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Removed reference of -DPERL_CUSTOM_OPS in the documentation.
[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
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 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
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS		 43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS		 59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS		 65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS		 77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS		 79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS		 86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS		 89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS		 91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS		 93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS		 100 return my_perl;
101}
102#else
954c1994
GS		 103
104/*
105=for apidoc perl_alloc
106
107Allocates a new Perl interpreter. See L<perlembed>.
108
109=cut
110*/
111
93a17b20 112PerlInterpreter *
cea2e8a9 113perl_alloc(void)
79072805 114{
cea2e8a9 115 PerlInterpreter *my_perl;
79072805 116
54aff467 117 /* New() needs interpreter, so call malloc() instead */
e8ee3774 118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 119
06d86050 120 INIT_TLS_AND_INTERP;
dedcbb81 121 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 122 return my_perl;
79072805 123}
32e30700 124#endif /* PERL_IMPLICIT_SYS */
79072805 125
954c1994
GS		 126/*
127=for apidoc perl_construct
128
129Initializes a new Perl interpreter. See L<perlembed>.
130
131=cut
132*/
133
79072805 134void
0cb96387 135perl_construct(pTHXx)
79072805 136{
4d1ff10f 137#ifdef USE_5005THREADS
a863c7d1 138#ifndef FAKE_THREADS
e1f15930 139 struct perl_thread *thr = NULL;
a863c7d1 140#endif /* FAKE_THREADS */
4d1ff10f 141#endif /* USE_5005THREADS */
ba869deb 142
8990e307 143#ifdef MULTIPLICITY
54aff467 144 init_interp();
ac27b0f5 145 PL_perl_destruct_level = 1;
54aff467
GS		 146#else
147 if (PL_perl_destruct_level > 0)
148 init_interp();
149#endif
150
33f46ff6 151 /* Init the real globals (and main thread)? */
3280af22 152 if (!PL_linestr) {
4d1ff10f 153#ifdef USE_5005THREADS
533c011a 154 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 155 /*
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
158 */
533c011a
NIS		 159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
ba869deb 163# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 164 MUTEX_INIT(&PL_svref_mutex);
ba869deb 165# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 166
5ff3f7a4 167 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 170
199100c8 171 thr = init_main_thread();
4d1ff10f 172#endif /* USE_5005THREADS */
11343788 173
14dd3ad8 174#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 176#endif
312caa8e 177
2aea9f8a
GS		 178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
179
3280af22
NIS		 180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 182
3280af22 183 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 184 /* set read-only and try to insure than we wont see REFCNT==0
185 very often */
186
3280af22
NIS		 187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 189
3280af22
NIS		 190 sv_setpv(&PL_sv_no,PL_No);
191 SvNV(&PL_sv_no);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 194
3280af22
NIS		 195 sv_setpv(&PL_sv_yes,PL_Yes);
196 SvNV(&PL_sv_yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 199 }
79072805 200
cea2e8a9 201 PL_sighandlerp = Perl_sighandler;
3280af22 202 PL_pidstatus = newHV();
44a8e56a 203
79072805
LW		 204#ifdef MSDOS
205 /*
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
208 * filehandles.
209 */
2b96b0a5
JH		 210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 212#endif
213 }
214
79cb57f6 215 PL_nrs = newSVpvn("\n", 1);
3280af22 216 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 217
cea2e8a9 218 init_stacks();
79072805 219
748a9306 220 init_ids();
3280af22 221 PL_lex_state = LEX_NOTPARSING;
a5f75d66 222
312caa8e 223 JMPENV_BOOTSTRAP;
f86702cc 224 STATUS_ALL_SUCCESS;
225
0672f40e 226 init_i18nl10n(1);
36477c24 227 SET_NUMERIC_STANDARD();
0b5b802d 228
a7cb1f99
GS		 229 {
230 U8 *s;
231 PL_patchlevel = NEWSV(0,4);
155aba94 232 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 233 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 234 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 235 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 236 /* Build version strings using "native" characters */
237 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
238 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
239 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 240 *s = '\0';
241 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
242 SvPOK_on(PL_patchlevel);
243 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
244 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 245#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 246 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 247#endif
a7cb1f99
GS		 248 ;
249 SvNOK_on(PL_patchlevel); /* dual valued */
250 SvUTF8_on(PL_patchlevel);
251 SvREADONLY_on(PL_patchlevel);
252 }
79072805 253
ab821d7f 254#if defined(LOCAL_PATCH_COUNT)
3280af22 255 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 256#endif
257
52853b95
GS		 258#ifdef HAVE_INTERP_INTERN
259 sys_intern_init();
260#endif
261
4b556e6c 262 PerlIO_init(); /* Hook to IO system */
760ac839 263
3280af22
NIS		 264 PL_fdpid = newAV(); /* for remembering popen pids by fd */
265 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 266 PL_errors = newSVpvn("",0);
1fcf4c12 267#ifdef USE_ITHREADS
13137afc
AB		 268 PL_regex_padav = newAV();
269 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
270 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 271#endif
e5dd39fc
AB		 272#ifdef USE_REENTRANT_API
273 New(31337, PL_reentrant_buffer,1, REBUF);
274 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
275#endif
8990e307 276 ENTER;
79072805
LW		 277}
278
954c1994
GS		 279/*
280=for apidoc perl_destruct
281
282Shuts down a Perl interpreter. See L<perlembed>.
283
284=cut
285*/
286
31d77e54 287int
0cb96387 288perl_destruct(pTHXx)
79072805 289{
7c474504 290 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 291 HV *hv;
4d1ff10f 292#ifdef USE_5005THREADS
33f46ff6 293 Thread t;
cea2e8a9 294 dTHX;
4d1ff10f 295#endif /* USE_5005THREADS */
8990e307 296
7766f137
GS		 297 /* wait for all pseudo-forked children to finish */
298 PERL_WAIT_FOR_CHILDREN;
299
4d1ff10f 300#ifdef USE_5005THREADS
0f15f207 301#ifndef FAKE_THREADS
8023c3ce
MB		 302 /* Pass 1 on any remaining threads: detach joinables, join zombies */
303 retry_cleanup:
533c011a 304 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 305 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 306 "perl_destruct: waiting for %d threads...\n",
533c011a 307 PL_nthreads - 1));
33f46ff6 308 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 309 MUTEX_LOCK(&t->mutex);
310 switch (ThrSTATE(t)) {
311 AV *av;
c7848ba1 312 case THRf_ZOMBIE:
bf49b057 313 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 314 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 315 ThrSETSTATE(t, THRf_DEAD);
316 MUTEX_UNLOCK(&t->mutex);
533c011a 317 PL_nthreads--;
8023c3ce
MB		 318 /*
319 * The SvREFCNT_dec below may take a long time (e.g. av
320 * may contain an object scalar whose destructor gets
321 * called) so we have to unlock threads_mutex and start
322 * all over again.
323 */
533c011a 324 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 325 JOIN(t, &av);
605e5515 326 SvREFCNT_dec((SV*)av);
bf49b057 327 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 328 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 329 goto retry_cleanup;
c7848ba1 330 case THRf_R_JOINABLE:
bf49b057 331 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 332 "perl_destruct: detaching thread %p\n", t));
333 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 334 /*
c7848ba1
MB		 335 * We unlock threads_mutex and t->mutex in the opposite order
336 * from which we locked them just so that DETACH won't
337 * deadlock if it panics. It's only a breach of good style
338 * not a bug since they are unlocks not locks.
339 */
533c011a 340 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 341 DETACH(t);
342 MUTEX_UNLOCK(&t->mutex);
8023c3ce 343 goto retry_cleanup;
c7848ba1 344 default:
bf49b057 345 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 346 "perl_destruct: ignoring %p (state %u)\n",
347 t, ThrSTATE(t)));
348 MUTEX_UNLOCK(&t->mutex);
c7848ba1 349 /* fall through and out */
33f46ff6
MB		 350 }
351 }
8023c3ce
MB		 352 /* We leave the above "Pass 1" loop with threads_mutex still locked */
353
354 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 355 while (PL_nthreads > 1)
11343788 356 {
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 358 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 359 PL_nthreads - 1));
360 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 361 }
362 /* At this point, we're the last thread */
533c011a 363 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 364 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 365 MUTEX_DESTROY(&PL_threads_mutex);
366 COND_DESTROY(&PL_nthreads_cond);
b57a092c 367 PL_nthreads--;
0f15f207 368#endif /* !defined(FAKE_THREADS) */
4d1ff10f 369#endif /* USE_5005THREADS */
11343788 370
3280af22 371 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 372#ifdef DEBUGGING
373 {
374 char *s;
155aba94 375 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 376 int i = atoi(s);
377 if (destruct_level < i)
378 destruct_level = i;
379 }
4633a7c4
LW		 380 }
381#endif
382
31d77e54
AB		 383
384 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 385 dJMPENV;
386 int x = 0;
387
388 JMPENV_PUSH(x);
389 if (PL_endav && !PL_minus_c)
390 call_list(PL_scopestack_ix, PL_endav);
391 JMPENV_POP;
26f423df 392 }
f3faeb53 393 LEAVE;
a0d0e21e
LW		 394 FREETMPS;
395
ff0cee69 396 /* We must account for everything. */
397
398 /* Destroy the main CV and syntax tree */
3280af22
NIS		 399 if (PL_main_root) {
400 PL_curpad = AvARRAY(PL_comppad);
401 op_free(PL_main_root);
402 PL_main_root = Nullop;
a0d0e21e 403 }
3280af22
NIS		 404 PL_curcop = &PL_compiling;
405 PL_main_start = Nullop;
406 SvREFCNT_dec(PL_main_cv);
407 PL_main_cv = Nullcv;
24d3c518 408 PL_dirty = TRUE;
ff0cee69 409
13621cfb
NIS		 410 /* Tell PerlIO we are about to tear things apart in case
411 we have layers which are using resources that should
412 be cleaned up now.
413 */
414
415 PerlIO_destruct(aTHX);
416
3280af22 417 if (PL_sv_objcount) {
a0d0e21e
LW		 418 /*
419 * Try to destruct global references. We do this first so that the
420 * destructors and destructees still exist. Some sv's might remain.
421 * Non-referenced objects are on their own.
422 */
a0d0e21e 423 sv_clean_objs();
8990e307
LW		 424 }
425
5cd24f17 426 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 427 SvREFCNT_dec(PL_warnhook);
428 PL_warnhook = Nullsv;
429 SvREFCNT_dec(PL_diehook);
430 PL_diehook = Nullsv;
5cd24f17 431
4b556e6c 432 /* call exit list functions */
3280af22 433 while (PL_exitlistlen-- > 0)
acfe0abc 434 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 435
3280af22 436 Safefree(PL_exitlist);
4b556e6c 437
a0d0e21e 438 if (destruct_level == 0){
8990e307 439
a0d0e21e 440 DEBUG_P(debprofdump());
ac27b0f5 441
a0d0e21e 442 /* The exit() function will do everything that needs doing. */
31d77e54 443 return STATUS_NATIVE_EXPORT;;
a0d0e21e 444 }
5dd60ef7 445
551a8b83
JH		 446 /* jettison our possibly duplicated environment */
447
448#ifdef USE_ENVIRON_ARRAY
449 if (environ != PL_origenviron) {
450 I32 i;
451
452 for (i = 0; environ[i]; i++)
4b420006
JH		 453 safesysfree(environ[i]);
454 /* Must use safesysfree() when working with environ. */
455 safesysfree(environ);
551a8b83
JH		 456
457 environ = PL_origenviron;
458 }
459#endif
460
5f8cb046
DM		 461#ifdef USE_ITHREADS
462 /* the syntax tree is shared between clones
463 * so op_free(PL_main_root) only ReREFCNT_dec's
464 * REGEXPs in the parent interpreter
465 * we need to manually ReREFCNT_dec for the clones
466 */
467 {
468 I32 i = AvFILLp(PL_regex_padav) + 1;
469 SV **ary = AvARRAY(PL_regex_padav);
470
471 while (i) {
35061a7e
DM		 472 SV *resv = ary[--i];
473 REGEXP *re = (REGEXP *)SvIVX(resv);
474
475 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 476 /* this is PL_reg_curpm, already freed
35061a7e
DM		 477 * flag is set in regexec.c:S_regtry
478 */
479 SvFLAGS(resv) &= ~SVf_BREAK;
1cc8b4c5
AB		 480 }
481 else if(SvREPADTMP(resv)) {
482 SvREPADTMP_off(resv);
483 }
35061a7e 484 else {
5f8cb046
DM		 485 ReREFCNT_dec(re);
486 }
487 }
488 }
489 SvREFCNT_dec(PL_regex_padav);
490 PL_regex_padav = Nullav;
491 PL_regex_pad = NULL;
492#endif
493
5f05dabc 494 /* loosen bonds of global variables */
495
3280af22
NIS		 496 if(PL_rsfp) {
497 (void)PerlIO_close(PL_rsfp);
498 PL_rsfp = Nullfp;
8ebc5c01 499 }
500
501 /* Filters for program text */
3280af22
NIS		 502 SvREFCNT_dec(PL_rsfp_filters);
503 PL_rsfp_filters = Nullav;
8ebc5c01 504
505 /* switches */
3280af22
NIS		 506 PL_preprocess = FALSE;
507 PL_minus_n = FALSE;
508 PL_minus_p = FALSE;
509 PL_minus_l = FALSE;
510 PL_minus_a = FALSE;
511 PL_minus_F = FALSE;
512 PL_doswitches = FALSE;
599cee73 513 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 514 PL_doextract = FALSE;
515 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 516 PL_unsafe = FALSE;
517
518 Safefree(PL_inplace);
519 PL_inplace = Nullch;
a7cb1f99 520 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 521
522 if (PL_e_script) {
523 SvREFCNT_dec(PL_e_script);
524 PL_e_script = Nullsv;
8ebc5c01 525 }
526
bc0a45ed
DM		 527 while (--PL_origargc >= 0) {
528 Safefree(PL_origargv[PL_origargc]);
529 }
530 Safefree(PL_origargv);
531
8ebc5c01 532 /* magical thingies */
533
7889fe52
NIS		 534 SvREFCNT_dec(PL_ofs_sv); /* $, */
535 PL_ofs_sv = Nullsv;
5f05dabc 536
7889fe52
NIS		 537 SvREFCNT_dec(PL_ors_sv); /* $\ */
538 PL_ors_sv = Nullsv;
8ebc5c01 539
3280af22
NIS		 540 SvREFCNT_dec(PL_rs); /* $/ */
541 PL_rs = Nullsv;
dc92893f 542
3280af22
NIS		 543 SvREFCNT_dec(PL_nrs); /* $/ helper */
544 PL_nrs = Nullsv;
5f05dabc 545
d33b2eba
GS		 546 PL_multiline = 0; /* $* */
547 Safefree(PL_osname); /* $^O */
548 PL_osname = Nullch;
5f05dabc 549
3280af22
NIS		 550 SvREFCNT_dec(PL_statname);
551 PL_statname = Nullsv;
552 PL_statgv = Nullgv;
5f05dabc 553
8ebc5c01 554 /* defgv, aka *_ should be taken care of elsewhere */
555
8ebc5c01 556 /* clean up after study() */
3280af22
NIS		 557 SvREFCNT_dec(PL_lastscream);
558 PL_lastscream = Nullsv;
559 Safefree(PL_screamfirst);
560 PL_screamfirst = 0;
561 Safefree(PL_screamnext);
562 PL_screamnext = 0;
8ebc5c01 563
7d5ea4e7
GS		 564 /* float buffer */
565 Safefree(PL_efloatbuf);
566 PL_efloatbuf = Nullch;
567 PL_efloatsize = 0;
568
8ebc5c01 569 /* startup and shutdown function lists */
3280af22
NIS		 570 SvREFCNT_dec(PL_beginav);
571 SvREFCNT_dec(PL_endav);
7d30b5c4 572 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 573 SvREFCNT_dec(PL_initav);
574 PL_beginav = Nullav;
575 PL_endav = Nullav;
7d30b5c4 576 PL_checkav = Nullav;
3280af22 577 PL_initav = Nullav;
5618dfe8 578
8ebc5c01 579 /* shortcuts just get cleared */
3280af22 580 PL_envgv = Nullgv;
3280af22
NIS		 581 PL_incgv = Nullgv;
582 PL_hintgv = Nullgv;
583 PL_errgv = Nullgv;
584 PL_argvgv = Nullgv;
585 PL_argvoutgv = Nullgv;
586 PL_stdingv = Nullgv;
bf49b057 587 PL_stderrgv = Nullgv;
3280af22
NIS		 588 PL_last_in_gv = Nullgv;
589 PL_replgv = Nullgv;
5c831c24 590 PL_debstash = Nullhv;
8ebc5c01 591
592 /* reset so print() ends up where we expect */
593 setdefout(Nullgv);
5c831c24 594
7a1c5554
GS		 595 SvREFCNT_dec(PL_argvout_stack);
596 PL_argvout_stack = Nullav;
8ebc5c01 597
5c831c24
GS		 598 SvREFCNT_dec(PL_modglobal);
599 PL_modglobal = Nullhv;
600 SvREFCNT_dec(PL_preambleav);
601 PL_preambleav = Nullav;
602 SvREFCNT_dec(PL_subname);
603 PL_subname = Nullsv;
604 SvREFCNT_dec(PL_linestr);
605 PL_linestr = Nullsv;
606 SvREFCNT_dec(PL_pidstatus);
607 PL_pidstatus = Nullhv;
608 SvREFCNT_dec(PL_toptarget);
609 PL_toptarget = Nullsv;
610 SvREFCNT_dec(PL_bodytarget);
611 PL_bodytarget = Nullsv;
612 PL_formtarget = Nullsv;
613
d33b2eba 614 /* free locale stuff */
b9582b6a 615#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 616 Safefree(PL_collation_name);
617 PL_collation_name = Nullch;
b9582b6a 618#endif
d33b2eba 619
b9582b6a 620#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 621 Safefree(PL_numeric_name);
622 PL_numeric_name = Nullch;
a453c169 623 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 624#endif
d33b2eba 625
5c831c24
GS		 626 /* clear utf8 character classes */
627 SvREFCNT_dec(PL_utf8_alnum);
628 SvREFCNT_dec(PL_utf8_alnumc);
629 SvREFCNT_dec(PL_utf8_ascii);
630 SvREFCNT_dec(PL_utf8_alpha);
631 SvREFCNT_dec(PL_utf8_space);
632 SvREFCNT_dec(PL_utf8_cntrl);
633 SvREFCNT_dec(PL_utf8_graph);
634 SvREFCNT_dec(PL_utf8_digit);
635 SvREFCNT_dec(PL_utf8_upper);
636 SvREFCNT_dec(PL_utf8_lower);
637 SvREFCNT_dec(PL_utf8_print);
638 SvREFCNT_dec(PL_utf8_punct);
639 SvREFCNT_dec(PL_utf8_xdigit);
640 SvREFCNT_dec(PL_utf8_mark);
641 SvREFCNT_dec(PL_utf8_toupper);
642 SvREFCNT_dec(PL_utf8_tolower);
643 PL_utf8_alnum = Nullsv;
644 PL_utf8_alnumc = Nullsv;
645 PL_utf8_ascii = Nullsv;
646 PL_utf8_alpha = Nullsv;
647 PL_utf8_space = Nullsv;
648 PL_utf8_cntrl = Nullsv;
649 PL_utf8_graph = Nullsv;
650 PL_utf8_digit = Nullsv;
651 PL_utf8_upper = Nullsv;
652 PL_utf8_lower = Nullsv;
653 PL_utf8_print = Nullsv;
654 PL_utf8_punct = Nullsv;
655 PL_utf8_xdigit = Nullsv;
656 PL_utf8_mark = Nullsv;
657 PL_utf8_toupper = Nullsv;
658 PL_utf8_totitle = Nullsv;
659 PL_utf8_tolower = Nullsv;
660
971a9dd3
GS		 661 if (!specialWARN(PL_compiling.cop_warnings))
662 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 663 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 664 if (!specialCopIO(PL_compiling.cop_io))
665 SvREFCNT_dec(PL_compiling.cop_io);
666 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 667#ifdef USE_ITHREADS
668 Safefree(CopFILE(&PL_compiling));
669 CopFILE(&PL_compiling) = Nullch;
670 Safefree(CopSTASHPV(&PL_compiling));
671#else
01724ea0 672 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 673 CopFILEGV(&PL_compiling) = Nullgv;
674 /* cop_stash is not refcounted */
01724ea0 675#endif
5c831c24 676
a0d0e21e 677 /* Prepare to destruct main symbol table. */
5f05dabc 678
3280af22
NIS		 679 hv = PL_defstash;
680 PL_defstash = 0;
a0d0e21e 681 SvREFCNT_dec(hv);
5c831c24
GS		 682 SvREFCNT_dec(PL_curstname);
683 PL_curstname = Nullsv;
a0d0e21e 684
5a844595
GS		 685 /* clear queued errors */
686 SvREFCNT_dec(PL_errors);
687 PL_errors = Nullsv;
688
a0d0e21e 689 FREETMPS;
0453d815 690 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 691 if (PL_scopestack_ix != 0)
0453d815
PM		 692 Perl_warner(aTHX_ WARN_INTERNAL,
693 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 694 (long)PL_scopestack_ix);
695 if (PL_savestack_ix != 0)
0453d815
PM		 696 Perl_warner(aTHX_ WARN_INTERNAL,
697 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 698 (long)PL_savestack_ix);
699 if (PL_tmps_floor != -1)
0453d815 700 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 701 (long)PL_tmps_floor + 1);
a0d0e21e 702 if (cxstack_ix != -1)
0453d815 703 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 704 (long)cxstack_ix + 1);
a0d0e21e 705 }
8990e307
LW		 706
707 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 708 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 709 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 710
711 /* the 2 is for PL_fdpid and PL_strtab */
712 while (PL_sv_count > 2 && sv_clean_all())
713 ;
714
d33b2eba
GS		 715 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
716 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 717 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
718 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 719
d4777f27
GS		 720 AvREAL_off(PL_fdpid); /* no surviving entries */
721 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 722 PL_fdpid = Nullav;
723
6c644e78
GS		 724#ifdef HAVE_INTERP_INTERN
725 sys_intern_clear();
726#endif
727
6e72f9df 728 /* Destruct the global string table. */
729 {
730 /* Yell and reset the HeVAL() slots that are still holding refcounts,
731 * so that sv_free() won't fail on them.
732 */
733 I32 riter;
734 I32 max;
735 HE *hent;
736 HE **array;
737
738 riter = 0;
3280af22
NIS		 739 max = HvMAX(PL_strtab);
740 array = HvARRAY(PL_strtab);
6e72f9df 741 hent = array[0];
742 for (;;) {
0453d815
PM		 743 if (hent && ckWARN_d(WARN_INTERNAL)) {
744 Perl_warner(aTHX_ WARN_INTERNAL,
745 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 746 HeVAL(hent) - Nullsv, HeKEY(hent));
747 HeVAL(hent) = Nullsv;
748 hent = HeNEXT(hent);
749 }
750 if (!hent) {
751 if (++riter > max)
752 break;
753 hent = array[riter];
754 }
755 }
756 }
3280af22 757 SvREFCNT_dec(PL_strtab);
6e72f9df 758
e652bb2f 759#ifdef USE_ITHREADS
a0739874
DM		 760 /* free the pointer table used for cloning */
761 ptr_table_free(PL_ptr_table);
53186e96 762#endif
a0739874 763
d33b2eba
GS		 764 /* free special SVs */
765
766 SvREFCNT(&PL_sv_yes) = 0;
767 sv_clear(&PL_sv_yes);
768 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 769 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 770
771 SvREFCNT(&PL_sv_no) = 0;
772 sv_clear(&PL_sv_no);
773 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 774 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 775
776 SvREFCNT(&PL_sv_undef) = 0;
777 SvREADONLY_off(&PL_sv_undef);
d33b2eba 778
0453d815
PM		 779 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
780 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 781
3280af22 782 Safefree(PL_origfilename);
3280af22 783 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 784 if (PL_reg_curpm)
785 Safefree(PL_reg_curpm);
82ba1be6 786 Safefree(PL_reg_poscache);
3280af22
NIS		 787 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
788 Safefree(PL_op_mask);
cf36064f
GS		 789 Safefree(PL_psig_ptr);
790 Safefree(PL_psig_name);
2c2666fc 791 Safefree(PL_bitcount);
ce08f86c 792 Safefree(PL_psig_pend);
6e72f9df 793 nuke_stacks();
3280af22 794 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 795
a0d0e21e 796 DEBUG_P(debprofdump());
4d1ff10f 797#ifdef USE_5005THREADS
5f08fbcd 798 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 799 MUTEX_DESTROY(&PL_sv_mutex);
800 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 801 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 802 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 803 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 804#ifdef EMULATE_ATOMIC_REFCOUNTS
805 MUTEX_DESTROY(&PL_svref_mutex);
806#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 807
8023c3ce 808 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 809 Safefree(SvPVX(PL_thrsv));
810 Safefree(SvANY(PL_thrsv));
811 Safefree(PL_thrsv);
812 PL_thrsv = Nullsv;
4d1ff10f 813#endif /* USE_5005THREADS */
d33b2eba 814
e5dd39fc
AB		 815#ifdef USE_REENTRANT_API
816 Safefree(PL_reentrant_buffer->tmbuff);
817 Safefree(PL_reentrant_buffer);
818#endif
819
612f20c3
GS		 820 sv_free_arenas();
821
fc36a67e 822 /* As the absolutely last thing, free the non-arena SV for mess() */
823
3280af22 824 if (PL_mess_sv) {
9c63abab
GS		 825 /* it could have accumulated taint magic */
826 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
827 MAGIC* mg;
828 MAGIC* moremagic;
829 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
830 moremagic = mg->mg_moremagic;
14befaf4
DM		 831 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
832 && mg->mg_len >= 0)
9c63abab
GS		 833 Safefree(mg->mg_ptr);
834 Safefree(mg);
835 }
836 }
fc36a67e 837 /* we know that type >= SVt_PV */
155aba94 838 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 839 Safefree(SvPVX(PL_mess_sv));
840 Safefree(SvANY(PL_mess_sv));
841 Safefree(PL_mess_sv);
842 PL_mess_sv = Nullsv;
fc36a67e 843 }
31d77e54 844 return STATUS_NATIVE_EXPORT;
79072805
LW		 845}
846
954c1994
GS		 847/*
848=for apidoc perl_free
849
850Releases a Perl interpreter. See L<perlembed>.
851
852=cut
853*/
854
79072805 855void
0cb96387 856perl_free(pTHXx)
79072805 857{
acfe0abc 858#if defined(WIN32) || defined(NETWARE)
ce3e5b80 859# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 860# ifdef NETWARE
861 void *host = nw_internal_host;
862# else
863 void *host = w32_internal_host;
864# endif
865# ifndef NETWARE
866 if (PerlProc_lasthost()) {
ce08f86c 867 PerlIO_cleanup();
acfe0abc
GS		 868 }
869# endif
ce3e5b80 870 PerlMem_free(aTHXx);
acfe0abc
GS		 871# ifdef NETWARE
872 nw5_delete_internal_host(host);
873# else
874 win32_delete_internal_host(host);
875# endif
1c0ca838 876# else
acfe0abc 877 PerlIO_cleanup();
1c0ca838
GS		 878 PerlMem_free(aTHXx);
879# endif
acfe0abc
GS		 880#else
881 PerlMem_free(aTHXx);
76e3520e 882#endif
79072805
LW		 883}
884
4b556e6c 885void
864dbfa3 886Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 887{
3280af22
NIS		 888 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
889 PL_exitlist[PL_exitlistlen].fn = fn;
890 PL_exitlist[PL_exitlistlen].ptr = ptr;
891 ++PL_exitlistlen;
4b556e6c
JD		 892}
893
954c1994
GS		 894/*
895=for apidoc perl_parse
896
897Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
898
899=cut
900*/
901
79072805 902int
0cb96387 903perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 904{
6224f72b 905 I32 oldscope;
6224f72b 906 int ret;
db36c5a1 907 dJMPENV;
4d1ff10f 908#ifdef USE_5005THREADS
cea2e8a9
GS		 909 dTHX;
910#endif
8d063cd8 911
a687059c
LW		 912#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
913#ifdef IAMSUID
914#undef IAMSUID
cea2e8a9 915 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 916setuid perl scripts securely.\n");
917#endif
918#endif
919
8f1f23e8 920#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 921 _dyld_lookup_and_bind
922 ("__environ", (unsigned long *) &environ_pointer, NULL);
923#endif /* environ */
924
3280af22 925 PL_origargc = argc;
bc0a45ed
DM		 926 {
927 /* we copy rather than point to argv
928 * since perl_clone will copy and perl_destruct
929 * has no way of knowing if we've made a copy or
930 * just point to argv
931 */
932 int i = PL_origargc;
933 New(0, PL_origargv, i+1, char*);
934 PL_origargv[i] = '\0';
935 while (i-- > 0) {
936 PL_origargv[i] = savepv(argv[i]);
937 }
938 }
939
fa6a1c44 940#ifdef USE_ENVIRON_ARRAY
3280af22 941 PL_origenviron = environ;
a0d0e21e
LW		 942#endif
943
3280af22 944 if (PL_do_undump) {
a0d0e21e
LW		 945
946 /* Come here if running an undumped a.out. */
947
3280af22
NIS		 948 PL_origfilename = savepv(argv[0]);
949 PL_do_undump = FALSE;
a0d0e21e 950 cxstack_ix = -1; /* start label stack again */
748a9306 951 init_ids();
a0d0e21e
LW		 952 init_postdump_symbols(argc,argv,env);
953 return 0;
954 }
955
3280af22
NIS		 956 if (PL_main_root) {
957 PL_curpad = AvARRAY(PL_comppad);
958 op_free(PL_main_root);
959 PL_main_root = Nullop;
ff0cee69 960 }
3280af22
NIS		 961 PL_main_start = Nullop;
962 SvREFCNT_dec(PL_main_cv);
963 PL_main_cv = Nullcv;
79072805 964
3280af22
NIS		 965 time(&PL_basetime);
966 oldscope = PL_scopestack_ix;
599cee73 967 PL_dowarn = G_WARN_OFF;
f86702cc 968
14dd3ad8
GS		 969#ifdef PERL_FLEXIBLE_EXCEPTIONS
970 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
971#else
972 JMPENV_PUSH(ret);
973#endif
6224f72b 974 switch (ret) {
312caa8e 975 case 0:
14dd3ad8
GS		 976#ifndef PERL_FLEXIBLE_EXCEPTIONS
977 parse_body(env,xsinit);
978#endif
7d30b5c4
GS		 979 if (PL_checkav)
980 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 981 ret = 0;
982 break;
6224f72b
GS		 983 case 1:
984 STATUS_ALL_FAILURE;
985 /* FALL THROUGH */
986 case 2:
987 /* my_exit() was called */
3280af22 988 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 989 LEAVE;
990 FREETMPS;
3280af22 991 PL_curstash = PL_defstash;
7d30b5c4
GS		 992 if (PL_checkav)
993 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 994 ret = STATUS_NATIVE_EXPORT;
995 break;
6224f72b 996 case 3:
bf49b057 997 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 998 ret = 1;
999 break;
6224f72b 1000 }
14dd3ad8
GS		 1001 JMPENV_POP;
1002 return ret;
1003}
1004
1005#ifdef PERL_FLEXIBLE_EXCEPTIONS
1006STATIC void *
1007S_vparse_body(pTHX_ va_list args)
1008{
1009 char **env = va_arg(args, char**);
1010 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1011
1012 return parse_body(env, xsinit);
312caa8e 1013}
14dd3ad8 1014#endif
312caa8e
CS		 1015
1016STATIC void *
14dd3ad8 1017S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1018{
312caa8e
CS		 1019 int argc = PL_origargc;
1020 char **argv = PL_origargv;
312caa8e
CS		 1021 char *scriptname = NULL;
1022 int fdscript = -1;
1023 VOL bool dosearch = FALSE;
1024 char *validarg = "";
1025 AV* comppadlist;
1026 register SV *sv;
1027 register char *s;
cf756827 1028 char *cddir = Nullch;
312caa8e 1029
3280af22 1030 sv_setpvn(PL_linestr,"",0);
79cb57f6 1031 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1032 SAVEFREESV(sv);
1033 init_main_stash();
54310121 1034
6224f72b
GS		 1035 for (argc--,argv++; argc > 0; argc--,argv++) {
1036 if (argv[0][0] != '-' || !argv[0][1])
1037 break;
1038#ifdef DOSUID
1039 if (*validarg)
1040 validarg = " PHOOEY ";
1041 else
1042 validarg = argv[0];
13281fa4 1043#endif
6224f72b
GS		 1044 s = argv[0]+1;
1045 reswitch:
1046 switch (*s) {
729a02f2
GS		 1047 case 'C':
1048#ifdef WIN32
c0932edc 1049 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1050 /* FALL THROUGH */
1051#endif
1d5472a9
GS		 1052#ifndef PERL_STRICT_CR
1053 case '\r':
1054#endif
6224f72b
GS		 1055 case ' ':
1056 case '0':
1057 case 'F':
1058 case 'a':
1059 case 'c':
1060 case 'd':
1061 case 'D':
1062 case 'h':
1063 case 'i':
1064 case 'l':
1065 case 'M':
1066 case 'm':
1067 case 'n':
1068 case 'p':
1069 case 's':
1070 case 'u':
1071 case 'U':
1072 case 'v':
599cee73
PM		 1073 case 'W':
1074 case 'X':
6224f72b 1075 case 'w':
155aba94 1076 if ((s = moreswitches(s)))
6224f72b
GS		 1077 goto reswitch;
1078 break;
33b78306 1079
6224f72b 1080 case 'T':
3280af22 1081 PL_tainting = TRUE;
6224f72b
GS		 1082 s++;
1083 goto reswitch;
f86702cc 1084
6224f72b 1085 case 'e':
bf4acbe4
GS		 1086#ifdef MACOS_TRADITIONAL
1087 /* ignore -e for Dev:Pseudo argument */
1088 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1089 break;
bf4acbe4 1090#endif
3280af22 1091 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1092 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1093 if (!PL_e_script) {
79cb57f6 1094 PL_e_script = newSVpvn("",0);
0cb96387 1095 filter_add(read_e_script, NULL);
6224f72b
GS		 1096 }
1097 if (*++s)
3280af22 1098 sv_catpv(PL_e_script, s);
6224f72b 1099 else if (argv[1]) {
3280af22 1100 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1101 argc--,argv++;
1102 }
1103 else
cea2e8a9 1104 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1105 sv_catpv(PL_e_script, "\n");
6224f72b 1106 break;
afe37c7d 1107
6224f72b
GS		 1108 case 'I': /* -I handled both here and in moreswitches() */
1109 forbid_setid("-I");
1110 if (!*++s && (s=argv[1]) != Nullch) {
1111 argc--,argv++;
1112 }
6224f72b 1113 if (s && *s) {
0df16ed7
GS		 1114 char *p;
1115 STRLEN len = strlen(s);
1116 p = savepvn(s, len);
9c8a64f0 1117 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1118 sv_catpvn(sv, "-I", 2);
1119 sv_catpvn(sv, p, len);
1120 sv_catpvn(sv, " ", 1);
6224f72b 1121 Safefree(p);
0df16ed7
GS		 1122 }
1123 else
a67e862a 1124 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1125 break;
1126 case 'P':
1127 forbid_setid("-P");
3280af22 1128 PL_preprocess = TRUE;
6224f72b
GS		 1129 s++;
1130 goto reswitch;
1131 case 'S':
1132 forbid_setid("-S");
1133 dosearch = TRUE;
1134 s++;
1135 goto reswitch;
1136 case 'V':
3280af22
NIS		 1137 if (!PL_preambleav)
1138 PL_preambleav = newAV();
1139 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1140 if (*++s != ':') {
3280af22 1141 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1142#ifdef VMS
6b88bc9c 1143 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1144#else
3280af22 1145 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1146#endif
3280af22 1147 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1148# ifdef DEBUGGING
3280af22 1149 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1150# endif
6224f72b 1151# ifdef MULTIPLICITY
8f872242 1152 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1153# endif
4d1ff10f
AB		 1154# ifdef USE_5005THREADS
1155 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1156# endif
ac5e8965
JH		 1157# ifdef USE_ITHREADS
1158 sv_catpv(PL_Sv," USE_ITHREADS");
1159# endif
10cc9d2a
JH		 1160# ifdef USE_64_BIT_INT
1161 sv_catpv(PL_Sv," USE_64_BIT_INT");
1162# endif
1163# ifdef USE_64_BIT_ALL
1164 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1165# endif
1166# ifdef USE_LONG_DOUBLE
1167 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1168# endif
53430762
JH		 1169# ifdef USE_LARGE_FILES
1170 sv_catpv(PL_Sv," USE_LARGE_FILES");
1171# endif
ac5e8965
JH		 1172# ifdef USE_SOCKS
1173 sv_catpv(PL_Sv," USE_SOCKS");
1174# endif
b363f7ed
GS		 1175# ifdef PERL_IMPLICIT_CONTEXT
1176 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1177# endif
1178# ifdef PERL_IMPLICIT_SYS
1179 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1180# endif
3280af22 1181 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1182
6224f72b
GS		 1183#if defined(LOCAL_PATCH_COUNT)
1184 if (LOCAL_PATCH_COUNT > 0) {
1185 int i;
3280af22 1186 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1187 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1188 if (PL_localpatches[i])
cea2e8a9 1189 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1190 }
1191 }
1192#endif
cea2e8a9 1193 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1194#ifdef __DATE__
1195# ifdef __TIME__
cea2e8a9 1196 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1197# else
cea2e8a9 1198 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1199# endif
1200#endif
3280af22 1201 sv_catpv(PL_Sv, "; \
6224f72b 1202$\"=\"\\n \"; \
69fcd688
JH		 1203@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1204#ifdef __CYGWIN__
1205 sv_catpv(PL_Sv,"\
1206push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1207#endif
1208 sv_catpv(PL_Sv, "\
6224f72b
GS		 1209print \" \\%ENV:\\n @env\\n\" if @env; \
1210print \" \\@INC:\\n @INC\\n\";");
1211 }
1212 else {
3280af22
NIS		 1213 PL_Sv = newSVpv("config_vars(qw(",0);
1214 sv_catpv(PL_Sv, ++s);
1215 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1216 s += strlen(s);
1217 }
3280af22 1218 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1219 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1220 goto reswitch;
1221 case 'x':
3280af22 1222 PL_doextract = TRUE;
6224f72b
GS		 1223 s++;
1224 if (*s)
f4c556ac 1225 cddir = s;
6224f72b
GS		 1226 break;
1227 case 0:
1228 break;
1229 case '-':
1230 if (!*++s || isSPACE(*s)) {
1231 argc--,argv++;
1232 goto switch_end;
1233 }
1234 /* catch use of gnu style long options */
1235 if (strEQ(s, "version")) {
1236 s = "v";
1237 goto reswitch;
1238 }
1239 if (strEQ(s, "help")) {
1240 s = "h";
1241 goto reswitch;
1242 }
1243 s--;
1244 /* FALL THROUGH */
1245 default:
cea2e8a9 1246 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1247 }
1248 }
6224f72b 1249 switch_end:
54310121 1250
f675dbe5
CB		 1251 if (
1252#ifndef SECURE_INTERNAL_GETENV
1253 !PL_tainting &&
1254#endif
cf756827 1255 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1256 {
cf756827 1257 char *popt = s;
74288ac8
GS		 1258 while (isSPACE(*s))
1259 s++;
1260 if (*s == '-' && *(s+1) == 'T')
1261 PL_tainting = TRUE;
1262 else {
cf756827 1263 char *popt_copy = Nullch;
74288ac8 1264 while (s && *s) {
4ea8f8fb 1265 char *d;
74288ac8
GS		 1266 while (isSPACE(*s))
1267 s++;
1268 if (*s == '-') {
1269 s++;
1270 if (isSPACE(*s))
1271 continue;
1272 }
4ea8f8fb 1273 d = s;
74288ac8
GS		 1274 if (!*s)
1275 break;
1276 if (!strchr("DIMUdmw", *s))
cea2e8a9 1277 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1278 while (++s && *s) {
1279 if (isSPACE(*s)) {
cf756827
GS		 1280 if (!popt_copy) {
1281 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1282 s = popt_copy + (s - popt);
1283 d = popt_copy + (d - popt);
1284 }
4ea8f8fb
MS		 1285 *s++ = '\0';
1286 break;
1287 }
1288 }
1289 moreswitches(d);
6224f72b 1290 }
6224f72b
GS		 1291 }
1292 }
a0d0e21e 1293
6224f72b
GS		 1294 if (!scriptname)
1295 scriptname = argv[0];
3280af22 1296 if (PL_e_script) {
6224f72b
GS		 1297 argc++,argv--;
1298 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1299 }
1300 else if (scriptname == Nullch) {
1301#ifdef MSDOS
1302 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1303 moreswitches("h");
1304#endif
1305 scriptname = "-";
1306 }
1307
1308 init_perllib();
1309
1310 open_script(scriptname,dosearch,sv,&fdscript);
1311
1312 validate_suid(validarg, scriptname,fdscript);
1313
64ca3a65 1314#ifndef PERL_MICRO
0b5b802d
GS		 1315#if defined(SIGCHLD) || defined(SIGCLD)
1316 {
1317#ifndef SIGCHLD
1318# define SIGCHLD SIGCLD
1319#endif
1320 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1321 if (sigstate == SIG_IGN) {
1322 if (ckWARN(WARN_SIGNAL))
1323 Perl_warner(aTHX_ WARN_SIGNAL,
1324 "Can't ignore signal CHLD, forcing to default");
1325 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1326 }
1327 }
1328#endif
64ca3a65 1329#endif
0b5b802d 1330
bf4acbe4
GS		 1331#ifdef MACOS_TRADITIONAL
1332 if (PL_doextract || gMacPerl_AlwaysExtract) {
1333#else
f4c556ac 1334 if (PL_doextract) {
bf4acbe4 1335#endif
6224f72b 1336 find_beginning();
f4c556ac
GS		 1337 if (cddir && PerlDir_chdir(cddir) < 0)
1338 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1339
1340 }
6224f72b 1341
3280af22
NIS		 1342 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1343 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1344 CvUNIQUE_on(PL_compcv);
1345
1346 PL_comppad = newAV();
1347 av_push(PL_comppad, Nullsv);
1348 PL_curpad = AvARRAY(PL_comppad);
1349 PL_comppad_name = newAV();
1350 PL_comppad_name_fill = 0;
1351 PL_min_intro_pending = 0;
1352 PL_padix = 0;
4d1ff10f 1353#ifdef USE_5005THREADS
79cb57f6 1354 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1355 PL_curpad[0] = (SV*)newAV();
1356 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1357 CvOWNER(PL_compcv) = 0;
1358 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1359 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1360#endif /* USE_5005THREADS */
6224f72b
GS		 1361
1362 comppadlist = newAV();
1363 AvREAL_off(comppadlist);
3280af22
NIS		 1364 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1365 av_store(comppadlist, 1, (SV*)PL_comppad);
1366 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1367
0c4f7ff0 1368 boot_core_PerlIO();
6224f72b 1369 boot_core_UNIVERSAL();
9a34ef1d 1370#ifndef PERL_MICRO
09bef843 1371 boot_core_xsutils();
9a34ef1d 1372#endif
6224f72b
GS		 1373
1374 if (xsinit)
acfe0abc 1375 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1376#ifndef PERL_MICRO
ed79a026 1377#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1378 init_os_extras();
6224f72b 1379#endif
64ca3a65 1380#endif
6224f72b 1381
29209bc5 1382#ifdef USE_SOCKS
1b9c9cf5
DH		 1383# ifdef HAS_SOCKS5_INIT
1384 socks5_init(argv[0]);
1385# else
29209bc5 1386 SOCKSinit(argv[0]);
1b9c9cf5 1387# endif
ac27b0f5 1388#endif
29209bc5 1389
6224f72b
GS		 1390 init_predump_symbols();
1391 /* init_postdump_symbols not currently designed to be called */
1392 /* more than once (ENV isn't cleared first, for example) */
1393 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1394 if (!PL_do_undump)
6224f72b
GS		 1395 init_postdump_symbols(argc,argv,env);
1396
1397 init_lexer();
1398
1399 /* now parse the script */
1400
1401 SETERRNO(0,SS$_NORMAL);
3280af22 1402 PL_error_count = 0;
bf4acbe4
GS		 1403#ifdef MACOS_TRADITIONAL
1404 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1405 if (PL_minus_c)
1406 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1407 else {
1408 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1409 MacPerl_MPWFileName(PL_origfilename));
1410 }
1411 }
1412#else
3280af22
NIS		 1413 if (yyparse() || PL_error_count) {
1414 if (PL_minus_c)
cea2e8a9 1415 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1416 else {
cea2e8a9 1417 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1418 PL_origfilename);
6224f72b
GS		 1419 }
1420 }
bf4acbe4 1421#endif
57843af0 1422 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1423 PL_curstash = PL_defstash;
1424 PL_preprocess = FALSE;
1425 if (PL_e_script) {
1426 SvREFCNT_dec(PL_e_script);
1427 PL_e_script = Nullsv;
6224f72b
GS		 1428 }
1429
1430 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1431 SvREFCNT_dec(PL_rs);
1432 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1433 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1434 if (PL_do_undump)
6224f72b
GS		 1435 my_unexec();
1436
57843af0
GS		 1437 if (isWARN_ONCE) {
1438 SAVECOPFILE(PL_curcop);
1439 SAVECOPLINE(PL_curcop);
3280af22 1440 gv_check(PL_defstash);
57843af0 1441 }
6224f72b
GS		 1442
1443 LEAVE;
1444 FREETMPS;
1445
1446#ifdef MYMALLOC
1447 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1448 dump_mstats("after compilation:");
1449#endif
1450
1451 ENTER;
3280af22 1452 PL_restartop = 0;
312caa8e 1453 return NULL;
6224f72b
GS		 1454}
1455
954c1994
GS		 1456/*
1457=for apidoc perl_run
1458
1459Tells a Perl interpreter to run. See L<perlembed>.
1460
1461=cut
1462*/
1463
6224f72b 1464int
0cb96387 1465perl_run(pTHXx)
6224f72b 1466{
6224f72b 1467 I32 oldscope;
14dd3ad8 1468 int ret = 0;
db36c5a1 1469 dJMPENV;
4d1ff10f 1470#ifdef USE_5005THREADS
cea2e8a9
GS		 1471 dTHX;
1472#endif
6224f72b 1473
3280af22 1474 oldscope = PL_scopestack_ix;
6224f72b 1475
14dd3ad8 1476#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1477 redo_body:
14dd3ad8
GS		 1478 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1479#else
1480 JMPENV_PUSH(ret);
1481#endif
6224f72b
GS		 1482 switch (ret) {
1483 case 1:
1484 cxstack_ix = -1; /* start context stack again */
312caa8e 1485 goto redo_body;
14dd3ad8
GS		 1486 case 0: /* normal completion */
1487#ifndef PERL_FLEXIBLE_EXCEPTIONS
1488 redo_body:
1489 run_body(oldscope);
1490#endif
1491 /* FALL THROUGH */
1492 case 2: /* my_exit() */
3280af22 1493 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1494 LEAVE;
1495 FREETMPS;
3280af22 1496 PL_curstash = PL_defstash;
31d77e54
AB		 1497 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1498 PL_endav && !PL_minus_c)
1499 call_list(oldscope, PL_endav);
6224f72b
GS		 1500#ifdef MYMALLOC
1501 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1502 dump_mstats("after execution: ");
1503#endif
14dd3ad8
GS		 1504 ret = STATUS_NATIVE_EXPORT;
1505 break;
6224f72b 1506 case 3:
312caa8e
CS		 1507 if (PL_restartop) {
1508 POPSTACK_TO(PL_mainstack);
1509 goto redo_body;
6224f72b 1510 }
bf49b057 1511 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1512 FREETMPS;
14dd3ad8
GS		 1513 ret = 1;
1514 break;
6224f72b
GS		 1515 }
1516
14dd3ad8
GS		 1517 JMPENV_POP;
1518 return ret;
312caa8e
CS		 1519}
1520
14dd3ad8 1521#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1522STATIC void *
14dd3ad8 1523S_vrun_body(pTHX_ va_list args)
312caa8e 1524{
312caa8e
CS		 1525 I32 oldscope = va_arg(args, I32);
1526
14dd3ad8
GS		 1527 return run_body(oldscope);
1528}
1529#endif
1530
1531
1532STATIC void *
1533S_run_body(pTHX_ I32 oldscope)
1534{
6224f72b 1535 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1536 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1537
3280af22 1538 if (!PL_restartop) {
6224f72b
GS		 1539 DEBUG_x(dump_all());
1540 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1541 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1542 PTR2UV(thr)));
6224f72b 1543
3280af22 1544 if (PL_minus_c) {
bf4acbe4
GS		 1545#ifdef MACOS_TRADITIONAL
1546 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1547#else
bf49b057 1548 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1549#endif
6224f72b
GS		 1550 my_exit(0);
1551 }
3280af22 1552 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1553 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1554 if (PL_initav)
1555 call_list(oldscope, PL_initav);
6224f72b
GS		 1556 }
1557
1558 /* do it */
1559
3280af22 1560 if (PL_restartop) {
533c011a 1561 PL_op = PL_restartop;
3280af22 1562 PL_restartop = 0;
cea2e8a9 1563 CALLRUNOPS(aTHX);
6224f72b 1564 }
3280af22
NIS		 1565 else if (PL_main_start) {
1566 CvDEPTH(PL_main_cv) = 1;
533c011a 1567 PL_op = PL_main_start;
cea2e8a9 1568 CALLRUNOPS(aTHX);
6224f72b
GS		 1569 }
1570
f6b3007c
JH		 1571 my_exit(0);
1572 /* NOTREACHED */
312caa8e 1573 return NULL;
6224f72b
GS		 1574}
1575
954c1994
GS		 1576/*
1577=for apidoc p||get_sv
1578
1579Returns the SV of the specified Perl scalar. If C<create> is set and the
1580Perl variable does not exist then it will be created. If C<create> is not
1581set and the variable does not exist then NULL is returned.
1582
1583=cut
1584*/
1585
6224f72b 1586SV*
864dbfa3 1587Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1588{
1589 GV *gv;
4d1ff10f 1590#ifdef USE_5005THREADS
6224f72b
GS		 1591 if (name[1] == '\0' && !isALPHA(name[0])) {
1592 PADOFFSET tmp = find_threadsv(name);
411caa50 1593 if (tmp != NOT_IN_PAD)
6224f72b 1594 return THREADSV(tmp);
6224f72b 1595 }
4d1ff10f 1596#endif /* USE_5005THREADS */
6224f72b
GS		 1597 gv = gv_fetchpv(name, create, SVt_PV);
1598 if (gv)
1599 return GvSV(gv);
1600 return Nullsv;
1601}
1602
954c1994
GS		 1603/*
1604=for apidoc p||get_av
1605
1606Returns the AV of the specified Perl array. If C<create> is set and the
1607Perl variable does not exist then it will be created. If C<create> is not
1608set and the variable does not exist then NULL is returned.
1609
1610=cut
1611*/
1612
6224f72b 1613AV*
864dbfa3 1614Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1615{
1616 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1617 if (create)
1618 return GvAVn(gv);
1619 if (gv)
1620 return GvAV(gv);
1621 return Nullav;
1622}
1623
954c1994
GS		 1624/*
1625=for apidoc p||get_hv
1626
1627Returns the HV of the specified Perl hash. 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 1634HV*
864dbfa3 1635Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1636{
a0d0e21e
LW		 1637 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1638 if (create)
1639 return GvHVn(gv);
1640 if (gv)
1641 return GvHV(gv);
1642 return Nullhv;
1643}
1644
954c1994
GS		 1645/*
1646=for apidoc p||get_cv
1647
1648Returns the CV of the specified Perl subroutine. If C<create> is set and
1649the Perl subroutine does not exist then it will be declared (which has the
1650same effect as saying C<sub name;>). If C<create> is not set and the
1651subroutine does not exist then NULL is returned.
1652
1653=cut
1654*/
1655
a0d0e21e 1656CV*
864dbfa3 1657Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1658{
1659 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1660 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1661 /* XXX this is probably not what they think they're getting.
1662 * It has the same effect as "sub name;", i.e. just a forward
1663 * declaration! */
8ebc5c01 1664 if (create && !GvCVu(gv))
774d564b 1665 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1666 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1667 Nullop,
a0d0e21e
LW		 1668 Nullop);
1669 if (gv)
8ebc5c01 1670 return GvCVu(gv);
a0d0e21e
LW		 1671 return Nullcv;
1672}
1673
79072805
LW		 1674/* Be sure to refetch the stack pointer after calling these routines. */
1675
954c1994
GS		 1676/*
1677=for apidoc p||call_argv
1678
1679Performs a callback to the specified Perl sub. See L<perlcall>.
1680
1681=cut
1682*/
1683
a0d0e21e 1684I32
864dbfa3 1685Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1686
8ac85365
NIS		 1687 /* See G_* flags in cop.h */
1688 /* null terminated arg list */
8990e307 1689{
a0d0e21e 1690 dSP;
8990e307 1691
924508f0 1692 PUSHMARK(SP);
a0d0e21e 1693 if (argv) {
8990e307 1694 while (*argv) {
a0d0e21e 1695 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1696 argv++;
1697 }
a0d0e21e 1698 PUTBACK;
8990e307 1699 }
864dbfa3 1700 return call_pv(sub_name, flags);
8990e307
LW		 1701}
1702
954c1994
GS		 1703/*
1704=for apidoc p||call_pv
1705
1706Performs a callback to the specified Perl sub. See L<perlcall>.
1707
1708=cut
1709*/
1710
a0d0e21e 1711I32
864dbfa3 1712Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1713 /* name of the subroutine */
1714 /* See G_* flags in cop.h */
a0d0e21e 1715{
864dbfa3 1716 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1717}
1718
954c1994
GS		 1719/*
1720=for apidoc p||call_method
1721
1722Performs a callback to the specified Perl method. The blessed object must
1723be on the stack. See L<perlcall>.
1724
1725=cut
1726*/
1727
a0d0e21e 1728I32
864dbfa3 1729Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1730 /* name of the subroutine */
1731 /* See G_* flags in cop.h */
a0d0e21e 1732{
968b3946 1733 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1734}
1735
1736/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1737/*
1738=for apidoc p||call_sv
1739
1740Performs a callback to the Perl sub whose name is in the SV. See
1741L<perlcall>.
1742
1743=cut
1744*/
1745
a0d0e21e 1746I32
864dbfa3 1747Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1748 /* See G_* flags in cop.h */
a0d0e21e 1749{
924508f0 1750 dSP;
a0d0e21e 1751 LOGOP myop; /* fake syntax tree node */
968b3946 1752 UNOP method_op;
aa689395 1753 I32 oldmark;
13689cfe 1754 volatile I32 retval = 0;
a0d0e21e 1755 I32 oldscope;
54310121 1756 bool oldcatch = CATCH_GET;
6224f72b 1757 int ret;
533c011a 1758 OP* oldop = PL_op;
db36c5a1 1759 dJMPENV;
1e422769 1760
a0d0e21e
LW		 1761 if (flags & G_DISCARD) {
1762 ENTER;
1763 SAVETMPS;
1764 }
1765
aa689395 1766 Zero(&myop, 1, LOGOP);
54310121 1767 myop.op_next = Nullop;
f51d4af5 1768 if (!(flags & G_NOARGS))
aa689395 1769 myop.op_flags |= OPf_STACKED;
54310121 1770 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1771 (flags & G_ARRAY) ? OPf_WANT_LIST :
1772 OPf_WANT_SCALAR);
462e5cf6 1773 SAVEOP();
533c011a 1774 PL_op = (OP*)&myop;
aa689395 1775
3280af22
NIS		 1776 EXTEND(PL_stack_sp, 1);
1777 *++PL_stack_sp = sv;
aa689395 1778 oldmark = TOPMARK;
3280af22 1779 oldscope = PL_scopestack_ix;
a0d0e21e 1780
3280af22 1781 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1782 /* Handle first BEGIN of -d. */
3280af22 1783 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1784 /* Try harder, since this may have been a sighandler, thus
1785 * curstash may be meaningless. */
3280af22 1786 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1787 && !(flags & G_NODEBUG))
533c011a 1788 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1789
968b3946
GS		 1790 if (flags & G_METHOD) {
1791 Zero(&method_op, 1, UNOP);
1792 method_op.op_next = PL_op;
1793 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1794 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1795 PL_op = (OP*)&method_op;
968b3946
GS		 1796 }
1797
312caa8e 1798 if (!(flags & G_EVAL)) {
0cdb2077 1799 CATCH_SET(TRUE);
14dd3ad8 1800 call_body((OP*)&myop, FALSE);
312caa8e 1801 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1802 CATCH_SET(oldcatch);
312caa8e
CS		 1803 }
1804 else {
d78bda3d 1805 myop.op_other = (OP*)&myop;
3280af22 1806 PL_markstack_ptr--;
4633a7c4
LW		 1807 /* we're trying to emulate pp_entertry() here */
1808 {
c09156bb 1809 register PERL_CONTEXT *cx;
54310121 1810 I32 gimme = GIMME_V;
ac27b0f5 1811
4633a7c4
LW		 1812 ENTER;
1813 SAVETMPS;
ac27b0f5 1814
968b3946 1815 push_return(Nullop);
1d76a5c3 1816 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1817 PUSHEVAL(cx, 0, 0);
533c011a 1818 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1819
faef0170 1820 PL_in_eval = EVAL_INEVAL;
4633a7c4 1821 if (flags & G_KEEPERR)
faef0170 1822 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1823 else
38a03e6e 1824 sv_setpv(ERRSV,"");
4633a7c4 1825 }
3280af22 1826 PL_markstack_ptr++;
a0d0e21e 1827
14dd3ad8
GS		 1828#ifdef PERL_FLEXIBLE_EXCEPTIONS
1829 redo_body:
1830 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1831 (OP*)&myop, FALSE);
14dd3ad8
GS		 1832#else
1833 JMPENV_PUSH(ret);
1834#endif
6224f72b
GS		 1835 switch (ret) {
1836 case 0:
14dd3ad8
GS		 1837#ifndef PERL_FLEXIBLE_EXCEPTIONS
1838 redo_body:
1839 call_body((OP*)&myop, FALSE);
1840#endif
312caa8e
CS		 1841 retval = PL_stack_sp - (PL_stack_base + oldmark);
1842 if (!(flags & G_KEEPERR))
1843 sv_setpv(ERRSV,"");
a0d0e21e 1844 break;
6224f72b 1845 case 1:
f86702cc 1846 STATUS_ALL_FAILURE;
a0d0e21e 1847 /* FALL THROUGH */
6224f72b 1848 case 2:
a0d0e21e 1849 /* my_exit() was called */
3280af22 1850 PL_curstash = PL_defstash;
a0d0e21e 1851 FREETMPS;
14dd3ad8 1852 JMPENV_POP;
cc3604b1 1853 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1854 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1855 my_exit_jump();
a0d0e21e 1856 /* NOTREACHED */
6224f72b 1857 case 3:
3280af22 1858 if (PL_restartop) {
533c011a 1859 PL_op = PL_restartop;
3280af22 1860 PL_restartop = 0;
312caa8e 1861 goto redo_body;
a0d0e21e 1862 }
3280af22 1863 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1864 if (flags & G_ARRAY)
1865 retval = 0;
1866 else {
1867 retval = 1;
3280af22 1868 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1869 }
312caa8e 1870 break;
a0d0e21e 1871 }
a0d0e21e 1872
3280af22 1873 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1874 SV **newsp;
1875 PMOP *newpm;
1876 I32 gimme;
c09156bb 1877 register PERL_CONTEXT *cx;
a0a2876f
LW		 1878 I32 optype;
1879
1880 POPBLOCK(cx,newpm);
1881 POPEVAL(cx);
1882 pop_return();
3280af22 1883 PL_curpm = newpm;
a0a2876f 1884 LEAVE;
a0d0e21e 1885 }
14dd3ad8 1886 JMPENV_POP;
a0d0e21e 1887 }
1e422769 1888
a0d0e21e 1889 if (flags & G_DISCARD) {
3280af22 1890 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1891 retval = 0;
1892 FREETMPS;
1893 LEAVE;
1894 }
533c011a 1895 PL_op = oldop;
a0d0e21e
LW		 1896 return retval;
1897}
1898
14dd3ad8 1899#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1900STATIC void *
14dd3ad8 1901S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1902{
1903 OP *myop = va_arg(args, OP*);
1904 int is_eval = va_arg(args, int);
1905
14dd3ad8 1906 call_body(myop, is_eval);
312caa8e
CS		 1907 return NULL;
1908}
14dd3ad8 1909#endif
312caa8e
CS		 1910
1911STATIC void
14dd3ad8 1912S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1913{
312caa8e
CS		 1914 if (PL_op == myop) {
1915 if (is_eval)
f807eda9 1916 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1917 else
f807eda9 1918 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1919 }
1920 if (PL_op)
cea2e8a9 1921 CALLRUNOPS(aTHX);
312caa8e
CS		 1922}
1923
6e72f9df 1924/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1925
954c1994
GS		 1926/*
1927=for apidoc p||eval_sv
1928
1929Tells Perl to C<eval> the string in the SV.
1930
1931=cut
1932*/
1933
a0d0e21e 1934I32
864dbfa3 1935Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1936
8ac85365 1937 /* See G_* flags in cop.h */
a0d0e21e 1938{
924508f0 1939 dSP;
a0d0e21e 1940 UNOP myop; /* fake syntax tree node */
8fa7f367 1941 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1942 volatile I32 retval = 0;
4633a7c4 1943 I32 oldscope;
6224f72b 1944 int ret;
533c011a 1945 OP* oldop = PL_op;
db36c5a1 1946 dJMPENV;
84902520 1947
4633a7c4
LW		 1948 if (flags & G_DISCARD) {
1949 ENTER;
1950 SAVETMPS;
1951 }
1952
462e5cf6 1953 SAVEOP();
533c011a
NIS		 1954 PL_op = (OP*)&myop;
1955 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1956 EXTEND(PL_stack_sp, 1);
1957 *++PL_stack_sp = sv;
1958 oldscope = PL_scopestack_ix;
79072805 1959
4633a7c4
LW		 1960 if (!(flags & G_NOARGS))
1961 myop.op_flags = OPf_STACKED;
79072805 1962 myop.op_next = Nullop;
6e72f9df 1963 myop.op_type = OP_ENTEREVAL;
54310121 1964 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1965 (flags & G_ARRAY) ? OPf_WANT_LIST :
1966 OPf_WANT_SCALAR);
6e72f9df 1967 if (flags & G_KEEPERR)
1968 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1969
14dd3ad8 1970#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1971 redo_body:
14dd3ad8 1972 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1973 (OP*)&myop, TRUE);
14dd3ad8
GS		 1974#else
1975 JMPENV_PUSH(ret);
1976#endif
6224f72b
GS		 1977 switch (ret) {
1978 case 0:
14dd3ad8
GS		 1979#ifndef PERL_FLEXIBLE_EXCEPTIONS
1980 redo_body:
1981 call_body((OP*)&myop,TRUE);
1982#endif
312caa8e
CS		 1983 retval = PL_stack_sp - (PL_stack_base + oldmark);
1984 if (!(flags & G_KEEPERR))
1985 sv_setpv(ERRSV,"");
4633a7c4 1986 break;
6224f72b 1987 case 1:
f86702cc 1988 STATUS_ALL_FAILURE;
4633a7c4 1989 /* FALL THROUGH */
6224f72b 1990 case 2:
4633a7c4 1991 /* my_exit() was called */
3280af22 1992 PL_curstash = PL_defstash;
4633a7c4 1993 FREETMPS;
14dd3ad8 1994 JMPENV_POP;
cc3604b1 1995 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1996 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1997 my_exit_jump();
4633a7c4 1998 /* NOTREACHED */
6224f72b 1999 case 3:
3280af22 2000 if (PL_restartop) {
533c011a 2001 PL_op = PL_restartop;
3280af22 2002 PL_restartop = 0;
312caa8e 2003 goto redo_body;
4633a7c4 2004 }
3280af22 2005 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2006 if (flags & G_ARRAY)
2007 retval = 0;
2008 else {
2009 retval = 1;
3280af22 2010 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2011 }
312caa8e 2012 break;
4633a7c4
LW		 2013 }
2014
14dd3ad8 2015 JMPENV_POP;
4633a7c4 2016 if (flags & G_DISCARD) {
3280af22 2017 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2018 retval = 0;
2019 FREETMPS;
2020 LEAVE;
2021 }
533c011a 2022 PL_op = oldop;
4633a7c4
LW		 2023 return retval;
2024}
2025
954c1994
GS		 2026/*
2027=for apidoc p||eval_pv
2028
2029Tells Perl to C<eval> the given string and return an SV* result.
2030
2031=cut
2032*/
2033
137443ea 2034SV*
864dbfa3 2035Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2036{
2037 dSP;
2038 SV* sv = newSVpv(p, 0);
2039
864dbfa3 2040 eval_sv(sv, G_SCALAR);
137443ea 2041 SvREFCNT_dec(sv);
2042
2043 SPAGAIN;
2044 sv = POPs;
2045 PUTBACK;
2046
2d8e6c8d
GS		 2047 if (croak_on_error && SvTRUE(ERRSV)) {
2048 STRLEN n_a;
cea2e8a9 2049 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2050 }
137443ea 2051
2052 return sv;
2053}
2054
4633a7c4
LW		 2055/* Require a module. */
2056
954c1994
GS		 2057/*
2058=for apidoc p||require_pv
2059
7d3fb230
BS		 2060Tells Perl to C<require> the file named by the string argument. It is
2061analogous to the Perl code C<eval "require '$file'">. It's even
2062implemented that way; consider using Perl_load_module instead.
954c1994 2063
7d3fb230 2064=cut */
954c1994 2065
4633a7c4 2066void
864dbfa3 2067Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2068{
d3acc0f7
JP		 2069 SV* sv;
2070 dSP;
e788e7d3 2071 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2072 PUTBACK;
2073 sv = sv_newmortal();
4633a7c4
LW		 2074 sv_setpv(sv, "require '");
2075 sv_catpv(sv, pv);
2076 sv_catpv(sv, "'");
864dbfa3 2077 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2078 SPAGAIN;
2079 POPSTACK;
79072805
LW		 2080}
2081
79072805 2082void
864dbfa3 2083Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2084{
2085 register GV *gv;
2086
155aba94 2087 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2088 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2089}
2090
76e3520e 2091STATIC void
cea2e8a9 2092S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2093{
ab821d7f 2094 /* This message really ought to be max 23 lines.
75c72d73 2095 * Removed -h because the user already knows that option. Others? */
fb73857a 2096
76e3520e 2097 static char *usage_msg[] = {
fb73857a 2098"-0[octal] specify record separator (\\0, if no argument)",
2099"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2100"-C enable native wide character system interfaces",
1950ee41 2101"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2102"-d[:debugger] run program under debugger",
2103"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2104"-e 'command' one line of program (several -e's allowed, omit programfile)",
2105"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2106"-i[extension] edit <> files in place (makes backup if extension supplied)",
2107"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2108"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2109"-[mM][-]module execute `use/no module...' before executing program",
2110"-n assume 'while (<>) { ... }' loop around program",
2111"-p assume loop like -n but print line also, like sed",
2112"-P run program through C preprocessor before compilation",
2113"-s enable rudimentary parsing for switches after programfile",
2114"-S look for programfile using PATH environment variable",
2115"-T enable tainting checks",
2116"-u dump core after parsing program",
fb73857a 2117"-U allow unsafe operations",
aac3bd0d
GS		 2118"-v print version, subversion (includes VERY IMPORTANT perl info)",
2119"-V[:variable] print configuration summary (or a single Config.pm variable)",
2120"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2121"-W enable all warnings",
2122"-X disable all warnings",
fb73857a 2123"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2124"\n",
2125NULL
2126};
76e3520e 2127 char **p = usage_msg;
fb73857a 2128
b0e47665
GS		 2129 PerlIO_printf(PerlIO_stdout(),
2130 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2131 name);
fb73857a 2132 while (*p)
b0e47665 2133 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2134}
2135
79072805
LW		 2136/* This routine handles any switches that can be given during run */
2137
2138char *
864dbfa3 2139Perl_moreswitches(pTHX_ char *s)
79072805 2140{
ba210ebe 2141 STRLEN numlen;
c07a80fd 2142 U32 rschar;
79072805
LW		 2143
2144 switch (*s) {
2145 case '0':
a863c7d1 2146 {
53305cf1
NC		 2147 I32 flags = 0;
2148 numlen = 4;
2149 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3280af22 2150 SvREFCNT_dec(PL_nrs);
c07a80fd 2151 if (rschar & ~((U8)~0))
3280af22 2152 PL_nrs = &PL_sv_undef;
c07a80fd 2153 else if (!rschar && numlen >= 2)
79cb57f6 2154 PL_nrs = newSVpvn("", 0);
c07a80fd 2155 else {
2156 char ch = rschar;
79cb57f6 2157 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2158 }
2159 return s + numlen;
a863c7d1 2160 }
46487f74
GS		 2161 case 'C':
2162 PL_widesyscalls = TRUE;
2163 s++;
2164 return s;
2304df62 2165 case 'F':
3280af22
NIS		 2166 PL_minus_F = TRUE;
2167 PL_splitstr = savepv(s + 1);
2304df62
AD		 2168 s += strlen(s);
2169 return s;
79072805 2170 case 'a':
3280af22 2171 PL_minus_a = TRUE;
79072805
LW		 2172 s++;
2173 return s;
2174 case 'c':
3280af22 2175 PL_minus_c = TRUE;
79072805
LW		 2176 s++;
2177 return s;
2178 case 'd':
bbce6d69 2179 forbid_setid("-d");
4633a7c4 2180 s++;
70c94a19
RR		 2181 /* The following permits -d:Mod to accepts arguments following an =
2182 in the fashion that -MSome::Mod does. */
2183 if (*s == ':' || *s == '=') {
2184 char *start;
2185 SV *sv;
2186 sv = newSVpv("use Devel::", 0);
2187 start = ++s;
2188 /* We now allow -d:Module=Foo,Bar */
2189 while(isALNUM(*s) || *s==':') ++s;
2190 if (*s != '=')
2191 sv_catpv(sv, start);
2192 else {
2193 sv_catpvn(sv, start, s-start);
2194 sv_catpv(sv, " split(/,/,q{");
2195 sv_catpv(sv, ++s);
2196 sv_catpv(sv, "})");
2197 }
4633a7c4 2198 s += strlen(s);
70c94a19 2199 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2200 }
ed094faf 2201 if (!PL_perldb) {
3280af22 2202 PL_perldb = PERLDB_ALL;
a0d0e21e 2203 init_debugger();
ed094faf 2204 }
79072805
LW		 2205 return s;
2206 case 'D':
0453d815 2207 {
79072805 2208#ifdef DEBUGGING
bbce6d69 2209 forbid_setid("-D");
79072805 2210 if (isALPHA(s[1])) {
04932ac8
DM		 2211 /* if adding extra options, remember to update DEBUG_MASK */
2212 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2213 char *d;
2214
93a17b20 2215 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2216 PL_debug |= 1 << (d - debopts);
79072805
LW		 2217 }
2218 else {
3280af22 2219 PL_debug = atoi(s+1);
79072805
LW		 2220 for (s++; isDIGIT(*s); s++) ;
2221 }
aea4f609 2222 PL_debug |= DEBUG_TOP_FLAG;
79072805 2223#else
0453d815
PM		 2224 if (ckWARN_d(WARN_DEBUGGING))
2225 Perl_warner(aTHX_ WARN_DEBUGGING,
2226 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2227 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2228#endif
2229 /*SUPPRESS 530*/
2230 return s;
0453d815 2231 }
4633a7c4 2232 case 'h':
ac27b0f5 2233 usage(PL_origargv[0]);
6ad3d225 2234 PerlProc_exit(0);
79072805 2235 case 'i':
3280af22
NIS		 2236 if (PL_inplace)
2237 Safefree(PL_inplace);
2238 PL_inplace = savepv(s+1);
79072805 2239 /*SUPPRESS 530*/
3280af22 2240 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2241 if (*s) {
fb73857a 2242 *s++ = '\0';
7b8d334a
GS		 2243 if (*s == '-') /* Additional switches on #! line. */
2244 s++;
2245 }
fb73857a 2246 return s;
2247 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2248 forbid_setid("-I");
fb73857a 2249 ++s;
2250 while (*s && isSPACE(*s))
2251 ++s;
2252 if (*s) {
774d564b 2253 char *e, *p;
0df16ed7
GS		 2254 p = s;
2255 /* ignore trailing spaces (possibly followed by other switches) */
2256 do {
2257 for (e = p; *e && !isSPACE(*e); e++) ;
2258 p = e;
2259 while (isSPACE(*p))
2260 p++;
2261 } while (*p && *p != '-');
2262 e = savepvn(s, e-s);
9c8a64f0 2263 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2264 Safefree(e);
2265 s = p;
2266 if (*s == '-')
2267 s++;
79072805
LW		 2268 }
2269 else
a67e862a 2270 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2271 return s;
79072805 2272 case 'l':
3280af22 2273 PL_minus_l = TRUE;
79072805 2274 s++;
7889fe52
NIS		 2275 if (PL_ors_sv) {
2276 SvREFCNT_dec(PL_ors_sv);
2277 PL_ors_sv = Nullsv;
2278 }
79072805 2279 if (isDIGIT(*s)) {
53305cf1 2280 I32 flags = 0;
7889fe52 2281 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2282 numlen = 3 + (*s == '0');
2283 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2284 s += numlen;
2285 }
2286 else {
3280af22 2287 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2288 PL_ors_sv = newSVpvn("\n\n",2);
2289 }
2290 else {
2291 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2292 }
79072805
LW		 2293 }
2294 return s;
1a30305b 2295 case 'M':
bbce6d69 2296 forbid_setid("-M"); /* XXX ? */
1a30305b 2297 /* FALL THROUGH */
2298 case 'm':
bbce6d69 2299 forbid_setid("-m"); /* XXX ? */
1a30305b 2300 if (*++s) {
a5f75d66 2301 char *start;
11343788 2302 SV *sv;
a5f75d66
AD		 2303 char *use = "use ";
2304 /* -M-foo == 'no foo' */
2305 if (*s == '-') { use = "no "; ++s; }
11343788 2306 sv = newSVpv(use,0);
a5f75d66 2307 start = s;
1a30305b 2308 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2309 while(isALNUM(*s) || *s==':') ++s;
2310 if (*s != '=') {
11343788 2311 sv_catpv(sv, start);
c07a80fd 2312 if (*(start-1) == 'm') {
2313 if (*s != '\0')
cea2e8a9 2314 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2315 sv_catpv( sv, " ()");
c07a80fd 2316 }
2317 } else {
6df41af2 2318 if (s == start)
be98fb35
GS		 2319 Perl_croak(aTHX_ "Module name required with -%c option",
2320 s[-1]);
11343788
MB		 2321 sv_catpvn(sv, start, s-start);
2322 sv_catpv(sv, " split(/,/,q{");
2323 sv_catpv(sv, ++s);
2324 sv_catpv(sv, "})");
c07a80fd 2325 }
1a30305b 2326 s += strlen(s);
5c831c24 2327 if (!PL_preambleav)
3280af22
NIS		 2328 PL_preambleav = newAV();
2329 av_push(PL_preambleav, sv);
1a30305b 2330 }
2331 else
cea2e8a9 2332 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2333 return s;
79072805 2334 case 'n':
3280af22 2335 PL_minus_n = TRUE;
79072805
LW		 2336 s++;
2337 return s;
2338 case 'p':
3280af22 2339 PL_minus_p = TRUE;
79072805
LW		 2340 s++;
2341 return s;
2342 case 's':
bbce6d69 2343 forbid_setid("-s");
3280af22 2344 PL_doswitches = TRUE;
79072805
LW		 2345 s++;
2346 return s;
463ee0b2 2347 case 'T':
3280af22 2348 if (!PL_tainting)
cea2e8a9 2349 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2350 s++;
2351 return s;
79072805 2352 case 'u':
bf4acbe4
GS		 2353#ifdef MACOS_TRADITIONAL
2354 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2355#endif
3280af22 2356 PL_do_undump = TRUE;
79072805
LW		 2357 s++;
2358 return s;
2359 case 'U':
3280af22 2360 PL_unsafe = TRUE;
79072805
LW		 2361 s++;
2362 return s;
2363 case 'v':
8e9464f1 2364#if !defined(DGUX)
b0e47665 2365 PerlIO_printf(PerlIO_stdout(),
d2560b70 2366 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2367 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2368#else /* DGUX */
2369/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2370 PerlIO_printf(PerlIO_stdout(),
2371 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2372 PerlIO_printf(PerlIO_stdout(),
2373 Perl_form(aTHX_ " built under %s at %s %s\n",
2374 OSNAME, __DATE__, __TIME__));
2375 PerlIO_printf(PerlIO_stdout(),
2376 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2377 OSVERS));
8e9464f1
JH		 2378#endif /* !DGUX */
2379
fb73857a 2380#if defined(LOCAL_PATCH_COUNT)
2381 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2382 PerlIO_printf(PerlIO_stdout(),
2383 "\n(with %d registered patch%s, "
2384 "see perl -V for more detail)",
2385 (int)LOCAL_PATCH_COUNT,
2386 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2387#endif
1a30305b 2388
b0e47665 2389 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2390 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2391#ifdef MACOS_TRADITIONAL
2392 PerlIO_printf(PerlIO_stdout(),
084592ab 2393 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2394#endif
79072805 2395#ifdef MSDOS
b0e47665
GS		 2396 PerlIO_printf(PerlIO_stdout(),
2397 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2398#endif
2399#ifdef DJGPP
b0e47665
GS		 2400 PerlIO_printf(PerlIO_stdout(),
2401 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2402 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2403#endif
79072805 2404#ifdef OS2
b0e47665
GS		 2405 PerlIO_printf(PerlIO_stdout(),
2406 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2407 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2408#endif
79072805 2409#ifdef atarist
b0e47665
GS		 2410 PerlIO_printf(PerlIO_stdout(),
2411 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2412#endif
a3f9223b 2413#ifdef __BEOS__
b0e47665
GS		 2414 PerlIO_printf(PerlIO_stdout(),
2415 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2416#endif
1d84e8df 2417#ifdef MPE
b0e47665 2418 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2419 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2420#endif
9d116dd7 2421#ifdef OEMVS
b0e47665
GS		 2422 PerlIO_printf(PerlIO_stdout(),
2423 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2424#endif
495c5fdc 2425#ifdef __VOS__
b0e47665
GS		 2426 PerlIO_printf(PerlIO_stdout(),
2427 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2428#endif
092bebab 2429#ifdef __OPEN_VM
b0e47665
GS		 2430 PerlIO_printf(PerlIO_stdout(),
2431 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2432#endif
a1a0e61e 2433#ifdef POSIX_BC
b0e47665
GS		 2434 PerlIO_printf(PerlIO_stdout(),
2435 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2436#endif
61ae2fbf 2437#ifdef __MINT__
b0e47665
GS		 2438 PerlIO_printf(PerlIO_stdout(),
2439 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2440#endif
f83d2536 2441#ifdef EPOC
b0e47665
GS		 2442 PerlIO_printf(PerlIO_stdout(),
2443 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2444#endif
e1caacb4
JH		 2445#ifdef UNDER_CE
2446 printf("WINCE port by Rainer Keuchel, 2001\n");
2447 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2448 wce_hitreturn();
2449#endif
baed7233
DL		 2450#ifdef BINARY_BUILD_NOTICE
2451 BINARY_BUILD_NOTICE;
2452#endif
b0e47665
GS		 2453 PerlIO_printf(PerlIO_stdout(),
2454 "\n\
79072805 2455Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2456GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2457Complete documentation for Perl, including FAQ lists, should be found on\n\
2458this system using `man perl' or `perldoc perl'. If you have access to the\n\
2459Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2460 PerlProc_exit(0);
79072805 2461 case 'w':
599cee73 2462 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2463 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2464 s++;
2465 return s;
2466 case 'W':
ac27b0f5 2467 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2468 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2469 s++;
2470 return s;
2471 case 'X':
ac27b0f5 2472 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2473 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2474 s++;
2475 return s;
a0d0e21e 2476 case '*':
79072805
LW		 2477 case ' ':
2478 if (s[1] == '-') /* Additional switches on #! line. */
2479 return s+2;
2480 break;
a0d0e21e 2481 case '-':
79072805 2482 case 0:
51882d45 2483#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2484 case '\r':
2485#endif
79072805
LW		 2486 case '\n':
2487 case '\t':
2488 break;
aa689395 2489#ifdef ALTERNATE_SHEBANG
2490 case 'S': /* OS/2 needs -S on "extproc" line. */
2491 break;
2492#endif
a0d0e21e 2493 case 'P':
3280af22 2494 if (PL_preprocess)
a0d0e21e
LW		 2495 return s+1;
2496 /* FALL THROUGH */
79072805 2497 default:
cea2e8a9 2498 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2499 }
2500 return Nullch;
2501}
2502
2503/* compliments of Tom Christiansen */
2504
2505/* unexec() can be found in the Gnu emacs distribution */
ee580363 2506/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2507
2508void
864dbfa3 2509Perl_my_unexec(pTHX)
79072805
LW		 2510{
2511#ifdef UNEXEC
46fc3d4c 2512 SV* prog;
2513 SV* file;
ee580363 2514 int status = 1;
79072805
LW		 2515 extern int etext;
2516
ee580363 2517 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2518 sv_catpv(prog, "/perl");
6b88bc9c 2519 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2520 sv_catpv(file, ".perldump");
79072805 2521
ee580363
GS		 2522 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2523 /* unexec prints msg to stderr in case of failure */
6ad3d225 2524 PerlProc_exit(status);
79072805 2525#else
a5f75d66
AD		 2526# ifdef VMS
2527# include <lib$routines.h>
2528 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2529# else
79072805 2530 ABORT(); /* for use with undump */
aa689395 2531# endif
a5f75d66 2532#endif
79072805
LW		 2533}
2534
cb68f92d
GS		 2535/* initialize curinterp */
2536STATIC void
cea2e8a9 2537S_init_interp(pTHX)
cb68f92d
GS		 2538{
2539
acfe0abc
GS		 2540#ifdef MULTIPLICITY
2541# define PERLVAR(var,type)
2542# define PERLVARA(var,n,type)
2543# if defined(PERL_IMPLICIT_CONTEXT)
2544# if defined(USE_5005THREADS)
2545# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2546# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2547# else /* !USE_5005THREADS */
2548# define PERLVARI(var,type,init) aTHX->var = init;
2549# define PERLVARIC(var,type,init) aTHX->var = init;
2550# endif /* USE_5005THREADS */
3967c732 2551# else
acfe0abc
GS		 2552# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2553# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2554# endif
acfe0abc
GS		 2555# include "intrpvar.h"
2556# ifndef USE_5005THREADS
2557# include "thrdvar.h"
2558# endif
2559# undef PERLVAR
2560# undef PERLVARA
2561# undef PERLVARI
2562# undef PERLVARIC
2563#else
2564# define PERLVAR(var,type)
2565# define PERLVARA(var,n,type)
2566# define PERLVARI(var,type,init) PL_##var = init;
2567# define PERLVARIC(var,type,init) PL_##var = init;
2568# include "intrpvar.h"
2569# ifndef USE_5005THREADS
2570# include "thrdvar.h"
2571# endif
2572# undef PERLVAR
2573# undef PERLVARA
2574# undef PERLVARI
2575# undef PERLVARIC
cb68f92d
GS		 2576#endif
2577
cb68f92d
GS		 2578}
2579
76e3520e 2580STATIC void
cea2e8a9 2581S_init_main_stash(pTHX)
79072805 2582{
463ee0b2 2583 GV *gv;
6e72f9df 2584
2585 /* Note that strtab is a rather special HV. Assumptions are made
2586 about not iterating on it, and not adding tie magic to it.
2587 It is properly deallocated in perl_destruct() */
3280af22 2588 PL_strtab = newHV();
4d1ff10f 2589#ifdef USE_5005THREADS
5f08fbcd
GS		 2590 MUTEX_INIT(&PL_strtab_mutex);
2591#endif
3280af22
NIS		 2592 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2593 hv_ksplit(PL_strtab, 512);
ac27b0f5 2594
3280af22 2595 PL_curstash = PL_defstash = newHV();
79cb57f6 2596 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2597 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2598 SvREFCNT_dec(GvHV(gv));
3280af22 2599 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2600 SvREADONLY_on(gv);
3280af22
NIS		 2601 HvNAME(PL_defstash) = savepv("main");
2602 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2603 GvMULTI_on(PL_incgv);
2604 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2605 GvMULTI_on(PL_hintgv);
2606 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2607 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2608 GvMULTI_on(PL_errgv);
2609 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2610 GvMULTI_on(PL_replgv);
cea2e8a9 2611 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2612 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2613 sv_setpvn(ERRSV, "", 0);
3280af22 2614 PL_curstash = PL_defstash;
11faa288 2615 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2616 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2617 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2618 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2619 /* We must init $/ before switches are processed. */
864dbfa3 2620 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2621}
2622
76e3520e 2623STATIC void
cea2e8a9 2624S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2625{
6c4ab083 2626 *fdscript = -1;
79072805 2627
3280af22
NIS		 2628 if (PL_e_script) {
2629 PL_origfilename = savepv("-e");
96436eeb 2630 }
6c4ab083
GS		 2631 else {
2632 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2633 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2634
2635 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2636 char *s = scriptname + 8;
2637 *fdscript = atoi(s);
2638 while (isDIGIT(*s))
2639 s++;
2640 if (*s) {
2641 scriptname = savepv(s + 1);
3280af22
NIS		 2642 Safefree(PL_origfilename);
2643 PL_origfilename = scriptname;
6c4ab083
GS		 2644 }
2645 }
2646 }
2647
f4dd75d9
GS		 2648#ifdef USE_ITHREADS
2649 Safefree(CopFILE(PL_curcop));
2650#else
2651 SvREFCNT_dec(CopFILEGV(PL_curcop));
2652#endif
57843af0 2653 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2654 if (strEQ(PL_origfilename,"-"))
79072805 2655 scriptname = "";
01f988be 2656 if (*fdscript >= 0) {
3280af22 2657 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2658#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2659 if (PL_rsfp)
2660 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2661#endif
2662 }
3280af22 2663 else if (PL_preprocess) {
46fc3d4c 2664 char *cpp_cfg = CPPSTDIN;
79cb57f6 2665 SV *cpp = newSVpvn("",0);
46fc3d4c 2666 SV *cmd = NEWSV(0,0);
2667
2668 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2669 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2670 sv_catpv(cpp, cpp_cfg);
79072805 2671
0df16ed7 2672 sv_catpvn(sv, "-I", 2);
fed7345c 2673 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2674
14953ddc
MB		 2675 DEBUG_P(PerlIO_printf(Perl_debug_log,
2676 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2677 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2678#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2679 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2680sed %s -e \"/^[^#]/b\" \
2681 -e \"/^#[ ]*include[ ]/b\" \
2682 -e \"/^#[ ]*define[ ]/b\" \
2683 -e \"/^#[ ]*if[ ]/b\" \
2684 -e \"/^#[ ]*ifdef[ ]/b\" \
2685 -e \"/^#[ ]*ifndef[ ]/b\" \
2686 -e \"/^#[ ]*else/b\" \
2687 -e \"/^#[ ]*elif[ ]/b\" \
2688 -e \"/^#[ ]*undef[ ]/b\" \
2689 -e \"/^#[ ]*endif/b\" \
2690 -e \"s/^#.*//\" \
894356b3 2691 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2692 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2693#else
092bebab 2694# ifdef __OPEN_VM
cea2e8a9 2695 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2696%s %s -e '/^[^#]/b' \
2697 -e '/^#[ ]*include[ ]/b' \
2698 -e '/^#[ ]*define[ ]/b' \
2699 -e '/^#[ ]*if[ ]/b' \
2700 -e '/^#[ ]*ifdef[ ]/b' \
2701 -e '/^#[ ]*ifndef[ ]/b' \
2702 -e '/^#[ ]*else/b' \
2703 -e '/^#[ ]*elif[ ]/b' \
2704 -e '/^#[ ]*undef[ ]/b' \
2705 -e '/^#[ ]*endif/b' \
2706 -e 's/^[ ]*#.*//' \
894356b3 2707 %s | %"SVf" %"SVf" %s",
092bebab 2708# else
cea2e8a9 2709 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2710%s %s -e '/^[^#]/b' \
2711 -e '/^#[ ]*include[ ]/b' \
2712 -e '/^#[ ]*define[ ]/b' \
2713 -e '/^#[ ]*if[ ]/b' \
2714 -e '/^#[ ]*ifdef[ ]/b' \
2715 -e '/^#[ ]*ifndef[ ]/b' \
2716 -e '/^#[ ]*else/b' \
2717 -e '/^#[ ]*elif[ ]/b' \
2718 -e '/^#[ ]*undef[ ]/b' \
2719 -e '/^#[ ]*endif/b' \
2720 -e 's/^[ ]*#.*//' \
894356b3 2721 %s | %"SVf" -C %"SVf" %s",
092bebab 2722# endif
79072805
LW		 2723#ifdef LOC_SED
2724 LOC_SED,
2725#else
2726 "sed",
2727#endif
3280af22 2728 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2729#endif
46fc3d4c 2730 scriptname, cpp, sv, CPPMINUS);
3280af22 2731 PL_doextract = FALSE;
79072805 2732#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2733 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2734#ifdef HAS_SETEUID
b28d0864 2735 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2736#else
2737#ifdef HAS_SETREUID
b28d0864 2738 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2739#else
2740#ifdef HAS_SETRESUID
b28d0864 2741 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2742#else
b28d0864 2743 PerlProc_setuid(PL_uid);
79072805
LW		 2744#endif
2745#endif
85e6fe83 2746#endif
b28d0864 2747 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2748 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2749 }
2750#endif /* IAMSUID */
3280af22 2751 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2752 SvREFCNT_dec(cmd);
2753 SvREFCNT_dec(cpp);
79072805
LW		 2754 }
2755 else if (!*scriptname) {
bbce6d69 2756 forbid_setid("program input from stdin");
3280af22 2757 PL_rsfp = PerlIO_stdin();
79072805 2758 }
96436eeb 2759 else {
3280af22 2760 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2761#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2762 if (PL_rsfp)
2763 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2764#endif
2765 }
3280af22 2766 if (!PL_rsfp) {
13281fa4 2767#ifdef DOSUID
a687059c 2768#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2769 if (PL_euid &&
cc49e20b 2770 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2771 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2772 {
46fc3d4c 2773 /* try again */
a7cb1f99 2774 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2775 (int)PERL_REVISION, (int)PERL_VERSION,
2776 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2777 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2778 }
2779#endif
2780#endif
584d69ec
JH		 2781#ifdef IAMSUID
2782 errno = EPERM;
2783 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2784 Strerror(errno));
2785#else
cea2e8a9 2786 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2787 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2788#endif
13281fa4 2789 }
79072805 2790}
8d063cd8 2791
7b89560d
JH		 2792/* Mention
2793 * I_SYSSTATVFS HAS_FSTATVFS
2794 * I_SYSMOUNT
c890dc6c 2795 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2796 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2797 * here so that metaconfig picks them up. */
2798
104d25b7 2799#ifdef IAMSUID
864dbfa3 2800STATIC int
e688b231 2801S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2802{
0545a864
JH		 2803 int check_okay = 0; /* able to do all the required sys/libcalls */
2804 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2805/*
ad27e871 2806 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2807 * fstatvfs() is UNIX98.
0545a864 2808 * fstatfs() is 4.3 BSD.
ad27e871 2809 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2810 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2811 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2812 */
2813
6439433f
JH		 2814#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2815
2816# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2817 defined(HAS_FSTATVFS)
2818# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2819 struct statvfs stfs;
6439433f 2820
104d25b7
JH		 2821 check_okay = fstatvfs(fd, &stfs) == 0;
2822 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2823# endif /* fstatvfs */
ac27b0f5 2824
6439433f
JH		 2825# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2826 defined(PERL_MOUNT_NOSUID) && \
2827 defined(HAS_FSTATFS) && \
2828 defined(HAS_STRUCT_STATFS) && \
2829 defined(HAS_STRUCT_STATFS_F_FLAGS)
2830# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2831 struct statfs stfs;
6439433f 2832
104d25b7 2833 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2834 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2835# endif /* fstatfs */
2836
2837# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2838 defined(PERL_MOUNT_NOSUID) && \
2839 defined(HAS_FSTAT) && \
2840 defined(HAS_USTAT) && \
2841 defined(HAS_GETMNT) && \
2842 defined(HAS_STRUCT_FS_DATA) && \
2843 defined(NOSTAT_ONE)
2844# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2845 struct stat fdst;
6439433f 2846
0545a864 2847 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2848 struct ustat us;
2849 if (ustat(fdst.st_dev, &us) == 0) {
2850 struct fs_data fsd;
2851 /* NOSTAT_ONE here because we're not examining fields which
2852 * vary between that case and STAT_ONE. */
ad27e871 2853 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2854 size_t cmplen = sizeof(us.f_fname);
2855 if (sizeof(fsd.fd_req.path) < cmplen)
2856 cmplen = sizeof(fsd.fd_req.path);
2857 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2858 fdst.st_dev == fsd.fd_req.dev) {
2859 check_okay = 1;
2860 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2861 }
2862 }
2863 }
2864 }
0545a864 2865 }
6439433f
JH		 2866# endif /* fstat+ustat+getmnt */
2867
2868# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2869 defined(HAS_GETMNTENT) && \
2870 defined(HAS_HASMNTOPT) && \
2871 defined(MNTOPT_NOSUID)
2872# define FD_ON_NOSUID_CHECK_OKAY
2873 FILE *mtab = fopen("/etc/mtab", "r");
2874 struct mntent *entry;
2875 struct stat stb, fsb;
104d25b7
JH		 2876
2877 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2878 while (entry = getmntent(mtab)) {
2879 if (stat(entry->mnt_dir, &fsb) == 0
2880 && fsb.st_dev == stb.st_dev)
2881 {
2882 /* found the filesystem */
2883 check_okay = 1;
2884 if (hasmntopt(entry, MNTOPT_NOSUID))
2885 on_nosuid = 1;
2886 break;
2887 } /* A single fs may well fail its stat(). */
2888 }
104d25b7
JH		 2889 }
2890 if (mtab)
6439433f
JH		 2891 fclose(mtab);
2892# endif /* getmntent+hasmntopt */
0545a864 2893
ac27b0f5 2894 if (!check_okay)
0545a864 2895 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2896 return on_nosuid;
2897}
2898#endif /* IAMSUID */
2899
76e3520e 2900STATIC void
cea2e8a9 2901S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2902{
155aba94 2903#ifdef IAMSUID
96436eeb 2904 int which;
155aba94 2905#endif
96436eeb 2906
13281fa4
LW		 2907 /* do we need to emulate setuid on scripts? */
2908
2909 /* This code is for those BSD systems that have setuid #! scripts disabled
2910 * in the kernel because of a security problem. Merely defining DOSUID
2911 * in perl will not fix that problem, but if you have disabled setuid
2912 * scripts in the kernel, this will attempt to emulate setuid and setgid
2913 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2914 * root version must be called suidperl or sperlN.NNN. If regular perl
2915 * discovers that it has opened a setuid script, it calls suidperl with
2916 * the same argv that it had. If suidperl finds that the script it has
2917 * just opened is NOT setuid root, it sets the effective uid back to the
2918 * uid. We don't just make perl setuid root because that loses the
2919 * effective uid we had before invoking perl, if it was different from the
2920 * uid.
13281fa4
LW		 2921 *
2922 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2923 * be defined in suidperl only. suidperl must be setuid root. The
2924 * Configure script will set this up for you if you want it.
2925 */
a687059c 2926
13281fa4 2927#ifdef DOSUID
6e72f9df 2928 char *s, *s2;
a0d0e21e 2929
b28d0864 2930 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2931 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2932 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2933 I32 len;
2d8e6c8d 2934 STRLEN n_a;
13281fa4 2935
a687059c 2936#ifdef IAMSUID
fe14fcc3 2937#ifndef HAS_SETREUID
a687059c
LW		 2938 /* On this access check to make sure the directories are readable,
2939 * there is actually a small window that the user could use to make
2940 * filename point to an accessible directory. So there is a faint
2941 * chance that someone could execute a setuid script down in a
2942 * non-accessible directory. I don't know what to do about that.
2943 * But I don't think it's too important. The manual lies when
2944 * it says access() is useful in setuid programs.
2945 */
cc49e20b 2946 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2947 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2948#else
2949 /* If we can swap euid and uid, then we can determine access rights
2950 * with a simple stat of the file, and then compare device and
2951 * inode to make sure we did stat() on the same file we opened.
2952 * Then we just have to make sure he or she can execute it.
2953 */
2954 {
2955 struct stat tmpstatbuf;
2956
85e6fe83
LW		 2957 if (
2958#ifdef HAS_SETREUID
b28d0864 2959 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2960#else
2961# if HAS_SETRESUID
b28d0864 2962 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2963# endif
85e6fe83 2964#endif
b28d0864 2965 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2966 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2967 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2968 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2969#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2970 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2971 Perl_croak(aTHX_ "Permission denied");
104d25b7 2972#endif
b28d0864
NIS		 2973 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2974 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2975 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2976 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2977 }
85e6fe83
LW		 2978 if (
2979#ifdef HAS_SETREUID
b28d0864 2980 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2981#else
2982# if defined(HAS_SETRESUID)
b28d0864 2983 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2984# endif
85e6fe83 2985#endif
b28d0864 2986 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2987 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2988 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2989 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2990 }
fe14fcc3 2991#endif /* HAS_SETREUID */
a687059c
LW		 2992#endif /* IAMSUID */
2993
b28d0864 2994 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2995 Perl_croak(aTHX_ "Permission denied");
b28d0864 2996 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2997 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2998 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2999 CopLINE_inc(PL_curcop);
6b88bc9c 3000 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3001 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3002 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3003 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3004 if (*s == ' ') s++;
45d8adaa 3005 while (!isSPACE(*s)) s++;
2d8e6c8d 3006 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3007 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3008 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3009 Perl_croak(aTHX_ "Not a perl script");
a687059c 3010 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3011 /*
3012 * #! arg must be what we saw above. They can invoke it by
3013 * mentioning suidperl explicitly, but they may not add any strange
3014 * arguments beyond what #! says if they do invoke suidperl that way.
3015 */
3016 len = strlen(validarg);
3017 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3018 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3019 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3020
3021#ifndef IAMSUID
b28d0864
NIS		 3022 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3023 PL_euid == PL_statbuf.st_uid)
3024 if (!PL_do_undump)
cea2e8a9 3025 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3026FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3027#endif /* IAMSUID */
13281fa4 3028
b28d0864
NIS		 3029 if (PL_euid) { /* oops, we're not the setuid root perl */
3030 (void)PerlIO_close(PL_rsfp);
13281fa4 3031#ifndef IAMSUID
46fc3d4c 3032 /* try again */
a7cb1f99 3033 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3034 (int)PERL_REVISION, (int)PERL_VERSION,
3035 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3036#endif
cea2e8a9 3037 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3038 }
3039
b28d0864 3040 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3041#ifdef HAS_SETEGID
b28d0864 3042 (void)setegid(PL_statbuf.st_gid);
a687059c 3043#else
fe14fcc3 3044#ifdef HAS_SETREGID
b28d0864 3045 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3046#else
3047#ifdef HAS_SETRESGID
b28d0864 3048 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3049#else
b28d0864 3050 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3051#endif
3052#endif
85e6fe83 3053#endif
b28d0864 3054 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3055 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3056 }
b28d0864
NIS		 3057 if (PL_statbuf.st_mode & S_ISUID) {
3058 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3059#ifdef HAS_SETEUID
b28d0864 3060 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3061#else
fe14fcc3 3062#ifdef HAS_SETREUID
b28d0864 3063 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3064#else
3065#ifdef HAS_SETRESUID
b28d0864 3066 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3067#else
b28d0864 3068 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3069#endif
3070#endif
85e6fe83 3071#endif
b28d0864 3072 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3073 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3074 }
b28d0864 3075 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3076#ifdef HAS_SETEUID
b28d0864 3077 (void)seteuid((Uid_t)PL_uid);
a687059c 3078#else
fe14fcc3 3079#ifdef HAS_SETREUID
b28d0864 3080 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3081#else
85e6fe83 3082#ifdef HAS_SETRESUID
b28d0864 3083 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3084#else
b28d0864 3085 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3086#endif
a687059c
LW		 3087#endif
3088#endif
b28d0864 3089 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3090 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3091 }
748a9306 3092 init_ids();
b28d0864 3093 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3094 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3095 }
3096#ifdef IAMSUID
6b88bc9c 3097 else if (PL_preprocess)
cea2e8a9 3098 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3099 else if (fdscript >= 0)
cea2e8a9 3100 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3101 else
cea2e8a9 3102 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3103
3104 /* We absolutely must clear out any saved ids here, so we */
3105 /* exec the real perl, substituting fd script for scriptname. */
3106 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3107 PerlIO_rewind(PL_rsfp);
3108 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3109 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3110 if (!PL_origargv[which])
cea2e8a9
GS		 3111 Perl_croak(aTHX_ "Permission denied");
3112 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3113 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3114#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3115 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3116#endif
a7cb1f99 3117 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3118 (int)PERL_REVISION, (int)PERL_VERSION,
3119 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3120 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3121#endif /* IAMSUID */
a687059c 3122#else /* !DOSUID */
3280af22 3123 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3124#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3125 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3126 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3127 ||
b28d0864 3128 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3129 )
b28d0864 3130 if (!PL_do_undump)
cea2e8a9 3131 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3132FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3133#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3134 /* not set-id, must be wrapped */
a687059c 3135 }
13281fa4 3136#endif /* DOSUID */
79072805 3137}
13281fa4 3138
76e3520e 3139STATIC void
cea2e8a9 3140S_find_beginning(pTHX)
79072805 3141{
6e72f9df 3142 register char *s, *s2;
33b78306
LW		 3143
3144 /* skip forward in input to the real script? */
3145
bbce6d69 3146 forbid_setid("-x");
bf4acbe4 3147#ifdef MACOS_TRADITIONAL
084592ab 3148 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3149
bf4acbe4
GS		 3150 while (PL_doextract || gMacPerl_AlwaysExtract) {
3151 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3152 if (!gMacPerl_AlwaysExtract)
3153 Perl_croak(aTHX_ "No Perl script found in input\n");
3154
3155 if (PL_doextract) /* require explicit override ? */
3156 if (!OverrideExtract(PL_origfilename))
3157 Perl_croak(aTHX_ "User aborted script\n");
3158 else
3159 PL_doextract = FALSE;
3160
3161 /* Pater peccavi, file does not have #! */
3162 PerlIO_rewind(PL_rsfp);
ac27b0f5 3163
bf4acbe4
GS		 3164 break;
3165 }
3166#else
3280af22
NIS		 3167 while (PL_doextract) {
3168 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3169 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3170#endif
4f0c37ba
IZ		 3171 s2 = s;
3172 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3173 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3174 PL_doextract = FALSE;
6e72f9df 3175 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3176 s2 = s;
3177 while (*s == ' ' || *s == '\t') s++;
3178 if (*s++ == '-') {
3179 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3180 if (strnEQ(s2-4,"perl",4))
3181 /*SUPPRESS 530*/
155aba94
GS		 3182 while ((s = moreswitches(s)))
3183 ;
33b78306 3184 }
95e8664e
CN		 3185#ifdef MACOS_TRADITIONAL
3186 break;
3187#endif
83025b21
LW		 3188 }
3189 }
3190}
3191
afe37c7d 3192
76e3520e 3193STATIC void
cea2e8a9 3194S_init_ids(pTHX)
352d5a3a 3195{
d8eceb89
JH		 3196 PL_uid = PerlProc_getuid();
3197 PL_euid = PerlProc_geteuid();
3198 PL_gid = PerlProc_getgid();
3199 PL_egid = PerlProc_getegid();
748a9306 3200#ifdef VMS
b28d0864
NIS		 3201 PL_uid |= PL_gid << 16;
3202 PL_euid |= PL_egid << 16;
748a9306 3203#endif
3280af22 3204 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3205}
79072805 3206
76e3520e 3207STATIC void
cea2e8a9 3208S_forbid_setid(pTHX_ char *s)
bbce6d69 3209{
3280af22 3210 if (PL_euid != PL_uid)
cea2e8a9 3211 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3212 if (PL_egid != PL_gid)
cea2e8a9 3213 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3214}
3215
1ee4443e
IZ		 3216void
3217Perl_init_debugger(pTHX)
748a9306 3218{
1ee4443e
IZ		 3219 HV *ostash = PL_curstash;
3220
3280af22
NIS		 3221 PL_curstash = PL_debstash;
3222 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3223 AvREAL_off(PL_dbargs);
3224 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3225 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3226 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3227 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3228 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3229 sv_setiv(PL_DBsingle, 0);
3280af22 3230 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3231 sv_setiv(PL_DBtrace, 0);
3280af22 3232 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3233 sv_setiv(PL_DBsignal, 0);
1ee4443e 3234 PL_curstash = ostash;
352d5a3a
LW		 3235}
3236
2ce36478
SM		 3237#ifndef STRESS_REALLOC
3238#define REASONABLE(size) (size)
3239#else
3240#define REASONABLE(size) (1) /* unreasonable */
3241#endif
3242
11343788 3243void
cea2e8a9 3244Perl_init_stacks(pTHX)
79072805 3245{
e336de0d 3246 /* start with 128-item stack and 8K cxstack */
3280af22 3247 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3248 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3249 PL_curstackinfo->si_type = PERLSI_MAIN;
3250 PL_curstack = PL_curstackinfo->si_stack;
3251 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3252
3280af22
NIS		 3253 PL_stack_base = AvARRAY(PL_curstack);
3254 PL_stack_sp = PL_stack_base;
3255 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3256
3280af22
NIS		 3257 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3258 PL_tmps_floor = -1;
3259 PL_tmps_ix = -1;
3260 PL_tmps_max = REASONABLE(128);
8990e307 3261
3280af22
NIS		 3262 New(54,PL_markstack,REASONABLE(32),I32);
3263 PL_markstack_ptr = PL_markstack;
3264 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3265
ce2f7c3b 3266 SET_MARK_OFFSET;
e336de0d 3267
3280af22
NIS		 3268 New(54,PL_scopestack,REASONABLE(32),I32);
3269 PL_scopestack_ix = 0;
3270 PL_scopestack_max = REASONABLE(32);
79072805 3271
3280af22
NIS		 3272 New(54,PL_savestack,REASONABLE(128),ANY);
3273 PL_savestack_ix = 0;
3274 PL_savestack_max = REASONABLE(128);
79072805 3275
3280af22
NIS		 3276 New(54,PL_retstack,REASONABLE(16),OP*);
3277 PL_retstack_ix = 0;
3278 PL_retstack_max = REASONABLE(16);
378cc40b 3279}
33b78306 3280
2ce36478
SM		 3281#undef REASONABLE
3282
76e3520e 3283STATIC void
cea2e8a9 3284S_nuke_stacks(pTHX)
6e72f9df 3285{
3280af22
NIS		 3286 while (PL_curstackinfo->si_next)
3287 PL_curstackinfo = PL_curstackinfo->si_next;
3288 while (PL_curstackinfo) {
3289 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3290 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3291 Safefree(PL_curstackinfo->si_cxstack);
3292 Safefree(PL_curstackinfo);
3293 PL_curstackinfo = p;
e336de0d 3294 }
3280af22
NIS		 3295 Safefree(PL_tmps_stack);
3296 Safefree(PL_markstack);
3297 Safefree(PL_scopestack);
3298 Safefree(PL_savestack);
3299 Safefree(PL_retstack);
378cc40b 3300}
33b78306 3301
76e3520e 3302STATIC void
cea2e8a9 3303S_init_lexer(pTHX)
8990e307 3304{
06039172 3305 PerlIO *tmpfp;
3280af22
NIS		 3306 tmpfp = PL_rsfp;
3307 PL_rsfp = Nullfp;
3308 lex_start(PL_linestr);
3309 PL_rsfp = tmpfp;
79cb57f6 3310 PL_subname = newSVpvn("main",4);
8990e307
LW		 3311}
3312
76e3520e 3313STATIC void
cea2e8a9 3314S_init_predump_symbols(pTHX)
45d8adaa 3315{
93a17b20 3316 GV *tmpgv;
af8c498a 3317 IO *io;
79072805 3318
864dbfa3 3319 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3320 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3321 GvMULTI_on(PL_stdingv);
af8c498a 3322 io = GvIOp(PL_stdingv);
a04651f4 3323 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3324 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3325 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3326 GvMULTI_on(tmpgv);
af8c498a 3327 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3328
85e6fe83 3329 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3330 GvMULTI_on(tmpgv);
af8c498a 3331 io = GvIOp(tmpgv);
a04651f4 3332 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3333 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3334 setdefout(tmpgv);
adbc6bb1 3335 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3336 GvMULTI_on(tmpgv);
af8c498a 3337 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3338
bf49b057
GS		 3339 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3340 GvMULTI_on(PL_stderrgv);
3341 io = GvIOp(PL_stderrgv);
a04651f4 3342 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3343 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3344 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3345 GvMULTI_on(tmpgv);
af8c498a 3346 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3347
3280af22 3348 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3349
bf4acbe4
GS		 3350 if (PL_osname)
3351 Safefree(PL_osname);
3352 PL_osname = savepv(OSNAME);
79072805 3353}
33b78306 3354
76e3520e 3355STATIC void
cea2e8a9 3356S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3357{
79072805
LW		 3358 char *s;
3359 SV *sv;
3360 GV* tmpgv;
9cbac4c7 3361#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3362 char **dup_env_base = 0;
103a7189 3363 int dup_env_count = 0;
9cbac4c7 3364#endif
fe14fcc3 3365
79072805 3366 argc--,argv++; /* skip name of script */
3280af22 3367 if (PL_doswitches) {
79072805
LW		 3368 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3369 if (!argv[0][1])
3370 break;
379d538a 3371 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3372 argc--,argv++;
3373 break;
3374 }
155aba94 3375 if ((s = strchr(argv[0], '='))) {
79072805 3376 *s++ = '\0';
85e6fe83 3377 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3378 }
3379 else
85e6fe83 3380 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3381 }
79072805 3382 }
3280af22
NIS		 3383 PL_toptarget = NEWSV(0,0);
3384 sv_upgrade(PL_toptarget, SVt_PVFM);
3385 sv_setpvn(PL_toptarget, "", 0);
3386 PL_bodytarget = NEWSV(0,0);
3387 sv_upgrade(PL_bodytarget, SVt_PVFM);
3388 sv_setpvn(PL_bodytarget, "", 0);
3389 PL_formtarget = PL_bodytarget;
79072805 3390
bbce6d69 3391 TAINT;
155aba94 3392 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3393#ifdef MACOS_TRADITIONAL
3394 /* $0 is not majick on a Mac */
3395 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3396#else
3280af22 3397 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3398 magicname("0", "0", 1);
bf4acbe4 3399#endif
79072805 3400 }
155aba94 3401 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3402#ifdef OS2
23da6c43 3403 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3404#else
3280af22 3405 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3406#endif
155aba94 3407 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3408 GvMULTI_on(PL_argvgv);
3409 (void)gv_AVadd(PL_argvgv);
3410 av_clear(GvAVn(PL_argvgv));
79072805 3411 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3412 SV *sv = newSVpv(argv[0],0);
3413 av_push(GvAVn(PL_argvgv),sv);
3414 if (PL_widesyscalls)
e84ff256 3415 (void)sv_utf8_decode(sv);
79072805
LW		 3416 }
3417 }
155aba94 3418 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3419 HV *hv;
3280af22
NIS		 3420 GvMULTI_on(PL_envgv);
3421 hv = GvHVn(PL_envgv);
14befaf4 3422 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3423#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3424 /* Note that if the supplied env parameter is actually a copy
3425 of the global environ then it may now point to free'd memory
3426 if the environment has been modified since. To avoid this
3427 problem we treat env==NULL as meaning 'use the default'
3428 */
3429 if (!env)
3430 env = environ;
5aabfad6 3431 if (env != environ)
79072805 3432 environ[0] = Nullch;
103a7189
JH		 3433#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3434 {
3435 char **env_base;
9041c2e3 3436 for (env_base = env; *env; env++)
103a7189
JH		 3437 dup_env_count++;
3438 if ((dup_env_base = (char **)
480bfd1e 3439 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3440 char **dup_env;
3441 for (env = env_base, dup_env = dup_env_base;
3442 *env;
480bfd1e
JH		 3443 env++, dup_env++) {
3444 /* With environ one needs to use safesysmalloc(). */
3445 *dup_env = safesysmalloc(strlen(*env) + 1);
3446 (void)strcpy(*dup_env, *env);
3447 }
103a7189
JH		 3448 *dup_env = Nullch;
3449 env = dup_env_base;
3450 } /* else what? */
3451 }
3452#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3453 if (env)
3454 for (; *env; env++) {
93a17b20 3455 if (!(s = strchr(*env,'=')))
79072805
LW		 3456 continue;
3457 *s++ = '\0';
60ce6247 3458#if defined(MSDOS)
137443ea 3459 (void)strupr(*env);
3460#endif
79072805
LW		 3461 sv = newSVpv(s--,0);
3462 (void)hv_store(hv, *env, s - *env, sv, 0);
3463 *s = '=';
764df951 3464 }
480bfd1e 3465#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3466 if (dup_env_base) {
3467 char **dup_env;
3468 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3469 safesysfree(*dup_env);
3470 safesysfree(dup_env_base);
103a7189 3471 }
7e0f6a1f 3472#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3473#endif /* USE_ENVIRON_ARRAY */
79072805 3474 }
bbce6d69 3475 TAINT_NOT;
155aba94 3476 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3477 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3478}
34de22dd 3479
76e3520e 3480STATIC void
cea2e8a9 3481S_init_perllib(pTHX)
34de22dd 3482{
85e6fe83 3483 char *s;
3280af22 3484 if (!PL_tainting) {
552a7a9b 3485#ifndef VMS
76e3520e 3486 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3487 if (s)
9c8a64f0 3488 incpush(s, TRUE, TRUE);
85e6fe83 3489 else
9c8a64f0 3490 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3491#else /* VMS */
3492 /* Treat PERL5?LIB as a possible search list logical name -- the
3493 * "natural" VMS idiom for a Unix path string. We allow each
3494 * element to be a set of |-separated directories for compatibility.
3495 */
3496 char buf[256];
3497 int idx = 0;
3498 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3499 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3500 else
9c8a64f0 3501 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3502#endif /* VMS */
85e6fe83 3503 }
34de22dd 3504
c90c0ff4 3505/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3506 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3507*/
4633a7c4 3508#ifdef APPLLIB_EXP
9c8a64f0 3509 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3510#endif
4633a7c4 3511
fed7345c 3512#ifdef ARCHLIB_EXP
9c8a64f0 3513 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3514#endif
bf4acbe4
GS		 3515#ifdef MACOS_TRADITIONAL
3516 {
3517 struct stat tmpstatbuf;
3518 SV * privdir = NEWSV(55, 0);
3519 char * macperl = PerlEnv_getenv("MACPERL");
3520
3521 if (!macperl)
3522 macperl = "";
3523
3524 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3525 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3526 incpush(SvPVX(privdir), TRUE, FALSE);
3527 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3528 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3529 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3530
bf4acbe4
GS		 3531 SvREFCNT_dec(privdir);
3532 }
3533 if (!PL_tainting)
3534 incpush(":", FALSE, FALSE);
3535#else
fed7345c 3536#ifndef PRIVLIB_EXP
65f19062 3537# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3538#endif
ac27b0f5 3539#if defined(WIN32)
9c8a64f0 3540 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3541#else
9c8a64f0 3542 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3543#endif
4633a7c4 3544
65f19062 3545#ifdef SITEARCH_EXP
3b290362
GS		 3546 /* sitearch is always relative to sitelib on Windows for
3547 * DLL-based path intuition to work correctly */
3548# if !defined(WIN32)
9c8a64f0 3549 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3550# endif
3551#endif
3552
4633a7c4 3553#ifdef SITELIB_EXP
65f19062 3554# if defined(WIN32)
9c8a64f0 3555 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3556# else
9c8a64f0 3557 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3558# endif
3559#endif
189d1e8d 3560
65f19062 3561#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3562 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3563#endif
65f19062
GS		 3564
3565#ifdef PERL_VENDORARCH_EXP
4ea817c6 3566 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3567 * DLL-based path intuition to work correctly */
3568# if !defined(WIN32)
9c8a64f0 3569 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3570# endif
4b03c463 3571#endif
65f19062
GS		 3572
3573#ifdef PERL_VENDORLIB_EXP
3574# if defined(WIN32)
9c8a64f0 3575 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3576# else
9c8a64f0 3577 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3578# endif
a3635516 3579#endif
65f19062
GS		 3580
3581#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3582 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3583#endif
65f19062 3584
3b777bb4
GS		 3585#ifdef PERL_OTHERLIBDIRS
3586 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3587#endif
3588
3280af22 3589 if (!PL_tainting)
9c8a64f0 3590 incpush(".", FALSE, FALSE);
bf4acbe4 3591#endif /* MACOS_TRADITIONAL */
774d564b 3592}
3593
ed79a026 3594#if defined(DOSISH) || defined(EPOC)
774d564b 3595# define PERLLIB_SEP ';'
3596#else
3597# if defined(VMS)
3598# define PERLLIB_SEP '|'
3599# else
bf4acbe4
GS		 3600# if defined(MACOS_TRADITIONAL)
3601# define PERLLIB_SEP ','
3602# else
3603# define PERLLIB_SEP ':'
3604# endif
774d564b 3605# endif
3606#endif
3607#ifndef PERLLIB_MANGLE
3608# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3609#endif
774d564b 3610
76e3520e 3611STATIC void
9c8a64f0 3612S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3613{
3614 SV *subdir = Nullsv;
774d564b 3615
3b290362 3616 if (!p || !*p)
774d564b 3617 return;
3618
9c8a64f0 3619 if (addsubdirs || addoldvers) {
00db4c45 3620 subdir = sv_newmortal();
774d564b 3621 }
3622
3623 /* Break at all separators */
3624 while (p && *p) {
8c52afec 3625 SV *libdir = NEWSV(55,0);
774d564b 3626 char *s;
3627
3628 /* skip any consecutive separators */
3629 while ( *p == PERLLIB_SEP ) {
3630 /* Uncomment the next line for PATH semantics */
79cb57f6 3631 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3632 p++;
3633 }
3634
3635 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3636 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3637 (STRLEN)(s - p));
3638 p = s + 1;
3639 }
3640 else {
3641 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3642 p = Nullch; /* break out */
3643 }
bf4acbe4
GS		 3644#ifdef MACOS_TRADITIONAL
3645 if (!strchr(SvPVX(libdir), ':'))
3646 sv_insert(libdir, 0, 0, ":", 1);
3647 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3648 sv_catpv(libdir, ":");
3649#endif
774d564b 3650
3651 /*
3652 * BEFORE pushing libdir onto @INC we may first push version- and
3653 * archname-specific sub-directories.
3654 */
9c8a64f0 3655 if (addsubdirs || addoldvers) {
29d82f8d 3656#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3657 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3658 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3659 const char **incver;
3660#endif
774d564b 3661 struct stat tmpstatbuf;
aa689395 3662#ifdef VMS
3663 char *unix;
3664 STRLEN len;
774d564b 3665
2d8e6c8d 3666 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3667 len = strlen(unix);
3668 while (unix[len-1] == '/') len--; /* Cosmetic */
3669 sv_usepvn(libdir,unix,len);
3670 }
3671 else
bf49b057 3672 PerlIO_printf(Perl_error_log,
aa689395 3673 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3674 SvPV(libdir,len));
aa689395 3675#endif
9c8a64f0 3676 if (addsubdirs) {
bf4acbe4
GS		 3677#ifdef MACOS_TRADITIONAL
3678#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3679#define PERL_ARCH_FMT "%s:"
3680#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3681#else
3682#define PERL_AV_SUFFIX_FMT "/"
3683#define PERL_ARCH_FMT "/%s"
084592ab 3684#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3685#endif
9c8a64f0 3686 /* .../version/archname if -d .../version/archname */
084592ab 3687 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3688 libdir,
3689 (int)PERL_REVISION, (int)PERL_VERSION,
3690 (int)PERL_SUBVERSION, ARCHNAME);
3691 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3692 S_ISDIR(tmpstatbuf.st_mode))
3693 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3694
9c8a64f0 3695 /* .../version if -d .../version */
084592ab 3696 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3697 (int)PERL_REVISION, (int)PERL_VERSION,
3698 (int)PERL_SUBVERSION);
3699 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3700 S_ISDIR(tmpstatbuf.st_mode))
3701 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3702
3703 /* .../archname if -d .../archname */
bf4acbe4 3704 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3705 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3706 S_ISDIR(tmpstatbuf.st_mode))
3707 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3708 }
9c8a64f0 3709
9c8a64f0 3710#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3711 if (addoldvers) {
9c8a64f0
GS		 3712 for (incver = incverlist; *incver; incver++) {
3713 /* .../xxx if -d .../xxx */
bf4acbe4 3714 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3715 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3716 S_ISDIR(tmpstatbuf.st_mode))
3717 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3718 }
3719 }
29d82f8d 3720#endif
774d564b 3721 }
3722
3723 /* finally push this lib directory on the end of @INC */
3280af22 3724 av_push(GvAVn(PL_incgv), libdir);
774d564b 3725 }
34de22dd 3726}
93a17b20 3727
4d1ff10f 3728#ifdef USE_5005THREADS
76e3520e 3729STATIC struct perl_thread *
cea2e8a9 3730S_init_main_thread(pTHX)
199100c8 3731{
c5be433b 3732#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3733 struct perl_thread *thr;
cea2e8a9 3734#endif
199100c8
MB		 3735 XPV *xpv;
3736
52e1cb5e 3737 Newz(53, thr, 1, struct perl_thread);
533c011a 3738 PL_curcop = &PL_compiling;
c5be433b 3739 thr->interp = PERL_GET_INTERP;
199100c8 3740 thr->cvcache = newHV();
54b9620d 3741 thr->threadsv = newAV();
940cb80d 3742 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3743 thr->specific = newAV();
3744 thr->flags = THRf_R_JOINABLE;
3745 MUTEX_INIT(&thr->mutex);
3746 /* Handcraft thrsv similarly to mess_sv */
533c011a 3747 New(53, PL_thrsv, 1, SV);
199100c8 3748 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3749 SvFLAGS(PL_thrsv) = SVt_PV;
3750 SvANY(PL_thrsv) = (void*)xpv;
3751 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3752 SvPVX(PL_thrsv) = (char*)thr;
3753 SvCUR_set(PL_thrsv, sizeof(thr));
3754 SvLEN_set(PL_thrsv, sizeof(thr));
3755 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3756 thr->oursv = PL_thrsv;
3757 PL_chopset = " \n-";
3967c732 3758 PL_dumpindent = 4;
533c011a
NIS		 3759
3760 MUTEX_LOCK(&PL_threads_mutex);
3761 PL_nthreads++;
199100c8
MB		 3762 thr->tid = 0;
3763 thr->next = thr;
3764 thr->prev = thr;
8dcd6f7b 3765 thr->thr_done = 0;
533c011a 3766 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3767
4b026b9e 3768#ifdef HAVE_THREAD_INTERN
4f63d024 3769 Perl_init_thread_intern(thr);
235db74f
GS		 3770#endif
3771
3772#ifdef SET_THREAD_SELF
3773 SET_THREAD_SELF(thr);
199100c8
MB		 3774#else
3775 thr->self = pthread_self();
235db74f 3776#endif /* SET_THREAD_SELF */
06d86050 3777 PERL_SET_THX(thr);
199100c8
MB		 3778
3779 /*
411caa50
JH		 3780 * These must come after the thread self setting
3781 * because sv_setpvn does SvTAINT and the taint
3782 * fields thread selfness being set.
199100c8 3783 */
533c011a
NIS		 3784 PL_toptarget = NEWSV(0,0);
3785 sv_upgrade(PL_toptarget, SVt_PVFM);
3786 sv_setpvn(PL_toptarget, "", 0);
3787 PL_bodytarget = NEWSV(0,0);
3788 sv_upgrade(PL_bodytarget, SVt_PVFM);
3789 sv_setpvn(PL_bodytarget, "", 0);
3790 PL_formtarget = PL_bodytarget;
79cb57f6 3791 thr->errsv = newSVpvn("", 0);
78857c3c 3792 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3793
533c011a 3794 PL_maxscream = -1;
a2efc822 3795 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3796 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3797 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3798 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3799 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3800 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3801 PL_regindent = 0;
3802 PL_reginterp_cnt = 0;
5c0ca799 3803
199100c8
MB		 3804 return thr;
3805}
4d1ff10f 3806#endif /* USE_5005THREADS */
199100c8 3807
93a17b20 3808void
864dbfa3 3809Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3810{
971a9dd3 3811 SV *atsv;
57843af0 3812 line_t oldline = CopLINE(PL_curcop);
312caa8e 3813 CV *cv;
22921e25 3814 STRLEN len;
6224f72b 3815 int ret;
db36c5a1 3816 dJMPENV;
93a17b20 3817
76e3520e 3818 while (AvFILL(paramList) >= 0) {
312caa8e 3819 cv = (CV*)av_shift(paramList);
aefff11f 3820 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3821 /* save PL_beginav for compiler */
3822 if (! PL_beginav_save)
3823 PL_beginav_save = newAV();
3824 av_push(PL_beginav_save, (SV*)cv);
3825 } else {
3826 SAVEFREESV(cv);
3827 }
14dd3ad8
GS		 3828#ifdef PERL_FLEXIBLE_EXCEPTIONS
3829 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3830#else
3831 JMPENV_PUSH(ret);
3832#endif
6224f72b 3833 switch (ret) {
312caa8e 3834 case 0:
14dd3ad8
GS		 3835#ifndef PERL_FLEXIBLE_EXCEPTIONS
3836 call_list_body(cv);
3837#endif
971a9dd3 3838 atsv = ERRSV;
312caa8e
CS		 3839 (void)SvPV(atsv, len);
3840 if (len) {
971a9dd3 3841 STRLEN n_a;
312caa8e 3842 PL_curcop = &PL_compiling;
57843af0 3843 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3844 if (paramList == PL_beginav)
3845 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3846 else
4f25aa18
GS		 3847 Perl_sv_catpvf(aTHX_ atsv,
3848 "%s failed--call queue aborted",
7d30b5c4 3849 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3850 : paramList == PL_initav ? "INIT"
3851 : "END");
312caa8e
CS		 3852 while (PL_scopestack_ix > oldscope)
3853 LEAVE;
14dd3ad8 3854 JMPENV_POP;
971a9dd3 3855 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3856 }
85e6fe83 3857 break;
6224f72b 3858 case 1:
f86702cc 3859 STATUS_ALL_FAILURE;
85e6fe83 3860 /* FALL THROUGH */
6224f72b 3861 case 2:
85e6fe83 3862 /* my_exit() was called */
3280af22 3863 while (PL_scopestack_ix > oldscope)
2ae324a7 3864 LEAVE;
84902520 3865 FREETMPS;
3280af22 3866 PL_curstash = PL_defstash;
3280af22 3867 PL_curcop = &PL_compiling;
57843af0 3868 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3869 JMPENV_POP;
cc3604b1 3870 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3871 if (paramList == PL_beginav)
cea2e8a9 3872 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3873 else
4f25aa18 3874 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3875 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3876 : paramList == PL_initav ? "INIT"
3877 : "END");
85e6fe83 3878 }
f86702cc 3879 my_exit_jump();
85e6fe83 3880 /* NOTREACHED */
6224f72b 3881 case 3:
312caa8e
CS		 3882 if (PL_restartop) {
3883 PL_curcop = &PL_compiling;
57843af0 3884 CopLINE_set(PL_curcop, oldline);
312caa8e 3885 JMPENV_JUMP(3);
85e6fe83 3886 }
bf49b057 3887 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3888 FREETMPS;
3889 break;
8990e307 3890 }
14dd3ad8 3891 JMPENV_POP;
93a17b20 3892 }
93a17b20 3893}
93a17b20 3894
14dd3ad8 3895#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3896STATIC void *
14dd3ad8 3897S_vcall_list_body(pTHX_ va_list args)
312caa8e 3898{
312caa8e 3899 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3900 return call_list_body(cv);
3901}
3902#endif
312caa8e 3903
14dd3ad8
GS		 3904STATIC void *
3905S_call_list_body(pTHX_ CV *cv)
3906{
312caa8e 3907 PUSHMARK(PL_stack_sp);
864dbfa3 3908 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3909 return NULL;
3910}
3911
f86702cc 3912void
864dbfa3 3913Perl_my_exit(pTHX_ U32 status)
f86702cc 3914{
8b73bbec 3915 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3916 thr, (unsigned long) status));
f86702cc 3917 switch (status) {
3918 case 0:
3919 STATUS_ALL_SUCCESS;
3920 break;
3921 case 1:
3922 STATUS_ALL_FAILURE;
3923 break;
3924 default:
3925 STATUS_NATIVE_SET(status);
3926 break;
3927 }
3928 my_exit_jump();
3929}
3930
3931void
864dbfa3 3932Perl_my_failure_exit(pTHX)
f86702cc 3933{
3934#ifdef VMS
3935 if (vaxc$errno & 1) {
4fdae800 3936 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3937 STATUS_NATIVE_SET(44);
f86702cc 3938 }
3939 else {
ff0cee69 3940 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3941 STATUS_NATIVE_SET(44);
f86702cc 3942 else
4fdae800 3943 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3944 }
3945#else
9b599b2a 3946 int exitstatus;
f86702cc 3947 if (errno & 255)
3948 STATUS_POSIX_SET(errno);
9b599b2a 3949 else {
ac27b0f5 3950 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3951 if (exitstatus & 255)
3952 STATUS_POSIX_SET(exitstatus);
3953 else
3954 STATUS_POSIX_SET(255);
3955 }
f86702cc 3956#endif
3957 my_exit_jump();
93a17b20
LW		 3958}
3959
76e3520e 3960STATIC void
cea2e8a9 3961S_my_exit_jump(pTHX)
f86702cc 3962{
c09156bb 3963 register PERL_CONTEXT *cx;
f86702cc 3964 I32 gimme;
3965 SV **newsp;
3966
3280af22
NIS		 3967 if (PL_e_script) {
3968 SvREFCNT_dec(PL_e_script);
3969 PL_e_script = Nullsv;
f86702cc 3970 }
3971
3280af22 3972 POPSTACK_TO(PL_mainstack);
f86702cc 3973 if (cxstack_ix >= 0) {
3974 if (cxstack_ix > 0)
3975 dounwind(0);
3280af22 3976 POPBLOCK(cx,PL_curpm);
f86702cc 3977 LEAVE;
3978 }
ff0cee69 3979
6224f72b 3980 JMPENV_JUMP(2);
f86702cc 3981}
873ef191 3982
0cb96387 3983static I32
acfe0abc 3984read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3985{
3986 char *p, *nl;
3280af22 3987 p = SvPVX(PL_e_script);
873ef191 3988 nl = strchr(p, '\n');
3280af22 3989 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3990 if (nl-p == 0) {
0cb96387 3991 filter_del(read_e_script);
873ef191 3992 return 0;
7dfe3f66 3993 }
873ef191 3994 sv_catpvn(buf_sv, p, nl-p);
3280af22 3995 sv_chop(PL_e_script, nl);
873ef191
GS		 3996 return 1;
3997}
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