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One more twist to the sprintf + utf8 testing.
[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 151#ifdef USE_THREADS
a863c7d1 152#ifndef FAKE_THREADS
e1f15930 153 struct perl_thread *thr = NULL;
a863c7d1
MB		 154#endif /* FAKE_THREADS */
155#endif /* USE_THREADS */
ba869deb 156
8990e307 157#ifdef MULTIPLICITY
54aff467 158 init_interp();
ac27b0f5 159 PL_perl_destruct_level = 1;
54aff467
GS		 160#else
161 if (PL_perl_destruct_level > 0)
162 init_interp();
163#endif
164
33f46ff6 165 /* Init the real globals (and main thread)? */
3280af22 166 if (!PL_linestr) {
1feb2720 167#ifdef USE_THREADS
533c011a 168 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 169 /*
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
172 */
533c011a
NIS		 173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
ba869deb 177# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 178 MUTEX_INIT(&PL_svref_mutex);
ba869deb 179# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 180
5ff3f7a4 181 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 184
199100c8 185 thr = init_main_thread();
11343788
MB		 186#endif /* USE_THREADS */
187
14dd3ad8 188#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 190#endif
312caa8e 191
2aea9f8a
GS		 192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193
3280af22
NIS		 194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 196
3280af22 197 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 198 /* set read-only and try to insure than we wont see REFCNT==0
199 very often */
200
3280af22
NIS		 201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 203
3280af22
NIS		 204 sv_setpv(&PL_sv_no,PL_No);
205 SvNV(&PL_sv_no);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 208
3280af22
NIS		 209 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvNV(&PL_sv_yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 213 }
79072805 214
76e3520e
GS		 215#ifdef PERL_OBJECT
216 /* TODO: */
6b88bc9c 217 /* PL_sighandlerp = sighandler; */
76e3520e 218#else
cea2e8a9 219 PL_sighandlerp = Perl_sighandler;
76e3520e 220#endif
3280af22 221 PL_pidstatus = newHV();
44a8e56a 222
79072805
LW		 223#ifdef MSDOS
224 /*
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
227 * filehandles.
228 */
2b96b0a5
JH		 229 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 231#endif
232 }
233
79cb57f6 234 PL_nrs = newSVpvn("\n", 1);
3280af22 235 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 236
cea2e8a9 237 init_stacks();
79072805 238
748a9306 239 init_ids();
3280af22 240 PL_lex_state = LEX_NOTPARSING;
a5f75d66 241
312caa8e 242 JMPENV_BOOTSTRAP;
f86702cc 243 STATUS_ALL_SUCCESS;
244
0672f40e 245 init_i18nl10n(1);
36477c24 246 SET_NUMERIC_STANDARD();
0b5b802d 247
a7cb1f99
GS		 248 {
249 U8 *s;
250 PL_patchlevel = NEWSV(0,4);
155aba94 251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 254 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS		 267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 275#endif
276
52853b95
GS		 277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS		 283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
1fcf4c12
AB		 286#ifdef USE_ITHREADS
287 PL_regex_padav = newAV();
288#endif
e5dd39fc
AB		 289#ifdef USE_REENTRANT_API
290 New(31337, PL_reentrant_buffer,1, REBUF);
291 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
292#endif
8990e307 293 ENTER;
79072805
LW		 294}
295
954c1994
GS		 296/*
297=for apidoc perl_destruct
298
299Shuts down a Perl interpreter. See L<perlembed>.
300
301=cut
302*/
303
79072805 304void
0cb96387 305perl_destruct(pTHXx)
79072805 306{
748a9306 307 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 308 HV *hv;
1f2bfc8a 309#ifdef USE_THREADS
33f46ff6 310 Thread t;
cea2e8a9 311 dTHX;
1f2bfc8a 312#endif /* USE_THREADS */
8990e307 313
7766f137
GS		 314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
316
11343788 317#ifdef USE_THREADS
0f15f207 318#ifndef FAKE_THREADS
8023c3ce
MB		 319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
320 retry_cleanup:
533c011a 321 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 322 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 323 "perl_destruct: waiting for %d threads...\n",
533c011a 324 PL_nthreads - 1));
33f46ff6 325 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
328 AV *av;
c7848ba1 329 case THRf_ZOMBIE:
bf49b057 330 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 331 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
533c011a 334 PL_nthreads--;
8023c3ce
MB		 335 /*
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
339 * all over again.
340 */
533c011a 341 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 342 JOIN(t, &av);
605e5515 343 SvREFCNT_dec((SV*)av);
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 345 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 346 goto retry_cleanup;
c7848ba1 347 case THRf_R_JOINABLE:
bf49b057 348 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 351 /*
c7848ba1
MB		 352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
356 */
533c011a 357 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 358 DETACH(t);
359 MUTEX_UNLOCK(&t->mutex);
8023c3ce 360 goto retry_cleanup;
c7848ba1 361 default:
bf49b057 362 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 363 "perl_destruct: ignoring %p (state %u)\n",
364 t, ThrSTATE(t)));
365 MUTEX_UNLOCK(&t->mutex);
c7848ba1 366 /* fall through and out */
33f46ff6
MB		 367 }
368 }
8023c3ce
MB		 369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
370
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 372 while (PL_nthreads > 1)
11343788 373 {
bf49b057 374 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 375 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 376 PL_nthreads - 1));
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 378 }
379 /* At this point, we're the last thread */
533c011a 380 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
b57a092c 384 PL_nthreads--;
0f15f207 385#endif /* !defined(FAKE_THREADS) */
11343788
MB		 386#endif /* USE_THREADS */
387
3280af22 388 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 389#ifdef DEBUGGING
390 {
391 char *s;
155aba94 392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 393 int i = atoi(s);
394 if (destruct_level < i)
395 destruct_level = i;
396 }
4633a7c4
LW		 397 }
398#endif
399
26f423df 400 {
f3faeb53
AB		 401 dJMPENV;
402 int x = 0;
403
404 JMPENV_PUSH(x);
405 if (PL_endav && !PL_minus_c)
406 call_list(PL_scopestack_ix, PL_endav);
407 JMPENV_POP;
26f423df 408 }
f3faeb53 409 LEAVE;
a0d0e21e
LW		 410 FREETMPS;
411
ff0cee69 412 /* We must account for everything. */
413
414 /* Destroy the main CV and syntax tree */
3280af22
NIS		 415 if (PL_main_root) {
416 PL_curpad = AvARRAY(PL_comppad);
417 op_free(PL_main_root);
418 PL_main_root = Nullop;
a0d0e21e 419 }
3280af22
NIS		 420 PL_curcop = &PL_compiling;
421 PL_main_start = Nullop;
422 SvREFCNT_dec(PL_main_cv);
423 PL_main_cv = Nullcv;
24d3c518 424 PL_dirty = TRUE;
ff0cee69 425
13621cfb
NIS		 426 /* Tell PerlIO we are about to tear things apart in case
427 we have layers which are using resources that should
428 be cleaned up now.
429 */
430
431 PerlIO_destruct(aTHX);
432
3280af22 433 if (PL_sv_objcount) {
a0d0e21e
LW		 434 /*
435 * Try to destruct global references. We do this first so that the
436 * destructors and destructees still exist. Some sv's might remain.
437 * Non-referenced objects are on their own.
438 */
a0d0e21e 439 sv_clean_objs();
8990e307
LW		 440 }
441
5cd24f17 442 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 443 SvREFCNT_dec(PL_warnhook);
444 PL_warnhook = Nullsv;
445 SvREFCNT_dec(PL_diehook);
446 PL_diehook = Nullsv;
5cd24f17 447
4b556e6c 448 /* call exit list functions */
3280af22 449 while (PL_exitlistlen-- > 0)
0cb96387 450 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 451
3280af22 452 Safefree(PL_exitlist);
4b556e6c 453
a0d0e21e 454 if (destruct_level == 0){
8990e307 455
a0d0e21e 456 DEBUG_P(debprofdump());
ac27b0f5 457
a0d0e21e
LW		 458 /* The exit() function will do everything that needs doing. */
459 return;
460 }
5dd60ef7 461
551a8b83
JH		 462 /* jettison our possibly duplicated environment */
463
464#ifdef USE_ENVIRON_ARRAY
465 if (environ != PL_origenviron) {
466 I32 i;
467
468 for (i = 0; environ[i]; i++)
4b420006
JH		 469 safesysfree(environ[i]);
470 /* Must use safesysfree() when working with environ. */
471 safesysfree(environ);
551a8b83
JH		 472
473 environ = PL_origenviron;
474 }
475#endif
476
5f8cb046
DM		 477#ifdef USE_ITHREADS
478 /* the syntax tree is shared between clones
479 * so op_free(PL_main_root) only ReREFCNT_dec's
480 * REGEXPs in the parent interpreter
481 * we need to manually ReREFCNT_dec for the clones
482 */
483 {
484 I32 i = AvFILLp(PL_regex_padav) + 1;
485 SV **ary = AvARRAY(PL_regex_padav);
486
487 while (i) {
35061a7e
DM		 488 SV *resv = ary[--i];
489 REGEXP *re = (REGEXP *)SvIVX(resv);
490
491 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 492 /* this is PL_reg_curpm, already freed
35061a7e
DM		 493 * flag is set in regexec.c:S_regtry
494 */
495 SvFLAGS(resv) &= ~SVf_BREAK;
496 }
497 else {
5f8cb046
DM		 498 ReREFCNT_dec(re);
499 }
500 }
501 }
502 SvREFCNT_dec(PL_regex_padav);
503 PL_regex_padav = Nullav;
504 PL_regex_pad = NULL;
505#endif
506
5f05dabc 507 /* loosen bonds of global variables */
508
3280af22
NIS		 509 if(PL_rsfp) {
510 (void)PerlIO_close(PL_rsfp);
511 PL_rsfp = Nullfp;
8ebc5c01 512 }
513
514 /* Filters for program text */
3280af22
NIS		 515 SvREFCNT_dec(PL_rsfp_filters);
516 PL_rsfp_filters = Nullav;
8ebc5c01 517
518 /* switches */
3280af22
NIS		 519 PL_preprocess = FALSE;
520 PL_minus_n = FALSE;
521 PL_minus_p = FALSE;
522 PL_minus_l = FALSE;
523 PL_minus_a = FALSE;
524 PL_minus_F = FALSE;
525 PL_doswitches = FALSE;
599cee73 526 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 527 PL_doextract = FALSE;
528 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 529 PL_unsafe = FALSE;
530
531 Safefree(PL_inplace);
532 PL_inplace = Nullch;
a7cb1f99 533 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 534
535 if (PL_e_script) {
536 SvREFCNT_dec(PL_e_script);
537 PL_e_script = Nullsv;
8ebc5c01 538 }
539
bc0a45ed
DM		 540 while (--PL_origargc >= 0) {
541 Safefree(PL_origargv[PL_origargc]);
542 }
543 Safefree(PL_origargv);
544
8ebc5c01 545 /* magical thingies */
546
7889fe52
NIS		 547 SvREFCNT_dec(PL_ofs_sv); /* $, */
548 PL_ofs_sv = Nullsv;
5f05dabc 549
7889fe52
NIS		 550 SvREFCNT_dec(PL_ors_sv); /* $\ */
551 PL_ors_sv = Nullsv;
8ebc5c01 552
3280af22
NIS		 553 SvREFCNT_dec(PL_rs); /* $/ */
554 PL_rs = Nullsv;
dc92893f 555
3280af22
NIS		 556 SvREFCNT_dec(PL_nrs); /* $/ helper */
557 PL_nrs = Nullsv;
5f05dabc 558
d33b2eba
GS		 559 PL_multiline = 0; /* $* */
560 Safefree(PL_osname); /* $^O */
561 PL_osname = Nullch;
5f05dabc 562
3280af22
NIS		 563 SvREFCNT_dec(PL_statname);
564 PL_statname = Nullsv;
565 PL_statgv = Nullgv;
5f05dabc 566
8ebc5c01 567 /* defgv, aka *_ should be taken care of elsewhere */
568
8ebc5c01 569 /* clean up after study() */
3280af22
NIS		 570 SvREFCNT_dec(PL_lastscream);
571 PL_lastscream = Nullsv;
572 Safefree(PL_screamfirst);
573 PL_screamfirst = 0;
574 Safefree(PL_screamnext);
575 PL_screamnext = 0;
8ebc5c01 576
7d5ea4e7
GS		 577 /* float buffer */
578 Safefree(PL_efloatbuf);
579 PL_efloatbuf = Nullch;
580 PL_efloatsize = 0;
581
8ebc5c01 582 /* startup and shutdown function lists */
3280af22
NIS		 583 SvREFCNT_dec(PL_beginav);
584 SvREFCNT_dec(PL_endav);
7d30b5c4 585 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 586 SvREFCNT_dec(PL_initav);
587 PL_beginav = Nullav;
588 PL_endav = Nullav;
7d30b5c4 589 PL_checkav = Nullav;
3280af22 590 PL_initav = Nullav;
5618dfe8 591
8ebc5c01 592 /* shortcuts just get cleared */
3280af22 593 PL_envgv = Nullgv;
3280af22
NIS		 594 PL_incgv = Nullgv;
595 PL_hintgv = Nullgv;
596 PL_errgv = Nullgv;
597 PL_argvgv = Nullgv;
598 PL_argvoutgv = Nullgv;
599 PL_stdingv = Nullgv;
bf49b057 600 PL_stderrgv = Nullgv;
3280af22
NIS		 601 PL_last_in_gv = Nullgv;
602 PL_replgv = Nullgv;
5c831c24 603 PL_debstash = Nullhv;
8ebc5c01 604
605 /* reset so print() ends up where we expect */
606 setdefout(Nullgv);
5c831c24 607
7a1c5554
GS		 608 SvREFCNT_dec(PL_argvout_stack);
609 PL_argvout_stack = Nullav;
8ebc5c01 610
5c831c24
GS		 611 SvREFCNT_dec(PL_modglobal);
612 PL_modglobal = Nullhv;
613 SvREFCNT_dec(PL_preambleav);
614 PL_preambleav = Nullav;
615 SvREFCNT_dec(PL_subname);
616 PL_subname = Nullsv;
617 SvREFCNT_dec(PL_linestr);
618 PL_linestr = Nullsv;
619 SvREFCNT_dec(PL_pidstatus);
620 PL_pidstatus = Nullhv;
621 SvREFCNT_dec(PL_toptarget);
622 PL_toptarget = Nullsv;
623 SvREFCNT_dec(PL_bodytarget);
624 PL_bodytarget = Nullsv;
625 PL_formtarget = Nullsv;
626
d33b2eba 627 /* free locale stuff */
b9582b6a 628#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 629 Safefree(PL_collation_name);
630 PL_collation_name = Nullch;
b9582b6a 631#endif
d33b2eba 632
b9582b6a 633#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 634 Safefree(PL_numeric_name);
635 PL_numeric_name = Nullch;
a453c169 636 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 637#endif
d33b2eba 638
5c831c24
GS		 639 /* clear utf8 character classes */
640 SvREFCNT_dec(PL_utf8_alnum);
641 SvREFCNT_dec(PL_utf8_alnumc);
642 SvREFCNT_dec(PL_utf8_ascii);
643 SvREFCNT_dec(PL_utf8_alpha);
644 SvREFCNT_dec(PL_utf8_space);
645 SvREFCNT_dec(PL_utf8_cntrl);
646 SvREFCNT_dec(PL_utf8_graph);
647 SvREFCNT_dec(PL_utf8_digit);
648 SvREFCNT_dec(PL_utf8_upper);
649 SvREFCNT_dec(PL_utf8_lower);
650 SvREFCNT_dec(PL_utf8_print);
651 SvREFCNT_dec(PL_utf8_punct);
652 SvREFCNT_dec(PL_utf8_xdigit);
653 SvREFCNT_dec(PL_utf8_mark);
654 SvREFCNT_dec(PL_utf8_toupper);
655 SvREFCNT_dec(PL_utf8_tolower);
656 PL_utf8_alnum = Nullsv;
657 PL_utf8_alnumc = Nullsv;
658 PL_utf8_ascii = Nullsv;
659 PL_utf8_alpha = Nullsv;
660 PL_utf8_space = Nullsv;
661 PL_utf8_cntrl = Nullsv;
662 PL_utf8_graph = Nullsv;
663 PL_utf8_digit = Nullsv;
664 PL_utf8_upper = Nullsv;
665 PL_utf8_lower = Nullsv;
666 PL_utf8_print = Nullsv;
667 PL_utf8_punct = Nullsv;
668 PL_utf8_xdigit = Nullsv;
669 PL_utf8_mark = Nullsv;
670 PL_utf8_toupper = Nullsv;
671 PL_utf8_totitle = Nullsv;
672 PL_utf8_tolower = Nullsv;
673
971a9dd3
GS		 674 if (!specialWARN(PL_compiling.cop_warnings))
675 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 676 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 677 if (!specialCopIO(PL_compiling.cop_io))
678 SvREFCNT_dec(PL_compiling.cop_io);
679 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 680#ifdef USE_ITHREADS
681 Safefree(CopFILE(&PL_compiling));
682 CopFILE(&PL_compiling) = Nullch;
683 Safefree(CopSTASHPV(&PL_compiling));
684#else
01724ea0 685 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 686 CopFILEGV(&PL_compiling) = Nullgv;
687 /* cop_stash is not refcounted */
01724ea0 688#endif
5c831c24 689
a0d0e21e 690 /* Prepare to destruct main symbol table. */
5f05dabc 691
3280af22
NIS		 692 hv = PL_defstash;
693 PL_defstash = 0;
a0d0e21e 694 SvREFCNT_dec(hv);
5c831c24
GS		 695 SvREFCNT_dec(PL_curstname);
696 PL_curstname = Nullsv;
a0d0e21e 697
5a844595
GS		 698 /* clear queued errors */
699 SvREFCNT_dec(PL_errors);
700 PL_errors = Nullsv;
701
a0d0e21e 702 FREETMPS;
0453d815 703 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 704 if (PL_scopestack_ix != 0)
0453d815
PM		 705 Perl_warner(aTHX_ WARN_INTERNAL,
706 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 707 (long)PL_scopestack_ix);
708 if (PL_savestack_ix != 0)
0453d815
PM		 709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 711 (long)PL_savestack_ix);
712 if (PL_tmps_floor != -1)
0453d815 713 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 714 (long)PL_tmps_floor + 1);
a0d0e21e 715 if (cxstack_ix != -1)
0453d815 716 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 717 (long)cxstack_ix + 1);
a0d0e21e 718 }
8990e307
LW		 719
720 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 721 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 722 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 723
724 /* the 2 is for PL_fdpid and PL_strtab */
725 while (PL_sv_count > 2 && sv_clean_all())
726 ;
727
d33b2eba
GS		 728 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
729 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 730 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
731 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 732
d4777f27
GS		 733 AvREAL_off(PL_fdpid); /* no surviving entries */
734 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 735 PL_fdpid = Nullav;
736
6c644e78
GS		 737#ifdef HAVE_INTERP_INTERN
738 sys_intern_clear();
739#endif
740
6e72f9df 741 /* Destruct the global string table. */
742 {
743 /* Yell and reset the HeVAL() slots that are still holding refcounts,
744 * so that sv_free() won't fail on them.
745 */
746 I32 riter;
747 I32 max;
748 HE *hent;
749 HE **array;
750
751 riter = 0;
3280af22
NIS		 752 max = HvMAX(PL_strtab);
753 array = HvARRAY(PL_strtab);
6e72f9df 754 hent = array[0];
755 for (;;) {
0453d815
PM		 756 if (hent && ckWARN_d(WARN_INTERNAL)) {
757 Perl_warner(aTHX_ WARN_INTERNAL,
758 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 759 HeVAL(hent) - Nullsv, HeKEY(hent));
760 HeVAL(hent) = Nullsv;
761 hent = HeNEXT(hent);
762 }
763 if (!hent) {
764 if (++riter > max)
765 break;
766 hent = array[riter];
767 }
768 }
769 }
3280af22 770 SvREFCNT_dec(PL_strtab);
6e72f9df 771
e652bb2f 772#ifdef USE_ITHREADS
a0739874
DM		 773 /* free the pointer table used for cloning */
774 ptr_table_free(PL_ptr_table);
53186e96 775#endif
a0739874 776
d33b2eba
GS		 777 /* free special SVs */
778
779 SvREFCNT(&PL_sv_yes) = 0;
780 sv_clear(&PL_sv_yes);
781 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 782 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 783
784 SvREFCNT(&PL_sv_no) = 0;
785 sv_clear(&PL_sv_no);
786 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 787 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 788
789 SvREFCNT(&PL_sv_undef) = 0;
790 SvREADONLY_off(&PL_sv_undef);
d33b2eba 791
0453d815
PM		 792 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
793 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 794
3280af22 795 Safefree(PL_origfilename);
3280af22 796 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 797 if (PL_reg_curpm)
798 Safefree(PL_reg_curpm);
82ba1be6 799 Safefree(PL_reg_poscache);
3280af22
NIS		 800 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
801 Safefree(PL_op_mask);
cf36064f
GS		 802 Safefree(PL_psig_ptr);
803 Safefree(PL_psig_name);
2c2666fc 804 Safefree(PL_bitcount);
ce08f86c 805 Safefree(PL_psig_pend);
6e72f9df 806 nuke_stacks();
3280af22 807 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 808
a0d0e21e 809 DEBUG_P(debprofdump());
11343788 810#ifdef USE_THREADS
5f08fbcd 811 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 812 MUTEX_DESTROY(&PL_sv_mutex);
813 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 814 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 815 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 816 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 817#ifdef EMULATE_ATOMIC_REFCOUNTS
818 MUTEX_DESTROY(&PL_svref_mutex);
819#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 820
8023c3ce 821 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 822 Safefree(SvPVX(PL_thrsv));
823 Safefree(SvANY(PL_thrsv));
824 Safefree(PL_thrsv);
825 PL_thrsv = Nullsv;
8023c3ce 826#endif /* USE_THREADS */
d33b2eba 827
e5dd39fc
AB		 828#ifdef USE_REENTRANT_API
829 Safefree(PL_reentrant_buffer->tmbuff);
830 Safefree(PL_reentrant_buffer);
831#endif
832
612f20c3
GS		 833 sv_free_arenas();
834
fc36a67e 835 /* As the absolutely last thing, free the non-arena SV for mess() */
836
3280af22 837 if (PL_mess_sv) {
9c63abab
GS		 838 /* it could have accumulated taint magic */
839 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
840 MAGIC* mg;
841 MAGIC* moremagic;
842 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
843 moremagic = mg->mg_moremagic;
14befaf4
DM		 844 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
845 && mg->mg_len >= 0)
9c63abab
GS		 846 Safefree(mg->mg_ptr);
847 Safefree(mg);
848 }
849 }
fc36a67e 850 /* we know that type >= SVt_PV */
155aba94 851 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 852 Safefree(SvPVX(PL_mess_sv));
853 Safefree(SvANY(PL_mess_sv));
854 Safefree(PL_mess_sv);
855 PL_mess_sv = Nullsv;
fc36a67e 856 }
79072805
LW		 857}
858
954c1994
GS		 859/*
860=for apidoc perl_free
861
862Releases a Perl interpreter. See L<perlembed>.
863
864=cut
865*/
866
79072805 867void
0cb96387 868perl_free(pTHXx)
79072805 869{
c5be433b 870#if defined(PERL_OBJECT)
7f0d82f7 871 PerlMem_free(this);
76e3520e 872#else
2986a63f 873# if defined(WIN32) || defined(NETWARE)
ce3e5b80 874# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH		 875 #ifdef NETWARE
876 void *host = nw_internal_host;
877 #else
878 void *host = w32_internal_host;
879 #endif
880 #ifndef NETWARE
881 if (PerlProc_lasthost()) {
ce08f86c 882 PerlIO_cleanup();
2986a63f
JH		 883 }
884 #endif
7f0d82f7 885 PerlMem_free(aTHXx);
2986a63f
JH		 886 #ifdef NETWARE
887 nw5_delete_internal_host(host);
888 #else
889 win32_delete_internal_host(host);
890 #endif
ce3e5b80 891#else
ce08f86c 892 PerlIO_cleanup();
ce3e5b80
NIS		 893 PerlMem_free(aTHXx);
894#endif
1c0ca838
GS		 895# else
896 PerlMem_free(aTHXx);
897# endif
76e3520e 898#endif
79072805
LW		 899}
900
4b556e6c 901void
864dbfa3 902Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 903{
3280af22
NIS		 904 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
905 PL_exitlist[PL_exitlistlen].fn = fn;
906 PL_exitlist[PL_exitlistlen].ptr = ptr;
907 ++PL_exitlistlen;
4b556e6c
JD		 908}
909
954c1994
GS		 910/*
911=for apidoc perl_parse
912
913Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
914
915=cut
916*/
917
79072805 918int
0cb96387 919perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 920{
6224f72b 921 I32 oldscope;
6224f72b 922 int ret;
db36c5a1 923 dJMPENV;
cea2e8a9
GS		 924#ifdef USE_THREADS
925 dTHX;
926#endif
8d063cd8 927
a687059c
LW		 928#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
929#ifdef IAMSUID
930#undef IAMSUID
cea2e8a9 931 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 932setuid perl scripts securely.\n");
933#endif
934#endif
935
8f1f23e8 936#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 937 _dyld_lookup_and_bind
938 ("__environ", (unsigned long *) &environ_pointer, NULL);
939#endif /* environ */
940
3280af22 941 PL_origargc = argc;
bc0a45ed
DM		 942 {
943 /* we copy rather than point to argv
944 * since perl_clone will copy and perl_destruct
945 * has no way of knowing if we've made a copy or
946 * just point to argv
947 */
948 int i = PL_origargc;
949 New(0, PL_origargv, i+1, char*);
950 PL_origargv[i] = '\0';
951 while (i-- > 0) {
952 PL_origargv[i] = savepv(argv[i]);
953 }
954 }
955
fa6a1c44 956#ifdef USE_ENVIRON_ARRAY
3280af22 957 PL_origenviron = environ;
a0d0e21e
LW		 958#endif
959
3280af22 960 if (PL_do_undump) {
a0d0e21e
LW		 961
962 /* Come here if running an undumped a.out. */
963
3280af22
NIS		 964 PL_origfilename = savepv(argv[0]);
965 PL_do_undump = FALSE;
a0d0e21e 966 cxstack_ix = -1; /* start label stack again */
748a9306 967 init_ids();
a0d0e21e
LW		 968 init_postdump_symbols(argc,argv,env);
969 return 0;
970 }
971
3280af22
NIS		 972 if (PL_main_root) {
973 PL_curpad = AvARRAY(PL_comppad);
974 op_free(PL_main_root);
975 PL_main_root = Nullop;
ff0cee69 976 }
3280af22
NIS		 977 PL_main_start = Nullop;
978 SvREFCNT_dec(PL_main_cv);
979 PL_main_cv = Nullcv;
79072805 980
3280af22
NIS		 981 time(&PL_basetime);
982 oldscope = PL_scopestack_ix;
599cee73 983 PL_dowarn = G_WARN_OFF;
f86702cc 984
14dd3ad8
GS		 985#ifdef PERL_FLEXIBLE_EXCEPTIONS
986 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
987#else
988 JMPENV_PUSH(ret);
989#endif
6224f72b 990 switch (ret) {
312caa8e 991 case 0:
14dd3ad8
GS		 992#ifndef PERL_FLEXIBLE_EXCEPTIONS
993 parse_body(env,xsinit);
994#endif
7d30b5c4
GS		 995 if (PL_checkav)
996 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 997 ret = 0;
998 break;
6224f72b
GS		 999 case 1:
1000 STATUS_ALL_FAILURE;
1001 /* FALL THROUGH */
1002 case 2:
1003 /* my_exit() was called */
3280af22 1004 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1005 LEAVE;
1006 FREETMPS;
3280af22 1007 PL_curstash = PL_defstash;
7d30b5c4
GS		 1008 if (PL_checkav)
1009 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1010 ret = STATUS_NATIVE_EXPORT;
1011 break;
6224f72b 1012 case 3:
bf49b057 1013 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1014 ret = 1;
1015 break;
6224f72b 1016 }
14dd3ad8
GS		 1017 JMPENV_POP;
1018 return ret;
1019}
1020
1021#ifdef PERL_FLEXIBLE_EXCEPTIONS
1022STATIC void *
1023S_vparse_body(pTHX_ va_list args)
1024{
1025 char **env = va_arg(args, char**);
1026 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1027
1028 return parse_body(env, xsinit);
312caa8e 1029}
14dd3ad8 1030#endif
312caa8e
CS		 1031
1032STATIC void *
14dd3ad8 1033S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1034{
312caa8e
CS		 1035 int argc = PL_origargc;
1036 char **argv = PL_origargv;
312caa8e
CS		 1037 char *scriptname = NULL;
1038 int fdscript = -1;
1039 VOL bool dosearch = FALSE;
1040 char *validarg = "";
1041 AV* comppadlist;
1042 register SV *sv;
1043 register char *s;
659ca9ea 1044 char *popts, *cddir = Nullch;
312caa8e 1045
3280af22 1046 sv_setpvn(PL_linestr,"",0);
79cb57f6 1047 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1048 SAVEFREESV(sv);
1049 init_main_stash();
54310121 1050
6224f72b
GS		 1051 for (argc--,argv++; argc > 0; argc--,argv++) {
1052 if (argv[0][0] != '-' || !argv[0][1])
1053 break;
1054#ifdef DOSUID
1055 if (*validarg)
1056 validarg = " PHOOEY ";
1057 else
1058 validarg = argv[0];
13281fa4 1059#endif
6224f72b
GS		 1060 s = argv[0]+1;
1061 reswitch:
1062 switch (*s) {
729a02f2
GS		 1063 case 'C':
1064#ifdef WIN32
c0932edc 1065 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1066 /* FALL THROUGH */
1067#endif
1d5472a9
GS		 1068#ifndef PERL_STRICT_CR
1069 case '\r':
1070#endif
6224f72b
GS		 1071 case ' ':
1072 case '0':
1073 case 'F':
1074 case 'a':
1075 case 'c':
1076 case 'd':
1077 case 'D':
1078 case 'h':
1079 case 'i':
1080 case 'l':
1081 case 'M':
1082 case 'm':
1083 case 'n':
1084 case 'p':
1085 case 's':
1086 case 'u':
1087 case 'U':
1088 case 'v':
599cee73
PM		 1089 case 'W':
1090 case 'X':
6224f72b 1091 case 'w':
155aba94 1092 if ((s = moreswitches(s)))
6224f72b
GS		 1093 goto reswitch;
1094 break;
33b78306 1095
6224f72b 1096 case 'T':
3280af22 1097 PL_tainting = TRUE;
6224f72b
GS		 1098 s++;
1099 goto reswitch;
f86702cc 1100
6224f72b 1101 case 'e':
bf4acbe4
GS		 1102#ifdef MACOS_TRADITIONAL
1103 /* ignore -e for Dev:Pseudo argument */
1104 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1105 break;
bf4acbe4 1106#endif
3280af22 1107 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1108 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1109 if (!PL_e_script) {
79cb57f6 1110 PL_e_script = newSVpvn("",0);
0cb96387 1111 filter_add(read_e_script, NULL);
6224f72b
GS		 1112 }
1113 if (*++s)
3280af22 1114 sv_catpv(PL_e_script, s);
6224f72b 1115 else if (argv[1]) {
3280af22 1116 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1117 argc--,argv++;
1118 }
1119 else
cea2e8a9 1120 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1121 sv_catpv(PL_e_script, "\n");
6224f72b 1122 break;
afe37c7d 1123
6224f72b
GS		 1124 case 'I': /* -I handled both here and in moreswitches() */
1125 forbid_setid("-I");
1126 if (!*++s && (s=argv[1]) != Nullch) {
1127 argc--,argv++;
1128 }
6224f72b 1129 if (s && *s) {
0df16ed7
GS		 1130 char *p;
1131 STRLEN len = strlen(s);
1132 p = savepvn(s, len);
9c8a64f0 1133 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1134 sv_catpvn(sv, "-I", 2);
1135 sv_catpvn(sv, p, len);
1136 sv_catpvn(sv, " ", 1);
6224f72b 1137 Safefree(p);
0df16ed7
GS		 1138 }
1139 else
a67e862a 1140 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1141 break;
1142 case 'P':
1143 forbid_setid("-P");
3280af22 1144 PL_preprocess = TRUE;
6224f72b
GS		 1145 s++;
1146 goto reswitch;
1147 case 'S':
1148 forbid_setid("-S");
1149 dosearch = TRUE;
1150 s++;
1151 goto reswitch;
1152 case 'V':
3280af22
NIS		 1153 if (!PL_preambleav)
1154 PL_preambleav = newAV();
1155 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1156 if (*++s != ':') {
3280af22 1157 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1158#ifdef VMS
6b88bc9c 1159 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1160#else
3280af22 1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1162#endif
3280af22 1163 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1164# ifdef DEBUGGING
3280af22 1165 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1166# endif
6224f72b 1167# ifdef MULTIPLICITY
8f872242 1168 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1169# endif
b363f7ed
GS		 1170# ifdef USE_THREADS
1171 sv_catpv(PL_Sv," USE_THREADS");
1172# endif
ac5e8965
JH		 1173# ifdef USE_ITHREADS
1174 sv_catpv(PL_Sv," USE_ITHREADS");
1175# endif
10cc9d2a
JH		 1176# ifdef USE_64_BIT_INT
1177 sv_catpv(PL_Sv," USE_64_BIT_INT");
1178# endif
1179# ifdef USE_64_BIT_ALL
1180 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1181# endif
1182# ifdef USE_LONG_DOUBLE
1183 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1184# endif
53430762
JH		 1185# ifdef USE_LARGE_FILES
1186 sv_catpv(PL_Sv," USE_LARGE_FILES");
1187# endif
ac5e8965
JH		 1188# ifdef USE_SOCKS
1189 sv_catpv(PL_Sv," USE_SOCKS");
1190# endif
b363f7ed
GS		 1191# ifdef PERL_OBJECT
1192 sv_catpv(PL_Sv," PERL_OBJECT");
1193# endif
1194# ifdef PERL_IMPLICIT_CONTEXT
1195 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1196# endif
1197# ifdef PERL_IMPLICIT_SYS
1198 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1199# endif
3280af22 1200 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1201
6224f72b
GS		 1202#if defined(LOCAL_PATCH_COUNT)
1203 if (LOCAL_PATCH_COUNT > 0) {
1204 int i;
3280af22 1205 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1206 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1207 if (PL_localpatches[i])
cea2e8a9 1208 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1209 }
1210 }
1211#endif
cea2e8a9 1212 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1213#ifdef __DATE__
1214# ifdef __TIME__
cea2e8a9 1215 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1216# else
cea2e8a9 1217 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1218# endif
1219#endif
3280af22 1220 sv_catpv(PL_Sv, "; \
6224f72b 1221$\"=\"\\n \"; \
69fcd688
JH		 1222@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1223#ifdef __CYGWIN__
1224 sv_catpv(PL_Sv,"\
1225push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1226#endif
1227 sv_catpv(PL_Sv, "\
6224f72b
GS		 1228print \" \\%ENV:\\n @env\\n\" if @env; \
1229print \" \\@INC:\\n @INC\\n\";");
1230 }
1231 else {
3280af22
NIS		 1232 PL_Sv = newSVpv("config_vars(qw(",0);
1233 sv_catpv(PL_Sv, ++s);
1234 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1235 s += strlen(s);
1236 }
3280af22 1237 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1238 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1239 goto reswitch;
1240 case 'x':
3280af22 1241 PL_doextract = TRUE;
6224f72b
GS		 1242 s++;
1243 if (*s)
f4c556ac 1244 cddir = s;
6224f72b
GS		 1245 break;
1246 case 0:
1247 break;
1248 case '-':
1249 if (!*++s || isSPACE(*s)) {
1250 argc--,argv++;
1251 goto switch_end;
1252 }
1253 /* catch use of gnu style long options */
1254 if (strEQ(s, "version")) {
1255 s = "v";
1256 goto reswitch;
1257 }
1258 if (strEQ(s, "help")) {
1259 s = "h";
1260 goto reswitch;
1261 }
1262 s--;
1263 /* FALL THROUGH */
1264 default:
cea2e8a9 1265 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1266 }
1267 }
6224f72b 1268 switch_end:
54310121 1269
f675dbe5
CB		 1270 if (
1271#ifndef SECURE_INTERNAL_GETENV
1272 !PL_tainting &&
1273#endif
659ca9ea 1274 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1275 {
659ca9ea 1276 s = savepv(popts);
74288ac8
GS		 1277 while (isSPACE(*s))
1278 s++;
1279 if (*s == '-' && *(s+1) == 'T')
1280 PL_tainting = TRUE;
1281 else {
1282 while (s && *s) {
4ea8f8fb 1283 char *d;
74288ac8
GS		 1284 while (isSPACE(*s))
1285 s++;
1286 if (*s == '-') {
1287 s++;
1288 if (isSPACE(*s))
1289 continue;
1290 }
4ea8f8fb 1291 d = s;
74288ac8
GS		 1292 if (!*s)
1293 break;
1294 if (!strchr("DIMUdmw", *s))
cea2e8a9 1295 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1296 while (++s && *s) {
1297 if (isSPACE(*s)) {
1298 *s++ = '\0';
1299 break;
1300 }
1301 }
1302 moreswitches(d);
6224f72b 1303 }
6224f72b
GS		 1304 }
1305 }
a0d0e21e 1306
6224f72b
GS		 1307 if (!scriptname)
1308 scriptname = argv[0];
3280af22 1309 if (PL_e_script) {
6224f72b
GS		 1310 argc++,argv--;
1311 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1312 }
1313 else if (scriptname == Nullch) {
1314#ifdef MSDOS
1315 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1316 moreswitches("h");
1317#endif
1318 scriptname = "-";
1319 }
1320
1321 init_perllib();
1322
1323 open_script(scriptname,dosearch,sv,&fdscript);
1324
1325 validate_suid(validarg, scriptname,fdscript);
1326
64ca3a65 1327#ifndef PERL_MICRO
0b5b802d
GS		 1328#if defined(SIGCHLD) || defined(SIGCLD)
1329 {
1330#ifndef SIGCHLD
1331# define SIGCHLD SIGCLD
1332#endif
1333 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1334 if (sigstate == SIG_IGN) {
1335 if (ckWARN(WARN_SIGNAL))
1336 Perl_warner(aTHX_ WARN_SIGNAL,
1337 "Can't ignore signal CHLD, forcing to default");
1338 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1339 }
1340 }
1341#endif
64ca3a65 1342#endif
0b5b802d 1343
bf4acbe4
GS		 1344#ifdef MACOS_TRADITIONAL
1345 if (PL_doextract || gMacPerl_AlwaysExtract) {
1346#else
f4c556ac 1347 if (PL_doextract) {
bf4acbe4 1348#endif
6224f72b 1349 find_beginning();
f4c556ac
GS		 1350 if (cddir && PerlDir_chdir(cddir) < 0)
1351 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1352
1353 }
6224f72b 1354
3280af22
NIS		 1355 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1356 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1357 CvUNIQUE_on(PL_compcv);
1358
1359 PL_comppad = newAV();
1360 av_push(PL_comppad, Nullsv);
1361 PL_curpad = AvARRAY(PL_comppad);
1362 PL_comppad_name = newAV();
1363 PL_comppad_name_fill = 0;
1364 PL_min_intro_pending = 0;
1365 PL_padix = 0;
6224f72b 1366#ifdef USE_THREADS
79cb57f6 1367 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1368 PL_curpad[0] = (SV*)newAV();
1369 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1370 CvOWNER(PL_compcv) = 0;
1371 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1372 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1373#endif /* USE_THREADS */
1374
1375 comppadlist = newAV();
1376 AvREAL_off(comppadlist);
3280af22
NIS		 1377 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1378 av_store(comppadlist, 1, (SV*)PL_comppad);
1379 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1380
0c4f7ff0 1381 boot_core_PerlIO();
6224f72b 1382 boot_core_UNIVERSAL();
9a34ef1d 1383#ifndef PERL_MICRO
09bef843 1384 boot_core_xsutils();
9a34ef1d 1385#endif
6224f72b
GS		 1386
1387 if (xsinit)
0cb96387 1388 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1389#ifndef PERL_MICRO
ed79a026 1390#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1391 init_os_extras();
6224f72b 1392#endif
64ca3a65 1393#endif
6224f72b 1394
29209bc5 1395#ifdef USE_SOCKS
1b9c9cf5
DH		 1396# ifdef HAS_SOCKS5_INIT
1397 socks5_init(argv[0]);
1398# else
29209bc5 1399 SOCKSinit(argv[0]);
1b9c9cf5 1400# endif
ac27b0f5 1401#endif
29209bc5 1402
6224f72b
GS		 1403 init_predump_symbols();
1404 /* init_postdump_symbols not currently designed to be called */
1405 /* more than once (ENV isn't cleared first, for example) */
1406 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1407 if (!PL_do_undump)
6224f72b
GS		 1408 init_postdump_symbols(argc,argv,env);
1409
1410 init_lexer();
1411
1412 /* now parse the script */
1413
1414 SETERRNO(0,SS$_NORMAL);
3280af22 1415 PL_error_count = 0;
bf4acbe4
GS		 1416#ifdef MACOS_TRADITIONAL
1417 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1418 if (PL_minus_c)
1419 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1420 else {
1421 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1422 MacPerl_MPWFileName(PL_origfilename));
1423 }
1424 }
1425#else
3280af22
NIS		 1426 if (yyparse() || PL_error_count) {
1427 if (PL_minus_c)
cea2e8a9 1428 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1429 else {
cea2e8a9 1430 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1431 PL_origfilename);
6224f72b
GS		 1432 }
1433 }
bf4acbe4 1434#endif
57843af0 1435 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1436 PL_curstash = PL_defstash;
1437 PL_preprocess = FALSE;
1438 if (PL_e_script) {
1439 SvREFCNT_dec(PL_e_script);
1440 PL_e_script = Nullsv;
6224f72b
GS		 1441 }
1442
1443 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1444 SvREFCNT_dec(PL_rs);
1445 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1446 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1447 if (PL_do_undump)
6224f72b
GS		 1448 my_unexec();
1449
57843af0
GS		 1450 if (isWARN_ONCE) {
1451 SAVECOPFILE(PL_curcop);
1452 SAVECOPLINE(PL_curcop);
3280af22 1453 gv_check(PL_defstash);
57843af0 1454 }
6224f72b
GS		 1455
1456 LEAVE;
1457 FREETMPS;
1458
1459#ifdef MYMALLOC
1460 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1461 dump_mstats("after compilation:");
1462#endif
1463
1464 ENTER;
3280af22 1465 PL_restartop = 0;
312caa8e 1466 return NULL;
6224f72b
GS		 1467}
1468
954c1994
GS		 1469/*
1470=for apidoc perl_run
1471
1472Tells a Perl interpreter to run. See L<perlembed>.
1473
1474=cut
1475*/
1476
6224f72b 1477int
0cb96387 1478perl_run(pTHXx)
6224f72b 1479{
6224f72b 1480 I32 oldscope;
14dd3ad8 1481 int ret = 0;
db36c5a1 1482 dJMPENV;
cea2e8a9
GS		 1483#ifdef USE_THREADS
1484 dTHX;
1485#endif
6224f72b 1486
3280af22 1487 oldscope = PL_scopestack_ix;
6224f72b 1488
14dd3ad8 1489#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1490 redo_body:
14dd3ad8
GS		 1491 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1492#else
1493 JMPENV_PUSH(ret);
1494#endif
6224f72b
GS		 1495 switch (ret) {
1496 case 1:
1497 cxstack_ix = -1; /* start context stack again */
312caa8e 1498 goto redo_body;
14dd3ad8
GS		 1499 case 0: /* normal completion */
1500#ifndef PERL_FLEXIBLE_EXCEPTIONS
1501 redo_body:
1502 run_body(oldscope);
1503#endif
1504 /* FALL THROUGH */
1505 case 2: /* my_exit() */
3280af22 1506 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1507 LEAVE;
1508 FREETMPS;
3280af22 1509 PL_curstash = PL_defstash;
6224f72b
GS		 1510#ifdef MYMALLOC
1511 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1512 dump_mstats("after execution: ");
1513#endif
14dd3ad8
GS		 1514 ret = STATUS_NATIVE_EXPORT;
1515 break;
6224f72b 1516 case 3:
312caa8e
CS		 1517 if (PL_restartop) {
1518 POPSTACK_TO(PL_mainstack);
1519 goto redo_body;
6224f72b 1520 }
bf49b057 1521 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1522 FREETMPS;
14dd3ad8
GS		 1523 ret = 1;
1524 break;
6224f72b
GS		 1525 }
1526
14dd3ad8
GS		 1527 JMPENV_POP;
1528 return ret;
312caa8e
CS		 1529}
1530
14dd3ad8 1531#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1532STATIC void *
14dd3ad8 1533S_vrun_body(pTHX_ va_list args)
312caa8e 1534{
312caa8e
CS		 1535 I32 oldscope = va_arg(args, I32);
1536
14dd3ad8
GS		 1537 return run_body(oldscope);
1538}
1539#endif
1540
1541
1542STATIC void *
1543S_run_body(pTHX_ I32 oldscope)
1544{
6224f72b 1545 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1546 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1547
3280af22 1548 if (!PL_restartop) {
6224f72b
GS		 1549 DEBUG_x(dump_all());
1550 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1551 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1552 PTR2UV(thr)));
6224f72b 1553
3280af22 1554 if (PL_minus_c) {
bf4acbe4
GS		 1555#ifdef MACOS_TRADITIONAL
1556 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1557#else
bf49b057 1558 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1559#endif
6224f72b
GS		 1560 my_exit(0);
1561 }
3280af22 1562 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1563 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1564 if (PL_initav)
1565 call_list(oldscope, PL_initav);
6224f72b
GS		 1566 }
1567
1568 /* do it */
1569
3280af22 1570 if (PL_restartop) {
533c011a 1571 PL_op = PL_restartop;
3280af22 1572 PL_restartop = 0;
cea2e8a9 1573 CALLRUNOPS(aTHX);
6224f72b 1574 }
3280af22
NIS		 1575 else if (PL_main_start) {
1576 CvDEPTH(PL_main_cv) = 1;
533c011a 1577 PL_op = PL_main_start;
cea2e8a9 1578 CALLRUNOPS(aTHX);
6224f72b
GS		 1579 }
1580
f6b3007c
JH		 1581 my_exit(0);
1582 /* NOTREACHED */
312caa8e 1583 return NULL;
6224f72b
GS		 1584}
1585
954c1994
GS		 1586/*
1587=for apidoc p||get_sv
1588
1589Returns the SV of the specified Perl scalar. If C<create> is set and the
1590Perl variable does not exist then it will be created. If C<create> is not
1591set and the variable does not exist then NULL is returned.
1592
1593=cut
1594*/
1595
6224f72b 1596SV*
864dbfa3 1597Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1598{
1599 GV *gv;
1600#ifdef USE_THREADS
1601 if (name[1] == '\0' && !isALPHA(name[0])) {
1602 PADOFFSET tmp = find_threadsv(name);
411caa50 1603 if (tmp != NOT_IN_PAD)
6224f72b 1604 return THREADSV(tmp);
6224f72b
GS		 1605 }
1606#endif /* USE_THREADS */
1607 gv = gv_fetchpv(name, create, SVt_PV);
1608 if (gv)
1609 return GvSV(gv);
1610 return Nullsv;
1611}
1612
954c1994
GS		 1613/*
1614=for apidoc p||get_av
1615
1616Returns the AV of the specified Perl array. If C<create> is set and the
1617Perl variable does not exist then it will be created. If C<create> is not
1618set and the variable does not exist then NULL is returned.
1619
1620=cut
1621*/
1622
6224f72b 1623AV*
864dbfa3 1624Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1625{
1626 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1627 if (create)
1628 return GvAVn(gv);
1629 if (gv)
1630 return GvAV(gv);
1631 return Nullav;
1632}
1633
954c1994
GS		 1634/*
1635=for apidoc p||get_hv
1636
1637Returns the HV of the specified Perl hash. If C<create> is set and the
1638Perl variable does not exist then it will be created. If C<create> is not
1639set and the variable does not exist then NULL is returned.
1640
1641=cut
1642*/
1643
6224f72b 1644HV*
864dbfa3 1645Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1646{
a0d0e21e
LW		 1647 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1648 if (create)
1649 return GvHVn(gv);
1650 if (gv)
1651 return GvHV(gv);
1652 return Nullhv;
1653}
1654
954c1994
GS		 1655/*
1656=for apidoc p||get_cv
1657
1658Returns the CV of the specified Perl subroutine. If C<create> is set and
1659the Perl subroutine does not exist then it will be declared (which has the
1660same effect as saying C<sub name;>). If C<create> is not set and the
1661subroutine does not exist then NULL is returned.
1662
1663=cut
1664*/
1665
a0d0e21e 1666CV*
864dbfa3 1667Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1668{
1669 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1670 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1671 /* XXX this is probably not what they think they're getting.
1672 * It has the same effect as "sub name;", i.e. just a forward
1673 * declaration! */
8ebc5c01 1674 if (create && !GvCVu(gv))
774d564b 1675 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1676 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1677 Nullop,
a0d0e21e
LW		 1678 Nullop);
1679 if (gv)
8ebc5c01 1680 return GvCVu(gv);
a0d0e21e
LW		 1681 return Nullcv;
1682}
1683
79072805
LW		 1684/* Be sure to refetch the stack pointer after calling these routines. */
1685
954c1994
GS		 1686/*
1687=for apidoc p||call_argv
1688
1689Performs a callback to the specified Perl sub. See L<perlcall>.
1690
1691=cut
1692*/
1693
a0d0e21e 1694I32
864dbfa3 1695Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1696
8ac85365
NIS		 1697 /* See G_* flags in cop.h */
1698 /* null terminated arg list */
8990e307 1699{
a0d0e21e 1700 dSP;
8990e307 1701
924508f0 1702 PUSHMARK(SP);
a0d0e21e 1703 if (argv) {
8990e307 1704 while (*argv) {
a0d0e21e 1705 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1706 argv++;
1707 }
a0d0e21e 1708 PUTBACK;
8990e307 1709 }
864dbfa3 1710 return call_pv(sub_name, flags);
8990e307
LW		 1711}
1712
954c1994
GS		 1713/*
1714=for apidoc p||call_pv
1715
1716Performs a callback to the specified Perl sub. See L<perlcall>.
1717
1718=cut
1719*/
1720
a0d0e21e 1721I32
864dbfa3 1722Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1723 /* name of the subroutine */
1724 /* See G_* flags in cop.h */
a0d0e21e 1725{
864dbfa3 1726 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1727}
1728
954c1994
GS		 1729/*
1730=for apidoc p||call_method
1731
1732Performs a callback to the specified Perl method. The blessed object must
1733be on the stack. See L<perlcall>.
1734
1735=cut
1736*/
1737
a0d0e21e 1738I32
864dbfa3 1739Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1740 /* name of the subroutine */
1741 /* See G_* flags in cop.h */
a0d0e21e 1742{
968b3946 1743 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1744}
1745
1746/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1747/*
1748=for apidoc p||call_sv
1749
1750Performs a callback to the Perl sub whose name is in the SV. See
1751L<perlcall>.
1752
1753=cut
1754*/
1755
a0d0e21e 1756I32
864dbfa3 1757Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1758 /* See G_* flags in cop.h */
a0d0e21e 1759{
924508f0 1760 dSP;
a0d0e21e 1761 LOGOP myop; /* fake syntax tree node */
968b3946 1762 UNOP method_op;
aa689395 1763 I32 oldmark;
13689cfe 1764 volatile I32 retval = 0;
a0d0e21e 1765 I32 oldscope;
54310121 1766 bool oldcatch = CATCH_GET;
6224f72b 1767 int ret;
533c011a 1768 OP* oldop = PL_op;
db36c5a1 1769 dJMPENV;
1e422769 1770
a0d0e21e
LW		 1771 if (flags & G_DISCARD) {
1772 ENTER;
1773 SAVETMPS;
1774 }
1775
aa689395 1776 Zero(&myop, 1, LOGOP);
54310121 1777 myop.op_next = Nullop;
f51d4af5 1778 if (!(flags & G_NOARGS))
aa689395 1779 myop.op_flags |= OPf_STACKED;
54310121 1780 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1781 (flags & G_ARRAY) ? OPf_WANT_LIST :
1782 OPf_WANT_SCALAR);
462e5cf6 1783 SAVEOP();
533c011a 1784 PL_op = (OP*)&myop;
aa689395 1785
3280af22
NIS		 1786 EXTEND(PL_stack_sp, 1);
1787 *++PL_stack_sp = sv;
aa689395 1788 oldmark = TOPMARK;
3280af22 1789 oldscope = PL_scopestack_ix;
a0d0e21e 1790
3280af22 1791 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1792 /* Handle first BEGIN of -d. */
3280af22 1793 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1794 /* Try harder, since this may have been a sighandler, thus
1795 * curstash may be meaningless. */
3280af22 1796 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1797 && !(flags & G_NODEBUG))
533c011a 1798 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1799
968b3946
GS		 1800 if (flags & G_METHOD) {
1801 Zero(&method_op, 1, UNOP);
1802 method_op.op_next = PL_op;
1803 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1804 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1805 PL_op = (OP*)&method_op;
968b3946
GS		 1806 }
1807
312caa8e 1808 if (!(flags & G_EVAL)) {
0cdb2077 1809 CATCH_SET(TRUE);
14dd3ad8 1810 call_body((OP*)&myop, FALSE);
312caa8e 1811 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1812 CATCH_SET(oldcatch);
312caa8e
CS		 1813 }
1814 else {
d78bda3d 1815 myop.op_other = (OP*)&myop;
3280af22 1816 PL_markstack_ptr--;
4633a7c4
LW		 1817 /* we're trying to emulate pp_entertry() here */
1818 {
c09156bb 1819 register PERL_CONTEXT *cx;
54310121 1820 I32 gimme = GIMME_V;
ac27b0f5 1821
4633a7c4
LW		 1822 ENTER;
1823 SAVETMPS;
ac27b0f5 1824
968b3946 1825 push_return(Nullop);
1d76a5c3 1826 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1827 PUSHEVAL(cx, 0, 0);
533c011a 1828 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1829
faef0170 1830 PL_in_eval = EVAL_INEVAL;
4633a7c4 1831 if (flags & G_KEEPERR)
faef0170 1832 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1833 else
38a03e6e 1834 sv_setpv(ERRSV,"");
4633a7c4 1835 }
3280af22 1836 PL_markstack_ptr++;
a0d0e21e 1837
14dd3ad8
GS		 1838#ifdef PERL_FLEXIBLE_EXCEPTIONS
1839 redo_body:
1840 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1841 (OP*)&myop, FALSE);
14dd3ad8
GS		 1842#else
1843 JMPENV_PUSH(ret);
1844#endif
6224f72b
GS		 1845 switch (ret) {
1846 case 0:
14dd3ad8
GS		 1847#ifndef PERL_FLEXIBLE_EXCEPTIONS
1848 redo_body:
1849 call_body((OP*)&myop, FALSE);
1850#endif
312caa8e
CS		 1851 retval = PL_stack_sp - (PL_stack_base + oldmark);
1852 if (!(flags & G_KEEPERR))
1853 sv_setpv(ERRSV,"");
a0d0e21e 1854 break;
6224f72b 1855 case 1:
f86702cc 1856 STATUS_ALL_FAILURE;
a0d0e21e 1857 /* FALL THROUGH */
6224f72b 1858 case 2:
a0d0e21e 1859 /* my_exit() was called */
3280af22 1860 PL_curstash = PL_defstash;
a0d0e21e 1861 FREETMPS;
14dd3ad8 1862 JMPENV_POP;
cc3604b1 1863 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1864 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1865 my_exit_jump();
a0d0e21e 1866 /* NOTREACHED */
6224f72b 1867 case 3:
3280af22 1868 if (PL_restartop) {
533c011a 1869 PL_op = PL_restartop;
3280af22 1870 PL_restartop = 0;
312caa8e 1871 goto redo_body;
a0d0e21e 1872 }
3280af22 1873 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1874 if (flags & G_ARRAY)
1875 retval = 0;
1876 else {
1877 retval = 1;
3280af22 1878 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1879 }
312caa8e 1880 break;
a0d0e21e 1881 }
a0d0e21e 1882
3280af22 1883 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1884 SV **newsp;
1885 PMOP *newpm;
1886 I32 gimme;
c09156bb 1887 register PERL_CONTEXT *cx;
a0a2876f
LW		 1888 I32 optype;
1889
1890 POPBLOCK(cx,newpm);
1891 POPEVAL(cx);
1892 pop_return();
3280af22 1893 PL_curpm = newpm;
a0a2876f 1894 LEAVE;
a0d0e21e 1895 }
14dd3ad8 1896 JMPENV_POP;
a0d0e21e 1897 }
1e422769 1898
a0d0e21e 1899 if (flags & G_DISCARD) {
3280af22 1900 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1901 retval = 0;
1902 FREETMPS;
1903 LEAVE;
1904 }
533c011a 1905 PL_op = oldop;
a0d0e21e
LW		 1906 return retval;
1907}
1908
14dd3ad8 1909#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1910STATIC void *
14dd3ad8 1911S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1912{
1913 OP *myop = va_arg(args, OP*);
1914 int is_eval = va_arg(args, int);
1915
14dd3ad8 1916 call_body(myop, is_eval);
312caa8e
CS		 1917 return NULL;
1918}
14dd3ad8 1919#endif
312caa8e
CS		 1920
1921STATIC void
14dd3ad8 1922S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1923{
312caa8e
CS		 1924 if (PL_op == myop) {
1925 if (is_eval)
f807eda9 1926 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1927 else
f807eda9 1928 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1929 }
1930 if (PL_op)
cea2e8a9 1931 CALLRUNOPS(aTHX);
312caa8e
CS		 1932}
1933
6e72f9df 1934/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1935
954c1994
GS		 1936/*
1937=for apidoc p||eval_sv
1938
1939Tells Perl to C<eval> the string in the SV.
1940
1941=cut
1942*/
1943
a0d0e21e 1944I32
864dbfa3 1945Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1946
8ac85365 1947 /* See G_* flags in cop.h */
a0d0e21e 1948{
924508f0 1949 dSP;
a0d0e21e 1950 UNOP myop; /* fake syntax tree node */
8fa7f367 1951 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1952 volatile I32 retval = 0;
4633a7c4 1953 I32 oldscope;
6224f72b 1954 int ret;
533c011a 1955 OP* oldop = PL_op;
db36c5a1 1956 dJMPENV;
84902520 1957
4633a7c4
LW		 1958 if (flags & G_DISCARD) {
1959 ENTER;
1960 SAVETMPS;
1961 }
1962
462e5cf6 1963 SAVEOP();
533c011a
NIS		 1964 PL_op = (OP*)&myop;
1965 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1966 EXTEND(PL_stack_sp, 1);
1967 *++PL_stack_sp = sv;
1968 oldscope = PL_scopestack_ix;
79072805 1969
4633a7c4
LW		 1970 if (!(flags & G_NOARGS))
1971 myop.op_flags = OPf_STACKED;
79072805 1972 myop.op_next = Nullop;
6e72f9df 1973 myop.op_type = OP_ENTEREVAL;
54310121 1974 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1975 (flags & G_ARRAY) ? OPf_WANT_LIST :
1976 OPf_WANT_SCALAR);
6e72f9df 1977 if (flags & G_KEEPERR)
1978 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1979
14dd3ad8 1980#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1981 redo_body:
14dd3ad8 1982 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1983 (OP*)&myop, TRUE);
14dd3ad8
GS		 1984#else
1985 JMPENV_PUSH(ret);
1986#endif
6224f72b
GS		 1987 switch (ret) {
1988 case 0:
14dd3ad8
GS		 1989#ifndef PERL_FLEXIBLE_EXCEPTIONS
1990 redo_body:
1991 call_body((OP*)&myop,TRUE);
1992#endif
312caa8e
CS		 1993 retval = PL_stack_sp - (PL_stack_base + oldmark);
1994 if (!(flags & G_KEEPERR))
1995 sv_setpv(ERRSV,"");
4633a7c4 1996 break;
6224f72b 1997 case 1:
f86702cc 1998 STATUS_ALL_FAILURE;
4633a7c4 1999 /* FALL THROUGH */
6224f72b 2000 case 2:
4633a7c4 2001 /* my_exit() was called */
3280af22 2002 PL_curstash = PL_defstash;
4633a7c4 2003 FREETMPS;
14dd3ad8 2004 JMPENV_POP;
cc3604b1 2005 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2006 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2007 my_exit_jump();
4633a7c4 2008 /* NOTREACHED */
6224f72b 2009 case 3:
3280af22 2010 if (PL_restartop) {
533c011a 2011 PL_op = PL_restartop;
3280af22 2012 PL_restartop = 0;
312caa8e 2013 goto redo_body;
4633a7c4 2014 }
3280af22 2015 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2016 if (flags & G_ARRAY)
2017 retval = 0;
2018 else {
2019 retval = 1;
3280af22 2020 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2021 }
312caa8e 2022 break;
4633a7c4
LW		 2023 }
2024
14dd3ad8 2025 JMPENV_POP;
4633a7c4 2026 if (flags & G_DISCARD) {
3280af22 2027 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2028 retval = 0;
2029 FREETMPS;
2030 LEAVE;
2031 }
533c011a 2032 PL_op = oldop;
4633a7c4
LW		 2033 return retval;
2034}
2035
954c1994
GS		 2036/*
2037=for apidoc p||eval_pv
2038
2039Tells Perl to C<eval> the given string and return an SV* result.
2040
2041=cut
2042*/
2043
137443ea 2044SV*
864dbfa3 2045Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2046{
2047 dSP;
2048 SV* sv = newSVpv(p, 0);
2049
864dbfa3 2050 eval_sv(sv, G_SCALAR);
137443ea 2051 SvREFCNT_dec(sv);
2052
2053 SPAGAIN;
2054 sv = POPs;
2055 PUTBACK;
2056
2d8e6c8d
GS		 2057 if (croak_on_error && SvTRUE(ERRSV)) {
2058 STRLEN n_a;
cea2e8a9 2059 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2060 }
137443ea 2061
2062 return sv;
2063}
2064
4633a7c4
LW		 2065/* Require a module. */
2066
954c1994
GS		 2067/*
2068=for apidoc p||require_pv
2069
7d3fb230
BS		 2070Tells Perl to C<require> the file named by the string argument. It is
2071analogous to the Perl code C<eval "require '$file'">. It's even
2072implemented that way; consider using Perl_load_module instead.
954c1994 2073
7d3fb230 2074=cut */
954c1994 2075
4633a7c4 2076void
864dbfa3 2077Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2078{
d3acc0f7
JP		 2079 SV* sv;
2080 dSP;
e788e7d3 2081 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2082 PUTBACK;
2083 sv = sv_newmortal();
4633a7c4
LW		 2084 sv_setpv(sv, "require '");
2085 sv_catpv(sv, pv);
2086 sv_catpv(sv, "'");
864dbfa3 2087 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2088 SPAGAIN;
2089 POPSTACK;
79072805
LW		 2090}
2091
79072805 2092void
864dbfa3 2093Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2094{
2095 register GV *gv;
2096
155aba94 2097 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2098 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2099}
2100
76e3520e 2101STATIC void
cea2e8a9 2102S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2103{
ab821d7f 2104 /* This message really ought to be max 23 lines.
75c72d73 2105 * Removed -h because the user already knows that option. Others? */
fb73857a 2106
76e3520e 2107 static char *usage_msg[] = {
fb73857a 2108"-0[octal] specify record separator (\\0, if no argument)",
2109"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2110"-C enable native wide character system interfaces",
1950ee41 2111"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2112"-d[:debugger] run program under debugger",
2113"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2114"-e 'command' one line of program (several -e's allowed, omit programfile)",
2115"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2116"-i[extension] edit <> files in place (makes backup if extension supplied)",
2117"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2118"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2119"-[mM][-]module execute `use/no module...' before executing program",
2120"-n assume 'while (<>) { ... }' loop around program",
2121"-p assume loop like -n but print line also, like sed",
2122"-P run program through C preprocessor before compilation",
2123"-s enable rudimentary parsing for switches after programfile",
2124"-S look for programfile using PATH environment variable",
2125"-T enable tainting checks",
2126"-u dump core after parsing program",
fb73857a 2127"-U allow unsafe operations",
aac3bd0d
GS		 2128"-v print version, subversion (includes VERY IMPORTANT perl info)",
2129"-V[:variable] print configuration summary (or a single Config.pm variable)",
2130"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2131"-W enable all warnings",
2132"-X disable all warnings",
fb73857a 2133"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2134"\n",
2135NULL
2136};
76e3520e 2137 char **p = usage_msg;
fb73857a 2138
b0e47665
GS		 2139 PerlIO_printf(PerlIO_stdout(),
2140 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2141 name);
fb73857a 2142 while (*p)
b0e47665 2143 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2144}
2145
79072805
LW		 2146/* This routine handles any switches that can be given during run */
2147
2148char *
864dbfa3 2149Perl_moreswitches(pTHX_ char *s)
79072805 2150{
ba210ebe 2151 STRLEN numlen;
c07a80fd 2152 U32 rschar;
79072805
LW		 2153
2154 switch (*s) {
2155 case '0':
a863c7d1 2156 {
b21ed0a9 2157 numlen = 0; /* disallow underscores */
dff6d3cd 2158 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2159 SvREFCNT_dec(PL_nrs);
c07a80fd 2160 if (rschar & ~((U8)~0))
3280af22 2161 PL_nrs = &PL_sv_undef;
c07a80fd 2162 else if (!rschar && numlen >= 2)
79cb57f6 2163 PL_nrs = newSVpvn("", 0);
c07a80fd 2164 else {
2165 char ch = rschar;
79cb57f6 2166 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2167 }
2168 return s + numlen;
a863c7d1 2169 }
46487f74
GS		 2170 case 'C':
2171 PL_widesyscalls = TRUE;
2172 s++;
2173 return s;
2304df62 2174 case 'F':
3280af22
NIS		 2175 PL_minus_F = TRUE;
2176 PL_splitstr = savepv(s + 1);
2304df62
AD		 2177 s += strlen(s);
2178 return s;
79072805 2179 case 'a':
3280af22 2180 PL_minus_a = TRUE;
79072805
LW		 2181 s++;
2182 return s;
2183 case 'c':
3280af22 2184 PL_minus_c = TRUE;
79072805
LW		 2185 s++;
2186 return s;
2187 case 'd':
bbce6d69 2188 forbid_setid("-d");
4633a7c4 2189 s++;
70c94a19
RR		 2190 /* The following permits -d:Mod to accepts arguments following an =
2191 in the fashion that -MSome::Mod does. */
2192 if (*s == ':' || *s == '=') {
2193 char *start;
2194 SV *sv;
2195 sv = newSVpv("use Devel::", 0);
2196 start = ++s;
2197 /* We now allow -d:Module=Foo,Bar */
2198 while(isALNUM(*s) || *s==':') ++s;
2199 if (*s != '=')
2200 sv_catpv(sv, start);
2201 else {
2202 sv_catpvn(sv, start, s-start);
2203 sv_catpv(sv, " split(/,/,q{");
2204 sv_catpv(sv, ++s);
2205 sv_catpv(sv, "})");
2206 }
4633a7c4 2207 s += strlen(s);
70c94a19 2208 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2209 }
ed094faf 2210 if (!PL_perldb) {
3280af22 2211 PL_perldb = PERLDB_ALL;
a0d0e21e 2212 init_debugger();
ed094faf 2213 }
79072805
LW		 2214 return s;
2215 case 'D':
0453d815 2216 {
79072805 2217#ifdef DEBUGGING
bbce6d69 2218 forbid_setid("-D");
79072805 2219 if (isALPHA(s[1])) {
04932ac8
DM		 2220 /* if adding extra options, remember to update DEBUG_MASK */
2221 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2222 char *d;
2223
93a17b20 2224 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2225 PL_debug |= 1 << (d - debopts);
79072805
LW		 2226 }
2227 else {
3280af22 2228 PL_debug = atoi(s+1);
79072805
LW		 2229 for (s++; isDIGIT(*s); s++) ;
2230 }
aea4f609 2231 PL_debug |= DEBUG_TOP_FLAG;
79072805 2232#else
0453d815
PM		 2233 if (ckWARN_d(WARN_DEBUGGING))
2234 Perl_warner(aTHX_ WARN_DEBUGGING,
2235 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2236 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2237#endif
2238 /*SUPPRESS 530*/
2239 return s;
0453d815 2240 }
4633a7c4 2241 case 'h':
ac27b0f5 2242 usage(PL_origargv[0]);
6ad3d225 2243 PerlProc_exit(0);
79072805 2244 case 'i':
3280af22
NIS		 2245 if (PL_inplace)
2246 Safefree(PL_inplace);
2247 PL_inplace = savepv(s+1);
79072805 2248 /*SUPPRESS 530*/
3280af22 2249 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2250 if (*s) {
fb73857a 2251 *s++ = '\0';
7b8d334a
GS		 2252 if (*s == '-') /* Additional switches on #! line. */
2253 s++;
2254 }
fb73857a 2255 return s;
2256 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2257 forbid_setid("-I");
fb73857a 2258 ++s;
2259 while (*s && isSPACE(*s))
2260 ++s;
2261 if (*s) {
774d564b 2262 char *e, *p;
0df16ed7
GS		 2263 p = s;
2264 /* ignore trailing spaces (possibly followed by other switches) */
2265 do {
2266 for (e = p; *e && !isSPACE(*e); e++) ;
2267 p = e;
2268 while (isSPACE(*p))
2269 p++;
2270 } while (*p && *p != '-');
2271 e = savepvn(s, e-s);
9c8a64f0 2272 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2273 Safefree(e);
2274 s = p;
2275 if (*s == '-')
2276 s++;
79072805
LW		 2277 }
2278 else
a67e862a 2279 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2280 return s;
79072805 2281 case 'l':
3280af22 2282 PL_minus_l = TRUE;
79072805 2283 s++;
7889fe52
NIS		 2284 if (PL_ors_sv) {
2285 SvREFCNT_dec(PL_ors_sv);
2286 PL_ors_sv = Nullsv;
2287 }
79072805 2288 if (isDIGIT(*s)) {
7889fe52 2289 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2290 numlen = 0; /* disallow underscores */
7889fe52 2291 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2292 s += numlen;
2293 }
2294 else {
3280af22 2295 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2296 PL_ors_sv = newSVpvn("\n\n",2);
2297 }
2298 else {
2299 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2300 }
79072805
LW		 2301 }
2302 return s;
1a30305b 2303 case 'M':
bbce6d69 2304 forbid_setid("-M"); /* XXX ? */
1a30305b 2305 /* FALL THROUGH */
2306 case 'm':
bbce6d69 2307 forbid_setid("-m"); /* XXX ? */
1a30305b 2308 if (*++s) {
a5f75d66 2309 char *start;
11343788 2310 SV *sv;
a5f75d66
AD		 2311 char *use = "use ";
2312 /* -M-foo == 'no foo' */
2313 if (*s == '-') { use = "no "; ++s; }
11343788 2314 sv = newSVpv(use,0);
a5f75d66 2315 start = s;
1a30305b 2316 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2317 while(isALNUM(*s) || *s==':') ++s;
2318 if (*s != '=') {
11343788 2319 sv_catpv(sv, start);
c07a80fd 2320 if (*(start-1) == 'm') {
2321 if (*s != '\0')
cea2e8a9 2322 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2323 sv_catpv( sv, " ()");
c07a80fd 2324 }
2325 } else {
6df41af2 2326 if (s == start)
be98fb35
GS		 2327 Perl_croak(aTHX_ "Module name required with -%c option",
2328 s[-1]);
11343788
MB		 2329 sv_catpvn(sv, start, s-start);
2330 sv_catpv(sv, " split(/,/,q{");
2331 sv_catpv(sv, ++s);
2332 sv_catpv(sv, "})");
c07a80fd 2333 }
1a30305b 2334 s += strlen(s);
5c831c24 2335 if (!PL_preambleav)
3280af22
NIS		 2336 PL_preambleav = newAV();
2337 av_push(PL_preambleav, sv);
1a30305b 2338 }
2339 else
cea2e8a9 2340 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2341 return s;
79072805 2342 case 'n':
3280af22 2343 PL_minus_n = TRUE;
79072805
LW		 2344 s++;
2345 return s;
2346 case 'p':
3280af22 2347 PL_minus_p = TRUE;
79072805
LW		 2348 s++;
2349 return s;
2350 case 's':
bbce6d69 2351 forbid_setid("-s");
3280af22 2352 PL_doswitches = TRUE;
79072805
LW		 2353 s++;
2354 return s;
463ee0b2 2355 case 'T':
3280af22 2356 if (!PL_tainting)
cea2e8a9 2357 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2358 s++;
2359 return s;
79072805 2360 case 'u':
bf4acbe4
GS		 2361#ifdef MACOS_TRADITIONAL
2362 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2363#endif
3280af22 2364 PL_do_undump = TRUE;
79072805
LW		 2365 s++;
2366 return s;
2367 case 'U':
3280af22 2368 PL_unsafe = TRUE;
79072805
LW		 2369 s++;
2370 return s;
2371 case 'v':
8e9464f1 2372#if !defined(DGUX)
b0e47665 2373 PerlIO_printf(PerlIO_stdout(),
d2560b70 2374 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2375 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2376#else /* DGUX */
2377/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2378 PerlIO_printf(PerlIO_stdout(),
2379 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2380 PerlIO_printf(PerlIO_stdout(),
2381 Perl_form(aTHX_ " built under %s at %s %s\n",
2382 OSNAME, __DATE__, __TIME__));
2383 PerlIO_printf(PerlIO_stdout(),
2384 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2385 OSVERS));
8e9464f1
JH		 2386#endif /* !DGUX */
2387
fb73857a 2388#if defined(LOCAL_PATCH_COUNT)
2389 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2390 PerlIO_printf(PerlIO_stdout(),
2391 "\n(with %d registered patch%s, "
2392 "see perl -V for more detail)",
2393 (int)LOCAL_PATCH_COUNT,
2394 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2395#endif
1a30305b 2396
b0e47665 2397 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2398 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2399#ifdef MACOS_TRADITIONAL
2400 PerlIO_printf(PerlIO_stdout(),
084592ab 2401 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2402#endif
79072805 2403#ifdef MSDOS
b0e47665
GS		 2404 PerlIO_printf(PerlIO_stdout(),
2405 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2406#endif
2407#ifdef DJGPP
b0e47665
GS		 2408 PerlIO_printf(PerlIO_stdout(),
2409 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2410 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2411#endif
79072805 2412#ifdef OS2
b0e47665
GS		 2413 PerlIO_printf(PerlIO_stdout(),
2414 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2415 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2416#endif
79072805 2417#ifdef atarist
b0e47665
GS		 2418 PerlIO_printf(PerlIO_stdout(),
2419 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2420#endif
a3f9223b 2421#ifdef __BEOS__
b0e47665
GS		 2422 PerlIO_printf(PerlIO_stdout(),
2423 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2424#endif
1d84e8df 2425#ifdef MPE
b0e47665 2426 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2427 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2428#endif
9d116dd7 2429#ifdef OEMVS
b0e47665
GS		 2430 PerlIO_printf(PerlIO_stdout(),
2431 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2432#endif
495c5fdc 2433#ifdef __VOS__
b0e47665
GS		 2434 PerlIO_printf(PerlIO_stdout(),
2435 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2436#endif
092bebab 2437#ifdef __OPEN_VM
b0e47665
GS		 2438 PerlIO_printf(PerlIO_stdout(),
2439 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2440#endif
a1a0e61e 2441#ifdef POSIX_BC
b0e47665
GS		 2442 PerlIO_printf(PerlIO_stdout(),
2443 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2444#endif
61ae2fbf 2445#ifdef __MINT__
b0e47665
GS		 2446 PerlIO_printf(PerlIO_stdout(),
2447 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2448#endif
f83d2536 2449#ifdef EPOC
b0e47665
GS		 2450 PerlIO_printf(PerlIO_stdout(),
2451 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2452#endif
e1caacb4
JH		 2453#ifdef UNDER_CE
2454 printf("WINCE port by Rainer Keuchel, 2001\n");
2455 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2456 wce_hitreturn();
2457#endif
baed7233
DL		 2458#ifdef BINARY_BUILD_NOTICE
2459 BINARY_BUILD_NOTICE;
2460#endif
b0e47665
GS		 2461 PerlIO_printf(PerlIO_stdout(),
2462 "\n\
79072805 2463Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2464GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2465Complete documentation for Perl, including FAQ lists, should be found on\n\
2466this system using `man perl' or `perldoc perl'. If you have access to the\n\
2467Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2468 PerlProc_exit(0);
79072805 2469 case 'w':
599cee73 2470 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2471 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2472 s++;
2473 return s;
2474 case 'W':
ac27b0f5 2475 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2476 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2477 s++;
2478 return s;
2479 case 'X':
ac27b0f5 2480 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2481 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2482 s++;
2483 return s;
a0d0e21e 2484 case '*':
79072805
LW		 2485 case ' ':
2486 if (s[1] == '-') /* Additional switches on #! line. */
2487 return s+2;
2488 break;
a0d0e21e 2489 case '-':
79072805 2490 case 0:
51882d45 2491#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2492 case '\r':
2493#endif
79072805
LW		 2494 case '\n':
2495 case '\t':
2496 break;
aa689395 2497#ifdef ALTERNATE_SHEBANG
2498 case 'S': /* OS/2 needs -S on "extproc" line. */
2499 break;
2500#endif
a0d0e21e 2501 case 'P':
3280af22 2502 if (PL_preprocess)
a0d0e21e
LW		 2503 return s+1;
2504 /* FALL THROUGH */
79072805 2505 default:
cea2e8a9 2506 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2507 }
2508 return Nullch;
2509}
2510
2511/* compliments of Tom Christiansen */
2512
2513/* unexec() can be found in the Gnu emacs distribution */
ee580363 2514/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2515
2516void
864dbfa3 2517Perl_my_unexec(pTHX)
79072805
LW		 2518{
2519#ifdef UNEXEC
46fc3d4c 2520 SV* prog;
2521 SV* file;
ee580363 2522 int status = 1;
79072805
LW		 2523 extern int etext;
2524
ee580363 2525 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2526 sv_catpv(prog, "/perl");
6b88bc9c 2527 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2528 sv_catpv(file, ".perldump");
79072805 2529
ee580363
GS		 2530 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2531 /* unexec prints msg to stderr in case of failure */
6ad3d225 2532 PerlProc_exit(status);
79072805 2533#else
a5f75d66
AD		 2534# ifdef VMS
2535# include <lib$routines.h>
2536 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2537# else
79072805 2538 ABORT(); /* for use with undump */
aa689395 2539# endif
a5f75d66 2540#endif
79072805
LW		 2541}
2542
cb68f92d
GS		 2543/* initialize curinterp */
2544STATIC void
cea2e8a9 2545S_init_interp(pTHX)
cb68f92d
GS		 2546{
2547
066ef5b5 2548#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2549#define I_REINIT \
6b88bc9c
GS		 2550 STMT_START { \
2551 PL_chopset = " \n-"; \
2552 PL_copline = NOLINE; \
2553 PL_curcop = &PL_compiling;\
2554 PL_curcopdb = NULL; \
2555 PL_dbargs = 0; \
3967c732 2556 PL_dumpindent = 4; \
6b88bc9c
GS		 2557 PL_laststatval = -1; \
2558 PL_laststype = OP_STAT; \
2559 PL_maxscream = -1; \
2560 PL_maxsysfd = MAXSYSFD; \
2561 PL_statname = Nullsv; \
2562 PL_tmps_floor = -1; \
2563 PL_tmps_ix = -1; \
2564 PL_op_mask = NULL; \
6b88bc9c
GS		 2565 PL_laststatval = -1; \
2566 PL_laststype = OP_STAT; \
2567 PL_mess_sv = Nullsv; \
2568 PL_splitstr = " "; \
2569 PL_generation = 100; \
2570 PL_exitlist = NULL; \
2571 PL_exitlistlen = 0; \
2572 PL_regindent = 0; \
2573 PL_in_clean_objs = FALSE; \
2574 PL_in_clean_all = FALSE; \
2575 PL_profiledata = NULL; \
2576 PL_rsfp = Nullfp; \
2577 PL_rsfp_filters = Nullav; \
24d3c518 2578 PL_dirty = FALSE; \
cb68f92d 2579 } STMT_END
9666903d 2580 I_REINIT;
066ef5b5
GS		 2581#else
2582# ifdef MULTIPLICITY
2583# define PERLVAR(var,type)
51371543 2584# define PERLVARA(var,n,type)
cea2e8a9 2585# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2586# if defined(USE_THREADS)
2587# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2588# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2589# else /* !USE_THREADS */
2590# define PERLVARI(var,type,init) aTHX->var = init;
2591# define PERLVARIC(var,type,init) aTHX->var = init;
2592# endif /* USE_THREADS */
cea2e8a9 2593# else
c5be433b
GS		 2594# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2595# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2596# endif
066ef5b5
GS		 2597# include "intrpvar.h"
2598# ifndef USE_THREADS
2599# include "thrdvar.h"
2600# endif
2601# undef PERLVAR
51371543 2602# undef PERLVARA
066ef5b5
GS		 2603# undef PERLVARI
2604# undef PERLVARIC
3967c732 2605# else
066ef5b5 2606# define PERLVAR(var,type)
51371543 2607# define PERLVARA(var,n,type)
533c011a
NIS		 2608# define PERLVARI(var,type,init) PL_##var = init;
2609# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2610# include "intrpvar.h"
2611# ifndef USE_THREADS
2612# include "thrdvar.h"
2613# endif
2614# undef PERLVAR
51371543 2615# undef PERLVARA
066ef5b5
GS		 2616# undef PERLVARI
2617# undef PERLVARIC
2618# endif
cb68f92d
GS		 2619#endif
2620
cb68f92d
GS		 2621}
2622
76e3520e 2623STATIC void
cea2e8a9 2624S_init_main_stash(pTHX)
79072805 2625{
463ee0b2 2626 GV *gv;
6e72f9df 2627
2628 /* Note that strtab is a rather special HV. Assumptions are made
2629 about not iterating on it, and not adding tie magic to it.
2630 It is properly deallocated in perl_destruct() */
3280af22 2631 PL_strtab = newHV();
5f08fbcd
GS		 2632#ifdef USE_THREADS
2633 MUTEX_INIT(&PL_strtab_mutex);
2634#endif
3280af22
NIS		 2635 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2636 hv_ksplit(PL_strtab, 512);
ac27b0f5 2637
3280af22 2638 PL_curstash = PL_defstash = newHV();
79cb57f6 2639 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2640 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2641 SvREFCNT_dec(GvHV(gv));
3280af22 2642 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2643 SvREADONLY_on(gv);
3280af22
NIS		 2644 HvNAME(PL_defstash) = savepv("main");
2645 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2646 GvMULTI_on(PL_incgv);
2647 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2648 GvMULTI_on(PL_hintgv);
2649 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2650 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2651 GvMULTI_on(PL_errgv);
2652 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2653 GvMULTI_on(PL_replgv);
cea2e8a9 2654 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2655 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2656 sv_setpvn(ERRSV, "", 0);
3280af22 2657 PL_curstash = PL_defstash;
11faa288 2658 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2659 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2660 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2661 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2662 /* We must init $/ before switches are processed. */
864dbfa3 2663 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2664}
2665
76e3520e 2666STATIC void
cea2e8a9 2667S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2668{
6c4ab083 2669 *fdscript = -1;
79072805 2670
3280af22
NIS		 2671 if (PL_e_script) {
2672 PL_origfilename = savepv("-e");
96436eeb 2673 }
6c4ab083
GS		 2674 else {
2675 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2676 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2677
2678 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2679 char *s = scriptname + 8;
2680 *fdscript = atoi(s);
2681 while (isDIGIT(*s))
2682 s++;
2683 if (*s) {
2684 scriptname = savepv(s + 1);
3280af22
NIS		 2685 Safefree(PL_origfilename);
2686 PL_origfilename = scriptname;
6c4ab083
GS		 2687 }
2688 }
2689 }
2690
f4dd75d9
GS		 2691#ifdef USE_ITHREADS
2692 Safefree(CopFILE(PL_curcop));
2693#else
2694 SvREFCNT_dec(CopFILEGV(PL_curcop));
2695#endif
57843af0 2696 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2697 if (strEQ(PL_origfilename,"-"))
79072805 2698 scriptname = "";
01f988be 2699 if (*fdscript >= 0) {
3280af22 2700 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2701#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2702 if (PL_rsfp)
2703 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2704#endif
2705 }
3280af22 2706 else if (PL_preprocess) {
46fc3d4c 2707 char *cpp_cfg = CPPSTDIN;
79cb57f6 2708 SV *cpp = newSVpvn("",0);
46fc3d4c 2709 SV *cmd = NEWSV(0,0);
2710
2711 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2712 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2713 sv_catpv(cpp, cpp_cfg);
79072805 2714
0df16ed7 2715 sv_catpvn(sv, "-I", 2);
fed7345c 2716 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2717
14953ddc
MB		 2718 DEBUG_P(PerlIO_printf(Perl_debug_log,
2719 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2720 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2721#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2722 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2723sed %s -e \"/^[^#]/b\" \
2724 -e \"/^#[ ]*include[ ]/b\" \
2725 -e \"/^#[ ]*define[ ]/b\" \
2726 -e \"/^#[ ]*if[ ]/b\" \
2727 -e \"/^#[ ]*ifdef[ ]/b\" \
2728 -e \"/^#[ ]*ifndef[ ]/b\" \
2729 -e \"/^#[ ]*else/b\" \
2730 -e \"/^#[ ]*elif[ ]/b\" \
2731 -e \"/^#[ ]*undef[ ]/b\" \
2732 -e \"/^#[ ]*endif/b\" \
2733 -e \"s/^#.*//\" \
894356b3 2734 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2735 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2736#else
092bebab 2737# ifdef __OPEN_VM
cea2e8a9 2738 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2739%s %s -e '/^[^#]/b' \
2740 -e '/^#[ ]*include[ ]/b' \
2741 -e '/^#[ ]*define[ ]/b' \
2742 -e '/^#[ ]*if[ ]/b' \
2743 -e '/^#[ ]*ifdef[ ]/b' \
2744 -e '/^#[ ]*ifndef[ ]/b' \
2745 -e '/^#[ ]*else/b' \
2746 -e '/^#[ ]*elif[ ]/b' \
2747 -e '/^#[ ]*undef[ ]/b' \
2748 -e '/^#[ ]*endif/b' \
2749 -e 's/^[ ]*#.*//' \
894356b3 2750 %s | %"SVf" %"SVf" %s",
092bebab 2751# else
cea2e8a9 2752 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2753%s %s -e '/^[^#]/b' \
2754 -e '/^#[ ]*include[ ]/b' \
2755 -e '/^#[ ]*define[ ]/b' \
2756 -e '/^#[ ]*if[ ]/b' \
2757 -e '/^#[ ]*ifdef[ ]/b' \
2758 -e '/^#[ ]*ifndef[ ]/b' \
2759 -e '/^#[ ]*else/b' \
2760 -e '/^#[ ]*elif[ ]/b' \
2761 -e '/^#[ ]*undef[ ]/b' \
2762 -e '/^#[ ]*endif/b' \
2763 -e 's/^[ ]*#.*//' \
894356b3 2764 %s | %"SVf" -C %"SVf" %s",
092bebab 2765# endif
79072805
LW		 2766#ifdef LOC_SED
2767 LOC_SED,
2768#else
2769 "sed",
2770#endif
3280af22 2771 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2772#endif
46fc3d4c 2773 scriptname, cpp, sv, CPPMINUS);
3280af22 2774 PL_doextract = FALSE;
79072805 2775#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2776 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2777#ifdef HAS_SETEUID
b28d0864 2778 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2779#else
2780#ifdef HAS_SETREUID
b28d0864 2781 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2782#else
2783#ifdef HAS_SETRESUID
b28d0864 2784 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2785#else
b28d0864 2786 PerlProc_setuid(PL_uid);
79072805
LW		 2787#endif
2788#endif
85e6fe83 2789#endif
b28d0864 2790 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2791 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2792 }
2793#endif /* IAMSUID */
3280af22 2794 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2795 SvREFCNT_dec(cmd);
2796 SvREFCNT_dec(cpp);
79072805
LW		 2797 }
2798 else if (!*scriptname) {
bbce6d69 2799 forbid_setid("program input from stdin");
3280af22 2800 PL_rsfp = PerlIO_stdin();
79072805 2801 }
96436eeb 2802 else {
3280af22 2803 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2804#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2805 if (PL_rsfp)
2806 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2807#endif
2808 }
3280af22 2809 if (!PL_rsfp) {
13281fa4 2810#ifdef DOSUID
a687059c 2811#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2812 if (PL_euid &&
cc49e20b 2813 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2814 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2815 {
46fc3d4c 2816 /* try again */
a7cb1f99 2817 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2818 (int)PERL_REVISION, (int)PERL_VERSION,
2819 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2820 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2821 }
2822#endif
2823#endif
584d69ec
JH		 2824#ifdef IAMSUID
2825 errno = EPERM;
2826 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2827 Strerror(errno));
2828#else
cea2e8a9 2829 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2830 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2831#endif
13281fa4 2832 }
79072805 2833}
8d063cd8 2834
7b89560d
JH		 2835/* Mention
2836 * I_SYSSTATVFS HAS_FSTATVFS
2837 * I_SYSMOUNT
c890dc6c 2838 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2839 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2840 * here so that metaconfig picks them up. */
2841
104d25b7 2842#ifdef IAMSUID
864dbfa3 2843STATIC int
e688b231 2844S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2845{
0545a864
JH		 2846 int check_okay = 0; /* able to do all the required sys/libcalls */
2847 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2848/*
ad27e871 2849 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2850 * fstatvfs() is UNIX98.
0545a864 2851 * fstatfs() is 4.3 BSD.
ad27e871 2852 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2853 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2854 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2855 */
2856
6439433f
JH		 2857#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2858
2859# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2860 defined(HAS_FSTATVFS)
2861# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2862 struct statvfs stfs;
6439433f 2863
104d25b7
JH		 2864 check_okay = fstatvfs(fd, &stfs) == 0;
2865 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2866# endif /* fstatvfs */
ac27b0f5 2867
6439433f
JH		 2868# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2869 defined(PERL_MOUNT_NOSUID) && \
2870 defined(HAS_FSTATFS) && \
2871 defined(HAS_STRUCT_STATFS) && \
2872 defined(HAS_STRUCT_STATFS_F_FLAGS)
2873# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2874 struct statfs stfs;
6439433f 2875
104d25b7 2876 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2877 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2878# endif /* fstatfs */
2879
2880# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2881 defined(PERL_MOUNT_NOSUID) && \
2882 defined(HAS_FSTAT) && \
2883 defined(HAS_USTAT) && \
2884 defined(HAS_GETMNT) && \
2885 defined(HAS_STRUCT_FS_DATA) && \
2886 defined(NOSTAT_ONE)
2887# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2888 struct stat fdst;
6439433f 2889
0545a864 2890 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2891 struct ustat us;
2892 if (ustat(fdst.st_dev, &us) == 0) {
2893 struct fs_data fsd;
2894 /* NOSTAT_ONE here because we're not examining fields which
2895 * vary between that case and STAT_ONE. */
ad27e871 2896 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2897 size_t cmplen = sizeof(us.f_fname);
2898 if (sizeof(fsd.fd_req.path) < cmplen)
2899 cmplen = sizeof(fsd.fd_req.path);
2900 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2901 fdst.st_dev == fsd.fd_req.dev) {
2902 check_okay = 1;
2903 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2904 }
2905 }
2906 }
2907 }
0545a864 2908 }
6439433f
JH		 2909# endif /* fstat+ustat+getmnt */
2910
2911# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2912 defined(HAS_GETMNTENT) && \
2913 defined(HAS_HASMNTOPT) && \
2914 defined(MNTOPT_NOSUID)
2915# define FD_ON_NOSUID_CHECK_OKAY
2916 FILE *mtab = fopen("/etc/mtab", "r");
2917 struct mntent *entry;
2918 struct stat stb, fsb;
104d25b7
JH		 2919
2920 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2921 while (entry = getmntent(mtab)) {
2922 if (stat(entry->mnt_dir, &fsb) == 0
2923 && fsb.st_dev == stb.st_dev)
2924 {
2925 /* found the filesystem */
2926 check_okay = 1;
2927 if (hasmntopt(entry, MNTOPT_NOSUID))
2928 on_nosuid = 1;
2929 break;
2930 } /* A single fs may well fail its stat(). */
2931 }
104d25b7
JH		 2932 }
2933 if (mtab)
6439433f
JH		 2934 fclose(mtab);
2935# endif /* getmntent+hasmntopt */
0545a864 2936
ac27b0f5 2937 if (!check_okay)
0545a864 2938 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2939 return on_nosuid;
2940}
2941#endif /* IAMSUID */
2942
76e3520e 2943STATIC void
cea2e8a9 2944S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2945{
155aba94 2946#ifdef IAMSUID
96436eeb 2947 int which;
155aba94 2948#endif
96436eeb 2949
13281fa4
LW		 2950 /* do we need to emulate setuid on scripts? */
2951
2952 /* This code is for those BSD systems that have setuid #! scripts disabled
2953 * in the kernel because of a security problem. Merely defining DOSUID
2954 * in perl will not fix that problem, but if you have disabled setuid
2955 * scripts in the kernel, this will attempt to emulate setuid and setgid
2956 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2957 * root version must be called suidperl or sperlN.NNN. If regular perl
2958 * discovers that it has opened a setuid script, it calls suidperl with
2959 * the same argv that it had. If suidperl finds that the script it has
2960 * just opened is NOT setuid root, it sets the effective uid back to the
2961 * uid. We don't just make perl setuid root because that loses the
2962 * effective uid we had before invoking perl, if it was different from the
2963 * uid.
13281fa4
LW		 2964 *
2965 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2966 * be defined in suidperl only. suidperl must be setuid root. The
2967 * Configure script will set this up for you if you want it.
2968 */
a687059c 2969
13281fa4 2970#ifdef DOSUID
6e72f9df 2971 char *s, *s2;
a0d0e21e 2972
b28d0864 2973 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2974 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2975 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2976 I32 len;
2d8e6c8d 2977 STRLEN n_a;
13281fa4 2978
a687059c 2979#ifdef IAMSUID
fe14fcc3 2980#ifndef HAS_SETREUID
a687059c
LW		 2981 /* On this access check to make sure the directories are readable,
2982 * there is actually a small window that the user could use to make
2983 * filename point to an accessible directory. So there is a faint
2984 * chance that someone could execute a setuid script down in a
2985 * non-accessible directory. I don't know what to do about that.
2986 * But I don't think it's too important. The manual lies when
2987 * it says access() is useful in setuid programs.
2988 */
cc49e20b 2989 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2990 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2991#else
2992 /* If we can swap euid and uid, then we can determine access rights
2993 * with a simple stat of the file, and then compare device and
2994 * inode to make sure we did stat() on the same file we opened.
2995 * Then we just have to make sure he or she can execute it.
2996 */
2997 {
2998 struct stat tmpstatbuf;
2999
85e6fe83
LW		 3000 if (
3001#ifdef HAS_SETREUID
b28d0864 3002 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3003#else
3004# if HAS_SETRESUID
b28d0864 3005 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3006# endif
85e6fe83 3007#endif
b28d0864 3008 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3009 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3010 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3011 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3012#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3013 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3014 Perl_croak(aTHX_ "Permission denied");
104d25b7 3015#endif
b28d0864
NIS		 3016 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3017 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3018 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3019 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3020 }
85e6fe83
LW		 3021 if (
3022#ifdef HAS_SETREUID
b28d0864 3023 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3024#else
3025# if defined(HAS_SETRESUID)
b28d0864 3026 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3027# endif
85e6fe83 3028#endif
b28d0864 3029 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3030 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3031 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3032 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3033 }
fe14fcc3 3034#endif /* HAS_SETREUID */
a687059c
LW		 3035#endif /* IAMSUID */
3036
b28d0864 3037 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3038 Perl_croak(aTHX_ "Permission denied");
b28d0864 3039 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3040 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3041 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3042 CopLINE_inc(PL_curcop);
6b88bc9c 3043 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3044 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3045 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3046 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3047 if (*s == ' ') s++;
45d8adaa 3048 while (!isSPACE(*s)) s++;
2d8e6c8d 3049 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3050 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3051 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3052 Perl_croak(aTHX_ "Not a perl script");
a687059c 3053 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3054 /*
3055 * #! arg must be what we saw above. They can invoke it by
3056 * mentioning suidperl explicitly, but they may not add any strange
3057 * arguments beyond what #! says if they do invoke suidperl that way.
3058 */
3059 len = strlen(validarg);
3060 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3061 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3062 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3063
3064#ifndef IAMSUID
b28d0864
NIS		 3065 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3066 PL_euid == PL_statbuf.st_uid)
3067 if (!PL_do_undump)
cea2e8a9 3068 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3069FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3070#endif /* IAMSUID */
13281fa4 3071
b28d0864
NIS		 3072 if (PL_euid) { /* oops, we're not the setuid root perl */
3073 (void)PerlIO_close(PL_rsfp);
13281fa4 3074#ifndef IAMSUID
46fc3d4c 3075 /* try again */
a7cb1f99 3076 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3077 (int)PERL_REVISION, (int)PERL_VERSION,
3078 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3079#endif
cea2e8a9 3080 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3081 }
3082
b28d0864 3083 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3084#ifdef HAS_SETEGID
b28d0864 3085 (void)setegid(PL_statbuf.st_gid);
a687059c 3086#else
fe14fcc3 3087#ifdef HAS_SETREGID
b28d0864 3088 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3089#else
3090#ifdef HAS_SETRESGID
b28d0864 3091 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3092#else
b28d0864 3093 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3094#endif
3095#endif
85e6fe83 3096#endif
b28d0864 3097 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3098 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3099 }
b28d0864
NIS		 3100 if (PL_statbuf.st_mode & S_ISUID) {
3101 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3102#ifdef HAS_SETEUID
b28d0864 3103 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3104#else
fe14fcc3 3105#ifdef HAS_SETREUID
b28d0864 3106 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3107#else
3108#ifdef HAS_SETRESUID
b28d0864 3109 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3110#else
b28d0864 3111 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3112#endif
3113#endif
85e6fe83 3114#endif
b28d0864 3115 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3116 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3117 }
b28d0864 3118 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3119#ifdef HAS_SETEUID
b28d0864 3120 (void)seteuid((Uid_t)PL_uid);
a687059c 3121#else
fe14fcc3 3122#ifdef HAS_SETREUID
b28d0864 3123 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3124#else
85e6fe83 3125#ifdef HAS_SETRESUID
b28d0864 3126 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3127#else
b28d0864 3128 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3129#endif
a687059c
LW		 3130#endif
3131#endif
b28d0864 3132 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3133 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3134 }
748a9306 3135 init_ids();
b28d0864 3136 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3137 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3138 }
3139#ifdef IAMSUID
6b88bc9c 3140 else if (PL_preprocess)
cea2e8a9 3141 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3142 else if (fdscript >= 0)
cea2e8a9 3143 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3144 else
cea2e8a9 3145 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3146
3147 /* We absolutely must clear out any saved ids here, so we */
3148 /* exec the real perl, substituting fd script for scriptname. */
3149 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3150 PerlIO_rewind(PL_rsfp);
3151 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3152 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3153 if (!PL_origargv[which])
cea2e8a9
GS		 3154 Perl_croak(aTHX_ "Permission denied");
3155 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3156 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3157#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3158 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3159#endif
a7cb1f99 3160 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3161 (int)PERL_REVISION, (int)PERL_VERSION,
3162 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3163 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3164#endif /* IAMSUID */
a687059c 3165#else /* !DOSUID */
3280af22 3166 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3167#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3168 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3169 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3170 ||
b28d0864 3171 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3172 )
b28d0864 3173 if (!PL_do_undump)
cea2e8a9 3174 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3175FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3176#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3177 /* not set-id, must be wrapped */
a687059c 3178 }
13281fa4 3179#endif /* DOSUID */
79072805 3180}
13281fa4 3181
76e3520e 3182STATIC void
cea2e8a9 3183S_find_beginning(pTHX)
79072805 3184{
6e72f9df 3185 register char *s, *s2;
33b78306
LW		 3186
3187 /* skip forward in input to the real script? */
3188
bbce6d69 3189 forbid_setid("-x");
bf4acbe4 3190#ifdef MACOS_TRADITIONAL
084592ab 3191 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3192
bf4acbe4
GS		 3193 while (PL_doextract || gMacPerl_AlwaysExtract) {
3194 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3195 if (!gMacPerl_AlwaysExtract)
3196 Perl_croak(aTHX_ "No Perl script found in input\n");
3197
3198 if (PL_doextract) /* require explicit override ? */
3199 if (!OverrideExtract(PL_origfilename))
3200 Perl_croak(aTHX_ "User aborted script\n");
3201 else
3202 PL_doextract = FALSE;
3203
3204 /* Pater peccavi, file does not have #! */
3205 PerlIO_rewind(PL_rsfp);
ac27b0f5 3206
bf4acbe4
GS		 3207 break;
3208 }
3209#else
3280af22
NIS		 3210 while (PL_doextract) {
3211 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3212 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3213#endif
4f0c37ba
IZ		 3214 s2 = s;
3215 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3216 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3217 PL_doextract = FALSE;
6e72f9df 3218 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3219 s2 = s;
3220 while (*s == ' ' || *s == '\t') s++;
3221 if (*s++ == '-') {
3222 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3223 if (strnEQ(s2-4,"perl",4))
3224 /*SUPPRESS 530*/
155aba94
GS		 3225 while ((s = moreswitches(s)))
3226 ;
33b78306 3227 }
95e8664e
CN		 3228#ifdef MACOS_TRADITIONAL
3229 break;
3230#endif
83025b21
LW		 3231 }
3232 }
3233}
3234
afe37c7d 3235
76e3520e 3236STATIC void
cea2e8a9 3237S_init_ids(pTHX)
352d5a3a 3238{
d8eceb89
JH		 3239 PL_uid = PerlProc_getuid();
3240 PL_euid = PerlProc_geteuid();
3241 PL_gid = PerlProc_getgid();
3242 PL_egid = PerlProc_getegid();
748a9306 3243#ifdef VMS
b28d0864
NIS		 3244 PL_uid |= PL_gid << 16;
3245 PL_euid |= PL_egid << 16;
748a9306 3246#endif
3280af22 3247 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3248}
79072805 3249
76e3520e 3250STATIC void
cea2e8a9 3251S_forbid_setid(pTHX_ char *s)
bbce6d69 3252{
3280af22 3253 if (PL_euid != PL_uid)
cea2e8a9 3254 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3255 if (PL_egid != PL_gid)
cea2e8a9 3256 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3257}
3258
1ee4443e
IZ		 3259void
3260Perl_init_debugger(pTHX)
748a9306 3261{
1ee4443e
IZ		 3262 HV *ostash = PL_curstash;
3263
3280af22
NIS		 3264 PL_curstash = PL_debstash;
3265 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3266 AvREAL_off(PL_dbargs);
3267 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3268 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3269 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3270 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3271 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3272 sv_setiv(PL_DBsingle, 0);
3280af22 3273 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3274 sv_setiv(PL_DBtrace, 0);
3280af22 3275 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3276 sv_setiv(PL_DBsignal, 0);
1ee4443e 3277 PL_curstash = ostash;
352d5a3a
LW		 3278}
3279
2ce36478
SM		 3280#ifndef STRESS_REALLOC
3281#define REASONABLE(size) (size)
3282#else
3283#define REASONABLE(size) (1) /* unreasonable */
3284#endif
3285
11343788 3286void
cea2e8a9 3287Perl_init_stacks(pTHX)
79072805 3288{
e336de0d 3289 /* start with 128-item stack and 8K cxstack */
3280af22 3290 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3291 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3292 PL_curstackinfo->si_type = PERLSI_MAIN;
3293 PL_curstack = PL_curstackinfo->si_stack;
3294 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3295
3280af22
NIS		 3296 PL_stack_base = AvARRAY(PL_curstack);
3297 PL_stack_sp = PL_stack_base;
3298 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3299
3280af22
NIS		 3300 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3301 PL_tmps_floor = -1;
3302 PL_tmps_ix = -1;
3303 PL_tmps_max = REASONABLE(128);
8990e307 3304
3280af22
NIS		 3305 New(54,PL_markstack,REASONABLE(32),I32);
3306 PL_markstack_ptr = PL_markstack;
3307 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3308
ce2f7c3b 3309 SET_MARK_OFFSET;
e336de0d 3310
3280af22
NIS		 3311 New(54,PL_scopestack,REASONABLE(32),I32);
3312 PL_scopestack_ix = 0;
3313 PL_scopestack_max = REASONABLE(32);
79072805 3314
3280af22
NIS		 3315 New(54,PL_savestack,REASONABLE(128),ANY);
3316 PL_savestack_ix = 0;
3317 PL_savestack_max = REASONABLE(128);
79072805 3318
3280af22
NIS		 3319 New(54,PL_retstack,REASONABLE(16),OP*);
3320 PL_retstack_ix = 0;
3321 PL_retstack_max = REASONABLE(16);
378cc40b 3322}
33b78306 3323
2ce36478
SM		 3324#undef REASONABLE
3325
76e3520e 3326STATIC void
cea2e8a9 3327S_nuke_stacks(pTHX)
6e72f9df 3328{
3280af22
NIS		 3329 while (PL_curstackinfo->si_next)
3330 PL_curstackinfo = PL_curstackinfo->si_next;
3331 while (PL_curstackinfo) {
3332 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3333 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3334 Safefree(PL_curstackinfo->si_cxstack);
3335 Safefree(PL_curstackinfo);
3336 PL_curstackinfo = p;
e336de0d 3337 }
3280af22
NIS		 3338 Safefree(PL_tmps_stack);
3339 Safefree(PL_markstack);
3340 Safefree(PL_scopestack);
3341 Safefree(PL_savestack);
3342 Safefree(PL_retstack);
378cc40b 3343}
33b78306 3344
76e3520e 3345#ifndef PERL_OBJECT
760ac839 3346static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3347#endif
7aa04957 3348
76e3520e 3349STATIC void
cea2e8a9 3350S_init_lexer(pTHX)
8990e307 3351{
76e3520e
GS		 3352#ifdef PERL_OBJECT
3353 PerlIO *tmpfp;
3354#endif
3280af22
NIS		 3355 tmpfp = PL_rsfp;
3356 PL_rsfp = Nullfp;
3357 lex_start(PL_linestr);
3358 PL_rsfp = tmpfp;
79cb57f6 3359 PL_subname = newSVpvn("main",4);
8990e307
LW		 3360}
3361
76e3520e 3362STATIC void
cea2e8a9 3363S_init_predump_symbols(pTHX)
45d8adaa 3364{
93a17b20 3365 GV *tmpgv;
af8c498a 3366 IO *io;
79072805 3367
864dbfa3 3368 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3369 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3370 GvMULTI_on(PL_stdingv);
af8c498a 3371 io = GvIOp(PL_stdingv);
a04651f4 3372 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3373 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3374 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3375 GvMULTI_on(tmpgv);
af8c498a 3376 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3377
85e6fe83 3378 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3379 GvMULTI_on(tmpgv);
af8c498a 3380 io = GvIOp(tmpgv);
a04651f4 3381 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3382 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3383 setdefout(tmpgv);
adbc6bb1 3384 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3385 GvMULTI_on(tmpgv);
af8c498a 3386 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3387
bf49b057
GS		 3388 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3389 GvMULTI_on(PL_stderrgv);
3390 io = GvIOp(PL_stderrgv);
a04651f4 3391 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3392 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3393 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3394 GvMULTI_on(tmpgv);
af8c498a 3395 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3396
3280af22 3397 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3398
bf4acbe4
GS		 3399 if (PL_osname)
3400 Safefree(PL_osname);
3401 PL_osname = savepv(OSNAME);
79072805 3402}
33b78306 3403
76e3520e 3404STATIC void
cea2e8a9 3405S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3406{
79072805
LW		 3407 char *s;
3408 SV *sv;
3409 GV* tmpgv;
9cbac4c7 3410#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3411 char **dup_env_base = 0;
103a7189 3412 int dup_env_count = 0;
9cbac4c7 3413#endif
fe14fcc3 3414
79072805 3415 argc--,argv++; /* skip name of script */
3280af22 3416 if (PL_doswitches) {
79072805
LW		 3417 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3418 if (!argv[0][1])
3419 break;
379d538a 3420 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3421 argc--,argv++;
3422 break;
3423 }
155aba94 3424 if ((s = strchr(argv[0], '='))) {
79072805 3425 *s++ = '\0';
85e6fe83 3426 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3427 }
3428 else
85e6fe83 3429 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3430 }
79072805 3431 }
3280af22
NIS		 3432 PL_toptarget = NEWSV(0,0);
3433 sv_upgrade(PL_toptarget, SVt_PVFM);
3434 sv_setpvn(PL_toptarget, "", 0);
3435 PL_bodytarget = NEWSV(0,0);
3436 sv_upgrade(PL_bodytarget, SVt_PVFM);
3437 sv_setpvn(PL_bodytarget, "", 0);
3438 PL_formtarget = PL_bodytarget;
79072805 3439
bbce6d69 3440 TAINT;
155aba94 3441 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3442#ifdef MACOS_TRADITIONAL
3443 /* $0 is not majick on a Mac */
3444 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3445#else
3280af22 3446 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3447 magicname("0", "0", 1);
bf4acbe4 3448#endif
79072805 3449 }
155aba94 3450 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3451#ifdef OS2
23da6c43 3452 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3453#else
3280af22 3454 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3455#endif
155aba94 3456 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3457 GvMULTI_on(PL_argvgv);
3458 (void)gv_AVadd(PL_argvgv);
3459 av_clear(GvAVn(PL_argvgv));
79072805 3460 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3461 SV *sv = newSVpv(argv[0],0);
3462 av_push(GvAVn(PL_argvgv),sv);
3463 if (PL_widesyscalls)
e84ff256 3464 (void)sv_utf8_decode(sv);
79072805
LW		 3465 }
3466 }
155aba94 3467 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3468 HV *hv;
3280af22
NIS		 3469 GvMULTI_on(PL_envgv);
3470 hv = GvHVn(PL_envgv);
14befaf4 3471 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3472#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3473 /* Note that if the supplied env parameter is actually a copy
3474 of the global environ then it may now point to free'd memory
3475 if the environment has been modified since. To avoid this
3476 problem we treat env==NULL as meaning 'use the default'
3477 */
3478 if (!env)
3479 env = environ;
5aabfad6 3480 if (env != environ)
79072805 3481 environ[0] = Nullch;
103a7189
JH		 3482#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3483 {
3484 char **env_base;
9041c2e3 3485 for (env_base = env; *env; env++)
103a7189
JH		 3486 dup_env_count++;
3487 if ((dup_env_base = (char **)
480bfd1e 3488 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3489 char **dup_env;
3490 for (env = env_base, dup_env = dup_env_base;
3491 *env;
480bfd1e
JH		 3492 env++, dup_env++) {
3493 /* With environ one needs to use safesysmalloc(). */
3494 *dup_env = safesysmalloc(strlen(*env) + 1);
3495 (void)strcpy(*dup_env, *env);
3496 }
103a7189
JH		 3497 *dup_env = Nullch;
3498 env = dup_env_base;
3499 } /* else what? */
3500 }
3501#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3502 if (env)
3503 for (; *env; env++) {
93a17b20 3504 if (!(s = strchr(*env,'=')))
79072805
LW		 3505 continue;
3506 *s++ = '\0';
60ce6247 3507#if defined(MSDOS)
137443ea 3508 (void)strupr(*env);
3509#endif
79072805
LW		 3510 sv = newSVpv(s--,0);
3511 (void)hv_store(hv, *env, s - *env, sv, 0);
3512 *s = '=';
764df951 3513 }
480bfd1e 3514#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3515 if (dup_env_base) {
3516 char **dup_env;
3517 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3518 safesysfree(*dup_env);
3519 safesysfree(dup_env_base);
103a7189 3520 }
7e0f6a1f 3521#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3522#endif /* USE_ENVIRON_ARRAY */
79072805 3523 }
bbce6d69 3524 TAINT_NOT;
155aba94 3525 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3526 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3527}
34de22dd 3528
76e3520e 3529STATIC void
cea2e8a9 3530S_init_perllib(pTHX)
34de22dd 3531{
85e6fe83 3532 char *s;
3280af22 3533 if (!PL_tainting) {
552a7a9b 3534#ifndef VMS
76e3520e 3535 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3536 if (s)
9c8a64f0 3537 incpush(s, TRUE, TRUE);
85e6fe83 3538 else
9c8a64f0 3539 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3540#else /* VMS */
3541 /* Treat PERL5?LIB as a possible search list logical name -- the
3542 * "natural" VMS idiom for a Unix path string. We allow each
3543 * element to be a set of |-separated directories for compatibility.
3544 */
3545 char buf[256];
3546 int idx = 0;
3547 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3548 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3549 else
9c8a64f0 3550 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3551#endif /* VMS */
85e6fe83 3552 }
34de22dd 3553
c90c0ff4 3554/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3555 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3556*/
4633a7c4 3557#ifdef APPLLIB_EXP
9c8a64f0 3558 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3559#endif
4633a7c4 3560
fed7345c 3561#ifdef ARCHLIB_EXP
9c8a64f0 3562 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3563#endif
bf4acbe4
GS		 3564#ifdef MACOS_TRADITIONAL
3565 {
3566 struct stat tmpstatbuf;
3567 SV * privdir = NEWSV(55, 0);
3568 char * macperl = PerlEnv_getenv("MACPERL");
3569
3570 if (!macperl)
3571 macperl = "";
3572
3573 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3574 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3575 incpush(SvPVX(privdir), TRUE, FALSE);
3576 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3577 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3578 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3579
bf4acbe4
GS		 3580 SvREFCNT_dec(privdir);
3581 }
3582 if (!PL_tainting)
3583 incpush(":", FALSE, FALSE);
3584#else
fed7345c 3585#ifndef PRIVLIB_EXP
65f19062 3586# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3587#endif
ac27b0f5 3588#if defined(WIN32)
9c8a64f0 3589 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3590#else
9c8a64f0 3591 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3592#endif
4633a7c4 3593
65f19062 3594#ifdef SITEARCH_EXP
3b290362
GS		 3595 /* sitearch is always relative to sitelib on Windows for
3596 * DLL-based path intuition to work correctly */
3597# if !defined(WIN32)
9c8a64f0 3598 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3599# endif
3600#endif
3601
4633a7c4 3602#ifdef SITELIB_EXP
65f19062 3603# if defined(WIN32)
9c8a64f0 3604 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3605# else
9c8a64f0 3606 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3607# endif
3608#endif
189d1e8d 3609
65f19062 3610#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3611 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3612#endif
65f19062
GS		 3613
3614#ifdef PERL_VENDORARCH_EXP
4ea817c6 3615 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3616 * DLL-based path intuition to work correctly */
3617# if !defined(WIN32)
9c8a64f0 3618 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3619# endif
4b03c463 3620#endif
65f19062
GS		 3621
3622#ifdef PERL_VENDORLIB_EXP
3623# if defined(WIN32)
9c8a64f0 3624 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3625# else
9c8a64f0 3626 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3627# endif
a3635516 3628#endif
65f19062
GS		 3629
3630#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3631 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3632#endif
65f19062 3633
3b777bb4
GS		 3634#ifdef PERL_OTHERLIBDIRS
3635 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3636#endif
3637
3280af22 3638 if (!PL_tainting)
9c8a64f0 3639 incpush(".", FALSE, FALSE);
bf4acbe4 3640#endif /* MACOS_TRADITIONAL */
774d564b 3641}
3642
ed79a026 3643#if defined(DOSISH) || defined(EPOC)
774d564b 3644# define PERLLIB_SEP ';'
3645#else
3646# if defined(VMS)
3647# define PERLLIB_SEP '|'
3648# else
bf4acbe4
GS		 3649# if defined(MACOS_TRADITIONAL)
3650# define PERLLIB_SEP ','
3651# else
3652# define PERLLIB_SEP ':'
3653# endif
774d564b 3654# endif
3655#endif
3656#ifndef PERLLIB_MANGLE
3657# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3658#endif
774d564b 3659
76e3520e 3660STATIC void
9c8a64f0 3661S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3662{
3663 SV *subdir = Nullsv;
774d564b 3664
3b290362 3665 if (!p || !*p)
774d564b 3666 return;
3667
9c8a64f0 3668 if (addsubdirs || addoldvers) {
00db4c45 3669 subdir = sv_newmortal();
774d564b 3670 }
3671
3672 /* Break at all separators */
3673 while (p && *p) {
8c52afec 3674 SV *libdir = NEWSV(55,0);
774d564b 3675 char *s;
3676
3677 /* skip any consecutive separators */
3678 while ( *p == PERLLIB_SEP ) {
3679 /* Uncomment the next line for PATH semantics */
79cb57f6 3680 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3681 p++;
3682 }
3683
3684 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3685 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3686 (STRLEN)(s - p));
3687 p = s + 1;
3688 }
3689 else {
3690 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3691 p = Nullch; /* break out */
3692 }
bf4acbe4
GS		 3693#ifdef MACOS_TRADITIONAL
3694 if (!strchr(SvPVX(libdir), ':'))
3695 sv_insert(libdir, 0, 0, ":", 1);
3696 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3697 sv_catpv(libdir, ":");
3698#endif
774d564b 3699
3700 /*
3701 * BEFORE pushing libdir onto @INC we may first push version- and
3702 * archname-specific sub-directories.
3703 */
9c8a64f0 3704 if (addsubdirs || addoldvers) {
29d82f8d 3705#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3706 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3707 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3708 const char **incver;
3709#endif
774d564b 3710 struct stat tmpstatbuf;
aa689395 3711#ifdef VMS
3712 char *unix;
3713 STRLEN len;
774d564b 3714
2d8e6c8d 3715 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3716 len = strlen(unix);
3717 while (unix[len-1] == '/') len--; /* Cosmetic */
3718 sv_usepvn(libdir,unix,len);
3719 }
3720 else
bf49b057 3721 PerlIO_printf(Perl_error_log,
aa689395 3722 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3723 SvPV(libdir,len));
aa689395 3724#endif
9c8a64f0 3725 if (addsubdirs) {
bf4acbe4
GS		 3726#ifdef MACOS_TRADITIONAL
3727#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3728#define PERL_ARCH_FMT "%s:"
3729#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3730#else
3731#define PERL_AV_SUFFIX_FMT "/"
3732#define PERL_ARCH_FMT "/%s"
084592ab 3733#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3734#endif
9c8a64f0 3735 /* .../version/archname if -d .../version/archname */
084592ab 3736 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3737 libdir,
3738 (int)PERL_REVISION, (int)PERL_VERSION,
3739 (int)PERL_SUBVERSION, ARCHNAME);
3740 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3741 S_ISDIR(tmpstatbuf.st_mode))
3742 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3743
9c8a64f0 3744 /* .../version if -d .../version */
084592ab 3745 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3746 (int)PERL_REVISION, (int)PERL_VERSION,
3747 (int)PERL_SUBVERSION);
3748 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3749 S_ISDIR(tmpstatbuf.st_mode))
3750 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3751
3752 /* .../archname if -d .../archname */
bf4acbe4 3753 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3754 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3755 S_ISDIR(tmpstatbuf.st_mode))
3756 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3757 }
9c8a64f0 3758
9c8a64f0 3759#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3760 if (addoldvers) {
9c8a64f0
GS		 3761 for (incver = incverlist; *incver; incver++) {
3762 /* .../xxx if -d .../xxx */
bf4acbe4 3763 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3764 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3765 S_ISDIR(tmpstatbuf.st_mode))
3766 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3767 }
3768 }
29d82f8d 3769#endif
774d564b 3770 }
3771
3772 /* finally push this lib directory on the end of @INC */
3280af22 3773 av_push(GvAVn(PL_incgv), libdir);
774d564b 3774 }
34de22dd 3775}
93a17b20 3776
199100c8 3777#ifdef USE_THREADS
76e3520e 3778STATIC struct perl_thread *
cea2e8a9 3779S_init_main_thread(pTHX)
199100c8 3780{
c5be433b 3781#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3782 struct perl_thread *thr;
cea2e8a9 3783#endif
199100c8
MB		 3784 XPV *xpv;
3785
52e1cb5e 3786 Newz(53, thr, 1, struct perl_thread);
533c011a 3787 PL_curcop = &PL_compiling;
c5be433b 3788 thr->interp = PERL_GET_INTERP;
199100c8 3789 thr->cvcache = newHV();
54b9620d 3790 thr->threadsv = newAV();
940cb80d 3791 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3792 thr->specific = newAV();
3793 thr->flags = THRf_R_JOINABLE;
3794 MUTEX_INIT(&thr->mutex);
3795 /* Handcraft thrsv similarly to mess_sv */
533c011a 3796 New(53, PL_thrsv, 1, SV);
199100c8 3797 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3798 SvFLAGS(PL_thrsv) = SVt_PV;
3799 SvANY(PL_thrsv) = (void*)xpv;
3800 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3801 SvPVX(PL_thrsv) = (char*)thr;
3802 SvCUR_set(PL_thrsv, sizeof(thr));
3803 SvLEN_set(PL_thrsv, sizeof(thr));
3804 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3805 thr->oursv = PL_thrsv;
3806 PL_chopset = " \n-";
3967c732 3807 PL_dumpindent = 4;
533c011a
NIS		 3808
3809 MUTEX_LOCK(&PL_threads_mutex);
3810 PL_nthreads++;
199100c8
MB		 3811 thr->tid = 0;
3812 thr->next = thr;
3813 thr->prev = thr;
8dcd6f7b 3814 thr->thr_done = 0;
533c011a 3815 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3816
4b026b9e 3817#ifdef HAVE_THREAD_INTERN
4f63d024 3818 Perl_init_thread_intern(thr);
235db74f
GS		 3819#endif
3820
3821#ifdef SET_THREAD_SELF
3822 SET_THREAD_SELF(thr);
199100c8
MB		 3823#else
3824 thr->self = pthread_self();
235db74f 3825#endif /* SET_THREAD_SELF */
06d86050 3826 PERL_SET_THX(thr);
199100c8
MB		 3827
3828 /*
411caa50
JH		 3829 * These must come after the thread self setting
3830 * because sv_setpvn does SvTAINT and the taint
3831 * fields thread selfness being set.
199100c8 3832 */
533c011a
NIS		 3833 PL_toptarget = NEWSV(0,0);
3834 sv_upgrade(PL_toptarget, SVt_PVFM);
3835 sv_setpvn(PL_toptarget, "", 0);
3836 PL_bodytarget = NEWSV(0,0);
3837 sv_upgrade(PL_bodytarget, SVt_PVFM);
3838 sv_setpvn(PL_bodytarget, "", 0);
3839 PL_formtarget = PL_bodytarget;
79cb57f6 3840 thr->errsv = newSVpvn("", 0);
78857c3c 3841 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3842
533c011a 3843 PL_maxscream = -1;
a2efc822 3844 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3845 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3846 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3847 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3848 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3849 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3850 PL_regindent = 0;
3851 PL_reginterp_cnt = 0;
5c0ca799 3852
199100c8
MB		 3853 return thr;
3854}
3855#endif /* USE_THREADS */
3856
93a17b20 3857void
864dbfa3 3858Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3859{
971a9dd3 3860 SV *atsv;
57843af0 3861 line_t oldline = CopLINE(PL_curcop);
312caa8e 3862 CV *cv;
22921e25 3863 STRLEN len;
6224f72b 3864 int ret;
db36c5a1 3865 dJMPENV;
93a17b20 3866
76e3520e 3867 while (AvFILL(paramList) >= 0) {
312caa8e 3868 cv = (CV*)av_shift(paramList);
aefff11f 3869 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3870 /* save PL_beginav for compiler */
3871 if (! PL_beginav_save)
3872 PL_beginav_save = newAV();
3873 av_push(PL_beginav_save, (SV*)cv);
3874 } else {
3875 SAVEFREESV(cv);
3876 }
14dd3ad8
GS		 3877#ifdef PERL_FLEXIBLE_EXCEPTIONS
3878 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3879#else
3880 JMPENV_PUSH(ret);
3881#endif
6224f72b 3882 switch (ret) {
312caa8e 3883 case 0:
14dd3ad8
GS		 3884#ifndef PERL_FLEXIBLE_EXCEPTIONS
3885 call_list_body(cv);
3886#endif
971a9dd3 3887 atsv = ERRSV;
312caa8e
CS		 3888 (void)SvPV(atsv, len);
3889 if (len) {
971a9dd3 3890 STRLEN n_a;
312caa8e 3891 PL_curcop = &PL_compiling;
57843af0 3892 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3893 if (paramList == PL_beginav)
3894 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3895 else
4f25aa18
GS		 3896 Perl_sv_catpvf(aTHX_ atsv,
3897 "%s failed--call queue aborted",
7d30b5c4 3898 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3899 : paramList == PL_initav ? "INIT"
3900 : "END");
312caa8e
CS		 3901 while (PL_scopestack_ix > oldscope)
3902 LEAVE;
14dd3ad8 3903 JMPENV_POP;
971a9dd3 3904 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3905 }
85e6fe83 3906 break;
6224f72b 3907 case 1:
f86702cc 3908 STATUS_ALL_FAILURE;
85e6fe83 3909 /* FALL THROUGH */
6224f72b 3910 case 2:
85e6fe83 3911 /* my_exit() was called */
3280af22 3912 while (PL_scopestack_ix > oldscope)
2ae324a7 3913 LEAVE;
84902520 3914 FREETMPS;
3280af22 3915 PL_curstash = PL_defstash;
3280af22 3916 PL_curcop = &PL_compiling;
57843af0 3917 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3918 JMPENV_POP;
cc3604b1 3919 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3920 if (paramList == PL_beginav)
cea2e8a9 3921 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3922 else
4f25aa18 3923 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3924 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3925 : paramList == PL_initav ? "INIT"
3926 : "END");
85e6fe83 3927 }
f86702cc 3928 my_exit_jump();
85e6fe83 3929 /* NOTREACHED */
6224f72b 3930 case 3:
312caa8e
CS		 3931 if (PL_restartop) {
3932 PL_curcop = &PL_compiling;
57843af0 3933 CopLINE_set(PL_curcop, oldline);
312caa8e 3934 JMPENV_JUMP(3);
85e6fe83 3935 }
bf49b057 3936 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3937 FREETMPS;
3938 break;
8990e307 3939 }
14dd3ad8 3940 JMPENV_POP;
93a17b20 3941 }
93a17b20 3942}
93a17b20 3943
14dd3ad8 3944#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3945STATIC void *
14dd3ad8 3946S_vcall_list_body(pTHX_ va_list args)
312caa8e 3947{
312caa8e 3948 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3949 return call_list_body(cv);
3950}
3951#endif
312caa8e 3952
14dd3ad8
GS		 3953STATIC void *
3954S_call_list_body(pTHX_ CV *cv)
3955{
312caa8e 3956 PUSHMARK(PL_stack_sp);
864dbfa3 3957 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3958 return NULL;
3959}
3960
f86702cc 3961void
864dbfa3 3962Perl_my_exit(pTHX_ U32 status)
f86702cc 3963{
8b73bbec 3964 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3965 thr, (unsigned long) status));
f86702cc 3966 switch (status) {
3967 case 0:
3968 STATUS_ALL_SUCCESS;
3969 break;
3970 case 1:
3971 STATUS_ALL_FAILURE;
3972 break;
3973 default:
3974 STATUS_NATIVE_SET(status);
3975 break;
3976 }
3977 my_exit_jump();
3978}
3979
3980void
864dbfa3 3981Perl_my_failure_exit(pTHX)
f86702cc 3982{
3983#ifdef VMS
3984 if (vaxc$errno & 1) {
4fdae800 3985 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3986 STATUS_NATIVE_SET(44);
f86702cc 3987 }
3988 else {
ff0cee69 3989 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3990 STATUS_NATIVE_SET(44);
f86702cc 3991 else
4fdae800 3992 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3993 }
3994#else
9b599b2a 3995 int exitstatus;
f86702cc 3996 if (errno & 255)
3997 STATUS_POSIX_SET(errno);
9b599b2a 3998 else {
ac27b0f5 3999 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 4000 if (exitstatus & 255)
4001 STATUS_POSIX_SET(exitstatus);
4002 else
4003 STATUS_POSIX_SET(255);
4004 }
f86702cc 4005#endif
4006 my_exit_jump();
93a17b20
LW		 4007}
4008
76e3520e 4009STATIC void
cea2e8a9 4010S_my_exit_jump(pTHX)
f86702cc 4011{
c09156bb 4012 register PERL_CONTEXT *cx;
f86702cc 4013 I32 gimme;
4014 SV **newsp;
4015
3280af22
NIS		 4016 if (PL_e_script) {
4017 SvREFCNT_dec(PL_e_script);
4018 PL_e_script = Nullsv;
f86702cc 4019 }
4020
3280af22 4021 POPSTACK_TO(PL_mainstack);
f86702cc 4022 if (cxstack_ix >= 0) {
4023 if (cxstack_ix > 0)
4024 dounwind(0);
3280af22 4025 POPBLOCK(cx,PL_curpm);
f86702cc 4026 LEAVE;
4027 }
ff0cee69 4028
6224f72b 4029 JMPENV_JUMP(2);
f86702cc 4030}
873ef191 4031
7a5f8e82 4032#ifdef PERL_OBJECT
873ef191 4033#include "XSUB.h"
51371543 4034#endif
873ef191 4035
0cb96387
GS		 4036static I32
4037read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 4038{
4039 char *p, *nl;
3280af22 4040 p = SvPVX(PL_e_script);
873ef191 4041 nl = strchr(p, '\n');
3280af22 4042 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4043 if (nl-p == 0) {
0cb96387 4044 filter_del(read_e_script);
873ef191 4045 return 0;
7dfe3f66 4046 }
873ef191 4047 sv_catpvn(buf_sv, p, nl-p);
3280af22 4048 sv_chop(PL_e_script, nl);
873ef191
GS		 4049 return 1;
4050}
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