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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 */
8990e307 303 I32 last_sv_count;
a0d0e21e 304 HV *hv;
1f2bfc8a 305#ifdef USE_THREADS
33f46ff6 306 Thread t;
cea2e8a9 307 dTHX;
1f2bfc8a 308#endif /* USE_THREADS */
8990e307 309
7766f137
GS		 310 /* wait for all pseudo-forked children to finish */
311 PERL_WAIT_FOR_CHILDREN;
312
11343788 313#ifdef USE_THREADS
0f15f207 314#ifndef FAKE_THREADS
8023c3ce
MB		 315 /* Pass 1 on any remaining threads: detach joinables, join zombies */
316 retry_cleanup:
533c011a 317 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 318 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 319 "perl_destruct: waiting for %d threads...\n",
533c011a 320 PL_nthreads - 1));
33f46ff6 321 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 322 MUTEX_LOCK(&t->mutex);
323 switch (ThrSTATE(t)) {
324 AV *av;
c7848ba1 325 case THRf_ZOMBIE:
bf49b057 326 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 327 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 328 ThrSETSTATE(t, THRf_DEAD);
329 MUTEX_UNLOCK(&t->mutex);
533c011a 330 PL_nthreads--;
8023c3ce
MB		 331 /*
332 * The SvREFCNT_dec below may take a long time (e.g. av
333 * may contain an object scalar whose destructor gets
334 * called) so we have to unlock threads_mutex and start
335 * all over again.
336 */
533c011a 337 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 338 JOIN(t, &av);
605e5515 339 SvREFCNT_dec((SV*)av);
bf49b057 340 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 341 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 342 goto retry_cleanup;
c7848ba1 343 case THRf_R_JOINABLE:
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 345 "perl_destruct: detaching thread %p\n", t));
346 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 347 /*
c7848ba1
MB		 348 * We unlock threads_mutex and t->mutex in the opposite order
349 * from which we locked them just so that DETACH won't
350 * deadlock if it panics. It's only a breach of good style
351 * not a bug since they are unlocks not locks.
352 */
533c011a 353 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 354 DETACH(t);
355 MUTEX_UNLOCK(&t->mutex);
8023c3ce 356 goto retry_cleanup;
c7848ba1 357 default:
bf49b057 358 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 359 "perl_destruct: ignoring %p (state %u)\n",
360 t, ThrSTATE(t)));
361 MUTEX_UNLOCK(&t->mutex);
c7848ba1 362 /* fall through and out */
33f46ff6
MB		 363 }
364 }
8023c3ce
MB		 365 /* We leave the above "Pass 1" loop with threads_mutex still locked */
366
367 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 368 while (PL_nthreads > 1)
11343788 369 {
bf49b057 370 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 371 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 372 PL_nthreads - 1));
373 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 374 }
375 /* At this point, we're the last thread */
533c011a 376 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 377 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 378 MUTEX_DESTROY(&PL_threads_mutex);
379 COND_DESTROY(&PL_nthreads_cond);
b57a092c 380 PL_nthreads--;
0f15f207 381#endif /* !defined(FAKE_THREADS) */
11343788
MB		 382#endif /* USE_THREADS */
383
3280af22 384 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 385#ifdef DEBUGGING
386 {
387 char *s;
155aba94 388 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 389 int i = atoi(s);
390 if (destruct_level < i)
391 destruct_level = i;
392 }
4633a7c4
LW		 393 }
394#endif
395
8990e307 396 LEAVE;
a0d0e21e
LW		 397 FREETMPS;
398
ff0cee69 399 /* We must account for everything. */
400
401 /* Destroy the main CV and syntax tree */
3280af22
NIS		 402 if (PL_main_root) {
403 PL_curpad = AvARRAY(PL_comppad);
404 op_free(PL_main_root);
405 PL_main_root = Nullop;
a0d0e21e 406 }
3280af22
NIS		 407 PL_curcop = &PL_compiling;
408 PL_main_start = Nullop;
409 SvREFCNT_dec(PL_main_cv);
410 PL_main_cv = Nullcv;
24d3c518 411 PL_dirty = TRUE;
ff0cee69 412
3280af22 413 if (PL_sv_objcount) {
a0d0e21e
LW		 414 /*
415 * Try to destruct global references. We do this first so that the
416 * destructors and destructees still exist. Some sv's might remain.
417 * Non-referenced objects are on their own.
418 */
a0d0e21e 419 sv_clean_objs();
8990e307
LW		 420 }
421
5cd24f17 422 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 423 SvREFCNT_dec(PL_warnhook);
424 PL_warnhook = Nullsv;
425 SvREFCNT_dec(PL_diehook);
426 PL_diehook = Nullsv;
5cd24f17 427
4b556e6c 428 /* call exit list functions */
3280af22 429 while (PL_exitlistlen-- > 0)
0cb96387 430 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 431
3280af22 432 Safefree(PL_exitlist);
4b556e6c 433
a0d0e21e 434 if (destruct_level == 0){
8990e307 435
a0d0e21e 436 DEBUG_P(debprofdump());
ac27b0f5 437
a0d0e21e
LW		 438 /* The exit() function will do everything that needs doing. */
439 return;
440 }
5dd60ef7 441
551a8b83
JH		 442 /* jettison our possibly duplicated environment */
443
444#ifdef USE_ENVIRON_ARRAY
445 if (environ != PL_origenviron) {
446 I32 i;
447
448 for (i = 0; environ[i]; i++)
4b420006
JH		 449 safesysfree(environ[i]);
450 /* Must use safesysfree() when working with environ. */
451 safesysfree(environ);
551a8b83
JH		 452
453 environ = PL_origenviron;
454 }
455#endif
456
5f05dabc 457 /* loosen bonds of global variables */
458
3280af22
NIS		 459 if(PL_rsfp) {
460 (void)PerlIO_close(PL_rsfp);
461 PL_rsfp = Nullfp;
8ebc5c01 462 }
463
464 /* Filters for program text */
3280af22
NIS		 465 SvREFCNT_dec(PL_rsfp_filters);
466 PL_rsfp_filters = Nullav;
8ebc5c01 467
468 /* switches */
3280af22
NIS		 469 PL_preprocess = FALSE;
470 PL_minus_n = FALSE;
471 PL_minus_p = FALSE;
472 PL_minus_l = FALSE;
473 PL_minus_a = FALSE;
474 PL_minus_F = FALSE;
475 PL_doswitches = FALSE;
599cee73 476 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 477 PL_doextract = FALSE;
478 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 479 PL_unsafe = FALSE;
480
481 Safefree(PL_inplace);
482 PL_inplace = Nullch;
a7cb1f99 483 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 484
485 if (PL_e_script) {
486 SvREFCNT_dec(PL_e_script);
487 PL_e_script = Nullsv;
8ebc5c01 488 }
489
490 /* magical thingies */
491
7889fe52
NIS		 492 SvREFCNT_dec(PL_ofs_sv); /* $, */
493 PL_ofs_sv = Nullsv;
5f05dabc 494
7889fe52
NIS		 495 SvREFCNT_dec(PL_ors_sv); /* $\ */
496 PL_ors_sv = Nullsv;
8ebc5c01 497
3280af22
NIS		 498 SvREFCNT_dec(PL_rs); /* $/ */
499 PL_rs = Nullsv;
dc92893f 500
3280af22
NIS		 501 SvREFCNT_dec(PL_nrs); /* $/ helper */
502 PL_nrs = Nullsv;
5f05dabc 503
d33b2eba
GS		 504 PL_multiline = 0; /* $* */
505 Safefree(PL_osname); /* $^O */
506 PL_osname = Nullch;
5f05dabc 507
3280af22
NIS		 508 SvREFCNT_dec(PL_statname);
509 PL_statname = Nullsv;
510 PL_statgv = Nullgv;
5f05dabc 511
8ebc5c01 512 /* defgv, aka *_ should be taken care of elsewhere */
513
8ebc5c01 514 /* clean up after study() */
3280af22
NIS		 515 SvREFCNT_dec(PL_lastscream);
516 PL_lastscream = Nullsv;
517 Safefree(PL_screamfirst);
518 PL_screamfirst = 0;
519 Safefree(PL_screamnext);
520 PL_screamnext = 0;
8ebc5c01 521
7d5ea4e7
GS		 522 /* float buffer */
523 Safefree(PL_efloatbuf);
524 PL_efloatbuf = Nullch;
525 PL_efloatsize = 0;
526
8ebc5c01 527 /* startup and shutdown function lists */
3280af22
NIS		 528 SvREFCNT_dec(PL_beginav);
529 SvREFCNT_dec(PL_endav);
7d30b5c4 530 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 531 SvREFCNT_dec(PL_initav);
532 PL_beginav = Nullav;
533 PL_endav = Nullav;
7d30b5c4 534 PL_checkav = Nullav;
3280af22 535 PL_initav = Nullav;
5618dfe8 536
8ebc5c01 537 /* shortcuts just get cleared */
3280af22 538 PL_envgv = Nullgv;
3280af22
NIS		 539 PL_incgv = Nullgv;
540 PL_hintgv = Nullgv;
541 PL_errgv = Nullgv;
542 PL_argvgv = Nullgv;
543 PL_argvoutgv = Nullgv;
544 PL_stdingv = Nullgv;
bf49b057 545 PL_stderrgv = Nullgv;
3280af22
NIS		 546 PL_last_in_gv = Nullgv;
547 PL_replgv = Nullgv;
5c831c24 548 PL_debstash = Nullhv;
8ebc5c01 549
550 /* reset so print() ends up where we expect */
551 setdefout(Nullgv);
5c831c24 552
7a1c5554
GS		 553 SvREFCNT_dec(PL_argvout_stack);
554 PL_argvout_stack = Nullav;
8ebc5c01 555
5c831c24
GS		 556 SvREFCNT_dec(PL_modglobal);
557 PL_modglobal = Nullhv;
558 SvREFCNT_dec(PL_preambleav);
559 PL_preambleav = Nullav;
560 SvREFCNT_dec(PL_subname);
561 PL_subname = Nullsv;
562 SvREFCNT_dec(PL_linestr);
563 PL_linestr = Nullsv;
564 SvREFCNT_dec(PL_pidstatus);
565 PL_pidstatus = Nullhv;
566 SvREFCNT_dec(PL_toptarget);
567 PL_toptarget = Nullsv;
568 SvREFCNT_dec(PL_bodytarget);
569 PL_bodytarget = Nullsv;
570 PL_formtarget = Nullsv;
571
d33b2eba 572 /* free locale stuff */
b9582b6a 573#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 574 Safefree(PL_collation_name);
575 PL_collation_name = Nullch;
b9582b6a 576#endif
d33b2eba 577
b9582b6a 578#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 579 Safefree(PL_numeric_name);
580 PL_numeric_name = Nullch;
eff180cd 581 SvREFCNT_dec(PL_numeric_radix);
b9582b6a 582#endif
d33b2eba 583
5c831c24
GS		 584 /* clear utf8 character classes */
585 SvREFCNT_dec(PL_utf8_alnum);
586 SvREFCNT_dec(PL_utf8_alnumc);
587 SvREFCNT_dec(PL_utf8_ascii);
588 SvREFCNT_dec(PL_utf8_alpha);
589 SvREFCNT_dec(PL_utf8_space);
590 SvREFCNT_dec(PL_utf8_cntrl);
591 SvREFCNT_dec(PL_utf8_graph);
592 SvREFCNT_dec(PL_utf8_digit);
593 SvREFCNT_dec(PL_utf8_upper);
594 SvREFCNT_dec(PL_utf8_lower);
595 SvREFCNT_dec(PL_utf8_print);
596 SvREFCNT_dec(PL_utf8_punct);
597 SvREFCNT_dec(PL_utf8_xdigit);
598 SvREFCNT_dec(PL_utf8_mark);
599 SvREFCNT_dec(PL_utf8_toupper);
600 SvREFCNT_dec(PL_utf8_tolower);
601 PL_utf8_alnum = Nullsv;
602 PL_utf8_alnumc = Nullsv;
603 PL_utf8_ascii = Nullsv;
604 PL_utf8_alpha = Nullsv;
605 PL_utf8_space = Nullsv;
606 PL_utf8_cntrl = Nullsv;
607 PL_utf8_graph = Nullsv;
608 PL_utf8_digit = Nullsv;
609 PL_utf8_upper = Nullsv;
610 PL_utf8_lower = Nullsv;
611 PL_utf8_print = Nullsv;
612 PL_utf8_punct = Nullsv;
613 PL_utf8_xdigit = Nullsv;
614 PL_utf8_mark = Nullsv;
615 PL_utf8_toupper = Nullsv;
616 PL_utf8_totitle = Nullsv;
617 PL_utf8_tolower = Nullsv;
618
971a9dd3
GS		 619 if (!specialWARN(PL_compiling.cop_warnings))
620 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 621 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 622 if (!specialCopIO(PL_compiling.cop_io))
623 SvREFCNT_dec(PL_compiling.cop_io);
624 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 625#ifdef USE_ITHREADS
626 Safefree(CopFILE(&PL_compiling));
627 CopFILE(&PL_compiling) = Nullch;
628 Safefree(CopSTASHPV(&PL_compiling));
629#else
01724ea0 630 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 631 CopFILEGV(&PL_compiling) = Nullgv;
632 /* cop_stash is not refcounted */
01724ea0 633#endif
5c831c24 634
a0d0e21e 635 /* Prepare to destruct main symbol table. */
5f05dabc 636
3280af22
NIS		 637 hv = PL_defstash;
638 PL_defstash = 0;
a0d0e21e 639 SvREFCNT_dec(hv);
5c831c24
GS		 640 SvREFCNT_dec(PL_curstname);
641 PL_curstname = Nullsv;
a0d0e21e 642
5a844595
GS		 643 /* clear queued errors */
644 SvREFCNT_dec(PL_errors);
645 PL_errors = Nullsv;
646
a0d0e21e 647 FREETMPS;
0453d815 648 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 649 if (PL_scopestack_ix != 0)
0453d815
PM		 650 Perl_warner(aTHX_ WARN_INTERNAL,
651 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 652 (long)PL_scopestack_ix);
653 if (PL_savestack_ix != 0)
0453d815
PM		 654 Perl_warner(aTHX_ WARN_INTERNAL,
655 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 656 (long)PL_savestack_ix);
657 if (PL_tmps_floor != -1)
0453d815 658 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 659 (long)PL_tmps_floor + 1);
a0d0e21e 660 if (cxstack_ix != -1)
0453d815 661 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 662 (long)cxstack_ix + 1);
a0d0e21e 663 }
8990e307
LW		 664
665 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 666 last_sv_count = 0;
d33b2eba 667 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS		 668 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
669 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
670 last_sv_count = PL_sv_count;
8990e307
LW		 671 sv_clean_all();
672 }
d33b2eba
GS		 673 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
674 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 675 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
676 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 677
d4777f27
GS		 678 AvREAL_off(PL_fdpid); /* no surviving entries */
679 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 680 PL_fdpid = Nullav;
681
6c644e78
GS		 682#ifdef HAVE_INTERP_INTERN
683 sys_intern_clear();
684#endif
685
6e72f9df 686 /* Destruct the global string table. */
687 {
688 /* Yell and reset the HeVAL() slots that are still holding refcounts,
689 * so that sv_free() won't fail on them.
690 */
691 I32 riter;
692 I32 max;
693 HE *hent;
694 HE **array;
695
696 riter = 0;
3280af22
NIS		 697 max = HvMAX(PL_strtab);
698 array = HvARRAY(PL_strtab);
6e72f9df 699 hent = array[0];
700 for (;;) {
0453d815
PM		 701 if (hent && ckWARN_d(WARN_INTERNAL)) {
702 Perl_warner(aTHX_ WARN_INTERNAL,
703 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 704 HeVAL(hent) - Nullsv, HeKEY(hent));
705 HeVAL(hent) = Nullsv;
706 hent = HeNEXT(hent);
707 }
708 if (!hent) {
709 if (++riter > max)
710 break;
711 hent = array[riter];
712 }
713 }
714 }
3280af22 715 SvREFCNT_dec(PL_strtab);
6e72f9df 716
e652bb2f 717#ifdef USE_ITHREADS
a0739874
DM		 718 /* free the pointer table used for cloning */
719 ptr_table_free(PL_ptr_table);
53186e96 720#endif
a0739874 721
d33b2eba
GS		 722 /* free special SVs */
723
724 SvREFCNT(&PL_sv_yes) = 0;
725 sv_clear(&PL_sv_yes);
726 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 727 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 728
729 SvREFCNT(&PL_sv_no) = 0;
730 sv_clear(&PL_sv_no);
731 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 732 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 733
734 SvREFCNT(&PL_sv_undef) = 0;
735 SvREADONLY_off(&PL_sv_undef);
d33b2eba 736
0453d815
PM		 737 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
738 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 739
3280af22 740 Safefree(PL_origfilename);
3280af22 741 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 742 if (PL_reg_curpm)
743 Safefree(PL_reg_curpm);
82ba1be6 744 Safefree(PL_reg_poscache);
3280af22
NIS		 745 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
746 Safefree(PL_op_mask);
cf36064f
GS		 747 Safefree(PL_psig_ptr);
748 Safefree(PL_psig_name);
2c2666fc 749 Safefree(PL_bitcount);
ce08f86c 750 Safefree(PL_psig_pend);
6e72f9df 751 nuke_stacks();
3280af22 752 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 753
a0d0e21e 754 DEBUG_P(debprofdump());
11343788 755#ifdef USE_THREADS
5f08fbcd 756 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 757 MUTEX_DESTROY(&PL_sv_mutex);
758 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 759 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 760 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 761 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 762#ifdef EMULATE_ATOMIC_REFCOUNTS
763 MUTEX_DESTROY(&PL_svref_mutex);
764#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 765
8023c3ce 766 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 767 Safefree(SvPVX(PL_thrsv));
768 Safefree(SvANY(PL_thrsv));
769 Safefree(PL_thrsv);
770 PL_thrsv = Nullsv;
8023c3ce 771#endif /* USE_THREADS */
d33b2eba 772
612f20c3
GS		 773 sv_free_arenas();
774
fc36a67e 775 /* As the absolutely last thing, free the non-arena SV for mess() */
776
3280af22 777 if (PL_mess_sv) {
9c63abab
GS		 778 /* it could have accumulated taint magic */
779 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
780 MAGIC* mg;
781 MAGIC* moremagic;
782 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
783 moremagic = mg->mg_moremagic;
784 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
785 Safefree(mg->mg_ptr);
786 Safefree(mg);
787 }
788 }
fc36a67e 789 /* we know that type >= SVt_PV */
155aba94 790 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 791 Safefree(SvPVX(PL_mess_sv));
792 Safefree(SvANY(PL_mess_sv));
793 Safefree(PL_mess_sv);
794 PL_mess_sv = Nullsv;
fc36a67e 795 }
79072805
LW		 796}
797
954c1994
GS		 798/*
799=for apidoc perl_free
800
801Releases a Perl interpreter. See L<perlembed>.
802
803=cut
804*/
805
79072805 806void
0cb96387 807perl_free(pTHXx)
79072805 808{
c5be433b 809#if defined(PERL_OBJECT)
7f0d82f7 810 PerlMem_free(this);
76e3520e 811#else
ce3e5b80
NIS		 812# if defined(WIN32)
813# if defined(PERL_IMPLICIT_SYS)
1c0ca838 814 void *host = w32_internal_host;
ba247512 815 if (PerlProc_lasthost()) {
ce08f86c 816 PerlIO_cleanup();
ba247512 817 }
7f0d82f7 818 PerlMem_free(aTHXx);
1c0ca838 819 win32_delete_internal_host(host);
ce3e5b80 820#else
ce08f86c 821 PerlIO_cleanup();
ce3e5b80
NIS		 822 PerlMem_free(aTHXx);
823#endif
1c0ca838
GS		 824# else
825 PerlMem_free(aTHXx);
826# endif
76e3520e 827#endif
79072805
LW		 828}
829
4b556e6c 830void
864dbfa3 831Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 832{
3280af22
NIS		 833 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
834 PL_exitlist[PL_exitlistlen].fn = fn;
835 PL_exitlist[PL_exitlistlen].ptr = ptr;
836 ++PL_exitlistlen;
4b556e6c
JD		 837}
838
954c1994
GS		 839/*
840=for apidoc perl_parse
841
842Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
843
844=cut
845*/
846
79072805 847int
0cb96387 848perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 849{
6224f72b 850 I32 oldscope;
6224f72b 851 int ret;
db36c5a1 852 dJMPENV;
cea2e8a9
GS		 853#ifdef USE_THREADS
854 dTHX;
855#endif
8d063cd8 856
a687059c
LW		 857#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
858#ifdef IAMSUID
859#undef IAMSUID
cea2e8a9 860 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 861setuid perl scripts securely.\n");
862#endif
863#endif
864
8f1f23e8 865#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 866 _dyld_lookup_and_bind
867 ("__environ", (unsigned long *) &environ_pointer, NULL);
868#endif /* environ */
869
3280af22
NIS		 870 PL_origargv = argv;
871 PL_origargc = argc;
fa6a1c44 872#ifdef USE_ENVIRON_ARRAY
3280af22 873 PL_origenviron = environ;
a0d0e21e
LW		 874#endif
875
3280af22 876 if (PL_do_undump) {
a0d0e21e
LW		 877
878 /* Come here if running an undumped a.out. */
879
3280af22
NIS		 880 PL_origfilename = savepv(argv[0]);
881 PL_do_undump = FALSE;
a0d0e21e 882 cxstack_ix = -1; /* start label stack again */
748a9306 883 init_ids();
a0d0e21e
LW		 884 init_postdump_symbols(argc,argv,env);
885 return 0;
886 }
887
3280af22
NIS		 888 if (PL_main_root) {
889 PL_curpad = AvARRAY(PL_comppad);
890 op_free(PL_main_root);
891 PL_main_root = Nullop;
ff0cee69 892 }
3280af22
NIS		 893 PL_main_start = Nullop;
894 SvREFCNT_dec(PL_main_cv);
895 PL_main_cv = Nullcv;
79072805 896
3280af22
NIS		 897 time(&PL_basetime);
898 oldscope = PL_scopestack_ix;
599cee73 899 PL_dowarn = G_WARN_OFF;
f86702cc 900
14dd3ad8
GS		 901#ifdef PERL_FLEXIBLE_EXCEPTIONS
902 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
903#else
904 JMPENV_PUSH(ret);
905#endif
6224f72b 906 switch (ret) {
312caa8e 907 case 0:
14dd3ad8
GS		 908#ifndef PERL_FLEXIBLE_EXCEPTIONS
909 parse_body(env,xsinit);
910#endif
7d30b5c4
GS		 911 if (PL_checkav)
912 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 913 ret = 0;
914 break;
6224f72b
GS		 915 case 1:
916 STATUS_ALL_FAILURE;
917 /* FALL THROUGH */
918 case 2:
919 /* my_exit() was called */
3280af22 920 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 921 LEAVE;
922 FREETMPS;
3280af22 923 PL_curstash = PL_defstash;
7d30b5c4
GS		 924 if (PL_checkav)
925 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 926 ret = STATUS_NATIVE_EXPORT;
927 break;
6224f72b 928 case 3:
bf49b057 929 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 930 ret = 1;
931 break;
6224f72b 932 }
14dd3ad8
GS		 933 JMPENV_POP;
934 return ret;
935}
936
937#ifdef PERL_FLEXIBLE_EXCEPTIONS
938STATIC void *
939S_vparse_body(pTHX_ va_list args)
940{
941 char **env = va_arg(args, char**);
942 XSINIT_t xsinit = va_arg(args, XSINIT_t);
943
944 return parse_body(env, xsinit);
312caa8e 945}
14dd3ad8 946#endif
312caa8e
CS		 947
948STATIC void *
14dd3ad8 949S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 950{
312caa8e
CS		 951 int argc = PL_origargc;
952 char **argv = PL_origargv;
312caa8e
CS		 953 char *scriptname = NULL;
954 int fdscript = -1;
955 VOL bool dosearch = FALSE;
956 char *validarg = "";
957 AV* comppadlist;
958 register SV *sv;
959 register char *s;
f4c556ac 960 char *cddir = Nullch;
312caa8e 961
3280af22 962 sv_setpvn(PL_linestr,"",0);
79cb57f6 963 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 964 SAVEFREESV(sv);
965 init_main_stash();
54310121 966
6224f72b
GS		 967 for (argc--,argv++; argc > 0; argc--,argv++) {
968 if (argv[0][0] != '-' || !argv[0][1])
969 break;
970#ifdef DOSUID
971 if (*validarg)
972 validarg = " PHOOEY ";
973 else
974 validarg = argv[0];
13281fa4 975#endif
6224f72b
GS		 976 s = argv[0]+1;
977 reswitch:
978 switch (*s) {
729a02f2
GS		 979 case 'C':
980#ifdef WIN32
c0932edc 981 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 982 /* FALL THROUGH */
983#endif
1d5472a9
GS		 984#ifndef PERL_STRICT_CR
985 case '\r':
986#endif
6224f72b
GS		 987 case ' ':
988 case '0':
989 case 'F':
990 case 'a':
991 case 'c':
992 case 'd':
993 case 'D':
994 case 'h':
995 case 'i':
996 case 'l':
997 case 'M':
998 case 'm':
999 case 'n':
1000 case 'p':
1001 case 's':
1002 case 'u':
1003 case 'U':
1004 case 'v':
599cee73
PM		 1005 case 'W':
1006 case 'X':
6224f72b 1007 case 'w':
155aba94 1008 if ((s = moreswitches(s)))
6224f72b
GS		 1009 goto reswitch;
1010 break;
33b78306 1011
6224f72b 1012 case 'T':
3280af22 1013 PL_tainting = TRUE;
6224f72b
GS		 1014 s++;
1015 goto reswitch;
f86702cc 1016
6224f72b 1017 case 'e':
bf4acbe4
GS		 1018#ifdef MACOS_TRADITIONAL
1019 /* ignore -e for Dev:Pseudo argument */
1020 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1021 break;
bf4acbe4 1022#endif
3280af22 1023 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1024 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1025 if (!PL_e_script) {
79cb57f6 1026 PL_e_script = newSVpvn("",0);
0cb96387 1027 filter_add(read_e_script, NULL);
6224f72b
GS		 1028 }
1029 if (*++s)
3280af22 1030 sv_catpv(PL_e_script, s);
6224f72b 1031 else if (argv[1]) {
3280af22 1032 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1033 argc--,argv++;
1034 }
1035 else
cea2e8a9 1036 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1037 sv_catpv(PL_e_script, "\n");
6224f72b 1038 break;
afe37c7d 1039
6224f72b
GS		 1040 case 'I': /* -I handled both here and in moreswitches() */
1041 forbid_setid("-I");
1042 if (!*++s && (s=argv[1]) != Nullch) {
1043 argc--,argv++;
1044 }
6224f72b 1045 if (s && *s) {
0df16ed7
GS		 1046 char *p;
1047 STRLEN len = strlen(s);
1048 p = savepvn(s, len);
9c8a64f0 1049 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1050 sv_catpvn(sv, "-I", 2);
1051 sv_catpvn(sv, p, len);
1052 sv_catpvn(sv, " ", 1);
6224f72b 1053 Safefree(p);
0df16ed7
GS		 1054 }
1055 else
a67e862a 1056 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1057 break;
1058 case 'P':
1059 forbid_setid("-P");
3280af22 1060 PL_preprocess = TRUE;
6224f72b
GS		 1061 s++;
1062 goto reswitch;
1063 case 'S':
1064 forbid_setid("-S");
1065 dosearch = TRUE;
1066 s++;
1067 goto reswitch;
1068 case 'V':
3280af22
NIS		 1069 if (!PL_preambleav)
1070 PL_preambleav = newAV();
1071 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1072 if (*++s != ':') {
3280af22 1073 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1074#ifdef VMS
6b88bc9c 1075 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1076#else
3280af22 1077 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1078#endif
3280af22 1079 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1080# ifdef DEBUGGING
3280af22 1081 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1082# endif
6224f72b 1083# ifdef MULTIPLICITY
8f872242 1084 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1085# endif
b363f7ed
GS		 1086# ifdef USE_THREADS
1087 sv_catpv(PL_Sv," USE_THREADS");
1088# endif
ac5e8965
JH		 1089# ifdef USE_ITHREADS
1090 sv_catpv(PL_Sv," USE_ITHREADS");
1091# endif
10cc9d2a
JH		 1092# ifdef USE_64_BIT_INT
1093 sv_catpv(PL_Sv," USE_64_BIT_INT");
1094# endif
1095# ifdef USE_64_BIT_ALL
1096 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1097# endif
1098# ifdef USE_LONG_DOUBLE
1099 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1100# endif
53430762
JH		 1101# ifdef USE_LARGE_FILES
1102 sv_catpv(PL_Sv," USE_LARGE_FILES");
1103# endif
ac5e8965
JH		 1104# ifdef USE_SOCKS
1105 sv_catpv(PL_Sv," USE_SOCKS");
1106# endif
b363f7ed
GS		 1107# ifdef PERL_OBJECT
1108 sv_catpv(PL_Sv," PERL_OBJECT");
1109# endif
1110# ifdef PERL_IMPLICIT_CONTEXT
1111 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1112# endif
1113# ifdef PERL_IMPLICIT_SYS
1114 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1115# endif
3280af22 1116 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1117
6224f72b
GS		 1118#if defined(LOCAL_PATCH_COUNT)
1119 if (LOCAL_PATCH_COUNT > 0) {
1120 int i;
3280af22 1121 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1122 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1123 if (PL_localpatches[i])
cea2e8a9 1124 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1125 }
1126 }
1127#endif
cea2e8a9 1128 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1129#ifdef __DATE__
1130# ifdef __TIME__
cea2e8a9 1131 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1132# else
cea2e8a9 1133 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1134# endif
1135#endif
3280af22 1136 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1137$\"=\"\\n \"; \
1138@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1139print \" \\%ENV:\\n @env\\n\" if @env; \
1140print \" \\@INC:\\n @INC\\n\";");
1141 }
1142 else {
3280af22
NIS		 1143 PL_Sv = newSVpv("config_vars(qw(",0);
1144 sv_catpv(PL_Sv, ++s);
1145 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1146 s += strlen(s);
1147 }
3280af22 1148 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1149 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1150 goto reswitch;
1151 case 'x':
3280af22 1152 PL_doextract = TRUE;
6224f72b
GS		 1153 s++;
1154 if (*s)
f4c556ac 1155 cddir = s;
6224f72b
GS		 1156 break;
1157 case 0:
1158 break;
1159 case '-':
1160 if (!*++s || isSPACE(*s)) {
1161 argc--,argv++;
1162 goto switch_end;
1163 }
1164 /* catch use of gnu style long options */
1165 if (strEQ(s, "version")) {
1166 s = "v";
1167 goto reswitch;
1168 }
1169 if (strEQ(s, "help")) {
1170 s = "h";
1171 goto reswitch;
1172 }
1173 s--;
1174 /* FALL THROUGH */
1175 default:
cea2e8a9 1176 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1177 }
1178 }
6224f72b 1179 switch_end:
54310121 1180
f675dbe5
CB		 1181 if (
1182#ifndef SECURE_INTERNAL_GETENV
1183 !PL_tainting &&
1184#endif
0df16ed7
GS		 1185 (s = PerlEnv_getenv("PERL5OPT")))
1186 {
74288ac8
GS		 1187 while (isSPACE(*s))
1188 s++;
1189 if (*s == '-' && *(s+1) == 'T')
1190 PL_tainting = TRUE;
1191 else {
1192 while (s && *s) {
4ea8f8fb 1193 char *d;
74288ac8
GS		 1194 while (isSPACE(*s))
1195 s++;
1196 if (*s == '-') {
1197 s++;
1198 if (isSPACE(*s))
1199 continue;
1200 }
4ea8f8fb 1201 d = s;
74288ac8
GS		 1202 if (!*s)
1203 break;
1204 if (!strchr("DIMUdmw", *s))
cea2e8a9 1205 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1206 while (++s && *s) {
1207 if (isSPACE(*s)) {
1208 *s++ = '\0';
1209 break;
1210 }
1211 }
1212 moreswitches(d);
6224f72b 1213 }
6224f72b
GS		 1214 }
1215 }
a0d0e21e 1216
6224f72b
GS		 1217 if (!scriptname)
1218 scriptname = argv[0];
3280af22 1219 if (PL_e_script) {
6224f72b
GS		 1220 argc++,argv--;
1221 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1222 }
1223 else if (scriptname == Nullch) {
1224#ifdef MSDOS
1225 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1226 moreswitches("h");
1227#endif
1228 scriptname = "-";
1229 }
1230
1231 init_perllib();
1232
1233 open_script(scriptname,dosearch,sv,&fdscript);
1234
1235 validate_suid(validarg, scriptname,fdscript);
1236
64ca3a65 1237#ifndef PERL_MICRO
0b5b802d
GS		 1238#if defined(SIGCHLD) || defined(SIGCLD)
1239 {
1240#ifndef SIGCHLD
1241# define SIGCHLD SIGCLD
1242#endif
1243 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1244 if (sigstate == SIG_IGN) {
1245 if (ckWARN(WARN_SIGNAL))
1246 Perl_warner(aTHX_ WARN_SIGNAL,
1247 "Can't ignore signal CHLD, forcing to default");
1248 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1249 }
1250 }
1251#endif
64ca3a65 1252#endif
0b5b802d 1253
bf4acbe4
GS		 1254#ifdef MACOS_TRADITIONAL
1255 if (PL_doextract || gMacPerl_AlwaysExtract) {
1256#else
f4c556ac 1257 if (PL_doextract) {
bf4acbe4 1258#endif
6224f72b 1259 find_beginning();
f4c556ac
GS		 1260 if (cddir && PerlDir_chdir(cddir) < 0)
1261 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1262
1263 }
6224f72b 1264
3280af22
NIS		 1265 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1266 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1267 CvUNIQUE_on(PL_compcv);
1268
1269 PL_comppad = newAV();
1270 av_push(PL_comppad, Nullsv);
1271 PL_curpad = AvARRAY(PL_comppad);
1272 PL_comppad_name = newAV();
1273 PL_comppad_name_fill = 0;
1274 PL_min_intro_pending = 0;
1275 PL_padix = 0;
6224f72b 1276#ifdef USE_THREADS
79cb57f6 1277 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1278 PL_curpad[0] = (SV*)newAV();
1279 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1280 CvOWNER(PL_compcv) = 0;
1281 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1282 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1283#endif /* USE_THREADS */
1284
1285 comppadlist = newAV();
1286 AvREAL_off(comppadlist);
3280af22
NIS		 1287 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1288 av_store(comppadlist, 1, (SV*)PL_comppad);
1289 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1290
1291 boot_core_UNIVERSAL();
9a34ef1d 1292#ifndef PERL_MICRO
09bef843 1293 boot_core_xsutils();
9a34ef1d 1294#endif
6224f72b
GS		 1295
1296 if (xsinit)
0cb96387 1297 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1298#ifndef PERL_MICRO
ed79a026 1299#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1300 init_os_extras();
6224f72b 1301#endif
64ca3a65 1302#endif
6224f72b 1303
29209bc5 1304#ifdef USE_SOCKS
1b9c9cf5
DH		 1305# ifdef HAS_SOCKS5_INIT
1306 socks5_init(argv[0]);
1307# else
29209bc5 1308 SOCKSinit(argv[0]);
1b9c9cf5 1309# endif
ac27b0f5 1310#endif
29209bc5 1311
6224f72b
GS		 1312 init_predump_symbols();
1313 /* init_postdump_symbols not currently designed to be called */
1314 /* more than once (ENV isn't cleared first, for example) */
1315 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1316 if (!PL_do_undump)
6224f72b
GS		 1317 init_postdump_symbols(argc,argv,env);
1318
1319 init_lexer();
1320
1321 /* now parse the script */
1322
1323 SETERRNO(0,SS$_NORMAL);
3280af22 1324 PL_error_count = 0;
bf4acbe4
GS		 1325#ifdef MACOS_TRADITIONAL
1326 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1327 if (PL_minus_c)
1328 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1329 else {
1330 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1331 MacPerl_MPWFileName(PL_origfilename));
1332 }
1333 }
1334#else
3280af22
NIS		 1335 if (yyparse() || PL_error_count) {
1336 if (PL_minus_c)
cea2e8a9 1337 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1338 else {
cea2e8a9 1339 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1340 PL_origfilename);
6224f72b
GS		 1341 }
1342 }
bf4acbe4 1343#endif
57843af0 1344 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1345 PL_curstash = PL_defstash;
1346 PL_preprocess = FALSE;
1347 if (PL_e_script) {
1348 SvREFCNT_dec(PL_e_script);
1349 PL_e_script = Nullsv;
6224f72b
GS		 1350 }
1351
1352 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1353 SvREFCNT_dec(PL_rs);
1354 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1355 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1356 if (PL_do_undump)
6224f72b
GS		 1357 my_unexec();
1358
57843af0
GS		 1359 if (isWARN_ONCE) {
1360 SAVECOPFILE(PL_curcop);
1361 SAVECOPLINE(PL_curcop);
3280af22 1362 gv_check(PL_defstash);
57843af0 1363 }
6224f72b
GS		 1364
1365 LEAVE;
1366 FREETMPS;
1367
1368#ifdef MYMALLOC
1369 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1370 dump_mstats("after compilation:");
1371#endif
1372
1373 ENTER;
3280af22 1374 PL_restartop = 0;
312caa8e 1375 return NULL;
6224f72b
GS		 1376}
1377
954c1994
GS		 1378/*
1379=for apidoc perl_run
1380
1381Tells a Perl interpreter to run. See L<perlembed>.
1382
1383=cut
1384*/
1385
6224f72b 1386int
0cb96387 1387perl_run(pTHXx)
6224f72b 1388{
6224f72b 1389 I32 oldscope;
14dd3ad8 1390 int ret = 0;
db36c5a1 1391 dJMPENV;
cea2e8a9
GS		 1392#ifdef USE_THREADS
1393 dTHX;
1394#endif
6224f72b 1395
3280af22 1396 oldscope = PL_scopestack_ix;
6224f72b 1397
14dd3ad8 1398#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1399 redo_body:
14dd3ad8
GS		 1400 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1401#else
1402 JMPENV_PUSH(ret);
1403#endif
6224f72b
GS		 1404 switch (ret) {
1405 case 1:
1406 cxstack_ix = -1; /* start context stack again */
312caa8e 1407 goto redo_body;
14dd3ad8
GS		 1408 case 0: /* normal completion */
1409#ifndef PERL_FLEXIBLE_EXCEPTIONS
1410 redo_body:
1411 run_body(oldscope);
1412#endif
1413 /* FALL THROUGH */
1414 case 2: /* my_exit() */
3280af22 1415 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1416 LEAVE;
1417 FREETMPS;
3280af22 1418 PL_curstash = PL_defstash;
865be832 1419 if (PL_endav && !PL_minus_c)
3280af22 1420 call_list(oldscope, PL_endav);
6224f72b
GS		 1421#ifdef MYMALLOC
1422 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1423 dump_mstats("after execution: ");
1424#endif
14dd3ad8
GS		 1425 ret = STATUS_NATIVE_EXPORT;
1426 break;
6224f72b 1427 case 3:
312caa8e
CS		 1428 if (PL_restartop) {
1429 POPSTACK_TO(PL_mainstack);
1430 goto redo_body;
6224f72b 1431 }
bf49b057 1432 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1433 FREETMPS;
14dd3ad8
GS		 1434 ret = 1;
1435 break;
6224f72b
GS		 1436 }
1437
14dd3ad8
GS		 1438 JMPENV_POP;
1439 return ret;
312caa8e
CS		 1440}
1441
14dd3ad8 1442#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1443STATIC void *
14dd3ad8 1444S_vrun_body(pTHX_ va_list args)
312caa8e 1445{
312caa8e
CS		 1446 I32 oldscope = va_arg(args, I32);
1447
14dd3ad8
GS		 1448 return run_body(oldscope);
1449}
1450#endif
1451
1452
1453STATIC void *
1454S_run_body(pTHX_ I32 oldscope)
1455{
6224f72b 1456 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1457 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1458
3280af22 1459 if (!PL_restartop) {
6224f72b
GS		 1460 DEBUG_x(dump_all());
1461 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1462 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1463 PTR2UV(thr)));
6224f72b 1464
3280af22 1465 if (PL_minus_c) {
bf4acbe4
GS		 1466#ifdef MACOS_TRADITIONAL
1467 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1468#else
bf49b057 1469 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1470#endif
6224f72b
GS		 1471 my_exit(0);
1472 }
3280af22 1473 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1474 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1475 if (PL_initav)
1476 call_list(oldscope, PL_initav);
6224f72b
GS		 1477 }
1478
1479 /* do it */
1480
3280af22 1481 if (PL_restartop) {
533c011a 1482 PL_op = PL_restartop;
3280af22 1483 PL_restartop = 0;
cea2e8a9 1484 CALLRUNOPS(aTHX);
6224f72b 1485 }
3280af22
NIS		 1486 else if (PL_main_start) {
1487 CvDEPTH(PL_main_cv) = 1;
533c011a 1488 PL_op = PL_main_start;
cea2e8a9 1489 CALLRUNOPS(aTHX);
6224f72b
GS		 1490 }
1491
f6b3007c
JH		 1492 my_exit(0);
1493 /* NOTREACHED */
312caa8e 1494 return NULL;
6224f72b
GS		 1495}
1496
954c1994
GS		 1497/*
1498=for apidoc p||get_sv
1499
1500Returns the SV of the specified Perl scalar. If C<create> is set and the
1501Perl variable does not exist then it will be created. If C<create> is not
1502set and the variable does not exist then NULL is returned.
1503
1504=cut
1505*/
1506
6224f72b 1507SV*
864dbfa3 1508Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1509{
1510 GV *gv;
1511#ifdef USE_THREADS
1512 if (name[1] == '\0' && !isALPHA(name[0])) {
1513 PADOFFSET tmp = find_threadsv(name);
411caa50 1514 if (tmp != NOT_IN_PAD)
6224f72b 1515 return THREADSV(tmp);
6224f72b
GS		 1516 }
1517#endif /* USE_THREADS */
1518 gv = gv_fetchpv(name, create, SVt_PV);
1519 if (gv)
1520 return GvSV(gv);
1521 return Nullsv;
1522}
1523
954c1994
GS		 1524/*
1525=for apidoc p||get_av
1526
1527Returns the AV of the specified Perl array. If C<create> is set and the
1528Perl variable does not exist then it will be created. If C<create> is not
1529set and the variable does not exist then NULL is returned.
1530
1531=cut
1532*/
1533
6224f72b 1534AV*
864dbfa3 1535Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1536{
1537 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1538 if (create)
1539 return GvAVn(gv);
1540 if (gv)
1541 return GvAV(gv);
1542 return Nullav;
1543}
1544
954c1994
GS		 1545/*
1546=for apidoc p||get_hv
1547
1548Returns the HV of the specified Perl hash. If C<create> is set and the
1549Perl variable does not exist then it will be created. If C<create> is not
1550set and the variable does not exist then NULL is returned.
1551
1552=cut
1553*/
1554
6224f72b 1555HV*
864dbfa3 1556Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1557{
a0d0e21e
LW		 1558 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1559 if (create)
1560 return GvHVn(gv);
1561 if (gv)
1562 return GvHV(gv);
1563 return Nullhv;
1564}
1565
954c1994
GS		 1566/*
1567=for apidoc p||get_cv
1568
1569Returns the CV of the specified Perl subroutine. If C<create> is set and
1570the Perl subroutine does not exist then it will be declared (which has the
1571same effect as saying C<sub name;>). If C<create> is not set and the
1572subroutine does not exist then NULL is returned.
1573
1574=cut
1575*/
1576
a0d0e21e 1577CV*
864dbfa3 1578Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1579{
1580 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1581 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1582 /* XXX this is probably not what they think they're getting.
1583 * It has the same effect as "sub name;", i.e. just a forward
1584 * declaration! */
8ebc5c01 1585 if (create && !GvCVu(gv))
774d564b 1586 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1587 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1588 Nullop,
a0d0e21e
LW		 1589 Nullop);
1590 if (gv)
8ebc5c01 1591 return GvCVu(gv);
a0d0e21e
LW		 1592 return Nullcv;
1593}
1594
79072805
LW		 1595/* Be sure to refetch the stack pointer after calling these routines. */
1596
954c1994
GS		 1597/*
1598=for apidoc p||call_argv
1599
1600Performs a callback to the specified Perl sub. See L<perlcall>.
1601
1602=cut
1603*/
1604
a0d0e21e 1605I32
864dbfa3 1606Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1607
8ac85365
NIS		 1608 /* See G_* flags in cop.h */
1609 /* null terminated arg list */
8990e307 1610{
a0d0e21e 1611 dSP;
8990e307 1612
924508f0 1613 PUSHMARK(SP);
a0d0e21e 1614 if (argv) {
8990e307 1615 while (*argv) {
a0d0e21e 1616 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1617 argv++;
1618 }
a0d0e21e 1619 PUTBACK;
8990e307 1620 }
864dbfa3 1621 return call_pv(sub_name, flags);
8990e307
LW		 1622}
1623
954c1994
GS		 1624/*
1625=for apidoc p||call_pv
1626
1627Performs a callback to the specified Perl sub. See L<perlcall>.
1628
1629=cut
1630*/
1631
a0d0e21e 1632I32
864dbfa3 1633Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1634 /* name of the subroutine */
1635 /* See G_* flags in cop.h */
a0d0e21e 1636{
864dbfa3 1637 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1638}
1639
954c1994
GS		 1640/*
1641=for apidoc p||call_method
1642
1643Performs a callback to the specified Perl method. The blessed object must
1644be on the stack. See L<perlcall>.
1645
1646=cut
1647*/
1648
a0d0e21e 1649I32
864dbfa3 1650Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1651 /* name of the subroutine */
1652 /* See G_* flags in cop.h */
a0d0e21e 1653{
968b3946 1654 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1655}
1656
1657/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1658/*
1659=for apidoc p||call_sv
1660
1661Performs a callback to the Perl sub whose name is in the SV. See
1662L<perlcall>.
1663
1664=cut
1665*/
1666
a0d0e21e 1667I32
864dbfa3 1668Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1669 /* See G_* flags in cop.h */
a0d0e21e 1670{
924508f0 1671 dSP;
a0d0e21e 1672 LOGOP myop; /* fake syntax tree node */
968b3946 1673 UNOP method_op;
aa689395 1674 I32 oldmark;
a0d0e21e 1675 I32 retval;
a0d0e21e 1676 I32 oldscope;
54310121 1677 bool oldcatch = CATCH_GET;
6224f72b 1678 int ret;
533c011a 1679 OP* oldop = PL_op;
db36c5a1 1680 dJMPENV;
1e422769 1681
a0d0e21e
LW		 1682 if (flags & G_DISCARD) {
1683 ENTER;
1684 SAVETMPS;
1685 }
1686
aa689395 1687 Zero(&myop, 1, LOGOP);
54310121 1688 myop.op_next = Nullop;
f51d4af5 1689 if (!(flags & G_NOARGS))
aa689395 1690 myop.op_flags |= OPf_STACKED;
54310121 1691 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1692 (flags & G_ARRAY) ? OPf_WANT_LIST :
1693 OPf_WANT_SCALAR);
462e5cf6 1694 SAVEOP();
533c011a 1695 PL_op = (OP*)&myop;
aa689395 1696
3280af22
NIS		 1697 EXTEND(PL_stack_sp, 1);
1698 *++PL_stack_sp = sv;
aa689395 1699 oldmark = TOPMARK;
3280af22 1700 oldscope = PL_scopestack_ix;
a0d0e21e 1701
3280af22 1702 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1703 /* Handle first BEGIN of -d. */
3280af22 1704 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1705 /* Try harder, since this may have been a sighandler, thus
1706 * curstash may be meaningless. */
3280af22 1707 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1708 && !(flags & G_NODEBUG))
533c011a 1709 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1710
968b3946
GS		 1711 if (flags & G_METHOD) {
1712 Zero(&method_op, 1, UNOP);
1713 method_op.op_next = PL_op;
1714 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1715 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1716 PL_op = (OP*)&method_op;
968b3946
GS		 1717 }
1718
312caa8e 1719 if (!(flags & G_EVAL)) {
0cdb2077 1720 CATCH_SET(TRUE);
14dd3ad8 1721 call_body((OP*)&myop, FALSE);
312caa8e 1722 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1723 CATCH_SET(oldcatch);
312caa8e
CS		 1724 }
1725 else {
d78bda3d 1726 myop.op_other = (OP*)&myop;
3280af22 1727 PL_markstack_ptr--;
4633a7c4
LW		 1728 /* we're trying to emulate pp_entertry() here */
1729 {
c09156bb 1730 register PERL_CONTEXT *cx;
54310121 1731 I32 gimme = GIMME_V;
ac27b0f5 1732
4633a7c4
LW		 1733 ENTER;
1734 SAVETMPS;
ac27b0f5 1735
968b3946 1736 push_return(Nullop);
1d76a5c3 1737 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1738 PUSHEVAL(cx, 0, 0);
533c011a 1739 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1740
faef0170 1741 PL_in_eval = EVAL_INEVAL;
4633a7c4 1742 if (flags & G_KEEPERR)
faef0170 1743 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1744 else
38a03e6e 1745 sv_setpv(ERRSV,"");
4633a7c4 1746 }
3280af22 1747 PL_markstack_ptr++;
a0d0e21e 1748
14dd3ad8
GS		 1749#ifdef PERL_FLEXIBLE_EXCEPTIONS
1750 redo_body:
1751 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1752 (OP*)&myop, FALSE);
14dd3ad8
GS		 1753#else
1754 JMPENV_PUSH(ret);
1755#endif
6224f72b
GS		 1756 switch (ret) {
1757 case 0:
14dd3ad8
GS		 1758#ifndef PERL_FLEXIBLE_EXCEPTIONS
1759 redo_body:
1760 call_body((OP*)&myop, FALSE);
1761#endif
312caa8e
CS		 1762 retval = PL_stack_sp - (PL_stack_base + oldmark);
1763 if (!(flags & G_KEEPERR))
1764 sv_setpv(ERRSV,"");
a0d0e21e 1765 break;
6224f72b 1766 case 1:
f86702cc 1767 STATUS_ALL_FAILURE;
a0d0e21e 1768 /* FALL THROUGH */
6224f72b 1769 case 2:
a0d0e21e 1770 /* my_exit() was called */
3280af22 1771 PL_curstash = PL_defstash;
a0d0e21e 1772 FREETMPS;
14dd3ad8 1773 JMPENV_POP;
cc3604b1 1774 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1775 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1776 my_exit_jump();
a0d0e21e 1777 /* NOTREACHED */
6224f72b 1778 case 3:
3280af22 1779 if (PL_restartop) {
533c011a 1780 PL_op = PL_restartop;
3280af22 1781 PL_restartop = 0;
312caa8e 1782 goto redo_body;
a0d0e21e 1783 }
3280af22 1784 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1785 if (flags & G_ARRAY)
1786 retval = 0;
1787 else {
1788 retval = 1;
3280af22 1789 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1790 }
312caa8e 1791 break;
a0d0e21e 1792 }
a0d0e21e 1793
3280af22 1794 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1795 SV **newsp;
1796 PMOP *newpm;
1797 I32 gimme;
c09156bb 1798 register PERL_CONTEXT *cx;
a0a2876f
LW		 1799 I32 optype;
1800
1801 POPBLOCK(cx,newpm);
1802 POPEVAL(cx);
1803 pop_return();
3280af22 1804 PL_curpm = newpm;
a0a2876f 1805 LEAVE;
a0d0e21e 1806 }
14dd3ad8 1807 JMPENV_POP;
a0d0e21e 1808 }
1e422769 1809
a0d0e21e 1810 if (flags & G_DISCARD) {
3280af22 1811 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1812 retval = 0;
1813 FREETMPS;
1814 LEAVE;
1815 }
533c011a 1816 PL_op = oldop;
a0d0e21e
LW		 1817 return retval;
1818}
1819
14dd3ad8 1820#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1821STATIC void *
14dd3ad8 1822S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1823{
1824 OP *myop = va_arg(args, OP*);
1825 int is_eval = va_arg(args, int);
1826
14dd3ad8 1827 call_body(myop, is_eval);
312caa8e
CS		 1828 return NULL;
1829}
14dd3ad8 1830#endif
312caa8e
CS		 1831
1832STATIC void
14dd3ad8 1833S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1834{
312caa8e
CS		 1835 if (PL_op == myop) {
1836 if (is_eval)
f807eda9 1837 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1838 else
f807eda9 1839 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1840 }
1841 if (PL_op)
cea2e8a9 1842 CALLRUNOPS(aTHX);
312caa8e
CS		 1843}
1844
6e72f9df 1845/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1846
954c1994
GS		 1847/*
1848=for apidoc p||eval_sv
1849
1850Tells Perl to C<eval> the string in the SV.
1851
1852=cut
1853*/
1854
a0d0e21e 1855I32
864dbfa3 1856Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1857
8ac85365 1858 /* See G_* flags in cop.h */
a0d0e21e 1859{
924508f0 1860 dSP;
a0d0e21e 1861 UNOP myop; /* fake syntax tree node */
3280af22 1862 I32 oldmark = SP - PL_stack_base;
4633a7c4 1863 I32 retval;
4633a7c4 1864 I32 oldscope;
6224f72b 1865 int ret;
533c011a 1866 OP* oldop = PL_op;
db36c5a1 1867 dJMPENV;
84902520 1868
4633a7c4
LW		 1869 if (flags & G_DISCARD) {
1870 ENTER;
1871 SAVETMPS;
1872 }
1873
462e5cf6 1874 SAVEOP();
533c011a
NIS		 1875 PL_op = (OP*)&myop;
1876 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1877 EXTEND(PL_stack_sp, 1);
1878 *++PL_stack_sp = sv;
1879 oldscope = PL_scopestack_ix;
79072805 1880
4633a7c4
LW		 1881 if (!(flags & G_NOARGS))
1882 myop.op_flags = OPf_STACKED;
79072805 1883 myop.op_next = Nullop;
6e72f9df 1884 myop.op_type = OP_ENTEREVAL;
54310121 1885 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1886 (flags & G_ARRAY) ? OPf_WANT_LIST :
1887 OPf_WANT_SCALAR);
6e72f9df 1888 if (flags & G_KEEPERR)
1889 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1890
14dd3ad8 1891#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1892 redo_body:
14dd3ad8 1893 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1894 (OP*)&myop, TRUE);
14dd3ad8
GS		 1895#else
1896 JMPENV_PUSH(ret);
1897#endif
6224f72b
GS		 1898 switch (ret) {
1899 case 0:
14dd3ad8
GS		 1900#ifndef PERL_FLEXIBLE_EXCEPTIONS
1901 redo_body:
1902 call_body((OP*)&myop,TRUE);
1903#endif
312caa8e
CS		 1904 retval = PL_stack_sp - (PL_stack_base + oldmark);
1905 if (!(flags & G_KEEPERR))
1906 sv_setpv(ERRSV,"");
4633a7c4 1907 break;
6224f72b 1908 case 1:
f86702cc 1909 STATUS_ALL_FAILURE;
4633a7c4 1910 /* FALL THROUGH */
6224f72b 1911 case 2:
4633a7c4 1912 /* my_exit() was called */
3280af22 1913 PL_curstash = PL_defstash;
4633a7c4 1914 FREETMPS;
14dd3ad8 1915 JMPENV_POP;
cc3604b1 1916 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1917 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1918 my_exit_jump();
4633a7c4 1919 /* NOTREACHED */
6224f72b 1920 case 3:
3280af22 1921 if (PL_restartop) {
533c011a 1922 PL_op = PL_restartop;
3280af22 1923 PL_restartop = 0;
312caa8e 1924 goto redo_body;
4633a7c4 1925 }
3280af22 1926 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1927 if (flags & G_ARRAY)
1928 retval = 0;
1929 else {
1930 retval = 1;
3280af22 1931 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1932 }
312caa8e 1933 break;
4633a7c4
LW		 1934 }
1935
14dd3ad8 1936 JMPENV_POP;
4633a7c4 1937 if (flags & G_DISCARD) {
3280af22 1938 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1939 retval = 0;
1940 FREETMPS;
1941 LEAVE;
1942 }
533c011a 1943 PL_op = oldop;
4633a7c4
LW		 1944 return retval;
1945}
1946
954c1994
GS		 1947/*
1948=for apidoc p||eval_pv
1949
1950Tells Perl to C<eval> the given string and return an SV* result.
1951
1952=cut
1953*/
1954
137443ea 1955SV*
864dbfa3 1956Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1957{
1958 dSP;
1959 SV* sv = newSVpv(p, 0);
1960
864dbfa3 1961 eval_sv(sv, G_SCALAR);
137443ea 1962 SvREFCNT_dec(sv);
1963
1964 SPAGAIN;
1965 sv = POPs;
1966 PUTBACK;
1967
2d8e6c8d
GS		 1968 if (croak_on_error && SvTRUE(ERRSV)) {
1969 STRLEN n_a;
cea2e8a9 1970 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1971 }
137443ea 1972
1973 return sv;
1974}
1975
4633a7c4
LW		 1976/* Require a module. */
1977
954c1994
GS		 1978/*
1979=for apidoc p||require_pv
1980
1981Tells Perl to C<require> a module.
1982
1983=cut
1984*/
1985
4633a7c4 1986void
864dbfa3 1987Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1988{
d3acc0f7
JP		 1989 SV* sv;
1990 dSP;
e788e7d3 1991 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 1992 PUTBACK;
1993 sv = sv_newmortal();
4633a7c4
LW		 1994 sv_setpv(sv, "require '");
1995 sv_catpv(sv, pv);
1996 sv_catpv(sv, "'");
864dbfa3 1997 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 1998 SPAGAIN;
1999 POPSTACK;
79072805
LW		 2000}
2001
79072805 2002void
864dbfa3 2003Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2004{
2005 register GV *gv;
2006
155aba94 2007 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW		 2008 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
2009}
2010
76e3520e 2011STATIC void
cea2e8a9 2012S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2013{
ab821d7f 2014 /* This message really ought to be max 23 lines.
2015 * Removed -h because the user already knows that opton. Others? */
fb73857a 2016
76e3520e 2017 static char *usage_msg[] = {
fb73857a 2018"-0[octal] specify record separator (\\0, if no argument)",
2019"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2020"-C enable native wide character system interfaces",
1950ee41 2021"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2022"-d[:debugger] run program under debugger",
2023"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2024"-e 'command' one line of program (several -e's allowed, omit programfile)",
2025"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2026"-i[extension] edit <> files in place (makes backup if extension supplied)",
2027"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2028"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2029"-[mM][-]module execute `use/no module...' before executing program",
2030"-n assume 'while (<>) { ... }' loop around program",
2031"-p assume loop like -n but print line also, like sed",
2032"-P run program through C preprocessor before compilation",
2033"-s enable rudimentary parsing for switches after programfile",
2034"-S look for programfile using PATH environment variable",
2035"-T enable tainting checks",
2036"-u dump core after parsing program",
fb73857a 2037"-U allow unsafe operations",
aac3bd0d
GS		 2038"-v print version, subversion (includes VERY IMPORTANT perl info)",
2039"-V[:variable] print configuration summary (or a single Config.pm variable)",
2040"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2041"-W enable all warnings",
2042"-X disable all warnings",
fb73857a 2043"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2044"\n",
2045NULL
2046};
76e3520e 2047 char **p = usage_msg;
fb73857a 2048
b0e47665
GS		 2049 PerlIO_printf(PerlIO_stdout(),
2050 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2051 name);
fb73857a 2052 while (*p)
b0e47665 2053 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2054}
2055
79072805
LW		 2056/* This routine handles any switches that can be given during run */
2057
2058char *
864dbfa3 2059Perl_moreswitches(pTHX_ char *s)
79072805 2060{
ba210ebe 2061 STRLEN numlen;
c07a80fd 2062 U32 rschar;
79072805
LW		 2063
2064 switch (*s) {
2065 case '0':
a863c7d1 2066 {
b21ed0a9 2067 numlen = 0; /* disallow underscores */
dff6d3cd 2068 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2069 SvREFCNT_dec(PL_nrs);
c07a80fd 2070 if (rschar & ~((U8)~0))
3280af22 2071 PL_nrs = &PL_sv_undef;
c07a80fd 2072 else if (!rschar && numlen >= 2)
79cb57f6 2073 PL_nrs = newSVpvn("", 0);
c07a80fd 2074 else {
2075 char ch = rschar;
79cb57f6 2076 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2077 }
2078 return s + numlen;
a863c7d1 2079 }
46487f74
GS		 2080 case 'C':
2081 PL_widesyscalls = TRUE;
2082 s++;
2083 return s;
2304df62 2084 case 'F':
3280af22
NIS		 2085 PL_minus_F = TRUE;
2086 PL_splitstr = savepv(s + 1);
2304df62
AD		 2087 s += strlen(s);
2088 return s;
79072805 2089 case 'a':
3280af22 2090 PL_minus_a = TRUE;
79072805
LW		 2091 s++;
2092 return s;
2093 case 'c':
3280af22 2094 PL_minus_c = TRUE;
79072805
LW		 2095 s++;
2096 return s;
2097 case 'd':
bbce6d69 2098 forbid_setid("-d");
4633a7c4 2099 s++;
70c94a19
RR		 2100 /* The following permits -d:Mod to accepts arguments following an =
2101 in the fashion that -MSome::Mod does. */
2102 if (*s == ':' || *s == '=') {
2103 char *start;
2104 SV *sv;
2105 sv = newSVpv("use Devel::", 0);
2106 start = ++s;
2107 /* We now allow -d:Module=Foo,Bar */
2108 while(isALNUM(*s) || *s==':') ++s;
2109 if (*s != '=')
2110 sv_catpv(sv, start);
2111 else {
2112 sv_catpvn(sv, start, s-start);
2113 sv_catpv(sv, " split(/,/,q{");
2114 sv_catpv(sv, ++s);
2115 sv_catpv(sv, "})");
2116 }
4633a7c4 2117 s += strlen(s);
70c94a19 2118 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2119 }
ed094faf 2120 if (!PL_perldb) {
3280af22 2121 PL_perldb = PERLDB_ALL;
a0d0e21e 2122 init_debugger();
ed094faf 2123 }
79072805
LW		 2124 return s;
2125 case 'D':
0453d815 2126 {
79072805 2127#ifdef DEBUGGING
bbce6d69 2128 forbid_setid("-D");
79072805 2129 if (isALPHA(s[1])) {
04932ac8
DM		 2130 /* if adding extra options, remember to update DEBUG_MASK */
2131 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2132 char *d;
2133
93a17b20 2134 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2135 PL_debug |= 1 << (d - debopts);
79072805
LW		 2136 }
2137 else {
3280af22 2138 PL_debug = atoi(s+1);
79072805
LW		 2139 for (s++; isDIGIT(*s); s++) ;
2140 }
aea4f609 2141 PL_debug |= DEBUG_TOP_FLAG;
79072805 2142#else
0453d815
PM		 2143 if (ckWARN_d(WARN_DEBUGGING))
2144 Perl_warner(aTHX_ WARN_DEBUGGING,
2145 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2146 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2147#endif
2148 /*SUPPRESS 530*/
2149 return s;
0453d815 2150 }
4633a7c4 2151 case 'h':
ac27b0f5 2152 usage(PL_origargv[0]);
6ad3d225 2153 PerlProc_exit(0);
79072805 2154 case 'i':
3280af22
NIS		 2155 if (PL_inplace)
2156 Safefree(PL_inplace);
2157 PL_inplace = savepv(s+1);
79072805 2158 /*SUPPRESS 530*/
3280af22 2159 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2160 if (*s) {
fb73857a 2161 *s++ = '\0';
7b8d334a
GS		 2162 if (*s == '-') /* Additional switches on #! line. */
2163 s++;
2164 }
fb73857a 2165 return s;
2166 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2167 forbid_setid("-I");
fb73857a 2168 ++s;
2169 while (*s && isSPACE(*s))
2170 ++s;
2171 if (*s) {
774d564b 2172 char *e, *p;
0df16ed7
GS		 2173 p = s;
2174 /* ignore trailing spaces (possibly followed by other switches) */
2175 do {
2176 for (e = p; *e && !isSPACE(*e); e++) ;
2177 p = e;
2178 while (isSPACE(*p))
2179 p++;
2180 } while (*p && *p != '-');
2181 e = savepvn(s, e-s);
9c8a64f0 2182 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2183 Safefree(e);
2184 s = p;
2185 if (*s == '-')
2186 s++;
79072805
LW		 2187 }
2188 else
a67e862a 2189 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2190 return s;
79072805 2191 case 'l':
3280af22 2192 PL_minus_l = TRUE;
79072805 2193 s++;
7889fe52
NIS		 2194 if (PL_ors_sv) {
2195 SvREFCNT_dec(PL_ors_sv);
2196 PL_ors_sv = Nullsv;
2197 }
79072805 2198 if (isDIGIT(*s)) {
7889fe52 2199 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2200 numlen = 0; /* disallow underscores */
7889fe52 2201 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2202 s += numlen;
2203 }
2204 else {
3280af22 2205 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2206 PL_ors_sv = newSVpvn("\n\n",2);
2207 }
2208 else {
2209 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2210 }
79072805
LW		 2211 }
2212 return s;
1a30305b 2213 case 'M':
bbce6d69 2214 forbid_setid("-M"); /* XXX ? */
1a30305b 2215 /* FALL THROUGH */
2216 case 'm':
bbce6d69 2217 forbid_setid("-m"); /* XXX ? */
1a30305b 2218 if (*++s) {
a5f75d66 2219 char *start;
11343788 2220 SV *sv;
a5f75d66
AD		 2221 char *use = "use ";
2222 /* -M-foo == 'no foo' */
2223 if (*s == '-') { use = "no "; ++s; }
11343788 2224 sv = newSVpv(use,0);
a5f75d66 2225 start = s;
1a30305b 2226 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2227 while(isALNUM(*s) || *s==':') ++s;
2228 if (*s != '=') {
11343788 2229 sv_catpv(sv, start);
c07a80fd 2230 if (*(start-1) == 'm') {
2231 if (*s != '\0')
cea2e8a9 2232 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2233 sv_catpv( sv, " ()");
c07a80fd 2234 }
2235 } else {
6df41af2 2236 if (s == start)
be98fb35
GS		 2237 Perl_croak(aTHX_ "Module name required with -%c option",
2238 s[-1]);
11343788
MB		 2239 sv_catpvn(sv, start, s-start);
2240 sv_catpv(sv, " split(/,/,q{");
2241 sv_catpv(sv, ++s);
2242 sv_catpv(sv, "})");
c07a80fd 2243 }
1a30305b 2244 s += strlen(s);
5c831c24 2245 if (!PL_preambleav)
3280af22
NIS		 2246 PL_preambleav = newAV();
2247 av_push(PL_preambleav, sv);
1a30305b 2248 }
2249 else
cea2e8a9 2250 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2251 return s;
79072805 2252 case 'n':
3280af22 2253 PL_minus_n = TRUE;
79072805
LW		 2254 s++;
2255 return s;
2256 case 'p':
3280af22 2257 PL_minus_p = TRUE;
79072805
LW		 2258 s++;
2259 return s;
2260 case 's':
bbce6d69 2261 forbid_setid("-s");
3280af22 2262 PL_doswitches = TRUE;
79072805
LW		 2263 s++;
2264 return s;
463ee0b2 2265 case 'T':
3280af22 2266 if (!PL_tainting)
cea2e8a9 2267 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2268 s++;
2269 return s;
79072805 2270 case 'u':
bf4acbe4
GS		 2271#ifdef MACOS_TRADITIONAL
2272 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2273#endif
3280af22 2274 PL_do_undump = TRUE;
79072805
LW		 2275 s++;
2276 return s;
2277 case 'U':
3280af22 2278 PL_unsafe = TRUE;
79072805
LW		 2279 s++;
2280 return s;
2281 case 'v':
b0e47665 2282 PerlIO_printf(PerlIO_stdout(),
d2560b70 2283 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2284 PL_patchlevel, ARCHNAME));
fb73857a 2285#if defined(LOCAL_PATCH_COUNT)
2286 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2287 PerlIO_printf(PerlIO_stdout(),
2288 "\n(with %d registered patch%s, "
2289 "see perl -V for more detail)",
2290 (int)LOCAL_PATCH_COUNT,
2291 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2292#endif
1a30305b 2293
b0e47665 2294 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2295 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2296#ifdef MACOS_TRADITIONAL
2297 PerlIO_printf(PerlIO_stdout(),
084592ab 2298 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2299#endif
79072805 2300#ifdef MSDOS
b0e47665
GS		 2301 PerlIO_printf(PerlIO_stdout(),
2302 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2303#endif
2304#ifdef DJGPP
b0e47665
GS		 2305 PerlIO_printf(PerlIO_stdout(),
2306 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2307 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2308#endif
79072805 2309#ifdef OS2
b0e47665
GS		 2310 PerlIO_printf(PerlIO_stdout(),
2311 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2312 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2313#endif
79072805 2314#ifdef atarist
b0e47665
GS		 2315 PerlIO_printf(PerlIO_stdout(),
2316 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2317#endif
a3f9223b 2318#ifdef __BEOS__
b0e47665
GS		 2319 PerlIO_printf(PerlIO_stdout(),
2320 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2321#endif
1d84e8df 2322#ifdef MPE
b0e47665
GS		 2323 PerlIO_printf(PerlIO_stdout(),
2324 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2325#endif
9d116dd7 2326#ifdef OEMVS
b0e47665
GS		 2327 PerlIO_printf(PerlIO_stdout(),
2328 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2329#endif
495c5fdc 2330#ifdef __VOS__
b0e47665
GS		 2331 PerlIO_printf(PerlIO_stdout(),
2332 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2333#endif
092bebab 2334#ifdef __OPEN_VM
b0e47665
GS		 2335 PerlIO_printf(PerlIO_stdout(),
2336 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2337#endif
a1a0e61e 2338#ifdef POSIX_BC
b0e47665
GS		 2339 PerlIO_printf(PerlIO_stdout(),
2340 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2341#endif
61ae2fbf 2342#ifdef __MINT__
b0e47665
GS		 2343 PerlIO_printf(PerlIO_stdout(),
2344 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2345#endif
f83d2536 2346#ifdef EPOC
b0e47665
GS		 2347 PerlIO_printf(PerlIO_stdout(),
2348 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2349#endif
baed7233
DL		 2350#ifdef BINARY_BUILD_NOTICE
2351 BINARY_BUILD_NOTICE;
2352#endif
b0e47665
GS		 2353 PerlIO_printf(PerlIO_stdout(),
2354 "\n\
79072805 2355Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2356GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2357Complete documentation for Perl, including FAQ lists, should be found on\n\
2358this system using `man perl' or `perldoc perl'. If you have access to the\n\
2359Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2360 PerlProc_exit(0);
79072805 2361 case 'w':
599cee73 2362 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2363 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2364 s++;
2365 return s;
2366 case 'W':
ac27b0f5 2367 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2368 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2369 s++;
2370 return s;
2371 case 'X':
ac27b0f5 2372 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2373 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2374 s++;
2375 return s;
a0d0e21e 2376 case '*':
79072805
LW		 2377 case ' ':
2378 if (s[1] == '-') /* Additional switches on #! line. */
2379 return s+2;
2380 break;
a0d0e21e 2381 case '-':
79072805 2382 case 0:
51882d45 2383#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2384 case '\r':
2385#endif
79072805
LW		 2386 case '\n':
2387 case '\t':
2388 break;
aa689395 2389#ifdef ALTERNATE_SHEBANG
2390 case 'S': /* OS/2 needs -S on "extproc" line. */
2391 break;
2392#endif
a0d0e21e 2393 case 'P':
3280af22 2394 if (PL_preprocess)
a0d0e21e
LW		 2395 return s+1;
2396 /* FALL THROUGH */
79072805 2397 default:
cea2e8a9 2398 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2399 }
2400 return Nullch;
2401}
2402
2403/* compliments of Tom Christiansen */
2404
2405/* unexec() can be found in the Gnu emacs distribution */
ee580363 2406/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2407
2408void
864dbfa3 2409Perl_my_unexec(pTHX)
79072805
LW		 2410{
2411#ifdef UNEXEC
46fc3d4c 2412 SV* prog;
2413 SV* file;
ee580363 2414 int status = 1;
79072805
LW		 2415 extern int etext;
2416
ee580363 2417 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2418 sv_catpv(prog, "/perl");
6b88bc9c 2419 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2420 sv_catpv(file, ".perldump");
79072805 2421
ee580363
GS		 2422 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2423 /* unexec prints msg to stderr in case of failure */
6ad3d225 2424 PerlProc_exit(status);
79072805 2425#else
a5f75d66
AD		 2426# ifdef VMS
2427# include <lib$routines.h>
2428 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2429# else
79072805 2430 ABORT(); /* for use with undump */
aa689395 2431# endif
a5f75d66 2432#endif
79072805
LW		 2433}
2434
cb68f92d
GS		 2435/* initialize curinterp */
2436STATIC void
cea2e8a9 2437S_init_interp(pTHX)
cb68f92d
GS		 2438{
2439
066ef5b5 2440#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2441#define I_REINIT \
6b88bc9c
GS		 2442 STMT_START { \
2443 PL_chopset = " \n-"; \
2444 PL_copline = NOLINE; \
2445 PL_curcop = &PL_compiling;\
2446 PL_curcopdb = NULL; \
2447 PL_dbargs = 0; \
3967c732 2448 PL_dumpindent = 4; \
6b88bc9c
GS		 2449 PL_laststatval = -1; \
2450 PL_laststype = OP_STAT; \
2451 PL_maxscream = -1; \
2452 PL_maxsysfd = MAXSYSFD; \
2453 PL_statname = Nullsv; \
2454 PL_tmps_floor = -1; \
2455 PL_tmps_ix = -1; \
2456 PL_op_mask = NULL; \
6b88bc9c
GS		 2457 PL_laststatval = -1; \
2458 PL_laststype = OP_STAT; \
2459 PL_mess_sv = Nullsv; \
2460 PL_splitstr = " "; \
2461 PL_generation = 100; \
2462 PL_exitlist = NULL; \
2463 PL_exitlistlen = 0; \
2464 PL_regindent = 0; \
2465 PL_in_clean_objs = FALSE; \
2466 PL_in_clean_all = FALSE; \
2467 PL_profiledata = NULL; \
2468 PL_rsfp = Nullfp; \
2469 PL_rsfp_filters = Nullav; \
24d3c518 2470 PL_dirty = FALSE; \
cb68f92d 2471 } STMT_END
9666903d 2472 I_REINIT;
066ef5b5
GS		 2473#else
2474# ifdef MULTIPLICITY
2475# define PERLVAR(var,type)
51371543 2476# define PERLVARA(var,n,type)
cea2e8a9 2477# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2478# if defined(USE_THREADS)
2479# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2480# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2481# else /* !USE_THREADS */
2482# define PERLVARI(var,type,init) aTHX->var = init;
2483# define PERLVARIC(var,type,init) aTHX->var = init;
2484# endif /* USE_THREADS */
cea2e8a9 2485# else
c5be433b
GS		 2486# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2487# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2488# endif
066ef5b5
GS		 2489# include "intrpvar.h"
2490# ifndef USE_THREADS
2491# include "thrdvar.h"
2492# endif
2493# undef PERLVAR
51371543 2494# undef PERLVARA
066ef5b5
GS		 2495# undef PERLVARI
2496# undef PERLVARIC
3967c732 2497# else
066ef5b5 2498# define PERLVAR(var,type)
51371543 2499# define PERLVARA(var,n,type)
533c011a
NIS		 2500# define PERLVARI(var,type,init) PL_##var = init;
2501# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2502# include "intrpvar.h"
2503# ifndef USE_THREADS
2504# include "thrdvar.h"
2505# endif
2506# undef PERLVAR
51371543 2507# undef PERLVARA
066ef5b5
GS		 2508# undef PERLVARI
2509# undef PERLVARIC
2510# endif
cb68f92d
GS		 2511#endif
2512
cb68f92d
GS		 2513}
2514
76e3520e 2515STATIC void
cea2e8a9 2516S_init_main_stash(pTHX)
79072805 2517{
463ee0b2 2518 GV *gv;
6e72f9df 2519
2520 /* Note that strtab is a rather special HV. Assumptions are made
2521 about not iterating on it, and not adding tie magic to it.
2522 It is properly deallocated in perl_destruct() */
3280af22 2523 PL_strtab = newHV();
5f08fbcd
GS		 2524#ifdef USE_THREADS
2525 MUTEX_INIT(&PL_strtab_mutex);
2526#endif
3280af22
NIS		 2527 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2528 hv_ksplit(PL_strtab, 512);
ac27b0f5 2529
3280af22 2530 PL_curstash = PL_defstash = newHV();
79cb57f6 2531 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2532 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2533 SvREFCNT_dec(GvHV(gv));
3280af22 2534 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2535 SvREADONLY_on(gv);
3280af22
NIS		 2536 HvNAME(PL_defstash) = savepv("main");
2537 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2538 GvMULTI_on(PL_incgv);
2539 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2540 GvMULTI_on(PL_hintgv);
2541 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2542 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2543 GvMULTI_on(PL_errgv);
2544 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2545 GvMULTI_on(PL_replgv);
cea2e8a9 2546 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2547 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2548 sv_setpvn(ERRSV, "", 0);
3280af22 2549 PL_curstash = PL_defstash;
11faa288 2550 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2551 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2552 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2553 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2554 /* We must init $/ before switches are processed. */
864dbfa3 2555 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2556}
2557
76e3520e 2558STATIC void
cea2e8a9 2559S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2560{
6c4ab083 2561 *fdscript = -1;
79072805 2562
3280af22
NIS		 2563 if (PL_e_script) {
2564 PL_origfilename = savepv("-e");
96436eeb 2565 }
6c4ab083
GS		 2566 else {
2567 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2568 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2569
2570 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2571 char *s = scriptname + 8;
2572 *fdscript = atoi(s);
2573 while (isDIGIT(*s))
2574 s++;
2575 if (*s) {
2576 scriptname = savepv(s + 1);
3280af22
NIS		 2577 Safefree(PL_origfilename);
2578 PL_origfilename = scriptname;
6c4ab083
GS		 2579 }
2580 }
2581 }
2582
f4dd75d9
GS		 2583#ifdef USE_ITHREADS
2584 Safefree(CopFILE(PL_curcop));
2585#else
2586 SvREFCNT_dec(CopFILEGV(PL_curcop));
2587#endif
57843af0 2588 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2589 if (strEQ(PL_origfilename,"-"))
79072805 2590 scriptname = "";
01f988be 2591 if (*fdscript >= 0) {
3280af22 2592 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2593#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2594 if (PL_rsfp)
2595 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2596#endif
2597 }
3280af22 2598 else if (PL_preprocess) {
46fc3d4c 2599 char *cpp_cfg = CPPSTDIN;
79cb57f6 2600 SV *cpp = newSVpvn("",0);
46fc3d4c 2601 SV *cmd = NEWSV(0,0);
2602
2603 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2604 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2605 sv_catpv(cpp, cpp_cfg);
79072805 2606
0df16ed7 2607 sv_catpvn(sv, "-I", 2);
fed7345c 2608 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2609
52853b95 2610#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2611 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2612sed %s -e \"/^[^#]/b\" \
2613 -e \"/^#[ ]*include[ ]/b\" \
2614 -e \"/^#[ ]*define[ ]/b\" \
2615 -e \"/^#[ ]*if[ ]/b\" \
2616 -e \"/^#[ ]*ifdef[ ]/b\" \
2617 -e \"/^#[ ]*ifndef[ ]/b\" \
2618 -e \"/^#[ ]*else/b\" \
2619 -e \"/^#[ ]*elif[ ]/b\" \
2620 -e \"/^#[ ]*undef[ ]/b\" \
2621 -e \"/^#[ ]*endif/b\" \
2622 -e \"s/^#.*//\" \
894356b3 2623 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2624 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2625#else
092bebab 2626# ifdef __OPEN_VM
cea2e8a9 2627 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2628%s %s -e '/^[^#]/b' \
2629 -e '/^#[ ]*include[ ]/b' \
2630 -e '/^#[ ]*define[ ]/b' \
2631 -e '/^#[ ]*if[ ]/b' \
2632 -e '/^#[ ]*ifdef[ ]/b' \
2633 -e '/^#[ ]*ifndef[ ]/b' \
2634 -e '/^#[ ]*else/b' \
2635 -e '/^#[ ]*elif[ ]/b' \
2636 -e '/^#[ ]*undef[ ]/b' \
2637 -e '/^#[ ]*endif/b' \
2638 -e 's/^[ ]*#.*//' \
894356b3 2639 %s | %"SVf" %"SVf" %s",
092bebab 2640# else
cea2e8a9 2641 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2642%s %s -e '/^[^#]/b' \
2643 -e '/^#[ ]*include[ ]/b' \
2644 -e '/^#[ ]*define[ ]/b' \
2645 -e '/^#[ ]*if[ ]/b' \
2646 -e '/^#[ ]*ifdef[ ]/b' \
2647 -e '/^#[ ]*ifndef[ ]/b' \
2648 -e '/^#[ ]*else/b' \
2649 -e '/^#[ ]*elif[ ]/b' \
2650 -e '/^#[ ]*undef[ ]/b' \
2651 -e '/^#[ ]*endif/b' \
2652 -e 's/^[ ]*#.*//' \
894356b3 2653 %s | %"SVf" -C %"SVf" %s",
092bebab 2654# endif
79072805
LW		 2655#ifdef LOC_SED
2656 LOC_SED,
2657#else
2658 "sed",
2659#endif
3280af22 2660 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2661#endif
46fc3d4c 2662 scriptname, cpp, sv, CPPMINUS);
3280af22 2663 PL_doextract = FALSE;
79072805 2664#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2665 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2666#ifdef HAS_SETEUID
b28d0864 2667 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2668#else
2669#ifdef HAS_SETREUID
b28d0864 2670 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2671#else
2672#ifdef HAS_SETRESUID
b28d0864 2673 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2674#else
b28d0864 2675 PerlProc_setuid(PL_uid);
79072805
LW		 2676#endif
2677#endif
85e6fe83 2678#endif
b28d0864 2679 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2680 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2681 }
2682#endif /* IAMSUID */
3280af22 2683 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2684 SvREFCNT_dec(cmd);
2685 SvREFCNT_dec(cpp);
79072805
LW		 2686 }
2687 else if (!*scriptname) {
bbce6d69 2688 forbid_setid("program input from stdin");
3280af22 2689 PL_rsfp = PerlIO_stdin();
79072805 2690 }
96436eeb 2691 else {
3280af22 2692 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2693#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2694 if (PL_rsfp)
2695 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2696#endif
2697 }
3280af22 2698 if (!PL_rsfp) {
13281fa4 2699#ifdef DOSUID
a687059c 2700#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2701 if (PL_euid &&
cc49e20b 2702 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2703 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2704 {
46fc3d4c 2705 /* try again */
a7cb1f99 2706 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2707 (int)PERL_REVISION, (int)PERL_VERSION,
2708 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2709 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2710 }
2711#endif
2712#endif
cea2e8a9 2713 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2714 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2715 }
79072805 2716}
8d063cd8 2717
7b89560d
JH		 2718/* Mention
2719 * I_SYSSTATVFS HAS_FSTATVFS
2720 * I_SYSMOUNT
c890dc6c 2721 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2722 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2723 * here so that metaconfig picks them up. */
2724
104d25b7 2725#ifdef IAMSUID
864dbfa3 2726STATIC int
e688b231 2727S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2728{
0545a864
JH		 2729 int check_okay = 0; /* able to do all the required sys/libcalls */
2730 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2731/*
ad27e871 2732 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2733 * fstatvfs() is UNIX98.
0545a864 2734 * fstatfs() is 4.3 BSD.
ad27e871 2735 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2736 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2737 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2738 */
2739
6439433f
JH		 2740#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2741
2742# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2743 defined(HAS_FSTATVFS)
2744# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2745 struct statvfs stfs;
6439433f 2746
104d25b7
JH		 2747 check_okay = fstatvfs(fd, &stfs) == 0;
2748 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2749# endif /* fstatvfs */
ac27b0f5 2750
6439433f
JH		 2751# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2752 defined(PERL_MOUNT_NOSUID) && \
2753 defined(HAS_FSTATFS) && \
2754 defined(HAS_STRUCT_STATFS) && \
2755 defined(HAS_STRUCT_STATFS_F_FLAGS)
2756# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2757 struct statfs stfs;
6439433f 2758
104d25b7 2759 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2760 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2761# endif /* fstatfs */
2762
2763# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2764 defined(PERL_MOUNT_NOSUID) && \
2765 defined(HAS_FSTAT) && \
2766 defined(HAS_USTAT) && \
2767 defined(HAS_GETMNT) && \
2768 defined(HAS_STRUCT_FS_DATA) && \
2769 defined(NOSTAT_ONE)
2770# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2771 struct stat fdst;
6439433f 2772
0545a864 2773 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2774 struct ustat us;
2775 if (ustat(fdst.st_dev, &us) == 0) {
2776 struct fs_data fsd;
2777 /* NOSTAT_ONE here because we're not examining fields which
2778 * vary between that case and STAT_ONE. */
ad27e871 2779 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2780 size_t cmplen = sizeof(us.f_fname);
2781 if (sizeof(fsd.fd_req.path) < cmplen)
2782 cmplen = sizeof(fsd.fd_req.path);
2783 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2784 fdst.st_dev == fsd.fd_req.dev) {
2785 check_okay = 1;
2786 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2787 }
2788 }
2789 }
2790 }
0545a864 2791 }
6439433f
JH		 2792# endif /* fstat+ustat+getmnt */
2793
2794# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2795 defined(HAS_GETMNTENT) && \
2796 defined(HAS_HASMNTOPT) && \
2797 defined(MNTOPT_NOSUID)
2798# define FD_ON_NOSUID_CHECK_OKAY
2799 FILE *mtab = fopen("/etc/mtab", "r");
2800 struct mntent *entry;
2801 struct stat stb, fsb;
104d25b7
JH		 2802
2803 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2804 while (entry = getmntent(mtab)) {
2805 if (stat(entry->mnt_dir, &fsb) == 0
2806 && fsb.st_dev == stb.st_dev)
2807 {
2808 /* found the filesystem */
2809 check_okay = 1;
2810 if (hasmntopt(entry, MNTOPT_NOSUID))
2811 on_nosuid = 1;
2812 break;
2813 } /* A single fs may well fail its stat(). */
2814 }
104d25b7
JH		 2815 }
2816 if (mtab)
6439433f
JH		 2817 fclose(mtab);
2818# endif /* getmntent+hasmntopt */
0545a864 2819
ac27b0f5 2820 if (!check_okay)
0545a864 2821 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2822 return on_nosuid;
2823}
2824#endif /* IAMSUID */
2825
76e3520e 2826STATIC void
cea2e8a9 2827S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2828{
155aba94 2829#ifdef IAMSUID
96436eeb 2830 int which;
155aba94 2831#endif
96436eeb 2832
13281fa4
LW		 2833 /* do we need to emulate setuid on scripts? */
2834
2835 /* This code is for those BSD systems that have setuid #! scripts disabled
2836 * in the kernel because of a security problem. Merely defining DOSUID
2837 * in perl will not fix that problem, but if you have disabled setuid
2838 * scripts in the kernel, this will attempt to emulate setuid and setgid
2839 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2840 * root version must be called suidperl or sperlN.NNN. If regular perl
2841 * discovers that it has opened a setuid script, it calls suidperl with
2842 * the same argv that it had. If suidperl finds that the script it has
2843 * just opened is NOT setuid root, it sets the effective uid back to the
2844 * uid. We don't just make perl setuid root because that loses the
2845 * effective uid we had before invoking perl, if it was different from the
2846 * uid.
13281fa4
LW		 2847 *
2848 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2849 * be defined in suidperl only. suidperl must be setuid root. The
2850 * Configure script will set this up for you if you want it.
2851 */
a687059c 2852
13281fa4 2853#ifdef DOSUID
6e72f9df 2854 char *s, *s2;
a0d0e21e 2855
b28d0864 2856 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2857 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2858 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2859 I32 len;
2d8e6c8d 2860 STRLEN n_a;
13281fa4 2861
a687059c 2862#ifdef IAMSUID
fe14fcc3 2863#ifndef HAS_SETREUID
a687059c
LW		 2864 /* On this access check to make sure the directories are readable,
2865 * there is actually a small window that the user could use to make
2866 * filename point to an accessible directory. So there is a faint
2867 * chance that someone could execute a setuid script down in a
2868 * non-accessible directory. I don't know what to do about that.
2869 * But I don't think it's too important. The manual lies when
2870 * it says access() is useful in setuid programs.
2871 */
cc49e20b 2872 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2873 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2874#else
2875 /* If we can swap euid and uid, then we can determine access rights
2876 * with a simple stat of the file, and then compare device and
2877 * inode to make sure we did stat() on the same file we opened.
2878 * Then we just have to make sure he or she can execute it.
2879 */
2880 {
2881 struct stat tmpstatbuf;
2882
85e6fe83
LW		 2883 if (
2884#ifdef HAS_SETREUID
b28d0864 2885 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2886#else
2887# if HAS_SETRESUID
b28d0864 2888 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2889# endif
85e6fe83 2890#endif
b28d0864 2891 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2892 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2893 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2894 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2895#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2896 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2897 Perl_croak(aTHX_ "Permission denied");
104d25b7 2898#endif
b28d0864
NIS		 2899 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2900 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2901 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2902 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2903 }
85e6fe83
LW		 2904 if (
2905#ifdef HAS_SETREUID
b28d0864 2906 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2907#else
2908# if defined(HAS_SETRESUID)
b28d0864 2909 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2910# endif
85e6fe83 2911#endif
b28d0864 2912 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2913 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2914 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2915 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2916 }
fe14fcc3 2917#endif /* HAS_SETREUID */
a687059c
LW		 2918#endif /* IAMSUID */
2919
b28d0864 2920 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2921 Perl_croak(aTHX_ "Permission denied");
b28d0864 2922 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2923 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2924 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2925 CopLINE_inc(PL_curcop);
6b88bc9c 2926 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2927 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2928 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2929 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2930 if (*s == ' ') s++;
45d8adaa 2931 while (!isSPACE(*s)) s++;
2d8e6c8d 2932 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2933 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2934 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2935 Perl_croak(aTHX_ "Not a perl script");
a687059c 2936 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2937 /*
2938 * #! arg must be what we saw above. They can invoke it by
2939 * mentioning suidperl explicitly, but they may not add any strange
2940 * arguments beyond what #! says if they do invoke suidperl that way.
2941 */
2942 len = strlen(validarg);
2943 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2944 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2945 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2946
2947#ifndef IAMSUID
b28d0864
NIS		 2948 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2949 PL_euid == PL_statbuf.st_uid)
2950 if (!PL_do_undump)
cea2e8a9 2951 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2952FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2953#endif /* IAMSUID */
13281fa4 2954
b28d0864
NIS		 2955 if (PL_euid) { /* oops, we're not the setuid root perl */
2956 (void)PerlIO_close(PL_rsfp);
13281fa4 2957#ifndef IAMSUID
46fc3d4c 2958 /* try again */
a7cb1f99 2959 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2960 (int)PERL_REVISION, (int)PERL_VERSION,
2961 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2962#endif
cea2e8a9 2963 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2964 }
2965
b28d0864 2966 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2967#ifdef HAS_SETEGID
b28d0864 2968 (void)setegid(PL_statbuf.st_gid);
a687059c 2969#else
fe14fcc3 2970#ifdef HAS_SETREGID
b28d0864 2971 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 2972#else
2973#ifdef HAS_SETRESGID
b28d0864 2974 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2975#else
b28d0864 2976 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 2977#endif
2978#endif
85e6fe83 2979#endif
b28d0864 2980 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2981 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2982 }
b28d0864
NIS		 2983 if (PL_statbuf.st_mode & S_ISUID) {
2984 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2985#ifdef HAS_SETEUID
b28d0864 2986 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2987#else
fe14fcc3 2988#ifdef HAS_SETREUID
b28d0864 2989 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 2990#else
2991#ifdef HAS_SETRESUID
b28d0864 2992 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2993#else
b28d0864 2994 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 2995#endif
2996#endif
85e6fe83 2997#endif
b28d0864 2998 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2999 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3000 }
b28d0864 3001 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3002#ifdef HAS_SETEUID
b28d0864 3003 (void)seteuid((Uid_t)PL_uid);
a687059c 3004#else
fe14fcc3 3005#ifdef HAS_SETREUID
b28d0864 3006 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3007#else
85e6fe83 3008#ifdef HAS_SETRESUID
b28d0864 3009 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3010#else
b28d0864 3011 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3012#endif
a687059c
LW		 3013#endif
3014#endif
b28d0864 3015 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3016 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3017 }
748a9306 3018 init_ids();
b28d0864 3019 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3020 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3021 }
3022#ifdef IAMSUID
6b88bc9c 3023 else if (PL_preprocess)
cea2e8a9 3024 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3025 else if (fdscript >= 0)
cea2e8a9 3026 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3027 else
cea2e8a9 3028 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3029
3030 /* We absolutely must clear out any saved ids here, so we */
3031 /* exec the real perl, substituting fd script for scriptname. */
3032 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3033 PerlIO_rewind(PL_rsfp);
3034 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3035 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3036 if (!PL_origargv[which])
cea2e8a9
GS		 3037 Perl_croak(aTHX_ "Permission denied");
3038 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3039 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3040#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3041 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3042#endif
a7cb1f99 3043 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3044 (int)PERL_REVISION, (int)PERL_VERSION,
3045 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3046 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3047#endif /* IAMSUID */
a687059c 3048#else /* !DOSUID */
3280af22 3049 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3050#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3051 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3052 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3053 ||
b28d0864 3054 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3055 )
b28d0864 3056 if (!PL_do_undump)
cea2e8a9 3057 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3058FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3059#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3060 /* not set-id, must be wrapped */
a687059c 3061 }
13281fa4 3062#endif /* DOSUID */
79072805 3063}
13281fa4 3064
76e3520e 3065STATIC void
cea2e8a9 3066S_find_beginning(pTHX)
79072805 3067{
6e72f9df 3068 register char *s, *s2;
33b78306
LW		 3069
3070 /* skip forward in input to the real script? */
3071
bbce6d69 3072 forbid_setid("-x");
bf4acbe4 3073#ifdef MACOS_TRADITIONAL
084592ab 3074 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3075
bf4acbe4
GS		 3076 while (PL_doextract || gMacPerl_AlwaysExtract) {
3077 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3078 if (!gMacPerl_AlwaysExtract)
3079 Perl_croak(aTHX_ "No Perl script found in input\n");
3080
3081 if (PL_doextract) /* require explicit override ? */
3082 if (!OverrideExtract(PL_origfilename))
3083 Perl_croak(aTHX_ "User aborted script\n");
3084 else
3085 PL_doextract = FALSE;
3086
3087 /* Pater peccavi, file does not have #! */
3088 PerlIO_rewind(PL_rsfp);
ac27b0f5 3089
bf4acbe4
GS		 3090 break;
3091 }
3092#else
3280af22
NIS		 3093 while (PL_doextract) {
3094 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3095 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3096#endif
6e72f9df 3097 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3098 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3099 PL_doextract = FALSE;
6e72f9df 3100 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3101 s2 = s;
3102 while (*s == ' ' || *s == '\t') s++;
3103 if (*s++ == '-') {
3104 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3105 if (strnEQ(s2-4,"perl",4))
3106 /*SUPPRESS 530*/
155aba94
GS		 3107 while ((s = moreswitches(s)))
3108 ;
33b78306 3109 }
83025b21
LW		 3110 }
3111 }
3112}
3113
afe37c7d 3114
76e3520e 3115STATIC void
cea2e8a9 3116S_init_ids(pTHX)
352d5a3a 3117{
d8eceb89
JH		 3118 PL_uid = PerlProc_getuid();
3119 PL_euid = PerlProc_geteuid();
3120 PL_gid = PerlProc_getgid();
3121 PL_egid = PerlProc_getegid();
748a9306 3122#ifdef VMS
b28d0864
NIS		 3123 PL_uid |= PL_gid << 16;
3124 PL_euid |= PL_egid << 16;
748a9306 3125#endif
3280af22 3126 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3127}
79072805 3128
76e3520e 3129STATIC void
cea2e8a9 3130S_forbid_setid(pTHX_ char *s)
bbce6d69 3131{
3280af22 3132 if (PL_euid != PL_uid)
cea2e8a9 3133 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3134 if (PL_egid != PL_gid)
cea2e8a9 3135 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3136}
3137
1ee4443e
IZ		 3138void
3139Perl_init_debugger(pTHX)
748a9306 3140{
1ee4443e
IZ		 3141 HV *ostash = PL_curstash;
3142
3280af22
NIS		 3143 PL_curstash = PL_debstash;
3144 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3145 AvREAL_off(PL_dbargs);
3146 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3147 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3148 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3149 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3150 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3151 sv_setiv(PL_DBsingle, 0);
3280af22 3152 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3153 sv_setiv(PL_DBtrace, 0);
3280af22 3154 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3155 sv_setiv(PL_DBsignal, 0);
1ee4443e 3156 PL_curstash = ostash;
352d5a3a
LW		 3157}
3158
2ce36478
SM		 3159#ifndef STRESS_REALLOC
3160#define REASONABLE(size) (size)
3161#else
3162#define REASONABLE(size) (1) /* unreasonable */
3163#endif
3164
11343788 3165void
cea2e8a9 3166Perl_init_stacks(pTHX)
79072805 3167{
e336de0d 3168 /* start with 128-item stack and 8K cxstack */
3280af22 3169 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3170 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3171 PL_curstackinfo->si_type = PERLSI_MAIN;
3172 PL_curstack = PL_curstackinfo->si_stack;
3173 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3174
3280af22
NIS		 3175 PL_stack_base = AvARRAY(PL_curstack);
3176 PL_stack_sp = PL_stack_base;
3177 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3178
3280af22
NIS		 3179 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3180 PL_tmps_floor = -1;
3181 PL_tmps_ix = -1;
3182 PL_tmps_max = REASONABLE(128);
8990e307 3183
3280af22
NIS		 3184 New(54,PL_markstack,REASONABLE(32),I32);
3185 PL_markstack_ptr = PL_markstack;
3186 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3187
ce2f7c3b 3188 SET_MARK_OFFSET;
e336de0d 3189
3280af22
NIS		 3190 New(54,PL_scopestack,REASONABLE(32),I32);
3191 PL_scopestack_ix = 0;
3192 PL_scopestack_max = REASONABLE(32);
79072805 3193
3280af22
NIS		 3194 New(54,PL_savestack,REASONABLE(128),ANY);
3195 PL_savestack_ix = 0;
3196 PL_savestack_max = REASONABLE(128);
79072805 3197
3280af22
NIS		 3198 New(54,PL_retstack,REASONABLE(16),OP*);
3199 PL_retstack_ix = 0;
3200 PL_retstack_max = REASONABLE(16);
378cc40b 3201}
33b78306 3202
2ce36478
SM		 3203#undef REASONABLE
3204
76e3520e 3205STATIC void
cea2e8a9 3206S_nuke_stacks(pTHX)
6e72f9df 3207{
3280af22
NIS		 3208 while (PL_curstackinfo->si_next)
3209 PL_curstackinfo = PL_curstackinfo->si_next;
3210 while (PL_curstackinfo) {
3211 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3212 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3213 Safefree(PL_curstackinfo->si_cxstack);
3214 Safefree(PL_curstackinfo);
3215 PL_curstackinfo = p;
e336de0d 3216 }
3280af22
NIS		 3217 Safefree(PL_tmps_stack);
3218 Safefree(PL_markstack);
3219 Safefree(PL_scopestack);
3220 Safefree(PL_savestack);
3221 Safefree(PL_retstack);
378cc40b 3222}
33b78306 3223
76e3520e 3224#ifndef PERL_OBJECT
760ac839 3225static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3226#endif
7aa04957 3227
76e3520e 3228STATIC void
cea2e8a9 3229S_init_lexer(pTHX)
8990e307 3230{
76e3520e
GS		 3231#ifdef PERL_OBJECT
3232 PerlIO *tmpfp;
3233#endif
3280af22
NIS		 3234 tmpfp = PL_rsfp;
3235 PL_rsfp = Nullfp;
3236 lex_start(PL_linestr);
3237 PL_rsfp = tmpfp;
79cb57f6 3238 PL_subname = newSVpvn("main",4);
8990e307
LW		 3239}
3240
76e3520e 3241STATIC void
cea2e8a9 3242S_init_predump_symbols(pTHX)
45d8adaa 3243{
93a17b20 3244 GV *tmpgv;
af8c498a 3245 IO *io;
79072805 3246
864dbfa3 3247 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3248 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3249 GvMULTI_on(PL_stdingv);
af8c498a
GS		 3250 io = GvIOp(PL_stdingv);
3251 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3252 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3253 GvMULTI_on(tmpgv);
af8c498a 3254 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3255
85e6fe83 3256 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3257 GvMULTI_on(tmpgv);
af8c498a
GS		 3258 io = GvIOp(tmpgv);
3259 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3260 setdefout(tmpgv);
adbc6bb1 3261 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3262 GvMULTI_on(tmpgv);
af8c498a 3263 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3264
bf49b057
GS		 3265 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3266 GvMULTI_on(PL_stderrgv);
3267 io = GvIOp(PL_stderrgv);
af8c498a 3268 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3269 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3270 GvMULTI_on(tmpgv);
af8c498a 3271 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3272
3280af22 3273 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3274
bf4acbe4
GS		 3275 if (PL_osname)
3276 Safefree(PL_osname);
3277 PL_osname = savepv(OSNAME);
79072805 3278}
33b78306 3279
76e3520e 3280STATIC void
cea2e8a9 3281S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3282{
79072805
LW		 3283 char *s;
3284 SV *sv;
3285 GV* tmpgv;
103a7189 3286 char **dup_env_base = 0;
9cbac4c7 3287#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189 3288 int dup_env_count = 0;
9cbac4c7 3289#endif
fe14fcc3 3290
79072805 3291 argc--,argv++; /* skip name of script */
3280af22 3292 if (PL_doswitches) {
79072805
LW		 3293 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3294 if (!argv[0][1])
3295 break;
379d538a 3296 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3297 argc--,argv++;
3298 break;
3299 }
155aba94 3300 if ((s = strchr(argv[0], '='))) {
79072805 3301 *s++ = '\0';
85e6fe83 3302 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3303 }
3304 else
85e6fe83 3305 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3306 }
79072805 3307 }
3280af22
NIS		 3308 PL_toptarget = NEWSV(0,0);
3309 sv_upgrade(PL_toptarget, SVt_PVFM);
3310 sv_setpvn(PL_toptarget, "", 0);
3311 PL_bodytarget = NEWSV(0,0);
3312 sv_upgrade(PL_bodytarget, SVt_PVFM);
3313 sv_setpvn(PL_bodytarget, "", 0);
3314 PL_formtarget = PL_bodytarget;
79072805 3315
bbce6d69 3316 TAINT;
155aba94 3317 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3318#ifdef MACOS_TRADITIONAL
3319 /* $0 is not majick on a Mac */
3320 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3321#else
3280af22 3322 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3323 magicname("0", "0", 1);
bf4acbe4 3324#endif
79072805 3325 }
155aba94 3326 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3327#ifdef OS2
23da6c43 3328 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3329#else
3280af22 3330 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3331#endif
155aba94 3332 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3333 GvMULTI_on(PL_argvgv);
3334 (void)gv_AVadd(PL_argvgv);
3335 av_clear(GvAVn(PL_argvgv));
79072805 3336 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3337 SV *sv = newSVpv(argv[0],0);
3338 av_push(GvAVn(PL_argvgv),sv);
3339 if (PL_widesyscalls)
e84ff256 3340 (void)sv_utf8_decode(sv);
79072805
LW		 3341 }
3342 }
155aba94 3343 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3344 HV *hv;
3280af22
NIS		 3345 GvMULTI_on(PL_envgv);
3346 hv = GvHVn(PL_envgv);
65c50114 3347 hv_magic(hv, Nullgv, 'E');
fa6a1c44 3348#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3349 /* Note that if the supplied env parameter is actually a copy
3350 of the global environ then it may now point to free'd memory
3351 if the environment has been modified since. To avoid this
3352 problem we treat env==NULL as meaning 'use the default'
3353 */
3354 if (!env)
3355 env = environ;
5aabfad6 3356 if (env != environ)
79072805 3357 environ[0] = Nullch;
103a7189
JH		 3358#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3359 {
3360 char **env_base;
9041c2e3 3361 for (env_base = env; *env; env++)
103a7189
JH		 3362 dup_env_count++;
3363 if ((dup_env_base = (char **)
480bfd1e 3364 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3365 char **dup_env;
3366 for (env = env_base, dup_env = dup_env_base;
3367 *env;
480bfd1e
JH		 3368 env++, dup_env++) {
3369 /* With environ one needs to use safesysmalloc(). */
3370 *dup_env = safesysmalloc(strlen(*env) + 1);
3371 (void)strcpy(*dup_env, *env);
3372 }
103a7189
JH		 3373 *dup_env = Nullch;
3374 env = dup_env_base;
3375 } /* else what? */
3376 }
3377#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3378 for (; *env; env++) {
93a17b20 3379 if (!(s = strchr(*env,'=')))
79072805
LW		 3380 continue;
3381 *s++ = '\0';
60ce6247 3382#if defined(MSDOS)
137443ea 3383 (void)strupr(*env);
3384#endif
79072805
LW		 3385 sv = newSVpv(s--,0);
3386 (void)hv_store(hv, *env, s - *env, sv, 0);
3387 *s = '=';
fe14fcc3 3388 }
480bfd1e 3389#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3390 if (dup_env_base) {
3391 char **dup_env;
3392 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3393 safesysfree(*dup_env);
3394 safesysfree(dup_env_base);
103a7189 3395 }
7e0f6a1f 3396#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3397#endif /* USE_ENVIRON_ARRAY */
4550b24a 3398#ifdef DYNAMIC_ENV_FETCH
3399 HvNAME(hv) = savepv(ENV_HV_NAME);
3400#endif
79072805 3401 }
bbce6d69 3402 TAINT_NOT;
155aba94 3403 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3404 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3405}
34de22dd 3406
76e3520e 3407STATIC void
cea2e8a9 3408S_init_perllib(pTHX)
34de22dd 3409{
85e6fe83 3410 char *s;
3280af22 3411 if (!PL_tainting) {
552a7a9b 3412#ifndef VMS
76e3520e 3413 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3414 if (s)
9c8a64f0 3415 incpush(s, TRUE, TRUE);
85e6fe83 3416 else
9c8a64f0 3417 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3418#else /* VMS */
3419 /* Treat PERL5?LIB as a possible search list logical name -- the
3420 * "natural" VMS idiom for a Unix path string. We allow each
3421 * element to be a set of |-separated directories for compatibility.
3422 */
3423 char buf[256];
3424 int idx = 0;
3425 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3426 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3427 else
9c8a64f0 3428 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3429#endif /* VMS */
85e6fe83 3430 }
34de22dd 3431
c90c0ff4 3432/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3433 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3434*/
4633a7c4 3435#ifdef APPLLIB_EXP
9c8a64f0 3436 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3437#endif
4633a7c4 3438
fed7345c 3439#ifdef ARCHLIB_EXP
9c8a64f0 3440 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3441#endif
bf4acbe4
GS		 3442#ifdef MACOS_TRADITIONAL
3443 {
3444 struct stat tmpstatbuf;
3445 SV * privdir = NEWSV(55, 0);
3446 char * macperl = PerlEnv_getenv("MACPERL");
3447
3448 if (!macperl)
3449 macperl = "";
3450
3451 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3452 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3453 incpush(SvPVX(privdir), TRUE, FALSE);
3454 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3455 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3456 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3457
bf4acbe4
GS		 3458 SvREFCNT_dec(privdir);
3459 }
3460 if (!PL_tainting)
3461 incpush(":", FALSE, FALSE);
3462#else
fed7345c 3463#ifndef PRIVLIB_EXP
65f19062 3464# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3465#endif
ac27b0f5 3466#if defined(WIN32)
9c8a64f0 3467 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3468#else
9c8a64f0 3469 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3470#endif
4633a7c4 3471
65f19062 3472#ifdef SITEARCH_EXP
3b290362
GS		 3473 /* sitearch is always relative to sitelib on Windows for
3474 * DLL-based path intuition to work correctly */
3475# if !defined(WIN32)
9c8a64f0 3476 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3477# endif
3478#endif
3479
4633a7c4 3480#ifdef SITELIB_EXP
65f19062 3481# if defined(WIN32)
9c8a64f0 3482 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3483# else
9c8a64f0 3484 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3485# endif
3486#endif
189d1e8d 3487
65f19062 3488#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3489 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3490#endif
65f19062
GS		 3491
3492#ifdef PERL_VENDORARCH_EXP
4ea817c6 3493 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3494 * DLL-based path intuition to work correctly */
3495# if !defined(WIN32)
9c8a64f0 3496 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3497# endif
4b03c463 3498#endif
65f19062
GS		 3499
3500#ifdef PERL_VENDORLIB_EXP
3501# if defined(WIN32)
9c8a64f0 3502 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3503# else
9c8a64f0 3504 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3505# endif
a3635516 3506#endif
65f19062
GS		 3507
3508#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3509 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3510#endif
65f19062 3511
3b777bb4
GS		 3512#ifdef PERL_OTHERLIBDIRS
3513 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3514#endif
3515
3280af22 3516 if (!PL_tainting)
9c8a64f0 3517 incpush(".", FALSE, FALSE);
bf4acbe4 3518#endif /* MACOS_TRADITIONAL */
774d564b 3519}
3520
ed79a026 3521#if defined(DOSISH) || defined(EPOC)
774d564b 3522# define PERLLIB_SEP ';'
3523#else
3524# if defined(VMS)
3525# define PERLLIB_SEP '|'
3526# else
bf4acbe4
GS		 3527# if defined(MACOS_TRADITIONAL)
3528# define PERLLIB_SEP ','
3529# else
3530# define PERLLIB_SEP ':'
3531# endif
774d564b 3532# endif
3533#endif
3534#ifndef PERLLIB_MANGLE
3535# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3536#endif
774d564b 3537
76e3520e 3538STATIC void
9c8a64f0 3539S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3540{
3541 SV *subdir = Nullsv;
774d564b 3542
3b290362 3543 if (!p || !*p)
774d564b 3544 return;
3545
9c8a64f0 3546 if (addsubdirs || addoldvers) {
00db4c45 3547 subdir = sv_newmortal();
774d564b 3548 }
3549
3550 /* Break at all separators */
3551 while (p && *p) {
8c52afec 3552 SV *libdir = NEWSV(55,0);
774d564b 3553 char *s;
3554
3555 /* skip any consecutive separators */
3556 while ( *p == PERLLIB_SEP ) {
3557 /* Uncomment the next line for PATH semantics */
79cb57f6 3558 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3559 p++;
3560 }
3561
3562 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3563 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3564 (STRLEN)(s - p));
3565 p = s + 1;
3566 }
3567 else {
3568 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3569 p = Nullch; /* break out */
3570 }
bf4acbe4
GS		 3571#ifdef MACOS_TRADITIONAL
3572 if (!strchr(SvPVX(libdir), ':'))
3573 sv_insert(libdir, 0, 0, ":", 1);
3574 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3575 sv_catpv(libdir, ":");
3576#endif
774d564b 3577
3578 /*
3579 * BEFORE pushing libdir onto @INC we may first push version- and
3580 * archname-specific sub-directories.
3581 */
9c8a64f0 3582 if (addsubdirs || addoldvers) {
29d82f8d 3583#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3584 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3585 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3586 const char **incver;
3587#endif
774d564b 3588 struct stat tmpstatbuf;
aa689395 3589#ifdef VMS
3590 char *unix;
3591 STRLEN len;
774d564b 3592
2d8e6c8d 3593 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3594 len = strlen(unix);
3595 while (unix[len-1] == '/') len--; /* Cosmetic */
3596 sv_usepvn(libdir,unix,len);
3597 }
3598 else
bf49b057 3599 PerlIO_printf(Perl_error_log,
aa689395 3600 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3601 SvPV(libdir,len));
aa689395 3602#endif
9c8a64f0 3603 if (addsubdirs) {
bf4acbe4
GS		 3604#ifdef MACOS_TRADITIONAL
3605#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3606#define PERL_ARCH_FMT "%s:"
3607#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3608#else
3609#define PERL_AV_SUFFIX_FMT "/"
3610#define PERL_ARCH_FMT "/%s"
084592ab 3611#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3612#endif
9c8a64f0 3613 /* .../version/archname if -d .../version/archname */
084592ab 3614 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3615 libdir,
3616 (int)PERL_REVISION, (int)PERL_VERSION,
3617 (int)PERL_SUBVERSION, ARCHNAME);
3618 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3619 S_ISDIR(tmpstatbuf.st_mode))
3620 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3621
9c8a64f0 3622 /* .../version if -d .../version */
084592ab 3623 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3624 (int)PERL_REVISION, (int)PERL_VERSION,
3625 (int)PERL_SUBVERSION);
3626 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3627 S_ISDIR(tmpstatbuf.st_mode))
3628 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3629
3630 /* .../archname if -d .../archname */
bf4acbe4 3631 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3632 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3633 S_ISDIR(tmpstatbuf.st_mode))
3634 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3635 }
9c8a64f0 3636
9c8a64f0 3637#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3638 if (addoldvers) {
9c8a64f0
GS		 3639 for (incver = incverlist; *incver; incver++) {
3640 /* .../xxx if -d .../xxx */
bf4acbe4 3641 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3642 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3643 S_ISDIR(tmpstatbuf.st_mode))
3644 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3645 }
3646 }
29d82f8d 3647#endif
774d564b 3648 }
3649
3650 /* finally push this lib directory on the end of @INC */
3280af22 3651 av_push(GvAVn(PL_incgv), libdir);
774d564b 3652 }
34de22dd 3653}
93a17b20 3654
199100c8 3655#ifdef USE_THREADS
76e3520e 3656STATIC struct perl_thread *
cea2e8a9 3657S_init_main_thread(pTHX)
199100c8 3658{
c5be433b 3659#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3660 struct perl_thread *thr;
cea2e8a9 3661#endif
199100c8
MB		 3662 XPV *xpv;
3663
52e1cb5e 3664 Newz(53, thr, 1, struct perl_thread);
533c011a 3665 PL_curcop = &PL_compiling;
c5be433b 3666 thr->interp = PERL_GET_INTERP;
199100c8 3667 thr->cvcache = newHV();
54b9620d 3668 thr->threadsv = newAV();
940cb80d 3669 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3670 thr->specific = newAV();
3671 thr->flags = THRf_R_JOINABLE;
3672 MUTEX_INIT(&thr->mutex);
3673 /* Handcraft thrsv similarly to mess_sv */
533c011a 3674 New(53, PL_thrsv, 1, SV);
199100c8 3675 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3676 SvFLAGS(PL_thrsv) = SVt_PV;
3677 SvANY(PL_thrsv) = (void*)xpv;
3678 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3679 SvPVX(PL_thrsv) = (char*)thr;
3680 SvCUR_set(PL_thrsv, sizeof(thr));
3681 SvLEN_set(PL_thrsv, sizeof(thr));
3682 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3683 thr->oursv = PL_thrsv;
3684 PL_chopset = " \n-";
3967c732 3685 PL_dumpindent = 4;
533c011a
NIS		 3686
3687 MUTEX_LOCK(&PL_threads_mutex);
3688 PL_nthreads++;
199100c8
MB		 3689 thr->tid = 0;
3690 thr->next = thr;
3691 thr->prev = thr;
8dcd6f7b 3692 thr->thr_done = 0;
533c011a 3693 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3694
4b026b9e 3695#ifdef HAVE_THREAD_INTERN
4f63d024 3696 Perl_init_thread_intern(thr);
235db74f
GS		 3697#endif
3698
3699#ifdef SET_THREAD_SELF
3700 SET_THREAD_SELF(thr);
199100c8
MB		 3701#else
3702 thr->self = pthread_self();
235db74f 3703#endif /* SET_THREAD_SELF */
06d86050 3704 PERL_SET_THX(thr);
199100c8
MB		 3705
3706 /*
411caa50
JH		 3707 * These must come after the thread self setting
3708 * because sv_setpvn does SvTAINT and the taint
3709 * fields thread selfness being set.
199100c8 3710 */
533c011a
NIS		 3711 PL_toptarget = NEWSV(0,0);
3712 sv_upgrade(PL_toptarget, SVt_PVFM);
3713 sv_setpvn(PL_toptarget, "", 0);
3714 PL_bodytarget = NEWSV(0,0);
3715 sv_upgrade(PL_bodytarget, SVt_PVFM);
3716 sv_setpvn(PL_bodytarget, "", 0);
3717 PL_formtarget = PL_bodytarget;
79cb57f6 3718 thr->errsv = newSVpvn("", 0);
78857c3c 3719 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3720
533c011a 3721 PL_maxscream = -1;
0b94c7bb
GS		 3722 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3723 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3724 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3725 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3726 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3727 PL_regindent = 0;
3728 PL_reginterp_cnt = 0;
5c0ca799 3729
199100c8
MB		 3730 return thr;
3731}
3732#endif /* USE_THREADS */
3733
93a17b20 3734void
864dbfa3 3735Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3736{
971a9dd3 3737 SV *atsv;
57843af0 3738 line_t oldline = CopLINE(PL_curcop);
312caa8e 3739 CV *cv;
22921e25 3740 STRLEN len;
6224f72b 3741 int ret;
db36c5a1 3742 dJMPENV;
93a17b20 3743
76e3520e 3744 while (AvFILL(paramList) >= 0) {
312caa8e 3745 cv = (CV*)av_shift(paramList);
059a8bb7
JH		 3746 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3747 /* save PL_beginav for compiler */
3748 if (! PL_beginav_save)
3749 PL_beginav_save = newAV();
3750 av_push(PL_beginav_save, (SV*)cv);
3751 } else {
3752 SAVEFREESV(cv);
3753 }
14dd3ad8
GS		 3754#ifdef PERL_FLEXIBLE_EXCEPTIONS
3755 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3756#else
3757 JMPENV_PUSH(ret);
3758#endif
6224f72b 3759 switch (ret) {
312caa8e 3760 case 0:
14dd3ad8
GS		 3761#ifndef PERL_FLEXIBLE_EXCEPTIONS
3762 call_list_body(cv);
3763#endif
971a9dd3 3764 atsv = ERRSV;
312caa8e
CS		 3765 (void)SvPV(atsv, len);
3766 if (len) {
971a9dd3 3767 STRLEN n_a;
312caa8e 3768 PL_curcop = &PL_compiling;
57843af0 3769 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3770 if (paramList == PL_beginav)
3771 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3772 else
4f25aa18
GS		 3773 Perl_sv_catpvf(aTHX_ atsv,
3774 "%s failed--call queue aborted",
7d30b5c4 3775 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3776 : paramList == PL_initav ? "INIT"
3777 : "END");
312caa8e
CS		 3778 while (PL_scopestack_ix > oldscope)
3779 LEAVE;
14dd3ad8 3780 JMPENV_POP;
971a9dd3 3781 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3782 }
85e6fe83 3783 break;
6224f72b 3784 case 1:
f86702cc 3785 STATUS_ALL_FAILURE;
85e6fe83 3786 /* FALL THROUGH */
6224f72b 3787 case 2:
85e6fe83 3788 /* my_exit() was called */
3280af22 3789 while (PL_scopestack_ix > oldscope)
2ae324a7 3790 LEAVE;
84902520 3791 FREETMPS;
3280af22 3792 PL_curstash = PL_defstash;
3280af22 3793 PL_curcop = &PL_compiling;
57843af0 3794 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3795 JMPENV_POP;
cc3604b1 3796 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3797 if (paramList == PL_beginav)
cea2e8a9 3798 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3799 else
4f25aa18 3800 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3801 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3802 : paramList == PL_initav ? "INIT"
3803 : "END");
85e6fe83 3804 }
f86702cc 3805 my_exit_jump();
85e6fe83 3806 /* NOTREACHED */
6224f72b 3807 case 3:
312caa8e
CS		 3808 if (PL_restartop) {
3809 PL_curcop = &PL_compiling;
57843af0 3810 CopLINE_set(PL_curcop, oldline);
312caa8e 3811 JMPENV_JUMP(3);
85e6fe83 3812 }
bf49b057 3813 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3814 FREETMPS;
3815 break;
8990e307 3816 }
14dd3ad8 3817 JMPENV_POP;
93a17b20 3818 }
93a17b20 3819}
93a17b20 3820
14dd3ad8 3821#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3822STATIC void *
14dd3ad8 3823S_vcall_list_body(pTHX_ va_list args)
312caa8e 3824{
312caa8e 3825 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3826 return call_list_body(cv);
3827}
3828#endif
312caa8e 3829
14dd3ad8
GS		 3830STATIC void *
3831S_call_list_body(pTHX_ CV *cv)
3832{
312caa8e 3833 PUSHMARK(PL_stack_sp);
864dbfa3 3834 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3835 return NULL;
3836}
3837
f86702cc 3838void
864dbfa3 3839Perl_my_exit(pTHX_ U32 status)
f86702cc 3840{
8b73bbec 3841 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3842 thr, (unsigned long) status));
f86702cc 3843 switch (status) {
3844 case 0:
3845 STATUS_ALL_SUCCESS;
3846 break;
3847 case 1:
3848 STATUS_ALL_FAILURE;
3849 break;
3850 default:
3851 STATUS_NATIVE_SET(status);
3852 break;
3853 }
3854 my_exit_jump();
3855}
3856
3857void
864dbfa3 3858Perl_my_failure_exit(pTHX)
f86702cc 3859{
3860#ifdef VMS
3861 if (vaxc$errno & 1) {
4fdae800 3862 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3863 STATUS_NATIVE_SET(44);
f86702cc 3864 }
3865 else {
ff0cee69 3866 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3867 STATUS_NATIVE_SET(44);
f86702cc 3868 else
4fdae800 3869 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3870 }
3871#else
9b599b2a 3872 int exitstatus;
f86702cc 3873 if (errno & 255)
3874 STATUS_POSIX_SET(errno);
9b599b2a 3875 else {
ac27b0f5 3876 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3877 if (exitstatus & 255)
3878 STATUS_POSIX_SET(exitstatus);
3879 else
3880 STATUS_POSIX_SET(255);
3881 }
f86702cc 3882#endif
3883 my_exit_jump();
93a17b20
LW		 3884}
3885
76e3520e 3886STATIC void
cea2e8a9 3887S_my_exit_jump(pTHX)
f86702cc 3888{
c09156bb 3889 register PERL_CONTEXT *cx;
f86702cc 3890 I32 gimme;
3891 SV **newsp;
3892
3280af22
NIS		 3893 if (PL_e_script) {
3894 SvREFCNT_dec(PL_e_script);
3895 PL_e_script = Nullsv;
f86702cc 3896 }
3897
3280af22 3898 POPSTACK_TO(PL_mainstack);
f86702cc 3899 if (cxstack_ix >= 0) {
3900 if (cxstack_ix > 0)
3901 dounwind(0);
3280af22 3902 POPBLOCK(cx,PL_curpm);
f86702cc 3903 LEAVE;
3904 }
ff0cee69 3905
6224f72b 3906 JMPENV_JUMP(2);
f86702cc 3907}
873ef191 3908
7a5f8e82 3909#ifdef PERL_OBJECT
873ef191 3910#include "XSUB.h"
51371543 3911#endif
873ef191 3912
0cb96387
GS		 3913static I32
3914read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3915{
3916 char *p, *nl;
3280af22 3917 p = SvPVX(PL_e_script);
873ef191 3918 nl = strchr(p, '\n');
3280af22 3919 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3920 if (nl-p == 0) {
0cb96387 3921 filter_del(read_e_script);
873ef191 3922 return 0;
7dfe3f66 3923 }
873ef191 3924 sv_catpvn(buf_sv, p, nl-p);
3280af22 3925 sv_chop(PL_e_script, nl);
873ef191
GS		 3926 return 1;
3927}
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