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Major utf8 test reorganisation and rewrite.
[perl5.git] / perl.c
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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
GS		 255 s = (U8*)SvPVX(PL_patchlevel);
256 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS		 267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 275#endif
276
52853b95
GS		 277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS		 283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
8990e307 286
8990e307 287 ENTER;
79072805
LW		 288}
289
954c1994
GS		 290/*
291=for apidoc perl_destruct
292
293Shuts down a Perl interpreter. See L<perlembed>.
294
295=cut
296*/
297
79072805 298void
0cb96387 299perl_destruct(pTHXx)
79072805 300{
748a9306 301 int destruct_level; /* 0=none, 1=full, 2=full with checks */
8990e307 302 I32 last_sv_count;
a0d0e21e 303 HV *hv;
1f2bfc8a 304#ifdef USE_THREADS
33f46ff6 305 Thread t;
cea2e8a9 306 dTHX;
1f2bfc8a 307#endif /* USE_THREADS */
8990e307 308
7766f137
GS		 309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
311
11343788 312#ifdef USE_THREADS
0f15f207 313#ifndef FAKE_THREADS
8023c3ce
MB		 314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 retry_cleanup:
533c011a 316 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 317 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 318 "perl_destruct: waiting for %d threads...\n",
533c011a 319 PL_nthreads - 1));
33f46ff6 320 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
323 AV *av;
c7848ba1 324 case THRf_ZOMBIE:
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
533c011a 329 PL_nthreads--;
8023c3ce
MB		 330 /*
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
334 * all over again.
335 */
533c011a 336 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 337 JOIN(t, &av);
605e5515 338 SvREFCNT_dec((SV*)av);
bf49b057 339 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 340 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 341 goto retry_cleanup;
c7848ba1 342 case THRf_R_JOINABLE:
bf49b057 343 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 346 /*
c7848ba1
MB		 347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
351 */
533c011a 352 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 353 DETACH(t);
354 MUTEX_UNLOCK(&t->mutex);
8023c3ce 355 goto retry_cleanup;
c7848ba1 356 default:
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 358 "perl_destruct: ignoring %p (state %u)\n",
359 t, ThrSTATE(t)));
360 MUTEX_UNLOCK(&t->mutex);
c7848ba1 361 /* fall through and out */
33f46ff6
MB		 362 }
363 }
8023c3ce
MB		 364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 367 while (PL_nthreads > 1)
11343788 368 {
bf49b057 369 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 370 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 371 PL_nthreads - 1));
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 373 }
374 /* At this point, we're the last thread */
533c011a 375 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
b57a092c 379 PL_nthreads--;
0f15f207 380#endif /* !defined(FAKE_THREADS) */
11343788
MB		 381#endif /* USE_THREADS */
382
3280af22 383 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 384#ifdef DEBUGGING
385 {
386 char *s;
155aba94 387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 388 int i = atoi(s);
389 if (destruct_level < i)
390 destruct_level = i;
391 }
4633a7c4
LW		 392 }
393#endif
394
8990e307 395 LEAVE;
a0d0e21e
LW		 396 FREETMPS;
397
ff0cee69 398 /* We must account for everything. */
399
400 /* Destroy the main CV and syntax tree */
3280af22
NIS		 401 if (PL_main_root) {
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
a0d0e21e 405 }
3280af22
NIS		 406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
409 PL_main_cv = Nullcv;
24d3c518 410 PL_dirty = TRUE;
ff0cee69 411
3280af22 412 if (PL_sv_objcount) {
a0d0e21e
LW		 413 /*
414 * Try to destruct global references. We do this first so that the
415 * destructors and destructees still exist. Some sv's might remain.
416 * Non-referenced objects are on their own.
417 */
a0d0e21e 418 sv_clean_objs();
8990e307
LW		 419 }
420
5cd24f17 421 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 422 SvREFCNT_dec(PL_warnhook);
423 PL_warnhook = Nullsv;
424 SvREFCNT_dec(PL_diehook);
425 PL_diehook = Nullsv;
5cd24f17 426
4b556e6c 427 /* call exit list functions */
3280af22 428 while (PL_exitlistlen-- > 0)
0cb96387 429 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 430
3280af22 431 Safefree(PL_exitlist);
4b556e6c 432
a0d0e21e 433 if (destruct_level == 0){
8990e307 434
a0d0e21e 435 DEBUG_P(debprofdump());
ac27b0f5 436
a0d0e21e
LW		 437 /* The exit() function will do everything that needs doing. */
438 return;
439 }
5dd60ef7 440
551a8b83
JH		 441 /* jettison our possibly duplicated environment */
442
443#ifdef USE_ENVIRON_ARRAY
444 if (environ != PL_origenviron) {
445 I32 i;
446
447 for (i = 0; environ[i]; i++)
4b420006
JH		 448 safesysfree(environ[i]);
449 /* Must use safesysfree() when working with environ. */
450 safesysfree(environ);
551a8b83
JH		 451
452 environ = PL_origenviron;
453 }
454#endif
455
5f05dabc 456 /* loosen bonds of global variables */
457
3280af22
NIS		 458 if(PL_rsfp) {
459 (void)PerlIO_close(PL_rsfp);
460 PL_rsfp = Nullfp;
8ebc5c01 461 }
462
463 /* Filters for program text */
3280af22
NIS		 464 SvREFCNT_dec(PL_rsfp_filters);
465 PL_rsfp_filters = Nullav;
8ebc5c01 466
467 /* switches */
3280af22
NIS		 468 PL_preprocess = FALSE;
469 PL_minus_n = FALSE;
470 PL_minus_p = FALSE;
471 PL_minus_l = FALSE;
472 PL_minus_a = FALSE;
473 PL_minus_F = FALSE;
474 PL_doswitches = FALSE;
599cee73 475 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 476 PL_doextract = FALSE;
477 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 478 PL_unsafe = FALSE;
479
480 Safefree(PL_inplace);
481 PL_inplace = Nullch;
a7cb1f99 482 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 483
484 if (PL_e_script) {
485 SvREFCNT_dec(PL_e_script);
486 PL_e_script = Nullsv;
8ebc5c01 487 }
488
489 /* magical thingies */
490
7889fe52
NIS		 491 SvREFCNT_dec(PL_ofs_sv); /* $, */
492 PL_ofs_sv = Nullsv;
5f05dabc 493
7889fe52
NIS		 494 SvREFCNT_dec(PL_ors_sv); /* $\ */
495 PL_ors_sv = Nullsv;
8ebc5c01 496
3280af22
NIS		 497 SvREFCNT_dec(PL_rs); /* $/ */
498 PL_rs = Nullsv;
dc92893f 499
3280af22
NIS		 500 SvREFCNT_dec(PL_nrs); /* $/ helper */
501 PL_nrs = Nullsv;
5f05dabc 502
d33b2eba
GS		 503 PL_multiline = 0; /* $* */
504 Safefree(PL_osname); /* $^O */
505 PL_osname = Nullch;
5f05dabc 506
3280af22
NIS		 507 SvREFCNT_dec(PL_statname);
508 PL_statname = Nullsv;
509 PL_statgv = Nullgv;
5f05dabc 510
8ebc5c01 511 /* defgv, aka *_ should be taken care of elsewhere */
512
8ebc5c01 513 /* clean up after study() */
3280af22
NIS		 514 SvREFCNT_dec(PL_lastscream);
515 PL_lastscream = Nullsv;
516 Safefree(PL_screamfirst);
517 PL_screamfirst = 0;
518 Safefree(PL_screamnext);
519 PL_screamnext = 0;
8ebc5c01 520
7d5ea4e7
GS		 521 /* float buffer */
522 Safefree(PL_efloatbuf);
523 PL_efloatbuf = Nullch;
524 PL_efloatsize = 0;
525
8ebc5c01 526 /* startup and shutdown function lists */
3280af22
NIS		 527 SvREFCNT_dec(PL_beginav);
528 SvREFCNT_dec(PL_endav);
7d30b5c4 529 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 530 SvREFCNT_dec(PL_initav);
531 PL_beginav = Nullav;
532 PL_endav = Nullav;
7d30b5c4 533 PL_checkav = Nullav;
3280af22 534 PL_initav = Nullav;
5618dfe8 535
8ebc5c01 536 /* shortcuts just get cleared */
3280af22 537 PL_envgv = Nullgv;
3280af22
NIS		 538 PL_incgv = Nullgv;
539 PL_hintgv = Nullgv;
540 PL_errgv = Nullgv;
541 PL_argvgv = Nullgv;
542 PL_argvoutgv = Nullgv;
543 PL_stdingv = Nullgv;
bf49b057 544 PL_stderrgv = Nullgv;
3280af22
NIS		 545 PL_last_in_gv = Nullgv;
546 PL_replgv = Nullgv;
5c831c24 547 PL_debstash = Nullhv;
8ebc5c01 548
549 /* reset so print() ends up where we expect */
550 setdefout(Nullgv);
5c831c24 551
7a1c5554
GS		 552 SvREFCNT_dec(PL_argvout_stack);
553 PL_argvout_stack = Nullav;
8ebc5c01 554
5c831c24
GS		 555 SvREFCNT_dec(PL_modglobal);
556 PL_modglobal = Nullhv;
557 SvREFCNT_dec(PL_preambleav);
558 PL_preambleav = Nullav;
559 SvREFCNT_dec(PL_subname);
560 PL_subname = Nullsv;
561 SvREFCNT_dec(PL_linestr);
562 PL_linestr = Nullsv;
563 SvREFCNT_dec(PL_pidstatus);
564 PL_pidstatus = Nullhv;
565 SvREFCNT_dec(PL_toptarget);
566 PL_toptarget = Nullsv;
567 SvREFCNT_dec(PL_bodytarget);
568 PL_bodytarget = Nullsv;
569 PL_formtarget = Nullsv;
570
d33b2eba 571 /* free locale stuff */
b9582b6a 572#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 573 Safefree(PL_collation_name);
574 PL_collation_name = Nullch;
b9582b6a 575#endif
d33b2eba 576
b9582b6a 577#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 578 Safefree(PL_numeric_name);
579 PL_numeric_name = Nullch;
eff180cd 580 SvREFCNT_dec(PL_numeric_radix);
b9582b6a 581#endif
d33b2eba 582
5c831c24
GS		 583 /* clear utf8 character classes */
584 SvREFCNT_dec(PL_utf8_alnum);
585 SvREFCNT_dec(PL_utf8_alnumc);
586 SvREFCNT_dec(PL_utf8_ascii);
587 SvREFCNT_dec(PL_utf8_alpha);
588 SvREFCNT_dec(PL_utf8_space);
589 SvREFCNT_dec(PL_utf8_cntrl);
590 SvREFCNT_dec(PL_utf8_graph);
591 SvREFCNT_dec(PL_utf8_digit);
592 SvREFCNT_dec(PL_utf8_upper);
593 SvREFCNT_dec(PL_utf8_lower);
594 SvREFCNT_dec(PL_utf8_print);
595 SvREFCNT_dec(PL_utf8_punct);
596 SvREFCNT_dec(PL_utf8_xdigit);
597 SvREFCNT_dec(PL_utf8_mark);
598 SvREFCNT_dec(PL_utf8_toupper);
599 SvREFCNT_dec(PL_utf8_tolower);
600 PL_utf8_alnum = Nullsv;
601 PL_utf8_alnumc = Nullsv;
602 PL_utf8_ascii = Nullsv;
603 PL_utf8_alpha = Nullsv;
604 PL_utf8_space = Nullsv;
605 PL_utf8_cntrl = Nullsv;
606 PL_utf8_graph = Nullsv;
607 PL_utf8_digit = Nullsv;
608 PL_utf8_upper = Nullsv;
609 PL_utf8_lower = Nullsv;
610 PL_utf8_print = Nullsv;
611 PL_utf8_punct = Nullsv;
612 PL_utf8_xdigit = Nullsv;
613 PL_utf8_mark = Nullsv;
614 PL_utf8_toupper = Nullsv;
615 PL_utf8_totitle = Nullsv;
616 PL_utf8_tolower = Nullsv;
617
971a9dd3
GS		 618 if (!specialWARN(PL_compiling.cop_warnings))
619 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 620 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 621 if (!specialCopIO(PL_compiling.cop_io))
622 SvREFCNT_dec(PL_compiling.cop_io);
623 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 624#ifdef USE_ITHREADS
625 Safefree(CopFILE(&PL_compiling));
626 CopFILE(&PL_compiling) = Nullch;
627 Safefree(CopSTASHPV(&PL_compiling));
628#else
01724ea0 629 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 630 CopFILEGV(&PL_compiling) = Nullgv;
631 /* cop_stash is not refcounted */
01724ea0 632#endif
5c831c24 633
a0d0e21e 634 /* Prepare to destruct main symbol table. */
5f05dabc 635
3280af22
NIS		 636 hv = PL_defstash;
637 PL_defstash = 0;
a0d0e21e 638 SvREFCNT_dec(hv);
5c831c24
GS		 639 SvREFCNT_dec(PL_curstname);
640 PL_curstname = Nullsv;
a0d0e21e 641
5a844595
GS		 642 /* clear queued errors */
643 SvREFCNT_dec(PL_errors);
644 PL_errors = Nullsv;
645
a0d0e21e 646 FREETMPS;
0453d815 647 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 648 if (PL_scopestack_ix != 0)
0453d815
PM		 649 Perl_warner(aTHX_ WARN_INTERNAL,
650 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 651 (long)PL_scopestack_ix);
652 if (PL_savestack_ix != 0)
0453d815
PM		 653 Perl_warner(aTHX_ WARN_INTERNAL,
654 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 655 (long)PL_savestack_ix);
656 if (PL_tmps_floor != -1)
0453d815 657 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 658 (long)PL_tmps_floor + 1);
a0d0e21e 659 if (cxstack_ix != -1)
0453d815 660 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 661 (long)cxstack_ix + 1);
a0d0e21e 662 }
8990e307
LW		 663
664 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 665 last_sv_count = 0;
d33b2eba 666 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS		 667 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
668 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
669 last_sv_count = PL_sv_count;
8990e307
LW		 670 sv_clean_all();
671 }
d33b2eba
GS		 672 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
673 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 674 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
675 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 676
d4777f27
GS		 677 AvREAL_off(PL_fdpid); /* no surviving entries */
678 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 679 PL_fdpid = Nullav;
680
6c644e78
GS		 681#ifdef HAVE_INTERP_INTERN
682 sys_intern_clear();
683#endif
684
6e72f9df 685 /* Destruct the global string table. */
686 {
687 /* Yell and reset the HeVAL() slots that are still holding refcounts,
688 * so that sv_free() won't fail on them.
689 */
690 I32 riter;
691 I32 max;
692 HE *hent;
693 HE **array;
694
695 riter = 0;
3280af22
NIS		 696 max = HvMAX(PL_strtab);
697 array = HvARRAY(PL_strtab);
6e72f9df 698 hent = array[0];
699 for (;;) {
0453d815
PM		 700 if (hent && ckWARN_d(WARN_INTERNAL)) {
701 Perl_warner(aTHX_ WARN_INTERNAL,
702 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 703 HeVAL(hent) - Nullsv, HeKEY(hent));
704 HeVAL(hent) = Nullsv;
705 hent = HeNEXT(hent);
706 }
707 if (!hent) {
708 if (++riter > max)
709 break;
710 hent = array[riter];
711 }
712 }
713 }
3280af22 714 SvREFCNT_dec(PL_strtab);
6e72f9df 715
e652bb2f 716#ifdef USE_ITHREADS
a0739874
DM		 717 /* free the pointer table used for cloning */
718 ptr_table_free(PL_ptr_table);
53186e96 719#endif
a0739874 720
d33b2eba
GS		 721 /* free special SVs */
722
723 SvREFCNT(&PL_sv_yes) = 0;
724 sv_clear(&PL_sv_yes);
725 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 726 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 727
728 SvREFCNT(&PL_sv_no) = 0;
729 sv_clear(&PL_sv_no);
730 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 731 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 732
733 SvREFCNT(&PL_sv_undef) = 0;
734 SvREADONLY_off(&PL_sv_undef);
d33b2eba 735
0453d815
PM		 736 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
737 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 738
3280af22 739 Safefree(PL_origfilename);
3280af22 740 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 741 if (PL_reg_curpm)
742 Safefree(PL_reg_curpm);
82ba1be6 743 Safefree(PL_reg_poscache);
3280af22
NIS		 744 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
745 Safefree(PL_op_mask);
cf36064f
GS		 746 Safefree(PL_psig_ptr);
747 Safefree(PL_psig_name);
ce08f86c 748 Safefree(PL_psig_pend);
6e72f9df 749 nuke_stacks();
3280af22 750 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 751
a0d0e21e 752 DEBUG_P(debprofdump());
11343788 753#ifdef USE_THREADS
5f08fbcd 754 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 755 MUTEX_DESTROY(&PL_sv_mutex);
756 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 757 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 758 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 759 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 760#ifdef EMULATE_ATOMIC_REFCOUNTS
761 MUTEX_DESTROY(&PL_svref_mutex);
762#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 763
8023c3ce 764 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 765 Safefree(SvPVX(PL_thrsv));
766 Safefree(SvANY(PL_thrsv));
767 Safefree(PL_thrsv);
768 PL_thrsv = Nullsv;
8023c3ce 769#endif /* USE_THREADS */
d33b2eba 770
612f20c3
GS		 771 sv_free_arenas();
772
fc36a67e 773 /* As the absolutely last thing, free the non-arena SV for mess() */
774
3280af22 775 if (PL_mess_sv) {
9c63abab
GS		 776 /* it could have accumulated taint magic */
777 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
778 MAGIC* mg;
779 MAGIC* moremagic;
780 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
781 moremagic = mg->mg_moremagic;
782 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
783 Safefree(mg->mg_ptr);
784 Safefree(mg);
785 }
786 }
fc36a67e 787 /* we know that type >= SVt_PV */
155aba94 788 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 789 Safefree(SvPVX(PL_mess_sv));
790 Safefree(SvANY(PL_mess_sv));
791 Safefree(PL_mess_sv);
792 PL_mess_sv = Nullsv;
fc36a67e 793 }
79072805
LW		 794}
795
954c1994
GS		 796/*
797=for apidoc perl_free
798
799Releases a Perl interpreter. See L<perlembed>.
800
801=cut
802*/
803
79072805 804void
0cb96387 805perl_free(pTHXx)
79072805 806{
c5be433b 807#if defined(PERL_OBJECT)
7f0d82f7 808 PerlMem_free(this);
76e3520e 809#else
ce3e5b80
NIS		 810# if defined(WIN32)
811# if defined(PERL_IMPLICIT_SYS)
1c0ca838 812 void *host = w32_internal_host;
ba247512 813 if (PerlProc_lasthost()) {
ce08f86c 814 PerlIO_cleanup();
ba247512 815 }
7f0d82f7 816 PerlMem_free(aTHXx);
1c0ca838 817 win32_delete_internal_host(host);
ce3e5b80 818#else
ce08f86c 819 PerlIO_cleanup();
ce3e5b80
NIS		 820 PerlMem_free(aTHXx);
821#endif
1c0ca838
GS		 822# else
823 PerlMem_free(aTHXx);
824# endif
76e3520e 825#endif
79072805
LW		 826}
827
4b556e6c 828void
864dbfa3 829Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 830{
3280af22
NIS		 831 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
832 PL_exitlist[PL_exitlistlen].fn = fn;
833 PL_exitlist[PL_exitlistlen].ptr = ptr;
834 ++PL_exitlistlen;
4b556e6c
JD		 835}
836
954c1994
GS		 837/*
838=for apidoc perl_parse
839
840Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
841
842=cut
843*/
844
79072805 845int
0cb96387 846perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 847{
6224f72b 848 I32 oldscope;
6224f72b 849 int ret;
db36c5a1 850 dJMPENV;
cea2e8a9
GS		 851#ifdef USE_THREADS
852 dTHX;
853#endif
8d063cd8 854
a687059c
LW		 855#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
856#ifdef IAMSUID
857#undef IAMSUID
cea2e8a9 858 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 859setuid perl scripts securely.\n");
860#endif
861#endif
862
8f1f23e8 863#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 864 _dyld_lookup_and_bind
865 ("__environ", (unsigned long *) &environ_pointer, NULL);
866#endif /* environ */
867
3280af22
NIS		 868 PL_origargv = argv;
869 PL_origargc = argc;
fa6a1c44 870#ifdef USE_ENVIRON_ARRAY
3280af22 871 PL_origenviron = environ;
a0d0e21e
LW		 872#endif
873
3280af22 874 if (PL_do_undump) {
a0d0e21e
LW		 875
876 /* Come here if running an undumped a.out. */
877
3280af22
NIS		 878 PL_origfilename = savepv(argv[0]);
879 PL_do_undump = FALSE;
a0d0e21e 880 cxstack_ix = -1; /* start label stack again */
748a9306 881 init_ids();
a0d0e21e
LW		 882 init_postdump_symbols(argc,argv,env);
883 return 0;
884 }
885
3280af22
NIS		 886 if (PL_main_root) {
887 PL_curpad = AvARRAY(PL_comppad);
888 op_free(PL_main_root);
889 PL_main_root = Nullop;
ff0cee69 890 }
3280af22
NIS		 891 PL_main_start = Nullop;
892 SvREFCNT_dec(PL_main_cv);
893 PL_main_cv = Nullcv;
79072805 894
3280af22
NIS		 895 time(&PL_basetime);
896 oldscope = PL_scopestack_ix;
599cee73 897 PL_dowarn = G_WARN_OFF;
f86702cc 898
14dd3ad8
GS		 899#ifdef PERL_FLEXIBLE_EXCEPTIONS
900 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
901#else
902 JMPENV_PUSH(ret);
903#endif
6224f72b 904 switch (ret) {
312caa8e 905 case 0:
14dd3ad8
GS		 906#ifndef PERL_FLEXIBLE_EXCEPTIONS
907 parse_body(env,xsinit);
908#endif
7d30b5c4
GS		 909 if (PL_checkav)
910 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 911 ret = 0;
912 break;
6224f72b
GS		 913 case 1:
914 STATUS_ALL_FAILURE;
915 /* FALL THROUGH */
916 case 2:
917 /* my_exit() was called */
3280af22 918 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 919 LEAVE;
920 FREETMPS;
3280af22 921 PL_curstash = PL_defstash;
7d30b5c4
GS		 922 if (PL_checkav)
923 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 924 ret = STATUS_NATIVE_EXPORT;
925 break;
6224f72b 926 case 3:
bf49b057 927 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 928 ret = 1;
929 break;
6224f72b 930 }
14dd3ad8
GS		 931 JMPENV_POP;
932 return ret;
933}
934
935#ifdef PERL_FLEXIBLE_EXCEPTIONS
936STATIC void *
937S_vparse_body(pTHX_ va_list args)
938{
939 char **env = va_arg(args, char**);
940 XSINIT_t xsinit = va_arg(args, XSINIT_t);
941
942 return parse_body(env, xsinit);
312caa8e 943}
14dd3ad8 944#endif
312caa8e
CS		 945
946STATIC void *
14dd3ad8 947S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 948{
312caa8e
CS		 949 int argc = PL_origargc;
950 char **argv = PL_origargv;
312caa8e
CS		 951 char *scriptname = NULL;
952 int fdscript = -1;
953 VOL bool dosearch = FALSE;
954 char *validarg = "";
955 AV* comppadlist;
956 register SV *sv;
957 register char *s;
f4c556ac 958 char *cddir = Nullch;
312caa8e 959
3280af22 960 sv_setpvn(PL_linestr,"",0);
79cb57f6 961 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 962 SAVEFREESV(sv);
963 init_main_stash();
54310121 964
6224f72b
GS		 965 for (argc--,argv++; argc > 0; argc--,argv++) {
966 if (argv[0][0] != '-' || !argv[0][1])
967 break;
968#ifdef DOSUID
969 if (*validarg)
970 validarg = " PHOOEY ";
971 else
972 validarg = argv[0];
13281fa4 973#endif
6224f72b
GS		 974 s = argv[0]+1;
975 reswitch:
976 switch (*s) {
729a02f2
GS		 977 case 'C':
978#ifdef WIN32
c0932edc 979 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 980 /* FALL THROUGH */
981#endif
1d5472a9
GS		 982#ifndef PERL_STRICT_CR
983 case '\r':
984#endif
6224f72b
GS		 985 case ' ':
986 case '0':
987 case 'F':
988 case 'a':
989 case 'c':
990 case 'd':
991 case 'D':
992 case 'h':
993 case 'i':
994 case 'l':
995 case 'M':
996 case 'm':
997 case 'n':
998 case 'p':
999 case 's':
1000 case 'u':
1001 case 'U':
1002 case 'v':
599cee73
PM		 1003 case 'W':
1004 case 'X':
6224f72b 1005 case 'w':
155aba94 1006 if ((s = moreswitches(s)))
6224f72b
GS		 1007 goto reswitch;
1008 break;
33b78306 1009
6224f72b 1010 case 'T':
3280af22 1011 PL_tainting = TRUE;
6224f72b
GS		 1012 s++;
1013 goto reswitch;
f86702cc 1014
6224f72b 1015 case 'e':
bf4acbe4
GS		 1016#ifdef MACOS_TRADITIONAL
1017 /* ignore -e for Dev:Pseudo argument */
1018 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1019 break;
bf4acbe4 1020#endif
3280af22 1021 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1022 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1023 if (!PL_e_script) {
79cb57f6 1024 PL_e_script = newSVpvn("",0);
0cb96387 1025 filter_add(read_e_script, NULL);
6224f72b
GS		 1026 }
1027 if (*++s)
3280af22 1028 sv_catpv(PL_e_script, s);
6224f72b 1029 else if (argv[1]) {
3280af22 1030 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1031 argc--,argv++;
1032 }
1033 else
cea2e8a9 1034 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1035 sv_catpv(PL_e_script, "\n");
6224f72b 1036 break;
afe37c7d 1037
6224f72b
GS		 1038 case 'I': /* -I handled both here and in moreswitches() */
1039 forbid_setid("-I");
1040 if (!*++s && (s=argv[1]) != Nullch) {
1041 argc--,argv++;
1042 }
6224f72b 1043 if (s && *s) {
0df16ed7
GS		 1044 char *p;
1045 STRLEN len = strlen(s);
1046 p = savepvn(s, len);
9c8a64f0 1047 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1048 sv_catpvn(sv, "-I", 2);
1049 sv_catpvn(sv, p, len);
1050 sv_catpvn(sv, " ", 1);
6224f72b 1051 Safefree(p);
0df16ed7
GS		 1052 }
1053 else
a67e862a 1054 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1055 break;
1056 case 'P':
1057 forbid_setid("-P");
3280af22 1058 PL_preprocess = TRUE;
6224f72b
GS		 1059 s++;
1060 goto reswitch;
1061 case 'S':
1062 forbid_setid("-S");
1063 dosearch = TRUE;
1064 s++;
1065 goto reswitch;
1066 case 'V':
3280af22
NIS		 1067 if (!PL_preambleav)
1068 PL_preambleav = newAV();
1069 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1070 if (*++s != ':') {
3280af22 1071 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1072#ifdef VMS
6b88bc9c 1073 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1074#else
3280af22 1075 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1076#endif
3280af22 1077 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1078# ifdef DEBUGGING
3280af22 1079 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1080# endif
6224f72b 1081# ifdef MULTIPLICITY
8f872242 1082 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1083# endif
b363f7ed
GS		 1084# ifdef USE_THREADS
1085 sv_catpv(PL_Sv," USE_THREADS");
1086# endif
ac5e8965
JH		 1087# ifdef USE_ITHREADS
1088 sv_catpv(PL_Sv," USE_ITHREADS");
1089# endif
10cc9d2a
JH		 1090# ifdef USE_64_BIT_INT
1091 sv_catpv(PL_Sv," USE_64_BIT_INT");
1092# endif
1093# ifdef USE_64_BIT_ALL
1094 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1095# endif
1096# ifdef USE_LONG_DOUBLE
1097 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1098# endif
53430762
JH		 1099# ifdef USE_LARGE_FILES
1100 sv_catpv(PL_Sv," USE_LARGE_FILES");
1101# endif
ac5e8965
JH		 1102# ifdef USE_SOCKS
1103 sv_catpv(PL_Sv," USE_SOCKS");
1104# endif
b363f7ed
GS		 1105# ifdef PERL_OBJECT
1106 sv_catpv(PL_Sv," PERL_OBJECT");
1107# endif
1108# ifdef PERL_IMPLICIT_CONTEXT
1109 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1110# endif
1111# ifdef PERL_IMPLICIT_SYS
1112 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1113# endif
3280af22 1114 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1115
6224f72b
GS		 1116#if defined(LOCAL_PATCH_COUNT)
1117 if (LOCAL_PATCH_COUNT > 0) {
1118 int i;
3280af22 1119 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1120 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1121 if (PL_localpatches[i])
cea2e8a9 1122 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1123 }
1124 }
1125#endif
cea2e8a9 1126 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1127#ifdef __DATE__
1128# ifdef __TIME__
cea2e8a9 1129 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1130# else
cea2e8a9 1131 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1132# endif
1133#endif
3280af22 1134 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1135$\"=\"\\n \"; \
1136@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1137print \" \\%ENV:\\n @env\\n\" if @env; \
1138print \" \\@INC:\\n @INC\\n\";");
1139 }
1140 else {
3280af22
NIS		 1141 PL_Sv = newSVpv("config_vars(qw(",0);
1142 sv_catpv(PL_Sv, ++s);
1143 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1144 s += strlen(s);
1145 }
3280af22 1146 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1147 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1148 goto reswitch;
1149 case 'x':
3280af22 1150 PL_doextract = TRUE;
6224f72b
GS		 1151 s++;
1152 if (*s)
f4c556ac 1153 cddir = s;
6224f72b
GS		 1154 break;
1155 case 0:
1156 break;
1157 case '-':
1158 if (!*++s || isSPACE(*s)) {
1159 argc--,argv++;
1160 goto switch_end;
1161 }
1162 /* catch use of gnu style long options */
1163 if (strEQ(s, "version")) {
1164 s = "v";
1165 goto reswitch;
1166 }
1167 if (strEQ(s, "help")) {
1168 s = "h";
1169 goto reswitch;
1170 }
1171 s--;
1172 /* FALL THROUGH */
1173 default:
cea2e8a9 1174 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1175 }
1176 }
6224f72b 1177 switch_end:
54310121 1178
f675dbe5
CB		 1179 if (
1180#ifndef SECURE_INTERNAL_GETENV
1181 !PL_tainting &&
1182#endif
0df16ed7
GS		 1183 (s = PerlEnv_getenv("PERL5OPT")))
1184 {
74288ac8
GS		 1185 while (isSPACE(*s))
1186 s++;
1187 if (*s == '-' && *(s+1) == 'T')
1188 PL_tainting = TRUE;
1189 else {
1190 while (s && *s) {
4ea8f8fb 1191 char *d;
74288ac8
GS		 1192 while (isSPACE(*s))
1193 s++;
1194 if (*s == '-') {
1195 s++;
1196 if (isSPACE(*s))
1197 continue;
1198 }
4ea8f8fb 1199 d = s;
74288ac8
GS		 1200 if (!*s)
1201 break;
1202 if (!strchr("DIMUdmw", *s))
cea2e8a9 1203 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1204 while (++s && *s) {
1205 if (isSPACE(*s)) {
1206 *s++ = '\0';
1207 break;
1208 }
1209 }
1210 moreswitches(d);
6224f72b 1211 }
6224f72b
GS		 1212 }
1213 }
a0d0e21e 1214
6224f72b
GS		 1215 if (!scriptname)
1216 scriptname = argv[0];
3280af22 1217 if (PL_e_script) {
6224f72b
GS		 1218 argc++,argv--;
1219 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1220 }
1221 else if (scriptname == Nullch) {
1222#ifdef MSDOS
1223 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1224 moreswitches("h");
1225#endif
1226 scriptname = "-";
1227 }
1228
1229 init_perllib();
1230
1231 open_script(scriptname,dosearch,sv,&fdscript);
1232
1233 validate_suid(validarg, scriptname,fdscript);
1234
64ca3a65 1235#ifndef PERL_MICRO
0b5b802d
GS		 1236#if defined(SIGCHLD) || defined(SIGCLD)
1237 {
1238#ifndef SIGCHLD
1239# define SIGCHLD SIGCLD
1240#endif
1241 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1242 if (sigstate == SIG_IGN) {
1243 if (ckWARN(WARN_SIGNAL))
1244 Perl_warner(aTHX_ WARN_SIGNAL,
1245 "Can't ignore signal CHLD, forcing to default");
1246 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1247 }
1248 }
1249#endif
64ca3a65 1250#endif
0b5b802d 1251
bf4acbe4
GS		 1252#ifdef MACOS_TRADITIONAL
1253 if (PL_doextract || gMacPerl_AlwaysExtract) {
1254#else
f4c556ac 1255 if (PL_doextract) {
bf4acbe4 1256#endif
6224f72b 1257 find_beginning();
f4c556ac
GS		 1258 if (cddir && PerlDir_chdir(cddir) < 0)
1259 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1260
1261 }
6224f72b 1262
3280af22
NIS		 1263 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1264 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1265 CvUNIQUE_on(PL_compcv);
1266
1267 PL_comppad = newAV();
1268 av_push(PL_comppad, Nullsv);
1269 PL_curpad = AvARRAY(PL_comppad);
1270 PL_comppad_name = newAV();
1271 PL_comppad_name_fill = 0;
1272 PL_min_intro_pending = 0;
1273 PL_padix = 0;
6224f72b 1274#ifdef USE_THREADS
79cb57f6 1275 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1276 PL_curpad[0] = (SV*)newAV();
1277 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1278 CvOWNER(PL_compcv) = 0;
1279 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1280 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1281#endif /* USE_THREADS */
1282
1283 comppadlist = newAV();
1284 AvREAL_off(comppadlist);
3280af22
NIS		 1285 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1286 av_store(comppadlist, 1, (SV*)PL_comppad);
1287 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1288
1289 boot_core_UNIVERSAL();
9a34ef1d 1290#ifndef PERL_MICRO
09bef843 1291 boot_core_xsutils();
9a34ef1d 1292#endif
6224f72b
GS		 1293
1294 if (xsinit)
0cb96387 1295 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1296#ifndef PERL_MICRO
ed79a026 1297#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1298 init_os_extras();
6224f72b 1299#endif
64ca3a65 1300#endif
6224f72b 1301
29209bc5 1302#ifdef USE_SOCKS
1b9c9cf5
DH		 1303# ifdef HAS_SOCKS5_INIT
1304 socks5_init(argv[0]);
1305# else
29209bc5 1306 SOCKSinit(argv[0]);
1b9c9cf5 1307# endif
ac27b0f5 1308#endif
29209bc5 1309
6224f72b
GS		 1310 init_predump_symbols();
1311 /* init_postdump_symbols not currently designed to be called */
1312 /* more than once (ENV isn't cleared first, for example) */
1313 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1314 if (!PL_do_undump)
6224f72b
GS		 1315 init_postdump_symbols(argc,argv,env);
1316
1317 init_lexer();
1318
1319 /* now parse the script */
1320
1321 SETERRNO(0,SS$_NORMAL);
3280af22 1322 PL_error_count = 0;
bf4acbe4
GS		 1323#ifdef MACOS_TRADITIONAL
1324 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1325 if (PL_minus_c)
1326 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1327 else {
1328 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1329 MacPerl_MPWFileName(PL_origfilename));
1330 }
1331 }
1332#else
3280af22
NIS		 1333 if (yyparse() || PL_error_count) {
1334 if (PL_minus_c)
cea2e8a9 1335 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1336 else {
cea2e8a9 1337 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1338 PL_origfilename);
6224f72b
GS		 1339 }
1340 }
bf4acbe4 1341#endif
57843af0 1342 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1343 PL_curstash = PL_defstash;
1344 PL_preprocess = FALSE;
1345 if (PL_e_script) {
1346 SvREFCNT_dec(PL_e_script);
1347 PL_e_script = Nullsv;
6224f72b
GS		 1348 }
1349
1350 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1351 SvREFCNT_dec(PL_rs);
1352 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1353 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1354 if (PL_do_undump)
6224f72b
GS		 1355 my_unexec();
1356
57843af0
GS		 1357 if (isWARN_ONCE) {
1358 SAVECOPFILE(PL_curcop);
1359 SAVECOPLINE(PL_curcop);
3280af22 1360 gv_check(PL_defstash);
57843af0 1361 }
6224f72b
GS		 1362
1363 LEAVE;
1364 FREETMPS;
1365
1366#ifdef MYMALLOC
1367 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1368 dump_mstats("after compilation:");
1369#endif
1370
1371 ENTER;
3280af22 1372 PL_restartop = 0;
312caa8e 1373 return NULL;
6224f72b
GS		 1374}
1375
954c1994
GS		 1376/*
1377=for apidoc perl_run
1378
1379Tells a Perl interpreter to run. See L<perlembed>.
1380
1381=cut
1382*/
1383
6224f72b 1384int
0cb96387 1385perl_run(pTHXx)
6224f72b 1386{
6224f72b 1387 I32 oldscope;
14dd3ad8 1388 int ret = 0;
db36c5a1 1389 dJMPENV;
cea2e8a9
GS		 1390#ifdef USE_THREADS
1391 dTHX;
1392#endif
6224f72b 1393
3280af22 1394 oldscope = PL_scopestack_ix;
6224f72b 1395
14dd3ad8 1396#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1397 redo_body:
14dd3ad8
GS		 1398 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1399#else
1400 JMPENV_PUSH(ret);
1401#endif
6224f72b
GS		 1402 switch (ret) {
1403 case 1:
1404 cxstack_ix = -1; /* start context stack again */
312caa8e 1405 goto redo_body;
14dd3ad8
GS		 1406 case 0: /* normal completion */
1407#ifndef PERL_FLEXIBLE_EXCEPTIONS
1408 redo_body:
1409 run_body(oldscope);
1410#endif
1411 /* FALL THROUGH */
1412 case 2: /* my_exit() */
3280af22 1413 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1414 LEAVE;
1415 FREETMPS;
3280af22 1416 PL_curstash = PL_defstash;
865be832 1417 if (PL_endav && !PL_minus_c)
3280af22 1418 call_list(oldscope, PL_endav);
6224f72b
GS		 1419#ifdef MYMALLOC
1420 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1421 dump_mstats("after execution: ");
1422#endif
14dd3ad8
GS		 1423 ret = STATUS_NATIVE_EXPORT;
1424 break;
6224f72b 1425 case 3:
312caa8e
CS		 1426 if (PL_restartop) {
1427 POPSTACK_TO(PL_mainstack);
1428 goto redo_body;
6224f72b 1429 }
bf49b057 1430 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1431 FREETMPS;
14dd3ad8
GS		 1432 ret = 1;
1433 break;
6224f72b
GS		 1434 }
1435
14dd3ad8
GS		 1436 JMPENV_POP;
1437 return ret;
312caa8e
CS		 1438}
1439
14dd3ad8 1440#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1441STATIC void *
14dd3ad8 1442S_vrun_body(pTHX_ va_list args)
312caa8e 1443{
312caa8e
CS		 1444 I32 oldscope = va_arg(args, I32);
1445
14dd3ad8
GS		 1446 return run_body(oldscope);
1447}
1448#endif
1449
1450
1451STATIC void *
1452S_run_body(pTHX_ I32 oldscope)
1453{
6224f72b 1454 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1455 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1456
3280af22 1457 if (!PL_restartop) {
6224f72b
GS		 1458 DEBUG_x(dump_all());
1459 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1460 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1461 PTR2UV(thr)));
6224f72b 1462
3280af22 1463 if (PL_minus_c) {
bf4acbe4
GS		 1464#ifdef MACOS_TRADITIONAL
1465 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1466#else
bf49b057 1467 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1468#endif
6224f72b
GS		 1469 my_exit(0);
1470 }
3280af22 1471 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1472 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1473 if (PL_initav)
1474 call_list(oldscope, PL_initav);
6224f72b
GS		 1475 }
1476
1477 /* do it */
1478
3280af22 1479 if (PL_restartop) {
533c011a 1480 PL_op = PL_restartop;
3280af22 1481 PL_restartop = 0;
cea2e8a9 1482 CALLRUNOPS(aTHX);
6224f72b 1483 }
3280af22
NIS		 1484 else if (PL_main_start) {
1485 CvDEPTH(PL_main_cv) = 1;
533c011a 1486 PL_op = PL_main_start;
cea2e8a9 1487 CALLRUNOPS(aTHX);
6224f72b
GS		 1488 }
1489
f6b3007c
JH		 1490 my_exit(0);
1491 /* NOTREACHED */
312caa8e 1492 return NULL;
6224f72b
GS		 1493}
1494
954c1994
GS		 1495/*
1496=for apidoc p||get_sv
1497
1498Returns the SV of the specified Perl scalar. If C<create> is set and the
1499Perl variable does not exist then it will be created. If C<create> is not
1500set and the variable does not exist then NULL is returned.
1501
1502=cut
1503*/
1504
6224f72b 1505SV*
864dbfa3 1506Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1507{
1508 GV *gv;
1509#ifdef USE_THREADS
1510 if (name[1] == '\0' && !isALPHA(name[0])) {
1511 PADOFFSET tmp = find_threadsv(name);
411caa50 1512 if (tmp != NOT_IN_PAD)
6224f72b 1513 return THREADSV(tmp);
6224f72b
GS		 1514 }
1515#endif /* USE_THREADS */
1516 gv = gv_fetchpv(name, create, SVt_PV);
1517 if (gv)
1518 return GvSV(gv);
1519 return Nullsv;
1520}
1521
954c1994
GS		 1522/*
1523=for apidoc p||get_av
1524
1525Returns the AV of the specified Perl array. If C<create> is set and the
1526Perl variable does not exist then it will be created. If C<create> is not
1527set and the variable does not exist then NULL is returned.
1528
1529=cut
1530*/
1531
6224f72b 1532AV*
864dbfa3 1533Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1534{
1535 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1536 if (create)
1537 return GvAVn(gv);
1538 if (gv)
1539 return GvAV(gv);
1540 return Nullav;
1541}
1542
954c1994
GS		 1543/*
1544=for apidoc p||get_hv
1545
1546Returns the HV of the specified Perl hash. If C<create> is set and the
1547Perl variable does not exist then it will be created. If C<create> is not
1548set and the variable does not exist then NULL is returned.
1549
1550=cut
1551*/
1552
6224f72b 1553HV*
864dbfa3 1554Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1555{
a0d0e21e
LW		 1556 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1557 if (create)
1558 return GvHVn(gv);
1559 if (gv)
1560 return GvHV(gv);
1561 return Nullhv;
1562}
1563
954c1994
GS		 1564/*
1565=for apidoc p||get_cv
1566
1567Returns the CV of the specified Perl subroutine. If C<create> is set and
1568the Perl subroutine does not exist then it will be declared (which has the
1569same effect as saying C<sub name;>). If C<create> is not set and the
1570subroutine does not exist then NULL is returned.
1571
1572=cut
1573*/
1574
a0d0e21e 1575CV*
864dbfa3 1576Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1577{
1578 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1579 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1580 /* XXX this is probably not what they think they're getting.
1581 * It has the same effect as "sub name;", i.e. just a forward
1582 * declaration! */
8ebc5c01 1583 if (create && !GvCVu(gv))
774d564b 1584 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1585 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1586 Nullop,
a0d0e21e
LW		 1587 Nullop);
1588 if (gv)
8ebc5c01 1589 return GvCVu(gv);
a0d0e21e
LW		 1590 return Nullcv;
1591}
1592
79072805
LW		 1593/* Be sure to refetch the stack pointer after calling these routines. */
1594
954c1994
GS		 1595/*
1596=for apidoc p||call_argv
1597
1598Performs a callback to the specified Perl sub. See L<perlcall>.
1599
1600=cut
1601*/
1602
a0d0e21e 1603I32
864dbfa3 1604Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1605
8ac85365
NIS		 1606 /* See G_* flags in cop.h */
1607 /* null terminated arg list */
8990e307 1608{
a0d0e21e 1609 dSP;
8990e307 1610
924508f0 1611 PUSHMARK(SP);
a0d0e21e 1612 if (argv) {
8990e307 1613 while (*argv) {
a0d0e21e 1614 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1615 argv++;
1616 }
a0d0e21e 1617 PUTBACK;
8990e307 1618 }
864dbfa3 1619 return call_pv(sub_name, flags);
8990e307
LW		 1620}
1621
954c1994
GS		 1622/*
1623=for apidoc p||call_pv
1624
1625Performs a callback to the specified Perl sub. See L<perlcall>.
1626
1627=cut
1628*/
1629
a0d0e21e 1630I32
864dbfa3 1631Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1632 /* name of the subroutine */
1633 /* See G_* flags in cop.h */
a0d0e21e 1634{
864dbfa3 1635 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1636}
1637
954c1994
GS		 1638/*
1639=for apidoc p||call_method
1640
1641Performs a callback to the specified Perl method. The blessed object must
1642be on the stack. See L<perlcall>.
1643
1644=cut
1645*/
1646
a0d0e21e 1647I32
864dbfa3 1648Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1649 /* name of the subroutine */
1650 /* See G_* flags in cop.h */
a0d0e21e 1651{
968b3946 1652 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1653}
1654
1655/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1656/*
1657=for apidoc p||call_sv
1658
1659Performs a callback to the Perl sub whose name is in the SV. See
1660L<perlcall>.
1661
1662=cut
1663*/
1664
a0d0e21e 1665I32
864dbfa3 1666Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1667 /* See G_* flags in cop.h */
a0d0e21e 1668{
924508f0 1669 dSP;
a0d0e21e 1670 LOGOP myop; /* fake syntax tree node */
968b3946 1671 UNOP method_op;
aa689395 1672 I32 oldmark;
a0d0e21e 1673 I32 retval;
a0d0e21e 1674 I32 oldscope;
54310121 1675 bool oldcatch = CATCH_GET;
6224f72b 1676 int ret;
533c011a 1677 OP* oldop = PL_op;
db36c5a1 1678 dJMPENV;
1e422769 1679
a0d0e21e
LW		 1680 if (flags & G_DISCARD) {
1681 ENTER;
1682 SAVETMPS;
1683 }
1684
aa689395 1685 Zero(&myop, 1, LOGOP);
54310121 1686 myop.op_next = Nullop;
f51d4af5 1687 if (!(flags & G_NOARGS))
aa689395 1688 myop.op_flags |= OPf_STACKED;
54310121 1689 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1690 (flags & G_ARRAY) ? OPf_WANT_LIST :
1691 OPf_WANT_SCALAR);
462e5cf6 1692 SAVEOP();
533c011a 1693 PL_op = (OP*)&myop;
aa689395 1694
3280af22
NIS		 1695 EXTEND(PL_stack_sp, 1);
1696 *++PL_stack_sp = sv;
aa689395 1697 oldmark = TOPMARK;
3280af22 1698 oldscope = PL_scopestack_ix;
a0d0e21e 1699
3280af22 1700 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1701 /* Handle first BEGIN of -d. */
3280af22 1702 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1703 /* Try harder, since this may have been a sighandler, thus
1704 * curstash may be meaningless. */
3280af22 1705 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1706 && !(flags & G_NODEBUG))
533c011a 1707 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1708
968b3946
GS		 1709 if (flags & G_METHOD) {
1710 Zero(&method_op, 1, UNOP);
1711 method_op.op_next = PL_op;
1712 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1713 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1714 PL_op = (OP*)&method_op;
968b3946
GS		 1715 }
1716
312caa8e 1717 if (!(flags & G_EVAL)) {
0cdb2077 1718 CATCH_SET(TRUE);
14dd3ad8 1719 call_body((OP*)&myop, FALSE);
312caa8e 1720 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1721 CATCH_SET(oldcatch);
312caa8e
CS		 1722 }
1723 else {
d78bda3d 1724 myop.op_other = (OP*)&myop;
3280af22 1725 PL_markstack_ptr--;
4633a7c4
LW		 1726 /* we're trying to emulate pp_entertry() here */
1727 {
c09156bb 1728 register PERL_CONTEXT *cx;
54310121 1729 I32 gimme = GIMME_V;
ac27b0f5 1730
4633a7c4
LW		 1731 ENTER;
1732 SAVETMPS;
ac27b0f5 1733
968b3946 1734 push_return(Nullop);
1d76a5c3 1735 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1736 PUSHEVAL(cx, 0, 0);
533c011a 1737 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1738
faef0170 1739 PL_in_eval = EVAL_INEVAL;
4633a7c4 1740 if (flags & G_KEEPERR)
faef0170 1741 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1742 else
38a03e6e 1743 sv_setpv(ERRSV,"");
4633a7c4 1744 }
3280af22 1745 PL_markstack_ptr++;
a0d0e21e 1746
14dd3ad8
GS		 1747#ifdef PERL_FLEXIBLE_EXCEPTIONS
1748 redo_body:
1749 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1750 (OP*)&myop, FALSE);
14dd3ad8
GS		 1751#else
1752 JMPENV_PUSH(ret);
1753#endif
6224f72b
GS		 1754 switch (ret) {
1755 case 0:
14dd3ad8
GS		 1756#ifndef PERL_FLEXIBLE_EXCEPTIONS
1757 redo_body:
1758 call_body((OP*)&myop, FALSE);
1759#endif
312caa8e
CS		 1760 retval = PL_stack_sp - (PL_stack_base + oldmark);
1761 if (!(flags & G_KEEPERR))
1762 sv_setpv(ERRSV,"");
a0d0e21e 1763 break;
6224f72b 1764 case 1:
f86702cc 1765 STATUS_ALL_FAILURE;
a0d0e21e 1766 /* FALL THROUGH */
6224f72b 1767 case 2:
a0d0e21e 1768 /* my_exit() was called */
3280af22 1769 PL_curstash = PL_defstash;
a0d0e21e 1770 FREETMPS;
14dd3ad8 1771 JMPENV_POP;
cc3604b1 1772 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1773 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1774 my_exit_jump();
a0d0e21e 1775 /* NOTREACHED */
6224f72b 1776 case 3:
3280af22 1777 if (PL_restartop) {
533c011a 1778 PL_op = PL_restartop;
3280af22 1779 PL_restartop = 0;
312caa8e 1780 goto redo_body;
a0d0e21e 1781 }
3280af22 1782 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1783 if (flags & G_ARRAY)
1784 retval = 0;
1785 else {
1786 retval = 1;
3280af22 1787 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1788 }
312caa8e 1789 break;
a0d0e21e 1790 }
a0d0e21e 1791
3280af22 1792 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1793 SV **newsp;
1794 PMOP *newpm;
1795 I32 gimme;
c09156bb 1796 register PERL_CONTEXT *cx;
a0a2876f
LW		 1797 I32 optype;
1798
1799 POPBLOCK(cx,newpm);
1800 POPEVAL(cx);
1801 pop_return();
3280af22 1802 PL_curpm = newpm;
a0a2876f 1803 LEAVE;
a0d0e21e 1804 }
14dd3ad8 1805 JMPENV_POP;
a0d0e21e 1806 }
1e422769 1807
a0d0e21e 1808 if (flags & G_DISCARD) {
3280af22 1809 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1810 retval = 0;
1811 FREETMPS;
1812 LEAVE;
1813 }
533c011a 1814 PL_op = oldop;
a0d0e21e
LW		 1815 return retval;
1816}
1817
14dd3ad8 1818#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1819STATIC void *
14dd3ad8 1820S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1821{
1822 OP *myop = va_arg(args, OP*);
1823 int is_eval = va_arg(args, int);
1824
14dd3ad8 1825 call_body(myop, is_eval);
312caa8e
CS		 1826 return NULL;
1827}
14dd3ad8 1828#endif
312caa8e
CS		 1829
1830STATIC void
14dd3ad8 1831S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1832{
312caa8e
CS		 1833 if (PL_op == myop) {
1834 if (is_eval)
f807eda9 1835 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1836 else
f807eda9 1837 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1838 }
1839 if (PL_op)
cea2e8a9 1840 CALLRUNOPS(aTHX);
312caa8e
CS		 1841}
1842
6e72f9df 1843/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1844
954c1994
GS		 1845/*
1846=for apidoc p||eval_sv
1847
1848Tells Perl to C<eval> the string in the SV.
1849
1850=cut
1851*/
1852
a0d0e21e 1853I32
864dbfa3 1854Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1855
8ac85365 1856 /* See G_* flags in cop.h */
a0d0e21e 1857{
924508f0 1858 dSP;
a0d0e21e 1859 UNOP myop; /* fake syntax tree node */
3280af22 1860 I32 oldmark = SP - PL_stack_base;
4633a7c4 1861 I32 retval;
4633a7c4 1862 I32 oldscope;
6224f72b 1863 int ret;
533c011a 1864 OP* oldop = PL_op;
db36c5a1 1865 dJMPENV;
84902520 1866
4633a7c4
LW		 1867 if (flags & G_DISCARD) {
1868 ENTER;
1869 SAVETMPS;
1870 }
1871
462e5cf6 1872 SAVEOP();
533c011a
NIS		 1873 PL_op = (OP*)&myop;
1874 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1875 EXTEND(PL_stack_sp, 1);
1876 *++PL_stack_sp = sv;
1877 oldscope = PL_scopestack_ix;
79072805 1878
4633a7c4
LW		 1879 if (!(flags & G_NOARGS))
1880 myop.op_flags = OPf_STACKED;
79072805 1881 myop.op_next = Nullop;
6e72f9df 1882 myop.op_type = OP_ENTEREVAL;
54310121 1883 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1884 (flags & G_ARRAY) ? OPf_WANT_LIST :
1885 OPf_WANT_SCALAR);
6e72f9df 1886 if (flags & G_KEEPERR)
1887 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1888
14dd3ad8 1889#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1890 redo_body:
14dd3ad8 1891 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1892 (OP*)&myop, TRUE);
14dd3ad8
GS		 1893#else
1894 JMPENV_PUSH(ret);
1895#endif
6224f72b
GS		 1896 switch (ret) {
1897 case 0:
14dd3ad8
GS		 1898#ifndef PERL_FLEXIBLE_EXCEPTIONS
1899 redo_body:
1900 call_body((OP*)&myop,TRUE);
1901#endif
312caa8e
CS		 1902 retval = PL_stack_sp - (PL_stack_base + oldmark);
1903 if (!(flags & G_KEEPERR))
1904 sv_setpv(ERRSV,"");
4633a7c4 1905 break;
6224f72b 1906 case 1:
f86702cc 1907 STATUS_ALL_FAILURE;
4633a7c4 1908 /* FALL THROUGH */
6224f72b 1909 case 2:
4633a7c4 1910 /* my_exit() was called */
3280af22 1911 PL_curstash = PL_defstash;
4633a7c4 1912 FREETMPS;
14dd3ad8 1913 JMPENV_POP;
cc3604b1 1914 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1915 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1916 my_exit_jump();
4633a7c4 1917 /* NOTREACHED */
6224f72b 1918 case 3:
3280af22 1919 if (PL_restartop) {
533c011a 1920 PL_op = PL_restartop;
3280af22 1921 PL_restartop = 0;
312caa8e 1922 goto redo_body;
4633a7c4 1923 }
3280af22 1924 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1925 if (flags & G_ARRAY)
1926 retval = 0;
1927 else {
1928 retval = 1;
3280af22 1929 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1930 }
312caa8e 1931 break;
4633a7c4
LW		 1932 }
1933
14dd3ad8 1934 JMPENV_POP;
4633a7c4 1935 if (flags & G_DISCARD) {
3280af22 1936 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1937 retval = 0;
1938 FREETMPS;
1939 LEAVE;
1940 }
533c011a 1941 PL_op = oldop;
4633a7c4
LW		 1942 return retval;
1943}
1944
954c1994
GS		 1945/*
1946=for apidoc p||eval_pv
1947
1948Tells Perl to C<eval> the given string and return an SV* result.
1949
1950=cut
1951*/
1952
137443ea 1953SV*
864dbfa3 1954Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1955{
1956 dSP;
1957 SV* sv = newSVpv(p, 0);
1958
864dbfa3 1959 eval_sv(sv, G_SCALAR);
137443ea 1960 SvREFCNT_dec(sv);
1961
1962 SPAGAIN;
1963 sv = POPs;
1964 PUTBACK;
1965
2d8e6c8d
GS		 1966 if (croak_on_error && SvTRUE(ERRSV)) {
1967 STRLEN n_a;
cea2e8a9 1968 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1969 }
137443ea 1970
1971 return sv;
1972}
1973
4633a7c4
LW		 1974/* Require a module. */
1975
954c1994
GS		 1976/*
1977=for apidoc p||require_pv
1978
1979Tells Perl to C<require> a module.
1980
1981=cut
1982*/
1983
4633a7c4 1984void
864dbfa3 1985Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1986{
d3acc0f7
JP		 1987 SV* sv;
1988 dSP;
e788e7d3 1989 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 1990 PUTBACK;
1991 sv = sv_newmortal();
4633a7c4
LW		 1992 sv_setpv(sv, "require '");
1993 sv_catpv(sv, pv);
1994 sv_catpv(sv, "'");
864dbfa3 1995 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 1996 SPAGAIN;
1997 POPSTACK;
79072805
LW		 1998}
1999
79072805 2000void
864dbfa3 2001Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2002{
2003 register GV *gv;
2004
155aba94 2005 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW		 2006 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
2007}
2008
76e3520e 2009STATIC void
cea2e8a9 2010S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2011{
ab821d7f 2012 /* This message really ought to be max 23 lines.
2013 * Removed -h because the user already knows that opton. Others? */
fb73857a 2014
76e3520e 2015 static char *usage_msg[] = {
fb73857a 2016"-0[octal] specify record separator (\\0, if no argument)",
2017"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2018"-C enable native wide character system interfaces",
1950ee41 2019"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2020"-d[:debugger] run program under debugger",
2021"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2022"-e 'command' one line of program (several -e's allowed, omit programfile)",
2023"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2024"-i[extension] edit <> files in place (makes backup if extension supplied)",
2025"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2026"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2027"-[mM][-]module execute `use/no module...' before executing program",
2028"-n assume 'while (<>) { ... }' loop around program",
2029"-p assume loop like -n but print line also, like sed",
2030"-P run program through C preprocessor before compilation",
2031"-s enable rudimentary parsing for switches after programfile",
2032"-S look for programfile using PATH environment variable",
2033"-T enable tainting checks",
2034"-u dump core after parsing program",
fb73857a 2035"-U allow unsafe operations",
aac3bd0d
GS		 2036"-v print version, subversion (includes VERY IMPORTANT perl info)",
2037"-V[:variable] print configuration summary (or a single Config.pm variable)",
2038"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2039"-W enable all warnings",
2040"-X disable all warnings",
fb73857a 2041"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2042"\n",
2043NULL
2044};
76e3520e 2045 char **p = usage_msg;
fb73857a 2046
b0e47665
GS		 2047 PerlIO_printf(PerlIO_stdout(),
2048 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2049 name);
fb73857a 2050 while (*p)
b0e47665 2051 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2052}
2053
79072805
LW		 2054/* This routine handles any switches that can be given during run */
2055
2056char *
864dbfa3 2057Perl_moreswitches(pTHX_ char *s)
79072805 2058{
ba210ebe 2059 STRLEN numlen;
c07a80fd 2060 U32 rschar;
79072805
LW		 2061
2062 switch (*s) {
2063 case '0':
a863c7d1 2064 {
b21ed0a9 2065 numlen = 0; /* disallow underscores */
dff6d3cd 2066 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2067 SvREFCNT_dec(PL_nrs);
c07a80fd 2068 if (rschar & ~((U8)~0))
3280af22 2069 PL_nrs = &PL_sv_undef;
c07a80fd 2070 else if (!rschar && numlen >= 2)
79cb57f6 2071 PL_nrs = newSVpvn("", 0);
c07a80fd 2072 else {
2073 char ch = rschar;
79cb57f6 2074 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2075 }
2076 return s + numlen;
a863c7d1 2077 }
46487f74
GS		 2078 case 'C':
2079 PL_widesyscalls = TRUE;
2080 s++;
2081 return s;
2304df62 2082 case 'F':
3280af22
NIS		 2083 PL_minus_F = TRUE;
2084 PL_splitstr = savepv(s + 1);
2304df62
AD		 2085 s += strlen(s);
2086 return s;
79072805 2087 case 'a':
3280af22 2088 PL_minus_a = TRUE;
79072805
LW		 2089 s++;
2090 return s;
2091 case 'c':
3280af22 2092 PL_minus_c = TRUE;
79072805
LW		 2093 s++;
2094 return s;
2095 case 'd':
bbce6d69 2096 forbid_setid("-d");
4633a7c4 2097 s++;
70c94a19
RR		 2098 /* The following permits -d:Mod to accepts arguments following an =
2099 in the fashion that -MSome::Mod does. */
2100 if (*s == ':' || *s == '=') {
2101 char *start;
2102 SV *sv;
2103 sv = newSVpv("use Devel::", 0);
2104 start = ++s;
2105 /* We now allow -d:Module=Foo,Bar */
2106 while(isALNUM(*s) || *s==':') ++s;
2107 if (*s != '=')
2108 sv_catpv(sv, start);
2109 else {
2110 sv_catpvn(sv, start, s-start);
2111 sv_catpv(sv, " split(/,/,q{");
2112 sv_catpv(sv, ++s);
2113 sv_catpv(sv, "})");
2114 }
4633a7c4 2115 s += strlen(s);
70c94a19 2116 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2117 }
ed094faf 2118 if (!PL_perldb) {
3280af22 2119 PL_perldb = PERLDB_ALL;
a0d0e21e 2120 init_debugger();
ed094faf 2121 }
79072805
LW		 2122 return s;
2123 case 'D':
0453d815 2124 {
79072805 2125#ifdef DEBUGGING
bbce6d69 2126 forbid_setid("-D");
79072805 2127 if (isALPHA(s[1])) {
607df283 2128 static char debopts[] = "psltocPmfrxuLHXDST";
79072805
LW		 2129 char *d;
2130
93a17b20 2131 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2132 PL_debug |= 1 << (d - debopts);
79072805
LW		 2133 }
2134 else {
3280af22 2135 PL_debug = atoi(s+1);
79072805
LW		 2136 for (s++; isDIGIT(*s); s++) ;
2137 }
3280af22 2138 PL_debug |= 0x80000000;
79072805 2139#else
0453d815
PM		 2140 if (ckWARN_d(WARN_DEBUGGING))
2141 Perl_warner(aTHX_ WARN_DEBUGGING,
2142 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2143 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2144#endif
2145 /*SUPPRESS 530*/
2146 return s;
0453d815 2147 }
4633a7c4 2148 case 'h':
ac27b0f5 2149 usage(PL_origargv[0]);
6ad3d225 2150 PerlProc_exit(0);
79072805 2151 case 'i':
3280af22
NIS		 2152 if (PL_inplace)
2153 Safefree(PL_inplace);
2154 PL_inplace = savepv(s+1);
79072805 2155 /*SUPPRESS 530*/
3280af22 2156 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2157 if (*s) {
fb73857a 2158 *s++ = '\0';
7b8d334a
GS		 2159 if (*s == '-') /* Additional switches on #! line. */
2160 s++;
2161 }
fb73857a 2162 return s;
2163 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2164 forbid_setid("-I");
fb73857a 2165 ++s;
2166 while (*s && isSPACE(*s))
2167 ++s;
2168 if (*s) {
774d564b 2169 char *e, *p;
0df16ed7
GS		 2170 p = s;
2171 /* ignore trailing spaces (possibly followed by other switches) */
2172 do {
2173 for (e = p; *e && !isSPACE(*e); e++) ;
2174 p = e;
2175 while (isSPACE(*p))
2176 p++;
2177 } while (*p && *p != '-');
2178 e = savepvn(s, e-s);
9c8a64f0 2179 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2180 Safefree(e);
2181 s = p;
2182 if (*s == '-')
2183 s++;
79072805
LW		 2184 }
2185 else
a67e862a 2186 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2187 return s;
79072805 2188 case 'l':
3280af22 2189 PL_minus_l = TRUE;
79072805 2190 s++;
7889fe52
NIS		 2191 if (PL_ors_sv) {
2192 SvREFCNT_dec(PL_ors_sv);
2193 PL_ors_sv = Nullsv;
2194 }
79072805 2195 if (isDIGIT(*s)) {
7889fe52 2196 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2197 numlen = 0; /* disallow underscores */
7889fe52 2198 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2199 s += numlen;
2200 }
2201 else {
3280af22 2202 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2203 PL_ors_sv = newSVpvn("\n\n",2);
2204 }
2205 else {
2206 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2207 }
79072805
LW		 2208 }
2209 return s;
1a30305b 2210 case 'M':
bbce6d69 2211 forbid_setid("-M"); /* XXX ? */
1a30305b 2212 /* FALL THROUGH */
2213 case 'm':
bbce6d69 2214 forbid_setid("-m"); /* XXX ? */
1a30305b 2215 if (*++s) {
a5f75d66 2216 char *start;
11343788 2217 SV *sv;
a5f75d66
AD		 2218 char *use = "use ";
2219 /* -M-foo == 'no foo' */
2220 if (*s == '-') { use = "no "; ++s; }
11343788 2221 sv = newSVpv(use,0);
a5f75d66 2222 start = s;
1a30305b 2223 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2224 while(isALNUM(*s) || *s==':') ++s;
2225 if (*s != '=') {
11343788 2226 sv_catpv(sv, start);
c07a80fd 2227 if (*(start-1) == 'm') {
2228 if (*s != '\0')
cea2e8a9 2229 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2230 sv_catpv( sv, " ()");
c07a80fd 2231 }
2232 } else {
6df41af2 2233 if (s == start)
be98fb35
GS		 2234 Perl_croak(aTHX_ "Module name required with -%c option",
2235 s[-1]);
11343788
MB		 2236 sv_catpvn(sv, start, s-start);
2237 sv_catpv(sv, " split(/,/,q{");
2238 sv_catpv(sv, ++s);
2239 sv_catpv(sv, "})");
c07a80fd 2240 }
1a30305b 2241 s += strlen(s);
5c831c24 2242 if (!PL_preambleav)
3280af22
NIS		 2243 PL_preambleav = newAV();
2244 av_push(PL_preambleav, sv);
1a30305b 2245 }
2246 else
cea2e8a9 2247 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2248 return s;
79072805 2249 case 'n':
3280af22 2250 PL_minus_n = TRUE;
79072805
LW		 2251 s++;
2252 return s;
2253 case 'p':
3280af22 2254 PL_minus_p = TRUE;
79072805
LW		 2255 s++;
2256 return s;
2257 case 's':
bbce6d69 2258 forbid_setid("-s");
3280af22 2259 PL_doswitches = TRUE;
79072805
LW		 2260 s++;
2261 return s;
463ee0b2 2262 case 'T':
3280af22 2263 if (!PL_tainting)
cea2e8a9 2264 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2265 s++;
2266 return s;
79072805 2267 case 'u':
bf4acbe4
GS		 2268#ifdef MACOS_TRADITIONAL
2269 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2270#endif
3280af22 2271 PL_do_undump = TRUE;
79072805
LW		 2272 s++;
2273 return s;
2274 case 'U':
3280af22 2275 PL_unsafe = TRUE;
79072805
LW		 2276 s++;
2277 return s;
2278 case 'v':
b0e47665 2279 PerlIO_printf(PerlIO_stdout(),
d2560b70 2280 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2281 PL_patchlevel, ARCHNAME));
fb73857a 2282#if defined(LOCAL_PATCH_COUNT)
2283 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2284 PerlIO_printf(PerlIO_stdout(),
2285 "\n(with %d registered patch%s, "
2286 "see perl -V for more detail)",
2287 (int)LOCAL_PATCH_COUNT,
2288 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2289#endif
1a30305b 2290
b0e47665 2291 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2292 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2293#ifdef MACOS_TRADITIONAL
2294 PerlIO_printf(PerlIO_stdout(),
084592ab 2295 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2296#endif
79072805 2297#ifdef MSDOS
b0e47665
GS		 2298 PerlIO_printf(PerlIO_stdout(),
2299 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2300#endif
2301#ifdef DJGPP
b0e47665
GS		 2302 PerlIO_printf(PerlIO_stdout(),
2303 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2304 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2305#endif
79072805 2306#ifdef OS2
b0e47665
GS		 2307 PerlIO_printf(PerlIO_stdout(),
2308 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2309 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2310#endif
79072805 2311#ifdef atarist
b0e47665
GS		 2312 PerlIO_printf(PerlIO_stdout(),
2313 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2314#endif
a3f9223b 2315#ifdef __BEOS__
b0e47665
GS		 2316 PerlIO_printf(PerlIO_stdout(),
2317 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2318#endif
1d84e8df 2319#ifdef MPE
b0e47665
GS		 2320 PerlIO_printf(PerlIO_stdout(),
2321 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2322#endif
9d116dd7 2323#ifdef OEMVS
b0e47665
GS		 2324 PerlIO_printf(PerlIO_stdout(),
2325 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2326#endif
495c5fdc 2327#ifdef __VOS__
b0e47665
GS		 2328 PerlIO_printf(PerlIO_stdout(),
2329 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2330#endif
092bebab 2331#ifdef __OPEN_VM
b0e47665
GS		 2332 PerlIO_printf(PerlIO_stdout(),
2333 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2334#endif
a1a0e61e 2335#ifdef POSIX_BC
b0e47665
GS		 2336 PerlIO_printf(PerlIO_stdout(),
2337 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2338#endif
61ae2fbf 2339#ifdef __MINT__
b0e47665
GS		 2340 PerlIO_printf(PerlIO_stdout(),
2341 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2342#endif
f83d2536 2343#ifdef EPOC
b0e47665
GS		 2344 PerlIO_printf(PerlIO_stdout(),
2345 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2346#endif
baed7233
DL		 2347#ifdef BINARY_BUILD_NOTICE
2348 BINARY_BUILD_NOTICE;
2349#endif
b0e47665
GS		 2350 PerlIO_printf(PerlIO_stdout(),
2351 "\n\
79072805 2352Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2353GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2354Complete documentation for Perl, including FAQ lists, should be found on\n\
2355this system using `man perl' or `perldoc perl'. If you have access to the\n\
2356Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2357 PerlProc_exit(0);
79072805 2358 case 'w':
599cee73 2359 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2360 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2361 s++;
2362 return s;
2363 case 'W':
ac27b0f5 2364 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2365 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2366 s++;
2367 return s;
2368 case 'X':
ac27b0f5 2369 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2370 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2371 s++;
2372 return s;
a0d0e21e 2373 case '*':
79072805
LW		 2374 case ' ':
2375 if (s[1] == '-') /* Additional switches on #! line. */
2376 return s+2;
2377 break;
a0d0e21e 2378 case '-':
79072805 2379 case 0:
51882d45 2380#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2381 case '\r':
2382#endif
79072805
LW		 2383 case '\n':
2384 case '\t':
2385 break;
aa689395 2386#ifdef ALTERNATE_SHEBANG
2387 case 'S': /* OS/2 needs -S on "extproc" line. */
2388 break;
2389#endif
a0d0e21e 2390 case 'P':
3280af22 2391 if (PL_preprocess)
a0d0e21e
LW		 2392 return s+1;
2393 /* FALL THROUGH */
79072805 2394 default:
cea2e8a9 2395 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2396 }
2397 return Nullch;
2398}
2399
2400/* compliments of Tom Christiansen */
2401
2402/* unexec() can be found in the Gnu emacs distribution */
ee580363 2403/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2404
2405void
864dbfa3 2406Perl_my_unexec(pTHX)
79072805
LW		 2407{
2408#ifdef UNEXEC
46fc3d4c 2409 SV* prog;
2410 SV* file;
ee580363 2411 int status = 1;
79072805
LW		 2412 extern int etext;
2413
ee580363 2414 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2415 sv_catpv(prog, "/perl");
6b88bc9c 2416 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2417 sv_catpv(file, ".perldump");
79072805 2418
ee580363
GS		 2419 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2420 /* unexec prints msg to stderr in case of failure */
6ad3d225 2421 PerlProc_exit(status);
79072805 2422#else
a5f75d66
AD		 2423# ifdef VMS
2424# include <lib$routines.h>
2425 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2426# else
79072805 2427 ABORT(); /* for use with undump */
aa689395 2428# endif
a5f75d66 2429#endif
79072805
LW		 2430}
2431
cb68f92d
GS		 2432/* initialize curinterp */
2433STATIC void
cea2e8a9 2434S_init_interp(pTHX)
cb68f92d
GS		 2435{
2436
066ef5b5 2437#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2438#define I_REINIT \
6b88bc9c
GS		 2439 STMT_START { \
2440 PL_chopset = " \n-"; \
2441 PL_copline = NOLINE; \
2442 PL_curcop = &PL_compiling;\
2443 PL_curcopdb = NULL; \
2444 PL_dbargs = 0; \
3967c732 2445 PL_dumpindent = 4; \
6b88bc9c
GS		 2446 PL_laststatval = -1; \
2447 PL_laststype = OP_STAT; \
2448 PL_maxscream = -1; \
2449 PL_maxsysfd = MAXSYSFD; \
2450 PL_statname = Nullsv; \
2451 PL_tmps_floor = -1; \
2452 PL_tmps_ix = -1; \
2453 PL_op_mask = NULL; \
6b88bc9c
GS		 2454 PL_laststatval = -1; \
2455 PL_laststype = OP_STAT; \
2456 PL_mess_sv = Nullsv; \
2457 PL_splitstr = " "; \
2458 PL_generation = 100; \
2459 PL_exitlist = NULL; \
2460 PL_exitlistlen = 0; \
2461 PL_regindent = 0; \
2462 PL_in_clean_objs = FALSE; \
2463 PL_in_clean_all = FALSE; \
2464 PL_profiledata = NULL; \
2465 PL_rsfp = Nullfp; \
2466 PL_rsfp_filters = Nullav; \
24d3c518 2467 PL_dirty = FALSE; \
cb68f92d 2468 } STMT_END
9666903d 2469 I_REINIT;
066ef5b5
GS		 2470#else
2471# ifdef MULTIPLICITY
2472# define PERLVAR(var,type)
51371543 2473# define PERLVARA(var,n,type)
cea2e8a9 2474# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2475# if defined(USE_THREADS)
2476# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2477# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2478# else /* !USE_THREADS */
2479# define PERLVARI(var,type,init) aTHX->var = init;
2480# define PERLVARIC(var,type,init) aTHX->var = init;
2481# endif /* USE_THREADS */
cea2e8a9 2482# else
c5be433b
GS		 2483# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2484# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2485# endif
066ef5b5
GS		 2486# include "intrpvar.h"
2487# ifndef USE_THREADS
2488# include "thrdvar.h"
2489# endif
2490# undef PERLVAR
51371543 2491# undef PERLVARA
066ef5b5
GS		 2492# undef PERLVARI
2493# undef PERLVARIC
3967c732 2494# else
066ef5b5 2495# define PERLVAR(var,type)
51371543 2496# define PERLVARA(var,n,type)
533c011a
NIS		 2497# define PERLVARI(var,type,init) PL_##var = init;
2498# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2499# include "intrpvar.h"
2500# ifndef USE_THREADS
2501# include "thrdvar.h"
2502# endif
2503# undef PERLVAR
51371543 2504# undef PERLVARA
066ef5b5
GS		 2505# undef PERLVARI
2506# undef PERLVARIC
2507# endif
cb68f92d
GS		 2508#endif
2509
cb68f92d
GS		 2510}
2511
76e3520e 2512STATIC void
cea2e8a9 2513S_init_main_stash(pTHX)
79072805 2514{
463ee0b2 2515 GV *gv;
6e72f9df 2516
2517 /* Note that strtab is a rather special HV. Assumptions are made
2518 about not iterating on it, and not adding tie magic to it.
2519 It is properly deallocated in perl_destruct() */
3280af22 2520 PL_strtab = newHV();
5f08fbcd
GS		 2521#ifdef USE_THREADS
2522 MUTEX_INIT(&PL_strtab_mutex);
2523#endif
3280af22
NIS		 2524 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2525 hv_ksplit(PL_strtab, 512);
ac27b0f5 2526
3280af22 2527 PL_curstash = PL_defstash = newHV();
79cb57f6 2528 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2529 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2530 SvREFCNT_dec(GvHV(gv));
3280af22 2531 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2532 SvREADONLY_on(gv);
3280af22
NIS		 2533 HvNAME(PL_defstash) = savepv("main");
2534 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2535 GvMULTI_on(PL_incgv);
2536 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2537 GvMULTI_on(PL_hintgv);
2538 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2539 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2540 GvMULTI_on(PL_errgv);
2541 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2542 GvMULTI_on(PL_replgv);
cea2e8a9 2543 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2544 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2545 sv_setpvn(ERRSV, "", 0);
3280af22 2546 PL_curstash = PL_defstash;
11faa288 2547 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2548 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2549 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2550 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2551 /* We must init $/ before switches are processed. */
864dbfa3 2552 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2553}
2554
76e3520e 2555STATIC void
cea2e8a9 2556S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2557{
6c4ab083 2558 *fdscript = -1;
79072805 2559
3280af22
NIS		 2560 if (PL_e_script) {
2561 PL_origfilename = savepv("-e");
96436eeb 2562 }
6c4ab083
GS		 2563 else {
2564 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2565 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2566
2567 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2568 char *s = scriptname + 8;
2569 *fdscript = atoi(s);
2570 while (isDIGIT(*s))
2571 s++;
2572 if (*s) {
2573 scriptname = savepv(s + 1);
3280af22
NIS		 2574 Safefree(PL_origfilename);
2575 PL_origfilename = scriptname;
6c4ab083
GS		 2576 }
2577 }
2578 }
2579
f4dd75d9
GS		 2580#ifdef USE_ITHREADS
2581 Safefree(CopFILE(PL_curcop));
2582#else
2583 SvREFCNT_dec(CopFILEGV(PL_curcop));
2584#endif
57843af0 2585 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2586 if (strEQ(PL_origfilename,"-"))
79072805 2587 scriptname = "";
01f988be 2588 if (*fdscript >= 0) {
3280af22 2589 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2590#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2591 if (PL_rsfp)
2592 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2593#endif
2594 }
3280af22 2595 else if (PL_preprocess) {
46fc3d4c 2596 char *cpp_cfg = CPPSTDIN;
79cb57f6 2597 SV *cpp = newSVpvn("",0);
46fc3d4c 2598 SV *cmd = NEWSV(0,0);
2599
2600 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2601 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2602 sv_catpv(cpp, cpp_cfg);
79072805 2603
0df16ed7 2604 sv_catpvn(sv, "-I", 2);
fed7345c 2605 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2606
52853b95 2607#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2608 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2609sed %s -e \"/^[^#]/b\" \
2610 -e \"/^#[ ]*include[ ]/b\" \
2611 -e \"/^#[ ]*define[ ]/b\" \
2612 -e \"/^#[ ]*if[ ]/b\" \
2613 -e \"/^#[ ]*ifdef[ ]/b\" \
2614 -e \"/^#[ ]*ifndef[ ]/b\" \
2615 -e \"/^#[ ]*else/b\" \
2616 -e \"/^#[ ]*elif[ ]/b\" \
2617 -e \"/^#[ ]*undef[ ]/b\" \
2618 -e \"/^#[ ]*endif/b\" \
2619 -e \"s/^#.*//\" \
894356b3 2620 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2621 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2622#else
092bebab 2623# ifdef __OPEN_VM
cea2e8a9 2624 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2625%s %s -e '/^[^#]/b' \
2626 -e '/^#[ ]*include[ ]/b' \
2627 -e '/^#[ ]*define[ ]/b' \
2628 -e '/^#[ ]*if[ ]/b' \
2629 -e '/^#[ ]*ifdef[ ]/b' \
2630 -e '/^#[ ]*ifndef[ ]/b' \
2631 -e '/^#[ ]*else/b' \
2632 -e '/^#[ ]*elif[ ]/b' \
2633 -e '/^#[ ]*undef[ ]/b' \
2634 -e '/^#[ ]*endif/b' \
2635 -e 's/^[ ]*#.*//' \
894356b3 2636 %s | %"SVf" %"SVf" %s",
092bebab 2637# else
cea2e8a9 2638 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2639%s %s -e '/^[^#]/b' \
2640 -e '/^#[ ]*include[ ]/b' \
2641 -e '/^#[ ]*define[ ]/b' \
2642 -e '/^#[ ]*if[ ]/b' \
2643 -e '/^#[ ]*ifdef[ ]/b' \
2644 -e '/^#[ ]*ifndef[ ]/b' \
2645 -e '/^#[ ]*else/b' \
2646 -e '/^#[ ]*elif[ ]/b' \
2647 -e '/^#[ ]*undef[ ]/b' \
2648 -e '/^#[ ]*endif/b' \
2649 -e 's/^[ ]*#.*//' \
894356b3 2650 %s | %"SVf" -C %"SVf" %s",
092bebab 2651# endif
79072805
LW		 2652#ifdef LOC_SED
2653 LOC_SED,
2654#else
2655 "sed",
2656#endif
3280af22 2657 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2658#endif
46fc3d4c 2659 scriptname, cpp, sv, CPPMINUS);
3280af22 2660 PL_doextract = FALSE;
79072805 2661#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2662 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2663#ifdef HAS_SETEUID
b28d0864 2664 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2665#else
2666#ifdef HAS_SETREUID
b28d0864 2667 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2668#else
2669#ifdef HAS_SETRESUID
b28d0864 2670 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2671#else
b28d0864 2672 PerlProc_setuid(PL_uid);
79072805
LW		 2673#endif
2674#endif
85e6fe83 2675#endif
b28d0864 2676 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2677 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2678 }
2679#endif /* IAMSUID */
3280af22 2680 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2681 SvREFCNT_dec(cmd);
2682 SvREFCNT_dec(cpp);
79072805
LW		 2683 }
2684 else if (!*scriptname) {
bbce6d69 2685 forbid_setid("program input from stdin");
3280af22 2686 PL_rsfp = PerlIO_stdin();
79072805 2687 }
96436eeb 2688 else {
3280af22 2689 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2690#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2691 if (PL_rsfp)
2692 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2693#endif
2694 }
3280af22 2695 if (!PL_rsfp) {
13281fa4 2696#ifdef DOSUID
a687059c 2697#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2698 if (PL_euid &&
cc49e20b 2699 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2700 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2701 {
46fc3d4c 2702 /* try again */
a7cb1f99 2703 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2704 (int)PERL_REVISION, (int)PERL_VERSION,
2705 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2706 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2707 }
2708#endif
2709#endif
cea2e8a9 2710 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2711 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2712 }
79072805 2713}
8d063cd8 2714
7b89560d
JH		 2715/* Mention
2716 * I_SYSSTATVFS HAS_FSTATVFS
2717 * I_SYSMOUNT
c890dc6c 2718 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2719 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2720 * here so that metaconfig picks them up. */
2721
104d25b7 2722#ifdef IAMSUID
864dbfa3 2723STATIC int
e688b231 2724S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2725{
0545a864
JH		 2726 int check_okay = 0; /* able to do all the required sys/libcalls */
2727 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2728/*
ad27e871 2729 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2730 * fstatvfs() is UNIX98.
0545a864 2731 * fstatfs() is 4.3 BSD.
ad27e871 2732 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2733 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2734 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2735 */
2736
6439433f
JH		 2737#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2738
2739# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2740 defined(HAS_FSTATVFS)
2741# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2742 struct statvfs stfs;
6439433f 2743
104d25b7
JH		 2744 check_okay = fstatvfs(fd, &stfs) == 0;
2745 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2746# endif /* fstatvfs */
ac27b0f5 2747
6439433f
JH		 2748# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2749 defined(PERL_MOUNT_NOSUID) && \
2750 defined(HAS_FSTATFS) && \
2751 defined(HAS_STRUCT_STATFS) && \
2752 defined(HAS_STRUCT_STATFS_F_FLAGS)
2753# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2754 struct statfs stfs;
6439433f 2755
104d25b7 2756 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2757 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2758# endif /* fstatfs */
2759
2760# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2761 defined(PERL_MOUNT_NOSUID) && \
2762 defined(HAS_FSTAT) && \
2763 defined(HAS_USTAT) && \
2764 defined(HAS_GETMNT) && \
2765 defined(HAS_STRUCT_FS_DATA) && \
2766 defined(NOSTAT_ONE)
2767# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2768 struct stat fdst;
6439433f 2769
0545a864 2770 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2771 struct ustat us;
2772 if (ustat(fdst.st_dev, &us) == 0) {
2773 struct fs_data fsd;
2774 /* NOSTAT_ONE here because we're not examining fields which
2775 * vary between that case and STAT_ONE. */
ad27e871 2776 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2777 size_t cmplen = sizeof(us.f_fname);
2778 if (sizeof(fsd.fd_req.path) < cmplen)
2779 cmplen = sizeof(fsd.fd_req.path);
2780 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2781 fdst.st_dev == fsd.fd_req.dev) {
2782 check_okay = 1;
2783 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2784 }
2785 }
2786 }
2787 }
0545a864 2788 }
6439433f
JH		 2789# endif /* fstat+ustat+getmnt */
2790
2791# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2792 defined(HAS_GETMNTENT) && \
2793 defined(HAS_HASMNTOPT) && \
2794 defined(MNTOPT_NOSUID)
2795# define FD_ON_NOSUID_CHECK_OKAY
2796 FILE *mtab = fopen("/etc/mtab", "r");
2797 struct mntent *entry;
2798 struct stat stb, fsb;
104d25b7
JH		 2799
2800 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2801 while (entry = getmntent(mtab)) {
2802 if (stat(entry->mnt_dir, &fsb) == 0
2803 && fsb.st_dev == stb.st_dev)
2804 {
2805 /* found the filesystem */
2806 check_okay = 1;
2807 if (hasmntopt(entry, MNTOPT_NOSUID))
2808 on_nosuid = 1;
2809 break;
2810 } /* A single fs may well fail its stat(). */
2811 }
104d25b7
JH		 2812 }
2813 if (mtab)
6439433f
JH		 2814 fclose(mtab);
2815# endif /* getmntent+hasmntopt */
0545a864 2816
ac27b0f5 2817 if (!check_okay)
0545a864 2818 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2819 return on_nosuid;
2820}
2821#endif /* IAMSUID */
2822
76e3520e 2823STATIC void
cea2e8a9 2824S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2825{
155aba94 2826#ifdef IAMSUID
96436eeb 2827 int which;
155aba94 2828#endif
96436eeb 2829
13281fa4
LW		 2830 /* do we need to emulate setuid on scripts? */
2831
2832 /* This code is for those BSD systems that have setuid #! scripts disabled
2833 * in the kernel because of a security problem. Merely defining DOSUID
2834 * in perl will not fix that problem, but if you have disabled setuid
2835 * scripts in the kernel, this will attempt to emulate setuid and setgid
2836 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2837 * root version must be called suidperl or sperlN.NNN. If regular perl
2838 * discovers that it has opened a setuid script, it calls suidperl with
2839 * the same argv that it had. If suidperl finds that the script it has
2840 * just opened is NOT setuid root, it sets the effective uid back to the
2841 * uid. We don't just make perl setuid root because that loses the
2842 * effective uid we had before invoking perl, if it was different from the
2843 * uid.
13281fa4
LW		 2844 *
2845 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2846 * be defined in suidperl only. suidperl must be setuid root. The
2847 * Configure script will set this up for you if you want it.
2848 */
a687059c 2849
13281fa4 2850#ifdef DOSUID
6e72f9df 2851 char *s, *s2;
a0d0e21e 2852
b28d0864 2853 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2854 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2855 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2856 I32 len;
2d8e6c8d 2857 STRLEN n_a;
13281fa4 2858
a687059c 2859#ifdef IAMSUID
fe14fcc3 2860#ifndef HAS_SETREUID
a687059c
LW		 2861 /* On this access check to make sure the directories are readable,
2862 * there is actually a small window that the user could use to make
2863 * filename point to an accessible directory. So there is a faint
2864 * chance that someone could execute a setuid script down in a
2865 * non-accessible directory. I don't know what to do about that.
2866 * But I don't think it's too important. The manual lies when
2867 * it says access() is useful in setuid programs.
2868 */
cc49e20b 2869 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2870 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2871#else
2872 /* If we can swap euid and uid, then we can determine access rights
2873 * with a simple stat of the file, and then compare device and
2874 * inode to make sure we did stat() on the same file we opened.
2875 * Then we just have to make sure he or she can execute it.
2876 */
2877 {
2878 struct stat tmpstatbuf;
2879
85e6fe83
LW		 2880 if (
2881#ifdef HAS_SETREUID
b28d0864 2882 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2883#else
2884# if HAS_SETRESUID
b28d0864 2885 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2886# endif
85e6fe83 2887#endif
b28d0864 2888 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2889 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2890 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2891 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2892#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2893 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2894 Perl_croak(aTHX_ "Permission denied");
104d25b7 2895#endif
b28d0864
NIS		 2896 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2897 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2898 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2899 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2900 }
85e6fe83
LW		 2901 if (
2902#ifdef HAS_SETREUID
b28d0864 2903 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2904#else
2905# if defined(HAS_SETRESUID)
b28d0864 2906 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2907# endif
85e6fe83 2908#endif
b28d0864 2909 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2910 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2911 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2912 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2913 }
fe14fcc3 2914#endif /* HAS_SETREUID */
a687059c
LW		 2915#endif /* IAMSUID */
2916
b28d0864 2917 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2918 Perl_croak(aTHX_ "Permission denied");
b28d0864 2919 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2920 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2921 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2922 CopLINE_inc(PL_curcop);
6b88bc9c 2923 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2924 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2925 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2926 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2927 if (*s == ' ') s++;
45d8adaa 2928 while (!isSPACE(*s)) s++;
2d8e6c8d 2929 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2930 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2931 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2932 Perl_croak(aTHX_ "Not a perl script");
a687059c 2933 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2934 /*
2935 * #! arg must be what we saw above. They can invoke it by
2936 * mentioning suidperl explicitly, but they may not add any strange
2937 * arguments beyond what #! says if they do invoke suidperl that way.
2938 */
2939 len = strlen(validarg);
2940 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2941 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2942 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2943
2944#ifndef IAMSUID
b28d0864
NIS		 2945 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2946 PL_euid == PL_statbuf.st_uid)
2947 if (!PL_do_undump)
cea2e8a9 2948 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2949FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2950#endif /* IAMSUID */
13281fa4 2951
b28d0864
NIS		 2952 if (PL_euid) { /* oops, we're not the setuid root perl */
2953 (void)PerlIO_close(PL_rsfp);
13281fa4 2954#ifndef IAMSUID
46fc3d4c 2955 /* try again */
a7cb1f99 2956 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2957 (int)PERL_REVISION, (int)PERL_VERSION,
2958 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2959#endif
cea2e8a9 2960 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2961 }
2962
b28d0864 2963 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2964#ifdef HAS_SETEGID
b28d0864 2965 (void)setegid(PL_statbuf.st_gid);
a687059c 2966#else
fe14fcc3 2967#ifdef HAS_SETREGID
b28d0864 2968 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 2969#else
2970#ifdef HAS_SETRESGID
b28d0864 2971 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2972#else
b28d0864 2973 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 2974#endif
2975#endif
85e6fe83 2976#endif
b28d0864 2977 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2978 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2979 }
b28d0864
NIS		 2980 if (PL_statbuf.st_mode & S_ISUID) {
2981 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2982#ifdef HAS_SETEUID
b28d0864 2983 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2984#else
fe14fcc3 2985#ifdef HAS_SETREUID
b28d0864 2986 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 2987#else
2988#ifdef HAS_SETRESUID
b28d0864 2989 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2990#else
b28d0864 2991 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 2992#endif
2993#endif
85e6fe83 2994#endif
b28d0864 2995 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2996 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2997 }
b28d0864 2998 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2999#ifdef HAS_SETEUID
b28d0864 3000 (void)seteuid((Uid_t)PL_uid);
a687059c 3001#else
fe14fcc3 3002#ifdef HAS_SETREUID
b28d0864 3003 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3004#else
85e6fe83 3005#ifdef HAS_SETRESUID
b28d0864 3006 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3007#else
b28d0864 3008 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3009#endif
a687059c
LW		 3010#endif
3011#endif
b28d0864 3012 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3013 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3014 }
748a9306 3015 init_ids();
b28d0864 3016 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3017 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3018 }
3019#ifdef IAMSUID
6b88bc9c 3020 else if (PL_preprocess)
cea2e8a9 3021 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3022 else if (fdscript >= 0)
cea2e8a9 3023 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3024 else
cea2e8a9 3025 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3026
3027 /* We absolutely must clear out any saved ids here, so we */
3028 /* exec the real perl, substituting fd script for scriptname. */
3029 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3030 PerlIO_rewind(PL_rsfp);
3031 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3032 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3033 if (!PL_origargv[which])
cea2e8a9
GS		 3034 Perl_croak(aTHX_ "Permission denied");
3035 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3036 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3037#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3038 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3039#endif
a7cb1f99 3040 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3041 (int)PERL_REVISION, (int)PERL_VERSION,
3042 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3043 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3044#endif /* IAMSUID */
a687059c 3045#else /* !DOSUID */
3280af22 3046 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3047#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3048 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3049 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3050 ||
b28d0864 3051 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3052 )
b28d0864 3053 if (!PL_do_undump)
cea2e8a9 3054 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3055FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3056#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3057 /* not set-id, must be wrapped */
a687059c 3058 }
13281fa4 3059#endif /* DOSUID */
79072805 3060}
13281fa4 3061
76e3520e 3062STATIC void
cea2e8a9 3063S_find_beginning(pTHX)
79072805 3064{
6e72f9df 3065 register char *s, *s2;
33b78306
LW		 3066
3067 /* skip forward in input to the real script? */
3068
bbce6d69 3069 forbid_setid("-x");
bf4acbe4 3070#ifdef MACOS_TRADITIONAL
084592ab 3071 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3072
bf4acbe4
GS		 3073 while (PL_doextract || gMacPerl_AlwaysExtract) {
3074 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3075 if (!gMacPerl_AlwaysExtract)
3076 Perl_croak(aTHX_ "No Perl script found in input\n");
3077
3078 if (PL_doextract) /* require explicit override ? */
3079 if (!OverrideExtract(PL_origfilename))
3080 Perl_croak(aTHX_ "User aborted script\n");
3081 else
3082 PL_doextract = FALSE;
3083
3084 /* Pater peccavi, file does not have #! */
3085 PerlIO_rewind(PL_rsfp);
ac27b0f5 3086
bf4acbe4
GS		 3087 break;
3088 }
3089#else
3280af22
NIS		 3090 while (PL_doextract) {
3091 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3092 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3093#endif
6e72f9df 3094 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3095 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3096 PL_doextract = FALSE;
6e72f9df 3097 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3098 s2 = s;
3099 while (*s == ' ' || *s == '\t') s++;
3100 if (*s++ == '-') {
3101 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3102 if (strnEQ(s2-4,"perl",4))
3103 /*SUPPRESS 530*/
155aba94
GS		 3104 while ((s = moreswitches(s)))
3105 ;
33b78306 3106 }
83025b21
LW		 3107 }
3108 }
3109}
3110
afe37c7d 3111
76e3520e 3112STATIC void
cea2e8a9 3113S_init_ids(pTHX)
352d5a3a 3114{
d8eceb89
JH		 3115 PL_uid = PerlProc_getuid();
3116 PL_euid = PerlProc_geteuid();
3117 PL_gid = PerlProc_getgid();
3118 PL_egid = PerlProc_getegid();
748a9306 3119#ifdef VMS
b28d0864
NIS		 3120 PL_uid |= PL_gid << 16;
3121 PL_euid |= PL_egid << 16;
748a9306 3122#endif
3280af22 3123 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3124}
79072805 3125
76e3520e 3126STATIC void
cea2e8a9 3127S_forbid_setid(pTHX_ char *s)
bbce6d69 3128{
3280af22 3129 if (PL_euid != PL_uid)
cea2e8a9 3130 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3131 if (PL_egid != PL_gid)
cea2e8a9 3132 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3133}
3134
1ee4443e
IZ		 3135void
3136Perl_init_debugger(pTHX)
748a9306 3137{
1ee4443e
IZ		 3138 HV *ostash = PL_curstash;
3139
3280af22
NIS		 3140 PL_curstash = PL_debstash;
3141 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3142 AvREAL_off(PL_dbargs);
3143 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3144 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3145 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3146 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3147 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3148 sv_setiv(PL_DBsingle, 0);
3280af22 3149 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3150 sv_setiv(PL_DBtrace, 0);
3280af22 3151 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3152 sv_setiv(PL_DBsignal, 0);
1ee4443e 3153 PL_curstash = ostash;
352d5a3a
LW		 3154}
3155
2ce36478
SM		 3156#ifndef STRESS_REALLOC
3157#define REASONABLE(size) (size)
3158#else
3159#define REASONABLE(size) (1) /* unreasonable */
3160#endif
3161
11343788 3162void
cea2e8a9 3163Perl_init_stacks(pTHX)
79072805 3164{
e336de0d 3165 /* start with 128-item stack and 8K cxstack */
3280af22 3166 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3167 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3168 PL_curstackinfo->si_type = PERLSI_MAIN;
3169 PL_curstack = PL_curstackinfo->si_stack;
3170 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3171
3280af22
NIS		 3172 PL_stack_base = AvARRAY(PL_curstack);
3173 PL_stack_sp = PL_stack_base;
3174 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3175
3280af22
NIS		 3176 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3177 PL_tmps_floor = -1;
3178 PL_tmps_ix = -1;
3179 PL_tmps_max = REASONABLE(128);
8990e307 3180
3280af22
NIS		 3181 New(54,PL_markstack,REASONABLE(32),I32);
3182 PL_markstack_ptr = PL_markstack;
3183 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3184
ce2f7c3b 3185 SET_MARK_OFFSET;
e336de0d 3186
3280af22
NIS		 3187 New(54,PL_scopestack,REASONABLE(32),I32);
3188 PL_scopestack_ix = 0;
3189 PL_scopestack_max = REASONABLE(32);
79072805 3190
3280af22
NIS		 3191 New(54,PL_savestack,REASONABLE(128),ANY);
3192 PL_savestack_ix = 0;
3193 PL_savestack_max = REASONABLE(128);
79072805 3194
3280af22
NIS		 3195 New(54,PL_retstack,REASONABLE(16),OP*);
3196 PL_retstack_ix = 0;
3197 PL_retstack_max = REASONABLE(16);
378cc40b 3198}
33b78306 3199
2ce36478
SM		 3200#undef REASONABLE
3201
76e3520e 3202STATIC void
cea2e8a9 3203S_nuke_stacks(pTHX)
6e72f9df 3204{
3280af22
NIS		 3205 while (PL_curstackinfo->si_next)
3206 PL_curstackinfo = PL_curstackinfo->si_next;
3207 while (PL_curstackinfo) {
3208 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3209 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3210 Safefree(PL_curstackinfo->si_cxstack);
3211 Safefree(PL_curstackinfo);
3212 PL_curstackinfo = p;
e336de0d 3213 }
3280af22
NIS		 3214 Safefree(PL_tmps_stack);
3215 Safefree(PL_markstack);
3216 Safefree(PL_scopestack);
3217 Safefree(PL_savestack);
3218 Safefree(PL_retstack);
378cc40b 3219}
33b78306 3220
76e3520e 3221#ifndef PERL_OBJECT
760ac839 3222static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3223#endif
7aa04957 3224
76e3520e 3225STATIC void
cea2e8a9 3226S_init_lexer(pTHX)
8990e307 3227{
76e3520e
GS		 3228#ifdef PERL_OBJECT
3229 PerlIO *tmpfp;
3230#endif
3280af22
NIS		 3231 tmpfp = PL_rsfp;
3232 PL_rsfp = Nullfp;
3233 lex_start(PL_linestr);
3234 PL_rsfp = tmpfp;
79cb57f6 3235 PL_subname = newSVpvn("main",4);
8990e307
LW		 3236}
3237
76e3520e 3238STATIC void
cea2e8a9 3239S_init_predump_symbols(pTHX)
45d8adaa 3240{
93a17b20 3241 GV *tmpgv;
af8c498a 3242 IO *io;
79072805 3243
864dbfa3 3244 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3245 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3246 GvMULTI_on(PL_stdingv);
af8c498a
GS		 3247 io = GvIOp(PL_stdingv);
3248 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3249 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3250 GvMULTI_on(tmpgv);
af8c498a 3251 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3252
85e6fe83 3253 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3254 GvMULTI_on(tmpgv);
af8c498a
GS		 3255 io = GvIOp(tmpgv);
3256 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3257 setdefout(tmpgv);
adbc6bb1 3258 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3259 GvMULTI_on(tmpgv);
af8c498a 3260 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3261
bf49b057
GS		 3262 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3263 GvMULTI_on(PL_stderrgv);
3264 io = GvIOp(PL_stderrgv);
af8c498a 3265 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3266 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3267 GvMULTI_on(tmpgv);
af8c498a 3268 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3269
3280af22 3270 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3271
bf4acbe4
GS		 3272 if (PL_osname)
3273 Safefree(PL_osname);
3274 PL_osname = savepv(OSNAME);
79072805 3275}
33b78306 3276
76e3520e 3277STATIC void
cea2e8a9 3278S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3279{
79072805
LW		 3280 char *s;
3281 SV *sv;
3282 GV* tmpgv;
103a7189 3283 char **dup_env_base = 0;
9cbac4c7 3284#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189 3285 int dup_env_count = 0;
9cbac4c7 3286#endif
fe14fcc3 3287
79072805 3288 argc--,argv++; /* skip name of script */
3280af22 3289 if (PL_doswitches) {
79072805
LW		 3290 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3291 if (!argv[0][1])
3292 break;
379d538a 3293 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3294 argc--,argv++;
3295 break;
3296 }
155aba94 3297 if ((s = strchr(argv[0], '='))) {
79072805 3298 *s++ = '\0';
85e6fe83 3299 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3300 }
3301 else
85e6fe83 3302 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3303 }
79072805 3304 }
3280af22
NIS		 3305 PL_toptarget = NEWSV(0,0);
3306 sv_upgrade(PL_toptarget, SVt_PVFM);
3307 sv_setpvn(PL_toptarget, "", 0);
3308 PL_bodytarget = NEWSV(0,0);
3309 sv_upgrade(PL_bodytarget, SVt_PVFM);
3310 sv_setpvn(PL_bodytarget, "", 0);
3311 PL_formtarget = PL_bodytarget;
79072805 3312
bbce6d69 3313 TAINT;
155aba94 3314 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3315#ifdef MACOS_TRADITIONAL
3316 /* $0 is not majick on a Mac */
3317 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3318#else
3280af22 3319 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3320 magicname("0", "0", 1);
bf4acbe4 3321#endif
79072805 3322 }
155aba94 3323 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3324#ifdef OS2
23da6c43 3325 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3326#else
3280af22 3327 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3328#endif
155aba94 3329 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3330 GvMULTI_on(PL_argvgv);
3331 (void)gv_AVadd(PL_argvgv);
3332 av_clear(GvAVn(PL_argvgv));
79072805 3333 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3334 SV *sv = newSVpv(argv[0],0);
3335 av_push(GvAVn(PL_argvgv),sv);
3336 if (PL_widesyscalls)
e84ff256 3337 (void)sv_utf8_decode(sv);
79072805
LW		 3338 }
3339 }
155aba94 3340 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3341 HV *hv;
3280af22
NIS		 3342 GvMULTI_on(PL_envgv);
3343 hv = GvHVn(PL_envgv);
65c50114 3344 hv_magic(hv, Nullgv, 'E');
fa6a1c44 3345#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3346 /* Note that if the supplied env parameter is actually a copy
3347 of the global environ then it may now point to free'd memory
3348 if the environment has been modified since. To avoid this
3349 problem we treat env==NULL as meaning 'use the default'
3350 */
3351 if (!env)
3352 env = environ;
5aabfad6 3353 if (env != environ)
79072805 3354 environ[0] = Nullch;
103a7189
JH		 3355#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3356 {
3357 char **env_base;
3358 for (env_base = env; *env; env++)
3359 dup_env_count++;
3360 if ((dup_env_base = (char **)
480bfd1e 3361 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3362 char **dup_env;
3363 for (env = env_base, dup_env = dup_env_base;
3364 *env;
480bfd1e
JH		 3365 env++, dup_env++) {
3366 /* With environ one needs to use safesysmalloc(). */
3367 *dup_env = safesysmalloc(strlen(*env) + 1);
3368 (void)strcpy(*dup_env, *env);
3369 }
103a7189
JH		 3370 *dup_env = Nullch;
3371 env = dup_env_base;
3372 } /* else what? */
3373 }
3374#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3375 for (; *env; env++) {
93a17b20 3376 if (!(s = strchr(*env,'=')))
79072805
LW		 3377 continue;
3378 *s++ = '\0';
60ce6247 3379#if defined(MSDOS)
137443ea 3380 (void)strupr(*env);
3381#endif
79072805
LW		 3382 sv = newSVpv(s--,0);
3383 (void)hv_store(hv, *env, s - *env, sv, 0);
3384 *s = '=';
fe14fcc3 3385 }
480bfd1e 3386#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3387 if (dup_env_base) {
3388 char **dup_env;
3389 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3390 safesysfree(*dup_env);
3391 safesysfree(dup_env_base);
103a7189 3392 }
7e0f6a1f 3393#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3394#endif /* USE_ENVIRON_ARRAY */
4550b24a 3395#ifdef DYNAMIC_ENV_FETCH
3396 HvNAME(hv) = savepv(ENV_HV_NAME);
3397#endif
79072805 3398 }
bbce6d69 3399 TAINT_NOT;
155aba94 3400 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3401 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3402}
34de22dd 3403
76e3520e 3404STATIC void
cea2e8a9 3405S_init_perllib(pTHX)
34de22dd 3406{
85e6fe83 3407 char *s;
3280af22 3408 if (!PL_tainting) {
552a7a9b 3409#ifndef VMS
76e3520e 3410 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3411 if (s)
9c8a64f0 3412 incpush(s, TRUE, TRUE);
85e6fe83 3413 else
9c8a64f0 3414 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3415#else /* VMS */
3416 /* Treat PERL5?LIB as a possible search list logical name -- the
3417 * "natural" VMS idiom for a Unix path string. We allow each
3418 * element to be a set of |-separated directories for compatibility.
3419 */
3420 char buf[256];
3421 int idx = 0;
3422 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3423 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3424 else
9c8a64f0 3425 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3426#endif /* VMS */
85e6fe83 3427 }
34de22dd 3428
c90c0ff4 3429/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3430 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3431*/
4633a7c4 3432#ifdef APPLLIB_EXP
9c8a64f0 3433 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3434#endif
4633a7c4 3435
fed7345c 3436#ifdef ARCHLIB_EXP
9c8a64f0 3437 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3438#endif
bf4acbe4
GS		 3439#ifdef MACOS_TRADITIONAL
3440 {
3441 struct stat tmpstatbuf;
3442 SV * privdir = NEWSV(55, 0);
3443 char * macperl = PerlEnv_getenv("MACPERL");
3444
3445 if (!macperl)
3446 macperl = "";
3447
3448 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3449 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3450 incpush(SvPVX(privdir), TRUE, FALSE);
3451 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3452 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3453 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3454
bf4acbe4
GS		 3455 SvREFCNT_dec(privdir);
3456 }
3457 if (!PL_tainting)
3458 incpush(":", FALSE, FALSE);
3459#else
fed7345c 3460#ifndef PRIVLIB_EXP
65f19062 3461# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3462#endif
ac27b0f5 3463#if defined(WIN32)
9c8a64f0 3464 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3465#else
9c8a64f0 3466 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3467#endif
4633a7c4 3468
65f19062 3469#ifdef SITEARCH_EXP
3b290362
GS		 3470 /* sitearch is always relative to sitelib on Windows for
3471 * DLL-based path intuition to work correctly */
3472# if !defined(WIN32)
9c8a64f0 3473 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3474# endif
3475#endif
3476
4633a7c4 3477#ifdef SITELIB_EXP
65f19062 3478# if defined(WIN32)
9c8a64f0 3479 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3480# else
9c8a64f0 3481 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3482# endif
3483#endif
189d1e8d 3484
65f19062 3485#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3486 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3487#endif
65f19062
GS		 3488
3489#ifdef PERL_VENDORARCH_EXP
4ea817c6 3490 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3491 * DLL-based path intuition to work correctly */
3492# if !defined(WIN32)
9c8a64f0 3493 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3494# endif
4b03c463 3495#endif
65f19062
GS		 3496
3497#ifdef PERL_VENDORLIB_EXP
3498# if defined(WIN32)
9c8a64f0 3499 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3500# else
9c8a64f0 3501 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3502# endif
a3635516 3503#endif
65f19062
GS		 3504
3505#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3506 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3507#endif
65f19062 3508
3b777bb4
GS		 3509#ifdef PERL_OTHERLIBDIRS
3510 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3511#endif
3512
3280af22 3513 if (!PL_tainting)
9c8a64f0 3514 incpush(".", FALSE, FALSE);
bf4acbe4 3515#endif /* MACOS_TRADITIONAL */
774d564b 3516}
3517
ed79a026 3518#if defined(DOSISH) || defined(EPOC)
774d564b 3519# define PERLLIB_SEP ';'
3520#else
3521# if defined(VMS)
3522# define PERLLIB_SEP '|'
3523# else
bf4acbe4
GS		 3524# if defined(MACOS_TRADITIONAL)
3525# define PERLLIB_SEP ','
3526# else
3527# define PERLLIB_SEP ':'
3528# endif
774d564b 3529# endif
3530#endif
3531#ifndef PERLLIB_MANGLE
3532# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3533#endif
774d564b 3534
76e3520e 3535STATIC void
9c8a64f0 3536S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3537{
3538 SV *subdir = Nullsv;
774d564b 3539
3b290362 3540 if (!p || !*p)
774d564b 3541 return;
3542
9c8a64f0 3543 if (addsubdirs || addoldvers) {
00db4c45 3544 subdir = sv_newmortal();
774d564b 3545 }
3546
3547 /* Break at all separators */
3548 while (p && *p) {
8c52afec 3549 SV *libdir = NEWSV(55,0);
774d564b 3550 char *s;
3551
3552 /* skip any consecutive separators */
3553 while ( *p == PERLLIB_SEP ) {
3554 /* Uncomment the next line for PATH semantics */
79cb57f6 3555 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3556 p++;
3557 }
3558
3559 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3560 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3561 (STRLEN)(s - p));
3562 p = s + 1;
3563 }
3564 else {
3565 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3566 p = Nullch; /* break out */
3567 }
bf4acbe4
GS		 3568#ifdef MACOS_TRADITIONAL
3569 if (!strchr(SvPVX(libdir), ':'))
3570 sv_insert(libdir, 0, 0, ":", 1);
3571 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3572 sv_catpv(libdir, ":");
3573#endif
774d564b 3574
3575 /*
3576 * BEFORE pushing libdir onto @INC we may first push version- and
3577 * archname-specific sub-directories.
3578 */
9c8a64f0 3579 if (addsubdirs || addoldvers) {
29d82f8d 3580#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3581 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3582 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3583 const char **incver;
3584#endif
774d564b 3585 struct stat tmpstatbuf;
aa689395 3586#ifdef VMS
3587 char *unix;
3588 STRLEN len;
774d564b 3589
2d8e6c8d 3590 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3591 len = strlen(unix);
3592 while (unix[len-1] == '/') len--; /* Cosmetic */
3593 sv_usepvn(libdir,unix,len);
3594 }
3595 else
bf49b057 3596 PerlIO_printf(Perl_error_log,
aa689395 3597 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3598 SvPV(libdir,len));
aa689395 3599#endif
9c8a64f0 3600 if (addsubdirs) {
bf4acbe4
GS		 3601#ifdef MACOS_TRADITIONAL
3602#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3603#define PERL_ARCH_FMT "%s:"
3604#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3605#else
3606#define PERL_AV_SUFFIX_FMT "/"
3607#define PERL_ARCH_FMT "/%s"
084592ab 3608#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3609#endif
9c8a64f0 3610 /* .../version/archname if -d .../version/archname */
084592ab 3611 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3612 libdir,
3613 (int)PERL_REVISION, (int)PERL_VERSION,
3614 (int)PERL_SUBVERSION, ARCHNAME);
3615 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3616 S_ISDIR(tmpstatbuf.st_mode))
3617 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3618
9c8a64f0 3619 /* .../version if -d .../version */
084592ab 3620 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3621 (int)PERL_REVISION, (int)PERL_VERSION,
3622 (int)PERL_SUBVERSION);
3623 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3624 S_ISDIR(tmpstatbuf.st_mode))
3625 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3626
3627 /* .../archname if -d .../archname */
bf4acbe4 3628 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3629 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3630 S_ISDIR(tmpstatbuf.st_mode))
3631 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3632 }
9c8a64f0 3633
9c8a64f0 3634#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3635 if (addoldvers) {
9c8a64f0
GS		 3636 for (incver = incverlist; *incver; incver++) {
3637 /* .../xxx if -d .../xxx */
bf4acbe4 3638 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3639 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3640 S_ISDIR(tmpstatbuf.st_mode))
3641 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3642 }
3643 }
29d82f8d 3644#endif
774d564b 3645 }
3646
3647 /* finally push this lib directory on the end of @INC */
3280af22 3648 av_push(GvAVn(PL_incgv), libdir);
774d564b 3649 }
34de22dd 3650}
93a17b20 3651
199100c8 3652#ifdef USE_THREADS
76e3520e 3653STATIC struct perl_thread *
cea2e8a9 3654S_init_main_thread(pTHX)
199100c8 3655{
c5be433b 3656#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3657 struct perl_thread *thr;
cea2e8a9 3658#endif
199100c8
MB		 3659 XPV *xpv;
3660
52e1cb5e 3661 Newz(53, thr, 1, struct perl_thread);
533c011a 3662 PL_curcop = &PL_compiling;
c5be433b 3663 thr->interp = PERL_GET_INTERP;
199100c8 3664 thr->cvcache = newHV();
54b9620d 3665 thr->threadsv = newAV();
940cb80d 3666 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3667 thr->specific = newAV();
3668 thr->flags = THRf_R_JOINABLE;
3669 MUTEX_INIT(&thr->mutex);
3670 /* Handcraft thrsv similarly to mess_sv */
533c011a 3671 New(53, PL_thrsv, 1, SV);
199100c8 3672 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3673 SvFLAGS(PL_thrsv) = SVt_PV;
3674 SvANY(PL_thrsv) = (void*)xpv;
3675 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3676 SvPVX(PL_thrsv) = (char*)thr;
3677 SvCUR_set(PL_thrsv, sizeof(thr));
3678 SvLEN_set(PL_thrsv, sizeof(thr));
3679 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3680 thr->oursv = PL_thrsv;
3681 PL_chopset = " \n-";
3967c732 3682 PL_dumpindent = 4;
533c011a
NIS		 3683
3684 MUTEX_LOCK(&PL_threads_mutex);
3685 PL_nthreads++;
199100c8
MB		 3686 thr->tid = 0;
3687 thr->next = thr;
3688 thr->prev = thr;
8dcd6f7b 3689 thr->thr_done = 0;
533c011a 3690 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3691
4b026b9e 3692#ifdef HAVE_THREAD_INTERN
4f63d024 3693 Perl_init_thread_intern(thr);
235db74f
GS		 3694#endif
3695
3696#ifdef SET_THREAD_SELF
3697 SET_THREAD_SELF(thr);
199100c8
MB		 3698#else
3699 thr->self = pthread_self();
235db74f 3700#endif /* SET_THREAD_SELF */
06d86050 3701 PERL_SET_THX(thr);
199100c8
MB		 3702
3703 /*
411caa50
JH		 3704 * These must come after the thread self setting
3705 * because sv_setpvn does SvTAINT and the taint
3706 * fields thread selfness being set.
199100c8 3707 */
533c011a
NIS		 3708 PL_toptarget = NEWSV(0,0);
3709 sv_upgrade(PL_toptarget, SVt_PVFM);
3710 sv_setpvn(PL_toptarget, "", 0);
3711 PL_bodytarget = NEWSV(0,0);
3712 sv_upgrade(PL_bodytarget, SVt_PVFM);
3713 sv_setpvn(PL_bodytarget, "", 0);
3714 PL_formtarget = PL_bodytarget;
79cb57f6 3715 thr->errsv = newSVpvn("", 0);
78857c3c 3716 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3717
533c011a 3718 PL_maxscream = -1;
0b94c7bb
GS		 3719 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3720 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3721 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3722 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3723 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3724 PL_regindent = 0;
3725 PL_reginterp_cnt = 0;
5c0ca799 3726
199100c8
MB		 3727 return thr;
3728}
3729#endif /* USE_THREADS */
3730
93a17b20 3731void
864dbfa3 3732Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3733{
971a9dd3 3734 SV *atsv;
57843af0 3735 line_t oldline = CopLINE(PL_curcop);
312caa8e 3736 CV *cv;
22921e25 3737 STRLEN len;
6224f72b 3738 int ret;
db36c5a1 3739 dJMPENV;
93a17b20 3740
76e3520e 3741 while (AvFILL(paramList) >= 0) {
312caa8e 3742 cv = (CV*)av_shift(paramList);
059a8bb7
JH		 3743 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3744 /* save PL_beginav for compiler */
3745 if (! PL_beginav_save)
3746 PL_beginav_save = newAV();
3747 av_push(PL_beginav_save, (SV*)cv);
3748 } else {
3749 SAVEFREESV(cv);
3750 }
14dd3ad8
GS		 3751#ifdef PERL_FLEXIBLE_EXCEPTIONS
3752 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3753#else
3754 JMPENV_PUSH(ret);
3755#endif
6224f72b 3756 switch (ret) {
312caa8e 3757 case 0:
14dd3ad8
GS		 3758#ifndef PERL_FLEXIBLE_EXCEPTIONS
3759 call_list_body(cv);
3760#endif
971a9dd3 3761 atsv = ERRSV;
312caa8e
CS		 3762 (void)SvPV(atsv, len);
3763 if (len) {
971a9dd3 3764 STRLEN n_a;
312caa8e 3765 PL_curcop = &PL_compiling;
57843af0 3766 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3767 if (paramList == PL_beginav)
3768 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3769 else
4f25aa18
GS		 3770 Perl_sv_catpvf(aTHX_ atsv,
3771 "%s failed--call queue aborted",
7d30b5c4 3772 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3773 : paramList == PL_initav ? "INIT"
3774 : "END");
312caa8e
CS		 3775 while (PL_scopestack_ix > oldscope)
3776 LEAVE;
14dd3ad8 3777 JMPENV_POP;
971a9dd3 3778 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3779 }
85e6fe83 3780 break;
6224f72b 3781 case 1:
f86702cc 3782 STATUS_ALL_FAILURE;
85e6fe83 3783 /* FALL THROUGH */
6224f72b 3784 case 2:
85e6fe83 3785 /* my_exit() was called */
3280af22 3786 while (PL_scopestack_ix > oldscope)
2ae324a7 3787 LEAVE;
84902520 3788 FREETMPS;
3280af22 3789 PL_curstash = PL_defstash;
3280af22 3790 PL_curcop = &PL_compiling;
57843af0 3791 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3792 JMPENV_POP;
cc3604b1 3793 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3794 if (paramList == PL_beginav)
cea2e8a9 3795 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3796 else
4f25aa18 3797 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3798 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3799 : paramList == PL_initav ? "INIT"
3800 : "END");
85e6fe83 3801 }
f86702cc 3802 my_exit_jump();
85e6fe83 3803 /* NOTREACHED */
6224f72b 3804 case 3:
312caa8e
CS		 3805 if (PL_restartop) {
3806 PL_curcop = &PL_compiling;
57843af0 3807 CopLINE_set(PL_curcop, oldline);
312caa8e 3808 JMPENV_JUMP(3);
85e6fe83 3809 }
bf49b057 3810 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3811 FREETMPS;
3812 break;
8990e307 3813 }
14dd3ad8 3814 JMPENV_POP;
93a17b20 3815 }
93a17b20 3816}
93a17b20 3817
14dd3ad8 3818#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3819STATIC void *
14dd3ad8 3820S_vcall_list_body(pTHX_ va_list args)
312caa8e 3821{
312caa8e 3822 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3823 return call_list_body(cv);
3824}
3825#endif
312caa8e 3826
14dd3ad8
GS		 3827STATIC void *
3828S_call_list_body(pTHX_ CV *cv)
3829{
312caa8e 3830 PUSHMARK(PL_stack_sp);
864dbfa3 3831 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3832 return NULL;
3833}
3834
f86702cc 3835void
864dbfa3 3836Perl_my_exit(pTHX_ U32 status)
f86702cc 3837{
8b73bbec 3838 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3839 thr, (unsigned long) status));
f86702cc 3840 switch (status) {
3841 case 0:
3842 STATUS_ALL_SUCCESS;
3843 break;
3844 case 1:
3845 STATUS_ALL_FAILURE;
3846 break;
3847 default:
3848 STATUS_NATIVE_SET(status);
3849 break;
3850 }
3851 my_exit_jump();
3852}
3853
3854void
864dbfa3 3855Perl_my_failure_exit(pTHX)
f86702cc 3856{
3857#ifdef VMS
3858 if (vaxc$errno & 1) {
4fdae800 3859 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3860 STATUS_NATIVE_SET(44);
f86702cc 3861 }
3862 else {
ff0cee69 3863 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3864 STATUS_NATIVE_SET(44);
f86702cc 3865 else
4fdae800 3866 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3867 }
3868#else
9b599b2a 3869 int exitstatus;
f86702cc 3870 if (errno & 255)
3871 STATUS_POSIX_SET(errno);
9b599b2a 3872 else {
ac27b0f5 3873 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3874 if (exitstatus & 255)
3875 STATUS_POSIX_SET(exitstatus);
3876 else
3877 STATUS_POSIX_SET(255);
3878 }
f86702cc 3879#endif
3880 my_exit_jump();
93a17b20
LW		 3881}
3882
76e3520e 3883STATIC void
cea2e8a9 3884S_my_exit_jump(pTHX)
f86702cc 3885{
c09156bb 3886 register PERL_CONTEXT *cx;
f86702cc 3887 I32 gimme;
3888 SV **newsp;
3889
3280af22
NIS		 3890 if (PL_e_script) {
3891 SvREFCNT_dec(PL_e_script);
3892 PL_e_script = Nullsv;
f86702cc 3893 }
3894
3280af22 3895 POPSTACK_TO(PL_mainstack);
f86702cc 3896 if (cxstack_ix >= 0) {
3897 if (cxstack_ix > 0)
3898 dounwind(0);
3280af22 3899 POPBLOCK(cx,PL_curpm);
f86702cc 3900 LEAVE;
3901 }
ff0cee69 3902
6224f72b 3903 JMPENV_JUMP(2);
f86702cc 3904}
873ef191 3905
7a5f8e82 3906#ifdef PERL_OBJECT
873ef191 3907#include "XSUB.h"
51371543 3908#endif
873ef191 3909
0cb96387
GS		 3910static I32
3911read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3912{
3913 char *p, *nl;
3280af22 3914 p = SvPVX(PL_e_script);
873ef191 3915 nl = strchr(p, '\n');
3280af22 3916 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3917 if (nl-p == 0) {
0cb96387 3918 filter_del(read_e_script);
873ef191 3919 return 0;
7dfe3f66 3920 }
873ef191 3921 sv_catpvn(buf_sv, p, nl-p);
3280af22 3922 sv_chop(PL_e_script, nl);
873ef191
GS		 3923 return 1;
3924}
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