprn);
231#endif
232 }
233
79cb57f6 234 PL_nrs = newSVpvn("\n", 1);
3280af22 235 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 236
cea2e8a9 237 init_stacks();
79072805 238
748a9306 239 init_ids();
3280af22 240 PL_lex_state = LEX_NOTPARSING;
a5f75d66 241
312caa8e 242 JMPENV_BOOTSTRAP;
f86702cc
PP
243 STATUS_ALL_SUCCESS;
244
0672f40e 245 init_i18nl10n(1);
36477c24 246 SET_NUMERIC_STANDARD();
0b5b802d 247
a7cb1f99
GS
248 {
249 U8 *s;
250 PL_patchlevel = NEWSV(0,4);
155aba94 251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 254 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS
259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS
267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
275#endif
276
52853b95
GS
277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
8990e307 286
8990e307 287 ENTER;
79072805
LW
288}
289
954c1994
GS
290/*
291=for apidoc perl_destruct
292
293Shuts down a Perl interpreter. See L<perlembed>.
294
295=cut
296*/
297
79072805 298void
0cb96387 299perl_destruct(pTHXx)
79072805 300{
748a9306 301 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 302 HV *hv;
1f2bfc8a 303#ifdef USE_THREADS
33f46ff6 304 Thread t;
cea2e8a9 305 dTHX;
1f2bfc8a 306#endif /* USE_THREADS */
8990e307 307
7766f137
GS
308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
310
11343788 311#ifdef USE_THREADS
0f15f207 312#ifndef FAKE_THREADS
8023c3ce
MB
313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
314 retry_cleanup:
533c011a 315 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 316 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 317 "perl_destruct: waiting for %d threads...\n",
533c011a 318 PL_nthreads - 1));
33f46ff6 319 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
322 AV *av;
c7848ba1 323 case THRf_ZOMBIE:
bf49b057 324 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 325 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
533c011a 328 PL_nthreads--;
8023c3ce
MB
329 /*
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
333 * all over again.
334 */
533c011a 335 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 336 JOIN(t, &av);
605e5515 337 SvREFCNT_dec((SV*)av);
bf49b057 338 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 339 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 340 goto retry_cleanup;
c7848ba1 341 case THRf_R_JOINABLE:
bf49b057 342 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 345 /*
c7848ba1
MB
346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
350 */
533c011a 351 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
352 DETACH(t);
353 MUTEX_UNLOCK(&t->mutex);
8023c3ce 354 goto retry_cleanup;
c7848ba1 355 default:
bf49b057 356 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
357 "perl_destruct: ignoring %p (state %u)\n",
358 t, ThrSTATE(t)));
359 MUTEX_UNLOCK(&t->mutex);
c7848ba1 360 /* fall through and out */
33f46ff6
MB
361 }
362 }
8023c3ce
MB
363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
364
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 366 while (PL_nthreads > 1)
11343788 367 {
bf49b057 368 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 369 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
370 PL_nthreads - 1));
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
372 }
373 /* At this point, we're the last thread */
533c011a 374 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
b57a092c 378 PL_nthreads--;
0f15f207 379#endif /* !defined(FAKE_THREADS) */
11343788
MB
380#endif /* USE_THREADS */
381
3280af22 382 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
383#ifdef DEBUGGING
384 {
385 char *s;
155aba94 386 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
387 int i = atoi(s);
388 if (destruct_level < i)
389 destruct_level = i;
390 }
4633a7c4
LW
391 }
392#endif
393
8990e307 394 LEAVE;
a0d0e21e
LW
395 FREETMPS;
396
13621cfb 397
ff0cee69
PP
398 /* We must account for everything. */
399
400 /* Destroy the main CV and syntax tree */
3280af22
NIS
401 if (PL_main_root) {
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
a0d0e21e 405 }
3280af22
NIS
406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
409 PL_main_cv = Nullcv;
24d3c518 410 PL_dirty = TRUE;
ff0cee69 411
13621cfb
NIS
412 /* Tell PerlIO we are about to tear things apart in case
413 we have layers which are using resources that should
414 be cleaned up now.
415 */
416
417 PerlIO_destruct(aTHX);
418
3280af22 419 if (PL_sv_objcount) {
a0d0e21e
LW
420 /*
421 * Try to destruct global references. We do this first so that the
422 * destructors and destructees still exist. Some sv's might remain.
423 * Non-referenced objects are on their own.
424 */
a0d0e21e 425 sv_clean_objs();
8990e307
LW
426 }
427
5cd24f17 428 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
429 SvREFCNT_dec(PL_warnhook);
430 PL_warnhook = Nullsv;
431 SvREFCNT_dec(PL_diehook);
432 PL_diehook = Nullsv;
5cd24f17 433
4b556e6c 434 /* call exit list functions */
3280af22 435 while (PL_exitlistlen-- > 0)
0cb96387 436 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 437
3280af22 438 Safefree(PL_exitlist);
4b556e6c 439
a0d0e21e 440 if (destruct_level == 0){
8990e307 441
a0d0e21e 442 DEBUG_P(debprofdump());
ac27b0f5 443
a0d0e21e
LW
444 /* The exit() function will do everything that needs doing. */
445 return;
446 }
5dd60ef7 447
551a8b83
JH
448 /* jettison our possibly duplicated environment */
449
450#ifdef USE_ENVIRON_ARRAY
451 if (environ != PL_origenviron) {
452 I32 i;
453
454 for (i = 0; environ[i]; i++)
4b420006
JH
455 safesysfree(environ[i]);
456 /* Must use safesysfree() when working with environ. */
457 safesysfree(environ);
551a8b83
JH
458
459 environ = PL_origenviron;
460 }
461#endif
462
5f05dabc
PP
463 /* loosen bonds of global variables */
464
3280af22
NIS
465 if(PL_rsfp) {
466 (void)PerlIO_close(PL_rsfp);
467 PL_rsfp = Nullfp;
8ebc5c01
PP
468 }
469
470 /* Filters for program text */
3280af22
NIS
471 SvREFCNT_dec(PL_rsfp_filters);
472 PL_rsfp_filters = Nullav;
8ebc5c01
PP
473
474 /* switches */
3280af22
NIS
475 PL_preprocess = FALSE;
476 PL_minus_n = FALSE;
477 PL_minus_p = FALSE;
478 PL_minus_l = FALSE;
479 PL_minus_a = FALSE;
480 PL_minus_F = FALSE;
481 PL_doswitches = FALSE;
599cee73 482 PL_dowarn = G_WARN_OFF;
3280af22
NIS
483 PL_doextract = FALSE;
484 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
485 PL_unsafe = FALSE;
486
487 Safefree(PL_inplace);
488 PL_inplace = Nullch;
a7cb1f99 489 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
490
491 if (PL_e_script) {
492 SvREFCNT_dec(PL_e_script);
493 PL_e_script = Nullsv;
8ebc5c01
PP
494 }
495
496 /* magical thingies */
497
7889fe52
NIS
498 SvREFCNT_dec(PL_ofs_sv); /* $, */
499 PL_ofs_sv = Nullsv;
5f05dabc 500
7889fe52
NIS
501 SvREFCNT_dec(PL_ors_sv); /* $\ */
502 PL_ors_sv = Nullsv;
8ebc5c01 503
3280af22
NIS
504 SvREFCNT_dec(PL_rs); /* $/ */
505 PL_rs = Nullsv;
dc92893f 506
3280af22
NIS
507 SvREFCNT_dec(PL_nrs); /* $/ helper */
508 PL_nrs = Nullsv;
5f05dabc 509
d33b2eba
GS
510 PL_multiline = 0; /* $* */
511 Safefree(PL_osname); /* $^O */
512 PL_osname = Nullch;
5f05dabc 513
3280af22
NIS
514 SvREFCNT_dec(PL_statname);
515 PL_statname = Nullsv;
516 PL_statgv = Nullgv;
5f05dabc 517
8ebc5c01
PP
518 /* defgv, aka *_ should be taken care of elsewhere */
519
8ebc5c01 520 /* clean up after study() */
3280af22
NIS
521 SvREFCNT_dec(PL_lastscream);
522 PL_lastscream = Nullsv;
523 Safefree(PL_screamfirst);
524 PL_screamfirst = 0;
525 Safefree(PL_screamnext);
526 PL_screamnext = 0;
8ebc5c01 527
7d5ea4e7
GS
528 /* float buffer */
529 Safefree(PL_efloatbuf);
530 PL_efloatbuf = Nullch;
531 PL_efloatsize = 0;
532
8ebc5c01 533 /* startup and shutdown function lists */
3280af22
NIS
534 SvREFCNT_dec(PL_beginav);
535 SvREFCNT_dec(PL_endav);
7d30b5c4 536 SvREFCNT_dec(PL_checkav);
3280af22
NIS
537 SvREFCNT_dec(PL_initav);
538 PL_beginav = Nullav;
539 PL_endav = Nullav;
7d30b5c4 540 PL_checkav = Nullav;
3280af22 541 PL_initav = Nullav;
5618dfe8 542
8ebc5c01 543 /* shortcuts just get cleared */
3280af22 544 PL_envgv = Nullgv;
3280af22
NIS
545 PL_incgv = Nullgv;
546 PL_hintgv = Nullgv;
547 PL_errgv = Nullgv;
548 PL_argvgv = Nullgv;
549 PL_argvoutgv = Nullgv;
550 PL_stdingv = Nullgv;
bf49b057 551 PL_stderrgv = Nullgv;
3280af22
NIS
552 PL_last_in_gv = Nullgv;
553 PL_replgv = Nullgv;
5c831c24 554 PL_debstash = Nullhv;
8ebc5c01
PP
555
556 /* reset so print() ends up where we expect */
557 setdefout(Nullgv);
5c831c24 558
7a1c5554
GS
559 SvREFCNT_dec(PL_argvout_stack);
560 PL_argvout_stack = Nullav;
8ebc5c01 561
5c831c24
GS
562 SvREFCNT_dec(PL_modglobal);
563 PL_modglobal = Nullhv;
564 SvREFCNT_dec(PL_preambleav);
565 PL_preambleav = Nullav;
566 SvREFCNT_dec(PL_subname);
567 PL_subname = Nullsv;
568 SvREFCNT_dec(PL_linestr);
569 PL_linestr = Nullsv;
570 SvREFCNT_dec(PL_pidstatus);
571 PL_pidstatus = Nullhv;
572 SvREFCNT_dec(PL_toptarget);
573 PL_toptarget = Nullsv;
574 SvREFCNT_dec(PL_bodytarget);
575 PL_bodytarget = Nullsv;
576 PL_formtarget = Nullsv;
577
d33b2eba 578 /* free locale stuff */
b9582b6a 579#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
580 Safefree(PL_collation_name);
581 PL_collation_name = Nullch;
b9582b6a 582#endif
d33b2eba 583
b9582b6a 584#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
585 Safefree(PL_numeric_name);
586 PL_numeric_name = Nullch;
a453c169 587 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 588#endif
d33b2eba 589
5c831c24
GS
590 /* clear utf8 character classes */
591 SvREFCNT_dec(PL_utf8_alnum);
592 SvREFCNT_dec(PL_utf8_alnumc);
593 SvREFCNT_dec(PL_utf8_ascii);
594 SvREFCNT_dec(PL_utf8_alpha);
595 SvREFCNT_dec(PL_utf8_space);
596 SvREFCNT_dec(PL_utf8_cntrl);
597 SvREFCNT_dec(PL_utf8_graph);
598 SvREFCNT_dec(PL_utf8_digit);
599 SvREFCNT_dec(PL_utf8_upper);
600 SvREFCNT_dec(PL_utf8_lower);
601 SvREFCNT_dec(PL_utf8_print);
602 SvREFCNT_dec(PL_utf8_punct);
603 SvREFCNT_dec(PL_utf8_xdigit);
604 SvREFCNT_dec(PL_utf8_mark);
605 SvREFCNT_dec(PL_utf8_toupper);
606 SvREFCNT_dec(PL_utf8_tolower);
607 PL_utf8_alnum = Nullsv;
608 PL_utf8_alnumc = Nullsv;
609 PL_utf8_ascii = Nullsv;
610 PL_utf8_alpha = Nullsv;
611 PL_utf8_space = Nullsv;
612 PL_utf8_cntrl = Nullsv;
613 PL_utf8_graph = Nullsv;
614 PL_utf8_digit = Nullsv;
615 PL_utf8_upper = Nullsv;
616 PL_utf8_lower = Nullsv;
617 PL_utf8_print = Nullsv;
618 PL_utf8_punct = Nullsv;
619 PL_utf8_xdigit = Nullsv;
620 PL_utf8_mark = Nullsv;
621 PL_utf8_toupper = Nullsv;
622 PL_utf8_totitle = Nullsv;
623 PL_utf8_tolower = Nullsv;
624
971a9dd3
GS
625 if (!specialWARN(PL_compiling.cop_warnings))
626 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 627 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
628 if (!specialCopIO(PL_compiling.cop_io))
629 SvREFCNT_dec(PL_compiling.cop_io);
630 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
631#ifdef USE_ITHREADS
632 Safefree(CopFILE(&PL_compiling));
633 CopFILE(&PL_compiling) = Nullch;
634 Safefree(CopSTASHPV(&PL_compiling));
635#else
01724ea0 636 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
637 CopFILEGV(&PL_compiling) = Nullgv;
638 /* cop_stash is not refcounted */
01724ea0 639#endif
5c831c24 640
a0d0e21e 641 /* Prepare to destruct main symbol table. */
5f05dabc 642
3280af22
NIS
643 hv = PL_defstash;
644 PL_defstash = 0;
a0d0e21e 645 SvREFCNT_dec(hv);
5c831c24
GS
646 SvREFCNT_dec(PL_curstname);
647 PL_curstname = Nullsv;
a0d0e21e 648
5a844595
GS
649 /* clear queued errors */
650 SvREFCNT_dec(PL_errors);
651 PL_errors = Nullsv;
652
a0d0e21e 653 FREETMPS;
0453d815 654 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 655 if (PL_scopestack_ix != 0)
0453d815
PM
656 Perl_warner(aTHX_ WARN_INTERNAL,
657 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
658 (long)PL_scopestack_ix);
659 if (PL_savestack_ix != 0)
0453d815
PM
660 Perl_warner(aTHX_ WARN_INTERNAL,
661 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
662 (long)PL_savestack_ix);
663 if (PL_tmps_floor != -1)
0453d815 664 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 665 (long)PL_tmps_floor + 1);
a0d0e21e 666 if (cxstack_ix != -1)
0453d815 667 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 668 (long)cxstack_ix + 1);
a0d0e21e 669 }
8990e307
LW
670
671 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 672 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 673 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
674
675 /* the 2 is for PL_fdpid and PL_strtab */
676 while (PL_sv_count > 2 && sv_clean_all())
677 ;
678
d33b2eba
GS
679 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
680 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
681 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
682 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 683
d4777f27
GS
684 AvREAL_off(PL_fdpid); /* no surviving entries */
685 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
686 PL_fdpid = Nullav;
687
6c644e78
GS
688#ifdef HAVE_INTERP_INTERN
689 sys_intern_clear();
690#endif
691
6e72f9df
PP
692 /* Destruct the global string table. */
693 {
694 /* Yell and reset the HeVAL() slots that are still holding refcounts,
695 * so that sv_free() won't fail on them.
696 */
697 I32 riter;
698 I32 max;
699 HE *hent;
700 HE **array;
701
702 riter = 0;
3280af22
NIS
703 max = HvMAX(PL_strtab);
704 array = HvARRAY(PL_strtab);
6e72f9df
PP
705 hent = array[0];
706 for (;;) {
0453d815
PM
707 if (hent && ckWARN_d(WARN_INTERNAL)) {
708 Perl_warner(aTHX_ WARN_INTERNAL,
709 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
710 HeVAL(hent) - Nullsv, HeKEY(hent));
711 HeVAL(hent) = Nullsv;
712 hent = HeNEXT(hent);
713 }
714 if (!hent) {
715 if (++riter > max)
716 break;
717 hent = array[riter];
718 }
719 }
720 }
3280af22 721 SvREFCNT_dec(PL_strtab);
6e72f9df 722
e652bb2f 723#ifdef USE_ITHREADS
a0739874
DM
724 /* free the pointer table used for cloning */
725 ptr_table_free(PL_ptr_table);
53186e96 726#endif
a0739874 727
d33b2eba
GS
728 /* free special SVs */
729
730 SvREFCNT(&PL_sv_yes) = 0;
731 sv_clear(&PL_sv_yes);
732 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 733 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
734
735 SvREFCNT(&PL_sv_no) = 0;
736 sv_clear(&PL_sv_no);
737 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 738 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
739
740 SvREFCNT(&PL_sv_undef) = 0;
741 SvREADONLY_off(&PL_sv_undef);
d33b2eba 742
0453d815
PM
743 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
744 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 745
3280af22 746 Safefree(PL_origfilename);
3280af22 747 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
748 if (PL_reg_curpm)
749 Safefree(PL_reg_curpm);
82ba1be6 750 Safefree(PL_reg_poscache);
3280af22
NIS
751 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
752 Safefree(PL_op_mask);
cf36064f
GS
753 Safefree(PL_psig_ptr);
754 Safefree(PL_psig_name);
2c2666fc 755 Safefree(PL_bitcount);
ce08f86c 756 Safefree(PL_psig_pend);
6e72f9df 757 nuke_stacks();
3280af22 758 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 759
a0d0e21e 760 DEBUG_P(debprofdump());
11343788 761#ifdef USE_THREADS
5f08fbcd 762 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
763 MUTEX_DESTROY(&PL_sv_mutex);
764 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 765 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 766 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 767 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
768#ifdef EMULATE_ATOMIC_REFCOUNTS
769 MUTEX_DESTROY(&PL_svref_mutex);
770#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 771
8023c3ce 772 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
773 Safefree(SvPVX(PL_thrsv));
774 Safefree(SvANY(PL_thrsv));
775 Safefree(PL_thrsv);
776 PL_thrsv = Nullsv;
8023c3ce 777#endif /* USE_THREADS */
d33b2eba 778
612f20c3
GS
779 sv_free_arenas();
780
fc36a67e
PP
781 /* As the absolutely last thing, free the non-arena SV for mess() */
782
3280af22 783 if (PL_mess_sv) {
9c63abab
GS
784 /* it could have accumulated taint magic */
785 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
786 MAGIC* mg;
787 MAGIC* moremagic;
788 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
789 moremagic = mg->mg_moremagic;
14befaf4
DM
790 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
791 && mg->mg_len >= 0)
9c63abab
GS
792 Safefree(mg->mg_ptr);
793 Safefree(mg);
794 }
795 }
fc36a67e 796 /* we know that type >= SVt_PV */
155aba94 797 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
798 Safefree(SvPVX(PL_mess_sv));
799 Safefree(SvANY(PL_mess_sv));
800 Safefree(PL_mess_sv);
801 PL_mess_sv = Nullsv;
fc36a67e 802 }
79072805
LW
803}
804
954c1994
GS
805/*
806=for apidoc perl_free
807
808Releases a Perl interpreter. See L<perlembed>.
809
810=cut
811*/
812
79072805 813void
0cb96387 814perl_free(pTHXx)
79072805 815{
c5be433b 816#if defined(PERL_OBJECT)
7f0d82f7 817 PerlMem_free(this);
76e3520e 818#else
2986a63f 819# if defined(WIN32) || defined(NETWARE)
ce3e5b80 820# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH
821 #ifdef NETWARE
822 void *host = nw_internal_host;
823 #else
824 void *host = w32_internal_host;
825 #endif
826 #ifndef NETWARE
827 if (PerlProc_lasthost()) {
ce08f86c 828 PerlIO_cleanup();
2986a63f
JH
829 }
830 #endif
7f0d82f7 831 PerlMem_free(aTHXx);
2986a63f
JH
832 #ifdef NETWARE
833 nw5_delete_internal_host(host);
834 #else
835 win32_delete_internal_host(host);
836 #endif
ce3e5b80 837#else
ce08f86c 838 PerlIO_cleanup();
ce3e5b80
NIS
839 PerlMem_free(aTHXx);
840#endif
1c0ca838
GS
841# else
842 PerlMem_free(aTHXx);
843# endif
76e3520e 844#endif
79072805
LW
845}
846
4b556e6c 847void
864dbfa3 848Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 849{
3280af22
NIS
850 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
851 PL_exitlist[PL_exitlistlen].fn = fn;
852 PL_exitlist[PL_exitlistlen].ptr = ptr;
853 ++PL_exitlistlen;
4b556e6c
JD
854}
855
954c1994
GS
856/*
857=for apidoc perl_parse
858
859Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
860
861=cut
862*/
863
79072805 864int
0cb96387 865perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 866{
6224f72b 867 I32 oldscope;
6224f72b 868 int ret;
db36c5a1 869 dJMPENV;
cea2e8a9
GS
870#ifdef USE_THREADS
871 dTHX;
872#endif
8d063cd8 873
a687059c
LW
874#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
875#ifdef IAMSUID
876#undef IAMSUID
cea2e8a9 877 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
878setuid perl scripts securely.\n");
879#endif
880#endif
881
8f1f23e8 882#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
883 _dyld_lookup_and_bind
884 ("__environ", (unsigned long *) &environ_pointer, NULL);
885#endif /* environ */
886
3280af22
NIS
887 PL_origargv = argv;
888 PL_origargc = argc;
fa6a1c44 889#ifdef USE_ENVIRON_ARRAY
3280af22 890 PL_origenviron = environ;
a0d0e21e
LW
891#endif
892
3280af22 893 if (PL_do_undump) {
a0d0e21e
LW
894
895 /* Come here if running an undumped a.out. */
896
3280af22
NIS
897 PL_origfilename = savepv(argv[0]);
898 PL_do_undump = FALSE;
a0d0e21e 899 cxstack_ix = -1; /* start label stack again */
748a9306 900 init_ids();
a0d0e21e
LW
901 init_postdump_symbols(argc,argv,env);
902 return 0;
903 }
904
3280af22
NIS
905 if (PL_main_root) {
906 PL_curpad = AvARRAY(PL_comppad);
907 op_free(PL_main_root);
908 PL_main_root = Nullop;
ff0cee69 909 }
3280af22
NIS
910 PL_main_start = Nullop;
911 SvREFCNT_dec(PL_main_cv);
912 PL_main_cv = Nullcv;
79072805 913
3280af22
NIS
914 time(&PL_basetime);
915 oldscope = PL_scopestack_ix;
599cee73 916 PL_dowarn = G_WARN_OFF;
f86702cc 917
14dd3ad8
GS
918#ifdef PERL_FLEXIBLE_EXCEPTIONS
919 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
920#else
921 JMPENV_PUSH(ret);
922#endif
6224f72b 923 switch (ret) {
312caa8e 924 case 0:
14dd3ad8
GS
925#ifndef PERL_FLEXIBLE_EXCEPTIONS
926 parse_body(env,xsinit);
927#endif
7d30b5c4
GS
928 if (PL_checkav)
929 call_list(oldscope, PL_checkav);
14dd3ad8
GS
930 ret = 0;
931 break;
6224f72b
GS
932 case 1:
933 STATUS_ALL_FAILURE;
934 /* FALL THROUGH */
935 case 2:
936 /* my_exit() was called */
3280af22 937 while (PL_scopestack_ix > oldscope)
6224f72b
GS
938 LEAVE;
939 FREETMPS;
3280af22 940 PL_curstash = PL_defstash;
7d30b5c4
GS
941 if (PL_checkav)
942 call_list(oldscope, PL_checkav);
14dd3ad8
GS
943 ret = STATUS_NATIVE_EXPORT;
944 break;
6224f72b 945 case 3:
bf49b057 946 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
947 ret = 1;
948 break;
6224f72b 949 }
14dd3ad8
GS
950 JMPENV_POP;
951 return ret;
952}
953
954#ifdef PERL_FLEXIBLE_EXCEPTIONS
955STATIC void *
956S_vparse_body(pTHX_ va_list args)
957{
958 char **env = va_arg(args, char**);
959 XSINIT_t xsinit = va_arg(args, XSINIT_t);
960
961 return parse_body(env, xsinit);
312caa8e 962}
14dd3ad8 963#endif
312caa8e
CS
964
965STATIC void *
14dd3ad8 966S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 967{
312caa8e
CS
968 int argc = PL_origargc;
969 char **argv = PL_origargv;
312caa8e
CS
970 char *scriptname = NULL;
971 int fdscript = -1;
972 VOL bool dosearch = FALSE;
973 char *validarg = "";
974 AV* comppadlist;
975 register SV *sv;
976 register char *s;
659ca9ea 977 char *popts, *cddir = Nullch;
312caa8e 978
3280af22 979 sv_setpvn(PL_linestr,"",0);
79cb57f6 980 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
981 SAVEFREESV(sv);
982 init_main_stash();
54310121 983
6224f72b
GS
984 for (argc--,argv++; argc > 0; argc--,argv++) {
985 if (argv[0][0] != '-' || !argv[0][1])
986 break;
987#ifdef DOSUID
988 if (*validarg)
989 validarg = " PHOOEY ";
990 else
991 validarg = argv[0];
13281fa4 992#endif
6224f72b
GS
993 s = argv[0]+1;
994 reswitch:
995 switch (*s) {
729a02f2
GS
996 case 'C':
997#ifdef WIN32
c0932edc 998 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
999 /* FALL THROUGH */
1000#endif
1d5472a9
GS
1001#ifndef PERL_STRICT_CR
1002 case '\r':
1003#endif
6224f72b
GS
1004 case ' ':
1005 case '0':
1006 case 'F':
1007 case 'a':
1008 case 'c':
1009 case 'd':
1010 case 'D':
1011 case 'h':
1012 case 'i':
1013 case 'l':
1014 case 'M':
1015 case 'm':
1016 case 'n':
1017 case 'p':
1018 case 's':
1019 case 'u':
1020 case 'U':
1021 case 'v':
599cee73
PM
1022 case 'W':
1023 case 'X':
6224f72b 1024 case 'w':
155aba94 1025 if ((s = moreswitches(s)))
6224f72b
GS
1026 goto reswitch;
1027 break;
33b78306 1028
6224f72b 1029 case 'T':
3280af22 1030 PL_tainting = TRUE;
6224f72b
GS
1031 s++;
1032 goto reswitch;
f86702cc 1033
6224f72b 1034 case 'e':
bf4acbe4
GS
1035#ifdef MACOS_TRADITIONAL
1036 /* ignore -e for Dev:Pseudo argument */
1037 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1038 break;
bf4acbe4 1039#endif
3280af22 1040 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1041 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1042 if (!PL_e_script) {
79cb57f6 1043 PL_e_script = newSVpvn("",0);
0cb96387 1044 filter_add(read_e_script, NULL);
6224f72b
GS
1045 }
1046 if (*++s)
3280af22 1047 sv_catpv(PL_e_script, s);
6224f72b 1048 else if (argv[1]) {
3280af22 1049 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1050 argc--,argv++;
1051 }
1052 else
cea2e8a9 1053 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1054 sv_catpv(PL_e_script, "\n");
6224f72b 1055 break;
afe37c7d 1056
6224f72b
GS
1057 case 'I': /* -I handled both here and in moreswitches() */
1058 forbid_setid("-I");
1059 if (!*++s && (s=argv[1]) != Nullch) {
1060 argc--,argv++;
1061 }
6224f72b 1062 if (s && *s) {
0df16ed7
GS
1063 char *p;
1064 STRLEN len = strlen(s);
1065 p = savepvn(s, len);
9c8a64f0 1066 incpush(p, TRUE, TRUE);
0df16ed7
GS
1067 sv_catpvn(sv, "-I", 2);
1068 sv_catpvn(sv, p, len);
1069 sv_catpvn(sv, " ", 1);
6224f72b 1070 Safefree(p);
0df16ed7
GS
1071 }
1072 else
a67e862a 1073 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1074 break;
1075 case 'P':
1076 forbid_setid("-P");
3280af22 1077 PL_preprocess = TRUE;
6224f72b
GS
1078 s++;
1079 goto reswitch;
1080 case 'S':
1081 forbid_setid("-S");
1082 dosearch = TRUE;
1083 s++;
1084 goto reswitch;
1085 case 'V':
3280af22
NIS
1086 if (!PL_preambleav)
1087 PL_preambleav = newAV();
1088 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1089 if (*++s != ':') {
3280af22 1090 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1091#ifdef VMS
6b88bc9c 1092 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1093#else
3280af22 1094 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1095#endif
3280af22 1096 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1097# ifdef DEBUGGING
3280af22 1098 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1099# endif
6224f72b 1100# ifdef MULTIPLICITY
8f872242 1101 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1102# endif
b363f7ed
GS
1103# ifdef USE_THREADS
1104 sv_catpv(PL_Sv," USE_THREADS");
1105# endif
ac5e8965
JH
1106# ifdef USE_ITHREADS
1107 sv_catpv(PL_Sv," USE_ITHREADS");
1108# endif
10cc9d2a
JH
1109# ifdef USE_64_BIT_INT
1110 sv_catpv(PL_Sv," USE_64_BIT_INT");
1111# endif
1112# ifdef USE_64_BIT_ALL
1113 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1114# endif
1115# ifdef USE_LONG_DOUBLE
1116 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1117# endif
53430762
JH
1118# ifdef USE_LARGE_FILES
1119 sv_catpv(PL_Sv," USE_LARGE_FILES");
1120# endif
ac5e8965
JH
1121# ifdef USE_SOCKS
1122 sv_catpv(PL_Sv," USE_SOCKS");
1123# endif
b363f7ed
GS
1124# ifdef PERL_OBJECT
1125 sv_catpv(PL_Sv," PERL_OBJECT");
1126# endif
1127# ifdef PERL_IMPLICIT_CONTEXT
1128 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1129# endif
1130# ifdef PERL_IMPLICIT_SYS
1131 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1132# endif
3280af22 1133 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1134
6224f72b
GS
1135#if defined(LOCAL_PATCH_COUNT)
1136 if (LOCAL_PATCH_COUNT > 0) {
1137 int i;
3280af22 1138 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1139 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1140 if (PL_localpatches[i])
cea2e8a9 1141 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1142 }
1143 }
1144#endif
cea2e8a9 1145 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1146#ifdef __DATE__
1147# ifdef __TIME__
cea2e8a9 1148 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1149# else
cea2e8a9 1150 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1151# endif
1152#endif
3280af22 1153 sv_catpv(PL_Sv, "; \
6224f72b
GS
1154$\"=\"\\n \"; \
1155@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1156print \" \\%ENV:\\n @env\\n\" if @env; \
1157print \" \\@INC:\\n @INC\\n\";");
1158 }
1159 else {
3280af22
NIS
1160 PL_Sv = newSVpv("config_vars(qw(",0);
1161 sv_catpv(PL_Sv, ++s);
1162 sv_catpv(PL_Sv, "))");
6224f72b
GS
1163 s += strlen(s);
1164 }
3280af22 1165 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1166 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1167 goto reswitch;
1168 case 'x':
3280af22 1169 PL_doextract = TRUE;
6224f72b
GS
1170 s++;
1171 if (*s)
f4c556ac 1172 cddir = s;
6224f72b
GS
1173 break;
1174 case 0:
1175 break;
1176 case '-':
1177 if (!*++s || isSPACE(*s)) {
1178 argc--,argv++;
1179 goto switch_end;
1180 }
1181 /* catch use of gnu style long options */
1182 if (strEQ(s, "version")) {
1183 s = "v";
1184 goto reswitch;
1185 }
1186 if (strEQ(s, "help")) {
1187 s = "h";
1188 goto reswitch;
1189 }
1190 s--;
1191 /* FALL THROUGH */
1192 default:
cea2e8a9 1193 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1194 }
1195 }
6224f72b 1196 switch_end:
54310121 1197
f675dbe5
CB
1198 if (
1199#ifndef SECURE_INTERNAL_GETENV
1200 !PL_tainting &&
1201#endif
659ca9ea 1202 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1203 {
659ca9ea 1204 s = savepv(popts);
74288ac8
GS
1205 while (isSPACE(*s))
1206 s++;
1207 if (*s == '-' && *(s+1) == 'T')
1208 PL_tainting = TRUE;
1209 else {
1210 while (s && *s) {
4ea8f8fb 1211 char *d;
74288ac8
GS
1212 while (isSPACE(*s))
1213 s++;
1214 if (*s == '-') {
1215 s++;
1216 if (isSPACE(*s))
1217 continue;
1218 }
4ea8f8fb 1219 d = s;
74288ac8
GS
1220 if (!*s)
1221 break;
1222 if (!strchr("DIMUdmw", *s))
cea2e8a9 1223 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1224 while (++s && *s) {
1225 if (isSPACE(*s)) {
1226 *s++ = '\0';
1227 break;
1228 }
1229 }
1230 moreswitches(d);
6224f72b 1231 }
6224f72b
GS
1232 }
1233 }
a0d0e21e 1234
6224f72b
GS
1235 if (!scriptname)
1236 scriptname = argv[0];
3280af22 1237 if (PL_e_script) {
6224f72b
GS
1238 argc++,argv--;
1239 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1240 }
1241 else if (scriptname == Nullch) {
1242#ifdef MSDOS
1243 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1244 moreswitches("h");
1245#endif
1246 scriptname = "-";
1247 }
1248
1249 init_perllib();
1250
1251 open_script(scriptname,dosearch,sv,&fdscript);
1252
1253 validate_suid(validarg, scriptname,fdscript);
1254
64ca3a65 1255#ifndef PERL_MICRO
0b5b802d
GS
1256#if defined(SIGCHLD) || defined(SIGCLD)
1257 {
1258#ifndef SIGCHLD
1259# define SIGCHLD SIGCLD
1260#endif
1261 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1262 if (sigstate == SIG_IGN) {
1263 if (ckWARN(WARN_SIGNAL))
1264 Perl_warner(aTHX_ WARN_SIGNAL,
1265 "Can't ignore signal CHLD, forcing to default");
1266 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1267 }
1268 }
1269#endif
64ca3a65 1270#endif
0b5b802d 1271
bf4acbe4
GS
1272#ifdef MACOS_TRADITIONAL
1273 if (PL_doextract || gMacPerl_AlwaysExtract) {
1274#else
f4c556ac 1275 if (PL_doextract) {
bf4acbe4 1276#endif
6224f72b 1277 find_beginning();
f4c556ac
GS
1278 if (cddir && PerlDir_chdir(cddir) < 0)
1279 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1280
1281 }
6224f72b 1282
3280af22
NIS
1283 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1284 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1285 CvUNIQUE_on(PL_compcv);
1286
1287 PL_comppad = newAV();
1288 av_push(PL_comppad, Nullsv);
1289 PL_curpad = AvARRAY(PL_comppad);
1290 PL_comppad_name = newAV();
1291 PL_comppad_name_fill = 0;
1292 PL_min_intro_pending = 0;
1293 PL_padix = 0;
6224f72b 1294#ifdef USE_THREADS
79cb57f6 1295 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1296 PL_curpad[0] = (SV*)newAV();
1297 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1298 CvOWNER(PL_compcv) = 0;
1299 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1300 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1301#endif /* USE_THREADS */
1302
1303 comppadlist = newAV();
1304 AvREAL_off(comppadlist);
3280af22
NIS
1305 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1306 av_store(comppadlist, 1, (SV*)PL_comppad);
1307 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1308
0c4f7ff0 1309 boot_core_PerlIO();
6224f72b 1310 boot_core_UNIVERSAL();
9a34ef1d 1311#ifndef PERL_MICRO
09bef843 1312 boot_core_xsutils();
9a34ef1d 1313#endif
6224f72b
GS
1314
1315 if (xsinit)
0cb96387 1316 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1317#ifndef PERL_MICRO
ed79a026 1318#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1319 init_os_extras();
6224f72b 1320#endif
64ca3a65 1321#endif
6224f72b 1322
29209bc5 1323#ifdef USE_SOCKS
1b9c9cf5
DH
1324# ifdef HAS_SOCKS5_INIT
1325 socks5_init(argv[0]);
1326# else
29209bc5 1327 SOCKSinit(argv[0]);
1b9c9cf5 1328# endif
ac27b0f5 1329#endif
29209bc5 1330
6224f72b
GS
1331 init_predump_symbols();
1332 /* init_postdump_symbols not currently designed to be called */
1333 /* more than once (ENV isn't cleared first, for example) */
1334 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1335 if (!PL_do_undump)
6224f72b
GS
1336 init_postdump_symbols(argc,argv,env);
1337
1338 init_lexer();
1339
1340 /* now parse the script */
1341
1342 SETERRNO(0,SS$_NORMAL);
3280af22 1343 PL_error_count = 0;
bf4acbe4
GS
1344#ifdef MACOS_TRADITIONAL
1345 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1346 if (PL_minus_c)
1347 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1348 else {
1349 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1350 MacPerl_MPWFileName(PL_origfilename));
1351 }
1352 }
1353#else
3280af22
NIS
1354 if (yyparse() || PL_error_count) {
1355 if (PL_minus_c)
cea2e8a9 1356 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1357 else {
cea2e8a9 1358 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1359 PL_origfilename);
6224f72b
GS
1360 }
1361 }
bf4acbe4 1362#endif
57843af0 1363 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1364 PL_curstash = PL_defstash;
1365 PL_preprocess = FALSE;
1366 if (PL_e_script) {
1367 SvREFCNT_dec(PL_e_script);
1368 PL_e_script = Nullsv;
6224f72b
GS
1369 }
1370
1371 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1372 SvREFCNT_dec(PL_rs);
1373 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1374 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1375 if (PL_do_undump)
6224f72b
GS
1376 my_unexec();
1377
57843af0
GS
1378 if (isWARN_ONCE) {
1379 SAVECOPFILE(PL_curcop);
1380 SAVECOPLINE(PL_curcop);
3280af22 1381 gv_check(PL_defstash);
57843af0 1382 }
6224f72b
GS
1383
1384 LEAVE;
1385 FREETMPS;
1386
1387#ifdef MYMALLOC
1388 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1389 dump_mstats("after compilation:");
1390#endif
1391
1392 ENTER;
3280af22 1393 PL_restartop = 0;
312caa8e 1394 return NULL;
6224f72b
GS
1395}
1396
954c1994
GS
1397/*
1398=for apidoc perl_run
1399
1400Tells a Perl interpreter to run. See L<perlembed>.
1401
1402=cut
1403*/
1404
6224f72b 1405int
0cb96387 1406perl_run(pTHXx)
6224f72b 1407{
6224f72b 1408 I32 oldscope;
14dd3ad8 1409 int ret = 0;
db36c5a1 1410 dJMPENV;
cea2e8a9
GS
1411#ifdef USE_THREADS
1412 dTHX;
1413#endif
6224f72b 1414
3280af22 1415 oldscope = PL_scopestack_ix;
6224f72b 1416
14dd3ad8 1417#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1418 redo_body:
14dd3ad8
GS
1419 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1420#else
1421 JMPENV_PUSH(ret);
1422#endif
6224f72b
GS
1423 switch (ret) {
1424 case 1:
1425 cxstack_ix = -1; /* start context stack again */
312caa8e 1426 goto redo_body;
14dd3ad8
GS
1427 case 0: /* normal completion */
1428#ifndef PERL_FLEXIBLE_EXCEPTIONS
1429 redo_body:
1430 run_body(oldscope);
1431#endif
1432 /* FALL THROUGH */
1433 case 2: /* my_exit() */
3280af22 1434 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1435 LEAVE;
1436 FREETMPS;
3280af22 1437 PL_curstash = PL_defstash;
865be832 1438 if (PL_endav && !PL_minus_c)
3280af22 1439 call_list(oldscope, PL_endav);
6224f72b
GS
1440#ifdef MYMALLOC
1441 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1442 dump_mstats("after execution: ");
1443#endif
14dd3ad8
GS
1444 ret = STATUS_NATIVE_EXPORT;
1445 break;
6224f72b 1446 case 3:
312caa8e
CS
1447 if (PL_restartop) {
1448 POPSTACK_TO(PL_mainstack);
1449 goto redo_body;
6224f72b 1450 }
bf49b057 1451 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1452 FREETMPS;
14dd3ad8
GS
1453 ret = 1;
1454 break;
6224f72b
GS
1455 }
1456
14dd3ad8
GS
1457 JMPENV_POP;
1458 return ret;
312caa8e
CS
1459}
1460
14dd3ad8 1461#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1462STATIC void *
14dd3ad8 1463S_vrun_body(pTHX_ va_list args)
312caa8e 1464{
312caa8e
CS
1465 I32 oldscope = va_arg(args, I32);
1466
14dd3ad8
GS
1467 return run_body(oldscope);
1468}
1469#endif
1470
1471
1472STATIC void *
1473S_run_body(pTHX_ I32 oldscope)
1474{
6224f72b 1475 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1476 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1477
3280af22 1478 if (!PL_restartop) {
6224f72b
GS
1479 DEBUG_x(dump_all());
1480 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1481 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1482 PTR2UV(thr)));
6224f72b 1483
3280af22 1484 if (PL_minus_c) {
bf4acbe4
GS
1485#ifdef MACOS_TRADITIONAL
1486 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1487#else
bf49b057 1488 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1489#endif
6224f72b
GS
1490 my_exit(0);
1491 }
3280af22 1492 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1493 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1494 if (PL_initav)
1495 call_list(oldscope, PL_initav);
6224f72b
GS
1496 }
1497
1498 /* do it */
1499
3280af22 1500 if (PL_restartop) {
533c011a 1501 PL_op = PL_restartop;
3280af22 1502 PL_restartop = 0;
cea2e8a9 1503 CALLRUNOPS(aTHX);
6224f72b 1504 }
3280af22
NIS
1505 else if (PL_main_start) {
1506 CvDEPTH(PL_main_cv) = 1;
533c011a 1507 PL_op = PL_main_start;
cea2e8a9 1508 CALLRUNOPS(aTHX);
6224f72b
GS
1509 }
1510
f6b3007c
JH
1511 my_exit(0);
1512 /* NOTREACHED */
312caa8e 1513 return NULL;
6224f72b
GS
1514}
1515
954c1994
GS
1516/*
1517=for apidoc p||get_sv
1518
1519Returns the SV of the specified Perl scalar. If C<create> is set and the
1520Perl variable does not exist then it will be created. If C<create> is not
1521set and the variable does not exist then NULL is returned.
1522
1523=cut
1524*/
1525
6224f72b 1526SV*
864dbfa3 1527Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1528{
1529 GV *gv;
1530#ifdef USE_THREADS
1531 if (name[1] == '\0' && !isALPHA(name[0])) {
1532 PADOFFSET tmp = find_threadsv(name);
411caa50 1533 if (tmp != NOT_IN_PAD)
6224f72b 1534 return THREADSV(tmp);
6224f72b
GS
1535 }
1536#endif /* USE_THREADS */
1537 gv = gv_fetchpv(name, create, SVt_PV);
1538 if (gv)
1539 return GvSV(gv);
1540 return Nullsv;
1541}
1542
954c1994
GS
1543/*
1544=for apidoc p||get_av
1545
1546Returns the AV of the specified Perl array. If C<create> is set and the
1547Perl variable does not exist then it will be created. If C<create> is not
1548set and the variable does not exist then NULL is returned.
1549
1550=cut
1551*/
1552
6224f72b 1553AV*
864dbfa3 1554Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1555{
1556 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1557 if (create)
1558 return GvAVn(gv);
1559 if (gv)
1560 return GvAV(gv);
1561 return Nullav;
1562}
1563
954c1994
GS
1564/*
1565=for apidoc p||get_hv
1566
1567Returns the HV of the specified Perl hash. If C<create> is set and the
1568Perl variable does not exist then it will be created. If C<create> is not
1569set and the variable does not exist then NULL is returned.
1570
1571=cut
1572*/
1573
6224f72b 1574HV*
864dbfa3 1575Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1576{
a0d0e21e
LW
1577 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1578 if (create)
1579 return GvHVn(gv);
1580 if (gv)
1581 return GvHV(gv);
1582 return Nullhv;
1583}
1584
954c1994
GS
1585/*
1586=for apidoc p||get_cv
1587
1588Returns the CV of the specified Perl subroutine. If C<create> is set and
1589the Perl subroutine does not exist then it will be declared (which has the
1590same effect as saying C<sub name;>). If C<create> is not set and the
1591subroutine does not exist then NULL is returned.
1592
1593=cut
1594*/
1595
a0d0e21e 1596CV*
864dbfa3 1597Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1598{
1599 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1600 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1601 /* XXX this is probably not what they think they're getting.
1602 * It has the same effect as "sub name;", i.e. just a forward
1603 * declaration! */
8ebc5c01 1604 if (create && !GvCVu(gv))
774d564b 1605 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1606 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1607 Nullop,
a0d0e21e
LW
1608 Nullop);
1609 if (gv)
8ebc5c01 1610 return GvCVu(gv);
a0d0e21e
LW
1611 return Nullcv;
1612}
1613
79072805
LW
1614/* Be sure to refetch the stack pointer after calling these routines. */
1615
954c1994
GS
1616/*
1617=for apidoc p||call_argv
1618
1619Performs a callback to the specified Perl sub. See L<perlcall>.
1620
1621=cut
1622*/
1623
a0d0e21e 1624I32
864dbfa3 1625Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1626
8ac85365
NIS
1627 /* See G_* flags in cop.h */
1628 /* null terminated arg list */
8990e307 1629{
a0d0e21e 1630 dSP;
8990e307 1631
924508f0 1632 PUSHMARK(SP);
a0d0e21e 1633 if (argv) {
8990e307 1634 while (*argv) {
a0d0e21e 1635 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1636 argv++;
1637 }
a0d0e21e 1638 PUTBACK;
8990e307 1639 }
864dbfa3 1640 return call_pv(sub_name, flags);
8990e307
LW
1641}
1642
954c1994
GS
1643/*
1644=for apidoc p||call_pv
1645
1646Performs a callback to the specified Perl sub. See L<perlcall>.
1647
1648=cut
1649*/
1650
a0d0e21e 1651I32
864dbfa3 1652Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1653 /* name of the subroutine */
1654 /* See G_* flags in cop.h */
a0d0e21e 1655{
864dbfa3 1656 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1657}
1658
954c1994
GS
1659/*
1660=for apidoc p||call_method
1661
1662Performs a callback to the specified Perl method. The blessed object must
1663be on the stack. See L<perlcall>.
1664
1665=cut
1666*/
1667
a0d0e21e 1668I32
864dbfa3 1669Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1670 /* name of the subroutine */
1671 /* See G_* flags in cop.h */
a0d0e21e 1672{
968b3946 1673 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1674}
1675
1676/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1677/*
1678=for apidoc p||call_sv
1679
1680Performs a callback to the Perl sub whose name is in the SV. See
1681L<perlcall>.
1682
1683=cut
1684*/
1685
a0d0e21e 1686I32
864dbfa3 1687Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1688 /* See G_* flags in cop.h */
a0d0e21e 1689{
924508f0 1690 dSP;
a0d0e21e 1691 LOGOP myop; /* fake syntax tree node */
968b3946 1692 UNOP method_op;
aa689395 1693 I32 oldmark;
13689cfe 1694 volatile I32 retval = 0;
a0d0e21e 1695 I32 oldscope;
54310121 1696 bool oldcatch = CATCH_GET;
6224f72b 1697 int ret;
533c011a 1698 OP* oldop = PL_op;
db36c5a1 1699 dJMPENV;
1e422769 1700
a0d0e21e
LW
1701 if (flags & G_DISCARD) {
1702 ENTER;
1703 SAVETMPS;
1704 }
1705
aa689395 1706 Zero(&myop, 1, LOGOP);
54310121 1707 myop.op_next = Nullop;
f51d4af5 1708 if (!(flags & G_NOARGS))
aa689395 1709 myop.op_flags |= OPf_STACKED;
54310121
PP
1710 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1711 (flags & G_ARRAY) ? OPf_WANT_LIST :
1712 OPf_WANT_SCALAR);
462e5cf6 1713 SAVEOP();
533c011a 1714 PL_op = (OP*)&myop;
aa689395 1715
3280af22
NIS
1716 EXTEND(PL_stack_sp, 1);
1717 *++PL_stack_sp = sv;
aa689395 1718 oldmark = TOPMARK;
3280af22 1719 oldscope = PL_scopestack_ix;
a0d0e21e 1720
3280af22 1721 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1722 /* Handle first BEGIN of -d. */
3280af22 1723 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1724 /* Try harder, since this may have been a sighandler, thus
1725 * curstash may be meaningless. */
3280af22 1726 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1727 && !(flags & G_NODEBUG))
533c011a 1728 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1729
968b3946
GS
1730 if (flags & G_METHOD) {
1731 Zero(&method_op, 1, UNOP);
1732 method_op.op_next = PL_op;
1733 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1734 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1735 PL_op = (OP*)&method_op;
968b3946
GS
1736 }
1737
312caa8e 1738 if (!(flags & G_EVAL)) {
0cdb2077 1739 CATCH_SET(TRUE);
14dd3ad8 1740 call_body((OP*)&myop, FALSE);
312caa8e 1741 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1742 CATCH_SET(oldcatch);
312caa8e
CS
1743 }
1744 else {
d78bda3d 1745 myop.op_other = (OP*)&myop;
3280af22 1746 PL_markstack_ptr--;
4633a7c4
LW
1747 /* we're trying to emulate pp_entertry() here */
1748 {
c09156bb 1749 register PERL_CONTEXT *cx;
54310121 1750 I32 gimme = GIMME_V;
ac27b0f5 1751
4633a7c4
LW
1752 ENTER;
1753 SAVETMPS;
ac27b0f5 1754
968b3946 1755 push_return(Nullop);
1d76a5c3 1756 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1757 PUSHEVAL(cx, 0, 0);
533c011a 1758 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1759
faef0170 1760 PL_in_eval = EVAL_INEVAL;
4633a7c4 1761 if (flags & G_KEEPERR)
faef0170 1762 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1763 else
38a03e6e 1764 sv_setpv(ERRSV,"");
4633a7c4 1765 }
3280af22 1766 PL_markstack_ptr++;
a0d0e21e 1767
14dd3ad8
GS
1768#ifdef PERL_FLEXIBLE_EXCEPTIONS
1769 redo_body:
1770 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1771 (OP*)&myop, FALSE);
14dd3ad8
GS
1772#else
1773 JMPENV_PUSH(ret);
1774#endif
6224f72b
GS
1775 switch (ret) {
1776 case 0:
14dd3ad8
GS
1777#ifndef PERL_FLEXIBLE_EXCEPTIONS
1778 redo_body:
1779 call_body((OP*)&myop, FALSE);
1780#endif
312caa8e
CS
1781 retval = PL_stack_sp - (PL_stack_base + oldmark);
1782 if (!(flags & G_KEEPERR))
1783 sv_setpv(ERRSV,"");
a0d0e21e 1784 break;
6224f72b 1785 case 1:
f86702cc 1786 STATUS_ALL_FAILURE;
a0d0e21e 1787 /* FALL THROUGH */
6224f72b 1788 case 2:
a0d0e21e 1789 /* my_exit() was called */
3280af22 1790 PL_curstash = PL_defstash;
a0d0e21e 1791 FREETMPS;
14dd3ad8 1792 JMPENV_POP;
cc3604b1 1793 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1794 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1795 my_exit_jump();
a0d0e21e 1796 /* NOTREACHED */
6224f72b 1797 case 3:
3280af22 1798 if (PL_restartop) {
533c011a 1799 PL_op = PL_restartop;
3280af22 1800 PL_restartop = 0;
312caa8e 1801 goto redo_body;
a0d0e21e 1802 }
3280af22 1803 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1804 if (flags & G_ARRAY)
1805 retval = 0;
1806 else {
1807 retval = 1;
3280af22 1808 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1809 }
312caa8e 1810 break;
a0d0e21e 1811 }
a0d0e21e 1812
3280af22 1813 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1814 SV **newsp;
1815 PMOP *newpm;
1816 I32 gimme;
c09156bb 1817 register PERL_CONTEXT *cx;
a0a2876f
LW
1818 I32 optype;
1819
1820 POPBLOCK(cx,newpm);
1821 POPEVAL(cx);
1822 pop_return();
3280af22 1823 PL_curpm = newpm;
a0a2876f 1824 LEAVE;
a0d0e21e 1825 }
14dd3ad8 1826 JMPENV_POP;
a0d0e21e 1827 }
1e422769 1828
a0d0e21e 1829 if (flags & G_DISCARD) {
3280af22 1830 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1831 retval = 0;
1832 FREETMPS;
1833 LEAVE;
1834 }
533c011a 1835 PL_op = oldop;
a0d0e21e
LW
1836 return retval;
1837}
1838
14dd3ad8 1839#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1840STATIC void *
14dd3ad8 1841S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1842{
1843 OP *myop = va_arg(args, OP*);
1844 int is_eval = va_arg(args, int);
1845
14dd3ad8 1846 call_body(myop, is_eval);
312caa8e
CS
1847 return NULL;
1848}
14dd3ad8 1849#endif
312caa8e
CS
1850
1851STATIC void
14dd3ad8 1852S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1853{
312caa8e
CS
1854 if (PL_op == myop) {
1855 if (is_eval)
f807eda9 1856 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1857 else
f807eda9 1858 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1859 }
1860 if (PL_op)
cea2e8a9 1861 CALLRUNOPS(aTHX);
312caa8e
CS
1862}
1863
6e72f9df 1864/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1865
954c1994
GS
1866/*
1867=for apidoc p||eval_sv
1868
1869Tells Perl to C<eval> the string in the SV.
1870
1871=cut
1872*/
1873
a0d0e21e 1874I32
864dbfa3 1875Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1876
8ac85365 1877 /* See G_* flags in cop.h */
a0d0e21e 1878{
924508f0 1879 dSP;
a0d0e21e 1880 UNOP myop; /* fake syntax tree node */
8fa7f367 1881 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1882 volatile I32 retval = 0;
4633a7c4 1883 I32 oldscope;
6224f72b 1884 int ret;
533c011a 1885 OP* oldop = PL_op;
db36c5a1 1886 dJMPENV;
84902520 1887
4633a7c4
LW
1888 if (flags & G_DISCARD) {
1889 ENTER;
1890 SAVETMPS;
1891 }
1892
462e5cf6 1893 SAVEOP();
533c011a
NIS
1894 PL_op = (OP*)&myop;
1895 Zero(PL_op, 1, UNOP);
3280af22
NIS
1896 EXTEND(PL_stack_sp, 1);
1897 *++PL_stack_sp = sv;
1898 oldscope = PL_scopestack_ix;
79072805 1899
4633a7c4
LW
1900 if (!(flags & G_NOARGS))
1901 myop.op_flags = OPf_STACKED;
79072805 1902 myop.op_next = Nullop;
6e72f9df 1903 myop.op_type = OP_ENTEREVAL;
54310121
PP
1904 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1905 (flags & G_ARRAY) ? OPf_WANT_LIST :
1906 OPf_WANT_SCALAR);
6e72f9df
PP
1907 if (flags & G_KEEPERR)
1908 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1909
14dd3ad8 1910#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1911 redo_body:
14dd3ad8 1912 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1913 (OP*)&myop, TRUE);
14dd3ad8
GS
1914#else
1915 JMPENV_PUSH(ret);
1916#endif
6224f72b
GS
1917 switch (ret) {
1918 case 0:
14dd3ad8
GS
1919#ifndef PERL_FLEXIBLE_EXCEPTIONS
1920 redo_body:
1921 call_body((OP*)&myop,TRUE);
1922#endif
312caa8e
CS
1923 retval = PL_stack_sp - (PL_stack_base + oldmark);
1924 if (!(flags & G_KEEPERR))
1925 sv_setpv(ERRSV,"");
4633a7c4 1926 break;
6224f72b 1927 case 1:
f86702cc 1928 STATUS_ALL_FAILURE;
4633a7c4 1929 /* FALL THROUGH */
6224f72b 1930 case 2:
4633a7c4 1931 /* my_exit() was called */
3280af22 1932 PL_curstash = PL_defstash;
4633a7c4 1933 FREETMPS;
14dd3ad8 1934 JMPENV_POP;
cc3604b1 1935 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1936 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1937 my_exit_jump();
4633a7c4 1938 /* NOTREACHED */
6224f72b 1939 case 3:
3280af22 1940 if (PL_restartop) {
533c011a 1941 PL_op = PL_restartop;
3280af22 1942 PL_restartop = 0;
312caa8e 1943 goto redo_body;
4633a7c4 1944 }
3280af22 1945 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1946 if (flags & G_ARRAY)
1947 retval = 0;
1948 else {
1949 retval = 1;
3280af22 1950 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1951 }
312caa8e 1952 break;
4633a7c4
LW
1953 }
1954
14dd3ad8 1955 JMPENV_POP;
4633a7c4 1956 if (flags & G_DISCARD) {
3280af22 1957 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1958 retval = 0;
1959 FREETMPS;
1960 LEAVE;
1961 }
533c011a 1962 PL_op = oldop;
4633a7c4
LW
1963 return retval;
1964}
1965
954c1994
GS
1966/*
1967=for apidoc p||eval_pv
1968
1969Tells Perl to C<eval> the given string and return an SV* result.
1970
1971=cut
1972*/
1973
137443ea 1974SV*
864dbfa3 1975Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
1976{
1977 dSP;
1978 SV* sv = newSVpv(p, 0);
1979
864dbfa3 1980 eval_sv(sv, G_SCALAR);
137443ea
PP
1981 SvREFCNT_dec(sv);
1982
1983 SPAGAIN;
1984 sv = POPs;
1985 PUTBACK;
1986
2d8e6c8d
GS
1987 if (croak_on_error && SvTRUE(ERRSV)) {
1988 STRLEN n_a;
cea2e8a9 1989 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1990 }
137443ea
PP
1991
1992 return sv;
1993}
1994
4633a7c4
LW
1995/* Require a module. */
1996
954c1994
GS
1997/*
1998=for apidoc p||require_pv
1999
7d3fb230
BS
2000Tells Perl to C<require> the file named by the string argument. It is
2001analogous to the Perl code C<eval "require '$file'">. It's even
2002implemented that way; consider using Perl_load_module instead.
954c1994 2003
7d3fb230 2004=cut */
954c1994 2005
4633a7c4 2006void
864dbfa3 2007Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2008{
d3acc0f7
JP
2009 SV* sv;
2010 dSP;
e788e7d3 2011 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2012 PUTBACK;
2013 sv = sv_newmortal();
4633a7c4
LW
2014 sv_setpv(sv, "require '");
2015 sv_catpv(sv, pv);
2016 sv_catpv(sv, "'");
864dbfa3 2017 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2018 SPAGAIN;
2019 POPSTACK;
79072805
LW
2020}
2021
79072805 2022void
864dbfa3 2023Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2024{
2025 register GV *gv;
2026
155aba94 2027 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2028 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2029}
2030
76e3520e 2031STATIC void
cea2e8a9 2032S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2033{
ab821d7f
PP
2034 /* This message really ought to be max 23 lines.
2035 * Removed -h because the user already knows that opton. Others? */
fb73857a 2036
76e3520e 2037 static char *usage_msg[] = {
fb73857a
PP
2038"-0[octal] specify record separator (\\0, if no argument)",
2039"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2040"-C enable native wide character system interfaces",
1950ee41 2041"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2042"-d[:debugger] run program under debugger",
2043"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2044"-e 'command' one line of program (several -e's allowed, omit programfile)",
2045"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2046"-i[extension] edit <> files in place (makes backup if extension supplied)",
2047"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2048"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2049"-[mM][-]module execute `use/no module...' before executing program",
2050"-n assume 'while (<>) { ... }' loop around program",
2051"-p assume loop like -n but print line also, like sed",
2052"-P run program through C preprocessor before compilation",
2053"-s enable rudimentary parsing for switches after programfile",
2054"-S look for programfile using PATH environment variable",
2055"-T enable tainting checks",
2056"-u dump core after parsing program",
fb73857a 2057"-U allow unsafe operations",
aac3bd0d
GS
2058"-v print version, subversion (includes VERY IMPORTANT perl info)",
2059"-V[:variable] print configuration summary (or a single Config.pm variable)",
2060"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2061"-W enable all warnings",
2062"-X disable all warnings",
fb73857a
PP
2063"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2064"\n",
2065NULL
2066};
76e3520e 2067 char **p = usage_msg;
fb73857a 2068
b0e47665
GS
2069 PerlIO_printf(PerlIO_stdout(),
2070 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2071 name);
fb73857a 2072 while (*p)
b0e47665 2073 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2074}
2075
79072805
LW
2076/* This routine handles any switches that can be given during run */
2077
2078char *
864dbfa3 2079Perl_moreswitches(pTHX_ char *s)
79072805 2080{
ba210ebe 2081 STRLEN numlen;
c07a80fd 2082 U32 rschar;
79072805
LW
2083
2084 switch (*s) {
2085 case '0':
a863c7d1 2086 {
b21ed0a9 2087 numlen = 0; /* disallow underscores */
dff6d3cd 2088 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2089 SvREFCNT_dec(PL_nrs);
c07a80fd 2090 if (rschar & ~((U8)~0))
3280af22 2091 PL_nrs = &PL_sv_undef;
c07a80fd 2092 else if (!rschar && numlen >= 2)
79cb57f6 2093 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2094 else {
2095 char ch = rschar;
79cb57f6 2096 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2097 }
2098 return s + numlen;
a863c7d1 2099 }
46487f74
GS
2100 case 'C':
2101 PL_widesyscalls = TRUE;
2102 s++;
2103 return s;
2304df62 2104 case 'F':
3280af22
NIS
2105 PL_minus_F = TRUE;
2106 PL_splitstr = savepv(s + 1);
2304df62
AD
2107 s += strlen(s);
2108 return s;
79072805 2109 case 'a':
3280af22 2110 PL_minus_a = TRUE;
79072805
LW
2111 s++;
2112 return s;
2113 case 'c':
3280af22 2114 PL_minus_c = TRUE;
79072805
LW
2115 s++;
2116 return s;
2117 case 'd':
bbce6d69 2118 forbid_setid("-d");
4633a7c4 2119 s++;
70c94a19
RR
2120 /* The following permits -d:Mod to accepts arguments following an =
2121 in the fashion that -MSome::Mod does. */
2122 if (*s == ':' || *s == '=') {
2123 char *start;
2124 SV *sv;
2125 sv = newSVpv("use Devel::", 0);
2126 start = ++s;
2127 /* We now allow -d:Module=Foo,Bar */
2128 while(isALNUM(*s) || *s==':') ++s;
2129 if (*s != '=')
2130 sv_catpv(sv, start);
2131 else {
2132 sv_catpvn(sv, start, s-start);
2133 sv_catpv(sv, " split(/,/,q{");
2134 sv_catpv(sv, ++s);
2135 sv_catpv(sv, "})");
2136 }
4633a7c4 2137 s += strlen(s);
70c94a19 2138 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2139 }
ed094faf 2140 if (!PL_perldb) {
3280af22 2141 PL_perldb = PERLDB_ALL;
a0d0e21e 2142 init_debugger();
ed094faf 2143 }
79072805
LW
2144 return s;
2145 case 'D':
0453d815 2146 {
79072805 2147#ifdef DEBUGGING
bbce6d69 2148 forbid_setid("-D");
79072805 2149 if (isALPHA(s[1])) {
04932ac8
DM
2150 /* if adding extra options, remember to update DEBUG_MASK */
2151 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2152 char *d;
2153
93a17b20 2154 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2155 PL_debug |= 1 << (d - debopts);
79072805
LW
2156 }
2157 else {
3280af22 2158 PL_debug = atoi(s+1);
79072805
LW
2159 for (s++; isDIGIT(*s); s++) ;
2160 }
aea4f609 2161 PL_debug |= DEBUG_TOP_FLAG;
79072805 2162#else
0453d815
PM
2163 if (ckWARN_d(WARN_DEBUGGING))
2164 Perl_warner(aTHX_ WARN_DEBUGGING,
2165 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2166 for (s++; isALNUM(*s); s++) ;
79072805
LW
2167#endif
2168 /*SUPPRESS 530*/
2169 return s;
0453d815 2170 }
4633a7c4 2171 case 'h':
ac27b0f5 2172 usage(PL_origargv[0]);
6ad3d225 2173 PerlProc_exit(0);
79072805 2174 case 'i':
3280af22
NIS
2175 if (PL_inplace)
2176 Safefree(PL_inplace);
2177 PL_inplace = savepv(s+1);
79072805 2178 /*SUPPRESS 530*/
3280af22 2179 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2180 if (*s) {
fb73857a 2181 *s++ = '\0';
7b8d334a
GS
2182 if (*s == '-') /* Additional switches on #! line. */
2183 s++;
2184 }
fb73857a
PP
2185 return s;
2186 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2187 forbid_setid("-I");
fb73857a
PP
2188 ++s;
2189 while (*s && isSPACE(*s))
2190 ++s;
2191 if (*s) {
774d564b 2192 char *e, *p;
0df16ed7
GS
2193 p = s;
2194 /* ignore trailing spaces (possibly followed by other switches) */
2195 do {
2196 for (e = p; *e && !isSPACE(*e); e++) ;
2197 p = e;
2198 while (isSPACE(*p))
2199 p++;
2200 } while (*p && *p != '-');
2201 e = savepvn(s, e-s);
9c8a64f0 2202 incpush(e, TRUE, TRUE);
0df16ed7
GS
2203 Safefree(e);
2204 s = p;
2205 if (*s == '-')
2206 s++;
79072805
LW
2207 }
2208 else
a67e862a 2209 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2210 return s;
79072805 2211 case 'l':
3280af22 2212 PL_minus_l = TRUE;
79072805 2213 s++;
7889fe52
NIS
2214 if (PL_ors_sv) {
2215 SvREFCNT_dec(PL_ors_sv);
2216 PL_ors_sv = Nullsv;
2217 }
79072805 2218 if (isDIGIT(*s)) {
7889fe52 2219 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2220 numlen = 0; /* disallow underscores */
7889fe52 2221 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2222 s += numlen;
2223 }
2224 else {
3280af22 2225 if (RsPARA(PL_nrs)) {
7889fe52
NIS
2226 PL_ors_sv = newSVpvn("\n\n",2);
2227 }
2228 else {
2229 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2230 }
79072805
LW
2231 }
2232 return s;
1a30305b 2233 case 'M':
bbce6d69 2234 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2235 /* FALL THROUGH */
2236 case 'm':
bbce6d69 2237 forbid_setid("-m"); /* XXX ? */
1a30305b 2238 if (*++s) {
a5f75d66 2239 char *start;
11343788 2240 SV *sv;
a5f75d66
AD
2241 char *use = "use ";
2242 /* -M-foo == 'no foo' */
2243 if (*s == '-') { use = "no "; ++s; }
11343788 2244 sv = newSVpv(use,0);
a5f75d66 2245 start = s;
1a30305b 2246 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2247 while(isALNUM(*s) || *s==':') ++s;
2248 if (*s != '=') {
11343788 2249 sv_catpv(sv, start);
c07a80fd
PP
2250 if (*(start-1) == 'm') {
2251 if (*s != '\0')
cea2e8a9 2252 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2253 sv_catpv( sv, " ()");
c07a80fd
PP
2254 }
2255 } else {
6df41af2 2256 if (s == start)
be98fb35
GS
2257 Perl_croak(aTHX_ "Module name required with -%c option",
2258 s[-1]);
11343788
MB
2259 sv_catpvn(sv, start, s-start);
2260 sv_catpv(sv, " split(/,/,q{");
2261 sv_catpv(sv, ++s);
2262 sv_catpv(sv, "})");
c07a80fd 2263 }
1a30305b 2264 s += strlen(s);
5c831c24 2265 if (!PL_preambleav)
3280af22
NIS
2266 PL_preambleav = newAV();
2267 av_push(PL_preambleav, sv);
1a30305b
PP
2268 }
2269 else
cea2e8a9 2270 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2271 return s;
79072805 2272 case 'n':
3280af22 2273 PL_minus_n = TRUE;
79072805
LW
2274 s++;
2275 return s;
2276 case 'p':
3280af22 2277 PL_minus_p = TRUE;
79072805
LW
2278 s++;
2279 return s;
2280 case 's':
bbce6d69 2281 forbid_setid("-s");
3280af22 2282 PL_doswitches = TRUE;
79072805
LW
2283 s++;
2284 return s;
463ee0b2 2285 case 'T':
3280af22 2286 if (!PL_tainting)
cea2e8a9 2287 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2288 s++;
2289 return s;
79072805 2290 case 'u':
bf4acbe4
GS
2291#ifdef MACOS_TRADITIONAL
2292 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2293#endif
3280af22 2294 PL_do_undump = TRUE;
79072805
LW
2295 s++;
2296 return s;
2297 case 'U':
3280af22 2298 PL_unsafe = TRUE;
79072805
LW
2299 s++;
2300 return s;
2301 case 'v':
8e9464f1 2302#if !defined(DGUX)
b0e47665 2303 PerlIO_printf(PerlIO_stdout(),
d2560b70 2304 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2305 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2306#else /* DGUX */
2307/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2308 PerlIO_printf(PerlIO_stdout(),
2309 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2310 PerlIO_printf(PerlIO_stdout(),
2311 Perl_form(aTHX_ " built under %s at %s %s\n",
2312 OSNAME, __DATE__, __TIME__));
2313 PerlIO_printf(PerlIO_stdout(),
2314 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2315 OSVERS));
8e9464f1
JH
2316#endif /* !DGUX */
2317
fb73857a
PP
2318#if defined(LOCAL_PATCH_COUNT)
2319 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2320 PerlIO_printf(PerlIO_stdout(),
2321 "\n(with %d registered patch%s, "
2322 "see perl -V for more detail)",
2323 (int)LOCAL_PATCH_COUNT,
2324 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2325#endif
1a30305b 2326
b0e47665 2327 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2328 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2329#ifdef MACOS_TRADITIONAL
2330 PerlIO_printf(PerlIO_stdout(),
084592ab 2331 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2332#endif
79072805 2333#ifdef MSDOS
b0e47665
GS
2334 PerlIO_printf(PerlIO_stdout(),
2335 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2336#endif
2337#ifdef DJGPP
b0e47665
GS
2338 PerlIO_printf(PerlIO_stdout(),
2339 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2340 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2341#endif
79072805 2342#ifdef OS2
b0e47665
GS
2343 PerlIO_printf(PerlIO_stdout(),
2344 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2345 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2346#endif
79072805 2347#ifdef atarist
b0e47665
GS
2348 PerlIO_printf(PerlIO_stdout(),
2349 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2350#endif
a3f9223b 2351#ifdef __BEOS__
b0e47665
GS
2352 PerlIO_printf(PerlIO_stdout(),
2353 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2354#endif
1d84e8df 2355#ifdef MPE
b0e47665 2356 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2357 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2358#endif
9d116dd7 2359#ifdef OEMVS
b0e47665
GS
2360 PerlIO_printf(PerlIO_stdout(),
2361 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2362#endif
495c5fdc 2363#ifdef __VOS__
b0e47665
GS
2364 PerlIO_printf(PerlIO_stdout(),
2365 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2366#endif
092bebab 2367#ifdef __OPEN_VM
b0e47665
GS
2368 PerlIO_printf(PerlIO_stdout(),
2369 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2370#endif
a1a0e61e 2371#ifdef POSIX_BC
b0e47665
GS
2372 PerlIO_printf(PerlIO_stdout(),
2373 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2374#endif
61ae2fbf 2375#ifdef __MINT__
b0e47665
GS
2376 PerlIO_printf(PerlIO_stdout(),
2377 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2378#endif
f83d2536 2379#ifdef EPOC
b0e47665
GS
2380 PerlIO_printf(PerlIO_stdout(),
2381 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2382#endif
baed7233
DL
2383#ifdef BINARY_BUILD_NOTICE
2384 BINARY_BUILD_NOTICE;
2385#endif
b0e47665
GS
2386 PerlIO_printf(PerlIO_stdout(),
2387 "\n\
79072805 2388Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2389GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2390Complete documentation for Perl, including FAQ lists, should be found on\n\
2391this system using `man perl' or `perldoc perl'. If you have access to the\n\
2392Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2393 PerlProc_exit(0);
79072805 2394 case 'w':
599cee73 2395 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2396 PL_dowarn |= G_WARN_ON;
599cee73
PM
2397 s++;
2398 return s;
2399 case 'W':
ac27b0f5 2400 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2401 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2402 s++;
2403 return s;
2404 case 'X':
ac27b0f5 2405 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2406 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2407 s++;
2408 return s;
a0d0e21e 2409 case '*':
79072805
LW
2410 case ' ':
2411 if (s[1] == '-') /* Additional switches on #! line. */
2412 return s+2;
2413 break;
a0d0e21e 2414 case '-':
79072805 2415 case 0:
51882d45 2416#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2417 case '\r':
2418#endif
79072805
LW
2419 case '\n':
2420 case '\t':
2421 break;
aa689395
PP
2422#ifdef ALTERNATE_SHEBANG
2423 case 'S': /* OS/2 needs -S on "extproc" line. */
2424 break;
2425#endif
a0d0e21e 2426 case 'P':
3280af22 2427 if (PL_preprocess)
a0d0e21e
LW
2428 return s+1;
2429 /* FALL THROUGH */
79072805 2430 default:
cea2e8a9 2431 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2432 }
2433 return Nullch;
2434}
2435
2436/* compliments of Tom Christiansen */
2437
2438/* unexec() can be found in the Gnu emacs distribution */
ee580363 2439/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2440
2441void
864dbfa3 2442Perl_my_unexec(pTHX)
79072805
LW
2443{
2444#ifdef UNEXEC
46fc3d4c
PP
2445 SV* prog;
2446 SV* file;
ee580363 2447 int status = 1;
79072805
LW
2448 extern int etext;
2449
ee580363 2450 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2451 sv_catpv(prog, "/perl");
6b88bc9c 2452 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2453 sv_catpv(file, ".perldump");
79072805 2454
ee580363
GS
2455 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2456 /* unexec prints msg to stderr in case of failure */
6ad3d225 2457 PerlProc_exit(status);
79072805 2458#else
a5f75d66
AD
2459# ifdef VMS
2460# include <lib$routines.h>
2461 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2462# else
79072805 2463 ABORT(); /* for use with undump */
aa689395 2464# endif
a5f75d66 2465#endif
79072805
LW
2466}
2467
cb68f92d
GS
2468/* initialize curinterp */
2469STATIC void
cea2e8a9 2470S_init_interp(pTHX)
cb68f92d
GS
2471{
2472
066ef5b5 2473#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2474#define I_REINIT \
6b88bc9c
GS
2475 STMT_START { \
2476 PL_chopset = " \n-"; \
2477 PL_copline = NOLINE; \
2478 PL_curcop = &PL_compiling;\
2479 PL_curcopdb = NULL; \
2480 PL_dbargs = 0; \
3967c732 2481 PL_dumpindent = 4; \
6b88bc9c
GS
2482 PL_laststatval = -1; \
2483 PL_laststype = OP_STAT; \
2484 PL_maxscream = -1; \
2485 PL_maxsysfd = MAXSYSFD; \
2486 PL_statname = Nullsv; \
2487 PL_tmps_floor = -1; \
2488 PL_tmps_ix = -1; \
2489 PL_op_mask = NULL; \
6b88bc9c
GS
2490 PL_laststatval = -1; \
2491 PL_laststype = OP_STAT; \
2492 PL_mess_sv = Nullsv; \
2493 PL_splitstr = " "; \
2494 PL_generation = 100; \
2495 PL_exitlist = NULL; \
2496 PL_exitlistlen = 0; \
2497 PL_regindent = 0; \
2498 PL_in_clean_objs = FALSE; \
2499 PL_in_clean_all = FALSE; \
2500 PL_profiledata = NULL; \
2501 PL_rsfp = Nullfp; \
2502 PL_rsfp_filters = Nullav; \
24d3c518 2503 PL_dirty = FALSE; \
cb68f92d 2504 } STMT_END
9666903d 2505 I_REINIT;
066ef5b5
GS
2506#else
2507# ifdef MULTIPLICITY
2508# define PERLVAR(var,type)
51371543 2509# define PERLVARA(var,n,type)
cea2e8a9 2510# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2511# if defined(USE_THREADS)
2512# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2513# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2514# else /* !USE_THREADS */
2515# define PERLVARI(var,type,init) aTHX->var = init;
2516# define PERLVARIC(var,type,init) aTHX->var = init;
2517# endif /* USE_THREADS */
cea2e8a9 2518# else
c5be433b
GS
2519# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2520# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2521# endif
066ef5b5
GS
2522# include "intrpvar.h"
2523# ifndef USE_THREADS
2524# include "thrdvar.h"
2525# endif
2526# undef PERLVAR
51371543 2527# undef PERLVARA
066ef5b5
GS
2528# undef PERLVARI
2529# undef PERLVARIC
3967c732 2530# else
066ef5b5 2531# define PERLVAR(var,type)
51371543 2532# define PERLVARA(var,n,type)
533c011a
NIS
2533# define PERLVARI(var,type,init) PL_##var = init;
2534# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2535# include "intrpvar.h"
2536# ifndef USE_THREADS
2537# include "thrdvar.h"
2538# endif
2539# undef PERLVAR
51371543 2540# undef PERLVARA
066ef5b5
GS
2541# undef PERLVARI
2542# undef PERLVARIC
2543# endif
cb68f92d
GS
2544#endif
2545
cb68f92d
GS
2546}
2547
76e3520e 2548STATIC void
cea2e8a9 2549S_init_main_stash(pTHX)
79072805 2550{
463ee0b2 2551 GV *gv;
6e72f9df
PP
2552
2553 /* Note that strtab is a rather special HV. Assumptions are made
2554 about not iterating on it, and not adding tie magic to it.
2555 It is properly deallocated in perl_destruct() */
3280af22 2556 PL_strtab = newHV();
5f08fbcd
GS
2557#ifdef USE_THREADS
2558 MUTEX_INIT(&PL_strtab_mutex);
2559#endif
3280af22
NIS
2560 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2561 hv_ksplit(PL_strtab, 512);
ac27b0f5 2562
3280af22 2563 PL_curstash = PL_defstash = newHV();
79cb57f6 2564 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2565 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2566 SvREFCNT_dec(GvHV(gv));
3280af22 2567 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2568 SvREADONLY_on(gv);
3280af22
NIS
2569 HvNAME(PL_defstash) = savepv("main");
2570 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2571 GvMULTI_on(PL_incgv);
2572 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2573 GvMULTI_on(PL_hintgv);
2574 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2575 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2576 GvMULTI_on(PL_errgv);
2577 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2578 GvMULTI_on(PL_replgv);
cea2e8a9 2579 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2580 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2581 sv_setpvn(ERRSV, "", 0);
3280af22 2582 PL_curstash = PL_defstash;
11faa288 2583 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2584 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2585 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2586 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2587 /* We must init $/ before switches are processed. */
864dbfa3 2588 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2589}
2590
76e3520e 2591STATIC void
cea2e8a9 2592S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2593{
6c4ab083 2594 *fdscript = -1;
79072805 2595
3280af22
NIS
2596 if (PL_e_script) {
2597 PL_origfilename = savepv("-e");
96436eeb 2598 }
6c4ab083
GS
2599 else {
2600 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2601 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2602
2603 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2604 char *s = scriptname + 8;
2605 *fdscript = atoi(s);
2606 while (isDIGIT(*s))
2607 s++;
2608 if (*s) {
2609 scriptname = savepv(s + 1);
3280af22
NIS
2610 Safefree(PL_origfilename);
2611 PL_origfilename = scriptname;
6c4ab083
GS
2612 }
2613 }
2614 }
2615
f4dd75d9
GS
2616#ifdef USE_ITHREADS
2617 Safefree(CopFILE(PL_curcop));
2618#else
2619 SvREFCNT_dec(CopFILEGV(PL_curcop));
2620#endif
57843af0 2621 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2622 if (strEQ(PL_origfilename,"-"))
79072805 2623 scriptname = "";
01f988be 2624 if (*fdscript >= 0) {
3280af22 2625 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2626#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2627 if (PL_rsfp)
2628 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2629#endif
2630 }
3280af22 2631 else if (PL_preprocess) {
46fc3d4c 2632 char *cpp_cfg = CPPSTDIN;
79cb57f6 2633 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2634 SV *cmd = NEWSV(0,0);
2635
2636 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2637 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2638 sv_catpv(cpp, cpp_cfg);
79072805 2639
0df16ed7 2640 sv_catpvn(sv, "-I", 2);
fed7345c 2641 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2642
14953ddc
MB
2643 DEBUG_P(PerlIO_printf(Perl_debug_log,
2644 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2645 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2646#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2647 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2648sed %s -e \"/^[^#]/b\" \
2649 -e \"/^#[ ]*include[ ]/b\" \
2650 -e \"/^#[ ]*define[ ]/b\" \
2651 -e \"/^#[ ]*if[ ]/b\" \
2652 -e \"/^#[ ]*ifdef[ ]/b\" \
2653 -e \"/^#[ ]*ifndef[ ]/b\" \
2654 -e \"/^#[ ]*else/b\" \
2655 -e \"/^#[ ]*elif[ ]/b\" \
2656 -e \"/^#[ ]*undef[ ]/b\" \
2657 -e \"/^#[ ]*endif/b\" \
2658 -e \"s/^#.*//\" \
894356b3 2659 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2660 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2661#else
092bebab 2662# ifdef __OPEN_VM
cea2e8a9 2663 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2664%s %s -e '/^[^#]/b' \
2665 -e '/^#[ ]*include[ ]/b' \
2666 -e '/^#[ ]*define[ ]/b' \
2667 -e '/^#[ ]*if[ ]/b' \
2668 -e '/^#[ ]*ifdef[ ]/b' \
2669 -e '/^#[ ]*ifndef[ ]/b' \
2670 -e '/^#[ ]*else/b' \
2671 -e '/^#[ ]*elif[ ]/b' \
2672 -e '/^#[ ]*undef[ ]/b' \
2673 -e '/^#[ ]*endif/b' \
2674 -e 's/^[ ]*#.*//' \
894356b3 2675 %s | %"SVf" %"SVf" %s",
092bebab 2676# else
cea2e8a9 2677 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2678%s %s -e '/^[^#]/b' \
2679 -e '/^#[ ]*include[ ]/b' \
2680 -e '/^#[ ]*define[ ]/b' \
2681 -e '/^#[ ]*if[ ]/b' \
2682 -e '/^#[ ]*ifdef[ ]/b' \
2683 -e '/^#[ ]*ifndef[ ]/b' \
2684 -e '/^#[ ]*else/b' \
2685 -e '/^#[ ]*elif[ ]/b' \
2686 -e '/^#[ ]*undef[ ]/b' \
2687 -e '/^#[ ]*endif/b' \
2688 -e 's/^[ ]*#.*//' \
894356b3 2689 %s | %"SVf" -C %"SVf" %s",
092bebab 2690# endif
79072805
LW
2691#ifdef LOC_SED
2692 LOC_SED,
2693#else
2694 "sed",
2695#endif
3280af22 2696 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2697#endif
46fc3d4c 2698 scriptname, cpp, sv, CPPMINUS);
3280af22 2699 PL_doextract = FALSE;
79072805 2700#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2701 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2702#ifdef HAS_SETEUID
b28d0864 2703 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2704#else
2705#ifdef HAS_SETREUID
b28d0864 2706 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2707#else
2708#ifdef HAS_SETRESUID
b28d0864 2709 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2710#else
b28d0864 2711 PerlProc_setuid(PL_uid);
79072805
LW
2712#endif
2713#endif
85e6fe83 2714#endif
b28d0864 2715 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2716 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2717 }
2718#endif /* IAMSUID */
3280af22 2719 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2720 SvREFCNT_dec(cmd);
2721 SvREFCNT_dec(cpp);
79072805
LW
2722 }
2723 else if (!*scriptname) {
bbce6d69 2724 forbid_setid("program input from stdin");
3280af22 2725 PL_rsfp = PerlIO_stdin();
79072805 2726 }
96436eeb 2727 else {
3280af22 2728 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2729#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2730 if (PL_rsfp)
2731 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2732#endif
2733 }
3280af22 2734 if (!PL_rsfp) {
13281fa4 2735#ifdef DOSUID
a687059c 2736#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2737 if (PL_euid &&
cc49e20b 2738 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2739 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2740 {
46fc3d4c 2741 /* try again */
a7cb1f99 2742 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2743 (int)PERL_REVISION, (int)PERL_VERSION,
2744 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2745 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2746 }
2747#endif
2748#endif
584d69ec
JH
2749#ifdef IAMSUID
2750 errno = EPERM;
2751 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2752 Strerror(errno));
2753#else
cea2e8a9 2754 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2755 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2756#endif
13281fa4 2757 }
79072805 2758}
8d063cd8 2759
7b89560d
JH
2760/* Mention
2761 * I_SYSSTATVFS HAS_FSTATVFS
2762 * I_SYSMOUNT
c890dc6c 2763 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2764 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2765 * here so that metaconfig picks them up. */
2766
104d25b7 2767#ifdef IAMSUID
864dbfa3 2768STATIC int
e688b231 2769S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2770{
0545a864
JH
2771 int check_okay = 0; /* able to do all the required sys/libcalls */
2772 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2773/*
ad27e871 2774 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2775 * fstatvfs() is UNIX98.
0545a864 2776 * fstatfs() is 4.3 BSD.
ad27e871 2777 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2778 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2779 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2780 */
2781
6439433f
JH
2782#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2783
2784# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2785 defined(HAS_FSTATVFS)
2786# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2787 struct statvfs stfs;
6439433f 2788
104d25b7
JH
2789 check_okay = fstatvfs(fd, &stfs) == 0;
2790 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2791# endif /* fstatvfs */
ac27b0f5 2792
6439433f
JH
2793# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2794 defined(PERL_MOUNT_NOSUID) && \
2795 defined(HAS_FSTATFS) && \
2796 defined(HAS_STRUCT_STATFS) && \
2797 defined(HAS_STRUCT_STATFS_F_FLAGS)
2798# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2799 struct statfs stfs;
6439433f 2800
104d25b7 2801 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2802 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2803# endif /* fstatfs */
2804
2805# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2806 defined(PERL_MOUNT_NOSUID) && \
2807 defined(HAS_FSTAT) && \
2808 defined(HAS_USTAT) && \
2809 defined(HAS_GETMNT) && \
2810 defined(HAS_STRUCT_FS_DATA) && \
2811 defined(NOSTAT_ONE)
2812# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2813 struct stat fdst;
6439433f 2814
0545a864 2815 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2816 struct ustat us;
2817 if (ustat(fdst.st_dev, &us) == 0) {
2818 struct fs_data fsd;
2819 /* NOSTAT_ONE here because we're not examining fields which
2820 * vary between that case and STAT_ONE. */
ad27e871 2821 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2822 size_t cmplen = sizeof(us.f_fname);
2823 if (sizeof(fsd.fd_req.path) < cmplen)
2824 cmplen = sizeof(fsd.fd_req.path);
2825 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2826 fdst.st_dev == fsd.fd_req.dev) {
2827 check_okay = 1;
2828 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2829 }
2830 }
2831 }
2832 }
0545a864 2833 }
6439433f
JH
2834# endif /* fstat+ustat+getmnt */
2835
2836# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2837 defined(HAS_GETMNTENT) && \
2838 defined(HAS_HASMNTOPT) && \
2839 defined(MNTOPT_NOSUID)
2840# define FD_ON_NOSUID_CHECK_OKAY
2841 FILE *mtab = fopen("/etc/mtab", "r");
2842 struct mntent *entry;
2843 struct stat stb, fsb;
104d25b7
JH
2844
2845 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2846 while (entry = getmntent(mtab)) {
2847 if (stat(entry->mnt_dir, &fsb) == 0
2848 && fsb.st_dev == stb.st_dev)
2849 {
2850 /* found the filesystem */
2851 check_okay = 1;
2852 if (hasmntopt(entry, MNTOPT_NOSUID))
2853 on_nosuid = 1;
2854 break;
2855 } /* A single fs may well fail its stat(). */
2856 }
104d25b7
JH
2857 }
2858 if (mtab)
6439433f
JH
2859 fclose(mtab);
2860# endif /* getmntent+hasmntopt */
0545a864 2861
ac27b0f5 2862 if (!check_okay)
0545a864 2863 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2864 return on_nosuid;
2865}
2866#endif /* IAMSUID */
2867
76e3520e 2868STATIC void
cea2e8a9 2869S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2870{
155aba94 2871#ifdef IAMSUID
96436eeb 2872 int which;
155aba94 2873#endif
96436eeb 2874
13281fa4
LW
2875 /* do we need to emulate setuid on scripts? */
2876
2877 /* This code is for those BSD systems that have setuid #! scripts disabled
2878 * in the kernel because of a security problem. Merely defining DOSUID
2879 * in perl will not fix that problem, but if you have disabled setuid
2880 * scripts in the kernel, this will attempt to emulate setuid and setgid
2881 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2882 * root version must be called suidperl or sperlN.NNN. If regular perl
2883 * discovers that it has opened a setuid script, it calls suidperl with
2884 * the same argv that it had. If suidperl finds that the script it has
2885 * just opened is NOT setuid root, it sets the effective uid back to the
2886 * uid. We don't just make perl setuid root because that loses the
2887 * effective uid we had before invoking perl, if it was different from the
2888 * uid.
13281fa4
LW
2889 *
2890 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2891 * be defined in suidperl only. suidperl must be setuid root. The
2892 * Configure script will set this up for you if you want it.
2893 */
a687059c 2894
13281fa4 2895#ifdef DOSUID
6e72f9df 2896 char *s, *s2;
a0d0e21e 2897
b28d0864 2898 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2899 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2900 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2901 I32 len;
2d8e6c8d 2902 STRLEN n_a;
13281fa4 2903
a687059c 2904#ifdef IAMSUID
fe14fcc3 2905#ifndef HAS_SETREUID
a687059c
LW
2906 /* On this access check to make sure the directories are readable,
2907 * there is actually a small window that the user could use to make
2908 * filename point to an accessible directory. So there is a faint
2909 * chance that someone could execute a setuid script down in a
2910 * non-accessible directory. I don't know what to do about that.
2911 * But I don't think it's too important. The manual lies when
2912 * it says access() is useful in setuid programs.
2913 */
cc49e20b 2914 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2915 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2916#else
2917 /* If we can swap euid and uid, then we can determine access rights
2918 * with a simple stat of the file, and then compare device and
2919 * inode to make sure we did stat() on the same file we opened.
2920 * Then we just have to make sure he or she can execute it.
2921 */
2922 {
2923 struct stat tmpstatbuf;
2924
85e6fe83
LW
2925 if (
2926#ifdef HAS_SETREUID
b28d0864 2927 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2928#else
2929# if HAS_SETRESUID
b28d0864 2930 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2931# endif
85e6fe83 2932#endif
b28d0864 2933 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2934 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2935 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2936 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2937#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2938 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2939 Perl_croak(aTHX_ "Permission denied");
104d25b7 2940#endif
b28d0864
NIS
2941 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2942 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2943 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2944 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2945 }
85e6fe83
LW
2946 if (
2947#ifdef HAS_SETREUID
b28d0864 2948 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2949#else
2950# if defined(HAS_SETRESUID)
b28d0864 2951 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2952# endif
85e6fe83 2953#endif
b28d0864 2954 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2955 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2956 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2957 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2958 }
fe14fcc3 2959#endif /* HAS_SETREUID */
a687059c
LW
2960#endif /* IAMSUID */
2961
b28d0864 2962 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2963 Perl_croak(aTHX_ "Permission denied");
b28d0864 2964 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2965 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2966 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2967 CopLINE_inc(PL_curcop);
6b88bc9c 2968 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2969 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2970 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2971 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2972 if (*s == ' ') s++;
45d8adaa 2973 while (!isSPACE(*s)) s++;
2d8e6c8d 2974 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2975 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2976 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2977 Perl_croak(aTHX_ "Not a perl script");
a687059c 2978 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2979 /*
2980 * #! arg must be what we saw above. They can invoke it by
2981 * mentioning suidperl explicitly, but they may not add any strange
2982 * arguments beyond what #! says if they do invoke suidperl that way.
2983 */
2984 len = strlen(validarg);
2985 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2986 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2987 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
2988
2989#ifndef IAMSUID
b28d0864
NIS
2990 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2991 PL_euid == PL_statbuf.st_uid)
2992 if (!PL_do_undump)
cea2e8a9 2993 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2994FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2995#endif /* IAMSUID */
13281fa4 2996
b28d0864
NIS
2997 if (PL_euid) { /* oops, we're not the setuid root perl */
2998 (void)PerlIO_close(PL_rsfp);
13281fa4 2999#ifndef IAMSUID
46fc3d4c 3000 /* try again */
a7cb1f99 3001 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3002 (int)PERL_REVISION, (int)PERL_VERSION,
3003 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3004#endif
cea2e8a9 3005 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3006 }
3007
b28d0864 3008 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3009#ifdef HAS_SETEGID
b28d0864 3010 (void)setegid(PL_statbuf.st_gid);
a687059c 3011#else
fe14fcc3 3012#ifdef HAS_SETREGID
b28d0864 3013 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3014#else
3015#ifdef HAS_SETRESGID
b28d0864 3016 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3017#else
b28d0864 3018 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3019#endif
3020#endif
85e6fe83 3021#endif
b28d0864 3022 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3023 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3024 }
b28d0864
NIS
3025 if (PL_statbuf.st_mode & S_ISUID) {
3026 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3027#ifdef HAS_SETEUID
b28d0864 3028 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3029#else
fe14fcc3 3030#ifdef HAS_SETREUID
b28d0864 3031 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3032#else
3033#ifdef HAS_SETRESUID
b28d0864 3034 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3035#else
b28d0864 3036 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3037#endif
3038#endif
85e6fe83 3039#endif
b28d0864 3040 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3041 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3042 }
b28d0864 3043 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3044#ifdef HAS_SETEUID
b28d0864 3045 (void)seteuid((Uid_t)PL_uid);
a687059c 3046#else
fe14fcc3 3047#ifdef HAS_SETREUID
b28d0864 3048 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3049#else
85e6fe83 3050#ifdef HAS_SETRESUID
b28d0864 3051 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3052#else
b28d0864 3053 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3054#endif
a687059c
LW
3055#endif
3056#endif
b28d0864 3057 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3058 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3059 }
748a9306 3060 init_ids();
b28d0864 3061 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3062 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3063 }
3064#ifdef IAMSUID
6b88bc9c 3065 else if (PL_preprocess)
cea2e8a9 3066 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3067 else if (fdscript >= 0)
cea2e8a9 3068 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3069 else
cea2e8a9 3070 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3071
3072 /* We absolutely must clear out any saved ids here, so we */
3073 /* exec the real perl, substituting fd script for scriptname. */
3074 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3075 PerlIO_rewind(PL_rsfp);
3076 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3077 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3078 if (!PL_origargv[which])
cea2e8a9
GS
3079 Perl_croak(aTHX_ "Permission denied");
3080 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3081 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3082#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3083 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3084#endif
a7cb1f99 3085 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3086 (int)PERL_REVISION, (int)PERL_VERSION,
3087 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3088 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3089#endif /* IAMSUID */
a687059c 3090#else /* !DOSUID */
3280af22 3091 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3092#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3093 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3094 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3095 ||
b28d0864 3096 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3097 )
b28d0864 3098 if (!PL_do_undump)
cea2e8a9 3099 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3100FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3101#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3102 /* not set-id, must be wrapped */
a687059c 3103 }
13281fa4 3104#endif /* DOSUID */
79072805 3105}
13281fa4 3106
76e3520e 3107STATIC void
cea2e8a9 3108S_find_beginning(pTHX)
79072805 3109{
6e72f9df 3110 register char *s, *s2;
33b78306
LW
3111
3112 /* skip forward in input to the real script? */
3113
bbce6d69 3114 forbid_setid("-x");
bf4acbe4 3115#ifdef MACOS_TRADITIONAL
084592ab 3116 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3117
bf4acbe4
GS
3118 while (PL_doextract || gMacPerl_AlwaysExtract) {
3119 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3120 if (!gMacPerl_AlwaysExtract)
3121 Perl_croak(aTHX_ "No Perl script found in input\n");
3122
3123 if (PL_doextract) /* require explicit override ? */
3124 if (!OverrideExtract(PL_origfilename))
3125 Perl_croak(aTHX_ "User aborted script\n");
3126 else
3127 PL_doextract = FALSE;
3128
3129 /* Pater peccavi, file does not have #! */
3130 PerlIO_rewind(PL_rsfp);
ac27b0f5 3131
bf4acbe4
GS
3132 break;
3133 }
3134#else
3280af22
NIS
3135 while (PL_doextract) {
3136 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3137 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3138#endif
6e72f9df 3139 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS
3140 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3141 PL_doextract = FALSE;
6e72f9df
PP
3142 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3143 s2 = s;
3144 while (*s == ' ' || *s == '\t') s++;
3145 if (*s++ == '-') {
3146 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3147 if (strnEQ(s2-4,"perl",4))
3148 /*SUPPRESS 530*/
155aba94
GS
3149 while ((s = moreswitches(s)))
3150 ;
33b78306 3151 }
95e8664e
CN
3152#ifdef MACOS_TRADITIONAL
3153 break;
3154#endif
83025b21
LW
3155 }
3156 }
3157}
3158
afe37c7d 3159
76e3520e 3160STATIC void
cea2e8a9 3161S_init_ids(pTHX)
352d5a3a 3162{
d8eceb89
JH
3163 PL_uid = PerlProc_getuid();
3164 PL_euid = PerlProc_geteuid();
3165 PL_gid = PerlProc_getgid();
3166 PL_egid = PerlProc_getegid();
748a9306 3167#ifdef VMS
b28d0864
NIS
3168 PL_uid |= PL_gid << 16;
3169 PL_euid |= PL_egid << 16;
748a9306 3170#endif
3280af22 3171 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3172}
79072805 3173
76e3520e 3174STATIC void
cea2e8a9 3175S_forbid_setid(pTHX_ char *s)
bbce6d69 3176{
3280af22 3177 if (PL_euid != PL_uid)
cea2e8a9 3178 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3179 if (PL_egid != PL_gid)
cea2e8a9 3180 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3181}
3182
1ee4443e
IZ
3183void
3184Perl_init_debugger(pTHX)
748a9306 3185{
1ee4443e
IZ
3186 HV *ostash = PL_curstash;
3187
3280af22
NIS
3188 PL_curstash = PL_debstash;
3189 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3190 AvREAL_off(PL_dbargs);
3191 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3192 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3193 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3194 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3195 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3196 sv_setiv(PL_DBsingle, 0);
3280af22 3197 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3198 sv_setiv(PL_DBtrace, 0);
3280af22 3199 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3200 sv_setiv(PL_DBsignal, 0);
1ee4443e 3201 PL_curstash = ostash;
352d5a3a
LW
3202}
3203
2ce36478
SM
3204#ifndef STRESS_REALLOC
3205#define REASONABLE(size) (size)
3206#else
3207#define REASONABLE(size) (1) /* unreasonable */
3208#endif
3209
11343788 3210void
cea2e8a9 3211Perl_init_stacks(pTHX)
79072805 3212{
e336de0d 3213 /* start with 128-item stack and 8K cxstack */
3280af22 3214 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3215 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3216 PL_curstackinfo->si_type = PERLSI_MAIN;
3217 PL_curstack = PL_curstackinfo->si_stack;
3218 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3219
3280af22
NIS
3220 PL_stack_base = AvARRAY(PL_curstack);
3221 PL_stack_sp = PL_stack_base;
3222 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3223
3280af22
NIS
3224 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3225 PL_tmps_floor = -1;
3226 PL_tmps_ix = -1;
3227 PL_tmps_max = REASONABLE(128);
8990e307 3228
3280af22
NIS
3229 New(54,PL_markstack,REASONABLE(32),I32);
3230 PL_markstack_ptr = PL_markstack;
3231 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3232
ce2f7c3b 3233 SET_MARK_OFFSET;
e336de0d 3234
3280af22
NIS
3235 New(54,PL_scopestack,REASONABLE(32),I32);
3236 PL_scopestack_ix = 0;
3237 PL_scopestack_max = REASONABLE(32);
79072805 3238
3280af22
NIS
3239 New(54,PL_savestack,REASONABLE(128),ANY);
3240 PL_savestack_ix = 0;
3241 PL_savestack_max = REASONABLE(128);
79072805 3242
3280af22
NIS
3243 New(54,PL_retstack,REASONABLE(16),OP*);
3244 PL_retstack_ix = 0;
3245 PL_retstack_max = REASONABLE(16);
378cc40b 3246}
33b78306 3247
2ce36478
SM
3248#undef REASONABLE
3249
76e3520e 3250STATIC void
cea2e8a9 3251S_nuke_stacks(pTHX)
6e72f9df 3252{
3280af22
NIS
3253 while (PL_curstackinfo->si_next)
3254 PL_curstackinfo = PL_curstackinfo->si_next;
3255 while (PL_curstackinfo) {
3256 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3257 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3258 Safefree(PL_curstackinfo->si_cxstack);
3259 Safefree(PL_curstackinfo);
3260 PL_curstackinfo = p;
e336de0d 3261 }
3280af22
NIS
3262 Safefree(PL_tmps_stack);
3263 Safefree(PL_markstack);
3264 Safefree(PL_scopestack);
3265 Safefree(PL_savestack);
3266 Safefree(PL_retstack);
378cc40b 3267}
33b78306 3268
76e3520e 3269#ifndef PERL_OBJECT
760ac839 3270static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3271#endif
7aa04957 3272
76e3520e 3273STATIC void
cea2e8a9 3274S_init_lexer(pTHX)
8990e307 3275{
76e3520e
GS
3276#ifdef PERL_OBJECT
3277 PerlIO *tmpfp;
3278#endif
3280af22
NIS
3279 tmpfp = PL_rsfp;
3280 PL_rsfp = Nullfp;
3281 lex_start(PL_linestr);
3282 PL_rsfp = tmpfp;
79cb57f6 3283 PL_subname = newSVpvn("main",4);
8990e307
LW
3284}
3285
76e3520e 3286STATIC void
cea2e8a9 3287S_init_predump_symbols(pTHX)
45d8adaa 3288{
93a17b20 3289 GV *tmpgv;
af8c498a 3290 IO *io;
79072805 3291
864dbfa3 3292 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3293 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3294 GvMULTI_on(PL_stdingv);
af8c498a 3295 io = GvIOp(PL_stdingv);
a04651f4 3296 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3297 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3298 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3299 GvMULTI_on(tmpgv);
af8c498a 3300 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3301
85e6fe83 3302 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3303 GvMULTI_on(tmpgv);
af8c498a 3304 io = GvIOp(tmpgv);
a04651f4 3305 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3306 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3307 setdefout(tmpgv);
adbc6bb1 3308 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3309 GvMULTI_on(tmpgv);
af8c498a 3310 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3311
bf49b057
GS
3312 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3313 GvMULTI_on(PL_stderrgv);
3314 io = GvIOp(PL_stderrgv);
a04651f4 3315 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3316 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3317 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3318 GvMULTI_on(tmpgv);
af8c498a 3319 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3320
3280af22 3321 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3322
bf4acbe4
GS
3323 if (PL_osname)
3324 Safefree(PL_osname);
3325 PL_osname = savepv(OSNAME);
79072805 3326}
33b78306 3327
76e3520e 3328STATIC void
cea2e8a9 3329S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3330{
79072805
LW
3331 char *s;
3332 SV *sv;
3333 GV* tmpgv;
9cbac4c7 3334#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3335 char **dup_env_base = 0;
103a7189 3336 int dup_env_count = 0;
9cbac4c7 3337#endif
fe14fcc3 3338
79072805 3339 argc--,argv++; /* skip name of script */
3280af22 3340 if (PL_doswitches) {
79072805
LW
3341 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3342 if (!argv[0][1])
3343 break;
379d538a 3344 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3345 argc--,argv++;
3346 break;
3347 }
155aba94 3348 if ((s = strchr(argv[0], '='))) {
79072805 3349 *s++ = '\0';
85e6fe83 3350 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3351 }
3352 else
85e6fe83 3353 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3354 }
79072805 3355 }
3280af22
NIS
3356 PL_toptarget = NEWSV(0,0);
3357 sv_upgrade(PL_toptarget, SVt_PVFM);
3358 sv_setpvn(PL_toptarget, "", 0);
3359 PL_bodytarget = NEWSV(0,0);
3360 sv_upgrade(PL_bodytarget, SVt_PVFM);
3361 sv_setpvn(PL_bodytarget, "", 0);
3362 PL_formtarget = PL_bodytarget;
79072805 3363
bbce6d69 3364 TAINT;
155aba94 3365 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3366#ifdef MACOS_TRADITIONAL
3367 /* $0 is not majick on a Mac */
3368 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3369#else
3280af22 3370 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3371 magicname("0", "0", 1);
bf4acbe4 3372#endif
79072805 3373 }
155aba94 3374 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3375#ifdef OS2
23da6c43 3376 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3377#else
3280af22 3378 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3379#endif
155aba94 3380 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3381 GvMULTI_on(PL_argvgv);
3382 (void)gv_AVadd(PL_argvgv);
3383 av_clear(GvAVn(PL_argvgv));
79072805 3384 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3385 SV *sv = newSVpv(argv[0],0);
3386 av_push(GvAVn(PL_argvgv),sv);
3387 if (PL_widesyscalls)
e84ff256 3388 (void)sv_utf8_decode(sv);
79072805
LW
3389 }
3390 }
155aba94 3391 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3392 HV *hv;
3280af22
NIS
3393 GvMULTI_on(PL_envgv);
3394 hv = GvHVn(PL_envgv);
14befaf4 3395 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3396#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3397 /* Note that if the supplied env parameter is actually a copy
3398 of the global environ then it may now point to free'd memory
3399 if the environment has been modified since. To avoid this
3400 problem we treat env==NULL as meaning 'use the default'
3401 */
3402 if (!env)
3403 env = environ;
5aabfad6 3404 if (env != environ)
79072805 3405 environ[0] = Nullch;
103a7189
JH
3406#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3407 {
3408 char **env_base;
9041c2e3 3409 for (env_base = env; *env; env++)
103a7189
JH
3410 dup_env_count++;
3411 if ((dup_env_base = (char **)
480bfd1e 3412 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH
3413 char **dup_env;
3414 for (env = env_base, dup_env = dup_env_base;
3415 *env;
480bfd1e
JH
3416 env++, dup_env++) {
3417 /* With environ one needs to use safesysmalloc(). */
3418 *dup_env = safesysmalloc(strlen(*env) + 1);
3419 (void)strcpy(*dup_env, *env);
3420 }
103a7189
JH
3421 *dup_env = Nullch;
3422 env = dup_env_base;
3423 } /* else what? */
3424 }
3425#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3426 for (; *env; env++) {
93a17b20 3427 if (!(s = strchr(*env,'=')))
79072805
LW
3428 continue;
3429 *s++ = '\0';
60ce6247 3430#if defined(MSDOS)
137443ea
PP
3431 (void)strupr(*env);
3432#endif
79072805
LW
3433 sv = newSVpv(s--,0);
3434 (void)hv_store(hv, *env, s - *env, sv, 0);
3435 *s = '=';
fe14fcc3 3436 }
480bfd1e 3437#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH
3438 if (dup_env_base) {
3439 char **dup_env;
3440 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH
3441 safesysfree(*dup_env);
3442 safesysfree(dup_env_base);
103a7189 3443 }
7e0f6a1f 3444#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3445#endif /* USE_ENVIRON_ARRAY */
79072805 3446 }
bbce6d69 3447 TAINT_NOT;
155aba94 3448 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3449 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3450}
34de22dd 3451
76e3520e 3452STATIC void
cea2e8a9 3453S_init_perllib(pTHX)
34de22dd 3454{
85e6fe83 3455 char *s