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VMS specific simplificationfor Pod::Find
[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
GS		 255 s = (U8*)SvPVX(PL_patchlevel);
256 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS		 267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 275#endif
276
52853b95
GS		 277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS		 283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
8990e307 286
8990e307 287 ENTER;
79072805
LW		 288}
289
954c1994
GS		 290/*
291=for apidoc perl_destruct
292
293Shuts down a Perl interpreter. See L<perlembed>.
294
295=cut
296*/
297
79072805 298void
0cb96387 299perl_destruct(pTHXx)
79072805 300{
748a9306 301 int destruct_level; /* 0=none, 1=full, 2=full with checks */
8990e307 302 I32 last_sv_count;
a0d0e21e 303 HV *hv;
1f2bfc8a 304#ifdef USE_THREADS
33f46ff6 305 Thread t;
cea2e8a9 306 dTHX;
1f2bfc8a 307#endif /* USE_THREADS */
8990e307 308
7766f137
GS		 309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
311
11343788 312#ifdef USE_THREADS
0f15f207 313#ifndef FAKE_THREADS
8023c3ce
MB		 314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 retry_cleanup:
533c011a 316 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 317 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 318 "perl_destruct: waiting for %d threads...\n",
533c011a 319 PL_nthreads - 1));
33f46ff6 320 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
323 AV *av;
c7848ba1 324 case THRf_ZOMBIE:
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
533c011a 329 PL_nthreads--;
8023c3ce
MB		 330 /*
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
334 * all over again.
335 */
533c011a 336 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 337 JOIN(t, &av);
605e5515 338 SvREFCNT_dec((SV*)av);
bf49b057 339 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 340 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 341 goto retry_cleanup;
c7848ba1 342 case THRf_R_JOINABLE:
bf49b057 343 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 346 /*
c7848ba1
MB		 347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
351 */
533c011a 352 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 353 DETACH(t);
354 MUTEX_UNLOCK(&t->mutex);
8023c3ce 355 goto retry_cleanup;
c7848ba1 356 default:
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 358 "perl_destruct: ignoring %p (state %u)\n",
359 t, ThrSTATE(t)));
360 MUTEX_UNLOCK(&t->mutex);
c7848ba1 361 /* fall through and out */
33f46ff6
MB		 362 }
363 }
8023c3ce
MB		 364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 367 while (PL_nthreads > 1)
11343788 368 {
bf49b057 369 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 370 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 371 PL_nthreads - 1));
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 373 }
374 /* At this point, we're the last thread */
533c011a 375 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
b57a092c 379 PL_nthreads--;
0f15f207 380#endif /* !defined(FAKE_THREADS) */
11343788
MB		 381#endif /* USE_THREADS */
382
3280af22 383 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 384#ifdef DEBUGGING
385 {
386 char *s;
155aba94 387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 388 int i = atoi(s);
389 if (destruct_level < i)
390 destruct_level = i;
391 }
4633a7c4
LW		 392 }
393#endif
394
8990e307 395 LEAVE;
a0d0e21e
LW		 396 FREETMPS;
397
ff0cee69 398 /* We must account for everything. */
399
400 /* Destroy the main CV and syntax tree */
3280af22
NIS		 401 if (PL_main_root) {
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
a0d0e21e 405 }
3280af22
NIS		 406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
409 PL_main_cv = Nullcv;
24d3c518 410 PL_dirty = TRUE;
ff0cee69 411
3280af22 412 if (PL_sv_objcount) {
a0d0e21e
LW		 413 /*
414 * Try to destruct global references. We do this first so that the
415 * destructors and destructees still exist. Some sv's might remain.
416 * Non-referenced objects are on their own.
417 */
a0d0e21e 418 sv_clean_objs();
8990e307
LW		 419 }
420
5cd24f17 421 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 422 SvREFCNT_dec(PL_warnhook);
423 PL_warnhook = Nullsv;
424 SvREFCNT_dec(PL_diehook);
425 PL_diehook = Nullsv;
5cd24f17 426
4b556e6c 427 /* call exit list functions */
3280af22 428 while (PL_exitlistlen-- > 0)
0cb96387 429 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 430
3280af22 431 Safefree(PL_exitlist);
4b556e6c 432
a0d0e21e 433 if (destruct_level == 0){
8990e307 434
a0d0e21e 435 DEBUG_P(debprofdump());
ac27b0f5 436
a0d0e21e
LW		 437 /* The exit() function will do everything that needs doing. */
438 return;
439 }
5dd60ef7 440
5f05dabc 441 /* loosen bonds of global variables */
442
3280af22
NIS		 443 if(PL_rsfp) {
444 (void)PerlIO_close(PL_rsfp);
445 PL_rsfp = Nullfp;
8ebc5c01 446 }
447
448 /* Filters for program text */
3280af22
NIS		 449 SvREFCNT_dec(PL_rsfp_filters);
450 PL_rsfp_filters = Nullav;
8ebc5c01 451
452 /* switches */
3280af22
NIS		 453 PL_preprocess = FALSE;
454 PL_minus_n = FALSE;
455 PL_minus_p = FALSE;
456 PL_minus_l = FALSE;
457 PL_minus_a = FALSE;
458 PL_minus_F = FALSE;
459 PL_doswitches = FALSE;
599cee73 460 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 461 PL_doextract = FALSE;
462 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 463 PL_unsafe = FALSE;
464
465 Safefree(PL_inplace);
466 PL_inplace = Nullch;
a7cb1f99 467 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 468
469 if (PL_e_script) {
470 SvREFCNT_dec(PL_e_script);
471 PL_e_script = Nullsv;
8ebc5c01 472 }
473
474 /* magical thingies */
475
7889fe52
NIS		 476 SvREFCNT_dec(PL_ofs_sv); /* $, */
477 PL_ofs_sv = Nullsv;
5f05dabc 478
7889fe52
NIS		 479 SvREFCNT_dec(PL_ors_sv); /* $\ */
480 PL_ors_sv = Nullsv;
8ebc5c01 481
3280af22
NIS		 482 SvREFCNT_dec(PL_rs); /* $/ */
483 PL_rs = Nullsv;
dc92893f 484
3280af22
NIS		 485 SvREFCNT_dec(PL_nrs); /* $/ helper */
486 PL_nrs = Nullsv;
5f05dabc 487
d33b2eba
GS		 488 PL_multiline = 0; /* $* */
489 Safefree(PL_osname); /* $^O */
490 PL_osname = Nullch;
5f05dabc 491
3280af22
NIS		 492 SvREFCNT_dec(PL_statname);
493 PL_statname = Nullsv;
494 PL_statgv = Nullgv;
5f05dabc 495
8ebc5c01 496 /* defgv, aka *_ should be taken care of elsewhere */
497
8ebc5c01 498 /* clean up after study() */
3280af22
NIS		 499 SvREFCNT_dec(PL_lastscream);
500 PL_lastscream = Nullsv;
501 Safefree(PL_screamfirst);
502 PL_screamfirst = 0;
503 Safefree(PL_screamnext);
504 PL_screamnext = 0;
8ebc5c01 505
7d5ea4e7
GS		 506 /* float buffer */
507 Safefree(PL_efloatbuf);
508 PL_efloatbuf = Nullch;
509 PL_efloatsize = 0;
510
8ebc5c01 511 /* startup and shutdown function lists */
3280af22
NIS		 512 SvREFCNT_dec(PL_beginav);
513 SvREFCNT_dec(PL_endav);
7d30b5c4 514 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 515 SvREFCNT_dec(PL_initav);
516 PL_beginav = Nullav;
517 PL_endav = Nullav;
7d30b5c4 518 PL_checkav = Nullav;
3280af22 519 PL_initav = Nullav;
5618dfe8 520
8ebc5c01 521 /* shortcuts just get cleared */
3280af22 522 PL_envgv = Nullgv;
3280af22
NIS		 523 PL_incgv = Nullgv;
524 PL_hintgv = Nullgv;
525 PL_errgv = Nullgv;
526 PL_argvgv = Nullgv;
527 PL_argvoutgv = Nullgv;
528 PL_stdingv = Nullgv;
bf49b057 529 PL_stderrgv = Nullgv;
3280af22
NIS		 530 PL_last_in_gv = Nullgv;
531 PL_replgv = Nullgv;
5c831c24 532 PL_debstash = Nullhv;
8ebc5c01 533
534 /* reset so print() ends up where we expect */
535 setdefout(Nullgv);
5c831c24 536
7a1c5554
GS		 537 SvREFCNT_dec(PL_argvout_stack);
538 PL_argvout_stack = Nullav;
8ebc5c01 539
5c831c24
GS		 540 SvREFCNT_dec(PL_modglobal);
541 PL_modglobal = Nullhv;
542 SvREFCNT_dec(PL_preambleav);
543 PL_preambleav = Nullav;
544 SvREFCNT_dec(PL_subname);
545 PL_subname = Nullsv;
546 SvREFCNT_dec(PL_linestr);
547 PL_linestr = Nullsv;
548 SvREFCNT_dec(PL_pidstatus);
549 PL_pidstatus = Nullhv;
550 SvREFCNT_dec(PL_toptarget);
551 PL_toptarget = Nullsv;
552 SvREFCNT_dec(PL_bodytarget);
553 PL_bodytarget = Nullsv;
554 PL_formtarget = Nullsv;
555
d33b2eba 556 /* free locale stuff */
b9582b6a 557#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 558 Safefree(PL_collation_name);
559 PL_collation_name = Nullch;
b9582b6a 560#endif
d33b2eba 561
b9582b6a 562#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 563 Safefree(PL_numeric_name);
564 PL_numeric_name = Nullch;
eff180cd 565 SvREFCNT_dec(PL_numeric_radix);
b9582b6a 566#endif
d33b2eba 567
5c831c24
GS		 568 /* clear utf8 character classes */
569 SvREFCNT_dec(PL_utf8_alnum);
570 SvREFCNT_dec(PL_utf8_alnumc);
571 SvREFCNT_dec(PL_utf8_ascii);
572 SvREFCNT_dec(PL_utf8_alpha);
573 SvREFCNT_dec(PL_utf8_space);
574 SvREFCNT_dec(PL_utf8_cntrl);
575 SvREFCNT_dec(PL_utf8_graph);
576 SvREFCNT_dec(PL_utf8_digit);
577 SvREFCNT_dec(PL_utf8_upper);
578 SvREFCNT_dec(PL_utf8_lower);
579 SvREFCNT_dec(PL_utf8_print);
580 SvREFCNT_dec(PL_utf8_punct);
581 SvREFCNT_dec(PL_utf8_xdigit);
582 SvREFCNT_dec(PL_utf8_mark);
583 SvREFCNT_dec(PL_utf8_toupper);
584 SvREFCNT_dec(PL_utf8_tolower);
585 PL_utf8_alnum = Nullsv;
586 PL_utf8_alnumc = Nullsv;
587 PL_utf8_ascii = Nullsv;
588 PL_utf8_alpha = Nullsv;
589 PL_utf8_space = Nullsv;
590 PL_utf8_cntrl = Nullsv;
591 PL_utf8_graph = Nullsv;
592 PL_utf8_digit = Nullsv;
593 PL_utf8_upper = Nullsv;
594 PL_utf8_lower = Nullsv;
595 PL_utf8_print = Nullsv;
596 PL_utf8_punct = Nullsv;
597 PL_utf8_xdigit = Nullsv;
598 PL_utf8_mark = Nullsv;
599 PL_utf8_toupper = Nullsv;
600 PL_utf8_totitle = Nullsv;
601 PL_utf8_tolower = Nullsv;
602
971a9dd3
GS		 603 if (!specialWARN(PL_compiling.cop_warnings))
604 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 605 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 606 if (!specialCopIO(PL_compiling.cop_io))
607 SvREFCNT_dec(PL_compiling.cop_io);
608 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 609#ifdef USE_ITHREADS
610 Safefree(CopFILE(&PL_compiling));
611 CopFILE(&PL_compiling) = Nullch;
612 Safefree(CopSTASHPV(&PL_compiling));
613#else
01724ea0 614 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 615 CopFILEGV(&PL_compiling) = Nullgv;
616 /* cop_stash is not refcounted */
01724ea0 617#endif
5c831c24 618
a0d0e21e 619 /* Prepare to destruct main symbol table. */
5f05dabc 620
3280af22
NIS		 621 hv = PL_defstash;
622 PL_defstash = 0;
a0d0e21e 623 SvREFCNT_dec(hv);
5c831c24
GS		 624 SvREFCNT_dec(PL_curstname);
625 PL_curstname = Nullsv;
a0d0e21e 626
5a844595
GS		 627 /* clear queued errors */
628 SvREFCNT_dec(PL_errors);
629 PL_errors = Nullsv;
630
a0d0e21e 631 FREETMPS;
0453d815 632 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 633 if (PL_scopestack_ix != 0)
0453d815
PM		 634 Perl_warner(aTHX_ WARN_INTERNAL,
635 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 636 (long)PL_scopestack_ix);
637 if (PL_savestack_ix != 0)
0453d815
PM		 638 Perl_warner(aTHX_ WARN_INTERNAL,
639 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 640 (long)PL_savestack_ix);
641 if (PL_tmps_floor != -1)
0453d815 642 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 643 (long)PL_tmps_floor + 1);
a0d0e21e 644 if (cxstack_ix != -1)
0453d815 645 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 646 (long)cxstack_ix + 1);
a0d0e21e 647 }
8990e307
LW		 648
649 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 650 last_sv_count = 0;
d33b2eba 651 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22
NIS		 652 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
653 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
654 last_sv_count = PL_sv_count;
8990e307
LW		 655 sv_clean_all();
656 }
d33b2eba
GS		 657 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
658 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 659 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
660 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 661
d4777f27
GS		 662 AvREAL_off(PL_fdpid); /* no surviving entries */
663 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 664 PL_fdpid = Nullav;
665
6c644e78
GS		 666#ifdef HAVE_INTERP_INTERN
667 sys_intern_clear();
668#endif
669
6e72f9df 670 /* Destruct the global string table. */
671 {
672 /* Yell and reset the HeVAL() slots that are still holding refcounts,
673 * so that sv_free() won't fail on them.
674 */
675 I32 riter;
676 I32 max;
677 HE *hent;
678 HE **array;
679
680 riter = 0;
3280af22
NIS		 681 max = HvMAX(PL_strtab);
682 array = HvARRAY(PL_strtab);
6e72f9df 683 hent = array[0];
684 for (;;) {
0453d815
PM		 685 if (hent && ckWARN_d(WARN_INTERNAL)) {
686 Perl_warner(aTHX_ WARN_INTERNAL,
687 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 688 HeVAL(hent) - Nullsv, HeKEY(hent));
689 HeVAL(hent) = Nullsv;
690 hent = HeNEXT(hent);
691 }
692 if (!hent) {
693 if (++riter > max)
694 break;
695 hent = array[riter];
696 }
697 }
698 }
3280af22 699 SvREFCNT_dec(PL_strtab);
6e72f9df 700
d33b2eba
GS		 701 /* free special SVs */
702
703 SvREFCNT(&PL_sv_yes) = 0;
704 sv_clear(&PL_sv_yes);
705 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 706 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 707
708 SvREFCNT(&PL_sv_no) = 0;
709 sv_clear(&PL_sv_no);
710 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 711 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 712
713 SvREFCNT(&PL_sv_undef) = 0;
714 SvREADONLY_off(&PL_sv_undef);
d33b2eba 715
0453d815
PM		 716 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
717 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 718
3280af22 719 Safefree(PL_origfilename);
3280af22 720 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 721 if (PL_reg_curpm)
722 Safefree(PL_reg_curpm);
82ba1be6 723 Safefree(PL_reg_poscache);
3280af22
NIS		 724 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
725 Safefree(PL_op_mask);
cf36064f
GS		 726 Safefree(PL_psig_ptr);
727 Safefree(PL_psig_name);
ce08f86c 728 Safefree(PL_psig_pend);
6e72f9df 729 nuke_stacks();
3280af22 730 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 731
a0d0e21e 732 DEBUG_P(debprofdump());
11343788 733#ifdef USE_THREADS
5f08fbcd 734 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 735 MUTEX_DESTROY(&PL_sv_mutex);
736 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 737 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 738 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 739 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 740#ifdef EMULATE_ATOMIC_REFCOUNTS
741 MUTEX_DESTROY(&PL_svref_mutex);
742#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 743
8023c3ce 744 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 745 Safefree(SvPVX(PL_thrsv));
746 Safefree(SvANY(PL_thrsv));
747 Safefree(PL_thrsv);
748 PL_thrsv = Nullsv;
8023c3ce 749#endif /* USE_THREADS */
d33b2eba 750
612f20c3
GS		 751 sv_free_arenas();
752
fc36a67e 753 /* As the absolutely last thing, free the non-arena SV for mess() */
754
3280af22 755 if (PL_mess_sv) {
9c63abab
GS		 756 /* it could have accumulated taint magic */
757 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
758 MAGIC* mg;
759 MAGIC* moremagic;
760 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
761 moremagic = mg->mg_moremagic;
762 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
763 Safefree(mg->mg_ptr);
764 Safefree(mg);
765 }
766 }
fc36a67e 767 /* we know that type >= SVt_PV */
155aba94 768 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 769 Safefree(SvPVX(PL_mess_sv));
770 Safefree(SvANY(PL_mess_sv));
771 Safefree(PL_mess_sv);
772 PL_mess_sv = Nullsv;
fc36a67e 773 }
79072805
LW		 774}
775
954c1994
GS		 776/*
777=for apidoc perl_free
778
779Releases a Perl interpreter. See L<perlembed>.
780
781=cut
782*/
783
79072805 784void
0cb96387 785perl_free(pTHXx)
79072805 786{
c5be433b 787#if defined(PERL_OBJECT)
7f0d82f7 788 PerlMem_free(this);
76e3520e 789#else
ce3e5b80
NIS		 790# if defined(WIN32)
791# if defined(PERL_IMPLICIT_SYS)
1c0ca838 792 void *host = w32_internal_host;
ba247512 793 if (PerlProc_lasthost()) {
ce08f86c 794 PerlIO_cleanup();
ba247512 795 }
7f0d82f7 796 PerlMem_free(aTHXx);
1c0ca838 797 win32_delete_internal_host(host);
ce3e5b80 798#else
ce08f86c 799 PerlIO_cleanup();
ce3e5b80
NIS		 800 PerlMem_free(aTHXx);
801#endif
1c0ca838
GS		 802# else
803 PerlMem_free(aTHXx);
804# endif
76e3520e 805#endif
79072805
LW		 806}
807
4b556e6c 808void
864dbfa3 809Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 810{
3280af22
NIS		 811 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
812 PL_exitlist[PL_exitlistlen].fn = fn;
813 PL_exitlist[PL_exitlistlen].ptr = ptr;
814 ++PL_exitlistlen;
4b556e6c
JD		 815}
816
954c1994
GS		 817/*
818=for apidoc perl_parse
819
820Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
821
822=cut
823*/
824
79072805 825int
0cb96387 826perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 827{
6224f72b 828 I32 oldscope;
6224f72b 829 int ret;
db36c5a1 830 dJMPENV;
cea2e8a9
GS		 831#ifdef USE_THREADS
832 dTHX;
833#endif
8d063cd8 834
a687059c
LW		 835#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
836#ifdef IAMSUID
837#undef IAMSUID
cea2e8a9 838 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 839setuid perl scripts securely.\n");
840#endif
841#endif
842
8f1f23e8 843#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 844 _dyld_lookup_and_bind
845 ("__environ", (unsigned long *) &environ_pointer, NULL);
846#endif /* environ */
847
3280af22
NIS		 848 PL_origargv = argv;
849 PL_origargc = argc;
fa6a1c44 850#ifdef USE_ENVIRON_ARRAY
3280af22 851 PL_origenviron = environ;
a0d0e21e
LW		 852#endif
853
3280af22 854 if (PL_do_undump) {
a0d0e21e
LW		 855
856 /* Come here if running an undumped a.out. */
857
3280af22
NIS		 858 PL_origfilename = savepv(argv[0]);
859 PL_do_undump = FALSE;
a0d0e21e 860 cxstack_ix = -1; /* start label stack again */
748a9306 861 init_ids();
a0d0e21e
LW		 862 init_postdump_symbols(argc,argv,env);
863 return 0;
864 }
865
3280af22
NIS		 866 if (PL_main_root) {
867 PL_curpad = AvARRAY(PL_comppad);
868 op_free(PL_main_root);
869 PL_main_root = Nullop;
ff0cee69 870 }
3280af22
NIS		 871 PL_main_start = Nullop;
872 SvREFCNT_dec(PL_main_cv);
873 PL_main_cv = Nullcv;
79072805 874
3280af22
NIS		 875 time(&PL_basetime);
876 oldscope = PL_scopestack_ix;
599cee73 877 PL_dowarn = G_WARN_OFF;
f86702cc 878
14dd3ad8
GS		 879#ifdef PERL_FLEXIBLE_EXCEPTIONS
880 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
881#else
882 JMPENV_PUSH(ret);
883#endif
6224f72b 884 switch (ret) {
312caa8e 885 case 0:
14dd3ad8
GS		 886#ifndef PERL_FLEXIBLE_EXCEPTIONS
887 parse_body(env,xsinit);
888#endif
7d30b5c4
GS		 889 if (PL_checkav)
890 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 891 ret = 0;
892 break;
6224f72b
GS		 893 case 1:
894 STATUS_ALL_FAILURE;
895 /* FALL THROUGH */
896 case 2:
897 /* my_exit() was called */
3280af22 898 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 899 LEAVE;
900 FREETMPS;
3280af22 901 PL_curstash = PL_defstash;
7d30b5c4
GS		 902 if (PL_checkav)
903 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 904 ret = STATUS_NATIVE_EXPORT;
905 break;
6224f72b 906 case 3:
bf49b057 907 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 908 ret = 1;
909 break;
6224f72b 910 }
14dd3ad8
GS		 911 JMPENV_POP;
912 return ret;
913}
914
915#ifdef PERL_FLEXIBLE_EXCEPTIONS
916STATIC void *
917S_vparse_body(pTHX_ va_list args)
918{
919 char **env = va_arg(args, char**);
920 XSINIT_t xsinit = va_arg(args, XSINIT_t);
921
922 return parse_body(env, xsinit);
312caa8e 923}
14dd3ad8 924#endif
312caa8e
CS		 925
926STATIC void *
14dd3ad8 927S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 928{
312caa8e
CS		 929 int argc = PL_origargc;
930 char **argv = PL_origargv;
312caa8e
CS		 931 char *scriptname = NULL;
932 int fdscript = -1;
933 VOL bool dosearch = FALSE;
934 char *validarg = "";
935 AV* comppadlist;
936 register SV *sv;
937 register char *s;
f4c556ac 938 char *cddir = Nullch;
312caa8e 939
3280af22 940 sv_setpvn(PL_linestr,"",0);
79cb57f6 941 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 942 SAVEFREESV(sv);
943 init_main_stash();
54310121 944
6224f72b
GS		 945 for (argc--,argv++; argc > 0; argc--,argv++) {
946 if (argv[0][0] != '-' || !argv[0][1])
947 break;
948#ifdef DOSUID
949 if (*validarg)
950 validarg = " PHOOEY ";
951 else
952 validarg = argv[0];
13281fa4 953#endif
6224f72b
GS		 954 s = argv[0]+1;
955 reswitch:
956 switch (*s) {
729a02f2
GS		 957 case 'C':
958#ifdef WIN32
c0932edc 959 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 960 /* FALL THROUGH */
961#endif
1d5472a9
GS		 962#ifndef PERL_STRICT_CR
963 case '\r':
964#endif
6224f72b
GS		 965 case ' ':
966 case '0':
967 case 'F':
968 case 'a':
969 case 'c':
970 case 'd':
971 case 'D':
972 case 'h':
973 case 'i':
974 case 'l':
975 case 'M':
976 case 'm':
977 case 'n':
978 case 'p':
979 case 's':
980 case 'u':
981 case 'U':
982 case 'v':
599cee73
PM		 983 case 'W':
984 case 'X':
6224f72b 985 case 'w':
155aba94 986 if ((s = moreswitches(s)))
6224f72b
GS		 987 goto reswitch;
988 break;
33b78306 989
6224f72b 990 case 'T':
3280af22 991 PL_tainting = TRUE;
6224f72b
GS		 992 s++;
993 goto reswitch;
f86702cc 994
6224f72b 995 case 'e':
bf4acbe4
GS		 996#ifdef MACOS_TRADITIONAL
997 /* ignore -e for Dev:Pseudo argument */
998 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 999 break;
bf4acbe4 1000#endif
3280af22 1001 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1002 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1003 if (!PL_e_script) {
79cb57f6 1004 PL_e_script = newSVpvn("",0);
0cb96387 1005 filter_add(read_e_script, NULL);
6224f72b
GS		 1006 }
1007 if (*++s)
3280af22 1008 sv_catpv(PL_e_script, s);
6224f72b 1009 else if (argv[1]) {
3280af22 1010 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1011 argc--,argv++;
1012 }
1013 else
cea2e8a9 1014 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1015 sv_catpv(PL_e_script, "\n");
6224f72b 1016 break;
afe37c7d 1017
6224f72b
GS		 1018 case 'I': /* -I handled both here and in moreswitches() */
1019 forbid_setid("-I");
1020 if (!*++s && (s=argv[1]) != Nullch) {
1021 argc--,argv++;
1022 }
6224f72b 1023 if (s && *s) {
0df16ed7
GS		 1024 char *p;
1025 STRLEN len = strlen(s);
1026 p = savepvn(s, len);
9c8a64f0 1027 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1028 sv_catpvn(sv, "-I", 2);
1029 sv_catpvn(sv, p, len);
1030 sv_catpvn(sv, " ", 1);
6224f72b 1031 Safefree(p);
0df16ed7
GS		 1032 }
1033 else
a67e862a 1034 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1035 break;
1036 case 'P':
1037 forbid_setid("-P");
3280af22 1038 PL_preprocess = TRUE;
6224f72b
GS		 1039 s++;
1040 goto reswitch;
1041 case 'S':
1042 forbid_setid("-S");
1043 dosearch = TRUE;
1044 s++;
1045 goto reswitch;
1046 case 'V':
3280af22
NIS		 1047 if (!PL_preambleav)
1048 PL_preambleav = newAV();
1049 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1050 if (*++s != ':') {
3280af22 1051 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1052#ifdef VMS
6b88bc9c 1053 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1054#else
3280af22 1055 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1056#endif
3280af22 1057 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1058# ifdef DEBUGGING
3280af22 1059 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1060# endif
6224f72b 1061# ifdef MULTIPLICITY
8f872242 1062 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1063# endif
b363f7ed
GS		 1064# ifdef USE_THREADS
1065 sv_catpv(PL_Sv," USE_THREADS");
1066# endif
ac5e8965
JH		 1067# ifdef USE_ITHREADS
1068 sv_catpv(PL_Sv," USE_ITHREADS");
1069# endif
10cc9d2a
JH		 1070# ifdef USE_64_BIT_INT
1071 sv_catpv(PL_Sv," USE_64_BIT_INT");
1072# endif
1073# ifdef USE_64_BIT_ALL
1074 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1075# endif
1076# ifdef USE_LONG_DOUBLE
1077 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1078# endif
53430762
JH		 1079# ifdef USE_LARGE_FILES
1080 sv_catpv(PL_Sv," USE_LARGE_FILES");
1081# endif
ac5e8965
JH		 1082# ifdef USE_SOCKS
1083 sv_catpv(PL_Sv," USE_SOCKS");
1084# endif
b363f7ed
GS		 1085# ifdef PERL_OBJECT
1086 sv_catpv(PL_Sv," PERL_OBJECT");
1087# endif
1088# ifdef PERL_IMPLICIT_CONTEXT
1089 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1090# endif
1091# ifdef PERL_IMPLICIT_SYS
1092 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1093# endif
3280af22 1094 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1095
6224f72b
GS		 1096#if defined(LOCAL_PATCH_COUNT)
1097 if (LOCAL_PATCH_COUNT > 0) {
1098 int i;
3280af22 1099 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1100 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1101 if (PL_localpatches[i])
cea2e8a9 1102 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1103 }
1104 }
1105#endif
cea2e8a9 1106 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1107#ifdef __DATE__
1108# ifdef __TIME__
cea2e8a9 1109 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1110# else
cea2e8a9 1111 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1112# endif
1113#endif
3280af22 1114 sv_catpv(PL_Sv, "; \
6224f72b
GS		 1115$\"=\"\\n \"; \
1116@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1117print \" \\%ENV:\\n @env\\n\" if @env; \
1118print \" \\@INC:\\n @INC\\n\";");
1119 }
1120 else {
3280af22
NIS		 1121 PL_Sv = newSVpv("config_vars(qw(",0);
1122 sv_catpv(PL_Sv, ++s);
1123 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1124 s += strlen(s);
1125 }
3280af22 1126 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1127 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1128 goto reswitch;
1129 case 'x':
3280af22 1130 PL_doextract = TRUE;
6224f72b
GS		 1131 s++;
1132 if (*s)
f4c556ac 1133 cddir = s;
6224f72b
GS		 1134 break;
1135 case 0:
1136 break;
1137 case '-':
1138 if (!*++s || isSPACE(*s)) {
1139 argc--,argv++;
1140 goto switch_end;
1141 }
1142 /* catch use of gnu style long options */
1143 if (strEQ(s, "version")) {
1144 s = "v";
1145 goto reswitch;
1146 }
1147 if (strEQ(s, "help")) {
1148 s = "h";
1149 goto reswitch;
1150 }
1151 s--;
1152 /* FALL THROUGH */
1153 default:
cea2e8a9 1154 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1155 }
1156 }
6224f72b 1157 switch_end:
54310121 1158
f675dbe5
CB		 1159 if (
1160#ifndef SECURE_INTERNAL_GETENV
1161 !PL_tainting &&
1162#endif
0df16ed7
GS		 1163 (s = PerlEnv_getenv("PERL5OPT")))
1164 {
74288ac8
GS		 1165 while (isSPACE(*s))
1166 s++;
1167 if (*s == '-' && *(s+1) == 'T')
1168 PL_tainting = TRUE;
1169 else {
1170 while (s && *s) {
1171 while (isSPACE(*s))
1172 s++;
1173 if (*s == '-') {
1174 s++;
1175 if (isSPACE(*s))
1176 continue;
1177 }
1178 if (!*s)
1179 break;
1180 if (!strchr("DIMUdmw", *s))
cea2e8a9 1181 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 1182 s = moreswitches(s);
6224f72b 1183 }
6224f72b
GS		 1184 }
1185 }
a0d0e21e 1186
6224f72b
GS		 1187 if (!scriptname)
1188 scriptname = argv[0];
3280af22 1189 if (PL_e_script) {
6224f72b
GS		 1190 argc++,argv--;
1191 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1192 }
1193 else if (scriptname == Nullch) {
1194#ifdef MSDOS
1195 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1196 moreswitches("h");
1197#endif
1198 scriptname = "-";
1199 }
1200
1201 init_perllib();
1202
1203 open_script(scriptname,dosearch,sv,&fdscript);
1204
1205 validate_suid(validarg, scriptname,fdscript);
1206
64ca3a65 1207#ifndef PERL_MICRO
0b5b802d
GS		 1208#if defined(SIGCHLD) || defined(SIGCLD)
1209 {
1210#ifndef SIGCHLD
1211# define SIGCHLD SIGCLD
1212#endif
1213 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1214 if (sigstate == SIG_IGN) {
1215 if (ckWARN(WARN_SIGNAL))
1216 Perl_warner(aTHX_ WARN_SIGNAL,
1217 "Can't ignore signal CHLD, forcing to default");
1218 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1219 }
1220 }
1221#endif
64ca3a65 1222#endif
0b5b802d 1223
bf4acbe4
GS		 1224#ifdef MACOS_TRADITIONAL
1225 if (PL_doextract || gMacPerl_AlwaysExtract) {
1226#else
f4c556ac 1227 if (PL_doextract) {
bf4acbe4 1228#endif
6224f72b 1229 find_beginning();
f4c556ac
GS		 1230 if (cddir && PerlDir_chdir(cddir) < 0)
1231 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1232
1233 }
6224f72b 1234
3280af22
NIS		 1235 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1236 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1237 CvUNIQUE_on(PL_compcv);
1238
1239 PL_comppad = newAV();
1240 av_push(PL_comppad, Nullsv);
1241 PL_curpad = AvARRAY(PL_comppad);
1242 PL_comppad_name = newAV();
1243 PL_comppad_name_fill = 0;
1244 PL_min_intro_pending = 0;
1245 PL_padix = 0;
6224f72b 1246#ifdef USE_THREADS
79cb57f6 1247 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1248 PL_curpad[0] = (SV*)newAV();
1249 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1250 CvOWNER(PL_compcv) = 0;
1251 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1252 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1253#endif /* USE_THREADS */
1254
1255 comppadlist = newAV();
1256 AvREAL_off(comppadlist);
3280af22
NIS		 1257 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1258 av_store(comppadlist, 1, (SV*)PL_comppad);
1259 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1260
1261 boot_core_UNIVERSAL();
9a34ef1d 1262#ifndef PERL_MICRO
09bef843 1263 boot_core_xsutils();
9a34ef1d 1264#endif
6224f72b
GS		 1265
1266 if (xsinit)
0cb96387 1267 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1268#ifndef PERL_MICRO
ed79a026 1269#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1270 init_os_extras();
6224f72b 1271#endif
64ca3a65 1272#endif
6224f72b 1273
29209bc5 1274#ifdef USE_SOCKS
1b9c9cf5
DH		 1275# ifdef HAS_SOCKS5_INIT
1276 socks5_init(argv[0]);
1277# else
29209bc5 1278 SOCKSinit(argv[0]);
1b9c9cf5 1279# endif
ac27b0f5 1280#endif
29209bc5 1281
6224f72b
GS		 1282 init_predump_symbols();
1283 /* init_postdump_symbols not currently designed to be called */
1284 /* more than once (ENV isn't cleared first, for example) */
1285 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1286 if (!PL_do_undump)
6224f72b
GS		 1287 init_postdump_symbols(argc,argv,env);
1288
1289 init_lexer();
1290
1291 /* now parse the script */
1292
1293 SETERRNO(0,SS$_NORMAL);
3280af22 1294 PL_error_count = 0;
bf4acbe4
GS		 1295#ifdef MACOS_TRADITIONAL
1296 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1297 if (PL_minus_c)
1298 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1299 else {
1300 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1301 MacPerl_MPWFileName(PL_origfilename));
1302 }
1303 }
1304#else
3280af22
NIS		 1305 if (yyparse() || PL_error_count) {
1306 if (PL_minus_c)
cea2e8a9 1307 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1308 else {
cea2e8a9 1309 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1310 PL_origfilename);
6224f72b
GS		 1311 }
1312 }
bf4acbe4 1313#endif
57843af0 1314 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1315 PL_curstash = PL_defstash;
1316 PL_preprocess = FALSE;
1317 if (PL_e_script) {
1318 SvREFCNT_dec(PL_e_script);
1319 PL_e_script = Nullsv;
6224f72b
GS		 1320 }
1321
1322 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1323 SvREFCNT_dec(PL_rs);
1324 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1325 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1326 if (PL_do_undump)
6224f72b
GS		 1327 my_unexec();
1328
57843af0
GS		 1329 if (isWARN_ONCE) {
1330 SAVECOPFILE(PL_curcop);
1331 SAVECOPLINE(PL_curcop);
3280af22 1332 gv_check(PL_defstash);
57843af0 1333 }
6224f72b
GS		 1334
1335 LEAVE;
1336 FREETMPS;
1337
1338#ifdef MYMALLOC
1339 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1340 dump_mstats("after compilation:");
1341#endif
1342
1343 ENTER;
3280af22 1344 PL_restartop = 0;
312caa8e 1345 return NULL;
6224f72b
GS		 1346}
1347
954c1994
GS		 1348/*
1349=for apidoc perl_run
1350
1351Tells a Perl interpreter to run. See L<perlembed>.
1352
1353=cut
1354*/
1355
6224f72b 1356int
0cb96387 1357perl_run(pTHXx)
6224f72b 1358{
6224f72b 1359 I32 oldscope;
14dd3ad8 1360 int ret = 0;
db36c5a1 1361 dJMPENV;
cea2e8a9
GS		 1362#ifdef USE_THREADS
1363 dTHX;
1364#endif
6224f72b 1365
3280af22 1366 oldscope = PL_scopestack_ix;
6224f72b 1367
14dd3ad8 1368#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1369 redo_body:
14dd3ad8
GS		 1370 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1371#else
1372 JMPENV_PUSH(ret);
1373#endif
6224f72b
GS		 1374 switch (ret) {
1375 case 1:
1376 cxstack_ix = -1; /* start context stack again */
312caa8e 1377 goto redo_body;
14dd3ad8
GS		 1378 case 0: /* normal completion */
1379#ifndef PERL_FLEXIBLE_EXCEPTIONS
1380 redo_body:
1381 run_body(oldscope);
1382#endif
1383 /* FALL THROUGH */
1384 case 2: /* my_exit() */
3280af22 1385 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1386 LEAVE;
1387 FREETMPS;
3280af22 1388 PL_curstash = PL_defstash;
865be832 1389 if (PL_endav && !PL_minus_c)
3280af22 1390 call_list(oldscope, PL_endav);
6224f72b
GS		 1391#ifdef MYMALLOC
1392 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1393 dump_mstats("after execution: ");
1394#endif
14dd3ad8
GS		 1395 ret = STATUS_NATIVE_EXPORT;
1396 break;
6224f72b 1397 case 3:
312caa8e
CS		 1398 if (PL_restartop) {
1399 POPSTACK_TO(PL_mainstack);
1400 goto redo_body;
6224f72b 1401 }
bf49b057 1402 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1403 FREETMPS;
14dd3ad8
GS		 1404 ret = 1;
1405 break;
6224f72b
GS		 1406 }
1407
14dd3ad8
GS		 1408 JMPENV_POP;
1409 return ret;
312caa8e
CS		 1410}
1411
14dd3ad8 1412#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1413STATIC void *
14dd3ad8 1414S_vrun_body(pTHX_ va_list args)
312caa8e 1415{
312caa8e
CS		 1416 I32 oldscope = va_arg(args, I32);
1417
14dd3ad8
GS		 1418 return run_body(oldscope);
1419}
1420#endif
1421
1422
1423STATIC void *
1424S_run_body(pTHX_ I32 oldscope)
1425{
6224f72b 1426 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1427 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1428
3280af22 1429 if (!PL_restartop) {
6224f72b
GS		 1430 DEBUG_x(dump_all());
1431 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1432 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1433 PTR2UV(thr)));
6224f72b 1434
3280af22 1435 if (PL_minus_c) {
bf4acbe4
GS		 1436#ifdef MACOS_TRADITIONAL
1437 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1438#else
bf49b057 1439 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1440#endif
6224f72b
GS		 1441 my_exit(0);
1442 }
3280af22 1443 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1444 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1445 if (PL_initav)
1446 call_list(oldscope, PL_initav);
6224f72b
GS		 1447 }
1448
1449 /* do it */
1450
3280af22 1451 if (PL_restartop) {
533c011a 1452 PL_op = PL_restartop;
3280af22 1453 PL_restartop = 0;
cea2e8a9 1454 CALLRUNOPS(aTHX);
6224f72b 1455 }
3280af22
NIS		 1456 else if (PL_main_start) {
1457 CvDEPTH(PL_main_cv) = 1;
533c011a 1458 PL_op = PL_main_start;
cea2e8a9 1459 CALLRUNOPS(aTHX);
6224f72b
GS		 1460 }
1461
f6b3007c
JH		 1462 my_exit(0);
1463 /* NOTREACHED */
312caa8e 1464 return NULL;
6224f72b
GS		 1465}
1466
954c1994
GS		 1467/*
1468=for apidoc p||get_sv
1469
1470Returns the SV of the specified Perl scalar. If C<create> is set and the
1471Perl variable does not exist then it will be created. If C<create> is not
1472set and the variable does not exist then NULL is returned.
1473
1474=cut
1475*/
1476
6224f72b 1477SV*
864dbfa3 1478Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1479{
1480 GV *gv;
1481#ifdef USE_THREADS
1482 if (name[1] == '\0' && !isALPHA(name[0])) {
1483 PADOFFSET tmp = find_threadsv(name);
411caa50 1484 if (tmp != NOT_IN_PAD)
6224f72b 1485 return THREADSV(tmp);
6224f72b
GS		 1486 }
1487#endif /* USE_THREADS */
1488 gv = gv_fetchpv(name, create, SVt_PV);
1489 if (gv)
1490 return GvSV(gv);
1491 return Nullsv;
1492}
1493
954c1994
GS		 1494/*
1495=for apidoc p||get_av
1496
1497Returns the AV of the specified Perl array. If C<create> is set and the
1498Perl variable does not exist then it will be created. If C<create> is not
1499set and the variable does not exist then NULL is returned.
1500
1501=cut
1502*/
1503
6224f72b 1504AV*
864dbfa3 1505Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1506{
1507 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1508 if (create)
1509 return GvAVn(gv);
1510 if (gv)
1511 return GvAV(gv);
1512 return Nullav;
1513}
1514
954c1994
GS		 1515/*
1516=for apidoc p||get_hv
1517
1518Returns the HV of the specified Perl hash. If C<create> is set and the
1519Perl variable does not exist then it will be created. If C<create> is not
1520set and the variable does not exist then NULL is returned.
1521
1522=cut
1523*/
1524
6224f72b 1525HV*
864dbfa3 1526Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1527{
a0d0e21e
LW		 1528 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1529 if (create)
1530 return GvHVn(gv);
1531 if (gv)
1532 return GvHV(gv);
1533 return Nullhv;
1534}
1535
954c1994
GS		 1536/*
1537=for apidoc p||get_cv
1538
1539Returns the CV of the specified Perl subroutine. If C<create> is set and
1540the Perl subroutine does not exist then it will be declared (which has the
1541same effect as saying C<sub name;>). If C<create> is not set and the
1542subroutine does not exist then NULL is returned.
1543
1544=cut
1545*/
1546
a0d0e21e 1547CV*
864dbfa3 1548Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1549{
1550 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1551 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1552 /* XXX this is probably not what they think they're getting.
1553 * It has the same effect as "sub name;", i.e. just a forward
1554 * declaration! */
8ebc5c01 1555 if (create && !GvCVu(gv))
774d564b 1556 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1557 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1558 Nullop,
a0d0e21e
LW		 1559 Nullop);
1560 if (gv)
8ebc5c01 1561 return GvCVu(gv);
a0d0e21e
LW		 1562 return Nullcv;
1563}
1564
79072805
LW		 1565/* Be sure to refetch the stack pointer after calling these routines. */
1566
954c1994
GS		 1567/*
1568=for apidoc p||call_argv
1569
1570Performs a callback to the specified Perl sub. See L<perlcall>.
1571
1572=cut
1573*/
1574
a0d0e21e 1575I32
864dbfa3 1576Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1577
8ac85365
NIS		 1578 /* See G_* flags in cop.h */
1579 /* null terminated arg list */
8990e307 1580{
a0d0e21e 1581 dSP;
8990e307 1582
924508f0 1583 PUSHMARK(SP);
a0d0e21e 1584 if (argv) {
8990e307 1585 while (*argv) {
a0d0e21e 1586 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1587 argv++;
1588 }
a0d0e21e 1589 PUTBACK;
8990e307 1590 }
864dbfa3 1591 return call_pv(sub_name, flags);
8990e307
LW		 1592}
1593
954c1994
GS		 1594/*
1595=for apidoc p||call_pv
1596
1597Performs a callback to the specified Perl sub. See L<perlcall>.
1598
1599=cut
1600*/
1601
a0d0e21e 1602I32
864dbfa3 1603Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1604 /* name of the subroutine */
1605 /* See G_* flags in cop.h */
a0d0e21e 1606{
864dbfa3 1607 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1608}
1609
954c1994
GS		 1610/*
1611=for apidoc p||call_method
1612
1613Performs a callback to the specified Perl method. The blessed object must
1614be on the stack. See L<perlcall>.
1615
1616=cut
1617*/
1618
a0d0e21e 1619I32
864dbfa3 1620Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1621 /* name of the subroutine */
1622 /* See G_* flags in cop.h */
a0d0e21e 1623{
968b3946 1624 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1625}
1626
1627/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1628/*
1629=for apidoc p||call_sv
1630
1631Performs a callback to the Perl sub whose name is in the SV. See
1632L<perlcall>.
1633
1634=cut
1635*/
1636
a0d0e21e 1637I32
864dbfa3 1638Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1639 /* See G_* flags in cop.h */
a0d0e21e 1640{
924508f0 1641 dSP;
a0d0e21e 1642 LOGOP myop; /* fake syntax tree node */
968b3946 1643 UNOP method_op;
aa689395 1644 I32 oldmark;
a0d0e21e 1645 I32 retval;
a0d0e21e 1646 I32 oldscope;
54310121 1647 bool oldcatch = CATCH_GET;
6224f72b 1648 int ret;
533c011a 1649 OP* oldop = PL_op;
db36c5a1 1650 dJMPENV;
1e422769 1651
a0d0e21e
LW		 1652 if (flags & G_DISCARD) {
1653 ENTER;
1654 SAVETMPS;
1655 }
1656
aa689395 1657 Zero(&myop, 1, LOGOP);
54310121 1658 myop.op_next = Nullop;
f51d4af5 1659 if (!(flags & G_NOARGS))
aa689395 1660 myop.op_flags |= OPf_STACKED;
54310121 1661 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1662 (flags & G_ARRAY) ? OPf_WANT_LIST :
1663 OPf_WANT_SCALAR);
462e5cf6 1664 SAVEOP();
533c011a 1665 PL_op = (OP*)&myop;
aa689395 1666
3280af22
NIS		 1667 EXTEND(PL_stack_sp, 1);
1668 *++PL_stack_sp = sv;
aa689395 1669 oldmark = TOPMARK;
3280af22 1670 oldscope = PL_scopestack_ix;
a0d0e21e 1671
3280af22 1672 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1673 /* Handle first BEGIN of -d. */
3280af22 1674 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1675 /* Try harder, since this may have been a sighandler, thus
1676 * curstash may be meaningless. */
3280af22 1677 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1678 && !(flags & G_NODEBUG))
533c011a 1679 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1680
968b3946
GS		 1681 if (flags & G_METHOD) {
1682 Zero(&method_op, 1, UNOP);
1683 method_op.op_next = PL_op;
1684 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1685 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1686 PL_op = (OP*)&method_op;
968b3946
GS		 1687 }
1688
312caa8e 1689 if (!(flags & G_EVAL)) {
0cdb2077 1690 CATCH_SET(TRUE);
14dd3ad8 1691 call_body((OP*)&myop, FALSE);
312caa8e 1692 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1693 CATCH_SET(oldcatch);
312caa8e
CS		 1694 }
1695 else {
d78bda3d 1696 myop.op_other = (OP*)&myop;
3280af22 1697 PL_markstack_ptr--;
4633a7c4
LW		 1698 /* we're trying to emulate pp_entertry() here */
1699 {
c09156bb 1700 register PERL_CONTEXT *cx;
54310121 1701 I32 gimme = GIMME_V;
ac27b0f5 1702
4633a7c4
LW		 1703 ENTER;
1704 SAVETMPS;
ac27b0f5 1705
968b3946 1706 push_return(Nullop);
1d76a5c3 1707 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1708 PUSHEVAL(cx, 0, 0);
533c011a 1709 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1710
faef0170 1711 PL_in_eval = EVAL_INEVAL;
4633a7c4 1712 if (flags & G_KEEPERR)
faef0170 1713 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1714 else
38a03e6e 1715 sv_setpv(ERRSV,"");
4633a7c4 1716 }
3280af22 1717 PL_markstack_ptr++;
a0d0e21e 1718
14dd3ad8
GS		 1719#ifdef PERL_FLEXIBLE_EXCEPTIONS
1720 redo_body:
1721 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1722 (OP*)&myop, FALSE);
14dd3ad8
GS		 1723#else
1724 JMPENV_PUSH(ret);
1725#endif
6224f72b
GS		 1726 switch (ret) {
1727 case 0:
14dd3ad8
GS		 1728#ifndef PERL_FLEXIBLE_EXCEPTIONS
1729 redo_body:
1730 call_body((OP*)&myop, FALSE);
1731#endif
312caa8e
CS		 1732 retval = PL_stack_sp - (PL_stack_base + oldmark);
1733 if (!(flags & G_KEEPERR))
1734 sv_setpv(ERRSV,"");
a0d0e21e 1735 break;
6224f72b 1736 case 1:
f86702cc 1737 STATUS_ALL_FAILURE;
a0d0e21e 1738 /* FALL THROUGH */
6224f72b 1739 case 2:
a0d0e21e 1740 /* my_exit() was called */
3280af22 1741 PL_curstash = PL_defstash;
a0d0e21e 1742 FREETMPS;
14dd3ad8 1743 JMPENV_POP;
cc3604b1 1744 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1745 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1746 my_exit_jump();
a0d0e21e 1747 /* NOTREACHED */
6224f72b 1748 case 3:
3280af22 1749 if (PL_restartop) {
533c011a 1750 PL_op = PL_restartop;
3280af22 1751 PL_restartop = 0;
312caa8e 1752 goto redo_body;
a0d0e21e 1753 }
3280af22 1754 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1755 if (flags & G_ARRAY)
1756 retval = 0;
1757 else {
1758 retval = 1;
3280af22 1759 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1760 }
312caa8e 1761 break;
a0d0e21e 1762 }
a0d0e21e 1763
3280af22 1764 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1765 SV **newsp;
1766 PMOP *newpm;
1767 I32 gimme;
c09156bb 1768 register PERL_CONTEXT *cx;
a0a2876f
LW		 1769 I32 optype;
1770
1771 POPBLOCK(cx,newpm);
1772 POPEVAL(cx);
1773 pop_return();
3280af22 1774 PL_curpm = newpm;
a0a2876f 1775 LEAVE;
a0d0e21e 1776 }
14dd3ad8 1777 JMPENV_POP;
a0d0e21e 1778 }
1e422769 1779
a0d0e21e 1780 if (flags & G_DISCARD) {
3280af22 1781 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1782 retval = 0;
1783 FREETMPS;
1784 LEAVE;
1785 }
533c011a 1786 PL_op = oldop;
a0d0e21e
LW		 1787 return retval;
1788}
1789
14dd3ad8 1790#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1791STATIC void *
14dd3ad8 1792S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1793{
1794 OP *myop = va_arg(args, OP*);
1795 int is_eval = va_arg(args, int);
1796
14dd3ad8 1797 call_body(myop, is_eval);
312caa8e
CS		 1798 return NULL;
1799}
14dd3ad8 1800#endif
312caa8e
CS		 1801
1802STATIC void
14dd3ad8 1803S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1804{
312caa8e
CS		 1805 if (PL_op == myop) {
1806 if (is_eval)
f807eda9 1807 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1808 else
f807eda9 1809 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1810 }
1811 if (PL_op)
cea2e8a9 1812 CALLRUNOPS(aTHX);
312caa8e
CS		 1813}
1814
6e72f9df 1815/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1816
954c1994
GS		 1817/*
1818=for apidoc p||eval_sv
1819
1820Tells Perl to C<eval> the string in the SV.
1821
1822=cut
1823*/
1824
a0d0e21e 1825I32
864dbfa3 1826Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1827
8ac85365 1828 /* See G_* flags in cop.h */
a0d0e21e 1829{
924508f0 1830 dSP;
a0d0e21e 1831 UNOP myop; /* fake syntax tree node */
3280af22 1832 I32 oldmark = SP - PL_stack_base;
4633a7c4 1833 I32 retval;
4633a7c4 1834 I32 oldscope;
6224f72b 1835 int ret;
533c011a 1836 OP* oldop = PL_op;
db36c5a1 1837 dJMPENV;
84902520 1838
4633a7c4
LW		 1839 if (flags & G_DISCARD) {
1840 ENTER;
1841 SAVETMPS;
1842 }
1843
462e5cf6 1844 SAVEOP();
533c011a
NIS		 1845 PL_op = (OP*)&myop;
1846 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1847 EXTEND(PL_stack_sp, 1);
1848 *++PL_stack_sp = sv;
1849 oldscope = PL_scopestack_ix;
79072805 1850
4633a7c4
LW		 1851 if (!(flags & G_NOARGS))
1852 myop.op_flags = OPf_STACKED;
79072805 1853 myop.op_next = Nullop;
6e72f9df 1854 myop.op_type = OP_ENTEREVAL;
54310121 1855 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1856 (flags & G_ARRAY) ? OPf_WANT_LIST :
1857 OPf_WANT_SCALAR);
6e72f9df 1858 if (flags & G_KEEPERR)
1859 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1860
14dd3ad8 1861#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1862 redo_body:
14dd3ad8 1863 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1864 (OP*)&myop, TRUE);
14dd3ad8
GS		 1865#else
1866 JMPENV_PUSH(ret);
1867#endif
6224f72b
GS		 1868 switch (ret) {
1869 case 0:
14dd3ad8
GS		 1870#ifndef PERL_FLEXIBLE_EXCEPTIONS
1871 redo_body:
1872 call_body((OP*)&myop,TRUE);
1873#endif
312caa8e
CS		 1874 retval = PL_stack_sp - (PL_stack_base + oldmark);
1875 if (!(flags & G_KEEPERR))
1876 sv_setpv(ERRSV,"");
4633a7c4 1877 break;
6224f72b 1878 case 1:
f86702cc 1879 STATUS_ALL_FAILURE;
4633a7c4 1880 /* FALL THROUGH */
6224f72b 1881 case 2:
4633a7c4 1882 /* my_exit() was called */
3280af22 1883 PL_curstash = PL_defstash;
4633a7c4 1884 FREETMPS;
14dd3ad8 1885 JMPENV_POP;
cc3604b1 1886 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1887 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1888 my_exit_jump();
4633a7c4 1889 /* NOTREACHED */
6224f72b 1890 case 3:
3280af22 1891 if (PL_restartop) {
533c011a 1892 PL_op = PL_restartop;
3280af22 1893 PL_restartop = 0;
312caa8e 1894 goto redo_body;
4633a7c4 1895 }
3280af22 1896 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1897 if (flags & G_ARRAY)
1898 retval = 0;
1899 else {
1900 retval = 1;
3280af22 1901 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1902 }
312caa8e 1903 break;
4633a7c4
LW		 1904 }
1905
14dd3ad8 1906 JMPENV_POP;
4633a7c4 1907 if (flags & G_DISCARD) {
3280af22 1908 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1909 retval = 0;
1910 FREETMPS;
1911 LEAVE;
1912 }
533c011a 1913 PL_op = oldop;
4633a7c4
LW		 1914 return retval;
1915}
1916
954c1994
GS		 1917/*
1918=for apidoc p||eval_pv
1919
1920Tells Perl to C<eval> the given string and return an SV* result.
1921
1922=cut
1923*/
1924
137443ea 1925SV*
864dbfa3 1926Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1927{
1928 dSP;
1929 SV* sv = newSVpv(p, 0);
1930
864dbfa3 1931 eval_sv(sv, G_SCALAR);
137443ea 1932 SvREFCNT_dec(sv);
1933
1934 SPAGAIN;
1935 sv = POPs;
1936 PUTBACK;
1937
2d8e6c8d
GS		 1938 if (croak_on_error && SvTRUE(ERRSV)) {
1939 STRLEN n_a;
cea2e8a9 1940 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1941 }
137443ea 1942
1943 return sv;
1944}
1945
4633a7c4
LW		 1946/* Require a module. */
1947
954c1994
GS		 1948/*
1949=for apidoc p||require_pv
1950
1951Tells Perl to C<require> a module.
1952
1953=cut
1954*/
1955
4633a7c4 1956void
864dbfa3 1957Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1958{
d3acc0f7
JP		 1959 SV* sv;
1960 dSP;
e788e7d3 1961 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 1962 PUTBACK;
1963 sv = sv_newmortal();
4633a7c4
LW		 1964 sv_setpv(sv, "require '");
1965 sv_catpv(sv, pv);
1966 sv_catpv(sv, "'");
864dbfa3 1967 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 1968 SPAGAIN;
1969 POPSTACK;
79072805
LW		 1970}
1971
79072805 1972void
864dbfa3 1973Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 1974{
1975 register GV *gv;
1976
155aba94 1977 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
79072805
LW		 1978 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1979}
1980
76e3520e 1981STATIC void
cea2e8a9 1982S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 1983{
ab821d7f 1984 /* This message really ought to be max 23 lines.
1985 * Removed -h because the user already knows that opton. Others? */
fb73857a 1986
76e3520e 1987 static char *usage_msg[] = {
fb73857a 1988"-0[octal] specify record separator (\\0, if no argument)",
1989"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 1990"-C enable native wide character system interfaces",
1950ee41 1991"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 1992"-d[:debugger] run program under debugger",
1993"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1994"-e 'command' one line of program (several -e's allowed, omit programfile)",
1995"-F/pattern/ split() pattern for -a switch (//'s are optional)",
1996"-i[extension] edit <> files in place (makes backup if extension supplied)",
1997"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 1998"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 1999"-[mM][-]module execute `use/no module...' before executing program",
2000"-n assume 'while (<>) { ... }' loop around program",
2001"-p assume loop like -n but print line also, like sed",
2002"-P run program through C preprocessor before compilation",
2003"-s enable rudimentary parsing for switches after programfile",
2004"-S look for programfile using PATH environment variable",
2005"-T enable tainting checks",
2006"-u dump core after parsing program",
fb73857a 2007"-U allow unsafe operations",
aac3bd0d
GS		 2008"-v print version, subversion (includes VERY IMPORTANT perl info)",
2009"-V[:variable] print configuration summary (or a single Config.pm variable)",
2010"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2011"-W enable all warnings",
2012"-X disable all warnings",
fb73857a 2013"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2014"\n",
2015NULL
2016};
76e3520e 2017 char **p = usage_msg;
fb73857a 2018
b0e47665
GS		 2019 PerlIO_printf(PerlIO_stdout(),
2020 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2021 name);
fb73857a 2022 while (*p)
b0e47665 2023 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2024}
2025
79072805
LW		 2026/* This routine handles any switches that can be given during run */
2027
2028char *
864dbfa3 2029Perl_moreswitches(pTHX_ char *s)
79072805 2030{
ba210ebe 2031 STRLEN numlen;
c07a80fd 2032 U32 rschar;
79072805
LW		 2033
2034 switch (*s) {
2035 case '0':
a863c7d1 2036 {
b21ed0a9 2037 numlen = 0; /* disallow underscores */
dff6d3cd 2038 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2039 SvREFCNT_dec(PL_nrs);
c07a80fd 2040 if (rschar & ~((U8)~0))
3280af22 2041 PL_nrs = &PL_sv_undef;
c07a80fd 2042 else if (!rschar && numlen >= 2)
79cb57f6 2043 PL_nrs = newSVpvn("", 0);
c07a80fd 2044 else {
2045 char ch = rschar;
79cb57f6 2046 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2047 }
2048 return s + numlen;
a863c7d1 2049 }
46487f74
GS		 2050 case 'C':
2051 PL_widesyscalls = TRUE;
2052 s++;
2053 return s;
2304df62 2054 case 'F':
3280af22
NIS		 2055 PL_minus_F = TRUE;
2056 PL_splitstr = savepv(s + 1);
2304df62
AD		 2057 s += strlen(s);
2058 return s;
79072805 2059 case 'a':
3280af22 2060 PL_minus_a = TRUE;
79072805
LW		 2061 s++;
2062 return s;
2063 case 'c':
3280af22 2064 PL_minus_c = TRUE;
79072805
LW		 2065 s++;
2066 return s;
2067 case 'd':
bbce6d69 2068 forbid_setid("-d");
4633a7c4 2069 s++;
70c94a19
RR		 2070 /* The following permits -d:Mod to accepts arguments following an =
2071 in the fashion that -MSome::Mod does. */
2072 if (*s == ':' || *s == '=') {
2073 char *start;
2074 SV *sv;
2075 sv = newSVpv("use Devel::", 0);
2076 start = ++s;
2077 /* We now allow -d:Module=Foo,Bar */
2078 while(isALNUM(*s) || *s==':') ++s;
2079 if (*s != '=')
2080 sv_catpv(sv, start);
2081 else {
2082 sv_catpvn(sv, start, s-start);
2083 sv_catpv(sv, " split(/,/,q{");
2084 sv_catpv(sv, ++s);
2085 sv_catpv(sv, "})");
2086 }
4633a7c4 2087 s += strlen(s);
70c94a19 2088 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2089 }
ed094faf 2090 if (!PL_perldb) {
3280af22 2091 PL_perldb = PERLDB_ALL;
a0d0e21e 2092 init_debugger();
ed094faf 2093 }
79072805
LW		 2094 return s;
2095 case 'D':
0453d815 2096 {
79072805 2097#ifdef DEBUGGING
bbce6d69 2098 forbid_setid("-D");
79072805 2099 if (isALPHA(s[1])) {
607df283 2100 static char debopts[] = "psltocPmfrxuLHXDST";
79072805
LW		 2101 char *d;
2102
93a17b20 2103 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2104 PL_debug |= 1 << (d - debopts);
79072805
LW		 2105 }
2106 else {
3280af22 2107 PL_debug = atoi(s+1);
79072805
LW		 2108 for (s++; isDIGIT(*s); s++) ;
2109 }
3280af22 2110 PL_debug |= 0x80000000;
79072805 2111#else
0453d815
PM		 2112 if (ckWARN_d(WARN_DEBUGGING))
2113 Perl_warner(aTHX_ WARN_DEBUGGING,
2114 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2115 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2116#endif
2117 /*SUPPRESS 530*/
2118 return s;
0453d815 2119 }
4633a7c4 2120 case 'h':
ac27b0f5 2121 usage(PL_origargv[0]);
6ad3d225 2122 PerlProc_exit(0);
79072805 2123 case 'i':
3280af22
NIS		 2124 if (PL_inplace)
2125 Safefree(PL_inplace);
2126 PL_inplace = savepv(s+1);
79072805 2127 /*SUPPRESS 530*/
3280af22 2128 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2129 if (*s) {
fb73857a 2130 *s++ = '\0';
7b8d334a
GS		 2131 if (*s == '-') /* Additional switches on #! line. */
2132 s++;
2133 }
fb73857a 2134 return s;
2135 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2136 forbid_setid("-I");
fb73857a 2137 ++s;
2138 while (*s && isSPACE(*s))
2139 ++s;
2140 if (*s) {
774d564b 2141 char *e, *p;
0df16ed7
GS		 2142 p = s;
2143 /* ignore trailing spaces (possibly followed by other switches) */
2144 do {
2145 for (e = p; *e && !isSPACE(*e); e++) ;
2146 p = e;
2147 while (isSPACE(*p))
2148 p++;
2149 } while (*p && *p != '-');
2150 e = savepvn(s, e-s);
9c8a64f0 2151 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2152 Safefree(e);
2153 s = p;
2154 if (*s == '-')
2155 s++;
79072805
LW		 2156 }
2157 else
a67e862a 2158 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2159 return s;
79072805 2160 case 'l':
3280af22 2161 PL_minus_l = TRUE;
79072805 2162 s++;
7889fe52
NIS		 2163 if (PL_ors_sv) {
2164 SvREFCNT_dec(PL_ors_sv);
2165 PL_ors_sv = Nullsv;
2166 }
79072805 2167 if (isDIGIT(*s)) {
7889fe52 2168 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2169 numlen = 0; /* disallow underscores */
7889fe52 2170 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2171 s += numlen;
2172 }
2173 else {
3280af22 2174 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2175 PL_ors_sv = newSVpvn("\n\n",2);
2176 }
2177 else {
2178 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2179 }
79072805
LW		 2180 }
2181 return s;
1a30305b 2182 case 'M':
bbce6d69 2183 forbid_setid("-M"); /* XXX ? */
1a30305b 2184 /* FALL THROUGH */
2185 case 'm':
bbce6d69 2186 forbid_setid("-m"); /* XXX ? */
1a30305b 2187 if (*++s) {
a5f75d66 2188 char *start;
11343788 2189 SV *sv;
a5f75d66
AD		 2190 char *use = "use ";
2191 /* -M-foo == 'no foo' */
2192 if (*s == '-') { use = "no "; ++s; }
11343788 2193 sv = newSVpv(use,0);
a5f75d66 2194 start = s;
1a30305b 2195 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2196 while(isALNUM(*s) || *s==':') ++s;
2197 if (*s != '=') {
11343788 2198 sv_catpv(sv, start);
c07a80fd 2199 if (*(start-1) == 'm') {
2200 if (*s != '\0')
cea2e8a9 2201 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2202 sv_catpv( sv, " ()");
c07a80fd 2203 }
2204 } else {
6df41af2 2205 if (s == start)
be98fb35
GS		 2206 Perl_croak(aTHX_ "Module name required with -%c option",
2207 s[-1]);
11343788
MB		 2208 sv_catpvn(sv, start, s-start);
2209 sv_catpv(sv, " split(/,/,q{");
2210 sv_catpv(sv, ++s);
2211 sv_catpv(sv, "})");
c07a80fd 2212 }
1a30305b 2213 s += strlen(s);
5c831c24 2214 if (!PL_preambleav)
3280af22
NIS		 2215 PL_preambleav = newAV();
2216 av_push(PL_preambleav, sv);
1a30305b 2217 }
2218 else
cea2e8a9 2219 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2220 return s;
79072805 2221 case 'n':
3280af22 2222 PL_minus_n = TRUE;
79072805
LW		 2223 s++;
2224 return s;
2225 case 'p':
3280af22 2226 PL_minus_p = TRUE;
79072805
LW		 2227 s++;
2228 return s;
2229 case 's':
bbce6d69 2230 forbid_setid("-s");
3280af22 2231 PL_doswitches = TRUE;
79072805
LW		 2232 s++;
2233 return s;
463ee0b2 2234 case 'T':
3280af22 2235 if (!PL_tainting)
cea2e8a9 2236 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2237 s++;
2238 return s;
79072805 2239 case 'u':
bf4acbe4
GS		 2240#ifdef MACOS_TRADITIONAL
2241 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2242#endif
3280af22 2243 PL_do_undump = TRUE;
79072805
LW		 2244 s++;
2245 return s;
2246 case 'U':
3280af22 2247 PL_unsafe = TRUE;
79072805
LW		 2248 s++;
2249 return s;
2250 case 'v':
b0e47665 2251 PerlIO_printf(PerlIO_stdout(),
d2560b70 2252 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2253 PL_patchlevel, ARCHNAME));
fb73857a 2254#if defined(LOCAL_PATCH_COUNT)
2255 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2256 PerlIO_printf(PerlIO_stdout(),
2257 "\n(with %d registered patch%s, "
2258 "see perl -V for more detail)",
2259 (int)LOCAL_PATCH_COUNT,
2260 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2261#endif
1a30305b 2262
b0e47665 2263 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2264 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2265#ifdef MACOS_TRADITIONAL
2266 PerlIO_printf(PerlIO_stdout(),
2267 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2268#endif
79072805 2269#ifdef MSDOS
b0e47665
GS		 2270 PerlIO_printf(PerlIO_stdout(),
2271 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2272#endif
2273#ifdef DJGPP
b0e47665
GS		 2274 PerlIO_printf(PerlIO_stdout(),
2275 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2276 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2277#endif
79072805 2278#ifdef OS2
b0e47665
GS		 2279 PerlIO_printf(PerlIO_stdout(),
2280 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2281 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2282#endif
79072805 2283#ifdef atarist
b0e47665
GS		 2284 PerlIO_printf(PerlIO_stdout(),
2285 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2286#endif
a3f9223b 2287#ifdef __BEOS__
b0e47665
GS		 2288 PerlIO_printf(PerlIO_stdout(),
2289 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2290#endif
1d84e8df 2291#ifdef MPE
b0e47665
GS		 2292 PerlIO_printf(PerlIO_stdout(),
2293 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 2294#endif
9d116dd7 2295#ifdef OEMVS
b0e47665
GS		 2296 PerlIO_printf(PerlIO_stdout(),
2297 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2298#endif
495c5fdc 2299#ifdef __VOS__
b0e47665
GS		 2300 PerlIO_printf(PerlIO_stdout(),
2301 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2302#endif
092bebab 2303#ifdef __OPEN_VM
b0e47665
GS		 2304 PerlIO_printf(PerlIO_stdout(),
2305 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2306#endif
a1a0e61e 2307#ifdef POSIX_BC
b0e47665
GS		 2308 PerlIO_printf(PerlIO_stdout(),
2309 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2310#endif
61ae2fbf 2311#ifdef __MINT__
b0e47665
GS		 2312 PerlIO_printf(PerlIO_stdout(),
2313 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2314#endif
f83d2536 2315#ifdef EPOC
b0e47665
GS		 2316 PerlIO_printf(PerlIO_stdout(),
2317 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2318#endif
baed7233
DL		 2319#ifdef BINARY_BUILD_NOTICE
2320 BINARY_BUILD_NOTICE;
2321#endif
b0e47665
GS		 2322 PerlIO_printf(PerlIO_stdout(),
2323 "\n\
79072805 2324Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2325GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2326Complete documentation for Perl, including FAQ lists, should be found on\n\
2327this system using `man perl' or `perldoc perl'. If you have access to the\n\
2328Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2329 PerlProc_exit(0);
79072805 2330 case 'w':
599cee73 2331 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2332 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2333 s++;
2334 return s;
2335 case 'W':
ac27b0f5 2336 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2337 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2338 s++;
2339 return s;
2340 case 'X':
ac27b0f5 2341 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2342 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2343 s++;
2344 return s;
a0d0e21e 2345 case '*':
79072805
LW		 2346 case ' ':
2347 if (s[1] == '-') /* Additional switches on #! line. */
2348 return s+2;
2349 break;
a0d0e21e 2350 case '-':
79072805 2351 case 0:
51882d45 2352#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2353 case '\r':
2354#endif
79072805
LW		 2355 case '\n':
2356 case '\t':
2357 break;
aa689395 2358#ifdef ALTERNATE_SHEBANG
2359 case 'S': /* OS/2 needs -S on "extproc" line. */
2360 break;
2361#endif
a0d0e21e 2362 case 'P':
3280af22 2363 if (PL_preprocess)
a0d0e21e
LW		 2364 return s+1;
2365 /* FALL THROUGH */
79072805 2366 default:
cea2e8a9 2367 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2368 }
2369 return Nullch;
2370}
2371
2372/* compliments of Tom Christiansen */
2373
2374/* unexec() can be found in the Gnu emacs distribution */
ee580363 2375/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2376
2377void
864dbfa3 2378Perl_my_unexec(pTHX)
79072805
LW		 2379{
2380#ifdef UNEXEC
46fc3d4c 2381 SV* prog;
2382 SV* file;
ee580363 2383 int status = 1;
79072805
LW		 2384 extern int etext;
2385
ee580363 2386 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2387 sv_catpv(prog, "/perl");
6b88bc9c 2388 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2389 sv_catpv(file, ".perldump");
79072805 2390
ee580363
GS		 2391 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2392 /* unexec prints msg to stderr in case of failure */
6ad3d225 2393 PerlProc_exit(status);
79072805 2394#else
a5f75d66
AD		 2395# ifdef VMS
2396# include <lib$routines.h>
2397 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2398# else
79072805 2399 ABORT(); /* for use with undump */
aa689395 2400# endif
a5f75d66 2401#endif
79072805
LW		 2402}
2403
cb68f92d
GS		 2404/* initialize curinterp */
2405STATIC void
cea2e8a9 2406S_init_interp(pTHX)
cb68f92d
GS		 2407{
2408
066ef5b5 2409#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2410#define I_REINIT \
6b88bc9c
GS		 2411 STMT_START { \
2412 PL_chopset = " \n-"; \
2413 PL_copline = NOLINE; \
2414 PL_curcop = &PL_compiling;\
2415 PL_curcopdb = NULL; \
2416 PL_dbargs = 0; \
3967c732 2417 PL_dumpindent = 4; \
6b88bc9c
GS		 2418 PL_laststatval = -1; \
2419 PL_laststype = OP_STAT; \
2420 PL_maxscream = -1; \
2421 PL_maxsysfd = MAXSYSFD; \
2422 PL_statname = Nullsv; \
2423 PL_tmps_floor = -1; \
2424 PL_tmps_ix = -1; \
2425 PL_op_mask = NULL; \
6b88bc9c
GS		 2426 PL_laststatval = -1; \
2427 PL_laststype = OP_STAT; \
2428 PL_mess_sv = Nullsv; \
2429 PL_splitstr = " "; \
2430 PL_generation = 100; \
2431 PL_exitlist = NULL; \
2432 PL_exitlistlen = 0; \
2433 PL_regindent = 0; \
2434 PL_in_clean_objs = FALSE; \
2435 PL_in_clean_all = FALSE; \
2436 PL_profiledata = NULL; \
2437 PL_rsfp = Nullfp; \
2438 PL_rsfp_filters = Nullav; \
24d3c518 2439 PL_dirty = FALSE; \
cb68f92d 2440 } STMT_END
9666903d 2441 I_REINIT;
066ef5b5
GS		 2442#else
2443# ifdef MULTIPLICITY
2444# define PERLVAR(var,type)
51371543 2445# define PERLVARA(var,n,type)
cea2e8a9 2446# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2447# if defined(USE_THREADS)
2448# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2449# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2450# else /* !USE_THREADS */
2451# define PERLVARI(var,type,init) aTHX->var = init;
2452# define PERLVARIC(var,type,init) aTHX->var = init;
2453# endif /* USE_THREADS */
cea2e8a9 2454# else
c5be433b
GS		 2455# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2456# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2457# endif
066ef5b5
GS		 2458# include "intrpvar.h"
2459# ifndef USE_THREADS
2460# include "thrdvar.h"
2461# endif
2462# undef PERLVAR
51371543 2463# undef PERLVARA
066ef5b5
GS		 2464# undef PERLVARI
2465# undef PERLVARIC
3967c732 2466# else
066ef5b5 2467# define PERLVAR(var,type)
51371543 2468# define PERLVARA(var,n,type)
533c011a
NIS		 2469# define PERLVARI(var,type,init) PL_##var = init;
2470# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2471# include "intrpvar.h"
2472# ifndef USE_THREADS
2473# include "thrdvar.h"
2474# endif
2475# undef PERLVAR
51371543 2476# undef PERLVARA
066ef5b5
GS		 2477# undef PERLVARI
2478# undef PERLVARIC
2479# endif
cb68f92d
GS		 2480#endif
2481
cb68f92d
GS		 2482}
2483
76e3520e 2484STATIC void
cea2e8a9 2485S_init_main_stash(pTHX)
79072805 2486{
463ee0b2 2487 GV *gv;
6e72f9df 2488
2489 /* Note that strtab is a rather special HV. Assumptions are made
2490 about not iterating on it, and not adding tie magic to it.
2491 It is properly deallocated in perl_destruct() */
3280af22 2492 PL_strtab = newHV();
5f08fbcd
GS		 2493#ifdef USE_THREADS
2494 MUTEX_INIT(&PL_strtab_mutex);
2495#endif
3280af22
NIS		 2496 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2497 hv_ksplit(PL_strtab, 512);
ac27b0f5 2498
3280af22 2499 PL_curstash = PL_defstash = newHV();
79cb57f6 2500 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2501 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2502 SvREFCNT_dec(GvHV(gv));
3280af22 2503 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2504 SvREADONLY_on(gv);
3280af22
NIS		 2505 HvNAME(PL_defstash) = savepv("main");
2506 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2507 GvMULTI_on(PL_incgv);
2508 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2509 GvMULTI_on(PL_hintgv);
2510 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2511 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2512 GvMULTI_on(PL_errgv);
2513 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2514 GvMULTI_on(PL_replgv);
cea2e8a9 2515 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2516 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2517 sv_setpvn(ERRSV, "", 0);
3280af22 2518 PL_curstash = PL_defstash;
11faa288 2519 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2520 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2521 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2522 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2523 /* We must init $/ before switches are processed. */
864dbfa3 2524 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2525}
2526
76e3520e 2527STATIC void
cea2e8a9 2528S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2529{
6c4ab083 2530 *fdscript = -1;
79072805 2531
3280af22
NIS		 2532 if (PL_e_script) {
2533 PL_origfilename = savepv("-e");
96436eeb 2534 }
6c4ab083
GS		 2535 else {
2536 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2537 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2538
2539 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2540 char *s = scriptname + 8;
2541 *fdscript = atoi(s);
2542 while (isDIGIT(*s))
2543 s++;
2544 if (*s) {
2545 scriptname = savepv(s + 1);
3280af22
NIS		 2546 Safefree(PL_origfilename);
2547 PL_origfilename = scriptname;
6c4ab083
GS		 2548 }
2549 }
2550 }
2551
f4dd75d9
GS		 2552#ifdef USE_ITHREADS
2553 Safefree(CopFILE(PL_curcop));
2554#else
2555 SvREFCNT_dec(CopFILEGV(PL_curcop));
2556#endif
57843af0 2557 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2558 if (strEQ(PL_origfilename,"-"))
79072805 2559 scriptname = "";
01f988be 2560 if (*fdscript >= 0) {
3280af22 2561 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2562#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2563 if (PL_rsfp)
2564 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2565#endif
2566 }
3280af22 2567 else if (PL_preprocess) {
46fc3d4c 2568 char *cpp_cfg = CPPSTDIN;
79cb57f6 2569 SV *cpp = newSVpvn("",0);
46fc3d4c 2570 SV *cmd = NEWSV(0,0);
2571
2572 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2573 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2574 sv_catpv(cpp, cpp_cfg);
79072805 2575
0df16ed7 2576 sv_catpvn(sv, "-I", 2);
fed7345c 2577 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2578
52853b95 2579#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2580 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2581sed %s -e \"/^[^#]/b\" \
2582 -e \"/^#[ ]*include[ ]/b\" \
2583 -e \"/^#[ ]*define[ ]/b\" \
2584 -e \"/^#[ ]*if[ ]/b\" \
2585 -e \"/^#[ ]*ifdef[ ]/b\" \
2586 -e \"/^#[ ]*ifndef[ ]/b\" \
2587 -e \"/^#[ ]*else/b\" \
2588 -e \"/^#[ ]*elif[ ]/b\" \
2589 -e \"/^#[ ]*undef[ ]/b\" \
2590 -e \"/^#[ ]*endif/b\" \
2591 -e \"s/^#.*//\" \
894356b3 2592 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2593 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2594#else
092bebab 2595# ifdef __OPEN_VM
cea2e8a9 2596 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2597%s %s -e '/^[^#]/b' \
2598 -e '/^#[ ]*include[ ]/b' \
2599 -e '/^#[ ]*define[ ]/b' \
2600 -e '/^#[ ]*if[ ]/b' \
2601 -e '/^#[ ]*ifdef[ ]/b' \
2602 -e '/^#[ ]*ifndef[ ]/b' \
2603 -e '/^#[ ]*else/b' \
2604 -e '/^#[ ]*elif[ ]/b' \
2605 -e '/^#[ ]*undef[ ]/b' \
2606 -e '/^#[ ]*endif/b' \
2607 -e 's/^[ ]*#.*//' \
894356b3 2608 %s | %"SVf" %"SVf" %s",
092bebab 2609# else
cea2e8a9 2610 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2611%s %s -e '/^[^#]/b' \
2612 -e '/^#[ ]*include[ ]/b' \
2613 -e '/^#[ ]*define[ ]/b' \
2614 -e '/^#[ ]*if[ ]/b' \
2615 -e '/^#[ ]*ifdef[ ]/b' \
2616 -e '/^#[ ]*ifndef[ ]/b' \
2617 -e '/^#[ ]*else/b' \
2618 -e '/^#[ ]*elif[ ]/b' \
2619 -e '/^#[ ]*undef[ ]/b' \
2620 -e '/^#[ ]*endif/b' \
2621 -e 's/^[ ]*#.*//' \
894356b3 2622 %s | %"SVf" -C %"SVf" %s",
092bebab 2623# endif
79072805
LW		 2624#ifdef LOC_SED
2625 LOC_SED,
2626#else
2627 "sed",
2628#endif
3280af22 2629 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2630#endif
46fc3d4c 2631 scriptname, cpp, sv, CPPMINUS);
3280af22 2632 PL_doextract = FALSE;
79072805 2633#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2634 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2635#ifdef HAS_SETEUID
b28d0864 2636 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2637#else
2638#ifdef HAS_SETREUID
b28d0864 2639 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2640#else
2641#ifdef HAS_SETRESUID
b28d0864 2642 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2643#else
b28d0864 2644 PerlProc_setuid(PL_uid);
79072805
LW		 2645#endif
2646#endif
85e6fe83 2647#endif
b28d0864 2648 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2649 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2650 }
2651#endif /* IAMSUID */
3280af22 2652 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2653 SvREFCNT_dec(cmd);
2654 SvREFCNT_dec(cpp);
79072805
LW		 2655 }
2656 else if (!*scriptname) {
bbce6d69 2657 forbid_setid("program input from stdin");
3280af22 2658 PL_rsfp = PerlIO_stdin();
79072805 2659 }
96436eeb 2660 else {
3280af22 2661 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2662#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2663 if (PL_rsfp)
2664 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2665#endif
2666 }
3280af22 2667 if (!PL_rsfp) {
13281fa4 2668#ifdef DOSUID
a687059c 2669#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2670 if (PL_euid &&
cc49e20b 2671 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2672 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2673 {
46fc3d4c 2674 /* try again */
a7cb1f99 2675 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2676 (int)PERL_REVISION, (int)PERL_VERSION,
2677 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2678 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2679 }
2680#endif
2681#endif
cea2e8a9 2682 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2683 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2684 }
79072805 2685}
8d063cd8 2686
7b89560d
JH		 2687/* Mention
2688 * I_SYSSTATVFS HAS_FSTATVFS
2689 * I_SYSMOUNT
c890dc6c 2690 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2691 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2692 * here so that metaconfig picks them up. */
2693
104d25b7 2694#ifdef IAMSUID
864dbfa3 2695STATIC int
e688b231 2696S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2697{
0545a864
JH		 2698 int check_okay = 0; /* able to do all the required sys/libcalls */
2699 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2700/*
ad27e871 2701 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2702 * fstatvfs() is UNIX98.
0545a864 2703 * fstatfs() is 4.3 BSD.
ad27e871 2704 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2705 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2706 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2707 */
2708
6439433f
JH		 2709#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2710
2711# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2712 defined(HAS_FSTATVFS)
2713# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2714 struct statvfs stfs;
6439433f 2715
104d25b7
JH		 2716 check_okay = fstatvfs(fd, &stfs) == 0;
2717 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2718# endif /* fstatvfs */
ac27b0f5 2719
6439433f
JH		 2720# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2721 defined(PERL_MOUNT_NOSUID) && \
2722 defined(HAS_FSTATFS) && \
2723 defined(HAS_STRUCT_STATFS) && \
2724 defined(HAS_STRUCT_STATFS_F_FLAGS)
2725# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2726 struct statfs stfs;
6439433f 2727
104d25b7 2728 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2729 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2730# endif /* fstatfs */
2731
2732# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2733 defined(PERL_MOUNT_NOSUID) && \
2734 defined(HAS_FSTAT) && \
2735 defined(HAS_USTAT) && \
2736 defined(HAS_GETMNT) && \
2737 defined(HAS_STRUCT_FS_DATA) && \
2738 defined(NOSTAT_ONE)
2739# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2740 struct stat fdst;
6439433f 2741
0545a864 2742 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2743 struct ustat us;
2744 if (ustat(fdst.st_dev, &us) == 0) {
2745 struct fs_data fsd;
2746 /* NOSTAT_ONE here because we're not examining fields which
2747 * vary between that case and STAT_ONE. */
ad27e871 2748 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2749 size_t cmplen = sizeof(us.f_fname);
2750 if (sizeof(fsd.fd_req.path) < cmplen)
2751 cmplen = sizeof(fsd.fd_req.path);
2752 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2753 fdst.st_dev == fsd.fd_req.dev) {
2754 check_okay = 1;
2755 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2756 }
2757 }
2758 }
2759 }
0545a864 2760 }
6439433f
JH		 2761# endif /* fstat+ustat+getmnt */
2762
2763# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2764 defined(HAS_GETMNTENT) && \
2765 defined(HAS_HASMNTOPT) && \
2766 defined(MNTOPT_NOSUID)
2767# define FD_ON_NOSUID_CHECK_OKAY
2768 FILE *mtab = fopen("/etc/mtab", "r");
2769 struct mntent *entry;
2770 struct stat stb, fsb;
104d25b7
JH		 2771
2772 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2773 while (entry = getmntent(mtab)) {
2774 if (stat(entry->mnt_dir, &fsb) == 0
2775 && fsb.st_dev == stb.st_dev)
2776 {
2777 /* found the filesystem */
2778 check_okay = 1;
2779 if (hasmntopt(entry, MNTOPT_NOSUID))
2780 on_nosuid = 1;
2781 break;
2782 } /* A single fs may well fail its stat(). */
2783 }
104d25b7
JH		 2784 }
2785 if (mtab)
6439433f
JH		 2786 fclose(mtab);
2787# endif /* getmntent+hasmntopt */
0545a864 2788
ac27b0f5 2789 if (!check_okay)
0545a864 2790 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2791 return on_nosuid;
2792}
2793#endif /* IAMSUID */
2794
76e3520e 2795STATIC void
cea2e8a9 2796S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2797{
155aba94 2798#ifdef IAMSUID
96436eeb 2799 int which;
155aba94 2800#endif
96436eeb 2801
13281fa4
LW		 2802 /* do we need to emulate setuid on scripts? */
2803
2804 /* This code is for those BSD systems that have setuid #! scripts disabled
2805 * in the kernel because of a security problem. Merely defining DOSUID
2806 * in perl will not fix that problem, but if you have disabled setuid
2807 * scripts in the kernel, this will attempt to emulate setuid and setgid
2808 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2809 * root version must be called suidperl or sperlN.NNN. If regular perl
2810 * discovers that it has opened a setuid script, it calls suidperl with
2811 * the same argv that it had. If suidperl finds that the script it has
2812 * just opened is NOT setuid root, it sets the effective uid back to the
2813 * uid. We don't just make perl setuid root because that loses the
2814 * effective uid we had before invoking perl, if it was different from the
2815 * uid.
13281fa4
LW		 2816 *
2817 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2818 * be defined in suidperl only. suidperl must be setuid root. The
2819 * Configure script will set this up for you if you want it.
2820 */
a687059c 2821
13281fa4 2822#ifdef DOSUID
6e72f9df 2823 char *s, *s2;
a0d0e21e 2824
b28d0864 2825 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2826 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2827 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2828 I32 len;
2d8e6c8d 2829 STRLEN n_a;
13281fa4 2830
a687059c 2831#ifdef IAMSUID
fe14fcc3 2832#ifndef HAS_SETREUID
a687059c
LW		 2833 /* On this access check to make sure the directories are readable,
2834 * there is actually a small window that the user could use to make
2835 * filename point to an accessible directory. So there is a faint
2836 * chance that someone could execute a setuid script down in a
2837 * non-accessible directory. I don't know what to do about that.
2838 * But I don't think it's too important. The manual lies when
2839 * it says access() is useful in setuid programs.
2840 */
cc49e20b 2841 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2842 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2843#else
2844 /* If we can swap euid and uid, then we can determine access rights
2845 * with a simple stat of the file, and then compare device and
2846 * inode to make sure we did stat() on the same file we opened.
2847 * Then we just have to make sure he or she can execute it.
2848 */
2849 {
2850 struct stat tmpstatbuf;
2851
85e6fe83
LW		 2852 if (
2853#ifdef HAS_SETREUID
b28d0864 2854 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2855#else
2856# if HAS_SETRESUID
b28d0864 2857 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2858# endif
85e6fe83 2859#endif
b28d0864 2860 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2861 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2862 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2863 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2864#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2865 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2866 Perl_croak(aTHX_ "Permission denied");
104d25b7 2867#endif
b28d0864
NIS		 2868 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2869 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2870 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2871 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2872 }
85e6fe83
LW		 2873 if (
2874#ifdef HAS_SETREUID
b28d0864 2875 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2876#else
2877# if defined(HAS_SETRESUID)
b28d0864 2878 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2879# endif
85e6fe83 2880#endif
b28d0864 2881 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2882 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2883 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2884 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2885 }
fe14fcc3 2886#endif /* HAS_SETREUID */
a687059c
LW		 2887#endif /* IAMSUID */
2888
b28d0864 2889 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2890 Perl_croak(aTHX_ "Permission denied");
b28d0864 2891 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2892 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2893 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2894 CopLINE_inc(PL_curcop);
6b88bc9c 2895 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2896 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2897 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2898 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2899 if (*s == ' ') s++;
45d8adaa 2900 while (!isSPACE(*s)) s++;
2d8e6c8d 2901 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2902 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2903 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2904 Perl_croak(aTHX_ "Not a perl script");
a687059c 2905 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2906 /*
2907 * #! arg must be what we saw above. They can invoke it by
2908 * mentioning suidperl explicitly, but they may not add any strange
2909 * arguments beyond what #! says if they do invoke suidperl that way.
2910 */
2911 len = strlen(validarg);
2912 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2913 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2914 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2915
2916#ifndef IAMSUID
b28d0864
NIS		 2917 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2918 PL_euid == PL_statbuf.st_uid)
2919 if (!PL_do_undump)
cea2e8a9 2920 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2921FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2922#endif /* IAMSUID */
13281fa4 2923
b28d0864
NIS		 2924 if (PL_euid) { /* oops, we're not the setuid root perl */
2925 (void)PerlIO_close(PL_rsfp);
13281fa4 2926#ifndef IAMSUID
46fc3d4c 2927 /* try again */
a7cb1f99 2928 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2929 (int)PERL_REVISION, (int)PERL_VERSION,
2930 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 2931#endif
cea2e8a9 2932 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2933 }
2934
b28d0864 2935 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2936#ifdef HAS_SETEGID
b28d0864 2937 (void)setegid(PL_statbuf.st_gid);
a687059c 2938#else
fe14fcc3 2939#ifdef HAS_SETREGID
b28d0864 2940 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 2941#else
2942#ifdef HAS_SETRESGID
b28d0864 2943 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2944#else
b28d0864 2945 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 2946#endif
2947#endif
85e6fe83 2948#endif
b28d0864 2949 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2950 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2951 }
b28d0864
NIS		 2952 if (PL_statbuf.st_mode & S_ISUID) {
2953 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2954#ifdef HAS_SETEUID
b28d0864 2955 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2956#else
fe14fcc3 2957#ifdef HAS_SETREUID
b28d0864 2958 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 2959#else
2960#ifdef HAS_SETRESUID
b28d0864 2961 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2962#else
b28d0864 2963 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 2964#endif
2965#endif
85e6fe83 2966#endif
b28d0864 2967 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2968 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2969 }
b28d0864 2970 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2971#ifdef HAS_SETEUID
b28d0864 2972 (void)seteuid((Uid_t)PL_uid);
a687059c 2973#else
fe14fcc3 2974#ifdef HAS_SETREUID
b28d0864 2975 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2976#else
85e6fe83 2977#ifdef HAS_SETRESUID
b28d0864 2978 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2979#else
b28d0864 2980 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2981#endif
a687059c
LW		 2982#endif
2983#endif
b28d0864 2984 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2985 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2986 }
748a9306 2987 init_ids();
b28d0864 2988 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2989 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 2990 }
2991#ifdef IAMSUID
6b88bc9c 2992 else if (PL_preprocess)
cea2e8a9 2993 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2994 else if (fdscript >= 0)
cea2e8a9 2995 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 2996 else
cea2e8a9 2997 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 2998
2999 /* We absolutely must clear out any saved ids here, so we */
3000 /* exec the real perl, substituting fd script for scriptname. */
3001 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3002 PerlIO_rewind(PL_rsfp);
3003 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3004 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3005 if (!PL_origargv[which])
cea2e8a9
GS		 3006 Perl_croak(aTHX_ "Permission denied");
3007 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3008 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3009#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3010 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3011#endif
a7cb1f99 3012 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3013 (int)PERL_REVISION, (int)PERL_VERSION,
3014 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3015 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3016#endif /* IAMSUID */
a687059c 3017#else /* !DOSUID */
3280af22 3018 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3019#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3020 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3021 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3022 ||
b28d0864 3023 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3024 )
b28d0864 3025 if (!PL_do_undump)
cea2e8a9 3026 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3027FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3028#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3029 /* not set-id, must be wrapped */
a687059c 3030 }
13281fa4 3031#endif /* DOSUID */
79072805 3032}
13281fa4 3033
76e3520e 3034STATIC void
cea2e8a9 3035S_find_beginning(pTHX)
79072805 3036{
6e72f9df 3037 register char *s, *s2;
33b78306
LW		 3038
3039 /* skip forward in input to the real script? */
3040
bbce6d69 3041 forbid_setid("-x");
bf4acbe4
GS		 3042#ifdef MACOS_TRADITIONAL
3043 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
ac27b0f5 3044
bf4acbe4
GS		 3045 while (PL_doextract || gMacPerl_AlwaysExtract) {
3046 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3047 if (!gMacPerl_AlwaysExtract)
3048 Perl_croak(aTHX_ "No Perl script found in input\n");
3049
3050 if (PL_doextract) /* require explicit override ? */
3051 if (!OverrideExtract(PL_origfilename))
3052 Perl_croak(aTHX_ "User aborted script\n");
3053 else
3054 PL_doextract = FALSE;
3055
3056 /* Pater peccavi, file does not have #! */
3057 PerlIO_rewind(PL_rsfp);
ac27b0f5 3058
bf4acbe4
GS		 3059 break;
3060 }
3061#else
3280af22
NIS		 3062 while (PL_doextract) {
3063 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3064 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3065#endif
6e72f9df 3066 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 3067 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3068 PL_doextract = FALSE;
6e72f9df 3069 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3070 s2 = s;
3071 while (*s == ' ' || *s == '\t') s++;
3072 if (*s++ == '-') {
3073 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3074 if (strnEQ(s2-4,"perl",4))
3075 /*SUPPRESS 530*/
155aba94
GS		 3076 while ((s = moreswitches(s)))
3077 ;
33b78306 3078 }
83025b21
LW		 3079 }
3080 }
3081}
3082
afe37c7d 3083
76e3520e 3084STATIC void
cea2e8a9 3085S_init_ids(pTHX)
352d5a3a 3086{
d8eceb89
JH		 3087 PL_uid = PerlProc_getuid();
3088 PL_euid = PerlProc_geteuid();
3089 PL_gid = PerlProc_getgid();
3090 PL_egid = PerlProc_getegid();
748a9306 3091#ifdef VMS
b28d0864
NIS		 3092 PL_uid |= PL_gid << 16;
3093 PL_euid |= PL_egid << 16;
748a9306 3094#endif
3280af22 3095 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3096}
79072805 3097
76e3520e 3098STATIC void
cea2e8a9 3099S_forbid_setid(pTHX_ char *s)
bbce6d69 3100{
3280af22 3101 if (PL_euid != PL_uid)
cea2e8a9 3102 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3103 if (PL_egid != PL_gid)
cea2e8a9 3104 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3105}
3106
1ee4443e
IZ		 3107void
3108Perl_init_debugger(pTHX)
748a9306 3109{
1ee4443e
IZ		 3110 HV *ostash = PL_curstash;
3111
3280af22
NIS		 3112 PL_curstash = PL_debstash;
3113 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3114 AvREAL_off(PL_dbargs);
3115 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3116 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3117 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3118 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3119 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3120 sv_setiv(PL_DBsingle, 0);
3280af22 3121 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3122 sv_setiv(PL_DBtrace, 0);
3280af22 3123 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3124 sv_setiv(PL_DBsignal, 0);
1ee4443e 3125 PL_curstash = ostash;
352d5a3a
LW		 3126}
3127
2ce36478
SM		 3128#ifndef STRESS_REALLOC
3129#define REASONABLE(size) (size)
3130#else
3131#define REASONABLE(size) (1) /* unreasonable */
3132#endif
3133
11343788 3134void
cea2e8a9 3135Perl_init_stacks(pTHX)
79072805 3136{
e336de0d 3137 /* start with 128-item stack and 8K cxstack */
3280af22 3138 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3139 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3140 PL_curstackinfo->si_type = PERLSI_MAIN;
3141 PL_curstack = PL_curstackinfo->si_stack;
3142 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3143
3280af22
NIS		 3144 PL_stack_base = AvARRAY(PL_curstack);
3145 PL_stack_sp = PL_stack_base;
3146 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3147
3280af22
NIS		 3148 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3149 PL_tmps_floor = -1;
3150 PL_tmps_ix = -1;
3151 PL_tmps_max = REASONABLE(128);
8990e307 3152
3280af22
NIS		 3153 New(54,PL_markstack,REASONABLE(32),I32);
3154 PL_markstack_ptr = PL_markstack;
3155 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3156
ce2f7c3b 3157 SET_MARK_OFFSET;
e336de0d 3158
3280af22
NIS		 3159 New(54,PL_scopestack,REASONABLE(32),I32);
3160 PL_scopestack_ix = 0;
3161 PL_scopestack_max = REASONABLE(32);
79072805 3162
3280af22
NIS		 3163 New(54,PL_savestack,REASONABLE(128),ANY);
3164 PL_savestack_ix = 0;
3165 PL_savestack_max = REASONABLE(128);
79072805 3166
3280af22
NIS		 3167 New(54,PL_retstack,REASONABLE(16),OP*);
3168 PL_retstack_ix = 0;
3169 PL_retstack_max = REASONABLE(16);
378cc40b 3170}
33b78306 3171
2ce36478
SM		 3172#undef REASONABLE
3173
76e3520e 3174STATIC void
cea2e8a9 3175S_nuke_stacks(pTHX)
6e72f9df 3176{
3280af22
NIS		 3177 while (PL_curstackinfo->si_next)
3178 PL_curstackinfo = PL_curstackinfo->si_next;
3179 while (PL_curstackinfo) {
3180 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3181 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3182 Safefree(PL_curstackinfo->si_cxstack);
3183 Safefree(PL_curstackinfo);
3184 PL_curstackinfo = p;
e336de0d 3185 }
3280af22
NIS		 3186 Safefree(PL_tmps_stack);
3187 Safefree(PL_markstack);
3188 Safefree(PL_scopestack);
3189 Safefree(PL_savestack);
3190 Safefree(PL_retstack);
378cc40b 3191}
33b78306 3192
76e3520e 3193#ifndef PERL_OBJECT
760ac839 3194static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3195#endif
7aa04957 3196
76e3520e 3197STATIC void
cea2e8a9 3198S_init_lexer(pTHX)
8990e307 3199{
76e3520e
GS		 3200#ifdef PERL_OBJECT
3201 PerlIO *tmpfp;
3202#endif
3280af22
NIS		 3203 tmpfp = PL_rsfp;
3204 PL_rsfp = Nullfp;
3205 lex_start(PL_linestr);
3206 PL_rsfp = tmpfp;
79cb57f6 3207 PL_subname = newSVpvn("main",4);
8990e307
LW		 3208}
3209
76e3520e 3210STATIC void
cea2e8a9 3211S_init_predump_symbols(pTHX)
45d8adaa 3212{
93a17b20 3213 GV *tmpgv;
af8c498a 3214 IO *io;
79072805 3215
864dbfa3 3216 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3217 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3218 GvMULTI_on(PL_stdingv);
af8c498a
GS		 3219 io = GvIOp(PL_stdingv);
3220 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3221 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3222 GvMULTI_on(tmpgv);
af8c498a 3223 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3224
85e6fe83 3225 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3226 GvMULTI_on(tmpgv);
af8c498a
GS		 3227 io = GvIOp(tmpgv);
3228 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3229 setdefout(tmpgv);
adbc6bb1 3230 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3231 GvMULTI_on(tmpgv);
af8c498a 3232 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3233
bf49b057
GS		 3234 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3235 GvMULTI_on(PL_stderrgv);
3236 io = GvIOp(PL_stderrgv);
af8c498a 3237 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3238 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3239 GvMULTI_on(tmpgv);
af8c498a 3240 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3241
3280af22 3242 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3243
bf4acbe4
GS		 3244 if (PL_osname)
3245 Safefree(PL_osname);
3246 PL_osname = savepv(OSNAME);
79072805 3247}
33b78306 3248
76e3520e 3249STATIC void
cea2e8a9 3250S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3251{
79072805
LW		 3252 char *s;
3253 SV *sv;
3254 GV* tmpgv;
fe14fcc3 3255
79072805 3256 argc--,argv++; /* skip name of script */
3280af22 3257 if (PL_doswitches) {
79072805
LW		 3258 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3259 if (!argv[0][1])
3260 break;
379d538a 3261 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3262 argc--,argv++;
3263 break;
3264 }
155aba94 3265 if ((s = strchr(argv[0], '='))) {
79072805 3266 *s++ = '\0';
85e6fe83 3267 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3268 }
3269 else
85e6fe83 3270 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3271 }
79072805 3272 }
3280af22
NIS		 3273 PL_toptarget = NEWSV(0,0);
3274 sv_upgrade(PL_toptarget, SVt_PVFM);
3275 sv_setpvn(PL_toptarget, "", 0);
3276 PL_bodytarget = NEWSV(0,0);
3277 sv_upgrade(PL_bodytarget, SVt_PVFM);
3278 sv_setpvn(PL_bodytarget, "", 0);
3279 PL_formtarget = PL_bodytarget;
79072805 3280
bbce6d69 3281 TAINT;
155aba94 3282 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3283#ifdef MACOS_TRADITIONAL
3284 /* $0 is not majick on a Mac */
3285 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3286#else
3280af22 3287 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3288 magicname("0", "0", 1);
bf4acbe4 3289#endif
79072805 3290 }
155aba94 3291 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3292#ifdef OS2
23da6c43 3293 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3294#else
3280af22 3295 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3296#endif
155aba94 3297 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3298 GvMULTI_on(PL_argvgv);
3299 (void)gv_AVadd(PL_argvgv);
3300 av_clear(GvAVn(PL_argvgv));
79072805 3301 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3302 SV *sv = newSVpv(argv[0],0);
3303 av_push(GvAVn(PL_argvgv),sv);
3304 if (PL_widesyscalls)
e84ff256 3305 (void)sv_utf8_decode(sv);
79072805
LW		 3306 }
3307 }
155aba94 3308 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3309 HV *hv;
3280af22
NIS		 3310 GvMULTI_on(PL_envgv);
3311 hv = GvHVn(PL_envgv);
3312 hv_magic(hv, PL_envgv, 'E');
fa6a1c44 3313#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3314 /* Note that if the supplied env parameter is actually a copy
3315 of the global environ then it may now point to free'd memory
3316 if the environment has been modified since. To avoid this
3317 problem we treat env==NULL as meaning 'use the default'
3318 */
3319 if (!env)
3320 env = environ;
5aabfad6 3321 if (env != environ)
79072805
LW		 3322 environ[0] = Nullch;
3323 for (; *env; env++) {
93a17b20 3324 if (!(s = strchr(*env,'=')))
79072805
LW		 3325 continue;
3326 *s++ = '\0';
60ce6247 3327#if defined(MSDOS)
137443ea 3328 (void)strupr(*env);
3329#endif
79072805
LW		 3330 sv = newSVpv(s--,0);
3331 (void)hv_store(hv, *env, s - *env, sv, 0);
3332 *s = '=';
3e3baf6d
TB		 3333#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3334 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 3335 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 3336#endif
fe14fcc3 3337 }
4550b24a 3338#endif
3339#ifdef DYNAMIC_ENV_FETCH
3340 HvNAME(hv) = savepv(ENV_HV_NAME);
3341#endif
79072805 3342 }
bbce6d69 3343 TAINT_NOT;
155aba94 3344 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3345 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3346}
34de22dd 3347
76e3520e 3348STATIC void
cea2e8a9 3349S_init_perllib(pTHX)
34de22dd 3350{
85e6fe83 3351 char *s;
3280af22 3352 if (!PL_tainting) {
552a7a9b 3353#ifndef VMS
76e3520e 3354 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3355 if (s)
9c8a64f0 3356 incpush(s, TRUE, TRUE);
85e6fe83 3357 else
9c8a64f0 3358 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3359#else /* VMS */
3360 /* Treat PERL5?LIB as a possible search list logical name -- the
3361 * "natural" VMS idiom for a Unix path string. We allow each
3362 * element to be a set of |-separated directories for compatibility.
3363 */
3364 char buf[256];
3365 int idx = 0;
3366 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3367 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3368 else
9c8a64f0 3369 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3370#endif /* VMS */
85e6fe83 3371 }
34de22dd 3372
c90c0ff4 3373/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3374 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3375*/
4633a7c4 3376#ifdef APPLLIB_EXP
9c8a64f0 3377 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3378#endif
4633a7c4 3379
fed7345c 3380#ifdef ARCHLIB_EXP
9c8a64f0 3381 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3382#endif
bf4acbe4
GS		 3383#ifdef MACOS_TRADITIONAL
3384 {
3385 struct stat tmpstatbuf;
3386 SV * privdir = NEWSV(55, 0);
3387 char * macperl = PerlEnv_getenv("MACPERL");
3388
3389 if (!macperl)
3390 macperl = "";
3391
3392 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3393 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3394 incpush(SvPVX(privdir), TRUE, FALSE);
3395 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3396 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3397 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3398
bf4acbe4
GS		 3399 SvREFCNT_dec(privdir);
3400 }
3401 if (!PL_tainting)
3402 incpush(":", FALSE, FALSE);
3403#else
fed7345c 3404#ifndef PRIVLIB_EXP
65f19062 3405# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3406#endif
ac27b0f5 3407#if defined(WIN32)
9c8a64f0 3408 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3409#else
9c8a64f0 3410 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3411#endif
4633a7c4 3412
65f19062 3413#ifdef SITEARCH_EXP
3b290362
GS		 3414 /* sitearch is always relative to sitelib on Windows for
3415 * DLL-based path intuition to work correctly */
3416# if !defined(WIN32)
9c8a64f0 3417 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3418# endif
3419#endif
3420
4633a7c4 3421#ifdef SITELIB_EXP
65f19062 3422# if defined(WIN32)
9c8a64f0 3423 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3424# else
9c8a64f0 3425 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3426# endif
3427#endif
189d1e8d 3428
65f19062 3429#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3430 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3431#endif
65f19062
GS		 3432
3433#ifdef PERL_VENDORARCH_EXP
4ea817c6 3434 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3435 * DLL-based path intuition to work correctly */
3436# if !defined(WIN32)
9c8a64f0 3437 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3438# endif
4b03c463 3439#endif
65f19062
GS		 3440
3441#ifdef PERL_VENDORLIB_EXP
3442# if defined(WIN32)
9c8a64f0 3443 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3444# else
9c8a64f0 3445 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3446# endif
a3635516 3447#endif
65f19062
GS		 3448
3449#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3450 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3451#endif
65f19062 3452
3b777bb4
GS		 3453#ifdef PERL_OTHERLIBDIRS
3454 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3455#endif
3456