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Adds PERL_EXIT_DESTRUCT_END to PL_exit_flags which if set moves END block running...
[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
31d77e54 304int
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
31d77e54
AB		 400
401 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 402 dJMPENV;
403 int x = 0;
404
405 JMPENV_PUSH(x);
406 if (PL_endav && !PL_minus_c)
407 call_list(PL_scopestack_ix, PL_endav);
408 JMPENV_POP;
26f423df 409 }
f3faeb53 410 LEAVE;
a0d0e21e
LW		 411 FREETMPS;
412
ff0cee69 413 /* We must account for everything. */
414
415 /* Destroy the main CV and syntax tree */
3280af22
NIS		 416 if (PL_main_root) {
417 PL_curpad = AvARRAY(PL_comppad);
418 op_free(PL_main_root);
419 PL_main_root = Nullop;
a0d0e21e 420 }
3280af22
NIS		 421 PL_curcop = &PL_compiling;
422 PL_main_start = Nullop;
423 SvREFCNT_dec(PL_main_cv);
424 PL_main_cv = Nullcv;
24d3c518 425 PL_dirty = TRUE;
ff0cee69 426
13621cfb
NIS		 427 /* Tell PerlIO we are about to tear things apart in case
428 we have layers which are using resources that should
429 be cleaned up now.
430 */
431
432 PerlIO_destruct(aTHX);
433
3280af22 434 if (PL_sv_objcount) {
a0d0e21e
LW		 435 /*
436 * Try to destruct global references. We do this first so that the
437 * destructors and destructees still exist. Some sv's might remain.
438 * Non-referenced objects are on their own.
439 */
a0d0e21e 440 sv_clean_objs();
8990e307
LW		 441 }
442
5cd24f17 443 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 444 SvREFCNT_dec(PL_warnhook);
445 PL_warnhook = Nullsv;
446 SvREFCNT_dec(PL_diehook);
447 PL_diehook = Nullsv;
5cd24f17 448
4b556e6c 449 /* call exit list functions */
3280af22 450 while (PL_exitlistlen-- > 0)
0cb96387 451 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 452
3280af22 453 Safefree(PL_exitlist);
4b556e6c 454
a0d0e21e 455 if (destruct_level == 0){
8990e307 456
a0d0e21e 457 DEBUG_P(debprofdump());
ac27b0f5 458
a0d0e21e 459 /* The exit() function will do everything that needs doing. */
31d77e54 460 return STATUS_NATIVE_EXPORT;;
a0d0e21e 461 }
5dd60ef7 462
551a8b83
JH		 463 /* jettison our possibly duplicated environment */
464
465#ifdef USE_ENVIRON_ARRAY
466 if (environ != PL_origenviron) {
467 I32 i;
468
469 for (i = 0; environ[i]; i++)
4b420006
JH		 470 safesysfree(environ[i]);
471 /* Must use safesysfree() when working with environ. */
472 safesysfree(environ);
551a8b83
JH		 473
474 environ = PL_origenviron;
475 }
476#endif
477
5f8cb046
DM		 478#ifdef USE_ITHREADS
479 /* the syntax tree is shared between clones
480 * so op_free(PL_main_root) only ReREFCNT_dec's
481 * REGEXPs in the parent interpreter
482 * we need to manually ReREFCNT_dec for the clones
483 */
484 {
485 I32 i = AvFILLp(PL_regex_padav) + 1;
486 SV **ary = AvARRAY(PL_regex_padav);
487
488 while (i) {
35061a7e
DM		 489 SV *resv = ary[--i];
490 REGEXP *re = (REGEXP *)SvIVX(resv);
491
492 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 493 /* this is PL_reg_curpm, already freed
35061a7e
DM		 494 * flag is set in regexec.c:S_regtry
495 */
496 SvFLAGS(resv) &= ~SVf_BREAK;
497 }
498 else {
5f8cb046
DM		 499 ReREFCNT_dec(re);
500 }
501 }
502 }
503 SvREFCNT_dec(PL_regex_padav);
504 PL_regex_padav = Nullav;
505 PL_regex_pad = NULL;
506#endif
507
5f05dabc 508 /* loosen bonds of global variables */
509
3280af22
NIS		 510 if(PL_rsfp) {
511 (void)PerlIO_close(PL_rsfp);
512 PL_rsfp = Nullfp;
8ebc5c01 513 }
514
515 /* Filters for program text */
3280af22
NIS		 516 SvREFCNT_dec(PL_rsfp_filters);
517 PL_rsfp_filters = Nullav;
8ebc5c01 518
519 /* switches */
3280af22
NIS		 520 PL_preprocess = FALSE;
521 PL_minus_n = FALSE;
522 PL_minus_p = FALSE;
523 PL_minus_l = FALSE;
524 PL_minus_a = FALSE;
525 PL_minus_F = FALSE;
526 PL_doswitches = FALSE;
599cee73 527 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 528 PL_doextract = FALSE;
529 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 530 PL_unsafe = FALSE;
531
532 Safefree(PL_inplace);
533 PL_inplace = Nullch;
a7cb1f99 534 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 535
536 if (PL_e_script) {
537 SvREFCNT_dec(PL_e_script);
538 PL_e_script = Nullsv;
8ebc5c01 539 }
540
bc0a45ed
DM		 541 while (--PL_origargc >= 0) {
542 Safefree(PL_origargv[PL_origargc]);
543 }
544 Safefree(PL_origargv);
545
8ebc5c01 546 /* magical thingies */
547
7889fe52
NIS		 548 SvREFCNT_dec(PL_ofs_sv); /* $, */
549 PL_ofs_sv = Nullsv;
5f05dabc 550
7889fe52
NIS		 551 SvREFCNT_dec(PL_ors_sv); /* $\ */
552 PL_ors_sv = Nullsv;
8ebc5c01 553
3280af22
NIS		 554 SvREFCNT_dec(PL_rs); /* $/ */
555 PL_rs = Nullsv;
dc92893f 556
3280af22
NIS		 557 SvREFCNT_dec(PL_nrs); /* $/ helper */
558 PL_nrs = Nullsv;
5f05dabc 559
d33b2eba
GS		 560 PL_multiline = 0; /* $* */
561 Safefree(PL_osname); /* $^O */
562 PL_osname = Nullch;
5f05dabc 563
3280af22
NIS		 564 SvREFCNT_dec(PL_statname);
565 PL_statname = Nullsv;
566 PL_statgv = Nullgv;
5f05dabc 567
8ebc5c01 568 /* defgv, aka *_ should be taken care of elsewhere */
569
8ebc5c01 570 /* clean up after study() */
3280af22
NIS		 571 SvREFCNT_dec(PL_lastscream);
572 PL_lastscream = Nullsv;
573 Safefree(PL_screamfirst);
574 PL_screamfirst = 0;
575 Safefree(PL_screamnext);
576 PL_screamnext = 0;
8ebc5c01 577
7d5ea4e7
GS		 578 /* float buffer */
579 Safefree(PL_efloatbuf);
580 PL_efloatbuf = Nullch;
581 PL_efloatsize = 0;
582
8ebc5c01 583 /* startup and shutdown function lists */
3280af22
NIS		 584 SvREFCNT_dec(PL_beginav);
585 SvREFCNT_dec(PL_endav);
7d30b5c4 586 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 587 SvREFCNT_dec(PL_initav);
588 PL_beginav = Nullav;
589 PL_endav = Nullav;
7d30b5c4 590 PL_checkav = Nullav;
3280af22 591 PL_initav = Nullav;
5618dfe8 592
8ebc5c01 593 /* shortcuts just get cleared */
3280af22 594 PL_envgv = Nullgv;
3280af22
NIS		 595 PL_incgv = Nullgv;
596 PL_hintgv = Nullgv;
597 PL_errgv = Nullgv;
598 PL_argvgv = Nullgv;
599 PL_argvoutgv = Nullgv;
600 PL_stdingv = Nullgv;
bf49b057 601 PL_stderrgv = Nullgv;
3280af22
NIS		 602 PL_last_in_gv = Nullgv;
603 PL_replgv = Nullgv;
5c831c24 604 PL_debstash = Nullhv;
8ebc5c01 605
606 /* reset so print() ends up where we expect */
607 setdefout(Nullgv);
5c831c24 608
7a1c5554
GS		 609 SvREFCNT_dec(PL_argvout_stack);
610 PL_argvout_stack = Nullav;
8ebc5c01 611
5c831c24
GS		 612 SvREFCNT_dec(PL_modglobal);
613 PL_modglobal = Nullhv;
614 SvREFCNT_dec(PL_preambleav);
615 PL_preambleav = Nullav;
616 SvREFCNT_dec(PL_subname);
617 PL_subname = Nullsv;
618 SvREFCNT_dec(PL_linestr);
619 PL_linestr = Nullsv;
620 SvREFCNT_dec(PL_pidstatus);
621 PL_pidstatus = Nullhv;
622 SvREFCNT_dec(PL_toptarget);
623 PL_toptarget = Nullsv;
624 SvREFCNT_dec(PL_bodytarget);
625 PL_bodytarget = Nullsv;
626 PL_formtarget = Nullsv;
627
d33b2eba 628 /* free locale stuff */
b9582b6a 629#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 630 Safefree(PL_collation_name);
631 PL_collation_name = Nullch;
b9582b6a 632#endif
d33b2eba 633
b9582b6a 634#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 635 Safefree(PL_numeric_name);
636 PL_numeric_name = Nullch;
a453c169 637 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 638#endif
d33b2eba 639
5c831c24
GS		 640 /* clear utf8 character classes */
641 SvREFCNT_dec(PL_utf8_alnum);
642 SvREFCNT_dec(PL_utf8_alnumc);
643 SvREFCNT_dec(PL_utf8_ascii);
644 SvREFCNT_dec(PL_utf8_alpha);
645 SvREFCNT_dec(PL_utf8_space);
646 SvREFCNT_dec(PL_utf8_cntrl);
647 SvREFCNT_dec(PL_utf8_graph);
648 SvREFCNT_dec(PL_utf8_digit);
649 SvREFCNT_dec(PL_utf8_upper);
650 SvREFCNT_dec(PL_utf8_lower);
651 SvREFCNT_dec(PL_utf8_print);
652 SvREFCNT_dec(PL_utf8_punct);
653 SvREFCNT_dec(PL_utf8_xdigit);
654 SvREFCNT_dec(PL_utf8_mark);
655 SvREFCNT_dec(PL_utf8_toupper);
656 SvREFCNT_dec(PL_utf8_tolower);
657 PL_utf8_alnum = Nullsv;
658 PL_utf8_alnumc = Nullsv;
659 PL_utf8_ascii = Nullsv;
660 PL_utf8_alpha = Nullsv;
661 PL_utf8_space = Nullsv;
662 PL_utf8_cntrl = Nullsv;
663 PL_utf8_graph = Nullsv;
664 PL_utf8_digit = Nullsv;
665 PL_utf8_upper = Nullsv;
666 PL_utf8_lower = Nullsv;
667 PL_utf8_print = Nullsv;
668 PL_utf8_punct = Nullsv;
669 PL_utf8_xdigit = Nullsv;
670 PL_utf8_mark = Nullsv;
671 PL_utf8_toupper = Nullsv;
672 PL_utf8_totitle = Nullsv;
673 PL_utf8_tolower = Nullsv;
674
971a9dd3
GS		 675 if (!specialWARN(PL_compiling.cop_warnings))
676 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 677 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 678 if (!specialCopIO(PL_compiling.cop_io))
679 SvREFCNT_dec(PL_compiling.cop_io);
680 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 681#ifdef USE_ITHREADS
682 Safefree(CopFILE(&PL_compiling));
683 CopFILE(&PL_compiling) = Nullch;
684 Safefree(CopSTASHPV(&PL_compiling));
685#else
01724ea0 686 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 687 CopFILEGV(&PL_compiling) = Nullgv;
688 /* cop_stash is not refcounted */
01724ea0 689#endif
5c831c24 690
a0d0e21e 691 /* Prepare to destruct main symbol table. */
5f05dabc 692
3280af22
NIS		 693 hv = PL_defstash;
694 PL_defstash = 0;
a0d0e21e 695 SvREFCNT_dec(hv);
5c831c24
GS		 696 SvREFCNT_dec(PL_curstname);
697 PL_curstname = Nullsv;
a0d0e21e 698
5a844595
GS		 699 /* clear queued errors */
700 SvREFCNT_dec(PL_errors);
701 PL_errors = Nullsv;
702
a0d0e21e 703 FREETMPS;
0453d815 704 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 705 if (PL_scopestack_ix != 0)
0453d815
PM		 706 Perl_warner(aTHX_ WARN_INTERNAL,
707 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 708 (long)PL_scopestack_ix);
709 if (PL_savestack_ix != 0)
0453d815
PM		 710 Perl_warner(aTHX_ WARN_INTERNAL,
711 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 712 (long)PL_savestack_ix);
713 if (PL_tmps_floor != -1)
0453d815 714 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 715 (long)PL_tmps_floor + 1);
a0d0e21e 716 if (cxstack_ix != -1)
0453d815 717 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 718 (long)cxstack_ix + 1);
a0d0e21e 719 }
8990e307
LW		 720
721 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 722 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 723 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 724
725 /* the 2 is for PL_fdpid and PL_strtab */
726 while (PL_sv_count > 2 && sv_clean_all())
727 ;
728
d33b2eba
GS		 729 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
730 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 731 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
732 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 733
d4777f27
GS		 734 AvREAL_off(PL_fdpid); /* no surviving entries */
735 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 736 PL_fdpid = Nullav;
737
6c644e78
GS		 738#ifdef HAVE_INTERP_INTERN
739 sys_intern_clear();
740#endif
741
6e72f9df 742 /* Destruct the global string table. */
743 {
744 /* Yell and reset the HeVAL() slots that are still holding refcounts,
745 * so that sv_free() won't fail on them.
746 */
747 I32 riter;
748 I32 max;
749 HE *hent;
750 HE **array;
751
752 riter = 0;
3280af22
NIS		 753 max = HvMAX(PL_strtab);
754 array = HvARRAY(PL_strtab);
6e72f9df 755 hent = array[0];
756 for (;;) {
0453d815
PM		 757 if (hent && ckWARN_d(WARN_INTERNAL)) {
758 Perl_warner(aTHX_ WARN_INTERNAL,
759 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 760 HeVAL(hent) - Nullsv, HeKEY(hent));
761 HeVAL(hent) = Nullsv;
762 hent = HeNEXT(hent);
763 }
764 if (!hent) {
765 if (++riter > max)
766 break;
767 hent = array[riter];
768 }
769 }
770 }
3280af22 771 SvREFCNT_dec(PL_strtab);
6e72f9df 772
e652bb2f 773#ifdef USE_ITHREADS
a0739874
DM		 774 /* free the pointer table used for cloning */
775 ptr_table_free(PL_ptr_table);
53186e96 776#endif
a0739874 777
d33b2eba
GS		 778 /* free special SVs */
779
780 SvREFCNT(&PL_sv_yes) = 0;
781 sv_clear(&PL_sv_yes);
782 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 783 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 784
785 SvREFCNT(&PL_sv_no) = 0;
786 sv_clear(&PL_sv_no);
787 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 788 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 789
790 SvREFCNT(&PL_sv_undef) = 0;
791 SvREADONLY_off(&PL_sv_undef);
d33b2eba 792
0453d815
PM		 793 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
794 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 795
3280af22 796 Safefree(PL_origfilename);
3280af22 797 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 798 if (PL_reg_curpm)
799 Safefree(PL_reg_curpm);
82ba1be6 800 Safefree(PL_reg_poscache);
3280af22
NIS		 801 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
802 Safefree(PL_op_mask);
cf36064f
GS		 803 Safefree(PL_psig_ptr);
804 Safefree(PL_psig_name);
2c2666fc 805 Safefree(PL_bitcount);
ce08f86c 806 Safefree(PL_psig_pend);
6e72f9df 807 nuke_stacks();
3280af22 808 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 809
a0d0e21e 810 DEBUG_P(debprofdump());
11343788 811#ifdef USE_THREADS
5f08fbcd 812 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 813 MUTEX_DESTROY(&PL_sv_mutex);
814 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 815 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 816 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 817 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 818#ifdef EMULATE_ATOMIC_REFCOUNTS
819 MUTEX_DESTROY(&PL_svref_mutex);
820#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 821
8023c3ce 822 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 823 Safefree(SvPVX(PL_thrsv));
824 Safefree(SvANY(PL_thrsv));
825 Safefree(PL_thrsv);
826 PL_thrsv = Nullsv;
8023c3ce 827#endif /* USE_THREADS */
d33b2eba 828
e5dd39fc
AB		 829#ifdef USE_REENTRANT_API
830 Safefree(PL_reentrant_buffer->tmbuff);
831 Safefree(PL_reentrant_buffer);
832#endif
833
612f20c3
GS		 834 sv_free_arenas();
835
fc36a67e 836 /* As the absolutely last thing, free the non-arena SV for mess() */
837
3280af22 838 if (PL_mess_sv) {
9c63abab
GS		 839 /* it could have accumulated taint magic */
840 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
841 MAGIC* mg;
842 MAGIC* moremagic;
843 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
844 moremagic = mg->mg_moremagic;
14befaf4
DM		 845 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
846 && mg->mg_len >= 0)
9c63abab
GS		 847 Safefree(mg->mg_ptr);
848 Safefree(mg);
849 }
850 }
fc36a67e 851 /* we know that type >= SVt_PV */
155aba94 852 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 853 Safefree(SvPVX(PL_mess_sv));
854 Safefree(SvANY(PL_mess_sv));
855 Safefree(PL_mess_sv);
856 PL_mess_sv = Nullsv;
fc36a67e 857 }
31d77e54 858 return STATUS_NATIVE_EXPORT;
79072805
LW		 859}
860
954c1994
GS		 861/*
862=for apidoc perl_free
863
864Releases a Perl interpreter. See L<perlembed>.
865
866=cut
867*/
868
79072805 869void
0cb96387 870perl_free(pTHXx)
79072805 871{
c5be433b 872#if defined(PERL_OBJECT)
7f0d82f7 873 PerlMem_free(this);
76e3520e 874#else
2986a63f 875# if defined(WIN32) || defined(NETWARE)
ce3e5b80 876# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH		 877 #ifdef NETWARE
878 void *host = nw_internal_host;
879 #else
880 void *host = w32_internal_host;
881 #endif
882 #ifndef NETWARE
883 if (PerlProc_lasthost()) {
ce08f86c 884 PerlIO_cleanup();
2986a63f
JH		 885 }
886 #endif
7f0d82f7 887 PerlMem_free(aTHXx);
2986a63f
JH		 888 #ifdef NETWARE
889 nw5_delete_internal_host(host);
890 #else
891 win32_delete_internal_host(host);
892 #endif
ce3e5b80 893#else
ce08f86c 894 PerlIO_cleanup();
ce3e5b80
NIS		 895 PerlMem_free(aTHXx);
896#endif
1c0ca838
GS		 897# else
898 PerlMem_free(aTHXx);
899# endif
76e3520e 900#endif
79072805
LW		 901}
902
4b556e6c 903void
864dbfa3 904Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 905{
3280af22
NIS		 906 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
907 PL_exitlist[PL_exitlistlen].fn = fn;
908 PL_exitlist[PL_exitlistlen].ptr = ptr;
909 ++PL_exitlistlen;
4b556e6c
JD		 910}
911
954c1994
GS		 912/*
913=for apidoc perl_parse
914
915Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
916
917=cut
918*/
919
79072805 920int
0cb96387 921perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 922{
6224f72b 923 I32 oldscope;
6224f72b 924 int ret;
db36c5a1 925 dJMPENV;
cea2e8a9
GS		 926#ifdef USE_THREADS
927 dTHX;
928#endif
8d063cd8 929
a687059c
LW		 930#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
931#ifdef IAMSUID
932#undef IAMSUID
cea2e8a9 933 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 934setuid perl scripts securely.\n");
935#endif
936#endif
937
8f1f23e8 938#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 939 _dyld_lookup_and_bind
940 ("__environ", (unsigned long *) &environ_pointer, NULL);
941#endif /* environ */
942
3280af22 943 PL_origargc = argc;
bc0a45ed
DM		 944 {
945 /* we copy rather than point to argv
946 * since perl_clone will copy and perl_destruct
947 * has no way of knowing if we've made a copy or
948 * just point to argv
949 */
950 int i = PL_origargc;
951 New(0, PL_origargv, i+1, char*);
952 PL_origargv[i] = '\0';
953 while (i-- > 0) {
954 PL_origargv[i] = savepv(argv[i]);
955 }
956 }
957
fa6a1c44 958#ifdef USE_ENVIRON_ARRAY
3280af22 959 PL_origenviron = environ;
a0d0e21e
LW		 960#endif
961
3280af22 962 if (PL_do_undump) {
a0d0e21e
LW		 963
964 /* Come here if running an undumped a.out. */
965
3280af22
NIS		 966 PL_origfilename = savepv(argv[0]);
967 PL_do_undump = FALSE;
a0d0e21e 968 cxstack_ix = -1; /* start label stack again */
748a9306 969 init_ids();
a0d0e21e
LW		 970 init_postdump_symbols(argc,argv,env);
971 return 0;
972 }
973
3280af22
NIS		 974 if (PL_main_root) {
975 PL_curpad = AvARRAY(PL_comppad);
976 op_free(PL_main_root);
977 PL_main_root = Nullop;
ff0cee69 978 }
3280af22
NIS		 979 PL_main_start = Nullop;
980 SvREFCNT_dec(PL_main_cv);
981 PL_main_cv = Nullcv;
79072805 982
3280af22
NIS		 983 time(&PL_basetime);
984 oldscope = PL_scopestack_ix;
599cee73 985 PL_dowarn = G_WARN_OFF;
f86702cc 986
14dd3ad8
GS		 987#ifdef PERL_FLEXIBLE_EXCEPTIONS
988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
989#else
990 JMPENV_PUSH(ret);
991#endif
6224f72b 992 switch (ret) {
312caa8e 993 case 0:
14dd3ad8
GS		 994#ifndef PERL_FLEXIBLE_EXCEPTIONS
995 parse_body(env,xsinit);
996#endif
7d30b5c4
GS		 997 if (PL_checkav)
998 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 999 ret = 0;
1000 break;
6224f72b
GS		 1001 case 1:
1002 STATUS_ALL_FAILURE;
1003 /* FALL THROUGH */
1004 case 2:
1005 /* my_exit() was called */
3280af22 1006 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1007 LEAVE;
1008 FREETMPS;
3280af22 1009 PL_curstash = PL_defstash;
7d30b5c4
GS		 1010 if (PL_checkav)
1011 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1012 ret = STATUS_NATIVE_EXPORT;
1013 break;
6224f72b 1014 case 3:
bf49b057 1015 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1016 ret = 1;
1017 break;
6224f72b 1018 }
14dd3ad8
GS		 1019 JMPENV_POP;
1020 return ret;
1021}
1022
1023#ifdef PERL_FLEXIBLE_EXCEPTIONS
1024STATIC void *
1025S_vparse_body(pTHX_ va_list args)
1026{
1027 char **env = va_arg(args, char**);
1028 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1029
1030 return parse_body(env, xsinit);
312caa8e 1031}
14dd3ad8 1032#endif
312caa8e
CS		 1033
1034STATIC void *
14dd3ad8 1035S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1036{
312caa8e
CS		 1037 int argc = PL_origargc;
1038 char **argv = PL_origargv;
312caa8e
CS		 1039 char *scriptname = NULL;
1040 int fdscript = -1;
1041 VOL bool dosearch = FALSE;
1042 char *validarg = "";
1043 AV* comppadlist;
1044 register SV *sv;
1045 register char *s;
cf756827 1046 char *cddir = Nullch;
312caa8e 1047
3280af22 1048 sv_setpvn(PL_linestr,"",0);
79cb57f6 1049 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1050 SAVEFREESV(sv);
1051 init_main_stash();
54310121 1052
6224f72b
GS		 1053 for (argc--,argv++; argc > 0; argc--,argv++) {
1054 if (argv[0][0] != '-' || !argv[0][1])
1055 break;
1056#ifdef DOSUID
1057 if (*validarg)
1058 validarg = " PHOOEY ";
1059 else
1060 validarg = argv[0];
13281fa4 1061#endif
6224f72b
GS		 1062 s = argv[0]+1;
1063 reswitch:
1064 switch (*s) {
729a02f2
GS		 1065 case 'C':
1066#ifdef WIN32
c0932edc 1067 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1068 /* FALL THROUGH */
1069#endif
1d5472a9
GS		 1070#ifndef PERL_STRICT_CR
1071 case '\r':
1072#endif
6224f72b
GS		 1073 case ' ':
1074 case '0':
1075 case 'F':
1076 case 'a':
1077 case 'c':
1078 case 'd':
1079 case 'D':
1080 case 'h':
1081 case 'i':
1082 case 'l':
1083 case 'M':
1084 case 'm':
1085 case 'n':
1086 case 'p':
1087 case 's':
1088 case 'u':
1089 case 'U':
1090 case 'v':
599cee73
PM		 1091 case 'W':
1092 case 'X':
6224f72b 1093 case 'w':
155aba94 1094 if ((s = moreswitches(s)))
6224f72b
GS		 1095 goto reswitch;
1096 break;
33b78306 1097
6224f72b 1098 case 'T':
3280af22 1099 PL_tainting = TRUE;
6224f72b
GS		 1100 s++;
1101 goto reswitch;
f86702cc 1102
6224f72b 1103 case 'e':
bf4acbe4
GS		 1104#ifdef MACOS_TRADITIONAL
1105 /* ignore -e for Dev:Pseudo argument */
1106 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1107 break;
bf4acbe4 1108#endif
3280af22 1109 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1110 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1111 if (!PL_e_script) {
79cb57f6 1112 PL_e_script = newSVpvn("",0);
0cb96387 1113 filter_add(read_e_script, NULL);
6224f72b
GS		 1114 }
1115 if (*++s)
3280af22 1116 sv_catpv(PL_e_script, s);
6224f72b 1117 else if (argv[1]) {
3280af22 1118 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1119 argc--,argv++;
1120 }
1121 else
cea2e8a9 1122 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1123 sv_catpv(PL_e_script, "\n");
6224f72b 1124 break;
afe37c7d 1125
6224f72b
GS		 1126 case 'I': /* -I handled both here and in moreswitches() */
1127 forbid_setid("-I");
1128 if (!*++s && (s=argv[1]) != Nullch) {
1129 argc--,argv++;
1130 }
6224f72b 1131 if (s && *s) {
0df16ed7
GS		 1132 char *p;
1133 STRLEN len = strlen(s);
1134 p = savepvn(s, len);
9c8a64f0 1135 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1136 sv_catpvn(sv, "-I", 2);
1137 sv_catpvn(sv, p, len);
1138 sv_catpvn(sv, " ", 1);
6224f72b 1139 Safefree(p);
0df16ed7
GS		 1140 }
1141 else
a67e862a 1142 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1143 break;
1144 case 'P':
1145 forbid_setid("-P");
3280af22 1146 PL_preprocess = TRUE;
6224f72b
GS		 1147 s++;
1148 goto reswitch;
1149 case 'S':
1150 forbid_setid("-S");
1151 dosearch = TRUE;
1152 s++;
1153 goto reswitch;
1154 case 'V':
3280af22
NIS		 1155 if (!PL_preambleav)
1156 PL_preambleav = newAV();
1157 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1158 if (*++s != ':') {
3280af22 1159 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1160#ifdef VMS
6b88bc9c 1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1162#else
3280af22 1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1164#endif
3280af22 1165 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1166# ifdef DEBUGGING
3280af22 1167 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1168# endif
6224f72b 1169# ifdef MULTIPLICITY
8f872242 1170 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1171# endif
b363f7ed
GS		 1172# ifdef USE_THREADS
1173 sv_catpv(PL_Sv," USE_THREADS");
1174# endif
ac5e8965
JH		 1175# ifdef USE_ITHREADS
1176 sv_catpv(PL_Sv," USE_ITHREADS");
1177# endif
10cc9d2a
JH		 1178# ifdef USE_64_BIT_INT
1179 sv_catpv(PL_Sv," USE_64_BIT_INT");
1180# endif
1181# ifdef USE_64_BIT_ALL
1182 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1183# endif
1184# ifdef USE_LONG_DOUBLE
1185 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1186# endif
53430762
JH		 1187# ifdef USE_LARGE_FILES
1188 sv_catpv(PL_Sv," USE_LARGE_FILES");
1189# endif
ac5e8965
JH		 1190# ifdef USE_SOCKS
1191 sv_catpv(PL_Sv," USE_SOCKS");
1192# endif
b363f7ed
GS		 1193# ifdef PERL_OBJECT
1194 sv_catpv(PL_Sv," PERL_OBJECT");
1195# endif
1196# ifdef PERL_IMPLICIT_CONTEXT
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1198# endif
1199# ifdef PERL_IMPLICIT_SYS
1200 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1201# endif
3280af22 1202 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1203
6224f72b
GS		 1204#if defined(LOCAL_PATCH_COUNT)
1205 if (LOCAL_PATCH_COUNT > 0) {
1206 int i;
3280af22 1207 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1208 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1209 if (PL_localpatches[i])
cea2e8a9 1210 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1211 }
1212 }
1213#endif
cea2e8a9 1214 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1215#ifdef __DATE__
1216# ifdef __TIME__
cea2e8a9 1217 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1218# else
cea2e8a9 1219 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1220# endif
1221#endif
3280af22 1222 sv_catpv(PL_Sv, "; \
6224f72b 1223$\"=\"\\n \"; \
69fcd688
JH		 1224@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1225#ifdef __CYGWIN__
1226 sv_catpv(PL_Sv,"\
1227push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1228#endif
1229 sv_catpv(PL_Sv, "\
6224f72b
GS		 1230print \" \\%ENV:\\n @env\\n\" if @env; \
1231print \" \\@INC:\\n @INC\\n\";");
1232 }
1233 else {
3280af22
NIS		 1234 PL_Sv = newSVpv("config_vars(qw(",0);
1235 sv_catpv(PL_Sv, ++s);
1236 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1237 s += strlen(s);
1238 }
3280af22 1239 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1240 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1241 goto reswitch;
1242 case 'x':
3280af22 1243 PL_doextract = TRUE;
6224f72b
GS		 1244 s++;
1245 if (*s)
f4c556ac 1246 cddir = s;
6224f72b
GS		 1247 break;
1248 case 0:
1249 break;
1250 case '-':
1251 if (!*++s || isSPACE(*s)) {
1252 argc--,argv++;
1253 goto switch_end;
1254 }
1255 /* catch use of gnu style long options */
1256 if (strEQ(s, "version")) {
1257 s = "v";
1258 goto reswitch;
1259 }
1260 if (strEQ(s, "help")) {
1261 s = "h";
1262 goto reswitch;
1263 }
1264 s--;
1265 /* FALL THROUGH */
1266 default:
cea2e8a9 1267 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1268 }
1269 }
6224f72b 1270 switch_end:
54310121 1271
f675dbe5
CB		 1272 if (
1273#ifndef SECURE_INTERNAL_GETENV
1274 !PL_tainting &&
1275#endif
cf756827 1276 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1277 {
cf756827 1278 char *popt = s;
74288ac8
GS		 1279 while (isSPACE(*s))
1280 s++;
1281 if (*s == '-' && *(s+1) == 'T')
1282 PL_tainting = TRUE;
1283 else {
cf756827 1284 char *popt_copy = Nullch;
74288ac8 1285 while (s && *s) {
4ea8f8fb 1286 char *d;
74288ac8
GS		 1287 while (isSPACE(*s))
1288 s++;
1289 if (*s == '-') {
1290 s++;
1291 if (isSPACE(*s))
1292 continue;
1293 }
4ea8f8fb 1294 d = s;
74288ac8
GS		 1295 if (!*s)
1296 break;
1297 if (!strchr("DIMUdmw", *s))
cea2e8a9 1298 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1299 while (++s && *s) {
1300 if (isSPACE(*s)) {
cf756827
GS		 1301 if (!popt_copy) {
1302 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1303 s = popt_copy + (s - popt);
1304 d = popt_copy + (d - popt);
1305 }
4ea8f8fb
MS		 1306 *s++ = '\0';
1307 break;
1308 }
1309 }
1310 moreswitches(d);
6224f72b 1311 }
6224f72b
GS		 1312 }
1313 }
a0d0e21e 1314
6224f72b
GS		 1315 if (!scriptname)
1316 scriptname = argv[0];
3280af22 1317 if (PL_e_script) {
6224f72b
GS		 1318 argc++,argv--;
1319 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1320 }
1321 else if (scriptname == Nullch) {
1322#ifdef MSDOS
1323 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1324 moreswitches("h");
1325#endif
1326 scriptname = "-";
1327 }
1328
1329 init_perllib();
1330
1331 open_script(scriptname,dosearch,sv,&fdscript);
1332
1333 validate_suid(validarg, scriptname,fdscript);
1334
64ca3a65 1335#ifndef PERL_MICRO
0b5b802d
GS		 1336#if defined(SIGCHLD) || defined(SIGCLD)
1337 {
1338#ifndef SIGCHLD
1339# define SIGCHLD SIGCLD
1340#endif
1341 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1342 if (sigstate == SIG_IGN) {
1343 if (ckWARN(WARN_SIGNAL))
1344 Perl_warner(aTHX_ WARN_SIGNAL,
1345 "Can't ignore signal CHLD, forcing to default");
1346 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1347 }
1348 }
1349#endif
64ca3a65 1350#endif
0b5b802d 1351
bf4acbe4
GS		 1352#ifdef MACOS_TRADITIONAL
1353 if (PL_doextract || gMacPerl_AlwaysExtract) {
1354#else
f4c556ac 1355 if (PL_doextract) {
bf4acbe4 1356#endif
6224f72b 1357 find_beginning();
f4c556ac
GS		 1358 if (cddir && PerlDir_chdir(cddir) < 0)
1359 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1360
1361 }
6224f72b 1362
3280af22
NIS		 1363 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1364 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1365 CvUNIQUE_on(PL_compcv);
1366
1367 PL_comppad = newAV();
1368 av_push(PL_comppad, Nullsv);
1369 PL_curpad = AvARRAY(PL_comppad);
1370 PL_comppad_name = newAV();
1371 PL_comppad_name_fill = 0;
1372 PL_min_intro_pending = 0;
1373 PL_padix = 0;
6224f72b 1374#ifdef USE_THREADS
79cb57f6 1375 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1376 PL_curpad[0] = (SV*)newAV();
1377 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1378 CvOWNER(PL_compcv) = 0;
1379 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1380 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1381#endif /* USE_THREADS */
1382
1383 comppadlist = newAV();
1384 AvREAL_off(comppadlist);
3280af22
NIS		 1385 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1386 av_store(comppadlist, 1, (SV*)PL_comppad);
1387 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1388
0c4f7ff0 1389 boot_core_PerlIO();
6224f72b 1390 boot_core_UNIVERSAL();
9a34ef1d 1391#ifndef PERL_MICRO
09bef843 1392 boot_core_xsutils();
9a34ef1d 1393#endif
6224f72b
GS		 1394
1395 if (xsinit)
0cb96387 1396 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1397#ifndef PERL_MICRO
ed79a026 1398#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1399 init_os_extras();
6224f72b 1400#endif
64ca3a65 1401#endif
6224f72b 1402
29209bc5 1403#ifdef USE_SOCKS
1b9c9cf5
DH		 1404# ifdef HAS_SOCKS5_INIT
1405 socks5_init(argv[0]);
1406# else
29209bc5 1407 SOCKSinit(argv[0]);
1b9c9cf5 1408# endif
ac27b0f5 1409#endif
29209bc5 1410
6224f72b
GS		 1411 init_predump_symbols();
1412 /* init_postdump_symbols not currently designed to be called */
1413 /* more than once (ENV isn't cleared first, for example) */
1414 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1415 if (!PL_do_undump)
6224f72b
GS		 1416 init_postdump_symbols(argc,argv,env);
1417
1418 init_lexer();
1419
1420 /* now parse the script */
1421
1422 SETERRNO(0,SS$_NORMAL);
3280af22 1423 PL_error_count = 0;
bf4acbe4
GS		 1424#ifdef MACOS_TRADITIONAL
1425 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1426 if (PL_minus_c)
1427 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1428 else {
1429 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1430 MacPerl_MPWFileName(PL_origfilename));
1431 }
1432 }
1433#else
3280af22
NIS		 1434 if (yyparse() || PL_error_count) {
1435 if (PL_minus_c)
cea2e8a9 1436 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1437 else {
cea2e8a9 1438 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1439 PL_origfilename);
6224f72b
GS		 1440 }
1441 }
bf4acbe4 1442#endif
57843af0 1443 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1444 PL_curstash = PL_defstash;
1445 PL_preprocess = FALSE;
1446 if (PL_e_script) {
1447 SvREFCNT_dec(PL_e_script);
1448 PL_e_script = Nullsv;
6224f72b
GS		 1449 }
1450
1451 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1452 SvREFCNT_dec(PL_rs);
1453 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1454 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1455 if (PL_do_undump)
6224f72b
GS		 1456 my_unexec();
1457
57843af0
GS		 1458 if (isWARN_ONCE) {
1459 SAVECOPFILE(PL_curcop);
1460 SAVECOPLINE(PL_curcop);
3280af22 1461 gv_check(PL_defstash);
57843af0 1462 }
6224f72b
GS		 1463
1464 LEAVE;
1465 FREETMPS;
1466
1467#ifdef MYMALLOC
1468 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1469 dump_mstats("after compilation:");
1470#endif
1471
1472 ENTER;
3280af22 1473 PL_restartop = 0;
312caa8e 1474 return NULL;
6224f72b
GS		 1475}
1476
954c1994
GS		 1477/*
1478=for apidoc perl_run
1479
1480Tells a Perl interpreter to run. See L<perlembed>.
1481
1482=cut
1483*/
1484
6224f72b 1485int
0cb96387 1486perl_run(pTHXx)
6224f72b 1487{
6224f72b 1488 I32 oldscope;
14dd3ad8 1489 int ret = 0;
db36c5a1 1490 dJMPENV;
cea2e8a9
GS		 1491#ifdef USE_THREADS
1492 dTHX;
1493#endif
6224f72b 1494
3280af22 1495 oldscope = PL_scopestack_ix;
6224f72b 1496
14dd3ad8 1497#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1498 redo_body:
14dd3ad8
GS		 1499 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1500#else
1501 JMPENV_PUSH(ret);
1502#endif
6224f72b
GS		 1503 switch (ret) {
1504 case 1:
1505 cxstack_ix = -1; /* start context stack again */
312caa8e 1506 goto redo_body;
14dd3ad8
GS		 1507 case 0: /* normal completion */
1508#ifndef PERL_FLEXIBLE_EXCEPTIONS
1509 redo_body:
1510 run_body(oldscope);
1511#endif
1512 /* FALL THROUGH */
1513 case 2: /* my_exit() */
3280af22 1514 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1515 LEAVE;
1516 FREETMPS;
3280af22 1517 PL_curstash = PL_defstash;
31d77e54
AB		 1518 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1519 PL_endav && !PL_minus_c)
1520 call_list(oldscope, PL_endav);
6224f72b
GS		 1521#ifdef MYMALLOC
1522 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1523 dump_mstats("after execution: ");
1524#endif
14dd3ad8
GS		 1525 ret = STATUS_NATIVE_EXPORT;
1526 break;
6224f72b 1527 case 3:
312caa8e
CS		 1528 if (PL_restartop) {
1529 POPSTACK_TO(PL_mainstack);
1530 goto redo_body;
6224f72b 1531 }
bf49b057 1532 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1533 FREETMPS;
14dd3ad8
GS		 1534 ret = 1;
1535 break;
6224f72b
GS		 1536 }
1537
14dd3ad8
GS		 1538 JMPENV_POP;
1539 return ret;
312caa8e
CS		 1540}
1541
14dd3ad8 1542#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1543STATIC void *
14dd3ad8 1544S_vrun_body(pTHX_ va_list args)
312caa8e 1545{
312caa8e
CS		 1546 I32 oldscope = va_arg(args, I32);
1547
14dd3ad8
GS		 1548 return run_body(oldscope);
1549}
1550#endif
1551
1552
1553STATIC void *
1554S_run_body(pTHX_ I32 oldscope)
1555{
6224f72b 1556 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1557 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1558
3280af22 1559 if (!PL_restartop) {
6224f72b
GS		 1560 DEBUG_x(dump_all());
1561 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1562 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1563 PTR2UV(thr)));
6224f72b 1564
3280af22 1565 if (PL_minus_c) {
bf4acbe4
GS		 1566#ifdef MACOS_TRADITIONAL
1567 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1568#else
bf49b057 1569 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1570#endif
6224f72b
GS		 1571 my_exit(0);
1572 }
3280af22 1573 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1574 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1575 if (PL_initav)
1576 call_list(oldscope, PL_initav);
6224f72b
GS		 1577 }
1578
1579 /* do it */
1580
3280af22 1581 if (PL_restartop) {
533c011a 1582 PL_op = PL_restartop;
3280af22 1583 PL_restartop = 0;
cea2e8a9 1584 CALLRUNOPS(aTHX);
6224f72b 1585 }
3280af22
NIS		 1586 else if (PL_main_start) {
1587 CvDEPTH(PL_main_cv) = 1;
533c011a 1588 PL_op = PL_main_start;
cea2e8a9 1589 CALLRUNOPS(aTHX);
6224f72b
GS		 1590 }
1591
f6b3007c
JH		 1592 my_exit(0);
1593 /* NOTREACHED */
312caa8e 1594 return NULL;
6224f72b
GS		 1595}
1596
954c1994
GS		 1597/*
1598=for apidoc p||get_sv
1599
1600Returns the SV of the specified Perl scalar. If C<create> is set and the
1601Perl variable does not exist then it will be created. If C<create> is not
1602set and the variable does not exist then NULL is returned.
1603
1604=cut
1605*/
1606
6224f72b 1607SV*
864dbfa3 1608Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1609{
1610 GV *gv;
1611#ifdef USE_THREADS
1612 if (name[1] == '\0' && !isALPHA(name[0])) {
1613 PADOFFSET tmp = find_threadsv(name);
411caa50 1614 if (tmp != NOT_IN_PAD)
6224f72b 1615 return THREADSV(tmp);
6224f72b
GS		 1616 }
1617#endif /* USE_THREADS */
1618 gv = gv_fetchpv(name, create, SVt_PV);
1619 if (gv)
1620 return GvSV(gv);
1621 return Nullsv;
1622}
1623
954c1994
GS		 1624/*
1625=for apidoc p||get_av
1626
1627Returns the AV of the specified Perl array. If C<create> is set and the
1628Perl variable does not exist then it will be created. If C<create> is not
1629set and the variable does not exist then NULL is returned.
1630
1631=cut
1632*/
1633
6224f72b 1634AV*
864dbfa3 1635Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1636{
1637 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1638 if (create)
1639 return GvAVn(gv);
1640 if (gv)
1641 return GvAV(gv);
1642 return Nullav;
1643}
1644
954c1994
GS		 1645/*
1646=for apidoc p||get_hv
1647
1648Returns the HV of the specified Perl hash. If C<create> is set and the
1649Perl variable does not exist then it will be created. If C<create> is not
1650set and the variable does not exist then NULL is returned.
1651
1652=cut
1653*/
1654
6224f72b 1655HV*
864dbfa3 1656Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1657{
a0d0e21e
LW		 1658 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1659 if (create)
1660 return GvHVn(gv);
1661 if (gv)
1662 return GvHV(gv);
1663 return Nullhv;
1664}
1665
954c1994
GS		 1666/*
1667=for apidoc p||get_cv
1668
1669Returns the CV of the specified Perl subroutine. If C<create> is set and
1670the Perl subroutine does not exist then it will be declared (which has the
1671same effect as saying C<sub name;>). If C<create> is not set and the
1672subroutine does not exist then NULL is returned.
1673
1674=cut
1675*/
1676
a0d0e21e 1677CV*
864dbfa3 1678Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1679{
1680 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1681 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1682 /* XXX this is probably not what they think they're getting.
1683 * It has the same effect as "sub name;", i.e. just a forward
1684 * declaration! */
8ebc5c01 1685 if (create && !GvCVu(gv))
774d564b 1686 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1687 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1688 Nullop,
a0d0e21e
LW		 1689 Nullop);
1690 if (gv)
8ebc5c01 1691 return GvCVu(gv);
a0d0e21e
LW		 1692 return Nullcv;
1693}
1694
79072805
LW		 1695/* Be sure to refetch the stack pointer after calling these routines. */
1696
954c1994
GS		 1697/*
1698=for apidoc p||call_argv
1699
1700Performs a callback to the specified Perl sub. See L<perlcall>.
1701
1702=cut
1703*/
1704
a0d0e21e 1705I32
864dbfa3 1706Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1707
8ac85365
NIS		 1708 /* See G_* flags in cop.h */
1709 /* null terminated arg list */
8990e307 1710{
a0d0e21e 1711 dSP;
8990e307 1712
924508f0 1713 PUSHMARK(SP);
a0d0e21e 1714 if (argv) {
8990e307 1715 while (*argv) {
a0d0e21e 1716 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1717 argv++;
1718 }
a0d0e21e 1719 PUTBACK;
8990e307 1720 }
864dbfa3 1721 return call_pv(sub_name, flags);
8990e307
LW		 1722}
1723
954c1994
GS		 1724/*
1725=for apidoc p||call_pv
1726
1727Performs a callback to the specified Perl sub. See L<perlcall>.
1728
1729=cut
1730*/
1731
a0d0e21e 1732I32
864dbfa3 1733Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1734 /* name of the subroutine */
1735 /* See G_* flags in cop.h */
a0d0e21e 1736{
864dbfa3 1737 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1738}
1739
954c1994
GS		 1740/*
1741=for apidoc p||call_method
1742
1743Performs a callback to the specified Perl method. The blessed object must
1744be on the stack. See L<perlcall>.
1745
1746=cut
1747*/
1748
a0d0e21e 1749I32
864dbfa3 1750Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1751 /* name of the subroutine */
1752 /* See G_* flags in cop.h */
a0d0e21e 1753{
968b3946 1754 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1755}
1756
1757/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1758/*
1759=for apidoc p||call_sv
1760
1761Performs a callback to the Perl sub whose name is in the SV. See
1762L<perlcall>.
1763
1764=cut
1765*/
1766
a0d0e21e 1767I32
864dbfa3 1768Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1769 /* See G_* flags in cop.h */
a0d0e21e 1770{
924508f0 1771 dSP;
a0d0e21e 1772 LOGOP myop; /* fake syntax tree node */
968b3946 1773 UNOP method_op;
aa689395 1774 I32 oldmark;
13689cfe 1775 volatile I32 retval = 0;
a0d0e21e 1776 I32 oldscope;
54310121 1777 bool oldcatch = CATCH_GET;
6224f72b 1778 int ret;
533c011a 1779 OP* oldop = PL_op;
db36c5a1 1780 dJMPENV;
1e422769 1781
a0d0e21e
LW		 1782 if (flags & G_DISCARD) {
1783 ENTER;
1784 SAVETMPS;
1785 }
1786
aa689395 1787 Zero(&myop, 1, LOGOP);
54310121 1788 myop.op_next = Nullop;
f51d4af5 1789 if (!(flags & G_NOARGS))
aa689395 1790 myop.op_flags |= OPf_STACKED;
54310121 1791 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1792 (flags & G_ARRAY) ? OPf_WANT_LIST :
1793 OPf_WANT_SCALAR);
462e5cf6 1794 SAVEOP();
533c011a 1795 PL_op = (OP*)&myop;
aa689395 1796
3280af22
NIS		 1797 EXTEND(PL_stack_sp, 1);
1798 *++PL_stack_sp = sv;
aa689395 1799 oldmark = TOPMARK;
3280af22 1800 oldscope = PL_scopestack_ix;
a0d0e21e 1801
3280af22 1802 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1803 /* Handle first BEGIN of -d. */
3280af22 1804 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1805 /* Try harder, since this may have been a sighandler, thus
1806 * curstash may be meaningless. */
3280af22 1807 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1808 && !(flags & G_NODEBUG))
533c011a 1809 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1810
968b3946
GS		 1811 if (flags & G_METHOD) {
1812 Zero(&method_op, 1, UNOP);
1813 method_op.op_next = PL_op;
1814 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1815 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1816 PL_op = (OP*)&method_op;
968b3946
GS		 1817 }
1818
312caa8e 1819 if (!(flags & G_EVAL)) {
0cdb2077 1820 CATCH_SET(TRUE);
14dd3ad8 1821 call_body((OP*)&myop, FALSE);
312caa8e 1822 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1823 CATCH_SET(oldcatch);
312caa8e
CS		 1824 }
1825 else {
d78bda3d 1826 myop.op_other = (OP*)&myop;
3280af22 1827 PL_markstack_ptr--;
4633a7c4
LW		 1828 /* we're trying to emulate pp_entertry() here */
1829 {
c09156bb 1830 register PERL_CONTEXT *cx;
54310121 1831 I32 gimme = GIMME_V;
ac27b0f5 1832
4633a7c4
LW		 1833 ENTER;
1834 SAVETMPS;
ac27b0f5 1835
968b3946 1836 push_return(Nullop);
1d76a5c3 1837 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1838 PUSHEVAL(cx, 0, 0);
533c011a 1839 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1840
faef0170 1841 PL_in_eval = EVAL_INEVAL;
4633a7c4 1842 if (flags & G_KEEPERR)
faef0170 1843 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1844 else
38a03e6e 1845 sv_setpv(ERRSV,"");
4633a7c4 1846 }
3280af22 1847 PL_markstack_ptr++;
a0d0e21e 1848
14dd3ad8
GS		 1849#ifdef PERL_FLEXIBLE_EXCEPTIONS
1850 redo_body:
1851 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1852 (OP*)&myop, FALSE);
14dd3ad8
GS		 1853#else
1854 JMPENV_PUSH(ret);
1855#endif
6224f72b
GS		 1856 switch (ret) {
1857 case 0:
14dd3ad8
GS		 1858#ifndef PERL_FLEXIBLE_EXCEPTIONS
1859 redo_body:
1860 call_body((OP*)&myop, FALSE);
1861#endif
312caa8e
CS		 1862 retval = PL_stack_sp - (PL_stack_base + oldmark);
1863 if (!(flags & G_KEEPERR))
1864 sv_setpv(ERRSV,"");
a0d0e21e 1865 break;
6224f72b 1866 case 1:
f86702cc 1867 STATUS_ALL_FAILURE;
a0d0e21e 1868 /* FALL THROUGH */
6224f72b 1869 case 2:
a0d0e21e 1870 /* my_exit() was called */
3280af22 1871 PL_curstash = PL_defstash;
a0d0e21e 1872 FREETMPS;
14dd3ad8 1873 JMPENV_POP;
cc3604b1 1874 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1875 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1876 my_exit_jump();
a0d0e21e 1877 /* NOTREACHED */
6224f72b 1878 case 3:
3280af22 1879 if (PL_restartop) {
533c011a 1880 PL_op = PL_restartop;
3280af22 1881 PL_restartop = 0;
312caa8e 1882 goto redo_body;
a0d0e21e 1883 }
3280af22 1884 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1885 if (flags & G_ARRAY)
1886 retval = 0;
1887 else {
1888 retval = 1;
3280af22 1889 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1890 }
312caa8e 1891 break;
a0d0e21e 1892 }
a0d0e21e 1893
3280af22 1894 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1895 SV **newsp;
1896 PMOP *newpm;
1897 I32 gimme;
c09156bb 1898 register PERL_CONTEXT *cx;
a0a2876f
LW		 1899 I32 optype;
1900
1901 POPBLOCK(cx,newpm);
1902 POPEVAL(cx);
1903 pop_return();
3280af22 1904 PL_curpm = newpm;
a0a2876f 1905 LEAVE;
a0d0e21e 1906 }
14dd3ad8 1907 JMPENV_POP;
a0d0e21e 1908 }
1e422769 1909
a0d0e21e 1910 if (flags & G_DISCARD) {
3280af22 1911 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1912 retval = 0;
1913 FREETMPS;
1914 LEAVE;
1915 }
533c011a 1916 PL_op = oldop;
a0d0e21e
LW		 1917 return retval;
1918}
1919
14dd3ad8 1920#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1921STATIC void *
14dd3ad8 1922S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1923{
1924 OP *myop = va_arg(args, OP*);
1925 int is_eval = va_arg(args, int);
1926
14dd3ad8 1927 call_body(myop, is_eval);
312caa8e
CS		 1928 return NULL;
1929}
14dd3ad8 1930#endif
312caa8e
CS		 1931
1932STATIC void
14dd3ad8 1933S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1934{
312caa8e
CS		 1935 if (PL_op == myop) {
1936 if (is_eval)
f807eda9 1937 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1938 else
f807eda9 1939 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1940 }
1941 if (PL_op)
cea2e8a9 1942 CALLRUNOPS(aTHX);
312caa8e
CS		 1943}
1944
6e72f9df 1945/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1946
954c1994
GS		 1947/*
1948=for apidoc p||eval_sv
1949
1950Tells Perl to C<eval> the string in the SV.
1951
1952=cut
1953*/
1954
a0d0e21e 1955I32
864dbfa3 1956Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1957
8ac85365 1958 /* See G_* flags in cop.h */
a0d0e21e 1959{
924508f0 1960 dSP;
a0d0e21e 1961 UNOP myop; /* fake syntax tree node */
8fa7f367 1962 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1963 volatile I32 retval = 0;
4633a7c4 1964 I32 oldscope;
6224f72b 1965 int ret;
533c011a 1966 OP* oldop = PL_op;
db36c5a1 1967 dJMPENV;
84902520 1968
4633a7c4
LW		 1969 if (flags & G_DISCARD) {
1970 ENTER;
1971 SAVETMPS;
1972 }
1973
462e5cf6 1974 SAVEOP();
533c011a
NIS		 1975 PL_op = (OP*)&myop;
1976 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1977 EXTEND(PL_stack_sp, 1);
1978 *++PL_stack_sp = sv;
1979 oldscope = PL_scopestack_ix;
79072805 1980
4633a7c4
LW		 1981 if (!(flags & G_NOARGS))
1982 myop.op_flags = OPf_STACKED;
79072805 1983 myop.op_next = Nullop;
6e72f9df 1984 myop.op_type = OP_ENTEREVAL;
54310121 1985 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1986 (flags & G_ARRAY) ? OPf_WANT_LIST :
1987 OPf_WANT_SCALAR);
6e72f9df 1988 if (flags & G_KEEPERR)
1989 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1990
14dd3ad8 1991#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1992 redo_body:
14dd3ad8 1993 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1994 (OP*)&myop, TRUE);
14dd3ad8
GS		 1995#else
1996 JMPENV_PUSH(ret);
1997#endif
6224f72b
GS		 1998 switch (ret) {
1999 case 0:
14dd3ad8
GS		 2000#ifndef PERL_FLEXIBLE_EXCEPTIONS
2001 redo_body:
2002 call_body((OP*)&myop,TRUE);
2003#endif
312caa8e
CS		 2004 retval = PL_stack_sp - (PL_stack_base + oldmark);
2005 if (!(flags & G_KEEPERR))
2006 sv_setpv(ERRSV,"");
4633a7c4 2007 break;
6224f72b 2008 case 1:
f86702cc 2009 STATUS_ALL_FAILURE;
4633a7c4 2010 /* FALL THROUGH */
6224f72b 2011 case 2:
4633a7c4 2012 /* my_exit() was called */
3280af22 2013 PL_curstash = PL_defstash;
4633a7c4 2014 FREETMPS;
14dd3ad8 2015 JMPENV_POP;
cc3604b1 2016 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2017 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2018 my_exit_jump();
4633a7c4 2019 /* NOTREACHED */
6224f72b 2020 case 3:
3280af22 2021 if (PL_restartop) {
533c011a 2022 PL_op = PL_restartop;
3280af22 2023 PL_restartop = 0;
312caa8e 2024 goto redo_body;
4633a7c4 2025 }
3280af22 2026 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2027 if (flags & G_ARRAY)
2028 retval = 0;
2029 else {
2030 retval = 1;
3280af22 2031 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2032 }
312caa8e 2033 break;
4633a7c4
LW		 2034 }
2035
14dd3ad8 2036 JMPENV_POP;
4633a7c4 2037 if (flags & G_DISCARD) {
3280af22 2038 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2039 retval = 0;
2040 FREETMPS;
2041 LEAVE;
2042 }
533c011a 2043 PL_op = oldop;
4633a7c4
LW		 2044 return retval;
2045}
2046
954c1994
GS		 2047/*
2048=for apidoc p||eval_pv
2049
2050Tells Perl to C<eval> the given string and return an SV* result.
2051
2052=cut
2053*/
2054
137443ea 2055SV*
864dbfa3 2056Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2057{
2058 dSP;
2059 SV* sv = newSVpv(p, 0);
2060
864dbfa3 2061 eval_sv(sv, G_SCALAR);
137443ea 2062 SvREFCNT_dec(sv);
2063
2064 SPAGAIN;
2065 sv = POPs;
2066 PUTBACK;
2067
2d8e6c8d
GS		 2068 if (croak_on_error && SvTRUE(ERRSV)) {
2069 STRLEN n_a;
cea2e8a9 2070 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2071 }
137443ea 2072
2073 return sv;
2074}
2075
4633a7c4
LW		 2076/* Require a module. */
2077
954c1994
GS		 2078/*
2079=for apidoc p||require_pv
2080
7d3fb230
BS		 2081Tells Perl to C<require> the file named by the string argument. It is
2082analogous to the Perl code C<eval "require '$file'">. It's even
2083implemented that way; consider using Perl_load_module instead.
954c1994 2084
7d3fb230 2085=cut */
954c1994 2086
4633a7c4 2087void
864dbfa3 2088Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2089{
d3acc0f7
JP		 2090 SV* sv;
2091 dSP;
e788e7d3 2092 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2093 PUTBACK;
2094 sv = sv_newmortal();
4633a7c4
LW		 2095 sv_setpv(sv, "require '");
2096 sv_catpv(sv, pv);
2097 sv_catpv(sv, "'");
864dbfa3 2098 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2099 SPAGAIN;
2100 POPSTACK;
79072805
LW		 2101}
2102
79072805 2103void
864dbfa3 2104Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2105{
2106 register GV *gv;
2107
155aba94 2108 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2109 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2110}
2111
76e3520e 2112STATIC void
cea2e8a9 2113S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2114{
ab821d7f 2115 /* This message really ought to be max 23 lines.
75c72d73 2116 * Removed -h because the user already knows that option. Others? */
fb73857a 2117
76e3520e 2118 static char *usage_msg[] = {
fb73857a 2119"-0[octal] specify record separator (\\0, if no argument)",
2120"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2121"-C enable native wide character system interfaces",
1950ee41 2122"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2123"-d[:debugger] run program under debugger",
2124"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2125"-e 'command' one line of program (several -e's allowed, omit programfile)",
2126"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2127"-i[extension] edit <> files in place (makes backup if extension supplied)",
2128"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2129"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2130"-[mM][-]module execute `use/no module...' before executing program",
2131"-n assume 'while (<>) { ... }' loop around program",
2132"-p assume loop like -n but print line also, like sed",
2133"-P run program through C preprocessor before compilation",
2134"-s enable rudimentary parsing for switches after programfile",
2135"-S look for programfile using PATH environment variable",
2136"-T enable tainting checks",
2137"-u dump core after parsing program",
fb73857a 2138"-U allow unsafe operations",
aac3bd0d
GS		 2139"-v print version, subversion (includes VERY IMPORTANT perl info)",
2140"-V[:variable] print configuration summary (or a single Config.pm variable)",
2141"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2142"-W enable all warnings",
2143"-X disable all warnings",
fb73857a 2144"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2145"\n",
2146NULL
2147};
76e3520e 2148 char **p = usage_msg;
fb73857a 2149
b0e47665
GS		 2150 PerlIO_printf(PerlIO_stdout(),
2151 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2152 name);
fb73857a 2153 while (*p)
b0e47665 2154 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2155}
2156
79072805
LW		 2157/* This routine handles any switches that can be given during run */
2158
2159char *
864dbfa3 2160Perl_moreswitches(pTHX_ char *s)
79072805 2161{
ba210ebe 2162 STRLEN numlen;
c07a80fd 2163 U32 rschar;
79072805
LW		 2164
2165 switch (*s) {
2166 case '0':
a863c7d1 2167 {
b21ed0a9 2168 numlen = 0; /* disallow underscores */
dff6d3cd 2169 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2170 SvREFCNT_dec(PL_nrs);
c07a80fd 2171 if (rschar & ~((U8)~0))
3280af22 2172 PL_nrs = &PL_sv_undef;
c07a80fd 2173 else if (!rschar && numlen >= 2)
79cb57f6 2174 PL_nrs = newSVpvn("", 0);
c07a80fd 2175 else {
2176 char ch = rschar;
79cb57f6 2177 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2178 }
2179 return s + numlen;
a863c7d1 2180 }
46487f74
GS		 2181 case 'C':
2182 PL_widesyscalls = TRUE;
2183 s++;
2184 return s;
2304df62 2185 case 'F':
3280af22
NIS		 2186 PL_minus_F = TRUE;
2187 PL_splitstr = savepv(s + 1);
2304df62
AD		 2188 s += strlen(s);
2189 return s;
79072805 2190 case 'a':
3280af22 2191 PL_minus_a = TRUE;
79072805
LW		 2192 s++;
2193 return s;
2194 case 'c':
3280af22 2195 PL_minus_c = TRUE;
79072805
LW		 2196 s++;
2197 return s;
2198 case 'd':
bbce6d69 2199 forbid_setid("-d");
4633a7c4 2200 s++;
70c94a19
RR		 2201 /* The following permits -d:Mod to accepts arguments following an =
2202 in the fashion that -MSome::Mod does. */
2203 if (*s == ':' || *s == '=') {
2204 char *start;
2205 SV *sv;
2206 sv = newSVpv("use Devel::", 0);
2207 start = ++s;
2208 /* We now allow -d:Module=Foo,Bar */
2209 while(isALNUM(*s) || *s==':') ++s;
2210 if (*s != '=')
2211 sv_catpv(sv, start);
2212 else {
2213 sv_catpvn(sv, start, s-start);
2214 sv_catpv(sv, " split(/,/,q{");
2215 sv_catpv(sv, ++s);
2216 sv_catpv(sv, "})");
2217 }
4633a7c4 2218 s += strlen(s);
70c94a19 2219 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2220 }
ed094faf 2221 if (!PL_perldb) {
3280af22 2222 PL_perldb = PERLDB_ALL;
a0d0e21e 2223 init_debugger();
ed094faf 2224 }
79072805
LW		 2225 return s;
2226 case 'D':
0453d815 2227 {
79072805 2228#ifdef DEBUGGING
bbce6d69 2229 forbid_setid("-D");
79072805 2230 if (isALPHA(s[1])) {
04932ac8
DM		 2231 /* if adding extra options, remember to update DEBUG_MASK */
2232 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2233 char *d;
2234
93a17b20 2235 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2236 PL_debug |= 1 << (d - debopts);
79072805
LW		 2237 }
2238 else {
3280af22 2239 PL_debug = atoi(s+1);
79072805
LW		 2240 for (s++; isDIGIT(*s); s++) ;
2241 }
aea4f609 2242 PL_debug |= DEBUG_TOP_FLAG;
79072805 2243#else
0453d815
PM		 2244 if (ckWARN_d(WARN_DEBUGGING))
2245 Perl_warner(aTHX_ WARN_DEBUGGING,
2246 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2247 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2248#endif
2249 /*SUPPRESS 530*/
2250 return s;
0453d815 2251 }
4633a7c4 2252 case 'h':
ac27b0f5 2253 usage(PL_origargv[0]);
6ad3d225 2254 PerlProc_exit(0);
79072805 2255 case 'i':
3280af22
NIS		 2256 if (PL_inplace)
2257 Safefree(PL_inplace);
2258 PL_inplace = savepv(s+1);
79072805 2259 /*SUPPRESS 530*/
3280af22 2260 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2261 if (*s) {
fb73857a 2262 *s++ = '\0';
7b8d334a
GS		 2263 if (*s == '-') /* Additional switches on #! line. */
2264 s++;
2265 }
fb73857a 2266 return s;
2267 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2268 forbid_setid("-I");
fb73857a 2269 ++s;
2270 while (*s && isSPACE(*s))
2271 ++s;
2272 if (*s) {
774d564b 2273 char *e, *p;
0df16ed7
GS		 2274 p = s;
2275 /* ignore trailing spaces (possibly followed by other switches) */
2276 do {
2277 for (e = p; *e && !isSPACE(*e); e++) ;
2278 p = e;
2279 while (isSPACE(*p))
2280 p++;
2281 } while (*p && *p != '-');
2282 e = savepvn(s, e-s);
9c8a64f0 2283 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2284 Safefree(e);
2285 s = p;
2286 if (*s == '-')
2287 s++;
79072805
LW		 2288 }
2289 else
a67e862a 2290 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2291 return s;
79072805 2292 case 'l':
3280af22 2293 PL_minus_l = TRUE;
79072805 2294 s++;
7889fe52
NIS		 2295 if (PL_ors_sv) {
2296 SvREFCNT_dec(PL_ors_sv);
2297 PL_ors_sv = Nullsv;
2298 }
79072805 2299 if (isDIGIT(*s)) {
7889fe52 2300 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2301 numlen = 0; /* disallow underscores */
7889fe52 2302 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2303 s += numlen;
2304 }
2305 else {
3280af22 2306 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2307 PL_ors_sv = newSVpvn("\n\n",2);
2308 }
2309 else {
2310 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2311 }
79072805
LW		 2312 }
2313 return s;
1a30305b 2314 case 'M':
bbce6d69 2315 forbid_setid("-M"); /* XXX ? */
1a30305b 2316 /* FALL THROUGH */
2317 case 'm':
bbce6d69 2318 forbid_setid("-m"); /* XXX ? */
1a30305b 2319 if (*++s) {
a5f75d66 2320 char *start;
11343788 2321 SV *sv;
a5f75d66
AD		 2322 char *use = "use ";
2323 /* -M-foo == 'no foo' */
2324 if (*s == '-') { use = "no "; ++s; }
11343788 2325 sv = newSVpv(use,0);
a5f75d66 2326 start = s;
1a30305b 2327 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2328 while(isALNUM(*s) || *s==':') ++s;
2329 if (*s != '=') {
11343788 2330 sv_catpv(sv, start);
c07a80fd 2331 if (*(start-1) == 'm') {
2332 if (*s != '\0')
cea2e8a9 2333 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2334 sv_catpv( sv, " ()");
c07a80fd 2335 }
2336 } else {
6df41af2 2337 if (s == start)
be98fb35
GS		 2338 Perl_croak(aTHX_ "Module name required with -%c option",
2339 s[-1]);
11343788
MB		 2340 sv_catpvn(sv, start, s-start);
2341 sv_catpv(sv, " split(/,/,q{");
2342 sv_catpv(sv, ++s);
2343 sv_catpv(sv, "})");
c07a80fd 2344 }
1a30305b 2345 s += strlen(s);
5c831c24 2346 if (!PL_preambleav)
3280af22
NIS		 2347 PL_preambleav = newAV();
2348 av_push(PL_preambleav, sv);
1a30305b 2349 }
2350 else
cea2e8a9 2351 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2352 return s;
79072805 2353 case 'n':
3280af22 2354 PL_minus_n = TRUE;
79072805
LW		 2355 s++;
2356 return s;
2357 case 'p':
3280af22 2358 PL_minus_p = TRUE;
79072805
LW		 2359 s++;
2360 return s;
2361 case 's':
bbce6d69 2362 forbid_setid("-s");
3280af22 2363 PL_doswitches = TRUE;
79072805
LW		 2364 s++;
2365 return s;
463ee0b2 2366 case 'T':
3280af22 2367 if (!PL_tainting)
cea2e8a9 2368 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2369 s++;
2370 return s;
79072805 2371 case 'u':
bf4acbe4
GS		 2372#ifdef MACOS_TRADITIONAL
2373 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2374#endif
3280af22 2375 PL_do_undump = TRUE;
79072805
LW		 2376 s++;
2377 return s;
2378 case 'U':
3280af22 2379 PL_unsafe = TRUE;
79072805
LW		 2380 s++;
2381 return s;
2382 case 'v':
8e9464f1 2383#if !defined(DGUX)
b0e47665 2384 PerlIO_printf(PerlIO_stdout(),
d2560b70 2385 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2386 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2387#else /* DGUX */
2388/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2389 PerlIO_printf(PerlIO_stdout(),
2390 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2391 PerlIO_printf(PerlIO_stdout(),
2392 Perl_form(aTHX_ " built under %s at %s %s\n",
2393 OSNAME, __DATE__, __TIME__));
2394 PerlIO_printf(PerlIO_stdout(),
2395 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2396 OSVERS));
8e9464f1
JH		 2397#endif /* !DGUX */
2398
fb73857a 2399#if defined(LOCAL_PATCH_COUNT)
2400 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2401 PerlIO_printf(PerlIO_stdout(),
2402 "\n(with %d registered patch%s, "
2403 "see perl -V for more detail)",
2404 (int)LOCAL_PATCH_COUNT,
2405 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2406#endif
1a30305b 2407
b0e47665 2408 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2409 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2410#ifdef MACOS_TRADITIONAL
2411 PerlIO_printf(PerlIO_stdout(),
084592ab 2412 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2413#endif
79072805 2414#ifdef MSDOS
b0e47665
GS		 2415 PerlIO_printf(PerlIO_stdout(),
2416 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2417#endif
2418#ifdef DJGPP
b0e47665
GS		 2419 PerlIO_printf(PerlIO_stdout(),
2420 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2421 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2422#endif
79072805 2423#ifdef OS2
b0e47665
GS		 2424 PerlIO_printf(PerlIO_stdout(),
2425 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2426 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2427#endif
79072805 2428#ifdef atarist
b0e47665
GS		 2429 PerlIO_printf(PerlIO_stdout(),
2430 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2431#endif
a3f9223b 2432#ifdef __BEOS__
b0e47665
GS		 2433 PerlIO_printf(PerlIO_stdout(),
2434 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2435#endif
1d84e8df 2436#ifdef MPE
b0e47665 2437 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2438 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2439#endif
9d116dd7 2440#ifdef OEMVS
b0e47665
GS		 2441 PerlIO_printf(PerlIO_stdout(),
2442 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2443#endif
495c5fdc 2444#ifdef __VOS__
b0e47665
GS		 2445 PerlIO_printf(PerlIO_stdout(),
2446 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2447#endif
092bebab 2448#ifdef __OPEN_VM
b0e47665
GS		 2449 PerlIO_printf(PerlIO_stdout(),
2450 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2451#endif
a1a0e61e 2452#ifdef POSIX_BC
b0e47665
GS		 2453 PerlIO_printf(PerlIO_stdout(),
2454 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2455#endif
61ae2fbf 2456#ifdef __MINT__
b0e47665
GS		 2457 PerlIO_printf(PerlIO_stdout(),
2458 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2459#endif
f83d2536 2460#ifdef EPOC
b0e47665
GS		 2461 PerlIO_printf(PerlIO_stdout(),
2462 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2463#endif
e1caacb4
JH		 2464#ifdef UNDER_CE
2465 printf("WINCE port by Rainer Keuchel, 2001\n");
2466 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2467 wce_hitreturn();
2468#endif
baed7233
DL		 2469#ifdef BINARY_BUILD_NOTICE
2470 BINARY_BUILD_NOTICE;
2471#endif
b0e47665
GS		 2472 PerlIO_printf(PerlIO_stdout(),
2473 "\n\
79072805 2474Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2475GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2476Complete documentation for Perl, including FAQ lists, should be found on\n\
2477this system using `man perl' or `perldoc perl'. If you have access to the\n\
2478Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2479 PerlProc_exit(0);
79072805 2480 case 'w':
599cee73 2481 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2482 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2483 s++;
2484 return s;
2485 case 'W':
ac27b0f5 2486 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2487 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2488 s++;
2489 return s;
2490 case 'X':
ac27b0f5 2491 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2492 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2493 s++;
2494 return s;
a0d0e21e 2495 case '*':
79072805
LW		 2496 case ' ':
2497 if (s[1] == '-') /* Additional switches on #! line. */
2498 return s+2;
2499 break;
a0d0e21e 2500 case '-':
79072805 2501 case 0:
51882d45 2502#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2503 case '\r':
2504#endif
79072805
LW		 2505 case '\n':
2506 case '\t':
2507 break;
aa689395 2508#ifdef ALTERNATE_SHEBANG
2509 case 'S': /* OS/2 needs -S on "extproc" line. */
2510 break;
2511#endif
a0d0e21e 2512 case 'P':
3280af22 2513 if (PL_preprocess)
a0d0e21e
LW		 2514 return s+1;
2515 /* FALL THROUGH */
79072805 2516 default:
cea2e8a9 2517 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2518 }
2519 return Nullch;
2520}
2521
2522/* compliments of Tom Christiansen */
2523
2524/* unexec() can be found in the Gnu emacs distribution */
ee580363 2525/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2526
2527void
864dbfa3 2528Perl_my_unexec(pTHX)
79072805
LW		 2529{
2530#ifdef UNEXEC
46fc3d4c 2531 SV* prog;
2532 SV* file;
ee580363 2533 int status = 1;
79072805
LW		 2534 extern int etext;
2535
ee580363 2536 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2537 sv_catpv(prog, "/perl");
6b88bc9c 2538 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2539 sv_catpv(file, ".perldump");
79072805 2540
ee580363
GS		 2541 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2542 /* unexec prints msg to stderr in case of failure */
6ad3d225 2543 PerlProc_exit(status);
79072805 2544#else
a5f75d66
AD		 2545# ifdef VMS
2546# include <lib$routines.h>
2547 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2548# else
79072805 2549 ABORT(); /* for use with undump */
aa689395 2550# endif
a5f75d66 2551#endif
79072805
LW		 2552}
2553
cb68f92d
GS		 2554/* initialize curinterp */
2555STATIC void
cea2e8a9 2556S_init_interp(pTHX)
cb68f92d
GS		 2557{
2558
066ef5b5 2559#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2560#define I_REINIT \
6b88bc9c
GS		 2561 STMT_START { \
2562 PL_chopset = " \n-"; \
2563 PL_copline = NOLINE; \
2564 PL_curcop = &PL_compiling;\
2565 PL_curcopdb = NULL; \
2566 PL_dbargs = 0; \
3967c732 2567 PL_dumpindent = 4; \
6b88bc9c
GS		 2568 PL_laststatval = -1; \
2569 PL_laststype = OP_STAT; \
2570 PL_maxscream = -1; \
2571 PL_maxsysfd = MAXSYSFD; \
2572 PL_statname = Nullsv; \
2573 PL_tmps_floor = -1; \
2574 PL_tmps_ix = -1; \
2575 PL_op_mask = NULL; \
6b88bc9c
GS		 2576 PL_laststatval = -1; \
2577 PL_laststype = OP_STAT; \
2578 PL_mess_sv = Nullsv; \
2579 PL_splitstr = " "; \
2580 PL_generation = 100; \
2581 PL_exitlist = NULL; \
2582 PL_exitlistlen = 0; \
2583 PL_regindent = 0; \
2584 PL_in_clean_objs = FALSE; \
2585 PL_in_clean_all = FALSE; \
2586 PL_profiledata = NULL; \
2587 PL_rsfp = Nullfp; \
2588 PL_rsfp_filters = Nullav; \
24d3c518 2589 PL_dirty = FALSE; \
cb68f92d 2590 } STMT_END
9666903d 2591 I_REINIT;
066ef5b5
GS		 2592#else
2593# ifdef MULTIPLICITY
2594# define PERLVAR(var,type)
51371543 2595# define PERLVARA(var,n,type)
cea2e8a9 2596# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2597# if defined(USE_THREADS)
2598# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2599# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2600# else /* !USE_THREADS */
2601# define PERLVARI(var,type,init) aTHX->var = init;
2602# define PERLVARIC(var,type,init) aTHX->var = init;
2603# endif /* USE_THREADS */
cea2e8a9 2604# else
c5be433b
GS		 2605# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2606# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2607# endif
066ef5b5
GS		 2608# include "intrpvar.h"
2609# ifndef USE_THREADS
2610# include "thrdvar.h"
2611# endif
2612# undef PERLVAR
51371543 2613# undef PERLVARA
066ef5b5
GS		 2614# undef PERLVARI
2615# undef PERLVARIC
3967c732 2616# else
066ef5b5 2617# define PERLVAR(var,type)
51371543 2618# define PERLVARA(var,n,type)
533c011a
NIS		 2619# define PERLVARI(var,type,init) PL_##var = init;
2620# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2621# include "intrpvar.h"
2622# ifndef USE_THREADS
2623# include "thrdvar.h"
2624# endif
2625# undef PERLVAR
51371543 2626# undef PERLVARA
066ef5b5
GS		 2627# undef PERLVARI
2628# undef PERLVARIC
2629# endif
cb68f92d
GS		 2630#endif
2631
cb68f92d
GS		 2632}
2633
76e3520e 2634STATIC void
cea2e8a9 2635S_init_main_stash(pTHX)
79072805 2636{
463ee0b2 2637 GV *gv;
6e72f9df 2638
2639 /* Note that strtab is a rather special HV. Assumptions are made
2640 about not iterating on it, and not adding tie magic to it.
2641 It is properly deallocated in perl_destruct() */
3280af22 2642 PL_strtab = newHV();
5f08fbcd
GS		 2643#ifdef USE_THREADS
2644 MUTEX_INIT(&PL_strtab_mutex);
2645#endif
3280af22
NIS		 2646 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2647 hv_ksplit(PL_strtab, 512);
ac27b0f5 2648
3280af22 2649 PL_curstash = PL_defstash = newHV();
79cb57f6 2650 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2651 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2652 SvREFCNT_dec(GvHV(gv));
3280af22 2653 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2654 SvREADONLY_on(gv);
3280af22
NIS		 2655 HvNAME(PL_defstash) = savepv("main");
2656 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2657 GvMULTI_on(PL_incgv);
2658 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2659 GvMULTI_on(PL_hintgv);
2660 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2661 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2662 GvMULTI_on(PL_errgv);
2663 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2664 GvMULTI_on(PL_replgv);
cea2e8a9 2665 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2666 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2667 sv_setpvn(ERRSV, "", 0);
3280af22 2668 PL_curstash = PL_defstash;
11faa288 2669 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2670 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2671 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2672 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2673 /* We must init $/ before switches are processed. */
864dbfa3 2674 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2675}
2676
76e3520e 2677STATIC void
cea2e8a9 2678S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2679{
6c4ab083 2680 *fdscript = -1;
79072805 2681
3280af22
NIS		 2682 if (PL_e_script) {
2683 PL_origfilename = savepv("-e");
96436eeb 2684 }
6c4ab083
GS		 2685 else {
2686 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2687 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2688
2689 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2690 char *s = scriptname + 8;
2691 *fdscript = atoi(s);
2692 while (isDIGIT(*s))
2693 s++;
2694 if (*s) {
2695 scriptname = savepv(s + 1);
3280af22
NIS		 2696 Safefree(PL_origfilename);
2697 PL_origfilename = scriptname;
6c4ab083
GS		 2698 }
2699 }
2700 }
2701
f4dd75d9
GS		 2702#ifdef USE_ITHREADS
2703 Safefree(CopFILE(PL_curcop));
2704#else
2705 SvREFCNT_dec(CopFILEGV(PL_curcop));
2706#endif
57843af0 2707 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2708 if (strEQ(PL_origfilename,"-"))
79072805 2709 scriptname = "";
01f988be 2710 if (*fdscript >= 0) {
3280af22 2711 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2712#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2713 if (PL_rsfp)
2714 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2715#endif
2716 }
3280af22 2717 else if (PL_preprocess) {
46fc3d4c 2718 char *cpp_cfg = CPPSTDIN;
79cb57f6 2719 SV *cpp = newSVpvn("",0);
46fc3d4c 2720 SV *cmd = NEWSV(0,0);
2721
2722 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2723 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2724 sv_catpv(cpp, cpp_cfg);
79072805 2725
0df16ed7 2726 sv_catpvn(sv, "-I", 2);
fed7345c 2727 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2728
14953ddc
MB		 2729 DEBUG_P(PerlIO_printf(Perl_debug_log,
2730 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2731 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2732#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2733 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2734sed %s -e \"/^[^#]/b\" \
2735 -e \"/^#[ ]*include[ ]/b\" \
2736 -e \"/^#[ ]*define[ ]/b\" \
2737 -e \"/^#[ ]*if[ ]/b\" \
2738 -e \"/^#[ ]*ifdef[ ]/b\" \
2739 -e \"/^#[ ]*ifndef[ ]/b\" \
2740 -e \"/^#[ ]*else/b\" \
2741 -e \"/^#[ ]*elif[ ]/b\" \
2742 -e \"/^#[ ]*undef[ ]/b\" \
2743 -e \"/^#[ ]*endif/b\" \
2744 -e \"s/^#.*//\" \
894356b3 2745 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2746 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2747#else
092bebab 2748# ifdef __OPEN_VM
cea2e8a9 2749 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2750%s %s -e '/^[^#]/b' \
2751 -e '/^#[ ]*include[ ]/b' \
2752 -e '/^#[ ]*define[ ]/b' \
2753 -e '/^#[ ]*if[ ]/b' \
2754 -e '/^#[ ]*ifdef[ ]/b' \
2755 -e '/^#[ ]*ifndef[ ]/b' \
2756 -e '/^#[ ]*else/b' \
2757 -e '/^#[ ]*elif[ ]/b' \
2758 -e '/^#[ ]*undef[ ]/b' \
2759 -e '/^#[ ]*endif/b' \
2760 -e 's/^[ ]*#.*//' \
894356b3 2761 %s | %"SVf" %"SVf" %s",
092bebab 2762# else
cea2e8a9 2763 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2764%s %s -e '/^[^#]/b' \
2765 -e '/^#[ ]*include[ ]/b' \
2766 -e '/^#[ ]*define[ ]/b' \
2767 -e '/^#[ ]*if[ ]/b' \
2768 -e '/^#[ ]*ifdef[ ]/b' \
2769 -e '/^#[ ]*ifndef[ ]/b' \
2770 -e '/^#[ ]*else/b' \
2771 -e '/^#[ ]*elif[ ]/b' \
2772 -e '/^#[ ]*undef[ ]/b' \
2773 -e '/^#[ ]*endif/b' \
2774 -e 's/^[ ]*#.*//' \
894356b3 2775 %s | %"SVf" -C %"SVf" %s",
092bebab 2776# endif
79072805
LW		 2777#ifdef LOC_SED
2778 LOC_SED,
2779#else
2780 "sed",
2781#endif
3280af22 2782 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2783#endif
46fc3d4c 2784 scriptname, cpp, sv, CPPMINUS);
3280af22 2785 PL_doextract = FALSE;
79072805 2786#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2787 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2788#ifdef HAS_SETEUID
b28d0864 2789 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2790#else
2791#ifdef HAS_SETREUID
b28d0864 2792 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2793#else
2794#ifdef HAS_SETRESUID
b28d0864 2795 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2796#else
b28d0864 2797 PerlProc_setuid(PL_uid);
79072805
LW		 2798#endif
2799#endif
85e6fe83 2800#endif
b28d0864 2801 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2802 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2803 }
2804#endif /* IAMSUID */
3280af22 2805 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2806 SvREFCNT_dec(cmd);
2807 SvREFCNT_dec(cpp);
79072805
LW		 2808 }
2809 else if (!*scriptname) {
bbce6d69 2810 forbid_setid("program input from stdin");
3280af22 2811 PL_rsfp = PerlIO_stdin();
79072805 2812 }
96436eeb 2813 else {
3280af22 2814 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2815#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2816 if (PL_rsfp)
2817 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2818#endif
2819 }
3280af22 2820 if (!PL_rsfp) {
13281fa4 2821#ifdef DOSUID
a687059c 2822#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2823 if (PL_euid &&
cc49e20b 2824 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2825 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2826 {
46fc3d4c 2827 /* try again */
a7cb1f99 2828 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2829 (int)PERL_REVISION, (int)PERL_VERSION,
2830 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2831 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2832 }
2833#endif
2834#endif
584d69ec
JH		 2835#ifdef IAMSUID
2836 errno = EPERM;
2837 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2838 Strerror(errno));
2839#else
cea2e8a9 2840 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2841 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2842#endif
13281fa4 2843 }
79072805 2844}
8d063cd8 2845
7b89560d
JH		 2846/* Mention
2847 * I_SYSSTATVFS HAS_FSTATVFS
2848 * I_SYSMOUNT
c890dc6c 2849 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2850 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2851 * here so that metaconfig picks them up. */
2852
104d25b7 2853#ifdef IAMSUID
864dbfa3 2854STATIC int
e688b231 2855S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2856{
0545a864
JH		 2857 int check_okay = 0; /* able to do all the required sys/libcalls */
2858 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2859/*
ad27e871 2860 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2861 * fstatvfs() is UNIX98.
0545a864 2862 * fstatfs() is 4.3 BSD.
ad27e871 2863 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2864 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2865 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2866 */
2867
6439433f
JH		 2868#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2869
2870# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2871 defined(HAS_FSTATVFS)
2872# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2873 struct statvfs stfs;
6439433f 2874
104d25b7
JH		 2875 check_okay = fstatvfs(fd, &stfs) == 0;
2876 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2877# endif /* fstatvfs */
ac27b0f5 2878
6439433f
JH		 2879# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2880 defined(PERL_MOUNT_NOSUID) && \
2881 defined(HAS_FSTATFS) && \
2882 defined(HAS_STRUCT_STATFS) && \
2883 defined(HAS_STRUCT_STATFS_F_FLAGS)
2884# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2885 struct statfs stfs;
6439433f 2886
104d25b7 2887 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2888 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2889# endif /* fstatfs */
2890
2891# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2892 defined(PERL_MOUNT_NOSUID) && \
2893 defined(HAS_FSTAT) && \
2894 defined(HAS_USTAT) && \
2895 defined(HAS_GETMNT) && \
2896 defined(HAS_STRUCT_FS_DATA) && \
2897 defined(NOSTAT_ONE)
2898# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2899 struct stat fdst;
6439433f 2900
0545a864 2901 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2902 struct ustat us;
2903 if (ustat(fdst.st_dev, &us) == 0) {
2904 struct fs_data fsd;
2905 /* NOSTAT_ONE here because we're not examining fields which
2906 * vary between that case and STAT_ONE. */
ad27e871 2907 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2908 size_t cmplen = sizeof(us.f_fname);
2909 if (sizeof(fsd.fd_req.path) < cmplen)
2910 cmplen = sizeof(fsd.fd_req.path);
2911 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2912 fdst.st_dev == fsd.fd_req.dev) {
2913 check_okay = 1;
2914 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2915 }
2916 }
2917 }
2918 }
0545a864 2919 }
6439433f
JH		 2920# endif /* fstat+ustat+getmnt */
2921
2922# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2923 defined(HAS_GETMNTENT) && \
2924 defined(HAS_HASMNTOPT) && \
2925 defined(MNTOPT_NOSUID)
2926# define FD_ON_NOSUID_CHECK_OKAY
2927 FILE *mtab = fopen("/etc/mtab", "r");
2928 struct mntent *entry;
2929 struct stat stb, fsb;
104d25b7
JH		 2930
2931 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2932 while (entry = getmntent(mtab)) {
2933 if (stat(entry->mnt_dir, &fsb) == 0
2934 && fsb.st_dev == stb.st_dev)
2935 {
2936 /* found the filesystem */
2937 check_okay = 1;
2938 if (hasmntopt(entry, MNTOPT_NOSUID))
2939 on_nosuid = 1;
2940 break;
2941 } /* A single fs may well fail its stat(). */
2942 }
104d25b7
JH		 2943 }
2944 if (mtab)
6439433f
JH		 2945 fclose(mtab);
2946# endif /* getmntent+hasmntopt */
0545a864 2947
ac27b0f5 2948 if (!check_okay)
0545a864 2949 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2950 return on_nosuid;
2951}
2952#endif /* IAMSUID */
2953
76e3520e 2954STATIC void
cea2e8a9 2955S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2956{
155aba94 2957#ifdef IAMSUID
96436eeb 2958 int which;
155aba94 2959#endif
96436eeb 2960
13281fa4
LW		 2961 /* do we need to emulate setuid on scripts? */
2962
2963 /* This code is for those BSD systems that have setuid #! scripts disabled
2964 * in the kernel because of a security problem. Merely defining DOSUID
2965 * in perl will not fix that problem, but if you have disabled setuid
2966 * scripts in the kernel, this will attempt to emulate setuid and setgid
2967 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2968 * root version must be called suidperl or sperlN.NNN. If regular perl
2969 * discovers that it has opened a setuid script, it calls suidperl with
2970 * the same argv that it had. If suidperl finds that the script it has
2971 * just opened is NOT setuid root, it sets the effective uid back to the
2972 * uid. We don't just make perl setuid root because that loses the
2973 * effective uid we had before invoking perl, if it was different from the
2974 * uid.
13281fa4
LW		 2975 *
2976 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2977 * be defined in suidperl only. suidperl must be setuid root. The
2978 * Configure script will set this up for you if you want it.
2979 */
a687059c 2980
13281fa4 2981#ifdef DOSUID
6e72f9df 2982 char *s, *s2;
a0d0e21e 2983
b28d0864 2984 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2985 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2986 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2987 I32 len;
2d8e6c8d 2988 STRLEN n_a;
13281fa4 2989
a687059c 2990#ifdef IAMSUID
fe14fcc3 2991#ifndef HAS_SETREUID
a687059c
LW		 2992 /* On this access check to make sure the directories are readable,
2993 * there is actually a small window that the user could use to make
2994 * filename point to an accessible directory. So there is a faint
2995 * chance that someone could execute a setuid script down in a
2996 * non-accessible directory. I don't know what to do about that.
2997 * But I don't think it's too important. The manual lies when
2998 * it says access() is useful in setuid programs.
2999 */
cc49e20b 3000 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 3001 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 3002#else
3003 /* If we can swap euid and uid, then we can determine access rights
3004 * with a simple stat of the file, and then compare device and
3005 * inode to make sure we did stat() on the same file we opened.
3006 * Then we just have to make sure he or she can execute it.
3007 */
3008 {
3009 struct stat tmpstatbuf;
3010
85e6fe83
LW		 3011 if (
3012#ifdef HAS_SETREUID
b28d0864 3013 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3014#else
3015# if HAS_SETRESUID
b28d0864 3016 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3017# endif
85e6fe83 3018#endif
b28d0864 3019 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3020 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3021 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3022 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3023#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3024 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3025 Perl_croak(aTHX_ "Permission denied");
104d25b7 3026#endif
b28d0864
NIS		 3027 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3028 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3029 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3030 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3031 }
85e6fe83
LW		 3032 if (
3033#ifdef HAS_SETREUID
b28d0864 3034 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3035#else
3036# if defined(HAS_SETRESUID)
b28d0864 3037 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3038# endif
85e6fe83 3039#endif
b28d0864 3040 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3041 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3042 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3043 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3044 }
fe14fcc3 3045#endif /* HAS_SETREUID */
a687059c
LW		 3046#endif /* IAMSUID */
3047
b28d0864 3048 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3049 Perl_croak(aTHX_ "Permission denied");
b28d0864 3050 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3051 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3052 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3053 CopLINE_inc(PL_curcop);
6b88bc9c 3054 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3055 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3056 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3057 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3058 if (*s == ' ') s++;
45d8adaa 3059 while (!isSPACE(*s)) s++;
2d8e6c8d 3060 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3061 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3062 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3063 Perl_croak(aTHX_ "Not a perl script");
a687059c 3064 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3065 /*
3066 * #! arg must be what we saw above. They can invoke it by
3067 * mentioning suidperl explicitly, but they may not add any strange
3068 * arguments beyond what #! says if they do invoke suidperl that way.
3069 */
3070 len = strlen(validarg);
3071 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3072 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3073 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3074
3075#ifndef IAMSUID
b28d0864
NIS		 3076 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3077 PL_euid == PL_statbuf.st_uid)
3078 if (!PL_do_undump)
cea2e8a9 3079 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3080FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3081#endif /* IAMSUID */
13281fa4 3082
b28d0864
NIS		 3083 if (PL_euid) { /* oops, we're not the setuid root perl */
3084 (void)PerlIO_close(PL_rsfp);
13281fa4 3085#ifndef IAMSUID
46fc3d4c 3086 /* try again */
a7cb1f99 3087 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3088 (int)PERL_REVISION, (int)PERL_VERSION,
3089 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3090#endif
cea2e8a9 3091 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3092 }
3093
b28d0864 3094 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3095#ifdef HAS_SETEGID
b28d0864 3096 (void)setegid(PL_statbuf.st_gid);
a687059c 3097#else
fe14fcc3 3098#ifdef HAS_SETREGID
b28d0864 3099 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3100#else
3101#ifdef HAS_SETRESGID
b28d0864 3102 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3103#else
b28d0864 3104 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3105#endif
3106#endif
85e6fe83 3107#endif
b28d0864 3108 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3109 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3110 }
b28d0864
NIS		 3111 if (PL_statbuf.st_mode & S_ISUID) {
3112 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3113#ifdef HAS_SETEUID
b28d0864 3114 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3115#else
fe14fcc3 3116#ifdef HAS_SETREUID
b28d0864 3117 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3118#else
3119#ifdef HAS_SETRESUID
b28d0864 3120 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3121#else
b28d0864 3122 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3123#endif
3124#endif
85e6fe83 3125#endif
b28d0864 3126 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3127 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3128 }
b28d0864 3129 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3130#ifdef HAS_SETEUID
b28d0864 3131 (void)seteuid((Uid_t)PL_uid);
a687059c 3132#else
fe14fcc3 3133#ifdef HAS_SETREUID
b28d0864 3134 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3135#else
85e6fe83 3136#ifdef HAS_SETRESUID
b28d0864 3137 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3138#else
b28d0864 3139 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3140#endif
a687059c
LW		 3141#endif
3142#endif
b28d0864 3143 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3144 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3145 }
748a9306 3146 init_ids();
b28d0864 3147 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3148 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3149 }
3150#ifdef IAMSUID
6b88bc9c 3151 else if (PL_preprocess)
cea2e8a9 3152 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3153 else if (fdscript >= 0)
cea2e8a9 3154 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3155 else
cea2e8a9 3156 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3157
3158 /* We absolutely must clear out any saved ids here, so we */
3159 /* exec the real perl, substituting fd script for scriptname. */
3160 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3161 PerlIO_rewind(PL_rsfp);
3162 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3163 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3164 if (!PL_origargv[which])
cea2e8a9
GS		 3165 Perl_croak(aTHX_ "Permission denied");
3166 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3167 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3168#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3169 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3170#endif
a7cb1f99 3171 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3172 (int)PERL_REVISION, (int)PERL_VERSION,
3173 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3174 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3175#endif /* IAMSUID */
a687059c 3176#else /* !DOSUID */
3280af22 3177 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3178#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3179 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3180 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3181 ||
b28d0864 3182 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3183 )
b28d0864 3184 if (!PL_do_undump)
cea2e8a9 3185 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3186FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3187#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3188 /* not set-id, must be wrapped */
a687059c 3189 }
13281fa4 3190#endif /* DOSUID */
79072805 3191}
13281fa4 3192
76e3520e 3193STATIC void
cea2e8a9 3194S_find_beginning(pTHX)
79072805 3195{
6e72f9df 3196 register char *s, *s2;
33b78306
LW		 3197
3198 /* skip forward in input to the real script? */
3199
bbce6d69 3200 forbid_setid("-x");
bf4acbe4 3201#ifdef MACOS_TRADITIONAL
084592ab 3202 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3203
bf4acbe4
GS		 3204 while (PL_doextract || gMacPerl_AlwaysExtract) {
3205 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3206 if (!gMacPerl_AlwaysExtract)
3207 Perl_croak(aTHX_ "No Perl script found in input\n");
3208
3209 if (PL_doextract) /* require explicit override ? */
3210 if (!OverrideExtract(PL_origfilename))
3211 Perl_croak(aTHX_ "User aborted script\n");
3212 else
3213 PL_doextract = FALSE;
3214
3215 /* Pater peccavi, file does not have #! */
3216 PerlIO_rewind(PL_rsfp);
ac27b0f5 3217
bf4acbe4
GS		 3218 break;
3219 }
3220#else
3280af22
NIS		 3221 while (PL_doextract) {
3222 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3223 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3224#endif
4f0c37ba
IZ		 3225 s2 = s;
3226 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3227 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3228 PL_doextract = FALSE;
6e72f9df 3229 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3230 s2 = s;
3231 while (*s == ' ' || *s == '\t') s++;
3232 if (*s++ == '-') {
3233 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3234 if (strnEQ(s2-4,"perl",4))
3235 /*SUPPRESS 530*/
155aba94
GS		 3236 while ((s = moreswitches(s)))
3237 ;
33b78306 3238 }
95e8664e
CN		 3239#ifdef MACOS_TRADITIONAL
3240 break;
3241#endif
83025b21
LW		 3242 }
3243 }
3244}
3245
afe37c7d 3246
76e3520e 3247STATIC void
cea2e8a9 3248S_init_ids(pTHX)
352d5a3a 3249{
d8eceb89
JH		 3250 PL_uid = PerlProc_getuid();
3251 PL_euid = PerlProc_geteuid();
3252 PL_gid = PerlProc_getgid();
3253 PL_egid = PerlProc_getegid();
748a9306 3254#ifdef VMS
b28d0864
NIS		 3255 PL_uid |= PL_gid << 16;
3256 PL_euid |= PL_egid << 16;
748a9306 3257#endif
3280af22 3258 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3259}
79072805 3260
76e3520e 3261STATIC void
cea2e8a9 3262S_forbid_setid(pTHX_ char *s)
bbce6d69 3263{
3280af22 3264 if (PL_euid != PL_uid)
cea2e8a9 3265 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3266 if (PL_egid != PL_gid)
cea2e8a9 3267 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3268}
3269
1ee4443e
IZ		 3270void
3271Perl_init_debugger(pTHX)
748a9306 3272{
1ee4443e
IZ		 3273 HV *ostash = PL_curstash;
3274
3280af22
NIS		 3275 PL_curstash = PL_debstash;
3276 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3277 AvREAL_off(PL_dbargs);
3278 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3279 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3280 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3281 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3282 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3283 sv_setiv(PL_DBsingle, 0);
3280af22 3284 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3285 sv_setiv(PL_DBtrace, 0);
3280af22 3286 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3287 sv_setiv(PL_DBsignal, 0);
1ee4443e 3288 PL_curstash = ostash;
352d5a3a
LW		 3289}
3290
2ce36478
SM		 3291#ifndef STRESS_REALLOC
3292#define REASONABLE(size) (size)
3293#else
3294#define REASONABLE(size) (1) /* unreasonable */
3295#endif
3296
11343788 3297void
cea2e8a9 3298Perl_init_stacks(pTHX)
79072805 3299{
e336de0d 3300 /* start with 128-item stack and 8K cxstack */
3280af22 3301 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3302 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3303 PL_curstackinfo->si_type = PERLSI_MAIN;
3304 PL_curstack = PL_curstackinfo->si_stack;
3305 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3306
3280af22
NIS		 3307 PL_stack_base = AvARRAY(PL_curstack);
3308 PL_stack_sp = PL_stack_base;
3309 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3310
3280af22
NIS		 3311 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3312 PL_tmps_floor = -1;
3313 PL_tmps_ix = -1;
3314 PL_tmps_max = REASONABLE(128);
8990e307 3315
3280af22
NIS		 3316 New(54,PL_markstack,REASONABLE(32),I32);
3317 PL_markstack_ptr = PL_markstack;
3318 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3319
ce2f7c3b 3320 SET_MARK_OFFSET;
e336de0d 3321
3280af22
NIS		 3322 New(54,PL_scopestack,REASONABLE(32),I32);
3323 PL_scopestack_ix = 0;
3324 PL_scopestack_max = REASONABLE(32);
79072805 3325
3280af22
NIS		 3326 New(54,PL_savestack,REASONABLE(128),ANY);
3327 PL_savestack_ix = 0;
3328 PL_savestack_max = REASONABLE(128);
79072805 3329
3280af22
NIS		 3330 New(54,PL_retstack,REASONABLE(16),OP*);
3331 PL_retstack_ix = 0;
3332 PL_retstack_max = REASONABLE(16);
378cc40b 3333}
33b78306 3334
2ce36478
SM		 3335#undef REASONABLE
3336
76e3520e 3337STATIC void
cea2e8a9 3338S_nuke_stacks(pTHX)
6e72f9df 3339{
3280af22
NIS		 3340 while (PL_curstackinfo->si_next)
3341 PL_curstackinfo = PL_curstackinfo->si_next;
3342 while (PL_curstackinfo) {
3343 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3344 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3345 Safefree(PL_curstackinfo->si_cxstack);
3346 Safefree(PL_curstackinfo);
3347 PL_curstackinfo = p;
e336de0d 3348 }
3280af22
NIS		 3349 Safefree(PL_tmps_stack);
3350 Safefree(PL_markstack);
3351 Safefree(PL_scopestack);
3352 Safefree(PL_savestack);
3353 Safefree(PL_retstack);
378cc40b 3354}
33b78306 3355
76e3520e 3356#ifndef PERL_OBJECT
760ac839 3357static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3358#endif
7aa04957 3359
76e3520e 3360STATIC void
cea2e8a9 3361S_init_lexer(pTHX)
8990e307 3362{
76e3520e
GS		 3363#ifdef PERL_OBJECT
3364 PerlIO *tmpfp;
3365#endif
3280af22
NIS		 3366 tmpfp = PL_rsfp;
3367 PL_rsfp = Nullfp;
3368 lex_start(PL_linestr);
3369 PL_rsfp = tmpfp;
79cb57f6 3370 PL_subname = newSVpvn("main",4);
8990e307
LW		 3371}
3372
76e3520e 3373STATIC void
cea2e8a9 3374S_init_predump_symbols(pTHX)
45d8adaa 3375{
93a17b20 3376 GV *tmpgv;
af8c498a 3377 IO *io;
79072805 3378
864dbfa3 3379 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3380 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3381 GvMULTI_on(PL_stdingv);
af8c498a 3382 io = GvIOp(PL_stdingv);
a04651f4 3383 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3384 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3385 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3386 GvMULTI_on(tmpgv);
af8c498a 3387 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3388
85e6fe83 3389 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3390 GvMULTI_on(tmpgv);
af8c498a 3391 io = GvIOp(tmpgv);
a04651f4 3392 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3393 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3394 setdefout(tmpgv);
adbc6bb1 3395 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3396 GvMULTI_on(tmpgv);
af8c498a 3397 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3398
bf49b057
GS		 3399 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3400 GvMULTI_on(PL_stderrgv);
3401 io = GvIOp(PL_stderrgv);
a04651f4 3402 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3403 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3404 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3405 GvMULTI_on(tmpgv);
af8c498a 3406 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3407
3280af22 3408 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3409
bf4acbe4
GS		 3410 if (PL_osname)
3411 Safefree(PL_osname);
3412 PL_osname = savepv(OSNAME);
79072805 3413}
33b78306 3414
76e3520e 3415STATIC void
cea2e8a9 3416S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3417{
79072805
LW		 3418 char *s;
3419 SV *sv;
3420 GV* tmpgv;
9cbac4c7 3421#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3422 char **dup_env_base = 0;
103a7189 3423 int dup_env_count = 0;
9cbac4c7 3424#endif
fe14fcc3 3425
79072805 3426 argc--,argv++; /* skip name of script */
3280af22 3427 if (PL_doswitches) {
79072805
LW		 3428 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3429 if (!argv[0][1])
3430 break;
379d538a 3431 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3432 argc--,argv++;
3433 break;
3434 }
155aba94 3435 if ((s = strchr(argv[0], '='))) {
79072805 3436 *s++ = '\0';
85e6fe83 3437 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3438 }
3439 else
85e6fe83 3440 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3441 }
79072805 3442 }
3280af22
NIS		 3443 PL_toptarget = NEWSV(0,0);
3444 sv_upgrade(PL_toptarget, SVt_PVFM);
3445 sv_setpvn(PL_toptarget, "", 0);
3446 PL_bodytarget = NEWSV(0,0);
3447 sv_upgrade(PL_bodytarget, SVt_PVFM);
3448 sv_setpvn(PL_bodytarget, "", 0);
3449 PL_formtarget = PL_bodytarget;
79072805 3450
bbce6d69 3451 TAINT;
155aba94 3452 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3453#ifdef MACOS_TRADITIONAL
3454 /* $0 is not majick on a Mac */
3455 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3456#else
3280af22 3457 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3458 magicname("0", "0", 1);
bf4acbe4 3459#endif
79072805 3460 }
155aba94 3461 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3462#ifdef OS2
23da6c43 3463 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3464#else
3280af22 3465 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3466#endif
155aba94 3467 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3468 GvMULTI_on(PL_argvgv);
3469 (void)gv_AVadd(PL_argvgv);
3470 av_clear(GvAVn(PL_argvgv));
79072805 3471 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3472 SV *sv = newSVpv(argv[0],0);
3473 av_push(GvAVn(PL_argvgv),sv);
3474 if (PL_widesyscalls)
e84ff256 3475 (void)sv_utf8_decode(sv);
79072805
LW		 3476 }
3477 }
155aba94 3478 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3479 HV *hv;
3280af22
NIS		 3480 GvMULTI_on(PL_envgv);
3481 hv = GvHVn(PL_envgv);
14befaf4 3482 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3483#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3484 /* Note that if the supplied env parameter is actually a copy
3485 of the global environ then it may now point to free'd memory
3486 if the environment has been modified since. To avoid this
3487 problem we treat env==NULL as meaning 'use the default'
3488 */
3489 if (!env)
3490 env = environ;
5aabfad6 3491 if (env != environ)
79072805 3492 environ[0] = Nullch;
103a7189
JH		 3493#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3494 {
3495 char **env_base;
9041c2e3 3496 for (env_base = env; *env; env++)
103a7189
JH		 3497 dup_env_count++;
3498 if ((dup_env_base = (char **)
480bfd1e 3499 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3500 char **dup_env;
3501 for (env = env_base, dup_env = dup_env_base;
3502 *env;
480bfd1e
JH		 3503 env++, dup_env++) {
3504 /* With environ one needs to use safesysmalloc(). */
3505 *dup_env = safesysmalloc(strlen(*env) + 1);
3506 (void)strcpy(*dup_env, *env);
3507 }
103a7189
JH		 3508 *dup_env = Nullch;
3509 env = dup_env_base;
3510 } /* else what? */
3511 }
3512#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3513 if (env)
3514 for (; *env; env++) {
93a17b20 3515 if (!(s = strchr(*env,'=')))
79072805
LW		 3516 continue;
3517 *s++ = '\0';
60ce6247 3518#if defined(MSDOS)
137443ea 3519 (void)strupr(*env);
3520#endif
79072805
LW		 3521 sv = newSVpv(s--,0);
3522 (void)hv_store(hv, *env, s - *env, sv, 0);
3523 *s = '=';
764df951 3524 }
480bfd1e 3525#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3526 if (dup_env_base) {
3527 char **dup_env;
3528 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3529 safesysfree(*dup_env);
3530 safesysfree(dup_env_base);
103a7189 3531 }
7e0f6a1f 3532#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3533#endif /* USE_ENVIRON_ARRAY */
79072805 3534 }
bbce6d69 3535 TAINT_NOT;
155aba94 3536 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3537 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3538}
34de22dd 3539
76e3520e 3540STATIC void
cea2e8a9 3541S_init_perllib(pTHX)
34de22dd 3542{
85e6fe83 3543 char *s;
3280af22 3544 if (!PL_tainting) {
552a7a9b 3545#ifndef VMS
76e3520e 3546 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3547 if (s)
9c8a64f0 3548 incpush(s, TRUE, TRUE);
85e6fe83 3549 else
9c8a64f0 3550 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3551#else /* VMS */
3552 /* Treat PERL5?LIB as a possible search list logical name -- the
3553 * "natural" VMS idiom for a Unix path string. We allow each
3554 * element to be a set of |-separated directories for compatibility.
3555 */
3556 char buf[256];
3557 int idx = 0;
3558 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3559 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3560 else
9c8a64f0 3561 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3562#endif /* VMS */
85e6fe83 3563 }
34de22dd 3564
c90c0ff4 3565/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3566 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3567*/
4633a7c4 3568#ifdef APPLLIB_EXP
9c8a64f0 3569 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3570#endif
4633a7c4 3571
fed7345c 3572#ifdef ARCHLIB_EXP
9c8a64f0 3573 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3574#endif
bf4acbe4
GS		 3575#ifdef MACOS_TRADITIONAL
3576 {
3577 struct stat tmpstatbuf;
3578 SV * privdir = NEWSV(55, 0);
3579 char * macperl = PerlEnv_getenv("MACPERL");
3580
3581 if (!macperl)
3582 macperl = "";
3583
3584 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3585 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3586 incpush(SvPVX(privdir), TRUE, FALSE);
3587 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3588 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3589 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3590
bf4acbe4
GS		 3591 SvREFCNT_dec(privdir);
3592 }
3593 if (!PL_tainting)
3594 incpush(":", FALSE, FALSE);
3595#else
fed7345c 3596#ifndef PRIVLIB_EXP
65f19062 3597# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3598#endif
ac27b0f5 3599#if defined(WIN32)
9c8a64f0 3600 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3601#else
9c8a64f0 3602 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3603#endif
4633a7c4 3604
65f19062 3605#ifdef SITEARCH_EXP
3b290362
GS		 3606 /* sitearch is always relative to sitelib on Windows for
3607 * DLL-based path intuition to work correctly */
3608# if !defined(WIN32)
9c8a64f0 3609 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3610# endif
3611#endif
3612
4633a7c4 3613#ifdef SITELIB_EXP
65f19062 3614# if defined(WIN32)
9c8a64f0 3615 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3616# else
9c8a64f0 3617 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3618# endif
3619#endif
189d1e8d 3620
65f19062 3621#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3622 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3623#endif
65f19062
GS		 3624
3625#ifdef PERL_VENDORARCH_EXP
4ea817c6 3626 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3627 * DLL-based path intuition to work correctly */
3628# if !defined(WIN32)
9c8a64f0 3629 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3630# endif
4b03c463 3631#endif
65f19062
GS		 3632
3633#ifdef PERL_VENDORLIB_EXP
3634# if defined(WIN32)
9c8a64f0 3635 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3636# else
9c8a64f0 3637 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3638# endif
a3635516 3639#endif
65f19062
GS		 3640
3641#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3642 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3643#endif
65f19062 3644
3b777bb4
GS		 3645#ifdef PERL_OTHERLIBDIRS
3646 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3647#endif
3648
3280af22 3649 if (!PL_tainting)
9c8a64f0 3650 incpush(".", FALSE, FALSE);
bf4acbe4 3651#endif /* MACOS_TRADITIONAL */
774d564b 3652}
3653
ed79a026 3654#if defined(DOSISH) || defined(EPOC)
774d564b 3655# define PERLLIB_SEP ';'
3656#else
3657# if defined(VMS)
3658# define PERLLIB_SEP '|'
3659# else
bf4acbe4
GS		 3660# if defined(MACOS_TRADITIONAL)
3661# define PERLLIB_SEP ','
3662# else
3663# define PERLLIB_SEP ':'
3664# endif
774d564b 3665# endif
3666#endif
3667#ifndef PERLLIB_MANGLE
3668# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3669#endif
774d564b 3670
76e3520e 3671STATIC void
9c8a64f0 3672S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3673{
3674 SV *subdir = Nullsv;
774d564b 3675
3b290362 3676 if (!p || !*p)
774d564b 3677 return;
3678
9c8a64f0 3679 if (addsubdirs || addoldvers) {
00db4c45 3680 subdir = sv_newmortal();
774d564b 3681 }
3682
3683 /* Break at all separators */
3684 while (p && *p) {
8c52afec 3685 SV *libdir = NEWSV(55,0);
774d564b 3686 char *s;
3687
3688 /* skip any consecutive separators */
3689 while ( *p == PERLLIB_SEP ) {
3690 /* Uncomment the next line for PATH semantics */
79cb57f6 3691 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3692 p++;
3693 }
3694
3695 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3696 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3697 (STRLEN)(s - p));
3698 p = s + 1;
3699 }
3700 else {
3701 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3702 p = Nullch; /* break out */
3703 }
bf4acbe4
GS		 3704#ifdef MACOS_TRADITIONAL
3705 if (!strchr(SvPVX(libdir), ':'))
3706 sv_insert(libdir, 0, 0, ":", 1);
3707 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3708 sv_catpv(libdir, ":");
3709#endif
774d564b 3710
3711 /*
3712 * BEFORE pushing libdir onto @INC we may first push version- and
3713 * archname-specific sub-directories.
3714 */
9c8a64f0 3715 if (addsubdirs || addoldvers) {
29d82f8d 3716#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3717 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3718 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3719 const char **incver;
3720#endif
774d564b 3721 struct stat tmpstatbuf;
aa689395 3722#ifdef VMS
3723 char *unix;
3724 STRLEN len;
774d564b 3725
2d8e6c8d 3726 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3727 len = strlen(unix);
3728 while (unix[len-1] == '/') len--; /* Cosmetic */
3729 sv_usepvn(libdir,unix,len);
3730 }
3731 else
bf49b057 3732 PerlIO_printf(Perl_error_log,
aa689395 3733 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3734 SvPV(libdir,len));
aa689395 3735#endif
9c8a64f0 3736 if (addsubdirs) {
bf4acbe4
GS		 3737#ifdef MACOS_TRADITIONAL
3738#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3739#define PERL_ARCH_FMT "%s:"
3740#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3741#else
3742#define PERL_AV_SUFFIX_FMT "/"
3743#define PERL_ARCH_FMT "/%s"
084592ab 3744#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3745#endif
9c8a64f0 3746 /* .../version/archname if -d .../version/archname */
084592ab 3747 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3748 libdir,
3749 (int)PERL_REVISION, (int)PERL_VERSION,
3750 (int)PERL_SUBVERSION, ARCHNAME);
3751 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3752 S_ISDIR(tmpstatbuf.st_mode))
3753 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3754
9c8a64f0 3755 /* .../version if -d .../version */
084592ab 3756 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3757 (int)PERL_REVISION, (int)PERL_VERSION,
3758 (int)PERL_SUBVERSION);
3759 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3760 S_ISDIR(tmpstatbuf.st_mode))
3761 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3762
3763 /* .../archname if -d .../archname */
bf4acbe4 3764 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3765 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3766 S_ISDIR(tmpstatbuf.st_mode))
3767 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3768 }
9c8a64f0 3769
9c8a64f0 3770#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3771 if (addoldvers) {
9c8a64f0
GS		 3772 for (incver = incverlist; *incver; incver++) {
3773 /* .../xxx if -d .../xxx */
bf4acbe4 3774 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3775 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3776 S_ISDIR(tmpstatbuf.st_mode))
3777 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3778 }
3779 }
29d82f8d 3780#endif
774d564b 3781 }
3782
3783 /* finally push this lib directory on the end of @INC */
3280af22 3784 av_push(GvAVn(PL_incgv), libdir);
774d564b 3785 }
34de22dd 3786}
93a17b20 3787
199100c8 3788#ifdef USE_THREADS
76e3520e 3789STATIC struct perl_thread *
cea2e8a9 3790S_init_main_thread(pTHX)
199100c8 3791{
c5be433b 3792#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3793 struct perl_thread *thr;
cea2e8a9 3794#endif
199100c8
MB		 3795 XPV *xpv;
3796
52e1cb5e 3797 Newz(53, thr, 1, struct perl_thread);
533c011a 3798 PL_curcop = &PL_compiling;
c5be433b 3799 thr->interp = PERL_GET_INTERP;
199100c8 3800 thr->cvcache = newHV();
54b9620d 3801 thr->threadsv = newAV();
940cb80d 3802 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3803 thr->specific = newAV();
3804 thr->flags = THRf_R_JOINABLE;
3805 MUTEX_INIT(&thr->mutex);
3806 /* Handcraft thrsv similarly to mess_sv */
533c011a 3807 New(53, PL_thrsv, 1, SV);
199100c8 3808 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3809 SvFLAGS(PL_thrsv) = SVt_PV;
3810 SvANY(PL_thrsv) = (void*)xpv;
3811 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3812 SvPVX(PL_thrsv) = (char*)thr;
3813 SvCUR_set(PL_thrsv, sizeof(thr));
3814 SvLEN_set(PL_thrsv, sizeof(thr));
3815 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3816 thr->oursv = PL_thrsv;
3817 PL_chopset = " \n-";
3967c732 3818 PL_dumpindent = 4;
533c011a
NIS		 3819
3820 MUTEX_LOCK(&PL_threads_mutex);
3821 PL_nthreads++;
199100c8
MB		 3822 thr->tid = 0;
3823 thr->next = thr;
3824 thr->prev = thr;
8dcd6f7b 3825 thr->thr_done = 0;
533c011a 3826 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3827
4b026b9e 3828#ifdef HAVE_THREAD_INTERN
4f63d024 3829 Perl_init_thread_intern(thr);
235db74f
GS		 3830#endif
3831
3832#ifdef SET_THREAD_SELF
3833 SET_THREAD_SELF(thr);
199100c8
MB		 3834#else
3835 thr->self = pthread_self();
235db74f 3836#endif /* SET_THREAD_SELF */
06d86050 3837 PERL_SET_THX(thr);
199100c8
MB		 3838
3839 /*
411caa50
JH		 3840 * These must come after the thread self setting
3841 * because sv_setpvn does SvTAINT and the taint
3842 * fields thread selfness being set.
199100c8 3843 */
533c011a
NIS		 3844 PL_toptarget = NEWSV(0,0);
3845 sv_upgrade(PL_toptarget, SVt_PVFM);
3846 sv_setpvn(PL_toptarget, "", 0);
3847 PL_bodytarget = NEWSV(0,0);
3848 sv_upgrade(PL_bodytarget, SVt_PVFM);
3849 sv_setpvn(PL_bodytarget, "", 0);
3850 PL_formtarget = PL_bodytarget;
79cb57f6 3851 thr->errsv = newSVpvn("", 0);
78857c3c 3852 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3853
533c011a 3854 PL_maxscream = -1;
a2efc822 3855 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3856 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3857 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3858 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3859 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3860 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3861 PL_regindent = 0;
3862 PL_reginterp_cnt = 0;
5c0ca799 3863
199100c8
MB		 3864 return thr;
3865}
3866#endif /* USE_THREADS */
3867
93a17b20 3868void
864dbfa3 3869Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3870{
971a9dd3 3871 SV *atsv;
57843af0 3872 line_t oldline = CopLINE(PL_curcop);
312caa8e 3873 CV *cv;
22921e25 3874 STRLEN len;
6224f72b 3875 int ret;
db36c5a1 3876 dJMPENV;
93a17b20 3877
76e3520e 3878 while (AvFILL(paramList) >= 0) {
312caa8e 3879 cv = (CV*)av_shift(paramList);
aefff11f 3880 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3881 /* save PL_beginav for compiler */
3882 if (! PL_beginav_save)
3883 PL_beginav_save = newAV();
3884 av_push(PL_beginav_save, (SV*)cv);
3885 } else {
3886 SAVEFREESV(cv);
3887 }
14dd3ad8
GS		 3888#ifdef PERL_FLEXIBLE_EXCEPTIONS
3889 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3890#else
3891 JMPENV_PUSH(ret);
3892#endif
6224f72b 3893 switch (ret) {
312caa8e 3894 case 0:
14dd3ad8
GS		 3895#ifndef PERL_FLEXIBLE_EXCEPTIONS
3896 call_list_body(cv);
3897#endif
971a9dd3 3898 atsv = ERRSV;
312caa8e
CS		 3899 (void)SvPV(atsv, len);
3900 if (len) {
971a9dd3 3901 STRLEN n_a;
312caa8e 3902 PL_curcop = &PL_compiling;
57843af0 3903 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3904 if (paramList == PL_beginav)
3905 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3906 else
4f25aa18
GS		 3907 Perl_sv_catpvf(aTHX_ atsv,
3908 "%s failed--call queue aborted",
7d30b5c4 3909 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3910 : paramList == PL_initav ? "INIT"
3911 : "END");
312caa8e
CS		 3912 while (PL_scopestack_ix > oldscope)
3913 LEAVE;
14dd3ad8 3914 JMPENV_POP;
971a9dd3 3915 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3916 }
85e6fe83 3917 break;
6224f72b 3918 case 1:
f86702cc 3919 STATUS_ALL_FAILURE;
85e6fe83 3920 /* FALL THROUGH */
6224f72b 3921 case 2:
85e6fe83 3922 /* my_exit() was called */
3280af22 3923 while (PL_scopestack_ix > oldscope)
2ae324a7 3924 LEAVE;
84902520 3925 FREETMPS;
3280af22 3926 PL_curstash = PL_defstash;
3280af22 3927 PL_curcop = &PL_compiling;
57843af0 3928 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3929 JMPENV_POP;
cc3604b1 3930 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3931 if (paramList == PL_beginav)
cea2e8a9 3932 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3933 else
4f25aa18 3934 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3935 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3936 : paramList == PL_initav ? "INIT"
3937 : "END");
85e6fe83 3938 }
f86702cc 3939 my_exit_jump();
85e6fe83 3940 /* NOTREACHED */
6224f72b 3941 case 3:
312caa8e
CS		 3942 if (PL_restartop) {
3943 PL_curcop = &PL_compiling;
57843af0 3944 CopLINE_set(PL_curcop, oldline);
312caa8e 3945 JMPENV_JUMP(3);
85e6fe83 3946 }
bf49b057 3947 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3948 FREETMPS;
3949 break;
8990e307 3950 }
14dd3ad8 3951 JMPENV_POP;
93a17b20 3952 }
93a17b20 3953}
93a17b20 3954
14dd3ad8 3955#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3956STATIC void *
14dd3ad8 3957S_vcall_list_body(pTHX_ va_list args)
312caa8e 3958{
312caa8e 3959 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3960 return call_list_body(cv);
3961}
3962#endif
312caa8e 3963
14dd3ad8
GS		 3964STATIC void *
3965S_call_list_body(pTHX_ CV *cv)
3966{
312caa8e 3967 PUSHMARK(PL_stack_sp);
864dbfa3 3968 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3969 return NULL;
3970}
3971
f86702cc 3972void
864dbfa3 3973Perl_my_exit(pTHX_ U32 status)
f86702cc 3974{
8b73bbec 3975 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3976 thr, (unsigned long) status));
f86702cc 3977 switch (status) {
3978 case 0:
3979 STATUS_ALL_SUCCESS;
3980 break;
3981 case 1:
3982 STATUS_ALL_FAILURE;
3983 break;
3984 default:
3985 STATUS_NATIVE_SET(status);
3986 break;
3987 }
3988 my_exit_jump();
3989}
3990
3991void
864dbfa3 3992Perl_my_failure_exit(pTHX)
f86702cc 3993{
3994#ifdef VMS
3995 if (vaxc$errno & 1) {
4fdae800 3996 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3997 STATUS_NATIVE_SET(44);
f86702cc 3998 }
3999 else {
ff0cee69 4000 if (!vaxc$errno && errno) /* unlikely */
4fdae800 4001 STATUS_NATIVE_SET(44);
f86702cc 4002 else
4fdae800 4003 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 4004 }
4005#else
9b599b2a 4006 int exitstatus;
f86702cc 4007 if (errno & 255)
4008 STATUS_POSIX_SET(errno);
9b599b2a 4009 else {
ac27b0f5 4010 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 4011 if (exitstatus & 255)
4012 STATUS_POSIX_SET(exitstatus);
4013 else
4014 STATUS_POSIX_SET(255);
4015 }
f86702cc 4016#endif
4017 my_exit_jump();
93a17b20
LW		 4018}
4019
76e3520e 4020STATIC void
cea2e8a9 4021S_my_exit_jump(pTHX)
f86702cc 4022{
c09156bb 4023 register PERL_CONTEXT *cx;
f86702cc 4024 I32 gimme;
4025 SV **newsp;
4026
3280af22
NIS		 4027 if (PL_e_script) {
4028 SvREFCNT_dec(PL_e_script);
4029 PL_e_script = Nullsv;
f86702cc 4030 }
4031
3280af22 4032 POPSTACK_TO(PL_mainstack);
f86702cc 4033 if (cxstack_ix >= 0) {
4034 if (cxstack_ix > 0)
4035 dounwind(0);
3280af22 4036 POPBLOCK(cx,PL_curpm);
f86702cc 4037 LEAVE;
4038 }
ff0cee69 4039
6224f72b 4040 JMPENV_JUMP(2);
f86702cc 4041}
873ef191 4042
7a5f8e82 4043#ifdef PERL_OBJECT
873ef191 4044#include "XSUB.h"
51371543 4045#endif
873ef191 4046
0cb96387
GS		 4047static I32
4048read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 4049{
4050 char *p, *nl;
3280af22 4051 p = SvPVX(PL_e_script);
873ef191 4052 nl = strchr(p, '\n');
3280af22 4053 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4054 if (nl-p == 0) {
0cb96387 4055 filter_del(read_e_script);
873ef191 4056 return 0;
7dfe3f66 4057 }
873ef191 4058 sv_catpvn(buf_sv, p, nl-p);
3280af22 4059 sv_chop(PL_e_script, nl);
873ef191
GS		 4060 return 1;
4061}
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