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Re: Unicode/EBCDIC
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
0cb96387
GS		 28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS		 43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS		 50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS		 67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS		 73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS		 85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS		 87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS		 94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS		 99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS		 102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS		 104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS		 106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS		 112#endif
113
32e30700
GS		 114 return my_perl;
115}
116#else
954c1994
GS		 117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS		 140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1
MB		 151#ifdef USE_THREADS
152 int i;
153#ifndef FAKE_THREADS
e1f15930 154 struct perl_thread *thr = NULL;
a863c7d1
MB		 155#endif /* FAKE_THREADS */
156#endif /* USE_THREADS */
ba869deb 157
8990e307 158#ifdef MULTIPLICITY
54aff467 159 init_interp();
ac27b0f5 160 PL_perl_destruct_level = 1;
54aff467
GS		 161#else
162 if (PL_perl_destruct_level > 0)
163 init_interp();
164#endif
165
33f46ff6 166 /* Init the real globals (and main thread)? */
3280af22 167 if (!PL_linestr) {
1feb2720 168#ifdef USE_THREADS
533c011a 169 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 170 /*
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
173 */
533c011a
NIS		 174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
ba869deb 178# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 179 MUTEX_INIT(&PL_svref_mutex);
ba869deb 180# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 181
5ff3f7a4 182 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 185
199100c8 186 thr = init_main_thread();
11343788
MB		 187#endif /* USE_THREADS */
188
14dd3ad8 189#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 191#endif
312caa8e 192
2aea9f8a
GS		 193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194
3280af22
NIS		 195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 197
3280af22 198 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 199 /* set read-only and try to insure than we wont see REFCNT==0
200 very often */
201
3280af22
NIS		 202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 204
3280af22
NIS		 205 sv_setpv(&PL_sv_no,PL_No);
206 SvNV(&PL_sv_no);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 209
3280af22
NIS		 210 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvNV(&PL_sv_yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 214 }
79072805 215
76e3520e
GS		 216#ifdef PERL_OBJECT
217 /* TODO: */
6b88bc9c 218 /* PL_sighandlerp = sighandler; */
76e3520e 219#else
cea2e8a9 220 PL_sighandlerp = Perl_sighandler;
76e3520e 221#endif
3280af22 222 PL_pidstatus = newHV();
44a8e56a 223
79072805
LW		 224#ifdef MSDOS
225 /*
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
228 * filehandles.
229 */
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
232#endif
233 }
234
79cb57f6 235 PL_nrs = newSVpvn("\n", 1);
3280af22 236 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 237
cea2e8a9 238 init_stacks();
79072805 239
748a9306 240 init_ids();
3280af22 241 PL_lex_state = LEX_NOTPARSING;
a5f75d66 242
312caa8e 243 JMPENV_BOOTSTRAP;
f86702cc 244 STATUS_ALL_SUCCESS;
245
0672f40e 246 init_i18nl10n(1);
36477c24 247 SET_NUMERIC_STANDARD();
0b5b802d 248
a7cb1f99
GS		 249 {
250 U8 *s;
251 PL_patchlevel = NEWSV(0,4);
155aba94 252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 255 s = (U8*)SvPVX(PL_patchlevel);
3bd709b1
PP		 256 s = uv_to_utf8(s, (UV)(ASCII_TO_NATIVE(PERL_REVISION)));
257 s = uv_to_utf8(s, (UV)(ASCII_TO_NATIVE(PERL_VERSION)));
258 s = uv_to_utf8(s, (UV)(ASCII_TO_NATIVE(PERL_SUBVERSION)));
a7cb1f99
GS		 259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS		 267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 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);
2c2666fc 748 Safefree(PL_bitcount);
ce08f86c 749 Safefree(PL_psig_pend);
6e72f9df 750 nuke_stacks();
3280af22 751 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 752
a0d0e21e 753 DEBUG_P(debprofdump());
11343788 754#ifdef USE_THREADS
5f08fbcd 755 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 756 MUTEX_DESTROY(&PL_sv_mutex);
757 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 758 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 759 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 760 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 761#ifdef EMULATE_ATOMIC_REFCOUNTS
762 MUTEX_DESTROY(&PL_svref_mutex);
763#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 764
8023c3ce 765 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 766 Safefree(SvPVX(PL_thrsv));
767 Safefree(SvANY(PL_thrsv));
768 Safefree(PL_thrsv);
769 PL_thrsv = Nullsv;
8023c3ce 770#endif /* USE_THREADS */
d33b2eba 771
612f20c3
GS		 772 sv_free_arenas();
773
fc36a67e 774 /* As the absolutely last thing, free the non-arena SV for mess() */
775
3280af22 776 if (PL_mess_sv) {
9c63abab
GS		 777 /* it could have accumulated taint magic */
778 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
779 MAGIC* mg;
780 MAGIC* moremagic;
781 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
782 moremagic = mg->mg_moremagic;
783 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
784 Safefree(mg->mg_ptr);
785 Safefree(mg);
786 }
787 }
fc36a67e 788 /* we know that type >= SVt_PV */
155aba94 789 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 790 Safefree(SvPVX(PL_mess_sv));
791 Safefree(SvANY(PL_mess_sv));
792 Safefree(PL_mess_sv);
793 PL_mess_sv = Nullsv;
fc36a67e 794 }
79072805
LW		 795}
796
954c1994
GS		 797/*
798=for apidoc perl_free
799
800Releases a Perl interpreter. See L<perlembed>.
801
802=cut
803*/
804
79072805 805void
0cb96387 806perl_free(pTHXx)
79072805 807{
c5be433b 808#if defined(PERL_OBJECT)
7f0d82f7 809 PerlMem_free(this);
76e3520e 810#else
ce3e5b80
NIS		 811# if defined(WIN32)
812# if defined(PERL_IMPLICIT_SYS)
1c0ca838 813 void *host = w32_internal_host;
ba247512 814 if (PerlProc_lasthost()) {
ce08f86c 815 PerlIO_cleanup();
ba247512 816 }
7f0d82f7 817 PerlMem_free(aTHXx);
1c0ca838 818 win32_delete_internal_host(host);
ce3e5b80 819#else
ce08f86c 820 PerlIO_cleanup();
ce3e5b80
NIS		 821 PerlMem_free(aTHXx);
822#endif
1c0ca838
GS		 823# else
824 PerlMem_free(aTHXx);
825# endif
76e3520e 826#endif
79072805
LW		 827}
828
4b556e6c 829void
864dbfa3 830Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 831{
3280af22
NIS		 832 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
833 PL_exitlist[PL_exitlistlen].fn = fn;
834 PL_exitlist[PL_exitlistlen].ptr = ptr;
835 ++PL_exitlistlen;
4b556e6c
JD		 836}
837
954c1994
GS		 838/*
839=for apidoc perl_parse
840
841Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
842
843=cut
844*/
845
79072805 846int
0cb96387 847perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 848{
6224f72b 849 I32 oldscope;
6224f72b 850 int ret;
db36c5a1 851 dJMPENV;
cea2e8a9
GS		 852#ifdef USE_THREADS
853 dTHX;
854#endif
8d063cd8 855
a687059c
LW		 856#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
857#ifdef IAMSUID
858#undef IAMSUID
cea2e8a9 859 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 860setuid perl scripts securely.\n");
861#endif
862#endif
863
8f1f23e8 864#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 865 _dyld_lookup_and_bind
866 ("__environ", (unsigned long *) &environ_pointer, NULL);
867#endif /* environ */
868
3280af22
NIS		 869 PL_origargv = argv;
870 PL_origargc = argc;
fa6a1c44 871#ifdef USE_ENVIRON_ARRAY
3280af22 872 PL_origenviron = environ;
a0d0e21e
LW		 873#endif
874
3280af22 875 if (PL_do_undump) {
a0d0e21e
LW		 876
877 /* Come here if running an undumped a.out. */
878
3280af22
NIS		 879 PL_origfilename = savepv(argv[0]);
880 PL_do_undump = FALSE;
a0d0e21e 881 cxstack_ix = -1; /* start label stack again */
748a9306 882 init_ids();
a0d0e21e
LW		 883 init_postdump_symbols(argc,argv,env);
884 return 0;
885 }
886
3280af22
NIS		 887 if (PL_main_root) {
888 PL_curpad = AvARRAY(PL_comppad);
889 op_free(PL_main_root);
890 PL_main_root = Nullop;
ff0cee69 891 }
3280af22
NIS		 892 PL_main_start = Nullop;
893 SvREFCNT_dec(PL_main_cv);
894 PL_main_cv = Nullcv;
79072805 895
3280af22
NIS		 896 time(&PL_basetime);
897 oldscope = PL_scopestack_ix;
599cee73 898 PL_dowarn = G_WARN_OFF;
f86702cc 899
14dd3ad8
GS		 900#ifdef PERL_FLEXIBLE_EXCEPTIONS
901 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
902#else
903 JMPENV_PUSH(ret);
904#endif
6224f72b 905 switch (ret) {
312caa8e 906 case 0:
14dd3ad8
GS		 907#ifndef PERL_FLEXIBLE_EXCEPTIONS
908 parse_body(env,xsinit);
909#endif
7d30b5c4
GS		 910 if (PL_checkav)
911 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 912 ret = 0;
913 break;
6224f72b
GS		 914 case 1:
915 STATUS_ALL_FAILURE;
916 /* FALL THROUGH */
917 case 2:
918 /* my_exit() was called */
3280af22 919 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 920 LEAVE;
921 FREETMPS;
3280af22 922 PL_curstash = PL_defstash;
7d30b5c4
GS		 923 if (PL_checkav)
924 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 925 ret = STATUS_NATIVE_EXPORT;
926 break;
6224f72b 927 case 3:
bf49b057 928 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 929 ret = 1;
930 break;
6224f72b 931 }
14dd3ad8
GS		 932 JMPENV_POP;
933 return ret;
934}
935
936#ifdef PERL_FLEXIBLE_EXCEPTIONS
937STATIC void *
938S_vparse_body(pTHX_ va_list args)
939{
940 char **env = va_arg(args, char**);
941 XSINIT_t xsinit = va_arg(args, XSINIT_t);
942
943 return parse_body(env, xsinit);
312caa8e 944}
14dd3ad8 945#endif
312caa8e
CS		 946
947STATIC void *
14dd3ad8 948S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 949{
312caa8e
CS		 950 int argc = PL_origargc;
951 char **argv = PL_origargv;
312caa8e
CS		 952 char *scriptname = NULL;
953 int fdscript = -1;
954 VOL bool dosearch = FALSE;
955 char *validarg = "";
956 AV* comppadlist;
957 register SV *sv;
958 register char *s;
f4c556ac 959 char *cddir = Nullch;
312caa8e 960
3280af22 961 sv_setpvn(PL_linestr,"",0);
79cb57f6 962 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 963 SAVEFREESV(sv);
964 init_main_stash();
54310121 965
6224f72b
GS		 966 for (argc--,argv++; argc > 0; argc--,argv++) {
967 if (argv[0][0] != '-' || !argv[0][1])
968 break;
969#ifdef DOSUID
970 if (*validarg)
971 validarg = " PHOOEY ";
972 else
973 validarg = argv[0];
13281fa4 974#endif
6224f72b
GS		 975 s = argv[0]+1;
976 reswitch:
977 switch (*s) {
729a02f2
GS		 978 case 'C':
979#ifdef WIN32
c0932edc 980 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 981 /* FALL THROUGH */
982#endif
1d5472a9
GS		 983#ifndef PERL_STRICT_CR
984 case '\r':
985#endif
6224f72b
GS		 986 case ' ':
987 case '0':
988 case 'F':
989 case 'a':
990 case 'c':
991 case 'd':
992 case 'D':
993 case 'h':
994 case 'i':
995 case 'l':
996 case 'M':
997 case 'm':
998 case 'n':
999 case 'p':
1000 case 's':
1001 case 'u':
1002 case 'U':
1003 case 'v':
599cee73
PM		 1004 case 'W':
1005 case 'X':
6224f72b 1006 case 'w':
155aba94 1007 if ((s = moreswitches(s)))
6224f72b
GS		 1008 goto reswitch;
1009 break;
33b78306 1010
6224f72b 1011 case 'T':
3280af22 1012 PL_tainting = TRUE;
6224f72b
GS		 1013 s++;
1014 goto reswitch;
f86702cc 1015
6224f72b 1016 case 'e':
bf4acbe4
GS		 1017#ifdef MACOS_TRADITIONAL
1018 /* ignore -e for Dev:Pseudo argument */
1019 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1020 break;
bf4acbe4 1021#endif
3280af22 1022 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1023 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1024 if (!PL_e_script) {
79cb57f6 1025 PL_e_script = newSVpvn("",0);
0cb96387 1026 filter_add(read_e_script, NULL);
6224f72b
GS		 1027 }
1028 if (*++s)
3280af22 1029 sv_catpv(PL_e_script, s);
6224f72b 1030 else if (argv[1]) {
3280af22 1031 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1032 argc--,argv++;
1033 }
1034 else
cea2e8a9 1035 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1036 sv_catpv(PL_e_script, "\n");
6224f72b 1037 break;
afe37c7d 1038
6224f72b
GS		 1039 case 'I': /* -I handled both here and in moreswitches() */
1040 forbid_setid("-I");
1041 if (!*++s && (s=argv[1]) != Nullch) {
1042 argc--,argv++;
1043 }
6224f72b 1044 if (s && *s) {
0df16ed7
GS		 1045 char *p;
1046 STRLEN len = strlen(s);
1047 p = savepvn(s, len);
9c8a64f0 1048 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1049 sv_catpvn(sv, "-I", 2);
1050 sv_catpvn(sv, p, len);
1051 sv_catpvn(sv, " ", 1);
6224f72b 1052 Safefree(p);
0df16ed7
GS		 1053 }
1054 else
a67e862a 1055 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1056 break;
1057 case 'P':
1058 forbid_setid("-P");
3280af22 1059 PL_preprocess = TRUE;
6224f72b
GS		 1060 s++;
1061 goto reswitch;
1062 case 'S':
1063 forbid_setid("-S");
1064 dosearch = TRUE;
1065 s++;
1066 goto reswitch;
1067 case 'V':
3280af22
NIS		 1068 if (!PL_preambleav)
1069 PL_preambleav = newAV();
1070 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1071 if (*++s != ':') {
3280af22 1072 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1073#ifdef VMS
6b88bc9c 1074 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1075#else
3280af22 1076 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1077#endif
3280af22 1078 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1079# ifdef DEBUGGING
3280af22 1080 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1081# endif
6224f72b 1082# ifdef MULTIPLICITY
8f872242 1083 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1084# endif
b363f7ed
GS		 1085# ifdef USE_THREADS
1086 sv_catpv(PL_Sv," USE_THREADS");
1087# endif
ac5e8965
JH		 1088# ifdef USE_ITHREADS
1089 sv_catpv(PL_Sv," USE_ITHREADS");
1090# endif
10cc9d2a
JH		 1091# ifdef USE_64_BIT_INT
1092 sv_catpv(PL_Sv," USE_64_BIT_INT");
1093# endif
1094# ifdef USE_64_BIT_ALL
1095 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1096# endif
1097# ifdef USE_LONG_DOUBLE
1098 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1099# endif
53430762
JH		 1100# ifdef USE_LARGE_FILES
1101 sv_catpv(PL_Sv," USE_LARGE_FILES");
1102# endif
ac5e8965
JH		 1103# ifdef USE_SOCKS
1104 sv_catpv(PL_Sv," USE_SOCKS");
1105# endif
b363f7ed
GS		 1106# ifdef PERL_OBJECT
1107 sv_catpv(PL_Sv," PERL_OBJECT");
1108# endif
1109# ifdef PERL_IMPLICIT_CONTEXT
1110 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1111# endif
1112# ifdef PERL_IMPLICIT_SYS
1113 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1114# endif
3280af22 1115 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1116
6224f72b
GS		 1117#if defined(LOCAL_PATCH_COUNT)
1118 if (LOCAL_PATCH_COUNT > 0) {
1119 int i;
3280af22 1120 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1121 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1122 if (PL_localpatches[i])
cea2e8a9 1123 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1124 }
1125 }
1126#endif
cea2e8a9 1127 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1128#ifdef __DATE__
1129# ifdef __TIME__
cea2e8a9 1130 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1131# else
cea2e8a9 1132 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1133# endif
1134#endif
3280af22 1135 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1136$\"=\"\\n \"; \
1137@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1138print \" \\%ENV:\\n @env\\n\" if @env; \
1139print \" \\@INC:\\n @INC\\n\";");
1140 }
1141 else {
3280af22
NIS		 1142 PL_Sv = newSVpv("config_vars(qw(",0);
1143 sv_catpv(PL_Sv, ++s);
1144 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1145 s += strlen(s);
1146 }
3280af22 1147 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1148 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1149 goto reswitch;
1150 case 'x':
3280af22 1151 PL_doextract = TRUE;
6224f72b
GS		 1152 s++;
1153 if (*s)
f4c556ac 1154 cddir = s;
6224f72b
GS		 1155 break;
1156 case 0:
1157 break;
1158 case '-':
1159 if (!*++s || isSPACE(*s)) {
1160 argc--,argv++;
1161 goto switch_end;
1162 }
1163 /* catch use of gnu style long options */
1164 if (strEQ(s, "version")) {
1165 s = "v";
1166 goto reswitch;
1167 }
1168 if (strEQ(s, "help")) {
1169 s = "h";
1170 goto reswitch;
1171 }
1172 s--;
1173 /* FALL THROUGH */
1174 default:
cea2e8a9 1175 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1176 }
1177 }
6224f72b 1178 switch_end:
54310121 1179
f675dbe5
CB		 1180 if (
1181#ifndef SECURE_INTERNAL_GETENV
1182 !PL_tainting &&
1183#endif
0df16ed7
GS		 1184 (s = PerlEnv_getenv("PERL5OPT")))
1185 {
74288ac8
GS		 1186 while (isSPACE(*s))
1187 s++;
1188 if (*s == '-' && *(s+1) == 'T')
1189 PL_tainting = TRUE;
1190 else {
1191 while (s && *s) {
4ea8f8fb 1192 char *d;
74288ac8
GS		 1193 while (isSPACE(*s))
1194 s++;
1195 if (*s == '-') {
1196 s++;
1197 if (isSPACE(*s))
1198 continue;
1199 }
4ea8f8fb 1200 d = s;
74288ac8
GS		 1201 if (!*s)
1202 break;
1203 if (!strchr("DIMUdmw", *s))
cea2e8a9 1204 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1205 while (++s && *s) {
1206 if (isSPACE(*s)) {
1207 *s++ = '\0';
1208 break;
1209 }
1210 }
1211 moreswitches(d);
6224f72b 1212 }
6224f72b
GS		 1213 }
1214 }
a0d0e21e 1215
6224f72b
GS		 1216 if (!scriptname)
1217 scriptname = argv[0];
3280af22 1218 if (PL_e_script) {
6224f72b
GS		 1219 argc++,argv--;
1220 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1221 }
1222 else if (scriptname == Nullch) {
1223#ifdef MSDOS
1224 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1225 moreswitches("h");
1226#endif
1227 scriptname = "-";
1228 }
1229
1230 init_perllib();
1231
1232 open_script(scriptname,dosearch,sv,&fdscript);
1233
1234 validate_suid(validarg, scriptname,fdscript);
1235
64ca3a65 1236#ifndef PERL_MICRO
0b5b802d
GS		 1237#if defined(SIGCHLD) || defined(SIGCLD)
1238 {
1239#ifndef SIGCHLD
1240# define SIGCHLD SIGCLD
1241#endif
1242 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1243 if (sigstate == SIG_IGN) {
1244 if (ckWARN(WARN_SIGNAL))
1245 Perl_warner(aTHX_ WARN_SIGNAL,
1246 "Can't ignore signal CHLD, forcing to default");
1247 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1248 }
1249 }
1250#endif
64ca3a65 1251#endif
0b5b802d 1252
bf4acbe4
GS		 1253#ifdef MACOS_TRADITIONAL
1254 if (PL_doextract || gMacPerl_AlwaysExtract) {
1255#else
f4c556ac 1256 if (PL_doextract) {
bf4acbe4 1257#endif
6224f72b 1258 find_beginning();
f4c556ac
GS		 1259 if (cddir && PerlDir_chdir(cddir) < 0)
1260 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1261
1262 }
6224f72b 1263
3280af22
NIS		 1264 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1265 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1266 CvUNIQUE_on(PL_compcv);
1267
1268 PL_comppad = newAV();
1269 av_push(PL_comppad, Nullsv);
1270 PL_curpad = AvARRAY(PL_comppad);
1271 PL_comppad_name = newAV();
1272 PL_comppad_name_fill = 0;
1273 PL_min_intro_pending = 0;
1274 PL_padix = 0;
6224f72b 1275#ifdef USE_THREADS
79cb57f6 1276 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1277 PL_curpad[0] = (SV*)newAV();
1278 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1279 CvOWNER(PL_compcv) = 0;
1280 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1281 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1282#endif /* USE_THREADS */
1283
1284 comppadlist = newAV();
1285 AvREAL_off(comppadlist);
3280af22
NIS		 1286 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1287 av_store(comppadlist, 1, (SV*)PL_comppad);
1288 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1289
1290 boot_core_UNIVERSAL();
9a34ef1d 1291#ifndef PERL_MICRO
09bef843 1292 boot_core_xsutils();
9a34ef1d 1293#endif
6224f72b
GS		 1294
1295 if (xsinit)
0cb96387 1296 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1297#ifndef PERL_MICRO
ed79a026 1298#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1299 init_os_extras();
6224f72b 1300#endif
64ca3a65 1301#endif
6224f72b 1302
29209bc5 1303#ifdef USE_SOCKS
1b9c9cf5
DH		 1304# ifdef HAS_SOCKS5_INIT
1305 socks5_init(argv[0]);
1306# else
29209bc5 1307 SOCKSinit(argv[0]);
1b9c9cf5 1308# endif
ac27b0f5 1309#endif
29209bc5 1310
6224f72b
GS		 1311 init_predump_symbols();
1312 /* init_postdump_symbols not currently designed to be called */
1313 /* more than once (ENV isn't cleared first, for example) */
1314 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1315 if (!PL_do_undump)
6224f72b
GS		 1316 init_postdump_symbols(argc,argv,env);
1317
1318 init_lexer();
1319
1320 /* now parse the script */
1321
1322 SETERRNO(0,SS$_NORMAL);
3280af22 1323 PL_error_count = 0;
bf4acbe4
GS		 1324#ifdef MACOS_TRADITIONAL
1325 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1326 if (PL_minus_c)
1327 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1328 else {
1329 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1330 MacPerl_MPWFileName(PL_origfilename));
1331 }
1332 }
1333#else
3280af22
NIS		 1334 if (yyparse() || PL_error_count) {
1335 if (PL_minus_c)
cea2e8a9 1336 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1337 else {
cea2e8a9 1338 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1339 PL_origfilename);
6224f72b
GS		 1340 }
1341 }
bf4acbe4 1342#endif
57843af0 1343 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1344 PL_curstash = PL_defstash;
1345 PL_preprocess = FALSE;
1346 if (PL_e_script) {
1347 SvREFCNT_dec(PL_e_script);
1348 PL_e_script = Nullsv;
6224f72b
GS		 1349 }
1350
1351 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1352 SvREFCNT_dec(PL_rs);
1353 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1354 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1355 if (PL_do_undump)
6224f72b
GS		 1356 my_unexec();
1357
57843af0
GS		 1358 if (isWARN_ONCE) {
1359 SAVECOPFILE(PL_curcop);
1360 SAVECOPLINE(PL_curcop);
3280af22 1361 gv_check(PL_defstash);
57843af0 1362 }
6224f72b
GS		 1363
1364 LEAVE;
1365 FREETMPS;
1366
1367#ifdef MYMALLOC
1368 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1369 dump_mstats("after compilation:");
1370#endif
1371
1372 ENTER;
3280af22 1373 PL_restartop = 0;
312caa8e 1374 return NULL;
6224f72b
GS		 1375}
1376
954c1994
GS		 1377/*
1378=for apidoc perl_run
1379
1380Tells a Perl interpreter to run. See L<perlembed>.
1381
1382=cut
1383*/
1384
6224f72b 1385int
0cb96387 1386perl_run(pTHXx)
6224f72b 1387{
6224f72b 1388 I32 oldscope;
14dd3ad8 1389 int ret = 0;
db36c5a1 1390 dJMPENV;
cea2e8a9
GS		 1391#ifdef USE_THREADS
1392 dTHX;
1393#endif
6224f72b 1394
3280af22 1395 oldscope = PL_scopestack_ix;
6224f72b 1396
14dd3ad8 1397#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1398 redo_body:
14dd3ad8
GS		 1399 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1400#else
1401 JMPENV_PUSH(ret);
1402#endif
6224f72b
GS		 1403 switch (ret) {
1404 case 1:
1405 cxstack_ix = -1; /* start context stack again */
312caa8e 1406 goto redo_body;
14dd3ad8
GS		 1407 case 0: /* normal completion */
1408#ifndef PERL_FLEXIBLE_EXCEPTIONS
1409 redo_body:
1410 run_body(oldscope);
1411#endif
1412 /* FALL THROUGH */
1413 case 2: /* my_exit() */
3280af22 1414 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1415 LEAVE;
1416 FREETMPS;
3280af22 1417 PL_curstash = PL_defstash;
865be832 1418 if (PL_endav && !PL_minus_c)
3280af22 1419 call_list(oldscope, PL_endav);
6224f72b
GS		 1420#ifdef MYMALLOC
1421 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1422 dump_mstats("after execution: ");
1423#endif
14dd3ad8
GS		 1424 ret = STATUS_NATIVE_EXPORT;
1425 break;
6224f72b 1426 case 3:
312caa8e
CS		 1427 if (PL_restartop) {
1428 POPSTACK_TO(PL_mainstack);
1429 goto redo_body;
6224f72b 1430 }
bf49b057 1431 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1432 FREETMPS;
14dd3ad8
GS		 1433 ret = 1;
1434 break;
6224f72b
GS		 1435 }
1436
14dd3ad8
GS		 1437 JMPENV_POP;
1438 return ret;
312caa8e
CS		 1439}
1440
14dd3ad8 1441#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1442STATIC void *
14dd3ad8 1443S_vrun_body(pTHX_ va_list args)
312caa8e 1444{
312caa8e
CS		 1445 I32 oldscope = va_arg(args, I32);
1446
14dd3ad8
GS		 1447 return run_body(oldscope);
1448}
1449#endif
1450
1451
1452STATIC void *
1453S_run_body(pTHX_ I32 oldscope)
1454{
6224f72b 1455 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1456 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1457
3280af22 1458 if (!PL_restartop) {
6224f72b
GS		 1459 DEBUG_x(dump_all());
1460 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1461 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1462 PTR2UV(thr)));
6224f72b 1463
3280af22 1464 if (PL_minus_c) {
bf4acbe4
GS		 1465#ifdef MACOS_TRADITIONAL
1466 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1467#else
bf49b057 1468 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1469#endif
6224f72b
GS		 1470 my_exit(0);
1471 }
3280af22 1472 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1473 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1474 if (PL_initav)
1475 call_list(oldscope, PL_initav);
6224f72b
GS		 1476 }
1477
1478 /* do it */
1479
3280af22 1480 if (PL_restartop) {
533c011a 1481 PL_op = PL_restartop;
3280af22 1482 PL_restartop = 0;
cea2e8a9 1483 CALLRUNOPS(aTHX);
6224f72b 1484 }
3280af22
NIS		 1485 else if (PL_main_start) {
1486 CvDEPTH(PL_main_cv) = 1;
533c011a 1487 PL_op = PL_main_start;
cea2e8a9 1488 CALLRUNOPS(aTHX);
6224f72b
GS		 1489 }
1490
f6b3007c
JH		 1491 my_exit(0);
1492 /* NOTREACHED */
312caa8e 1493 return NULL;
6224f72b
GS		 1494}
1495
954c1994
GS		 1496/*
1497=for apidoc p||get_sv
1498
1499Returns the SV of the specified Perl scalar. If C<create> is set and the
1500Perl variable does not exist then it will be created. If C<create> is not
1501set and the variable does not exist then NULL is returned.
1502
1503=cut
1504*/
1505
6224f72b 1506SV*
864dbfa3 1507Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1508{
1509 GV *gv;
1510#ifdef USE_THREADS
1511 if (name[1] == '\0' && !isALPHA(name[0])) {
1512 PADOFFSET tmp = find_threadsv(name);
411caa50 1513 if (tmp != NOT_IN_PAD)
6224f72b 1514 return THREADSV(tmp);
6224f72b
GS		 1515 }
1516#endif /* USE_THREADS */
1517 gv = gv_fetchpv(name, create, SVt_PV);
1518 if (gv)
1519 return GvSV(gv);
1520 return Nullsv;
1521}
1522
954c1994
GS		 1523/*
1524=for apidoc p||get_av
1525
1526Returns the AV of the specified Perl array. If C<create> is set and the
1527Perl variable does not exist then it will be created. If C<create> is not
1528set and the variable does not exist then NULL is returned.
1529
1530=cut
1531*/
1532
6224f72b 1533AV*
864dbfa3 1534Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1535{
1536 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1537 if (create)
1538 return GvAVn(gv);
1539 if (gv)
1540 return GvAV(gv);
1541 return Nullav;
1542}
1543
954c1994
GS		 1544/*
1545=for apidoc p||get_hv
1546
1547Returns the HV of the specified Perl hash. If C<create> is set and the
1548Perl variable does not exist then it will be created. If C<create> is not
1549set and the variable does not exist then NULL is returned.
1550
1551=cut
1552*/
1553
6224f72b 1554HV*
864dbfa3 1555Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1556{
a0d0e21e
LW		 1557 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1558 if (create)
1559 return GvHVn(gv);
1560 if (gv)
1561 return GvHV(gv);
1562 return Nullhv;
1563}
1564
954c1994
GS		 1565/*
1566=for apidoc p||get_cv
1567
1568Returns the CV of the specified Perl subroutine. If C<create> is set and
1569the Perl subroutine does not exist then it will be declared (which has the
1570same effect as saying C<sub name;>). If C<create> is not set and the
1571subroutine does not exist then NULL is returned.
1572
1573=cut
1574*/
1575
a0d0e21e 1576CV*
864dbfa3 1577Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1578{
1579 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1580 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1581 /* XXX this is probably not what they think they're getting.
1582 * It has the same effect as "sub name;", i.e. just a forward
1583 * declaration! */
8ebc5c01 1584 if (create && !GvCVu(gv))
774d564b 1585 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1586 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1587 Nullop,
a0d0e21e
LW		 1588 Nullop);
1589 if (gv)
8ebc5c01 1590 return GvCVu(gv);
a0d0e21e
LW		 1591 return Nullcv;
1592}
1593
79072805
LW		 1594/* Be sure to refetch the stack pointer after calling these routines. */
1595
954c1994
GS		 1596/*
1597=for apidoc p||call_argv
1598
1599Performs a callback to the specified Perl sub. See L<perlcall>.
1600
1601=cut
1602*/
1603
a0d0e21e 1604I32
864dbfa3 1605Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1606
8ac85365
NIS		 1607 /* See G_* flags in cop.h */
1608 /* null terminated arg list */
8990e307 1609{
a0d0e21e 1610 dSP;
8990e307 1611
924508f0 1612 PUSHMARK(SP);
a0d0e21e 1613 if (argv) {
8990e307 1614 while (*argv) {
a0d0e21e 1615 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1616 argv++;
1617 }
a0d0e21e 1618 PUTBACK;
8990e307 1619 }
864dbfa3 1620 return call_pv(sub_name, flags);
8990e307
LW		 1621}
1622
954c1994
GS		 1623/*
1624=for apidoc p||call_pv
1625
1626Performs a callback to the specified Perl sub. See L<perlcall>.
1627
1628=cut
1629*/
1630
a0d0e21e 1631I32
864dbfa3 1632Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1633 /* name of the subroutine */
1634 /* See G_* flags in cop.h */
a0d0e21e 1635{
864dbfa3 1636 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1637}
1638
954c1994
GS		 1639/*
1640=for apidoc p||call_method
1641
1642Performs a callback to the specified Perl method. The blessed object must
1643be on the stack. See L<perlcall>.
1644
1645=cut
1646*/
1647
a0d0e21e 1648I32
864dbfa3 1649Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1650 /* name of the subroutine */
1651 /* See G_* flags in cop.h */
a0d0e21e 1652{
968b3946 1653 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1654}
1655
1656/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1657/*
1658=for apidoc p||call_sv
1659
1660Performs a callback to the Perl sub whose name is in the SV. See
1661L<perlcall>.
1662
1663=cut
1664*/
1665
a0d0e21e 1666I32
864dbfa3 1667Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1668 /* See G_* flags in cop.h */
a0d0e21e 1669{
924508f0 1670 dSP;
a0d0e21e 1671 LOGOP myop; /* fake syntax tree node */
968b3946 1672 UNOP method_op;
aa689395 1673 I32 oldmark;
a0d0e21e 1674 I32 retval;
a0d0e21e 1675 I32 oldscope;
54310121 1676 bool oldcatch = CATCH_GET;
6224f72b 1677 int ret;
533c011a 1678 OP* oldop = PL_op;
db36c5a1 1679 dJMPENV;
1e422769 1680
a0d0e21e
LW		 1681 if (flags & G_DISCARD) {
1682 ENTER;
1683 SAVETMPS;
1684 }
1685
aa689395 1686 Zero(&myop, 1, LOGOP);
54310121 1687 myop.op_next = Nullop;
f51d4af5 1688 if (!(flags & G_NOARGS))
aa689395 1689 myop.op_flags |= OPf_STACKED;
54310121 1690 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1691 (flags & G_ARRAY) ? OPf_WANT_LIST :
1692 OPf_WANT_SCALAR);
462e5cf6 1693 SAVEOP();
533c011a 1694 PL_op = (OP*)&myop;
aa689395 1695
3280af22
NIS		 1696 EXTEND(PL_stack_sp, 1);
1697 *++PL_stack_sp = sv;
aa689395 1698 oldmark = TOPMARK;
3280af22 1699 oldscope = PL_scopestack_ix;
a0d0e21e 1700
3280af22 1701 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1702 /* Handle first BEGIN of -d. */
3280af22 1703 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1704 /* Try harder, since this may have been a sighandler, thus
1705 * curstash may be meaningless. */
3280af22 1706 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1707 && !(flags & G_NODEBUG))
533c011a 1708 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1709
968b3946
GS		 1710 if (flags & G_METHOD) {
1711 Zero(&method_op, 1, UNOP);
1712 method_op.op_next = PL_op;
1713 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1714 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1715 PL_op = (OP*)&method_op;
968b3946
GS		 1716 }
1717
312caa8e 1718 if (!(flags & G_EVAL)) {
0cdb2077 1719 CATCH_SET(TRUE);
14dd3ad8 1720 call_body((OP*)&myop, FALSE);
312caa8e 1721 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1722 CATCH_SET(oldcatch);
312caa8e
CS		 1723 }
1724 else {
d78bda3d 1725 myop.op_other = (OP*)&myop;
3280af22 1726 PL_markstack_ptr--;
4633a7c4
LW		 1727 /* we're trying to emulate pp_entertry() here */
1728 {
c09156bb 1729 register PERL_CONTEXT *cx;
54310121 1730 I32 gimme = GIMME_V;
ac27b0f5 1731
4633a7c4
LW		 1732 ENTER;
1733 SAVETMPS;
ac27b0f5 1734
968b3946 1735 push_return(Nullop);
1d76a5c3 1736 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1737 PUSHEVAL(cx, 0, 0);
533c011a 1738 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1739
faef0170 1740 PL_in_eval = EVAL_INEVAL;
4633a7c4 1741 if (flags & G_KEEPERR)
faef0170 1742 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1743 else
38a03e6e 1744 sv_setpv(ERRSV,"");
4633a7c4 1745 }
3280af22 1746 PL_markstack_ptr++;
a0d0e21e 1747
14dd3ad8
GS		 1748#ifdef PERL_FLEXIBLE_EXCEPTIONS
1749 redo_body:
1750 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1751 (OP*)&myop, FALSE);
14dd3ad8
GS		 1752#else
1753 JMPENV_PUSH(ret);
1754#endif
6224f72b
GS		 1755 switch (ret) {
1756 case 0:
14dd3ad8
GS		 1757#ifndef PERL_FLEXIBLE_EXCEPTIONS
1758 redo_body:
1759 call_body((OP*)&myop, FALSE);
1760#endif
312caa8e
CS		 1761 retval = PL_stack_sp - (PL_stack_base + oldmark);
1762 if (!(flags & G_KEEPERR))
1763 sv_setpv(ERRSV,"");
a0d0e21e 1764 break;
6224f72b 1765 case 1:
f86702cc 1766 STATUS_ALL_FAILURE;
a0d0e21e 1767 /* FALL THROUGH */
6224f72b 1768 case 2:
a0d0e21e 1769 /* my_exit() was called */
3280af22 1770 PL_curstash = PL_defstash;
a0d0e21e 1771 FREETMPS;
14dd3ad8 1772 JMPENV_POP;
cc3604b1 1773 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1774 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1775 my_exit_jump();
a0d0e21e 1776 /* NOTREACHED */
6224f72b 1777 case 3:
3280af22 1778 if (PL_restartop) {
533c011a 1779 PL_op = PL_restartop;
3280af22 1780 PL_restartop = 0;
312caa8e 1781 goto redo_body;
a0d0e21e 1782 }
3280af22 1783 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1784 if (flags & G_ARRAY)
1785 retval = 0;
1786 else {
1787 retval = 1;
3280af22 1788 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1789 }
312caa8e 1790 break;
a0d0e21e 1791 }
a0d0e21e 1792
3280af22 1793 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1794 SV **newsp;
1795 PMOP *newpm;
1796 I32 gimme;
c09156bb 1797 register PERL_CONTEXT *cx;
a0a2876f
LW		 1798 I32 optype;
1799
1800 POPBLOCK(cx,newpm);
1801 POPEVAL(cx);
1802 pop_return();
3280af22 1803 PL_curpm = newpm;
a0a2876f 1804 LEAVE;
a0d0e21e 1805 }
14dd3ad8 1806 JMPENV_POP;
a0d0e21e 1807 }
1e422769 1808
a0d0e21e 1809 if (flags & G_DISCARD) {
3280af22 1810 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1811 retval = 0;
1812 FREETMPS;
1813 LEAVE;
1814 }
533c011a 1815 PL_op = oldop;
a0d0e21e
LW		 1816 return retval;
1817}
1818
14dd3ad8 1819#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1820STATIC void *
14dd3ad8 1821S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1822{
1823 OP *myop = va_arg(args, OP*);
1824 int is_eval = va_arg(args, int);
1825
14dd3ad8 1826 call_body(myop, is_eval);
312caa8e
CS		 1827 return NULL;
1828}
14dd3ad8 1829#endif
312caa8e
CS		 1830
1831STATIC void
14dd3ad8 1832S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1833{
312caa8e
CS		 1834 if (PL_op == myop) {
1835 if (is_eval)
f807eda9 1836 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1837 else
f807eda9 1838 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1839 }
1840 if (PL_op)
cea2e8a9 1841 CALLRUNOPS(aTHX);
312caa8e
CS		 1842}
1843
6e72f9df 1844/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1845
954c1994
GS		 1846/*
1847=for apidoc p||eval_sv
1848
1849Tells Perl to C<eval> the string in the SV.
1850
1851=cut
1852*/
1853
a0d0e21e 1854I32
864dbfa3 1855Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1856
8ac85365 1857 /* See G_* flags in cop.h */
a0d0e21e 1858{
924508f0 1859 dSP;
a0d0e21e 1860 UNOP myop; /* fake syntax tree node */
3280af22 1861 I32 oldmark = SP - PL_stack_base;
4633a7c4 1862 I32 retval;
4633a7c4 1863 I32 oldscope;
6224f72b 1864 int ret;
533c011a 1865 OP* oldop = PL_op;
db36c5a1 1866 dJMPENV;
84902520 1867
4633a7c4
LW		 1868 if (flags & G_DISCARD) {
1869 ENTER;
1870 SAVETMPS;
1871 }
1872
462e5cf6 1873 SAVEOP();
533c011a
NIS		 1874 PL_op = (OP*)&myop;
1875 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1876 EXTEND(PL_stack_sp, 1);
1877 *++PL_stack_sp = sv;
1878 oldscope = PL_scopestack_ix;
79072805 1879
4633a7c4
LW		 1880 if (!(flags & G_NOARGS))
1881 myop.op_flags = OPf_STACKED;
79072805 1882 myop.op_next = Nullop;
6e72f9df 1883 myop.op_type = OP_ENTEREVAL;
54310121 1884 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1885 (flags & G_ARRAY) ? OPf_WANT_LIST :
1886 OPf_WANT_SCALAR);
6e72f9df 1887 if (flags & G_KEEPERR)
1888 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1889
14dd3ad8 1890#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1891 redo_body:
14dd3ad8 1892 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1893 (OP*)&myop, TRUE);
14dd3ad8
GS		 1894#else
1895 JMPENV_PUSH(ret);
1896#endif
6224f72b
GS		 1897 switch (ret) {
1898 case 0:
14dd3ad8
GS		 1899#ifndef PERL_FLEXIBLE_EXCEPTIONS
1900 redo_body:
1901 call_body((OP*)&myop,TRUE);
1902#endif
312caa8e
CS		 1903 retval = PL_stack_sp - (PL_stack_base + oldmark);
1904 if (!(flags & G_KEEPERR))
1905 sv_setpv(ERRSV,"");
4633a7c4 1906 break;
6224f72b 1907 case 1:
f86702cc 1908 STATUS_ALL_FAILURE;
4633a7c4 1909 /* FALL THROUGH */
6224f72b 1910 case 2:
4633a7c4 1911 /* my_exit() was called */
3280af22 1912 PL_curstash = PL_defstash;
4633a7c4 1913 FREETMPS;
14dd3ad8 1914 JMPENV_POP;
cc3604b1 1915 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1916 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1917 my_exit_jump();
4633a7c4 1918 /* NOTREACHED */
6224f72b 1919 case 3:
3280af22 1920 if (PL_restartop) {
533c011a 1921 PL_op = PL_restartop;
3280af22 1922 PL_restartop = 0;
312caa8e 1923 goto redo_body;
4633a7c4 1924 }
3280af22 1925 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1926 if (flags & G_ARRAY)
1927 retval = 0;
1928 else {
1929 retval = 1;
3280af22 1930 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1931 }
312caa8e 1932 break;
4633a7c4
LW		 1933 }
1934
14dd3ad8 1935 JMPENV_POP;
4633a7c4 1936 if (flags & G_DISCARD) {
3280af22 1937 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1938 retval = 0;
1939 FREETMPS;
1940 LEAVE;
1941 }
533c011a 1942 PL_op = oldop;
4633a7c4
LW		 1943 return retval;
1944}
1945
954c1994
GS		 1946/*
1947=for apidoc p||eval_pv
1948
1949Tells Perl to C<eval> the given string and return an SV* result.
1950
1951=cut
1952*/
1953
137443ea 1954SV*
864dbfa3 1955Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1956{
1957 dSP;
1958 SV* sv = newSVpv(p, 0);
1959
864dbfa3 1960 eval_sv(sv, G_SCALAR);
137443ea 1961 SvREFCNT_dec(sv);
1962
1963 SPAGAIN;
1964 sv = POPs;
1965 PUTBACK;
1966
2d8e6c8d
GS		 1967 if (croak_on_error && SvTRUE(ERRSV)) {
1968 STRLEN n_a;
cea2e8a9 1969 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1970 }
137443ea 1971
1972 return sv;
1973}
1974
4633a7c4
LW		 1975/* Require a module. */
1976
954c1994
GS		 1977/*
1978=for apidoc p||require_pv
1979
1980Tells Perl to C<require> a module.
1981
1982=cut
1983*/
1984
4633a7c4 1985void
864dbfa3 1986Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1987{
d3acc0f7
JP		 1988 SV* sv;
1989 dSP;
e788e7d3 1990 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 1991 PUTBACK;
1992 sv = sv_newmortal();
4633a7c4
LW		 1993 sv_setpv(sv, "require '");
1994 sv_catpv(sv, pv);
1995 sv_catpv(sv, "'");
864dbfa3 1996 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 1997 SPAGAIN;
1998 POPSTACK;
79072805
LW		 1999}
2000
79072805 2001void
864dbfa3 2002Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2003{
2004 register GV *gv;
2005
155aba94 2006 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW		 2007 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
2008}
2009
76e3520e 2010STATIC void
cea2e8a9 2011S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2012{
ab821d7f 2013 /* This message really ought to be max 23 lines.
2014 * Removed -h because the user already knows that opton. Others? */
fb73857a 2015
76e3520e 2016 static char *usage_msg[] = {
fb73857a 2017"-0[octal] specify record separator (\\0, if no argument)",
2018"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2019"-C enable native wide character system interfaces",
1950ee41 2020"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2021"-d[:debugger] run program under debugger",
2022"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2023"-e 'command' one line of program (several -e's allowed, omit programfile)",
2024"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2025"-i[extension] edit <> files in place (makes backup if extension supplied)",
2026"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2027"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2028"-[mM][-]module execute `use/no module...' before executing program",
2029"-n assume 'while (<>) { ... }' loop around program",
2030"-p assume loop like -n but print line also, like sed",
2031"-P run program through C preprocessor before compilation",
2032"-s enable rudimentary parsing for switches after programfile",
2033"-S look for programfile using PATH environment variable",
2034"-T enable tainting checks",
2035"-u dump core after parsing program",
fb73857a 2036"-U allow unsafe operations",
aac3bd0d
GS		 2037"-v print version, subversion (includes VERY IMPORTANT perl info)",
2038"-V[:variable] print configuration summary (or a single Config.pm variable)",
2039"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2040"-W enable all warnings",
2041"-X disable all warnings",
fb73857a 2042"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2043"\n",
2044NULL
2045};
76e3520e 2046 char **p = usage_msg;
fb73857a 2047
b0e47665
GS		 2048 PerlIO_printf(PerlIO_stdout(),
2049 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2050 name);
fb73857a 2051 while (*p)
b0e47665 2052 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2053}
2054
79072805
LW		 2055/* This routine handles any switches that can be given during run */
2056
2057char *
864dbfa3 2058Perl_moreswitches(pTHX_ char *s)
79072805 2059{
ba210ebe 2060 STRLEN numlen;
c07a80fd 2061 U32 rschar;
79072805
LW		 2062
2063 switch (*s) {
2064 case '0':
a863c7d1 2065 {
b21ed0a9 2066 numlen = 0; /* disallow underscores */
dff6d3cd 2067 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2068 SvREFCNT_dec(PL_nrs);
c07a80fd 2069 if (rschar & ~((U8)~0))
3280af22 2070 PL_nrs = &PL_sv_undef;
c07a80fd 2071 else if (!rschar && numlen >= 2)
79cb57f6 2072 PL_nrs = newSVpvn("", 0);
c07a80fd 2073 else {
2074 char ch = rschar;
79cb57f6 2075 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2076 }
2077 return s + numlen;
a863c7d1 2078 }
46487f74
GS		 2079 case 'C':
2080 PL_widesyscalls = TRUE;
2081 s++;
2082 return s;
2304df62 2083 case 'F':
3280af22
NIS		 2084 PL_minus_F = TRUE;
2085 PL_splitstr = savepv(s + 1);
2304df62
AD		 2086 s += strlen(s);
2087 return s;
79072805 2088 case 'a':
3280af22 2089 PL_minus_a = TRUE;
79072805
LW		 2090 s++;
2091 return s;
2092 case 'c':
3280af22 2093 PL_minus_c = TRUE;
79072805
LW		 2094 s++;
2095 return s;
2096 case 'd':
bbce6d69 2097 forbid_setid("-d");
4633a7c4 2098 s++;
70c94a19
RR		 2099 /* The following permits -d:Mod to accepts arguments following an =
2100 in the fashion that -MSome::Mod does. */
2101 if (*s == ':' || *s == '=') {
2102 char *start;
2103 SV *sv;
2104 sv = newSVpv("use Devel::", 0);
2105 start = ++s;
2106 /* We now allow -d:Module=Foo,Bar */
2107 while(isALNUM(*s) || *s==':') ++s;
2108 if (*s != '=')
2109 sv_catpv(sv, start);
2110 else {
2111 sv_catpvn(sv, start, s-start);
2112 sv_catpv(sv, " split(/,/,q{");
2113 sv_catpv(sv, ++s);
2114 sv_catpv(sv, "})");
2115 }
4633a7c4 2116 s += strlen(s);
70c94a19 2117 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2118 }
ed094faf 2119 if (!PL_perldb) {
3280af22 2120 PL_perldb = PERLDB_ALL;
a0d0e21e 2121 init_debugger();
ed094faf 2122 }
79072805
LW		 2123 return s;
2124 case 'D':
0453d815 2125 {
79072805 2126#ifdef DEBUGGING
bbce6d69 2127 forbid_setid("-D");
79072805 2128 if (isALPHA(s[1])) {
607df283 2129 static char debopts[] = "psltocPmfrxuLHXDST";
79072805
LW		 2130 char *d;
2131
93a17b20 2132 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2133 PL_debug |= 1 << (d - debopts);
79072805
LW		 2134 }
2135 else {
3280af22 2136 PL_debug = atoi(s+1);
79072805
LW		 2137 for (s++; isDIGIT(*s); s++) ;
2138 }
3280af22 2139 PL_debug |= 0x80000000;
79072805 2140#else
0453d815
PM		 2141 if (ckWARN_d(WARN_DEBUGGING))
2142 Perl_warner(aTHX_ WARN_DEBUGGING,
2143 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2144 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2145#endif
2146 /*SUPPRESS 530*/
2147 return s;
0453d815 2148 }
4633a7c4 2149 case 'h':
ac27b0f5 2150 usage(PL_origargv[0]);
6ad3d225 2151 PerlProc_exit(0);
79072805 2152 case 'i':
3280af22
NIS		 2153 if (PL_inplace)
2154 Safefree(PL_inplace);
2155 PL_inplace = savepv(s+1);
79072805 2156 /*SUPPRESS 530*/
3280af22 2157 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2158 if (*s) {
fb73857a 2159 *s++ = '\0';
7b8d334a
GS		 2160 if (*s == '-') /* Additional switches on #! line. */
2161 s++;
2162 }
fb73857a 2163 return s;
2164 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2165 forbid_setid("-I");
fb73857a 2166 ++s;
2167 while (*s && isSPACE(*s))
2168 ++s;
2169 if (*s) {
774d564b 2170 char *e, *p;
0df16ed7
GS		 2171 p = s;
2172 /* ignore trailing spaces (possibly followed by other switches) */
2173 do {
2174 for (e = p; *e && !isSPACE(*e); e++) ;
2175 p = e;
2176 while (isSPACE(*p))
2177 p++;
2178 } while (*p && *p != '-');
2179 e = savepvn(s, e-s);
9c8a64f0 2180 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2181 Safefree(e);
2182 s = p;
2183 if (*s == '-')
2184 s++;
79072805
LW		 2185 }
2186 else
a67e862a 2187 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2188 return s;
79072805 2189 case 'l':
3280af22 2190 PL_minus_l = TRUE;
79072805 2191 s++;
7889fe52
NIS		 2192 if (PL_ors_sv) {
2193 SvREFCNT_dec(PL_ors_sv);
2194 PL_ors_sv = Nullsv;
2195 }
79072805 2196 if (isDIGIT(*s)) {
7889fe52 2197 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2198 numlen = 0; /* disallow underscores */
7889fe52 2199 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2200 s += numlen;
2201 }
2202 else {
3280af22 2203 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2204 PL_ors_sv = newSVpvn("\n\n",2);
2205 }
2206 else {
2207 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2208 }
79072805
LW		 2209 }
2210 return s;
1a30305b 2211 case 'M':
bbce6d69 2212 forbid_setid("-M"); /* XXX ? */
1a30305b 2213 /* FALL THROUGH */
2214 case 'm':
bbce6d69 2215 forbid_setid("-m"); /* XXX ? */
1a30305b 2216 if (*++s) {
a5f75d66 2217 char *start;
11343788 2218 SV *sv;
a5f75d66
AD		 2219 char *use = "use ";
2220 /* -M-foo == 'no foo' */
2221 if (*s == '-') { use = "no "; ++s; }
11343788 2222 sv = newSVpv(use,0);
a5f75d66 2223 start = s;
1a30305b 2224 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2225 while(isALNUM(*s) || *s==':') ++s;
2226 if (*s != '=') {
11343788 2227 sv_catpv(sv, start);
c07a80fd 2228 if (*(start-1) == 'm') {
2229 if (*s != '\0')
cea2e8a9 2230 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2231 sv_catpv( sv, " ()");
c07a80fd 2232 }
2233 } else {
6df41af2 2234 if (s == start)
be98fb35
GS		 2235 Perl_croak(aTHX_ "Module name required with -%c option",
2236 s[-1]);
11343788
MB		 2237 sv_catpvn(sv, start, s-start);
2238 sv_catpv(sv, " split(/,/,q{");
2239 sv_catpv(sv, ++s);
2240 sv_catpv(sv, "})");
c07a80fd 2241 }
1a30305b 2242 s += strlen(s);
5c831c24 2243 if (!PL_preambleav)
3280af22
NIS		 2244 PL_preambleav = newAV();
2245 av_push(PL_preambleav, sv);
1a30305b 2246 }
2247 else
cea2e8a9 2248 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2249 return s;
79072805 2250 case 'n':
3280af22 2251 PL_minus_n = TRUE;
79072805
LW		 2252 s++;
2253 return s;
2254 case 'p':
3280af22 2255 PL_minus_p = TRUE;
79072805
LW		 2256 s++;
2257 return s;
2258 case 's':
bbce6d69 2259 forbid_setid("-s");
3280af22 2260 PL_doswitches = TRUE;
79072805
LW		 2261 s++;
2262 return s;
463ee0b2 2263 case 'T':
3280af22 2264 if (!PL_tainting)
cea2e8a9 2265 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2266 s++;
2267 return s;
79072805 2268 case 'u':
bf4acbe4
GS		 2269#ifdef MACOS_TRADITIONAL
2270 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2271#endif
3280af22 2272 PL_do_undump = TRUE;
79072805
LW		 2273 s++;
2274 return s;
2275 case 'U':
3280af22 2276 PL_unsafe = TRUE;
79072805
LW		 2277 s++;
2278 return s;
2279 case 'v':
b0e47665 2280 PerlIO_printf(PerlIO_stdout(),
d2560b70 2281 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2282 PL_patchlevel, ARCHNAME));
fb73857a 2283#if defined(LOCAL_PATCH_COUNT)
2284 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2285 PerlIO_printf(PerlIO_stdout(),
2286 "\n(with %d registered patch%s, "
2287 "see perl -V for more detail)",
2288 (int)LOCAL_PATCH_COUNT,
2289 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2290#endif
1a30305b 2291
b0e47665 2292 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2293 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2294#ifdef MACOS_TRADITIONAL
2295 PerlIO_printf(PerlIO_stdout(),
084592ab 2296 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2297#endif
79072805 2298#ifdef MSDOS
b0e47665
GS		 2299 PerlIO_printf(PerlIO_stdout(),
2300 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2301#endif
2302#ifdef DJGPP
b0e47665
GS		 2303 PerlIO_printf(PerlIO_stdout(),
2304 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2305 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2306#endif
79072805 2307#ifdef OS2
b0e47665
GS		 2308 PerlIO_printf(PerlIO_stdout(),
2309 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2310 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2311#endif
79072805 2312#ifdef atarist
b0e47665
GS		 2313 PerlIO_printf(PerlIO_stdout(),
2314 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2315#endif
a3f9223b 2316#ifdef __BEOS__
b0e47665
GS		 2317 PerlIO_printf(PerlIO_stdout(),
2318 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2319#endif
1d84e8df 2320#ifdef MPE
b0e47665
GS		 2321 PerlIO_printf(PerlIO_stdout(),
2322 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2323#endif
9d116dd7 2324#ifdef OEMVS
b0e47665
GS		 2325 PerlIO_printf(PerlIO_stdout(),
2326 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2327#endif
495c5fdc 2328#ifdef __VOS__
b0e47665
GS		 2329 PerlIO_printf(PerlIO_stdout(),
2330 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2331#endif
092bebab 2332#ifdef __OPEN_VM
b0e47665
GS		 2333 PerlIO_printf(PerlIO_stdout(),
2334 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2335#endif
a1a0e61e 2336#ifdef POSIX_BC
b0e47665
GS		 2337 PerlIO_printf(PerlIO_stdout(),
2338 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2339#endif
61ae2fbf 2340#ifdef __MINT__
b0e47665
GS		 2341 PerlIO_printf(PerlIO_stdout(),
2342 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2343#endif
f83d2536 2344#ifdef EPOC
b0e47665
GS		 2345 PerlIO_printf(PerlIO_stdout(),
2346 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2347#endif
baed7233
DL		 2348#ifdef BINARY_BUILD_NOTICE
2349 BINARY_BUILD_NOTICE;
2350#endif
b0e47665
GS		 2351 PerlIO_printf(PerlIO_stdout(),
2352 "\n\
79072805 2353Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2354GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2355Complete documentation for Perl, including FAQ lists, should be found on\n\
2356this system using `man perl' or `perldoc perl'. If you have access to the\n\
2357Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2358 PerlProc_exit(0);
79072805 2359 case 'w':
599cee73 2360 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2361 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2362 s++;
2363 return s;
2364 case 'W':
ac27b0f5 2365 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2366 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2367 s++;
2368 return s;
2369 case 'X':
ac27b0f5 2370 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2371 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2372 s++;
2373 return s;
a0d0e21e 2374 case '*':
79072805
LW		 2375 case ' ':
2376 if (s[1] == '-') /* Additional switches on #! line. */
2377 return s+2;
2378 break;
a0d0e21e 2379 case '-':
79072805 2380 case 0:
51882d45 2381#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2382 case '\r':
2383#endif
79072805
LW		 2384 case '\n':
2385 case '\t':
2386 break;
aa689395 2387#ifdef ALTERNATE_SHEBANG
2388 case 'S': /* OS/2 needs -S on "extproc" line. */
2389 break;
2390#endif
a0d0e21e 2391 case 'P':
3280af22 2392 if (PL_preprocess)
a0d0e21e
LW		 2393 return s+1;
2394 /* FALL THROUGH */
79072805 2395 default:
cea2e8a9 2396 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2397 }
2398 return Nullch;
2399}
2400
2401/* compliments of Tom Christiansen */
2402
2403/* unexec() can be found in the Gnu emacs distribution */
ee580363 2404/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2405
2406void
864dbfa3 2407Perl_my_unexec(pTHX)
79072805
LW		 2408{
2409#ifdef UNEXEC
46fc3d4c 2410 SV* prog;
2411 SV* file;
ee580363 2412 int status = 1;
79072805
LW		 2413 extern int etext;
2414
ee580363 2415 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2416 sv_catpv(prog, "/perl");
6b88bc9c 2417 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2418 sv_catpv(file, ".perldump");
79072805 2419
ee580363
GS		 2420 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2421 /* unexec prints msg to stderr in case of failure */
6ad3d225 2422 PerlProc_exit(status);
79072805 2423#else
a5f75d66
AD		 2424# ifdef VMS
2425# include <lib$routines.h>
2426 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2427# else
79072805 2428 ABORT(); /* for use with undump */
aa689395 2429# endif
a5f75d66 2430#endif
79072805
LW		 2431}
2432
cb68f92d
GS		 2433/* initialize curinterp */
2434STATIC void
cea2e8a9 2435S_init_interp(pTHX)
cb68f92d
GS		 2436{
2437
066ef5b5 2438#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2439#define I_REINIT \
6b88bc9c
GS		 2440 STMT_START { \
2441 PL_chopset = " \n-"; \
2442 PL_copline = NOLINE; \
2443 PL_curcop = &PL_compiling;\
2444 PL_curcopdb = NULL; \
2445 PL_dbargs = 0; \
3967c732 2446 PL_dumpindent = 4; \
6b88bc9c
GS		 2447 PL_laststatval = -1; \
2448 PL_laststype = OP_STAT; \
2449 PL_maxscream = -1; \
2450 PL_maxsysfd = MAXSYSFD; \
2451 PL_statname = Nullsv; \
2452 PL_tmps_floor = -1; \
2453 PL_tmps_ix = -1; \
2454 PL_op_mask = NULL; \
6b88bc9c
GS		 2455 PL_laststatval = -1; \
2456 PL_laststype = OP_STAT; \
2457 PL_mess_sv = Nullsv; \
2458 PL_splitstr = " "; \
2459 PL_generation = 100; \
2460 PL_exitlist = NULL; \
2461 PL_exitlistlen = 0; \
2462 PL_regindent = 0; \
2463 PL_in_clean_objs = FALSE; \
2464 PL_in_clean_all = FALSE; \
2465 PL_profiledata = NULL; \
2466 PL_rsfp = Nullfp; \
2467 PL_rsfp_filters = Nullav; \
24d3c518 2468 PL_dirty = FALSE; \
cb68f92d 2469 } STMT_END
9666903d 2470 I_REINIT;
066ef5b5
GS		 2471#else
2472# ifdef MULTIPLICITY
2473# define PERLVAR(var,type)
51371543 2474# define PERLVARA(var,n,type)
cea2e8a9 2475# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2476# if defined(USE_THREADS)
2477# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2478# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2479# else /* !USE_THREADS */
2480# define PERLVARI(var,type,init) aTHX->var = init;
2481# define PERLVARIC(var,type,init) aTHX->var = init;
2482# endif /* USE_THREADS */
cea2e8a9 2483# else
c5be433b
GS		 2484# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2485# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2486# endif
066ef5b5
GS		 2487# include "intrpvar.h"
2488# ifndef USE_THREADS
2489# include "thrdvar.h"
2490# endif
2491# undef PERLVAR
51371543 2492# undef PERLVARA
066ef5b5
GS		 2493# undef PERLVARI
2494# undef PERLVARIC
3967c732 2495# else
066ef5b5 2496# define PERLVAR(var,type)
51371543 2497# define PERLVARA(var,n,type)
533c011a
NIS		 2498# define PERLVARI(var,type,init) PL_##var = init;
2499# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2500# include "intrpvar.h"
2501# ifndef USE_THREADS
2502# include "thrdvar.h"
2503# endif
2504# undef PERLVAR
51371543 2505# undef PERLVARA
066ef5b5
GS		 2506# undef PERLVARI
2507# undef PERLVARIC
2508# endif
cb68f92d
GS		 2509#endif
2510
cb68f92d
GS		 2511}
2512
76e3520e 2513STATIC void
cea2e8a9 2514S_init_main_stash(pTHX)
79072805 2515{
463ee0b2 2516 GV *gv;
6e72f9df 2517
2518 /* Note that strtab is a rather special HV. Assumptions are made
2519 about not iterating on it, and not adding tie magic to it.
2520 It is properly deallocated in perl_destruct() */
3280af22 2521 PL_strtab = newHV();
5f08fbcd
GS		 2522#ifdef USE_THREADS
2523 MUTEX_INIT(&PL_strtab_mutex);
2524#endif
3280af22
NIS		 2525 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2526 hv_ksplit(PL_strtab, 512);
ac27b0f5 2527
3280af22 2528 PL_curstash = PL_defstash = newHV();
79cb57f6 2529 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2530 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2531 SvREFCNT_dec(GvHV(gv));
3280af22 2532 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2533 SvREADONLY_on(gv);
3280af22
NIS		 2534 HvNAME(PL_defstash) = savepv("main");
2535 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2536 GvMULTI_on(PL_incgv);
2537 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2538 GvMULTI_on(PL_hintgv);
2539 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2540 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2541 GvMULTI_on(PL_errgv);
2542 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2543 GvMULTI_on(PL_replgv);
cea2e8a9 2544 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2545 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2546 sv_setpvn(ERRSV, "", 0);
3280af22 2547 PL_curstash = PL_defstash;
11faa288 2548 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2549 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2550 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2551 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2552 /* We must init $/ before switches are processed. */
864dbfa3 2553 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2554}
2555
76e3520e 2556STATIC void
cea2e8a9 2557S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2558{
6c4ab083 2559 *fdscript = -1;
79072805 2560
3280af22
NIS		 2561 if (PL_e_script) {
2562 PL_origfilename = savepv("-e");
96436eeb 2563 }
6c4ab083
GS		 2564 else {
2565 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2566 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2567
2568 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2569 char *s = scriptname + 8;
2570 *fdscript = atoi(s);
2571 while (isDIGIT(*s))
2572 s++;
2573 if (*s) {
2574 scriptname = savepv(s + 1);
3280af22
NIS		 2575 Safefree(PL_origfilename);
2576 PL_origfilename = scriptname;
6c4ab083
GS		 2577 }
2578 }
2579 }
2580
f4dd75d9
GS		 2581#ifdef USE_ITHREADS
2582 Safefree(CopFILE(PL_curcop));
2583#else
2584 SvREFCNT_dec(CopFILEGV(PL_curcop));
2585#endif
57843af0 2586 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2587 if (strEQ(PL_origfilename,"-"))
79072805 2588 scriptname = "";
01f988be 2589 if (*fdscript >= 0) {
3280af22 2590 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2591#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2592 if (PL_rsfp)
2593 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2594#endif
2595 }
3280af22 2596 else if (PL_preprocess) {
46fc3d4c 2597 char *cpp_cfg = CPPSTDIN;
79cb57f6 2598 SV *cpp = newSVpvn("",0);
46fc3d4c 2599 SV *cmd = NEWSV(0,0);
2600
2601 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2602 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2603 sv_catpv(cpp, cpp_cfg);
79072805 2604
0df16ed7 2605 sv_catpvn(sv, "-I", 2);
fed7345c 2606 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2607
52853b95 2608#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2609 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2610sed %s -e \"/^[^#]/b\" \
2611 -e \"/^#[ ]*include[ ]/b\" \
2612 -e \"/^#[ ]*define[ ]/b\" \
2613 -e \"/^#[ ]*if[ ]/b\" \
2614 -e \"/^#[ ]*ifdef[ ]/b\" \
2615 -e \"/^#[ ]*ifndef[ ]/b\" \
2616 -e \"/^#[ ]*else/b\" \
2617 -e \"/^#[ ]*elif[ ]/b\" \
2618 -e \"/^#[ ]*undef[ ]/b\" \
2619 -e \"/^#[ ]*endif/b\" \
2620 -e \"s/^#.*//\" \
894356b3 2621 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2622 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2623#else
092bebab 2624# ifdef __OPEN_VM
cea2e8a9 2625 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2626%s %s -e '/^[^#]/b' \
2627 -e '/^#[ ]*include[ ]/b' \
2628 -e '/^#[ ]*define[ ]/b' \
2629 -e '/^#[ ]*if[ ]/b' \
2630 -e '/^#[ ]*ifdef[ ]/b' \
2631 -e '/^#[ ]*ifndef[ ]/b' \
2632 -e '/^#[ ]*else/b' \
2633 -e '/^#[ ]*elif[ ]/b' \
2634 -e '/^#[ ]*undef[ ]/b' \
2635 -e '/^#[ ]*endif/b' \
2636 -e 's/^[ ]*#.*//' \
894356b3 2637 %s | %"SVf" %"SVf" %s",
092bebab 2638# else
cea2e8a9 2639 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2640%s %s -e '/^[^#]/b' \
2641 -e '/^#[ ]*include[ ]/b' \
2642 -e '/^#[ ]*define[ ]/b' \
2643 -e '/^#[ ]*if[ ]/b' \
2644 -e '/^#[ ]*ifdef[ ]/b' \
2645 -e '/^#[ ]*ifndef[ ]/b' \
2646 -e '/^#[ ]*else/b' \
2647 -e '/^#[ ]*elif[ ]/b' \
2648 -e '/^#[ ]*undef[ ]/b' \
2649 -e '/^#[ ]*endif/b' \
2650 -e 's/^[ ]*#.*//' \
894356b3 2651 %s | %"SVf" -C %"SVf" %s",
092bebab 2652# endif
79072805
LW		 2653#ifdef LOC_SED
2654 LOC_SED,
2655#else
2656 "sed",
2657#endif
3280af22 2658 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2659#endif
46fc3d4c 2660 scriptname, cpp, sv, CPPMINUS);
3280af22 2661 PL_doextract = FALSE;
79072805 2662#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2663 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2664#ifdef HAS_SETEUID
b28d0864 2665 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2666#else
2667#ifdef HAS_SETREUID
b28d0864 2668 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2669#else
2670#ifdef HAS_SETRESUID
b28d0864 2671 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2672#else
b28d0864 2673 PerlProc_setuid(PL_uid);
79072805
LW		 2674#endif
2675#endif
85e6fe83 2676#endif
b28d0864 2677 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2678 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2679 }
2680#endif /* IAMSUID */
3280af22 2681 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2682 SvREFCNT_dec(cmd);
2683 SvREFCNT_dec(cpp);
79072805
LW		 2684 }
2685 else if (!*scriptname) {
bbce6d69 2686 forbid_setid("program input from stdin");
3280af22 2687 PL_rsfp = PerlIO_stdin();
79072805 2688 }
96436eeb 2689 else {
3280af22 2690 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2691#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2692 if (PL_rsfp)
2693 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2694#endif
2695 }
3280af22 2696 if (!PL_rsfp) {
13281fa4 2697#ifdef DOSUID
a687059c 2698#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2699 if (PL_euid &&
cc49e20b 2700 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2701 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2702 {
46fc3d4c 2703 /* try again */
a7cb1f99 2704 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2705 (int)PERL_REVISION, (int)PERL_VERSION,
2706 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2707 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2708 }
2709#endif
2710#endif
cea2e8a9 2711 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2712 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2713 }
79072805 2714}
8d063cd8 2715
7b89560d
JH		 2716/* Mention
2717 * I_SYSSTATVFS HAS_FSTATVFS
2718 * I_SYSMOUNT
c890dc6c 2719 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2720 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2721 * here so that metaconfig picks them up. */
2722
104d25b7 2723#ifdef IAMSUID
864dbfa3 2724STATIC int
e688b231 2725S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2726{
0545a864
JH		 2727 int check_okay = 0; /* able to do all the required sys/libcalls */
2728 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2729/*
ad27e871 2730 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2731 * fstatvfs() is UNIX98.
0545a864 2732 * fstatfs() is 4.3 BSD.
ad27e871 2733 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2734 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2735 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2736 */
2737
6439433f
JH		 2738#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2739
2740# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2741 defined(HAS_FSTATVFS)
2742# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2743 struct statvfs stfs;
6439433f 2744
104d25b7
JH		 2745 check_okay = fstatvfs(fd, &stfs) == 0;
2746 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2747# endif /* fstatvfs */
ac27b0f5 2748
6439433f
JH		 2749# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2750 defined(PERL_MOUNT_NOSUID) && \
2751 defined(HAS_FSTATFS) && \
2752 defined(HAS_STRUCT_STATFS) && \
2753 defined(HAS_STRUCT_STATFS_F_FLAGS)
2754# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2755 struct statfs stfs;
6439433f 2756
104d25b7 2757 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2758 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2759# endif /* fstatfs */
2760
2761# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2762 defined(PERL_MOUNT_NOSUID) && \
2763 defined(HAS_FSTAT) && \
2764 defined(HAS_USTAT) && \
2765 defined(HAS_GETMNT) && \
2766 defined(HAS_STRUCT_FS_DATA) && \
2767 defined(NOSTAT_ONE)
2768# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2769 struct stat fdst;
6439433f 2770
0545a864 2771 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2772 struct ustat us;
2773 if (ustat(fdst.st_dev, &us) == 0) {
2774 struct fs_data fsd;
2775 /* NOSTAT_ONE here because we're not examining fields which
2776 * vary between that case and STAT_ONE. */
ad27e871 2777 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2778 size_t cmplen = sizeof(us.f_fname);
2779 if (sizeof(fsd.fd_req.path) < cmplen)
2780 cmplen = sizeof(fsd.fd_req.path);
2781 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2782 fdst.st_dev == fsd.fd_req.dev) {
2783 check_okay = 1;
2784 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2785 }
2786 }
2787 }
2788 }
0545a864 2789 }
6439433f
JH		 2790# endif /* fstat+ustat+getmnt */
2791
2792# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2793 defined(HAS_GETMNTENT) && \
2794 defined(HAS_HASMNTOPT) && \
2795 defined(MNTOPT_NOSUID)
2796# define FD_ON_NOSUID_CHECK_OKAY
2797 FILE *mtab = fopen("/etc/mtab", "r");
2798 struct mntent *entry;
2799 struct stat stb, fsb;
104d25b7
JH		 2800
2801 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2802 while (entry = getmntent(mtab)) {
2803 if (stat(entry->mnt_dir, &fsb) == 0
2804 && fsb.st_dev == stb.st_dev)
2805 {
2806 /* found the filesystem */
2807 check_okay = 1;
2808 if (hasmntopt(entry, MNTOPT_NOSUID))
2809 on_nosuid = 1;
2810 break;
2811 } /* A single fs may well fail its stat(). */
2812 }
104d25b7
JH		 2813 }
2814 if (mtab)
6439433f
JH		 2815 fclose(mtab);
2816# endif /* getmntent+hasmntopt */
0545a864 2817
ac27b0f5 2818 if (!check_okay)
0545a864 2819 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2820 return on_nosuid;
2821}
2822#endif /* IAMSUID */
2823
76e3520e 2824STATIC void
cea2e8a9 2825S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2826{
155aba94 2827#ifdef IAMSUID
96436eeb 2828 int which;
155aba94 2829#endif
96436eeb 2830
13281fa4
LW		 2831 /* do we need to emulate setuid on scripts? */
2832
2833 /* This code is for those BSD systems that have setuid #! scripts disabled
2834 * in the kernel because of a security problem. Merely defining DOSUID
2835 * in perl will not fix that problem, but if you have disabled setuid
2836 * scripts in the kernel, this will attempt to emulate setuid and setgid
2837 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2838 * root version must be called suidperl or sperlN.NNN. If regular perl
2839 * discovers that it has opened a setuid script, it calls suidperl with
2840 * the same argv that it had. If suidperl finds that the script it has
2841 * just opened is NOT setuid root, it sets the effective uid back to the
2842 * uid. We don't just make perl setuid root because that loses the
2843 * effective uid we had before invoking perl, if it was different from the
2844 * uid.
13281fa4
LW		 2845 *
2846 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2847 * be defined in suidperl only. suidperl must be setuid root. The
2848 * Configure script will set this up for you if you want it.
2849 */
a687059c 2850
13281fa4 2851#ifdef DOSUID
6e72f9df 2852 char *s, *s2;
a0d0e21e 2853
b28d0864 2854 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2855 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2856 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2857 I32 len;
2d8e6c8d 2858 STRLEN n_a;
13281fa4 2859
a687059c 2860#ifdef IAMSUID
fe14fcc3 2861#ifndef HAS_SETREUID
a687059c
LW		 2862 /* On this access check to make sure the directories are readable,
2863 * there is actually a small window that the user could use to make
2864 * filename point to an accessible directory. So there is a faint
2865 * chance that someone could execute a setuid script down in a
2866 * non-accessible directory. I don't know what to do about that.
2867 * But I don't think it's too important. The manual lies when
2868 * it says access() is useful in setuid programs.
2869 */
cc49e20b 2870 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2871 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2872#else
2873 /* If we can swap euid and uid, then we can determine access rights
2874 * with a simple stat of the file, and then compare device and
2875 * inode to make sure we did stat() on the same file we opened.
2876 * Then we just have to make sure he or she can execute it.
2877 */
2878 {
2879 struct stat tmpstatbuf;
2880
85e6fe83
LW		 2881 if (
2882#ifdef HAS_SETREUID
b28d0864 2883 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2884#else
2885# if HAS_SETRESUID
b28d0864 2886 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2887# endif
85e6fe83 2888#endif
b28d0864 2889 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2890 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2891 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2892 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2893#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2894 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2895 Perl_croak(aTHX_ "Permission denied");
104d25b7 2896#endif
b28d0864
NIS		 2897 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2898 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2899 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2900 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2901 }
85e6fe83
LW		 2902 if (
2903#ifdef HAS_SETREUID
b28d0864 2904 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2905#else
2906# if defined(HAS_SETRESUID)
b28d0864 2907 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2908# endif
85e6fe83 2909#endif
b28d0864 2910 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2911 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2912 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2913 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2914 }
fe14fcc3 2915#endif /* HAS_SETREUID */
a687059c
LW		 2916#endif /* IAMSUID */
2917
b28d0864 2918 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2919 Perl_croak(aTHX_ "Permission denied");
b28d0864 2920 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2921 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2922 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2923 CopLINE_inc(PL_curcop);
6b88bc9c 2924 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2925 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2926 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2927 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2928 if (*s == ' ') s++;
45d8adaa 2929 while (!isSPACE(*s)) s++;
2d8e6c8d 2930 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2931 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2932 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2933 Perl_croak(aTHX_ "Not a perl script");
a687059c 2934 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2935 /*
2936 * #! arg must be what we saw above. They can invoke it by
2937 * mentioning suidperl explicitly, but they may not add any strange
2938 * arguments beyond what #! says if they do invoke suidperl that way.
2939 */
2940 len = strlen(validarg);
2941 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2942 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2943 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2944
2945#ifndef IAMSUID
b28d0864
NIS		 2946 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2947 PL_euid == PL_statbuf.st_uid)
2948 if (!PL_do_undump)
cea2e8a9 2949 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2950FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2951#endif /* IAMSUID */
13281fa4 2952
b28d0864
NIS		 2953 if (PL_euid) { /* oops, we're not the setuid root perl */
2954 (void)PerlIO_close(PL_rsfp);
13281fa4 2955#ifndef IAMSUID
46fc3d4c 2956 /* try again */
a7cb1f99 2957 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2958 (int)PERL_REVISION, (int)PERL_VERSION,
2959 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2960#endif
cea2e8a9 2961 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2962 }
2963
b28d0864 2964 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2965#ifdef HAS_SETEGID
b28d0864 2966 (void)setegid(PL_statbuf.st_gid);
a687059c 2967#else
fe14fcc3 2968#ifdef HAS_SETREGID
b28d0864 2969 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 2970#else
2971#ifdef HAS_SETRESGID
b28d0864 2972 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2973#else
b28d0864 2974 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 2975#endif
2976#endif
85e6fe83 2977#endif
b28d0864 2978 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2979 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2980 }
b28d0864
NIS		 2981 if (PL_statbuf.st_mode & S_ISUID) {
2982 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2983#ifdef HAS_SETEUID
b28d0864 2984 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2985#else
fe14fcc3 2986#ifdef HAS_SETREUID
b28d0864 2987 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 2988#else
2989#ifdef HAS_SETRESUID
b28d0864 2990 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2991#else
b28d0864 2992 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 2993#endif
2994#endif
85e6fe83 2995#endif
b28d0864 2996 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2997 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2998 }
b28d0864 2999 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3000#ifdef HAS_SETEUID
b28d0864 3001 (void)seteuid((Uid_t)PL_uid);
a687059c 3002#else
fe14fcc3 3003#ifdef HAS_SETREUID
b28d0864 3004 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3005#else
85e6fe83 3006#ifdef HAS_SETRESUID
b28d0864 3007 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3008#else
b28d0864 3009 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3010#endif
a687059c
LW		 3011#endif
3012#endif
b28d0864 3013 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3014 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3015 }
748a9306 3016 init_ids();
b28d0864 3017 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3018 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3019 }
3020#ifdef IAMSUID
6b88bc9c 3021 else if (PL_preprocess)
cea2e8a9 3022 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3023 else if (fdscript >= 0)
cea2e8a9 3024 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3025 else
cea2e8a9 3026 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3027
3028 /* We absolutely must clear out any saved ids here, so we */
3029 /* exec the real perl, substituting fd script for scriptname. */
3030 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3031 PerlIO_rewind(PL_rsfp);
3032 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3033 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3034 if (!PL_origargv[which])
cea2e8a9
GS		 3035 Perl_croak(aTHX_ "Permission denied");
3036 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3037 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3038#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3039 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3040#endif
a7cb1f99 3041 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3042 (int)PERL_REVISION, (int)PERL_VERSION,
3043 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3044 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3045#endif /* IAMSUID */
a687059c 3046#else /* !DOSUID */
3280af22 3047 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3048#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3049 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3050 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3051 ||
b28d0864 3052 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3053 )
b28d0864 3054 if (!PL_do_undump)
cea2e8a9 3055 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3056FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3057#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3058 /* not set-id, must be wrapped */
a687059c 3059 }
13281fa4 3060#endif /* DOSUID */
79072805 3061}
13281fa4 3062
76e3520e 3063STATIC void
cea2e8a9 3064S_find_beginning(pTHX)
79072805 3065{
6e72f9df 3066 register char *s, *s2;
33b78306
LW		 3067
3068 /* skip forward in input to the real script? */
3069
bbce6d69 3070 forbid_setid("-x");
bf4acbe4 3071#ifdef MACOS_TRADITIONAL
084592ab 3072 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3073
bf4acbe4
GS		 3074 while (PL_doextract || gMacPerl_AlwaysExtract) {
3075 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3076 if (!gMacPerl_AlwaysExtract)
3077 Perl_croak(aTHX_ "No Perl script found in input\n");
3078
3079 if (PL_doextract) /* require explicit override ? */
3080 if (!OverrideExtract(PL_origfilename))
3081 Perl_croak(aTHX_ "User aborted script\n");
3082 else
3083 PL_doextract = FALSE;
3084
3085 /* Pater peccavi, file does not have #! */
3086 PerlIO_rewind(PL_rsfp);
ac27b0f5 3087
bf4acbe4
GS		 3088 break;
3089 }
3090#else
3280af22
NIS		 3091 while (PL_doextract) {
3092 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3093 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3094#endif
6e72f9df 3095 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3096 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3097 PL_doextract = FALSE;
6e72f9df 3098 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3099 s2 = s;
3100 while (*s == ' ' || *s == '\t') s++;
3101 if (*s++ == '-') {
3102 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3103 if (strnEQ(s2-4,"perl",4))
3104 /*SUPPRESS 530*/
155aba94
GS		 3105 while ((s = moreswitches(s)))
3106 ;
33b78306 3107 }
83025b21
LW		 3108 }
3109 }
3110}
3111
afe37c7d 3112
76e3520e 3113STATIC void
cea2e8a9 3114S_init_ids(pTHX)
352d5a3a 3115{
d8eceb89
JH		 3116 PL_uid = PerlProc_getuid();
3117 PL_euid = PerlProc_geteuid();
3118 PL_gid = PerlProc_getgid();
3119 PL_egid = PerlProc_getegid();
748a9306 3120#ifdef VMS
b28d0864
NIS		 3121 PL_uid |= PL_gid << 16;
3122 PL_euid |= PL_egid << 16;
748a9306 3123#endif
3280af22 3124 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3125}
79072805 3126
76e3520e 3127STATIC void
cea2e8a9 3128S_forbid_setid(pTHX_ char *s)
bbce6d69 3129{
3280af22 3130 if (PL_euid != PL_uid)
cea2e8a9 3131 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3132 if (PL_egid != PL_gid)
cea2e8a9 3133 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3134}
3135
1ee4443e
IZ		 3136void
3137Perl_init_debugger(pTHX)
748a9306 3138{
1ee4443e
IZ		 3139 HV *ostash = PL_curstash;
3140
3280af22
NIS		 3141 PL_curstash = PL_debstash;
3142 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3143 AvREAL_off(PL_dbargs);
3144 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3145 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3146 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3147 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3148 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3149 sv_setiv(PL_DBsingle, 0);
3280af22 3150 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3151 sv_setiv(PL_DBtrace, 0);
3280af22 3152 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3153 sv_setiv(PL_DBsignal, 0);
1ee4443e 3154 PL_curstash = ostash;
352d5a3a
LW		 3155}
3156
2ce36478
SM		 3157#ifndef STRESS_REALLOC
3158#define REASONABLE(size) (size)
3159#else
3160#define REASONABLE(size) (1) /* unreasonable */
3161#endif
3162
11343788 3163void
cea2e8a9 3164Perl_init_stacks(pTHX)
79072805 3165{
e336de0d 3166 /* start with 128-item stack and 8K cxstack */
3280af22 3167 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3168 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3169 PL_curstackinfo->si_type = PERLSI_MAIN;
3170 PL_curstack = PL_curstackinfo->si_stack;
3171 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3172
3280af22
NIS		 3173 PL_stack_base = AvARRAY(PL_curstack);
3174 PL_stack_sp = PL_stack_base;
3175 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3176
3280af22
NIS		 3177 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3178 PL_tmps_floor = -1;
3179 PL_tmps_ix = -1;
3180 PL_tmps_max = REASONABLE(128);
8990e307 3181
3280af22
NIS		 3182 New(54,PL_markstack,REASONABLE(32),I32);
3183 PL_markstack_ptr = PL_markstack;
3184 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3185
ce2f7c3b 3186 SET_MARK_OFFSET;
e336de0d 3187
3280af22
NIS		 3188 New(54,PL_scopestack,REASONABLE(32),I32);
3189 PL_scopestack_ix = 0;
3190 PL_scopestack_max = REASONABLE(32);
79072805 3191
3280af22
NIS		 3192 New(54,PL_savestack,REASONABLE(128),ANY);
3193 PL_savestack_ix = 0;
3194 PL_savestack_max = REASONABLE(128);
79072805 3195
3280af22
NIS		 3196 New(54,PL_retstack,REASONABLE(16),OP*);
3197 PL_retstack_ix = 0;
3198 PL_retstack_max = REASONABLE(16);
378cc40b 3199}
33b78306 3200
2ce36478
SM		 3201#undef REASONABLE
3202
76e3520e 3203STATIC void
cea2e8a9 3204S_nuke_stacks(pTHX)
6e72f9df 3205{
3280af22
NIS		 3206 while (PL_curstackinfo->si_next)
3207 PL_curstackinfo = PL_curstackinfo->si_next;
3208 while (PL_curstackinfo) {
3209 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3210 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3211 Safefree(PL_curstackinfo->si_cxstack);
3212 Safefree(PL_curstackinfo);
3213 PL_curstackinfo = p;
e336de0d 3214 }
3280af22
NIS		 3215 Safefree(PL_tmps_stack);
3216 Safefree(PL_markstack);
3217 Safefree(PL_scopestack);
3218 Safefree(PL_savestack);
3219 Safefree(PL_retstack);
378cc40b 3220}
33b78306 3221
76e3520e 3222#ifndef PERL_OBJECT
760ac839 3223static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3224#endif
7aa04957 3225
76e3520e 3226STATIC void
cea2e8a9 3227S_init_lexer(pTHX)
8990e307 3228{
76e3520e
GS		 3229#ifdef PERL_OBJECT
3230 PerlIO *tmpfp;
3231#endif
3280af22
NIS		 3232 tmpfp = PL_rsfp;
3233 PL_rsfp = Nullfp;
3234 lex_start(PL_linestr);
3235 PL_rsfp = tmpfp;
79cb57f6 3236 PL_subname = newSVpvn("main",4);
8990e307
LW		 3237}
3238
76e3520e 3239STATIC void
cea2e8a9 3240S_init_predump_symbols(pTHX)
45d8adaa 3241{
93a17b20 3242 GV *tmpgv;
af8c498a 3243 IO *io;
79072805 3244
864dbfa3 3245 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3246 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3247 GvMULTI_on(PL_stdingv);
af8c498a
GS		 3248 io = GvIOp(PL_stdingv);
3249 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3250 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3251 GvMULTI_on(tmpgv);
af8c498a 3252 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3253
85e6fe83 3254 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3255 GvMULTI_on(tmpgv);
af8c498a
GS		 3256 io = GvIOp(tmpgv);
3257 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3258 setdefout(tmpgv);
adbc6bb1 3259 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3260 GvMULTI_on(tmpgv);
af8c498a 3261 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3262
bf49b057
GS		 3263 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3264 GvMULTI_on(PL_stderrgv);
3265 io = GvIOp(PL_stderrgv);
af8c498a 3266 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3267 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3268 GvMULTI_on(tmpgv);
af8c498a 3269 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3270
3280af22 3271 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3272
bf4acbe4
GS		 3273 if (PL_osname)
3274 Safefree(PL_osname);
3275 PL_osname = savepv(OSNAME);
79072805 3276}
33b78306 3277
76e3520e 3278STATIC void
cea2e8a9 3279S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3280{
79072805
LW		 3281 char *s;
3282 SV *sv;
3283 GV* tmpgv;
103a7189 3284 char **dup_env_base = 0;
9cbac4c7 3285#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189 3286 int dup_env_count = 0;
9cbac4c7 3287#endif
fe14fcc3 3288
79072805 3289 argc--,argv++; /* skip name of script */
3280af22 3290 if (PL_doswitches) {
79072805
LW		 3291 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3292 if (!argv[0][1])
3293 break;
379d538a 3294 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3295 argc--,argv++;
3296 break;
3297 }
155aba94 3298 if ((s = strchr(argv[0], '='))) {
79072805 3299 *s++ = '\0';
85e6fe83 3300 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3301 }
3302 else
85e6fe83 3303 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3304 }
79072805 3305 }
3280af22
NIS		 3306 PL_toptarget = NEWSV(0,0);
3307 sv_upgrade(PL_toptarget, SVt_PVFM);
3308 sv_setpvn(PL_toptarget, "", 0);
3309 PL_bodytarget = NEWSV(0,0);
3310 sv_upgrade(PL_bodytarget, SVt_PVFM);
3311 sv_setpvn(PL_bodytarget, "", 0);
3312 PL_formtarget = PL_bodytarget;
79072805 3313
bbce6d69 3314 TAINT;
155aba94 3315 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3316#ifdef MACOS_TRADITIONAL
3317 /* $0 is not majick on a Mac */
3318 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3319#else
3280af22 3320 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3321 magicname("0", "0", 1);
bf4acbe4 3322#endif
79072805 3323 }
155aba94 3324 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3325#ifdef OS2
23da6c43 3326 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3327#else
3280af22 3328 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3329#endif
155aba94 3330 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3331 GvMULTI_on(PL_argvgv);
3332 (void)gv_AVadd(PL_argvgv);
3333 av_clear(GvAVn(PL_argvgv));
79072805 3334 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3335 SV *sv = newSVpv(argv[0],0);
3336 av_push(GvAVn(PL_argvgv),sv);
3337 if (PL_widesyscalls)
e84ff256 3338 (void)sv_utf8_decode(sv);
79072805
LW		 3339 }
3340 }
155aba94 3341 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3342 HV *hv;
3280af22
NIS		 3343 GvMULTI_on(PL_envgv);
3344 hv = GvHVn(PL_envgv);
65c50114 3345 hv_magic(hv, Nullgv, 'E');
fa6a1c44 3346#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3347 /* Note that if the supplied env parameter is actually a copy
3348 of the global environ then it may now point to free'd memory
3349 if the environment has been modified since. To avoid this
3350 problem we treat env==NULL as meaning 'use the default'
3351 */
3352 if (!env)
3353 env = environ;
5aabfad6 3354 if (env != environ)
79072805 3355 environ[0] = Nullch;
103a7189
JH		 3356#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3357 {
3358 char **env_base;
3359 for (env_base = env; *env; env++)
3360 dup_env_count++;
3361 if ((dup_env_base = (char **)
480bfd1e 3362 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3363 char **dup_env;
3364 for (env = env_base, dup_env = dup_env_base;
3365 *env;
480bfd1e
JH		 3366 env++, dup_env++) {
3367 /* With environ one needs to use safesysmalloc(). */
3368 *dup_env = safesysmalloc(strlen(*env) + 1);
3369 (void)strcpy(*dup_env, *env);
3370 }
103a7189
JH		 3371 *dup_env = Nullch;
3372 env = dup_env_base;
3373 } /* else what? */
3374 }
3375#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3376 for (; *env; env++) {
93a17b20 3377 if (!(s = strchr(*env,'=')))
79072805
LW		 3378 continue;
3379 *s++ = '\0';
60ce6247 3380#if defined(MSDOS)
137443ea 3381 (void)strupr(*env);
3382#endif
79072805
LW		 3383 sv = newSVpv(s--,0);
3384 (void)hv_store(hv, *env, s - *env, sv, 0);
3385 *s = '=';
fe14fcc3 3386 }
480bfd1e 3387#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3388 if (dup_env_base) {
3389 char **dup_env;
3390 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3391 safesysfree(*dup_env);
3392 safesysfree(dup_env_base);
103a7189 3393 }
7e0f6a1f 3394#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3395#endif /* USE_ENVIRON_ARRAY */
4550b24a 3396#ifdef DYNAMIC_ENV_FETCH
3397 HvNAME(hv) = savepv(ENV_HV_NAME);
3398#endif
79072805 3399 }
bbce6d69 3400 TAINT_NOT;
155aba94 3401 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3402 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3403}
34de22dd 3404
76e3520e 3405STATIC void
cea2e8a9 3406S_init_perllib(pTHX)
34de22dd 3407{
85e6fe83 3408 char *s;
3280af22 3409 if (!PL_tainting) {
552a7a9b 3410#ifndef VMS
76e3520e 3411 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3412 if (s)
9c8a64f0 3413 incpush(s, TRUE, TRUE);
85e6fe83 3414 else
9c8a64f0 3415 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3416#else /* VMS */
3417 /* Treat PERL5?LIB as a possible search list logical name -- the
3418 * "natural" VMS idiom for a Unix path string. We allow each
3419 * element to be a set of |-separated directories for compatibility.
3420 */
3421 char buf[256];
3422 int idx = 0;
3423 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3424 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3425 else
9c8a64f0 3426 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3427#endif /* VMS */
85e6fe83 3428 }
34de22dd 3429
c90c0ff4 3430/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3431 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3432*/
4633a7c4 3433#ifdef APPLLIB_EXP
9c8a64f0 3434 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3435#endif
4633a7c4 3436
fed7345c 3437#ifdef ARCHLIB_EXP
9c8a64f0 3438 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3439#endif
bf4acbe4
GS		 3440#ifdef MACOS_TRADITIONAL
3441 {
3442 struct stat tmpstatbuf;
3443 SV * privdir = NEWSV(55, 0);
3444 char * macperl = PerlEnv_getenv("MACPERL");
3445
3446 if (!macperl)
3447 macperl = "";
3448
3449 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3450 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3451 incpush(SvPVX(privdir), TRUE, FALSE);
3452 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3453 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3454 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3455
bf4acbe4
GS		 3456 SvREFCNT_dec(privdir);
3457 }
3458 if (!PL_tainting)
3459 incpush(":", FALSE, FALSE);
3460#else
fed7345c 3461#ifndef PRIVLIB_EXP
65f19062 3462# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3463#endif
ac27b0f5 3464#if defined(WIN32)
9c8a64f0 3465 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3466#else
9c8a64f0 3467 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3468#endif
4633a7c4 3469
65f19062 3470#ifdef SITEARCH_EXP
3b290362
GS		 3471 /* sitearch is always relative to sitelib on Windows for
3472 * DLL-based path intuition to work correctly */
3473# if !defined(WIN32)
9c8a64f0 3474 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3475# endif
3476#endif
3477
4633a7c4 3478#ifdef SITELIB_EXP
65f19062 3479# if defined(WIN32)
9c8a64f0 3480 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3481# else
9c8a64f0 3482 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3483# endif
3484#endif
189d1e8d 3485
65f19062 3486#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3487 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3488#endif
65f19062
GS		 3489
3490#ifdef PERL_VENDORARCH_EXP
4ea817c6 3491 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3492 * DLL-based path intuition to work correctly */
3493# if !defined(WIN32)
9c8a64f0 3494 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3495# endif
4b03c463 3496#endif
65f19062
GS		 3497
3498#ifdef PERL_VENDORLIB_EXP
3499# if defined(WIN32)
9c8a64f0 3500 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3501# else
9c8a64f0 3502 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3503# endif
a3635516 3504#endif
65f19062
GS		 3505
3506#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3507 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3508#endif
65f19062 3509
3b777bb4
GS		 3510#ifdef PERL_OTHERLIBDIRS
3511 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3512#endif
3513
3280af22 3514 if (!PL_tainting)
9c8a64f0 3515 incpush(".", FALSE, FALSE);
bf4acbe4 3516#endif /* MACOS_TRADITIONAL */
774d564b 3517}
3518
ed79a026 3519#if defined(DOSISH) || defined(EPOC)
774d564b 3520# define PERLLIB_SEP ';'
3521#else
3522# if defined(VMS)
3523# define PERLLIB_SEP '|'
3524# else
bf4acbe4
GS		 3525# if defined(MACOS_TRADITIONAL)
3526# define PERLLIB_SEP ','
3527# else
3528# define PERLLIB_SEP ':'
3529# endif
774d564b 3530# endif
3531#endif
3532#ifndef PERLLIB_MANGLE
3533# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3534#endif
774d564b 3535
76e3520e 3536STATIC void
9c8a64f0 3537S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3538{
3539 SV *subdir = Nullsv;
774d564b 3540
3b290362 3541 if (!p || !*p)
774d564b 3542 return;
3543
9c8a64f0 3544 if (addsubdirs || addoldvers) {
00db4c45 3545 subdir = sv_newmortal();
774d564b 3546 }
3547
3548 /* Break at all separators */
3549 while (p && *p) {
8c52afec 3550 SV *libdir = NEWSV(55,0);
774d564b 3551 char *s;
3552
3553 /* skip any consecutive separators */
3554 while ( *p == PERLLIB_SEP ) {
3555 /* Uncomment the next line for PATH semantics */
79cb57f6 3556 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3557 p++;
3558 }
3559
3560 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3561 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3562 (STRLEN)(s - p));
3563 p = s + 1;
3564 }
3565 else {
3566 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3567 p = Nullch; /* break out */
3568 }
bf4acbe4
GS		 3569#ifdef MACOS_TRADITIONAL
3570 if (!strchr(SvPVX(libdir), ':'))
3571 sv_insert(libdir, 0, 0, ":", 1);
3572 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3573 sv_catpv(libdir, ":");
3574#endif
774d564b 3575
3576 /*
3577 * BEFORE pushing libdir onto @INC we may first push version- and
3578 * archname-specific sub-directories.
3579 */
9c8a64f0 3580 if (addsubdirs || addoldvers) {
29d82f8d 3581#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3582 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3583 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3584 const char **incver;
3585#endif
774d564b 3586 struct stat tmpstatbuf;
aa689395 3587#ifdef VMS
3588 char *unix;
3589 STRLEN len;
774d564b 3590
2d8e6c8d 3591 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3592 len = strlen(unix);
3593 while (unix[len-1] == '/') len--; /* Cosmetic */
3594 sv_usepvn(libdir,unix,len);
3595 }
3596 else
bf49b057 3597 PerlIO_printf(Perl_error_log,
aa689395 3598 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3599 SvPV(libdir,len));
aa689395 3600#endif
9c8a64f0 3601 if (addsubdirs) {
bf4acbe4
GS		 3602#ifdef MACOS_TRADITIONAL
3603#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3604#define PERL_ARCH_FMT "%s:"
3605#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3606#else
3607#define PERL_AV_SUFFIX_FMT "/"
3608#define PERL_ARCH_FMT "/%s"
084592ab 3609#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3610#endif
9c8a64f0 3611 /* .../version/archname if -d .../version/archname */
084592ab 3612 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3613 libdir,
3614 (int)PERL_REVISION, (int)PERL_VERSION,
3615 (int)PERL_SUBVERSION, ARCHNAME);
3616 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3617 S_ISDIR(tmpstatbuf.st_mode))
3618 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3619
9c8a64f0 3620 /* .../version if -d .../version */
084592ab 3621 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3622 (int)PERL_REVISION, (int)PERL_VERSION,
3623 (int)PERL_SUBVERSION);
3624 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3625 S_ISDIR(tmpstatbuf.st_mode))
3626 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3627
3628 /* .../archname if -d .../archname */
bf4acbe4 3629 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3630 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3631 S_ISDIR(tmpstatbuf.st_mode))
3632 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3633 }
9c8a64f0 3634
9c8a64f0 3635#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3636 if (addoldvers) {
9c8a64f0
GS		 3637 for (incver = incverlist; *incver; incver++) {
3638 /* .../xxx if -d .../xxx */
bf4acbe4 3639 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3640 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3641 S_ISDIR(tmpstatbuf.st_mode))
3642 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3643 }
3644 }
29d82f8d 3645#endif
774d564b 3646 }
3647
3648 /* finally push this lib directory on the end of @INC */
3280af22 3649 av_push(GvAVn(PL_incgv), libdir);
774d564b 3650 }
34de22dd 3651}
93a17b20 3652
199100c8 3653#ifdef USE_THREADS
76e3520e 3654STATIC struct perl_thread *
cea2e8a9 3655S_init_main_thread(pTHX)
199100c8 3656{
c5be433b 3657#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3658 struct perl_thread *thr;
cea2e8a9 3659#endif
199100c8
MB		 3660 XPV *xpv;
3661
52e1cb5e 3662 Newz(53, thr, 1, struct perl_thread);
533c011a 3663 PL_curcop = &PL_compiling;
c5be433b 3664 thr->interp = PERL_GET_INTERP;
199100c8 3665 thr->cvcache = newHV();
54b9620d 3666 thr->threadsv = newAV();
940cb80d 3667 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3668 thr->specific = newAV();
3669 thr->flags = THRf_R_JOINABLE;
3670 MUTEX_INIT(&thr->mutex);
3671 /* Handcraft thrsv similarly to mess_sv */
533c011a 3672 New(53, PL_thrsv, 1, SV);
199100c8 3673 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3674 SvFLAGS(PL_thrsv) = SVt_PV;
3675 SvANY(PL_thrsv) = (void*)xpv;
3676 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3677 SvPVX(PL_thrsv) = (char*)thr;
3678 SvCUR_set(PL_thrsv, sizeof(thr));
3679 SvLEN_set(PL_thrsv, sizeof(thr));
3680 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3681 thr->oursv = PL_thrsv;
3682 PL_chopset = " \n-";
3967c732 3683 PL_dumpindent = 4;
533c011a
NIS		 3684
3685 MUTEX_LOCK(&PL_threads_mutex);
3686 PL_nthreads++;
199100c8
MB		 3687 thr->tid = 0;
3688 thr->next = thr;
3689 thr->prev = thr;
8dcd6f7b 3690 thr->thr_done = 0;
533c011a 3691 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3692
4b026b9e 3693#ifdef HAVE_THREAD_INTERN
4f63d024 3694 Perl_init_thread_intern(thr);
235db74f
GS		 3695#endif
3696
3697#ifdef SET_THREAD_SELF
3698 SET_THREAD_SELF(thr);
199100c8
MB		 3699#else
3700 thr->self = pthread_self();
235db74f 3701#endif /* SET_THREAD_SELF */
06d86050 3702 PERL_SET_THX(thr);
199100c8
MB		 3703
3704 /*
411caa50
JH		 3705 * These must come after the thread self setting
3706 * because sv_setpvn does SvTAINT and the taint
3707 * fields thread selfness being set.
199100c8 3708 */
533c011a
NIS		 3709 PL_toptarget = NEWSV(0,0);
3710 sv_upgrade(PL_toptarget, SVt_PVFM);
3711 sv_setpvn(PL_toptarget, "", 0);
3712 PL_bodytarget = NEWSV(0,0);
3713 sv_upgrade(PL_bodytarget, SVt_PVFM);
3714 sv_setpvn(PL_bodytarget, "", 0);
3715 PL_formtarget = PL_bodytarget;
79cb57f6 3716 thr->errsv = newSVpvn("", 0);
78857c3c 3717 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3718
533c011a 3719 PL_maxscream = -1;
0b94c7bb
GS		 3720 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3721 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3722 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3723 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3724 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3725 PL_regindent = 0;
3726 PL_reginterp_cnt = 0;
5c0ca799 3727
199100c8
MB		 3728 return thr;
3729}
3730#endif /* USE_THREADS */
3731
93a17b20 3732void
864dbfa3 3733Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3734{
971a9dd3 3735 SV *atsv;
57843af0 3736 line_t oldline = CopLINE(PL_curcop);
312caa8e 3737 CV *cv;
22921e25 3738 STRLEN len;
6224f72b 3739 int ret;
db36c5a1 3740 dJMPENV;
93a17b20 3741
76e3520e 3742 while (AvFILL(paramList) >= 0) {
312caa8e 3743 cv = (CV*)av_shift(paramList);
059a8bb7
JH		 3744 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3745 /* save PL_beginav for compiler */
3746 if (! PL_beginav_save)
3747 PL_beginav_save = newAV();
3748 av_push(PL_beginav_save, (SV*)cv);
3749 } else {
3750 SAVEFREESV(cv);
3751 }
14dd3ad8
GS		 3752#ifdef PERL_FLEXIBLE_EXCEPTIONS
3753 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3754#else
3755 JMPENV_PUSH(ret);
3756#endif
6224f72b 3757 switch (ret) {
312caa8e 3758 case 0:
14dd3ad8
GS		 3759#ifndef PERL_FLEXIBLE_EXCEPTIONS
3760 call_list_body(cv);
3761#endif
971a9dd3 3762 atsv = ERRSV;
312caa8e
CS		 3763 (void)SvPV(atsv, len);
3764 if (len) {
971a9dd3 3765 STRLEN n_a;
312caa8e 3766 PL_curcop = &PL_compiling;
57843af0 3767 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3768 if (paramList == PL_beginav)
3769 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3770 else
4f25aa18
GS		 3771 Perl_sv_catpvf(aTHX_ atsv,
3772 "%s failed--call queue aborted",
7d30b5c4 3773 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3774 : paramList == PL_initav ? "INIT"
3775 : "END");
312caa8e
CS		 3776 while (PL_scopestack_ix > oldscope)
3777 LEAVE;
14dd3ad8 3778 JMPENV_POP;
971a9dd3 3779 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3780 }
85e6fe83 3781 break;
6224f72b 3782 case 1:
f86702cc 3783 STATUS_ALL_FAILURE;
85e6fe83 3784 /* FALL THROUGH */
6224f72b 3785 case 2:
85e6fe83 3786 /* my_exit() was called */
3280af22 3787 while (PL_scopestack_ix > oldscope)
2ae324a7 3788 LEAVE;
84902520 3789 FREETMPS;
3280af22 3790 PL_curstash = PL_defstash;
3280af22 3791 PL_curcop = &PL_compiling;
57843af0 3792 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3793 JMPENV_POP;
cc3604b1 3794 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3795 if (paramList == PL_beginav)
cea2e8a9 3796 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3797 else
4f25aa18 3798 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3799 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3800 : paramList == PL_initav ? "INIT"
3801 : "END");
85e6fe83 3802 }
f86702cc 3803 my_exit_jump();
85e6fe83 3804 /* NOTREACHED */
6224f72b 3805 case 3:
312caa8e
CS		 3806 if (PL_restartop) {
3807 PL_curcop = &PL_compiling;
57843af0 3808 CopLINE_set(PL_curcop, oldline);
312caa8e 3809 JMPENV_JUMP(3);
85e6fe83 3810 }
bf49b057 3811 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3812 FREETMPS;
3813 break;
8990e307 3814 }
14dd3ad8 3815 JMPENV_POP;
93a17b20 3816 }
93a17b20 3817}
93a17b20 3818
14dd3ad8 3819#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3820STATIC void *
14dd3ad8 3821S_vcall_list_body(pTHX_ va_list args)
312caa8e 3822{
312caa8e 3823 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3824 return call_list_body(cv);
3825}
3826#endif
312caa8e 3827
14dd3ad8
GS		 3828STATIC void *
3829S_call_list_body(pTHX_ CV *cv)
3830{
312caa8e 3831 PUSHMARK(PL_stack_sp);
864dbfa3 3832 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3833 return NULL;
3834}
3835
f86702cc 3836void
864dbfa3 3837Perl_my_exit(pTHX_ U32 status)
f86702cc 3838{
8b73bbec 3839 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3840 thr, (unsigned long) status));
f86702cc 3841 switch (status) {
3842 case 0:
3843 STATUS_ALL_SUCCESS;
3844 break;
3845 case 1:
3846 STATUS_ALL_FAILURE;
3847 break;
3848 default:
3849 STATUS_NATIVE_SET(status);
3850 break;
3851 }
3852 my_exit_jump();
3853}
3854
3855void
864dbfa3 3856Perl_my_failure_exit(pTHX)
f86702cc 3857{
3858#ifdef VMS
3859 if (vaxc$errno & 1) {
4fdae800 3860 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3861 STATUS_NATIVE_SET(44);
f86702cc 3862 }
3863 else {
ff0cee69 3864 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3865 STATUS_NATIVE_SET(44);
f86702cc 3866 else
4fdae800 3867 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3868 }
3869#else
9b599b2a 3870 int exitstatus;
f86702cc 3871 if (errno & 255)
3872 STATUS_POSIX_SET(errno);
9b599b2a 3873 else {
ac27b0f5 3874 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3875 if (exitstatus & 255)
3876 STATUS_POSIX_SET(exitstatus);
3877 else
3878 STATUS_POSIX_SET(255);
3879 }
f86702cc 3880#endif
3881 my_exit_jump();
93a17b20
LW		 3882}
3883
76e3520e 3884STATIC void
cea2e8a9 3885S_my_exit_jump(pTHX)
f86702cc 3886{
c09156bb 3887 register PERL_CONTEXT *cx;
f86702cc 3888 I32 gimme;
3889 SV **newsp;
3890
3280af22
NIS		 3891 if (PL_e_script) {
3892 SvREFCNT_dec(PL_e_script);
3893 PL_e_script = Nullsv;
f86702cc 3894 }
3895
3280af22 3896 POPSTACK_TO(PL_mainstack);
f86702cc 3897 if (cxstack_ix >= 0) {
3898 if (cxstack_ix > 0)
3899 dounwind(0);
3280af22 3900 POPBLOCK(cx,PL_curpm);
f86702cc 3901 LEAVE;
3902 }
ff0cee69 3903
6224f72b 3904 JMPENV_JUMP(2);
f86702cc 3905}
873ef191 3906
7a5f8e82 3907#ifdef PERL_OBJECT
873ef191 3908#include "XSUB.h"
51371543 3909#endif
873ef191 3910
0cb96387
GS		 3911static I32
3912read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3913{
3914 char *p, *nl;
3280af22 3915 p = SvPVX(PL_e_script);
873ef191 3916 nl = strchr(p, '\n');
3280af22 3917 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3918 if (nl-p == 0) {
0cb96387 3919 filter_del(read_e_script);
873ef191 3920 return 0;
7dfe3f66 3921 }
873ef191 3922 sv_catpvn(buf_sv, p, nl-p);
3280af22 3923 sv_chop(PL_e_script, nl);
873ef191
GS		 3924 return 1;
3925}
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