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Integrate Lingua::KO::Hangul::Util 0.02, Unicode::Normalize,
[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;
cf756827 1044 char *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
cf756827 1274 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1275 {
cf756827 1276 char *popt = s;
74288ac8
GS		 1277 while (isSPACE(*s))
1278 s++;
1279 if (*s == '-' && *(s+1) == 'T')
1280 PL_tainting = TRUE;
1281 else {
cf756827 1282 char *popt_copy = Nullch;
74288ac8 1283 while (s && *s) {
4ea8f8fb 1284 char *d;
74288ac8
GS		 1285 while (isSPACE(*s))
1286 s++;
1287 if (*s == '-') {
1288 s++;
1289 if (isSPACE(*s))
1290 continue;
1291 }
4ea8f8fb 1292 d = s;
74288ac8
GS		 1293 if (!*s)
1294 break;
1295 if (!strchr("DIMUdmw", *s))
cea2e8a9 1296 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1297 while (++s && *s) {
1298 if (isSPACE(*s)) {
cf756827
GS		 1299 if (!popt_copy) {
1300 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1301 s = popt_copy + (s - popt);
1302 d = popt_copy + (d - popt);
1303 }
4ea8f8fb
MS		 1304 *s++ = '\0';
1305 break;
1306 }
1307 }
1308 moreswitches(d);
6224f72b 1309 }
6224f72b
GS		 1310 }
1311 }
a0d0e21e 1312
6224f72b
GS		 1313 if (!scriptname)
1314 scriptname = argv[0];
3280af22 1315 if (PL_e_script) {
6224f72b
GS		 1316 argc++,argv--;
1317 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1318 }
1319 else if (scriptname == Nullch) {
1320#ifdef MSDOS
1321 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1322 moreswitches("h");
1323#endif
1324 scriptname = "-";
1325 }
1326
1327 init_perllib();
1328
1329 open_script(scriptname,dosearch,sv,&fdscript);
1330
1331 validate_suid(validarg, scriptname,fdscript);
1332
64ca3a65 1333#ifndef PERL_MICRO
0b5b802d
GS		 1334#if defined(SIGCHLD) || defined(SIGCLD)
1335 {
1336#ifndef SIGCHLD
1337# define SIGCHLD SIGCLD
1338#endif
1339 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1340 if (sigstate == SIG_IGN) {
1341 if (ckWARN(WARN_SIGNAL))
1342 Perl_warner(aTHX_ WARN_SIGNAL,
1343 "Can't ignore signal CHLD, forcing to default");
1344 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1345 }
1346 }
1347#endif
64ca3a65 1348#endif
0b5b802d 1349
bf4acbe4
GS		 1350#ifdef MACOS_TRADITIONAL
1351 if (PL_doextract || gMacPerl_AlwaysExtract) {
1352#else
f4c556ac 1353 if (PL_doextract) {
bf4acbe4 1354#endif
6224f72b 1355 find_beginning();
f4c556ac
GS		 1356 if (cddir && PerlDir_chdir(cddir) < 0)
1357 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1358
1359 }
6224f72b 1360
3280af22
NIS		 1361 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1362 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1363 CvUNIQUE_on(PL_compcv);
1364
1365 PL_comppad = newAV();
1366 av_push(PL_comppad, Nullsv);
1367 PL_curpad = AvARRAY(PL_comppad);
1368 PL_comppad_name = newAV();
1369 PL_comppad_name_fill = 0;
1370 PL_min_intro_pending = 0;
1371 PL_padix = 0;
6224f72b 1372#ifdef USE_THREADS
79cb57f6 1373 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1374 PL_curpad[0] = (SV*)newAV();
1375 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1376 CvOWNER(PL_compcv) = 0;
1377 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1378 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1379#endif /* USE_THREADS */
1380
1381 comppadlist = newAV();
1382 AvREAL_off(comppadlist);
3280af22
NIS		 1383 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1384 av_store(comppadlist, 1, (SV*)PL_comppad);
1385 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1386
0c4f7ff0 1387 boot_core_PerlIO();
6224f72b 1388 boot_core_UNIVERSAL();
9a34ef1d 1389#ifndef PERL_MICRO
09bef843 1390 boot_core_xsutils();
9a34ef1d 1391#endif
6224f72b
GS		 1392
1393 if (xsinit)
0cb96387 1394 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1395#ifndef PERL_MICRO
ed79a026 1396#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1397 init_os_extras();
6224f72b 1398#endif
64ca3a65 1399#endif
6224f72b 1400
29209bc5 1401#ifdef USE_SOCKS
1b9c9cf5
DH		 1402# ifdef HAS_SOCKS5_INIT
1403 socks5_init(argv[0]);
1404# else
29209bc5 1405 SOCKSinit(argv[0]);
1b9c9cf5 1406# endif
ac27b0f5 1407#endif
29209bc5 1408
6224f72b
GS		 1409 init_predump_symbols();
1410 /* init_postdump_symbols not currently designed to be called */
1411 /* more than once (ENV isn't cleared first, for example) */
1412 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1413 if (!PL_do_undump)
6224f72b
GS		 1414 init_postdump_symbols(argc,argv,env);
1415
1416 init_lexer();
1417
1418 /* now parse the script */
1419
1420 SETERRNO(0,SS$_NORMAL);
3280af22 1421 PL_error_count = 0;
bf4acbe4
GS		 1422#ifdef MACOS_TRADITIONAL
1423 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1424 if (PL_minus_c)
1425 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1426 else {
1427 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1428 MacPerl_MPWFileName(PL_origfilename));
1429 }
1430 }
1431#else
3280af22
NIS		 1432 if (yyparse() || PL_error_count) {
1433 if (PL_minus_c)
cea2e8a9 1434 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1435 else {
cea2e8a9 1436 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1437 PL_origfilename);
6224f72b
GS		 1438 }
1439 }
bf4acbe4 1440#endif
57843af0 1441 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1442 PL_curstash = PL_defstash;
1443 PL_preprocess = FALSE;
1444 if (PL_e_script) {
1445 SvREFCNT_dec(PL_e_script);
1446 PL_e_script = Nullsv;
6224f72b
GS		 1447 }
1448
1449 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1450 SvREFCNT_dec(PL_rs);
1451 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1452 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1453 if (PL_do_undump)
6224f72b
GS		 1454 my_unexec();
1455
57843af0
GS		 1456 if (isWARN_ONCE) {
1457 SAVECOPFILE(PL_curcop);
1458 SAVECOPLINE(PL_curcop);
3280af22 1459 gv_check(PL_defstash);
57843af0 1460 }
6224f72b
GS		 1461
1462 LEAVE;
1463 FREETMPS;
1464
1465#ifdef MYMALLOC
1466 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1467 dump_mstats("after compilation:");
1468#endif
1469
1470 ENTER;
3280af22 1471 PL_restartop = 0;
312caa8e 1472 return NULL;
6224f72b
GS		 1473}
1474
954c1994
GS		 1475/*
1476=for apidoc perl_run
1477
1478Tells a Perl interpreter to run. See L<perlembed>.
1479
1480=cut
1481*/
1482
6224f72b 1483int
0cb96387 1484perl_run(pTHXx)
6224f72b 1485{
6224f72b 1486 I32 oldscope;
14dd3ad8 1487 int ret = 0;
db36c5a1 1488 dJMPENV;
cea2e8a9
GS		 1489#ifdef USE_THREADS
1490 dTHX;
1491#endif
6224f72b 1492
3280af22 1493 oldscope = PL_scopestack_ix;
6224f72b 1494
14dd3ad8 1495#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1496 redo_body:
14dd3ad8
GS		 1497 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1498#else
1499 JMPENV_PUSH(ret);
1500#endif
6224f72b
GS		 1501 switch (ret) {
1502 case 1:
1503 cxstack_ix = -1; /* start context stack again */
312caa8e 1504 goto redo_body;
14dd3ad8
GS		 1505 case 0: /* normal completion */
1506#ifndef PERL_FLEXIBLE_EXCEPTIONS
1507 redo_body:
1508 run_body(oldscope);
1509#endif
1510 /* FALL THROUGH */
1511 case 2: /* my_exit() */
3280af22 1512 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1513 LEAVE;
1514 FREETMPS;
3280af22 1515 PL_curstash = PL_defstash;
6224f72b
GS		 1516#ifdef MYMALLOC
1517 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1518 dump_mstats("after execution: ");
1519#endif
14dd3ad8
GS		 1520 ret = STATUS_NATIVE_EXPORT;
1521 break;
6224f72b 1522 case 3:
312caa8e
CS		 1523 if (PL_restartop) {
1524 POPSTACK_TO(PL_mainstack);
1525 goto redo_body;
6224f72b 1526 }
bf49b057 1527 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1528 FREETMPS;
14dd3ad8
GS		 1529 ret = 1;
1530 break;
6224f72b
GS		 1531 }
1532
14dd3ad8
GS		 1533 JMPENV_POP;
1534 return ret;
312caa8e
CS		 1535}
1536
14dd3ad8 1537#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1538STATIC void *
14dd3ad8 1539S_vrun_body(pTHX_ va_list args)
312caa8e 1540{
312caa8e
CS		 1541 I32 oldscope = va_arg(args, I32);
1542
14dd3ad8
GS		 1543 return run_body(oldscope);
1544}
1545#endif
1546
1547
1548STATIC void *
1549S_run_body(pTHX_ I32 oldscope)
1550{
6224f72b 1551 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1552 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1553
3280af22 1554 if (!PL_restartop) {
6224f72b
GS		 1555 DEBUG_x(dump_all());
1556 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1557 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1558 PTR2UV(thr)));
6224f72b 1559
3280af22 1560 if (PL_minus_c) {
bf4acbe4
GS		 1561#ifdef MACOS_TRADITIONAL
1562 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1563#else
bf49b057 1564 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1565#endif
6224f72b
GS		 1566 my_exit(0);
1567 }
3280af22 1568 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1569 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1570 if (PL_initav)
1571 call_list(oldscope, PL_initav);
6224f72b
GS		 1572 }
1573
1574 /* do it */
1575
3280af22 1576 if (PL_restartop) {
533c011a 1577 PL_op = PL_restartop;
3280af22 1578 PL_restartop = 0;
cea2e8a9 1579 CALLRUNOPS(aTHX);
6224f72b 1580 }
3280af22
NIS		 1581 else if (PL_main_start) {
1582 CvDEPTH(PL_main_cv) = 1;
533c011a 1583 PL_op = PL_main_start;
cea2e8a9 1584 CALLRUNOPS(aTHX);
6224f72b
GS		 1585 }
1586
f6b3007c
JH		 1587 my_exit(0);
1588 /* NOTREACHED */
312caa8e 1589 return NULL;
6224f72b
GS		 1590}
1591
954c1994
GS		 1592/*
1593=for apidoc p||get_sv
1594
1595Returns the SV of the specified Perl scalar. If C<create> is set and the
1596Perl variable does not exist then it will be created. If C<create> is not
1597set and the variable does not exist then NULL is returned.
1598
1599=cut
1600*/
1601
6224f72b 1602SV*
864dbfa3 1603Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1604{
1605 GV *gv;
1606#ifdef USE_THREADS
1607 if (name[1] == '\0' && !isALPHA(name[0])) {
1608 PADOFFSET tmp = find_threadsv(name);
411caa50 1609 if (tmp != NOT_IN_PAD)
6224f72b 1610 return THREADSV(tmp);
6224f72b
GS		 1611 }
1612#endif /* USE_THREADS */
1613 gv = gv_fetchpv(name, create, SVt_PV);
1614 if (gv)
1615 return GvSV(gv);
1616 return Nullsv;
1617}
1618
954c1994
GS		 1619/*
1620=for apidoc p||get_av
1621
1622Returns the AV of the specified Perl array. If C<create> is set and the
1623Perl variable does not exist then it will be created. If C<create> is not
1624set and the variable does not exist then NULL is returned.
1625
1626=cut
1627*/
1628
6224f72b 1629AV*
864dbfa3 1630Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1631{
1632 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1633 if (create)
1634 return GvAVn(gv);
1635 if (gv)
1636 return GvAV(gv);
1637 return Nullav;
1638}
1639
954c1994
GS		 1640/*
1641=for apidoc p||get_hv
1642
1643Returns the HV of the specified Perl hash. If C<create> is set and the
1644Perl variable does not exist then it will be created. If C<create> is not
1645set and the variable does not exist then NULL is returned.
1646
1647=cut
1648*/
1649
6224f72b 1650HV*
864dbfa3 1651Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1652{
a0d0e21e
LW		 1653 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1654 if (create)
1655 return GvHVn(gv);
1656 if (gv)
1657 return GvHV(gv);
1658 return Nullhv;
1659}
1660
954c1994
GS		 1661/*
1662=for apidoc p||get_cv
1663
1664Returns the CV of the specified Perl subroutine. If C<create> is set and
1665the Perl subroutine does not exist then it will be declared (which has the
1666same effect as saying C<sub name;>). If C<create> is not set and the
1667subroutine does not exist then NULL is returned.
1668
1669=cut
1670*/
1671
a0d0e21e 1672CV*
864dbfa3 1673Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1674{
1675 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1676 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1677 /* XXX this is probably not what they think they're getting.
1678 * It has the same effect as "sub name;", i.e. just a forward
1679 * declaration! */
8ebc5c01 1680 if (create && !GvCVu(gv))
774d564b 1681 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1682 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1683 Nullop,
a0d0e21e
LW		 1684 Nullop);
1685 if (gv)
8ebc5c01 1686 return GvCVu(gv);
a0d0e21e
LW		 1687 return Nullcv;
1688}
1689
79072805
LW		 1690/* Be sure to refetch the stack pointer after calling these routines. */
1691
954c1994
GS		 1692/*
1693=for apidoc p||call_argv
1694
1695Performs a callback to the specified Perl sub. See L<perlcall>.
1696
1697=cut
1698*/
1699
a0d0e21e 1700I32
864dbfa3 1701Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1702
8ac85365
NIS		 1703 /* See G_* flags in cop.h */
1704 /* null terminated arg list */
8990e307 1705{
a0d0e21e 1706 dSP;
8990e307 1707
924508f0 1708 PUSHMARK(SP);
a0d0e21e 1709 if (argv) {
8990e307 1710 while (*argv) {
a0d0e21e 1711 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1712 argv++;
1713 }
a0d0e21e 1714 PUTBACK;
8990e307 1715 }
864dbfa3 1716 return call_pv(sub_name, flags);
8990e307
LW		 1717}
1718
954c1994
GS		 1719/*
1720=for apidoc p||call_pv
1721
1722Performs a callback to the specified Perl sub. See L<perlcall>.
1723
1724=cut
1725*/
1726
a0d0e21e 1727I32
864dbfa3 1728Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1729 /* name of the subroutine */
1730 /* See G_* flags in cop.h */
a0d0e21e 1731{
864dbfa3 1732 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1733}
1734
954c1994
GS		 1735/*
1736=for apidoc p||call_method
1737
1738Performs a callback to the specified Perl method. The blessed object must
1739be on the stack. See L<perlcall>.
1740
1741=cut
1742*/
1743
a0d0e21e 1744I32
864dbfa3 1745Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1746 /* name of the subroutine */
1747 /* See G_* flags in cop.h */
a0d0e21e 1748{
968b3946 1749 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1750}
1751
1752/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1753/*
1754=for apidoc p||call_sv
1755
1756Performs a callback to the Perl sub whose name is in the SV. See
1757L<perlcall>.
1758
1759=cut
1760*/
1761
a0d0e21e 1762I32
864dbfa3 1763Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1764 /* See G_* flags in cop.h */
a0d0e21e 1765{
924508f0 1766 dSP;
a0d0e21e 1767 LOGOP myop; /* fake syntax tree node */
968b3946 1768 UNOP method_op;
aa689395 1769 I32 oldmark;
13689cfe 1770 volatile I32 retval = 0;
a0d0e21e 1771 I32 oldscope;
54310121 1772 bool oldcatch = CATCH_GET;
6224f72b 1773 int ret;
533c011a 1774 OP* oldop = PL_op;
db36c5a1 1775 dJMPENV;
1e422769 1776
a0d0e21e
LW		 1777 if (flags & G_DISCARD) {
1778 ENTER;
1779 SAVETMPS;
1780 }
1781
aa689395 1782 Zero(&myop, 1, LOGOP);
54310121 1783 myop.op_next = Nullop;
f51d4af5 1784 if (!(flags & G_NOARGS))
aa689395 1785 myop.op_flags |= OPf_STACKED;
54310121 1786 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1787 (flags & G_ARRAY) ? OPf_WANT_LIST :
1788 OPf_WANT_SCALAR);
462e5cf6 1789 SAVEOP();
533c011a 1790 PL_op = (OP*)&myop;
aa689395 1791
3280af22
NIS		 1792 EXTEND(PL_stack_sp, 1);
1793 *++PL_stack_sp = sv;
aa689395 1794 oldmark = TOPMARK;
3280af22 1795 oldscope = PL_scopestack_ix;
a0d0e21e 1796
3280af22 1797 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1798 /* Handle first BEGIN of -d. */
3280af22 1799 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1800 /* Try harder, since this may have been a sighandler, thus
1801 * curstash may be meaningless. */
3280af22 1802 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1803 && !(flags & G_NODEBUG))
533c011a 1804 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1805
968b3946
GS		 1806 if (flags & G_METHOD) {
1807 Zero(&method_op, 1, UNOP);
1808 method_op.op_next = PL_op;
1809 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1810 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1811 PL_op = (OP*)&method_op;
968b3946
GS		 1812 }
1813
312caa8e 1814 if (!(flags & G_EVAL)) {
0cdb2077 1815 CATCH_SET(TRUE);
14dd3ad8 1816 call_body((OP*)&myop, FALSE);
312caa8e 1817 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1818 CATCH_SET(oldcatch);
312caa8e
CS		 1819 }
1820 else {
d78bda3d 1821 myop.op_other = (OP*)&myop;
3280af22 1822 PL_markstack_ptr--;
4633a7c4
LW		 1823 /* we're trying to emulate pp_entertry() here */
1824 {
c09156bb 1825 register PERL_CONTEXT *cx;
54310121 1826 I32 gimme = GIMME_V;
ac27b0f5 1827
4633a7c4
LW		 1828 ENTER;
1829 SAVETMPS;
ac27b0f5 1830
968b3946 1831 push_return(Nullop);
1d76a5c3 1832 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1833 PUSHEVAL(cx, 0, 0);
533c011a 1834 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1835
faef0170 1836 PL_in_eval = EVAL_INEVAL;
4633a7c4 1837 if (flags & G_KEEPERR)
faef0170 1838 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1839 else
38a03e6e 1840 sv_setpv(ERRSV,"");
4633a7c4 1841 }
3280af22 1842 PL_markstack_ptr++;
a0d0e21e 1843
14dd3ad8
GS		 1844#ifdef PERL_FLEXIBLE_EXCEPTIONS
1845 redo_body:
1846 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1847 (OP*)&myop, FALSE);
14dd3ad8
GS		 1848#else
1849 JMPENV_PUSH(ret);
1850#endif
6224f72b
GS		 1851 switch (ret) {
1852 case 0:
14dd3ad8
GS		 1853#ifndef PERL_FLEXIBLE_EXCEPTIONS
1854 redo_body:
1855 call_body((OP*)&myop, FALSE);
1856#endif
312caa8e
CS		 1857 retval = PL_stack_sp - (PL_stack_base + oldmark);
1858 if (!(flags & G_KEEPERR))
1859 sv_setpv(ERRSV,"");
a0d0e21e 1860 break;
6224f72b 1861 case 1:
f86702cc 1862 STATUS_ALL_FAILURE;
a0d0e21e 1863 /* FALL THROUGH */
6224f72b 1864 case 2:
a0d0e21e 1865 /* my_exit() was called */
3280af22 1866 PL_curstash = PL_defstash;
a0d0e21e 1867 FREETMPS;
14dd3ad8 1868 JMPENV_POP;
cc3604b1 1869 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1870 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1871 my_exit_jump();
a0d0e21e 1872 /* NOTREACHED */
6224f72b 1873 case 3:
3280af22 1874 if (PL_restartop) {
533c011a 1875 PL_op = PL_restartop;
3280af22 1876 PL_restartop = 0;
312caa8e 1877 goto redo_body;
a0d0e21e 1878 }
3280af22 1879 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1880 if (flags & G_ARRAY)
1881 retval = 0;
1882 else {
1883 retval = 1;
3280af22 1884 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1885 }
312caa8e 1886 break;
a0d0e21e 1887 }
a0d0e21e 1888
3280af22 1889 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1890 SV **newsp;
1891 PMOP *newpm;
1892 I32 gimme;
c09156bb 1893 register PERL_CONTEXT *cx;
a0a2876f
LW		 1894 I32 optype;
1895
1896 POPBLOCK(cx,newpm);
1897 POPEVAL(cx);
1898 pop_return();
3280af22 1899 PL_curpm = newpm;
a0a2876f 1900 LEAVE;
a0d0e21e 1901 }
14dd3ad8 1902 JMPENV_POP;
a0d0e21e 1903 }
1e422769 1904
a0d0e21e 1905 if (flags & G_DISCARD) {
3280af22 1906 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1907 retval = 0;
1908 FREETMPS;
1909 LEAVE;
1910 }
533c011a 1911 PL_op = oldop;
a0d0e21e
LW		 1912 return retval;
1913}
1914
14dd3ad8 1915#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1916STATIC void *
14dd3ad8 1917S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1918{
1919 OP *myop = va_arg(args, OP*);
1920 int is_eval = va_arg(args, int);
1921
14dd3ad8 1922 call_body(myop, is_eval);
312caa8e
CS		 1923 return NULL;
1924}
14dd3ad8 1925#endif
312caa8e
CS		 1926
1927STATIC void
14dd3ad8 1928S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1929{
312caa8e
CS		 1930 if (PL_op == myop) {
1931 if (is_eval)
f807eda9 1932 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1933 else
f807eda9 1934 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1935 }
1936 if (PL_op)
cea2e8a9 1937 CALLRUNOPS(aTHX);
312caa8e
CS		 1938}
1939
6e72f9df 1940/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1941
954c1994
GS		 1942/*
1943=for apidoc p||eval_sv
1944
1945Tells Perl to C<eval> the string in the SV.
1946
1947=cut
1948*/
1949
a0d0e21e 1950I32
864dbfa3 1951Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1952
8ac85365 1953 /* See G_* flags in cop.h */
a0d0e21e 1954{
924508f0 1955 dSP;
a0d0e21e 1956 UNOP myop; /* fake syntax tree node */
8fa7f367 1957 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1958 volatile I32 retval = 0;
4633a7c4 1959 I32 oldscope;
6224f72b 1960 int ret;
533c011a 1961 OP* oldop = PL_op;
db36c5a1 1962 dJMPENV;
84902520 1963
4633a7c4
LW		 1964 if (flags & G_DISCARD) {
1965 ENTER;
1966 SAVETMPS;
1967 }
1968
462e5cf6 1969 SAVEOP();
533c011a
NIS		 1970 PL_op = (OP*)&myop;
1971 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1972 EXTEND(PL_stack_sp, 1);
1973 *++PL_stack_sp = sv;
1974 oldscope = PL_scopestack_ix;
79072805 1975
4633a7c4
LW		 1976 if (!(flags & G_NOARGS))
1977 myop.op_flags = OPf_STACKED;
79072805 1978 myop.op_next = Nullop;
6e72f9df 1979 myop.op_type = OP_ENTEREVAL;
54310121 1980 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1981 (flags & G_ARRAY) ? OPf_WANT_LIST :
1982 OPf_WANT_SCALAR);
6e72f9df 1983 if (flags & G_KEEPERR)
1984 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1985
14dd3ad8 1986#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1987 redo_body:
14dd3ad8 1988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1989 (OP*)&myop, TRUE);
14dd3ad8
GS		 1990#else
1991 JMPENV_PUSH(ret);
1992#endif
6224f72b
GS		 1993 switch (ret) {
1994 case 0:
14dd3ad8
GS		 1995#ifndef PERL_FLEXIBLE_EXCEPTIONS
1996 redo_body:
1997 call_body((OP*)&myop,TRUE);
1998#endif
312caa8e
CS		 1999 retval = PL_stack_sp - (PL_stack_base + oldmark);
2000 if (!(flags & G_KEEPERR))
2001 sv_setpv(ERRSV,"");
4633a7c4 2002 break;
6224f72b 2003 case 1:
f86702cc 2004 STATUS_ALL_FAILURE;
4633a7c4 2005 /* FALL THROUGH */
6224f72b 2006 case 2:
4633a7c4 2007 /* my_exit() was called */
3280af22 2008 PL_curstash = PL_defstash;
4633a7c4 2009 FREETMPS;
14dd3ad8 2010 JMPENV_POP;
cc3604b1 2011 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2012 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2013 my_exit_jump();
4633a7c4 2014 /* NOTREACHED */
6224f72b 2015 case 3:
3280af22 2016 if (PL_restartop) {
533c011a 2017 PL_op = PL_restartop;
3280af22 2018 PL_restartop = 0;
312caa8e 2019 goto redo_body;
4633a7c4 2020 }
3280af22 2021 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2022 if (flags & G_ARRAY)
2023 retval = 0;
2024 else {
2025 retval = 1;
3280af22 2026 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2027 }
312caa8e 2028 break;
4633a7c4
LW		 2029 }
2030
14dd3ad8 2031 JMPENV_POP;
4633a7c4 2032 if (flags & G_DISCARD) {
3280af22 2033 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2034 retval = 0;
2035 FREETMPS;
2036 LEAVE;
2037 }
533c011a 2038 PL_op = oldop;
4633a7c4
LW		 2039 return retval;
2040}
2041
954c1994
GS		 2042/*
2043=for apidoc p||eval_pv
2044
2045Tells Perl to C<eval> the given string and return an SV* result.
2046
2047=cut
2048*/
2049
137443ea 2050SV*
864dbfa3 2051Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2052{
2053 dSP;
2054 SV* sv = newSVpv(p, 0);
2055
864dbfa3 2056 eval_sv(sv, G_SCALAR);
137443ea 2057 SvREFCNT_dec(sv);
2058
2059 SPAGAIN;
2060 sv = POPs;
2061 PUTBACK;
2062
2d8e6c8d
GS		 2063 if (croak_on_error && SvTRUE(ERRSV)) {
2064 STRLEN n_a;
cea2e8a9 2065 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2066 }
137443ea 2067
2068 return sv;
2069}
2070
4633a7c4
LW		 2071/* Require a module. */
2072
954c1994
GS		 2073/*
2074=for apidoc p||require_pv
2075
7d3fb230
BS		 2076Tells Perl to C<require> the file named by the string argument. It is
2077analogous to the Perl code C<eval "require '$file'">. It's even
2078implemented that way; consider using Perl_load_module instead.
954c1994 2079
7d3fb230 2080=cut */
954c1994 2081
4633a7c4 2082void
864dbfa3 2083Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2084{
d3acc0f7
JP		 2085 SV* sv;
2086 dSP;
e788e7d3 2087 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2088 PUTBACK;
2089 sv = sv_newmortal();
4633a7c4
LW		 2090 sv_setpv(sv, "require '");
2091 sv_catpv(sv, pv);
2092 sv_catpv(sv, "'");
864dbfa3 2093 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2094 SPAGAIN;
2095 POPSTACK;
79072805
LW		 2096}
2097
79072805 2098void
864dbfa3 2099Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2100{
2101 register GV *gv;
2102
155aba94 2103 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2104 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2105}
2106
76e3520e 2107STATIC void
cea2e8a9 2108S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2109{
ab821d7f 2110 /* This message really ought to be max 23 lines.
75c72d73 2111 * Removed -h because the user already knows that option. Others? */
fb73857a 2112
76e3520e 2113 static char *usage_msg[] = {
fb73857a 2114"-0[octal] specify record separator (\\0, if no argument)",
2115"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2116"-C enable native wide character system interfaces",
1950ee41 2117"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2118"-d[:debugger] run program under debugger",
2119"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2120"-e 'command' one line of program (several -e's allowed, omit programfile)",
2121"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2122"-i[extension] edit <> files in place (makes backup if extension supplied)",
2123"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2124"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2125"-[mM][-]module execute `use/no module...' before executing program",
2126"-n assume 'while (<>) { ... }' loop around program",
2127"-p assume loop like -n but print line also, like sed",
2128"-P run program through C preprocessor before compilation",
2129"-s enable rudimentary parsing for switches after programfile",
2130"-S look for programfile using PATH environment variable",
2131"-T enable tainting checks",
2132"-u dump core after parsing program",
fb73857a 2133"-U allow unsafe operations",
aac3bd0d
GS		 2134"-v print version, subversion (includes VERY IMPORTANT perl info)",
2135"-V[:variable] print configuration summary (or a single Config.pm variable)",
2136"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2137"-W enable all warnings",
2138"-X disable all warnings",
fb73857a 2139"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2140"\n",
2141NULL
2142};
76e3520e 2143 char **p = usage_msg;
fb73857a 2144
b0e47665
GS		 2145 PerlIO_printf(PerlIO_stdout(),
2146 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2147 name);
fb73857a 2148 while (*p)
b0e47665 2149 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2150}
2151
79072805
LW		 2152/* This routine handles any switches that can be given during run */
2153
2154char *
864dbfa3 2155Perl_moreswitches(pTHX_ char *s)
79072805 2156{
ba210ebe 2157 STRLEN numlen;
c07a80fd 2158 U32 rschar;
79072805
LW		 2159
2160 switch (*s) {
2161 case '0':
a863c7d1 2162 {
b21ed0a9 2163 numlen = 0; /* disallow underscores */
dff6d3cd 2164 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2165 SvREFCNT_dec(PL_nrs);
c07a80fd 2166 if (rschar & ~((U8)~0))
3280af22 2167 PL_nrs = &PL_sv_undef;
c07a80fd 2168 else if (!rschar && numlen >= 2)
79cb57f6 2169 PL_nrs = newSVpvn("", 0);
c07a80fd 2170 else {
2171 char ch = rschar;
79cb57f6 2172 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2173 }
2174 return s + numlen;
a863c7d1 2175 }
46487f74
GS		 2176 case 'C':
2177 PL_widesyscalls = TRUE;
2178 s++;
2179 return s;
2304df62 2180 case 'F':
3280af22
NIS		 2181 PL_minus_F = TRUE;
2182 PL_splitstr = savepv(s + 1);
2304df62
AD		 2183 s += strlen(s);
2184 return s;
79072805 2185 case 'a':
3280af22 2186 PL_minus_a = TRUE;
79072805
LW		 2187 s++;
2188 return s;
2189 case 'c':
3280af22 2190 PL_minus_c = TRUE;
79072805
LW		 2191 s++;
2192 return s;
2193 case 'd':
bbce6d69 2194 forbid_setid("-d");
4633a7c4 2195 s++;
70c94a19
RR		 2196 /* The following permits -d:Mod to accepts arguments following an =
2197 in the fashion that -MSome::Mod does. */
2198 if (*s == ':' || *s == '=') {
2199 char *start;
2200 SV *sv;
2201 sv = newSVpv("use Devel::", 0);
2202 start = ++s;
2203 /* We now allow -d:Module=Foo,Bar */
2204 while(isALNUM(*s) || *s==':') ++s;
2205 if (*s != '=')
2206 sv_catpv(sv, start);
2207 else {
2208 sv_catpvn(sv, start, s-start);
2209 sv_catpv(sv, " split(/,/,q{");
2210 sv_catpv(sv, ++s);
2211 sv_catpv(sv, "})");
2212 }
4633a7c4 2213 s += strlen(s);
70c94a19 2214 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2215 }
ed094faf 2216 if (!PL_perldb) {
3280af22 2217 PL_perldb = PERLDB_ALL;
a0d0e21e 2218 init_debugger();
ed094faf 2219 }
79072805
LW		 2220 return s;
2221 case 'D':
0453d815 2222 {
79072805 2223#ifdef DEBUGGING
bbce6d69 2224 forbid_setid("-D");
79072805 2225 if (isALPHA(s[1])) {
04932ac8
DM		 2226 /* if adding extra options, remember to update DEBUG_MASK */
2227 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2228 char *d;
2229
93a17b20 2230 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2231 PL_debug |= 1 << (d - debopts);
79072805
LW		 2232 }
2233 else {
3280af22 2234 PL_debug = atoi(s+1);
79072805
LW		 2235 for (s++; isDIGIT(*s); s++) ;
2236 }
aea4f609 2237 PL_debug |= DEBUG_TOP_FLAG;
79072805 2238#else
0453d815
PM		 2239 if (ckWARN_d(WARN_DEBUGGING))
2240 Perl_warner(aTHX_ WARN_DEBUGGING,
2241 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2242 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2243#endif
2244 /*SUPPRESS 530*/
2245 return s;
0453d815 2246 }
4633a7c4 2247 case 'h':
ac27b0f5 2248 usage(PL_origargv[0]);
6ad3d225 2249 PerlProc_exit(0);
79072805 2250 case 'i':
3280af22
NIS		 2251 if (PL_inplace)
2252 Safefree(PL_inplace);
2253 PL_inplace = savepv(s+1);
79072805 2254 /*SUPPRESS 530*/
3280af22 2255 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2256 if (*s) {
fb73857a 2257 *s++ = '\0';
7b8d334a
GS		 2258 if (*s == '-') /* Additional switches on #! line. */
2259 s++;
2260 }
fb73857a 2261 return s;
2262 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2263 forbid_setid("-I");
fb73857a 2264 ++s;
2265 while (*s && isSPACE(*s))
2266 ++s;
2267 if (*s) {
774d564b 2268 char *e, *p;
0df16ed7
GS		 2269 p = s;
2270 /* ignore trailing spaces (possibly followed by other switches) */
2271 do {
2272 for (e = p; *e && !isSPACE(*e); e++) ;
2273 p = e;
2274 while (isSPACE(*p))
2275 p++;
2276 } while (*p && *p != '-');
2277 e = savepvn(s, e-s);
9c8a64f0 2278 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2279 Safefree(e);
2280 s = p;
2281 if (*s == '-')
2282 s++;
79072805
LW		 2283 }
2284 else
a67e862a 2285 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2286 return s;
79072805 2287 case 'l':
3280af22 2288 PL_minus_l = TRUE;
79072805 2289 s++;
7889fe52
NIS		 2290 if (PL_ors_sv) {
2291 SvREFCNT_dec(PL_ors_sv);
2292 PL_ors_sv = Nullsv;
2293 }
79072805 2294 if (isDIGIT(*s)) {
7889fe52 2295 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2296 numlen = 0; /* disallow underscores */
7889fe52 2297 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2298 s += numlen;
2299 }
2300 else {
3280af22 2301 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2302 PL_ors_sv = newSVpvn("\n\n",2);
2303 }
2304 else {
2305 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2306 }
79072805
LW		 2307 }
2308 return s;
1a30305b 2309 case 'M':
bbce6d69 2310 forbid_setid("-M"); /* XXX ? */
1a30305b 2311 /* FALL THROUGH */
2312 case 'm':
bbce6d69 2313 forbid_setid("-m"); /* XXX ? */
1a30305b 2314 if (*++s) {
a5f75d66 2315 char *start;
11343788 2316 SV *sv;
a5f75d66
AD		 2317 char *use = "use ";
2318 /* -M-foo == 'no foo' */
2319 if (*s == '-') { use = "no "; ++s; }
11343788 2320 sv = newSVpv(use,0);
a5f75d66 2321 start = s;
1a30305b 2322 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2323 while(isALNUM(*s) || *s==':') ++s;
2324 if (*s != '=') {
11343788 2325 sv_catpv(sv, start);
c07a80fd 2326 if (*(start-1) == 'm') {
2327 if (*s != '\0')
cea2e8a9 2328 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2329 sv_catpv( sv, " ()");
c07a80fd 2330 }
2331 } else {
6df41af2 2332 if (s == start)
be98fb35
GS		 2333 Perl_croak(aTHX_ "Module name required with -%c option",
2334 s[-1]);
11343788
MB		 2335 sv_catpvn(sv, start, s-start);
2336 sv_catpv(sv, " split(/,/,q{");
2337 sv_catpv(sv, ++s);
2338 sv_catpv(sv, "})");
c07a80fd 2339 }
1a30305b 2340 s += strlen(s);
5c831c24 2341 if (!PL_preambleav)
3280af22
NIS		 2342 PL_preambleav = newAV();
2343 av_push(PL_preambleav, sv);
1a30305b 2344 }
2345 else
cea2e8a9 2346 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2347 return s;
79072805 2348 case 'n':
3280af22 2349 PL_minus_n = TRUE;
79072805
LW		 2350 s++;
2351 return s;
2352 case 'p':
3280af22 2353 PL_minus_p = TRUE;
79072805
LW		 2354 s++;
2355 return s;
2356 case 's':
bbce6d69 2357 forbid_setid("-s");
3280af22 2358 PL_doswitches = TRUE;
79072805
LW		 2359 s++;
2360 return s;
463ee0b2 2361 case 'T':
3280af22 2362 if (!PL_tainting)
cea2e8a9 2363 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2364 s++;
2365 return s;
79072805 2366 case 'u':
bf4acbe4
GS		 2367#ifdef MACOS_TRADITIONAL
2368 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2369#endif
3280af22 2370 PL_do_undump = TRUE;
79072805
LW		 2371 s++;
2372 return s;
2373 case 'U':
3280af22 2374 PL_unsafe = TRUE;
79072805
LW		 2375 s++;
2376 return s;
2377 case 'v':
8e9464f1 2378#if !defined(DGUX)
b0e47665 2379 PerlIO_printf(PerlIO_stdout(),
d2560b70 2380 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2381 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2382#else /* DGUX */
2383/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2384 PerlIO_printf(PerlIO_stdout(),
2385 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2386 PerlIO_printf(PerlIO_stdout(),
2387 Perl_form(aTHX_ " built under %s at %s %s\n",
2388 OSNAME, __DATE__, __TIME__));
2389 PerlIO_printf(PerlIO_stdout(),
2390 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2391 OSVERS));
8e9464f1
JH		 2392#endif /* !DGUX */
2393
fb73857a 2394#if defined(LOCAL_PATCH_COUNT)
2395 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2396 PerlIO_printf(PerlIO_stdout(),
2397 "\n(with %d registered patch%s, "
2398 "see perl -V for more detail)",
2399 (int)LOCAL_PATCH_COUNT,
2400 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2401#endif
1a30305b 2402
b0e47665 2403 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2404 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2405#ifdef MACOS_TRADITIONAL
2406 PerlIO_printf(PerlIO_stdout(),
084592ab 2407 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2408#endif
79072805 2409#ifdef MSDOS
b0e47665
GS		 2410 PerlIO_printf(PerlIO_stdout(),
2411 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2412#endif
2413#ifdef DJGPP
b0e47665
GS		 2414 PerlIO_printf(PerlIO_stdout(),
2415 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2416 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2417#endif
79072805 2418#ifdef OS2
b0e47665
GS		 2419 PerlIO_printf(PerlIO_stdout(),
2420 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2421 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2422#endif
79072805 2423#ifdef atarist
b0e47665
GS		 2424 PerlIO_printf(PerlIO_stdout(),
2425 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2426#endif
a3f9223b 2427#ifdef __BEOS__
b0e47665
GS		 2428 PerlIO_printf(PerlIO_stdout(),
2429 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2430#endif
1d84e8df 2431#ifdef MPE
b0e47665 2432 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2433 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2434#endif
9d116dd7 2435#ifdef OEMVS
b0e47665
GS		 2436 PerlIO_printf(PerlIO_stdout(),
2437 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2438#endif
495c5fdc 2439#ifdef __VOS__
b0e47665
GS		 2440 PerlIO_printf(PerlIO_stdout(),
2441 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2442#endif
092bebab 2443#ifdef __OPEN_VM
b0e47665
GS		 2444 PerlIO_printf(PerlIO_stdout(),
2445 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2446#endif
a1a0e61e 2447#ifdef POSIX_BC
b0e47665
GS		 2448 PerlIO_printf(PerlIO_stdout(),
2449 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2450#endif
61ae2fbf 2451#ifdef __MINT__
b0e47665
GS		 2452 PerlIO_printf(PerlIO_stdout(),
2453 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2454#endif
f83d2536 2455#ifdef EPOC
b0e47665
GS		 2456 PerlIO_printf(PerlIO_stdout(),
2457 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2458#endif
e1caacb4
JH		 2459#ifdef UNDER_CE
2460 printf("WINCE port by Rainer Keuchel, 2001\n");
2461 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2462 wce_hitreturn();
2463#endif
baed7233
DL		 2464#ifdef BINARY_BUILD_NOTICE
2465 BINARY_BUILD_NOTICE;
2466#endif
b0e47665
GS		 2467 PerlIO_printf(PerlIO_stdout(),
2468 "\n\
79072805 2469Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2470GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2471Complete documentation for Perl, including FAQ lists, should be found on\n\
2472this system using `man perl' or `perldoc perl'. If you have access to the\n\
2473Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2474 PerlProc_exit(0);
79072805 2475 case 'w':
599cee73 2476 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2477 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2478 s++;
2479 return s;
2480 case 'W':
ac27b0f5 2481 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2482 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2483 s++;
2484 return s;
2485 case 'X':
ac27b0f5 2486 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2487 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2488 s++;
2489 return s;
a0d0e21e 2490 case '*':
79072805
LW		 2491 case ' ':
2492 if (s[1] == '-') /* Additional switches on #! line. */
2493 return s+2;
2494 break;
a0d0e21e 2495 case '-':
79072805 2496 case 0:
51882d45 2497#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2498 case '\r':
2499#endif
79072805
LW		 2500 case '\n':
2501 case '\t':
2502 break;
aa689395 2503#ifdef ALTERNATE_SHEBANG
2504 case 'S': /* OS/2 needs -S on "extproc" line. */
2505 break;
2506#endif
a0d0e21e 2507 case 'P':
3280af22 2508 if (PL_preprocess)
a0d0e21e
LW		 2509 return s+1;
2510 /* FALL THROUGH */
79072805 2511 default:
cea2e8a9 2512 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2513 }
2514 return Nullch;
2515}
2516
2517/* compliments of Tom Christiansen */
2518
2519/* unexec() can be found in the Gnu emacs distribution */
ee580363 2520/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2521
2522void
864dbfa3 2523Perl_my_unexec(pTHX)
79072805
LW		 2524{
2525#ifdef UNEXEC
46fc3d4c 2526 SV* prog;
2527 SV* file;
ee580363 2528 int status = 1;
79072805
LW		 2529 extern int etext;
2530
ee580363 2531 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2532 sv_catpv(prog, "/perl");
6b88bc9c 2533 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2534 sv_catpv(file, ".perldump");
79072805 2535
ee580363
GS		 2536 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2537 /* unexec prints msg to stderr in case of failure */
6ad3d225 2538 PerlProc_exit(status);
79072805 2539#else
a5f75d66
AD		 2540# ifdef VMS
2541# include <lib$routines.h>
2542 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2543# else
79072805 2544 ABORT(); /* for use with undump */
aa689395 2545# endif
a5f75d66 2546#endif
79072805
LW		 2547}
2548
cb68f92d
GS		 2549/* initialize curinterp */
2550STATIC void
cea2e8a9 2551S_init_interp(pTHX)
cb68f92d
GS		 2552{
2553
066ef5b5 2554#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2555#define I_REINIT \
6b88bc9c
GS		 2556 STMT_START { \
2557 PL_chopset = " \n-"; \
2558 PL_copline = NOLINE; \
2559 PL_curcop = &PL_compiling;\
2560 PL_curcopdb = NULL; \
2561 PL_dbargs = 0; \
3967c732 2562 PL_dumpindent = 4; \
6b88bc9c
GS		 2563 PL_laststatval = -1; \
2564 PL_laststype = OP_STAT; \
2565 PL_maxscream = -1; \
2566 PL_maxsysfd = MAXSYSFD; \
2567 PL_statname = Nullsv; \
2568 PL_tmps_floor = -1; \
2569 PL_tmps_ix = -1; \
2570 PL_op_mask = NULL; \
6b88bc9c
GS		 2571 PL_laststatval = -1; \
2572 PL_laststype = OP_STAT; \
2573 PL_mess_sv = Nullsv; \
2574 PL_splitstr = " "; \
2575 PL_generation = 100; \
2576 PL_exitlist = NULL; \
2577 PL_exitlistlen = 0; \
2578 PL_regindent = 0; \
2579 PL_in_clean_objs = FALSE; \
2580 PL_in_clean_all = FALSE; \
2581 PL_profiledata = NULL; \
2582 PL_rsfp = Nullfp; \
2583 PL_rsfp_filters = Nullav; \
24d3c518 2584 PL_dirty = FALSE; \
cb68f92d 2585 } STMT_END
9666903d 2586 I_REINIT;
066ef5b5
GS		 2587#else
2588# ifdef MULTIPLICITY
2589# define PERLVAR(var,type)
51371543 2590# define PERLVARA(var,n,type)
cea2e8a9 2591# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2592# if defined(USE_THREADS)
2593# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2594# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2595# else /* !USE_THREADS */
2596# define PERLVARI(var,type,init) aTHX->var = init;
2597# define PERLVARIC(var,type,init) aTHX->var = init;
2598# endif /* USE_THREADS */
cea2e8a9 2599# else
c5be433b
GS		 2600# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2601# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2602# endif
066ef5b5
GS		 2603# include "intrpvar.h"
2604# ifndef USE_THREADS
2605# include "thrdvar.h"
2606# endif
2607# undef PERLVAR
51371543 2608# undef PERLVARA
066ef5b5
GS		 2609# undef PERLVARI
2610# undef PERLVARIC
3967c732 2611# else
066ef5b5 2612# define PERLVAR(var,type)
51371543 2613# define PERLVARA(var,n,type)
533c011a
NIS		 2614# define PERLVARI(var,type,init) PL_##var = init;
2615# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2616# include "intrpvar.h"
2617# ifndef USE_THREADS
2618# include "thrdvar.h"
2619# endif
2620# undef PERLVAR
51371543 2621# undef PERLVARA
066ef5b5
GS		 2622# undef PERLVARI
2623# undef PERLVARIC
2624# endif
cb68f92d
GS		 2625#endif
2626
cb68f92d
GS		 2627}
2628
76e3520e 2629STATIC void
cea2e8a9 2630S_init_main_stash(pTHX)
79072805 2631{
463ee0b2 2632 GV *gv;
6e72f9df 2633
2634 /* Note that strtab is a rather special HV. Assumptions are made
2635 about not iterating on it, and not adding tie magic to it.
2636 It is properly deallocated in perl_destruct() */
3280af22 2637 PL_strtab = newHV();
5f08fbcd
GS		 2638#ifdef USE_THREADS
2639 MUTEX_INIT(&PL_strtab_mutex);
2640#endif
3280af22
NIS		 2641 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2642 hv_ksplit(PL_strtab, 512);
ac27b0f5 2643
3280af22 2644 PL_curstash = PL_defstash = newHV();
79cb57f6 2645 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2646 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2647 SvREFCNT_dec(GvHV(gv));
3280af22 2648 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2649 SvREADONLY_on(gv);
3280af22
NIS		 2650 HvNAME(PL_defstash) = savepv("main");
2651 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2652 GvMULTI_on(PL_incgv);
2653 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2654 GvMULTI_on(PL_hintgv);
2655 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2656 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2657 GvMULTI_on(PL_errgv);
2658 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2659 GvMULTI_on(PL_replgv);
cea2e8a9 2660 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2661 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2662 sv_setpvn(ERRSV, "", 0);
3280af22 2663 PL_curstash = PL_defstash;
11faa288 2664 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2665 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2666 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2667 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2668 /* We must init $/ before switches are processed. */
864dbfa3 2669 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2670}
2671
76e3520e 2672STATIC void
cea2e8a9 2673S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2674{
6c4ab083 2675 *fdscript = -1;
79072805 2676
3280af22
NIS		 2677 if (PL_e_script) {
2678 PL_origfilename = savepv("-e");
96436eeb 2679 }
6c4ab083
GS		 2680 else {
2681 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2682 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2683
2684 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2685 char *s = scriptname + 8;
2686 *fdscript = atoi(s);
2687 while (isDIGIT(*s))
2688 s++;
2689 if (*s) {
2690 scriptname = savepv(s + 1);
3280af22
NIS		 2691 Safefree(PL_origfilename);
2692 PL_origfilename = scriptname;
6c4ab083
GS		 2693 }
2694 }
2695 }
2696
f4dd75d9
GS		 2697#ifdef USE_ITHREADS
2698 Safefree(CopFILE(PL_curcop));
2699#else
2700 SvREFCNT_dec(CopFILEGV(PL_curcop));
2701#endif
57843af0 2702 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2703 if (strEQ(PL_origfilename,"-"))
79072805 2704 scriptname = "";
01f988be 2705 if (*fdscript >= 0) {
3280af22 2706 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2707#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2708 if (PL_rsfp)
2709 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2710#endif
2711 }
3280af22 2712 else if (PL_preprocess) {
46fc3d4c 2713 char *cpp_cfg = CPPSTDIN;
79cb57f6 2714 SV *cpp = newSVpvn("",0);
46fc3d4c 2715 SV *cmd = NEWSV(0,0);
2716
2717 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2718 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2719 sv_catpv(cpp, cpp_cfg);
79072805 2720
0df16ed7 2721 sv_catpvn(sv, "-I", 2);
fed7345c 2722 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2723
14953ddc
MB		 2724 DEBUG_P(PerlIO_printf(Perl_debug_log,
2725 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2726 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2727#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2728 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2729sed %s -e \"/^[^#]/b\" \
2730 -e \"/^#[ ]*include[ ]/b\" \
2731 -e \"/^#[ ]*define[ ]/b\" \
2732 -e \"/^#[ ]*if[ ]/b\" \
2733 -e \"/^#[ ]*ifdef[ ]/b\" \
2734 -e \"/^#[ ]*ifndef[ ]/b\" \
2735 -e \"/^#[ ]*else/b\" \
2736 -e \"/^#[ ]*elif[ ]/b\" \
2737 -e \"/^#[ ]*undef[ ]/b\" \
2738 -e \"/^#[ ]*endif/b\" \
2739 -e \"s/^#.*//\" \
894356b3 2740 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2741 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2742#else
092bebab 2743# ifdef __OPEN_VM
cea2e8a9 2744 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2745%s %s -e '/^[^#]/b' \
2746 -e '/^#[ ]*include[ ]/b' \
2747 -e '/^#[ ]*define[ ]/b' \
2748 -e '/^#[ ]*if[ ]/b' \
2749 -e '/^#[ ]*ifdef[ ]/b' \
2750 -e '/^#[ ]*ifndef[ ]/b' \
2751 -e '/^#[ ]*else/b' \
2752 -e '/^#[ ]*elif[ ]/b' \
2753 -e '/^#[ ]*undef[ ]/b' \
2754 -e '/^#[ ]*endif/b' \
2755 -e 's/^[ ]*#.*//' \
894356b3 2756 %s | %"SVf" %"SVf" %s",
092bebab 2757# else
cea2e8a9 2758 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2759%s %s -e '/^[^#]/b' \
2760 -e '/^#[ ]*include[ ]/b' \
2761 -e '/^#[ ]*define[ ]/b' \
2762 -e '/^#[ ]*if[ ]/b' \
2763 -e '/^#[ ]*ifdef[ ]/b' \
2764 -e '/^#[ ]*ifndef[ ]/b' \
2765 -e '/^#[ ]*else/b' \
2766 -e '/^#[ ]*elif[ ]/b' \
2767 -e '/^#[ ]*undef[ ]/b' \
2768 -e '/^#[ ]*endif/b' \
2769 -e 's/^[ ]*#.*//' \
894356b3 2770 %s | %"SVf" -C %"SVf" %s",
092bebab 2771# endif
79072805
LW		 2772#ifdef LOC_SED
2773 LOC_SED,
2774#else
2775 "sed",
2776#endif
3280af22 2777 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2778#endif
46fc3d4c 2779 scriptname, cpp, sv, CPPMINUS);
3280af22 2780 PL_doextract = FALSE;
79072805 2781#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2782 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2783#ifdef HAS_SETEUID
b28d0864 2784 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2785#else
2786#ifdef HAS_SETREUID
b28d0864 2787 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2788#else
2789#ifdef HAS_SETRESUID
b28d0864 2790 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2791#else
b28d0864 2792 PerlProc_setuid(PL_uid);
79072805
LW		 2793#endif
2794#endif
85e6fe83 2795#endif
b28d0864 2796 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2797 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2798 }
2799#endif /* IAMSUID */
3280af22 2800 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2801 SvREFCNT_dec(cmd);
2802 SvREFCNT_dec(cpp);
79072805
LW		 2803 }
2804 else if (!*scriptname) {
bbce6d69 2805 forbid_setid("program input from stdin");
3280af22 2806 PL_rsfp = PerlIO_stdin();
79072805 2807 }
96436eeb 2808 else {
3280af22 2809 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2810#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2811 if (PL_rsfp)
2812 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2813#endif
2814 }
3280af22 2815 if (!PL_rsfp) {
13281fa4 2816#ifdef DOSUID
a687059c 2817#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2818 if (PL_euid &&
cc49e20b 2819 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2820 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2821 {
46fc3d4c 2822 /* try again */
a7cb1f99 2823 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2824 (int)PERL_REVISION, (int)PERL_VERSION,
2825 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2826 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2827 }
2828#endif
2829#endif
584d69ec
JH		 2830#ifdef IAMSUID
2831 errno = EPERM;
2832 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2833 Strerror(errno));
2834#else
cea2e8a9 2835 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2836 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2837#endif
13281fa4 2838 }
79072805 2839}
8d063cd8 2840
7b89560d
JH		 2841/* Mention
2842 * I_SYSSTATVFS HAS_FSTATVFS
2843 * I_SYSMOUNT
c890dc6c 2844 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2845 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2846 * here so that metaconfig picks them up. */
2847
104d25b7 2848#ifdef IAMSUID
864dbfa3 2849STATIC int
e688b231 2850S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2851{
0545a864
JH		 2852 int check_okay = 0; /* able to do all the required sys/libcalls */
2853 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2854/*
ad27e871 2855 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2856 * fstatvfs() is UNIX98.
0545a864 2857 * fstatfs() is 4.3 BSD.
ad27e871 2858 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2859 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2860 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2861 */
2862
6439433f
JH		 2863#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2864
2865# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2866 defined(HAS_FSTATVFS)
2867# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2868 struct statvfs stfs;
6439433f 2869
104d25b7
JH		 2870 check_okay = fstatvfs(fd, &stfs) == 0;
2871 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2872# endif /* fstatvfs */
ac27b0f5 2873
6439433f
JH		 2874# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2875 defined(PERL_MOUNT_NOSUID) && \
2876 defined(HAS_FSTATFS) && \
2877 defined(HAS_STRUCT_STATFS) && \
2878 defined(HAS_STRUCT_STATFS_F_FLAGS)
2879# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2880 struct statfs stfs;
6439433f 2881
104d25b7 2882 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2883 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2884# endif /* fstatfs */
2885
2886# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2887 defined(PERL_MOUNT_NOSUID) && \
2888 defined(HAS_FSTAT) && \
2889 defined(HAS_USTAT) && \
2890 defined(HAS_GETMNT) && \
2891 defined(HAS_STRUCT_FS_DATA) && \
2892 defined(NOSTAT_ONE)
2893# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2894 struct stat fdst;
6439433f 2895
0545a864 2896 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2897 struct ustat us;
2898 if (ustat(fdst.st_dev, &us) == 0) {
2899 struct fs_data fsd;
2900 /* NOSTAT_ONE here because we're not examining fields which
2901 * vary between that case and STAT_ONE. */
ad27e871 2902 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2903 size_t cmplen = sizeof(us.f_fname);
2904 if (sizeof(fsd.fd_req.path) < cmplen)
2905 cmplen = sizeof(fsd.fd_req.path);
2906 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2907 fdst.st_dev == fsd.fd_req.dev) {
2908 check_okay = 1;
2909 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2910 }
2911 }
2912 }
2913 }
0545a864 2914 }
6439433f
JH		 2915# endif /* fstat+ustat+getmnt */
2916
2917# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2918 defined(HAS_GETMNTENT) && \
2919 defined(HAS_HASMNTOPT) && \
2920 defined(MNTOPT_NOSUID)
2921# define FD_ON_NOSUID_CHECK_OKAY
2922 FILE *mtab = fopen("/etc/mtab", "r");
2923 struct mntent *entry;
2924 struct stat stb, fsb;
104d25b7
JH		 2925
2926 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2927 while (entry = getmntent(mtab)) {
2928 if (stat(entry->mnt_dir, &fsb) == 0
2929 && fsb.st_dev == stb.st_dev)
2930 {
2931 /* found the filesystem */
2932 check_okay = 1;
2933 if (hasmntopt(entry, MNTOPT_NOSUID))
2934 on_nosuid = 1;
2935 break;
2936 } /* A single fs may well fail its stat(). */
2937 }
104d25b7
JH		 2938 }
2939 if (mtab)
6439433f
JH		 2940 fclose(mtab);
2941# endif /* getmntent+hasmntopt */
0545a864 2942
ac27b0f5 2943 if (!check_okay)
0545a864 2944 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2945 return on_nosuid;
2946}
2947#endif /* IAMSUID */
2948
76e3520e 2949STATIC void
cea2e8a9 2950S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2951{
155aba94 2952#ifdef IAMSUID
96436eeb 2953 int which;
155aba94 2954#endif
96436eeb 2955
13281fa4
LW		 2956 /* do we need to emulate setuid on scripts? */
2957
2958 /* This code is for those BSD systems that have setuid #! scripts disabled
2959 * in the kernel because of a security problem. Merely defining DOSUID
2960 * in perl will not fix that problem, but if you have disabled setuid
2961 * scripts in the kernel, this will attempt to emulate setuid and setgid
2962 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2963 * root version must be called suidperl or sperlN.NNN. If regular perl
2964 * discovers that it has opened a setuid script, it calls suidperl with
2965 * the same argv that it had. If suidperl finds that the script it has
2966 * just opened is NOT setuid root, it sets the effective uid back to the
2967 * uid. We don't just make perl setuid root because that loses the
2968 * effective uid we had before invoking perl, if it was different from the
2969 * uid.
13281fa4
LW		 2970 *
2971 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2972 * be defined in suidperl only. suidperl must be setuid root. The
2973 * Configure script will set this up for you if you want it.
2974 */
a687059c 2975
13281fa4 2976#ifdef DOSUID
6e72f9df 2977 char *s, *s2;
a0d0e21e 2978
b28d0864 2979 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2980 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2981 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2982 I32 len;
2d8e6c8d 2983 STRLEN n_a;
13281fa4 2984
a687059c 2985#ifdef IAMSUID
fe14fcc3 2986#ifndef HAS_SETREUID
a687059c
LW		 2987 /* On this access check to make sure the directories are readable,
2988 * there is actually a small window that the user could use to make
2989 * filename point to an accessible directory. So there is a faint
2990 * chance that someone could execute a setuid script down in a
2991 * non-accessible directory. I don't know what to do about that.
2992 * But I don't think it's too important. The manual lies when
2993 * it says access() is useful in setuid programs.
2994 */
cc49e20b 2995 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2996 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2997#else
2998 /* If we can swap euid and uid, then we can determine access rights
2999 * with a simple stat of the file, and then compare device and
3000 * inode to make sure we did stat() on the same file we opened.
3001 * Then we just have to make sure he or she can execute it.
3002 */
3003 {
3004 struct stat tmpstatbuf;
3005
85e6fe83
LW		 3006 if (
3007#ifdef HAS_SETREUID
b28d0864 3008 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3009#else
3010# if HAS_SETRESUID
b28d0864 3011 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3012# endif
85e6fe83 3013#endif
b28d0864 3014 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3015 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3016 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3017 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3018#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3019 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3020 Perl_croak(aTHX_ "Permission denied");
104d25b7 3021#endif
b28d0864
NIS		 3022 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3023 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3024 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3025 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3026 }
85e6fe83
LW		 3027 if (
3028#ifdef HAS_SETREUID
b28d0864 3029 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3030#else
3031# if defined(HAS_SETRESUID)
b28d0864 3032 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3033# endif
85e6fe83 3034#endif
b28d0864 3035 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3036 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3037 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3038 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3039 }
fe14fcc3 3040#endif /* HAS_SETREUID */
a687059c
LW		 3041#endif /* IAMSUID */
3042
b28d0864 3043 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3044 Perl_croak(aTHX_ "Permission denied");
b28d0864 3045 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3046 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3047 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3048 CopLINE_inc(PL_curcop);
6b88bc9c 3049 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3050 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3051 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3052 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3053 if (*s == ' ') s++;
45d8adaa 3054 while (!isSPACE(*s)) s++;
2d8e6c8d 3055 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3056 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3057 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3058 Perl_croak(aTHX_ "Not a perl script");
a687059c 3059 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3060 /*
3061 * #! arg must be what we saw above. They can invoke it by
3062 * mentioning suidperl explicitly, but they may not add any strange
3063 * arguments beyond what #! says if they do invoke suidperl that way.
3064 */
3065 len = strlen(validarg);
3066 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3067 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3068 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3069
3070#ifndef IAMSUID
b28d0864
NIS		 3071 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3072 PL_euid == PL_statbuf.st_uid)
3073 if (!PL_do_undump)
cea2e8a9 3074 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3075FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3076#endif /* IAMSUID */
13281fa4 3077
b28d0864
NIS		 3078 if (PL_euid) { /* oops, we're not the setuid root perl */
3079 (void)PerlIO_close(PL_rsfp);
13281fa4 3080#ifndef IAMSUID
46fc3d4c 3081 /* try again */
a7cb1f99 3082 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3083 (int)PERL_REVISION, (int)PERL_VERSION,
3084 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3085#endif
cea2e8a9 3086 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3087 }
3088
b28d0864 3089 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3090#ifdef HAS_SETEGID
b28d0864 3091 (void)setegid(PL_statbuf.st_gid);
a687059c 3092#else
fe14fcc3 3093#ifdef HAS_SETREGID
b28d0864 3094 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3095#else
3096#ifdef HAS_SETRESGID
b28d0864 3097 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3098#else
b28d0864 3099 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3100#endif
3101#endif
85e6fe83 3102#endif
b28d0864 3103 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3104 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3105 }
b28d0864
NIS		 3106 if (PL_statbuf.st_mode & S_ISUID) {
3107 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3108#ifdef HAS_SETEUID
b28d0864 3109 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3110#else
fe14fcc3 3111#ifdef HAS_SETREUID
b28d0864 3112 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3113#else
3114#ifdef HAS_SETRESUID
b28d0864 3115 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3116#else
b28d0864 3117 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3118#endif
3119#endif
85e6fe83 3120#endif
b28d0864 3121 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3122 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3123 }
b28d0864 3124 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3125#ifdef HAS_SETEUID
b28d0864 3126 (void)seteuid((Uid_t)PL_uid);
a687059c 3127#else
fe14fcc3 3128#ifdef HAS_SETREUID
b28d0864 3129 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3130#else
85e6fe83 3131#ifdef HAS_SETRESUID
b28d0864 3132 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3133#else
b28d0864 3134 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3135#endif
a687059c
LW		 3136#endif
3137#endif
b28d0864 3138 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3139 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3140 }
748a9306 3141 init_ids();
b28d0864 3142 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3143 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3144 }
3145#ifdef IAMSUID
6b88bc9c 3146 else if (PL_preprocess)
cea2e8a9 3147 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3148 else if (fdscript >= 0)
cea2e8a9 3149 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3150 else
cea2e8a9 3151 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3152
3153 /* We absolutely must clear out any saved ids here, so we */
3154 /* exec the real perl, substituting fd script for scriptname. */
3155 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3156 PerlIO_rewind(PL_rsfp);
3157 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3158 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3159 if (!PL_origargv[which])
cea2e8a9
GS		 3160 Perl_croak(aTHX_ "Permission denied");
3161 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3162 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3163#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3164 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3165#endif
a7cb1f99 3166 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3167 (int)PERL_REVISION, (int)PERL_VERSION,
3168 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3169 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3170#endif /* IAMSUID */
a687059c 3171#else /* !DOSUID */
3280af22 3172 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3173#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3174 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3175 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3176 ||
b28d0864 3177 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3178 )
b28d0864 3179 if (!PL_do_undump)
cea2e8a9 3180 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3181FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3182#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3183 /* not set-id, must be wrapped */
a687059c 3184 }
13281fa4 3185#endif /* DOSUID */
79072805 3186}
13281fa4 3187
76e3520e 3188STATIC void
cea2e8a9 3189S_find_beginning(pTHX)
79072805 3190{
6e72f9df 3191 register char *s, *s2;
33b78306
LW		 3192
3193 /* skip forward in input to the real script? */
3194
bbce6d69 3195 forbid_setid("-x");
bf4acbe4 3196#ifdef MACOS_TRADITIONAL
084592ab 3197 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3198
bf4acbe4
GS		 3199 while (PL_doextract || gMacPerl_AlwaysExtract) {
3200 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3201 if (!gMacPerl_AlwaysExtract)
3202 Perl_croak(aTHX_ "No Perl script found in input\n");
3203
3204 if (PL_doextract) /* require explicit override ? */
3205 if (!OverrideExtract(PL_origfilename))
3206 Perl_croak(aTHX_ "User aborted script\n");
3207 else
3208 PL_doextract = FALSE;
3209
3210 /* Pater peccavi, file does not have #! */
3211 PerlIO_rewind(PL_rsfp);
ac27b0f5 3212
bf4acbe4
GS		 3213 break;
3214 }
3215#else
3280af22
NIS		 3216 while (PL_doextract) {
3217 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3218 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3219#endif
4f0c37ba
IZ		 3220 s2 = s;
3221 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3222 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3223 PL_doextract = FALSE;
6e72f9df 3224 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3225 s2 = s;
3226 while (*s == ' ' || *s == '\t') s++;
3227 if (*s++ == '-') {
3228 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3229 if (strnEQ(s2-4,"perl",4))
3230 /*SUPPRESS 530*/
155aba94
GS		 3231 while ((s = moreswitches(s)))
3232 ;
33b78306 3233 }
95e8664e
CN		 3234#ifdef MACOS_TRADITIONAL
3235 break;
3236#endif
83025b21
LW		 3237 }
3238 }
3239}
3240
afe37c7d 3241
76e3520e 3242STATIC void
cea2e8a9 3243S_init_ids(pTHX)
352d5a3a 3244{
d8eceb89
JH		 3245 PL_uid = PerlProc_getuid();
3246 PL_euid = PerlProc_geteuid();
3247 PL_gid = PerlProc_getgid();
3248 PL_egid = PerlProc_getegid();
748a9306 3249#ifdef VMS
b28d0864
NIS		 3250 PL_uid |= PL_gid << 16;
3251 PL_euid |= PL_egid << 16;
748a9306 3252#endif
3280af22 3253 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3254}
79072805 3255
76e3520e 3256STATIC void
cea2e8a9 3257S_forbid_setid(pTHX_ char *s)
bbce6d69 3258{
3280af22 3259 if (PL_euid != PL_uid)
cea2e8a9 3260 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3261 if (PL_egid != PL_gid)
cea2e8a9 3262 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3263}
3264
1ee4443e
IZ		 3265void
3266Perl_init_debugger(pTHX)
748a9306 3267{
1ee4443e
IZ		 3268 HV *ostash = PL_curstash;
3269
3280af22
NIS		 3270 PL_curstash = PL_debstash;
3271 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3272 AvREAL_off(PL_dbargs);
3273 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3274 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3275 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3276 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3277 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3278 sv_setiv(PL_DBsingle, 0);
3280af22 3279 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3280 sv_setiv(PL_DBtrace, 0);
3280af22 3281 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3282 sv_setiv(PL_DBsignal, 0);
1ee4443e 3283 PL_curstash = ostash;
352d5a3a
LW		 3284}
3285
2ce36478
SM		 3286#ifndef STRESS_REALLOC
3287#define REASONABLE(size) (size)
3288#else
3289#define REASONABLE(size) (1) /* unreasonable */
3290#endif
3291
11343788 3292void
cea2e8a9 3293Perl_init_stacks(pTHX)
79072805 3294{
e336de0d 3295 /* start with 128-item stack and 8K cxstack */
3280af22 3296 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3297 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3298 PL_curstackinfo->si_type = PERLSI_MAIN;
3299 PL_curstack = PL_curstackinfo->si_stack;
3300 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3301
3280af22
NIS		 3302 PL_stack_base = AvARRAY(PL_curstack);
3303 PL_stack_sp = PL_stack_base;
3304 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3305
3280af22
NIS		 3306 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3307 PL_tmps_floor = -1;
3308 PL_tmps_ix = -1;
3309 PL_tmps_max = REASONABLE(128);
8990e307 3310
3280af22
NIS		 3311 New(54,PL_markstack,REASONABLE(32),I32);
3312 PL_markstack_ptr = PL_markstack;
3313 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3314
ce2f7c3b 3315 SET_MARK_OFFSET;
e336de0d 3316
3280af22
NIS		 3317 New(54,PL_scopestack,REASONABLE(32),I32);
3318 PL_scopestack_ix = 0;
3319 PL_scopestack_max = REASONABLE(32);
79072805 3320
3280af22
NIS		 3321 New(54,PL_savestack,REASONABLE(128),ANY);
3322 PL_savestack_ix = 0;
3323 PL_savestack_max = REASONABLE(128);
79072805 3324
3280af22
NIS		 3325 New(54,PL_retstack,REASONABLE(16),OP*);
3326 PL_retstack_ix = 0;
3327 PL_retstack_max = REASONABLE(16);
378cc40b 3328}
33b78306 3329
2ce36478
SM		 3330#undef REASONABLE
3331
76e3520e 3332STATIC void
cea2e8a9 3333S_nuke_stacks(pTHX)
6e72f9df 3334{
3280af22
NIS		 3335 while (PL_curstackinfo->si_next)
3336 PL_curstackinfo = PL_curstackinfo->si_next;
3337 while (PL_curstackinfo) {
3338 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3339 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3340 Safefree(PL_curstackinfo->si_cxstack);
3341 Safefree(PL_curstackinfo);
3342 PL_curstackinfo = p;
e336de0d 3343 }
3280af22
NIS		 3344 Safefree(PL_tmps_stack);
3345 Safefree(PL_markstack);
3346 Safefree(PL_scopestack);
3347 Safefree(PL_savestack);
3348 Safefree(PL_retstack);
378cc40b 3349}
33b78306 3350
76e3520e 3351#ifndef PERL_OBJECT
760ac839 3352static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3353#endif
7aa04957 3354
76e3520e 3355STATIC void
cea2e8a9 3356S_init_lexer(pTHX)
8990e307 3357{
76e3520e
GS		 3358#ifdef PERL_OBJECT
3359 PerlIO *tmpfp;
3360#endif
3280af22
NIS		 3361 tmpfp = PL_rsfp;
3362 PL_rsfp = Nullfp;
3363 lex_start(PL_linestr);
3364 PL_rsfp = tmpfp;
79cb57f6 3365 PL_subname = newSVpvn("main",4);
8990e307
LW		 3366}
3367
76e3520e 3368STATIC void
cea2e8a9 3369S_init_predump_symbols(pTHX)
45d8adaa 3370{
93a17b20 3371 GV *tmpgv;
af8c498a 3372 IO *io;
79072805 3373
864dbfa3 3374 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3375 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3376 GvMULTI_on(PL_stdingv);
af8c498a 3377 io = GvIOp(PL_stdingv);
a04651f4 3378 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3379 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3380 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3381 GvMULTI_on(tmpgv);
af8c498a 3382 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3383
85e6fe83 3384 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3385 GvMULTI_on(tmpgv);
af8c498a 3386 io = GvIOp(tmpgv);
a04651f4 3387 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3388 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3389 setdefout(tmpgv);
adbc6bb1 3390 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3391 GvMULTI_on(tmpgv);
af8c498a 3392 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3393
bf49b057
GS		 3394 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3395 GvMULTI_on(PL_stderrgv);
3396 io = GvIOp(PL_stderrgv);
a04651f4 3397 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3398 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3399 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3400 GvMULTI_on(tmpgv);
af8c498a 3401 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3402
3280af22 3403 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3404
bf4acbe4
GS		 3405 if (PL_osname)
3406 Safefree(PL_osname);
3407 PL_osname = savepv(OSNAME);
79072805 3408}
33b78306 3409
76e3520e 3410STATIC void
cea2e8a9 3411S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3412{
79072805
LW		 3413 char *s;
3414 SV *sv;
3415 GV* tmpgv;
9cbac4c7 3416#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3417 char **dup_env_base = 0;
103a7189 3418 int dup_env_count = 0;
9cbac4c7 3419#endif
fe14fcc3 3420
79072805 3421 argc--,argv++; /* skip name of script */
3280af22 3422 if (PL_doswitches) {
79072805
LW		 3423 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3424 if (!argv[0][1])
3425 break;
379d538a 3426 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3427 argc--,argv++;
3428 break;
3429 }
155aba94 3430 if ((s = strchr(argv[0], '='))) {
79072805 3431 *s++ = '\0';
85e6fe83 3432 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3433 }
3434 else
85e6fe83 3435 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3436 }
79072805 3437 }
3280af22
NIS		 3438 PL_toptarget = NEWSV(0,0);
3439 sv_upgrade(PL_toptarget, SVt_PVFM);
3440 sv_setpvn(PL_toptarget, "", 0);
3441 PL_bodytarget = NEWSV(0,0);
3442 sv_upgrade(PL_bodytarget, SVt_PVFM);
3443 sv_setpvn(PL_bodytarget, "", 0);
3444 PL_formtarget = PL_bodytarget;
79072805 3445
bbce6d69 3446 TAINT;
155aba94 3447 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3448#ifdef MACOS_TRADITIONAL
3449 /* $0 is not majick on a Mac */
3450 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3451#else
3280af22 3452 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3453 magicname("0", "0", 1);
bf4acbe4 3454#endif
79072805 3455 }
155aba94 3456 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3457#ifdef OS2
23da6c43 3458 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3459#else
3280af22 3460 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3461#endif
155aba94 3462 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3463 GvMULTI_on(PL_argvgv);
3464 (void)gv_AVadd(PL_argvgv);
3465 av_clear(GvAVn(PL_argvgv));
79072805 3466 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3467 SV *sv = newSVpv(argv[0],0);
3468 av_push(GvAVn(PL_argvgv),sv);
3469 if (PL_widesyscalls)
e84ff256 3470 (void)sv_utf8_decode(sv);
79072805
LW		 3471 }
3472 }
155aba94 3473 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3474 HV *hv;
3280af22
NIS		 3475 GvMULTI_on(PL_envgv);
3476 hv = GvHVn(PL_envgv);
14befaf4 3477 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3478#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3479 /* Note that if the supplied env parameter is actually a copy
3480 of the global environ then it may now point to free'd memory
3481 if the environment has been modified since. To avoid this
3482 problem we treat env==NULL as meaning 'use the default'
3483 */
3484 if (!env)
3485 env = environ;
5aabfad6 3486 if (env != environ)
79072805 3487 environ[0] = Nullch;
103a7189
JH		 3488#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3489 {
3490 char **env_base;
9041c2e3 3491 for (env_base = env; *env; env++)
103a7189
JH		 3492 dup_env_count++;
3493 if ((dup_env_base = (char **)
480bfd1e 3494 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3495 char **dup_env;
3496 for (env = env_base, dup_env = dup_env_base;
3497 *env;
480bfd1e
JH		 3498 env++, dup_env++) {
3499 /* With environ one needs to use safesysmalloc(). */
3500 *dup_env = safesysmalloc(strlen(*env) + 1);
3501 (void)strcpy(*dup_env, *env);
3502 }
103a7189
JH		 3503 *dup_env = Nullch;
3504 env = dup_env_base;
3505 } /* else what? */
3506 }
3507#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3508 if (env)
3509 for (; *env; env++) {
93a17b20 3510 if (!(s = strchr(*env,'=')))
79072805
LW		 3511 continue;
3512 *s++ = '\0';
60ce6247 3513#if defined(MSDOS)
137443ea 3514 (void)strupr(*env);
3515#endif
79072805
LW		 3516 sv = newSVpv(s--,0);
3517 (void)hv_store(hv, *env, s - *env, sv, 0);
3518 *s = '=';
764df951 3519 }
480bfd1e 3520#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3521 if (dup_env_base) {
3522 char **dup_env;
3523 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3524 safesysfree(*dup_env);
3525 safesysfree(dup_env_base);
103a7189 3526 }
7e0f6a1f 3527#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3528#endif /* USE_ENVIRON_ARRAY */
79072805 3529 }
bbce6d69 3530 TAINT_NOT;
155aba94 3531 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3532 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3533}
34de22dd 3534
76e3520e 3535STATIC void
cea2e8a9 3536S_init_perllib(pTHX)
34de22dd 3537{
85e6fe83 3538 char *s;
3280af22 3539 if (!PL_tainting) {
552a7a9b 3540#ifndef VMS
76e3520e 3541 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3542 if (s)
9c8a64f0 3543 incpush(s, TRUE, TRUE);
85e6fe83 3544 else
9c8a64f0 3545 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3546#else /* VMS */
3547 /* Treat PERL5?LIB as a possible search list logical name -- the
3548 * "natural" VMS idiom for a Unix path string. We allow each
3549 * element to be a set of |-separated directories for compatibility.
3550 */
3551 char buf[256];
3552 int idx = 0;
3553 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3554 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3555 else
9c8a64f0 3556 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3557#endif /* VMS */
85e6fe83 3558 }
34de22dd 3559
c90c0ff4 3560/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3561 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3562*/
4633a7c4 3563#ifdef APPLLIB_EXP
9c8a64f0 3564 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3565#endif
4633a7c4 3566
fed7345c 3567#ifdef ARCHLIB_EXP
9c8a64f0 3568 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3569#endif
bf4acbe4
GS		 3570#ifdef MACOS_TRADITIONAL
3571 {
3572 struct stat tmpstatbuf;
3573 SV * privdir = NEWSV(55, 0);
3574 char * macperl = PerlEnv_getenv("MACPERL");
3575
3576 if (!macperl)
3577 macperl = "";
3578
3579 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3580 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3581 incpush(SvPVX(privdir), TRUE, FALSE);
3582 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3583 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3584 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3585
bf4acbe4
GS		 3586 SvREFCNT_dec(privdir);
3587 }
3588 if (!PL_tainting)
3589 incpush(":", FALSE, FALSE);
3590#else
fed7345c 3591#ifndef PRIVLIB_EXP
65f19062 3592# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3593#endif
ac27b0f5 3594#if defined(WIN32)
9c8a64f0 3595 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3596#else
9c8a64f0 3597 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3598#endif
4633a7c4 3599
65f19062 3600#ifdef SITEARCH_EXP
3b290362
GS		 3601 /* sitearch is always relative to sitelib on Windows for
3602 * DLL-based path intuition to work correctly */
3603# if !defined(WIN32)
9c8a64f0 3604 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3605# endif
3606#endif
3607
4633a7c4 3608#ifdef SITELIB_EXP
65f19062 3609# if defined(WIN32)
9c8a64f0 3610 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3611# else
9c8a64f0 3612 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3613# endif
3614#endif
189d1e8d 3615
65f19062 3616#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3617 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3618#endif
65f19062
GS		 3619
3620#ifdef PERL_VENDORARCH_EXP
4ea817c6 3621 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3622 * DLL-based path intuition to work correctly */
3623# if !defined(WIN32)
9c8a64f0 3624 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3625# endif
4b03c463 3626#endif
65f19062
GS		 3627
3628#ifdef PERL_VENDORLIB_EXP
3629# if defined(WIN32)
9c8a64f0 3630 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3631# else
9c8a64f0 3632 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3633# endif
a3635516 3634#endif
65f19062
GS		 3635
3636#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3637 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3638#endif
65f19062 3639
3b777bb4
GS		 3640#ifdef PERL_OTHERLIBDIRS
3641 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3642#endif
3643
3280af22 3644 if (!PL_tainting)
9c8a64f0 3645 incpush(".", FALSE, FALSE);
bf4acbe4 3646#endif /* MACOS_TRADITIONAL */
774d564b 3647}
3648
ed79a026 3649#if defined(DOSISH) || defined(EPOC)
774d564b 3650# define PERLLIB_SEP ';'
3651#else
3652# if defined(VMS)
3653# define PERLLIB_SEP '|'
3654# else
bf4acbe4
GS		 3655# if defined(MACOS_TRADITIONAL)
3656# define PERLLIB_SEP ','
3657# else
3658# define PERLLIB_SEP ':'
3659# endif
774d564b 3660# endif
3661#endif
3662#ifndef PERLLIB_MANGLE
3663# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3664#endif
774d564b 3665
76e3520e 3666STATIC void
9c8a64f0 3667S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3668{
3669 SV *subdir = Nullsv;
774d564b 3670
3b290362 3671 if (!p || !*p)
774d564b 3672 return;
3673
9c8a64f0 3674 if (addsubdirs || addoldvers) {
00db4c45 3675 subdir = sv_newmortal();
774d564b 3676 }
3677
3678 /* Break at all separators */
3679 while (p && *p) {
8c52afec 3680 SV *libdir = NEWSV(55,0);
774d564b 3681 char *s;
3682
3683 /* skip any consecutive separators */
3684 while ( *p == PERLLIB_SEP ) {
3685 /* Uncomment the next line for PATH semantics */
79cb57f6 3686 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3687 p++;
3688 }
3689
3690 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3691 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3692 (STRLEN)(s - p));
3693 p = s + 1;
3694 }
3695 else {
3696 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3697 p = Nullch; /* break out */
3698 }
bf4acbe4
GS		 3699#ifdef MACOS_TRADITIONAL
3700 if (!strchr(SvPVX(libdir), ':'))
3701 sv_insert(libdir, 0, 0, ":", 1);
3702 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3703 sv_catpv(libdir, ":");
3704#endif
774d564b 3705
3706 /*
3707 * BEFORE pushing libdir onto @INC we may first push version- and
3708 * archname-specific sub-directories.
3709 */
9c8a64f0 3710 if (addsubdirs || addoldvers) {
29d82f8d 3711#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3712 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3713 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3714 const char **incver;
3715#endif
774d564b 3716 struct stat tmpstatbuf;
aa689395 3717#ifdef VMS
3718 char *unix;
3719 STRLEN len;
774d564b 3720
2d8e6c8d 3721 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3722 len = strlen(unix);
3723 while (unix[len-1] == '/') len--; /* Cosmetic */
3724 sv_usepvn(libdir,unix,len);
3725 }
3726 else
bf49b057 3727 PerlIO_printf(Perl_error_log,
aa689395 3728 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3729 SvPV(libdir,len));
aa689395 3730#endif
9c8a64f0 3731 if (addsubdirs) {
bf4acbe4
GS		 3732#ifdef MACOS_TRADITIONAL
3733#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3734#define PERL_ARCH_FMT "%s:"
3735#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3736#else
3737#define PERL_AV_SUFFIX_FMT "/"
3738#define PERL_ARCH_FMT "/%s"
084592ab 3739#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3740#endif
9c8a64f0 3741 /* .../version/archname if -d .../version/archname */
084592ab 3742 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3743 libdir,
3744 (int)PERL_REVISION, (int)PERL_VERSION,
3745 (int)PERL_SUBVERSION, ARCHNAME);
3746 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3747 S_ISDIR(tmpstatbuf.st_mode))
3748 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3749
9c8a64f0 3750 /* .../version if -d .../version */
084592ab 3751 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3752 (int)PERL_REVISION, (int)PERL_VERSION,
3753 (int)PERL_SUBVERSION);
3754 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3755 S_ISDIR(tmpstatbuf.st_mode))
3756 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3757
3758 /* .../archname if -d .../archname */
bf4acbe4 3759 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3760 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3761 S_ISDIR(tmpstatbuf.st_mode))
3762 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3763 }
9c8a64f0 3764
9c8a64f0 3765#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3766 if (addoldvers) {
9c8a64f0
GS		 3767 for (incver = incverlist; *incver; incver++) {
3768 /* .../xxx if -d .../xxx */
bf4acbe4 3769 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3770 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3771 S_ISDIR(tmpstatbuf.st_mode))
3772 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3773 }
3774 }
29d82f8d 3775#endif
774d564b 3776 }
3777
3778 /* finally push this lib directory on the end of @INC */
3280af22 3779 av_push(GvAVn(PL_incgv), libdir);
774d564b 3780 }
34de22dd 3781}
93a17b20 3782
199100c8 3783#ifdef USE_THREADS
76e3520e 3784STATIC struct perl_thread *
cea2e8a9 3785S_init_main_thread(pTHX)
199100c8 3786{
c5be433b 3787#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3788 struct perl_thread *thr;
cea2e8a9 3789#endif
199100c8
MB		 3790 XPV *xpv;
3791
52e1cb5e 3792 Newz(53, thr, 1, struct perl_thread);
533c011a 3793 PL_curcop = &PL_compiling;
c5be433b 3794 thr->interp = PERL_GET_INTERP;
199100c8 3795 thr->cvcache = newHV();
54b9620d 3796 thr->threadsv = newAV();
940cb80d 3797 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3798 thr->specific = newAV();
3799 thr->flags = THRf_R_JOINABLE;
3800 MUTEX_INIT(&thr->mutex);
3801 /* Handcraft thrsv similarly to mess_sv */
533c011a 3802 New(53, PL_thrsv, 1, SV);
199100c8 3803 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3804 SvFLAGS(PL_thrsv) = SVt_PV;
3805 SvANY(PL_thrsv) = (void*)xpv;
3806 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3807 SvPVX(PL_thrsv) = (char*)thr;
3808 SvCUR_set(PL_thrsv, sizeof(thr));
3809 SvLEN_set(PL_thrsv, sizeof(thr));
3810 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3811 thr->oursv = PL_thrsv;
3812 PL_chopset = " \n-";
3967c732 3813 PL_dumpindent = 4;
533c011a
NIS		 3814
3815 MUTEX_LOCK(&PL_threads_mutex);
3816 PL_nthreads++;
199100c8
MB		 3817 thr->tid = 0;
3818 thr->next = thr;
3819 thr->prev = thr;
8dcd6f7b 3820 thr->thr_done = 0;
533c011a 3821 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3822
4b026b9e 3823#ifdef HAVE_THREAD_INTERN
4f63d024 3824 Perl_init_thread_intern(thr);
235db74f
GS		 3825#endif
3826
3827#ifdef SET_THREAD_SELF
3828 SET_THREAD_SELF(thr);
199100c8
MB		 3829#else
3830 thr->self = pthread_self();
235db74f 3831#endif /* SET_THREAD_SELF */
06d86050 3832 PERL_SET_THX(thr);
199100c8
MB		 3833
3834 /*
411caa50
JH		 3835 * These must come after the thread self setting
3836 * because sv_setpvn does SvTAINT and the taint
3837 * fields thread selfness being set.
199100c8 3838 */
533c011a
NIS		 3839 PL_toptarget = NEWSV(0,0);
3840 sv_upgrade(PL_toptarget, SVt_PVFM);
3841 sv_setpvn(PL_toptarget, "", 0);
3842 PL_bodytarget = NEWSV(0,0);
3843 sv_upgrade(PL_bodytarget, SVt_PVFM);
3844 sv_setpvn(PL_bodytarget, "", 0);
3845 PL_formtarget = PL_bodytarget;
79cb57f6 3846 thr->errsv = newSVpvn("", 0);
78857c3c 3847 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3848
533c011a 3849 PL_maxscream = -1;
a2efc822 3850 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3851 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3852 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3853 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3854 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3855 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3856 PL_regindent = 0;
3857 PL_reginterp_cnt = 0;
5c0ca799 3858
199100c8
MB		 3859 return thr;
3860}
3861#endif /* USE_THREADS */
3862
93a17b20 3863void
864dbfa3 3864Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3865{
971a9dd3 3866 SV *atsv;
57843af0 3867 line_t oldline = CopLINE(PL_curcop);
312caa8e 3868 CV *cv;
22921e25 3869 STRLEN len;
6224f72b 3870 int ret;
db36c5a1 3871 dJMPENV;
93a17b20 3872
76e3520e 3873 while (AvFILL(paramList) >= 0) {
312caa8e 3874 cv = (CV*)av_shift(paramList);
aefff11f 3875 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3876 /* save PL_beginav for compiler */
3877 if (! PL_beginav_save)
3878 PL_beginav_save = newAV();
3879 av_push(PL_beginav_save, (SV*)cv);
3880 } else {
3881 SAVEFREESV(cv);
3882 }
14dd3ad8
GS		 3883#ifdef PERL_FLEXIBLE_EXCEPTIONS
3884 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3885#else
3886 JMPENV_PUSH(ret);
3887#endif
6224f72b 3888 switch (ret) {
312caa8e 3889 case 0:
14dd3ad8
GS		 3890#ifndef PERL_FLEXIBLE_EXCEPTIONS
3891 call_list_body(cv);
3892#endif
971a9dd3 3893 atsv = ERRSV;
312caa8e
CS		 3894 (void)SvPV(atsv, len);
3895 if (len) {
971a9dd3 3896 STRLEN n_a;
312caa8e 3897 PL_curcop = &PL_compiling;
57843af0 3898 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3899 if (paramList == PL_beginav)
3900 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3901 else
4f25aa18
GS		 3902 Perl_sv_catpvf(aTHX_ atsv,
3903 "%s failed--call queue aborted",
7d30b5c4 3904 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3905 : paramList == PL_initav ? "INIT"
3906 : "END");
312caa8e
CS		 3907 while (PL_scopestack_ix > oldscope)
3908 LEAVE;
14dd3ad8 3909 JMPENV_POP;
971a9dd3 3910 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3911 }
85e6fe83 3912 break;
6224f72b 3913 case 1:
f86702cc 3914 STATUS_ALL_FAILURE;
85e6fe83 3915 /* FALL THROUGH */
6224f72b 3916 case 2:
85e6fe83 3917 /* my_exit() was called */
3280af22 3918 while (PL_scopestack_ix > oldscope)
2ae324a7 3919 LEAVE;
84902520 3920 FREETMPS;
3280af22 3921 PL_curstash = PL_defstash;
3280af22 3922 PL_curcop = &PL_compiling;
57843af0 3923 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3924 JMPENV_POP;
cc3604b1 3925 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3926 if (paramList == PL_beginav)
cea2e8a9 3927 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3928 else
4f25aa18 3929 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3930 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3931 : paramList == PL_initav ? "INIT"
3932 : "END");
85e6fe83 3933 }
f86702cc 3934 my_exit_jump();
85e6fe83 3935 /* NOTREACHED */
6224f72b 3936 case 3:
312caa8e
CS		 3937 if (PL_restartop) {
3938 PL_curcop = &PL_compiling;
57843af0 3939 CopLINE_set(PL_curcop, oldline);
312caa8e 3940 JMPENV_JUMP(3);
85e6fe83 3941 }
bf49b057 3942 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3943 FREETMPS;
3944 break;
8990e307 3945 }
14dd3ad8 3946 JMPENV_POP;
93a17b20 3947 }
93a17b20 3948}
93a17b20 3949
14dd3ad8 3950#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3951STATIC void *
14dd3ad8 3952S_vcall_list_body(pTHX_ va_list args)
312caa8e 3953{
312caa8e 3954 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3955 return call_list_body(cv);
3956}
3957#endif
312caa8e 3958
14dd3ad8
GS		 3959STATIC void *
3960S_call_list_body(pTHX_ CV *cv)
3961{
312caa8e 3962 PUSHMARK(PL_stack_sp);
864dbfa3 3963 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3964 return NULL;
3965}
3966
f86702cc 3967void
864dbfa3 3968Perl_my_exit(pTHX_ U32 status)
f86702cc 3969{
8b73bbec 3970 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3971 thr, (unsigned long) status));
f86702cc 3972 switch (status) {
3973 case 0:
3974 STATUS_ALL_SUCCESS;
3975 break;
3976 case 1:
3977 STATUS_ALL_FAILURE;
3978 break;
3979 default:
3980 STATUS_NATIVE_SET(status);
3981 break;
3982 }
3983 my_exit_jump();
3984}
3985
3986void
864dbfa3 3987Perl_my_failure_exit(pTHX)
f86702cc 3988{
3989#ifdef VMS
3990 if (vaxc$errno & 1) {
4fdae800 3991 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3992 STATUS_NATIVE_SET(44);
f86702cc 3993 }
3994 else {
ff0cee69 3995 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3996 STATUS_NATIVE_SET(44);
f86702cc 3997 else
4fdae800 3998 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3999 }
4000#else
9b599b2a 4001 int exitstatus;
f86702cc 4002 if (errno & 255)
4003 STATUS_POSIX_SET(errno);
9b599b2a 4004 else {
ac27b0f5 4005 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 4006 if (exitstatus & 255)
4007 STATUS_POSIX_SET(exitstatus);
4008 else
4009 STATUS_POSIX_SET(255);
4010 }
f86702cc 4011#endif
4012 my_exit_jump();
93a17b20
LW		 4013}
4014
76e3520e 4015STATIC void
cea2e8a9 4016S_my_exit_jump(pTHX)
f86702cc 4017{
c09156bb 4018 register PERL_CONTEXT *cx;
f86702cc 4019 I32 gimme;
4020 SV **newsp;
4021
3280af22
NIS		 4022 if (PL_e_script) {
4023 SvREFCNT_dec(PL_e_script);
4024 PL_e_script = Nullsv;
f86702cc 4025 }
4026
3280af22 4027 POPSTACK_TO(PL_mainstack);
f86702cc 4028 if (cxstack_ix >= 0) {
4029 if (cxstack_ix > 0)
4030 dounwind(0);
3280af22 4031 POPBLOCK(cx,PL_curpm);
f86702cc 4032 LEAVE;
4033 }
ff0cee69 4034
6224f72b 4035 JMPENV_JUMP(2);
f86702cc 4036}
873ef191 4037
7a5f8e82 4038#ifdef PERL_OBJECT
873ef191 4039#include "XSUB.h"
51371543 4040#endif
873ef191 4041
0cb96387
GS		 4042static I32
4043read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 4044{
4045 char *p, *nl;
3280af22 4046 p = SvPVX(PL_e_script);
873ef191 4047 nl = strchr(p, '\n');
3280af22 4048 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4049 if (nl-p == 0) {
0cb96387 4050 filter_del(read_e_script);
873ef191 4051 return 0;
7dfe3f66 4052 }
873ef191 4053 sv_catpvn(buf_sv, p, nl-p);
3280af22 4054 sv_chop(PL_e_script, nl);
873ef191
GS		 4055 return 1;
4056}
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