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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
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LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
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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
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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 */
2b96b0a5
JH
229 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW
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 1154$\"=\"\\n \"; \
69fcd688
JH
1155@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1156#ifdef __CYGWIN__
1157 sv_catpv(PL_Sv,"\
1158push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1159#endif
1160 sv_catpv(PL_Sv, "\
6224f72b
GS
1161print \" \\%ENV:\\n @env\\n\" if @env; \
1162print \" \\@INC:\\n @INC\\n\";");
1163 }
1164 else {
3280af22
NIS
1165 PL_Sv = newSVpv("config_vars(qw(",0);
1166 sv_catpv(PL_Sv, ++s);
1167 sv_catpv(PL_Sv, "))");
6224f72b
GS
1168 s += strlen(s);
1169 }
3280af22 1170 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1171 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1172 goto reswitch;
1173 case 'x':
3280af22 1174 PL_doextract = TRUE;
6224f72b
GS
1175 s++;
1176 if (*s)
f4c556ac 1177 cddir = s;
6224f72b
GS
1178 break;
1179 case 0:
1180 break;
1181 case '-':
1182 if (!*++s || isSPACE(*s)) {
1183 argc--,argv++;
1184 goto switch_end;
1185 }
1186 /* catch use of gnu style long options */
1187 if (strEQ(s, "version")) {
1188 s = "v";
1189 goto reswitch;
1190 }
1191 if (strEQ(s, "help")) {
1192 s = "h";
1193 goto reswitch;
1194 }
1195 s--;
1196 /* FALL THROUGH */
1197 default:
cea2e8a9 1198 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1199 }
1200 }
6224f72b 1201 switch_end:
54310121 1202
f675dbe5
CB
1203 if (
1204#ifndef SECURE_INTERNAL_GETENV
1205 !PL_tainting &&
1206#endif
659ca9ea 1207 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1208 {
659ca9ea 1209 s = savepv(popts);
74288ac8
GS
1210 while (isSPACE(*s))
1211 s++;
1212 if (*s == '-' && *(s+1) == 'T')
1213 PL_tainting = TRUE;
1214 else {
1215 while (s && *s) {
4ea8f8fb 1216 char *d;
74288ac8
GS
1217 while (isSPACE(*s))
1218 s++;
1219 if (*s == '-') {
1220 s++;
1221 if (isSPACE(*s))
1222 continue;
1223 }
4ea8f8fb 1224 d = s;
74288ac8
GS
1225 if (!*s)
1226 break;
1227 if (!strchr("DIMUdmw", *s))
cea2e8a9 1228 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1229 while (++s && *s) {
1230 if (isSPACE(*s)) {
1231 *s++ = '\0';
1232 break;
1233 }
1234 }
1235 moreswitches(d);
6224f72b 1236 }
6224f72b
GS
1237 }
1238 }
a0d0e21e 1239
6224f72b
GS
1240 if (!scriptname)
1241 scriptname = argv[0];
3280af22 1242 if (PL_e_script) {
6224f72b
GS
1243 argc++,argv--;
1244 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1245 }
1246 else if (scriptname == Nullch) {
1247#ifdef MSDOS
1248 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1249 moreswitches("h");
1250#endif
1251 scriptname = "-";
1252 }
1253
1254 init_perllib();
1255
1256 open_script(scriptname,dosearch,sv,&fdscript);
1257
1258 validate_suid(validarg, scriptname,fdscript);
1259
64ca3a65 1260#ifndef PERL_MICRO
0b5b802d
GS
1261#if defined(SIGCHLD) || defined(SIGCLD)
1262 {
1263#ifndef SIGCHLD
1264# define SIGCHLD SIGCLD
1265#endif
1266 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1267 if (sigstate == SIG_IGN) {
1268 if (ckWARN(WARN_SIGNAL))
1269 Perl_warner(aTHX_ WARN_SIGNAL,
1270 "Can't ignore signal CHLD, forcing to default");
1271 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1272 }
1273 }
1274#endif
64ca3a65 1275#endif
0b5b802d 1276
bf4acbe4
GS
1277#ifdef MACOS_TRADITIONAL
1278 if (PL_doextract || gMacPerl_AlwaysExtract) {
1279#else
f4c556ac 1280 if (PL_doextract) {
bf4acbe4 1281#endif
6224f72b 1282 find_beginning();
f4c556ac
GS
1283 if (cddir && PerlDir_chdir(cddir) < 0)
1284 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1285
1286 }
6224f72b 1287
3280af22
NIS
1288 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1289 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1290 CvUNIQUE_on(PL_compcv);
1291
1292 PL_comppad = newAV();
1293 av_push(PL_comppad, Nullsv);
1294 PL_curpad = AvARRAY(PL_comppad);
1295 PL_comppad_name = newAV();
1296 PL_comppad_name_fill = 0;
1297 PL_min_intro_pending = 0;
1298 PL_padix = 0;
6224f72b 1299#ifdef USE_THREADS
79cb57f6 1300 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1301 PL_curpad[0] = (SV*)newAV();
1302 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1303 CvOWNER(PL_compcv) = 0;
1304 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1305 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1306#endif /* USE_THREADS */
1307
1308 comppadlist = newAV();
1309 AvREAL_off(comppadlist);
3280af22
NIS
1310 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1311 av_store(comppadlist, 1, (SV*)PL_comppad);
1312 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1313
0c4f7ff0 1314 boot_core_PerlIO();
6224f72b 1315 boot_core_UNIVERSAL();
9a34ef1d 1316#ifndef PERL_MICRO
09bef843 1317 boot_core_xsutils();
9a34ef1d 1318#endif
6224f72b
GS
1319
1320 if (xsinit)
0cb96387 1321 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1322#ifndef PERL_MICRO
ed79a026 1323#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1324 init_os_extras();
6224f72b 1325#endif
64ca3a65 1326#endif
6224f72b 1327
29209bc5 1328#ifdef USE_SOCKS
1b9c9cf5
DH
1329# ifdef HAS_SOCKS5_INIT
1330 socks5_init(argv[0]);
1331# else
29209bc5 1332 SOCKSinit(argv[0]);
1b9c9cf5 1333# endif
ac27b0f5 1334#endif
29209bc5 1335
6224f72b
GS
1336 init_predump_symbols();
1337 /* init_postdump_symbols not currently designed to be called */
1338 /* more than once (ENV isn't cleared first, for example) */
1339 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1340 if (!PL_do_undump)
6224f72b
GS
1341 init_postdump_symbols(argc,argv,env);
1342
1343 init_lexer();
1344
1345 /* now parse the script */
1346
1347 SETERRNO(0,SS$_NORMAL);
3280af22 1348 PL_error_count = 0;
bf4acbe4
GS
1349#ifdef MACOS_TRADITIONAL
1350 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1351 if (PL_minus_c)
1352 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1353 else {
1354 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1355 MacPerl_MPWFileName(PL_origfilename));
1356 }
1357 }
1358#else
3280af22
NIS
1359 if (yyparse() || PL_error_count) {
1360 if (PL_minus_c)
cea2e8a9 1361 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1362 else {
cea2e8a9 1363 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1364 PL_origfilename);
6224f72b
GS
1365 }
1366 }
bf4acbe4 1367#endif
57843af0 1368 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1369 PL_curstash = PL_defstash;
1370 PL_preprocess = FALSE;
1371 if (PL_e_script) {
1372 SvREFCNT_dec(PL_e_script);
1373 PL_e_script = Nullsv;
6224f72b
GS
1374 }
1375
1376 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1377 SvREFCNT_dec(PL_rs);
1378 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1379 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1380 if (PL_do_undump)
6224f72b
GS
1381 my_unexec();
1382
57843af0
GS
1383 if (isWARN_ONCE) {
1384 SAVECOPFILE(PL_curcop);
1385 SAVECOPLINE(PL_curcop);
3280af22 1386 gv_check(PL_defstash);
57843af0 1387 }
6224f72b
GS
1388
1389 LEAVE;
1390 FREETMPS;
1391
1392#ifdef MYMALLOC
1393 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1394 dump_mstats("after compilation:");
1395#endif
1396
1397 ENTER;
3280af22 1398 PL_restartop = 0;
312caa8e 1399 return NULL;
6224f72b
GS
1400}
1401
954c1994
GS
1402/*
1403=for apidoc perl_run
1404
1405Tells a Perl interpreter to run. See L<perlembed>.
1406
1407=cut
1408*/
1409
6224f72b 1410int
0cb96387 1411perl_run(pTHXx)
6224f72b 1412{
6224f72b 1413 I32 oldscope;
14dd3ad8 1414 int ret = 0;
db36c5a1 1415 dJMPENV;
cea2e8a9
GS
1416#ifdef USE_THREADS
1417 dTHX;
1418#endif
6224f72b 1419
3280af22 1420 oldscope = PL_scopestack_ix;
6224f72b 1421
14dd3ad8 1422#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1423 redo_body:
14dd3ad8
GS
1424 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1425#else
1426 JMPENV_PUSH(ret);
1427#endif
6224f72b
GS
1428 switch (ret) {
1429 case 1:
1430 cxstack_ix = -1; /* start context stack again */
312caa8e 1431 goto redo_body;
14dd3ad8
GS
1432 case 0: /* normal completion */
1433#ifndef PERL_FLEXIBLE_EXCEPTIONS
1434 redo_body:
1435 run_body(oldscope);
1436#endif
1437 /* FALL THROUGH */
1438 case 2: /* my_exit() */
3280af22 1439 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1440 LEAVE;
1441 FREETMPS;
3280af22 1442 PL_curstash = PL_defstash;
865be832 1443 if (PL_endav && !PL_minus_c)
3280af22 1444 call_list(oldscope, PL_endav);
6224f72b
GS
1445#ifdef MYMALLOC
1446 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1447 dump_mstats("after execution: ");
1448#endif
14dd3ad8
GS
1449 ret = STATUS_NATIVE_EXPORT;
1450 break;
6224f72b 1451 case 3:
312caa8e
CS
1452 if (PL_restartop) {
1453 POPSTACK_TO(PL_mainstack);
1454 goto redo_body;
6224f72b 1455 }
bf49b057 1456 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1457 FREETMPS;
14dd3ad8
GS
1458 ret = 1;
1459 break;
6224f72b
GS
1460 }
1461
14dd3ad8
GS
1462 JMPENV_POP;
1463 return ret;
312caa8e
CS
1464}
1465
14dd3ad8 1466#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1467STATIC void *
14dd3ad8 1468S_vrun_body(pTHX_ va_list args)
312caa8e 1469{
312caa8e
CS
1470 I32 oldscope = va_arg(args, I32);
1471
14dd3ad8
GS
1472 return run_body(oldscope);
1473}
1474#endif
1475
1476
1477STATIC void *
1478S_run_body(pTHX_ I32 oldscope)
1479{
6224f72b 1480 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1481 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1482
3280af22 1483 if (!PL_restartop) {
6224f72b
GS
1484 DEBUG_x(dump_all());
1485 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1486 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1487 PTR2UV(thr)));
6224f72b 1488
3280af22 1489 if (PL_minus_c) {
bf4acbe4
GS
1490#ifdef MACOS_TRADITIONAL
1491 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1492#else
bf49b057 1493 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1494#endif
6224f72b
GS
1495 my_exit(0);
1496 }
3280af22 1497 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1498 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1499 if (PL_initav)
1500 call_list(oldscope, PL_initav);
6224f72b
GS
1501 }
1502
1503 /* do it */
1504
3280af22 1505 if (PL_restartop) {
533c011a 1506 PL_op = PL_restartop;
3280af22 1507 PL_restartop = 0;
cea2e8a9 1508 CALLRUNOPS(aTHX);
6224f72b 1509 }
3280af22
NIS
1510 else if (PL_main_start) {
1511 CvDEPTH(PL_main_cv) = 1;
533c011a 1512 PL_op = PL_main_start;
cea2e8a9 1513 CALLRUNOPS(aTHX);
6224f72b
GS
1514 }
1515
f6b3007c
JH
1516 my_exit(0);
1517 /* NOTREACHED */
312caa8e 1518 return NULL;
6224f72b
GS
1519}
1520
954c1994
GS
1521/*
1522=for apidoc p||get_sv
1523
1524Returns the SV of the specified Perl scalar. If C<create> is set and the
1525Perl variable does not exist then it will be created. If C<create> is not
1526set and the variable does not exist then NULL is returned.
1527
1528=cut
1529*/
1530
6224f72b 1531SV*
864dbfa3 1532Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1533{
1534 GV *gv;
1535#ifdef USE_THREADS
1536 if (name[1] == '\0' && !isALPHA(name[0])) {
1537 PADOFFSET tmp = find_threadsv(name);
411caa50 1538 if (tmp != NOT_IN_PAD)
6224f72b 1539 return THREADSV(tmp);
6224f72b
GS
1540 }
1541#endif /* USE_THREADS */
1542 gv = gv_fetchpv(name, create, SVt_PV);
1543 if (gv)
1544 return GvSV(gv);
1545 return Nullsv;
1546}
1547
954c1994
GS
1548/*
1549=for apidoc p||get_av
1550
1551Returns the AV of the specified Perl array. If C<create> is set and the
1552Perl variable does not exist then it will be created. If C<create> is not
1553set and the variable does not exist then NULL is returned.
1554
1555=cut
1556*/
1557
6224f72b 1558AV*
864dbfa3 1559Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1560{
1561 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1562 if (create)
1563 return GvAVn(gv);
1564 if (gv)
1565 return GvAV(gv);
1566 return Nullav;
1567}
1568
954c1994
GS
1569/*
1570=for apidoc p||get_hv
1571
1572Returns the HV of the specified Perl hash. If C<create> is set and the
1573Perl variable does not exist then it will be created. If C<create> is not
1574set and the variable does not exist then NULL is returned.
1575
1576=cut
1577*/
1578
6224f72b 1579HV*
864dbfa3 1580Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1581{
a0d0e21e
LW
1582 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1583 if (create)
1584 return GvHVn(gv);
1585 if (gv)
1586 return GvHV(gv);
1587 return Nullhv;
1588}
1589
954c1994
GS
1590/*
1591=for apidoc p||get_cv
1592
1593Returns the CV of the specified Perl subroutine. If C<create> is set and
1594the Perl subroutine does not exist then it will be declared (which has the
1595same effect as saying C<sub name;>). If C<create> is not set and the
1596subroutine does not exist then NULL is returned.
1597
1598=cut
1599*/
1600
a0d0e21e 1601CV*
864dbfa3 1602Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1603{
1604 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1605 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1606 /* XXX this is probably not what they think they're getting.
1607 * It has the same effect as "sub name;", i.e. just a forward
1608 * declaration! */
8ebc5c01 1609 if (create && !GvCVu(gv))
774d564b 1610 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1611 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1612 Nullop,
a0d0e21e
LW
1613 Nullop);
1614 if (gv)
8ebc5c01 1615 return GvCVu(gv);
a0d0e21e
LW
1616 return Nullcv;
1617}
1618
79072805
LW
1619/* Be sure to refetch the stack pointer after calling these routines. */
1620
954c1994
GS
1621/*
1622=for apidoc p||call_argv
1623
1624Performs a callback to the specified Perl sub. See L<perlcall>.
1625
1626=cut
1627*/
1628
a0d0e21e 1629I32
864dbfa3 1630Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1631
8ac85365
NIS
1632 /* See G_* flags in cop.h */
1633 /* null terminated arg list */
8990e307 1634{
a0d0e21e 1635 dSP;
8990e307 1636
924508f0 1637 PUSHMARK(SP);
a0d0e21e 1638 if (argv) {
8990e307 1639 while (*argv) {
a0d0e21e 1640 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1641 argv++;
1642 }
a0d0e21e 1643 PUTBACK;
8990e307 1644 }
864dbfa3 1645 return call_pv(sub_name, flags);
8990e307
LW
1646}
1647
954c1994
GS
1648/*
1649=for apidoc p||call_pv
1650
1651Performs a callback to the specified Perl sub. See L<perlcall>.
1652
1653=cut
1654*/
1655
a0d0e21e 1656I32
864dbfa3 1657Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1658 /* name of the subroutine */
1659 /* See G_* flags in cop.h */
a0d0e21e 1660{
864dbfa3 1661 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1662}
1663
954c1994
GS
1664/*
1665=for apidoc p||call_method
1666
1667Performs a callback to the specified Perl method. The blessed object must
1668be on the stack. See L<perlcall>.
1669
1670=cut
1671*/
1672
a0d0e21e 1673I32
864dbfa3 1674Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1675 /* name of the subroutine */
1676 /* See G_* flags in cop.h */
a0d0e21e 1677{
968b3946 1678 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1679}
1680
1681/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1682/*
1683=for apidoc p||call_sv
1684
1685Performs a callback to the Perl sub whose name is in the SV. See
1686L<perlcall>.
1687
1688=cut
1689*/
1690
a0d0e21e 1691I32
864dbfa3 1692Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1693 /* See G_* flags in cop.h */
a0d0e21e 1694{
924508f0 1695 dSP;
a0d0e21e 1696 LOGOP myop; /* fake syntax tree node */
968b3946 1697 UNOP method_op;
aa689395 1698 I32 oldmark;
13689cfe 1699 volatile I32 retval = 0;
a0d0e21e 1700 I32 oldscope;
54310121 1701 bool oldcatch = CATCH_GET;
6224f72b 1702 int ret;
533c011a 1703 OP* oldop = PL_op;
db36c5a1 1704 dJMPENV;
1e422769 1705
a0d0e21e
LW
1706 if (flags & G_DISCARD) {
1707 ENTER;
1708 SAVETMPS;
1709 }
1710
aa689395 1711 Zero(&myop, 1, LOGOP);
54310121 1712 myop.op_next = Nullop;
f51d4af5 1713 if (!(flags & G_NOARGS))
aa689395 1714 myop.op_flags |= OPf_STACKED;
54310121
PP
1715 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1716 (flags & G_ARRAY) ? OPf_WANT_LIST :
1717 OPf_WANT_SCALAR);
462e5cf6 1718 SAVEOP();
533c011a 1719 PL_op = (OP*)&myop;
aa689395 1720
3280af22
NIS
1721 EXTEND(PL_stack_sp, 1);
1722 *++PL_stack_sp = sv;
aa689395 1723 oldmark = TOPMARK;
3280af22 1724 oldscope = PL_scopestack_ix;
a0d0e21e 1725
3280af22 1726 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1727 /* Handle first BEGIN of -d. */
3280af22 1728 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1729 /* Try harder, since this may have been a sighandler, thus
1730 * curstash may be meaningless. */
3280af22 1731 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1732 && !(flags & G_NODEBUG))
533c011a 1733 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1734
968b3946
GS
1735 if (flags & G_METHOD) {
1736 Zero(&method_op, 1, UNOP);
1737 method_op.op_next = PL_op;
1738 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1739 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1740 PL_op = (OP*)&method_op;
968b3946
GS
1741 }
1742
312caa8e 1743 if (!(flags & G_EVAL)) {
0cdb2077 1744 CATCH_SET(TRUE);
14dd3ad8 1745 call_body((OP*)&myop, FALSE);
312caa8e 1746 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1747 CATCH_SET(oldcatch);
312caa8e
CS
1748 }
1749 else {
d78bda3d 1750 myop.op_other = (OP*)&myop;
3280af22 1751 PL_markstack_ptr--;
4633a7c4
LW
1752 /* we're trying to emulate pp_entertry() here */
1753 {
c09156bb 1754 register PERL_CONTEXT *cx;
54310121 1755 I32 gimme = GIMME_V;
ac27b0f5 1756
4633a7c4
LW
1757 ENTER;
1758 SAVETMPS;
ac27b0f5 1759
968b3946 1760 push_return(Nullop);
1d76a5c3 1761 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1762 PUSHEVAL(cx, 0, 0);
533c011a 1763 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1764
faef0170 1765 PL_in_eval = EVAL_INEVAL;
4633a7c4 1766 if (flags & G_KEEPERR)
faef0170 1767 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1768 else
38a03e6e 1769 sv_setpv(ERRSV,"");
4633a7c4 1770 }
3280af22 1771 PL_markstack_ptr++;
a0d0e21e 1772
14dd3ad8
GS
1773#ifdef PERL_FLEXIBLE_EXCEPTIONS
1774 redo_body:
1775 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1776 (OP*)&myop, FALSE);
14dd3ad8
GS
1777#else
1778 JMPENV_PUSH(ret);
1779#endif
6224f72b
GS
1780 switch (ret) {
1781 case 0:
14dd3ad8
GS
1782#ifndef PERL_FLEXIBLE_EXCEPTIONS
1783 redo_body:
1784 call_body((OP*)&myop, FALSE);
1785#endif
312caa8e
CS
1786 retval = PL_stack_sp - (PL_stack_base + oldmark);
1787 if (!(flags & G_KEEPERR))
1788 sv_setpv(ERRSV,"");
a0d0e21e 1789 break;
6224f72b 1790 case 1:
f86702cc 1791 STATUS_ALL_FAILURE;
a0d0e21e 1792 /* FALL THROUGH */
6224f72b 1793 case 2:
a0d0e21e 1794 /* my_exit() was called */
3280af22 1795 PL_curstash = PL_defstash;
a0d0e21e 1796 FREETMPS;
14dd3ad8 1797 JMPENV_POP;
cc3604b1 1798 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1799 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1800 my_exit_jump();
a0d0e21e 1801 /* NOTREACHED */
6224f72b 1802 case 3:
3280af22 1803 if (PL_restartop) {
533c011a 1804 PL_op = PL_restartop;
3280af22 1805 PL_restartop = 0;
312caa8e 1806 goto redo_body;
a0d0e21e 1807 }
3280af22 1808 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1809 if (flags & G_ARRAY)
1810 retval = 0;
1811 else {
1812 retval = 1;
3280af22 1813 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1814 }
312caa8e 1815 break;
a0d0e21e 1816 }
a0d0e21e 1817
3280af22 1818 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1819 SV **newsp;
1820 PMOP *newpm;
1821 I32 gimme;
c09156bb 1822 register PERL_CONTEXT *cx;
a0a2876f
LW
1823 I32 optype;
1824
1825 POPBLOCK(cx,newpm);
1826 POPEVAL(cx);
1827 pop_return();
3280af22 1828 PL_curpm = newpm;
a0a2876f 1829 LEAVE;
a0d0e21e 1830 }
14dd3ad8 1831 JMPENV_POP;
a0d0e21e 1832 }
1e422769 1833
a0d0e21e 1834 if (flags & G_DISCARD) {
3280af22 1835 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1836 retval = 0;
1837 FREETMPS;
1838 LEAVE;
1839 }
533c011a 1840 PL_op = oldop;
a0d0e21e
LW
1841 return retval;
1842}
1843
14dd3ad8 1844#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1845STATIC void *
14dd3ad8 1846S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1847{
1848 OP *myop = va_arg(args, OP*);
1849 int is_eval = va_arg(args, int);
1850
14dd3ad8 1851 call_body(myop, is_eval);
312caa8e
CS
1852 return NULL;
1853}
14dd3ad8 1854#endif
312caa8e
CS
1855
1856STATIC void
14dd3ad8 1857S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1858{
312caa8e
CS
1859 if (PL_op == myop) {
1860 if (is_eval)
f807eda9 1861 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1862 else
f807eda9 1863 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1864 }
1865 if (PL_op)
cea2e8a9 1866 CALLRUNOPS(aTHX);
312caa8e
CS
1867}
1868
6e72f9df 1869/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1870
954c1994
GS
1871/*
1872=for apidoc p||eval_sv
1873
1874Tells Perl to C<eval> the string in the SV.
1875
1876=cut
1877*/
1878
a0d0e21e 1879I32
864dbfa3 1880Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1881
8ac85365 1882 /* See G_* flags in cop.h */
a0d0e21e 1883{
924508f0 1884 dSP;
a0d0e21e 1885 UNOP myop; /* fake syntax tree node */
8fa7f367 1886 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1887 volatile I32 retval = 0;
4633a7c4 1888 I32 oldscope;
6224f72b 1889 int ret;
533c011a 1890 OP* oldop = PL_op;
db36c5a1 1891 dJMPENV;
84902520 1892
4633a7c4
LW
1893 if (flags & G_DISCARD) {
1894 ENTER;
1895 SAVETMPS;
1896 }
1897
462e5cf6 1898 SAVEOP();
533c011a
NIS
1899 PL_op = (OP*)&myop;
1900 Zero(PL_op, 1, UNOP);
3280af22
NIS
1901 EXTEND(PL_stack_sp, 1);
1902 *++PL_stack_sp = sv;
1903 oldscope = PL_scopestack_ix;
79072805 1904
4633a7c4
LW
1905 if (!(flags & G_NOARGS))
1906 myop.op_flags = OPf_STACKED;
79072805 1907 myop.op_next = Nullop;
6e72f9df 1908 myop.op_type = OP_ENTEREVAL;
54310121
PP
1909 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1910 (flags & G_ARRAY) ? OPf_WANT_LIST :
1911 OPf_WANT_SCALAR);
6e72f9df
PP
1912 if (flags & G_KEEPERR)
1913 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1914
14dd3ad8 1915#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1916 redo_body:
14dd3ad8 1917 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1918 (OP*)&myop, TRUE);
14dd3ad8
GS
1919#else
1920 JMPENV_PUSH(ret);
1921#endif
6224f72b
GS
1922 switch (ret) {
1923 case 0:
14dd3ad8
GS
1924#ifndef PERL_FLEXIBLE_EXCEPTIONS
1925 redo_body:
1926 call_body((OP*)&myop,TRUE);
1927#endif
312caa8e
CS
1928 retval = PL_stack_sp - (PL_stack_base + oldmark);
1929 if (!(flags & G_KEEPERR))
1930 sv_setpv(ERRSV,"");
4633a7c4 1931 break;
6224f72b 1932 case 1:
f86702cc 1933 STATUS_ALL_FAILURE;
4633a7c4 1934 /* FALL THROUGH */
6224f72b 1935 case 2:
4633a7c4 1936 /* my_exit() was called */
3280af22 1937 PL_curstash = PL_defstash;
4633a7c4 1938 FREETMPS;
14dd3ad8 1939 JMPENV_POP;
cc3604b1 1940 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1941 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1942 my_exit_jump();
4633a7c4 1943 /* NOTREACHED */
6224f72b 1944 case 3:
3280af22 1945 if (PL_restartop) {
533c011a 1946 PL_op = PL_restartop;
3280af22 1947 PL_restartop = 0;
312caa8e 1948 goto redo_body;
4633a7c4 1949 }
3280af22 1950 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1951 if (flags & G_ARRAY)
1952 retval = 0;
1953 else {
1954 retval = 1;
3280af22 1955 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1956 }
312caa8e 1957 break;
4633a7c4
LW
1958 }
1959
14dd3ad8 1960 JMPENV_POP;
4633a7c4 1961 if (flags & G_DISCARD) {
3280af22 1962 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1963 retval = 0;
1964 FREETMPS;
1965 LEAVE;
1966 }
533c011a 1967 PL_op = oldop;
4633a7c4
LW
1968 return retval;
1969}
1970
954c1994
GS
1971/*
1972=for apidoc p||eval_pv
1973
1974Tells Perl to C<eval> the given string and return an SV* result.
1975
1976=cut
1977*/
1978
137443ea 1979SV*
864dbfa3 1980Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
1981{
1982 dSP;
1983 SV* sv = newSVpv(p, 0);
1984
864dbfa3 1985 eval_sv(sv, G_SCALAR);
137443ea
PP
1986 SvREFCNT_dec(sv);
1987
1988 SPAGAIN;
1989 sv = POPs;
1990 PUTBACK;
1991
2d8e6c8d
GS
1992 if (croak_on_error && SvTRUE(ERRSV)) {
1993 STRLEN n_a;
cea2e8a9 1994 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1995 }
137443ea
PP
1996
1997 return sv;
1998}
1999
4633a7c4
LW
2000/* Require a module. */
2001
954c1994
GS
2002/*
2003=for apidoc p||require_pv
2004
7d3fb230
BS
2005Tells Perl to C<require> the file named by the string argument. It is
2006analogous to the Perl code C<eval "require '$file'">. It's even
2007implemented that way; consider using Perl_load_module instead.
954c1994 2008
7d3fb230 2009=cut */
954c1994 2010
4633a7c4 2011void
864dbfa3 2012Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2013{
d3acc0f7
JP
2014 SV* sv;
2015 dSP;
e788e7d3 2016 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2017 PUTBACK;
2018 sv = sv_newmortal();
4633a7c4
LW
2019 sv_setpv(sv, "require '");
2020 sv_catpv(sv, pv);
2021 sv_catpv(sv, "'");
864dbfa3 2022 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2023 SPAGAIN;
2024 POPSTACK;
79072805
LW
2025}
2026
79072805 2027void
864dbfa3 2028Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2029{
2030 register GV *gv;
2031
155aba94 2032 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2033 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2034}
2035
76e3520e 2036STATIC void
cea2e8a9 2037S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2038{
ab821d7f
PP
2039 /* This message really ought to be max 23 lines.
2040 * Removed -h because the user already knows that opton. Others? */
fb73857a 2041
76e3520e 2042 static char *usage_msg[] = {
fb73857a
PP
2043"-0[octal] specify record separator (\\0, if no argument)",
2044"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2045"-C enable native wide character system interfaces",
1950ee41 2046"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2047"-d[:debugger] run program under debugger",
2048"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2049"-e 'command' one line of program (several -e's allowed, omit programfile)",
2050"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2051"-i[extension] edit <> files in place (makes backup if extension supplied)",
2052"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2053"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2054"-[mM][-]module execute `use/no module...' before executing program",
2055"-n assume 'while (<>) { ... }' loop around program",
2056"-p assume loop like -n but print line also, like sed",
2057"-P run program through C preprocessor before compilation",
2058"-s enable rudimentary parsing for switches after programfile",
2059"-S look for programfile using PATH environment variable",
2060"-T enable tainting checks",
2061"-u dump core after parsing program",
fb73857a 2062"-U allow unsafe operations",
aac3bd0d
GS
2063"-v print version, subversion (includes VERY IMPORTANT perl info)",
2064"-V[:variable] print configuration summary (or a single Config.pm variable)",
2065"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2066"-W enable all warnings",
2067"-X disable all warnings",
fb73857a
PP
2068"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2069"\n",
2070NULL
2071};
76e3520e 2072 char **p = usage_msg;
fb73857a 2073
b0e47665
GS
2074 PerlIO_printf(PerlIO_stdout(),
2075 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2076 name);
fb73857a 2077 while (*p)
b0e47665 2078 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2079}
2080
79072805
LW
2081/* This routine handles any switches that can be given during run */
2082
2083char *
864dbfa3 2084Perl_moreswitches(pTHX_ char *s)
79072805 2085{
ba210ebe 2086 STRLEN numlen;
c07a80fd 2087 U32 rschar;
79072805
LW
2088
2089 switch (*s) {
2090 case '0':
a863c7d1 2091 {
b21ed0a9 2092 numlen = 0; /* disallow underscores */
dff6d3cd 2093 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2094 SvREFCNT_dec(PL_nrs);
c07a80fd 2095 if (rschar & ~((U8)~0))
3280af22 2096 PL_nrs = &PL_sv_undef;
c07a80fd 2097 else if (!rschar && numlen >= 2)
79cb57f6 2098 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2099 else {
2100 char ch = rschar;
79cb57f6 2101 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2102 }
2103 return s + numlen;
a863c7d1 2104 }
46487f74
GS
2105 case 'C':
2106 PL_widesyscalls = TRUE;
2107 s++;
2108 return s;
2304df62 2109 case 'F':
3280af22
NIS
2110 PL_minus_F = TRUE;
2111 PL_splitstr = savepv(s + 1);
2304df62
AD
2112 s += strlen(s);
2113 return s;
79072805 2114 case 'a':
3280af22 2115 PL_minus_a = TRUE;
79072805
LW
2116 s++;
2117 return s;
2118 case 'c':
3280af22 2119 PL_minus_c = TRUE;
79072805
LW
2120 s++;
2121 return s;
2122 case 'd':
bbce6d69 2123 forbid_setid("-d");
4633a7c4 2124 s++;
70c94a19
RR
2125 /* The following permits -d:Mod to accepts arguments following an =
2126 in the fashion that -MSome::Mod does. */
2127 if (*s == ':' || *s == '=') {
2128 char *start;
2129 SV *sv;
2130 sv = newSVpv("use Devel::", 0);
2131 start = ++s;
2132 /* We now allow -d:Module=Foo,Bar */
2133 while(isALNUM(*s) || *s==':') ++s;
2134 if (*s != '=')
2135 sv_catpv(sv, start);
2136 else {
2137 sv_catpvn(sv, start, s-start);
2138 sv_catpv(sv, " split(/,/,q{");
2139 sv_catpv(sv, ++s);
2140 sv_catpv(sv, "})");
2141 }
4633a7c4 2142 s += strlen(s);
70c94a19 2143 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2144 }
ed094faf 2145 if (!PL_perldb) {
3280af22 2146 PL_perldb = PERLDB_ALL;
a0d0e21e 2147 init_debugger();
ed094faf 2148 }
79072805
LW
2149 return s;
2150 case 'D':
0453d815 2151 {
79072805 2152#ifdef DEBUGGING
bbce6d69 2153 forbid_setid("-D");
79072805 2154 if (isALPHA(s[1])) {
04932ac8
DM
2155 /* if adding extra options, remember to update DEBUG_MASK */
2156 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2157 char *d;
2158
93a17b20 2159 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2160 PL_debug |= 1 << (d - debopts);
79072805
LW
2161 }
2162 else {
3280af22 2163 PL_debug = atoi(s+1);
79072805
LW
2164 for (s++; isDIGIT(*s); s++) ;
2165 }
aea4f609 2166 PL_debug |= DEBUG_TOP_FLAG;
79072805 2167#else
0453d815
PM
2168 if (ckWARN_d(WARN_DEBUGGING))
2169 Perl_warner(aTHX_ WARN_DEBUGGING,
2170 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2171 for (s++; isALNUM(*s); s++) ;
79072805
LW
2172#endif
2173 /*SUPPRESS 530*/
2174 return s;
0453d815 2175 }
4633a7c4 2176 case 'h':
ac27b0f5 2177 usage(PL_origargv[0]);
6ad3d225 2178 PerlProc_exit(0);
79072805 2179 case 'i':
3280af22
NIS
2180 if (PL_inplace)
2181 Safefree(PL_inplace);
2182 PL_inplace = savepv(s+1);
79072805 2183 /*SUPPRESS 530*/
3280af22 2184 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2185 if (*s) {
fb73857a 2186 *s++ = '\0';
7b8d334a
GS
2187 if (*s == '-') /* Additional switches on #! line. */
2188 s++;
2189 }
fb73857a
PP
2190 return s;
2191 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2192 forbid_setid("-I");
fb73857a
PP
2193 ++s;
2194 while (*s && isSPACE(*s))
2195 ++s;
2196 if (*s) {
774d564b 2197 char *e, *p;
0df16ed7
GS
2198 p = s;
2199 /* ignore trailing spaces (possibly followed by other switches) */
2200 do {
2201 for (e = p; *e && !isSPACE(*e); e++) ;
2202 p = e;
2203 while (isSPACE(*p))
2204 p++;
2205 } while (*p && *p != '-');
2206 e = savepvn(s, e-s);
9c8a64f0 2207 incpush(e, TRUE, TRUE);
0df16ed7
GS
2208 Safefree(e);
2209 s = p;
2210 if (*s == '-')
2211 s++;
79072805
LW
2212 }
2213 else
a67e862a 2214 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2215 return s;
79072805 2216 case 'l':
3280af22 2217 PL_minus_l = TRUE;
79072805 2218 s++;
7889fe52
NIS
2219 if (PL_ors_sv) {
2220 SvREFCNT_dec(PL_ors_sv);
2221 PL_ors_sv = Nullsv;
2222 }
79072805 2223 if (isDIGIT(*s)) {
7889fe52 2224 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2225 numlen = 0; /* disallow underscores */
7889fe52 2226 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2227 s += numlen;
2228 }
2229 else {
3280af22 2230 if (RsPARA(PL_nrs)) {
7889fe52
NIS
2231 PL_ors_sv = newSVpvn("\n\n",2);
2232 }
2233 else {
2234 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2235 }
79072805
LW
2236 }
2237 return s;
1a30305b 2238 case 'M':
bbce6d69 2239 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2240 /* FALL THROUGH */
2241 case 'm':
bbce6d69 2242 forbid_setid("-m"); /* XXX ? */
1a30305b 2243 if (*++s) {
a5f75d66 2244 char *start;
11343788 2245 SV *sv;
a5f75d66
AD
2246 char *use = "use ";
2247 /* -M-foo == 'no foo' */
2248 if (*s == '-') { use = "no "; ++s; }
11343788 2249 sv = newSVpv(use,0);
a5f75d66 2250 start = s;
1a30305b 2251 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2252 while(isALNUM(*s) || *s==':') ++s;
2253 if (*s != '=') {
11343788 2254 sv_catpv(sv, start);
c07a80fd
PP
2255 if (*(start-1) == 'm') {
2256 if (*s != '\0')
cea2e8a9 2257 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2258 sv_catpv( sv, " ()");
c07a80fd
PP
2259 }
2260 } else {
6df41af2 2261 if (s == start)
be98fb35
GS
2262 Perl_croak(aTHX_ "Module name required with -%c option",
2263 s[-1]);
11343788
MB
2264 sv_catpvn(sv, start, s-start);
2265 sv_catpv(sv, " split(/,/,q{");
2266 sv_catpv(sv, ++s);
2267 sv_catpv(sv, "})");
c07a80fd 2268 }
1a30305b 2269 s += strlen(s);
5c831c24 2270 if (!PL_preambleav)
3280af22
NIS
2271 PL_preambleav = newAV();
2272 av_push(PL_preambleav, sv);
1a30305b
PP
2273 }
2274 else
cea2e8a9 2275 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2276 return s;
79072805 2277 case 'n':
3280af22 2278 PL_minus_n = TRUE;
79072805
LW
2279 s++;
2280 return s;
2281 case 'p':
3280af22 2282 PL_minus_p = TRUE;
79072805
LW
2283 s++;
2284 return s;
2285 case 's':
bbce6d69 2286 forbid_setid("-s");
3280af22 2287 PL_doswitches = TRUE;
79072805
LW
2288 s++;
2289 return s;
463ee0b2 2290 case 'T':
3280af22 2291 if (!PL_tainting)
cea2e8a9 2292 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2293 s++;
2294 return s;
79072805 2295 case 'u':
bf4acbe4
GS
2296#ifdef MACOS_TRADITIONAL
2297 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2298#endif
3280af22 2299 PL_do_undump = TRUE;
79072805
LW
2300 s++;
2301 return s;
2302 case 'U':
3280af22 2303 PL_unsafe = TRUE;
79072805
LW
2304 s++;
2305 return s;
2306 case 'v':
8e9464f1 2307#if !defined(DGUX)
b0e47665 2308 PerlIO_printf(PerlIO_stdout(),
d2560b70 2309 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2310 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2311#else /* DGUX */
2312/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2313 PerlIO_printf(PerlIO_stdout(),
2314 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2315 PerlIO_printf(PerlIO_stdout(),
2316 Perl_form(aTHX_ " built under %s at %s %s\n",
2317 OSNAME, __DATE__, __TIME__));
2318 PerlIO_printf(PerlIO_stdout(),
2319 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2320 OSVERS));
8e9464f1
JH
2321#endif /* !DGUX */
2322
fb73857a
PP
2323#if defined(LOCAL_PATCH_COUNT)
2324 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2325 PerlIO_printf(PerlIO_stdout(),
2326 "\n(with %d registered patch%s, "
2327 "see perl -V for more detail)",
2328 (int)LOCAL_PATCH_COUNT,
2329 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2330#endif
1a30305b 2331
b0e47665 2332 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2333 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2334#ifdef MACOS_TRADITIONAL
2335 PerlIO_printf(PerlIO_stdout(),
084592ab 2336 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2337#endif
79072805 2338#ifdef MSDOS
b0e47665
GS
2339 PerlIO_printf(PerlIO_stdout(),
2340 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2341#endif
2342#ifdef DJGPP
b0e47665
GS
2343 PerlIO_printf(PerlIO_stdout(),
2344 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2345 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2346#endif
79072805 2347#ifdef OS2
b0e47665
GS
2348 PerlIO_printf(PerlIO_stdout(),
2349 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2350 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2351#endif
79072805 2352#ifdef atarist
b0e47665
GS
2353 PerlIO_printf(PerlIO_stdout(),
2354 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2355#endif
a3f9223b 2356#ifdef __BEOS__
b0e47665
GS
2357 PerlIO_printf(PerlIO_stdout(),
2358 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2359#endif
1d84e8df 2360#ifdef MPE
b0e47665 2361 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2362 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2363#endif
9d116dd7 2364#ifdef OEMVS
b0e47665
GS
2365 PerlIO_printf(PerlIO_stdout(),
2366 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2367#endif
495c5fdc 2368#ifdef __VOS__
b0e47665
GS
2369 PerlIO_printf(PerlIO_stdout(),
2370 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2371#endif
092bebab 2372#ifdef __OPEN_VM
b0e47665
GS
2373 PerlIO_printf(PerlIO_stdout(),
2374 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2375#endif
a1a0e61e 2376#ifdef POSIX_BC
b0e47665
GS
2377 PerlIO_printf(PerlIO_stdout(),
2378 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2379#endif
61ae2fbf 2380#ifdef __MINT__
b0e47665
GS
2381 PerlIO_printf(PerlIO_stdout(),
2382 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2383#endif
f83d2536 2384#ifdef EPOC
b0e47665
GS
2385 PerlIO_printf(PerlIO_stdout(),
2386 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2387#endif
baed7233
DL
2388#ifdef BINARY_BUILD_NOTICE
2389 BINARY_BUILD_NOTICE;
2390#endif
b0e47665
GS
2391 PerlIO_printf(PerlIO_stdout(),
2392 "\n\
79072805 2393Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2394GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2395Complete documentation for Perl, including FAQ lists, should be found on\n\
2396this system using `man perl' or `perldoc perl'. If you have access to the\n\
2397Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2398 PerlProc_exit(0);
79072805 2399 case 'w':
599cee73 2400 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2401 PL_dowarn |= G_WARN_ON;
599cee73
PM
2402 s++;
2403 return s;
2404 case 'W':
ac27b0f5 2405 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2406 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2407 s++;
2408 return s;
2409 case 'X':
ac27b0f5 2410 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2411 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2412 s++;
2413 return s;
a0d0e21e 2414 case '*':
79072805
LW
2415 case ' ':
2416 if (s[1] == '-') /* Additional switches on #! line. */
2417 return s+2;
2418 break;
a0d0e21e 2419 case '-':
79072805 2420 case 0:
51882d45 2421#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2422 case '\r':
2423#endif
79072805
LW
2424 case '\n':
2425 case '\t':
2426 break;
aa689395
PP
2427#ifdef ALTERNATE_SHEBANG
2428 case 'S': /* OS/2 needs -S on "extproc" line. */
2429 break;
2430#endif
a0d0e21e 2431 case 'P':
3280af22 2432 if (PL_preprocess)
a0d0e21e
LW
2433 return s+1;
2434 /* FALL THROUGH */
79072805 2435 default:
cea2e8a9 2436 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2437 }
2438 return Nullch;
2439}
2440
2441/* compliments of Tom Christiansen */
2442
2443/* unexec() can be found in the Gnu emacs distribution */
ee580363 2444/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2445
2446void
864dbfa3 2447Perl_my_unexec(pTHX)
79072805
LW
2448{
2449#ifdef UNEXEC
46fc3d4c
PP
2450 SV* prog;
2451 SV* file;
ee580363 2452 int status = 1;
79072805
LW
2453 extern int etext;
2454
ee580363 2455 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2456 sv_catpv(prog, "/perl");
6b88bc9c 2457 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2458 sv_catpv(file, ".perldump");
79072805 2459
ee580363
GS
2460 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2461 /* unexec prints msg to stderr in case of failure */
6ad3d225 2462 PerlProc_exit(status);
79072805 2463#else
a5f75d66
AD
2464# ifdef VMS
2465# include <lib$routines.h>
2466 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2467# else
79072805 2468 ABORT(); /* for use with undump */
aa689395 2469# endif
a5f75d66 2470#endif
79072805
LW
2471}
2472
cb68f92d
GS
2473/* initialize curinterp */
2474STATIC void
cea2e8a9 2475S_init_interp(pTHX)
cb68f92d
GS
2476{
2477
066ef5b5 2478#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2479#define I_REINIT \
6b88bc9c
GS
2480 STMT_START { \
2481 PL_chopset = " \n-"; \
2482 PL_copline = NOLINE; \
2483 PL_curcop = &PL_compiling;\
2484 PL_curcopdb = NULL; \
2485 PL_dbargs = 0; \
3967c732 2486 PL_dumpindent = 4; \
6b88bc9c
GS
2487 PL_laststatval = -1; \
2488 PL_laststype = OP_STAT; \
2489 PL_maxscream = -1; \
2490 PL_maxsysfd = MAXSYSFD; \
2491 PL_statname = Nullsv; \
2492 PL_tmps_floor = -1; \
2493 PL_tmps_ix = -1; \
2494 PL_op_mask = NULL; \
6b88bc9c
GS
2495 PL_laststatval = -1; \
2496 PL_laststype = OP_STAT; \
2497 PL_mess_sv = Nullsv; \
2498 PL_splitstr = " "; \
2499 PL_generation = 100; \
2500 PL_exitlist = NULL; \
2501 PL_exitlistlen = 0; \
2502 PL_regindent = 0; \
2503 PL_in_clean_objs = FALSE; \
2504 PL_in_clean_all = FALSE; \
2505 PL_profiledata = NULL; \
2506 PL_rsfp = Nullfp; \
2507 PL_rsfp_filters = Nullav; \
24d3c518 2508 PL_dirty = FALSE; \
cb68f92d 2509 } STMT_END
9666903d 2510 I_REINIT;
066ef5b5
GS
2511#else
2512# ifdef MULTIPLICITY
2513# define PERLVAR(var,type)
51371543 2514# define PERLVARA(var,n,type)
cea2e8a9 2515# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2516# if defined(USE_THREADS)
2517# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2518# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2519# else /* !USE_THREADS */
2520# define PERLVARI(var,type,init) aTHX->var = init;
2521# define PERLVARIC(var,type,init) aTHX->var = init;
2522# endif /* USE_THREADS */
cea2e8a9 2523# else
c5be433b
GS
2524# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2525# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2526# endif
066ef5b5
GS
2527# include "intrpvar.h"
2528# ifndef USE_THREADS
2529# include "thrdvar.h"
2530# endif
2531# undef PERLVAR
51371543 2532# undef PERLVARA
066ef5b5
GS
2533# undef PERLVARI
2534# undef PERLVARIC
3967c732 2535# else
066ef5b5 2536# define PERLVAR(var,type)
51371543 2537# define PERLVARA(var,n,type)
533c011a
NIS
2538# define PERLVARI(var,type,init) PL_##var = init;
2539# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2540# include "intrpvar.h"
2541# ifndef USE_THREADS
2542# include "thrdvar.h"
2543# endif
2544# undef PERLVAR
51371543 2545# undef PERLVARA
066ef5b5
GS
2546# undef PERLVARI
2547# undef PERLVARIC
2548# endif
cb68f92d
GS
2549#endif
2550
cb68f92d
GS
2551}
2552
76e3520e 2553STATIC void
cea2e8a9 2554S_init_main_stash(pTHX)
79072805 2555{
463ee0b2 2556 GV *gv;
6e72f9df
PP
2557
2558 /* Note that strtab is a rather special HV. Assumptions are made
2559 about not iterating on it, and not adding tie magic to it.
2560 It is properly deallocated in perl_destruct() */
3280af22 2561 PL_strtab = newHV();
5f08fbcd
GS
2562#ifdef USE_THREADS
2563 MUTEX_INIT(&PL_strtab_mutex);
2564#endif
3280af22
NIS
2565 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2566 hv_ksplit(PL_strtab, 512);
ac27b0f5 2567
3280af22 2568 PL_curstash = PL_defstash = newHV();
79cb57f6 2569 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2570 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2571 SvREFCNT_dec(GvHV(gv));
3280af22 2572 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2573 SvREADONLY_on(gv);
3280af22
NIS
2574 HvNAME(PL_defstash) = savepv("main");
2575 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2576 GvMULTI_on(PL_incgv);
2577 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2578 GvMULTI_on(PL_hintgv);
2579 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2580 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2581 GvMULTI_on(PL_errgv);
2582 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2583 GvMULTI_on(PL_replgv);
cea2e8a9 2584 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2585 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2586 sv_setpvn(ERRSV, "", 0);
3280af22 2587 PL_curstash = PL_defstash;
11faa288 2588 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2589 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2590 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2591 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2592 /* We must init $/ before switches are processed. */
864dbfa3 2593 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2594}
2595
76e3520e 2596STATIC void
cea2e8a9 2597S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2598{
6c4ab083 2599 *fdscript = -1;
79072805 2600
3280af22
NIS
2601 if (PL_e_script) {
2602 PL_origfilename = savepv("-e");
96436eeb 2603 }
6c4ab083
GS
2604 else {
2605 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2606 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2607
2608 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2609 char *s = scriptname + 8;
2610 *fdscript = atoi(s);
2611 while (isDIGIT(*s))
2612 s++;
2613 if (*s) {
2614 scriptname = savepv(s + 1);
3280af22
NIS
2615 Safefree(PL_origfilename);
2616 PL_origfilename = scriptname;
6c4ab083
GS
2617 }
2618 }
2619 }
2620
f4dd75d9
GS
2621#ifdef USE_ITHREADS
2622 Safefree(CopFILE(PL_curcop));
2623#else
2624 SvREFCNT_dec(CopFILEGV(PL_curcop));
2625#endif
57843af0 2626 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2627 if (strEQ(PL_origfilename,"-"))
79072805 2628 scriptname = "";
01f988be 2629 if (*fdscript >= 0) {
3280af22 2630 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2631#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2632 if (PL_rsfp)
2633 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2634#endif
2635 }
3280af22 2636 else if (PL_preprocess) {
46fc3d4c 2637 char *cpp_cfg = CPPSTDIN;
79cb57f6 2638 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2639 SV *cmd = NEWSV(0,0);
2640
2641 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2642 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2643 sv_catpv(cpp, cpp_cfg);
79072805 2644
0df16ed7 2645 sv_catpvn(sv, "-I", 2);
fed7345c 2646 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2647
14953ddc
MB
2648 DEBUG_P(PerlIO_printf(Perl_debug_log,
2649 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2650 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2651#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2652 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2653sed %s -e \"/^[^#]/b\" \
2654 -e \"/^#[ ]*include[ ]/b\" \
2655 -e \"/^#[ ]*define[ ]/b\" \
2656 -e \"/^#[ ]*if[ ]/b\" \
2657 -e \"/^#[ ]*ifdef[ ]/b\" \
2658 -e \"/^#[ ]*ifndef[ ]/b\" \
2659 -e \"/^#[ ]*else/b\" \
2660 -e \"/^#[ ]*elif[ ]/b\" \
2661 -e \"/^#[ ]*undef[ ]/b\" \
2662 -e \"/^#[ ]*endif/b\" \
2663 -e \"s/^#.*//\" \
894356b3 2664 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2665 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2666#else
092bebab 2667# ifdef __OPEN_VM
cea2e8a9 2668 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2669%s %s -e '/^[^#]/b' \
2670 -e '/^#[ ]*include[ ]/b' \
2671 -e '/^#[ ]*define[ ]/b' \
2672 -e '/^#[ ]*if[ ]/b' \
2673 -e '/^#[ ]*ifdef[ ]/b' \
2674 -e '/^#[ ]*ifndef[ ]/b' \
2675 -e '/^#[ ]*else/b' \
2676 -e '/^#[ ]*elif[ ]/b' \
2677 -e '/^#[ ]*undef[ ]/b' \
2678 -e '/^#[ ]*endif/b' \
2679 -e 's/^[ ]*#.*//' \
894356b3 2680 %s | %"SVf" %"SVf" %s",
092bebab 2681# else
cea2e8a9 2682 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2683%s %s -e '/^[^#]/b' \
2684 -e '/^#[ ]*include[ ]/b' \
2685 -e '/^#[ ]*define[ ]/b' \
2686 -e '/^#[ ]*if[ ]/b' \
2687 -e '/^#[ ]*ifdef[ ]/b' \
2688 -e '/^#[ ]*ifndef[ ]/b' \
2689 -e '/^#[ ]*else/b' \
2690 -e '/^#[ ]*elif[ ]/b' \
2691 -e '/^#[ ]*undef[ ]/b' \
2692 -e '/^#[ ]*endif/b' \
2693 -e 's/^[ ]*#.*//' \
894356b3 2694 %s | %"SVf" -C %"SVf" %s",
092bebab 2695# endif
79072805
LW
2696#ifdef LOC_SED
2697 LOC_SED,
2698#else
2699 "sed",
2700#endif
3280af22 2701 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2702#endif
46fc3d4c 2703 scriptname, cpp, sv, CPPMINUS);
3280af22 2704 PL_doextract = FALSE;
79072805 2705#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2706 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2707#ifdef HAS_SETEUID
b28d0864 2708 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2709#else
2710#ifdef HAS_SETREUID
b28d0864 2711 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2712#else
2713#ifdef HAS_SETRESUID
b28d0864 2714 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2715#else
b28d0864 2716 PerlProc_setuid(PL_uid);
79072805
LW
2717#endif
2718#endif
85e6fe83 2719#endif
b28d0864 2720 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2721 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2722 }
2723#endif /* IAMSUID */
3280af22 2724 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2725 SvREFCNT_dec(cmd);
2726 SvREFCNT_dec(cpp);
79072805
LW
2727 }
2728 else if (!*scriptname) {
bbce6d69 2729 forbid_setid("program input from stdin");
3280af22 2730 PL_rsfp = PerlIO_stdin();
79072805 2731 }
96436eeb 2732 else {
3280af22 2733 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2734#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2735 if (PL_rsfp)
2736 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2737#endif
2738 }
3280af22 2739 if (!PL_rsfp) {
13281fa4 2740#ifdef DOSUID
a687059c 2741#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2742 if (PL_euid &&
cc49e20b 2743 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2744 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2745 {
46fc3d4c 2746 /* try again */
a7cb1f99 2747 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2748 (int)PERL_REVISION, (int)PERL_VERSION,
2749 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2750 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2751 }
2752#endif
2753#endif
584d69ec
JH
2754#ifdef IAMSUID
2755 errno = EPERM;
2756 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2757 Strerror(errno));
2758#else
cea2e8a9 2759 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2760 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2761#endif
13281fa4 2762 }
79072805 2763}
8d063cd8 2764
7b89560d
JH
2765/* Mention
2766 * I_SYSSTATVFS HAS_FSTATVFS
2767 * I_SYSMOUNT
c890dc6c 2768 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2769 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2770 * here so that metaconfig picks them up. */
2771
104d25b7 2772#ifdef IAMSUID
864dbfa3 2773STATIC int
e688b231 2774S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2775{
0545a864
JH
2776 int check_okay = 0; /* able to do all the required sys/libcalls */
2777 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2778/*
ad27e871 2779 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2780 * fstatvfs() is UNIX98.
0545a864 2781 * fstatfs() is 4.3 BSD.
ad27e871 2782 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2783 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2784 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2785 */
2786
6439433f
JH
2787#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2788
2789# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2790 defined(HAS_FSTATVFS)
2791# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2792 struct statvfs stfs;
6439433f 2793
104d25b7
JH
2794 check_okay = fstatvfs(fd, &stfs) == 0;
2795 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2796# endif /* fstatvfs */
ac27b0f5 2797
6439433f
JH
2798# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2799 defined(PERL_MOUNT_NOSUID) && \
2800 defined(HAS_FSTATFS) && \
2801 defined(HAS_STRUCT_STATFS) && \
2802 defined(HAS_STRUCT_STATFS_F_FLAGS)
2803# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2804 struct statfs stfs;
6439433f 2805
104d25b7 2806 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2807 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2808# endif /* fstatfs */
2809
2810# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2811 defined(PERL_MOUNT_NOSUID) && \
2812 defined(HAS_FSTAT) && \
2813 defined(HAS_USTAT) && \
2814 defined(HAS_GETMNT) && \
2815 defined(HAS_STRUCT_FS_DATA) && \
2816 defined(NOSTAT_ONE)
2817# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2818 struct stat fdst;
6439433f 2819
0545a864 2820 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2821 struct ustat us;
2822 if (ustat(fdst.st_dev, &us) == 0) {
2823 struct fs_data fsd;
2824 /* NOSTAT_ONE here because we're not examining fields which
2825 * vary between that case and STAT_ONE. */
ad27e871 2826 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2827 size_t cmplen = sizeof(us.f_fname);
2828 if (sizeof(fsd.fd_req.path) < cmplen)
2829 cmplen = sizeof(fsd.fd_req.path);
2830 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2831 fdst.st_dev == fsd.fd_req.dev) {
2832 check_okay = 1;
2833 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2834 }
2835 }
2836 }
2837 }
0545a864 2838 }
6439433f
JH
2839# endif /* fstat+ustat+getmnt */
2840
2841# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2842 defined(HAS_GETMNTENT) && \
2843 defined(HAS_HASMNTOPT) && \
2844 defined(MNTOPT_NOSUID)
2845# define FD_ON_NOSUID_CHECK_OKAY
2846 FILE *mtab = fopen("/etc/mtab", "r");
2847 struct mntent *entry;
2848 struct stat stb, fsb;
104d25b7
JH
2849
2850 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2851 while (entry = getmntent(mtab)) {
2852 if (stat(entry->mnt_dir, &fsb) == 0
2853 && fsb.st_dev == stb.st_dev)
2854 {
2855 /* found the filesystem */
2856 check_okay = 1;
2857 if (hasmntopt(entry, MNTOPT_NOSUID))
2858 on_nosuid = 1;
2859 break;
2860 } /* A single fs may well fail its stat(). */
2861 }
104d25b7
JH
2862 }
2863 if (mtab)
6439433f
JH
2864 fclose(mtab);
2865# endif /* getmntent+hasmntopt */
0545a864 2866
ac27b0f5 2867 if (!check_okay)
0545a864 2868 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2869 return on_nosuid;
2870}
2871#endif /* IAMSUID */
2872
76e3520e 2873STATIC void
cea2e8a9 2874S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2875{
155aba94 2876#ifdef IAMSUID
96436eeb 2877 int which;
155aba94 2878#endif
96436eeb 2879
13281fa4
LW
2880 /* do we need to emulate setuid on scripts? */
2881
2882 /* This code is for those BSD systems that have setuid #! scripts disabled
2883 * in the kernel because of a security problem. Merely defining DOSUID
2884 * in perl will not fix that problem, but if you have disabled setuid
2885 * scripts in the kernel, this will attempt to emulate setuid and setgid
2886 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2887 * root version must be called suidperl or sperlN.NNN. If regular perl
2888 * discovers that it has opened a setuid script, it calls suidperl with
2889 * the same argv that it had. If suidperl finds that the script it has
2890 * just opened is NOT setuid root, it sets the effective uid back to the
2891 * uid. We don't just make perl setuid root because that loses the
2892 * effective uid we had before invoking perl, if it was different from the
2893 * uid.
13281fa4
LW
2894 *
2895 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2896 * be defined in suidperl only. suidperl must be setuid root. The
2897 * Configure script will set this up for you if you want it.
2898 */
a687059c 2899
13281fa4 2900#ifdef DOSUID
6e72f9df 2901 char *s, *s2;
a0d0e21e 2902
b28d0864 2903 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2904 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2905 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2906 I32 len;
2d8e6c8d 2907 STRLEN n_a;
13281fa4 2908
a687059c 2909#ifdef IAMSUID
fe14fcc3 2910#ifndef HAS_SETREUID
a687059c
LW
2911 /* On this access check to make sure the directories are readable,
2912 * there is actually a small window that the user could use to make
2913 * filename point to an accessible directory. So there is a faint
2914 * chance that someone could execute a setuid script down in a
2915 * non-accessible directory. I don't know what to do about that.
2916 * But I don't think it's too important. The manual lies when
2917 * it says access() is useful in setuid programs.
2918 */
cc49e20b 2919 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2920 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2921#else
2922 /* If we can swap euid and uid, then we can determine access rights
2923 * with a simple stat of the file, and then compare device and
2924 * inode to make sure we did stat() on the same file we opened.
2925 * Then we just have to make sure he or she can execute it.
2926 */
2927 {
2928 struct stat tmpstatbuf;
2929
85e6fe83
LW
2930 if (
2931#ifdef HAS_SETREUID
b28d0864 2932 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2933#else
2934# if HAS_SETRESUID
b28d0864 2935 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2936# endif
85e6fe83 2937#endif
b28d0864 2938 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2939 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2940 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2941 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2942#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2943 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2944 Perl_croak(aTHX_ "Permission denied");
104d25b7 2945#endif
b28d0864
NIS
2946 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2947 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2948 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2949 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2950 }
85e6fe83
LW
2951 if (
2952#ifdef HAS_SETREUID
b28d0864 2953 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2954#else
2955# if defined(HAS_SETRESUID)
b28d0864 2956 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2957# endif
85e6fe83 2958#endif
b28d0864 2959 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2960 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2961 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2962 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2963 }
fe14fcc3 2964#endif /* HAS_SETREUID */
a687059c
LW
2965#endif /* IAMSUID */
2966
b28d0864 2967 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2968 Perl_croak(aTHX_ "Permission denied");
b28d0864 2969 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2970 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2971 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2972 CopLINE_inc(PL_curcop);
6b88bc9c 2973 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2974 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2975 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2976 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2977 if (*s == ' ') s++;
45d8adaa 2978 while (!isSPACE(*s)) s++;
2d8e6c8d 2979 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2980 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2981 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2982 Perl_croak(aTHX_ "Not a perl script");
a687059c 2983 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2984 /*
2985 * #! arg must be what we saw above. They can invoke it by
2986 * mentioning suidperl explicitly, but they may not add any strange
2987 * arguments beyond what #! says if they do invoke suidperl that way.
2988 */
2989 len = strlen(validarg);
2990 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2991 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2992 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
2993
2994#ifndef IAMSUID
b28d0864
NIS
2995 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2996 PL_euid == PL_statbuf.st_uid)
2997 if (!PL_do_undump)
cea2e8a9 2998 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
2999FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3000#endif /* IAMSUID */
13281fa4 3001
b28d0864
NIS
3002 if (PL_euid) { /* oops, we're not the setuid root perl */
3003 (void)PerlIO_close(PL_rsfp);
13281fa4 3004#ifndef IAMSUID
46fc3d4c 3005 /* try again */
a7cb1f99 3006 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3007 (int)PERL_REVISION, (int)PERL_VERSION,
3008 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3009#endif
cea2e8a9 3010 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3011 }
3012
b28d0864 3013 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3014#ifdef HAS_SETEGID
b28d0864 3015 (void)setegid(PL_statbuf.st_gid);
a687059c 3016#else
fe14fcc3 3017#ifdef HAS_SETREGID
b28d0864 3018 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3019#else
3020#ifdef HAS_SETRESGID
b28d0864 3021 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3022#else
b28d0864 3023 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3024#endif
3025#endif
85e6fe83 3026#endif
b28d0864 3027 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3028 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3029 }
b28d0864
NIS
3030 if (PL_statbuf.st_mode & S_ISUID) {
3031 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3032#ifdef HAS_SETEUID
b28d0864 3033 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3034#else
fe14fcc3 3035#ifdef HAS_SETREUID
b28d0864 3036 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3037#else
3038#ifdef HAS_SETRESUID
b28d0864 3039 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3040#else
b28d0864 3041 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3042#endif
3043#endif
85e6fe83 3044#endif
b28d0864 3045 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3046 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3047 }
b28d0864 3048 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3049#ifdef HAS_SETEUID
b28d0864 3050 (void)seteuid((Uid_t)PL_uid);
a687059c 3051#else
fe14fcc3 3052#ifdef HAS_SETREUID
b28d0864 3053 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3054#else
85e6fe83 3055#ifdef HAS_SETRESUID
b28d0864 3056 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3057#else
b28d0864 3058 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3059#endif
a687059c
LW
3060#endif
3061#endif
b28d0864 3062 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3063 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3064 }
748a9306 3065 init_ids();
b28d0864 3066 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3067 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3068 }
3069#ifdef IAMSUID
6b88bc9c 3070 else if (PL_preprocess)
cea2e8a9 3071 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3072 else if (fdscript >= 0)
cea2e8a9 3073 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3074 else
cea2e8a9 3075 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3076
3077 /* We absolutely must clear out any saved ids here, so we */
3078 /* exec the real perl, substituting fd script for scriptname. */
3079 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3080 PerlIO_rewind(PL_rsfp);
3081 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3082 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3083 if (!PL_origargv[which])
cea2e8a9
GS
3084 Perl_croak(aTHX_ "Permission denied");
3085 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3086 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3087#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3088 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3089#endif
a7cb1f99 3090 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3091 (int)PERL_REVISION, (int)PERL_VERSION,
3092 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3093 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3094#endif /* IAMSUID */
a687059c 3095#else /* !DOSUID */
3280af22 3096 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3097#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3098 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3099 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3100 ||
b28d0864 3101 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3102 )
b28d0864 3103 if (!PL_do_undump)
cea2e8a9 3104 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3105FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3106#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3107 /* not set-id, must be wrapped */
a687059c 3108 }
13281fa4 3109#endif /* DOSUID */
79072805 3110}
13281fa4 3111
76e3520e 3112STATIC void
cea2e8a9 3113S_find_beginning(pTHX)
79072805 3114{
6e72f9df 3115 register char *s, *s2;
33b78306
LW
3116
3117 /* skip forward in input to the real script? */
3118
bbce6d69 3119 forbid_setid("-x");
bf4acbe4 3120#ifdef MACOS_TRADITIONAL
084592ab 3121 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3122
bf4acbe4
GS
3123 while (PL_doextract || gMacPerl_AlwaysExtract) {
3124 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3125 if (!gMacPerl_AlwaysExtract)
3126 Perl_croak(aTHX_ "No Perl script found in input\n");
3127
3128 if (PL_doextract) /* require explicit override ? */
3129 if (!OverrideExtract(PL_origfilename))
3130 Perl_croak(aTHX_ "User aborted script\n");
3131 else
3132 PL_doextract = FALSE;
3133
3134 /* Pater peccavi, file does not have #! */
3135 PerlIO_rewind(PL_rsfp);
ac27b0f5 3136
bf4acbe4
GS
3137 break;
3138 }
3139#else
3280af22
NIS
3140 while (PL_doextract) {
3141 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3142 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3143#endif
4f0c37ba
IZ
3144 s2 = s;
3145 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3146 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3147 PL_doextract = FALSE;
6e72f9df
PP
3148 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3149 s2 = s;
3150 while (*s == ' ' || *s == '\t') s++;
3151 if (*s++ == '-') {
3152 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3153 if (strnEQ(s2-4,"perl",4))
3154 /*SUPPRESS 530*/
155aba94
GS
3155 while ((s = moreswitches(s)))
3156 ;
33b78306 3157 }
95e8664e
CN
3158#ifdef MACOS_TRADITIONAL
3159 break;
3160#endif
83025b21
LW
3161 }
3162 }
3163}
3164
afe37c7d 3165
76e3520e 3166STATIC void
cea2e8a9 3167S_init_ids(pTHX)
352d5a3a 3168{
d8eceb89
JH
3169 PL_uid = PerlProc_getuid();
3170 PL_euid = PerlProc_geteuid();
3171 PL_gid = PerlProc_getgid();
3172 PL_egid = PerlProc_getegid();
748a9306 3173#ifdef VMS
b28d0864
NIS
3174 PL_uid |= PL_gid << 16;
3175 PL_euid |= PL_egid << 16;
748a9306 3176#endif
3280af22 3177 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3178}
79072805 3179
76e3520e 3180STATIC void
cea2e8a9 3181S_forbid_setid(pTHX_ char *s)
bbce6d69 3182{
3280af22 3183 if (PL_euid != PL_uid)
cea2e8a9 3184 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3185 if (PL_egid != PL_gid)
cea2e8a9 3186 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3187}
3188
1ee4443e
IZ
3189void
3190Perl_init_debugger(pTHX)
748a9306 3191{
1ee4443e
IZ
3192 HV *ostash = PL_curstash;
3193
3280af22
NIS
3194 PL_curstash = PL_debstash;
3195 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3196 AvREAL_off(PL_dbargs);
3197 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3198 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3199 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3200 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3201 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3202 sv_setiv(PL_DBsingle, 0);
3280af22 3203 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3204 sv_setiv(PL_DBtrace, 0);
3280af22 3205 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3206 sv_setiv(PL_DBsignal, 0);
1ee4443e 3207 PL_curstash = ostash;
352d5a3a
LW
3208}
3209
2ce36478
SM
3210#ifndef STRESS_REALLOC
3211#define REASONABLE(size) (size)
3212#else
3213#define REASONABLE(size) (1) /* unreasonable */
3214#endif
3215
11343788 3216void
cea2e8a9 3217Perl_init_stacks(pTHX)
79072805 3218{
e336de0d 3219 /* start with 128-item stack and 8K cxstack */
3280af22 3220 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3221 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3222 PL_curstackinfo->si_type = PERLSI_MAIN;
3223 PL_curstack = PL_curstackinfo->si_stack;
3224 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3225
3280af22
NIS
3226 PL_stack_base = AvARRAY(PL_curstack);
3227 PL_stack_sp = PL_stack_base;
3228 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3229
3280af22
NIS
3230 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3231 PL_tmps_floor = -1;
3232 PL_tmps_ix = -1;
3233 PL_tmps_max = REASONABLE(128);
8990e307 3234
3280af22
NIS
3235 New(54,PL_markstack,REASONABLE(32),I32);
3236 PL_markstack_ptr = PL_markstack;
3237 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3238
ce2f7c3b 3239 SET_MARK_OFFSET;
e336de0d 3240
3280af22
NIS
3241 New(54,PL_scopestack,REASONABLE(32),I32);
3242 PL_scopestack_ix = 0;
3243 PL_scopestack_max = REASONABLE(32);
79072805 3244
3280af22
NIS
3245 New(54,PL_savestack,REASONABLE(128),ANY);
3246 PL_savestack_ix = 0;
3247 PL_savestack_max = REASONABLE(128);
79072805 3248
3280af22
NIS
3249 New(54,PL_retstack,REASONABLE(16),OP*);
3250 PL_retstack_ix = 0;
3251 PL_retstack_max = REASONABLE(16);
378cc40b 3252}
33b78306 3253
2ce36478
SM
3254#undef REASONABLE
3255
76e3520e 3256STATIC void
cea2e8a9 3257S_nuke_stacks(pTHX)
6e72f9df 3258{
3280af22
NIS
3259 while (PL_curstackinfo->si_next)
3260 PL_curstackinfo = PL_curstackinfo->si_next;
3261 while (PL_curstackinfo) {
3262 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3263 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3264 Safefree(PL_curstackinfo->si_cxstack);
3265 Safefree(PL_curstackinfo);
3266 PL_curstackinfo = p;
e336de0d 3267 }
3280af22
NIS
3268 Safefree(PL_tmps_stack);
3269 Safefree(PL_markstack);
3270 Safefree(PL_scopestack);
3271 Safefree(PL_savestack);
3272 Safefree(PL_retstack);
378cc40b 3273}
33b78306 3274
76e3520e 3275#ifndef PERL_OBJECT
760ac839 3276static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3277#endif
7aa04957 3278
76e3520e 3279STATIC void
cea2e8a9 3280S_init_lexer(pTHX)
8990e307 3281{
76e3520e
GS
3282#ifdef PERL_OBJECT
3283 PerlIO *tmpfp;
3284#endif
3280af22
NIS
3285 tmpfp = PL_rsfp;
3286 PL_rsfp = Nullfp;
3287 lex_start(PL_linestr);
3288 PL_rsfp = tmpfp;
79cb57f6 3289 PL_subname = newSVpvn("main",4);
8990e307
LW
3290}
3291
76e3520e 3292STATIC void
cea2e8a9 3293S_init_predump_symbols(pTHX)
45d8adaa 3294{
93a17b20 3295 GV *tmpgv;
af8c498a 3296 IO *io;
79072805 3297
864dbfa3 3298 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3299 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3300 GvMULTI_on(PL_stdingv);
af8c498a 3301 io = GvIOp(PL_stdingv);
a04651f4 3302 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3303 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3304 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3305 GvMULTI_on(tmpgv);
af8c498a 3306 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3307
85e6fe83 3308 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3309 GvMULTI_on(tmpgv);
af8c498a 3310 io = GvIOp(tmpgv);
a04651f4 3311 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3312 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3313 setdefout(tmpgv);
adbc6bb1 3314 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3315 GvMULTI_on(tmpgv);
af8c498a 3316 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3317
bf49b057
GS
3318 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3319 GvMULTI_on(PL_stderrgv);
3320 io = GvIOp(PL_stderrgv);
a04651f4 3321 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3322 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3323 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3324 GvMULTI_on(tmpgv);
af8c498a 3325 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3326
3280af22 3327 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3328
bf4acbe4
GS
3329 if (PL_osname)
3330 Safefree(PL_osname);
3331 PL_osname = savepv(OSNAME);
79072805 3332}
33b78306 3333
76e3520e 3334STATIC void
cea2e8a9 3335S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3336{
79072805
LW
3337 char *s;
3338 SV *sv;
3339 GV* tmpgv;
9cbac4c7 3340#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3341 char **dup_env_base = 0;
103a7189 3342 int dup_env_count = 0;
9cbac4c7 3343#endif
fe14fcc3 3344
79072805 3345 argc--,argv++; /* skip name of script */
3280af22 3346 if (PL_doswitches) {
79072805
LW
3347 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3348 if (!argv[0][1])
3349 break;
379d538a 3350 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3351 argc--,argv++;
3352 break;
3353 }
155aba94 3354 if ((s = strchr(argv[0], '='))) {
79072805 3355 *s++ = '\0';
85e6fe83 3356 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3357 }
3358 else
85e6fe83 3359 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3360 }
79072805 3361 }
3280af22
NIS
3362 PL_toptarget = NEWSV(0,0);
3363 sv_upgrade(PL_toptarget, SVt_PVFM);
3364 sv_setpvn(PL_toptarget, "", 0);
3365 PL_bodytarget = NEWSV(0,0);
3366 sv_upgrade(PL_bodytarget, SVt_PVFM);
3367 sv_setpvn(PL_bodytarget, "", 0);
3368 PL_formtarget = PL_bodytarget;
79072805 3369
bbce6d69 3370 TAINT;
155aba94 3371 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3372#ifdef MACOS_TRADITIONAL
3373 /* $0 is not majick on a Mac */
3374 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3375#else
3280af22 3376 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3377 magicname("0", "0", 1);
bf4acbe4 3378#endif
79072805 3379 }
155aba94 3380 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3381#ifdef OS2
23da6c43 3382 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3383#else
3280af22 3384 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3385#endif
155aba94 3386 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3387 GvMULTI_on(PL_argvgv);
3388 (void)gv_AVadd(PL_argvgv);
3389 av_clear(GvAVn(PL_argvgv));
79072805 3390 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3391 SV *sv = newSVpv(argv[0],0);
3392 av_push(GvAVn(PL_argvgv),sv);
3393 if (PL_widesyscalls)
e84ff256 3394 (void)sv_utf8_decode(sv);
79072805
LW
3395 }
3396 }
155aba94 3397 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3398 HV *hv;
3280af22
NIS
3399 GvMULTI_on(PL_envgv);
3400 hv = GvHVn(PL_envgv);
14befaf4 3401 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3402#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3403 /* Note that if the supplied env parameter is actually a copy
3404 of the global environ then it may now point to free'd memory
3405 if the environment has been modified since. To avoid this
3406 problem we treat env==NULL as meaning 'use the default'
3407 */
3408 if (!env)
3409 env = environ;
5aabfad6 3410 if (env != environ)
79072805 3411 environ[0] = Nullch;
103a7189
JH
3412#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3413 {
3414 char **env_base;
9041c2e3 3415 for (env_base = env; *env; env++)
103a7189
JH
3416 dup_env_count++;
3417 if ((dup_env_base = (char **)
480bfd1e 3418 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH
3419 char **dup_env;
3420 for (env = env_base, dup_env = dup_env_base;
3421 *env;
480bfd1e
JH
3422 env++, dup_env++) {
3423 /* With environ one needs to use safesysmalloc(). */
3424 *dup_env = safesysmalloc(strlen(*env) + 1);
3425 (void)strcpy(*dup_env, *env);
3426 }
103a7189
JH
3427 *dup_env = Nullch;
3428 env = dup_env_base;
3429 } /* else what? */
3430 }
3431#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3432 for (; *env; env++) {
93a17b20 3433 if (!(s = strchr(*env,'=')))
79072805
LW
3434 continue;
3435 *s++ = '\0';
60ce6247 3436#if defined(MSDOS)
137443ea
PP
3437 (void)strupr(*env);
3438#endif
79072805
LW
3439 sv = newSVpv(s--,0);
3440 (void)hv_store(hv, *env, s - *env, sv, 0);
3441 *s = '=';
fe14fcc3 3442 }
480bfd1e 3443#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH
3444 if (dup_env_base) {
3445 char **dup_env;
3446 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH
3447 safesysfree(*dup_env);
3448 safesysfree(dup_env_base);
103a7189 3449 }
7e0f6a1f 3450#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3451#endif /* USE_ENVIRON_ARRAY */
79072805 3452 }
bbce6d69 3453 TAINT_NOT;
155aba94 3454 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3455 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());