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a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
0cb96387
GS		 28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS		 43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS		 50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS		 67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS		 73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS		 85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS		 87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS		 94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS		 99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS		 102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS		 104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS		 106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS		 112#endif
113
32e30700
GS		 114 return my_perl;
115}
116#else
954c1994
GS		 117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS		 140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1
MB		 151#ifdef USE_THREADS
152 int i;
153#ifndef FAKE_THREADS
e1f15930 154 struct perl_thread *thr = NULL;
a863c7d1
MB		 155#endif /* FAKE_THREADS */
156#endif /* USE_THREADS */
ba869deb 157
8990e307 158#ifdef MULTIPLICITY
54aff467 159 init_interp();
ac27b0f5 160 PL_perl_destruct_level = 1;
54aff467
GS		 161#else
162 if (PL_perl_destruct_level > 0)
163 init_interp();
164#endif
165
33f46ff6 166 /* Init the real globals (and main thread)? */
3280af22 167 if (!PL_linestr) {
1feb2720 168#ifdef USE_THREADS
533c011a 169 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 170 /*
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
173 */
533c011a
NIS		 174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
ba869deb 178# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 179 MUTEX_INIT(&PL_svref_mutex);
ba869deb 180# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 181
5ff3f7a4 182 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 185
199100c8 186 thr = init_main_thread();
11343788
MB		 187#endif /* USE_THREADS */
188
14dd3ad8 189#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 191#endif
312caa8e 192
2aea9f8a
GS		 193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194
3280af22
NIS		 195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 197
3280af22 198 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 199 /* set read-only and try to insure than we wont see REFCNT==0
200 very often */
201
3280af22
NIS		 202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 204
3280af22
NIS		 205 sv_setpv(&PL_sv_no,PL_No);
206 SvNV(&PL_sv_no);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 209
3280af22
NIS		 210 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvNV(&PL_sv_yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 214 }
79072805 215
76e3520e
GS		 216#ifdef PERL_OBJECT
217 /* TODO: */
6b88bc9c 218 /* PL_sighandlerp = sighandler; */
76e3520e 219#else
cea2e8a9 220 PL_sighandlerp = Perl_sighandler;
76e3520e 221#endif
3280af22 222 PL_pidstatus = newHV();
44a8e56a 223
79072805
LW		 224#ifdef MSDOS
225 /*
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
228 * filehandles.
229 */
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
232#endif
233 }
234
79cb57f6 235 PL_nrs = newSVpvn("\n", 1);
3280af22 236 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 237
cea2e8a9 238 init_stacks();
79072805 239
748a9306 240 init_ids();
3280af22 241 PL_lex_state = LEX_NOTPARSING;
a5f75d66 242
312caa8e 243 JMPENV_BOOTSTRAP;
f86702cc 244 STATUS_ALL_SUCCESS;
245
0672f40e 246 init_i18nl10n(1);
36477c24 247 SET_NUMERIC_STANDARD();
0b5b802d 248
a7cb1f99
GS		 249 {
250 U8 *s;
251 PL_patchlevel = NEWSV(0,4);
155aba94 252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 255 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 256 /* Build version strings using "native" characters */
257 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
258 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
259 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 260 *s = '\0';
261 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
262 SvPOK_on(PL_patchlevel);
263 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
264 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 265#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 266 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 267#endif
a7cb1f99
GS		 268 ;
269 SvNOK_on(PL_patchlevel); /* dual valued */
270 SvUTF8_on(PL_patchlevel);
271 SvREADONLY_on(PL_patchlevel);
272 }
79072805 273
ab821d7f 274#if defined(LOCAL_PATCH_COUNT)
3280af22 275 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 276#endif
277
52853b95
GS		 278#ifdef HAVE_INTERP_INTERN
279 sys_intern_init();
280#endif
281
4b556e6c 282 PerlIO_init(); /* Hook to IO system */
760ac839 283
3280af22
NIS		 284 PL_fdpid = newAV(); /* for remembering popen pids by fd */
285 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 286 PL_errors = newSVpvn("",0);
8990e307 287
8990e307 288 ENTER;
79072805
LW		 289}
290
954c1994
GS		 291/*
292=for apidoc perl_destruct
293
294Shuts down a Perl interpreter. See L<perlembed>.
295
296=cut
297*/
298
79072805 299void
0cb96387 300perl_destruct(pTHXx)
79072805 301{
748a9306 302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 303 HV *hv;
1f2bfc8a 304#ifdef USE_THREADS
33f46ff6 305 Thread t;
cea2e8a9 306 dTHX;
1f2bfc8a 307#endif /* USE_THREADS */
8990e307 308
7766f137
GS		 309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
311
11343788 312#ifdef USE_THREADS
0f15f207 313#ifndef FAKE_THREADS
8023c3ce
MB		 314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 retry_cleanup:
533c011a 316 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 317 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 318 "perl_destruct: waiting for %d threads...\n",
533c011a 319 PL_nthreads - 1));
33f46ff6 320 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
323 AV *av;
c7848ba1 324 case THRf_ZOMBIE:
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
533c011a 329 PL_nthreads--;
8023c3ce
MB		 330 /*
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
334 * all over again.
335 */
533c011a 336 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 337 JOIN(t, &av);
605e5515 338 SvREFCNT_dec((SV*)av);
bf49b057 339 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 340 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 341 goto retry_cleanup;
c7848ba1 342 case THRf_R_JOINABLE:
bf49b057 343 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 346 /*
c7848ba1
MB		 347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
351 */
533c011a 352 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 353 DETACH(t);
354 MUTEX_UNLOCK(&t->mutex);
8023c3ce 355 goto retry_cleanup;
c7848ba1 356 default:
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 358 "perl_destruct: ignoring %p (state %u)\n",
359 t, ThrSTATE(t)));
360 MUTEX_UNLOCK(&t->mutex);
c7848ba1 361 /* fall through and out */
33f46ff6
MB		 362 }
363 }
8023c3ce
MB		 364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 367 while (PL_nthreads > 1)
11343788 368 {
bf49b057 369 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 370 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 371 PL_nthreads - 1));
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 373 }
374 /* At this point, we're the last thread */
533c011a 375 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
b57a092c 379 PL_nthreads--;
0f15f207 380#endif /* !defined(FAKE_THREADS) */
11343788
MB		 381#endif /* USE_THREADS */
382
3280af22 383 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 384#ifdef DEBUGGING
385 {
386 char *s;
155aba94 387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 388 int i = atoi(s);
389 if (destruct_level < i)
390 destruct_level = i;
391 }
4633a7c4
LW		 392 }
393#endif
394
8990e307 395 LEAVE;
a0d0e21e
LW		 396 FREETMPS;
397
13621cfb 398
ff0cee69 399 /* We must account for everything. */
400
401 /* Destroy the main CV and syntax tree */
3280af22
NIS		 402 if (PL_main_root) {
403 PL_curpad = AvARRAY(PL_comppad);
404 op_free(PL_main_root);
405 PL_main_root = Nullop;
a0d0e21e 406 }
3280af22
NIS		 407 PL_curcop = &PL_compiling;
408 PL_main_start = Nullop;
409 SvREFCNT_dec(PL_main_cv);
410 PL_main_cv = Nullcv;
24d3c518 411 PL_dirty = TRUE;
ff0cee69 412
13621cfb
NIS		 413 /* Tell PerlIO we are about to tear things apart in case
414 we have layers which are using resources that should
415 be cleaned up now.
416 */
417
418 PerlIO_destruct(aTHX);
419
3280af22 420 if (PL_sv_objcount) {
a0d0e21e
LW		 421 /*
422 * Try to destruct global references. We do this first so that the
423 * destructors and destructees still exist. Some sv's might remain.
424 * Non-referenced objects are on their own.
425 */
a0d0e21e 426 sv_clean_objs();
8990e307
LW		 427 }
428
5cd24f17 429 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 430 SvREFCNT_dec(PL_warnhook);
431 PL_warnhook = Nullsv;
432 SvREFCNT_dec(PL_diehook);
433 PL_diehook = Nullsv;
5cd24f17 434
4b556e6c 435 /* call exit list functions */
3280af22 436 while (PL_exitlistlen-- > 0)
0cb96387 437 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 438
3280af22 439 Safefree(PL_exitlist);
4b556e6c 440
a0d0e21e 441 if (destruct_level == 0){
8990e307 442
a0d0e21e 443 DEBUG_P(debprofdump());
ac27b0f5 444
a0d0e21e
LW		 445 /* The exit() function will do everything that needs doing. */
446 return;
447 }
5dd60ef7 448
551a8b83
JH		 449 /* jettison our possibly duplicated environment */
450
451#ifdef USE_ENVIRON_ARRAY
452 if (environ != PL_origenviron) {
453 I32 i;
454
455 for (i = 0; environ[i]; i++)
4b420006
JH		 456 safesysfree(environ[i]);
457 /* Must use safesysfree() when working with environ. */
458 safesysfree(environ);
551a8b83
JH		 459
460 environ = PL_origenviron;
461 }
462#endif
463
5f05dabc 464 /* loosen bonds of global variables */
465
3280af22
NIS		 466 if(PL_rsfp) {
467 (void)PerlIO_close(PL_rsfp);
468 PL_rsfp = Nullfp;
8ebc5c01 469 }
470
471 /* Filters for program text */
3280af22
NIS		 472 SvREFCNT_dec(PL_rsfp_filters);
473 PL_rsfp_filters = Nullav;
8ebc5c01 474
475 /* switches */
3280af22
NIS		 476 PL_preprocess = FALSE;
477 PL_minus_n = FALSE;
478 PL_minus_p = FALSE;
479 PL_minus_l = FALSE;
480 PL_minus_a = FALSE;
481 PL_minus_F = FALSE;
482 PL_doswitches = FALSE;
599cee73 483 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 484 PL_doextract = FALSE;
485 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 486 PL_unsafe = FALSE;
487
488 Safefree(PL_inplace);
489 PL_inplace = Nullch;
a7cb1f99 490 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 491
492 if (PL_e_script) {
493 SvREFCNT_dec(PL_e_script);
494 PL_e_script = Nullsv;
8ebc5c01 495 }
496
497 /* magical thingies */
498
7889fe52
NIS		 499 SvREFCNT_dec(PL_ofs_sv); /* $, */
500 PL_ofs_sv = Nullsv;
5f05dabc 501
7889fe52
NIS		 502 SvREFCNT_dec(PL_ors_sv); /* $\ */
503 PL_ors_sv = Nullsv;
8ebc5c01 504
3280af22
NIS		 505 SvREFCNT_dec(PL_rs); /* $/ */
506 PL_rs = Nullsv;
dc92893f 507
3280af22
NIS		 508 SvREFCNT_dec(PL_nrs); /* $/ helper */
509 PL_nrs = Nullsv;
5f05dabc 510
d33b2eba
GS		 511 PL_multiline = 0; /* $* */
512 Safefree(PL_osname); /* $^O */
513 PL_osname = Nullch;
5f05dabc 514
3280af22
NIS		 515 SvREFCNT_dec(PL_statname);
516 PL_statname = Nullsv;
517 PL_statgv = Nullgv;
5f05dabc 518
8ebc5c01 519 /* defgv, aka *_ should be taken care of elsewhere */
520
8ebc5c01 521 /* clean up after study() */
3280af22
NIS		 522 SvREFCNT_dec(PL_lastscream);
523 PL_lastscream = Nullsv;
524 Safefree(PL_screamfirst);
525 PL_screamfirst = 0;
526 Safefree(PL_screamnext);
527 PL_screamnext = 0;
8ebc5c01 528
7d5ea4e7
GS		 529 /* float buffer */
530 Safefree(PL_efloatbuf);
531 PL_efloatbuf = Nullch;
532 PL_efloatsize = 0;
533
8ebc5c01 534 /* startup and shutdown function lists */
3280af22
NIS		 535 SvREFCNT_dec(PL_beginav);
536 SvREFCNT_dec(PL_endav);
7d30b5c4 537 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 538 SvREFCNT_dec(PL_initav);
539 PL_beginav = Nullav;
540 PL_endav = Nullav;
7d30b5c4 541 PL_checkav = Nullav;
3280af22 542 PL_initav = Nullav;
5618dfe8 543
8ebc5c01 544 /* shortcuts just get cleared */
3280af22 545 PL_envgv = Nullgv;
3280af22
NIS		 546 PL_incgv = Nullgv;
547 PL_hintgv = Nullgv;
548 PL_errgv = Nullgv;
549 PL_argvgv = Nullgv;
550 PL_argvoutgv = Nullgv;
551 PL_stdingv = Nullgv;
bf49b057 552 PL_stderrgv = Nullgv;
3280af22
NIS		 553 PL_last_in_gv = Nullgv;
554 PL_replgv = Nullgv;
5c831c24 555 PL_debstash = Nullhv;
8ebc5c01 556
557 /* reset so print() ends up where we expect */
558 setdefout(Nullgv);
5c831c24 559
7a1c5554
GS		 560 SvREFCNT_dec(PL_argvout_stack);
561 PL_argvout_stack = Nullav;
8ebc5c01 562
5c831c24
GS		 563 SvREFCNT_dec(PL_modglobal);
564 PL_modglobal = Nullhv;
565 SvREFCNT_dec(PL_preambleav);
566 PL_preambleav = Nullav;
567 SvREFCNT_dec(PL_subname);
568 PL_subname = Nullsv;
569 SvREFCNT_dec(PL_linestr);
570 PL_linestr = Nullsv;
571 SvREFCNT_dec(PL_pidstatus);
572 PL_pidstatus = Nullhv;
573 SvREFCNT_dec(PL_toptarget);
574 PL_toptarget = Nullsv;
575 SvREFCNT_dec(PL_bodytarget);
576 PL_bodytarget = Nullsv;
577 PL_formtarget = Nullsv;
578
d33b2eba 579 /* free locale stuff */
b9582b6a 580#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 581 Safefree(PL_collation_name);
582 PL_collation_name = Nullch;
b9582b6a 583#endif
d33b2eba 584
b9582b6a 585#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 586 Safefree(PL_numeric_name);
587 PL_numeric_name = Nullch;
a453c169 588 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 589#endif
d33b2eba 590
5c831c24
GS		 591 /* clear utf8 character classes */
592 SvREFCNT_dec(PL_utf8_alnum);
593 SvREFCNT_dec(PL_utf8_alnumc);
594 SvREFCNT_dec(PL_utf8_ascii);
595 SvREFCNT_dec(PL_utf8_alpha);
596 SvREFCNT_dec(PL_utf8_space);
597 SvREFCNT_dec(PL_utf8_cntrl);
598 SvREFCNT_dec(PL_utf8_graph);
599 SvREFCNT_dec(PL_utf8_digit);
600 SvREFCNT_dec(PL_utf8_upper);
601 SvREFCNT_dec(PL_utf8_lower);
602 SvREFCNT_dec(PL_utf8_print);
603 SvREFCNT_dec(PL_utf8_punct);
604 SvREFCNT_dec(PL_utf8_xdigit);
605 SvREFCNT_dec(PL_utf8_mark);
606 SvREFCNT_dec(PL_utf8_toupper);
607 SvREFCNT_dec(PL_utf8_tolower);
608 PL_utf8_alnum = Nullsv;
609 PL_utf8_alnumc = Nullsv;
610 PL_utf8_ascii = Nullsv;
611 PL_utf8_alpha = Nullsv;
612 PL_utf8_space = Nullsv;
613 PL_utf8_cntrl = Nullsv;
614 PL_utf8_graph = Nullsv;
615 PL_utf8_digit = Nullsv;
616 PL_utf8_upper = Nullsv;
617 PL_utf8_lower = Nullsv;
618 PL_utf8_print = Nullsv;
619 PL_utf8_punct = Nullsv;
620 PL_utf8_xdigit = Nullsv;
621 PL_utf8_mark = Nullsv;
622 PL_utf8_toupper = Nullsv;
623 PL_utf8_totitle = Nullsv;
624 PL_utf8_tolower = Nullsv;
625
971a9dd3
GS		 626 if (!specialWARN(PL_compiling.cop_warnings))
627 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 628 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 629 if (!specialCopIO(PL_compiling.cop_io))
630 SvREFCNT_dec(PL_compiling.cop_io);
631 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 632#ifdef USE_ITHREADS
633 Safefree(CopFILE(&PL_compiling));
634 CopFILE(&PL_compiling) = Nullch;
635 Safefree(CopSTASHPV(&PL_compiling));
636#else
01724ea0 637 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 638 CopFILEGV(&PL_compiling) = Nullgv;
639 /* cop_stash is not refcounted */
01724ea0 640#endif
5c831c24 641
a0d0e21e 642 /* Prepare to destruct main symbol table. */
5f05dabc 643
3280af22
NIS		 644 hv = PL_defstash;
645 PL_defstash = 0;
a0d0e21e 646 SvREFCNT_dec(hv);
5c831c24
GS		 647 SvREFCNT_dec(PL_curstname);
648 PL_curstname = Nullsv;
a0d0e21e 649
5a844595
GS		 650 /* clear queued errors */
651 SvREFCNT_dec(PL_errors);
652 PL_errors = Nullsv;
653
a0d0e21e 654 FREETMPS;
0453d815 655 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 656 if (PL_scopestack_ix != 0)
0453d815
PM		 657 Perl_warner(aTHX_ WARN_INTERNAL,
658 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 659 (long)PL_scopestack_ix);
660 if (PL_savestack_ix != 0)
0453d815
PM		 661 Perl_warner(aTHX_ WARN_INTERNAL,
662 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 663 (long)PL_savestack_ix);
664 if (PL_tmps_floor != -1)
0453d815 665 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 666 (long)PL_tmps_floor + 1);
a0d0e21e 667 if (cxstack_ix != -1)
0453d815 668 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 669 (long)cxstack_ix + 1);
a0d0e21e 670 }
8990e307
LW		 671
672 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 673 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 674 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 675
676 /* the 2 is for PL_fdpid and PL_strtab */
677 while (PL_sv_count > 2 && sv_clean_all())
678 ;
679
d33b2eba
GS		 680 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
681 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 682 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
683 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 684
d4777f27
GS		 685 AvREAL_off(PL_fdpid); /* no surviving entries */
686 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 687 PL_fdpid = Nullav;
688
6c644e78
GS		 689#ifdef HAVE_INTERP_INTERN
690 sys_intern_clear();
691#endif
692
6e72f9df 693 /* Destruct the global string table. */
694 {
695 /* Yell and reset the HeVAL() slots that are still holding refcounts,
696 * so that sv_free() won't fail on them.
697 */
698 I32 riter;
699 I32 max;
700 HE *hent;
701 HE **array;
702
703 riter = 0;
3280af22
NIS		 704 max = HvMAX(PL_strtab);
705 array = HvARRAY(PL_strtab);
6e72f9df 706 hent = array[0];
707 for (;;) {
0453d815
PM		 708 if (hent && ckWARN_d(WARN_INTERNAL)) {
709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 711 HeVAL(hent) - Nullsv, HeKEY(hent));
712 HeVAL(hent) = Nullsv;
713 hent = HeNEXT(hent);
714 }
715 if (!hent) {
716 if (++riter > max)
717 break;
718 hent = array[riter];
719 }
720 }
721 }
3280af22 722 SvREFCNT_dec(PL_strtab);
6e72f9df 723
e652bb2f 724#ifdef USE_ITHREADS
a0739874
DM		 725 /* free the pointer table used for cloning */
726 ptr_table_free(PL_ptr_table);
53186e96 727#endif
a0739874 728
d33b2eba
GS		 729 /* free special SVs */
730
731 SvREFCNT(&PL_sv_yes) = 0;
732 sv_clear(&PL_sv_yes);
733 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 734 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 735
736 SvREFCNT(&PL_sv_no) = 0;
737 sv_clear(&PL_sv_no);
738 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 739 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 740
741 SvREFCNT(&PL_sv_undef) = 0;
742 SvREADONLY_off(&PL_sv_undef);
d33b2eba 743
0453d815
PM		 744 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
745 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 746
3280af22 747 Safefree(PL_origfilename);
3280af22 748 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 749 if (PL_reg_curpm)
750 Safefree(PL_reg_curpm);
82ba1be6 751 Safefree(PL_reg_poscache);
3280af22
NIS		 752 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
753 Safefree(PL_op_mask);
cf36064f
GS		 754 Safefree(PL_psig_ptr);
755 Safefree(PL_psig_name);
2c2666fc 756 Safefree(PL_bitcount);
ce08f86c 757 Safefree(PL_psig_pend);
6e72f9df 758 nuke_stacks();
3280af22 759 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 760
a0d0e21e 761 DEBUG_P(debprofdump());
11343788 762#ifdef USE_THREADS
5f08fbcd 763 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 764 MUTEX_DESTROY(&PL_sv_mutex);
765 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 766 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 767 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 768 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 769#ifdef EMULATE_ATOMIC_REFCOUNTS
770 MUTEX_DESTROY(&PL_svref_mutex);
771#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 772
8023c3ce 773 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 774 Safefree(SvPVX(PL_thrsv));
775 Safefree(SvANY(PL_thrsv));
776 Safefree(PL_thrsv);
777 PL_thrsv = Nullsv;
8023c3ce 778#endif /* USE_THREADS */
d33b2eba 779
612f20c3
GS		 780 sv_free_arenas();
781
fc36a67e 782 /* As the absolutely last thing, free the non-arena SV for mess() */
783
3280af22 784 if (PL_mess_sv) {
9c63abab
GS		 785 /* it could have accumulated taint magic */
786 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
787 MAGIC* mg;
788 MAGIC* moremagic;
789 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
790 moremagic = mg->mg_moremagic;
14befaf4
DM		 791 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
792 && mg->mg_len >= 0)
9c63abab
GS		 793 Safefree(mg->mg_ptr);
794 Safefree(mg);
795 }
796 }
fc36a67e 797 /* we know that type >= SVt_PV */
155aba94 798 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 799 Safefree(SvPVX(PL_mess_sv));
800 Safefree(SvANY(PL_mess_sv));
801 Safefree(PL_mess_sv);
802 PL_mess_sv = Nullsv;
fc36a67e 803 }
79072805
LW		 804}
805
954c1994
GS		 806/*
807=for apidoc perl_free
808
809Releases a Perl interpreter. See L<perlembed>.
810
811=cut
812*/
813
79072805 814void
0cb96387 815perl_free(pTHXx)
79072805 816{
c5be433b 817#if defined(PERL_OBJECT)
7f0d82f7 818 PerlMem_free(this);
76e3520e 819#else
ce3e5b80
NIS		 820# if defined(WIN32)
821# if defined(PERL_IMPLICIT_SYS)
1c0ca838 822 void *host = w32_internal_host;
ba247512 823 if (PerlProc_lasthost()) {
ce08f86c 824 PerlIO_cleanup();
ba247512 825 }
7f0d82f7 826 PerlMem_free(aTHXx);
1c0ca838 827 win32_delete_internal_host(host);
ce3e5b80 828#else
ce08f86c 829 PerlIO_cleanup();
ce3e5b80
NIS		 830 PerlMem_free(aTHXx);
831#endif
1c0ca838
GS		 832# else
833 PerlMem_free(aTHXx);
834# endif
76e3520e 835#endif
79072805
LW		 836}
837
4b556e6c 838void
864dbfa3 839Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 840{
3280af22
NIS		 841 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
842 PL_exitlist[PL_exitlistlen].fn = fn;
843 PL_exitlist[PL_exitlistlen].ptr = ptr;
844 ++PL_exitlistlen;
4b556e6c
JD		 845}
846
954c1994
GS		 847/*
848=for apidoc perl_parse
849
850Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
851
852=cut
853*/
854
79072805 855int
0cb96387 856perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 857{
6224f72b 858 I32 oldscope;
6224f72b 859 int ret;
db36c5a1 860 dJMPENV;
cea2e8a9
GS		 861#ifdef USE_THREADS
862 dTHX;
863#endif
8d063cd8 864
a687059c
LW		 865#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
866#ifdef IAMSUID
867#undef IAMSUID
cea2e8a9 868 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 869setuid perl scripts securely.\n");
870#endif
871#endif
872
8f1f23e8 873#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 874 _dyld_lookup_and_bind
875 ("__environ", (unsigned long *) &environ_pointer, NULL);
876#endif /* environ */
877
3280af22
NIS		 878 PL_origargv = argv;
879 PL_origargc = argc;
fa6a1c44 880#ifdef USE_ENVIRON_ARRAY
3280af22 881 PL_origenviron = environ;
a0d0e21e
LW		 882#endif
883
3280af22 884 if (PL_do_undump) {
a0d0e21e
LW		 885
886 /* Come here if running an undumped a.out. */
887
3280af22
NIS		 888 PL_origfilename = savepv(argv[0]);
889 PL_do_undump = FALSE;
a0d0e21e 890 cxstack_ix = -1; /* start label stack again */
748a9306 891 init_ids();
a0d0e21e
LW		 892 init_postdump_symbols(argc,argv,env);
893 return 0;
894 }
895
3280af22
NIS		 896 if (PL_main_root) {
897 PL_curpad = AvARRAY(PL_comppad);
898 op_free(PL_main_root);
899 PL_main_root = Nullop;
ff0cee69 900 }
3280af22
NIS		 901 PL_main_start = Nullop;
902 SvREFCNT_dec(PL_main_cv);
903 PL_main_cv = Nullcv;
79072805 904
3280af22
NIS		 905 time(&PL_basetime);
906 oldscope = PL_scopestack_ix;
599cee73 907 PL_dowarn = G_WARN_OFF;
f86702cc 908
14dd3ad8
GS		 909#ifdef PERL_FLEXIBLE_EXCEPTIONS
910 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
911#else
912 JMPENV_PUSH(ret);
913#endif
6224f72b 914 switch (ret) {
312caa8e 915 case 0:
14dd3ad8
GS		 916#ifndef PERL_FLEXIBLE_EXCEPTIONS
917 parse_body(env,xsinit);
918#endif
7d30b5c4
GS		 919 if (PL_checkav)
920 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 921 ret = 0;
922 break;
6224f72b
GS		 923 case 1:
924 STATUS_ALL_FAILURE;
925 /* FALL THROUGH */
926 case 2:
927 /* my_exit() was called */
3280af22 928 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 929 LEAVE;
930 FREETMPS;
3280af22 931 PL_curstash = PL_defstash;
7d30b5c4
GS		 932 if (PL_checkav)
933 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 934 ret = STATUS_NATIVE_EXPORT;
935 break;
6224f72b 936 case 3:
bf49b057 937 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 938 ret = 1;
939 break;
6224f72b 940 }
14dd3ad8
GS		 941 JMPENV_POP;
942 return ret;
943}
944
945#ifdef PERL_FLEXIBLE_EXCEPTIONS
946STATIC void *
947S_vparse_body(pTHX_ va_list args)
948{
949 char **env = va_arg(args, char**);
950 XSINIT_t xsinit = va_arg(args, XSINIT_t);
951
952 return parse_body(env, xsinit);
312caa8e 953}
14dd3ad8 954#endif
312caa8e
CS		 955
956STATIC void *
14dd3ad8 957S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 958{
312caa8e
CS		 959 int argc = PL_origargc;
960 char **argv = PL_origargv;
312caa8e
CS		 961 char *scriptname = NULL;
962 int fdscript = -1;
963 VOL bool dosearch = FALSE;
964 char *validarg = "";
965 AV* comppadlist;
966 register SV *sv;
967 register char *s;
659ca9ea 968 char *popts, *cddir = Nullch;
312caa8e 969
3280af22 970 sv_setpvn(PL_linestr,"",0);
79cb57f6 971 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 972 SAVEFREESV(sv);
973 init_main_stash();
54310121 974
6224f72b
GS		 975 for (argc--,argv++; argc > 0; argc--,argv++) {
976 if (argv[0][0] != '-' || !argv[0][1])
977 break;
978#ifdef DOSUID
979 if (*validarg)
980 validarg = " PHOOEY ";
981 else
982 validarg = argv[0];
13281fa4 983#endif
6224f72b
GS		 984 s = argv[0]+1;
985 reswitch:
986 switch (*s) {
729a02f2
GS		 987 case 'C':
988#ifdef WIN32
c0932edc 989 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 990 /* FALL THROUGH */
991#endif
1d5472a9
GS		 992#ifndef PERL_STRICT_CR
993 case '\r':
994#endif
6224f72b
GS		 995 case ' ':
996 case '0':
997 case 'F':
998 case 'a':
999 case 'c':
1000 case 'd':
1001 case 'D':
1002 case 'h':
1003 case 'i':
1004 case 'l':
1005 case 'M':
1006 case 'm':
1007 case 'n':
1008 case 'p':
1009 case 's':
1010 case 'u':
1011 case 'U':
1012 case 'v':
599cee73
PM		 1013 case 'W':
1014 case 'X':
6224f72b 1015 case 'w':
155aba94 1016 if ((s = moreswitches(s)))
6224f72b
GS		 1017 goto reswitch;
1018 break;
33b78306 1019
6224f72b 1020 case 'T':
3280af22 1021 PL_tainting = TRUE;
6224f72b
GS		 1022 s++;
1023 goto reswitch;
f86702cc 1024
6224f72b 1025 case 'e':
bf4acbe4
GS		 1026#ifdef MACOS_TRADITIONAL
1027 /* ignore -e for Dev:Pseudo argument */
1028 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1029 break;
bf4acbe4 1030#endif
3280af22 1031 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1032 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1033 if (!PL_e_script) {
79cb57f6 1034 PL_e_script = newSVpvn("",0);
0cb96387 1035 filter_add(read_e_script, NULL);
6224f72b
GS		 1036 }
1037 if (*++s)
3280af22 1038 sv_catpv(PL_e_script, s);
6224f72b 1039 else if (argv[1]) {
3280af22 1040 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1041 argc--,argv++;
1042 }
1043 else
cea2e8a9 1044 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1045 sv_catpv(PL_e_script, "\n");
6224f72b 1046 break;
afe37c7d 1047
6224f72b
GS		 1048 case 'I': /* -I handled both here and in moreswitches() */
1049 forbid_setid("-I");
1050 if (!*++s && (s=argv[1]) != Nullch) {
1051 argc--,argv++;
1052 }
6224f72b 1053 if (s && *s) {
0df16ed7
GS		 1054 char *p;
1055 STRLEN len = strlen(s);
1056 p = savepvn(s, len);
9c8a64f0 1057 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1058 sv_catpvn(sv, "-I", 2);
1059 sv_catpvn(sv, p, len);
1060 sv_catpvn(sv, " ", 1);
6224f72b 1061 Safefree(p);
0df16ed7
GS		 1062 }
1063 else
a67e862a 1064 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1065 break;
1066 case 'P':
1067 forbid_setid("-P");
3280af22 1068 PL_preprocess = TRUE;
6224f72b
GS		 1069 s++;
1070 goto reswitch;
1071 case 'S':
1072 forbid_setid("-S");
1073 dosearch = TRUE;
1074 s++;
1075 goto reswitch;
1076 case 'V':
3280af22
NIS		 1077 if (!PL_preambleav)
1078 PL_preambleav = newAV();
1079 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1080 if (*++s != ':') {
3280af22 1081 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1082#ifdef VMS
6b88bc9c 1083 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1084#else
3280af22 1085 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1086#endif
3280af22 1087 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1088# ifdef DEBUGGING
3280af22 1089 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1090# endif
6224f72b 1091# ifdef MULTIPLICITY
8f872242 1092 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1093# endif
b363f7ed
GS		 1094# ifdef USE_THREADS
1095 sv_catpv(PL_Sv," USE_THREADS");
1096# endif
ac5e8965
JH		 1097# ifdef USE_ITHREADS
1098 sv_catpv(PL_Sv," USE_ITHREADS");
1099# endif
10cc9d2a
JH		 1100# ifdef USE_64_BIT_INT
1101 sv_catpv(PL_Sv," USE_64_BIT_INT");
1102# endif
1103# ifdef USE_64_BIT_ALL
1104 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1105# endif
1106# ifdef USE_LONG_DOUBLE
1107 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1108# endif
53430762
JH		 1109# ifdef USE_LARGE_FILES
1110 sv_catpv(PL_Sv," USE_LARGE_FILES");
1111# endif
ac5e8965
JH		 1112# ifdef USE_SOCKS
1113 sv_catpv(PL_Sv," USE_SOCKS");
1114# endif
b363f7ed
GS		 1115# ifdef PERL_OBJECT
1116 sv_catpv(PL_Sv," PERL_OBJECT");
1117# endif
1118# ifdef PERL_IMPLICIT_CONTEXT
1119 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1120# endif
1121# ifdef PERL_IMPLICIT_SYS
1122 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1123# endif
3280af22 1124 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1125
6224f72b
GS		 1126#if defined(LOCAL_PATCH_COUNT)
1127 if (LOCAL_PATCH_COUNT > 0) {
1128 int i;
3280af22 1129 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1130 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1131 if (PL_localpatches[i])
cea2e8a9 1132 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1133 }
1134 }
1135#endif
cea2e8a9 1136 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1137#ifdef __DATE__
1138# ifdef __TIME__
cea2e8a9 1139 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1140# else
cea2e8a9 1141 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1142# endif
1143#endif
3280af22 1144 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1145$\"=\"\\n \"; \
1146@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1147print \" \\%ENV:\\n @env\\n\" if @env; \
1148print \" \\@INC:\\n @INC\\n\";");
1149 }
1150 else {
3280af22
NIS		 1151 PL_Sv = newSVpv("config_vars(qw(",0);
1152 sv_catpv(PL_Sv, ++s);
1153 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1154 s += strlen(s);
1155 }
3280af22 1156 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1157 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1158 goto reswitch;
1159 case 'x':
3280af22 1160 PL_doextract = TRUE;
6224f72b
GS		 1161 s++;
1162 if (*s)
f4c556ac 1163 cddir = s;
6224f72b
GS		 1164 break;
1165 case 0:
1166 break;
1167 case '-':
1168 if (!*++s || isSPACE(*s)) {
1169 argc--,argv++;
1170 goto switch_end;
1171 }
1172 /* catch use of gnu style long options */
1173 if (strEQ(s, "version")) {
1174 s = "v";
1175 goto reswitch;
1176 }
1177 if (strEQ(s, "help")) {
1178 s = "h";
1179 goto reswitch;
1180 }
1181 s--;
1182 /* FALL THROUGH */
1183 default:
cea2e8a9 1184 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1185 }
1186 }
6224f72b 1187 switch_end:
54310121 1188
f675dbe5
CB		 1189 if (
1190#ifndef SECURE_INTERNAL_GETENV
1191 !PL_tainting &&
1192#endif
659ca9ea 1193 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1194 {
659ca9ea 1195 s = savepv(popts);
74288ac8
GS		 1196 while (isSPACE(*s))
1197 s++;
1198 if (*s == '-' && *(s+1) == 'T')
1199 PL_tainting = TRUE;
1200 else {
1201 while (s && *s) {
4ea8f8fb 1202 char *d;
74288ac8
GS		 1203 while (isSPACE(*s))
1204 s++;
1205 if (*s == '-') {
1206 s++;
1207 if (isSPACE(*s))
1208 continue;
1209 }
4ea8f8fb 1210 d = s;
74288ac8
GS		 1211 if (!*s)
1212 break;
1213 if (!strchr("DIMUdmw", *s))
cea2e8a9 1214 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1215 while (++s && *s) {
1216 if (isSPACE(*s)) {
1217 *s++ = '\0';
1218 break;
1219 }
1220 }
1221 moreswitches(d);
6224f72b 1222 }
6224f72b
GS		 1223 }
1224 }
a0d0e21e 1225
6224f72b
GS		 1226 if (!scriptname)
1227 scriptname = argv[0];
3280af22 1228 if (PL_e_script) {
6224f72b
GS		 1229 argc++,argv--;
1230 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1231 }
1232 else if (scriptname == Nullch) {
1233#ifdef MSDOS
1234 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1235 moreswitches("h");
1236#endif
1237 scriptname = "-";
1238 }
1239
1240 init_perllib();
1241
1242 open_script(scriptname,dosearch,sv,&fdscript);
1243
1244 validate_suid(validarg, scriptname,fdscript);
1245
64ca3a65 1246#ifndef PERL_MICRO
0b5b802d
GS		 1247#if defined(SIGCHLD) || defined(SIGCLD)
1248 {
1249#ifndef SIGCHLD
1250# define SIGCHLD SIGCLD
1251#endif
1252 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1253 if (sigstate == SIG_IGN) {
1254 if (ckWARN(WARN_SIGNAL))
1255 Perl_warner(aTHX_ WARN_SIGNAL,
1256 "Can't ignore signal CHLD, forcing to default");
1257 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1258 }
1259 }
1260#endif
64ca3a65 1261#endif
0b5b802d 1262
bf4acbe4
GS		 1263#ifdef MACOS_TRADITIONAL
1264 if (PL_doextract || gMacPerl_AlwaysExtract) {
1265#else
f4c556ac 1266 if (PL_doextract) {
bf4acbe4 1267#endif
6224f72b 1268 find_beginning();
f4c556ac
GS		 1269 if (cddir && PerlDir_chdir(cddir) < 0)
1270 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1271
1272 }
6224f72b 1273
3280af22
NIS		 1274 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1275 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1276 CvUNIQUE_on(PL_compcv);
1277
1278 PL_comppad = newAV();
1279 av_push(PL_comppad, Nullsv);
1280 PL_curpad = AvARRAY(PL_comppad);
1281 PL_comppad_name = newAV();
1282 PL_comppad_name_fill = 0;
1283 PL_min_intro_pending = 0;
1284 PL_padix = 0;
6224f72b 1285#ifdef USE_THREADS
79cb57f6 1286 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1287 PL_curpad[0] = (SV*)newAV();
1288 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1289 CvOWNER(PL_compcv) = 0;
1290 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1291 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1292#endif /* USE_THREADS */
1293
1294 comppadlist = newAV();
1295 AvREAL_off(comppadlist);
3280af22
NIS		 1296 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1297 av_store(comppadlist, 1, (SV*)PL_comppad);
1298 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1299
1300 boot_core_UNIVERSAL();
9a34ef1d 1301#ifndef PERL_MICRO
09bef843 1302 boot_core_xsutils();
9a34ef1d 1303#endif
6224f72b
GS		 1304
1305 if (xsinit)
0cb96387 1306 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1307#ifndef PERL_MICRO
ed79a026 1308#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1309 init_os_extras();
6224f72b 1310#endif
64ca3a65 1311#endif
6224f72b 1312
29209bc5 1313#ifdef USE_SOCKS
1b9c9cf5
DH		 1314# ifdef HAS_SOCKS5_INIT
1315 socks5_init(argv[0]);
1316# else
29209bc5 1317 SOCKSinit(argv[0]);
1b9c9cf5 1318# endif
ac27b0f5 1319#endif
29209bc5 1320
6224f72b
GS		 1321 init_predump_symbols();
1322 /* init_postdump_symbols not currently designed to be called */
1323 /* more than once (ENV isn't cleared first, for example) */
1324 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1325 if (!PL_do_undump)
6224f72b
GS		 1326 init_postdump_symbols(argc,argv,env);
1327
1328 init_lexer();
1329
1330 /* now parse the script */
1331
1332 SETERRNO(0,SS$_NORMAL);
3280af22 1333 PL_error_count = 0;
bf4acbe4
GS		 1334#ifdef MACOS_TRADITIONAL
1335 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1336 if (PL_minus_c)
1337 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1338 else {
1339 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1340 MacPerl_MPWFileName(PL_origfilename));
1341 }
1342 }
1343#else
3280af22
NIS		 1344 if (yyparse() || PL_error_count) {
1345 if (PL_minus_c)
cea2e8a9 1346 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1347 else {
cea2e8a9 1348 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1349 PL_origfilename);
6224f72b
GS		 1350 }
1351 }
bf4acbe4 1352#endif
57843af0 1353 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1354 PL_curstash = PL_defstash;
1355 PL_preprocess = FALSE;
1356 if (PL_e_script) {
1357 SvREFCNT_dec(PL_e_script);
1358 PL_e_script = Nullsv;
6224f72b
GS		 1359 }
1360
1361 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1362 SvREFCNT_dec(PL_rs);
1363 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1364 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1365 if (PL_do_undump)
6224f72b
GS		 1366 my_unexec();
1367
57843af0
GS		 1368 if (isWARN_ONCE) {
1369 SAVECOPFILE(PL_curcop);
1370 SAVECOPLINE(PL_curcop);
3280af22 1371 gv_check(PL_defstash);
57843af0 1372 }
6224f72b
GS		 1373
1374 LEAVE;
1375 FREETMPS;
1376
1377#ifdef MYMALLOC
1378 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1379 dump_mstats("after compilation:");
1380#endif
1381
1382 ENTER;
3280af22 1383 PL_restartop = 0;
312caa8e 1384 return NULL;
6224f72b
GS		 1385}
1386
954c1994
GS		 1387/*
1388=for apidoc perl_run
1389
1390Tells a Perl interpreter to run. See L<perlembed>.
1391
1392=cut
1393*/
1394
6224f72b 1395int
0cb96387 1396perl_run(pTHXx)
6224f72b 1397{
6224f72b 1398 I32 oldscope;
14dd3ad8 1399 int ret = 0;
db36c5a1 1400 dJMPENV;
cea2e8a9
GS		 1401#ifdef USE_THREADS
1402 dTHX;
1403#endif
6224f72b 1404
3280af22 1405 oldscope = PL_scopestack_ix;
6224f72b 1406
14dd3ad8 1407#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1408 redo_body:
14dd3ad8
GS		 1409 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1410#else
1411 JMPENV_PUSH(ret);
1412#endif
6224f72b
GS		 1413 switch (ret) {
1414 case 1:
1415 cxstack_ix = -1; /* start context stack again */
312caa8e 1416 goto redo_body;
14dd3ad8
GS		 1417 case 0: /* normal completion */
1418#ifndef PERL_FLEXIBLE_EXCEPTIONS
1419 redo_body:
1420 run_body(oldscope);
1421#endif
1422 /* FALL THROUGH */
1423 case 2: /* my_exit() */
3280af22 1424 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1425 LEAVE;
1426 FREETMPS;
3280af22 1427 PL_curstash = PL_defstash;
865be832 1428 if (PL_endav && !PL_minus_c)
3280af22 1429 call_list(oldscope, PL_endav);
6224f72b
GS		 1430#ifdef MYMALLOC
1431 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1432 dump_mstats("after execution: ");
1433#endif
14dd3ad8
GS		 1434 ret = STATUS_NATIVE_EXPORT;
1435 break;
6224f72b 1436 case 3:
312caa8e
CS		 1437 if (PL_restartop) {
1438 POPSTACK_TO(PL_mainstack);
1439 goto redo_body;
6224f72b 1440 }
bf49b057 1441 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1442 FREETMPS;
14dd3ad8
GS		 1443 ret = 1;
1444 break;
6224f72b
GS		 1445 }
1446
14dd3ad8
GS		 1447 JMPENV_POP;
1448 return ret;
312caa8e
CS		 1449}
1450
14dd3ad8 1451#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1452STATIC void *
14dd3ad8 1453S_vrun_body(pTHX_ va_list args)
312caa8e 1454{
312caa8e
CS		 1455 I32 oldscope = va_arg(args, I32);
1456
14dd3ad8
GS		 1457 return run_body(oldscope);
1458}
1459#endif
1460
1461
1462STATIC void *
1463S_run_body(pTHX_ I32 oldscope)
1464{
6224f72b 1465 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1466 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1467
3280af22 1468 if (!PL_restartop) {
6224f72b
GS		 1469 DEBUG_x(dump_all());
1470 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1471 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1472 PTR2UV(thr)));
6224f72b 1473
3280af22 1474 if (PL_minus_c) {
bf4acbe4
GS		 1475#ifdef MACOS_TRADITIONAL
1476 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1477#else
bf49b057 1478 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1479#endif
6224f72b
GS		 1480 my_exit(0);
1481 }
3280af22 1482 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1483 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1484 if (PL_initav)
1485 call_list(oldscope, PL_initav);
6224f72b
GS		 1486 }
1487
1488 /* do it */
1489
3280af22 1490 if (PL_restartop) {
533c011a 1491 PL_op = PL_restartop;
3280af22 1492 PL_restartop = 0;
cea2e8a9 1493 CALLRUNOPS(aTHX);
6224f72b 1494 }
3280af22
NIS		 1495 else if (PL_main_start) {
1496 CvDEPTH(PL_main_cv) = 1;
533c011a 1497 PL_op = PL_main_start;
cea2e8a9 1498 CALLRUNOPS(aTHX);
6224f72b
GS		 1499 }
1500
f6b3007c
JH		 1501 my_exit(0);
1502 /* NOTREACHED */
312caa8e 1503 return NULL;
6224f72b
GS		 1504}
1505
954c1994
GS		 1506/*
1507=for apidoc p||get_sv
1508
1509Returns the SV of the specified Perl scalar. If C<create> is set and the
1510Perl variable does not exist then it will be created. If C<create> is not
1511set and the variable does not exist then NULL is returned.
1512
1513=cut
1514*/
1515
6224f72b 1516SV*
864dbfa3 1517Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1518{
1519 GV *gv;
1520#ifdef USE_THREADS
1521 if (name[1] == '\0' && !isALPHA(name[0])) {
1522 PADOFFSET tmp = find_threadsv(name);
411caa50 1523 if (tmp != NOT_IN_PAD)
6224f72b 1524 return THREADSV(tmp);
6224f72b
GS		 1525 }
1526#endif /* USE_THREADS */
1527 gv = gv_fetchpv(name, create, SVt_PV);
1528 if (gv)
1529 return GvSV(gv);
1530 return Nullsv;
1531}
1532
954c1994
GS		 1533/*
1534=for apidoc p||get_av
1535
1536Returns the AV of the specified Perl array. If C<create> is set and the
1537Perl variable does not exist then it will be created. If C<create> is not
1538set and the variable does not exist then NULL is returned.
1539
1540=cut
1541*/
1542
6224f72b 1543AV*
864dbfa3 1544Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1545{
1546 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1547 if (create)
1548 return GvAVn(gv);
1549 if (gv)
1550 return GvAV(gv);
1551 return Nullav;
1552}
1553
954c1994
GS		 1554/*
1555=for apidoc p||get_hv
1556
1557Returns the HV of the specified Perl hash. If C<create> is set and the
1558Perl variable does not exist then it will be created. If C<create> is not
1559set and the variable does not exist then NULL is returned.
1560
1561=cut
1562*/
1563
6224f72b 1564HV*
864dbfa3 1565Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1566{
a0d0e21e
LW		 1567 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1568 if (create)
1569 return GvHVn(gv);
1570 if (gv)
1571 return GvHV(gv);
1572 return Nullhv;
1573}
1574
954c1994
GS		 1575/*
1576=for apidoc p||get_cv
1577
1578Returns the CV of the specified Perl subroutine. If C<create> is set and
1579the Perl subroutine does not exist then it will be declared (which has the
1580same effect as saying C<sub name;>). If C<create> is not set and the
1581subroutine does not exist then NULL is returned.
1582
1583=cut
1584*/
1585
a0d0e21e 1586CV*
864dbfa3 1587Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1588{
1589 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1590 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1591 /* XXX this is probably not what they think they're getting.
1592 * It has the same effect as "sub name;", i.e. just a forward
1593 * declaration! */
8ebc5c01 1594 if (create && !GvCVu(gv))
774d564b 1595 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1596 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1597 Nullop,
a0d0e21e
LW		 1598 Nullop);
1599 if (gv)
8ebc5c01 1600 return GvCVu(gv);
a0d0e21e
LW		 1601 return Nullcv;
1602}
1603
79072805
LW		 1604/* Be sure to refetch the stack pointer after calling these routines. */
1605
954c1994
GS		 1606/*
1607=for apidoc p||call_argv
1608
1609Performs a callback to the specified Perl sub. See L<perlcall>.
1610
1611=cut
1612*/
1613
a0d0e21e 1614I32
864dbfa3 1615Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1616
8ac85365
NIS		 1617 /* See G_* flags in cop.h */
1618 /* null terminated arg list */
8990e307 1619{
a0d0e21e 1620 dSP;
8990e307 1621
924508f0 1622 PUSHMARK(SP);
a0d0e21e 1623 if (argv) {
8990e307 1624 while (*argv) {
a0d0e21e 1625 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1626 argv++;
1627 }
a0d0e21e 1628 PUTBACK;
8990e307 1629 }
864dbfa3 1630 return call_pv(sub_name, flags);
8990e307
LW		 1631}
1632
954c1994
GS		 1633/*
1634=for apidoc p||call_pv
1635
1636Performs a callback to the specified Perl sub. See L<perlcall>.
1637
1638=cut
1639*/
1640
a0d0e21e 1641I32
864dbfa3 1642Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1643 /* name of the subroutine */
1644 /* See G_* flags in cop.h */
a0d0e21e 1645{
864dbfa3 1646 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1647}
1648
954c1994
GS		 1649/*
1650=for apidoc p||call_method
1651
1652Performs a callback to the specified Perl method. The blessed object must
1653be on the stack. See L<perlcall>.
1654
1655=cut
1656*/
1657
a0d0e21e 1658I32
864dbfa3 1659Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1660 /* name of the subroutine */
1661 /* See G_* flags in cop.h */
a0d0e21e 1662{
968b3946 1663 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1664}
1665
1666/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1667/*
1668=for apidoc p||call_sv
1669
1670Performs a callback to the Perl sub whose name is in the SV. See
1671L<perlcall>.
1672
1673=cut
1674*/
1675
a0d0e21e 1676I32
864dbfa3 1677Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1678 /* See G_* flags in cop.h */
a0d0e21e 1679{
924508f0 1680 dSP;
a0d0e21e 1681 LOGOP myop; /* fake syntax tree node */
968b3946 1682 UNOP method_op;
aa689395 1683 I32 oldmark;
b7953727 1684 I32 retval = 0;
a0d0e21e 1685 I32 oldscope;
54310121 1686 bool oldcatch = CATCH_GET;
6224f72b 1687 int ret;
533c011a 1688 OP* oldop = PL_op;
db36c5a1 1689 dJMPENV;
1e422769 1690
a0d0e21e
LW		 1691 if (flags & G_DISCARD) {
1692 ENTER;
1693 SAVETMPS;
1694 }
1695
aa689395 1696 Zero(&myop, 1, LOGOP);
54310121 1697 myop.op_next = Nullop;
f51d4af5 1698 if (!(flags & G_NOARGS))
aa689395 1699 myop.op_flags |= OPf_STACKED;
54310121 1700 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1701 (flags & G_ARRAY) ? OPf_WANT_LIST :
1702 OPf_WANT_SCALAR);
462e5cf6 1703 SAVEOP();
533c011a 1704 PL_op = (OP*)&myop;
aa689395 1705
3280af22
NIS		 1706 EXTEND(PL_stack_sp, 1);
1707 *++PL_stack_sp = sv;
aa689395 1708 oldmark = TOPMARK;
3280af22 1709 oldscope = PL_scopestack_ix;
a0d0e21e 1710
3280af22 1711 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1712 /* Handle first BEGIN of -d. */
3280af22 1713 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1714 /* Try harder, since this may have been a sighandler, thus
1715 * curstash may be meaningless. */
3280af22 1716 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1717 && !(flags & G_NODEBUG))
533c011a 1718 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1719
968b3946
GS		 1720 if (flags & G_METHOD) {
1721 Zero(&method_op, 1, UNOP);
1722 method_op.op_next = PL_op;
1723 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1724 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1725 PL_op = (OP*)&method_op;
968b3946
GS		 1726 }
1727
312caa8e 1728 if (!(flags & G_EVAL)) {
0cdb2077 1729 CATCH_SET(TRUE);
14dd3ad8 1730 call_body((OP*)&myop, FALSE);
312caa8e 1731 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1732 CATCH_SET(oldcatch);
312caa8e
CS		 1733 }
1734 else {
d78bda3d 1735 myop.op_other = (OP*)&myop;
3280af22 1736 PL_markstack_ptr--;
4633a7c4
LW		 1737 /* we're trying to emulate pp_entertry() here */
1738 {
c09156bb 1739 register PERL_CONTEXT *cx;
54310121 1740 I32 gimme = GIMME_V;
ac27b0f5 1741
4633a7c4
LW		 1742 ENTER;
1743 SAVETMPS;
ac27b0f5 1744
968b3946 1745 push_return(Nullop);
1d76a5c3 1746 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1747 PUSHEVAL(cx, 0, 0);
533c011a 1748 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1749
faef0170 1750 PL_in_eval = EVAL_INEVAL;
4633a7c4 1751 if (flags & G_KEEPERR)
faef0170 1752 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1753 else
38a03e6e 1754 sv_setpv(ERRSV,"");
4633a7c4 1755 }
3280af22 1756 PL_markstack_ptr++;
a0d0e21e 1757
14dd3ad8
GS		 1758#ifdef PERL_FLEXIBLE_EXCEPTIONS
1759 redo_body:
1760 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1761 (OP*)&myop, FALSE);
14dd3ad8
GS		 1762#else
1763 JMPENV_PUSH(ret);
1764#endif
6224f72b
GS		 1765 switch (ret) {
1766 case 0:
14dd3ad8
GS		 1767#ifndef PERL_FLEXIBLE_EXCEPTIONS
1768 redo_body:
1769 call_body((OP*)&myop, FALSE);
1770#endif
312caa8e
CS		 1771 retval = PL_stack_sp - (PL_stack_base + oldmark);
1772 if (!(flags & G_KEEPERR))
1773 sv_setpv(ERRSV,"");
a0d0e21e 1774 break;
6224f72b 1775 case 1:
f86702cc 1776 STATUS_ALL_FAILURE;
a0d0e21e 1777 /* FALL THROUGH */
6224f72b 1778 case 2:
a0d0e21e 1779 /* my_exit() was called */
3280af22 1780 PL_curstash = PL_defstash;
a0d0e21e 1781 FREETMPS;
14dd3ad8 1782 JMPENV_POP;
cc3604b1 1783 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1784 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1785 my_exit_jump();
a0d0e21e 1786 /* NOTREACHED */
6224f72b 1787 case 3:
3280af22 1788 if (PL_restartop) {
533c011a 1789 PL_op = PL_restartop;
3280af22 1790 PL_restartop = 0;
312caa8e 1791 goto redo_body;
a0d0e21e 1792 }
3280af22 1793 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1794 if (flags & G_ARRAY)
1795 retval = 0;
1796 else {
1797 retval = 1;
3280af22 1798 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1799 }
312caa8e 1800 break;
a0d0e21e 1801 }
a0d0e21e 1802
3280af22 1803 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1804 SV **newsp;
1805 PMOP *newpm;
1806 I32 gimme;
c09156bb 1807 register PERL_CONTEXT *cx;
a0a2876f
LW		 1808 I32 optype;
1809
1810 POPBLOCK(cx,newpm);
1811 POPEVAL(cx);
1812 pop_return();
3280af22 1813 PL_curpm = newpm;
a0a2876f 1814 LEAVE;
a0d0e21e 1815 }
14dd3ad8 1816 JMPENV_POP;
a0d0e21e 1817 }
1e422769 1818
a0d0e21e 1819 if (flags & G_DISCARD) {
3280af22 1820 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1821 retval = 0;
1822 FREETMPS;
1823 LEAVE;
1824 }
533c011a 1825 PL_op = oldop;
a0d0e21e
LW		 1826 return retval;
1827}
1828
14dd3ad8 1829#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1830STATIC void *
14dd3ad8 1831S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1832{
1833 OP *myop = va_arg(args, OP*);
1834 int is_eval = va_arg(args, int);
1835
14dd3ad8 1836 call_body(myop, is_eval);
312caa8e
CS		 1837 return NULL;
1838}
14dd3ad8 1839#endif
312caa8e
CS		 1840
1841STATIC void
14dd3ad8 1842S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1843{
312caa8e
CS		 1844 if (PL_op == myop) {
1845 if (is_eval)
f807eda9 1846 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1847 else
f807eda9 1848 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1849 }
1850 if (PL_op)
cea2e8a9 1851 CALLRUNOPS(aTHX);
312caa8e
CS		 1852}
1853
6e72f9df 1854/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1855
954c1994
GS		 1856/*
1857=for apidoc p||eval_sv
1858
1859Tells Perl to C<eval> the string in the SV.
1860
1861=cut
1862*/
1863
a0d0e21e 1864I32
864dbfa3 1865Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1866
8ac85365 1867 /* See G_* flags in cop.h */
a0d0e21e 1868{
924508f0 1869 dSP;
a0d0e21e 1870 UNOP myop; /* fake syntax tree node */
3280af22 1871 I32 oldmark = SP - PL_stack_base;
b7953727 1872 I32 retval = 0;
4633a7c4 1873 I32 oldscope;
6224f72b 1874 int ret;
533c011a 1875 OP* oldop = PL_op;
db36c5a1 1876 dJMPENV;
84902520 1877
4633a7c4
LW		 1878 if (flags & G_DISCARD) {
1879 ENTER;
1880 SAVETMPS;
1881 }
1882
462e5cf6 1883 SAVEOP();
533c011a
NIS		 1884 PL_op = (OP*)&myop;
1885 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1886 EXTEND(PL_stack_sp, 1);
1887 *++PL_stack_sp = sv;
1888 oldscope = PL_scopestack_ix;
79072805 1889
4633a7c4
LW		 1890 if (!(flags & G_NOARGS))
1891 myop.op_flags = OPf_STACKED;
79072805 1892 myop.op_next = Nullop;
6e72f9df 1893 myop.op_type = OP_ENTEREVAL;
54310121 1894 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1895 (flags & G_ARRAY) ? OPf_WANT_LIST :
1896 OPf_WANT_SCALAR);
6e72f9df 1897 if (flags & G_KEEPERR)
1898 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1899
14dd3ad8 1900#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1901 redo_body:
14dd3ad8 1902 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1903 (OP*)&myop, TRUE);
14dd3ad8
GS		 1904#else
1905 JMPENV_PUSH(ret);
1906#endif
6224f72b
GS		 1907 switch (ret) {
1908 case 0:
14dd3ad8
GS		 1909#ifndef PERL_FLEXIBLE_EXCEPTIONS
1910 redo_body:
1911 call_body((OP*)&myop,TRUE);
1912#endif
312caa8e
CS		 1913 retval = PL_stack_sp - (PL_stack_base + oldmark);
1914 if (!(flags & G_KEEPERR))
1915 sv_setpv(ERRSV,"");
4633a7c4 1916 break;
6224f72b 1917 case 1:
f86702cc 1918 STATUS_ALL_FAILURE;
4633a7c4 1919 /* FALL THROUGH */
6224f72b 1920 case 2:
4633a7c4 1921 /* my_exit() was called */
3280af22 1922 PL_curstash = PL_defstash;
4633a7c4 1923 FREETMPS;
14dd3ad8 1924 JMPENV_POP;
cc3604b1 1925 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1926 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1927 my_exit_jump();
4633a7c4 1928 /* NOTREACHED */
6224f72b 1929 case 3:
3280af22 1930 if (PL_restartop) {
533c011a 1931 PL_op = PL_restartop;
3280af22 1932 PL_restartop = 0;
312caa8e 1933 goto redo_body;
4633a7c4 1934 }
3280af22 1935 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1936 if (flags & G_ARRAY)
1937 retval = 0;
1938 else {
1939 retval = 1;
3280af22 1940 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1941 }
312caa8e 1942 break;
4633a7c4
LW		 1943 }
1944
14dd3ad8 1945 JMPENV_POP;
4633a7c4 1946 if (flags & G_DISCARD) {
3280af22 1947 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1948 retval = 0;
1949 FREETMPS;
1950 LEAVE;
1951 }
533c011a 1952 PL_op = oldop;
4633a7c4
LW		 1953 return retval;
1954}
1955
954c1994
GS		 1956/*
1957=for apidoc p||eval_pv
1958
1959Tells Perl to C<eval> the given string and return an SV* result.
1960
1961=cut
1962*/
1963
137443ea 1964SV*
864dbfa3 1965Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1966{
1967 dSP;
1968 SV* sv = newSVpv(p, 0);
1969
864dbfa3 1970 eval_sv(sv, G_SCALAR);
137443ea 1971 SvREFCNT_dec(sv);
1972
1973 SPAGAIN;
1974 sv = POPs;
1975 PUTBACK;
1976
2d8e6c8d
GS		 1977 if (croak_on_error && SvTRUE(ERRSV)) {
1978 STRLEN n_a;
cea2e8a9 1979 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1980 }
137443ea 1981
1982 return sv;
1983}
1984
4633a7c4
LW		 1985/* Require a module. */
1986
954c1994
GS		 1987/*
1988=for apidoc p||require_pv
1989
7d3fb230
BS		 1990Tells Perl to C<require> the file named by the string argument. It is
1991analogous to the Perl code C<eval "require '$file'">. It's even
1992implemented that way; consider using Perl_load_module instead.
954c1994 1993
7d3fb230 1994=cut */
954c1994 1995
4633a7c4 1996void
864dbfa3 1997Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1998{
d3acc0f7
JP		 1999 SV* sv;
2000 dSP;
e788e7d3 2001 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2002 PUTBACK;
2003 sv = sv_newmortal();
4633a7c4
LW		 2004 sv_setpv(sv, "require '");
2005 sv_catpv(sv, pv);
2006 sv_catpv(sv, "'");
864dbfa3 2007 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2008 SPAGAIN;
2009 POPSTACK;
79072805
LW		 2010}
2011
79072805 2012void
864dbfa3 2013Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2014{
2015 register GV *gv;
2016
155aba94 2017 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2018 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2019}
2020
76e3520e 2021STATIC void
cea2e8a9 2022S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2023{
ab821d7f 2024 /* This message really ought to be max 23 lines.
2025 * Removed -h because the user already knows that opton. Others? */
fb73857a 2026
76e3520e 2027 static char *usage_msg[] = {
fb73857a 2028"-0[octal] specify record separator (\\0, if no argument)",
2029"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2030"-C enable native wide character system interfaces",
1950ee41 2031"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2032"-d[:debugger] run program under debugger",
2033"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2034"-e 'command' one line of program (several -e's allowed, omit programfile)",
2035"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2036"-i[extension] edit <> files in place (makes backup if extension supplied)",
2037"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2038"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2039"-[mM][-]module execute `use/no module...' before executing program",
2040"-n assume 'while (<>) { ... }' loop around program",
2041"-p assume loop like -n but print line also, like sed",
2042"-P run program through C preprocessor before compilation",
2043"-s enable rudimentary parsing for switches after programfile",
2044"-S look for programfile using PATH environment variable",
2045"-T enable tainting checks",
2046"-u dump core after parsing program",
fb73857a 2047"-U allow unsafe operations",
aac3bd0d
GS		 2048"-v print version, subversion (includes VERY IMPORTANT perl info)",
2049"-V[:variable] print configuration summary (or a single Config.pm variable)",
2050"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2051"-W enable all warnings",
2052"-X disable all warnings",
fb73857a 2053"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2054"\n",
2055NULL
2056};
76e3520e 2057 char **p = usage_msg;
fb73857a 2058
b0e47665
GS		 2059 PerlIO_printf(PerlIO_stdout(),
2060 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2061 name);
fb73857a 2062 while (*p)
b0e47665 2063 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2064}
2065
79072805
LW		 2066/* This routine handles any switches that can be given during run */
2067
2068char *
864dbfa3 2069Perl_moreswitches(pTHX_ char *s)
79072805 2070{
ba210ebe 2071 STRLEN numlen;
c07a80fd 2072 U32 rschar;
79072805
LW		 2073
2074 switch (*s) {
2075 case '0':
a863c7d1 2076 {
b21ed0a9 2077 numlen = 0; /* disallow underscores */
dff6d3cd 2078 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2079 SvREFCNT_dec(PL_nrs);
c07a80fd 2080 if (rschar & ~((U8)~0))
3280af22 2081 PL_nrs = &PL_sv_undef;
c07a80fd 2082 else if (!rschar && numlen >= 2)
79cb57f6 2083 PL_nrs = newSVpvn("", 0);
c07a80fd 2084 else {
2085 char ch = rschar;
79cb57f6 2086 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2087 }
2088 return s + numlen;
a863c7d1 2089 }
46487f74
GS		 2090 case 'C':
2091 PL_widesyscalls = TRUE;
2092 s++;
2093 return s;
2304df62 2094 case 'F':
3280af22
NIS		 2095 PL_minus_F = TRUE;
2096 PL_splitstr = savepv(s + 1);
2304df62
AD		 2097 s += strlen(s);
2098 return s;
79072805 2099 case 'a':
3280af22 2100 PL_minus_a = TRUE;
79072805
LW		 2101 s++;
2102 return s;
2103 case 'c':
3280af22 2104 PL_minus_c = TRUE;
79072805
LW		 2105 s++;
2106 return s;
2107 case 'd':
bbce6d69 2108 forbid_setid("-d");
4633a7c4 2109 s++;
70c94a19
RR		 2110 /* The following permits -d:Mod to accepts arguments following an =
2111 in the fashion that -MSome::Mod does. */
2112 if (*s == ':' || *s == '=') {
2113 char *start;
2114 SV *sv;
2115 sv = newSVpv("use Devel::", 0);
2116 start = ++s;
2117 /* We now allow -d:Module=Foo,Bar */
2118 while(isALNUM(*s) || *s==':') ++s;
2119 if (*s != '=')
2120 sv_catpv(sv, start);
2121 else {
2122 sv_catpvn(sv, start, s-start);
2123 sv_catpv(sv, " split(/,/,q{");
2124 sv_catpv(sv, ++s);
2125 sv_catpv(sv, "})");
2126 }
4633a7c4 2127 s += strlen(s);
70c94a19 2128 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2129 }
ed094faf 2130 if (!PL_perldb) {
3280af22 2131 PL_perldb = PERLDB_ALL;
a0d0e21e 2132 init_debugger();
ed094faf 2133 }
79072805
LW		 2134 return s;
2135 case 'D':
0453d815 2136 {
79072805 2137#ifdef DEBUGGING
bbce6d69 2138 forbid_setid("-D");
79072805 2139 if (isALPHA(s[1])) {
04932ac8
DM		 2140 /* if adding extra options, remember to update DEBUG_MASK */
2141 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2142 char *d;
2143
93a17b20 2144 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2145 PL_debug |= 1 << (d - debopts);
79072805
LW		 2146 }
2147 else {
3280af22 2148 PL_debug = atoi(s+1);
79072805
LW		 2149 for (s++; isDIGIT(*s); s++) ;
2150 }
aea4f609 2151 PL_debug |= DEBUG_TOP_FLAG;
79072805 2152#else
0453d815
PM		 2153 if (ckWARN_d(WARN_DEBUGGING))
2154 Perl_warner(aTHX_ WARN_DEBUGGING,
2155 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2156 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2157#endif
2158 /*SUPPRESS 530*/
2159 return s;
0453d815 2160 }
4633a7c4 2161 case 'h':
ac27b0f5 2162 usage(PL_origargv[0]);
6ad3d225 2163 PerlProc_exit(0);
79072805 2164 case 'i':
3280af22
NIS		 2165 if (PL_inplace)
2166 Safefree(PL_inplace);
2167 PL_inplace = savepv(s+1);
79072805 2168 /*SUPPRESS 530*/
3280af22 2169 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2170 if (*s) {
fb73857a 2171 *s++ = '\0';
7b8d334a
GS		 2172 if (*s == '-') /* Additional switches on #! line. */
2173 s++;
2174 }
fb73857a 2175 return s;
2176 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2177 forbid_setid("-I");
fb73857a 2178 ++s;
2179 while (*s && isSPACE(*s))
2180 ++s;
2181 if (*s) {
774d564b 2182 char *e, *p;
0df16ed7
GS		 2183 p = s;
2184 /* ignore trailing spaces (possibly followed by other switches) */
2185 do {
2186 for (e = p; *e && !isSPACE(*e); e++) ;
2187 p = e;
2188 while (isSPACE(*p))
2189 p++;
2190 } while (*p && *p != '-');
2191 e = savepvn(s, e-s);
9c8a64f0 2192 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2193 Safefree(e);
2194 s = p;
2195 if (*s == '-')
2196 s++;
79072805
LW		 2197 }
2198 else
a67e862a 2199 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2200 return s;
79072805 2201 case 'l':
3280af22 2202 PL_minus_l = TRUE;
79072805 2203 s++;
7889fe52
NIS		 2204 if (PL_ors_sv) {
2205 SvREFCNT_dec(PL_ors_sv);
2206 PL_ors_sv = Nullsv;
2207 }
79072805 2208 if (isDIGIT(*s)) {
7889fe52 2209 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2210 numlen = 0; /* disallow underscores */
7889fe52 2211 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2212 s += numlen;
2213 }
2214 else {
3280af22 2215 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2216 PL_ors_sv = newSVpvn("\n\n",2);
2217 }
2218 else {
2219 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2220 }
79072805
LW		 2221 }
2222 return s;
1a30305b 2223 case 'M':
bbce6d69 2224 forbid_setid("-M"); /* XXX ? */
1a30305b 2225 /* FALL THROUGH */
2226 case 'm':
bbce6d69 2227 forbid_setid("-m"); /* XXX ? */
1a30305b 2228 if (*++s) {
a5f75d66 2229 char *start;
11343788 2230 SV *sv;
a5f75d66
AD		 2231 char *use = "use ";
2232 /* -M-foo == 'no foo' */
2233 if (*s == '-') { use = "no "; ++s; }
11343788 2234 sv = newSVpv(use,0);
a5f75d66 2235 start = s;
1a30305b 2236 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2237 while(isALNUM(*s) || *s==':') ++s;
2238 if (*s != '=') {
11343788 2239 sv_catpv(sv, start);
c07a80fd 2240 if (*(start-1) == 'm') {
2241 if (*s != '\0')
cea2e8a9 2242 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2243 sv_catpv( sv, " ()");
c07a80fd 2244 }
2245 } else {
6df41af2 2246 if (s == start)
be98fb35
GS		 2247 Perl_croak(aTHX_ "Module name required with -%c option",
2248 s[-1]);
11343788
MB		 2249 sv_catpvn(sv, start, s-start);
2250 sv_catpv(sv, " split(/,/,q{");
2251 sv_catpv(sv, ++s);
2252 sv_catpv(sv, "})");
c07a80fd 2253 }
1a30305b 2254 s += strlen(s);
5c831c24 2255 if (!PL_preambleav)
3280af22
NIS		 2256 PL_preambleav = newAV();
2257 av_push(PL_preambleav, sv);
1a30305b 2258 }
2259 else
cea2e8a9 2260 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2261 return s;
79072805 2262 case 'n':
3280af22 2263 PL_minus_n = TRUE;
79072805
LW		 2264 s++;
2265 return s;
2266 case 'p':
3280af22 2267 PL_minus_p = TRUE;
79072805
LW		 2268 s++;
2269 return s;
2270 case 's':
bbce6d69 2271 forbid_setid("-s");
3280af22 2272 PL_doswitches = TRUE;
79072805
LW		 2273 s++;
2274 return s;
463ee0b2 2275 case 'T':
3280af22 2276 if (!PL_tainting)
cea2e8a9 2277 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2278 s++;
2279 return s;
79072805 2280 case 'u':
bf4acbe4
GS		 2281#ifdef MACOS_TRADITIONAL
2282 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2283#endif
3280af22 2284 PL_do_undump = TRUE;
79072805
LW		 2285 s++;
2286 return s;
2287 case 'U':
3280af22 2288 PL_unsafe = TRUE;
79072805
LW		 2289 s++;
2290 return s;
2291 case 'v':
8e9464f1 2292#if !defined(DGUX)
b0e47665 2293 PerlIO_printf(PerlIO_stdout(),
d2560b70 2294 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2295 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2296#else /* DGUX */
2297/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2298 PerlIO_printf(PerlIO_stdout(),
2299 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2300 PerlIO_printf(PerlIO_stdout(),
2301 Perl_form(aTHX_ " built under %s at %s %s\n",
2302 OSNAME, __DATE__, __TIME__));
2303 PerlIO_printf(PerlIO_stdout(),
2304 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2305 OSVERS));
8e9464f1
JH		 2306#endif /* !DGUX */
2307
fb73857a 2308#if defined(LOCAL_PATCH_COUNT)
2309 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2310 PerlIO_printf(PerlIO_stdout(),
2311 "\n(with %d registered patch%s, "
2312 "see perl -V for more detail)",
2313 (int)LOCAL_PATCH_COUNT,
2314 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2315#endif
1a30305b 2316
b0e47665 2317 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2318 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2319#ifdef MACOS_TRADITIONAL
2320 PerlIO_printf(PerlIO_stdout(),
084592ab 2321 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2322#endif
79072805 2323#ifdef MSDOS
b0e47665
GS		 2324 PerlIO_printf(PerlIO_stdout(),
2325 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2326#endif
2327#ifdef DJGPP
b0e47665
GS		 2328 PerlIO_printf(PerlIO_stdout(),
2329 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2330 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2331#endif
79072805 2332#ifdef OS2
b0e47665
GS		 2333 PerlIO_printf(PerlIO_stdout(),
2334 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2335 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2336#endif
79072805 2337#ifdef atarist
b0e47665
GS		 2338 PerlIO_printf(PerlIO_stdout(),
2339 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2340#endif
a3f9223b 2341#ifdef __BEOS__
b0e47665
GS		 2342 PerlIO_printf(PerlIO_stdout(),
2343 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2344#endif
1d84e8df 2345#ifdef MPE
b0e47665
GS		 2346 PerlIO_printf(PerlIO_stdout(),
2347 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2348#endif
9d116dd7 2349#ifdef OEMVS
b0e47665
GS		 2350 PerlIO_printf(PerlIO_stdout(),
2351 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2352#endif
495c5fdc 2353#ifdef __VOS__
b0e47665
GS		 2354 PerlIO_printf(PerlIO_stdout(),
2355 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2356#endif
092bebab 2357#ifdef __OPEN_VM
b0e47665
GS		 2358 PerlIO_printf(PerlIO_stdout(),
2359 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2360#endif
a1a0e61e 2361#ifdef POSIX_BC
b0e47665
GS		 2362 PerlIO_printf(PerlIO_stdout(),
2363 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2364#endif
61ae2fbf 2365#ifdef __MINT__
b0e47665
GS		 2366 PerlIO_printf(PerlIO_stdout(),
2367 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2368#endif
f83d2536 2369#ifdef EPOC
b0e47665
GS		 2370 PerlIO_printf(PerlIO_stdout(),
2371 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2372#endif
baed7233
DL		 2373#ifdef BINARY_BUILD_NOTICE
2374 BINARY_BUILD_NOTICE;
2375#endif
b0e47665
GS		 2376 PerlIO_printf(PerlIO_stdout(),
2377 "\n\
79072805 2378Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2379GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2380Complete documentation for Perl, including FAQ lists, should be found on\n\
2381this system using `man perl' or `perldoc perl'. If you have access to the\n\
2382Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2383 PerlProc_exit(0);
79072805 2384 case 'w':
599cee73 2385 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2386 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2387 s++;
2388 return s;
2389 case 'W':
ac27b0f5 2390 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2391 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2392 s++;
2393 return s;
2394 case 'X':
ac27b0f5 2395 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2396 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2397 s++;
2398 return s;
a0d0e21e 2399 case '*':
79072805
LW		 2400 case ' ':
2401 if (s[1] == '-') /* Additional switches on #! line. */
2402 return s+2;
2403 break;
a0d0e21e 2404 case '-':
79072805 2405 case 0:
51882d45 2406#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2407 case '\r':
2408#endif
79072805
LW		 2409 case '\n':
2410 case '\t':
2411 break;
aa689395 2412#ifdef ALTERNATE_SHEBANG
2413 case 'S': /* OS/2 needs -S on "extproc" line. */
2414 break;
2415#endif
a0d0e21e 2416 case 'P':
3280af22 2417 if (PL_preprocess)
a0d0e21e
LW		 2418 return s+1;
2419 /* FALL THROUGH */
79072805 2420 default:
cea2e8a9 2421 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2422 }
2423 return Nullch;
2424}
2425
2426/* compliments of Tom Christiansen */
2427
2428/* unexec() can be found in the Gnu emacs distribution */
ee580363 2429/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2430
2431void
864dbfa3 2432Perl_my_unexec(pTHX)
79072805
LW		 2433{
2434#ifdef UNEXEC
46fc3d4c 2435 SV* prog;
2436 SV* file;
ee580363 2437 int status = 1;
79072805
LW		 2438 extern int etext;
2439
ee580363 2440 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2441 sv_catpv(prog, "/perl");
6b88bc9c 2442 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2443 sv_catpv(file, ".perldump");
79072805 2444
ee580363
GS		 2445 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2446 /* unexec prints msg to stderr in case of failure */
6ad3d225 2447 PerlProc_exit(status);
79072805 2448#else
a5f75d66
AD		 2449# ifdef VMS
2450# include <lib$routines.h>
2451 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2452# else
79072805 2453 ABORT(); /* for use with undump */
aa689395 2454# endif
a5f75d66 2455#endif
79072805
LW		 2456}
2457
cb68f92d
GS		 2458/* initialize curinterp */
2459STATIC void
cea2e8a9 2460S_init_interp(pTHX)
cb68f92d
GS		 2461{
2462
066ef5b5 2463#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2464#define I_REINIT \
6b88bc9c
GS		 2465 STMT_START { \
2466 PL_chopset = " \n-"; \
2467 PL_copline = NOLINE; \
2468 PL_curcop = &PL_compiling;\
2469 PL_curcopdb = NULL; \
2470 PL_dbargs = 0; \
3967c732 2471 PL_dumpindent = 4; \
6b88bc9c
GS		 2472 PL_laststatval = -1; \
2473 PL_laststype = OP_STAT; \
2474 PL_maxscream = -1; \
2475 PL_maxsysfd = MAXSYSFD; \
2476 PL_statname = Nullsv; \
2477 PL_tmps_floor = -1; \
2478 PL_tmps_ix = -1; \
2479 PL_op_mask = NULL; \
6b88bc9c
GS		 2480 PL_laststatval = -1; \
2481 PL_laststype = OP_STAT; \
2482 PL_mess_sv = Nullsv; \
2483 PL_splitstr = " "; \
2484 PL_generation = 100; \
2485 PL_exitlist = NULL; \
2486 PL_exitlistlen = 0; \
2487 PL_regindent = 0; \
2488 PL_in_clean_objs = FALSE; \
2489 PL_in_clean_all = FALSE; \
2490 PL_profiledata = NULL; \
2491 PL_rsfp = Nullfp; \
2492 PL_rsfp_filters = Nullav; \
24d3c518 2493 PL_dirty = FALSE; \
cb68f92d 2494 } STMT_END
9666903d 2495 I_REINIT;
066ef5b5
GS		 2496#else
2497# ifdef MULTIPLICITY
2498# define PERLVAR(var,type)
51371543 2499# define PERLVARA(var,n,type)
cea2e8a9 2500# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2501# if defined(USE_THREADS)
2502# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2503# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2504# else /* !USE_THREADS */
2505# define PERLVARI(var,type,init) aTHX->var = init;
2506# define PERLVARIC(var,type,init) aTHX->var = init;
2507# endif /* USE_THREADS */
cea2e8a9 2508# else
c5be433b
GS		 2509# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2510# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2511# endif
066ef5b5
GS		 2512# include "intrpvar.h"
2513# ifndef USE_THREADS
2514# include "thrdvar.h"
2515# endif
2516# undef PERLVAR
51371543 2517# undef PERLVARA
066ef5b5
GS		 2518# undef PERLVARI
2519# undef PERLVARIC
3967c732 2520# else
066ef5b5 2521# define PERLVAR(var,type)
51371543 2522# define PERLVARA(var,n,type)
533c011a
NIS		 2523# define PERLVARI(var,type,init) PL_##var = init;
2524# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2525# include "intrpvar.h"
2526# ifndef USE_THREADS
2527# include "thrdvar.h"
2528# endif
2529# undef PERLVAR
51371543 2530# undef PERLVARA
066ef5b5
GS		 2531# undef PERLVARI
2532# undef PERLVARIC
2533# endif
cb68f92d
GS		 2534#endif
2535
cb68f92d
GS		 2536}
2537
76e3520e 2538STATIC void
cea2e8a9 2539S_init_main_stash(pTHX)
79072805 2540{
463ee0b2 2541 GV *gv;
6e72f9df 2542
2543 /* Note that strtab is a rather special HV. Assumptions are made
2544 about not iterating on it, and not adding tie magic to it.
2545 It is properly deallocated in perl_destruct() */
3280af22 2546 PL_strtab = newHV();
5f08fbcd
GS		 2547#ifdef USE_THREADS
2548 MUTEX_INIT(&PL_strtab_mutex);
2549#endif
3280af22
NIS		 2550 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2551 hv_ksplit(PL_strtab, 512);
ac27b0f5 2552
3280af22 2553 PL_curstash = PL_defstash = newHV();
79cb57f6 2554 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2555 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2556 SvREFCNT_dec(GvHV(gv));
3280af22 2557 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2558 SvREADONLY_on(gv);
3280af22
NIS		 2559 HvNAME(PL_defstash) = savepv("main");
2560 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2561 GvMULTI_on(PL_incgv);
2562 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2563 GvMULTI_on(PL_hintgv);
2564 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2565 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2566 GvMULTI_on(PL_errgv);
2567 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2568 GvMULTI_on(PL_replgv);
cea2e8a9 2569 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2570 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2571 sv_setpvn(ERRSV, "", 0);
3280af22 2572 PL_curstash = PL_defstash;
11faa288 2573 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2574 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2575 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2576 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2577 /* We must init $/ before switches are processed. */
864dbfa3 2578 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2579}
2580
76e3520e 2581STATIC void
cea2e8a9 2582S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2583{
6c4ab083 2584 *fdscript = -1;
79072805 2585
3280af22
NIS		 2586 if (PL_e_script) {
2587 PL_origfilename = savepv("-e");
96436eeb 2588 }
6c4ab083
GS		 2589 else {
2590 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2591 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2592
2593 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2594 char *s = scriptname + 8;
2595 *fdscript = atoi(s);
2596 while (isDIGIT(*s))
2597 s++;
2598 if (*s) {
2599 scriptname = savepv(s + 1);
3280af22
NIS		 2600 Safefree(PL_origfilename);
2601 PL_origfilename = scriptname;
6c4ab083
GS		 2602 }
2603 }
2604 }
2605
f4dd75d9
GS		 2606#ifdef USE_ITHREADS
2607 Safefree(CopFILE(PL_curcop));
2608#else
2609 SvREFCNT_dec(CopFILEGV(PL_curcop));
2610#endif
57843af0 2611 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2612 if (strEQ(PL_origfilename,"-"))
79072805 2613 scriptname = "";
01f988be 2614 if (*fdscript >= 0) {
3280af22 2615 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2616#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2617 if (PL_rsfp)
2618 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2619#endif
2620 }
3280af22 2621 else if (PL_preprocess) {
46fc3d4c 2622 char *cpp_cfg = CPPSTDIN;
79cb57f6 2623 SV *cpp = newSVpvn("",0);
46fc3d4c 2624 SV *cmd = NEWSV(0,0);
2625
2626 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2627 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2628 sv_catpv(cpp, cpp_cfg);
79072805 2629
0df16ed7 2630 sv_catpvn(sv, "-I", 2);
fed7345c 2631 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2632
14953ddc
MB		 2633 DEBUG_P(PerlIO_printf(Perl_debug_log,
2634 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2635 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2636#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2637 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2638sed %s -e \"/^[^#]/b\" \
2639 -e \"/^#[ ]*include[ ]/b\" \
2640 -e \"/^#[ ]*define[ ]/b\" \
2641 -e \"/^#[ ]*if[ ]/b\" \
2642 -e \"/^#[ ]*ifdef[ ]/b\" \
2643 -e \"/^#[ ]*ifndef[ ]/b\" \
2644 -e \"/^#[ ]*else/b\" \
2645 -e \"/^#[ ]*elif[ ]/b\" \
2646 -e \"/^#[ ]*undef[ ]/b\" \
2647 -e \"/^#[ ]*endif/b\" \
2648 -e \"s/^#.*//\" \
894356b3 2649 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2650 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2651#else
092bebab 2652# ifdef __OPEN_VM
cea2e8a9 2653 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2654%s %s -e '/^[^#]/b' \
2655 -e '/^#[ ]*include[ ]/b' \
2656 -e '/^#[ ]*define[ ]/b' \
2657 -e '/^#[ ]*if[ ]/b' \
2658 -e '/^#[ ]*ifdef[ ]/b' \
2659 -e '/^#[ ]*ifndef[ ]/b' \
2660 -e '/^#[ ]*else/b' \
2661 -e '/^#[ ]*elif[ ]/b' \
2662 -e '/^#[ ]*undef[ ]/b' \
2663 -e '/^#[ ]*endif/b' \
2664 -e 's/^[ ]*#.*//' \
894356b3 2665 %s | %"SVf" %"SVf" %s",
092bebab 2666# else
cea2e8a9 2667 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2668%s %s -e '/^[^#]/b' \
2669 -e '/^#[ ]*include[ ]/b' \
2670 -e '/^#[ ]*define[ ]/b' \
2671 -e '/^#[ ]*if[ ]/b' \
2672 -e '/^#[ ]*ifdef[ ]/b' \
2673 -e '/^#[ ]*ifndef[ ]/b' \
2674 -e '/^#[ ]*else/b' \
2675 -e '/^#[ ]*elif[ ]/b' \
2676 -e '/^#[ ]*undef[ ]/b' \
2677 -e '/^#[ ]*endif/b' \
2678 -e 's/^[ ]*#.*//' \
894356b3 2679 %s | %"SVf" -C %"SVf" %s",
092bebab 2680# endif
79072805
LW		 2681#ifdef LOC_SED
2682 LOC_SED,
2683#else
2684 "sed",
2685#endif
3280af22 2686 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2687#endif
46fc3d4c 2688 scriptname, cpp, sv, CPPMINUS);
3280af22 2689 PL_doextract = FALSE;
79072805 2690#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2691 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2692#ifdef HAS_SETEUID
b28d0864 2693 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2694#else
2695#ifdef HAS_SETREUID
b28d0864 2696 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2697#else
2698#ifdef HAS_SETRESUID
b28d0864 2699 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2700#else
b28d0864 2701 PerlProc_setuid(PL_uid);
79072805
LW		 2702#endif
2703#endif
85e6fe83 2704#endif
b28d0864 2705 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2706 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2707 }
2708#endif /* IAMSUID */
3280af22 2709 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2710 SvREFCNT_dec(cmd);
2711 SvREFCNT_dec(cpp);
79072805
LW		 2712 }
2713 else if (!*scriptname) {
bbce6d69 2714 forbid_setid("program input from stdin");
3280af22 2715 PL_rsfp = PerlIO_stdin();
79072805 2716 }
96436eeb 2717 else {
3280af22 2718 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2719#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2720 if (PL_rsfp)
2721 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2722#endif
2723 }
3280af22 2724 if (!PL_rsfp) {
13281fa4 2725#ifdef DOSUID
a687059c 2726#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2727 if (PL_euid &&
cc49e20b 2728 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2729 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2730 {
46fc3d4c 2731 /* try again */
a7cb1f99 2732 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2733 (int)PERL_REVISION, (int)PERL_VERSION,
2734 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2735 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2736 }
2737#endif
2738#endif
584d69ec
JH		 2739#ifdef IAMSUID
2740 errno = EPERM;
2741 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2742 Strerror(errno));
2743#else
cea2e8a9 2744 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2745 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2746#endif
13281fa4 2747 }
79072805 2748}
8d063cd8 2749
7b89560d
JH		 2750/* Mention
2751 * I_SYSSTATVFS HAS_FSTATVFS
2752 * I_SYSMOUNT
c890dc6c 2753 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2754 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2755 * here so that metaconfig picks them up. */
2756
104d25b7 2757#ifdef IAMSUID
864dbfa3 2758STATIC int
e688b231 2759S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2760{
0545a864
JH		 2761 int check_okay = 0; /* able to do all the required sys/libcalls */
2762 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2763/*
ad27e871 2764 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2765 * fstatvfs() is UNIX98.
0545a864 2766 * fstatfs() is 4.3 BSD.
ad27e871 2767 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2768 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2769 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2770 */
2771
6439433f
JH		 2772#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2773
2774# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2775 defined(HAS_FSTATVFS)
2776# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2777 struct statvfs stfs;
6439433f 2778
104d25b7
JH		 2779 check_okay = fstatvfs(fd, &stfs) == 0;
2780 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2781# endif /* fstatvfs */
ac27b0f5 2782
6439433f
JH		 2783# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2784 defined(PERL_MOUNT_NOSUID) && \
2785 defined(HAS_FSTATFS) && \
2786 defined(HAS_STRUCT_STATFS) && \
2787 defined(HAS_STRUCT_STATFS_F_FLAGS)
2788# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2789 struct statfs stfs;
6439433f 2790
104d25b7 2791 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2792 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2793# endif /* fstatfs */
2794
2795# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2796 defined(PERL_MOUNT_NOSUID) && \
2797 defined(HAS_FSTAT) && \
2798 defined(HAS_USTAT) && \
2799 defined(HAS_GETMNT) && \
2800 defined(HAS_STRUCT_FS_DATA) && \
2801 defined(NOSTAT_ONE)
2802# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2803 struct stat fdst;
6439433f 2804
0545a864 2805 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2806 struct ustat us;
2807 if (ustat(fdst.st_dev, &us) == 0) {
2808 struct fs_data fsd;
2809 /* NOSTAT_ONE here because we're not examining fields which
2810 * vary between that case and STAT_ONE. */
ad27e871 2811 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2812 size_t cmplen = sizeof(us.f_fname);
2813 if (sizeof(fsd.fd_req.path) < cmplen)
2814 cmplen = sizeof(fsd.fd_req.path);
2815 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2816 fdst.st_dev == fsd.fd_req.dev) {
2817 check_okay = 1;
2818 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2819 }
2820 }
2821 }
2822 }
0545a864 2823 }
6439433f
JH		 2824# endif /* fstat+ustat+getmnt */
2825
2826# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2827 defined(HAS_GETMNTENT) && \
2828 defined(HAS_HASMNTOPT) && \
2829 defined(MNTOPT_NOSUID)
2830# define FD_ON_NOSUID_CHECK_OKAY
2831 FILE *mtab = fopen("/etc/mtab", "r");
2832 struct mntent *entry;
2833 struct stat stb, fsb;
104d25b7
JH		 2834
2835 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2836 while (entry = getmntent(mtab)) {
2837 if (stat(entry->mnt_dir, &fsb) == 0
2838 && fsb.st_dev == stb.st_dev)
2839 {
2840 /* found the filesystem */
2841 check_okay = 1;
2842 if (hasmntopt(entry, MNTOPT_NOSUID))
2843 on_nosuid = 1;
2844 break;
2845 } /* A single fs may well fail its stat(). */
2846 }
104d25b7
JH		 2847 }
2848 if (mtab)
6439433f
JH		 2849 fclose(mtab);
2850# endif /* getmntent+hasmntopt */
0545a864 2851
ac27b0f5 2852 if (!check_okay)
0545a864 2853 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2854 return on_nosuid;
2855}
2856#endif /* IAMSUID */
2857
76e3520e 2858STATIC void
cea2e8a9 2859S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2860{
155aba94 2861#ifdef IAMSUID
96436eeb 2862 int which;
155aba94 2863#endif
96436eeb 2864
13281fa4
LW		 2865 /* do we need to emulate setuid on scripts? */
2866
2867 /* This code is for those BSD systems that have setuid #! scripts disabled
2868 * in the kernel because of a security problem. Merely defining DOSUID
2869 * in perl will not fix that problem, but if you have disabled setuid
2870 * scripts in the kernel, this will attempt to emulate setuid and setgid
2871 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2872 * root version must be called suidperl or sperlN.NNN. If regular perl
2873 * discovers that it has opened a setuid script, it calls suidperl with
2874 * the same argv that it had. If suidperl finds that the script it has
2875 * just opened is NOT setuid root, it sets the effective uid back to the
2876 * uid. We don't just make perl setuid root because that loses the
2877 * effective uid we had before invoking perl, if it was different from the
2878 * uid.
13281fa4
LW		 2879 *
2880 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2881 * be defined in suidperl only. suidperl must be setuid root. The
2882 * Configure script will set this up for you if you want it.
2883 */
a687059c 2884
13281fa4 2885#ifdef DOSUID
6e72f9df 2886 char *s, *s2;
a0d0e21e 2887
b28d0864 2888 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2889 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2890 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2891 I32 len;
2d8e6c8d 2892 STRLEN n_a;
13281fa4 2893
a687059c 2894#ifdef IAMSUID
fe14fcc3 2895#ifndef HAS_SETREUID
a687059c
LW		 2896 /* On this access check to make sure the directories are readable,
2897 * there is actually a small window that the user could use to make
2898 * filename point to an accessible directory. So there is a faint
2899 * chance that someone could execute a setuid script down in a
2900 * non-accessible directory. I don't know what to do about that.
2901 * But I don't think it's too important. The manual lies when
2902 * it says access() is useful in setuid programs.
2903 */
cc49e20b 2904 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2905 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2906#else
2907 /* If we can swap euid and uid, then we can determine access rights
2908 * with a simple stat of the file, and then compare device and
2909 * inode to make sure we did stat() on the same file we opened.
2910 * Then we just have to make sure he or she can execute it.
2911 */
2912 {
2913 struct stat tmpstatbuf;
2914
85e6fe83
LW		 2915 if (
2916#ifdef HAS_SETREUID
b28d0864 2917 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2918#else
2919# if HAS_SETRESUID
b28d0864 2920 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2921# endif
85e6fe83 2922#endif
b28d0864 2923 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2924 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2925 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2926 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2927#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2928 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2929 Perl_croak(aTHX_ "Permission denied");
104d25b7 2930#endif
b28d0864
NIS		 2931 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2932 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2933 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2934 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2935 }
85e6fe83
LW		 2936 if (
2937#ifdef HAS_SETREUID
b28d0864 2938 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2939#else
2940# if defined(HAS_SETRESUID)
b28d0864 2941 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2942# endif
85e6fe83 2943#endif
b28d0864 2944 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2945 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2946 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2947 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2948 }
fe14fcc3 2949#endif /* HAS_SETREUID */
a687059c
LW		 2950#endif /* IAMSUID */
2951
b28d0864 2952 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2953 Perl_croak(aTHX_ "Permission denied");
b28d0864 2954 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2955 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2956 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2957 CopLINE_inc(PL_curcop);
6b88bc9c 2958 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2959 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2960 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2961 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2962 if (*s == ' ') s++;
45d8adaa 2963 while (!isSPACE(*s)) s++;
2d8e6c8d 2964 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2965 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2966 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2967 Perl_croak(aTHX_ "Not a perl script");
a687059c 2968 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2969 /*
2970 * #! arg must be what we saw above. They can invoke it by
2971 * mentioning suidperl explicitly, but they may not add any strange
2972 * arguments beyond what #! says if they do invoke suidperl that way.
2973 */
2974 len = strlen(validarg);
2975 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2976 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2977 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2978
2979#ifndef IAMSUID
b28d0864
NIS		 2980 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2981 PL_euid == PL_statbuf.st_uid)
2982 if (!PL_do_undump)
cea2e8a9 2983 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2984FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2985#endif /* IAMSUID */
13281fa4 2986
b28d0864
NIS		 2987 if (PL_euid) { /* oops, we're not the setuid root perl */
2988 (void)PerlIO_close(PL_rsfp);
13281fa4 2989#ifndef IAMSUID
46fc3d4c 2990 /* try again */
a7cb1f99 2991 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2992 (int)PERL_REVISION, (int)PERL_VERSION,
2993 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2994#endif
cea2e8a9 2995 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2996 }
2997
b28d0864 2998 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2999#ifdef HAS_SETEGID
b28d0864 3000 (void)setegid(PL_statbuf.st_gid);
a687059c 3001#else
fe14fcc3 3002#ifdef HAS_SETREGID
b28d0864 3003 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3004#else
3005#ifdef HAS_SETRESGID
b28d0864 3006 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3007#else
b28d0864 3008 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3009#endif
3010#endif
85e6fe83 3011#endif
b28d0864 3012 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3013 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3014 }
b28d0864
NIS		 3015 if (PL_statbuf.st_mode & S_ISUID) {
3016 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3017#ifdef HAS_SETEUID
b28d0864 3018 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3019#else
fe14fcc3 3020#ifdef HAS_SETREUID
b28d0864 3021 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3022#else
3023#ifdef HAS_SETRESUID
b28d0864 3024 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3025#else
b28d0864 3026 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3027#endif
3028#endif
85e6fe83 3029#endif
b28d0864 3030 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3031 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3032 }
b28d0864 3033 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3034#ifdef HAS_SETEUID
b28d0864 3035 (void)seteuid((Uid_t)PL_uid);
a687059c 3036#else
fe14fcc3 3037#ifdef HAS_SETREUID
b28d0864 3038 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3039#else
85e6fe83 3040#ifdef HAS_SETRESUID
b28d0864 3041 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3042#else
b28d0864 3043 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3044#endif
a687059c
LW		 3045#endif
3046#endif
b28d0864 3047 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3048 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3049 }
748a9306 3050 init_ids();
b28d0864 3051 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3052 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3053 }
3054#ifdef IAMSUID
6b88bc9c 3055 else if (PL_preprocess)
cea2e8a9 3056 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3057 else if (fdscript >= 0)
cea2e8a9 3058 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3059 else
cea2e8a9 3060 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3061
3062 /* We absolutely must clear out any saved ids here, so we */
3063 /* exec the real perl, substituting fd script for scriptname. */
3064 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3065 PerlIO_rewind(PL_rsfp);
3066 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3067 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3068 if (!PL_origargv[which])
cea2e8a9
GS		 3069 Perl_croak(aTHX_ "Permission denied");
3070 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3071 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3072#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3073 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3074#endif
a7cb1f99 3075 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3076 (int)PERL_REVISION, (int)PERL_VERSION,
3077 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3078 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3079#endif /* IAMSUID */
a687059c 3080#else /* !DOSUID */
3280af22 3081 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3082#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3083 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3084 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3085 ||
b28d0864 3086 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3087 )
b28d0864 3088 if (!PL_do_undump)
cea2e8a9 3089 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3090FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3091#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3092 /* not set-id, must be wrapped */
a687059c 3093 }
13281fa4 3094#endif /* DOSUID */
79072805 3095}
13281fa4 3096
76e3520e 3097STATIC void
cea2e8a9 3098S_find_beginning(pTHX)
79072805 3099{
6e72f9df 3100 register char *s, *s2;
33b78306
LW		 3101
3102 /* skip forward in input to the real script? */
3103
bbce6d69 3104 forbid_setid("-x");
bf4acbe4 3105#ifdef MACOS_TRADITIONAL
084592ab 3106 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3107
bf4acbe4
GS		 3108 while (PL_doextract || gMacPerl_AlwaysExtract) {
3109 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3110 if (!gMacPerl_AlwaysExtract)
3111 Perl_croak(aTHX_ "No Perl script found in input\n");
3112
3113 if (PL_doextract) /* require explicit override ? */
3114 if (!OverrideExtract(PL_origfilename))
3115 Perl_croak(aTHX_ "User aborted script\n");
3116 else
3117 PL_doextract = FALSE;
3118
3119 /* Pater peccavi, file does not have #! */
3120 PerlIO_rewind(PL_rsfp);
ac27b0f5 3121
bf4acbe4
GS		 3122 break;
3123 }
3124#else
3280af22
NIS		 3125 while (PL_doextract) {
3126 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3127 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3128#endif
6e72f9df 3129 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3130 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3131 PL_doextract = FALSE;
6e72f9df 3132 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3133 s2 = s;
3134 while (*s == ' ' || *s == '\t') s++;
3135 if (*s++ == '-') {
3136 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3137 if (strnEQ(s2-4,"perl",4))
3138 /*SUPPRESS 530*/
155aba94
GS		 3139 while ((s = moreswitches(s)))
3140 ;
33b78306 3141 }
83025b21
LW		 3142 }
3143 }
3144}
3145
afe37c7d 3146
76e3520e 3147STATIC void
cea2e8a9 3148S_init_ids(pTHX)
352d5a3a 3149{
d8eceb89
JH		 3150 PL_uid = PerlProc_getuid();
3151 PL_euid = PerlProc_geteuid();
3152 PL_gid = PerlProc_getgid();
3153 PL_egid = PerlProc_getegid();
748a9306 3154#ifdef VMS
b28d0864
NIS		 3155 PL_uid |= PL_gid << 16;
3156 PL_euid |= PL_egid << 16;
748a9306 3157#endif
3280af22 3158 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3159}
79072805 3160
76e3520e 3161STATIC void
cea2e8a9 3162S_forbid_setid(pTHX_ char *s)
bbce6d69 3163{
3280af22 3164 if (PL_euid != PL_uid)
cea2e8a9 3165 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3166 if (PL_egid != PL_gid)
cea2e8a9 3167 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3168}
3169
1ee4443e
IZ		 3170void
3171Perl_init_debugger(pTHX)
748a9306 3172{
1ee4443e
IZ		 3173 HV *ostash = PL_curstash;
3174
3280af22
NIS		 3175 PL_curstash = PL_debstash;
3176 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3177 AvREAL_off(PL_dbargs);
3178 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3179 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3180 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3181 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3182 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3183 sv_setiv(PL_DBsingle, 0);
3280af22 3184 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3185 sv_setiv(PL_DBtrace, 0);
3280af22 3186 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3187 sv_setiv(PL_DBsignal, 0);
1ee4443e 3188 PL_curstash = ostash;
352d5a3a
LW		 3189}
3190
2ce36478
SM		 3191#ifndef STRESS_REALLOC
3192#define REASONABLE(size) (size)
3193#else
3194#define REASONABLE(size) (1) /* unreasonable */
3195#endif
3196
11343788 3197void
cea2e8a9 3198Perl_init_stacks(pTHX)
79072805 3199{
e336de0d 3200 /* start with 128-item stack and 8K cxstack */
3280af22 3201 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3202 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3203 PL_curstackinfo->si_type = PERLSI_MAIN;
3204 PL_curstack = PL_curstackinfo->si_stack;
3205 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3206
3280af22
NIS		 3207 PL_stack_base = AvARRAY(PL_curstack);
3208 PL_stack_sp = PL_stack_base;
3209 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3210
3280af22
NIS		 3211 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3212 PL_tmps_floor = -1;
3213 PL_tmps_ix = -1;
3214 PL_tmps_max = REASONABLE(128);
8990e307 3215
3280af22
NIS		 3216 New(54,PL_markstack,REASONABLE(32),I32);
3217 PL_markstack_ptr = PL_markstack;
3218 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3219
ce2f7c3b 3220 SET_MARK_OFFSET;
e336de0d 3221
3280af22
NIS		 3222 New(54,PL_scopestack,REASONABLE(32),I32);
3223 PL_scopestack_ix = 0;
3224 PL_scopestack_max = REASONABLE(32);
79072805 3225
3280af22
NIS		 3226 New(54,PL_savestack,REASONABLE(128),ANY);
3227 PL_savestack_ix = 0;
3228 PL_savestack_max = REASONABLE(128);
79072805 3229
3280af22
NIS		 3230 New(54,PL_retstack,REASONABLE(16),OP*);
3231 PL_retstack_ix = 0;
3232 PL_retstack_max = REASONABLE(16);
378cc40b 3233}
33b78306 3234
2ce36478
SM		 3235#undef REASONABLE
3236
76e3520e 3237STATIC void
cea2e8a9 3238S_nuke_stacks(pTHX)
6e72f9df 3239{
3280af22
NIS		 3240 while (PL_curstackinfo->si_next)
3241 PL_curstackinfo = PL_curstackinfo->si_next;
3242 while (PL_curstackinfo) {
3243 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3244 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3245 Safefree(PL_curstackinfo->si_cxstack);
3246 Safefree(PL_curstackinfo);
3247 PL_curstackinfo = p;
e336de0d 3248 }
3280af22
NIS		 3249 Safefree(PL_tmps_stack);
3250 Safefree(PL_markstack);
3251 Safefree(PL_scopestack);
3252 Safefree(PL_savestack);
3253 Safefree(PL_retstack);
378cc40b 3254}
33b78306 3255
76e3520e 3256#ifndef PERL_OBJECT
760ac839 3257static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3258#endif
7aa04957 3259
76e3520e 3260STATIC void
cea2e8a9 3261S_init_lexer(pTHX)
8990e307 3262{
76e3520e
GS		 3263#ifdef PERL_OBJECT
3264 PerlIO *tmpfp;
3265#endif
3280af22
NIS		 3266 tmpfp = PL_rsfp;
3267 PL_rsfp = Nullfp;
3268 lex_start(PL_linestr);
3269 PL_rsfp = tmpfp;
79cb57f6 3270 PL_subname = newSVpvn("main",4);
8990e307
LW		 3271}
3272
76e3520e 3273STATIC void
cea2e8a9 3274S_init_predump_symbols(pTHX)
45d8adaa 3275{
93a17b20 3276 GV *tmpgv;
af8c498a 3277 IO *io;
79072805 3278
864dbfa3 3279 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3280 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3281 GvMULTI_on(PL_stdingv);
af8c498a 3282 io = GvIOp(PL_stdingv);
a04651f4 3283 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3284 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3285 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3286 GvMULTI_on(tmpgv);
af8c498a 3287 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3288
85e6fe83 3289 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3290 GvMULTI_on(tmpgv);
af8c498a 3291 io = GvIOp(tmpgv);
a04651f4 3292 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3293 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3294 setdefout(tmpgv);
adbc6bb1 3295 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3296 GvMULTI_on(tmpgv);
af8c498a 3297 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3298
bf49b057
GS		 3299 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3300 GvMULTI_on(PL_stderrgv);
3301 io = GvIOp(PL_stderrgv);
a04651f4 3302 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3303 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3304 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3305 GvMULTI_on(tmpgv);
af8c498a 3306 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3307
3280af22 3308 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3309
bf4acbe4
GS		 3310 if (PL_osname)
3311 Safefree(PL_osname);
3312 PL_osname = savepv(OSNAME);
79072805 3313}
33b78306 3314
76e3520e 3315STATIC void
cea2e8a9 3316S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3317{
79072805
LW		 3318 char *s;
3319 SV *sv;
3320 GV* tmpgv;
9cbac4c7 3321#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3322 char **dup_env_base = 0;
103a7189 3323 int dup_env_count = 0;
9cbac4c7 3324#endif
fe14fcc3 3325
79072805 3326 argc--,argv++; /* skip name of script */
3280af22 3327 if (PL_doswitches) {
79072805
LW		 3328 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3329 if (!argv[0][1])
3330 break;
379d538a 3331 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3332 argc--,argv++;
3333 break;
3334 }
155aba94 3335 if ((s = strchr(argv[0], '='))) {
79072805 3336 *s++ = '\0';
85e6fe83 3337 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3338 }
3339 else
85e6fe83 3340 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3341 }
79072805 3342 }
3280af22
NIS		 3343 PL_toptarget = NEWSV(0,0);
3344 sv_upgrade(PL_toptarget, SVt_PVFM);
3345 sv_setpvn(PL_toptarget, "", 0);
3346 PL_bodytarget = NEWSV(0,0);
3347 sv_upgrade(PL_bodytarget, SVt_PVFM);
3348 sv_setpvn(PL_bodytarget, "", 0);
3349 PL_formtarget = PL_bodytarget;
79072805 3350
bbce6d69 3351 TAINT;
155aba94 3352 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3353#ifdef MACOS_TRADITIONAL
3354 /* $0 is not majick on a Mac */
3355 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3356#else
3280af22 3357 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3358 magicname("0", "0", 1);
bf4acbe4 3359#endif
79072805 3360 }
155aba94 3361 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3362#ifdef OS2
23da6c43 3363 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3364#else
3280af22 3365 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3366#endif
155aba94 3367 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3368 GvMULTI_on(PL_argvgv);
3369 (void)gv_AVadd(PL_argvgv);
3370 av_clear(GvAVn(PL_argvgv));
79072805 3371 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3372 SV *sv = newSVpv(argv[0],0);
3373 av_push(GvAVn(PL_argvgv),sv);
3374 if (PL_widesyscalls)
e84ff256 3375 (void)sv_utf8_decode(sv);
79072805
LW		 3376 }
3377 }
155aba94 3378 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3379 HV *hv;
3280af22
NIS		 3380 GvMULTI_on(PL_envgv);
3381 hv = GvHVn(PL_envgv);
14befaf4 3382 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3383#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3384 /* Note that if the supplied env parameter is actually a copy
3385 of the global environ then it may now point to free'd memory
3386 if the environment has been modified since. To avoid this
3387 problem we treat env==NULL as meaning 'use the default'
3388 */
3389 if (!env)
3390 env = environ;
5aabfad6 3391 if (env != environ)
79072805 3392 environ[0] = Nullch;
103a7189
JH		 3393#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3394 {
3395 char **env_base;
9041c2e3 3396 for (env_base = env; *env; env++)
103a7189
JH		 3397 dup_env_count++;
3398 if ((dup_env_base = (char **)
480bfd1e 3399 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3400 char **dup_env;
3401 for (env = env_base, dup_env = dup_env_base;
3402 *env;
480bfd1e
JH		 3403 env++, dup_env++) {
3404 /* With environ one needs to use safesysmalloc(). */
3405 *dup_env = safesysmalloc(strlen(*env) + 1);
3406 (void)strcpy(*dup_env, *env);
3407 }
103a7189
JH		 3408 *dup_env = Nullch;
3409 env = dup_env_base;
3410 } /* else what? */
3411 }
3412#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3413 for (; *env; env++) {
93a17b20 3414 if (!(s = strchr(*env,'=')))
79072805
LW		 3415 continue;
3416 *s++ = '\0';
60ce6247 3417#if defined(MSDOS)
137443ea 3418 (void)strupr(*env);
3419#endif
79072805
LW		 3420 sv = newSVpv(s--,0);
3421 (void)hv_store(hv, *env, s - *env, sv, 0);
3422 *s = '=';
fe14fcc3 3423 }
480bfd1e 3424#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3425 if (dup_env_base) {
3426 char **dup_env;
3427 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3428 safesysfree(*dup_env);
3429 safesysfree(dup_env_base);
103a7189 3430 }
7e0f6a1f 3431#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3432#endif /* USE_ENVIRON_ARRAY */
4550b24a 3433#ifdef DYNAMIC_ENV_FETCH
3434 HvNAME(hv) = savepv(ENV_HV_NAME);
3435#endif
79072805 3436 }
bbce6d69 3437 TAINT_NOT;
155aba94 3438 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3439 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3440}
34de22dd 3441
76e3520e 3442STATIC void
cea2e8a9 3443S_init_perllib(pTHX)
34de22dd 3444{
85e6fe83 3445 char *s;
3280af22 3446 if (!PL_tainting) {
552a7a9b 3447#ifndef VMS
76e3520e 3448 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3449 if (s)
9c8a64f0 3450 incpush(s, TRUE, TRUE);
85e6fe83 3451 else
9c8a64f0 3452 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3453#else /* VMS */
3454 /* Treat PERL5?LIB as a possible search list logical name -- the
3455 * "natural" VMS idiom for a Unix path string. We allow each
3456 * element to be a set of |-separated directories for compatibility.
3457 */
3458 char buf[256];